CN109126313A - Bag-type dusting and catalytic denitration, de- dioxin integrated apparatus - Google Patents
Bag-type dusting and catalytic denitration, de- dioxin integrated apparatus Download PDFInfo
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- CN109126313A CN109126313A CN201811085333.3A CN201811085333A CN109126313A CN 109126313 A CN109126313 A CN 109126313A CN 201811085333 A CN201811085333 A CN 201811085333A CN 109126313 A CN109126313 A CN 109126313A
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- bag
- bag cage
- catalyst
- dioxin
- catalysis
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
- B01D46/023—Pockets filters, i.e. multiple bag filters mounted on a common frame
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
- B01D46/04—Cleaning filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8668—Removing organic compounds not provided for in B01D53/8603 - B01D53/8665
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention discloses bag-type dustings and catalytic denitration, de- dioxin integrated apparatus.The bag cage being mounted in bag-type duster filtering bag is catalysis bag cage, and the catalysis bag cage, using wire mesh bag cage as matrix, supported catalyst, the wire mesh contains metallic fiber；The preparation process of the catalysis bag cage is: wire mesh bag cage is immersed in hanging in adhesive, lift and is placed in closed cabinet, catalyst powder is ejected into cabinet, powder is deposited in metallic fiber surface hanging powder under adhesive effect, finally the bag cage after hanging powder is sent to heating furnace, under high temperature action, adhesive volatilization burning, catalyst granules is sintered and is attached to wire mesh surface, realizes catalyst load.Flue gas bag-type dusting and catalytic denitration or de- dioxin are carried out organic composite by the present invention, realize that flue gas ash removal denitration or de- dioxin synergistic purification reduce number of devices to be effectively utilized deduster inner space, land occupation is saved, construction investment and operating cost are reduced.
Description
Technical field
The present invention relates to environmental technology field, more particularly to particulate matter in industrial smoke and nitrogen oxides cooperation-removal or
The bag-type dusting of particulate matter and dioxin cooperation-removal and catalytic denitration, de- dioxin integrated apparatus.
Background technique
Often contain particulate matter (PM) and nitrogen oxides (NO in industrial smoke x ), also contain in its flue gas of some special industries
Dioxin should carry out the poisonous and harmful substances such as particulate matter, nitrogen oxides and dioxin in flue gas net according to environmental requirement
Change, qualified discharge.
By taking removal of nitrogen oxide as an example, common flue gases purification scheme is first using selective catalytic reduction in engineering
(SCR) device denitration, then particulate matter is removed with sack cleaner；Or first remove particulate matter with sack cleaner, then in using it is low
Warm SCR reactor denitration.The common drawback of both technical solutions is will to be independently arranged SCR reactor and sack cleaner two
Kind device, equipment is more, land occupation is big, investment is high, operation energy consumption and cost are high.
The patent document of application number 201420029776.1 attempts for bag-type dusting and catalytic denitration reactor to be combined into one,
SCR catalytic denitration reactor is arranged on bag house outlet downward-flow flue, two equipment are combined into one makeup
It sets, but a kind of such combination only simple merging and deformation, the composition of sack cleaner and SCR catalytic denitration reactor is not
Have generation essential change, the critical components such as filter bag, bag cage, cellular catalyst are not reduced, fail really to realize dedusting with
The synergistic purification of denitration.
U.S. Gore company is it is proposed that the technology based on bag-type dusting denitration simultaneously or de- dioxin, technical solution are
The supported catalyst on the filter bag of sack cleaner makes filter bag while having the dual function of filtering and catalytic denitration or de- dioxin
Can, have been achieved with industrial application.But the technology there are complex technical process, manufacture difficulty is big the disadvantages of, because filter media fibre is a variety of
Multiplicity, denitration effect is unstable after load, and at high cost.
It is not difficult to find out that people are attempting to look for a kind of superior technique scheme, it is expected to solve the above problems.
