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A kind of gas phase arsenic removal agent and preparation method thereof

A technology of arsenic removal and gas phase, which is applied in separation methods, chemical instruments and methods, and separation of dispersed particles, and can solve problems such as complex preparation process, small arsenic capacity, and limited application range

Active Publication Date: 2021-09-10
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 in the prior art such as limited application range, small arsenic capacity, and complicated preparation process of gas-phase arsenic removal agents, so as to provide an Arsenic removal agent with simple preparation process
[0006] Another technical problem to be solved by the present invention is to overcome the defects in the prior art such as limited application range, small arsenic capacity, and complicated preparation process of gas-phase dearsenic agents, so as to provide a device with wide application range, large arsenic capacity, and high arsenic removal efficiency. Preparation method of arsenic removal agent with simple preparation process

Method used

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  • A kind of gas phase arsenic removal agent and preparation method thereof
  • A kind of gas phase arsenic removal agent and preparation method thereof
  • A kind of gas phase arsenic removal agent and preparation method thereof

Examples

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Embodiment 1

[0040] This embodiment provides a gas-phase arsenic removal agent and its preparation method. The gas-phase arsenic removal agent has a specific surface area of ​​500m 2 / g of 13X molecular sieve, penetrating agent-EDTA, oxidant-potassium permanganate, γ-alumina powder and binder-cellulose powder are prepared as raw materials, wherein, EDTA 1g, potassium permanganate 1g, 13X molecular sieve 0.67g, γ-alumina powder 2.67g, cellulose powder 0.28g.

[0041] The preparation method of the above gas-phase arsenic removal agent comprises the following steps:

[0042] S1, the specific surface area is 500m 2 The 13X molecular sieve per g is impregnated in the mixed aqueous solution containing EDTA and potassium permanganate, in terms of mass percentage, in the mixed aqueous solution, the EDTA content is 1wt%, the potassium permanganate content is 1wt%, the immersion time is 12h, and then at 90 Under the temperature of ℃, dry for 10h to obtain the precursor sample;

[0043] S2. Dry-mi...

Embodiment 2

[0045] This embodiment provides a gas-phase arsenic removal agent and its preparation method. The gas-phase arsenic removal agent has a specific surface area of ​​400m 2 / g sodium Y molecular sieve, penetrating agent-mass concentration of 25% ammonia, oxidant-nickel oxide, β-alumina powder and binder-water are prepared from raw materials, wherein the mass concentration is 25% of ammonia 1g, 4g of nickelous oxide, 5g of sodium Y molecular sieve, 30g of β-alumina powder, and 0.40g of water.

[0046] The preparation method of the above gas-phase arsenic removal agent comprises the following steps:

[0047] S1, set the specific surface area to 400m 2 The sodium Y molecular sieve per g is impregnated in the mixed aqueous solution containing ammoniacal liquor and nickelous oxide with a mass concentration of 25%. In terms of mass percentage, in the mixed aqueous solution, the ammoniacal liquor content is 1wt%, and the nickelous oxide content is 4wt%, and the immersion time is 1h, t...

Embodiment 3

[0050] This embodiment provides a gas-phase arsenic removal agent and its preparation method, the gas-phase arsenic removal agent has a specific surface area of ​​300m 2 / g of calcium Y molecular sieve, penetrating agent-acetic acid, oxidant-ferric chloride, γ-alumina powder and binder-silica sol are prepared as raw materials, wherein, acetic acid 1g, ferric chloride 7g, calcium Y molecular sieve 1.6 g, gamma-alumina powder 48g, silica sol 6.4g.

[0051] The preparation method of the above gas-phase arsenic removal agent comprises the following steps:

[0052] S1, set the specific surface area to 300m 2 Calcium Y molecular sieve per g is impregnated in the mixed aqueous solution containing acetic acid and ferric chloride, in terms of mass percentage, the acetic acid content in the mixed aqueous solution is 1wt%, the ferric chloride content is 7wt%, the immersion time is 6h, and then at 120 ℃ Under the temperature, dry 5h, obtain precursor sample;

[0053] S2. Dry-mix the pr...

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Abstract

The invention provides a gas-phase arsenic removal agent, comprising the following raw materials: molecular sieve, penetrant and oxidant, the mass ratio of the penetrant to the oxidant is 1: (0.1-10); the quality of the molecular sieve and the penetrant The ratio of the mass sum of the oxidizing agent and the oxidant is 1: (1-10); the present invention also provides a preparation method of a gas-phase arsenic removal agent, comprising, S1, impregnating the molecular sieve in a mixed solution containing a penetrating agent and an oxidizing agent, through Drying to obtain a precursor sample; S2, dry mixing the precursor sample with alumina, adding a binder to form, drying and roasting to obtain the gas-phase arsenic removal agent, which can be used for alkyne-containing The arsenic removal treatment of materials has a wide range of applications, and has high arsenic capacity and arsenic removal efficiency. The preparation of the arsenic removal agent only needs to mix, dry and roast the various raw material components. The process method is simple and the cost is low.

Description

technical field [0001] The invention belongs to the technical field of gas purification, and in particular relates to a gas phase arsenic removal agent and a preparation method thereof. Background technique [0002] The cracked gas fraction and C3 fraction of arsenic-containing naphtha after steam cracking contain impurities such as arsenic compounds. In the subsequent selective hydrogenation to remove acetylene, propyne and propadiene, the effect of arsenic on the activity of hydrogenation catalysts Very serious, poisoning and deactivation of palladium-based, nickel-based, copper-based and platinum-based catalysts. Therefore, in order to protect the noble metal hydrogenation catalyst, it is necessary to install a de-arsenic reactor before the hydrogenation reactor, and use a de-arsenic agent to remove arsenic in gaseous or liquid materials. At present, the commonly used arsenic removal agents in the prior art include copper-based arsenic removal agents and lead-based arsen...

Claims

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Application Information

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IPC IPC(8): B01D53/64B01D53/81
CPCB01D53/64B01D53/81B01D2251/106B01D2251/108B01D2251/306B01D2251/602B01D2253/108
Inventor 迟莹陈玲玲李博
Owner SHENYANG SANJUKAITE CATALYST
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