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

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

Natural gas

Gas industry

Liquids

Surface analysis

Towers

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. 2022, Chemical Industry Press Co., Ltd. All right reserved.

1770-1780

4

41

Huagong Jinzhan/Chemical Industry and Engineering Progress

2022

Wang, Yujuan

Tang, Jianfeng

Hua, Yihuai

Chen, Jing

Sang, Wei

Liu, Yunfei

journalArticle

10006613

10.16085/j.issn.1000-6613.2021-0939