CN105289155A - Method for purifying household coal stove flue gas - Google Patents
Method for purifying household coal stove flue gas Download PDFInfo
- Publication number
- CN105289155A CN105289155A CN201510781452.2A CN201510781452A CN105289155A CN 105289155 A CN105289155 A CN 105289155A CN 201510781452 A CN201510781452 A CN 201510781452A CN 105289155 A CN105289155 A CN 105289155A
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- CN
- China
- Prior art keywords
- flue gas
- adsorption element
- coal stove
- household coal
- briquet stove
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Catalysts (AREA)
Abstract
The invention discloses a method for purifying household coal stove flue gas. An exhaust end of the household coal stove is provided with a first adsorption part, a catalyzing part and a second adsorption part in a flue gas flowing direction in order. Concentrations of CO, SOx and NOx in the purified household coal stove flue gas are lower than 0.5mg/m<3>, and pollution of the household coal stove upon the atmosphere environment is greatly reduced.
Description
Technical field
The present invention relates to technical field of air purification, be specifically related to a kind of domestic briquet stove flue gas purifying method.
Background technology
Research shows, in north of China region, winter, haze belonged to multiple season, and its pollution level and haze number of days will far away higher than spring and autumns.
Haze weather is a kind of atmosphere pollution state, haze is the general statement to suspended particulate substance content overproof various in air, and especially PM2.5 (equivalent aerodynamic diameter is less than or equal to the particle of 2.5 microns) is considered to " arch-criminal " that cause haze weather.Sulfur dioxide, nitrogen oxide and pellet are the main compositions of haze.
In early or mid November, 2015, the city being representative with Shenyang and other places, its haze PM2.5 index reaches surprising 1140, belongs to serious pollution.Under this kind of environment, pollutant not only injures the respiratory system of people, and the organs such as eyes also can be caused to produce burning sensation, the health of damage eyes.
Causing in numerous reasons that winter, haze number of days increased, fire coal is a key factor.For main equipments such as coal-burning boilers, because the requirement of discharging standards, generally gas cleaning can be carried out.But for resident's heating, the coal furnace used of cooking, due to its small scale, service time is irregular, be difficult to process on a large scale, so there is no corresponding cleaning equipment and method, its flue gas produced directly enters air, pollute environment, increase the weight of the degree of haze.
Summary of the invention
The object of the invention is to the flue gas purifying method proposing a kind of applicable domestic briquet stove, it adopts specific filter course, Catalytic Layer and adsorption layer, comes dust, oxysulfide, nitrogen oxide and oxycarbide in the flue gas of purifying domestic household coal stove generation.
For reaching this object, the present invention by the following technical solutions:
A kind of domestic briquet stove flue gas purifying method, it is placed with the first adsorption element, catalytic member and the second adsorption element at the exhaust end of domestic briquet stove according to the direction order of flow of flue gas.
Described first adsorption element is provided with asbestos fibre filter course.
Described catalytic member is provided with catalyst layer, and described catalyst comprises following component,
A) the β type ferrosilite of 5%, shown in described β type ferrosilite is composed as follows:
(x+y)M
(2/n)O·xFe
2O
3·yAl
2O
3·zSiO
2·wH
2O
In formula, M represents cation, and n is the valence of cation M, x+y+z=1, z/x to be 100-220, w be more than 1 positive integer;
B) V doped with Ce of 10%
2o
5/ (MoO
3)
x(WO
3)
1-xwith TiO
2mixture, Ce:V
2o
5/ (MoO
3)
x(WO
3)
1-x: TiO
2mol ratio be 0.25:1:2, and described titanium dioxide is anatase crystal, and described x is 0.2;
C) the SAPO-34 molecular sieve of surplus.
Described second adsorption element is provided with activated carbon adsorption layer.
