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Anti-vanadium auxiliary agent of heavy oil cracking catalyst or contact agent

A heavy oil cracking and catalyst technology, applied in cracking, catalytic cracking, petroleum industry and other directions, can solve the problems of destroying molecular sieves and adding a large amount of anti-vanadium additives, and achieve the effect of improving anti-vanadium ability, low cost and low loss

Active Publication Date: 2014-12-17
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these anti-vanadium additives have a certain anti-vanadium effect, the disadvantage is that the amount of anti-vanadium additives added is large, generally about 5wt% of the catalyst storage.
This method is limited by the thermal balance and operating conditions of the regenerator, and there must be a certain amount of excess oxygen, so a considerable part of the vanadium in the regenerator is oxidized to +5, and the +5 vanadium migrates to the pores of the molecular sieve, destroying the molecular sieve.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The anti-vanadium additive A is Ge, and the orbit-3000 heavy oil catalytic cracking catalyst (commercial product of China Petroleum & Chemical Co. 2 / g, the same below) Mix the catalyst with the anti-vanadium additive A, and the weight of the anti-vanadium additive A in the mixture is 1% of the weight of the catalyst.

[0025]A small-scale fixed fluidized bed catalytic cracking test was carried out, using 50wt% Tahe residual oil containing 220ppm vanadium and 50wt% kerosene as raw material (see Table 1 for the properties of the raw material oil) and after 20 reaction-regeneration cycles, the equilibrium 9200 ppm vanadium was deposited on the catalyst.

[0026] The fixed fluidized bed reaction conditions are: reaction temperature 500°C, regeneration temperature 700°C, agent-oil ratio 4.0, space velocity 20h -1 , Catalyst loading 150g.

[0027] The evaluation results of the fixed fluidized bed are listed in Table 2. The characterization results of the catalyst after th...

Embodiment 2

[0029] Anti-vanadium additive B is GeO 2 , mix the orbit-3000 heavy oil catalytic cracking catalyst with the anti-vanadium additive B, and the weight of the anti-vanadium additive B in the mixture is 0.2% of the weight of the catalyst.

[0030] A small-scale fixed fluidized bed catalytic cracking test was carried out, using 50wt% Tahe residual oil containing 220ppm vanadium and 50wt% kerosene as raw material (see Table 1 for the properties of the raw material oil) and after 20 reaction-regeneration cycles, the equilibrium 9200 ppm vanadium was deposited on the catalyst.

[0031] The fixed fluidized bed reaction conditions are: reaction temperature 500°C, regeneration temperature 700°C, agent-oil ratio 4.0, space velocity 20h -1 , Catalyst loading 150g.

[0032] The evaluation results of the fixed fluidized bed are listed in Table 2. The characterization results of the catalyst after the test are shown in Table 3.

Embodiment 3

[0034] The anti-vanadium additive C is MnO, the orbit-3000 heavy oil catalytic cracking catalyst is mixed with the anti-vanadium additive C, and the weight of the anti-vanadium additive C in the mixture is 0.7% of the weight of the catalyst.

[0035] A small-scale fixed fluidized bed catalytic cracking test was carried out, using 50wt% Tahe residual oil containing 220ppm vanadium and 50wt% kerosene as raw material (see Table 1 for the properties of the raw material oil) and after 20 reaction-regeneration cycles, the equilibrium 9200 ppm vanadium was deposited on the catalyst.

[0036] The fixed fluidized bed reaction conditions are: reaction temperature 500°C, regeneration temperature 700°C, agent-oil ratio 4.0, space velocity 20h -1 , Catalyst loading 150g.

[0037] The fixed fluidized bed results are listed in Table 2. The characterization results of the catalyst after the test are shown in Table 3.

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Abstract

The invention relates to an anti-vanadium auxiliary agent of a heavy oil cracking catalyst or a contact agent, which is characterized in that the auxiliary agent contains an active component, the active component is subjected to oxidation and reduction cycle processes in a heavy oil cracking apparatus, and exists in an oxidation state after being oxidized, and exists in a reduction state after being reduced, the reduction state of the active component and excess oxygen are contacted under regeneration or gasification temperature and then conversed to the oxidation state, excess oxygen concentration is simultaneously reduced; the oxidation state of the active component as well as one or more of charcoal, CO, hydrogen and hydrocarbons in the heavy oil cracking apparatus are contacted and then conversed to the reduction state; and the existence form of oxidation state and reduction state of the active component under heavy oil cracking apparatus condition is in a solid state.

Description

technical field [0001] The present invention relates to an anti-vanadium additive for a heavy oil cracking catalyst or a contact agent, and further the present invention relates to a heavy oil cracking process using a fluidized bed, such as catalytic cracking, fluidized coking, flexible coking, contact cracking and other heavy oil cracking Anti-vanadium additives for catalysts or contact agents in technological processes. Background technique [0002] With the rapid development of the world economy and the increasing demand for oil, conventional oil reserves are decreasing day by day, and heavy oil, which has huge exploration potential and broad development prospects, has become one of the important energy resources in the 21st century. At present, the crude oil extracted in the world is getting heavier and worse in quality. Although the heavy part of petroleum can be directly used as fuel oil, the demand for heavy fuel oil is less and less. Therefore, the outstanding task...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G11/04
Inventor 汪燮卿谭丽王子军朱玉霞李本高
Owner CHINA PETROLEUM & CHEM CORP
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