A kind of absorbing and stabilizing process method

A process method and absorption stabilization technology, which are applied in the petroleum industry, gas mixture processing, hydrocarbon oil treatment, etc., can solve the problems of ineffectiveness, reduce the amount of stabilized gasoline supplements, etc., reduce the load of the absorption tower, and achieve reliable product quality. , the effect of improving the absorption rate

Active Publication Date: 2019-05-21
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

For the 10-15 theoretical plates of the conventional absorption tower, the effect is not great, and the reduction of the amount of stabilized gasoline extender is also limited.

Method used

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  • A kind of absorbing and stabilizing process method
  • A kind of absorbing and stabilizing process method
  • A kind of absorbing and stabilizing process method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Taking the absorption stabilization unit of the 3 million tons / year coking unit as an example, the process simulation software ProⅡ is used for simulation analysis.

[0034] The simulation flow is consistent with the process flow of the present invention. From the oil gas at the top of the coking fractionation tower, the rich gas 2 and naphtha 3 are separated in the gas-liquid separation tank 1 at the top of the tower. The rich gas 2 is boosted by the rich gas compressor 4 and mixed with a part of the absorption tower bottom oil 10 from the absorption tower 7 to cool down and enter the rich gas balance tank 5 . The gas phase 6 balanced by the rich gas balance tank 5 enters the bottom of the absorption tower 7; the liquid phase enters the upper part of the desorption tower 8 after being heated by the liquid phase heater 21 of the rich gas balance tank. The desorption gas 9 desorbed by the desorption tower 8 is mixed with part of the absorption tower bottom oil 10 of the...

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Abstract

The invention discloses a novel absorption-stabilization process. On the basis of a current process, a desorption gas balance tank is arranged above a desorption tower, so a mixture of desorption gases at the top part of the desorption tower and partial oil at the bottom part of an absorption tower is cooled and enters the desorption gas balance tank, proper pressurization is performed on a gas phase in the balance tank and the pressurized gas is sent to the bottom part of the absorption tower, and a liquid phase in the balance tank is sent to the top part of the desorption tower. According to the invention, the operation pressure of the desorption tower is properly improved, and the special desorption gas balance tank is arranged, so that the absorption-stabilization process is optimized, and double effects that the energy consumption in an absorption-stabilization process is reduced and the yield of liquefied petroleum gas is improved are realized.

Description

technical field [0001] The invention belongs to the technical field of petrochemical industry and relates to an absorption stabilization process method. technical background [0002] The absorption-stabilization process is an important unit component in the coking / catalysis process of the refinery. It mainly uses the method of absorption and rectification to separate the rich gas and crude gasoline from the oil-gas separation tank at the top of the coking / catalytic fractionation tower into dry gas, liquefied gas and stable gasoline with qualified vapor pressure. There are "single tower" and "double tower" processes. The single tower process is that the absorption and desorption are carried out in the same tower, the absorption rate and desorption rate are poor, and the product quality is not good. The double-tower process means that the absorption and desorption are carried out in two towers respectively, and it has become the dominant process for the absorption stability ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G70/04C10G70/06
CPCC10G70/04C10G70/06
Inventor 张龙陈建兵薄德臣张英孟凡忠
Owner CHINA PETROLEUM & CHEM CORP
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