Catalyst protective agent and preparation method thereof

A protective agent and catalyst technology, applied in the field of preparation of the protective agent, can solve the problems of main catalyst poisoning, main catalyst activity decrease, pressure drop increase, etc., achieve good demetallization and decarbonization performance, protection activity stability, prolong The effect of service life

Inactive Publication Date: 2009-11-11
张亮
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the oil refining industry, due to the complexity and variety of crude oil, impurities such as iron, calcium, and sodium in the raw materials, and colloids and asphaltenes that are easy to generate charcoal, it is easy to cause the top of the reactor bed to agglomerate and the pressure drop to rise, resulting in the failure of the main catalyst. There is a significant drop in activity, which may even cause the main catalyst to be poisoned and lose its catalytic effect, thereby affecting production

Method used

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  • Catalyst protective agent and preparation method thereof
  • Catalyst protective agent and preparation method thereof
  • Catalyst protective agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Add appropriate amount of pore-enlarging agent, pore volume agent and high-efficiency binder to 90% carrier component powder, and form a muddy slurry with good plasticity after rolling and kneading; use a piston or a screw to force the above-mentioned muddy slurry through the pores board, cut into strip-shaped cylinders of almost equal length and diameter, dried and calcined to obtain a semi-finished product; then use the co-precipitation method to soak the above semi-finished product in nickel nitrate and molybdenum nitrate solution to obtain a finished product within a predetermined content range , wherein the content of the active component NiO at this time is 0.8%, and the active component MoO 3 The content of the catalyst protection agent of the present invention is 1.0%, which can be obtained by drying.

Embodiment 2

[0027] Add 98.2% of the carrier component powder to an appropriate amount of pore-enlarging agent, pore volume agent and high-efficiency binder, and form a mud-like slurry with good plasticity after rolling and kneading; use a piston or a screw to force the above-mentioned mud-like slurry through the pores board, cut into almost equal-length and equal-diameter strip-shaped ring cylinders, dried and calcined to obtain the semi-finished product; then use the co-precipitation method to soak the above-mentioned semi-finished product in nickel nitrate and molybdenum nitrate solution to obtain the predetermined content range. Finished product, wherein the content of the active component NiO at this time is 1.2%, the active component MoO 3 The content is 1.5%, drying can wait until the catalyst protection agent of the present invention.

Embodiment 3

[0029] Add appropriate amount of pore-enlarging agent, pore volume agent and high-efficiency binder to 95% carrier component powder, and form a muddy slurry with good plasticity after rolling and kneading; use a piston or a screw to force the above-mentioned muddy slurry through the pores board, cut into strip-shaped clover with almost equal length and equal diameter, dried and calcined to obtain the semi-finished product; then use the co-precipitation method to soak the above semi-finished product in nickel nitrate and molybdenum nitrate solution to obtain the finished product within the predetermined content range, Wherein at this moment the content of active component NiO is 1.0%, active component MoO 3 The content is 1.2%, drying can wait until the catalyst protection agent of the present invention.

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Abstract

The invention discloses a catalyst protective agent, which mainly comprises the following components: 90 to 98.2 percent of AlO3+SiO as carrier components, 0.8 to 1.2 percent of NiO as an active component, and 1.0 to 1.5 percent of MoO3 as the active component. A method for preparing the catalyst protective agent comprises the following steps: a. adding an appropriate quantity of pore-expanding agents, pore volume agents and efficient binders to carrier component powder, rolling and kneading the materials to form mashed sticky pulp with good plasticity; b. cutting the mashed sticky pulp into small pieces equivalent in size through a porous plate, drying and calcining the small pieces to obtain semi-finished products; and c. using a coprecipitation method to immerse the semi-finished products in nickel nitrate and nitric molybdenum solution, obtaining finished products within a preset content range and drying the finished products to obtain the catalyst protective agent. The invention aims to overcome deficiencies of the prior art and provide the catalyst protective agent which can effectively protect the activity stability of main catalysts and can prolong the service life of the catalysts.

Description

technical field [0001] The invention relates to a catalyst protecting agent, and also relates to a preparation method of the protecting agent. Background technique [0002] In the oil refining industry, due to the complexity and variety of crude oil, impurities such as iron, calcium, and sodium in the raw materials, and colloids and asphaltenes that are easy to generate charcoal, it is easy to cause the top of the reactor bed to agglomerate and the pressure drop to rise, resulting in the failure of the main catalyst. There is a significant drop in activity, and even the main catalyst will be poisoned and lose its catalytic effect, thereby affecting production. Contents of the invention [0003] The purpose of the present invention is in order to overcome the deficiencies in the prior art, provide a kind of active stability that can effectively protect main catalyst, can prolong the catalyst protective agent of catalyst service life; [0004] Another object of the present ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J33/00
Inventor 张亮
Owner 张亮
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