CN213162426U - Waste treatment system - Google Patents
Waste treatment system Download PDFInfo
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- CN213162426U CN213162426U CN202021825737.4U CN202021825737U CN213162426U CN 213162426 U CN213162426 U CN 213162426U CN 202021825737 U CN202021825737 U CN 202021825737U CN 213162426 U CN213162426 U CN 213162426U
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Abstract
The utility model belongs to the refuse treatment field specifically provides a waste treatment system. The utility model discloses it is not abundant to aim at solving the wastes material and stirring, is heated inhomogeneously, and the easy coking of pyrolysis influences the problem that the gas that pyrolysis effect and pyrolysis in-process produced fails to utilize. For this purpose, the utility model comprises a rotary kiln and a melting furnace, wherein the rotary kiln comprises a rotary kiln cylinder, a rotary support and a fixed support, the rotary kiln cylinder comprises an outer cylinder and an inner cylinder, the outer cylinder and the inner cylinder enclose a heating cavity, a material outlet of the inner cylinder is connected with a solid material inlet of the melting furnace through a connecting pipe, and a pyrolysis gas outlet is arranged on the connecting pipe; the outer surface of the inner cylinder penetrating out of the outer cylinder is provided with a rolling shaft, and the rotary support is provided with a driving wheel; the inner surface of the inner cylinder is provided with a plurality of stirring devices, and the rotary kiln burner penetrates through the outer cylinder and then is inserted into the heating cavity. The utility model discloses a pyrolysis is effectual, does benefit to dispersion of wastes material and breakage, avoids appearing local coking and glues wall and the residue melt resource utilization and makes glass.
Description
Technical Field
The utility model belongs to the technical field of solid useless processing, specifically provide organic solid waste processing system.
Background
At present, the annual output of urban solid waste in the world is about 20 hundred million tons, and is estimated to reach 30 hundred million tons in 2025. With the acceleration of urbanization, population growth and industrialization, the yield of municipal solid waste is rapidly increased and is characterized by high organic matter and high moisture content. In China, the organic solid waste accounts for 40-70% of the total amount of the urban solid waste and mainly comprises domestic garbage, domestic sludge, livestock and poultry manure, septic tank manure residue sludge, garden waste, agricultural waste, waste plastic and the like.
The main treatment technologies at present mainly include: incineration, landfill, pyrolysis, fermentation and the like, however, in the process of treating organic solid waste, dioxin is easily generated by direct incineration; by adopting the pyrolysis mode, pollutants generated in the process of treating the organic solid wastes can be obviously reduced. However, in the process of pyrolysis treatment, the conventional pyrolysis device is insufficient in stirring, so that organic waste is heated unevenly, and therefore the organic waste is easy to coke during pyrolysis, the pyrolysis effect is affected, and operation faults are easily caused.
Accordingly, there is a need in the art for a new waste treatment system that addresses the above-mentioned problems of the prior art.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems that the waste in the prior art is not fully stirred, is heated unevenly, is easy to coke during pyrolysis, influences the pyrolysis effect and is easy to cause operation faults, and the gas generated in the pyrolysis process can not be utilized, the utility model provides a waste treatment system, the waste treatment system comprises a rotary kiln and a melting furnace, the rotary kiln comprises a rotary kiln cylinder, a rotary support and a fixed support, the rotary kiln cylinder comprises an outer cylinder and an inner cylinder, the outer cylinder and the inner cylinder jointly enclose a heating cavity, a smoke outlet is arranged on the outer cylinder and is communicated with the heating cavity, a material inlet and a material outlet are arranged at two ends of the inner cylinder, the material outlet is connected with a solid material inlet of the melting furnace through a connecting pipe, a rotary connecting piece is arranged between the connecting pipe and the material outlet, and a pyrolysis gas outlet is formed in the connecting pipe;
the outer surface of the inner cylinder penetrating out of the outer cylinder is provided with a rolling shaft, and the rotary support is provided with a driving wheel; the rolling shaft is abutted against the driving wheel, and the rotary support is also provided with a driving device which is connected with the driving wheel; the inner surface of the inner barrel is provided with a plurality of stirring devices, the rotary kiln also comprises a rotary kiln combustor, and the rotary kiln combustor penetrates through the outer barrel and then is inserted into the heating cavity;
the outer cylinder is fixedly arranged on the fixed support;
the melting furnace is also provided with a melting furnace burner;
the driving device drives the driving wheel to rotate to drive the rolling shaft to enable the inner barrel to rotate, so that the stirring device disperses and crushes the waste in the inner barrel, the waste is introduced into the melting furnace for melting treatment after high-temperature pyrolysis, and pyrolysis gas generated by the high-temperature pyrolysis is discharged through the pyrolysis gas outlet.
