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A kind of preparation device and preparation method of high-purity chlorine dioxide

A chlorine dioxide preparation device technology, applied in the direction of chlorine dioxide, chlorine oxide, etc., can solve problems affecting the purity of chlorine dioxide, low purity of chlorine dioxide, lack of solutions, etc., to reduce raw material costs and improve redox Potential, the effect of improving product conversion rate

Active Publication Date: 2019-04-23
QINGDAO JUCHUAN ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The gas in the blown bubbles is mixed into the chlorine dioxide, causing impurities to be mixed in the chlorine dioxide, which affects the purity of the prepared chlorine dioxide
Moreover, the setting of the microporous air distributor increases the cost of preparation
[0004] In summary, there is still a lack of effective solutions for the problems of the need for continuous heating, low purity and low yield of chlorine dioxide, and high investment costs in the preparation method of chlorine dioxide in the prior art.

Method used

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  • A kind of preparation device and preparation method of high-purity chlorine dioxide
  • A kind of preparation device and preparation method of high-purity chlorine dioxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] The volume ratio of the heating water tank 2 to the reaction box is 1:10, and the inclination angle between each inclined plate 9 and the horizontal direction is 68°. Enter medicine by following proportioning, sodium chlorate 35 weight parts, sucrose 5 weight parts, citric acid 2 weight parts, sulfuric acid 40 weight parts. Firstly sodium chlorate, sucrose, citric acid and water are made into compound sodium chlorate solution by 35:5:2:100, and sulfuric acid is made into dilute sulfuric acid with a mass fraction of 60%, with a total dosing speed of 7L / h into medicine. When the equipment is started, the feed temperature of the compound sodium chlorate solution is heated to 50°C, and after 30 minutes of feed, the temperature of the heating water tank 2 reaches about 55°C. Now the conversion rate of sodium chlorate is 95%, the output of chlorine dioxide is 2kg / h, and the purity of chlorine dioxide is 99%.

Embodiment 2

[0059] The volume ratio of the heating water tank 2 to the reaction box is 2:10, and the inclination angle between each inclined plate 9 and the horizontal direction is 70°. Enter medicine by following proportioning, sodium chlorate 25 weight parts, sucrose 8 weight parts, malic acid 5 weight parts, sulfuric acid 30 weight parts. Firstly sodium chlorate, sucrose, citric acid and water are made into compound sodium chlorate solution by 25:8:5:100, and sulfuric acid is made into dilute sulfuric acid with a mass fraction of 30%, with a total dosing speed of 8L / h into medicine. When the equipment is started, the feed temperature of the compound sodium chlorate solution is heated to 60°C, and after 30 minutes of feed, the temperature of the heating water tank 2 reaches about 65°C. Now the conversion rate of sodium chlorate is 97%, the output of chlorine dioxide is 2kg / h, and the purity of chlorine dioxide is 99.2%.

Embodiment 3

[0061] The volume ratio of the heating water tank 2 to the reaction box is 2:10, and the inclination angle between each inclined plate 9 and the horizontal direction is 72°. Enter medicine by following proportioning, sodium chlorate 10 weight parts, sucrose 5 weight parts, formic acid 2 weight parts, sulfuric acid 20 weight parts. First, sodium chlorate, sucrose, citric acid and water are made into a compound sodium chlorate solution at a ratio of 10:5:2:100, and sulfuric acid is made into dilute sulfuric acid with a mass fraction of 45%, with a total dosing speed of 8L / h into medicine. When the equipment is started, the feed temperature of the compound sodium chlorate solution is heated to 60°C, and after 30 minutes of feed, the temperature of the heating water tank 2 reaches about 62°C. Now the conversion rate of sodium chlorate is 94%, the output of chlorine dioxide is 1.9kg / h, and the purity of chlorine dioxide is 98.5%.

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Abstract

The invention discloses a preparation device and preparation method of high-purity chlorine dioxide. The preparation device comprises a heating device, a reaction tank body, at least two oblique plates and at least one gas collection hood, wherein a sample inlet and a liquid outlet are respectively formed in two opposite sides of the reaction tank body, and the liquid outlet is positioned at the bottom of the reaction tank body; nanosilver-loaded alpha-Al2O3 strips are inserted on the oblique plates, each oblique plate is obliquely arranged between the sample inlet and the liquid outlet and is approximately perpendicular to the flowing direction of a reaction liquid, the bottom surface and two side surfaces of each oblique plate and the reaction tank body are arranged in a sealing manner, the reaction tank body is divided into a plurality of reaction chambers, the upper end of the oblique plate is inclined towards the liquid outlet, and a set distance is preserved between the adjacent oblique plates; the gas collection hood is arranged on the upper end or the side wall of the reaction tank body and is used for collecting a reaction product gas; and the heating device is arranged on the upstream of the reaction tank body and is used for heating a reaction liquid entering in the reaction tank body.

Description

technical field [0001] The invention belongs to the technical field of water disinfection, and in particular relates to a preparation device and method for high-purity chlorine dioxide. Background technique [0002] As an efficient broad-spectrum disinfectant and oxidant, chlorine dioxide is widely used in many fields such as water supply disinfection, sewage treatment, pulp bleaching, food processing and animal husbandry. Because chlorine dioxide is difficult to transport and store over long distances, currently water plants use on-site production methods to produce chlorine dioxide. At present, common generation processes can be divided into "chlorite method" and "chlorate method" according to raw materials. ", although the "chlorite method" can easily obtain high-purity chlorine dioxide products through the reaction of acid and sodium chlorate, but because the price of chlorite is much higher than that of chlorate, the "chlorite method" is adopted The cost of chlorine di...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B11/02
CPCC01B11/023
Inventor 戈学珍吴明松
Owner QINGDAO JUCHUAN ENVIRONMENTAL PROTECTION TECH CO LTD
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