WO2016036022A1

WO2016036022A1 - Composition for removing harmful gas, preparing method therefor, filter, and air conditioner comprising same

Info

Publication number: WO2016036022A1
Application number: PCT/KR2015/008565
Authority: WO
Inventors: 오원석; 박형호; 채상열
Original assignee: 주식회사 엘지전자
Priority date: 2014-09-03
Filing date: 2015-08-17
Publication date: 2016-03-10
Also published as: CN105381657A; KR20160028177A; KR102270611B1

Abstract

The present invention relates to a composition for removing a harmful gas, a preparing method therefor, a filter apparatus, and an air conditioner comprising the same. The composition for removing a harmful gas according to an embodiment of the present invention contains 2-10 parts by weight of an acidic material comprising an amine (-NH₂) group, 5-20 parts by weight of phosphoric acid (H₃PO₄), 0.001-0.005 parts by weight of platinum (Pt), and the balance solvent.

Description

Composition for removing noxious gas, preparation method thereof, filter and air conditioner including same

The present invention relates to a composition for removing noxious gas, a manufacturing method thereof, a filter device and an air conditioner including the same.

Airtightening of structures to save energy in buildings is a cause of indoor air pollution. And contaminated indoor air becomes a causative agent of various diseases, which negatively affects the health of residents.

Meanwhile, pollutants generated indoors may be classified into particulate pollutants such as fine dust and asbestos, gaseous pollutants such as carbon dioxide, formaldehyde, and volatile organic compounds, and biological pollutants such as viruses and fungi.

Such contaminants may be removed to some extent by filters provided in the process cleaner, the air conditioner and the total heat exchanger.

However, such a filter has a high removal efficiency of particulate contaminants and biological contaminants, but removes gaseous materials but has a low removal efficiency.

On the other hand, the background art of the present invention is disclosed in Republic of Korea Patent Publication No. 10-2006-0129593.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a composition for removing harmful gases capable of removing contaminants in the air, a manufacturing method thereof, a filter, and an air conditioner including the same.

In the harmful gas removal composition according to an embodiment of the present invention, 2 to 10 parts by weight of an acidic substance containing an amine group (-NH ₂ ), 5 to 20 parts by weight of phosphoric acid (H ₃ PO ₄ ), and platinum (Pt ) 0.001 to 0.005 parts by weight and the balance of the solvent.

In addition, the acidic material containing the amine group includes para-aminobenzoic acid or sulfanilic acid.

In addition, the residual amount of solvent contains water (H ₂ O).

In addition, the water has a 70 to 90 parts by weight.

In addition, the platinum (Pt) is characterized in that it is prepared by reducing hexachloro platinum acid (hydrogen hexachloroplatinate (IV)) to polyvinyl alcohol (Polyvinyl alcohol) and Propolis Extract (Propolis Extract).

According to another aspect of the present invention, there is provided a method for preparing a noxious gas removal composition, the method comprising: mixing 70 to 90 parts by weight of water and 2 to 10 parts by weight of an acidic material including an amine group (-NH ₂ ) to form a first mixed solution; Heating and stirring the first mixed solution to form a second mixed solution; Forming a third mixed solution by mixing 5 to 20 parts by weight of phosphoric acid (H ₃ PO ₄ ) and 0.001 to 0.005 parts by weight of platinum (Pt) to the second mixed solution; And stirring the third mixed solution.

In addition, the step of heating and stirring the first mixed solution, the step of heating and stirring the first mixed solution at 500rpm for 2 hours at 50 to 70 ℃.

The stirring of the third mixed solution may include stirring the third mixed solution at 500 rpm for 3 hours at 15 to 25 ° C.

Filter according to another aspect, the filter member; A harmful gas removal composition adhering to the filter member, wherein the harmful gas removal composition, 2 to 10 parts by weight of an acidic material containing an amine group (-NH ₂ ) and phosphoric acid (H ₃ PO ₄ ) 5 To 20 parts by weight, platinum (Pt) of 0.001 to 0.005 parts by weight and the remaining amount of the solvent is included.

In addition, the residual amount of solvent contains water (H ₂ O).

In addition, the water has a 70 to 90 parts by weight.