In a preferred embodiment of the above waste disposal system, the stirring device is fixedly installed on the inner side surface of the inner cylinder, and the stirring device is a chain, an inner spiral scraper or an inner spiral protruding block.
In a preferred technical solution of the above waste treatment system, the rotary kiln further includes a blower, and the blower is communicated with the rotary kiln burner.
In a preferred embodiment of the above waste treatment system, the inner cylinder is disposed obliquely, and one end of the material inlet is higher than one end of the material outlet.
In a preferred embodiment of the above waste treatment system, the melter burner comprises an oxygen-enriched burner and a plasma torch.
In a preferred embodiment of the above waste treatment system, the waste treatment system further comprises a gas treatment device, an inlet of the gas treatment device is communicated with the pyrolysis gas outlet, and an outlet of the gas treatment device is communicated with the rotary kiln burner and/or the melting furnace burner.
In a preferred technical scheme of the waste treatment system, the gas treatment device comprises a gas-liquid separation device and a deacidification device which are sequentially communicated.
In a preferred embodiment of the above waste treatment system, the waste treatment system further comprises a cooling tank, and an inlet of the cooling tank is connected to a solid material outlet of the melting furnace.
In the preferable technical scheme of the above waste treatment system, the waste treatment system further comprises a flue gas purifier, the flue gas purifier is communicated with the flue gas outlet, the flue gas purifier comprises a denitration device, a desulfurization device and an activated carbon adsorption device, and the denitration device, the desulfurization device and the activated carbon adsorption device are sequentially communicated.
In a preferred technical scheme of the waste treatment system, the waste treatment system further comprises a feeding bin, and an output port of the feeding bin is communicated with a material inlet of the rotary kiln cylinder through a feeding screw device.
The person in the art can understand, in the technical scheme of the utility model, the waste disposal system includes rotary kiln and melting furnace, the rotary kiln includes a rotary kiln section of thick bamboo, slewing bracket and fixed bolster, a rotary kiln section of thick bamboo includes urceolus and inner tube, urceolus and inner tube enclose out a heating cavity jointly, be provided with the flue gas outlet on the urceolus and with heating cavity intercommunication, material import and material outlet have been seted up at the both ends of inner tube, the material outlet is connected through the connecting pipe with the solid material import of melting furnace, be equipped with the rotary connecting piece between connecting pipe and the material outlet, the pyrolysis gas export has been seted up on the connecting pipe;
the outer surface of the inner cylinder penetrating out of the outer cylinder is provided with a rolling shaft, and the rotary support is provided with a driving wheel; the rolling shaft is abutted against the driving wheel, and the rotary bracket is also provided with a driving device which is connected with the driving wheel; the inner surface of the inner cylinder is provided with a plurality of stirring devices, the rotary kiln also comprises a rotary kiln burner, and the rotary kiln burner penetrates through the outer cylinder and then is inserted into the heating cavity;
the outer cylinder is fixedly arranged on the fixed support;
the melting furnace is also provided with a melting furnace burner;
the driving device drives the driving wheel to rotate, the rolling shaft is driven to enable the inner barrel to rotate, the stirring device disperses and crushes waste in the inner barrel, the waste is introduced into the melting furnace after high-temperature pyrolysis for melting treatment, and pyrolysis gas generated by the high-temperature pyrolysis is discharged through a pyrolysis gas outlet.
