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Delayed coking device capable of reducing sulfur content of petroleum coke and increasing yield of liquid as well as coking method thereof

A delayed coking method and delayed coking technology, applied in the field of delayed coking devices, can solve the problems of poor quality of coking products and low yield of liquid products, etc.

Inactive Publication Date: 2018-12-21
SINOPEC LUOYANG TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still some problems in the existing delayed coking process. The yield of liquid products is not high, and the quality of coking products is not good. How to reduce the coke yield and the sulfur content in petroleum coke is a problem that needs to be solved now

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  • Delayed coking device capable of reducing sulfur content of petroleum coke and increasing yield of liquid as well as coking method thereof

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0037] Refer again to the attached figure 1 The present embodiment provides a delayed coking device 10 for reducing the sulfur content of petroleum coke and increasing the liquid yield, which includes a coking raw material delivery pipe 101, a cavitation cracking reactor 110, a first oil and gas delivery pipe 113, and an ultrasonic reactor 130 , the second oil-gas delivery pipe 131 , the gas-liquid separator 140 , the heating furnace 120 , the coke tower 150 , the fractionation tower 160 and the high-temperature oil-gas delivery pipe 151 .

[0038] In the embodiment of the present invention, a cavitation cracking reactor 110 is introduced into the delayed coking unit 10, so that coking raw materials enter the cavitation reactor, and cavitation occurs in the reactor, accompanied by strong oxidation reactions. Cavitation is a process in which vaporization occurs when the pressure in a liquid drops below the saturated vapor pressure of the liquid at the corresponding temperature....

no. 2 example

[0047] This embodiment provides a delayed coking method for reducing the sulfur content of petroleum coke and increasing the liquid yield, which includes the following steps:

[0048] The coking raw material before the coking reaction is transported to the cavitation cracking reactor 110 for cavitation cracking reaction. In the cavitation cracking reaction, the reaction temperature is 200°C, the coking raw material is cavitated three times, the inlet pressure of the cavitation cracking reactor 110 is maintained at 5.0 MPa, and the coking raw material after cavitation cracking is transported to the heating furnace 120 The convection chamber is heated, and then the heated coking raw material is sent to the ultrasonic reactor 130 for ultrasonic strengthening.

[0049] In ultrasonic strengthening, the temperature of the ultrasonic reactor 130 is 350° C., the reaction time is 40 min, the ultrasonic frequency is 28 KHz, the power is 2000 W, and the pressure is 0.6 MPa.

[0050] The...

no. 3 example

[0056] This embodiment provides a delayed coking method for reducing the sulfur content of petroleum coke and increasing the liquid yield, which is roughly the same as the delayed coking method provided in the second embodiment, except that the parameters are different, and the differences are as follows:

[0057] In the cavitation cracking reaction, the reaction temperature is 200° C., the coking raw material undergoes cavitation treatment for 4 times, and the inlet pressure of the cavitation cracking reactor 110 is maintained at 5.0 MPa.

[0058] In ultrasonic strengthening, the temperature of the ultrasonic reactor 130 is 380° C., the reaction time is 30 minutes, the ultrasonic frequency is 28 KHz, the power is 2000 W, and the pressure is 0.6 MPa.

[0059] The high-temperature material after ultrasonic strengthening is subjected to gas-liquid separation, and the separated gas phase is transported to the fractionation tower 160 for fractionation, and the separated liquid phas...

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Abstract

The invention discloses a delayed coking device capable of reducing sulfur content of petroleum coke and increasing yield of liquid as well as a coking method thereof, and relates to the technical field of petrochemical industry. The device comprises a coking raw material conveying pipe, a cavitation cracking reactor and a first oil and gas conveying pipe; the coking raw material conveying pipe isprovided with a feeding end used for being connected with a raw material tank; a discharging end of the coking raw material conveying pipe is connected with a feeding port of the cavitation crackingreactor; a discharging port of the cavitation cracking reactor is connected with a feeding port of the first oil and gas conveying pipe; and the first oil and gas conveying pipe is provided with a discharging port used for being connected with a convection chamber of a heating furnace. The cavitation cracking reactor can realize breakage of long-chain molecules, colloid and asphaltene in heavy oil, can promote breakage of active groups such as sulfur-containing compounds, namely thiophenic sulfur, enables the sulfur-containing compounds to be enriched into coking gas and coking liquid products, significantly reduces the sulfur content of the petroleum coke, effectively improves the quality of the petroleum coke precuts and increases the yield of liquid products.

Description

technical field [0001] The invention relates to the field of petrochemical technology, in particular to a delayed coking device and a coking method for reducing the sulfur content of petroleum coke and increasing the liquid yield. Background technique [0002] With the increasing trend of heavy and inferior crude oil resources around the world, how to convert heavy oil into light oil with low investment and low operating cost has become an urgent problem to be solved. [0003] At present, the processing of heavy crude oil and residual oil in the world is still dominated by decarburization process and delayed coking process. The delayed coking process has the advantages of strong raw material adaptability and simple process flow, and has become one of the important means for deep processing of heavy oil. . However, there are still some problems in the existing delayed coking process. The yield of liquid products is not high, and the quality of coking products is not good. Ho...

Claims

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Application Information

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IPC IPC(8): C10G55/04
CPCC10G55/04C10G2300/1037C10G2300/202
Inventor 王宝石黄新龙刘丹禾李康雷杰刘淑芳王少锋
Owner SINOPEC LUOYANG TECH CO LTD
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