The filter member may further include a first filter member formed in a flat plate shape; A second filter member formed in a wave shape; And an air passage formed between the first filter member and the second filter member, wherein the first filter member and the second filter member are stacked alternately with each other.

In addition, the material of the first filter member or the second filter member is characterized in that made of polypropylene.

According to yet another aspect, an air conditioner includes a case; An air filtration unit mounted to the case and to which a composition for removing harmful gas is adhered; An air flow unit for flowing air to the air filtration unit; And a heat exchanger for cooling or heating the air filtered by the air filtration unit, wherein the harmful gas removing composition includes 2 to 10 parts by weight of an acidic material including an amine group (-NH ₂ ), and phosphoric acid (H _3). PO ₄ ) 5 to 20 parts by weight, and 0.001 to 0.005 parts by weight of platinum (Pt) and a residual amount of solvent.

According to the composition for removing harmful gases according to the present invention, a manufacturing method, a filter, and an air conditioner including the same, gaseous contaminants such as formaldehyde, ammonia, benzene, toluene, sulfur dioxide, and nitrogen dioxide can be effectively removed.

1 is a perspective view of an air conditioner according to an embodiment of the present invention.

FIG. 2 is a perspective view of the front door of the air conditioner of FIG. 1 opened. FIG.

3 is a front view of a filter mounted on the side filter part, the bottom filter part and the internal filter part of the air conditioner of FIG. 1.

4 is a cross-sectional view of the filter of FIG. 3.

Hereinafter, some embodiments of the present invention will be described in detail with reference to the accompanying drawings. In adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are assigned to the same components as much as possible even though they are shown in different drawings. In addition, in describing the embodiments of the present invention, when it is determined that a detailed description of a related well-known configuration or function interferes with the understanding of the embodiments of the present invention, the detailed description thereof will be omitted.

Hereinafter, an air conditioner according to an embodiment of the present invention will be described with reference to the drawings.

1 is a perspective view of an air conditioner according to an embodiment of the present invention, Figure 2 is a perspective view of the front door of the air conditioner of Figure 1 is open.

Referring to FIG. 1, the air conditioner 10 rotates by forming a space therein so that a plurality of components can be built therein, forming a case 11 forming an external shape, and a front appearance of the case 11. The front door 12 may be mounted on the case 11, and the operation part 13 mounted on the front surface of the front door 12 may be included.

The case 11 includes a first frame 111 on which the front door 12 is mounted, and a second frame 112 mounted on the rear of the first frame 111.

Side discharge vanes 21 are mounted at air discharge ports formed at both upper sides of the first frame 111, and side suction vanes 22 are mounted at air suction ports formed at both lower sides of the first frame 111.

In addition, an upper surface discharge vane 23 is mounted at an air discharge port formed at an upper side of the first frame 111, and an air suction port 111a is formed at a lower side of the first frame 111.

Meanwhile, the air conditioner 10 sucks air into the side suction vanes 22 and the air suction ports 111a, and discharges air to the side discharge vanes 21 and the top discharge vanes 23. It may include a flow portion (not shown).

In addition, the air conditioner 10 may include a heat exchanger (not shown) installed inside the case 11 and exchanging heat with air flowing into the case 11 and a refrigerant.

Referring to FIG. 2, a side filter part 31 may be mounted inside the first frame 111 to purify the air flowing into the air intake ports formed at both lower sides of the first frame 111. .

In addition, a lower surface filter unit 32 may be mounted in the first frame 111 to purify the air flowing into the air inlet 111a formed at the lower side of the first frame 111.

In addition, an internal filter unit 33 may be further installed inside the first frame 111 to filter the air filtered by the side filter unit 31 and the bottom filter unit 32 once more.

The side filter part 31, the bottom filter part 32, and the internal filter part 33 may be referred to as air filter parts in that they filter air introduced into the case 11.

3 is a front view of a filter mounted on the side filter part, the bottom filter part and the internal filter part of the air conditioner of FIG. 1, and FIG. 4 is a cross-sectional view of the filter of FIG. 3.

A filter 40 is included in the side filter part 31, the bottom filter part 32, or the internal filter part 33.

The filter 40 may include a first filter member 41 and a second filter member 42.

The first filter member 41 is formed in a flat plate shape, and the second filter member 42 is formed in a wave shape or a sand shape. The first filter member 41 and the second filter member 42 are stacked alternately with each other.