Through the above setting mode, make the utility model discloses when handling the wastes material, the wastes material is heated evenly, and the pyrolysis is effectual, and the heat utilization efficiency is high, reduces the energy consumption, does benefit to with wastes material dispersion and breakage, avoids appearing the wastes material and glues phenomenons such as wall because of being heated uneven local coking and appearing. The residues generated after the pyrolysis and gasification of the wastes are melted to prepare the glass, thereby achieving the effect of recycling the residues to be used as building materials. Less harmful gas is generated.
Drawings
The waste treatment system of the present invention will be described with reference to the accompanying drawings. In the drawings:
fig. 1 is a schematic structural diagram of a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a second embodiment of the present invention.
List of reference numerals:
1-rotary kiln cylinder, 101-outer cylinder, 1011-smoke outlet, 102-inner cylinder, 1021-material inlet, 1022-material outlet, 103-rolling shaft, 104-stirring device,
2-a rotary bracket, 3-a fixed bracket,
4-melting furnace, 401-solid material inlet, 402-solid material outlet,
5-connecting pipe, 501-outlet of pyrolysis gas,
6-rotary connecting piece, 7-driving wheel, 8-rotary kiln burner, 9-melting furnace burner, 10-blower, 11-gas processing device, 12-cooling tank, 13-flue gas purifier, 14-feeding bin and 15-feeding screw device.
Detailed Description
Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. And can be adjusted as needed by those skilled in the art to suit particular applications. For example, although the description is given by taking an example in which the rolling shaft abuts against the driving wheel to rotate the driving inner cylinder, it is obvious that the present invention can adopt other similar means, such as replacing the rolling shaft and the driving wheel with corresponding gears and engaging and connecting to rotate the driving inner cylinder, as long as the inner cylinder can be effectively driven to rotate.
It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate directions or positional relationships based on those shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1-2, in order to solve the problems of insufficient stirring, uneven heating, easy coking during pyrolysis and influence on the pyrolysis effect of the existing waste, the waste treatment system of the utility model comprises a rotary kiln and a melting furnace 4, the rotary kiln comprises a rotary kiln cylinder 1, a rotary bracket 2 and a fixed bracket 3, the rotary kiln cylinder 1 comprises an outer cylinder 101 and an inner cylinder 102, the outer cylinder 101 and the inner cylinder 102 jointly enclose a heating cavity, the outer cylinder 101 is provided with a flue gas outlet 1011 and communicated with the heating cavity, two ends of the inner cylinder 102 are provided with a material inlet 1021 and a material outlet 1022, the material outlet 1022 is connected with a solid material inlet 401 of the melting furnace 4 through a connecting pipe 5, a rotary connecting piece 6 is arranged between the connecting pipe 5 and the material outlet 1022, and the connecting pipe 5 is provided with a pyrolysis gas outlet;
the outer surface of the inner cylinder 102 penetrating out of the outer cylinder 101 is provided with a rolling shaft 103, and the rotary support 2 is provided with a driving wheel 7; the rolling shaft 103 is abutted with the driving wheel 7, and the rotary bracket 2 is also provided with a driving device (not shown in the figure) which is connected with the driving wheel 7; the inner surface of the inner cylinder 102 is provided with a plurality of stirring devices 104, the rotary kiln also comprises a rotary kiln combustor 8, and the rotary kiln combustor 8 penetrates through the outer cylinder 101 and then is inserted into the heating cavity;
the outer cylinder 101 is fixedly arranged on the fixed support 3;
the melting furnace 4 is also provided with a melting furnace burner 9;
the driving device drives the driving wheel 7 to rotate, the rolling shaft 103 is driven to enable the inner barrel 102 to rotate, the stirring device 104 disperses and crushes waste in the inner barrel 102, the waste is introduced into the melting furnace 4 for melting treatment after high-temperature pyrolysis, and pyrolysis gas generated by the high-temperature pyrolysis is discharged through a pyrolysis gas outlet 501.
