CN110721549A - Electrostatic-metal ceramic filtering dust removal device for synergistic desulfurization and denitrification - Google Patents
Electrostatic-metal ceramic filtering dust removal device for synergistic desulfurization and denitrification Download PDFInfo
- Publication number
- CN110721549A CN110721549A CN201911097529.9A CN201911097529A CN110721549A CN 110721549 A CN110721549 A CN 110721549A CN 201911097529 A CN201911097529 A CN 201911097529A CN 110721549 A CN110721549 A CN 110721549A
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- Prior art keywords
- metal ceramic
- shell
- flue gas
- dust
- electrostatic
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- 239000000428 dust Substances 0.000 title claims abstract description 48
- 239000000919 ceramic Substances 0.000 title claims abstract description 33
- 239000002184 metal Substances 0.000 title claims abstract description 33
- 238000001914 filtration Methods 0.000 title claims abstract description 20
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 19
- 230000003009 desulfurizing Effects 0.000 title claims abstract description 19
- 230000002195 synergetic Effects 0.000 title claims description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000003546 flue gas Substances 0.000 claims abstract description 31
- 239000000956 alloy Substances 0.000 claims abstract description 5
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 5
- REDXJYDRNCIFBQ-UHFFFAOYSA-N aluminium(3+) Chemical class [Al+3] REDXJYDRNCIFBQ-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000011195 cermet Substances 0.000 claims description 9
- 239000003054 catalyst Substances 0.000 claims description 8
- 239000002131 composite material Substances 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 4
- 229910002089 NOx Inorganic materials 0.000 abstract description 3
- 229910052815 sulfur oxide Inorganic materials 0.000 abstract description 3
- RAHZWNYVWXNFOC-UHFFFAOYSA-N sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 8
- 238000000746 purification Methods 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 241000893018 Armeria Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
-
- 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
- B01D53/8637—Simultaneously removing sulfur oxides and nitrogen oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
Abstract
The invention discloses an electrostatic-metal ceramic filtering dust removal device for coordinated desulfurization and denitrification, which comprises a shell, wherein an air inlet is formed in one side of the upper end of the shell, a pressure gauge is arranged on the inner wall of the shell, an air outlet is formed in one side of the lower end of the shell, and an induced draft fan is connected to the air outlet; the center of the dust removing device is provided with a discharge electrode, the dust collecting electrode is provided with two layers of metal ceramic sleeves, the aperture of a filter hole on the wall of each layer of metal ceramic sleeve is different, and the electrode and the metal ceramic sleeves are fixed on an alloy plate; the lower end of the shell is provided with an ash bucket. The device can accomplish the dust removal and the SOx/NOx control of flue gas simultaneously, and the effect that the flue gas was handled is better, and is efficient, resources are saved.
Description
Technical Field
The invention belongs to the field of flue gas purification, and particularly relates to an electrostatic-metal ceramic filtering and dust removing device for synergistic desulfurization and denitrification.
Background
With the rapid development of modern industry in China, the problem of environmental pollution is increasingly aggravated, and mainly because the coal is used as a main energy structure in China, and the flue gas discharged by coal combustion contains a large amount of dust, sulfur dioxide, oxynitride and other impurities, the discharge of the dust, the sulfur dioxide and the oxynitride is urgently controlled. To the flue gas dust removal and SOx/NOx control problem of power plant, the predecessor has done a large amount of experimental research, however, traditional clean system, dust collector, desulphurization unit, denitrification facility only can work alone, and the operation is with high costs of maintaining, removes dust simultaneously and SOx/NOx control can practice thrift running cost and occupation of land space greatly, improves the efficiency that the smoke and dust was handled simultaneously.
Disclosure of Invention
The invention aims to provide an electrostatic-cermet filtering dust removal device for synergistic desulfurization and denitrification, so as to solve the problems in the background technology.
The invention discloses an electrostatic-metal ceramic filtering dust removal device for coordinated desulfurization and denitrification, which comprises a shell, wherein an air inlet is formed in one side of the upper end of the shell, a pressure gauge is arranged on the inner wall of the shell, an air outlet is formed in one side of the lower end of the shell, and an induced draft fan is connected to the air outlet; the center of the dust removing device is provided with a discharge electrode, the dust collecting electrode is provided with two layers of metal ceramic sleeves, the aperture of a filter hole on the wall of each layer of metal ceramic sleeve is different, and the electrode and the metal ceramic sleeves are fixed on an alloy plate; the lower end of the shell is provided with an ash bucket.
Preferably, the metal ceramic sleeve is divided into an inner layer and an outer layer, the inner layer is a metal ceramic filter cylinder with good conductivity, and the filter pore diameter on the cylinder wall is smaller, so that the electrostatic-filtration composite dust removal of dust in flue gas is realized; the filtering aperture of the outer metal ceramic sleeve is larger, and the resistance of the dedusted flue gas is smaller when the dedusted flue gas passes through.
Preferably, a desulfurization and denitrification catalyst is attached to the wall of the filter cylinder on the outer layer of the metal ceramic sleeve and the filter holes, and the flue gas after dust removal can be simultaneously desulfurized and denitrated when passing through the filter cylinder on the outer layer.
Compared with the prior art, the invention has the following beneficial effects: according to the electrostatic-cermet filtering dust removal device with the synergistic desulfurization and denitrification functions, after flue gas enters from the gas inlet, under the action of the discharge electrode, dust in the flue gas is charged, moves towards the inner-layer cermet filter cylinder serving as the dust collection electrode under the action of an electric field force and is finally trapped on the surface of the cermet filter cylinder, and meanwhile, electrostatic-filtering composite dust removal on the flue gas is completed under the filtering action. The inner metal ceramic sleeve has air permeability and dust resistance, and can further filter smoke to further remove dust. The desulfurization and denitrification catalyst is attached to the filter holes in the wall of the outer-layer metal ceramic sleeve, and the flue gas after dust removal reaches the catalyst to react with the catalyst, so that the concentration of sulfur dioxide and oxynitride in the flue gas is reduced, and the purification of the flue gas is completed. The invention has good dust removal, desulfurization and denitrification effects, high efficiency and resource saving.
