Regeneration method after deactivation of carbon disulfide hydrolysis catalyst

A technology for hydrolyzing catalysts and carbon disulfide, which is applied in catalyst regeneration/reactivation, physical/chemical process catalysts, chemical instruments and methods, etc. It can solve problems that have not been reported, and achieve the effects of shortening the process, simple operation, and simple process

Inactive Publication Date: 2012-06-20
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] About CS 2 The regeneration method of hydrolysis catalyst has not yet been reported

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: the regeneration method after this carbon disulfide hydrolysis catalyst deactivation, concrete operations are as follows:

[0016] Wash 100g of deactivated catalyst with distilled water for 3 times, and dry at 100°C for 4h; configure 0.1% sodium carbonate solution, put 100g of deactivated catalyst into 300ml of sodium carbonate solution, at a temperature of 30°C, and an ultrasonic frequency of Under the condition of 28KHz, the impregnation time is 60min, and the impregnated catalyst is dried in an oven at 120°C for 3 hours to obtain the regenerated hydrolysis catalyst.

[0017] Test the activity of the regenerated catalyst obtained in this embodiment, the activity of the catalyst can be obtained by CS 2 expressed as a conversion rate.

[0018] The test reaction was carried out in a Φ4mm×100mm fixed-bed quartz reactor. The regenerated catalyst was screened out with a particle size of 40-60 mesh, and a catalyst with a height of 45mm was filled in the reacto...

Embodiment 2

[0021] Example 2 ： The regeneration method after carbon disulfide hydrolysis catalyst deactivation of the present invention, concrete operation is as follows:

[0022] Wash 100g of deactivated catalyst with distilled water for 4 times, and dry at 110°C for 3.5h; prepare a potassium hydroxide solution with a concentration of 1.6%, put 100g of deactivated catalyst into 350ml of potassium hydroxide solution, at a temperature of 40°C, Under the condition of an ultrasonic frequency of 35KHz, the impregnation lasts for 45 minutes, and the impregnated catalyst is dried in an oven at 110° C. for 3.5 hours to obtain a regenerated hydrolysis catalyst.

[0023] Test the activity of the regenerated catalyst obtained in this embodiment, the activity of the catalyst can be obtained by CS 2 expressed as a conversion rate.

[0024] The test reaction was carried out in a Φ4mm×100mm fixed-bed quartz reactor. The regenerated catalyst was screened out with a particle size of 40-60 mesh, and a 4...

Embodiment 3

[0027] Embodiment 3: the regeneration method after carbon disulfide hydrolysis catalyst deactivation of the present invention, concrete operations are as follows:

[0028] Wash 100g of the deactivated catalyst with distilled water for 4 times and dry at 120°C for 3h; prepare a sodium hydroxide solution with a concentration of 3%, put 100g of the deactivated catalyst into 400ml of sodium hydroxide solution, at a temperature of 35°C, ultrasonic Under the condition of a frequency of 40KHz, the impregnation time is 30min, and the impregnated catalyst is dried in an oven at 100°C for 4 hours to obtain a regenerated hydrolysis catalyst.

[0029] Test the activity of the regenerated catalyst obtained in this embodiment, the activity of the catalyst can be obtained by CS 2 expressed as a conversion rate.

[0030] The test reaction was carried out in a Φ4mm×100mm fixed-bed quartz reactor, the catalyst was sieved to a particle size of 40-60 mesh, and a 45mm-high catalyst was filled in ...

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PUM

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Abstract

The invention discloses a regeneration method after the deactivation of a carbon disulfide hydrolysis catalyst, i.e. a regeneration method after the deactivation of the carbon disulfide hydrolysis catalyst through taking activated carbon as a carrier. The regeneration method comprises the following steps of: washing the deactivated catalyst for 3-4 times with distilled water, drying for 3-4h at a temperature of 100-120 DEG C, then placing into an impregnant for ultrasonic impregnation for 30-60 minutes and finally drying for 3-4h at a temperature of 100-120 DEG C to obtain a regenerated catalyst. The regeneration method has the beneficial effects that the operation is simple, and the impregnation process is easy for operation; moreover, the impregnant is cheap, is easily obtained and easily realizes the industrialization; and the regenerated catalyst is high and is superior to a fresh catalyst in activity and can be widely applied to the removal of carbon disulfide in various gas sources.

Description

technical field [0001] The invention relates to a regeneration method of a deactivated carbon disulfide hydrolysis catalyst, that is, a regeneration method of a deactivated hydrolysis catalyst after a hydrolysis catalyst with an activated carbon base as a carrier catalyzes the hydrolysis of carbon disulfide under low temperature conditions, and belongs to the field of catalyst regeneration. Background technique [0002] In the gas produced from natural gas, coal, petroleum, etc., there will be carbon disulfide (CS 2 ), carbonyl sulfide (COS) and other organic sulfur and hydrogen sulfide (H 2 S) and other inorganic sulfur coexist. with H 2 S compared to CS 2 Its chemical properties are relatively stable, and it is difficult to remove it directly by conventional methods. At present, the most commonly used method is catalytic hydrolysis, which removes CS 2 The principle is that CS 2 React with water vapor in the gas on the catalyst to convert into H 2 S, then H 2 S is r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J38/64B01J38/48B01D53/86B01D53/48
Inventor 易红宏何丹唐晓龙李凯王红妍李芬容赵顺征
Owner KUNMING UNIV OF SCI & TECH
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