Continuous Spray Research Articles

Experimental study of intermittent spray cooling on suppression for lithium iron phosphate battery fires

Nowadays, fires caused by thermal runaway (TR) of lithium ion battery (LIB) remains a potential risk in its application. An effective method is urgently required to suppress LIB fires. In this work, a novel cooling method combining dodecafluoro-2-methylpentan-3-one (C 6 F 12 O) agent with intermittent spray cooling (ISC) is proposed for suppression of lithium iron phosphate (LFP) battery fires. Besides, the influence of spray frequency and duty cycle (DC) on spray cooling efficiency are discussed. The results indicate that atomized C 6 F 12 O can effectively suppress LFP fires, reduce the production of toxic gases and heat release rate (HRR). However, after C 6 F 12 O runs out, the rapidly elevated temperature and the release of combustible gases mean that the TR battery requires longer and more efficient cooling. Compared with continuous spray cooling (CSC), ISC not only extends low temperature duration but also decreases the temperature rise rate of the battery. As DC increasing, C 6 F 12 O agent first exhibits an enhancement effect and then an inhibition effect on cooling performance. It is suggested that the optimum DC is 55.4% for the suppression of 14 Ah LFP fires. For the LIBs with higher capacity and higher fraction of active materials, the optimum DC is required to be higher. • A novel cooling strategy is firstly developed for lithium ion battery fires. • Key cooling parameters of thermal runaway suppression with C6F12O are analyzed. • Continuous and intermittent spray modes are compared and investigated. • Duty cycle dominates the cooling performance of intermittent spray cooling.

Anchoring Sub‐Nanometer Pt Clusters on Crumpled Paper‐Like MXene Enables High Hydrogen Evolution Mass Activity

AbstractPlatinum (Pt)‐based electrocatalysts are the benchmark catalysts for hydrogen evolution reaction (HER); however, they are limited by the scarcity and high price. Introducing an adequate substrate to disperse and anchor Pt‐based species is a feasible pathway to improve the utilization efficiency. Herein, a quick and continuous spray drying route is proposed to fabricate 3D crumpled Ti3C2Tx MXene loaded with sub‐nanometer platinum clusters (Pt/MXene). The 3D crumpled structure inhibits the restacking of layered MXene nanosheets and guarantees the fully exposure of Pt clusters. The as‐prepared catalyst exhibits excellent HER performances comparable to commercial Pt/C, including a low overpotential of 34 mV to reach a current density of 10 mA cm−2, a superior mass activity (1847 mA mgPt−1), a small Tafel slope (29.7 mV dec−1), and a high turnover frequency (10.66 H2 s−1). The improved activity of Pt/MXene can be attributed to the charge transfer from Pt clusters to MXene, which weakens the hydrogen adsorption, as evidenced by the density functional theory calculations. The present contribution proposes a novel strategy to anchor low‐mass‐loading sub‐nanometer precious metal clusters on crumpled MXene with fully exposed active sites for catalysis.

The effect of the NiTi alloy modification and the taper of endodontic instruments on the cyclic fatigue resistance

Background/Aim: The fracture of engine-driven instruments during root canal treatment has been tried to be eliminated by developing the manufacturing process of the files. The aim of this study was to assess cyclic fatigue resistance (CFR) of the two different rotary filesEdgeSequel™ Sapphire (ES) and Race® Evo (RE)which are produced by two different manufacturing technologies. Material and Methods: While RE is manufactured from heat-treated NiTi alloy with the electropolished surface, ES undergoes a non-disclosed thermal treatment called FireWire heat treatment. The CFRs of ES and RE comprising of similar tip size and taper (15/.04 and 25/.04) were compared on a cyclic fatigue device with an artificial stainless-steel canal (60° curvature, 5 mm radius, 1.5 mm width, and 3.0 mm depth). The continuous water spray with a syringe at 35.5°C was used to decrease the friction and to simulate in vivo conditions. All procedures were performed at recommended speed and torque for both files until fracture occurred. The time to failure (TF) was recorded and the number of cycles to failure (NCF) was calculated. The Weibull calculations (Weibull modulus, R2, predicted cycles, and time for 99 % survival) for NCF and TF were also done. The data were statistically analyzed with the independent two-sample t-test and the paired two-sample t-test. The significance level was set at p < 0.05. Results: Both ES and RE showed a better CFR in 15/.04 tip size than 25/.04 (P < 0.05). The TF of the ES were higher than the RE (P < 0.05). The highest and lowest Weibull modulus values were obtained with RE 15/.04 and RE 25/.04, respectively. Conclusions: Both the tip diameter and alloy modification of the instruments affected the CFR. FireWire heat treatment was associated with longer TF. The bigger the tip diameter, the lower the CFR for both tested products.

