摘要
由于目前川渝管网高低压分输调压过程中释放的压力能均未得到回收利用,因而造成大量能量损失。为此,对川渝管网调压压力能回收技术进行分析,提出了基于压力能回收的优化运行方法来优化管网运行方案,提高整个管网压力能回收能力;设置了高、低压储气罐并保留旁通传统调压装置来解决调压阀前后存在压力波动的问题;提出了3种不同形式的发电和供冷压力能回收工艺流程来解决各站场压力能回收能力差异很大的问题。分析结果表明:1高低压分输条件下,川渝管网蕴藏着巨大的可回收压力能,若采用透平膨胀机发电,年发电量在2.05×108kW·h以上;2现输送条件下,通过采用基于压力能回收的优化运行调配方案,川渝管网可回收压力能回收能力约可提高5%,且可减少回收站场3座;3提出的发电、供冷压力能回收工艺流程均能够满足川渝管网压力能回收要求。
Insufficient reutilization obtains from pressure release during pressure regulation from high- and low-pressure transmission in Sichuan- Chongqing pipelines, resulting in large energy loss. So, in this study, a reutilization technology of energy regulation was analyzed for the pipelines. A scheme to optimize pipeline-network operation was presented on the basis of pressure-energy reutilization. In order to solve a problem of pressure fluctuation in front of and behind the pressure-regulating valves, both high- and lowpressure gas storages were installed, meanwhile remaining a bypass pressure-regulating facility. Moreover, three reutilization technologies were provided with power generation and cold supply. Results show that(1) under high- and high-pressure transmission, there is huge pressure energy reutilized from the pipelines. If a turbo expander is used for power generation, the annual energy output is above 2.05×108kW·h;(2) through the optimized operation scheme,the reutilization capacity may increase by about 5 %, which may suspend 3 recycle stations; and(3) the presented reutilization technologies of power generation and cold supply can meet the demand of the pipelines.
出处
《天然气技术与经济》
2014年第4期40-44,79,共5页
Natural Gas Technology and Economy
关键词
川渝管网
高低压分输
压力能
节能降耗
回收利用
发电
供冷
Sichuan-Chongqing pipelines,high-and low-voltage transmission,pressure energy,energy saving and consumption reducing,reutilization,cold supply
作者简介
周建（1980－），工程师，从事天然气管输工艺技术研究工作。E-mail：zhoujian_sq@pemx．hina．com．cn。