Summary of the invention
The purpose of the present invention is more for existing flue gas ash removal and denitration or de- dioxin process equipment, land occupation is big, investment
Height lacks the problem that the problem of synergistic effect, especially filtrate supported catalyst are difficult, effect is unstable, at high cost, provides
A kind of bag-type dusting and catalytic denitration, de- dioxin integrated apparatus, reach dedusting and denitration or de- dioxin synergistic effect.
To realize goal of the invention, one aspect of the present invention provides sack cleaner and is catalyzed bag cage, is mounted on bag-type dusting
Bag cage in device filter bag is catalysis bag cage, and the catalysis bag cage, using wire mesh bag cage as matrix, supported catalyst is described
Wire mesh contains metallic fiber；The preparation process of the catalysis bag cage is: wire mesh bag cage being immersed in adhesive and is hung
Slurry, lifts and is placed in closed cabinet, catalyst powder is ejected into cabinet, and powder is deposited in gold under adhesive effect
Belong to fiber surface hanging powder, finally send the bag cage after hanging powder to heating furnace, under high temperature action, adhesive volatilization burning, catalysis
Agent particle is sintered and is attached to wire mesh surface, realizes catalyst load.
The catalyst of the catalysis bag cage load, active constituent are selected according to the physicochemical property for being removed gaseous pollutant
It selects, including noble metal catalyst, metal oxide catalyst；Noble metal catalyst includes but is not limited to Ag, Pt, Pd；Metal oxygen
Compound catalyst includes but is not limited to Al2O3、TiO2、RhV2O5、WO3、MoO3、CuO、Fe2O3.The ingredient of described adhesive and match
Than being determined according to catalyst type, intensity of load and sintering temperature, the ingredient of adhesive includes but is not limited to Methyl cellulose
Element, glass fibre, glycerol, polyacrylamide, stearic acid, polypropylene.
The wire mesh bag cage is designed to multi-layer braided silk screen, foam metal, metal fiber felt, fiberfill formula, with
Increase specific surface area.
The wire mesh bag cage is cylindrical shape, oval cylinder, rectangle.
Another aspect of the present invention is provided integrally is disguised using the bag-type dusting of catalysis bag cage and denitration, de- dioxin
It sets, including air inlet, filter chamber, card, filter bag, catalysis bag cage, ash bucket, air-purifying chamber, deashing device, air outlet, reaction gas
Injection apparatus, reaction gas injection apparatus are arranged in air inlet；The application of the catalysis bag cage is support filter bag, is catalyzed simultaneously
Denitration or de- dioxin, catalytic denitration select Al2O3Catalyst is catalyzed de- dioxin and selects TiO2Catalyst；Reaction gas injection
The gas that device is sprayed determines, denitrating flue gas reaction gas injection apparatus according to the gaseous pollutant physicochemical property being removed
It is reducing agent NH3Injection apparatus, it is oxidant O that flue gas, which takes off dioxin reaction gas injection apparatus,2Injection apparatus；It is logical to be catalyzed bag cage
It crosses catalytic action and decomposes NO x For N2And H2O；Or decomposing dioxin is H2O、CO2And HCl；Based on this, apparatus of the present invention shape on the whole
At a kind of integrated apparatus, while dust removal by filtration can also catalytic denitration or de- dioxin, there is dedusting denitration or de-
Dioxin synergistic purification function.
The deashing device includes pulse jetting deashing, anti-blow cleaning dust, draft deashing pattern.
The working principle of apparatus of the present invention is: by taking dedusting denitration as an example, spraying when flue gas passes through air inlet with ammonia-gas spraying device
Ammonia (reducing agent) be sufficiently mixed after enter filter chamber, through sock filtration removal flue gas in particulate matter (outside filtering type), simultaneously
Denitration (selective catalytic reduction reaction) is completed under the catalytic action of catalysis bag cage, makes NO x It is reduced into N2And H2O, it is purified
Flue gas inside bag cage to it is lower and it is upper air-purifying chamber is entered by card hole, finally from air outlet discharge.When filter bag surface dust is poly-
When product arrives certain thickness, filtration resistance becomes larger, and control system issues instruction, and deashing device, which is started to work, carries out deashing to filter bag,
The dust settling to fall off is finally discharged from ash discharging hole into ash bucket.