Development of a thermal spray coating aerosol generator and inhalation exposure system

Thermal spray coating involves spraying a product (oftentimes metal) that is melted by extremely high temperatures and then applied under pressure onto a surface. Large amounts of a complex metal aerosol (e.g., Fe, Cr, Ni, Zn) are formed during the process, presenting a potentially serious risk to the operator. Information about the health effects associated with exposure to these aerosols is lacking. Even less is known about the chemical and physical properties of these aerosols. The goal was to develop and test an automated thermal spray coating aerosol generator and inhalation exposure system that would simulate workplace exposures. An electric arc wire-thermal spray coating aerosol generator and exposure system was designed and separated into two areas: (1) an enclosed room where the spray coating occurs; (2) an exposure chamber with different measurement devices and controllers. The physicochemical properties of aerosols generated during electric arc wire-thermal spray coating using five different consumable wires were examined. The metal composition of each was determined by inductively coupled plasma-atomic emission spectroscopy (ICP-AES), including two stainless-steel wires [PMET720 (82 % Fe, 13 % Cr); PMET731(66 % Fe, 26 % Cr)], two Ni-based wires [PMET876 (55 % Ni, 17 % Cr); PMET885 (97 % Ni)], and one Zn-based wire [PMET540 (99 % Zn)]. The particles generated regardless of composition were poorly soluble, complex metal oxides and mostly arranged as chain-like agglomerates and similar in size distribution as determined by micro-orifice uniform deposit impactor (MOUDI) and electrical low-pressure impactor (ELPI). To allow for continuous, sequential spray coating during a 4-hr exposure period, a motor rotated the metal pipe to be coated in a circular and up-and-down direction. In a pilot animal study, male Sprague-Dawley rats were exposed to aerosols (25 mg/m3 × 4 h/d × 9 d) generated from electric arc wire- thermal spray coating using the stainless-steel PMET720 consumable wire. The targeted exposure chamber concentration was achieved and maintained during a 4-hr period. At 1 d after exposure, lung injury and inflammation were significantly elevated in the group exposed to the thermal spray coating aerosol compared to the air control group. The system was designed and constructed for future animal exposure studies to generate continuous metal spray coating aerosols at a targeted concentration for extended periods of time without interruption.

EFFICIENCY OF PESTICIDE APPLICATION BY MECHANIZED AND ROBOTIC SPRAYER

By differentiated application of pesticides in the precision gardening system, mobile robotic sprayers and sprayers with intelligent control, it is possible to ensure a high level of protective measures in gardening, greater efficiency of their implementation, minimize environmental pollution with pesticides. At the development stage, it is necessary to compare traditional and innovative technical means according to various criteria in relation to real production conditions in order to assess the effectiveness of the upgraded technical solution and calculate the economic effect of its use. (Research purpose) The research purpose is conducting a comparative analysis of the economic efficiency of using a fan sprayer for a differentiated method of applying pesticides mounted on a mobile robotic chassis and a similar device of classical layout for continuous spraying aggregated with a tractor. (Materials and methods) The article presents the main indicators for standardized methods, the content of which is described by industry regulatory and technical documents. (Results and discussion) The article presents a list of initial technical and operational indicators of the compared units. To assess the economic efficiency of the use of two variants of technical means, their comparative assessment was made: indicators of operating costs, their savings, annual economic effect, the size and payback period of additional capital investments. (Conclusions) When using a fan sprayer for differentiated application mounted on a robotic mobile power facility, operating costs are reduced by 25.03 percent, but its shift performance is more than 8 times lower than that of a similar solution using MTZ-80. The payback of additional capital investments spent on the innovative technical solution will be 2.19 years.