Method operation principle of the present invention is as follows:
Fire coal burns in domestic briquet stove, and produce flue gas, flue gas mainly comprises dust, CO, CO
2, SO
x, NO
x.Described flue gas enters exhaust end, and due to the restriction of radiating rate, the temperature of the exhaust end flue gas of domestic briquet stove still belongs to higher temperature, and its temperature is between 50-400 DEG C.
First described flue gas enters the first adsorption element, and described first adsorption element parts are provided with asbestos fibre filter course.Because asbestos belong to exotic material, therefore it can be applicable to described high-temperature flue gas.The materials such as the dust in flue gas, coal ash are under the filtration of asbestos fibre, and be accumulated in the side of asbestos fibre, along with the accumulation of dust, coal ash, it is natural subsidence under gravity, enters the ash discharging hole below the first adsorption element.The material such as dust, coal ash from external opening, can be discharged flue by ash discharging hole.
Air after filtering enters catalytic member subsequently, in catalytic member, under the catalytic action of catalyst, and CO, SO of air state at a middle or low price
xand NO
xwith the O in flue gas
2at high temperature be oxidized to CO
2, SO
2and NO
2deng high price form.
Air after catalysis, enters the second adsorption element.SO in charcoal absorption flue gas in second adsorption element
2and NO
2, after certain interval of time, described second adsorption element is taken out and washes, then eliminate the SO in active carbon
2and NO
2, thus achieve the regeneration of active carbon.
First adsorption element of the present invention, catalytic member and the second adsorption element all can make the shape adapted to chimney size, and exist with the form of grid superimposed layer.In use, directly described first adsorption element, catalytic member and the second adsorption element are placed in the flue of coal stove, after using a period of time, take out cleaning, continue to use.
Method of the present invention, utilizes easy first adsorption element, catalytic member and the second adsorption element to be placed in the flue of domestic briquet stove, greatly reduces the content of pollutant in flue gas, through measuring, and CO, SO in the domestic briquet stove flue gas of purification
xand NO
xconcentration all lower than 0.5mg/m
3.Greatly reduce the pollution of domestic briquet stove to atmospheric environment.
Detailed description of the invention
The present invention is described breathing mask of the present invention by following embodiment.
Embodiment 1
A kind of domestic briquet stove flue gas purifying method, it is placed with the first adsorption element, catalytic member and the second adsorption element at the exhaust end of domestic briquet stove according to the direction order of flow of flue gas.
Described first adsorption element is provided with asbestos fibre filter course.
Described catalytic member is provided with catalyst layer, and described catalyst comprises following component,
A) the β type ferrosilite of 5%, shown in described β type ferrosilite is composed as follows:
(x+y)M
(2/n)O·xFe
2O
3·yAl
2O
3·zSiO
2·wH
2O
In formula, M represents cation, and n is the valence of cation M, x+y+z=1, z/x to be 100-220, w be more than 1 positive integer;
B) V doped with Ce of 10%
2o
5/ (MoO
3)
x(WO
3)
1-xwith TiO
2mixture, Ce:V
2o
5/ (MoO
3)
x(WO
3)
1-x: TiO
2mol ratio be 0.25:1:2, and described titanium dioxide is anatase crystal, and described x is 0.2;
C) the SAPO-34 molecular sieve of surplus.
Described second adsorption element is provided with activated carbon adsorption layer.
Light domestic briquet stove, the fire coal that coal stove adopts is commercial fire coal, for testing its purification function, after fire coal takes fire 5 minutes, tests the flue gas through purification, after testing, and CO, SO in flue gas
xand NO
xconcentration all lower than 0.5mg/m
3.
Comparative example 1
Component A content 15%, not containing B component, all the other conditions are constant, CO, SO in flue gas
xand NO
xconcentration all higher than 2mg/m
3.
Comparative example 2
B component content 15%, not containing component A, all the other conditions are constant, CO, SO in flue gas
xand NO
xconcentration all higher than 2mg/m
3.