The beneficial effects of the present invention are: flue gas bag-type dusting and catalytic denitration or de- dioxin are carried out organic composite, lead to
The supported catalyst in bag cage is crossed, dedusting and denitration or de- dioxin integrated apparatus is formed, has the function of dual-use, it is real
Showing flue gas ash removal denitration or de- dioxin synergistic purification reduces number of devices to be effectively utilized deduster inner space,
Land occupation is saved, construction investment and operating cost are reduced.
Detailed description of the invention
Fig. 1 is bag-type dusting and catalytic denitration, de- dioxin integrated apparatus.
Fig. 2 is card, filter bag and catalysis bag cage node full-page proof.
Fig. 3 is catalysis bag cage supported catalyst.
In figure: 1. air inlets；2. filter chamber；3. card；4. filter bag；5. being catalyzed bag cage；51. metallic fiber；52. catalyst
Particle；6. ash bucket；7. air-purifying chamber；8. deashing device；9. air outlet；10. reaction gas injection apparatus.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below
Not constituting a conflict with each other can be combined with each other.
As shown in Figure 1, bag-type dusting and catalytic denitration, de- dioxin integrated apparatus, including air inlet 1, filter chamber 2,
Card 3, filter bag 4, catalysis bag cage 5, ash bucket 6, air-purifying chamber 7, deashing device 8, air outlet 9, reaction gas injection apparatus 10, reaction
Gas injection apparatus 10 is arranged in air inlet 1；Reaction gas injection apparatus 10 connects NH3Or connect O2；Air inlet 1 is welded on
The side of filter chamber 2, filter chamber 2 are welded with card 3 above, and filter bag 4 is equipped on card hole and is catalyzed bag cage 5, under filter chamber 2
Face is welded with ash bucket 6；3 top of card is welded with air-purifying chamber 7, and deashing device 8, the side of air-purifying chamber 7 are equipped with inside air-purifying chamber 7
It is welded with air outlet 9.
As shown in Fig. 2, catalysis bag cage 5 is mounted in filter bag 4, filter bag 4 is mounted on the card hole of card 3.
As shown in figure 3, catalysis bag cage 5, using wire mesh bag cage as matrix, supported catalyst, the wire mesh contains
There is metallic fiber 51；The preparation process of the catalysis bag cage is: wire mesh bag cage being immersed in hanging in adhesive, after lifting
It is placed in closed cabinet, catalyst powder is ejected into cabinet, powder is deposited in metallic fiber 51 under adhesive effect
Surface hanging powder finally send the bag cage after hanging powder to heating furnace, under high temperature action, adhesive volatilization burning, and catalyst granules
52 are sintered and are attached to wire mesh surface, realize catalyst load.
Bag-type dusting and catalytic denitration, de- dioxin integrated apparatus run work, by taking dedusting denitration as an example, device installation
Flue gas is connected after the completion, and flue gas passes through ammonia (the reducing agent NH sprayed when air inlet 1 with ammonia-gas spraying device 103) be sufficiently mixed it is laggard
Enter filter chamber 2, filter the particulate matter in removal flue gas through filter bag 4, while completing denitration under the catalytic action of catalysis bag cage 5,
Selective catalytic reduction reaction makes NO x It is reduced into N2And H2O, purified flue gas catalysis bag cage 5 inside to it is lower and on pass through
Card hole enters air-purifying chamber 7, is finally discharged from air outlet 9.When 4 surface dust of filter bag is accumulated to certain thickness, filtration resistance
Become larger, control system issues instruction, and deashing device 8, which is started to work, carries out deashing, the dust settling to fall off to ash bucket 6 to filter bag 4
In, finally it is discharged from ash discharging hole.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should all include
Within protection scope of the present invention.
