摘要
以某60万吨/年煤制甲醇装置为背景,选取气化与变换单元为研究对象,利用夹点技术对其用能现状进行了分析,找出违背夹点规则的不合理换热匹配并提出2套优化方案,结果如下:方案1:减少副产0.3Mpag蒸汽53.8%(工厂该品质蒸汽过剩),增产1.2 Mpag蒸汽6.5%,新增产2.5 Mpag蒸汽18.83Mw;方案2:减少0.3Mpag蒸汽51.0%,增产1.2 Mpag蒸汽22.2%。当1.2与2.5 Mpag蒸汽价格相差不大、设备材料费用较高时,方案2优于方案1。
The energy efficiency of coal gasification and CO shift process of a 600 kt/a coal to methanol device was studied through pinch technology. The results showed that the existing process had a huge energy saving potential because a great amount cross pinch heat transfer existed there. In order to recover high grade energy from this process, two suggested solutions were published in this paper. Solution 1： reducing 0.3 Mpag steam by 53.8 % which is overproduction in current factory; increasing 1.2 Mpag steam by 6.5 % and newly producing 2.5 Mpag steam 18.83 MW. Solution 2： reducing 0.3 Mpag steam by 51.0 % and increasing 1.2 Mpag steam by 22.2 %. If the price difference between the 1.2 and 2.5 MPag steams is small and the equipment material is expensive, the solution 2 is better.
出处
《计算机与应用化学》
CAS
CSCD
北大核心
2014年第5期601-604,共4页
Computers and Applied Chemistry
关键词
夹点技术
换热网络
煤炭气化
变换
煤制甲醇
pinch technology
heat exchanger network（HEN）
coal gasification
shift process
coal to methanol