The air passage 40a through which the air filtered by the first filter member 41 and the second filter member 42 flows between the first filter member 41 and the second filter member 42. Is formed.

The filter 40 may further include a composition 50 for removing harmful gas adhered to the surfaces of the first filter member 41 and the second filter member 42. The first filter member 41 and the second filter member 42 may be referred to as carriers in that the harmful gas removing composition 50 is adhered.

In addition, the harmful gas removing composition 50 may be adhered by spraying or dipping the surfaces of the first filter member 41 and the second filter member 42.

The material of the first filter member 41 and the second filter member 42 may be formed of a material to which the harmful gas removing composition 50 is adhered, for example, a polypropylene material.

Accordingly, the filter 40 may remove particulate contaminants such as asbestos and biological contaminants such as viruses and fungal bacteria from the air, and the carbon dioxide, formaldehyde, It can also remove gaseous contaminants such as volatile organic compounds.

Hereinafter, the composition for removing the noxious gas and a manufacturing method thereof will be described.

The harmful gas removal composition is 2 to 10 parts by weight of the acidic material containing an amine group (-NH ₂ ), 5 to 20 parts by weight of phosphoric acid (H ₃ PO ₄ ), 0.001 to 0.005 parts by weight of platinum (Pt) and Residual amount of solvent. Here, the remaining amount of the solvent may include 70 to 90 parts by weight of water (H ₂ O).

Acidic substances containing the amine group include para-aminobenzoic acid or sulfanilic acid.

The paraaminobenzoic acid has an amine group (-NH ₂ ) and a carboxyl group (-COOH) bonded to the benzene ring, and thus may react chemically with an acidic or basic substance. In particular, high volatile lower aldehydes such as formaldehyde and acetaldehyde may be more effectively removed through the imine formation reaction of Formula 1 below.

Formula 1

On the other hand, the removal efficiency of high volatile lower aldehydes, such as when the paraaminobenzoic acid or sulfanic acid is less than 2 parts by weight in the harmful gas removal composition.

In addition, when the paraaminobenzoic acid or sulfanic acid exceeds 10 parts by weight in the harmful gas removal composition, the efficiency of removing harmful substances may be deteriorated due to a decrease in specific surface area of the carrier, that is, a reduction in surface area per unit volume.

Therefore, the paraaminobenzoic acid or sulfanic acid in the composition for removing harmful gases is preferably added in the range of 2 to 10 parts by weight.

The phosphoric acid (H ₃ PO ₄ ) can remove ammonia. When the phosphoric acid is less than 5 parts by weight in the composition for removing harmful gases, ammonia removal efficiency is lowered. And when the phosphoric acid in the composition for removing harmful gases exceeds 20 parts by weight, the removal efficiency of harmful substances is reduced due to the reduction of the specific surface area of the carrier for adsorption. Therefore, the phosphoric acid in the harmful gas removal composition is preferably 5 to 20 parts by weight.

The platinum (Pt) serves as a catalyst for effectively reacting lower aldehydes such as formaldehyde and acetaldehyde with amine groups.

The platinum may be prepared by reducing hexachloro platinum acid (hydrogen hexachloroplatinate (IV)) with polyvinyl alcohol and Propolis Extract.

In particular, since the platinum acts as a reaction catalyst for hydrogenation (protonation) of the aldehyde, it is possible to increase the lower aldehyde removal efficiency, such as formaldehyde and acetaldehyde.

And the platinum is preferably added to 0.001 to 0.005 parts by weight to the harmful gas removal composition. When the platinum is less than 0.001 parts by weight in the noxious gas removal composition, the catalytic reaction is difficult to be performed smoothly, and when the platinum is more than 0.005 parts by weight in the noxious gas removal composition, the cost-effectiveness is lowered.

[실시예 1] 유해가스 제거용 조성물의 제조Example 1 Preparation of Hazardous Gas Removal Composition

A mixed solution of 80 parts by weight of water and 5 parts by weight of paraaminobenzoic acid was heated and stirred at 500 rpm for 2 hours using a magnetic stirrer to obtain a temperature of 60 ° C. After 30 minutes of further stirring until the mixed solution reached 25 ° C., 10 parts by weight of phosphoric acid and 0.002 parts by weight of platinum were added, followed by stirring at 500 rpm for 3 hours at room temperature to prepare a composition for removing harmful gases.

