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Production device for preparing ultra-pure zirconium oxychloride byproduct silicon tetrachloride by fluidizing chlorination of zircon sand

A technology of ultra-pure zirconium oxychloride and by-product silicon tetrachloride, which is applied in the direction of zirconium halide, chlorine/hydrogen chloride, silicon halide compounds, etc., can solve problems such as waste of resources, explosion, and increased consumption of raw materials, and achieve improved plant production capacity, save fossil resources, and reduce production costs

Active Publication Date: 2016-05-04
山东广通新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Not only is it a waste of resources, but also there are safety hazards such as CO combustion, explosion, and poisoning
[0016] 3. CO produced by CO combustion enthalpy 2 , CO 2 It is the main greenhouse gas, which will intensify the greenhouse effect of the atmosphere, lead to global warming, and cause natural disasters, which seriously threaten the survival and development of human beings.
[0017] 4. In the prior art, Cl 2 As the main raw material of the chlorination reaction, due to the lack of recovery and recycling, the consumption of raw materials increases and the production cost of products increases.
[0018] 5. In the prior art, Cl 2 As the main raw material for the chlorination reaction, since there is no recovery and recycling, zircon sand and Cl 2 The molar ratio of zircon sand can only be maintained at about 1:6, which limits the reaction speed of zircon sand chlorination reaction
Affected the improvement of the production capacity of the device

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] A production device for preparing ultra-pure zirconium oxychloride by-product silicon tetrachloride by boiling chlorination of zircon sand of the present invention comprises the following steps:

[0075] ①. Chlorination of zircon sand

[0076] First, crush the quartz sand to 300-350 mesh fine powder, mix it with 150-180 mesh petroleum coke and catalyst boron oxide according to the ratio of 100:20-23:0.4-0.5, and add it to the boiling chlorination furnace for chlorination reaction , the molar ratio of zircon sand to chlorine gas is 1:8, the reaction temperature is 950-1100°C, and the chlorine flow rate is controlled to be 1.0-1.5m 3 / h;

[0077] ②. Separation and collection of zirconium tetrachloride

[0078] The gas product from step ① is cooled by a multi-stage condenser, the temperature of the cooled material reaches 210-230°C, and enters the cyclone gas-solid separator for gas-solid separation. When the outlet temperature is controlled at 100-110°C, tetrachloride i...

Embodiment 2

[0093] A production device for preparing ultra-pure zirconium oxychloride by-product silicon tetrachloride by boiling chlorination of zircon sand of the present invention comprises the following steps:

[0094] ①. Chlorination of zircon sand

[0095] First, crush the quartz sand to 300-350 mesh fine powder, mix it with 150-180 mesh petroleum coke and catalyst boron oxide according to the ratio of 100:20-23:0.4-0.5, and add it to the boiling chlorination furnace for chlorination reaction , the molar ratio of zircon sand to chlorine gas is 1:9, the reaction temperature is 950-1100°C, and the chlorine flow rate is controlled to be 1.0-1.5m 3 / h;

[0096] ②. Separation and collection of zirconium tetrachloride

[0097] The gas product from step ① is cooled by a multi-stage condenser, the temperature of the cooled material reaches 210-230°C, and enters the cyclone gas-solid separator for gas-solid separation. When the outlet temperature is controlled at 100-110°C, tetrachloride i...

Embodiment 3

[0112] A production device for preparing ultra-pure zirconium oxychloride by-product silicon tetrachloride by boiling chlorination of zircon sand of the present invention comprises the following steps:

[0113] ①. Chlorination of zircon sand

[0114] First, crush the quartz sand to 300-350 mesh fine powder, mix it with 150-180 mesh petroleum coke and catalyst boron oxide according to the ratio of 100:20-23:0.4-0.5, and add it to the boiling chlorination furnace for chlorination reaction , the molar ratio of zircon sand to chlorine gas is 1:10, the reaction temperature is 950-1100°C, and the chlorine flow rate is controlled to be 1.0-1.5m 3 / h;

[0115] ②. Separation and collection of zirconium tetrachloride

[0116] The gas product from step ① is cooled by a multi-stage condenser, the temperature of the cooled material reaches 210-230°C, and enters the cyclone gas-solid separator for gas-solid separation. When the outlet temperature is controlled at 100-110°C, tetrachloride ...

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PUM

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Abstract

The invention relates to a production device for preparing ultra-pure zirconium oxychloride byproduct silicon tetrachloride by fluidizing chlorination of zircon sand, belonging to a preparation method of zirconium halogenide. The production device comprises a zircon sand fluidizing chlorination system, a silicon tetrachloride condensation collection system, a silicon tetrachloride rectifying system and a silicon tetrachloride hydrolyzed ultra-pure zirconium oxychloride preparation system. The production device is characterized by also comprising a tail gas recycling system; the tail gas recycling system comprises a tail gas storage device, a chlorine gas separation recycling device and a CO recycling storage device; firstly, the chlorine gas in the tail gas is separated and collected to be used as a raw material for fluidizing chlorination of the zircon sand and to be recycled; and the tail gas after the chlorine gas is separated is used as a raw material of an industrial production device involved in the synthesis reaction participated by CO. By adopting the production device, the Cl2 and CO resources can be efficiently utilized, and the emission of the greenhouse gas CO2 is reduced; and the production cost of products of the zircon sand fluidizing chlorination device can be reduced, and the production capacity of the device can be improved.

Description

technical field [0001] The invention is a production device for preparing ultra-pure zirconium oxychloride by-product silicon tetrachloride by boiling chlorination of zircon sand. A process for the preparation of zirconium halides. Background technique [0002] Zircon sand is zircon (ZrSiO) obtained by processing and beneficiating zircon minerals. 4 ) concentrate, its theoretical composition is: ZrO 2 Content is 67.21%, SiO 2 The content is 32.79%. Zircon sand is the main raw material for the production of metal zirconium and its chemical products. For the preparation of silicon tetrachloride, zirconium oxychloride and zirconium dioxide. [0003] Zirconium oxychloride (ZrOCl 2 ·8H 2 O) is an important zirconium chemical, and is the basic raw material for the preparation of metal zirconium, zirconium dioxide, many zirconium salts and other zirconium compounds. It can be used as paint drying agent, rubber additive, refractory material, ceramic pigment, lubricant; it is...

Claims

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Application Information

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IPC IPC(8): C01G25/04C01B33/107C01B7/01C01B31/18C01B32/40
CPCC01B7/01C01B33/1071C01G25/04
Inventor 郝本清毕明亮
Owner 山东广通新材料有限公司
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