Protective agent for sulfur-tolerant shift catalyst

Abstract

The protective agent comprises a protective agent body, a groove and a through hole, the groove is formed in the outer surface of the protective agent body, and the through hole is formed in the outer surface of the protective agent body; according to the protective agent disclosed by the invention, the plurality of uniformly distributed grooves and the plurality of uniformly distributed through holes are formed in the outer surface of the protective agent body, so that the adsorption area of the protective agent body can be increased under the condition that the protective agent body has relatively good rolling performance, and thus the adsorption capacity of the protective agent body is improved; and the through holes are formed between the adjacent grooves, so that rapid diffusion and transmission of adsorbate are facilitated, and the adsorption process is more efficient.

Description

Technical Field

[0001] The utility model relates to the technical field of protective agents, in particular to a protective agent for a sulfur-resistant conversion catalyst. Background Art

[0002] At present, the utilization of coal in my country's coal chemical enterprises mainly involves converting coal into coal gas first, and then shifting and adjusting the coal gas components to meet the requirements of producing oil products, methanol, natural gas, synthetic ammonia, etc. The long-term operation of coal gas shift mainly depends on the toxic components in the coal gas and the removal efficiency of the shift protective agent. At present, due to the influence of gasifier furnace type and coal quality used for gasification, the toxic components in the coal gas are difficult to be completely treated, so the detoxification function of the shift protective agent is particularly important.

[0003] The shapes of the existing sulfur-resistant conversion catalyst protective agents are generally strips, columns and spheres. When the protective agent is used, its rolling performance and adsorption performance are crucial. Better rolling performance can make the protective agent flow more smoothly in the catalyst bed, which helps to maintain the permeability of the catalyst bed. Better adsorption performance can efficiently remove toxic substances and improve catalytic efficiency. For spherical protective agents, at the same volume, the rolling performance of the spherical protective agent will be greater than the rolling performance of the columnar protective agent and the strip protective agent, but its adsorption area will be smaller than the adsorption area of ​​the columnar protective agent and the strip protective agent, resulting in lower adsorption performance of the spherical protective agent. For this reason, a protective agent for sulfur-resistant conversion catalyst is proposed. Utility Model Content

[0004] The purpose of the present utility model is to provide a protective agent for a sulfur-resistant conversion catalyst, which can solve the problem that under the same volume, the rolling performance of a spherical protective agent is greater than that of a columnar protective agent and a strip protective agent, but its adsorption area is smaller than the adsorption area of ​​the columnar protective agent and the strip protective agent, resulting in lower adsorption performance of the spherical protective agent.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a protective agent for a sulfur-resistant shift catalyst, comprising a protective agent body and:

[0006] A groove is provided on the outer surface of the protective agent body;

[0007] A through hole is provided on the outer surface of the protective agent body.

[0008] Preferably, the outer surface of the protective agent body located outside the through hole is a curved surface.

[0009] Preferably, the protective agent body uses attapulgite clay as the main carrier material, a magnesium-containing powdered solid compound is added to the carrier, the active components are copper and nickel binary components, and an active auxiliary agent is added, and the active auxiliary agent can be one or more of zinc oxide, iron oxide, chromium oxide, zirconium oxide or their corresponding soluble salts.

[0010] Preferably, the roughness of the protective agent body is 10 to 30 μm.

[0011] Preferably, there are a plurality of grooves, which are evenly distributed on the protective agent body; there are a plurality of through holes, which are evenly distributed on the protective agent body; and the through holes are arranged between adjacent grooves.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. The present application provides a plurality of evenly distributed grooves and a plurality of evenly distributed through holes on the outer surface of the protective agent body, thereby ensuring that the protective agent body has good rolling performance while increasing the adsorption area of ​​the protective agent body, thereby improving the adsorption capacity of the protective agent body and providing better protection for the catalyst. The through holes are arranged between adjacent grooves, which facilitates the rapid diffusion and transmission of the adsorbate, making the adsorption process more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 This is the overall structural view of the utility model.

[0016] Description of reference numerals:

[0017] 1. Protective agent body; 2. Groove; 3. Through hole. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] See also Figure 1, the utility model provides a technical solution:

[0020] A protective agent for a sulfur-resistant shift catalyst, comprising a protective agent body 1, and further comprising:

[0021] The groove 2 is formed on the outer surface of the protective agent body 1;

[0022] The through hole 3 is opened on the outer surface of the protective agent body 1 .

[0023] Specifically, such as Figure 1 As shown, the outer surface of the protective agent body 1 located outside the through hole 3 is a curved surface. The setting of the curved surface helps the protective agent body 1 to flow more smoothly in the catalyst bed to provide better protection.

[0024] Specifically, such as Figure 1 As shown, the protective agent body 1 uses attapulgite clay as the main carrier material, a magnesium-containing powdered solid compound is added to the carrier, the active components are copper and nickel binary components, and an active auxiliary agent is added. The active auxiliary agent can be one or more of zinc oxide, iron oxide, chromium oxide, zirconium oxide or their corresponding soluble salts. The use of attapulgite clay, which is widely available and low in cost, not only has a simple preparation process and low cost, but also has a good adsorption and detoxification effect on poisons such as arsenic (As), hydrocyanic acid, and carbonyl compounds of the sulfur-resistant shift catalyst.

[0025] Specifically, such as Figure 1 As shown, the roughness of the protective agent body 1 is 10 to 30 μm, and it has good adhesion and stability, and can be well attached to the catalyst surface, providing sufficient stability and protection effects.

[0026] Specifically, such as Figure 1 As shown, there are multiple grooves 2, which are evenly distributed on the protective agent body 1, and there are multiple through holes 3, which are evenly distributed on the protective agent body 1. The through holes 3 are arranged between adjacent grooves 2, which can increase the adsorption area of ​​the protective agent body 1, thereby improving the adsorption capacity of the protective agent body 1 and providing better protection effect for the catalyst.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A protective agent for a sulfur-resistant shift catalyst, comprising a protective agent body (1), characterized in that: Also included are: A groove (2), wherein the groove (2) is provided on the outer surface of the protective agent body (1); A through hole (3), wherein the through hole (3) is provided on the outer surface of the protective agent body (1).

2. The protective agent for a sulfur-tolerant shift catalyst according to claim 1, characterized in that: The outer surface of the protective agent body (1) located outside the through hole (3) is a curved surface.

3. The protective agent for a sulfur-resistant shift catalyst according to claim 2, characterized in that: The protective agent body (1) uses attapulgite clay as the main carrier material, a magnesium-containing powdered solid compound is added to the carrier, the active components are copper and nickel binary components, and an active auxiliary agent is added, and the active auxiliary agent can be one or more of zinc oxide, iron oxide, chromium oxide, zirconium oxide or their corresponding soluble salts.

4. The protective agent for a sulfur-tolerant shift catalyst according to claim 3, characterized in that: The roughness of the protective agent body (1) is between 10 and 30 μm.

5. The protective agent for a sulfur-tolerant shift catalyst according to claim 4, characterized in that: There are a plurality of grooves (2) that are evenly distributed on the protective agent body (1); there are a plurality of through holes (3) that are evenly distributed on the protective agent body (1); and the through holes (3) are arranged between adjacent grooves (2).

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