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System and method for preparing chlorine dioxide

A technology of chlorine dioxide gas and chlorine dioxide, which is applied in the direction of chlorine oxidation, can solve problems affecting production safety, high preparation costs, equipment damage, etc., and achieve the effects of enhanced safety, easy operation and stable operation

Active Publication Date: 2014-12-24
SHENZHEN OUTAIHUA ENG EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the biggest defect of this method is that the preparation cost is high, and, in design or in use, due to factors such as design and improper operation, explosions will be caused, resulting in equipment damage, which directly affects the safety of production.

Method used

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  • System and method for preparing chlorine dioxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] like figure 1 As shown, a chlorine dioxide gas preparation system includes a control cabinet, a mixer 10, a gas generator 1 and an air extractor 7; the gas generator 1 is a rotary type, and the inlet end of the gas generator 1 is in phase with the outlet of the mixer 10 The outlet end of the gas generator is connected with the inlet of the air extractor 7 through the gas outlet pipe 6; the outlet end of the gas generator is provided with a water inlet pipe 4 and a pressure sensor 5; the pressure sensor is connected with the control cabinet.

[0031] The above scheme has been able to complete the preparation of high-purity chlorine dioxide gas, and on this basis, the preferred scheme is given:

[0032] The gas generator 1 includes a first horizontal pipe 11, a second horizontal pipe 12, a first vertical pipe 13, a second vertical pipe 14 and a third vertical pipe 15; the top of the first vertical pipe 13 and the third vertical pipe The top end of the pipeline 15 is conn...

Embodiment 2

[0034] A method for preparing high-purity chlorine dioxide gas using the chlorine dioxide gas preparation system of Example 1, comprising the following steps:

[0035] A. Pre-treat the feed liquid and the gas generator: first fill the gas generator 1 with clean water through the water inlet pipe 4, and then add a sodium chlorite solution with a mass fraction of 8% and a sodium chlorite solution with a mass fraction of 8-9% The hydrochloric acid solution is injected into the static mixer 10 through the sodium chlorite solution delivery pipe 8 and the hydrochloric acid solution delivery pipe 9 in a molar ratio of 1:2.4 to 1:2.75, and premixed in the static mixer 10;

[0036] B, the feed liquid is premixed in the static mixer 10 and injected into the gas generator 1 from the inlet end of the gas generator 1, wherein the reaction produces chlorine dioxide gas, and the reaction temperature of the feed liquid in the gas generator 1 is Normal temperature, the reaction time is 0.4 ~ 0...

Embodiment 3

[0040] A method for preparing high-purity chlorine dioxide gas using the chlorine dioxide gas preparation system of embodiment 1, comprising the steps of:

[0041] A. Pretreat the feed liquid and the gas generator: first fill the gas generator 1 with clean water through the water inlet pipe 4, and then fill the gas generator 1 with 8% sodium chlorite solution and 8% hydrochloric acid solution Inject the static mixer 10 through the sodium chlorite solution delivery pipe 8 and the hydrochloric acid solution delivery pipe 9 according to the molar ratio of 1:2.42, and pre-mix in the static mixer 10;

[0042] B. After the feed liquid is mixed in the static mixer 10, it is injected into the gas generator 1 from the inlet end of the gas generator 1, where it reacts to generate chlorine dioxide gas, and the reaction temperature of the feed liquid in the gas generator 1 is normal temperature , the reaction time is 0.4h; Then chlorine dioxide gas and the reacted feed liquid are extracte...

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Abstract

The invention discloses a system for preparing chlorine dioxide. The system comprises a control cabinet, a mixer (10), a gas generator (1) and a gas extractor (7), wherein the gas generator (1) is rotary, an inlet end of the gas generator (1) is connected with an outlet of the mixer (10), and an outlet end of the gas generator (1) is connected with an inlet of the gas extractor (7) through a gas outlet pipe (6); a water inlet pipe (4) and a pressure sensor (5) are arranged on the outlet end of the gas generator (1); the pressure sensor (5) is connected with the control cabinet. The invention further discloses a method for preparing the chlorine dioxide. The system for preparing the chlorine dioxide, which is disclosed by the invention, is simple and convenient to operate, has high safety, and runs stably.

Description

technical field [0001] The invention relates to a gas preparation system and a preparation method thereof, in particular to a chlorine dioxide gas preparation system and a preparation method thereof. Background technique [0002] In my country, the research and development of chlorine dioxide gas generators has been carried out since the 1980s, and it has been more than 20 years. The research and development of chlorine dioxide gas generators has been carried out from the beginning for the preparation method of mixed chlorine dioxide gas. Therefore, most of the chlorine dioxide gas generators on the market are still based on mixed chlorine dioxide gas generators. host. However, with the development of the economy and the continuous improvement of environmental protection requirements, high-purity chlorine dioxide gas generators have sterilized and disinfected many water bodies, especially those with special requirements, such as water treatment for cyanide removal, nickel r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B11/02
Inventor 石杨陈祥衡崔永顺卫志兵李道红
Owner SHENZHEN OUTAIHUA ENG EQUIP
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