CN112694900A - Organic solid waste treatment system and treatment method - Google Patents
Organic solid waste treatment system and treatment method Download PDFInfo
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- CN112694900A CN112694900A CN202110016007.2A CN202110016007A CN112694900A CN 112694900 A CN112694900 A CN 112694900A CN 202110016007 A CN202110016007 A CN 202110016007A CN 112694900 A CN112694900 A CN 112694900A
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000006243 chemical reaction Methods 0.000 claims abstract description 79
- 229910052736 halogen Inorganic materials 0.000 claims abstract description 60
- 150000002367 halogens Chemical class 0.000 claims abstract description 60
- 239000002253 acid Substances 0.000 claims abstract description 52
- 238000004140 cleaning Methods 0.000 claims abstract description 49
- 238000000197 pyrolysis Methods 0.000 claims abstract description 49
- 239000002910 solid waste Substances 0.000 claims abstract description 48
- 230000009467 reduction Effects 0.000 claims abstract description 29
- 239000007789 gas Substances 0.000 claims description 77
- 239000002296 pyrolytic carbon Substances 0.000 claims description 54
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims description 15
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
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Abstract
The invention discloses an organic solid waste treatment system and a treatment method, wherein the treatment system comprises: a pyrolysis reaction unit; an acid gas abatement unit connected to the pyrolysis reaction unit; a resource conversion unit connected to the acid gas reduction unit; and a cleaning unit, one end of which is connected with the acid gas reducing unit and the other end of which is connected with the resource converting unit. The invention solves the problem of generation of highly toxic pollutants due to the existence of halogen-containing organic matters in the process of recycling organic solid waste resources.
Description
Technical Field
The invention belongs to the field of solid waste recycling treatment, and particularly relates to an organic solid waste treatment system and method.
Background
At present, the annual output of organic solid wastes such as living sources, agricultural sources, industrial sources and the like in China exceeds 60 hundred million tons, and accounts for more than 60 percent of the total output of the solid wastes. Because the organic solid waste in China has relatively complex components, including agricultural straws, sludge, kitchen waste, traditional Chinese medicine residues, waste tires and the like, has resources such as carbon, nitrogen and phosphorus, has pollution elements such as heavy metals, has both resource attributes and pollution attributes, but a scientific and reasonable management and safe disposal technical system is not formed yet. Comprehensively, scientific and technological innovation for recycling organic solid wastes is currently an important opportunity and challenge. The recycling, harmless and reduction treatment of the organic solid waste is used as the treatment mode of the organic solid waste which is rapidly developed at present, and the volume and the mass of the organic solid waste can be reduced by 90 percent and 70 to 80 percent. The heat generated by burning the organic solid waste (such as household garbage) can be used for generating power, and the aims of harmlessness, reduction and resource utilization of garbage treatment can be fulfilled, but halogen-containing organic matters in the organic solid waste can generate dioxin and other highly toxic pollutants which are difficult to decompose.
Disclosure of Invention
The invention aims to provide an organic solid waste treatment system and a treatment method, which solve the problem of generation of highly toxic pollutants due to the existence of halogen-containing organic matters in the organic solid waste resource recycling process.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the present invention provides an organic solid waste treatment system, comprising:
a pyrolysis reaction unit;
an acid gas abatement unit connected to the pyrolysis reaction unit;
a resource conversion unit connected to the acid gas reduction unit;
and a cleaning unit, one end of which is connected with the acid gas reducing unit and the other end of which is connected with the resource converting unit.
In one embodiment of the present invention, the organic solid waste treatment system further comprises a pulverizing unit, one end of which is connected to the cleaning unit, and the other end of which is connected to the resource converting unit.
In one embodiment of the present invention, the organic solid waste treatment system further comprises a waste mixing unit connected to the pyrolysis reaction unit.
In one embodiment of the invention, the waste material in the waste material mixing unit is conveyed into the pyrolysis reaction unit by a screw feeder.
In one embodiment of the invention, the waste mixing unit comprises an alkaline oxide or an alkaline hydroxide. In one embodiment of the present invention, the pyrolysis reaction unit employs any one of a screw-type reactor, a rotary reactor, and a drop-type reactor.
In one embodiment of the present invention, the organic solid waste treatment system further includes a heat supply unit connected to the pyrolysis reaction unit and the acid gas abatement unit.
In one embodiment of the invention, the heat supply unit is connected with the resource conversion unit.
In one embodiment of the invention, part of the high-temperature flue gas in the heat supply unit is led to and contacted with the outer wall of the pyrolysis reaction unit, and the high-temperature gas generated by combustion of part of the high-temperature flue gas mixed gas in the heat supply unit is led to the inside of the pyrolysis reaction unit and contacted with the organic solid waste.
