煤气化装置低压闪蒸气回收利用方案探讨  

LOW PRESSURE FLASHING STEAM RECOVERY AND UTILIZATION PLAN IN COAL GASIFICATION PLANT

作　　者：刘广超 王鲁杰 Liu Guangchao;Wang Lujie(SINOPEC Ningbo Engineering Co.,Ltd.,Ningbo315103)

机构地区：[1]中石化宁波工程有限公司工艺系统室 [2]中石化宁波工程有限公司,浙江宁波315103

出　　处：《大氮肥》2021年第5期301-305,共5页Large Scale Nitrogenous Fertilizer Industry

摘　　要：介绍煤气化装置低压闪蒸气的工艺特性及不同回收利用途径的优劣和适用工况,提出利用低压闪蒸气驱动蒸汽喷射真空泵代替水环式真空泵的设想方案。以某煤气化装置为例,优化原黑水闪蒸流程,并进行蒸汽喷射真空泵理论计算,论证方案的可行性。结果表明:喷射泵能有效利用低压闪蒸气低位能,节能降耗效果明显。The process characteristics of low pressure flashing steam and the different way to recover the steam in coal gasification plant were described.The advantage and disadvantage of different recovery methods and their application conditions were reviewed.A plan for using low pressure flashing steam to drive steam jet vacuum pump instead of water ring pump was presented.Taking a coal gasification plant as an example,we improved the original black water flashing process,made the theoretical calculation of steam jet vacuum pump,and studied its feasibility.The result shows that the jet pump can effectively use the low level energy from low pressure steam flashing,and can greatly save the energy and consumption.

关 键 词：煤气化 低压闪蒸气 蒸汽喷射泵 黑水闪蒸 

分 类 号：TQ545[化学工程—煤化学工程]