Treatment and treater for destroying oxygen gas

A treatment device and treatment method technology, applied in separation methods, chemical instruments and methods, dispersed particle separation, etc., can solve the problems of ozone-destroying gas treatment methods and devices, activated carbon catalysts are flammable, etc., to achieve high efficiency ozone removal, operation Convenience, avoiding the effect of heating and burning

Inactive Publication Date: 2006-08-16
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the disadvantages of the prior art that using the pyrolysis method to destroy ozone is high in operating cost and easily causing tail gas leakage. When using catalytic decomposition method to destroy ozone, the catalyst is sensitive to moisture, easy to poison and fail, and easy to generate heat and burn. An economical and practical ozone-destroying gas treatment method and device that is economical, easy to replace and operate, has a significant effect on ozone treatment, and effectively solves the problem of flammability of activated carbon catalysts

Method used

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  • Treatment and treater for destroying oxygen gas
  • Treatment and treater for destroying oxygen gas

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Effect test

Embodiment 1

[0025] In this embodiment, the raw water of a reservoir in Shenzhen City, Guangdong Province in the south of my country is used for an ozone experiment to treat the tail gas of an ozone reaction device. Ozone operating conditions: ozone generator operating pressure = 0.7kgf / cm2 (0.07MPa); oxygen flow rate = 0.8Nm3 / h, the tail gas containing ozone concentration is 0.65ppm. Use the treatment method and the device for destroying ozone gas provided by the invention to handle tail gas, the catalyst in its device adopts activated carbon type catalyst and manganese dioxide type catalyst (MnO2, product number MD-9) produced in Japan, loading capacity ( weight ratio) is 2:1. After 7 months of continuous operation, the concentration of ozone tail gas after treatment is lower than 0.05ppm. It can be seen that after the treatment, the ozone is effectively removed and the safe discharge standard can be reached.

Embodiment 2

[0027] In this embodiment, indoor water distribution is used to carry out the ozone experiment, and the exhaust gas of the ozone reaction device is treated. Ozone operating conditions: ozone generator operating pressure = 0.7kgf / cm2 (0.07MPa); oxygen flow rate = 0.3Nm3 / h; the tail gas contains ozone concentration of 0.8ppm. Use the treatment method and device for destroying ozone gas provided by the invention to process tail gas, the catalyst in its device adopts activated carbon type catalyst and manganese dioxide type catalyst (MnO2, commodity number MD-9) that Japan produces, and the loading capacity is 1:1. Handling total flow greater than 2500m 3 The concentration of ozone tail gas after treatment is lower than 0.05ppm. It can be seen that after the treatment, the ozone is effectively removed and the safe discharge standard can be reached.

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Abstract

A process for destroying ozone gas contained in tail gas includes such steps as making the tail gas containing ozone flow through water retaining plate for removing water, stage-one catalytic decomposing by using MnO2 as catalyst, and stage-two catalytic decomposing by using activated carbon as catalyst to decrease the content of ozone to 0.1 ppm or less. Its apparatus is also disclosed.

Description

technical field [0001] The present invention relates to a treatment method and device for ozone-destroying gas. Background technique [0002] With the wide application of ozone technology in various fields, after the effective decomposition and destruction of ozone gas, the issue of safe discharge has attracted increasing attention. Generally speaking, the tail gas concentration of most commonly used ozone reaction devices is low, and only in some specific cases, the concentration of ozone gas is high, and all of them need to be treated before they can meet the emission standards. [0003] At present, there are mainly two methods of high temperature destruction and catalytic decomposition to destroy ozone gas at home and abroad. The high-temperature destruction method mainly utilizes the principle that ozone is easily destroyed at high temperature (>350°C). According to USEPA's report, the high-temperature ozone-destroying system designed by it can reduce the ozone conc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/66
Inventor 杨敏郭召海张昱裴义山于建伟
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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