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Absorption device for formaldehyde in indoor air

A formaldehyde absorption and indoor air technology, applied in the direction of air quality improvement, gas treatment, membrane technology, etc., can solve the problems of secondary release of formaldehyde, limited adsorption of formaldehyde by activated carbon, and easy saturation, so as to prevent secondary release of formaldehyde and reduce resources Wasteful, easy-to-observe effects

Active Publication Date: 2019-02-22
广西壮族自治区环境监测中心站
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a formaldehyde absorbing device in indoor air to solve the above-mentioned background technology. Now people mostly use activated carbon or plant pothos to absorb formaldehyde. However, after people put activated carbon in the cabinet or in the room, it will I forgot how long it has been placed. Activated carbon has limited adsorption of formaldehyde, and it is very easy to be saturated. The saturation period is only about 20 days. After 20 days, it will no longer have the adsorption capacity, but there will be a risk of secondary release of formaldehyde. In addition, the existing pothos planted It is inconvenient to add water to flowerpots that absorb formaldehyde, especially for densely grown plants like pothos

Method used

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  • Absorption device for formaldehyde in indoor air
  • Absorption device for formaldehyde in indoor air
  • Absorption device for formaldehyde in indoor air

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A formaldehyde-absorbing material package is placed in the storage box, and the formaldehyde-absorbing material includes the following raw materials in parts by weight: 18 parts of nano carbon sol, 7 parts of bentonite particles, 4 parts of mica particles, 3 parts of attapulgite particles, zinc oxide 10 parts of particles, 12 parts of ammonium bromide, 9 parts of carbodiamide urea, 6 parts of polyacrylamide, 25 parts of nano-titanium sol. The preparation method of the formaldehyde absorbing material comprises the following steps: (1) After uniformly mixing the nano-titanium sol and the nano-carbon sol, adding the bentonite particles, mica particles, attapulgite particles, zinc oxide particles, ammonium bromide, carbon Diamide urea, polyacrylamide, and stirring evenly to obtain a raw material mixture; (2) Grinding, granulating, and drying the raw material mixture to prepare porous composite microspheres and formaldehyde absorbing materials.

[0034] The present invention...

Embodiment 2

[0037]Get 500 grams of the formaldehyde absorbing material of Example 1 of the present invention and set aside. The formaldehyde absorption capacity is compared with the absolute absorption capacity. The test uses a sealed stainless steel box (0.7m×0.7m×0.7m) as the measurement space for formaldehyde. The air outlet of the stainless steel box is a "U"-shaped tube, and the "U"-shaped tube The bottom can be filled with activated carbon or the formaldehyde absorbing material of the present invention. The ability of the formaldehyde absorbing material of the present invention to remove formaldehyde takes activated carbon as a comparative reference. Use the box of two experiments to compare and carry out synchronously, put 500 grams of formaldehyde absorbing material of the present invention in one " U " shape tube, another fills in 500 grams of food-grade activated carbon for absorbing formaldehyde, use formaldehyde measuring instrument (PPM Formaldehydemeter400, The resolution i...

Embodiment 3

[0042] Adopt 10 grams of the formaldehyde absorbing material prepared in Example 1. Based on the calculation that the formaldehyde absorption capacity is 285 times that of activated carbon, the amount of activated carbon is 2.85 kg. The formaldehyde absorption capacity is quantified by the change of formaldehyde concentration, and the test uses a completely sealed stainless steel box (1.0m×1.0m×1.0m) as the measurement space for formaldehyde. Place 10 grams of the formaldehyde absorbing material prepared in Example 2 in one box, and place 2.85 kilograms of activated carbon in the other. The initial formaldehyde concentration is 2ppm, the room temperature is controlled at 25 degrees, and the formaldehyde content in the air in the box is continuously sampled and monitored. The average value of three experiments is taken, and the concentration data obtained are shown in Table 2 below.

[0043] Table 2 Concentration Data

[0044] time (hours)

[0045] The results in Ta...

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PUM

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Abstract

The invention discloses an absorption device for formaldehyde in indoor air. The absorption device comprises a casing, a handle is connected to the right side of the casing, support legs are connectedto the bottom of the casing, and a filling object is disposed between a partition plate and the bottom of the casing. A formaldehyde meter is disposed in a storage groove, and the left side in casingis provided with a placing groove, and the left side of an absorption box is connected with a hanging ring, the surface of a timer is provided with a display screen, and the surface of the absorptionbox is provided with vent holes. A storage box is disposed between sliding devices, and a formaldehyde absorbent material package is disposed in the storage box. A water storage tank is disposed on the right side in the casing, and a hinge is mounted on the surface of a liner. The timer is mounted on the absorption box. When the formaldehyde absorption material package is placed, a user can pressa start button to start timing, so that the user can know how long it takes to ensure replacement at the end of the absorption effect of the formaldehyde absorbent material package and prevent secondary release of formaldehyde.

Description

technical field [0001] The invention relates to the technical field of formaldehyde absorption, in particular to a formaldehyde absorption device in indoor air. Background technique [0002] The main harm of formaldehyde is shown as the stimulation to skin mucous membrane. When formaldehyde reaches a certain concentration indoors, people will feel uncomfortable. Greater than 0.08mg / m 3 High formaldehyde concentrations can cause red eyes, itchy eyes, throat discomfort or pain, hoarseness, sneezing, chest tightness, wheezing, dermatitis, etc. Newly decorated rooms have higher levels of formaldehyde, which is the main cause of many diseases. Therefore, people have adopted various methods to absorb indoor formaldehyde. [0003] Now people mostly use activated carbon or planting pothos to absorb formaldehyde. However, after people put activated carbon in the cabinet or in the room, they will forget how long it has been placed. Activated carbon has limited adsorption of formal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/85B01D53/72
CPCB01D53/72B01D53/85B01D2257/708Y02A50/20
Inventor 黄增黄红铭曾健华许园园吕保玉白海强黄小佳覃华芳陆晓艳
Owner 广西壮族自治区环境监测中心站