Comparative example 3
The SAPO-34 molecular sieve of component C is replaced with alundum (Al2O3), and all the other conditions are constant, CO, SO in flue gas
xand NO
xconcentration all higher than 2mg/m
3.
Above-described embodiment and comparative example illustrate, there is specific contact between catalyst carrier of the present invention, omit or replace wherein one or more, all can not reach the certain effects of the application, prove to which create cooperative effect.
Applicant states, the present invention illustrates the catalyst of breathing mask of the present invention and employing by above-described embodiment, but the present invention is not limited to above-mentioned catalyst, does not namely mean that the present invention must rely on above-mentioned detailed catalysts and could implement.Person of ordinary skill in the field should understand, any improvement in the present invention, to equivalence replacement and the interpolation of auxiliary element, the concrete way choice etc. of each raw material of product of the present invention, all drops within protection scope of the present invention and open scope.
Claims (1)
1. a domestic briquet stove flue gas purifying method, it is placed with the first adsorption element, catalytic member and the second adsorption element at the exhaust end of domestic briquet stove according to the direction order of flow of flue gas.
Described first adsorption element is provided with asbestos fibre filter course.
Described catalytic member is provided with catalyst layer, and described catalyst comprises following component,
A) the β type ferrosilite of 5%, shown in described β type ferrosilite is composed as follows:
(x+y)M
(2/n)O·xFe
2O
3·yAl
2O
3·zSiO
2·wH
2O
In formula, M represents cation, and n is the valence of cation M, x+y+z=1, z/x to be 100-220, w be more than 1 positive integer;
B) V doped with Ce of 10%
2o
5/ (MoO
3)
x(WO
3)
1-xwith TiO
2mixture, Ce:V
2o
5/ (MoO
3)
x(WO
3)
1-x: TiO
2mol ratio be 0.25:1:2, and described titanium dioxide is anatase crystal, and described x is 0.2;
C) the SAPO-34 molecular sieve of surplus.
Described second adsorption element is provided with activated carbon adsorption layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510781452.2A CN105289155A (en) | 2015-11-14 | 2015-11-14 | Method for purifying household coal stove flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510781452.2A CN105289155A (en) | 2015-11-14 | 2015-11-14 | Method for purifying household coal stove flue gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105289155A true CN105289155A (en) | 2016-02-03 |
Family
ID=55187386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510781452.2A Pending CN105289155A (en) | 2015-11-14 | 2015-11-14 | Method for purifying household coal stove flue gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105289155A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101104133A (en) * | 2006-07-12 | 2008-01-16 | 北京华夏金安环保科技有限公司 | Air purifying method and device thereof |
| US20080092744A1 (en) * | 2006-10-18 | 2008-04-24 | Scott Storbo | Apparatus for preventing or reducing the oxidation of food |
| CN101462054A (en) * | 2007-12-18 | 2009-06-24 | 东曹株式会社 | Catalyst for reducing nitrogen oxides and process for reducing nitrogen oxides |
| CN103785255A (en) * | 2013-12-18 | 2014-05-14 | 广西高中阀门制造有限责任公司 | Efficient fuel gas treatment system for boiler |
-
2015
- 2015-11-14 CN CN201510781452.2A patent/CN105289155A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101104133A (en) * | 2006-07-12 | 2008-01-16 | 北京华夏金安环保科技有限公司 | Air purifying method and device thereof |
| US20080092744A1 (en) * | 2006-10-18 | 2008-04-24 | Scott Storbo | Apparatus for preventing or reducing the oxidation of food |
| CN101462054A (en) * | 2007-12-18 | 2009-06-24 | 东曹株式会社 | Catalyst for reducing nitrogen oxides and process for reducing nitrogen oxides |
| CN103785255A (en) * | 2013-12-18 | 2014-05-14 | 广西高中阀门制造有限责任公司 | Efficient fuel gas treatment system for boiler |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160203 |
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| RJ01 | Rejection of invention patent application after publication |