摘要
提出了一种梯级筛分和内加热流化床结合的新型CMC(coal moisture control)工艺(EN-CMC工艺),其用高比热和高密度的热水作为载热介质,分离原有热烟气的载热和载湿功能,可彻底改变原有流化床CMC工艺的能质流程,并且与马钢投产运行的186t/h新日铁流化床CMC工艺和宝钢投产运行的330t/h蒸汽滚筒式CMC工艺(STD工艺)进行能效对比.结果表明:通过EN-CMC工艺处理后,减少焦炉供热量2.78×10~5 kJ/t(干煤),折合9.50kgce/t(干煤),节能效果达到6.92kgce/t(干煤),比新日铁流化床CMC工艺的节能效果增强53.4%.
A new CMC technology of cascade sieving and fluidized bed with immersed heating tubes （EN-CMC technology） was proposed. The energy and mass flow of the original fluidized bed CMC technology was completely changed by means of hot water as heat carrier which had high specific heat and density, and the previous heat and moisture carrying function of exhaust gas was divided. The energy efficiency among three kinds of CMC technologies was compared, including EN-CMC technology, 186 t/h Nippon steel fluidized bed CMC technology in MA steel and 330 t/h steam drum-type CMC technology in BAO steel. The results indicate that after the process of EN-CMC, coke oven heating quantity can decrease by 2.78 × 10^5 kJ/t （dry coal （DC））, with amounts to 9.50 kgce/t（DC）. The energy-saving effect reaches 6.92 kgce/t （DC）, which is 53.4% higher than Nippon steel CMC technology.
出处
《煤炭转化》
CAS
CSCD
北大核心
2017年第3期64-69,共6页
Coal Conversion
关键词
流化床
焦化
热力学
煤调湿
梯级筛分
fluidized-bed, coking, thermodynamics, coal moisture control, cascade sieving
