CN210891667U - Domestic waste burns marsh gas utilization equipment of power plant - Google Patents

Domestic waste burns marsh gas utilization equipment of power plant Download PDF

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Publication number
CN210891667U
CN210891667U CN201921229879.1U CN201921229879U CN210891667U CN 210891667 U CN210891667 U CN 210891667U CN 201921229879 U CN201921229879 U CN 201921229879U CN 210891667 U CN210891667 U CN 210891667U
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marsh gas
power plant
biogas
incinerator
domestic waste
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CN201921229879.1U
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钟乐
王进
许岩韦
邵哲如
王沛丽
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Everbright Environmental Protection Technology Equipment Changzhou Co Ltd
Everbright Environmental Protection China Co Ltd
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Everbright Environmental Protection Technology Equipment Changzhou Co Ltd
Everbright Environmental Protection China Co Ltd
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Priority to CN201921229879.1U priority Critical patent/CN210891667U/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/12Heat utilisation in combustion or incineration of waste

Abstract

The utility model provides a domestic waste burns power plant's marsh gas utilization equipment, domestic waste burns power plant's marsh gas utilization equipment sets up the marsh gas entry including burning furnace on burning furnace's the side wall of dry section, and the marsh gas that domestic waste burns power plant's anaerobic reaction device produced passes through the marsh gas entry and gets into in burning furnace, and the cyclone burner sets up in the marsh gas entrance, and anaerobic reaction device is connected with the cyclone burner, and the cyclone burner is used for spouting the marsh gas that anaerobic reaction device produced into burning furnace. The utility model provides a novel marsh gas mode of going into stove has solved the unable problem that perhaps utilization efficiency is not high of marsh gas that produces in the leachate treatment process of domestic waste incineration power plant, on the basis of make full use of energy, pollutant reduction emission, control furnace combustion temperature alleviates the influence to furnace coking risk, simultaneously, can accelerate the drying process of domestic waste in the stove, makes the burning operating mode more stable.

