CAJ | 학술논문

介绍了顺丁橡胶生产装置溶剂回收单元的工艺流程及操作状况,用己烷溶剂取代抽余油后,进行了降低溶剂脱重塔(T-463)塔釜温度及其回流量的可行性计算,分析了改造溶剂脱水塔(T-462)塔釜采出溶剂的工艺可行性.结果表明,将T-463塔釜温度由(108±5)℃降低到(100±5)℃,不仅稳定了系统操作,而且降低了能耗;将T-463回流量由16.00 t/h降至8.00 t/h,并未降低到最低回流量3.36 t/h;T-463进料量最少应保持在44.02 t/h,按照T-462塔底排出物料流量80.00 t/h计算,T-462塔底最多采出量为35.98 t/h;通过合理变更T-462、T-463的工艺参数,溶剂回收单元的能耗得到了降低.
개소료순정상효생산장치용제회수단원적공예류정급조작상황,용기완용제취대추여유후,진행료강저용제탈중탑(T-463)탑부온도급기회류량적가행성계산,분석료개조용제탈수탑(T-462)탑부채출용제적공예가행성.결과표명,장T-463탑부온도유(108±5)℃강저도(100±5)℃,불부은정료계통조작,이차강저료능모;장T-463회류량유16.00 t/h강지8.00 t/h,병미강저도최저회류량3.36 t/h;T-463진료량최소응보지재44.02 t/h,안조T-462탑저배출물료류량80.00 t/h계산,T-462탑저최다채출량위35.98 t/h;통과합리변경T-462、T-463적공예삼수,용제회수단원적능모득도료강저.
The process and operation status of solvent recovery unit of cis-1,4-polybutadiene rubber were introduced. The feasibility of lowering bottom temperature and reflux flow of de-heavy fractionator was analyzed based on chemical engineering calculation after raffinate oil was replaced with hexane as polymerization solvent. The feasibility to regulate the recycling flow of output in dehydrating column bottom was also analyzed. The results showed that not only the system operation was stabilized but also the energy consumption was reduced by lowering bottom temperature of de-heavy fractionator from (108±5)℃ to (100±5)℃. The reflux flow of the fractionator was adjusted from 16.00 t/h to 8.00 t/h, not to the minimum reflux rate 3.36 t/h. Its minimum feed flow should be no less than 44.02 t/h. When the output of dehydrating column was 80.00 t/h, the maximum recycling flow of the column was 35.98 t/h. The energy consumption of solvent recovery unit was remarkably reduced by rational alteration of process parameters of dehydrating column and de-heavy fractionator.