Normal-temperature dechlorinating agent for organochlorine and preparation method and application thereof

A technology of organic chlorine and dechlorination agent, which is applied in the direction of catalyst activation/preparation, separation methods, chemical instruments and methods, etc., can solve the problems of poor organic chlorine removal effect, achieve enhanced low-temperature adsorption capacity, increase chlorine capacity and dechlorination In addition to the effect of accuracy and time saving

Inactive Publication Date: 2020-02-28
湖北浚然新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problem of poor organic chlorine removal effect of organic chlorine dechlorination agent in the prior art, the present invention provides a normal temperature organic chlorine dechlorination agent, preparation method and application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Step S1: Prepare 20 g of 0.5% sodium hydroxide solution with sodium hydroxide, weigh 3 g of pseudoboehmite, 8 g of sodium bentonite, and 12 g of lambsomite, dry mix the binder uniformly and add to the sodium hydroxide solution Carry out hydration in the medium to obtain a hydration binder;

[0026] Step S2: 110g of basic zinc carbonate, 10g of activated alumina powder, and 15g of sodium carbonate are mixed, then add a hydration binder, and after mixing uniformly, carry out granulation molding by an extruder or a ball rolling machine, and the molded granular catalyst Cured and matured in an incubator at a temperature of 50°C for 12 hours. The cured and matured catalyst was dried in an oven at a drying temperature of 110°C for 3 hours to obtain a dechlorination agent precursor;

[0027] Step S3: Put the dried catalyst in a muffle furnace for calcination at a temperature of 400° C. for 2 hours, and sieve to obtain a dechlorination catalyst.

Embodiment 2

[0029] Step S1: Sodium hydroxide is formulated into 20g of 0.5% sodium hydroxide solution, 2g of pseudoboehmite, 9g of sodium bentonite, 10g of sheepskin, and the binder is dry-mixed and added to the sodium hydroxide solution. 8 hours to obtain the hydration binder;

[0030] Step S2: 100g of basic zinc carbonate, 9g of activated alumina powder, and 15g of sodium bicarbonate are mixed, and then a hydration binder is added. The catalyst was maintained in an incubator at a temperature of 50°C for 12 hours. Dry the cured and matured catalyst in an oven at a drying temperature of 110°C for 3 hours to obtain a dechlorination agent precursor;

[0031] Step S3: Put the dried catalyst in a muffle furnace for calcination at a temperature of 400° C. for 2 hours, and sieve to obtain a dechlorination catalyst.

Embodiment 3

[0033] Step S1: Sodium hydroxide is formulated into 20 g of 1% sodium hydroxide solution, 2 g of pseudoboehmite, 9 g of sodium bentonite, and 10 g of sheepsweet are mixed evenly, and then added to the sodium hydroxide solution for hydration for 8 hours to obtain hydration binder;

[0034] Step S2: 90g of basic zinc carbonate, 8g of activated alumina powder, and 10g of sodium bicarbonate are mixed, then a hydration binder is added, after mixing evenly, granulation is carried out by an extruder or a rolling ball machine, and the formed granules The catalyst was maintained in an incubator at a temperature of 50°C for 8 hours. Dry the cured and matured catalyst in an oven at a drying temperature of 110°C for 3 hours to obtain a dechlorination agent precursor;

[0035] Step S3: Put the dried catalyst in a muffle furnace for calcination at a temperature of 400° C. for 2 hours, and sieve to obtain a dechlorination catalyst.

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Abstract

The invention provides a normal-temperature dechlorinating agent for organochlorine and a preparation method and application thereof. The normal-temperature dechlorinating agent for organochlorine isprepared from the following raw materials in parts by weight: 70-120 parts of an active component precursor, 3-10 parts of an adsorbent, 10-25 parts of a pore forming agent, 20-35 parts of an adhesiveand 0.05-5 parts of a bonding hydration agent, wherein the adhesive comprises sodium bentonite, and the bonding hydration agent is soluble alkali. The normal-temperature dechlorinating agent and thepreparation method thereof have the following beneficial effects: activated aluminum oxide powder is added as an auxiliary agent, so the low-temperature adsorption capacity of the dechlorinating agentcan be effectively enhanced; the bonding hydration agent is prehydrated in the forming process, so the adhesive agent can be fully dispersed, the structural strength of the dechlorinating catalyst isimproved, the effect of a pore-forming agent can be fully played, the micropore structure and specific area of a catalyst are increased, and the chlorine capacity and chlorine removal precision of the catalyst are improved; and moreover, in the existing preparation process, standing for one to two days is required so as to prevent deformation in the calcining process, but however, the curing timein the preparation method is short, and preparation time is further saved.

Description

technical field [0001] The invention belongs to the technical field of catalytic dechlorination, and in particular relates to a normal-temperature organic chlorine dechlorination agent, a preparation method and an application. Background technique [0002] Catalytic reforming is an important secondary processing process in crude oil processing. Chlorine corrosion in catalytic reforming units is a growing concern. There are three main sources of chlorine in reformed oil: chlorine in crude oil, chlorine lost on acid catalyst, and chlorine added to maintain catalyst performance. Among them, chlorine in crude oil includes inorganic chlorine and organic chlorine, and inorganic chloride in crude oil includes MgCl 2 , CaCl 2 Hydrogen chloride can be hydrolyzed to corrode equipment; the organic chlorine in crude oil mainly comes from the chlorine-containing additives added in the crude oil extraction process. These organic chlorides are neither soluble in water nor difficult to r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/08B01J20/30B01D53/86B01D53/68C10G35/04B01J23/06
CPCB01J20/08B01D53/8659C10G35/04B01J23/06B01J37/0018
Inventor 艾关林石旭薛铮高杰杭陶凌云孙睿雷张洁
Owner 湖北浚然新材料有限公司
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