Zincium-calcium dechlorinating agent at normal temperature and its preparing method

A technology of dechlorination agent and clay, which is applied in the field of purification agent, can solve the problems of high dechlorination effect and high chlorine capacity of dechlorination agent, and achieve the goal of improving dechlorination efficiency, excellent dechlorination function and strong water resistance Effect

Active Publication Date: 2008-09-24
BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] What the present invention aims to solve is the problem that the dechlorination agent in the prior art cannot realize its high chlorine capacity and high dechlorination effect at normal temperature, and then provide a kind of dechlorination agent that can realize high dechlorination effect, has high chlorine capacity of normal temperature dechlorination agent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Weigh 10g of active zinc oxide, 55g of calcium hydroxide, 30g of attapulgite clay, and 5g of aluminate cement, and mix them, and then knead them for 10 minutes; add water to the mixed dry material, add water to the above-mentioned Add 80g of starch paste to the wetted dry material, mix and grind the wetted mixture into a paste, shape the paste on a small twin-screw extruder, and extrude a Φ4 strip; The shape is dried at 100°C for 0.5 hours, and then calcined at 330°C for 1.0 hour to obtain the dechlorination agent of the present invention.

[0020] The physical property test of the above-mentioned dechlorination agent shows that the lateral pressure strength of the dechlorination agent is 90N / cm, and the bulk specific gravity is 0.63g / ml; the dechlorination agent prepared above is crushed to 20-40 mesh, and the Speed ​​3000h -1 1. Evaluate its chlorine capacity under the condition of room temperature 20 ℃, the test result shows that the one-time breakthrough chlorine c...

Embodiment 2

[0022] Weigh 15g of active zinc oxide, 50g of calcium hydroxide, 25g of attapulgite clay, and 10g of aluminate cement, and mix them, and then knead them for 13 minutes; add water to the mixed dry material to moisten; the prepared concentration is 2.5-3.0wt% organic pore-forming agent methyl cellulose sodium salt (CMC) solution, adding the above CMC solution to the wetted dry material, and mixing the above wetted mixture into a paste The paste is molded on a small twin-screw extruder, and a Φ3 strip is extruded; the above strip is dried at 120°C for 1.5 hours, and then roasted at 350°C for 0.5 hour to obtain the present invention. The dechlorination agent mentioned above.

[0023] The physical property test of the above-mentioned dechlorination agent shows that the lateral pressure strength of the dechlorination agent is 105N / cm, and the bulk specific gravity is 0.63g / ml; the dechlorination agent prepared above is crushed to 20-40 mesh, and the Speed ​​3000h -1 1. Evaluate it...

Embodiment 3

[0025] Weigh 20g of active zinc oxide, 45g of calcium hydroxide, 20g of kaolin, and 15g of aluminate cement, mix them, and then knead them for 11 minutes; add water to the above-mentioned mixed dry material to moisten; the preparation concentration is 2.5-3.0 Wt% organic pore-forming agent CMC solution, the above CMC solution is added to the wetted dry material, and the above-mentioned wetted mixture is mixed and ground into a paste, and the paste is extruded in a small twin-screw Molding on the machine, extruding Φ3 strips; drying the above strips at 125°C for 3.0 hours, and then roasting at 380°C for 1.5 hours, the dechlorination agent of the present invention can be obtained.

[0026] The physical property test of the above-mentioned dechlorination agent shows that the lateral pressure strength of the dechlorination agent is 87N / cm, and the bulk specific gravity is 0.59g / ml; the dechlorination agent prepared above is crushed to 20-40 mesh, and the Speed ​​3000h -1 1. The c...

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PUM

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Abstract

The invention relates to a normal temperature dechlorinating agent, the dechlorination agent comprises an active ingredient and a carrier, the active ingredient comprises a admixture formed by active ZnO, Ca(OH) 2 or light weight CaCO3; the carrier comprises clay and aluminate cement. The invention also discloses the preparation method of the dechlorination agent, the normal temperature dechlorination agent prepared by the method can realize the dechlorination function of the dechlorination agent in normal temperature with relatively higher chloride content and higher dechlorination accuracy.

Description

technical field [0001] The invention relates to a zinc-calcium fine dechlorination agent which can be used for normal temperature reaction and belongs to the field of purifying agents. Background technique [0002] At present, in the production of petrochemical and chemical fertilizer industries, there are often more or less hydrogen chloride gas residues in the materials. Hydrogen chloride gas is an acidic and corrosive gas. This gas not only has a strong corrosive effect on production equipment, but also has side effects on high-efficiency catalysts used in petrochemical and fertilizer production, which can easily lead to catalyst poisoning and deactivation. Directly affect the above-mentioned normal industrial production. Therefore, it is necessary to effectively remove the raw material gas or the hydrogen chloride gas generated in the production process in the above-mentioned industrial production. [0003] In the prior art, commonly used dechlorination agents are divi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/68
Inventor 喻永生刘振义刘凤仁
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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