Claims (7)
1. sack cleaner is catalyzed bag cage, which is characterized in that the bag cage being mounted in bag-type duster filtering bag is catalysis bag cage, institute
Catalysis bag cage is stated, using wire mesh bag cage as matrix, supported catalyst, the wire mesh contains metallic fiber；It is described to urge
The preparation process for changing bag cage is: wire mesh bag cage is immersed in hanging in adhesive, lifts and is placed in closed cabinet, it will
Catalyst powder is ejected into cabinet, and powder is deposited in metallic fiber surface hanging powder under adhesive effect, finally will be after hanging powder
Bag cage send to heating furnace, under high temperature action, adhesive volatilization burning, catalyst granules is sintered and is attached to wire netlist
Catalyst load is realized in face.
2. sack cleaner according to claim 1 is catalyzed bag cage, which is characterized in that the catalysis of the catalysis bag cage load
Agent, active constituent are selected according to the physicochemical property for being removed gaseous pollutant, including noble metal catalyst, metal oxide
Catalyst；Noble metal catalyst includes but is not limited to Ag, Pt, Pd；Metal oxide catalyst includes but is not limited to Al2O3、
TiO2、RhV2O5、WO3、MoO3、CuO、Fe2O3。
3. sack cleaner according to claim 1 is catalyzed bag cage, which is characterized in that the ingredient of the binder and match
Than being determined according to catalyst type, intensity of load and sintering temperature, the ingredient of adhesive includes but is not limited to Methyl cellulose
Element, glass fibre, glycerol, polyacrylamide, stearic acid, polypropylene.
4. sack cleaner according to claim 1 is catalyzed bag cage, which is characterized in that the wire mesh bag cage is designed to
Multi-layer braided silk screen, foam metal, metal fiber felt, fiberfill formula.
5. sack cleaner according to claim 1 is catalyzed bag cage, which is characterized in that the wire mesh bag cage is cylinder
Shape, oval cylinder, rectangle.
6. using the bag-type dusting of any one of the claim 1-5 catalysis bag cage and denitration, de- dioxin integrated apparatus,
It is characterized in that, including air inlet, filter chamber, card, filter bag, catalysis bag cage, ash bucket, air-purifying chamber, deashing device, air outlet, anti-
Gas injection apparatus is answered, reaction gas injection apparatus is arranged in air inlet；The application of the catalysis bag cage is support filter bag, together
When catalytic denitration or de- dioxin, catalytic denitration selects Al2O3Catalyst is catalyzed de- dioxin and selects TiO2Catalyst；Reaction gas
The gas that body injection apparatus is sprayed determines that denitrating flue gas reaction gas is sprayed according to the gaseous pollutant physicochemical property being removed
Injection device is reducing agent NH3Injection apparatus, it is oxidant O that flue gas, which takes off dioxin reaction gas injection apparatus,2Injection apparatus；Catalysis
Bag cage decomposes NO by catalytic action x For N2And H2O；Or decomposing dioxin is H2O、CO2And HCl.
7. bag-type dusting according to claim 6 and denitration, de- dioxin integrated apparatus, which is characterized in that described clear
Apparatus for ash includes pulse jetting deashing, anti-blow cleaning dust, draft deashing pattern.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811085333.3A CN109126313B (en) | 2018-09-18 | 2018-09-18 | Bag type dust removal, catalytic denitration and dioxin removal integrated device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811085333.3A CN109126313B (en) | 2018-09-18 | 2018-09-18 | Bag type dust removal, catalytic denitration and dioxin removal integrated device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109126313A true CN109126313A (en) | 2019-01-04 |
| CN109126313B CN109126313B (en) | 2020-07-21 |
