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A kind of normal temperature desulfurizer and preparation method thereof

A desulfurization agent and normal temperature technology, applied in the field of normal temperature desulfurization agent and its preparation, can solve the problems of inability to remove sulfur at the same time, low desulfurization precision, low total sulfur capacity, etc., and achieve improvement of breakthrough sulfur capacity, sulfur capacity and precision, Effect of improving desulfurization accuracy

Active Publication Date: 2020-08-04
SHENYANG SANJUKAITE CATALYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defects that the desulfurizers in the prior art cannot remove the organic sulfur and inorganic sulfur in the gas at the same time, the total sulfur capacity is low, the desulfurization precision is low, and the wear resistance is poor, so as to provide a Novel, high-efficiency normal temperature desulfurizer and its preparation method and application, the desulfurizer is especially suitable for the desulfurization process of natural gas

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] This embodiment provides a method for preparing a normal temperature desulfurizer, which specifically includes the following steps:

[0046] (1) Calcining alumina monohydrate at 530°C for 6 hours in an atmosphere of 99.99% argon gas to obtain activated γ-Al 2 o 3 ;

[0047] (2) adding 0.7 parts by weight of lanthanum nitrate to 36.8 parts by weight of water for dissolution to obtain a lanthanum impregnation solution;

[0048] (3) Immerse 50 parts by weight of activated gamma-alumina in the lanthanum impregnation solution for 15 hours, filter, and dry at a drying temperature of 120°C for 2 hours, and a nitrogen-protected calcination temperature of 480°C , Roasting time 4.5h.

[0049] (4) the gamma-alumina after the gained impregnation described in step (3) is ground into fines, is sieved with the sieve of 0.150mm with aperture, then mixes with the nano zinc oxide of 45 weight parts, adds 5 weight parts of bentonite, Carry out rolling ball molding, drying, and get sem...

Embodiment 2

[0054] This embodiment provides a method for preparing a normal temperature desulfurizer, which specifically includes the following steps:

[0055] (1) Calcinate alumina monohydrate at 580°C for 4 hours in an atmosphere of 99.99% argon gas to obtain activated γ-Al 2 o 3 ;

[0056] (2) adding 0.7 parts by weight of lanthanum nitrate to 33.05 parts by weight of water for dissolution, to obtain a lanthanum impregnation solution;

[0057] (3) Immerse 45 parts by weight of activated γ-alumina in the lanthanum impregnation solution for 10 hours, filter, and dry at a drying temperature of 120° C. for 2 hours, and a nitrogen-protected calcination temperature of 530° C. , Roasting time 3h.

[0058] (4) the gamma-alumina after the gained impregnation described in step (3) is ground into fines, is sieved with the sieve of 0.150mm with aperture, then mixes with the nano zinc oxide of 46 weight parts, adds 9 weight parts of bentonite, Carry out rolling ball molding, drying, and get sem...

Embodiment 3

[0063] This embodiment provides a method for preparing a normal temperature desulfurizer, which specifically includes the following steps:

[0064] (1) Calcinate alumina monohydrate at 550°C for 5 hours under 99.99% argon gas atmosphere to obtain activated γ-Al 2 o 3 ;

[0065] (2) adding 0.7 parts by weight of lanthanum nitrate to 40.55 parts by weight of water to dissolve, to obtain a lanthanum impregnation solution;

[0066] (3) Immerse 55 parts by weight of activated gamma-alumina in the lanthanum impregnating solution for 20 hours, filter, and dry at a drying temperature of 120° C. for 2 hours, and a nitrogen-protected calcination temperature of 450° C. , Roasting time 6h.

[0067] (4) the gamma-alumina after the gained impregnation described in step (3) is pulverized, is sieved with the sieve of 0.150mm with aperture, then mixes with the nano zinc oxide of 43 parts by weight, adds 2 parts by weight of bentonite, Carry out rolling ball molding, drying, and get semi-fi...

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Abstract

The invention belongs to the technical field of desulfurization in petrochemical industry, and in particular relates to a normal temperature desulfurizer and a preparation method thereof. The desulfurizer comprises the following components by weight: 40-60 parts of gamma-alumina; 40-50 parts of nano zinc oxide; 6-12 parts of transition metal oxides; and 0.3-0.8 parts of rare earth metal oxides. The room temperature desulfurizer provided by the present invention can remove organic sulfur and inorganic sulfur in the gas at the same time through the selection and optimization of the desulfurizer composition and dosage, and the breakthrough sulfur capacity and desulfurization accuracy are greatly improved. When the desulfurization accuracy is 10ppb , The maximum breakthrough sulfur capacity of hydrogen sulfide removal can reach 29.31%, the maximum breakthrough sulfur capacity of organic sulfur removal can reach 25.47%, and the maximum sulfur capacity of total sulfur removal can reach 54.78%. At the same time, in the desulfurizer provided by the present invention, copper oxide is selected as the transition metal, and the effect is optimal when the rare earth metal is lanthanum oxide, and unexpected technical effects have been achieved.

Description

technical field [0001] The invention belongs to the technical field of desulfurization in petrochemical industry, and in particular relates to a normal temperature desulfurizer and a preparation method thereof. Background technique [0002] In recent years, natural gas has gradually entered every household. The main components of natural gas are alkanes and a small amount of impurities. Generally, natural gas contains hydrogen sulfide (inorganic sulfur) impurities, but some natural gas is due to terrain and other reasons. , will also contain a certain amount of organic sulfur impurities. [0003] Organosulfur mainly refers to a stable and difficult-to-decompose organometallic sulfur-containing compound formed through a series of complex chemical reactions between chalcogen elements and heavy metal ions. If there is too much organic sulfur in natural gas, it will give natural gas Use brings bigger inconvenience. This is because, in 1993, my country formulated the factory bo...

Claims

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Application Information

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IPC IPC(8): B01D53/48C10L3/10
CPCC10L3/103
Inventor 廖奕鸥刘聪单红飞赵宇轩
Owner SHENYANG SANJUKAITE CATALYST
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