Air purifier

A technology for air purifiers and air purifiers, used in chemical instruments and methods, dispersed particle separation, separation methods, etc.

Active Publication Date: 2014-05-21
JIANGSU ATOM BIOSCI & PHARMA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Hazardous compounds, especially volatile hazardous organic compounds

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0088] Embodiment 1: the preparation of amino type chemical remover compound

[0089] This example prepares compounds useful as amino-type chemical removers contained in Composition A.

[0090] 1. Synthesis of 2-(4,6-diamino-1,3,5-triazine-2-amino)-acetic acid (1)

[0091]

[0092] Melamine (2.52 g, 20 mmol) was suspended in water (70 mL), heated to 90°C to give a nearly clear solution, and then sodium carbonate (3.0 g, 28 mmol) was added. A solution of bromoacetic acid (2.78 g, 20 mmol) in water (20 mL) was added dropwise to the resulting mixture at 90°C, and stirring was continued for 3 hours. Cool to room temperature, adjust to pH>12 with 2M aqueous sodium hydroxide solution, filter, and collect the filtrate. Then the pH was adjusted to 6 with 2M hydrochloric acid, filtered and dried to give 2-(4,6-diamino-1,3,5-triazine-2-amino)-acetic acid (1) (2.05g). The yield was 68.5%.

[0093] MS (EI, m / z): 185.2 [M+H] + , 207.2[M+Na] + .

[0094]2. Synthesis of 4-(4,6-di...

Embodiment 2

[0133] Embodiment 2: Adopt composition A to remove formaldehyde

[0134] Method 1: Removing formaldehyde by reacting melamine and formaldehyde under alkaline conditions

[0135]1) Add 50g of water, 0.5g of melamine and 0.1g of NaOH into a 2L reaction bottle, stir evenly, and form a solution.

[0136] 2) In a 500mL round bottom flask, add 300mL of 35% formaldehyde aqueous solution (mass fraction), heat and stir in an oil bath at 60°C. After connecting the air pump, blow in air and control the exhaust volume to 2.5L / min. The air containing formaldehyde is simulated and passed into the above-mentioned reaction flask containing melamine.

[0137] 3) Add formaldehyde for 6 hours. The reaction bottle was stoppered and stirred at room temperature for 6 h, the reaction mixture became white and turbid and uniformly viscous. Sampling, filtering and washing with water. The obtained solid sample was vacuum-dried to obtain a white powder solid.

[0138] 4) The raw material and the ...

Embodiment 3

[0220] Embodiment 3: Adopt composition B to remove formaldehyde

[0221] Method 1. Potassium permanganate removes formaldehyde under neutral conditions (I)

[0222] 1) Weigh anhydrous CaCl successively 2 40g, potassium permanganate 5g and water 40g in a 2L reaction flask, stir evenly to form a dark purple solution.

[0223] 2) According to the preparation method of Method 1 in Example 2, the air containing formaldehyde was introduced for 15 minutes. Measure the formaldehyde concentration in the reaction bottle with LB-3JY indoor air quality detector to be 0.41mg / m 3 . The reaction vial was stoppered and the reaction was stirred. Measure the concentration of formaldehyde in the reaction bottle at regular intervals. The concentration of formaldehyde in the reaction bottle was measured at 1h to be 0.22mg / m 3 , the concentration of formaldehyde is less than 0.01mg / m3 in 3 hours 3 .

[0224] Method 2. Potassium permanganate removes formaldehyde under neutral conditions (Ⅱ...

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Abstract

The invention provides an air purifier which is filled with an air purifying agent composition. The air purifying agent composition comprises one or more selected from the following compositions to remove harmful pollutants in air. The compositions comprise an A component comprising an amino type chemical remover, an optional water-retaining agent, an optional alkali compound or an organical acid compound and optional water, a B component comprising an oxidizing agent type chemical remover, an optional water-retaining agent, an optional weak alkaline compound and optional water, and a C composition comprising a chemical absorber and optional water. In addition, the air purifying agent composition also can comprise a physical adsorbing agent. The chemical and physical multicomponent composition in the air purifier combines the advantages of a physical adsorption method and a chemical method, can be used for simultaneously removing common harmful volatile organic compounds such as methanal, benzene and benzene series such as methylbenzene and dimethylbenzene, and solid suspended particles in rooms or cars, can be used in combination according to specific needs, and is wide in application range and convenient in operation.

Description

technical field [0001] The invention relates to an air purification device, especially an air purifier suitable for indoors and vehicles, which can efficiently and safely purify the air, remove harmful pollutants in the air, especially remove volatile harmful organic compounds such as formaldehyde in the air , Benzene and benzene series such as toluene, xylene, etc., and suspended particles. Background technique [0002] With the acceleration of global industrialization and urbanization, complex environmental problems continue to emerge, and the pollution of volatile organic compounds (Volatile Organic Compounds, VOCs) in the atmosphere is becoming more and more serious. [0003] There are certain differences in the definition standards of VOCs by different agencies. The United States Environmental Protection Agency (USEPA) defines VOCs as: any carbon-containing compound that participates in atmospheric photochemical reactions, excluding carbon monoxide, carbon dioxide, car...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/77B01D53/44B01D53/02
Inventor 史东方李双双
Owner JIANGSU ATOM BIOSCI & PHARMA CO LTD
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