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Desoxidant with sulfur tolerance and preparation method thereof

A deoxidizer and high-performance technology, applied in the field of deoxidizer, can solve the problems of low deoxidation accuracy and oxygen capacity, inability to remove small molecule harmful gases, single function, etc., and achieve a well-developed pore structure, which is conducive to the diffusion of oxygen. The effect of large surface area

Inactive Publication Date: 2018-05-11
SHENYANG SANJUKAITE CATALYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the defects of low deoxidation accuracy and low oxygen capacity in the prior art, thereby providing a deoxidizer with sulfur resistance and its preparation method
[0007] Another technical problem to be solved by the present invention is to overcome the defect that the deoxidizer in the prior art has a single function and cannot remove small molecular harmful gases, so as to provide a deoxidizer with sulfur resistance and its preparation method

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  • Desoxidant with sulfur tolerance and preparation method thereof
  • Desoxidant with sulfur tolerance and preparation method thereof
  • Desoxidant with sulfur tolerance and preparation method thereof

Examples

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Embodiment 1

[0031] The preparation method of the deoxidizer with sulfur resistance provided by the present embodiment comprises the following steps:

[0032] (1) Preparation of modified molecular sieve: mix copper sulfate solution and zinc sulfate solution to prepare an ion exchange solution containing Cu ions and Zn ions, wherein the concentrations of Cu and Zn are 0.1mol / L and 0.03mol / L respectively; weigh Add 50 g of NaY molecular sieves to 600 g of ion exchange solution and mix, stir at a constant temperature for 20 h at a temperature of 40 ° C, filter the solution, wash 3 times, and dry at 110 ° C for 3 h to obtain a modified molecular sieve;

[0033] (2) Preparation of deoxidizer: 105g iron red, 49gMnCO 3 and 40g of modified molecular sieves were crushed to 300 mesh, mixed with 52g of kaolin, molded with water, dried in the sun, and calcined at 400°C for 4 hours to obtain a deoxidizer with sulfur resistance.

[0034] In the deoxidizer prepared by the above examples, based on the to...

Embodiment 2

[0036] The preparation method of the deoxidizer with sulfur resistance provided by the present embodiment comprises the following steps:

[0037] (1) Preparation of modified molecular sieve: Mix copper nitrate solution and zinc nitrate solution to prepare an ion exchange solution containing Cu ions and Zn ions, wherein the concentrations of Cu and Zn are 0.1mol / L and 0.03mol / L respectively; weigh 13X Add 50 g of molecular sieves to 700 g of ion exchange solution and mix, stir at a constant temperature for 20 h at a temperature of 40 ° C, filter the solution, wash 3 times, and dry at 110 ° C for 3 h to obtain a modified molecular sieve;

[0038] (2) Preparation of deoxidizer: 90g Fe(OH) 3 , 97g MnCO 3 and 40g of modified molecular sieves were crushed to 300 mesh, mixed with 50g of attapulgite, molded with water, dried in the sun, and roasted at 450°C for 4 hours to obtain a deoxidizer with sulfur resistance.

[0039] In the deoxidizer prepared by the above examples, based on th...

Embodiment 3

[0041] The preparation method of the deoxidizer with sulfur resistance provided by the present embodiment comprises the following steps:

[0042] (1) Preparation of modified molecular sieve: mix copper chloride solution and zinc chloride solution to prepare an ion exchange solution containing Cu ions and Zn ions, wherein the concentrations of Cu and Zn are 0.1mol / L and 0.03mol / L respectively; Take 50g of ZSM-5 molecular sieve, add it to 700g of ion exchange solution and mix, stir at a constant temperature for 20h at a temperature of 40°C, filter the solution, wash 3 times, and dry at 110°C for 3h to obtain a modified molecular sieve;

[0043] (2) Deoxidizer preparation: 190g Fe 3 o 4 , 72gMnO 2 and 45g of modified molecular sieves were crushed to 300 mesh, mixed with 43g of diatomaceous earth, formed by adding water, dried naturally, and calcined at 450°C for 4 hours to obtain a deoxidizer with sulfur resistance.

[0044] In the deoxidizer prepared by the above examples, ba...

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Abstract

The invention discloses a desoxidant with sulfur tolerance and a preparation method thereof. The desoxidant comprises a carrier and an active component, in terms of the total mass of the desoxidant, the carrier content is 10-20wt%, the active component includes an Fe oxide and an Mn oxide, wherein in terms of FeO, the content of the Fe oxide is 10-50wt%, and the content of the Mn oxide, in terms of MnO, is 10-50wt%, and the desoxidant also includes a modified molecular sieve, the content of which is 20-25wt%. The desoxidant with sulfur tolerance disclosed by the invention not only has high deoxidation precision and large oxygen capacity, but also has high hardness, and does not powder easily. At the same time, the desoxidant with sulfur tolerance has excellent desulfurization function.

Description

technical field [0001] The invention relates to the field of deoxidizers, in particular to a deoxidizer with sulfur resistance and a preparation method thereof. Background technique [0002] Many gas raw materials in industrial production contain a small amount of oxygen, and the raw material gas containing a small amount of oxygen not only threatens the safe operation of equipment, but also poisons some catalysts, causes great safety hazards to production and transportation, and affects product quality. For example, in the propylene polymerization process, if the oxygen content in the propylene raw material is too high, it will lead to a significant decline in product quality. For the electronics and metallurgical industries, although oxygen will not cause catalyst poisoning, it will also have a certain adverse effect on the performance of the catalyst. With the rapid development of science and technology and industrial development, the demand for product quality is also i...

Claims

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Application Information

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IPC IPC(8): B01D53/81B01D53/46
CPCB01D53/46B01D53/81B01D2259/128B01D2257/104
Inventor 许灵瑞赵素云倪雪梅
Owner SHENYANG SANJUKAITE CATALYST
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