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Demetalization resurrection method of waste catalytic cracking catalyst

A catalytic cracking and demetallization technology, applied in catalyst regeneration/reactivation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of limited application, high cost of revival, and complex process.

Active Publication Date: 2020-01-31
CHINA PETROLEUM & CHEM CORP +1
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  • Description
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Problems solved by technology

[0003] At present, the methods of demetallization and revival of spent catalytic cracking catalysts reported at home and abroad mainly include pickling, carbonylation-chlorination, sulfuration-oxidation, and magnetic separation. These revival methods are usually complex in process and high in revival costs. greatly limit its application

Method used

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  • Demetalization resurrection method of waste catalytic cracking catalyst

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Experimental program
Comparison scheme
Effect test

Embodiment 1-9、 comparative example 1-2

[0046] (1) 10g spent catalytic cracking catalyst is put into crucible, according to the condition shown in table 1, roast in microwave muffle furnace;

[0047] (2) Put the product of step (1) into the container, and carry out ultrasonic and microwave treatment successively according to the conditions shown in Table 1;

[0048] (3) Cool the product of step (2) to room temperature, suction filter, wash with deionized water to neutrality (pH=7), and dry in a blast drying oven according to the conditions shown in Table 1 to obtain revived catalytic cracking catalyst.

[0049] (4) The Ni removal rate, V removal rate and micro-reaction activity of the revived catalytic cracking catalyst obtained were measured respectively, and the results are shown in Table 2.

[0050]

[0051] Table 2

[0052] Example number Ni removal rate (%) V removal rate (%) Microreactive activity (%) Example 1 69 72 68 Example 2 78 75 70 Example 3 72 80 73 Exam...

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Abstract

The invention relates to the field of waste catalyst treatment, and discloses a demetalization resurrection method of a waste catalytic cracking catalyst. The method comprises the steps: contacting the waste catalytic cracking catalyst with an acid solution, sequentially carrying out ultrasonic treatment and microwave treatment, carrying out solid-liquid separation, washing the solid phase obtained by solid-liquid separation, and drying to obtain the resurrected catalytic cracking catalyst. The method disclosed by the invention is high in metal removal rate, and the obtained resurrected catalyst is high in micro-reactivity and simple and convenient to operate.

Description

technical field [0001] The invention relates to the field of waste catalyst treatment, in particular to a demetallization and revival method for waste catalytic cracking catalysts. Background technique [0002] In recent years, the general heavy and poor quality of crude oil has made residual oil catalytic cracking more and more important in the oil refining industry. The heavy metals in residual oil, such as Fe, Ni and V, contain high levels of harmful substances, which are reacted in the riser of the catalytic cracking unit. The catalyst will be continuously deposited on the surface of the catalyst, which will reduce the activity and selectivity of the catalyst and deactivate it. In order to maintain a high conversion rate and selectivity of the heavy oil catalytic cracking unit, the refinery generally adopts the method of unloading the spent catalytic cracking catalyst and replenishing the fresh agent way. At present, spent catalytic cracking catalyst (FCC catalyst) has ...

Claims

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Application Information

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IPC IPC(8): B01J38/60B01J38/62B01J38/02
CPCB01J38/60B01J38/62B01J38/02
Inventor 杜钰任靖于金海祝平吴虹乐
Owner CHINA PETROLEUM & CHEM CORP
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