Drawings
FIG. 1 is a schematic structural diagram of the present invention
In the figure: the device comprises a shell 1, an air inlet 2, an air outlet 3, an induced draft fan 4, a discharge electrode 5, a metal ceramic sleeve 6, an alloy plate 7, a pressure gauge 8 and an ash hopper 9.
Detailed Description
The present invention will now be described more fully hereinafter with reference to the accompanying drawings.
The invention relates to an electrostatic-metal ceramic filtering dust removal device for coordinated desulfurization and denitrification, which comprises a shell 1, wherein an air inlet 2 is arranged on one side of the upper end of the shell, a pressure gauge 8 is arranged on the inner wall of the shell, an air outlet 3 is arranged on one side of the lower end of the shell, and the air outlet is connected with an induced draft fan 4; the center of the dust removing device is provided with a discharge electrode 5, a dust collecting electrode is a metal ceramic sleeve 6, the electrode and the metal ceramic sleeve are fixed on an alloy plate 7, and the lower end of the shell is provided with an ash bucket 9.
Specifically, the metal ceramic sleeve is divided into an inner layer and an outer layer, the inner layer is a metal ceramic filter cylinder with good conductivity, and the filter pore diameter on the cylinder wall is small, so that the electrostatic-filtration composite dust removal of dust in flue gas is realized; the filtering aperture of the outer metal ceramic sleeve is larger, and the resistance of the dedusted flue gas is smaller when the dedusted flue gas passes through.
Specifically, a desulfurization and denitrification catalyst is attached to the outer layer of the metal ceramic sleeve and the wall of the filter cylinder and the filter hole, and the dedusted flue gas can be simultaneously desulfurized and denitrated when passing through the outer layer of the filter cylinder.
The working principle is as follows: according to the electrostatic-cermet filtering dust removal device for coordinated desulfurization and denitrification, after flue gas enters from the gas inlet 2, under the action of the discharge electrode 5, dust in the flue gas is charged, the inner-layer cermet cylinder 6 is grounded to serve as a dust collection electrode, the charged dust in the flue gas is continuously collected, and preliminary dust removal on the flue gas is completed. Meanwhile, the inner metal ceramic sleeve 6 has air permeability and dust resistance, and can further filter smoke to further remove dust. The desulfurization and denitrification catalyst is attached to the filter holes in the wall of the outer-layer metal ceramic sleeve 6, and when the flue gas after dust removal reaches the filter holes, the flue gas reacts with the catalyst, so that the concentration of sulfur dioxide and oxynitride in the flue gas is reduced, and the purification of the flue gas is completed. The invention has good dust removal, desulfurization and denitrification effects, high efficiency and resource saving.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (3)
1. An electrostatic-cermet filtering dust removal device for coordinated desulfurization and denitrification comprises a shell (1), wherein an air inlet (2) is formed in one side of the upper end of the shell, a pressure gauge (8) is arranged on the inner wall of the shell, an air outlet (3) is formed in one side of the lower end of the shell, and the air outlet is connected with an induced draft fan (4); the center of the dust removing device is provided with a discharge electrode (5), the dust collecting electrode is a metal ceramic sleeve (6), the electrode and the metal ceramic sleeve are fixed on an alloy plate (7), and the lower end of the shell is provided with an ash bucket (9).
2. The electrostatic-cermet filtering dust-removing device for synergic desulfurization and denitrification according to claim 1, characterized in that: the metal ceramic sleeve (6) is divided into an inner layer and an outer layer, the inner layer is a metal ceramic filter cylinder with good conductivity, the filter pore diameter on the cylinder wall is small, and the electrostatic-filtration composite dust removal of dust in the flue gas is realized; the filtering aperture of the outer metal ceramic sleeve is larger, and the resistance of the dedusted flue gas is smaller when the dedusted flue gas passes through.
3. The electrostatic-cermet filtering dust-removing device for synergic desulfurization and denitrification according to claim 1, characterized in that: the outer layer of the metal ceramic sleeve (6) is attached to the wall of the filter cylinder and the inside of the filter hole, and a desulfurization and denitrification catalyst is attached to the outer layer of the filter cylinder, so that the flue gas after dust removal can be simultaneously desulfurized and denitrated when passing through the outer layer of the filter cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911097529.9A CN110721549A (en) | 2019-11-04 | 2019-11-04 | Electrostatic-metal ceramic filtering dust removal device for synergistic desulfurization and denitrification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911097529.9A CN110721549A (en) | 2019-11-04 | 2019-11-04 | Electrostatic-metal ceramic filtering dust removal device for synergistic desulfurization and denitrification |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110721549A true CN110721549A (en) | 2020-01-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911097529.9A Pending CN110721549A (en) | 2019-11-04 | 2019-11-04 | Electrostatic-metal ceramic filtering dust removal device for synergistic desulfurization and denitrification |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110721549A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112535941A (en) * | 2020-10-30 | 2021-03-23 | 矿冶科技集团有限公司 | Denitration and dust removal integrated purification equipment |
-
2019
- 2019-11-04 CN CN201911097529.9A patent/CN110721549A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112535941A (en) * | 2020-10-30 | 2021-03-23 | 矿冶科技集团有限公司 | Denitration and dust removal integrated purification equipment |
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