摘要
介绍了神华鄂尔多斯煤制油分公司首次采用液氨为制冷介质的轻烃回收工艺,分析了其运行情况。结果表明:采用吸收塔、脱吸塔、稳定塔的三塔轻烃回收工艺,吸收塔塔顶温度控制在18.4℃,较之现有成熟的吸收稳定系统的经典流程(吸收塔-再吸收塔-脱吸塔-稳定塔)节省了再吸收塔以及相应的配套设备,简化了流程配置;产出的干气中C3+体积分数仅为1.96%,液化气中C5+体积分数为0.07%,满足国家标准GB 1174—1997液化石油气中C5+体积分数不大于3.0%的要求,并且C3收率为94.0%,比吸收稳定系统经典流程的C3收率高;原料、制冷的液氨均来自其它单元,可降低生产成本,实现装置间资源优化和整合。
The light hydrocarbon recovery process by the use of ammonia refrigeration technology in Shenhua Erdos CTL Branch Co.was introduced.The operation practices indicate that the re-adsorption tower and ancillary facilities can be omitted from the original classical recovery process consisting of adsorption tower,re-adsorption tower,desorption tower and stabilizer when the ammonia technology is used and the temperature at the top of adsorption tower is controlled at 18.4℃.The C3＋volume fraction in dry gas is only 1.96%,while C5＋volume fraction in LPG is 0.07%,which meets the national standard of not more than 3.0%.The C3 yield reaches 94.0%,higher than the classical light hydrocarbon recovery process.In addition,raw material and liquid ammonia are from other units which can reduce the production cost and is good for resource optimization and integration between units.
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2014年第11期85-88,共4页
Petroleum Processing and Petrochemicals
关键词
轻烃回收
液氨
整合
工艺
应用
light hydrocarbon recovery
liquid ammonia
integration
process
application
