Three-phase catalytic deodorization process for RTO emission exhaust

A three-phase, tail gas technology, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, organic compound/hydride/coordination complex catalysts, etc., can solve problems such as odor pollution, To achieve the effect of efficient degradation, low cost and simple operation

Pending Publication Date: 2017-07-28
NJTECH ENVIRONMENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a high-efficiency and low-cost tail gas purification technology for the problem of odor pollution that may be generated during the operation of the current RTO technology

Method used

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  • Three-phase catalytic deodorization process for RTO emission exhaust

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Effect test

Embodiment 1

[0028] A three-phase catalytic deodorization system for RTO exhaust gas, including a flue gas cooling tower, a three-phase catalytic deodorization device and connecting pipes; the three-phase catalytic deodorization device is mainly composed of an ozone generator 1, a main reaction tower 2, a circulation pump 3 and Composed of connecting pipes and valves; the bottom of the main reaction tower 2 is a liquid storage tank 4, and the ozone generator 1 is connected to the liquid storage tank 4 at the bottom of the main reaction tower through pipes; the flue gas inlet of the main reaction tower 2 is set in the liquid storage tank 4 above; the middle part of the main reaction tower is a catalytic reaction zone 5 filled with solid-phase catalyst, and a spray device 6 is arranged directly above the top of the main reaction tower, and the liquid inlet of the spray device is connected with the liquid storage tank through a circulating pump 3 and a pipeline; The top side of the reaction to...

Embodiment 2

[0033] Weigh 10 g of high molecular weight polyferric salt, place in a certain amount of deionized water, stir and sonicate for 20 minutes. Then add 1.8755g manganese acetate dissolved in the above solution and keep stirring, then slowly add 10molKMnO 4 solution, the temperature was controlled at 75°C for 45 minutes. After the reaction is completed, filter, wash repeatedly with deionized water for 5-6 times, and then put it into a vacuum oven for drying to obtain MnO with a mass fraction of 10%. 2 / High molecular polymer iron salt catalyst.

Embodiment 3

[0035] Weigh 2.5gFeCl 3 , add deionized water to dissolve, 7.5gAl 2 o 3 Powder (through 60 mesh sieve) add FeCl 3The solution was stirred for 8 small tests, and the solution was evaporated to dryness in a water bath at 85°C, and then put into a vacuum drying oven to dry at 120°C for 12 hours. After grinding, put it into a muffle furnace and bake it at 600°C for 6 hours to make Fe / Al 2 o 3 . Then load Mn by co-precipitation method: Weigh Fe / Al with a mass ratio of 3:4 2 o 3 and manganese acetate, add deionized water to dissolve, and stir for 18 hours. Then slowly add concentrated ammonia water during continuous stirring until the pH of the solution is 12, stir for 1.5 hours, and then filter with suction. Then put it into a vacuum drying oven to dry at 120°C for 12h. Grind after drying, put it into a muffle furnace and bake at 550°C for 4 hours to obtain Fe-Mn / Al 2 o 3 Catalyst, where Fe loading is 2% and Mn loading is 1%.

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Abstract

The invention relates to the field of exhaust treatment and relates to a three-phase catalytic deodorization process for RTO emission exhaust. The method is as follows: gas obtained after RTO is burn passes through a flue gas cooling tower and a three-phase catalytic deodorization device to achieve the effect of purifying the exhaust, wherein the flue gas cooling tower can be used for reducing the temperature of the gas while removing acid gas in the exhaust so as to ensure that subsequent devices can continuously and stably operate. The three-phase catalytic deodorization device is used for performing coupling catalysis gas, liquid, solid phases to degrade odor matters in the exhaust to achieve deodorization effect. The method has the advantages of being easy to operate, low in processing cost, small in device investment, and the like.

Description

technical field [0001] The invention belongs to the field of exhaust gas treatment, and relates to a three-phase catalytic deodorization process for RTO exhaust tail gas. Background technique [0002] In recent years, with the continuous improvement of environmental protection requirements for volatile organic compounds (VOCs) emissions, regenerative incinerator (RTO) technology has become more and more common in organic waste gas treatment. It is widely used in industries such as paint and coating production. As a high-efficiency organic waste gas treatment technology, RTO provides an effective method for organic waste gas treatment, and opens a new chapter for the treatment of organic waste gas in chemical, pharmaceutical and other production enterprises. [0003] Compared with traditional catalytic combustion (RCO) and direct-fired thermal oxidation furnace (TO), RTO has the characteristics of high thermal efficiency and can handle low-concentration waste gas with large ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/86B01D53/76B01D53/78B01J23/889B01J31/32
CPCB01D53/76B01D53/78B01D53/86B01J23/8892B01J31/32B01D2258/0291
Inventor 沈丽娜李溪王祥
Owner NJTECH ENVIRONMENT TECH CO LTD
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