Practical Exploration of Energy Saving Transformation of Low Temperature Methanol Washing Unit
In the 11-tower low-temperature methanol washing process designed by Linde,Germany,the waste gas generated by the CO2 flash tank is reheated by the raw gas cooler II and then discharged to the flare system.The analysis of the waste gas generated by the CO2 flash tank during production and operation finds that the content of effective components is high.Therefore,the paper proposes to transform the existing circulating compressor of Yili Xintian Coal Chemical Co.,Ltd.After pressurizing the waste gas,part of the effective components are recovered and the other part is returned to the gasifier to be used as gasification agent,which reduces the steam consumption in the pressurized gasification process of the gasifier and can increase the natural gas output and increase the production efficiency.The effective gas produced by the secondary flash of sulfur-rich methanol and the effective gas produced by the medium pressure device are introduced into the feedstock gas system after the pressure is raised by the waste gas compressor,and the effective components are recovered to solve the operation problems for enterprises and create economic benefits.
low temperature methanol washing devicerecycleenergy conservationenvironmental protectioncreate benefits
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