A device and method for fluidized deacidification catalytic cracking of high-acid crude oil

A high-acid crude oil, catalytic cracking technology, used in the petroleum industry, processing hydrocarbon oil, etc., can solve the problems of large activity drop, loss of straight-run diesel fraction, no special requirements, etc., to reduce rapid deactivation, strengthen catalytic cracking, The effect of increasing conversion rates

Active Publication Date: 2016-05-25
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese Patent Application Publication No. CN1990829A discloses a method for pretreatment of high-acid crude oil by using a catalyst to remove naphthenic acid in crude oil, but the crude oil after deacidification needs to be processed conventionally, which complicates the processing technology
[0006] Chinese Patent Application Publication No. CN1827744A discloses a method for directly processing high-acid crude oil using traditional riser catalytic cracking technology. At 200°C, it directly enters the bottom of the riser and reacts with the high-temperature regenerated catalyst. However, the traditional catalytic cracking riser is too long, and at the same time, the high-acid crude oil directly contacts the high-temperature regenerant, resulting in excessive cracking of the middle distillate and loss of good quality. Straight-run diesel fraction, affecting product distribution
Although this method can avoid direct contact between high-acid crude oil and high-temperature regenerant, it will reduce the processing capacity of high-acid crude oil, and the activity of the catalyst will decrease greatly after contacting with ordinary catalytic cracking raw materials, which will cause a decline in the conversion effect of high-acid crude oil

Method used

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  • A device and method for fluidized deacidification catalytic cracking of high-acid crude oil
  • A device and method for fluidized deacidification catalytic cracking of high-acid crude oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] In the following examples, the above-mentioned device and method of the present invention are used to perform deacidification and catalytic cracking of high-acid crude oil.

[0052] Example 1 uses Sudandar high-acid crude oil as raw material, and LVR-60R balancer as catalyst. Dargao acid crude oil enters the first riser reactor to react with the raw catalyst for deacidification and carbon removal. The reaction temperature is 480°C, the carbon content of the raw catalyst is 1.43wt%, and the temperature is 530°C. After separation, the liquid products after the reaction are separated into gasoline and diesel oil, and the fraction above 350°C (heavy oil) enters the second riser reactor to react with the catalyst from the catalyst regenerator, the reaction temperature is 530°C, and the carbon content of the regenerant is 0.06wt %.

[0053] See Table 1 and Table 2 for the properties of the raw material high-acid crude oil and the catalyst in this example. See Table 3 for ot...

Embodiment 2

[0062] In the following examples, the above-mentioned device and method of the present invention are used to perform deacidification and catalytic cracking of high-acid crude oil.

[0063] In this example, Sudandar high-acid crude oil is used as the raw material, and the LVR-60R balancer is used as the catalyst. Dargao acid crude oil enters the first riser reactor to react with the raw catalyst for deacidification and carbon removal. The reaction temperature is 480°C, and the carbon content of the raw catalyst is 1.25wt%. After separation, the liquid products after the reaction are separated into gasoline and diesel oil, and the fraction above 350°C (heavy oil) enters the second riser reactor to react with the catalyst from the catalyst regenerator. The reaction temperature is 560°C, and the carbon content of the regenerated catalyst is 0.06wt %.

[0064] See Table 1 and Table 2 for the properties of the raw material high-acid crude oil and the catalyst in this example.

Embodiment 3

[0066] In the following examples, the above-mentioned device and method of the present invention are used to perform deacidification and catalytic cracking of high-acid crude oil.

[0067] In this example, Sudandar high-acid crude oil is used as the raw material, and the LVR-60R balancer is used as the catalyst. Dargao acid crude oil enters the first riser reactor to react with the raw catalyst for deacidification and carbon removal. The reaction temperature is 430°C, and the carbon content of the raw catalyst is 1.43wt%. After separation, the liquid products after the reaction are separated into gasoline and diesel oil, and the fraction above 350°C (heavy oil) enters the second riser reactor to react with the catalyst from the catalyst regenerator. The reaction temperature is 550°C, and the carbon content of the regenerated catalyst is 0.06wt %.

[0068] See Table 1 and Table 2 for the properties of the raw material high-acid crude oil and the catalyst in this example.

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Abstract

The invention discloses a device for carrying out fluidization deacidification and catalytic cracking onto high-acid crude oil. The device comprises a first riser reactor for carrying out deacidification onto the high-acid crude oil, a second riser reactor for carrying out catalytic cracking, a settler, a heat exchanger and a catalyst regenerator, wherein the upper end of the first riser reactor is connected with the settler; the upper end of the second riser reactor is connected with the settler; the catalyst regenerator and the second riser reactor are connected by virtue of a pipeline I; the settler and the first riser reactor are connected by virtue of a pipeline II; the heat exchanger is arranged on the pipeline II and used for carrying out heat exchange onto a to-be-regenerated catalyst and a high-temperature regenerated catalyst. The device can be used for realizing catalytic deacidification, carbon residue removal and heavy component catalytic cracking of the high-acid crude oil, and also can avoid the loss of light components. By adopting the two riser reactors, two cycles are formed respectively, wherein one cycle is used for the deacidification and the carbon residue removal of the high-acid crude oil, and the other cycle is used for cracking of heavy components, so that the yield of liquid, light oil and the like is increased.

Description

technical field [0001] The invention relates to a device and method for catalytic cracking of high-acid crude oil, in particular to a device and method for fluidized deacidification and catalytic cracking of high-acid crude oil. Background technique [0002] With the continuous consumption of petroleum resources, crude oil becomes heavier and inferior, and the production of high-acid crude oil with an acid value greater than 1.0 mgKOH / g continues to increase. In addition to high acid value, high-acid crude oil also has the characteristics of high density, high viscosity, high carbon residue, high metal content, and low light component content. Processing high-acid crude oil by conventional processing technology is likely to cause acid corrosion of equipment. Moreover, the light oil yield and the vacuum extraction rate are low, and the product quality of light oil and wax oil is poor. [0003] In order to reduce the impact of high-acid crude oil corrosion, refineries general...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G55/00
Inventor 刘熠斌蔡银锁杨朝合李春义山红红
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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