Catalyst applied to hydrogen chloride oxidization to prepare chlorine as well as preparation method and application thereof

A catalyst, hydrogen chloride technology, applied in the direction of metal/metal oxide/metal hydroxide catalyst, preparation with chloride, physical/chemical process catalyst, etc., can solve problems such as pipeline blockage, production interruption, etc., and achieve long service life , stable activity, good fluidity and active effect

Active Publication Date: 2018-06-01
WANHUA CHEM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the presence of a large amount of catalyst, even a small loss can easily lead to blockage of the pipeline and cause interruption of production

Method used

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  • Catalyst applied to hydrogen chloride oxidization to prepare chlorine as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] (1) Catalyst preparation:

[0070] Preparation of precursor b: Weigh 240g of cerium nitrate, 240g of lanthanum nitrate, 60g of potassium chloride, and 10g of magnesium nitrate and dissolve them in 1000mL of distilled water; Dry in an oven at 90°C to obtain precursor b; divide precursor b into two equal parts.

[0071] Preparation of catalyst precursor B: Take 1 part of precursor b and roast it at 500° C. for 5 h, and then pulverize it into a powder with an average particle size of 5 μm to obtain catalyst precursor B.

[0072] Preparation of catalyst precursor A: Weigh 130g of copper nitrate, 50g of neodymium nitrate, and dissolve 10g of 50wt% manganese nitrate aqueous solution in 500mL of distilled water, add another part of the above-prepared precursor b, soak for 12h and place at 90°C Dry it in an oven to obtain precursor a, then bake it at 500° C. for 5 hours, and pulverize it into a powder with an average particle size of 5 μm to obtain catalyst precursor A.

[00...

Embodiment 2

[0078] (1) Catalyst preparation:

[0079] Preparation of precursor b: Weigh 240g of cerium nitrate, 240g of lanthanum nitrate, 60g of potassium chloride, and 10g of magnesium nitrate and dissolve them in 600mL of distilled water; impregnate 1200g of activated alumina balls with an average diameter of 4.5mm (Zibo Chaoke Aluminum Oxide Materials Co., Ltd.); and then dried by drum vacuum drying to obtain the precursor b; the precursor b was divided into two equal parts.

[0080] Preparation of catalyst precursor B: Take 1 part of precursor b and roast it at 500° C. for 5 h, and then pulverize it into a powder with an average particle size of 5 μm to obtain catalyst precursor B.

[0081] Preparation of catalyst precursor A: Weigh 130g of copper nitrate, 50g of neodymium nitrate, and dissolve 10g of a 50wt% manganese nitrate aqueous solution in 300mL of distilled water, and impregnate the other part of the precursor b prepared above by spraying, and then transfer Drum vacuum dryin...

Embodiment 3

[0087] (1) Catalyst preparation:

[0088] Preparation of precursor b: Weigh 180g praseodymium nitrate, 160g lanthanum nitrate, 50g potassium chloride, 60g cobalt nitrate and dissolve in 550mL distilled water; add 1100g HY molecular sieve (Qilu Huaxin Hi-Tech Co., Ltd.), soak for 12h and place at 90°C drying in an oven to obtain the precursor b; divide the precursor b into 3 equal parts.

[0089] Preparation of catalyst precursor B: Take a part of precursor b and roast it at 450° C. for 3 h, and then pulverize it into a powder with an average particle size of 7 μm to obtain catalyst precursor B.

[0090] Preparation of catalyst precursor A: Weigh 155g of copper nitrate and dissolve it in 600mL of distilled water, add it to the two parts of the above-prepared precursor b, soak it for 12 hours and place it in an oven at 90°C to dry to obtain the precursor a, then in Calcined at 400° C. for 6 h, pulverized into a powder with an average particle size of 4 μm, and obtained catalyst...

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Abstract

The invention provides a catalyst applied to hydrogen chloride oxidization to prepare chlorine as well as a preparation method and application thereof. The catalyst applied to hydrogen chloride oxidization to prepare chlorine disclosed by the invention is prepared from a catalyst precursor A, a catalyst precursor B and an inorganic membrane, wherein the catalyst precursor A is coated by the inorganic membrane, and the catalyst precursor B and the catalyst precursor A are separated by the inorganic membrane; the catalyst precursor A is prepared from a carrier, a copper element, an alkali metalelement and a rare earth element, and the copper element, the alkali metal element and the rare earth element are loaded to the carrier; the catalyst precursor B is prepared from a carrier, an alkalimetal element and a rare earth element, the alkali metal element and the rare earth element are loaded to the carrier, and the catalyst precursor B does not contain the copper element. The catalyst disclosed by the invention is especially suitable for being applied to catalyze hydrogen chloride to be oxidized to prepare chlorine in a fluidized bed reactor and has the characteristics of low copperloss, high activity, reactor corrosion resistance and the like.

Description

technical field [0001] The invention relates to the technical field of preparing chlorine by oxidation of hydrogen chloride, in particular to a catalyst for catalyzing the oxidation of hydrogen chloride to prepare chlorine as well as its preparation method and application. Background technique [0002] Chlorine is an important basic chemical raw material, mainly used in the production of PVC, polyurethane intermediates (MDI, TDI, HDI, etc.), epoxy resin, silicone, synthetic rubber, chlorofluorocarbons, TiO 2 Coatings, organochlorine intermediates (chlorinated benzene, chloroacetic acid, benzyl chloride, chlorotoluene, etc.), some agricultural chemicals, building materials and some pharmaceutical preparations and other chlorine-consuming products. At present, China's chlorine gas is almost entirely produced and supplied by chlor-alkali plants, which not only consumes a lot of energy for chlorine production, but also has a serious excess capacity of co-produced caustic soda. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/10B01J23/83B01J23/889B01J29/08C01B7/04
CPCB01J23/10B01J23/83B01J23/8892B01J29/088B01J35/0006B01J2229/18C01B7/04
Inventor 易光铨孙康初乃波曹传宗殷艳欣黎源华卫琦
Owner WANHUA CHEM GRP CO LTD
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