At this time, in order to prepare the composition, the mixed solution mixed with water and the acidic substance is called the first mixed solution, and the mixed solution formed after heating and stirring the first mixed solution is called the second mixed solution. . The mixed solution formed by mixing phosphoric acid (H ₃ PO ₄ ) and platinum (Pt) in the second mixed solution is referred to as a third mixed solution. The definition of such a mixed solution can be equally applied to the following examples.

[실시예 2] 유해가스 제거용 조성물의 제조 Example 2 Preparation of Composition for Removing Hazardous Gases

The mixed solution of 80 parts by weight of water and 5 parts by weight of sulfanic acid was heated and stirred for 2 hours at a temperature of 60 ° C. at 500 rpm using a magnetic stirrer. After 30 minutes of further stirring until the mixed solution reached 25 ° C., 10 parts by weight of phosphoric acid and 0.002 parts by weight of platinum were added, followed by stirring at 500 rpm for 3 hours at room temperature to prepare a composition for removing harmful gases.

[비교예 1]Comparative Example 1

The mixed solution in which 80 parts by weight of water and 5 parts by weight of paraaminobenzoic acid was mixed was heated and stirred for 2 hours so that the temperature was 60 ° C. while stirring at 500 rpm using a magnetic stirrer. The mixed solution was further stirred for 30 minutes until the room temperature to 25 ℃, 10 parts by weight of phosphoric acid was added and stirred for 3 hours at 500 rpm at room temperature to prepare a composition for removing harmful gases.

[비교예 2]Comparative Example 2

The mixed solution in which 80 parts by weight of water and 1 part by weight of paraaminobenzoic acid was mixed was heated and stirred for 2 hours so that the temperature was 60 ° C. while stirring at 500 rpm using a magnetic stirrer. The mixed solution was further stirred for 30 minutes until the temperature reaches 25 ° C, and then 10 parts by weight of phosphoric acid and 0.002 parts by weight of platinum were added thereto, followed by stirring at 500 rpm for 3 hours at room temperature to prepare a composition for removing harmful gases.

[비교예 3]Comparative Example 3

The mixed solution in which 80 parts by weight of water and 15 parts by weight of paraaminobenzoic acid was mixed was heated and stirred for 2 hours so that the temperature was 60 ° C. while stirring at 500 rpm using a magnetic stirrer. The mixed solution was further stirred for 30 minutes until the temperature reaches 25 ° C, and then 10 parts by weight of phosphoric acid and 0.002 parts by weight of platinum were added thereto, followed by stirring at 500 rpm for 3 hours at room temperature to prepare a composition for removing harmful gases.

[비교예 4][Comparative Example 4]

The mixed solution in which 80 parts by weight of water and 15 parts by weight of paraaminobenzoic acid was mixed was heated and stirred for 2 hours so that the temperature was 60 ° C. while stirring at 500 rpm using a magnetic stirrer. The mixed solution was further stirred for 30 minutes until the temperature reaches 25 ° C., and then 2 parts by weight of phosphoric acid and 0.002 parts by weight of platinum were added and stirred at 500 rpm for 3 hours at room temperature to prepare a composition for removing harmful gases.

[비교예 5] [Comparative Example 5]

A mixed solution of 80 parts by weight of water and 5 parts by weight of paraaminobenzoic acid was heated and stirred at 500 rpm for 2 hours using a magnetic stirrer to obtain a temperature of 60 ° C. After 30 minutes of further stirring until the mixed solution reached 25 ° C., 25 parts by weight of phosphoric acid and 0.002 parts by weight of platinum were added, followed by stirring at 500 rpm for 3 hours at room temperature to prepare a composition for removing harmful gases.

[실험예 1]Experimental Example 1

The hazardous gas removal efficiency experiments of Examples 1 and 2 and Comparative Examples 1 to 5 were conducted under the conditions of Table 1 below.