Performance evaluation of a novel plate-type porous indirect evaporative cooling system: An experimental study

The traditional indirect evaporative cooler (IEC) needs the consistent working of the pump for water spraying to the secondary air channel wall, which consumes an amount of energy and causes the extra pressure drop. Improving the channel surface water retention capacity has drawn research attentions over the years, and using porous materials is expected to deal with this problem. However, there is still lack of quantitative experimental data on the thermodynamic performance of this environmental-friendly heat exchanger. In this study, a plate-type cross-flow indirect evaporative cooler that sintered the porous layer in each secondary air channel surface (PIEC) was proposed and manufactured. A series of experiments were carried out on an established test rig to assess the performance of the PIEC system. It was observed that the air cooling effect could still be observed over time without water supply owing to the water absorbed and retained in the porous layer, which indicated the feasibility of the intermittent spraying plans. Results showed that the PIEC maintained the supply air temperature up to 2105 s within 0.5 °C fluctuation under the test conditions without spraying water, lessening 94.6% of the operation time of the water system. Therefore, the power consumption was significantly reduced. The coefficient of performances (COPs) were enhanced by 117.5% on average compared with the conventional continuous spraying mode. In addition, the pressure drop of secondary channels was measured to be lower in the non-spraying mode than in the spraying mode. Eventually, the present experimental study recommended to combine the PIEC as a pre-cooling air-conditioning device with the air handling unit to guarantee the required outlet air temperature for the indoor environment.

SiO2/MXene/Poly(tetrafluoroethylene)-Based Janus Membranes as Solar Absorbers for Solar Steam Generation

Water treatment through interface photothermal conversion using solar energy is a sustainable strategy for freshwater supply. Because the preparation method of highly efficient photothermal conversion materials with commercial value is the only way for the industrialization of solar steam generation, the preparation method and the rational design of photothermal materials are particularly important. In this work, the high-efficiency photothermal conversion material MXene nanosheets and low thermal conductivity SiO2 were coated on a hydrophilic poly(tetrafluoroethylene) (HPTFE) membrane by a commercial continuous spraying system to produce a SiO2/MXene/HPTFE Janus membrane. They possess excellent mechanical properties, high stability, and 93.0% light absorption. The prepared evaporator can be used for water treatment with a photothermal evaporation rate of 1.53 kg m–2 h–1, achieving a uniform and effective 85.6% solar thermal conversion efficiency, which is superior to most reported work. The removal rate of wastewater and organic pollutants can reach 99.9%. At the same time, the two-dimensional Janus membrane has excellent salt resistance and self-cleaning ability, making it easy to store and transport. It is also used to build sensor systems. The sensor has an excellent light response and can accurately measure solar radiation density and temperature in a short time. Therefore, the use of commercial spraying systems provides a cost-effective and energy-saving strategy for photothermal evaporators and sensors to reduce the use of photothermal materials, achieve higher photothermal evaporation rates, and expand the application direction of photothermal materials.

Corrosion behavior of a non-equiatomic CoCrFeNiTi high-entropy alloy: A comparison with 304 stainless steel in simulated body fluids

A new type of non-equiatomic Co40Fe35Cr16Ni8Ti1 HEA was designed and synthesized, and its corrosion resistance was compared with 304 SS in Hank's simulated body fluids to verify its feasibility as an alternative for existing coronary stent materials. Electrochemical tests showed that the corrosion current density of Co40Fe35Cr16Ni8Ti1 HEA was 10−6 in order of magnitude, which was about 1/6 of that of 304 SS, and the impedance value of Co40Fe35Cr16Ni8Ti1 HEA was 105 in order of magnitude, which was about 7 times that of 304 SS. Scanning electron microscopy testing showed that after 120 h of continuous salt spray corrosion, the surface of 304 SS showed obvious corrosion morphology compared with Co40Fe35Cr16Ni8Ti1 HEA, and it was corroded with clear grain boundaries. After 6 h of potentiostatic polarization, a passive film was formed on the surfaces of Co40Fe35Cr16Ni8Ti1 HEA and 304 SS respectively, and the composition of the passive film of the two materials was analyzed by X-ray electron spectroscopy. Compared with 304 SS, the passive film formed on Co40Fe35Cr16Ni8Ti1 HEA is rich in Co and Cr elements, and the high Content of Cr and Ni makes Co40Fe35Cr16Ni8Ti1 HEA have higher corrosion resistance in Hank simulated body fluid. The high content of Fe2+ oxide in the passive film is the main reason why 304 SS is less resistant to corrosion than Co40Fe35Cr16Ni8Ti1 HEA in Hank's simulated body fluid.

