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Waste gas treatment process

A waste gas treatment and process technology, applied in the direction of gas treatment, air quality improvement, combustion method, etc., can solve the problems of large area occupied by the device, large amount of fuel, high operating cost, etc., and achieve small occupied area, low price and easy operation low cost effect

Inactive Publication Date: 2017-06-09
周子童
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method requires more fuel. Taking the treatment of 20,000 tons of n-butane maleic anhydride waste gas as an example, it needs to consume more than 1,600 cubic meters of natural gas per hour, so the operating cost is relatively high
[0003] In addition, since the exhaust gas preheating device, exhaust gas incineration device, and flue gas cooling device in the catalytic incineration process and thermal incineration process are completed by a single device, the devices are connected by many pipes, and the device occupies a large area

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Prepare ten regenerators first, and heat the regenerators to the operating state. Regenerators are installed in all ten regenerator chambers. The regenerator is a ceramic product with vertical holes evenly distributed on it so that the regenerator forms a honeycomb shape; after that, the waste gas with a temperature of 30°C and a pressure of 11000Pa is evenly sent to the five accumulators through a gas distributor. The heat chamber uses the exhaust gas to absorb the heat stored in the heat storage ceramics in the five regenerators, and heats the exhaust gas to the temperature of the decomposition point of organic matter in the exhaust gas at 650°C; then sends the exhaust gas heated by the heat storage body to a temperature of 800°C The thermal oxidation chamber is incinerated for 1 second, so that the organic matter in the exhaust gas undergoes oxidative decomposition reaction, and the organic matter is converted into carbon dioxide and water vapor, and becomes harmless...

Embodiment 2

[0019] Prepare ten regenerators first, and heat the regenerators to the operating state. Regenerators are installed in all ten regenerator chambers. The regenerator is a ceramic product with vertical holes evenly distributed on it so that the regenerator forms a honeycomb shape; then the exhaust gas with a temperature of 30°C and a pressure of 12000Pa is evenly sent into five regenerators through a gas distributor , the maleic anhydride waste gas is used to absorb the heat stored in the regenerative ceramics in the five regenerators, and the temperature of the maleic anhydride waste gas is heated to the decomposition point temperature of organic matter in the waste gas at 720°C; Incinerate in a thermal oxidation chamber at 850°C for 3 seconds to oxidize and decompose the organic matter in the exhaust gas, transform the organic matter into carbon dioxide and water vapor, and become harmless high-temperature flue gas; then send part of the above-mentioned high-temperature flue g...

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PUM

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Abstract

The invention relates to a waste gas treatment process, which is characterized by sequentially comprising the following steps of heating heat storage chambers; uniformly conveying waste gas into the partial heat storage chambers through a gas distributor; heating the waste gas to the temperature of the decomposing point temperature of organic maters (benzene, n-butane and carbonic oxide) in the waste gas; conveying waste gas heated by a heat storage body into a heat oxidization chamber to be burnt so that the organic matters are converted into carbon dioxide and water vapor to become harmless high-temperature smoke gas; conveying one part of the high-temperature smoke gas into the rest heat storage chambers to perform heat exchange with the heat storage body so that the high-temperature smoke gas is cooled and the cooled smoke gas is exhausted into the atmosphere; conveying the rest high-temperature smoke gas into an afterheat recovery device; recovering the heat energy so that the high-temperature smoke gas entering the afterheat recovery device is cooled to become low-temperature smoke gas reaching the exhaust requirements; performing back flowing, dust removal and the like on each heat storage chamber in turns, and the like. By using the process, the one-time investment and the operation cost can be reduced; the atmospheric pollution is reduced. The process is applicable to the heat storage oxidization treatment on the waste gas exhausted in the maleic anhydride production process.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a method for treating organic waste gas. Background technique [0002] At present, in the waste gas production industry, the following three methods are mainly used for the treatment of waste gas generated in the production process, one is water absorption method, the other is catalytic incineration method, and the third is thermal incineration method. The water absorption method is to perform water absorption treatment on the maleic anhydride waste gas in the last process of maleic anhydride production, because the maleic anhydride waste gas contains benzene, and benzene is difficult to dissolve in water. Therefore, the effect of treating maleic anhydride waste gas with this method is relatively poor. The catalytic incineration method is to preheat the maleic anhydride waste gas to the light-off temperature of the catalyst. After preheating, the waste gas enter...

Claims

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Application Information

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IPC IPC(8): B01D53/74B01D53/62B01D53/72F23G7/06
CPCB01D53/74B01D2257/502B01D2257/7022B01D2257/7027B01D2258/02B01D2259/655F23G7/061Y02A50/20
Inventor 周子童
Owner 周子童
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