Table 1

Test chamber size	4m ³	8m ³	30m ³
Test gas concentration	10.0 (± 10%) ppm	10.0 (± 10%) ppm	10.0 (± 10%) ppm
Specimen Filter Size	340mm x 360mm x 10mm	340mm x 360mm x 10mm	340mm x 360mm x 10mm
Test Conditions	5CMM	5CMM	5CMM
Test run time	30 minutes	30 minutes	30 minutes

Here, the size of the test chamber refers to the volume (m ³ ) of the space filled with the test gas, the test conditions are the air flow per minute (CMM, Cubic Meter per Minutes) of the air flowing to the test filter, the test body operating time is the test gas Means the time when the filter is filtered.

Test results according to Example 1, that is, the removal rate of harmful substances are shown in Table 2 below.

TABLE 2

Chamber size	Formaldehyde	ammonia	benzene	Toluen	Sulfur dioxide	Nitrogen dioxide
4m ³	99.0%	99.0%	100.0%	100.0%	100.0%	100.0%
8m ³	95.0%	95.0%	100.0%	98.0%	100.0%	100.0%
30m ³	99.0%	99.0%	100.0%	100.0%	100.0%	100.0%

Test results of Example 2 are shown in Table 3 below.

TABLE 3

Test results of Comparative Example 1 are shown in Table 4 below.

Table 4

Chamber size	Formaldehyde	ammonia	benzene	Toluen	Sulfur dioxide	Nitrogen dioxide
4m ³	45.0%	99.0%	100.0%	100.0%	100.0%	100.0%
8m ³	35.0%	95.0%	100.0%	95.0%	100.0%	100.0%
30m ³	47.5%	97.5%	100.0%	100.0%	100.0%	100.0%

As shown in Table 4, the filter coated with the harmful gas removal composition of Comparative Example 1 has a formaldehyde removal efficiency of 35 to 47.5% level, and the filter coated with the harmful gas removal composition of Example 1 or Example 2 Formaldehyde removal efficiency was lower than 95-99%.

It can be judged that the added platinum catalyst affects the rate of formaldehyde removal.

Test results of Comparative Example 2 are shown in Table 5 below.

Table 5

Chamber size	Formaldehyde	ammonia	benzene	Toluen	Sulfur dioxide	Nitrogen dioxide
4m ³	10.0%	99.0%	100.0%	100.0%	100.0%	100.0%
8m ³	5.0%	95.0%	100.0%	95.0%	100.0%	100.0%
30m ³	10.0%	97.5%	100.0%	100.0%	100.0%	100.0%

As shown in Table 5, the filter coated with the composition for removing harmful gases of Comparative Example 2 had a very low formaldehyde removal efficiency of 5 to 10%.

It can be seen that the effect of paraaminobenzoic acid on the removal of formaldehyde is very high.

Test results of Comparative Example 3 are shown in Table 6 below.

Table 6

Chamber size	Formaldehyde	ammonia	benzene	Toluen	Sulfur dioxide	Nitrogen dioxide
4m ³	99.0%	99.0%	70.0%	80.0%	80.0%	65.0%
8m ³	90.0%	95.0%	60.0%	70.0%	-	-
30m ³	99.0%	97.5%	70.0%	80.0%	65.0%	62.0%

As shown in Table 6, the filter coated with the harmful gas removal composition of Comparative Example 3 had a lower removal efficiency for benzene, toluene, nitrogen dioxide, and sulfur dioxide than Example 1 or Example 2.

The high content of paraaminobenzoic acid is believed to be due to a significant decrease in the specific surface area of the filter.

Test results of Comparative Example 4 are shown in Table 7 below.

TABLE 7

Chamber size	Formaldehyde	ammonia	benzene	Toluen	Sulfur dioxide	Nitrogen dioxide
4m ³	99.0%	65.0%	100.0%	100.0%	100.0%	95.0%
8m ³	90.0%	45.0%	100.0%	100.0%	100.0%	100.0%
30m ³	99.0%	60.0%	100.0%	100.0%	100.0%	100.0%

In Comparative Example 4, the removal efficiency of ammonia was lowered when the phosphoric acid addition amount was low.

Test results of Comparative Example 5 are shown in Table 8 below.