In another possible embodiment, as shown in fig. 1-2, the waste treatment system further comprises a feed bin 14, the output of the feed bin 14 being in communication with a material inlet 1021 of the rotary kiln cylinder 1 via a feed screw 15.
The setting mode has the advantages that: through setting up agitating unit 104 and combining the inner tube 102 rotation for the waste is heated evenly, and the pyrolysis is effectual, and heat utilization efficiency is high, reduces the energy consumption, does benefit to with waste dispersion and breakage, avoids appearing the waste because of being heated uneven and appear phenomenon such as local coking and glue the wall. The residues generated after the pyrolysis and gasification of the wastes are melted to prepare the glass, thereby achieving the effect of recycling the residues to be used as building materials. Less harmful gas is generated.
In one possible embodiment, the stirring device 104 is fixedly mounted on the inner surface of the inner cylinder 102, and the stirring device 104 is a chain in FIG. 1, but it can also be an internal helical scraper or an internal helical protrusion, as long as stirring is achieved.
The agitating devices 104 are evenly distributed on the inside of the inner barrel 102.
The chain can be suspended at one end and fixed to the inside surface of the inner cylinder 102, as shown in fig. 1. The chain may be fixed at both ends to the inner surface of the inner cylinder 102, as shown in fig. 2, and the arrangement direction of the chain may be changed arbitrarily, for example, it may be arranged to rotate 90 ° with respect to fig. 1, as long as it can perform the stirring function.
The setting mode has the advantages that: each agitation device 104 may agitate the solid waste while accelerating heat transfer to increase reaction rate and heat utilization.
As shown in fig. 1-2, in another possible embodiment, the rotary kiln further comprises a blower 10, the blower 10 being in communication with the rotary kiln burner 8.
The setting mode has the advantages that: sufficient combustion-supporting gas is supplied to the rotary kiln burner 8 by the blower 10 so that the working efficiency of the rotary kiln burner 8 can be maintained.
1-2, in another possible embodiment, the inner barrel 102 is inclined with an end of the material inlet 1021 being higher than an end of the material outlet 1022.
The setting mode has the advantages that: the waste is convenient to discharge from the inner cylinder 102, and the treatment efficiency is improved.
In another possible embodiment, as shown in fig. 1-2, the waste treatment system further comprises a gas treatment device 11, the inlet of the gas treatment device 11 being in communication with the pyrolysis gas outlet 501, and the outlet of the gas treatment device 11 being in communication with the rotary kiln burner 8 and/or the melter burner 9.
The gas treatment device 11 includes a gas-liquid separation device and a deacidification device which are sequentially communicated.
The setting mode has the advantages that: the gas discharged from the pyrolysis gas outlet 501 is treated, and the pyrolysis gas, the mixed oil and the water are separated by a gas-liquid separation device. The high-temperature pyrolysis gas generated by the rotary kiln is used for the rotary kiln combustor 8 and the melting furnace combustor 9, so that the heat efficiency is improved, the energy consumption is reduced, the energy can be saved, and the problems of difficult operation, difficult maintenance, serious heat dissipation and the like caused by an external heat source (such as molten salt) are solved.
In another possible embodiment, as shown in fig. 1-2, the melter burner 9 comprises an oxygen enrichment burner and a plasma torch.
The setting mode has the advantages that: and further removing organic components in the waste residues, directly starting the oxygen-enriched combustion burner to heat the common residues with low melting point and high carbon content to a molten state, and simultaneously starting the plasma burner and the oxygen-enriched combustor to melt the residues with high ash melting point and low carbon content.
As shown in fig. 1-2, in another possible embodiment, the waste treatment system further comprises a cooling tank 12, an inlet of the cooling tank 12 being connected to a solids outlet 402 of the melting furnace 4.