Description

Domestic waste burns marsh gas utilization equipment of power plant
Technical Field
The utility model relates to the field of garbage disposal, in particular to a novel household garbage incineration power plant methane entering furnace process.
Background
With the development of economy and the improvement of the living standard of residents, the quantity of domestic garbage generated by residents in daily life and production is gradually increased. According to statistics, by 2019 and 2 months, the number of the currently-operated waste incineration power plants in China exceeds 400 and reaches 418, and the daily incineration amount of the household waste exceeds 40 million tons. In the process of fermenting the household garbage in the garbage bin, the production amount of the percolate accounts for about 10 percent of the garbage treatment amount, and can reach 25 percent at most. In the process of treating the percolate, a series of processes such as anaerobic fermentation, aerobic fermentation and the like are required. In the anaerobic fermentation process, organic substances in the leachate can generate methane which is mainly methane and contains various combustible gases through chemical reaction, wherein the content of the methane is about 70 percent. At present, most of biogas generated in the leachate treatment process of the waste incineration power plant is directly combusted outdoors or is introduced into a combustion section of an incinerator through a straight pipe. If the marsh gas generated in the percolate treatment process is introduced into the incinerator in a more reasonable mode, not only can the energy be fully utilized and the pollution caused by direct combustion be reduced, but also the garbage combustion in the incinerator can be promoted, especially under the conditions of higher water content and lower heat value of the garbage.
The existing biogas treatment modes of the waste incineration power plant mainly comprise two types: one is direct air-to-air combustion, and the other is introduced into the combustion section of the incinerator or the throat part of the incinerator through a straight pipe. Both methods have certain disadvantages, energy waste can be caused by direct air combustion, and the environment can be polluted by direct air discharge of flue gas generated by combustion. The biogas is sent into a combustion section of the incinerator or a throat part of the incinerator through the straight pipe, so that violent combustion of volatile gas is aggravated, local temperature is overhigh, a large amount of thermal nitrogen oxides are produced, fly ash is fused due to overhigh temperature, and coking in the incinerator is aggravated.
Therefore, it is necessary to provide a biogas utilization device for a domestic waste incineration power plant to at least partially solve the above problems.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model provides a biogas utilization device of a household garbage incineration power plant, which is characterized in that the biogas utilization device of the household garbage incineration power plant comprises an incinerator, the incinerator comprises a drying section and a combustion section, a biogas inlet is arranged on the side wall of the drying section of the incinerator, biogas generated by an anaerobic reaction device of the household garbage incineration power plant enters the incinerator through the biogas inlet,
the household garbage incineration power plant biogas utilization equipment further comprises a cyclone burner, the cyclone burner is arranged at the biogas inlet, the anaerobic reaction device is connected with the cyclone burner, and the cyclone burner is used for spraying biogas generated by the anaerobic reaction device into the incinerator.
In one example, the cyclone burners are symmetrically arranged on both side walls of the incinerator.
In one example, the anaerobic reaction device comprises an anaerobic tank.
In one example, the anaerobic tank is in communication with a waste bin.
In one example, a biogas storage tank is provided between the anaerobic tank and the cyclone burner.
In one example, a fan is arranged between the biogas storage tank and the cyclone burner.
In one example, the incinerator further comprises a burnout section.
The utility model provides a novel marsh gas utilization equipment of domestic waste incineration power plant, domestic waste incineration power plant's marsh gas utilization equipment is including burning furnace, it includes drying section and burning section to burn burning furnace, set up the marsh gas entry on burning furnace's the side wall of drying section, the marsh gas that the anaerobic reaction device of domestic waste incineration power plant produced passes through the marsh gas entry gets into in the burning furnace, near the marsh gas entry of burning furnace's drying section is provided with cyclone, domestic waste incineration power plant's anaerobic reaction device with cyclone connects, the marsh gas that anaerobic reaction device produced passes through cyclone and spout into in the burning furnace.
The utility model provides a novel marsh gas mode of going into stove for solve the unable problem that utilizes or the availability factor is not high of marsh gas that produces in the domestic waste incineration power plant filtration liquid treatment process, and how to realize the problem that the marsh gas optimization of msw incineration power plant utilized. On the basis of fully utilizing energy and reducing pollutant emission, the combustion temperature of the hearth is controlled, and the influence on the coking risk of the hearth is reduced. Meanwhile, the drying process of the household garbage in the furnace can be accelerated, so that the combustion working condition is more stable.
Drawings
The following drawings of the present invention are used herein as part of the present invention for understanding the present invention. There are shown in the drawings, embodiments and descriptions of the invention, which are used to explain the principles of the invention.
In the drawings:
fig. 1 is a schematic structural diagram of a biogas utilization device of a household garbage incineration power plant in an embodiment of the present invention.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the present invention.
In the following description, specific method steps and/or structures are set forth in order to provide a thorough understanding of the present invention. It is apparent that the practice of the invention is not limited to the specific details known to those skilled in the art. The preferred embodiments of the present invention are described in detail below, however, other embodiments of the present invention are possible in addition to these detailed descriptions.
It is to be understood that the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, the size and relative sizes of layers and regions may be exaggerated for clarity. Like reference numerals refer to like elements throughout.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. The singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
The existing biogas treatment modes of the waste incineration power plant mainly comprise two types: one is direct air-to-air combustion, and the other is introduced into the combustion section of the incinerator or the throat part of the incinerator through a straight pipe. Both methods have certain disadvantages, energy waste can be caused by direct air combustion, and the environment can be polluted by direct air discharge of flue gas generated by combustion. The biogas is sent into a combustion section of the incinerator or a throat part of the incinerator through the straight pipe, so that violent combustion of volatile gas is aggravated, local temperature is overhigh, a large amount of thermal nitrogen oxides are produced, fly ash is fused due to overhigh temperature, and coking in the incinerator is aggravated.
The utility model provides a novel marsh gas utilization equipment of domestic waste incineration power plant, domestic waste incineration power plant's marsh gas utilization equipment is including burning furnace, it includes drying section and burning section to burn burning furnace, set up the marsh gas entry on burning furnace's the side wall of drying section, the marsh gas that the anaerobic reaction device of domestic waste incineration power plant produced passes through the marsh gas entry gets into in the burning furnace, near the marsh gas entry of burning furnace's drying section is provided with cyclone, domestic waste incineration power plant's anaerobic reaction device with cyclone connects, the marsh gas that anaerobic reaction device produced passes through cyclone and spout into in the burning furnace.
