摘要
轻油裂解法生产液体氰化钠过程中,存在大量的余热,一部分热量将原料预热,其余热量通过循环冷却水带出系统后经凉水塔排至环境中,浪费了大量热能。介绍了一种化工生产中的余热回收利用方法。通过对氰化钠车间的工艺、设备及管道进行改造,将氰化钠生产余热替代蒸汽引入厂区供暖及加热设备中,对裂解余热加以利用,并对余热能效进行计算。结果表明,氰化钠余热利用后每年可回收大量热能,节省了煤的用量,减少了环境污染。
There is a lot of waste heat being generated during the production of liquid NaCN by light oil cracking process.Part of heat is used for preheating the raw materials and the remaining heat is taken out of system through recycling cooling water and discharged to the atmosphere by the cold water columns.Therefore,a lot of heat energy is wasted.A reusing method of waste heat in the industrial chemical production was introduced.The generated waste heat could be brought into heating sys- tem of factory to replace steam after the reconstruction of technology, equipment, and pipeline in the NaCN workshop.Thus the waste cracking heat could be reused.After calculation of waste heat energy efficicncy, a lot of waste heat could be recycled annually. The reconstruction could not only save the coal consumption, but also could reduce environment pollution.
出处
《无机盐工业》
CAS
北大核心
2013年第4期44-45,共2页
Inorganic Chemicals Industry
关键词
轻油裂解
氰化钠
余热利用
light oil cracking
sodium cyanide
waste heat reusing
