CN2530802Y

CN2530802Y - Sandwich felt for removing organic pollutant such as formaldehyde etc. in air and its product

Info

Publication number: CN2530802Y
Application number: CN 01263139
Authority: CN
Inventors: 王雨群
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-10-09
Filing date: 2001-10-09
Publication date: 2003-01-15
Anticipated expiration: 2011-10-09

Abstract

The utility model provides a sandwich felt for removing organic pollutant such as formaldehyde etc. in air. A hot melting agglutinated padding cloth(4) which is evenly distributed with hot melting glue motes(1) serves as the upper and lower layers, one or more layers of activated carbon fiber felts(3) loaded with simulated enzyme catalyst(2) are pasted and packed between the two layers so that the sandwich felt is formed. The micro holes in the sandwich felt(3) is absorbed and loaded on the surface of the carbon fiber(3) and gains the cooperating effect of catalyzing and oxidation disaggregation so as to purify the organic pollutant such as formaldehyde etc. in air for a long time. The utility model is characterized in small volume, rapid absorbing speed, high purifying efficiency and no secondary pollution. The minim moisture in the air can male the active catalyst(2) with hydrophilic radical be strengthened so as to improve the purifying function. The utility model can be assembled in the air purifier, the filtering net of air conditioner, the wind channel of centralized air conditioner and the wooden cabinet so as to purify the organic pollutant such as formaldehyde etc. in air and father the fitment pollution and bad building syndrome.

Description

The sandwich felt and the goods thereof of organic pollutions such as formaldehyde are used for purifying air

The utility model relates to the sandwich felt of organic pollution such as a kind of formaldehyde that is used for purifying air, and refers in particular to and utilizes activated carbon fiber loaded bionical enzyme catalyst, organic pollution such as formaldehyde in purifying air.

In recent years, the room air pollution that the volatile organic compounds such as formaldehyde that distribute because of indoor hardware fitting cause produces multiple harm to health, and environmental protection in all parts of the country and prevention from suffering from the diseases department all made the investigation report.It is very urgent to eliminate finishing pollution.Yet many traditional indoor air purification methods are difficult to satisfy to eliminate the requirement of finishing pollution, the task of top priority be: the new and effective scavenging material of developmental research, eliminate the thing that organises such as airborne formaldehyde and pollute.

Activated carbon fiber (ACF) is as the new and effective sorptive material of the third generation, the bigger serface that has, enriches micropore and a certain amount of oxygen-containing functional group and active group; It is compared with traditional sorbing materials such as active carbons, has advantages such as adsorption rate is fast, adsorbance is big, demonstrates wide application prospect in air cleaning and environmental protection field.

Chinese patent CN2174664Y directly is made into air-purifying net with ACF, is installed in the air channel of central air-conditioning, carries out the purification of air.Chinese patent CN1242257A ACF is a carrier, and the carried metal copper ion makes ACF extend to 70 hours to the time of break-through of mercaptan from 8 hours.These novel products are for the application of activated carbon fiber provides useful approach.Yet they in use exist: or because of simple limited by ACF adsorption function, adsorption capacity; Or because of the ACF fibre tensile strength is little, deficiency such as easily damaged, that fiber comes off easily; Phenomenons such as the catalysis of the metal ion of load is more weak.Improving the purification function of ACF and use the term of validity, is that people pay close attention to and research direction.

Show according to interrelated data retrieval: still do not have at present at the bionical enzyme catalyst of ACF area load, be used to administer the air clearing product of the organic pollutions such as formaldehyde that indoor hardware fitting distributes.

The purpose of this utility model provides the sandwich felted terxture of the bionical enzyme catalyst of a kind of load, decomposes cooperative effect, purifies because of the organic pollutions such as formaldehyde that indoor hardware fitting distributes, the novel air purification product of non-secondary pollution by the catalytic oxidation of ACF absorption with bionical enzyme catalyst.

The purpose of this utility model provides a kind of effective raising ACF surface resistance to tension, prevents the air-purifying product that surface fiber comes off, can use for a long time.

The utility model is by making ACF sandwich felted terxture, the function of bionical enzyme catalyst and ACF is organically combined, can be in the indoor environment of the big excursion of relative humidity, catalyst can keep higher catalytic decomposition function, thereby the air-purifying product of pollutant in being particularly suitable for purifying air in the living environment.

The purification mechanism of the utility model product is: utilize ACF surface characteristic (list of references: Li Wei etc.; " petrochemical industry " 2000,29,11; 872-874), bigger serface by ACF, enrich microcellular structure and kinds of surface active group, make bionical enzyme catalyst obtain uniform load at fiber surface, bionical enzyme catalyst with the big molecular metal coordination of pi-electron cloud planar conjugate thing, and the mutual dispersion interaction of generation between the pi-electron cloud of the banded aspect of the graphite of fiber surface, form stronger conjugate surface combination, aggravated the tendency that electronics shifts in the catalyst molecule, show as bionical enzyme catalyst and have stronger catalytic oxidation function, improved the catalytic oxidation capacity of decomposition that PARA FORMALDEHYDE PRILLS(91,95) etc. is adsorbed pollutant.Simultaneously, because the equally loaded catalyst increases with the contact area that is attracted to the pollutant in the brilliant micropore of carbon, the speed that pollutant is decomposed by catalytic oxidation is accelerated, and pollutant is by absorption one catalytic oxidation and decompose non-secondary pollution.Be adsorbed to the moisture content of trace in the air on ACF surface, the catalytic activity of the big molecular metal coordination thing that contains hydrophilic radical is strengthened, improved the purifying functions of sandwich felt pollutant.Thereby the utility model is more suitable in living environment, decomposes the organic pollutions such as formaldehyde that distributed by finishing material in the air.

