Solid reactant for in-situ preparation of chlorine from hydrochloric acid

A solid reactant, in-situ system technology, applied in the field of hydrochloric acid technology, can solve problems such as difficult technology

Pending Publication Date: 2020-06-09
无锡玖汇科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems in the prior art, the present invention provides a solid reactant for in-situ production of chlorine gas from hydrochloric acid, which solves the difficulties in the existing process of producing chlorine gas from hydrogen chloride, uses china clay powder as a carrier, and uses copper salt as a reaction material to form Copper oxide solid reactant with large surface area

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A solid reactant for producing chlorine in situ with hydrochloric acid, the preparation steps are as follows:

[0017] Step 1, mixing china clay powder and copper hydroxide powder according to a mass ratio of 2:1 to obtain a mixture;

[0018] Step 2, adding the mixture to water and stirring to form a viscous suspension slurry, and then adding it to a mold to fix it;

[0019] Step 3, drying and roasting the viscous slurry fixedly formed to obtain a solid reactant, the drying temperature is 100-120°C, and the roasting temperature is 800-900°C.

[0020] The prepared solid reactant is a tooth spherical particle with a diameter of 2mm and a specific surface area of ​​200m 2 / g, the bulk density is 0.7g / cm 2 .

Embodiment 2

[0022] A solid reactant for producing chlorine in situ with hydrochloric acid, the preparation steps are as follows:

[0023] Step 1, adding the china clay powder to the copper chloride aqueous solution to knead and stir to form a suspension, the mass ratio of the china clay powder to the cupric chloride is 1:1;

[0024] Step 2, adding the suspension into a mold to fix the shape, then drying and roasting to obtain a solid reactant. The drying temperature is 100-120°C, and the roasting temperature is 800-900°C.

[0025] The tail gas is collected during the drying process to prevent the chlorine in the tail gas from causing environmental pollution.

[0026] The prepared solid reactant is in the form of toothed spherical particles with a diameter of 3mm and a specific surface of 300m 2 / g, the bulk density is 0.6g / cm 2 .

Embodiment 3

[0028] A solid reactant for producing chlorine in situ with hydrochloric acid, comprising the steps of:

[0029] Step 1, mixing china clay powder and copper hydroxide powder according to the mass ratio of 2:0.5 to obtain a mixture;

[0030] Step 2, putting the mixture into a mold for fixed molding, then adding an aqueous solution of cupric chloride for osmotic wetting, and for secondary fixed molding to obtain a prefabricated block, the mass ratio of the china clay powder and cupric chloride being 2:1;

[0031] In step 3, the prefabricated block is dried and roasted to obtain a solid reactant, the drying temperature is 110-120°C, and the roasting temperature is 800-900°C.

[0032] The tail gas is collected during the drying process to prevent the chlorine in the tail gas from causing environmental pollution.

[0033] The prepared solid reactant is in the form of toothed spherical particles with a diameter of 3mm and a specific surface of 250m 2 / g, the bulk density is 0.7g / c...

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Abstract

The invention belongs to a hydrochloric acid process, and particularly relates to a solid reactant for in-situ preparation of chlorine from hydrochloric acid; the reactant is tooth-ball-shaped particles, the particle diameter is 2-3 mm, the specific surface area is 200-300 m<2>/g, and the bulk density is 0.6-0.7 g/cm<2>; provided is a specific preparation method. According to the invention, the process difficulty of preparing chlorine from hydrogen chloride in the prior art is solved, and a copper oxide solid reactant with a large specific surface area is formed by using porcelain clay powderas a carrier and copper salt as a reaction material.

Description

technical field [0001] The invention belongs to hydrochloric acid technology, in particular to a solid reactant used for producing chlorine gas in situ with hydrochloric acid. Background technique [0002] Chlorine is an important chemical basic raw material, which is widely used in petrochemical industry and daily life. Many methods for preparing chlorine gas from hydrogen chloride have been reported in the prior art, mainly including electrolysis, direct oxidation of inorganic oxidants and catalytic oxidation. The electrolysis method has the disadvantages of high energy consumption and high cost. Both direct oxidation of inorganic oxidants and catalytic oxidation require pure hydrogen chloride as a raw material, and the production of hydrogen chloride from hydrochloric acid (especially dilute hydrochloric acid) is complex, with numerous equipment and huge energy consumption. Contents of the invention [0003] Aiming at the problems in the prior art, the present inventi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B7/04B01J23/72B01J35/10B01J35/08B01J37/08
CPCC01B7/04B01J23/72B01J35/1019B01J35/023B01J35/08B01J37/082
Inventor 吕佳烨
Owner 无锡玖汇科技有限公司
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