CN210069852U - Thermal decomposition grate furnace system - Google Patents
Thermal decomposition grate furnace system Download PDFInfo
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- CN210069852U CN210069852U CN201920753502.XU CN201920753502U CN210069852U CN 210069852 U CN210069852 U CN 210069852U CN 201920753502 U CN201920753502 U CN 201920753502U CN 210069852 U CN210069852 U CN 210069852U
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- pyrolysis furnace
- flue gas
- air
- quenching tower
- grate
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Abstract
The utility model discloses a thermal decomposition grate system, which comprises a pyrolysis furnace, a grate and a grate, wherein the pyrolysis furnace is used for pyrolyzing garbage to form ash and smoke; the high-temperature dust remover is connected with the gas outlet of the pyrolysis furnace, and the output end of the high-temperature dust remover is connected with a denitration device; the waste heat boiler is connected with the output end of the denitration device; the air preheater is connected with the output end of the waste heat boiler, an air pipeline is arranged in the air preheater and is communicated with an air distribution pipe of the pyrolysis furnace, and a draught fan is arranged on a connecting pipeline of the air preheater and the air distribution pipe and is used for preheating air in the air pipeline through flue gas heat exchange; the quenching tower is connected with the output end of the air preheater, the quenching tower is also connected with an alkali liquor conveying device, two fluid nozzles are arranged on the quenching tower, and the flue gas and the alkali liquor are mixed at the two fluid nozzles and sprayed into the quenching tower for flue gas desulfurization and quenching; and the bag-type dust collector is connected with the output end of the quenching tower, is used for filtering particle dust in the flue gas and is connected with a chimney for exhausting.
Description
Technical Field
The utility model relates to a waste incineration device technical field especially relates to a thermal decomposition grate furnace system.
Background
With the continuous development of economy and the acceleration of urbanization, both domestic garbage and industrial production garbage are multiplied. At present, the mode of garbage disposal is mainly incineration, the volume of general garbage can be reduced by 80 percent through combustion, the volume of the garbage is greatly reduced, the heat generated by combustion can be utilized for power generation and heat supply, the purpose of energy recovery is achieved, and the ash and slag after incineration can be used for making bricks. However, the waste is complex in composition, and various combustibles therein have different densities, shapes, chemical properties, ignition and combustion characteristics, so that they exhibit different combustion speeds and burn-out times in the incinerator, and thus it is difficult to control the combustion process and to ensure sufficient combustion. The conventional waste incineration system is not long in service life, insufficient in waste combustion and black smoke, wastes energy and pollutes the atmosphere, and needs to be optimized urgently.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a split type thermal decomposition grate furnace system, improve the rubbish burning insufficient, discharge the serious problem of environmental pollution.
In order to achieve the purpose, the utility model adopts the following technical proposal:
a pyrolytic grate system, comprising:
the pyrolysis furnace is used for decomposing the garbage at high temperature to form ash and smoke;
the high-temperature dust remover is connected with the gas outlet of the pyrolysis furnace and used for filtering the generated flue gas, and the output end of the high-temperature dust remover is connected with a denitration device;
the waste heat boiler is connected with the output end of the denitration device and used for cooling the flue gas;
the air preheater is connected with the output end of the waste heat boiler, an air pipeline is arranged in the air preheater and is communicated with an air distribution pipe of the pyrolysis furnace, and a draught fan is arranged on a connecting pipeline of the air preheater and the air distribution pipe and is used for preheating air in the air pipeline through flue gas heat exchange;
the quenching tower is connected with the output end of the air preheater, the quenching tower is also connected with an alkali liquor conveying device, two fluid nozzles are arranged on the quenching tower, and the flue gas and the alkali liquor are mixed at the two fluid nozzles and sprayed into the quenching tower for flue gas desulfurization and quenching;
and the bag-type dust collector is connected with the output end of the quenching tower, is used for filtering particle dust in the flue gas and is connected with a chimney for exhausting.