The setting mode has the advantages that: the molten mass in the melting furnace 4 is cooled to be made into glass, and the inlet of the cooling tank 12 is directly connected with the solid material outlet 402, so that the treatment efficiency of the waste molten residues is improved.
As shown in fig. 1-2, in another possible embodiment, the waste treatment system further comprises a flue gas purifier 13, the flue gas purifier 13 is communicated with the flue gas outlet 1011, the flue gas purifier 13 comprises a denitration device, a desulfurization device and an activated carbon adsorption device, and the denitration device, the desulfurization device and the activated carbon adsorption device are sequentially communicated.
The setting mode has the advantages that: through the arrangement of the smoke purifier 13, smoke generated by combustion of the rotary kiln combustor can be purified, and the purpose of protecting the environment is achieved.
The working principle of the present invention is explained below:
the solid waste is fed through the feed bin 14 and conveyed into the interior of the rotary kiln barrel 1 by the feed screw 15, moves from the material inlet 1021 to the material outlet 1022 under the agitation of the solid waste agitating device 104, and exchanges heat with the contact with the interior of the heating chamber. Pyrolysis gas generated by pyrolysis of the solid waste in the rotary kiln barrel 1 is discharged from a pyrolysis gas outlet 501 of the connecting pipe 5, and is respectively input into a rotary kiln burner 8 and a melting furnace burner 9 after purification treatment to be continuously used as supplementary fuel. And (3) introducing the pyrolyzed solid waste residues into a melting furnace 4, further melting into glass bodies, and sending the high-temperature glass bodies into a cooling tank 12 for cooling to obtain glass slag. High-temperature flue gas generated by combustion of the combustor is purified to meet the emission requirement and then is discharged into the atmosphere.
To sum up, the utility model discloses a waste treatment system can make the waste material be heated evenly, and the pyrolysis is effectual, and the heat utilization rate is high, reduces the energy consumption, and every agitating unit 104 all can mix solid waste, does benefit to waste dispersion and breakage, avoids appearing the waste because of being heated uneven and local coking appears and glues phenomenons such as wall, and heat transfer improvement reaction rate and heat utilization rate accelerate simultaneously. The gas discharged from the pyrolysis gas outlet 501 is treated, and the pyrolysis gas, the mixed oil and the water are separated by a gas-liquid separation device. The high-temperature pyrolysis gas generated by the rotary kiln is used for the rotary kiln combustor 8 and the melting furnace combustor 9, so that the heat efficiency is improved, the energy consumption is reduced, the energy can be saved, and the problems of difficult operation, difficult maintenance, serious heat dissipation and the like caused by an external heat source (such as molten salt) are solved. Sufficient combustion supporting gas is supplied to the rotary kiln burner 8 by the blower 10 to maintain the operating efficiency of the rotary kiln burner 8. Organic components in the waste residues are removed through a burner 9 of the melting furnace, the oxygen-enriched combustion nozzle is directly opened to heat the common residues with low melting point and high carbon content to a molten state, and the plasma nozzle and the oxygen-enriched burner can be simultaneously opened to melt the residues with high ash melting point and low carbon content. The residues generated after the waste is pyrolyzed and gasified can be melted to be made into glass, and the effect of recycling the residues to be used as building materials is achieved. Less harmful gas is generated.
It should be noted that the above-mentioned embodiments are only used for illustrating the principle of the present invention, and are not intended to limit the protection scope of the present invention, and those skilled in the art can adjust the above-mentioned structure without deviating from the principle of the present invention, so that the present invention can be applied to more specific application scenarios.
For example, in an alternative embodiment, the arrangement of the rolling shaft 103 and the driving wheel 7 is not necessarily so long as the inner cylinder 102 can be effectively driven to rotate, for example, the rolling shaft 103 and the driving wheel 7 can be replaced by a pair of gears and meshed for connection, etc., without departing from the principle of the present invention, and thus all will fall within the protection scope of the present invention.
