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Synthetic adsorbent and preparation method and application thereof to degradation of VOCs

A technology of adsorbents and mixtures, applied in separation methods, chemical instruments and methods, silicon compounds, etc., can solve the problems of low efficiency of VOCs degradation, and achieve the effect of promoting the degradation of VOCs, high degradation efficiency, and good treatment effect

Inactive Publication Date: 2017-09-22
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 synthetic adsorbent, a preparation method and its application in degrading VOCs, so as to solve the problem of low efficiency of the existing adsorbents in degrading VOCs

Method used

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  • Synthetic adsorbent and preparation method and application thereof to degradation of VOCs
  • Synthetic adsorbent and preparation method and application thereof to degradation of VOCs
  • Synthetic adsorbent and preparation method and application thereof to degradation of VOCs

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preparation example Construction

[0035] The preparation method of the catalyst includes the following steps:

[0036] (1) Soak the zeolite with a particle size of 0.03-0.2cm in deionized water for 0.7-1h, take it out and put it in a 6%-10% sulfuric acid solution, boil it for 0.4-0.8h, and then wash it with deionized water , Until the pH is 6.8-7.2, place in an oven at 85-88℃ to dry for 1.5-1.8h, and cool for later use;

[0037] (2) Add 18-30 mL of tin tetrabromide solution dropwise to 3-3.5 times absolute ethanol at a rate of 1 drop / s, and stir at a speed of 300-500r / min during the dropping process to prepare liquid A ; Take 2-4 mL of a palladium salt solution with a mass concentration of 0.2%-0.6% and add it dropwise to 5-12 mL of absolute ethanol at a rate of 1-2 drops / s to prepare solution B, and adjust the pH of the solution to 1.2-2.4 ; At a speed of 350-450r / min and a temperature of 42-46℃, slowly add liquid B to liquid A at a rate of 1 drop / 2-4 seconds, and control the temperature to 42-46℃. Continue to s...

Embodiment 1

[0049] Such as figure 1 Shown: a system for degrading VOCs, including an oscillating high-pressure device 1, a filter tank 2, a bacteria-fungi compound reaction tank 3, the oscillating high-pressure device 1 and the filter tank 2 are connected by a pipe A, the The filter tank 2 is connected to the bacteria-fungus composite reaction tank 3 through a pipe B. The oscillating high-pressure device 1 includes an oscillating high-pressure device inlet 11 and a nickel-hydrogen battery 12, and the filter material in the filter pool 2 contains Activated carbon, synthetic adsorbent, catalyst, the mass ratio of the activated carbon, synthetic adsorbent, and catalyst is 26:3:1, the bacteria-fungi composite reaction tank 3 includes a mobile phase chamber 31 and an air outlet 32, the flow The number of phase chambers 31 is 4. The adjacent mobile phase chambers are separated by partitions 311 and form an inlet 3111 and an outlet 3112. Each mobile phase chamber is provided with a temperature pr...

Embodiment 2

[0070] Such as figure 1 Shown: a system for degrading VOCs, including an oscillating high-pressure device 1, a filter tank 2, a bacteria-fungus composite reaction tank 3, the oscillating high-pressure device 1 and the filter tank 2 are connected by a pipe A, the The filter tank 2 is connected with the bacteria-fungus composite reaction tank 3 through a pipe B. The oscillating high-pressure device 1 includes an oscillating high-pressure device inlet 11 and a nickel-hydrogen battery 12, and the filter material in the filter pool 2 contains Activated carbon, synthetic adsorbent, and catalyst. The mass ratio of the activated carbon, synthetic adsorbent and catalyst is 18:2:1. The bacteria-fungi composite reaction tank 3 includes a mobile phase chamber 31 and an air outlet 32. The number of phase chambers 31 is 4. The adjacent mobile phase chambers are separated by a partition 311 and form an inlet 3111 and an outlet 3112. Each mobile phase chamber is provided with a temperature pro...

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Abstract

The invention discloses a synthetic adsorbent and a preparation method and application thereof to degradation of VOCs. The preparation method of the synthetic adsorbent comprises the following steps: (a) analyzing the contents of elements in blast furnace slag, and calculating the specific value of Mg / (Mn+Si) and the specific value of Mn / (Mn+Si); (b)adding MgO and SiO2 into 1 g of the blast furnace slag to adjust the specific value of Mg / (Mn+Si) and the specific value of Mn / (Mn+Si) to prepare a mixture A; (c) adding deionized water into the mixture A prepared in the step b, and performing stirring under the microwave action to prepare a mixture B; and (d) placing the mixture B prepared in the step c into a reaction kettle to be subjected to heating reaction, then washing the product with deionized water, and performing drying to prepare the synthetic adsorbent. When the synthetic adsorbent is adopted to degrade exhaust gas of VOCs, the VOCs treatment effect is good and the degradation efficiency is high.

Description

【Technical Field】 [0001] The invention belongs to the technical field of VOCs treatment, and particularly relates to a synthetic adsorbent, a preparation method and its application in degrading 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 saturated vapor pressure greater than 70Pa at normal temperature and boiling point below 260°C at normal pressure, or vapor pressure greater than or equal to 20°C All organic compounds with corresponding volatility at 10Pa. The most common VOCs are benzene, toluene, xylene, styrene, trichloroethylene, chloroform, trichloroethane, diisocyanate, etc. [0003] VOCs are atmospheric pollutants. They use air as a transmission medium to produce toxic effects on the human body through the respiratory system and skin. At present, the main methods of controlling VOCs are physical, chemical and biological methods. Amo...

Claims

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Application Information

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IPC IPC(8): B01J20/10B01J20/30B01D53/72B01D53/81
CPCB01D53/72B01D2257/708B01D2259/128B01J20/041B01J20/06B01J20/103
Inventor 陈志明莫招育黄炯丽李宏姣张达标杨俊超刘慧琳
Owner SCI RES ACADEMY OF GUANGXI ENVIRONMENTAL PROTECTION
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