Wherein the alkali liquor is NaOH solution, the working temperature of the quenching tower is 200-400 ℃, and the liquid sprayed into the quenching tower is evaporated within 2-3 s. Avoiding water drops from hanging on the wall.
The working temperature of the pyrolysis furnace is 850 ℃, the working temperature of the high-temperature dust remover is 800-850 ℃, the working temperature of the waste heat boiler is 500-800 ℃, the working temperature of the air preheater is 400-500 ℃, and the working temperature of the bag-type dust remover is 160-200 ℃.
Wherein, the alkali liquor conveying device comprises a solution mixing box and a power pump, and the concentration and the flow of the alkali liquor are adjustable. Thereby controlling the reaction temperature and time.
Wherein, the feed inlet department of pyrolysis oven is provided with the hopper, puts in the rubbish storage storehouse to the hopper through the driving grab bucket to send into the pyrolysis oven by feeder.
Wherein, the bottom of the garbage storage bin is connected with a leachate treatment device.
The pyrolysis furnace adopts a sectional type fire grate structure, the bottom of the pyrolysis furnace is connected with a furnace ash treatment device, and the tail end of the fire grate is provided with an ash bucket which is connected with a furnace slag treatment device.
Wherein, the pyrolysis furnace is provided with a second combustion chamber, the bottom of the second combustion chamber is inclined, and an ash outlet of the second combustion chamber is positioned right above the ash hopper.
Wherein the bottoms of the quenching tower and the bag-type dust remover are connected with a fly ash collecting device.
Wherein, the exhaust-heat boiler is connected with a cooling tower.
To sum up, the beneficial effects of the utility model are that, compared with the prior art, pyrolytic grate furnace system fully burns rubbish and effectively collects the slag ashes, and the flue gas that produces progressively purifies and the cooling through steps such as postcombustion, denitration, desulfurization, dust removal, and wherein the energy of flue gas can be recycled through the heat transfer, and burning, drying in the help pyrolysis oven realize energy make full use of, finally guarantee that the flue gas reaches emission standard, realize energy make full use of to and environment-friendly processing rubbish.
Drawings
FIG. 1 is a schematic structural diagram of a thermal decomposition grate system according to an embodiment of the present invention.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
Referring to fig. 1, the present embodiment provides a thermal decomposition grate system, which mainly includes a pyrolysis furnace 1, a high temperature dust collector 2, a waste heat boiler 3, an air preheater 4, a quench tower 5, a bag-type dust collector 6, and a chimney 7, wherein a hopper 8 is disposed at a feed inlet of the pyrolysis furnace 1, garbage in a garbage storage bin 10 is put into the hopper 8 through a crane grab 9 and is sent into the pyrolysis furnace 1 through a feed device 11, and the bottom of the garbage storage bin 10 is connected to a leachate treatment device 12.
The pyrolysis furnace 1 is mainly used for pyrolyzing garbage to form ash and smoke, the working temperature is 850 ℃, a sectional type fire grate structure is adopted in the furnace, the bottom of the pyrolysis furnace 1 is connected with a furnace ash treatment device 13, the tail end of the fire grate is provided with an ash bucket 14, the ash bucket 14 is connected with a furnace slag treatment device 15, the garbage is combusted in the process of circulation on the fire grate, the furnace ash generated in the process falls to the bottom of the pyrolysis furnace 1, and the furnace slag moves to the ash bucket 14 along the fire grate to be intensively deslagged. In particular, the pyrolysis furnace 1 is provided with a second combustion chamber 16, the bottom of the second combustion chamber 16 is inclined, and an ash outlet of the second combustion chamber 16 is positioned right above the ash hopper 14. It should be noted that the pyrolysis furnace 1 is provided with an air distribution pipe 17, and hot air is introduced into the air distribution pipe 17 to provide auxiliary air and temperature for combustion, thereby ensuring combustion efficiency.
The high-temperature dust remover 2 is connected with the gas outlet of the pyrolysis furnace 1, and the output end of the high-temperature dust remover 2 is connected with the denitration device 18, or the denitration device 18 is integrated in the high-temperature dust remover 2, namely, the SNCR flue gas denitration system. The high-temperature dust remover 2 is used for preliminarily filtering the generated flue gas, the working temperature is 800-850 ℃, particularly, a high-temperature ceramic dust removal method is adopted, the flue gas is filtered and dedusted through a high-temperature ceramic filtering material, and when the dedusted gas passes through the denitration device 18, a denitration ash removal system can be omitted, the denitration capability is improved, and the denitration effect is improved.
Exhaust-heat boiler 3 is connected with denitrification facility 18's output for the flue gas cooling, and operating temperature is 500 ~ 800 ℃, and exhaust-heat boiler 3 is external to have cooling tower 19, for example the water-cooling mode, cools down the flue gas through the heat transfer with cooling tower 19, and the 19 heat transfer of cooling tower obtains the energy and can be used to other uses certainly, improves energy utilization efficiency.
The air heater 4 is connected with the output of exhaust-heat boiler 3, and operating temperature is 400 ~ 500 ℃, wherein is provided with air conduit 20, and air conduit 20 communicates with the air distribution pipe 17 of pyrolysis oven 1, is provided with the draught fan on the connecting pipeline between them for preheat the air in the air conduit 20 through the flue gas heat transfer, improve combustion efficiency in the pyrolysis oven 1.
Quench tower 5 is connected with air heater 4's output, and operating temperature is 200 ~ 400 ℃, and quench tower 5 is connected with alkali lye conveyor 21, is provided with two fluid shower nozzles on the quench tower 5, and flue gas and alkali lye mix in two fluid shower nozzles department and spout into the inside of quench tower 5 for flue gas desulfurization quenching. Wherein, the alkali liquor can adopt NaOH solution, and the liquid sprayed into the interior of the quench tower 5 is evaporated in 2-3 s, so as to avoid the wall hanging of water drops. The alkali solution feeding device 21 includes a solution mixing tank and a power pump, and the quenching tower 5 is provided with a flow rate controller for adjusting the alkali solution flow rate and concentration of the quenching tower 5 and controlling the reaction temperature and time.
The bag-type dust collector 6 is connected with the output end of the quench tower 5, the working temperature is 160-200 ℃, and the bag-type dust collector is used for filtering particle dust in flue gas and is connected with a chimney 7 for exhausting. In addition, the bottoms of the quenching tower 5 and the bag-type dust collector 6 are connected with a fly ash collecting device 22.
Therefore, ash slag formed by burning the garbage is collected and reasonably treated, and formed flue gas gradually reaches the emission standard after being filtered, denitrated, desulfurized and cooled.
The thermal decomposition grate furnace system has the advantages that:
1) the material feeding does not need pretreatment, and the equipment is simple, convenient and stable to operate and maintain;
2) the treatment process is free from peculiar smell and is environment-friendly;
3) waste heat recovery, effective cyclic utilization, no need of adding auxiliary fuel, and capability of generating hot water, steam and other resource output;
4) can meet the treatment requirements of different scales: not only can treat domestic garbage, but also can treat sludge and industrial garbage such as textile, printing and dyeing, leather and the like;
5) the thermal ignition loss of the ash is more than or equal to 95 percent, belonging to common solid waste;
6) zero discharge of waste water, standard discharge of tail gas, and characteristic pollutants such as dioxin and the like lower than the national standard.
In conclusion, the thermal decomposition grate furnace system fully burns the garbage and effectively collects the slag ash, the generated flue gas is gradually purified and cooled through the steps of secondary combustion, denitration, desulfurization, dust removal and the like, wherein the energy of the flue gas can be recycled through heat exchange, the combustion and drying in the pyrolysis furnace are facilitated, the full utilization of energy is realized, the flue gas is finally ensured to reach the emission standard, the full utilization of energy is realized, and the garbage is treated in an environment-friendly manner.
The above embodiments have been merely illustrative of the basic principles and features of the present invention, and the present invention is not limited by the above embodiments, and does not depart from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A thermal decomposition grate furnace system is characterized by comprising
The pyrolysis furnace is used for decomposing the garbage at high temperature to form ash and smoke;
the high-temperature dust remover is connected with the gas outlet of the pyrolysis furnace and used for filtering the generated flue gas, and the output end of the high-temperature dust remover is connected with a denitration device;
the waste heat boiler is connected with the output end of the denitration device and used for cooling flue gas;
the air preheater is connected with the output end of the waste heat boiler, an air pipeline is arranged in the air preheater and is communicated with an air distribution pipe of the pyrolysis furnace, and a draught fan is arranged on a connecting pipeline of the air preheater and the air distribution pipe and is used for preheating air in the air pipeline through flue gas heat exchange;
the quenching tower is connected with the output end of the air preheater, the quenching tower is also connected with an alkali liquor conveying device, two fluid spray heads are arranged on the quenching tower, and the flue gas and the alkali liquor are mixed and sprayed into the quenching tower at the two fluid spray heads for flue gas desulfurization and quenching; and the bag-type dust collector is connected with the output end of the quenching tower, is used for filtering particle dust in the flue gas and is connected with a chimney for exhausting.
2. The pyrolytic grate system of claim 1, wherein: the alkali liquor is NaOH solution, the working temperature of the quenching tower is 200-400 ℃, and the liquid sprayed into the quenching tower is evaporated within 2-3 s.
3. The pyrolytic grate system of claim 1, wherein: the working temperature of the pyrolysis furnace is 850 ℃, the working temperature of the high-temperature dust remover is 800-850 ℃, the working temperature of the waste heat boiler is 500-800 ℃, the working temperature of the air preheater is 400-500 ℃, and the working temperature of the bag-type dust remover is 160-200 ℃.
4. The pyrolytic grate system of claim 1, wherein: the alkali liquor conveying device comprises a solution mixing box and a power pump, and the concentration and the flow of the alkali liquor are adjustable.
5. The pyrolytic grate system of claim 1, wherein: the feeding port of the pyrolysis furnace is provided with a hopper, garbage in the garbage storage bin is put into the hopper through a crane grab bucket, and the garbage is fed into the pyrolysis furnace through a feeding device.
6. The pyrolytic grate system of claim 5, wherein: the bottom of the garbage storage bin is connected with a leachate treatment device.
7. The pyrolytic grate system of claim 1, wherein: the pyrolysis furnace adopts a sectional type fire grate structure, the bottom of the pyrolysis furnace is connected with a furnace ash treatment device, the tail end of the fire grate is provided with an ash bucket, and the ash bucket is connected with a furnace slag treatment device.
8. The pyrolytic grate system of claim 7, wherein: the pyrolysis furnace is provided with a second combustion chamber, the bottom of the second combustion chamber is inclined, and an ash outlet of the second combustion chamber is positioned right above the ash hopper.
9. The pyrolytic grate system of claim 1, wherein: the bottoms of the quenching tower and the bag-type dust remover are connected with a fly ash collecting device.
10. The pyrolytic grate system of claim 1, wherein: the waste heat boiler is connected with a cooling tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920753502.XU CN210069852U (en) | 2019-05-23 | 2019-05-23 | Thermal decomposition grate furnace system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920753502.XU CN210069852U (en) | 2019-05-23 | 2019-05-23 | Thermal decomposition grate furnace system |
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| CN210069852U true CN210069852U (en) | 2020-02-14 |
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| CN201920753502.XU Active CN210069852U (en) | 2019-05-23 | 2019-05-23 | Thermal decomposition grate furnace system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056883A (en) * | 2019-05-23 | 2019-07-26 | 江苏利百川环保科技有限公司 | A kind of thermal decomposition furnace grate furnace system |
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2019
- 2019-05-23 CN CN201920753502.XU patent/CN210069852U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056883A (en) * | 2019-05-23 | 2019-07-26 | 江苏利百川环保科技有限公司 | A kind of thermal decomposition furnace grate furnace system |
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