液体二氧化碳装置运行中存在问题与优化对策  

PROBLEMS EXISTED IN LIQUID CARBON DIOXIDE PLANT AND OPTIMIZATION MEASURES

作　　者：王涛 Wang Tao(Hengli Petrochemical(Dalian)Refining and Chemical Co.,Ltd.,Dalian 116318)

机构地区：[1]恒力石化(大连)炼化有限公司,辽宁大连116318

出　　处：《大氮肥》2024年第2期90-93,108,共5页Large Scale Nitrogenous Fertilizer Industry

摘　　要：液体二氧化碳装置以低温甲醇洗装置排放的高纯度二氧化碳尾气为原料气,通过脱除原料气中的水、硫化氢、羰基硫、氨气、甲醇等一些轻组分,把二氧化碳提纯到99.9%以上,气体经压缩、净化、液化,达到国家食品添加剂的标准后再制得高纯食品级液体二氧化碳。分析该装置运行中残气排放引发现场可燃气体及有毒有害气体报警仪报警、吸收剂粉化及压缩机低负荷运行时能耗损失等问题,挖掘节能降耗措施,优化生产运行参数,确保装置经济、安全、稳定运行。The liquid carbon dioxide device mainly uses the high-purity carbon dioxide tail gas emitted from the low-temperature methanol washing device as the feed gas.By removing some light components such as water,hydrogen sulfide,carbonyl sulfur,ammonia and methanol from the feed gas,carbon dioxide is purified to over 99.9%,and the gas is compressed,purified and liquefied to achieve the national standard of food additives.Some problems were analyzed,e.g.during the operation,the tail gas from the plant may activate flammable gas,toxic and hazardous gas alarm,the absorbent agent becomes pulverized,and the compressor operates under low load,causing energy loss.Measures for energy saving and consumption reduction,and the optimization of process parameters were taken to guarantee the economic,safe and stable operation of the plant.

关 键 词：液体二氧化碳装置 残气排放 吸附剂粉化 低负荷能耗 

分 类 号：TQ116.3[化学工程—无机化工]