Abstract
The object of research is the efficiency of cleaning of flue gases in group cyclones of CN-15 type with a diameter of 0.7 m steam boiler KE10-14-285 when burning sunflower husk at an oil and fat plant. One of the biggest problems of different sunflower husk combustion technologies in boiler units at oil and fat plants is the low efficiency of trapping in typical cyclones of sunflower husk ash due to the considerable dispersion of ash and other factors.The estimation was made by the use of the developed analytical models and computer technology CFD – Computational Fluid Dynamic of the Certified SolidWorks-2009 computer program on the settlement complex (KPI).The calculated and experimental data on the estimation of the efficiency of flue gas cleaning in cyclones of the steam boiler «KE 10-14-285» (Ukraine) during the combustion of sunflower husk at the Vinnytsia Oil and Fat Plant (Ukraine) is given. The possibility of significant reduction of ash removal into the air during reconstruction according to of new technology of group cyclones type CN-15 (Ukraine) is shown. Using computer and analytical calculations, the possibility of increasing the overall efficiency of flue gas cleaning from ash during combustion in boilers of dream husk is substantiated to 90 % instead of 45…55 %.In the course of the study, the technology of creating high-intensity cyclone cyclones at flow stage with flow of various turbulizers was used at the stepped inlet section. Thanks to this technology, it is possible to reduce the ash removal from cyclone by more than three times compared to similar indicators in typical cyclones prior to their modernization. This makes it possible to satisfy the sanitary standards of the European Union and Ukraine with minimal capital expenditure. This result is achieved due to a number of features – in particular, a sharp increase in the ripple component of the flow rate.
Highlights
The capture of finely dispersed ash in cyclones, when burning sunflower husks in boiler units, is associated with significant difficulties
It is extremely important to develop various methods and technologies to increase the efficiency of ash collection in dust collectors when burning sunflower husks in boiler units
The object of research is the efficiency of flue gas cleaning in group cyclones of type CN-15 with a diameter of 0.7 m steam boiler KE 10-14-285 when burning sunflower husks at an oil-fat plant
Summary
The capture of finely dispersed ash in cyclones (with a median particle diameter of 5...7 microns and with a number of densities), when burning sunflower husks in boiler units, is associated with significant difficulties. This is due to the fact that the efficiency of cyclones in such conditions is insignificant and amounts to 45...55 %, on average, even with spherical combustion, and even lower with vortex combustion. The final dust content of the sunflower husk ash in the flue gases was: with a spherical method of burning on gratings, 500...600 bmg/m3, and with vortex burning – 1500 mg/m3 This significantly exceeds the requirements of sanitary standards of the EU and Ukraine (50...100 mg/m3 – depending on the thermal capacity of steam boilers). It is extremely important to develop various methods and technologies to increase the efficiency of ash collection in dust collectors when burning sunflower husks in boiler units
Sign-in/Register to view highlights & summary 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 callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