Enforcement below in conjunction with the utility model product elaborates.

The structural representation of the ACF sandwich felt of the bionical enzyme catalyst of Fig. 1 load

Among the figure: 1. hot melt adhesive particulate 2. active carbon fiber felts 3. bionical enzyme catalyst 4. binding lining surface layers.

Implementation step is: under the heat effect of water vapour, there are the active carbon fiber felt (2) of bionical enzyme catalyst (3) and superficial layer binding lining (4) bonding load by the hot melt adhesive particulate (1) that is evenly distributed on binding lining (4) inner surface, make the sandwich felted terxture.Beneficial effect and performance test thereof:

1.ACF the bionical enzyme catalyst of load is made sandwich felt finished product; Sandwich felt appearance and size: the thick 12 * 10mm of 2mm;

2. instrument and test condition:

The U.S. produces Intetscan methylene oxide detecting instrument: sensitivity ± 0.01ppm; Before each the measurement, with P/N C-12 Zero Filter

The formaldehyde adjuster is proofreaied and correct; 5.5 rise common quartz glass beaker as test container; During the test beginning, with sandwich felt finished product

Be positioned over the glass beaker bottom; Rim of a cup seals with plastic sheeting; Under unpowered stirring action, detect the suction of its PARA FORMALDEHYDE PRILLS(91,95)

An attached oxidative decomposition capacity.Active carbon fiber felt with same matrix compares test in contrast; 3. contaminant gases such as formaldehyde:

Directly take from the organic mixing cpd of volatiles such as formaldehyde that wooden cabinet gives out; Detect the formaldehyde initial amount before the sealing.And then the content of formaldehyde value of corresponding time under the detection sealing state.Test 1: the static purifying formaldehyde test data that purifies of sandwich felt:

Clarification time (min)	0	5	10	15
Clarification time (min)	0	5	10	15	Concentration of formaldehyde (ppm)	0.60	0.15	0.10	0.07
Purifying rate (%)	/	75	83	88	Concentration of formaldehyde (ppm)	0.60	0.15	0.10	0.07

Test 2: sandwich felt PARA FORMALDEHYDE PRILLS(91,95) continuous degradation test data (notes)

Standing time (my god)	1	2	3	7	8	9	20
Standing time (my god)	1	2	3	7	8	9	20	Formaldehyde initial concentration (ppm)	0.60	0.60	0.50	0.65	0.50	0.76	2.00
Concentration in the time of 20 minutes (ppm)	0.07	0.10	0.10	0.10	0.10	0.20	0.34	Formaldehyde initial concentration (ppm)	0.60	0.60	0.50	0.65	0.50	0.76	2.00
Concentration in the time of 20 minutes (ppm)	0.07	0.10	0.10	0.10	0.10	0.20	0.34	20 minutes purifying rates (%)	88	83	85	83	85	74	83
20 minutes purifying rate % of control group	83			72			59	20 minutes purifying rates (%)	88	83	85	83	85	74	83

(notes): sandwich felt finished product is positioned in the test container under the wooden cabinet inner opening state, exposes to the open air and in the contaminant gases environment, carry out the continuous purification performance test, behind the initial concentration, seal during detection with plastic sheeting.Detect the concentration of formaldehyde in the airtight container after 20 minutes.The continuous purification that carried out 20 days detects test.Test 3: dynamic purification test 1. test clarifiers:

The whole movement of the KJ180-TGS type indoor air cleaner that adopts the Yadu Science and Technology Co., Ltd., Beijing to produce; 2. filter element for purifier:

With the ACF fiber of the bionical enzyme catalyst of 2 * 58 * 29mm load, make air purifier and purify filter core, substitute in the machine

The active carbon filter screen is positioned over the clarifier machine and makes cleaning test; The volatile gases such as formaldehyde that the wooden cabinet of direct employing gives out are as pollution sources (open wooden cupboard door, close the doors and windows, distributed naturally 2 days); Interior space volume: long 5.7m * wide 3.3m * high 3.5m; About 65.84m ³4. measurement result: formaldehyde initial concentration: 0.58ppm; 3 grades of wind speed (180m ³/ h); Formaldehyde measurement value 0.21ppm after 60 minutes, the purifying formaldehyde rate is 64%;

Continuous detecting by 20 days, the result shows: volatile orgnic compound pollution such as formaldehyde during this sandwich felted terxture can purify air long-term effectively, the organic contaminations such as formaldehyde of being distributed by ornament materials in can be used for purifying the air of a room are administered " bad building is combined disease ".

Claims

One kind capable of purifying air in the sandwich felt of organic pollution such as formaldehyde, form by active carbon fiber felt, bionical enzyme catalyst, HOTMELT ADHESIVE PADDING CLOTH, its characteristic is: be evenly distributed with the surface layer of the HOTMELT ADHESIVE PADDING CLOTH (4) of hot melt adhesive particulate (1) as upper and lower surface by inner surface, there have the active carbon fiber felt (2) of bionical enzyme catalyst molecule (3) to be bonded at carbon crystal fiber area load one or more layers to be middle, constitutes the sandwich felt.