化工进展 ›› 2022, Vol. 41 ›› Issue (4): 1770-1780.doi: 10.16085/j.issn.1000-6613.2021-0939

• 化工过程与装备 • 上一篇    下一篇

不同开车工况对天然气脱碳装置响应特性影响

王玉娟1,2(), 唐建峰1(), 花亦怀3, 陈静1, 桑伟1, 刘云飞1   

  1. 1.中国石油大学(华东)储运与建筑工程学院,山东 青岛 266580
    2.中国石化青岛液化天然气有限责任公司
    1.山东 青岛266000,中海石油气电集团有限责任公司技术研发中心,北京 100027
  • 收稿日期:2021-04-30 修回日期:2021-07-29 出版日期:2022-04-23 发布日期:2022-04-25
  • 通讯作者: 唐建峰 E-mail:upcwangyujuan@126.com;tangpaper@126.com
  • 作者简介:王玉娟(1995—),女,硕士研究生。E-mail:upcwangyujuan@126.com

Influence of different start-up conditions on response characteristics of natural gas decarbonization device

WANG Yujuan1,2(), TANG Jianfeng1(), HUA Yihuai3, CHEN Jing1, SANG Wei1, LIU Yunfei1   

  1. 1.College of Pipeline and Civil Engineering, China University of Petroleum (East China), Qingdao 266580, Shandong, China
    2.Qingdao LNG Co. , Ltd. , SINOPEC, Qingdao 266440, Shandong, China
    3.CNOOC Gas & Power Group Research & Development Center, Beijing 100027, China
  • Received:2021-04-30 Revised:2021-07-29 Online:2022-04-23 Published:2022-04-25
  • Contact: TANG Jianfeng E-mail:upcwangyujuan@126.com;tangpaper@126.com

摘要:

由于气田及输送环境影响,现场运行长期处于波动状态,而装置能否稳定运行与其在不同工况下的响应动作是否及时有效息息相关。为分析装置在不同开车工况下的响应特性,本文基于实验室建有的天然气脱碳循环实验装置实际运行情况进行优化研究,分析其中关键影响因素。研究结果表明,在单因素实验研究中,开车工况下不同进气流量、塔内压力以及贫液进塔温度对于吸收塔内温度场及闪蒸罐液位响应特性的影响差别不大。而对于开车工况处于较大的进气流量、较高的塔内压力、较低或较高的贫液进塔温度,其控制器响应会出现一定延迟或塔釜液位波动幅度较剧烈的情况。因此以吸收塔塔釜液位响应时间为评价指标,利用BBD设计法对各因素交互作用进行响应面分析,得到吸收压力对塔釜液位响应时间的影响极显著,并且在三种因素交互作用中,吸收压力与贫液进塔温度的交互作用对目标值的影响更为显著。

关键词: 天然气脱碳, 醇胺法, 开车工况, 响应特性

Abstract:

Due to the influence of the gas field and the transportation environment, the field operation has been fluctuating for a long time, and the stable operation of the device is closely related to whether the response action under different working conditions is timely and effective. In order to analyze the response characteristics of the device under different operating conditions, an optimization study was carried out based on the actual operation of the natural gas decarbonization cycle experimental device built in the laboratory, and the key influencing factors were analyzed. The research results showed that in the single-factor experimental study, the influence of different intake air flow, tower internal pressure and lean liquid inlet temperature on the temperature field in the absorption tower and the response characteristics of the flash tank liquid level under start-up conditions had little difference. However, when the starting condition was at a large inlet flow, a high tower pressure, and a low or high lean liquid inlet temperature, the controller response would be delayed to a certain extent or the level fluctuation of the tower kettle was severe. Therefore, taking the response time of the bottom of the absorption tower as the evaluation index, and using the BBD design method to conduct a response surface analysis of the interaction of various factors, it was found that the absorption pressure had a very significant impact on the response time of the bottom of the tower, and the three factors interact with each other. Among them, the interaction between the absorption pressure and the temperature of the lean liquid entering the tower had a more significant impact on the target value.

Key words: natural gas decarbonization, alcohol amine, start-up conditions, response characteristics

中图分类号: 

  • TE644