The utility model provides a novel marsh gas mode of going into stove to solve the unable problem that utilizes or the availability factor is not high of marsh gas that produces in the leachate treatment process of domestic waste incineration power plant to and how to realize the problem that the marsh gas optimization of msw incineration power plant utilized. On the basis of fully utilizing energy and reducing pollutant emission, the combustion temperature of the hearth is controlled, and the influence on the coking risk of the hearth is reduced. Meanwhile, the drying process of the household garbage in the furnace can be accelerated, so that the combustion working condition is more stable.
As shown in fig. 1, the embodiment of the present invention provides a biogas utilization apparatus 100 for a domestic waste incineration power plant, the biogas utilization apparatus 100 for a domestic waste incineration power plant includes an incinerator 110, the incinerator 110 includes a drying section 1, a combustion section 2 and a burnout section 3, a biogas inlet a is arranged on a side wall of the drying section of the incinerator 110, and biogas generated by an anaerobic reaction device of the domestic waste incineration power plant passes through the biogas inlet a and enters the incinerator 110. A cyclone burner (not shown) is disposed near the biogas inlet a on the side wall of the drying section of the incinerator 110, the anaerobic reaction device 120 of the municipal solid waste incineration plant is connected to the cyclone burner, and biogas generated by the anaerobic reaction device 120 is sprayed into the incinerator 110 through the cyclone burner.
In one example, the cyclone burners are symmetrically arranged on both side walls of the incinerator 110.
In one example, the anaerobic reaction device 120 includes an anaerobic tank. In one example, the anaerobic tank is in communication with a waste bin 200.
In one example, a biogas storage tank 300 is provided between the anaerobic tank and the cyclone burner.
In one example, a fan 400 is provided between the biogas storage tank 300 and the cyclone burner.
Leachate generated by the fermentation of the household garbage in the garbage bin 200 is collected to a leachate treatment station, a series of treatment processes such as anaerobic fermentation, aerobic fermentation and the like are carried out, the part reaching the standard is recycled as reclaimed water, and the rest is recycled as leachate concentrated water to be subjected to harmless treatment in a spraying furnace. Biogas generated by the leachate in the anaerobic fermentation process is collected in the biogas storage tank 300 through a pipeline, and finally is sent into the cyclone burner through the fan 400 from the biogas storage tank 300, and is sprayed into the hearth for cyclone combustion through the cyclone burner, and the spraying positions are arranged on the left side wall and the right side wall of the drying section of the incinerator 110.
The novel methane entering mode can realize effective utilization of energy, and avoids energy waste caused by methane to empty combustion and environmental pollution caused by direct emission of combustion flue gas without treatment. Meanwhile, the sprayed methane belongs to high-heat value combustible gas, and can be quickly combusted to release a large amount of heat after being sprayed into the hearth. The position of entering the furnace is arranged at the drying section of the incinerator 110, so that the part of heat is in the garbage drying and heat absorbing stage, the effect of accelerating the drying of the garbage in the furnace is achieved, and the phenomenon that the combustion temperature of a local area is too high, the generation amount of pollutants is increased, and the coking risk of the incinerator 110 is increased due to the mixed combustion of methane and volatile components released by the garbage after entering the furnace is avoided. In addition, the flame that adopts cyclone burner to spout marsh gas into furnace can make marsh gas burning is more stable, and flame is better at furnace's fullness, and flame is shorter a little more, and the burnout rate of marsh gas is higher, avoids adopting the straight tube and the unstable, the low problem of burnout rate of flame that leads to. Especially, in the incinerator 110 with a shorter hearth width, the cyclone burners are simultaneously adopted on the left side and the right side, so that the methane combustion flame can cover the whole hearth width, and the promotion effect of the methane flame on garbage drying is more uniform in the whole hearth width direction.
The novel methane entering process sprays methane into a hearth for combustion by arranging cyclone burners on the left and right side walls of the incinerator 110, and the methane is from an anaerobic fermentation process in the leachate treatment process. The new process can not only avoid the environmental pollution caused by the empty combustion of the marsh gas, but also efficiently recycle the energy released by the marsh gas combustion, and can also accelerate the drying process of the garbage in the furnace. Meanwhile, the increase of pollutant production and the increase of coking risk of the incinerator 110 caused by improper furnace charging mode can be avoided.
The utility model discloses a key point:
1. the left and right side walls of the drying section of the incinerator are provided with a new technology of the position for the methane to enter the incinerator.
2. The novel biogas entering process adopts a cyclone burner as biogas to be sprayed into a hearth.
3. The novel biogas treatment process comprises the step of spraying biogas into the left and right side walls of the drying section of the incinerator by adopting a cyclone burner.
Compared with the prior art, the utility model has the advantages of it is following:
1. the novel methane entering process sends methane into the incinerator for combustion, can realize effective utilization of energy, and avoids energy waste caused by methane to air combustion and environmental pollution caused by direct emission of combustion flue gas without treatment.
2. The methane entering position is arranged at the drying section of the incinerator, so that heat generated by combustion can directly heat garbage, the effect of accelerating the drying of the garbage in the incinerator is achieved, the phenomenon that the combustion temperature of a local area is too high due to the mixed combustion of the methane and the garbage after entering the incinerator, the pollutant generation amount is increased, and the coking risk of the incinerator is increased is avoided.
3. The cyclone burner is adopted to spray the biogas into the hearth, so that the flame for burning the biogas is more stable and dispersed, the flame is shorter, the burnout rate of the biogas is higher, and the problems of unstable flame and low burnout rate caused by the adoption of a straight pipe are avoided.
4. In the incinerator with shorter hearth width, the swirl burners are adopted on the left side and the right side simultaneously to enable methane combustion flame to cover the whole hearth width, and the promotion effect of the flame on garbage drying is ensured to be more uniform in the whole hearth width direction.
The utility model provides a novel marsh gas utilization equipment of domestic waste incineration power plant, domestic waste incineration power plant's marsh gas utilization equipment is including burning furnace, it includes drying section and burning section to burn burning furnace, set up the marsh gas entry on burning furnace's the side wall of drying section, the marsh gas that the anaerobic reaction device of domestic waste incineration power plant produced passes through the marsh gas entry gets into in the burning furnace, near the marsh gas entry of burning furnace's drying section is provided with cyclone, domestic waste incineration power plant's anaerobic reaction device with cyclone connects, the marsh gas that anaerobic reaction device produced passes through cyclone and spout into in the burning furnace.
The utility model provides a novel marsh gas mode of going into stove to solve the unable problem that utilizes or the availability factor is not high of marsh gas that produces in the leachate treatment process of domestic waste incineration power plant to and how to realize the problem that the marsh gas optimization of msw incineration power plant utilized. On the basis of fully utilizing energy and reducing pollutant emission, the combustion temperature of the hearth is controlled, and the influence on the coking risk of the hearth is reduced. Meanwhile, the drying process of the household garbage in the furnace can be accelerated, so that the combustion working condition is more stable.
The utility model discloses a similar replacement or the deformation of individual part or component in the marsh gas utilization equipment of domestic waste incineration power plant all fall into within the protection scope of the utility model.
The present invention has been described in terms of the above embodiments, but it is to be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many more modifications and variations are possible in light of the teaching of the present invention and are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (7)