Study on dust diffusion characteristics of continuous dust sources and spray dust control technology in fully mechanized working face

When the roadheader works, it will produce a lot of dust, causing serious dust pollution to the roadway. In order to solve the problem of dust pollution in fully mechanized working face, the dust pollution law of roadway and the low surface tension spray dust removal technology of heading head were studied by fluid solid coupling simulation analysis software FLUENT. The results show that the optimum pressure of the spray head is 3.0 MPa, the droplet size of 50% is less than 3.00E-05 m, and the spray angle is 35 degrees. Reducing the surface tension of the solution can improve the atomization effect; When the surface tension drops to 61.9 mN/m, the spray size can be reduced obviously. Injection scheme D is the best injection scheme. Finally, according to the simulation results, the design of low surface tension spray dust suppression device for roadheader is carried out. The test and field application are carried out. The field application analysis shows that the dust reduction rate can reach 90%, and the dust reduction rate of respiratory dust can reach 85%.

Technology of strip chemical treatment in the resource-saving system of agriculture in Volgograd region

To preserve and restore disturbed lands and reduce the damaging impact on air, plants and soil, it is necessary to apply resource-saving technologies. Strip-till technology is recommended for tilled crops. The technical solution is offered to increase the efficiency of the working solution use due to the rational distribution on the objects of influence and increase of its uniformity. That is, it is possible to reduce the hectare rate of consumption of the working solution by using the method of strip chemical treatment of plants. This is achieved by the redistribution of the working solution between the row and the row with the cultivated plant. The technical solution is to equip the serial sprayer with two lines with spray nozzles and special separator bodies. After a quick changeover in the field without the use of special tools, it is possible to switch from continuous spraying to strip spraying and back. At switching over to strip spraying, the spray solution is sprayed strictly along the strips of cultivated plant growth and covers the whole surface of stem and leaves. This allows reducing the cost of liquid chemicalization agents application and accurately redistributing the working solution.

Performance enhancement of intermittent spray cooling with a self-rewetting fluid for relatively high-temperature applications

Comparing to continuous spray, intermittent spray is able to offer effective cooling by consuming less liquid. Targeting at relatively high-temperature applications, this study explores the influences of pulse duration and duty cycle (DC) in the cooling performance of the intermittent spray of a self-rewetting fluid, the 1.5% wt.% aqueous solution of 1-pentanol. Unlike water, using the self-rewetting fluid in intermittent spray is able to induce the inverse Marangoni convection which helps to replenish the hot spot with cool liquid even though the surface temperature exceeds 145°C. This leads to a further reduction in fluid consumption because comparable cooling rate can be delivered by spraying the self-rewetting fluid at a much lower frequency. Although dryout can still occur in the low DC regime, the inverse Marangoni convection is proven to sustain effective cooling during spray-off period in the high DC regime. As a result, cooling rate is nearly independent of DC in the high DC regime. For the self-rewetting fluid, cooling performance is not benefited from increasing the pulse duration as excess fluid simply drains out without contributing much to heat removal. Hence, a pulse duration of 1.5 s with a DC of 15% is recommended for the intermittent spray cooling of 1-pentanol/water mixtures at high wall superheats. Since the spray cooling efficiency of the self-rewetting fluid is always higher than that of water in this study, it opens up new possibility in spray quenching with more rapid cooling, better thermal uniformity, and further reduction in liquid consumption.

Comparison of the rusting behaviors of S450EW weathering steel under continuous spray and wet/dry cycling

The rusting behaviors of S450EW weathering steel under exposure conditions of continuous spray and wet/dry cycling were comparatively studied through electrochemical tests and characterizations on rust layers. Wet/dry cycling promotes the formation of γ-FeOOH and its transformation to α-FeOOH rather than to Fe3O4, inducing a lower content of Fe3O4/γ-Fe2O3 than that under continuous spray. The rust layer formed under wet/dry cycling presents less compositional segregation and structural stratification. Wet/dry cycles promote the diffusion of oxygen and ions and make rust formation and evolution proceed more equally at any thickness of the rust layer through the migration of the air/electrolyte interface.

