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Delayed coking apparatus and method for processing catalytic oil slurry

A technology of delayed coking and catalytic oil slurry, applied in the field of delayed coking process, can solve the problems of increasing economic benefits, easy abrasion of machines and pumps, incapability of long-term operation, etc., and achieves the effect of high operational flexibility and extended operation cycle.

Active Publication Date: 2019-06-25
CNOOC HUIZHOU PETROCHEM CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a delayed coking device and a method for processing catalytic oil slurry in order to overcome the problems in the prior art that the delayed coking device is easy to coke, the pump is easy to wear, and cannot run for a long period of time. The pulp preheating unit is easy to clean and repair, which can increase economic benefits

Method used

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  • Delayed coking apparatus and method for processing catalytic oil slurry
  • Delayed coking apparatus and method for processing catalytic oil slurry
  • Delayed coking apparatus and method for processing catalytic oil slurry

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Embodiment 1

[0067] (A) The external catalytic oil slurry raw material is first sent to the catalytic oil slurry buffer tank 21, and the catalytic oil slurry raw material in the catalytic oil slurry buffer tank 21 is transported to the oil slurry heating furnace 23 through the oil slurry pump 22, and is passed through the oil slurry flow control The valve 24 controls the flow rate to be 30-32t / h, and the catalytic oil slurry with a stable flow rate enters the convection chamber 232 of the oil slurry heating furnace 23 to be heated, and injects a steam (390°C, 3.5MPa, steam Flow control is 500kg / h), thereby improves the flow velocity of the oil slurry that convection chamber 232 comes out; Coking speed, inject a stream of water vapor (390°C, 3.5MPa, steam flow rate is 400kg / h at the penultimate sixth row of radiant tubes in the radiation chamber 233 through the second steam injection hole 235, after calculation: the penultimate row The temperature of the oil slurry at the radiant tube is th...

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Abstract

The invention relates to the field of delayed coking processes in petrochemical industry, and discloses a delayed coking apparatus and a method for processing a catalytic oil slurry. The apparatus comprises a residue oil pre-heating unit (1), an oil slurry pre-heating unit (2), a coke tower (3), a fractionation tower (4) and a product collecting system (5), wherein the residue oil pre-heating unit(1) is used for pre-heating a residue oil raw material, the oil slurry pre-heating unit (2) is used for pre-heating a catalytic oil slurry raw material, the coke tower (3) is connected to the residueoil pre-heating unit (1) and the oil slurry pre-heating unit (2), and is used for heating and reacting the residue oil raw material and the catalytic oil slurry raw material, the fractionation tower(4) is connected to the coke tower (3), and is used for separating the reaction product, and the product collecting system (5) is connected to the fractionation tower (4), and is used for collecting the reaction product. According to the present invention, the apparatus can operate for a long period, the oil slurry pre-heating unit is easy to clear and repair, and the economic benefits can be increased.

Description

technical field [0001] The invention relates to the field of delayed coking technology in the petrochemical industry, in particular to a delayed coking device and a method for processing catalytic oil slurry. Background technique [0002] Catalytic oil slurry is the heavy component at the bottom of the column obtained after the reaction product of the catalytic cracking unit is separated in the fractionation tower. Its properties and characteristics are usually: high density, low viscosity, low carbon residue value, high content of polycyclic aromatic hydrocarbons, low content of asphaltene, Contains a certain amount of catalyst particles. Therefore, the treatment of catalytic oil slurry is a difficult problem faced by various refineries. [0003] At present, there are two mainstream treatment methods for catalytic oil slurry in refineries, one is used as fuel oil for self-use or sold outside, and the other is sent to delayed coking unit for mixed processing with residual o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B55/00
Inventor 徐占武李出和党建军王庆波花飞丁书文龚朝兵邓诗铅陈泳健王福兵
Owner CNOOC HUIZHOU PETROCHEM CO LTD
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