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Preparation method of antitoxin suitable for high pressure conversion

A high-voltage conversion and anti-toxic agent technology, which is applied in chemical instruments and methods, catalyst protection, physical/chemical process catalysts, etc., can solve the problems of heterogeneous polycrystalline spinel materials, complex processes, and difficulty in homogenization

Active Publication Date: 2010-08-04
湖北双雄催化剂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is difficult to achieve uniform mixing of raw materials, resulting in the heterogeneity of the prepared polycrystalline spinel material
And the cost of raw materials is high, and the process is complicated

Method used

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  • Preparation method of antitoxin suitable for high pressure conversion
  • Preparation method of antitoxin suitable for high pressure conversion
  • Preparation method of antitoxin suitable for high pressure conversion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] according to figure 2 After the raw material (α-gibbsite) is dried, it is crushed to 325 mesh in the crushing process, and the fine α-gibbsite is placed in a high-temperature rapid dehydration device, and the hot gas at 600-900°C is in a highly turbulent hot air flow Stay in the middle for 0.1 to 1 second for flash roasting to generate transition state alumina; then through the cyclone separator, after separation, the fine powder is added with a concentration of 40% zinc acetate (in terms of mass percentage) as a binder, and the The raw balls of the required size are made in a type granulator, and then soaked in hot water, and continuously fed with steam to complete the hydration process. In the final activation process, the spherical zinc-aluminum spinel carrier is prepared by roasting at 600-900°C. The carrier is co-impregnated with 3% cobalt acetate (in terms of its mass percentage), 7% of ammonium molybdate (in its mass percentage), etc. in an ammonia solution, an...

Embodiment 2

[0029] according to figure 2 After the raw material (α-gibbsite) is dried, it is crushed to 325 mesh in the crushing process, and the fine α-gibbsite is placed in a high-temperature rapid dehydration device, and the hot gas at 600-900°C is in a highly turbulent hot air flow Stay in the middle for 0.1~1 second to carry out flash roasting, generate transitional state alumina; then through the cyclone separator, after the separation, the fine powder is added with a concentration of 40% zinc chloride (in terms of its mass percentage) as a binder, in The raw balls of the required size are made in the disc granulator, and then soaked in hot water, and continuously fed with steam to complete the hydration process. In the final activation process, the spherical zinc-aluminum spinel carrier is prepared by roasting at 600-900°C. The carrier is co-impregnated with 3% cobalt acetate (in terms of its mass percentage), 7% of ammonium molybdate (in its mass percentage), etc. in an ammonia ...

Embodiment 3

[0031] according to figure 2 After the raw material (α-gibbsite) is dried, it is crushed to 325 mesh in the crushing process, and the fine α-gibbsite is placed in a high-temperature rapid dehydration device, and the hot gas at 600-900°C is in a highly turbulent hot air flow Stay in the middle for 0.1-1 second for flash roasting to generate transition state alumina; then through the cyclone separator, after separation, the fine powder is added with a concentration of 40% zinc sulfate (in terms of its mass percentage) as a binder, and the The raw balls of the required size are made in a type granulator, and then soaked in hot water, and continuously fed with steam to complete the hydration process. In the final activation process, the spherical zinc-aluminum spinel carrier is prepared by roasting at 600-900°C. The carrier is co-impregnated with 3% cobalt acetate (in terms of its mass percentage), 7% of ammonium molybdate (in its mass percentage), etc. in an ammonia solution, a...

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Abstract

The invention relates to a preparation method of an antitoxin suitable for high pressure conversion. An antitoxin carrier is the improvement of spherical activated alumina production by a quick dehydration method, so that the antitoxin carrier is converted into a spherical gahnite carrier; and the method of Patent ZL200610125452.8 is used for impregnation in order to obtain the antitoxin. The antitoxin can be used for protecting the cobalt-molybdenum carbon monoxide sulfur resistance conversion catalyst in the carbon monoxide conversion technique under the pressure greater than 3.0 MPa. The high pressure resistance of the antitoxin is superior to that in Patent ZL200610125452.8, and the antitoxic activity and cost are superior to those of the antitoxin using magnesia alumina spinel as the carrier in traditional mixed-grinding band extrusion.

Description

technical field [0001] The invention relates to a preparation method of an antivirus suitable for high-voltage conversion. Background technique [0002] At present, there are two main types of preparation methods for the preparation of anti-toxic agents for protecting cobalt molybdenum carbon monoxide sulfur-tolerant shift catalysts: one is activated alumina (γ-Al 2 o 3 ) is an anti-virus agent made as a carrier, used in the pressure range of ≤3.0MPa, such as the invention patent ZL200610125452.8. However, under the pressure > 3.0MPa and high water vapor partial pressure, γ-Al 2 o 3 The carrier structure is unstable, prone to crystal transformation, resulting in a sharp decline in the strength of the antitoxic agent or even pulverization, and an increase in bed resistance, making it impossible to continue to use. The other is γ-Al 2 o 3 Magnesium oxide (MgO) is added to generate magnesium aluminum spinel as an anti-virus agent, which is suitable for the conversion p...

Claims

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Application Information

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IPC IPC(8): B01J33/00B01J27/02
Inventor 周志斌胡中光熊俊杰陈劲松
Owner 湖北双雄催化剂有限公司
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