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Coke tower vent gas recycling method

A technology for releasing air and coke tower, applied in the field of coking, can solve problems such as environmental pollution and damage to the atmosphere, and achieve the effects of high calorific value, ensuring combustion efficiency and increasing gas density

Inactive Publication Date: 2021-11-16
SHANDONG QINGYISHAN PETROCHEM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a method for recycling the air released from the coke tower, which solves the problem that the gas contains H2S and other acidic components, which will cause environmental pollution and destroy the atmosphere after being burned and directly discharged.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A coke tower release air recycling method is characterized in that: comprising the following steps:

[0027] Step 1, after the reaction of the coke tower is completed, the vented air is passed into the vent tower, and the vent tower separates the vented air into gas and liquid;

[0028] Step 2, the separated liquid enters the oil recovery tank, and the separated gas enters the water washing tower;

[0029] Step 3, the gas entering the water washing tower is washed by the water washing tower to remove hydrogen sulfide and some impurities;

[0030] Step 4, the washed gas is passed into the fractionation tower, and the water droplets entrained in the gas are removed and then passed into the gas compressor;

[0031] Step 5: After the pressure is raised by the gas compressor, it enters the fuel gas pipeline network to provide gas for the production equipment.

[0032] Further, Step 1 is specifically: after the reaction of the coke tower is completed, the vented air is pass...

Embodiment 2

[0037] A coke tower release air recycling method is characterized in that: comprising the following steps:

[0038] Step 1, after the reaction of the coke tower is completed, the vented air is passed into the vent tower, and the vent tower separates the vented air into gas and liquid;

[0039] Step 2, the separated liquid enters the oil recovery tank, and the separated gas enters the water washing tower;

[0040] Step 3, the gas entering the water washing tower is washed by the water washing tower to remove hydrogen sulfide and some impurities;

[0041] Step 4, the washed gas is passed into the fractionation tower, and the water droplets entrained in the gas are removed and then passed into the gas compressor;

[0042] Step 5: After the pressure is raised by the gas compressor, it enters the fuel gas pipeline network to provide gas for the production equipment.

[0043] Further, Step 1 is specifically: after the reaction of the coke tower is completed, the vented air is pass...

Embodiment 3

[0048] A coke tower release air recycling method is characterized in that: comprising the following steps:

[0049] Step 1, after the reaction of the coke tower is completed, the vented air is passed into the vent tower, and the vent tower separates the vented air into gas and liquid;

[0050] Step 2, the separated liquid enters the oil recovery tank, and the separated gas enters the water washing tower;

[0051] Step 3, the gas entering the water washing tower is washed by the water washing tower to remove hydrogen sulfide and some impurities;

[0052] Step 4, the washed gas is passed into the fractionation tower, and the water droplets entrained in the gas are removed and then passed into the gas compressor;

[0053] Step 5: After the pressure is raised by the gas compressor, it enters the fuel gas pipeline network to provide gas for the production equipment.

[0054] Further, Step 1 is specifically: after the reaction of the coke tower is completed, the vented air is pass...

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PUM

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Abstract

The invention belongs to the technical field of coking, and discloses a coke tower vent gas recycling method, which comprises the following steps that 1, after reaction of a coke tower is finished, vent gas is introduced into an emptying tower, and the emptying tower performs gas-liquid separation on the vent gas; 2, the separated liquid enters an oil liquid recovery tank, and the separated gas enters a water washing tower; 3, the gas entering the water washing tower is subjected to water washing by using the water washing tower to remove hydrogen sulfide and part of impurities; and 4, the washed gas is introduced into a fractionating tower to remove water drops entrained in the gas, and then the gas is introduced into a gas compressor. According to the coke tower vent gas recycling method, the vent gas is recycled, the coke tower vent gas has the advantages of being high in heat value, large in flow and the like, is stable in pressure, and can be easily merged into a fuel gas pipe network, and after the vent gas is recycled, enough fuel gas amount can be provided for the fuel gas pipe network, so that the use amount of liquefied gas of the fuel gas pipe network is reduced, and the purposes of saving energy, reducing consumption, improving quality and improving efficiency are achieved.

Description

technical field [0001] The invention relates to the technical field of coking, in particular to a method for recycling and utilizing air released from a coke tower. Background technique [0002] Delayed coking is the main method of processing low-quality heavy oil in refineries. As a continuous production and intermittent operation process, there are generally at least two coke towers. When one coke tower is on-line coke, the other coke tower is used for decoking. Related operations, the two coke towers alternately carry out coke production and decoking operations, and the coke tower for decoking needs to go through small steam blowing, large steam blowing, small water supply, large water supply, coke soaking, water release, top opening, coke mouth drilling, and bottom opening Coke unloading port, hydraulic coke cutting, steam catching air, steam pressure test, steam exhaust dehydration, oil and gas preheating and other steps. [0003] Among them, in the cold coking process...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L3/10
CPCC10L3/101C10L3/106C10L3/103C10L2290/46C10L2290/545C10L2290/543
Inventor 马宏基张振伟刘东良王志保
Owner SHANDONG QINGYISHAN PETROCHEM TECH CO LTD
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