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Catalyst and its preparation method and application in absorption of VOCS

A technology of catalysts and adsorbents, applied in biochemical equipment and methods, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of low waste gas treatment efficiency and achieve high degradation efficiency and good treatment effect

Inactive Publication Date: 2017-10-03
SCI RES ACADEMY OF GUANGXI ENVIRONMENTAL PROTECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a catalyst, a preparation method and its application in absorbing VOCS to solve the problem that the prior art generally uses activated sludge from sewage treatment plants as bacteria, and the bacteria have low treatment efficiency for waste gas containing VOCs

Method used

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  • Catalyst and its preparation method and application in absorption of VOCS
  • Catalyst and its preparation method and application in absorption of VOCS
  • Catalyst and its preparation method and application in absorption of VOCS

Examples

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preparation example Construction

[0029] The preparation method of described synthetic adsorbent comprises the following steps:

[0030] (a) analyzing the element content in the blast furnace slag by X-ray fluorescence spectrometry, and calculating the ratio of Mg / (Mn+Si) to 0.05-0.09 and the ratio of Mn / (Mn+Si) to 0.187-0.213 through the element content;

[0031] (b) Adjust blast furnace slag Mg / (Mn+Si) ratio and Mn / (Mn+Si) ratio, add MgO and SiO to 1g blast furnace slag 2 Adjust the Mg / (Mn+Si) ratio and the Mn / (Mn+Si) ratio to 0.83-0.85 and 0.142-0.148 respectively to prepare a mixture A;

[0032] (c) Add 32-35mL deionized water to the mixture A prepared in step b, and stir for 12-15min at a microwave power of 100-150W, a temperature of 30-35°C, and a rotation speed of 200-300r / min to obtain mixture B;

[0033] (d) Put the mixture B prepared in step c in a reaction kettle, react at 400-500°C for 4-6h to obtain a reaction product, wash the reaction product with deionized water, and dry it at 75-82°C until i...

Embodiment 1

[0042] Such as figure 1 Shown: a reaction system for absorbing VOCS, including an ultraviolet light treatment chamber 1, a circulating liquid device 2, and an absorption reaction tower 3. The ultraviolet light treatment chamber 1 is connected to the absorption reaction tower 3 through a pipeline A, and the circulation The liquid device 2 is connected to the top of the absorption reaction tower 3 through a pipe B, and the circulating liquid device 2 is connected to the bottom of the absorption reaction tower 3 through a pipe C.

[0043] The ultraviolet light treatment chamber 1 includes an air inlet 11 .

[0044] The circulating fluid device 2 includes a temperature sensor A 21 and a pH electrode 22 , the temperature sensor A 21 is arranged on the top of the circulating fluid device 2 , and the pH electrode 22 is arranged on the bottom of the circulating fluid device 2 .

[0045] The absorption reaction tower 3 includes a grid-type biofilm filler 31, a temperature sensor B 32,...

Embodiment 2

[0060] Such as figure 1 Shown: a reaction system for absorbing VOCS, including an ultraviolet light treatment chamber 1, a circulating liquid device 2, and an absorption reaction tower 3. The ultraviolet light treatment chamber 1 is connected to the absorption reaction tower 3 through a pipeline A, and the circulation The liquid device 2 is connected to the top of the absorption reaction tower 3 through a pipe B, and the circulating liquid device 2 is connected to the bottom of the absorption reaction tower 3 through a pipe C.

[0061] The ultraviolet light treatment chamber 1 includes an air inlet 11 .

[0062] The circulating fluid device 2 includes a temperature sensor A 21 and a pH electrode 22 , the temperature sensor A 21 is arranged on the top of the circulating fluid device 2 , and the pH electrode 22 is arranged on the bottom of the circulating fluid device 2 .

[0063] The absorption reaction tower 3 includes a grid-type biofilm filler 31, a temperature sensor B 32,...

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Abstract

The invention discloses a catalyst and its preparation method and application in absorption of VOCS. The preparation method of the catalyst comprises (1) immersing zeolite in deionized water, taking out the zeolite, boiling the zeolite in a sulfuric acid solution, washing the zeolite through deionized water until pH of 6.8-7.2 and drying the zeolite through an oven, (2) preparing a solution A and a solution B, adjusting pH of the solutions, slowly adding the solution B into the solution A drop by drop, controlling the temperature, carrying out stirring in dark, and carrying out standing in air until solution viscosity is in a range of 4.2-5.8 mPa.s to obtain sol, and (3) putting the sol into a spray gun, uniformly injecting the sol to the surface of the zeolite under driving of compressed air, carrying out standing to obtain a uniform gel film, carrying out drying and cooling to the room temperature, and carrying out roasting through a muffle furnace to obtain a catalyst. In treatment on VOCs-containing waste gas, the catalyst has good VOCs treatment effects and has high degradation efficiency.

Description

【Technical field】 [0001] The invention belongs to the technical field of VOCs treatment, and in particular relates to a catalyst, a preparation method and its application in absorbing VOCs. 【Background technique】 [0002] Volatile organic compounds, the English name is volatile organic compounds, abbreviated as VOCs. In my country, it refers to organic compounds with a saturated vapor pressure greater than 70Pa at normal temperature and a boiling point below 260°C at normal pressure, or a vapor pressure greater than or equal to 20°C. 10Pa has all organic compounds with corresponding volatility. The most common VOCs are benzene, toluene, xylene, styrene, trichloroethylene, chloroform, trichloroethane, diisocyanate, etc. [0003] VOCs are atmospheric pollutants, which use the air as the medium of transmission, and have toxic effects on the human body through the respiratory system and skin. At present, the main methods of controlling VOCs are physical method, chemical method ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/135B01J20/20B01D53/84B01D53/86C12N1/20C12N1/14C12R1/01C12R1/07C12R1/20C12R1/785C12R1/365C12R1/79C12R1/645
CPCB01D53/84B01D53/8668B01D2251/95B01D2257/7027B01D2257/708B01J20/18B01J20/20B01J27/135B01J2220/4887C12N1/14C12N1/20Y02A50/20
Inventor 莫招育陈志明毛敬英李宏姣黄炯丽张达标杨俊超
Owner SCI RES ACADEMY OF GUANGXI ENVIRONMENTAL PROTECTION
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