Effects of temperature on acceleration and simulation of indoor corrosion test of Q235 carbon steel

PurposeThe purpose of this paper is to study the influence of temperature on the acceleration and simulation of indoor corrosion tests and the corrosion behavior of Q235 carbon steel.Design/methodology/approachThe indoor corrosion test was carried out by continuous salt spray in a salt spray chamber. Weight loss analysis, X-ray diffraction, cannon 1500 D, scanning electron microscopy and electrochemical techniques are used to analyze the results.FindingsIt was found that thickness loss of Q235 carbon steel increases with higher temperature and it can reach 0.095 mm at 50°C. Compared with the Xisha exposure test, the acceleration rate can achieve 230 times. This phenomenon indicates that decreasing the experimental temperature is beneficial to the anti-corrosion of the Q235 carbon steel. It is fascinating to find that acceleration and simulation increase with temperature simultaneously, which shows that β-FeOOH promotes the corrosion rate and α-FeOOH provides high simulation. Meanwhile, electrochemical impedance spectroscopy indicates that the resistance of the rust layer improves with temperature.Practical implicationsThrough the study, the authors found that with the increase of temperature, the acceleration and simulation of indoor corrosion test improved, corrosion products and kinetics are the same as those in outdoor exposure test, and which means that the laboratory can achieve the long-term corrosion degree of outdoor exposure in a short time, and the similarity with outdoor exposure is high. This helps to the study of marine atmospheric corrosion, and indoor accelerated corrosion tests can largely eliminate regional differences by adjusting some environmental factors, and lay a foundation for marine atmospheric corrosion.Originality/valueThe effects of temperature on the acceleration and simulation of indoor corrosion tests are discussed. Through laboratory experiments, the long-term service life of Q235 carbon in the Xisha marine atmosphere can be predicted effectively.

Gender-Based Eye Movement Differences in the Ilab-X Platform Using: An Eye-Tracking Study

Continuous fluidized bed spray granulation processes are known to be prone to non-linear oscillations, which requires a stabilizing controller design. In this article, a purely data-driven Koopman-based system linearization and control is proposed, which does not need any prior model knowledge and uses only systems input-output measurements. The linearization achieved by the Koopman embedding allows for linear-quadratic control design, which does not depend on the operating point. The proposed method was validated in a simulation study of a fluidized bed granulation process and was able to stabilize the particle size distribution in different operating points.

Innovative method of strip-till 3-D spraying in chemical treatment of crops to implement resource-saving approaches in strip-till technology

A new approach to the technology of chemical treatment of crops based on the technological process of volumetric 3-D spraying, which differs favorably from the classical technology of continuous spraying, is developed. The development makes it possible to competently and efficiently apply working chemical solutions depending on the phase of growth and development of the cultivated plant on the object of treatment. When designing the technological process of volumetric 3-D spraying, the architectural features of the cultural plant were taken into account. The applied approach to the application of the working solution to the plant allows combining the methods of solid and strip spraying. For this purpose, a technical solution is offered to retrofit a serial boom sprayer with special bodies for separation of liquid flows and directing the liquid to the object of treatment. In this case a new, more stable flow in width and height is formed. The paper considers the results of studies of the technological process of chemical treatment with the use of strip technology in terms of quality indicators. The technical solution makes it possible to perform fast equipment adjustment in the field without using special tools. At the same time, it is possible to switch from solid spraying to strip spraying and vice versa. When switching to strip spraying, the spray solution is sprayed strictly along the strips of the crop and covers the entire surface of the stem and leaves. This allows you to reduce the cost of applying liquid chemicals and accurately redistribute the spray solution. As a result of the technology the goals of reducing costs, improving the quality of chemical treatment and increasing the environmental friendliness of the chemicalization process are achieved.

Optimization of maltodextrin (10DE)—Sucrose moderated microwave osmotic dehydration of mango cubes under continuous flow spray mode (MWODS) conditions

AbstractThe process of microwave osmotic dehydration of mango was optimized under continuous flow medium spray conditions (MWODS) with maltodextrin (10DE) moderated sucrose solutions. Optimization was carried out using a response surface methodology with a central composite rotatable (CCRD) design with three input variables at five levels (temperature, 33°C to 66.7°C; sucrose:maltodextrin ratio from 100:0 to 80:20; and solute concentration, 33 to 66.7%). The response parameters used for optimization were moisture loss (ML), solids gain (SG), weight reduction (WR), ML/SG ratio, color and texture values. For each response, RSM models (p < .05) were developed. As expected, all output variables were responsive to process variables and addition of maltodextrin to sucrose was found to have a significant effect on reducing the SG and increasing ML/SG, and total solute concentration had significant effects on ML, SG and quality parameters. The process was optimized by desirability approach and MWODS at 56°C with total osmotic solute 46% concentration and 84:16 sucrose:maltodextrin proportion had the highest desirability value. Selection of constraints was an influential factor as well.Practical ApplicationsOsmotic dehydration (OD) has many advantages, but is a slow process. Carrying out OD in MW environment accelerates the process, enhances moisture loss (ML) and limits the solids gain (SG). The quality of OD foods is related to ML/SG ratio and the MWOD process enhances ML/SG. This can be further enhanced by incorporating high molecular solutes like maltodextrins. This research optimizes the maltodextrin moderated MWOD process under continuous medium flow conditions. The process offers significant potential for reducing the treatment time (to 30 min) and improve the ML/SG ratio. The resulting product can be finish dried, used as intermediate moisture food or frozen (dehydrofreezing).

