CAJ | 학술논문

针对陕北某天然气净化厂脱水系统中原料气水含量偏高、产品气无法满足国标要求这一生产难题,本文利用ChemCAD对该脱水系统进行了全流程模拟,研究分析得到最佳的优化操作参数为：TEG循环量为6.16m3/h,原料气进气温度为33℃。通过FRI、HTRI和Pipe Flow Expert等专业软件对系统改造后的关键设备及管线进行优化,核算结果表明,脱水塔的各个流体力学参数均可满足生产需要;套管换热器换热能力不足,通过对比分析可知选用高效板式换热器替代在役套管换热器是一种较为经济、合理的优化方案;通过提高原料气预冷器换热管束的表面翅化率可以有效改善它的换热效果,使其达到系统指定的换热要求。研究结果可为该脱水系统的升级改造提供可靠的理论依据,对同类型装置亦具有一定的借鉴作用。
침대협북모천연기정화엄탈수계통중원료기수함량편고、산품기무법만족국표요구저일생산난제,본문이용ChemCAD대해탈수계통진행료전류정모의,연구분석득도최가적우화조작삼수위：TEG순배량위6.16m3/h,원료기진기온도위33℃。통과FRI、HTRI화Pipe Flow Expert등전업연건대계통개조후적관건설비급관선진행우화,핵산결과표명,탈수탑적각개류체역학삼수균가만족생산수요;투관환열기환열능력불족,통과대비분석가지선용고효판식환열기체대재역투관환열기시일충교위경제、합리적우화방안;통과제고원료기예랭기환열관속적표면시화솔가이유효개선타적환열효과,사기체도계통지정적환열요구。연구결과가위해탈수계통적승급개조제공가고적이론의거,대동류형장치역구유일정적차감작용。
The water content of the feed gas in dehydration system for a natural gas purification plant located in northern Shaanxi was too high and product gas could not meet the national standard.In order to resolve the problem ChemCAD was used to simulate the whole process and analyze the main influence factors.The best optimized operating parameters were as follows:the circulation quantity of TEG was 6.16m3/h,the temperature of feed gas was 33℃.Some professional software containing FRI,HTRI,Pipe Flow Expert and so on were used to optimize the relevant key equipment and pipelines after system transformation.The calculation result demonstrated that hydrodynamic parameters of TEG contactor would satisfy the operation requirement.The duty of jacketed pipe exchanger was deficient.The contrast analysis result showed that the selection of an efficient plate heat exchanger to replace the jacketed pipe exchanger in service was an economical and reasonable optimization method.The bundle finning ratio of feed gas precooler needed to be increased to improve heat transfer in order to be qualified for the specified heat demand.The above conclusions provided a reliable theoretical proof for dehydration system optimization and valuable reference for the same types.