So far, the technical solution of the present invention has been described with reference to the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, a person skilled in the art can make equivalent changes or substitutions to the related technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.
Claims (10)
1. A waste treatment system is characterized by comprising a rotary kiln and a melting furnace, wherein the rotary kiln comprises a rotary kiln cylinder, a rotary support and a fixed support, the rotary kiln cylinder comprises an outer cylinder and an inner cylinder, the outer cylinder and the inner cylinder jointly enclose a heating cavity, a flue gas outlet is formed in the outer cylinder and communicated with the heating cavity, a material inlet and a material outlet are formed in two ends of the inner cylinder, the material outlet is connected with a solid material inlet of the melting furnace through a connecting pipe, a rotary connecting piece is arranged between the connecting pipe and the material outlet, and a pyrolysis gas outlet is formed in the connecting pipe;
the outer surface of the inner cylinder penetrating out of the outer cylinder is provided with a rolling shaft, and the rotary support is provided with a driving wheel; the rolling shaft is abutted against the driving wheel, and the rotary support is also provided with a driving device which is connected with the driving wheel; the inner surface of the inner barrel is provided with a plurality of stirring devices, the rotary kiln also comprises a rotary kiln combustor, and the rotary kiln combustor penetrates through the outer barrel and then is inserted into the heating cavity;
the outer cylinder is fixedly arranged on the fixed support;
the melting furnace is also provided with a melting furnace burner;
the driving device drives the driving wheel to rotate to drive the rolling shaft to enable the inner barrel to rotate, so that the stirring device disperses and crushes the waste in the inner barrel, the waste is introduced into the melting furnace for melting treatment after high-temperature pyrolysis, and pyrolysis gas generated by the high-temperature pyrolysis is discharged through the pyrolysis gas outlet.
2. The waste disposal system of claim 1, wherein said agitating means is fixedly mounted to an inside surface of said inner drum, said agitating means being a chain, an internally-rotating scraper, or an internally-rotating raised block.
3. The waste treatment system of claim 1, wherein the rotary kiln further comprises a blower in communication with the rotary kiln burner.
4. A waste disposal system as claimed in claim 1, wherein the inner drum is inclined with an end of the material inlet higher than an end of the material outlet.
5. The waste treatment system of claim 1, wherein the melter burner comprises an oxygen-enriched burner and a plasma torch.
6. The waste treatment system of claim 1, further comprising a gas treatment device, an inlet of the gas treatment device being in communication with the pyrolysis gas outlet, and an outlet of the gas treatment device being in communication with the rotary kiln burner and/or the melter burner.
7. A waste treatment system as claimed in claim 6, wherein the gas treatment means comprises a gas-liquid separation device and a deacidification device in series communication.
8. The waste treatment system of claim 1, further comprising a cooling tank, an inlet of the cooling tank being connected to a solids outlet of the melting furnace.
9. The waste treatment system of claim 1, further comprising a flue gas purifier in communication with the flue gas outlet, the flue gas purifier including a denitrification device, a desulfurization device, and an activated carbon adsorption device, the denitrification device, the desulfurization device, and the activated carbon adsorption device being in sequential communication.
10. The waste treatment system of claim 1, further comprising a feed bin, an output port of the feed bin communicating with a material inlet of the rotary kiln barrel via a feed screw.
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| CN202021825737.4U CN213162426U (en) | 2020-08-27 | 2020-08-27 | Waste treatment system |
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| CN202021825737.4U CN213162426U (en) | 2020-08-27 | 2020-08-27 | Waste treatment system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115261035A (en) * | 2022-07-04 | 2022-11-01 | 深圳嘉信量子科技集团有限公司 | Garbage dry distillation system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115261035A (en) * | 2022-07-04 | 2022-11-01 | 深圳嘉信量子科技集团有限公司 | Garbage dry distillation system and method |
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