CN113842767A - Tail gas treatment method based on gravity and pulse bag type dust removal - Google Patents
Tail gas treatment method based on gravity and pulse bag type dust removal Download PDFInfo
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- CN113842767A CN113842767A CN202111236417.4A CN202111236417A CN113842767A CN 113842767 A CN113842767 A CN 113842767A CN 202111236417 A CN202111236417 A CN 202111236417A CN 113842767 A CN113842767 A CN 113842767A
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- 239000000428 dust Substances 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000005484 gravity Effects 0.000 title claims abstract description 17
- 239000007789 gas Substances 0.000 claims abstract description 109
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 11
- 235000011114 ammonium hydroxide Nutrition 0.000 claims abstract description 11
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000001816 cooling Methods 0.000 claims abstract description 10
- 238000001914 filtration Methods 0.000 claims abstract description 10
- 238000002156 mixing Methods 0.000 claims abstract description 10
- 239000003546 flue gas Substances 0.000 claims abstract description 7
- 235000019738 Limestone Nutrition 0.000 claims abstract description 6
- 239000006028 limestone Substances 0.000 claims abstract description 6
- 239000000843 powder Substances 0.000 claims abstract description 6
- PQUCIEFHOVEZAU-UHFFFAOYSA-N Diammonium sulfite Chemical compound [NH4+].[NH4+].[O-]S([O-])=O PQUCIEFHOVEZAU-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- 239000007791 liquid phase Substances 0.000 claims abstract description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 9
- 239000001301 oxygen Substances 0.000 claims description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- 238000000746 purification Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 238000006479 redox reaction Methods 0.000 claims description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 4
- 229910021529 ammonia Inorganic materials 0.000 claims description 4
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 claims description 4
- 230000017525 heat dissipation Effects 0.000 claims description 4
- 239000001257 hydrogen Substances 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
- 239000007769 metal material Substances 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000000779 smoke Substances 0.000 claims description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
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Classifications
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- 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
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/02—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising gravity
-
- 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
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/02—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath
- B01D47/021—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath by bubbling the gas through a liquid bath
-
- 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
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—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
- B01D53/76—Gas phase processes, e.g. by using aerosols
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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)
- Dispersion Chemistry (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a tail gas treatment method based on gravity and pulse bag type dust removal, and relates to the technical field of bag type dust collectors. The tail gas treatment method comprises the following steps: the method comprises the following steps: arranging a gas cooler, wherein the medium for cooling the high-temperature flue gas adopts air or water with low temperature; step two: atomizing the tail gas after dust removal is finished, and sending the tail gas into a dissolving tank for dust removal treatment to form tail gas with lower dust content; step three: heating the tail gas in the step two for 10 minutes to 500 ℃ to form high-temperature tail gas; introducing the high-temperature tail gas into ammonia water by using an air pump and a pipeline to fully contact the ammonia water to generate ammonium sulfite; step four: feeding the tail gas treated in the third step into a boiler furnace, fully mixing the tail gas with desulfurizer limestone powder, and reacting to generate calcium sulfate; step five: and (4) introducing the tail gas obtained in the step four into water by using an air pump and a pipeline to be in full contact with the water, and filtering the generated calcium sulfate to form a liquid-phase product.
Description
Technical Field
The invention relates to the technical field of bag type dust collectors, in particular to a tail gas treatment method based on gravity and pulse bag type dust collection.
Background
The bag type dust collector is a dry dust filtering device, which is suitable for collecting fine, dry and non-fibrous dust, a filter bag is made of woven filter cloth or non-woven felt, the filtering action of fiber fabric is utilized to filter dust-containing gas, when the dust-containing gas enters the bag type dust collector, the dust with large particles and large specific gravity is settled down due to the action of gravity and falls into an ash bucket, and when the gas containing fine dust passes through a filter material, the dust is blocked, so that the gas is purified; the gas purification mode of the low-pressure pulse bag type dust collector is an external filtration type, dust-containing gas enters each unit filtration chamber through a flow guide pipe, enough and reasonable airflow is distributed in a proper flow guide and natural flow direction at the bottom of a filter bag in the design from the upper opening of an air inlet, so that the air distribution in the whole filtration chamber is uniform, particle dust in the dust-containing gas directly falls into a dust hopper after natural sedimentation separation, other dust enters a middle box body filtration area along with the airflow under the guide of a flow guide system and is adsorbed on the outer surface of the filter bag, and the filtered clean gas is discharged through the filter bag through an upper box body and an exhaust pipe.
