SHELL-AND-TUBE HEAT EXCHANGER WITH VARIABLE VAPORLIQUID RATIO FOR NATURAL GAS PROCESSING PLANTS WITH DEEP EXTRACTION OF C2+ HYDROCARBONS

IF 0.3 Q4 ENGINEERING, CHEMICAL

Chemical and Petroleum Engineering Pub Date : 2023-05-30 DOI:10.17122/ngdelo-2023-2-172-180

A. V. Kurochkin, A. Chirkova, A. Usmanova, S. V. Akulov, E.N. Boldyreva

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Abstract

Due to the limited quantitiesand high cost of energy resources, the task of reducing their consumption at existing gas processing plants is crucial. One of the methods to save energy is to optimize the distribution of heat flows at a process unit. The most energy-consuming unit in natural gas processing plants isademethanizer, so the decision to optimize the operation of this unit is practical.To this end, the article discusses the existing options of layout for the stripping section of the unstabilized gas condensatedemethanizer at natural gas processing plants with deep extraction of C2+hydrocarbons.The peculiarities of equipment layout for the stripping section of the demethanizer in all the considered options have been studied in detail. The positive and negative sides of each option have been revealed.A proprietary design is proposed for a shell-and-tube heat exchanger with a phase interface that performs the function of a stripping section for the demethanizer. A comparative analysis of using a horizontal thermosyphon evaporator and a shell-and-tube heat exchanger with a variable vapor-liquid ratio under the same operating conditions is given. As a result, it was revealed that the total weight of equipment and overall dimensions of the steel structure in the first option are greater than in the second one. It is established that the latter solution will simplify the layout of the demethanizer unit and improve the process performance of the plant, providing an advantage over the existing technology solutions. Besides, the design of this equipment makes it possible to use it in gas processing plants with low-temperature processing of natural gas.

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天然气深采c2 +烃类的变汽液比管壳式换热器

由于能源资源的数量有限，成本高，减少现有天然气处理厂的能源消耗的任务至关重要。节约能源的方法之一是优化工艺单元的热流分布。天然气处理厂能耗最大的装置是脱甲烷器，因此对该装置的优化操作决策具有现实意义。为此，本文讨论了天然气深采C2+烃的不稳定气凝脱甲烷塔汽提段的现有布置方案。详细研究了脱甲烷塔汽提段在各方案中的布置特点。每种选择的积极和消极方面都已显露出来。提出了一种具有相界面的壳管式热交换器的专利设计，该相界面具有脱甲烷器汽提段的功能。在相同工况下，对卧式热虹吸蒸发器和变气液比管壳式换热器进行了对比分析。结果表明，第一种方案的设备总重量和钢结构整体尺寸均大于第二种方案。结果表明，后一种解决方案将简化脱甲烷装置的布置，提高装置的工艺性能，比现有的技术解决方案具有优势。此外，该设备的设计使其在天然气低温加工的天然气加工厂中使用成为可能。

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来源期刊

Chemical and Petroleum Engineering ENGINEERING, CHEMICAL-

CiteScore

0.60

自引率

33.30%

发文量

129

期刊介绍： Chemical and Petroleum Engineering publishes the latest research on Russian innovations in the field. Articles discuss developments in machinery and equipment, construction and design, processes, materials and corrosion control, and equipment-manufacturing technology. Chemical and Petroleum Engineering is a translation of the Russian journal Khimicheskoe i Neftegazovoe Mashinostroenie. The Russian Volume Year is published in English from April. All articles are peer-reviewed.