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| CN201811085333.3A Active CN109126313B (en) | 2018-09-18 | 2018-09-18 | Bag type dust removal, catalytic denitration and dioxin removal integrated device |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109663500A (en) * | 2019-03-04 | 2019-04-23 | 浙江深度能源技术有限公司 | A kind of mostly de- bag filter of smoke catalytic |
| CN111013348A (en) * | 2019-12-23 | 2020-04-17 | 西安西矿环保科技有限公司 | Dust and nitrate integrated system and method suitable for multi-dust section in cement kiln |
| CN111603911A (en) * | 2020-06-29 | 2020-09-01 | 北京中航天业科技有限公司 | Dedusting, desulfurization and denitrification multifunctional integrated control system, method and application |
| CN112546854A (en) * | 2020-11-21 | 2021-03-26 | 西安热工研究院有限公司 | Selective thermal sintering molding 3D printing dioxin removal bag cage and preparation method thereof |
| CN113413696A (en) * | 2021-08-06 | 2021-09-21 | 中国科学院工程热物理研究所 | Combined process for simultaneously treating dust and VOCs and novel filter |
| CN113813697A (en) * | 2021-08-06 | 2021-12-21 | 中国科学院工程热物理研究所 | Metal fiber filter material with dust removal and VOCs (volatile organic compounds) catalytic purification functions and preparation method thereof |
| WO2022040831A1 (en) * | 2020-08-23 | 2022-03-03 | 南京溧水高新创业投资管理有限公司 | Candle-type low pressure drop particle packed bed reactor |
| CN114768401A (en) * | 2022-05-25 | 2022-07-22 | 江苏安达环保科技有限公司 | Processing technology for adding SCR denitration catalyst coating on metal fiber filter bag |
| CN115282773A (en) * | 2022-08-23 | 2022-11-04 | 山东菲天环保科技有限公司 | Catalytic denitration post |
| CN116173632A (en) * | 2023-03-30 | 2023-05-30 | 江苏安达环保科技有限公司 | Metal fiber catalytic filter bag processing equipment |
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| CN106975473A (en) * | 2017-05-27 | 2017-07-25 | 苏州思美特表面材料科技有限公司 | The supported materials catalyst of network structure |
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| CN104190160A (en) * | 2014-09-01 | 2014-12-10 | 浙江理工大学 | Filter material for decomposition of dioxin in high temperature smoke dust and preparation method of filter material |
| CN104492260A (en) * | 2014-12-31 | 2015-04-08 | 江苏科行环境工程技术有限公司 | Glass kiln flue gas dust removal and denitration integrated process and device |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109663500A (en) * | 2019-03-04 | 2019-04-23 | 浙江深度能源技术有限公司 | A kind of mostly de- bag filter of smoke catalytic |
| CN111013348A (en) * | 2019-12-23 | 2020-04-17 | 西安西矿环保科技有限公司 | Dust and nitrate integrated system and method suitable for multi-dust section in cement kiln |
| CN111603911A (en) * | 2020-06-29 | 2020-09-01 | 北京中航天业科技有限公司 | Dedusting, desulfurization and denitrification multifunctional integrated control system, method and application |
| WO2022040831A1 (en) * | 2020-08-23 | 2022-03-03 | 南京溧水高新创业投资管理有限公司 | Candle-type low pressure drop particle packed bed reactor |
| CN112546854A (en) * | 2020-11-21 | 2021-03-26 | 西安热工研究院有限公司 | Selective thermal sintering molding 3D printing dioxin removal bag cage and preparation method thereof |
| CN112546854B (en) * | 2020-11-21 | 2023-03-31 | 西安热工研究院有限公司 | Selective thermal sintering molding 3D printing dioxin removal bag cage and preparation method thereof |
| CN113413696A (en) * | 2021-08-06 | 2021-09-21 | 中国科学院工程热物理研究所 | Combined process for simultaneously treating dust and VOCs and novel filter |
| CN113813697A (en) * | 2021-08-06 | 2021-12-21 | 中国科学院工程热物理研究所 | Metal fiber filter material with dust removal and VOCs (volatile organic compounds) catalytic purification functions and preparation method thereof |
| CN114768401A (en) * | 2022-05-25 | 2022-07-22 | 江苏安达环保科技有限公司 | Processing technology for adding SCR denitration catalyst coating on metal fiber filter bag |
| CN115282773A (en) * | 2022-08-23 | 2022-11-04 | 山东菲天环保科技有限公司 | Catalytic denitration post |
| CN116173632A (en) * | 2023-03-30 | 2023-05-30 | 江苏安达环保科技有限公司 | Metal fiber catalytic filter bag processing equipment |
| CN116173632B (en) * | 2023-03-30 | 2023-10-13 | 江苏安达环保科技有限公司 | Metal fiber catalytic filter bag processing equipment |
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