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Normal-temperature dechlorinating agent

A dechlorination agent, room temperature technology, applied in other chemical processes, dispersed particle separation, chemical instruments and methods, etc., can solve the problems of energy consumption, increase the cost of dechlorination agent preparation, etc., to reduce energy consumption and improve dechlorination effect. , the effect of crystal regularity

Active Publication Date: 2014-12-17
SHENYANG SANJUKAITE CATALYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the dechlorination agent in the prior art needs to consume excess energy due to the roasting process in the preparation process, set up supporting equipment, increase the technical problem of the preparation cost of the dechlorination agent, and then provide a A normal temperature dechlorination agent with simple preparation method, low cost and high chlorine capacity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Weigh 25g of ferrous sulfate, 40g of calcium oxide, and 15g of active attapulgite clay and mix them, then knead them for 45 minutes; add 35g of silica sol to the above-mentioned uniform dry material, and wet-mix the above-mentioned materials for 30 minutes until they are mixed and rolled into Paste, put the above paste on a small extruder and extrude Ф4 strips; dry the above strips at 180°C for 2 hours to obtain the dechlorination agent.

[0027] The physical properties of the above-mentioned dechlorination agent were tested, and the pressure test strength of the dechlorination agent was measured by ZQJ-Ⅱ intelligent particle strength testing machine (manufactured by Dalian Intelligent Testing Machine Factory) to be 79N / cm, and the bulk specific gravity was 0.66g / ml; Pulverize the dechlorination agent prepared above to 20-40 mesh, and -1 1. Evaluate its chlorine capacity under the condition of room temperature 23 ℃, the test result shows that the one-time breakthrough c...

Embodiment 2

[0029] Weigh 25g of ferrous sulfate, 40g of calcium oxide, 15g of active attapulgite clay and 20g of spent catalyst and mix them, then knead for 45min; add 35g of silica sol to the above-mentioned uniform dry material, and wet mix the above-mentioned substances for 30 minutes Minutes until it is mixed and ground into a paste, put the above paste on a small extruder, and extrude Ф4 strips; dry the above strips at 180 ° C for 2 hours to obtain the dechlorination agent. Wherein, the particle size of the spent catalyst agent is not greater than 10 nanometers, and it is provided by CNPC Yunnan Petrochemical Co., Ltd. during the process of producing methanol.

[0030] Carry out physical property test to above-mentioned dechlorination agent, the pressure test strength of this dechlorination agent is 89N / cm, bulk specific gravity is 0.69g / ml; Speed ​​3000h -1 1. Evaluate its chlorine capacity under the condition of room temperature 23 ℃, the test result shows that the one-time breakt...

Embodiment 3

[0032] Weigh 30g of ferrous sulfate, 40g of calcium oxide, and 25g of active attapulgite clay and mix them, and then knead them for 40 minutes; add 40 g of the above-mentioned uniform dry material to silica sol, and wet-mix the above-mentioned materials for 30 minutes until they are mixed and rolled into Paste, put the above paste on a small extruder and extrude Ф4 strips; dry the above strips at 180°C for 2 hours to obtain the dechlorination agent.

[0033] Carry out physical property test to above-mentioned dechlorination agent, the pressure test strength of this dechlorination agent is 73N / cm, bulk specific gravity is 0.68g / ml; Speed ​​3000h -1 1. Evaluate its chlorine capacity under the condition of room temperature 23 ℃, the test result shows that the one-time breakthrough chlorine capacity of the dechlorination agent prepared in this embodiment is 55%.

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Abstract

The invention discloses a normal-temperature dechlorinating agent. The normal-temperature dechlorinating agent is mainly prepared from 20-30 parts of ferrous sulfate, 20-40 parts of CaO and 10-25 parts of attapulgite clay in parts by weight and further comprises 15-25 parts of waste catalyst, wherein active components of the waste catalyst include copper oxide and zinc oxide. According to the normal-temperature dechlorinating agent, the ferrous sulfate has weak acidity and can react with calcium carbonate impurity in calcium oxide to enable the crystal form of the calcium oxide to be more regular, and meanwhile, ferrous ions are continuously oxidized into iron oxide to enable the crystal forms of the calcium oxide and the iron oxide to be mutually doped, so that the dechlorinating effect of the dechlorinating agent is improved; and according to a preparation method of dechlorinating agent disclosed by the invention, a roasting process is not needed, the energy consumption is reduced, devices used in the preparation process are decreased, the preparation step is simplified, and the preparation cost is lowered.

Description

technical field [0001] The invention relates to a normal temperature dechlorination agent, which belongs to the technical field of gas purification. 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. During or after the oxychlorination process, part of the residual organic chloride is converted into hydrogen chloride HCl under high temperature conditions. HCl will flow into the pipes and equipment of the subsequent system with the regenerated gas, causing corrosion to the pipes or equipment, or polluting the atmosphere after venting. In addition, if the downstream process raw materials contain ammonia NH 3 , it will generate ammonium chloride, which will cause equipment blockage, frequent fouling at the inlet of the circulation compressor, and affect the normal operation of the device; in ad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/12B01J20/24B01J20/30B01D53/02B01D53/68B01D53/81
Inventor 单红飞赵素云张婷马海福李博张楠张媛陈玲玲
Owner SHENYANG SANJUKAITE CATALYST
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