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Process for reducing energy consumption of absorption and stabilization system in oil refining process

An absorption stabilization system and oil refining process technology, applied in separation methods, dispersed particle separation, chemical instruments and methods, etc., can solve the problems of inability to benefit absorption, reabsorption, desorption and stabilization at the same time, and achieve reduction of the total amount of internal circulation, Effects of better absorption, enhanced absorption and reabsorption process

Active Publication Date: 2022-04-12
SOUTH CHINA UNIV OF TECH
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0005] One of the purposes of the present invention, in order to overcome the problem that the absorption stabilization system of the existing oil refining process cannot be beneficial to the absorption, reabsorption, desorption and stabilization process at the same time, Provides an absorption stabilization system for oil refining process

Method used

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  • Process for reducing energy consumption of absorption and stabilization system in oil refining process
  • Process for reducing energy consumption of absorption and stabilization system in oil refining process
  • Process for reducing energy consumption of absorption and stabilization system in oil refining process

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Embodiment

[0095] This embodiment is a differentiated absorption stabilization system in the refining process and a new pressure swing operation new process, which is an improvement on the original process flow, and its structural diagram is as follows figure 2 shown. (other undescribed processes are all the same as the comparative example, so I won't repeat them here):

[0096] The absorption stabilization system of the refinery process of the embodiment not only includes: rich gas compressor 1, compressed rich gas liquid separation tank 3, condensed oil tank 7, stable tower top circulating water cooler 19, stable tower top reflux tank 20, absorption Tower 10, desorption tower 9, stabilizing tower 17 and reabsorption tower 31; Also include: mixed gas primary booster 33, mixed gas circulating water cooler 34, compressor interstage liquid separation tank 35, mixed gas secondary booster Compressor 36, interstage liquid separation oil pump 37, condensed oil throttle valve 38 and low-tempe...

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Abstract

The invention discloses a process for reducing energy consumption of an absorption and stabilization system in an oil refining process. The core content is that the processing amount and the energy consumption of an absorption stabilization system in the whole oil refining process are reduced through differential pressure transformation, namely increasing the pressure of an absorption tower and a re-absorption tower, reducing the pressure of a desorption tower and a stabilization tower and using low-temperature condensed oil after throttling expansion as a refrigerant at the top of the stabilization tower. The invention further discloses an absorption stabilizing system in the oil refining process, and the equipment, the connection mode and the process parameters of the system are ingeniously designed, so that the absorption stabilizing system in the oil refining process has the characteristics that the existing absorption stabilizing system is slightly changed, and the original product quality index can be kept; and the method also has the advantages of energy conservation, grading controllability, greenness, economy, circulation, low production cost and the like, can meet the requirements of actual large-scale production, and is suitable for actual popularization and application.

Description

technical field [0001] The invention belongs to the technical field of petrochemical industry, and in particular relates to a process for reducing energy consumption of an absorption stabilization system in an oil refining process. Background technique [0002] The absorption stabilization unit is the basic process unit in the petroleum processing process, and is widely used in catalytic cracking, delayed coking, hydrocracking, light hydrocarbon recovery and other refining units. The absorption and stabilization system in the refining process usually includes key equipment such as rich gas compressor, condensed oil tank, absorption tower, desorption tower, reabsorption tower and stabilization tower, and its function is to extract the rich gas from the main fractionation tower (the main component is C 1 ~C 5 Components) and naphtha are separated into product dry gas (mainly C 1 ~C 2 Components, requirements: ≥C 3 Component molar content ≤ 3%), liquefied petroleum gas (Liq...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/18B01D53/14
Inventor 李国庆郑磊钊马玉杰
Owner SOUTH CHINA UNIV OF TECH
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