【摘要】 以某厂6.5×10~4 t/a硫磺回收项目为研究对象,针对炼油厂醇胺法脱除硫化氢工艺中吸收剂甲基二乙醇胺(MDEA)再生塔的节能开展研究。应用蒸汽压缩式热泵技术,建立了胺再生塔的热泵精馏工艺流程。采用流程模拟软件AspenPlus进行模拟计算,考察了塔板数、再沸比和压缩比等参数对胺液再生工艺的影响,并在保证解吸效果的条件下,以能耗最低为目标,对此过程进行工艺及节能优化。结果表明：与常规精馏相比,热泵精馏工艺的加热能耗与冷却能耗分别减少24.14%和71.10%,显著地降低能耗、提升经济效益。更多还原

【Abstract】 A 65 000 tons/year sulfur recovery project was taken as the research object and the research on energy saving of the regeneration tower of methyldiethanolamine(MDEA) in the process of removing hydrogen sulfide from the refinery by the alcoholamine method was carried out. The heat pump distillation process of the amine regeneration tower was established by using steam compression heat pump technology. The simulation calculation was carried out using the process simulation software Aspen Plus for investigating effects of the number of stages, reboiling ratio and compression ratio on the ammonia regeneration process. Under the condition of ensuring the desorption effect, the process was optimized with the lowest energy consumption. The results showed that in comparison to conventional distillation, the heating energy consumption and cooling energy consumption of the heat pump distillation process were reduced by 24.14% and 71.10%, respectively, which significantly reduced energy consumption and improved economic benefits.更多还原