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Modified porous alumina formaldehyde adsorbent and preparation method thereof

A technology for porous alumina and formaldehyde adsorption, which is applied in chemical instruments and methods, separation methods, alkali metal oxides/hydroxides, etc., can solve the problems of environmental protection, release of ammonia odor, etc., and achieve energy saving in the preparation method Environmental protection, strong formaldehyde affinity, and the effect of capturing safe ingredients

Active Publication Date: 2018-12-28
芜湖格丰环保科技研究院有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method uses -NH, -NH 2 and -NH 3 Active = O bonding with formaldehyde to achieve the purpose of chemical adsorption to remove formaldehyde, but the ammonium carbonate, ammonium bicarbonate, ammonium sulfate, ammonium nitrate, ammonium chloride, ethylenediamine, hexamethylenediamine, aniline, urea active substance loading The rear material has the problem of releasing ammonia odor, and the environmental protection needs to be considered

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A preparation method of a modified porous alumina formaldehyde adsorbent, comprising the following steps:

[0046] 1) Alumina sol configuration: weigh 3kg of pseudo-boehmite and 30kg of deionized water, mix in the batching tank at 60°C for 1 hour, cool to 25°C for later use;

[0047] 2) Active liquid configuration: Weigh 2kg of L-glycine, 1kg of L-taurine, 0.5kg of sodium hydroxide, and 30kg of deionized water, and mix them in the batching tank at 25°C for 0.5h to prepare the amino acid active liquid;

[0048] 3) Mixing impregnation: Weigh 100kg of activated alumina balls, place them in a mixing tank, pump the aluminum sol prepared in step 1), mix and stir at 25°C for 0.5h, then pump in the amino acid active solution prepared in step 2), Mix and stir at 25°C for 1 hour to obtain alumina modified wet material;

[0049] 4) Microwave drying: put the alumina modified wet material obtained in step 3) on a tray, and dry it in a microwave drying line at a drying temperature o...

Embodiment 2

[0052] A preparation method of a modified porous alumina formaldehyde adsorbent, comprising the following steps:

[0053] 1) Alumina sol configuration: Weigh 1kg of pseudoboehmite and 25kg of deionized water, mix in the batching tank at 60°C for 1 hour, cool to 25°C for later use;

[0054] 2) Active liquid configuration: Weigh 2kg of L-glycine, 0.5kg of L-histidine, 0.4kg of potassium hydroxide, and 30kg of deionized water, and mix them in the batching tank at 25°C for 0.5h to prepare the amino acid active liquid;

[0055] 3) Mixing impregnation: Weigh 100kg of activated alumina balls, put them in a mixing tank, pump the aluminum sol prepared in step 1), mix and stir at 25°C for 0.5h, then pump in the amino acid active solution prepared in step 2), 25 ℃ mixing and stirring for 1 hour to obtain alumina modified wet material;

[0056] 4) Microwave drying: put the alumina modified wet material obtained in step 3) on a tray, and then enter the microwave drying line for drying at ...

Embodiment 3

[0059] A preparation method of a modified porous alumina formaldehyde adsorbent, comprising the following steps:

[0060] 1) Alumina sol configuration: weigh 2kg of pseudo-boehmite and 30kg of deionized water, mix in the batching tank at 60°C for 1 hour, cool to 25°C for later use;

[0061] 2) Active liquid configuration: Weigh 3kg of L-glycine, 0.5kg of L-proline, 0.4kg of sodium carbonate, and 35kg of deionized water, and mix them in the batching tank at 25°C for 0.5h to prepare the amino acid active liquid;

[0062] 3) Mixing impregnation: Weigh 100kg of activated alumina balls, put them in a mixing tank, pump the aluminum sol prepared in step 1), mix and stir at 25°C for 0.5h, then pump in the amino acid active solution prepared in step 2), 25 ℃ mixing and stirring for 1 hour to obtain alumina modified wet material;

[0063] 4) Microwave drying: put the alumina modified wet material obtained in step 3) on a tray, and then enter the microwave drying line for drying at a dr...

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Abstract

The invention provides a modified porous alumina formaldehyde adsorbent and a preparation method thereof. The adsorbent is prepared from raw materials in parts by weight as follows: 100 parts of activated alumina balls, 2-5 parts of compound amino acid, 0.2-0.5 parts of an alkali additive, 0.5-4 parts of pseudo-boehmite and 40-80 parts of deionized water. Compared with the prior art, porous alumina is adopted as a base material, an amino acid active substance is further adopted for modifying a carrier, and the adsorbent can be obtained by simple mixed impregnation and microwave drying; the method is simple, practicable and environmentally friendly, and the preparation cycle is short. The problem of release of smelly substances and ammonia gas of the modified materials can be solved, the modified porous alumina formaldehyde adsorbent suitable for the indoor formaldehyde pollution treatment is developed, the corresponding effective and feasible preparation method is proposed, the ever-increasing market requirement of the indoor formaldehyde pollution treatment is met, and quite good social benefit and economic benefit are obtained.

Description

technical field [0001] The invention belongs to the field of indoor formaldehyde treatment, and in particular relates to a modified porous alumina formaldehyde adsorbent and a preparation method thereof. Background technique [0002] Indoor formaldehyde, especially in newly decorated rooms, has a high content of formaldehyde, and has the characteristics of high toxicity, wide sources and long release time, and is the main cause of many diseases. Long-term exposure to formaldehyde can cause headaches, dizziness, fatigue, sensory disturbances, decreased immunity, memory loss or neurasthenia, mental depression, and even respiratory dysfunction, hepatotoxic lesions, increased Hodgkin's lymphoma, multiple bone marrow Cancer, myelogenous leukemia and other special cancers are determined by the World Health Organization as carcinogenic and teratogenic substances. my country's "Indoor Air Quality Standard GB / T18883-2002" stipulates that the concentration of formaldehyde in the room a...

Claims

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Application Information

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IPC IPC(8): B01J20/22B01J20/28B01J20/30B01D53/02
CPCB01D53/02B01D2257/70B01J20/08B01J20/22B01J20/28054
Inventor 章文贵郭进进向耿辉朱慧可陈梅奉向东龚梅玲
Owner 芜湖格丰环保科技研究院有限公司
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