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A kind of coke cleaning device and its coke cleaning method

A coke cleaning and injection device technology, which is applied in the petroleum industry, cracking, non-catalytic thermal cracking, etc., can solve the problems of reducing product yield and achieve the effects of reducing coke cleaning cost, increasing yield and reducing labor intensity

Active Publication Date: 2017-02-08
PETROCHINA CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that the existing coke cleaning device in the prior art reduces the product yield, an embodiment of the present invention provides a coke cleaning device and a coke cleaning method thereof

Method used

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  • A kind of coke cleaning device and its coke cleaning method
  • A kind of coke cleaning device and its coke cleaning method
  • A kind of coke cleaning device and its coke cleaning method

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Experimental program
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Effect test

Embodiment 1

[0028] The embodiment of the present invention provides a coke cleaning device, which is suitable for being installed on the reaction oil gas pipeline interface 11 at the top of the coke tower 10, such as figure 1 and figure 2 As shown, the coke cleaning device includes a four-way pipe 1, a quenching oil injection device 2, a shut-off valve 3, a coke cleaning valve 4 and a driving mechanism, and the coke cleaning valve 4 includes a valve body 5, a valve stem 6 located in the valve body 5 and The cylindrical or truncated cylindrical decoking piston 7 located in the valve body 5 has the same axial direction of the valve stem 6 as the length direction of the valve body 5, and the decoking piston 7 is fixed on one end of the valve stem 6, and the other end of the valve stem 6 One end is connected with a driving mechanism capable of driving the valve stem 6 to move along the length direction of the valve body 5 .

[0029] The two relative horizontal nozzles of the four-way pipe 1...

Embodiment 2

[0046] An embodiment of the present invention provides a defocusing method, using the defocusing device provided in Embodiment 1 of the present invention, the method includes:

[0047] Step 100: if figure 1 and image 3 As shown, when the coke tower 10 is in the production condition, the coke cleaning piston 7 is located in the valve body 5 at the top of the shut-off valve 3, the shut-off valve 3 is in a closed state, and the quenching oil injection device 2 is in the direction of the pipeline 9 communicating with the fractionation tower The quenching oil is injected, and the quenching oil is discharged along the pipeline 9. The reaction oil and gas at the reaction oil and gas pipeline is in a high temperature state, and coke is generated between the four-way pipe 1 and the top of the coke tower 10 and attached to the inner wall.

[0048] Step 200: if figure 2 and image 3 As shown, when the coke drum 10 is in the coke cleaning condition, the shut-off valve 3 and the drive...

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Abstract

The invention discloses a coke cleaning device and a coke cleaning method and belongs to the field of oil refining. The coke cleaning device comprises a shutoff valve and a coke cleaning valve, wherein the coke cleaning valve comprises a valve body, a valve lever, a coke cleaning piston and a driving mechanism, the axial direction of the valve lever is the same as the length direction of the valve body, the coke cleaning piston is fixed at one end of the valve lever, and the other end of the valve lever is connected with the driving mechanism which can drive the valve lever to move along the length direction of the valve body; and other two pipe orifices of a four-way pipe communicate with a reaction oil-gas pipeline interface at the top of a coking tower and a first passage opening of the shutoff valve, and a second passage opening of the shutoff valve communicates with the valve body of the coke cleaning valve. According to the coke cleaning method, the coke cleaning device is adopted. According to the coke cleaning device, quenching oil is prevented from flowing into the coking tower, the interior reaction temperature of the coking tower cannot be lowered, the depth of reaction is increased, then, the yield of product is increased, the reaction is more thorough, and meanwhile, reaction oil gas can smoothly pass through a reaction oil-gas pipeline through coke cleaning operation.

Description

technical field [0001] The invention relates to the field of petroleum refining, in particular to a coke cleaning device and a coke cleaning method thereof. Background technique [0002] The delayed coking process uses a heating furnace to heat the reaction materials to a reaction temperature of 490°C to 510°C, and then transports the reaction materials to the coke tower for reaction. The reaction materials undergo cracking and condensation reactions in the coke tower to generate reaction oil gas and coke. The generated reaction oil gas enters the fractionation tower through the reaction oil gas pipeline at the top of the coke tower, and the products are fractionated out through the fractionation tower. Since the temperature of the reaction material in the coke tower is relatively high, usually 450-500°C, the reaction material continues to react to form coke during the rising process of the reaction oil gas, and these coke may be attached to the pipe wall of the reaction oil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G9/16
Inventor 范海玲岳昭李芹颜峰
Owner PETROCHINA CO LTD