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Technological process and equipment for catalytically oxidizing HCl to produce CL2

A technology for catalytic oxidation and hydrogen chloride, applied in chlorine/hydrogen chloride, chemical instruments and methods, preparation with chloride, etc., can solve the problem of difficult to realize the circulation of catalyst particles, and achieve simple equipment and instruments, less investment, and less environmental pollution. Effect

Inactive Publication Date: 2003-05-14
JUHUA GRP +1
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this way, the solid catalyst is easy to enter the low-pressure chlorination reactor from the high-pressure oxidation reactor, and it is not easy to enter the high-pressure oxidation reactor from the low-pressure chlorination reactor, and it is difficult to realize the circulation of catalyst particles

Method used

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  • Technological process and equipment for catalytically oxidizing HCl to produce CL2
  • Technological process and equipment for catalytically oxidizing HCl to produce CL2
  • Technological process and equipment for catalytically oxidizing HCl to produce CL2

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specific Embodiment approach

[0043] The catalyst enters the reactor main body from the gas-solid separation chamber 2 through the catalyst inlet 1 . In order to make the catalyst fully enter the reactor, when the catalyst is added, oxygen or air is fed through the gas distributor 7 at the inlet 6 of the gas raw material at the bottom of the reactor. When the gas velocity of oxygen or air is small, most of the catalyst particles stay in the oxidation reactor 5. As the gas velocity increases, the catalyst particles gradually migrate to the chlorination reactor 3 through the gas-solid distribution plate 4, the height of the dense phase in the oxidation reactor 5 gradually decreases, and the height of the dense phase in the chlorination reactor 3 gradually increases. As the gas velocity continues to increase, the amount of particles in the chlorination reactor gradually exceeds the amount of particles in the oxidation reactor; when the particles in the oxidation reactor will be completely blown out, it is an ...

Embodiment 1

[0049] in such as figure 1 The shown two-stage fluidized bed device for producing chlorine from hydrogen chloride reacts. The feed is hydrogen chloride and oxygen with a molar ratio of 2:1; the temperature in the oxidation reactor is 400°C and the pressure is 0.05MPa; the temperature in the chlorination reactor is 200°C and the pressure is 0.01MPa; the weight space velocity is 0.3 Hour -1 , the superficial velocity of the raw gas is 0.45 m / s. The reaction hydrogen chloride conversion rate is 100%, and the selectivity is 99.5%.

Embodiment 2

[0051] in such as figure 1 The shown two-stage fluidized bed device for producing chlorine from hydrogen chloride reacts. The feed is hydrogen chloride and oxygen with a molar ratio of 4:1; the temperature in the oxidation reactor is 380°C and the pressure is 0.05MPa; the temperature in the chlorination reactor is 210°C and the pressure is 0.01MPa; the weight space velocity is 0.2 Hour -1 , the superficial velocity of the raw gas is 0.2 m / s. The reaction hydrogen chloride conversion rate is 95.4%, and the selectivity is 99.5%.

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Abstract

In the present invention, a gas-solid distributing board is set inside the fluidized bed riser tube to form two-section fluidized bed to reactor and the reactor includes the upper section chloridizing reactor and the lower section oxidizing reactor. By means of the process and equipment, the reactor has two dense phase areas in the axial height and this creates condition for the process needing temperature distribution or density distribution. In addition, limiting the axial backmixing of gas can raise the gas converting rate. The present invention has the advantages of short process flow, high conversion, high selectivity, low power consumption, easy control, etc.

Description

technical field [0001] The invention relates to a process and equipment for producing chlorine gas by catalytic oxidation of hydrogen chloride, belonging to the technical field of chemical process and equipment. Background technique [0002] In the chlor-alkali industry, chlorine and caustic soda are the two main products of the chlor-alkali industry, and the output of these two products is closely related. When the market demand for chlorine-containing products increases, the production of caustic soda will also increase. If the relationship between the two cannot be handled properly, the demand for chlorine and caustic soda will develop unbalanced, which will have a negative impact on the economic benefits and sustainable development of the chlor-alkali industry. At present, the demand for chlorine-containing products continues to grow. Simply relying on the development of the chlor-alkali industry to supplement the insufficient supply of chlorine will inevitably lead to ...

Claims

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Application Information

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IPC IPC(8): B01J8/24C01B7/04
Inventor 韩明汉魏飞金涌黄华章舒文晓吴玉龙王伦伟
Owner JUHUA GRP
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