When the existing pulse bag type dust collector is used, dust-containing gas is firstly introduced into the dust collector, and due to the fact that the temperature of the dust-containing gas is high, a cloth bag in the dust collector can be damaged when the dust-containing gas enters the dust collector, and the dust-containing gas can contain toxic gas, and the dust-containing gas is discharged into air after dust collection is finished, so that the air environment can be polluted; therefore, a tail gas treatment method based on gravity and pulse bag type dust removal is provided.
Disclosure of Invention
The invention aims to provide a tail gas treatment method based on gravity and pulse bag type dust removal, so as to solve the problems in the background.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a tail gas treatment method based on gravity and pulse bag type dust removal, which comprises the following steps:
the method comprises the following steps: arranging a gas cooler, wherein the medium for cooling the high-temperature flue gas adopts air or water with low temperature;
step two: atomizing the tail gas after dust removal is finished, and sending the tail gas into a dissolving tank for dust removal treatment to form tail gas with lower dust content;
step three: heating the tail gas in the step two for 10 minutes to 500 ℃ to form high-temperature tail gas; introducing the high-temperature tail gas into ammonia water by using an air pump and a pipeline to fully contact the ammonia water to generate ammonium sulfite;
step four: feeding the tail gas treated in the third step into a boiler furnace, fully mixing the tail gas with desulfurizer limestone powder, and reacting to generate calcium sulfate;
step five: introducing the tail gas in the step four into water by using an air pump and a pipeline to be fully contacted with the water, and filtering the generated calcium sulfate to form a liquid-phase product;
step six: gasifying the tail gas in the step five, mixing the tail gas with preheated reducing gas in a reactor, and carrying out oxidation-reduction reaction to generate reduced tail gas;
step seven: conveying the tail gas reduced in the step six into an ammonia purification tower to be absorbed by desalted water;
step eight: and feeding the tail gas in the step seven into a boiler for low-oxygen combustion.
Preferably, a dust inlet pipeline of the pulse bag type dust collector adopts an S-shaped structure; the pipeline that the high temperature dust passes through is lengthened, and the pipeline adopts the metal material, and the interval utilizes the S type extension, utilizes air convection and natural heat dissipation to make the high temperature dust cool off.
Preferably, the reaction temperature in the seventh step is 500-700 ℃.
Preferably, the oxygen content in step eight is 5%.
Preferably, the reducing gas in the sixth step is one or a mixture of hydrogen and carbon monoxide.
Preferably, the cooling mode in the first step adopts an induced draft direct cooling mode, and air at normal temperature is directly mixed into the high smoke flue gas.
The invention has the following beneficial effects:
1. the method fully treats nitrogen oxide and sulfide in the tail gas, uses the ammonia water as circulating liquid, and performs multiple mixing reactions with the tail gas, so that the sulfide content in the tail gas is greatly reduced, uses the desulfurizer to realize high desulfurization efficiency, reasonably utilizes the intermediate limestone powder generated in chemical reactions, realizes recycling and harmlessness of the circulating environment, reduces the nitrogen oxide in the tail gas into nitrogen after oxidation-reduction reactions, and improves the resource utilization rate by absorbing the nitrogen in a nitrogen purification tower.
