CN204352760U - Furnace for domestic refuse SCR flue gas denitrification system - Google Patents
Furnace for domestic refuse SCR flue gas denitrification system Download PDFInfo
- Publication number
- CN204352760U CN204352760U CN201420836811.0U CN201420836811U CN204352760U CN 204352760 U CN204352760 U CN 204352760U CN 201420836811 U CN201420836811 U CN 201420836811U CN 204352760 U CN204352760 U CN 204352760U
- Authority
- CN
- China
- Prior art keywords
- ammonia
- flue gas
- scr
- furnace
- grid
- 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
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
- 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
Landscapes
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
Furnace for domestic refuse SCR flue gas denitrification system, relates to field of Environment Protection.Comprise the ammonia storage tank, ammonia-spraying grid and the SCR reactor that connect successively, the port of export of SCR reactor connects chimney by air-introduced machine, ammonia storage tank is also connected with electrical evaporator, by electrical evaporator, the liquefied ammonia of ammonia storage tank is evaporated to ammonia, be provided with air ammonia blender between ammonia storage tank and spray ammonia grid, air ammonia blender is connected with air blower; House refuse kiln gas connects spray ammonia grid by flue gas pipeline, is provided with ammonia flue gas blender between spray ammonia grid and SCR reactor.The utility model effectively can remove the NOx in flue gas of refuse burning, avoids environment, and is convenient to mate with existing steam generator system, and does not produce too much influence to other relevant apparatus.
Description
Technical field
The utility model relates to field of Environment Protection, is specially furnace for domestic refuse SCR flue gas denitrification system.
Background technology
SCR flue gas denitrification system is the system adopting selective catalytic reduction flue gas to be carried out to denitration, SCR gas denitrifying technology refers under catalyst and oxygen existent condition, (be generally in 310-420 DEG C) in the scope of low temperature, reducing agent (generally using ammonia) is selectively to the NOx reduction in flue gas, and generation N2 and water reduce the technology of NOx emission.
The dust contained flue gas concentration of existing furnace for domestic refuse is too high, makes catalyst be in severe working environment, the catalyst poisoning in device of easily inducing reaction and abrasion,
Existing SCR flue gas denitrification system will ensure that SCR reactor inlet cigarette temperature is between 310-420 DEG C, thus ensures that catalyst runs at a suitable temperature, obtains higher denitration efficiency.But can not reach above-mentioned optimum temperature under many circumstances, catalyst cannot complete the catalytic reduction to denitrating flue gas reaction.
Utility model content
The purpose of this utility model is to provide one way of life refuse furnace SCR flue gas denitrification system, can complete at low ambient temperatures and carry out denitration process to house refuse kiln gas, decrease energy resource consumption, reduce cost.
The technical scheme realizing above-mentioned purpose is: furnace for domestic refuse SCR flue gas denitrification system, it is characterized in that: comprise the ammonia storage tank, ammonia-spraying grid and the SCR reactor that connect successively, the port of export of SCR reactor connects chimney by air-introduced machine, ammonia storage tank is also connected with electrical evaporator, by electrical evaporator, the liquefied ammonia of ammonia storage tank is evaporated to ammonia, be provided with air ammonia blender between ammonia storage tank and spray ammonia grid, air ammonia blender is connected with air blower; House refuse kiln gas connects spray ammonia grid by flue gas pipeline, is provided with ammonia flue gas blender between spray ammonia grid and SCR reactor.
Described flue gas pipeline is connected with sack cleaner, by sack cleaner, pre-dedusting is carried out to ash-laden gas, avoid that dust contained flue gas is too high to be polluted catalyst.
Between deduster and spray ammonia grid and the port of export of SCR reactor be separately installed with flue gas inspection device, the content of the components such as the NOx before process can being detected and after process in flue gas.
SCR reactor comprise superposed enter flue unit and be positioned at the catalytic reaction unit of bottom, enter flue unit and comprise the gas skirt, guiding device and the equal wind fairing that set gradually from top to bottom, catalytic reaction unit comprises catalyst layer and is positioned at the mechanical vibrator soot blower above catalyst layer, flue gas enters gas skirt, and under the effect of guiding device, enter equal wind fairing, flue gas after equal wind rectification enters catalyst again, carries out denitration reaction.The dust stratification of SCR inside reactor, can be removed by mechanical vibrator soot blower.
