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Catalytic cracking oil slurry treatment method and system thereof

A catalytic cracking oil slurry and catalytic cracking technology, which is applied in the direction of hydrocarbon oil treatment products, hydrocarbon oil treatment, hydrotreating process, etc., can solve the problems of difficult treatment of catalytic cracking oil slurry, and achieve the goal of prolonging the operation period and reducing the deposition rate Effect

Active Publication Date: 2021-02-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The technical problem to be solved by the present invention is the difficult problem of catalytic cracking oil slurry in the prior art, and a method and system for efficiently utilizing catalytic cracking oil slurry are provided

Method used

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  • Catalytic cracking oil slurry treatment method and system thereof
  • Catalytic cracking oil slurry treatment method and system thereof
  • Catalytic cracking oil slurry treatment method and system thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-4

[0053] The catalytic cracking oil slurry and the hydrogen-containing gas enter the hydrogenation reaction zone of the hydroprocessing unit together. A fixed bed reactor is set in the hydrogenation reaction zone. In the presence of hydrogen, the catalytic cracking oil slurry and the catalyst in the fixed bed reactor The reaction is carried out by contact, and the reaction effluent enters the gas-liquid separation zone for separation to obtain hydrogen-rich gas and liquid phase stream. The catalyst loading gradation scheme in the hydrogenation reaction zone is shown in Table 2, the hydrogenation process conditions are shown in Table 3, and the properties of the catalytic cracking oil slurry and liquid stream are shown in Table 4. It can be seen from Table 4 that in the hydrogenation reaction zone of the catalytic cracking oil slurry, most of the sulfur is removed and the hydrogen content is appropriately increased, which obviously improves the properties of the catalytic cracking...

Embodiment 5

[0055] The catalytic cracking oil slurry and the hydrogen-containing gas enter the hydrogenation reaction zone of the hydroprocessing unit together, and two fixed-bed reactors connected in series are arranged in the hydrogenation reaction zone. In the presence of hydrogen, the catalytic cracking oil slurry is sequentially contacted with the catalysts in two fixed-bed reactors for reaction, and the reaction effluent enters the gas-liquid separation zone for separation to obtain hydrogen-rich gas and liquid phase stream. The catalyst loading gradation scheme in the hydrogenation reaction zone is shown in Table 2, the hydrogenation process conditions are shown in Table 3, and the properties of the catalytic cracking oil slurry and liquid stream are shown in Table 5. This embodiment carried out a stability test of 6000h. When the hydrotreating unit started to operate, the pressure drop of R-1 was 0.10MPa, and the pressure drop of R-2 was 0.12MPa. After the hydrotreating unit operat...

Embodiment 6

[0059]The catalytic cracking oil slurry and the hydrogen-containing gas enter the hydrogenation reaction zone of the hydroprocessing unit together, and two fixed-bed reactors connected in series are arranged in the hydrogenation reaction zone. In the presence of hydrogen, the catalytic cracking oil slurry is sequentially contacted with the catalysts in two fixed-bed reactors for reaction, and the reaction effluent enters the gas-liquid separation zone for separation to obtain hydrogen-rich gas and liquid phase stream. The catalyst loading gradation scheme in the hydrogenation reaction zone is shown in Table 2, the hydrogenation process conditions are shown in Table 3, and the properties of the catalytic cracking oil slurry and liquid stream are shown in Table 5. This embodiment carried out a stability test of 6000h. When the device started to operate, the pressure drop of R-1 was 0.09MPa, and the pressure drop of R-2 was 0.12MPa. -2 The pressure drop is 0.13MPa.

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Abstract

The present invention relates to a catalytic cracking oil slurry treatment method and a system thereof. The method comprises steps: enabling the catalytic cracking oil slurry and optional catalytic cracking recycle oil to enter a hydrotreating unit to contact with a catalyst in a hydrogenation reaction zone to react, and enabling a reaction effluent to enter a gas-liquid separation zone to be separated to obtain a hydrogen-rich gas and a liquid phase material flow, enabling the liquid-phase material flow and a catalytic cracking raw material to enter a riser reactor of a catalytic cracking unit together to be in contact with a catalytic cracking catalyst for reaction, and separating a reaction effluent to obtain catalytic cracking dry gas, liquefied gas, catalytic cracking gasoline, catalytic cracking diesel oil, catalytic cracking recycle oil and catalytic cracking oil slurry, and returning the catalytic cracking oil slurry to the hydrogenation reaction zone for reaction. According tothe invention, the operation period of the hydrotreating unit is prolonged, and the light oil yield of the catalytic cracking unit is improved.

Description

technical field [0001] The invention relates to a treatment method and system for catalytic cracking oil slurry. Background technique [0002] Oil products containing solid particles such as FCC re-refining oil and FCC oil slurry are low-value-added products of FCC, with relatively high sulfur content, high content of polycyclic aromatic hydrocarbons and colloids. Hard to crack, easy to coke. Therefore, the catalytic cracking unit needs to throw out part of the oil slurry, and the solid particle content in the oil slurry is also relatively high (above 2g / L). In the prior art, the solid particles in the catalytic cracking oil slurry are removed first, and then the catalytic cracking oil slurry from which the solid particles are removed is reprocessed and utilized. [0003] The existing methods for removing solid particles from catalytic cracking oil slurry mainly include the following methods, each of which has its advantages and disadvantages: [0004] 1. Natural sediment...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G69/04
CPCC10G69/04C10G2400/02C10G2400/04C10G2400/26C10G2300/70C10G2300/202
Inventor 邵志才邓中活施瑢戴立顺刘涛聂鑫鹏任亮杨清河胡大为孙淑玲韩伟
Owner CHINA PETROLEUM & CHEM CORP
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