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Separation system and method for hydrogenation reaction effluent

A technology of hydrogenation reaction and effluent, which is applied in the petroleum industry and the treatment of hydrocarbon oil, etc., can solve the problems of increasing costs, and achieve the effect of reducing load, reducing costs, and lasting functionality

Active Publication Date: 2017-11-10
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the prior art, a stripper is used to remove hydrogen sulfide in liquid-phase hydrocarbon oil. In addition to the stripper, a large number of supporting equipment are required, such as tower top air cooler, aftercooler, reflux tank, reflux pump, and tower bottom pump. etc., greatly increasing the cost

Method used

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  • Separation system and method for hydrogenation reaction effluent

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] This embodiment provides a separation system for hydrogenation reaction effluent, including: hot high-pressure separator 1, cold high-pressure separator 2, hot low-pressure separator 3, cold low-pressure separator 4, fractionation tower 5, steam system 6, The first heat exchanger 7, the first air cooler 8, the second heat exchanger 9, the second air cooler 10 and pipelines.

[0078] Wherein, the inlet of hot high-pressure separator 1 is connected with hydrogenation reaction effluent pipeline; The gas phase outlet of hot high-pressure separator 1 is connected with the inlet of cold high-pressure separator 2 through pipeline; The first liquid phase outlet of cold high-pressure separator 2 and The second liquid phase outlet is respectively connected with the first liquid phase inlet and the second liquid phase inlet of the cold low-pressure separator 4 through pipelines.

[0079]The liquid phase outlet of the hot high-pressure separator 1 is connected with the first inlet ...

Embodiment 2

[0084] In this embodiment, the system provided in Example 1 is used to separate the hydrogenation reaction effluent, including: the hydrogenation reaction effluent enters the hot high-pressure separator 1 from the hydrogenation reaction effluent pipeline for separation to obtain the first gas phase product and liquid Phase hydrocarbon oil.

[0085] The first gas phase product flows out of the gas phase outlet of the hot high-pressure separator 1 and enters the pipeline, and enters the cold high-pressure separator 2 after water injection in the pipeline for separation to obtain circulating hydrogen, liquid phase products and first oil phase products , the circulating hydrogen flows out from the gas phase outlet of the cold high-pressure separator 2 and enters the circulating hydrogen system.

[0086] The liquid-phase hydrocarbon oil enters the hot low-pressure separator 3, and at the same time, the steam (at a temperature of 250°C) from the steam system 6 also enters the hot-lo...

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Abstract

The invention discloses a low-cost hydrogenation reaction effluent separation system, which belongs to the field of petrochemical industry. The system includes a hot high-pressure separator, a cold high-pressure separator, a hot low-pressure separator, a cold low-pressure separator, a fractionation column, a steam system and pipelines; the inlet of the hot high-pressure separator is connected with the hydrogenation reaction effluent pipeline, and its gas phase outlet is connected with the hydrogenation reaction effluent pipeline. The inlet of the cold high-pressure separator is connected, and its liquid phase outlet is connected with the first inlet of the hot low-pressure separator; the first liquid phase outlet and the second liquid phase outlet of the cold high-pressure separator are connected with the first liquid phase inlet of the cold low-pressure separator It is connected with the second liquid phase inlet; the vapor system is connected with the second inlet of the hot low pressure separator located below the first inlet; the gas phase outlet of the hot low pressure separator is connected with the first liquid phase inlet of the cold low pressure separator, and its liquid phase outlet It is connected with the inlet of the fractionation tower; between the first inlet and the second inlet of the hot low-pressure separator, a packing layer and an adsorbent layer filled with hydrogen sulfide adsorbent are arranged from top to bottom.

Description

technical field [0001] The invention relates to the field of petrochemical industry, in particular to a separation system and method for hydrogenation reaction effluent. Background technique [0002] With the continuous exploitation of crude oil, there are more and more impurities such as sulfur and nitrogen contained in it, resulting in its quality getting worse and worse. In order to improve the quality of the extracted oil, it is usually treated by hydrogenation reaction (ie hydrodesulfurization reaction), such as gasoline hydrodesulfurization, diesel hydrodesulfurization, wax oil hydrodesulfurization and residual oil hydrodesulfurization, etc. The hydrogenation reaction effluent obtained after the hydrogenation reaction treatment includes most of the hydrocarbon oil, a small amount of hydrogen, hydrogen sulfide, ammonia and other impurities, and most of these hydrogen sulfide enter the circulating hydrogen system with the hydrogen, and a small part Then it enters the fr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G53/00
Inventor 刘瑞萍王国旗聂程辛若凯赵秀文李铁森孙嫚王佩瑜董佳鑫
Owner BC P INC CHINA NAT PETROLEUM CORP