Device for preparing cerium-based catalyst

A cerium-based catalyst and reaction chamber technology, applied in catalyst activation/preparation, physical/chemical process catalyst, metal/metal oxide/metal hydroxide catalyst, etc., can solve the problem of limited dioxin emission reduction effect and complicated operation , high price and other problems, to achieve excellent redox ability, low price, and the effect of promoting preparation

Inactive Publication Date: 2018-07-31
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this application is that it needs to use expensive titanium dioxide (20,000 / ton) and tungsten trioxide (150,000 / ton)
The disadvantage of this application is that it needs to go through multiple mixing processes, and the operation is complicated. Although it can reduce the dioxin content in the flue gas, the effect on dioxin emission reduction is limited.

Method used

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  • Device for preparing cerium-based catalyst
  • Device for preparing cerium-based catalyst
  • Device for preparing cerium-based catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Such as figure 2 and image 3 As shown, a device for preparing a cerium-based catalyst in this embodiment includes a reaction chamber 100 and an oxalic acid pool 200. The upper part of the reaction chamber 100 is provided with an oxalic acid pool 200, and the oxalic acid pool 200 is provided with an electromagnetic stirring mechanism 201 and The mechanical stirrer 202 ; the electromagnetic stirring mechanism 201 and the mechanical stirrer 202 are used to stir the oxalic acid solution in the oxalic acid pool 200 .

[0044] An oxalic acid dropper 210 is arranged under the oxalic acid pool 200, and a telescopic support arm 152 is provided on the top of the reaction chamber 100. The telescopic support arm 152 is connected to the top of the reaction chamber 100 by rotating the support rod 151. Holding mechanism 153, the holding mechanism 153 is used to hold the oxalic acid dropper 210, the oxalic acid dropper 210 is fixed on the upper part of the reaction chamber 100 by th...

Embodiment 2

[0052] In this embodiment, the method for producing the catalyst using the above-mentioned cerium-based catalyst production system for synergistically removing dioxins and nitrogen oxides is as follows: add ferrous sulfate, manganese chloride, cerium nitrate and water into the mixing device 10, Mix to obtain the catalyst active component solution; then transfer the catalyst active component solution to the reaction chamber 100 of the preparation device 20, and cool the catalyst active component solution to 0-5°C in the ice water bath 110 outside the reaction chamber 100, and then The oxalic acid solution in the oxalic acid pool 200 is added to the catalyst active component solution through the oxalic acid dropper 210, the reaction chamber 100 mixes and reacts during the stirring process to form a precipitate, and the precipitate is filtered, washed, and dried, and then added to the roasting device 30 for further processing. Roasting, the catalyst is prepared after calcination. ...

Embodiment 3

[0063]The basic content of this embodiment is the same as that of Embodiment 2, except that in step 400, during the preparation of the catalyst, additives are added to the calcined product, and then the mixture of the calcined product and the additive is added to the grinding device 40 for grinding , wherein the additives include potassium permanganate or potassium manganate, potassium permanganate or potassium manganate can decompose oxygen and manganese oxide under heating conditions, oxygen is beneficial to the catalytic effect, and manganese oxide is beneficial to supplement the consumption of catalyst manganese.

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Abstract

The invention discloses a device for preparing a cerium-based catalyst and belongs to the technical field of sintering flue gas treatment. The device provided by the invention comprises a reaction chamber and an oxalic acid pool, wherein the oxalic acid pool is arranged in an upper part of the reaction chamber; an oxalic acid dropper is arranged below the oxalic acid pool; the oxalic acid dropperis used for dropping an oxalic acid solution into the reaction chamber; heating and insulating components are arranged outside the oxalic acid pool and the oxalic acid dropper; the heating and insulating components are used for heating and insulating the oxalic acid pool and the oxalic acid dropper; an ice-water bath pool is arranged outside the reaction chamber; the ice-water bath pool is used for water-bath cooling of the reaction chamber. The device provided by the invention ensures stability and performance of products, and also ensures that the dropped oxalic acid solution can be uniformly and rapidly mixed with a reaction solution; the prepared cerium-based catalyst improves removal efficiency of dioxin and nitrogen oxides.

Description

technical field [0001] The invention belongs to the technical field of sintering flue gas treatment, and relates to a device for preparing a cerium-based catalyst. Background technique [0002] Dioxins have strong carcinogenic and teratogenic effects. Because of their high toxicity, dioxins are extremely difficult to degrade in the environment, can be enriched through the food chain, have high fat solubility, and can be transported in the atmosphere for long distances to affect the regional and even global environment. Known as the "poison of the century". With the recognition of the hazards of dioxins in human society, the "Stockholm Convention on Persistent Organic Pollutants" came into effect globally on May 17, 2004. On June 25 of the same year, my country's tenth National People's The "Convention" was approved at the meeting and entered into force for China on November 11. [0003] Then in June 2012, China promulgated the "Steel Sintering and Pelletizing Industry Air P...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/18B01J19/00B01D53/86B01D53/56B01J23/889B01J37/08B01J35/10
CPCB01J19/18B01D53/8625B01D2258/0283B01J19/0066B01J23/002B01J23/889B01J35/1014B01J35/1038B01J35/1061B01J37/08
Inventor 龙红明张洪亮施琦余正伟王平春铁军孟庆民李安琪魏汝飞高志芳
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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