2. The dust inlet pipeline of the pulse bag type dust collector adopts an S-shaped structure; the pipeline that the high temperature dust passed through is lengthened, and the pipeline adopts the metal material, and the interval utilizes the S type extension, utilizes natural air convection and natural heat dissipation to make the high temperature dust cool off to this sack that can avoid in the dust remover receives the influence of high temperature, can play the effect of protection dust remover with this.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart of a gravity and pulse bag house dust removal based tail gas treatment process of the present invention;
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Please refer to fig. 1: the invention relates to a tail gas treatment method based on gravity and pulse bag type dust removal, which comprises the following steps:
the method comprises the following steps: arranging a gas cooler, wherein the medium for cooling the high-temperature flue gas adopts air or water with low temperature;
step two: atomizing the tail gas after dust removal is finished, and sending the tail gas into a dissolving tank for dust removal treatment to form tail gas with lower dust content;
step three: heating the tail gas in the step two for 10 minutes to 500 ℃ to form high-temperature tail gas; introducing the high-temperature tail gas into ammonia water by using an air pump and a pipeline to fully contact the ammonia water to generate ammonium sulfite;
step four: feeding the tail gas treated in the third step into a boiler furnace, fully mixing the tail gas with desulfurizer limestone powder, and reacting to generate calcium sulfate;
step five: introducing the tail gas in the step four into water by using an air pump and a pipeline to be fully contacted with the water, and filtering the generated calcium sulfate to form a liquid-phase product;
step six: gasifying the tail gas in the step five, mixing the tail gas with preheated reducing gas in a reactor, and carrying out oxidation-reduction reaction to generate reduced tail gas;
step seven: conveying the tail gas reduced in the step six into an ammonia purification tower to be absorbed by desalted water;
step eight: and feeding the tail gas in the step seven into a boiler for low-oxygen combustion.
Wherein, the dust inlet pipeline of the pulse bag type dust collector adopts an S-shaped structure; the pipeline that the high temperature dust passes through is lengthened, and the pipeline adopts the metal material, and the interval utilizes the S type extension, utilizes air convection and natural heat dissipation to make the high temperature dust cool off.
Wherein the reaction temperature in the seventh step is 500-700 ℃.
Wherein the oxygen content in step eight is 5%.
And in the sixth step, the reducing gas is one or a mixture of hydrogen and carbon monoxide.
Wherein the cooling mode in the step one adopts an induced draft direct cooling mode, and air at normal temperature is directly mixed into the high smoke flue gas.
In the invention, tail gas is atomized and sent into a dissolving tank for dedusting treatment to form low-dust tail gas; heating the low-dust tail gas to form high-temperature tail gas, fully contacting the high-temperature tail gas with ammonia water through a fan to generate ammonium sulfite, pressurizing circulating liquid ammonia water through a pump, atomizing, and mixing and reacting with the tail gas again until the content of sulfide in the tail gas reaches the environmental standard; then the tail gas is sent into a boiler furnace to be fully mixed with desulfurizer limestone powder and then reacts to generate calcium sulfate; the tail gas is fully contacted with water, and the generated calcium sulfate is filtered to form a liquid-phase product; gasifying the tail gas, mixing the gasified tail gas with the preheated mixed gas of hydrogen and carbon monoxide in a reactor to perform oxidation-reduction reaction to generate nitrogen; sending the reduced tail gas into an ammonia purification tower to be absorbed by desalted water; and finally, the tail gas is sent into a boiler for low-oxygen combustion, the tail gas after the mixed tail gas is combusted meets the relevant national environmental protection standard, and is directly discharged into the atmosphere without polluting the environment.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (6)
1. A tail gas treatment method based on gravity and pulse bag type dust removal is characterized in that: the method comprises the following steps:
the method comprises the following steps: arranging a gas cooler, wherein the medium for cooling the high-temperature flue gas adopts air or water with low temperature;
step two: atomizing the tail gas after dust removal is finished, and sending the tail gas into a dissolving tank for dust removal treatment to form tail gas with lower dust content;
step three: heating the tail gas in the step two for 10 minutes to 500 ℃ to form high-temperature tail gas; introducing the high-temperature tail gas into ammonia water by using an air pump and a pipeline to fully contact the ammonia water to generate ammonium sulfite;
step four: feeding the tail gas treated in the third step into a boiler furnace, fully mixing the tail gas with desulfurizer limestone powder, and reacting to generate calcium sulfate;
step five: introducing the tail gas in the step four into water by using an air pump and a pipeline to be fully contacted with the water, and filtering the generated calcium sulfate to form a liquid-phase product;
step six: gasifying the tail gas in the step five, mixing the tail gas with preheated reducing gas in a reactor, and carrying out oxidation-reduction reaction to generate reduced tail gas;
step seven: conveying the tail gas reduced in the step six into an ammonia purification tower to be absorbed by desalted water;
step eight: and feeding the tail gas in the step seven into a boiler for low-oxygen combustion.