1. The biogas utilization equipment for the household garbage incineration power plant is characterized by comprising an incinerator, wherein the incinerator comprises a drying section and a combustion section, a biogas inlet is formed in the side wall of the drying section of the incinerator, biogas generated by an anaerobic reaction device of the household garbage incineration power plant enters the incinerator through the biogas inlet,
the household garbage incineration power plant biogas utilization equipment further comprises a cyclone burner, the cyclone burner is arranged at the biogas inlet, the anaerobic reaction device is connected with the cyclone burner, and the cyclone burner is used for spraying biogas generated by the anaerobic reaction device into the incinerator.
2. The biogas utilization apparatus of a municipal solid waste incineration plant according to claim 1, wherein the cyclone burners are symmetrically arranged on both side walls of the incinerator.
3. The biogas utilization apparatus of a municipal solid waste incineration plant according to claim 1, wherein the anaerobic reaction device comprises an anaerobic tank.
4. The biogas utilization equipment of a household garbage incineration power plant as claimed in claim 3, wherein the anaerobic tank is communicated with a garbage bin.
5. The biogas utilization equipment of a household garbage incineration power plant as claimed in claim 3, wherein a biogas storage tank is arranged between the anaerobic tank and the cyclone burner.
6. The biogas utilization equipment of a household garbage incineration power plant as claimed in claim 5, wherein a fan is arranged between the biogas storage tank and the cyclone burner.
7. The biogas utilization apparatus of a municipal solid waste incineration plant according to claim 1, wherein the incinerator further comprises a burnout section.
CN201921229879.1U 2019-07-31 2019-07-31 Domestic waste burns marsh gas utilization equipment of power plant Active CN210891667U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112594692A (en) * 2020-12-15 2021-04-02 西安交通大学 Fuel self-sufficient fly ash molten garbage incineration harmless system and treatment method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112594692A (en) * 2020-12-15 2021-04-02 西安交通大学 Fuel self-sufficient fly ash molten garbage incineration harmless system and treatment method

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