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Continuous reaction-generation catalytic conversion system and method

A catalytic conversion method and catalytic conversion technology, applied in chemical instruments and methods, organic chemistry, chemical recovery, etc., can solve problems such as complex structure, unfavorable maintenance, and failure to eliminate catalyst induction period, etc., to achieve the effect of rapid deactivation

Active Publication Date: 2014-10-29
RES INST OF SHAANXI YANCHANG PETROLEUM GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this patent, heat exchange tubes are installed in the reactor and regenerator, the structure is complex, which is not conducive to maintenance, the regenerated catalyst is not carburized, the induction period of the catalyst is not eliminated, and the catalyst entering the reaction zone is not in the best active state

Method used

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  • Continuous reaction-generation catalytic conversion system and method
  • Continuous reaction-generation catalytic conversion system and method
  • Continuous reaction-generation catalytic conversion system and method

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Experimental program
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Effect test

Embodiment 1

[0029] Such as figure 1 As shown, the continuous reaction-regeneration catalytic conversion system of the present invention includes a riser reactor 2 , a settler 3 , a primary regenerator 4 , a secondary regenerator 8 and a preprocessor 10 .

[0030] The height of the riser reactor 2 is greater than the sum of the heights of the settler 3 , the primary regenerator 4 , the secondary regenerator 8 and the tertiary regenerator 10 . The upper end is provided with an export port, the lower end is provided with an import port, and the upper end of the import port is also provided with a raw material import port 1 .

[0031] The top of the settler 3 is provided with a gas outlet, and the bottom is provided with an outlet. The outlet of the riser reactor 2 passes through the outlet of the settler 3 into the settler 3 and extends to the upper part of the settler. In addition, the top of the settler 3 is also provided with a gas outlet. The main function of the settler 3 is to reali...

Embodiment 2

[0036]A continuous reaction-regeneration catalytic conversion method, the reaction raw material flows into the raw material inlet 1 of the riser reactor 2, and then respectively flows into the primary regeneration gas inlet 5 of the primary regenerator 4, and the secondary regenerator The regeneration gas inlet 9 of the third-stage regenerator and the regeneration gas inlet 11 of the third-stage regenerator pass into the corresponding regeneration gas; the diluted oxygen inlet 6 of the first-stage regenerator is fed with diluted oxygen, and light hydrocarbon fuel is added to the light hydrocarbon fuel inlet 7; Fresh catalyst is added to the fresh catalyst inlet 12 of the processor, and the regenerated catalyst and fresh catalyst enter the riser reactor 2 after being pretreated by the preprocessor 10, and form a gas-solid mixed flow with the reaction raw material flow to move upward, while A catalytic reaction occurs. The generated gas enters the settler 3, where the gas-solid ...

Embodiment 3

[0038] A continuous reaction-regeneration catalytic conversion method for the production of aromatics from natural gas by anaerobic aromatization. After the purified natural gas is pressurized, it is respectively mixed with the reaction product gas discharged from the gas outlet at the top of the settler in the system of the present invention, The first-stage regeneration flue gas and the second-stage regeneration flue gas are heat-exchanged, preheated to 500-700°C, enter the riser reactor 2 through the raw material inlet 1, and mix with the 800-1000°C catalyst sent by the preprocessor 10 , forming a high-temperature gas-solid mixed flow, and a catalytic conversion reaction dominated by aromatization occurs, and moves upward at the same time. Moving down in the settler 3, it contacts and reacts with the pretreated gas countercurrently. The generated gas at the top of the settler passes through the three-stage cyclone separator for gas-solid separation, and the generated gas aft...

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Abstract

The invention relates to a common chemical method which is performed in the presence of a fluid and solid particles, and a device used in the method. The continuous reaction-generation catalytic conversion system comprises a pretreater, a riser reactor, a settler and a regenerator which are sequentially connected with one another end to end by pipelines, wherein a riser lead-out hole is formed in the upper part inside the settler; a settler lead-out hole is connected with a regenerator lead-in hole; a regenerator lead-out hole is connected with a pretreater lead-in hole; a pretreater lead-out hole is connected with a riser lead-in hole; a raw material lead-in hole is formed in the riser reactor and the height of the raw material lead-in hole is larger than that of the riser lead-in hole. The method comprises the steps of adding a fresh catalyst into the pretreater, introducing raw materials for reaction into the raw material lead-in hole of the riser reactor, and introducing regenerative gas into the regenerator. The riser reactor is creatively combined with the regenerator of a multistage fluidized bed for catalytic conversion reaction, the problem of rapid inactivation of a catalyst in the catalytic conversion reaction is effectively solved and the continuous reaction and regeneration are achieved.

Description

technical field [0001] The present invention relates to a general chemical process carried out in the presence of fluids and solid particles and to an apparatus for the process. Background technique [0002] Catalytic reactions are the most commonly used conversion methods in the chemical industry, and most industrial reactions are catalytic reactions. The catalytic reaction must have a suitable reaction system and process to match it, so that the reaction can be carried out in the desired direction under the optimal reaction conditions, and more target products can be obtained, otherwise, the economy of the reaction will be affected. Seriously affect, or even lose the industrial application value. [0003] Taking the anaerobic catalytic conversion of methane as an example, the use of methane anaerobic aromatization to produce aromatics is a newly developed aromatics production route in recent years. The huge temptation has been widely concerned and highly valued by the in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J8/26C07C2/76C07C11/04C07C15/04
CPCY02P20/52Y02P20/584
Inventor 杨天华张书勤张娟利韩洁
Owner RES INST OF SHAANXI YANCHANG PETROLEUM GRP