CN211886220U - Dust ultralow emission system for cement kiln - Google Patents
Dust ultralow emission system for cement kiln Download PDFInfo
- Publication number
- CN211886220U CN211886220U CN202020389891.5U CN202020389891U CN211886220U CN 211886220 U CN211886220 U CN 211886220U CN 202020389891 U CN202020389891 U CN 202020389891U CN 211886220 U CN211886220 U CN 211886220U
- Authority
- CN
- China
- Prior art keywords
- cyclone
- dust
- cement kiln
- flue gas
- ultra
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000000428 dust Substances 0.000 title claims abstract description 45
- 239000004568 cement Substances 0.000 title claims abstract description 32
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000003546 flue gas Substances 0.000 claims abstract description 20
- 230000003647 oxidation Effects 0.000 claims abstract description 10
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 239000007789 gas Substances 0.000 claims abstract description 5
- 239000002994 raw material Substances 0.000 claims description 13
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 6
- 229910021529 ammonia Inorganic materials 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 abstract description 21
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 abstract description 12
- 239000000779 smoke Substances 0.000 abstract description 6
- 239000013618 particulate matter Substances 0.000 abstract description 2
- 239000002918 waste heat Substances 0.000 description 5
- 239000003344 environmental pollutant Substances 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229910052815 sulfur oxide Inorganic materials 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Images
Classifications
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model discloses an ultralow discharge system of dust for cement kiln, including the cement kiln production line, the cement kiln production line includes the combustor, the dore furnace, five-stage cyclone, exhaust-heat boiler, draught fan and raw hopper, wherein the exit linkage of dore furnace has five-stage cyclone, five-stage cyclone is connected with exhaust-heat boiler, exhaust-heat boiler is connected with the draught fan, the draught fan is connected with raw hopper, wherein the feed inlet of raw hopper is connected with raw feed title, the gas outlet that raw was fought is connected with the flue gas cooler, the exit linkage of flue gas cooler has the dust remover, the exit linkage of dust remover has oxidation denitration reactor. The utility model discloses can effectively deviate from dust, nitrogen oxide and sulfur dioxide in the flue gas, make it realize that the smoke and dust discharges particulate matter content and is less than 10mg/Nm, nitrogen oxide content is less than 50mg/Nm and the ultralow emission requirement that sulfur dioxide content is less than 30mg/Nm thin year, safety ring protects more.
Description
Technical Field
The utility model relates to an exhaust emission technical field especially relates to an ultralow discharge system of dust for cement kiln.
Background
Along with the rapid development of economy in China, the emission of smoke pollutants of a novel dry-method cement kiln is becoming stricter day by day, and the treatment of the smoke pollutants of the novel dry-method cement kiln also enters an ultra-low emission era after the ultra-low emission modification of the atmospheric pollutants of a coal-fired power plant. The traditional kiln tail flue gas purification technology cannot meet the requirement of ultralow emission at all, and the content of particulate matters, nitrogen oxides and sulfur dioxide emitted by smoke dust cannot reach the emission standard.
To this end, we propose an ultra low emission dust system for cement kilns.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problems in the background art and providing an ultra-low dust discharge system for a cement kiln.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a dust minimum discharge system for cement kiln, including the cement kiln production line, the cement kiln production line includes combustor, dore furnace, five-stage cyclone, exhaust-heat boiler, draught fan and raw hopper, wherein the exit linkage of dore furnace has five-stage cyclone, five-stage cyclone includes cyclone C1, cyclone C2, cyclone C3, cyclone C4 and cyclone C5, five-stage cyclone is connected with exhaust-heat boiler, exhaust-heat boiler is connected with the draught fan, the draught fan is connected with raw hopper, wherein the feed inlet of raw hopper is connected with raw material feed balance, the gas outlet of raw hopper is connected with flue gas cooler, flue gas cooler's exit linkage has the dust remover, the exit linkage of dust remover has oxidation denitration reactor, oxidation denitration reactor's exit linkage has the humidification tower, and an outlet of the humidifying tower is connected with a discharge chimney.
In the dust ultra-low emission system for the cement kiln, the cone part of the cyclone C5 is provided with an ammonia spraying opening.
In the above-described ultra-low dust discharge system for a cement kiln, the blanking pipes of the cyclone C2 and the cyclone C3 are longer than those of the cyclone C1, the cyclone C4 and the cyclone C5.
In the ultra-low dust discharge system for the cement kiln, the induced draft fan is a high-temperature fan.
In the ultra-low dust discharge system for the cement kiln, the dust collector adopts a bag type dust collector.
In the ultra-low dust discharge system for the cement kiln, an atomizer is arranged inside the humidifying tower.
