Abstract
In order to evaluate the effect of inert powder on the ignition sensitivity of sucrose dust, this study investigated the effects of NaHCO3, NaCl, NH4H2PO4 and Al(OH)3 on the minimum ignition energy (MIE) of sucrose dust. The results showed that all four different inert powders inhibited the MIE of sucrose dust, and all of them showed a trend that the smaller the particle size of the inert powders, the better the inhibition effect. The inhibition effect was ranked as NaHCO3 > NH4H2PO4 > NaCl > Al(OH)3. NaHCO3 and NH4H2PO4 had both physical and chemical inhibition effects, which were better compared to NaCl and Al(OH)3, which had only physical inhibition effects. Analysis of the flame images showed that the inert powder slowed down the combustion of the sucrose dust flame and reduced the flame height. No flame appeared in the region of higher inert powder concentration.
Highlights
Jin et al [22] studied the effect of particle size of alumina on the explosion of aluminum powder, and the results showed that the chemical inhibition of the thermal radiation process by alumina is its main inerting mode, and the smaller the particle size of alumina, the better its inhibition effect
Qin and Li [24] tested the effects of NH4 H2 PO4 and Al(OH)3 on the combustion of sucrose dust by separately testing the effects of NH4 H2 PO4 and Al(OH)3 in different particle size states, and found that both inert powders could inhibit the combustion of sucrose dust
Studied the effect of NaCl on the combustion of different mass fractions of sucrose dust, and the results showed that the inhibition effect of NaCl dust with a particle size larger than 75 μm was not good, whereas the inhibition ability of NaCl with 38–47 and 48–74 μm was better, and the inhibition effect was relatively close
Summary
Qin and Li [24] tested the effects of NH4 H2 PO4 and Al(OH) on the combustion of sucrose dust by separately testing the effects of NH4 H2 PO4 and Al(OH) in different particle size states, and found that both inert powders could inhibit the combustion of sucrose dust They found that NH4 H2 PO4 had physical inhibition and chemical inhibition, and its inerting ability was significantly better than that of Al(OH). In this paper, based on the existing studies [24,25], we set the same experimental conditions, added carbonates for experiments, and used NaHCO3 , NaCl, NH4 H2 PO4 and Al(OH) with different particle sizes for minimum ignition energy experiments in order to compare their inhibitory effects on the ignition sensitivity of sucrose dust
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