Bypass line is connected with between the entrance point of SCR reactor and the port of export; bypass line is provided with control valve; the effect of bypass line is that (when incinerator start and shutdown and when seasonality uses) connects control valve when incinerator load reduces, and prevents low temperature from causing catalyst poisoning and catalyst contamination.The utility model catalyst layer adopts low temperature catalyst, and comprise carrier mass and active material, carrier mass is TiO2, and active material is the metal oxides such as Mn, Fe.Reaction temperature is about 150 ° time, and NOx clearance can reach more than 80%, keeps away the K in first flying dust, the pollution or poisoning that the trace element such as Na, Ca, As cuts catalysis, and the catalysqt deactivation that alleviation S02 causes and catalyst life reduce.Traditional SCR catalyst reaction temperature is at 300-400 °.Therefore enter in SCR reactor at flue gas, thus greatly reduce therefore before flue gas enters SCR reactor, without the need to flue gas, thus greatly reduce the consumption of the energy, reduce costs.
The utility model effectively can remove the NOx in flue gas of refuse burning, avoids environment, and is convenient to mate with existing steam generator system, and does not produce too much influence to other relevant apparatus.
Accompanying drawing explanation
Fig. 1 is fundamental diagram of the present utility model.
Detailed description of the invention
As shown in Figure 1, the utility model comprises the ammonia storage tank 1, ammonia-spraying grid 2 and the SCR reactor 3 that connect successively, the port of export of SCR reactor 3 connects chimney 5 by air-introduced machine 4, ammonia storage tank 1 is also connected with electrical evaporator 6, by electrical evaporator 6, the liquefied ammonia of ammonia storage tank 1 is evaporated to ammonia, be provided with air ammonia blender 7 between ammonia storage tank 1 and spray ammonia grid 2, air ammonia blender 7 is connected with air blower 8; House refuse kiln gas connects spray ammonia grid 2 by flue gas pipeline 9, is provided with ammonia flue gas blender 10 between spray ammonia grid 2 and SCR reactor 3.
Flue gas pipeline 9 is connected with sack cleaner 11, carries out pre-dedusting by sack cleaner 11 pairs of ash-laden gas.
Between sack cleaner 11 and spray ammonia grid 2 and the port of export of SCR reactor 3 be separately installed with flue gas inspection device 12.
Be connected with bypass line 13 between the entrance point of SCR reactor 3 and the port of export, bypass line 13 be provided with control valve 14.
SCR reactor 3 comprise superposed enter flue unit 15 and be positioned at the catalytic reaction unit 16 of bottom, enter flue unit 15 and comprise the gas skirt 17, guiding device 18 and the equal wind fairing 19 that set gradually from top to bottom, the mechanical vibrator soot blower 21 that catalytic reaction unit 16 comprises low-temperature catalyzed oxidant layer 20 and is positioned at above catalyst layer 20.
Claims (6)
1. furnace for domestic refuse SCR flue gas denitrification system, it is characterized in that: comprise the ammonia storage tank, ammonia-spraying grid and the SCR reactor that connect successively, the port of export of SCR reactor connects chimney by air-introduced machine, ammonia storage tank is also connected with electrical evaporator, by electrical evaporator, the liquefied ammonia of ammonia storage tank is evaporated to ammonia, be provided with air ammonia blender between ammonia storage tank and spray ammonia grid, air ammonia blender is connected with air blower; House refuse kiln gas connects spray ammonia grid by flue gas pipeline, is provided with ammonia flue gas blender between spray ammonia grid and SCR reactor.
2. furnace for domestic refuse SCR flue gas denitrification system according to claim 1, is characterized in that: described flue gas pipeline is connected with deduster, carries out pre-dedusting by deduster to ash-laden gas.
3. furnace for domestic refuse SCR flue gas denitrification system according to claim 2, is characterized in that: described deduster is sack cleaner.
4. furnace for domestic refuse SCR flue gas denitrification system according to claim 2, is characterized in that: between deduster and spray ammonia grid and the port of export of SCR reactor be separately installed with flue gas inspection device.
5. furnace for domestic refuse SCR flue gas denitrification system according to claim 1, it is characterized in that: SCR reactor comprise superposed enter flue unit and be positioned at the catalytic reaction unit of bottom, enter flue unit and comprise the gas skirt, guiding device and the equal wind fairing that set gradually from top to bottom, catalytic reaction unit comprises low-temperature catalyzed oxidant layer and is positioned at the mechanical vibrator soot blower above catalyst layer.