2. The tail gas treatment method based on gravity and pulse bag type dust removal as claimed in claim 1, wherein a dust inlet pipeline of the pulse bag type dust remover adopts an S-shaped structure; the pipeline that the high temperature dust passes through is lengthened, and the pipeline adopts the metal material, and the interval utilizes the S type extension, utilizes air convection and natural heat dissipation to make the high temperature dust cool off.
3. The tail gas treatment method based on gravity and pulse bag-type dust removal as claimed in claim 1, wherein the reaction temperature in the seventh step is 500-700 ℃.
4. The tail gas treatment method based on gravity and pulse bag house dust removal according to claim 1, wherein the oxygen content in the eighth step is 5%.
5. The tail gas treatment method based on gravity and pulse bag house dust removal according to claim 1, wherein the reducing gas in the sixth step is one or a mixture of hydrogen and carbon monoxide.
6. The tail gas treatment method based on gravity and pulse bag-type dust removal as claimed in claim 1, wherein the cooling manner in the first step is an induced draft direct cooling manner, and normal temperature air is directly mixed into the high smoke flue gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111236417.4A CN113842767A (en) | 2021-10-23 | 2021-10-23 | Tail gas treatment method based on gravity and pulse bag type dust removal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111236417.4A CN113842767A (en) | 2021-10-23 | 2021-10-23 | Tail gas treatment method based on gravity and pulse bag type dust removal |
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| CN113842767A true CN113842767A (en) | 2021-12-28 |
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| CN202111236417.4A Pending CN113842767A (en) | 2021-10-23 | 2021-10-23 | Tail gas treatment method based on gravity and pulse bag type dust removal |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230635A (en) * | 2011-05-11 | 2011-11-02 | 北京世能中晶能源科技有限公司 | Treatment system and method of smoke |
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| CN104801169A (en) * | 2015-05-15 | 2015-07-29 | 王英英 | Kiln tail gas treatment method |
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| CN208340881U (en) * | 2018-04-11 | 2019-01-08 | 江苏金维氨生物工程有限公司 | It is a kind of for producing the airflow comminution system of branched-chain amino acid |
| CN109603468A (en) * | 2019-02-15 | 2019-04-12 | 山东首丰环保设备有限公司 | A kind of dust removal integrated method of desulphurization denitration |
| CN112843977A (en) * | 2020-12-28 | 2021-05-28 | 上海域德环保工程有限公司 | Purification process for ultralow emission flue gas generated by hazardous waste incineration |
-
2021
- 2021-10-23 CN CN202111236417.4A patent/CN113842767A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2500082A1 (en) * | 2011-03-15 | 2012-09-19 | Linde Aktiengesellschaft | Method and assembly for de-nitrification of exhaust gas |
| CN102230635A (en) * | 2011-05-11 | 2011-11-02 | 北京世能中晶能源科技有限公司 | Treatment system and method of smoke |
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| CN104801169A (en) * | 2015-05-15 | 2015-07-29 | 王英英 | Kiln tail gas treatment method |
| CN208340881U (en) * | 2018-04-11 | 2019-01-08 | 江苏金维氨生物工程有限公司 | It is a kind of for producing the airflow comminution system of branched-chain amino acid |
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| CN109603468A (en) * | 2019-02-15 | 2019-04-12 | 山东首丰环保设备有限公司 | A kind of dust removal integrated method of desulphurization denitration |
| CN112843977A (en) * | 2020-12-28 | 2021-05-28 | 上海域德环保工程有限公司 | Purification process for ultralow emission flue gas generated by hazardous waste incineration |
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Application publication date: 20211228 |