Table 8

Chamber size	Formaldehyde	ammonia	benzene	Toluen	Sulfur dioxide	Nitrogen dioxide
4m ³	99.0%	100.0%	80.0%	75.0%	20.0%	15.0%
8m ³	85.0%	99.0%	75.0%	55.0%	-	-
30m ³	85.0%	97.5%	80.0%	80.0%	10.0%	5.0%

In Comparative Example 5, the filter coated with the composition for removing harmful gas was inferior in efficiency of removing benzene, toluene, sulfur dioxide, and nitrogen dioxide except formaldehyde due to high phosphoric acid content.

Through the results of the above examples and a plurality of comparative examples, it can be seen that when the harmful gas removal composition proposed in this embodiment is included by the set weight part, the harmful gas removal rate is formed high.

According to this embodiment, since it is possible to effectively remove gaseous contaminants such as formaldehyde, ammonia, benzene, toluene, sulfur dioxide and nitrogen dioxide, industrial applicability is remarkable.

Claims

2 to 10 parts by weight of an acidic substance containing an amine group (-NH 2 ), 5 to 20 parts by weight of phosphoric acid (H 3 PO 4 ), 0.001 to 0.005 parts by weight of platinum (Pt) and a residual amount of a solvent Composition for gas removal.
The method of claim 1,

The acidic material containing the amine group, para-aminobenzoic acid (para-aminobenzoic acid) or sulfanilic acid (sulfanilic acid) composition for removing harmful gases.
The method of claim 1,

The residual amount of the solvent, water (H 2 O) composition for removing harmful gas.
The method of claim 3, wherein

The water has a composition for removing harmful gases having 70 to 90 parts by weight.
The method of claim 1,

The platinum (Pt) is a composition for removing harmful gases, characterized in that produced by reducing hexachloro platinum acid (hydrogen hexachloroplatinate (IV)) to polyvinyl alcohol (Polyvinyl alcohol) and Propolis Extract (Propolis Extract).
Mixing 70 to 90 parts by weight of water and 2 to 10 parts by weight of an acidic substance including an amine group (-NH 2 ) to form a first mixed solution;

Heating and stirring the first mixed solution to form a second mixed solution;

Forming a third mixed solution by mixing 5 to 20 parts by weight of phosphoric acid (H 3 PO 4 ) and 0.001 to 0.005 parts by weight of platinum (Pt) to the second mixed solution; And

Method for producing a composition for removing harmful gases comprising the step of stirring the third mixed solution.
The method of claim 6,

In the step of heating and stirring the first mixed solution,

Method for producing a composition for removing harmful gas comprising the step of heating and stirring the first mixed solution at 500 rpm for 2 hours at 50 to 70 ℃.
The method of claim 6,

In the step of stirring the third mixed solution,

Method for producing a composition for removing harmful gases comprising the step of stirring the third mixed solution at 15 rpm to 500 rpm for 3 hours.
Filter member;

Contains a composition for removing harmful gas adhered to the filter member,

The harmful gas removal composition is 2 to 10 parts by weight of an acidic material containing an amine group (-NH 2 ), 5 to 20 parts by weight of phosphoric acid (H 3 PO 4 ), 0.001 to 0.005 parts by weight of platinum (Pt) And a residual amount of solvent.
The method of claim 9,

The acidic material containing the amine group, a filter containing para-aminobenzoic acid (sulfanilic acid) or para-aminobenzoic acid (sulfanilic acid).
The method of claim 9,

The residual amount of solvent, the filter containing water (H 2 O).
The method of claim 11,

The water filter having a 70 to 90 parts by weight.
The method of claim 9,

The filter member,

A first filter member formed in a flat plate shape;

A second filter member formed in a wave shape; And

An air passage is formed between the first filter member and the second filter member,

And the first filter member and the second filter member are stacked alternately with each other.
The method of claim 13,

The filter of claim 1, wherein the first filter member or the second filter member is made of polypropylene.
case;

An air filtration unit mounted to the case and to which a composition for removing harmful gas is adhered;

An air flow unit for flowing air to the air filtration unit; And

It includes a heat exchanger for cooling or heating the air filtered in the air filter,

The harmful gas removal composition is 2 to 10 parts by weight of an acidic material containing an amine group (-NH 2 ), 5 to 20 parts by weight of phosphoric acid (H 3 PO 4 ), 0.001 to 0.005 parts by weight of platinum (Pt) And a residual amount of solvent.