6. furnace for domestic refuse SCR flue gas denitrification system according to claim 1, is characterized in that: be connected with bypass line between the entrance point of SCR reactor and the port of export, bypass line is provided with control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420836811.0U CN204352760U (en) | 2014-12-26 | 2014-12-26 | Furnace for domestic refuse SCR flue gas denitrification system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420836811.0U CN204352760U (en) | 2014-12-26 | 2014-12-26 | Furnace for domestic refuse SCR flue gas denitrification system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204352760U true CN204352760U (en) | 2015-05-27 |
Family
ID=53254258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420836811.0U Active CN204352760U (en) | 2014-12-26 | 2014-12-26 | Furnace for domestic refuse SCR flue gas denitrification system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204352760U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104492259A (en) * | 2014-12-26 | 2015-04-08 | 南通天蓝环保能源成套设备有限公司 | SCR flue gas denitrification system for household garbage furnace |
| CN105944567A (en) * | 2016-06-24 | 2016-09-21 | 青岛双瑞海洋环境工程股份有限公司 | Ship exhaust gas denitration system |
-
2014
- 2014-12-26 CN CN201420836811.0U patent/CN204352760U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104492259A (en) * | 2014-12-26 | 2015-04-08 | 南通天蓝环保能源成套设备有限公司 | SCR flue gas denitrification system for household garbage furnace |
| CN105944567A (en) * | 2016-06-24 | 2016-09-21 | 青岛双瑞海洋环境工程股份有限公司 | Ship exhaust gas denitration system |
| CN105944567B (en) * | 2016-06-24 | 2018-08-21 | 青岛双瑞海洋环境工程股份有限公司 | Marine exhaust denitrating system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9857125B2 (en) | Denitration and waste heat recovery integrated furnace | |
| WO2017059820A1 (en) | Reduction and oxidation combined denitration system and denitration method therefor | |
| CN104190253A (en) | Coke oven flue gas SCR denitration system | |
| CN204073849U (en) | Coke oven flue gas SCR denitration system | |
| CN203355611U (en) | Device for removing NOX and dioxins in sintering and pelletizing flue gas through SCR (Selective Catalytic Reduction) | |
| CN102658013A (en) | Low-temperature selective catalytic reduction (SCR) fixed bed flue gas denitrification device and method for coal-fired boiler | |
| CN105056758A (en) | Method for fluidized catalytic removal of nitrogen oxide, and apparatus thereof | |
| CN102327735A (en) | Hydrogen peroxide-based flue-gas desulfurizing and denitrifying system and method | |
| CN104492259A (en) | SCR flue gas denitrification system for household garbage furnace | |
| CN103706239A (en) | Low temperature rotary electric station flue gas denitrification system based on absorption technology | |
| CN203090757U (en) | Desulfurization and denitrification system for boiler smoke | |
| CN204352760U (en) | Furnace for domestic refuse SCR flue gas denitrification system | |
| CN205073858U (en) | DeNOx systems is united with oxidation to reduction | |
| CN202590630U (en) | Coal-fired boiler low-temperature selective catalytic reduction (SCR) fixed bed smoke denitration device | |
| CN105327619A (en) | Low-temperature SCR reactor, smoke low-temperature denitration system, smoke treatment system and smoke treatment method | |
| CN205007830U (en) | Denitration dust pelletizing system of industrial stoves flue gas | |
| CN204522707U (en) | Electron beam flue gas processing device | |
| CN204275782U (en) | NOx and mercury combined removal device based on combination of SNCR-SCR | |
| CN103727803B (en) | A kind of equipment for denitrifying flue gas | |
| CN102698600A (en) | System for intelligently controlling flue gas denitrification of cement plant based on selective catalytic reduction (SCR) method | |
| CN102671517A (en) | Device for performing urea pyrolysis by utilizing smoke thermal enthalpy | |
| CN202237743U (en) | System for simultaneously desulfurizing and denitrifying flue gas based on hydrogen peroxide functions | |
| CN202057204U (en) | Waste gas desulfuration and dust control device of carbon calcining furnace | |
| CN205586833U (en) | Urea method SCR flue gas denitration system of thermal power factory combustor | |
| CN207680349U (en) | A kind of combined desulfurization and denitration mercury removal device using pre-oxidation process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |