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Formula and preparation method of activated carbon adsorbent for formaldehyde and methane adsorption

An activated carbon adsorption and activated carbon technology, which is applied in the field of air purification, can solve the problems of secondary pollution of the environment, and achieve the effects of fast decomposition speed, strong catalytic oxidation ability, and improved penetration time.

Inactive Publication Date: 2019-01-29
TIANJIN PURUITE PURIFICATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main function of the existing activated carbon adsorbent is to adsorb the above-mentioned harmful substances. The activated carbon adsorbent partially loaded with metal oxides can only decompose a small part of harmful substances. After saturation, the adsorbed harmful gas will still be emitted, causing environmental pollution Secondary pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A formulation of an activated carbon adsorbent for adsorption of formaldehyde and methane, comprising in parts by weight:

[0049] 80 parts of modified activated carbon,

[0050] TiCl 3 30 parts of solution,

[0051] 20 parts of hydrochloric acid solution.

[0052] Preferably, in parts by weight, the raw materials of modified activated carbon include:

[0053] 200 parts of coconut shell activated carbon,

[0054] Coal-based activated carbon 200 parts,

[0055] 200 parts of wood activated carbon,

[0056] 20 parts of bentonite,

[0057] 5 parts coal tar

[0058] 50 parts of water.

[0059] Preferably, TiCl 3 The concentration is 0.5mol / L.

[0060] A kind of method for preparing formaldehyde, methane adsorption activated carbon adsorbent, concrete steps are as follows:

[0061] Step 1: Add deionized water to coconut shell activated carbon, coal-based activated carbon, and wood-based activated carbon and use ultrasonic waves for pretreatment, then wash with deio...

Embodiment 2

[0069] A formulation of an activated carbon adsorbent for adsorption of formaldehyde and methane, comprising in parts by weight:

[0070] 90 parts of modified activated carbon,

[0071] TiCl 3 40 parts of solution,

[0072] 50 parts of hydrochloric acid solution.

[0073] Preferably, in parts by weight, the raw materials of modified activated carbon include:

[0074] 400 parts of coconut shell activated carbon,

[0075] Coal-based activated carbon 400 parts,

[0076] 400 parts of wood activated carbon,

[0077] 60 parts of bentonite,

[0078] 30 parts of coal tar

[0079] 100 parts of water.

[0080] Preferably, TiCl 3 The concentration is 0.5mol / L.

[0081] A kind of method for preparing formaldehyde, methane adsorption activated carbon adsorbent, concrete steps are as follows:

[0082] Step 1: Add deionized water to coconut shell activated carbon, coal-based activated carbon, and wood-based activated carbon and use ultrasonic waves for pretreatment, then wash with d...

Embodiment 3

[0090] A formulation of an activated carbon adsorbent for adsorption of formaldehyde and methane, comprising in parts by weight:

[0091] 85 parts of modified activated carbon,

[0092] TiCl 3 35 parts of solution,

[0093] 25 parts of hydrochloric acid solution.

[0094] Preferably, in parts by weight, the raw materials of modified activated carbon include:

[0095] 300 parts of coconut shell activated carbon,

[0096] Coal-based activated carbon 300 parts,

[0097] 300 parts of wood activated carbon,

[0098] 50 parts of bentonite,

[0099] 10 parts coal tar

[0100] 60 parts of water.

[0101] Preferably, TiCl 3 The concentration is 0.5mol / L.

[0102] A kind of method for preparing formaldehyde, methane adsorption activated carbon adsorbent, concrete steps are as follows:

[0103] Step 1: Add deionized water to coconut shell activated carbon, coal-based activated carbon, and wood-based activated carbon and use ultrasonic waves for pretreatment, then wash with dei...

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Abstract

The invention provides a formula and preparation method of an activated carbon adsorbent for formaldehyde and methane adsorption. The formula comprises modified activated carbon, a TiCl3 solution anda hydrochloric acid solution, and the preparation method comprises the following specific steps: performing pretreatment with ultrasonic wave activated carbon, and performing water washing and drying;performing pulverizing and calcining on bentonite; grinding the bentonite and activated carbon, and performing drying; performing hydrothermal treatment in a mixed solution of the TiCl3 solution withthe hydrochloric acid solution, and performing washing, suction filtration and drying; and performing calcination, and reducing the temperature to room temperature so as to obtain the activated carbon adsorbent for formaldehyde and methane adsorption. Through the activated carbon adsorbent produced by using the method, the number and proportion of mesopores of activated carbon are increased, thepenetration time of the adsorbent is improved, high catalytic oxidation ability and faster decomposition speed of formaldehyde and methane are achieved, and no by-products with pollution to the environment are produced in the preparation process; and in addition, the adsorbent also has a certain adsorption-decomposing effect on multiple small-molecule organic substances.

Description

technical field [0001] The invention relates to the technical field of air purification, in particular to a formula and a preparation method of an activated carbon adsorbent for absorbing formaldehyde and methane. Background technique [0002] Formaldehyde has a huge impact on human health. Formaldehyde in the indoor environment will be released slowly. Some poor-quality building materials release formaldehyde pollutants for as long as two years. Long-term exposure to formaldehyde can cause chronic respiratory diseases, headaches, and memory loss. decline and other symptoms. The greenhouse effect of methane is more than 20 times that of carbon dioxide, and its destructive ability to the atmospheric ozone layer is 7 times that of carbon dioxide. The main function of the existing activated carbon adsorbent is to adsorb the above-mentioned harmful substances. The activated carbon adsorbent partially loaded with metal oxides can only decompose a small part of harmful substances...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30B01J21/18B01D53/86B01D53/72
CPCB01D53/8668B01D2253/102B01D2253/11B01D2253/1124B01D2255/20707B01D2257/7025B01D2257/708B01J20/06B01J20/12B01J20/20B01J21/18B01J2220/42B01J2220/4806B01J2220/4812Y02C20/20
Inventor 麦标龙仝雪城金凤琪张天喜
Owner TIANJIN PURUITE PURIFICATION TECH
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