A recovery device and recovery method for catalytic cracking catalyst fine powder

A catalytic cracking and recovery device technology, applied in physical/chemical process catalysts, chemical instruments and methods, catalyst regeneration/reactivation, etc., can solve problems such as air pollution, waste of energy, etc., to reduce procurement costs and avoid environmental pollution , the effect of controlling the severity of the reaction

Active Publication Date: 2019-09-27
SINOPEC YANGZI PETROCHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to solve the defects of the prior art such as catalyst fine powder emptying the environment, wasting energy, etc., the present invention provides a recovery device and recovery method for catalytic cracking catalyst fine powder

Method used

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  • A recovery device and recovery method for catalytic cracking catalyst fine powder
  • A recovery device and recovery method for catalytic cracking catalyst fine powder
  • A recovery device and recovery method for catalytic cracking catalyst fine powder

Examples

Experimental program
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Effect test

Embodiment 1

[0045] Such as figure 2 As shown, the recovery device of catalytic cracking catalyst fine powder includes: catalyst fine powder collector, first acid container, second acid container, fine powder grinder, double rubber beater, spray dryer, iron impurity filter and removal Iron soaking liquid pH adjustment tank; wherein, the catalyst fine powder collector, the first acid container, the second acid container, the fine powder grinder, the double glue beater and the spray dryer are sequentially connected; the second acid container, iron removal soaking liquid The pH adjustment tank, the iron impurity filter and the second acid container are connected in circulation in sequence.

[0046] Such as figure 1 Shown: The FCC catalyst enters from the reactor inlet 5, and after passing through the reactor 1 of the FCC device, it changes from gray to black, flows through the pipeline from the reactor outlet 6, and enters the FCC catalyst regeneration tower (device) from the regenerator in...

Embodiment 2

[0050] The apparatus was the same as in Example 1.

[0051] (1) Open the second valve 10, the regenerated catalyst directly returns to the reactor 1, stops the operation of the fine powder collector 3, and samples and collects FCC fine powder less than 20 μm from the catalyst fine powder collector 3.

[0052] (2) Step (1) gained fine powder is dropped into the first acid container 24, and in the container, the hydrochloric acid that volume concentration is 25% submerges the fine powder, continues at stirring speed 60r·min -1 Soak for 4min, filter.

[0053] (3) Put the fine powder after filtering from the first acid container into the second acid container, and there is a sodium oxalate solution with a mass concentration of 5% in the container, stir for 8 min at a rotating speed of 60 r / min, then leave standstill for 7 min, filter, After soaking in the first and second acid containers, heavy metal FCC poisoning elements such as Ni, V, Fe basically reached the removal target. ...

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Abstract

The invention discloses a recycling device and a recycling method for fine powder of a catalytic cracking catalyst. The recycling device and the recycling method are applicable to a catalytic cracking catalyst with aluminum trioxide and silicon dioxide as supporters in a continuous catalytic cracking device; in the conveying process of the catalyst, 2-5% of fine powder of which the particle size is smaller than 20 [mu]m is generated every day, the fine powder passes through a continuous regeneration device, is further fed into a reactor and is collected by a fine powder collector; after polluted metals are treated, the fine powder is pulped by using a grinding double-adhesive method to generate a fluid catalytic cracking (FCC) catalyst meeting normal particle size distribution, the contents of main polluted metals, namely V, Ni and Fe of the catalyst, are reduced to 0.23% (wt), 0.15% (wt) and 0.18% (wt) respectively, and the recycled catalyst can be mixed and used together with an on-service catalyst or a starting catalyst. The equipment process is simple, the investment is low, the control is simple, a sodium oxalate soaking solution can be repeatedly used, then the environment is protected, and the energy consumption cost is low; the environment pollution problem that the fine powder of the catalytic cracking catalyst is emitted into the air is thoroughly solved.

Description

technical field [0001] The invention relates to a recovery device and recovery method for catalytic cracking catalyst fine powder, belonging to the field of solid waste treatment and application thereof. Background technique [0002] The raw oil of the FCC unit comes from the residual oil hydrogenation unit, and the hydrogenated tail oil of the residual oil enters the raw oil buffer tank. After being boosted by the raw oil pump, the raw oil-circulating oil slurry heat exchanger heats up to about 200°C, and The re-refined oil and re-refined oil slurry from the fractionation part (normal operation does not require re-refining) are mixed, and then enter the lower part of the riser reactor through the feed oil atomization nozzle in multiple channels, and contact with the high-temperature catalyst from the regenerator to complete the temperature rise of the raw material, Vaporization and reaction. [0003] The oil gas and catalyst in the reaction enter the second reaction zone t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J38/60B01J38/62B01J38/72
Inventor 陈红徐永业柴子斌
Owner SINOPEC YANGZI PETROCHEM
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