Effect of Heat Treatment Conditions on Corrosion Resistance of 0.28C-1.4Mn-0.3Si-0.26Cr Steel with Nb, Ti, and V Microadditions.

The article presents the results of the research on the influence of heat treatment conditions on corrosion resistance of newly developed HSLA-type (High Strength Low Alloy) steel in selected corrosive environments. Laboratory tests were carried out with using a salt spray chamber, enabling the continuous spraying of brine mist (5% NaCl) during 96 h under high humidity conditions. Additionally, as part of corrosion experiments, tests were carried out using the gravimetric method, in which the intensity of corrosive processes was measured by the linear corrosion rate. The research conducted revealed that the best corrosion resistance was noted for steel with a high-temperature tempered martensite microstructure. Investigated 0.28C–1.4Mn–0.3Si–0.26Cr steel with Nb, Ti, and V microadditions can be used in offshore drilling constructions and production platforms exposed to salts present in sea water, chlorides, sulfates, carbonates, and bromides, among others.

Kernel identification in continuous fluidized bed spray agglomeration from steady state data

Fluidized bed spray agglomeration is an important industrial particle formation process. In particular, the continuous operation mode is able to provide a constant stream of product particles with constant quality in terms of particle properties. Mathematical process modeling represents a valuable tool for a thorough analysis of the involved mechanistic processes and can further be used for process intensification and control. Sophisticated models describing the quantitative effect of process conditions on particle properties are particularly important. Therefore, in this contribution the influence of the seven most important operational parameters on the particle size distribution is modeled, including fluidization and binder properties. To this end, a population balance process model with the three-parametric Kapur kernel is fitted to experimental data. The first main result of this contribution is the quantitative description of the dependency between the agglomeration rate and the process conditions by multidimensional paraboloids. The second main result is the introduction of a general method by which this quantitative formulation is obtained.

Large-Scale Spraying of Roads with Water Contributes to, Rather Than Prevents, Air Pollution.

Spraying roads with water on a large scale in Chinese cities is one of the supplementary precaution or mitigation actions implemented to control severe air pollution events or heavy haze-fog events in which the mechanisms causing them are not yet fully understood. These air pollution events were usually characterized by higher air humidity. Therefore, there may be a link between this action and air pollution. In the present study, the impact of water spraying on the PM2.5 concentration and humidity in air was assessed by measuring chemical composition of the water, undertaking a simulated water spraying experiment, measuring residues and analyzing relevant data. We discovered that spraying large quantities of tap or river water on the roads leads to increased PM2.5 concentration and humidity, and that daily continuous spraying produces a cumulative effect on air pollution. Spraying the same amount of water produces greater increases in humidity and PM2.5 concentration during cool autumn and winter than during hot summer. Our results demonstrate that spraying roads with water increases, rather than decreases, the concentration of PM2.5 and thus is a new source of anthropogenic aerosol and air pollution. The higher vapor content and resultant humidity most likely create unfavorable meteorological conditions for the dispersion of air pollution in autumn and winter with low temperature.

Koopman-based data-driven control for continuous fluidized bed spray granulation with screen-mill-cycle

Continuous fluidized bed spray granulation processes with external screen-mill cycle are known to be susceptible to nonlinear oscillations. As has been shown recently, mass control may induce periodical oscillation of the particle size distribution in fine grinding regimes, which requires the design of additional stabilizing control. In this contribution a data-driven control approach is investigated. It is based on the identification of the Koopman-based linear representation of the system and does not require any manual system modeling as it is based purely on input–output measurements. The resulting representation makes possible a linear–quadratic control design, that does not depend on a specific operational point. The proposed approach was successfully validated in a numerical study.