The utility model has the advantages that: dust, nitrogen oxide and sulfur dioxide in the flue gas can effectively deviate from through setting up gas cooler, dust remover, oxidation denitration reactor and humidifying tower, make it realize that smoke and dust discharges particulate matter content and is less than 10mg/Nm year, nitrogen oxide content is less than 50mg/Nm year and sulfur dioxide content is less than the ultralow emission requirement of 30mg/Nm year, safer environmental protection.
Drawings
FIG. 1 is a schematic connection diagram of an ultra-low dust emission system for a cement kiln according to the present invention.
In the figure: the system comprises a combustor 1, a decomposing furnace 2, a five-stage cyclone separator 3, a waste heat boiler 4, a draught fan 5, a raw material hopper 6, a raw material feeding scale 7, a flue gas cooler 8, a dust remover 9, an oxidation and denitration reactor 10, a humidifying tower 11 and an exhaust chimney 12.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Referring to fig. 1, the dust ultra-low emission system for the cement kiln comprises a cement kiln production line, wherein the cement kiln production line comprises a combustor 1, a decomposing furnace 2, a five-stage cyclone separator 3, a waste heat boiler 4, an induced draft fan 5 and a raw material hopper 6, an outlet of the decomposing furnace 2 is connected with the five-stage cyclone separator 3, the five-stage cyclone separator 3 comprises a cyclone separator C1, a cyclone separator C2, a cyclone separator C3, a cyclone separator C4 and a cyclone separator C5, the five-stage cyclone separator 3 is connected with the waste heat boiler 4, the waste heat boiler 4 is connected with the induced draft fan 5, and the induced draft fan 5 is connected with the raw material hopper 6; wherein the feed inlet of raw hopper 6 is connected with raw material feed balance 7, the gas outlet of raw hopper 6 is connected with flue gas cooler 8, the exit linkage of flue gas cooler 8 has dust remover 9, the exit linkage of dust remover 9 has oxidation denitration reactor 10, the exit linkage of oxidation denitration reactor 10 has humidifying tower 11, the exit linkage of humidifying tower 11 has emission chimney 12.
The fuel is burnt at high temperature in the combustor 1 and the decomposing furnace 2, the generated flue gas contains main atmospheric pollutants such as dust, NOx, SOx and the like, the flue gas flows through the combustor 1, the decomposing furnace 2, the five-stage cyclone separator 3 and the waste heat boiler 4 from bottom to top, the flue gas is discharged through the induced draft fan 5, and part of hot flue gas enters the raw material hopper 6 to preheat raw materials; the flue gas is discharged from a discharge chimney 12 after being treated by a flue gas cooler 8, a dust remover 9, an oxidation denitration reactor 10 and a humidifying tower 11;
the cone of the cyclone C5 has an ammonia spraying opening, so that the usage amount of ammonia water can be effectively reduced, the denitration effect can be greatly improved, and the effect of reducing the emission of nitrogen oxides can be achieved under the condition that the usage amount of ammonia water is slightly reduced; the blanking pipes of the cyclone separator C2 and the cyclone separator C3 are longer than those of the cyclone separator C1, the cyclone separator C4 and the cyclone separator C5, so that the aim of prolonging the retention time of materials in a cyclone cylinder can be fulfilled, the decomposition efficiency is effectively improved, and the generation of nitrogen oxides is reduced; the draught fan 5 adopts a high-temperature fan, air for the system is stabilized, and the problems that the impeller of the existing fan is greatly abraded and the air quantity of the system is unstable are solved; the dust collector 9 adopts a bag type dust collector, so that the effect of absorbing smoke dust particles is better; an atomizer is arranged in the humidifying tower 11, so that the flue gas is atomized and cooled, effective desulfurization can be realized, and the content of sulfur dioxide in the flue gas is reduced; it is worth explaining that the belt conveying on the cement kiln production line adopts gallery type full sealing, all the material sheds are fully sealed, and a spray type dust suppression facility is configured to seal a cement loading channel, so that the dust pollution is reduced.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. A dust minimum discharge system for cement kiln, including cement kiln production line, its characterized in that, cement kiln production line includes combustor (1), dore furnace (2), five-stage cyclone (3), exhaust-heat boiler (4), draught fan (5) and raw material fill (6), wherein the exit linkage of dore furnace (2) has five-stage cyclone (3), five-stage cyclone (3) include cyclone C1, cyclone C2, cyclone C3, cyclone C4 and cyclone C5, five-stage cyclone (3) are connected with exhaust-heat boiler (4), exhaust-heat boiler (4) are connected with draught fan (5), draught fan (5) are connected with raw material fill (6), wherein the feed inlet of raw material fill (6) is connected with raw material feed scale (7), the gas outlet of raw material fill (6) is connected with flue gas cooler (8), the outlet of the flue gas cooler (8) is connected with a dust remover (9), the outlet of the dust remover (9) is connected with an oxidation denitration reactor (10), the outlet of the oxidation denitration reactor (10) is connected with a humidifying tower (11), and the outlet of the humidifying tower (11) is connected with a discharge chimney (12).
