Antichlor used for purifying reforming regeneration gas and preparation method of antichlor

A dechlorination agent and regenerating gas technology, applied in chemical instruments and methods, separation methods, gas treatment, etc., can solve problems such as small chlorine capacity, and achieve the effects of acid enhancement, dispersion promotion, and uniformity promotion.

Active Publication Date: 2016-04-13
SHENYANG SANJUKAITE CATALYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the defect of small chlorine capacity in the dechlorination agent in the prior art, and then provide a gas phase dechlorination agent with high chlorine capacity and prevent hardening and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) 60g aluminum nitrate, 32g silica sol (containing 28wt% SiO 2 ) into deionized water to form an Al-Si mixed solution, under constant stirring, use ammonia water (ammonia content 14wt%) to adjust the pH=8 of the Al-Si mixed solution, and control the temperature to 50°C, add 8g of nitric acid after stirring for 30min Zirconium, continue to stir and react for 30 minutes, then age for 30 minutes, filter the reaction system with suction, collect the filter cake, dry the filter cake at 90°C for 4 hours, extrude it, and then roast it at 500°C for 3 hours to obtain a composite oxide carrier;

[0030] (2) dissolving magnesium nitrate in deionized water to form a 1.5mol / L impregnating solution, placing the composite oxide carrier of step (1) in the impregnating solution, the mass ratio of the carrier to the impregnating solution being 100:136;

[0031] After the impregnation is completed, collect the solid phase, dry at 100°C for 4 hours, and then roast at 500°C for 4 hours to o...

Embodiment 2

[0034] (1) 60g aluminum acetate, 36g silica sol (containing 22.5wt% SiO 2 ) into deionized water to form an Al-Si mixed solution, under continuous stirring, use 20wt% ammonium carbonate aqueous solution to adjust the pH=7 of the Al-Si mixed solution, and control the temperature to 30°C, add 4g of zirconium acetate after stirring for 30min , continue to stir and react for 30 minutes, then age for 50 minutes, filter the reaction system with suction, collect the filter cake, dry the filter cake at 110°C for 3 hours, extrude it, and then roast it at 400°C for 3 hours to obtain a composite oxide carrier;

[0035] (2) Magnesium nitrate and calcium nitrate are dissolved in deionized water to form an impregnation solution with a molar concentration of magnesium and calcium of 1.25mol / L respectively, and the composite oxide carrier of step (1) is placed in the impregnation solution. The mass ratio of liquid is 100:120;

[0036] After the impregnation is completed, collect the solid ph...

Embodiment 3

[0039] (1) 60g aluminum chlorate, 34g silica sol (containing 15wt% SiO 2 ) into deionized water to form an Al-Si mixed solution, under constant stirring, use ammonia water (ammonia content 20wt%) to adjust the pH=9 of the Al-Si mixed solution, and control the temperature to 70°C, add 6g of oxygen after stirring for 20min Zirconium chloride, continue to stir and react for 30 minutes, then age for 40 minutes, filter the reaction system with suction, collect the filter cake, dry the filter cake at 100°C for 5 hours, extrude it, and then roast it at 600°C for 4 hours to obtain a composite oxide carrier;

[0040] (2) Sodium dodecylbenzenesulfonate is dissolved in deionized water, and calcium nitrate and barium nitrate are added under constant stirring to form an impregnation solution with calcium and barium molar concentrations of 0.5mol / L respectively, and the step (1) The composite oxide carrier is placed in the immersion solution, the mass ratio of the carrier to the immersion s...

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PUM

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Abstract

The invention provides an antichlor used for purifying reforming regeneration gas. The antichlor is prepared from, by mass, 85-90wt% of a composite oxide carrier and 10-15wt% of alkaline earth metal oxide. The composite oxide carrier is a mixture formed by Al2O3, SiO2 and ZrO2 at the mass ratio of 80:(80-100):(1-3), the specific surface area of the composite oxide carrier is 310-340 m<2>/g, and the total acid content is 0.31-0.45 mmol/g. According to the antichlor, composite oxide with a specific composition is adopted as the carrier, the total acid content of the carrier can be easily controlled within a proper range so that the bonding force between metal active components and the carrier can be regulated and controlled to be moderate, accordingly, it is guaranteed that the antichlor has both high chlorine capacity and high anti-hardening capability, and thus the antichlor has broad industrialized application prospects.

Description

technical field [0001] The invention relates to the technical field of purifiers, in particular to a dechlorination agent for purifying reformed regeneration gas and a preparation method thereof. Background technique [0002] In the petrochemical industry, the activity of the reforming catalyst in the catalytic reforming process will gradually decline during use, and it needs to be regenerated regularly to restore its activity, and the regeneration process of the reforming catalyst needs to use organic chloride as the regeneration medium to oxygenate the catalyst. Chlorination treatment, during or after the oxychlorination process, part of the residual organic chloride is converted to HCl under high temperature conditions. HCl will cause corrosion to pipelines or equipment as the regenerated gas flows into the subsequent system, or venting will pollute the atmosphere. In addition, if the raw material in the downstream process contains ammonia gas, the meeting of the two wil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/81B01D53/68
CPCB01D53/685B01D53/81B01D2257/2045
Inventor 张媛
Owner SHENYANG SANJUKAITE CATALYST
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