天然气净化厂降本增效实践与探索

Practice and exploration on cost reduction and efficiency improvement in natural gas purification plant

随着川东地区天然气开采进入中后期,某天然气净化厂川东地区原料气处理量呈逐年下降趋势,存在部分工艺参数偏离设计值,能源消耗和化工原材料消耗相对较高,装置长期处于低负荷运行状态,生产成本增加,以及产品气质量有待升级和尾气排放达标治理等问题,在推进智能净化厂建设存在诸多挑战。为了解决以上问题,通过对某天然气净化厂的生产运营情况进行分析,从优化脱硫装置工艺流程、实施技术改造、调整现场操作及相关参数、总结生产经营管理经验等方面,提出修旧利旧、天然气余压发电、电站无人值守推行智能净化厂建设等措施,助推天然气净化厂实现降本增效。研究成果可为类似天然气净化厂降本增效提供推广应用经验。

As the natural gas exploitation of Southwest Oil and Gas Field in eastern Sichuan enters the middle and late stage,the required raw feed gas treatment capacity of one natural gas purification plant,as a key link in the natural gas treatment process,shows a downward trend year by year.There are some problems such as deviation of some process parameters from the design value,relatively high energy consumption and also high consumption of raw chemical material.The process unit is in low load operation for a long time,resulting in increased production costs.There are also other challenges such as product gas quality upgrading and tail gas emission treatment to meet standards.There are many challenges in promoting the construction of “intelligent purification plant” and digital transformation.Based on the analysis of the production and operation of one natural gas purification plant,this paper puts forward measures such as repairing and reusing the existing,power generation using natural gas residual pressure,unattended power station and promoting the construction of intelligent purification plant by optimizing the process flow of desulfurization unit,timely technical transformation,adjusting on-site operation and relevant parameters,summarizing the experience of production,operation and management,so as to promote the low-cost and high-quality development of the natural gas purification plant and achieve the goal of reducing cost and increasing efficiency.This study provides experience and references for application of cost reduction and efficiency improvement measures on natural gas purification plants of the same nature.