2. The ultra-low dust emission system for cement kilns as claimed in claim 1, wherein the cyclone cone of the cyclone separator C5 is provided with an ammonia injection port.
3. The ultra-low dust emission system for cement kilns of claim 1, wherein the blanking pipes of cyclone C2 and cyclone C3 are longer than cyclone C1, cyclone C4 and cyclone C5.
4. The ultra-low dust emission system for cement kilns according to claim 1, characterized in that the induced draft fan (5) is a high temperature fan.
5. Ultra-low dust emission system for cement kilns according to claim 1, characterized in that said dust collector (9) is a bag collector.
6. The ultra-low dust emission system for cement kilns according to claim 1, characterized in that an atomizer is provided inside the humidifying tower (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020389891.5U CN211886220U (en) | 2020-03-25 | 2020-03-25 | Dust ultralow emission system for cement kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020389891.5U CN211886220U (en) | 2020-03-25 | 2020-03-25 | Dust ultralow emission system for cement kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211886220U true CN211886220U (en) | 2020-11-10 |
Family
ID=73269482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020389891.5U Active CN211886220U (en) | 2020-03-25 | 2020-03-25 | Dust ultralow emission system for cement kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211886220U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112619403A (en) * | 2020-12-01 | 2021-04-09 | 贵州省鑫瀚蓝环保科技有限公司 | Cement kiln semi-dry desulfurization system design |
-
2020
- 2020-03-25 CN CN202020389891.5U patent/CN211886220U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112619403A (en) * | 2020-12-01 | 2021-04-09 | 贵州省鑫瀚蓝环保科技有限公司 | Cement kiln semi-dry desulfurization system design |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202478804U (en) | Sintering machine flue gas desulphurization denitration device | |
| CN105444582A (en) | Cement kiln tail flue gas treatment device and technological method characterized by combination of bypass air release and staged combustion | |
| CN202884903U (en) | Biomass circulating fluidized bed combustion equipment with low nitrogen oxide emission | |
| CN103525502A (en) | Coal-fired power plant boiler biomass reburning denitration agent and preparation method thereof | |
| CN110075680A (en) | The desulphurization denitration dedusting minimum discharge technique and system of low-sulfur raw material production cement | |
| CN102966945A (en) | Method for reducing nitrogen oxide discharge of biomass circulating fluid bed boiler | |
| CN208260535U (en) | A kind of desulphurization denitration dust removal integrated plant suitable for biomass boiler | |
| CN209490672U (en) | A kind of flue gas system for the ultra-clean processing of cement kiln tail gas | |
| CN101559318A (en) | Thermal carbon composite denitration method for coal-fired boiler | |
| CN109797006A (en) | A kind of super fine biological matter of flue gas drying powder feeding and coal-fired coupled electricity-generation system and method | |
| CN205425856U (en) | Cement kiln bypass joint fractional combustion kiln tail smoke treatment device that leaks informaton | |
| CN211886220U (en) | Dust ultralow emission system for cement kiln | |
| CN107551778A (en) | A kind of denitrating flue gas desulfurization dust-removing technique method | |
| CN205133418U (en) | Catalysis of cement kiln steam and coal powder gasification system | |
| CN110052155A (en) | A kind of Hg, SO3The system with low-low temperature ESP of cooperation-removal | |
| CN109321258A (en) | A kind of dry coke quenching prestores a section circulating flue gas desulfurization dedusting and purifying device | |
| CN113587083A (en) | Grate furnace primary air distribution adjusting device and adjusting method | |
| CN209652250U (en) | A kind of super fine biological matter of flue gas drying powder feeding and coal-fired coupled electricity-generation system | |
| CN111085092A (en) | Desulfurization and dust removal device and desulfurization and dust removal method for gas boiler | |
| CN103175408A (en) | Industrial furnace comprehensive energy saving and emission reduction integrated system | |
| CN110887037A (en) | Low-nitrogen combustion device for enhancing pulverized coal gasification | |
| CN109404950A (en) | A kind of boiler flue gas treatment system of high efficiency, low cost | |
| CN109442391A (en) | It is a kind of to be simple and efficient low-nitrogen discharged grate firing boiler | |
| CN205860063U (en) | Smoke eliminator and be provided with the chain-grate boiler of this device | |
| CN213348376U (en) | High-efficient SNCR deNOx systems of biomass boiler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Ultra low dust emission system for cement kilns Effective date of registration: 20230713 Granted publication date: 20201110 Pledgee: Xiaoxian finance Company limited by guarantee Pledgor: Tianrui group Xiaoxian Cement Co.,Ltd. Registration number: Y2023980048367 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |