CN209876933U - Waste disposal system based on waste incineration waste heat is recycled - Google Patents
Waste disposal system based on waste incineration waste heat is recycled Download PDFInfo
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- CN209876933U CN209876933U CN201821563889.4U CN201821563889U CN209876933U CN 209876933 U CN209876933 U CN 209876933U CN 201821563889 U CN201821563889 U CN 201821563889U CN 209876933 U CN209876933 U CN 209876933U
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Abstract
The utility model discloses a waste disposal system based on waste incineration waste heat recycling, which comprises a waste dryer, a waste incineration boiler, a waste storage, a centrifugal fan, a waste heat recovery device and a purification system, wherein the waste in the waste storage is conveyed to the waste incineration boiler through a feeding device, the waste heat recovery device is provided with a flue gas inlet, a flue gas outlet, an ambient air inlet and a hot air outlet, the waste incineration boiler is connected with the flue gas inlet of the waste heat recovery device through a flue gas pipeline, the centrifugal fan is communicated with the ambient air inlet of the waste heat recovery device through an air duct, the hot air outlet of the waste heat recovery device conveys heated hot air to the hot air inlet of the waste dryer through the air duct, the flue gas outlet of the waste heat recovery device is output to a chimney through the purification system, the air outlet of the waste dryer conveys dried tail gas to the waste storage, and conveying the tail gas in the garbage storehouse to a garbage incineration boiler through an air duct.
Description
Technical Field
The utility model relates to a refuse treatment technical field specifically indicates a refuse treatment system based on msw incineration waste heat is recycled.
Background
The waste city surrounding has become one of the serious problems which troubles the urban environment development in China, the current main treatment method mainly adopts landfill and incineration power generation, domestic waste mixed and collected in China generally has the defects of high water content, low heat value and the like, and the problems of low heat energy utilization rate, large combustion smoke amount, serious equipment corrosion and the like exist in the incineration power generation process.
Therefore, in order to improve the level of recycling of garbage, a technology for reducing the water content of household garbage is urgently needed.
SUMMERY OF THE UTILITY MODEL
According to not enough among the above prior art, the utility model discloses an aim at solves current rubbish moisture content height, calorific value and hangs down, and the process of burning produces the problem of negative effects to boiler operation and environment, provides a refuse treatment system based on msw incineration waste heat is recycled.
In order to solve the technical problem, the utility model discloses a technical scheme does:
a garbage disposal system based on waste incineration waste heat recycling comprises a garbage dryer, a garbage incineration boiler, a garbage warehouse, a centrifugal fan, a waste heat recovery device and a purification system, wherein an upper feeding machine for feeding garbage is installed at a feeding hole of the garbage dryer, a lower feeding machine for feeding the dried garbage to the garbage warehouse is installed at a discharging hole of the garbage dryer, the garbage in the garbage warehouse is fed to the garbage incineration boiler through the feeding device, a smoke inlet, a smoke outlet, an ambient air inlet and a hot air outlet are formed in the waste heat recovery device, the garbage incineration boiler is connected with the smoke inlet of the waste heat recovery device through a smoke pipeline, the centrifugal fan is communicated with the ambient air inlet of the waste heat recovery device through an air duct, and the hot air outlet of the waste heat recovery device conveys heated hot air to the hot air inlet of the garbage dryer through the air duct, the waste heat recovery device is characterized in that a smoke outlet of the waste heat recovery device is output to a chimney through a purification system, a gas outlet of the garbage dryer conveys dried tail gas to a garbage warehouse, and the tail gas in the garbage warehouse is conveyed to a garbage incineration boiler through a ventilation pipeline.
Preferably, a steam air preheater is arranged between a hot air outlet of the waste heat recovery device and a hot air inlet of the garbage dryer, the steam air preheater comprises two stages of heating sections, a steam turbine is used as a heat source in the first stage of heating section, and main steam is used as a heat source in the second stage of heating section.
Preferably, the steam air preheater is connected with the deaerator and conveys the heated steam condensate to the deaerator.
Preferably, the waste heat recovery device is a flue gas and air heat exchange device, and the waste heat recovery device heats the ambient air to 90-110 ℃.
Preferably, the steam air preheater heats hot air exhausted from the waste heat recovery device to 200 ℃.
Preferably, the purification system comprises a desulfurization and denitration device and a dust remover, a flue gas outlet of the waste heat recovery device is connected with a gas inlet of the desulfurization and denitration device, a gas outlet of the desulfurization and denitration device is connected with a gas inlet of the dust remover, and a gas outlet of the dust remover is communicated to a chimney.
Preferably, the purification system further comprises a bag-type dust collector and a tail gas condensation dehydrator, the gas outlet of the garbage dryer is connected with the bag-type dust collector through a ventilation pipeline, and the gas outlet of the bag-type dust collector conveys the generated tail gas to the garbage bin.
Preferably, the tail gas condensation dehydrator is provided with a cooling natural air inlet and a cooling natural air outlet, and condensed water generated by the tail gas condensation dehydrator is sent to the garbage leachate filter.
The utility model has the following characteristics and beneficial effect:
by adopting the technical scheme, after the raw garbage is treated by the hot air drying system, the water content is reduced to 35% from 50% -65% (the water content changes with seasons), the heat value of the garbage is improved, the production efficiency of the boiler can be effectively improved, the operation working condition of the boiler is improved, the operation stability of the boiler is improved, and the emission of smoke pollutants of the boiler is reduced. The waste heat of the flue gas is recycled to preheat the fresh air in the environment, so that the consumption of steam required by drying hot air is reduced, the garbage drying cost is reduced, and the thermal efficiency of the boiler is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic diagram of the principle of the present invention.
Detailed Description
The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The utility model provides a waste disposal system based on waste incineration waste heat recycling, as shown in figure 1, comprising a waste dryer, a waste incineration boiler, a waste storage, a centrifugal fan, a waste heat recovery device and a purification system, wherein an upper feeding machine for feeding waste is installed at a feeding port of the waste dryer, a lower feeding machine for feeding dried waste to the waste storage is installed at a discharging port of the waste dryer, the waste in the waste storage is fed to the waste incineration boiler through the feeding device, the waste heat recovery device is provided with a flue gas inlet, a flue gas outlet, an ambient air inlet and a hot air outlet, the waste incineration boiler is connected with the flue gas inlet of the waste heat recovery device through a flue gas pipeline, the centrifugal fan is communicated with the ambient air inlet of the waste heat recovery device through an air duct, the hot air outlet of the waste heat recovery device conveys heated hot air to the hot air inlet of the waste dryer through the air duct, the waste heat recovery device is characterized in that a smoke outlet of the waste heat recovery device is output to a chimney through a purification system, a gas outlet of the garbage dryer conveys dried tail gas to a garbage warehouse, and the tail gas in the garbage warehouse is conveyed to a garbage incineration boiler through a ventilation pipeline. A steam air preheater is arranged between a hot air outlet of the waste heat recovery device and a hot air inlet of the garbage dryer and comprises two stages of heating sections, wherein a steam turbine is used for extracting steam as a heat source in the first stage of heating section, and main steam is used as a heat source in the second stage of heating section. And the steam air preheater is connected with the deaerator and conveys the heated steam condensate to the deaerator. The waste heat recovery device is a flue gas and air heat exchange device, and the waste heat recovery device heats ambient air to 90-110 ℃. The steam air preheater heats hot air exhausted by the waste heat recovery device to 200 ℃. The purification system comprises a desulfurization and denitration device and a dust remover, wherein a flue gas outlet of the waste heat recovery device is connected with a gas inlet of the desulfurization and denitration device, a gas outlet of the desulfurization and denitration device is connected with a gas inlet of the dust remover, and a gas outlet of the dust remover is communicated to a chimney. The purification system further comprises a bag-type dust collector and a tail gas condensation dehydrator, the gas outlet of the garbage dryer is connected with the bag-type dust collector through a ventilation pipeline, and the gas outlet of the bag-type dust collector conveys the generated tail gas to the garbage warehouse. And a cooling natural air inlet and a cooling natural air outlet are formed in the tail gas condensation dehydrator, and condensed water generated by the tail gas condensation dehydrator is sent to the garbage leachate filter.
In the technical scheme, the waste incineration boiler is used for incinerating waste to generate steam for power generation; the centrifugal fan provides an air source for the garbage drying system; the waste heat recovery device utilizes a heat exchanger technology to recover the waste heat of the boiler flue gas to preheat the environment fresh air; the steam air preheater heats hot air from the waste heat recovery device by using steam, so that the temperature of the hot air meets the requirement of drying the garbage; the feeding machine feeds the garbage into and discharges the garbage from the garbage dryer, and simultaneously ensures that hot air is not leaked; the garbage dryer dries the primary garbage by using dry hot air; the bag-type dust collector is used for removing dust in tail gas. The tail gas condensation dehydrator utilizes natural wind to cool the tail gas and remove water in the tail gas.
The working principle of the utility model is that the heat exchange technology is utilized to recover the waste heat of the boiler flue gas for heating the environment fresh air, namely, the waste heat recovery device is additionally arranged in front of the horizontal section of the tail smoke channel of the boiler and the deacidification and dust removal device, and the temperature of the environment fresh air is raised to 90 ℃; heating fresh air at 90-110 ℃ after heating enters a steam air preheater to be heated continuously, wherein the steam air preheater is designed to be heated in two stages, the first-stage heating section uses extracted steam of a steam engine as a heat source, the second-stage heating section uses main steam as a heat source, hot fresh air from a waste heat recovery system is heated continuously to 200 ℃ through the steam air preheater, namely the hot fresh air meets the design requirement of a drying system and then is sent to a garbage dryer, and meanwhile, steam condensate of a secondary steam engine of the heating section is sent to a deaerator to be reused; the heated hot air is dried by a garbage dryer and then discharged to rear-end processing devices such as a dust remover, a dehydrator and the like, and saturated tail gas after dust removal and dehydration is discharged into a garbage bin and enters a boiler for combustion supporting through a boiler negative pressure system. And discharging the water of the garbage removed by the dehydrator into a percolate pool for treatment and then discharging the water after reaching the standard.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments, including the components, without departing from the principles and spirit of the invention, and still fall within the scope of the invention.
Claims (8)
1. A garbage treatment system based on waste incineration waste heat recycling is characterized by comprising a garbage dryer, a garbage incineration boiler, a garbage warehouse, a centrifugal fan, a waste heat recovery device and a purification system, wherein an upper feeding machine used for feeding garbage is installed at a feeding hole of the garbage dryer, a lower feeding machine used for feeding the dried garbage to the garbage warehouse is installed at a discharging hole of the garbage dryer, the garbage in the garbage warehouse is fed to the garbage incineration boiler through a feeding device, a smoke inlet, a smoke outlet, an ambient air inlet and a hot air outlet are formed in the waste heat recovery device, the garbage incineration boiler is connected with the smoke inlet of the waste heat recovery device through a smoke pipeline, the centrifugal fan is communicated with the ambient air inlet of the waste heat recovery device through an air vent pipeline, and the hot air outlet of the waste heat recovery device conveys heated hot air to the hot air inlet of the garbage dryer through the air vent pipeline, the waste heat recovery device is characterized in that a smoke outlet of the waste heat recovery device is output to a chimney through a purification system, a gas outlet of the garbage dryer conveys dried tail gas to a garbage warehouse, and the tail gas in the garbage warehouse is conveyed to a garbage incineration boiler through a ventilation pipeline.
2. The waste disposal system based on waste incineration and waste heat recycling as claimed in claim 1, wherein a steam air preheater is disposed between the hot air outlet of the waste heat recovery device and the hot air inlet of the waste dryer, the steam air preheater comprises a first stage heating section and a second stage heating section, the first stage heating section uses steam extracted by a steam turbine as a heat source, and the second stage heating section uses main steam as a heat source.
3. The waste disposal system based on waste incineration waste heat recycling of claim 2, wherein the steam air preheater is connected with a deaerator to deliver heated steam condensate to the deaerator.
4. The waste disposal system based on waste incineration and waste heat recycling of claim 3, wherein the waste heat recovery device is a flue gas and air heat exchange device, and the waste heat recovery device heats ambient air to 90-110 ℃.
5. The waste disposal system based on waste incineration and waste heat recycling of claim 3, wherein the steam air preheater heats hot air exhausted from the waste heat recovery device to 200 ℃.
6. The waste disposal system based on waste incineration and waste heat recycling as claimed in claim 1, wherein the purification system comprises a desulfurization and denitration device and a dust remover, a flue gas outlet of the waste heat recovery device is connected with a gas inlet of the desulfurization and denitration device, a gas outlet of the desulfurization and denitration device is connected with a gas inlet of the dust remover, and a gas outlet of the dust remover is communicated to a chimney.
7. The waste disposal system based on waste incineration waste heat recycling of claim 1, wherein the purification system further comprises a bag-type dust collector and a tail gas condensation dehydrator, an air outlet of the waste dryer is connected with the bag-type dust collector through an air duct, and an air outlet of the bag-type dust collector conveys the generated tail gas to a waste bin.
8. The waste disposal system based on waste incineration waste heat recycling of claim 7, wherein the tail gas condensation dehydrator is provided with a cooling natural air inlet and a cooling natural air outlet, and condensed water generated by the tail gas condensation dehydrator is sent to the waste leachate filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821563889.4U CN209876933U (en) | 2018-09-25 | 2018-09-25 | Waste disposal system based on waste incineration waste heat is recycled |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821563889.4U CN209876933U (en) | 2018-09-25 | 2018-09-25 | Waste disposal system based on waste incineration waste heat is recycled |
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| Publication Number | Publication Date |
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| CN209876933U true CN209876933U (en) | 2019-12-31 |
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| CN201821563889.4U Active CN209876933U (en) | 2018-09-25 | 2018-09-25 | Waste disposal system based on waste incineration waste heat is recycled |
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| CN (1) | CN209876933U (en) |
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2018
- 2018-09-25 CN CN201821563889.4U patent/CN209876933U/en active Active
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