The invention also provides an organic solid waste treatment method, which at least comprises the following steps:
putting the organic solid waste into a pyrolysis reaction unit, and carrying out thermal decomposition reaction to obtain halogen-containing volatile components and pyrolytic carbon;
introducing the obtained halogen-containing volatile matter and the pyrolytic carbon into an acid gas reduction unit to obtain halogen-free combustible gas and halogen-containing pyrolytic carbon;
introducing the combustible gas without halogen into a resource conversion unit for use;
introducing the pyrolytic carbon containing halogen into a cleaning unit to obtain pyrolytic carbon containing no halogen;
and introducing the halogen-free pyrolytic carbon into the resource conversion unit for use.
The invention removes the halogen in the organic solid waste by arranging the acid gas reducing unit and the cleaning unit, thereby solving the problem of generating highly toxic pollutants due to the existence of halogen-containing organic matters in the recycling process of organic solid waste resources.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a block diagram of an organic solid waste treatment system according to the present invention;
FIG. 2 is a schematic view of a portion of the organic solid waste treatment system of FIG. 1;
FIG. 3 is a schematic diagram of the configuration of the acid gas abatement unit of FIG. 1;
FIG. 4 is a schematic structural view of the cleaning unit of FIG. 1;
FIG. 5 is a process flow diagram of the organic solid waste treatment process of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The organic solid waste comprises domestic garbage, sludge, landscaping solid waste, activated carbon powder, waste tires and the like. The organic solid waste is subjected to resource treatment, so that the volume of the organic solid waste is reduced by 90 percent, and the mass of the organic solid waste is reduced by 70 to 80 percent. The energy storage and energy consumption of China are mainly coal, and the thermal power generation amount still accounts for more than 80% of the total national power generation amount. The pulverized coal furnace belongs to a high-temperature industrial furnace, has large heat capacity and strong interference resistance, can effectively inhibit the generation of dioxin, and simultaneously has a perfect flue gas purification system in a thermal power plant. The method has the advantages that the pulverized coal furnace is utilized to cooperatively treat urban organic solid wastes, so that the conversion and utilization of the organic solid wastes can be realized, the secondary pollution caused by solid waste treatment is effectively controlled, and the solid waste treatment cost is saved, so that the purposes of harmlessness, reduction and recycling of the organic solid wastes are realized, but the high content of combustion pollutants, particularly halogen, is another problem in cooperative treatment. Compared with pollutants generated by coal combustion, the halogen pollutants generated by household garbage incineration are high in content, the pulverized coal boiler in the prior art is used for mixing and burning the garbage, the garbage is converted into volatile matters and pyrolysis semicoke through pyrolysis and is respectively sent into the pulverized coal furnace, but the pollutants in the household garbage are all brought into the pulverized coal furnace, serious corrosion risks are brought to a heating surface at the tail part of the pulverized coal furnace, and simultaneously tar in the volatile matters is all sent to a hearth of the pulverized coal furnace.
Referring to fig. 1 to 4, the present invention provides an organic solid waste treatment system, which includes: a waste mixing unit 100, a pyrolysis reaction unit 101, an acid gas curtailment unit 103, a resource conversion unit 106, a pulverization unit 105, a cleaning unit 104, and a heat supply unit 102. The pyrolysis reaction unit 101 is connected to the waste mixing unit 100, the acid gas reducing unit 103 is connected to the pyrolysis reaction unit 101, the resource converting unit 106 is connected to the acid gas reducing unit 103, one end of the cleaning unit 104 is connected to the acid gas reducing unit 103, the other end of the cleaning unit 104 is connected to the resource converting unit 106, one end of the pulverizing unit 105 is connected to the cleaning unit 104, the other end of the pulverizing unit 105 is connected to the resource converting unit 106, and the heat supplying unit 102 is connected to the pyrolysis reaction unit 101, the acid gas reducing unit 103, and the resource converting unit 106.
Referring to fig. 1, in some embodiments, the organic solid waste is fed into a waste mixing unit 100, and mixed with an alkali oxide or an alkali hydroxide, which may be in a powder form or a granule form, such as one or more of CaO, MgO, CaOH, or MgOH. In the waste mixing unit 100, the organic solid waste is mixed with the basic oxide or the basic hydroxide with stirring, so that the organic solid waste is sufficiently mixed with the basic oxide or the basic hydroxide.
Referring to fig. 1, in some embodiments, the organic solid waste mixed with the alkaline oxide or hydroxide may be fed to the pyrolysis reaction unit 101 through a material conveying device. In the present embodiment, the organic solid waste mixed with the basic oxide or the basic hydroxide is fed to the pyrolysis reaction unit 101 by using, for example, a screw feeder.
Referring to fig. 1 and 2, in some embodiments, the pyrolysis reaction unit 101 may decompose the organic solid waste by heating, thereby obtaining available resources, the working temperature of the pyrolysis reaction unit 101 is, for example, 480-, in some embodiments, the pyrolysis reaction unit 101 may employ any one of a screw-type reactor, a rotary reactor, or a falling-type reactor, in the pyrolysis reaction unit 101, the organic solid waste material undergoes a thermal decomposition reaction to generate halogen-containing volatile 1600 and pyrolysis carbon, wherein the halogen-containing volatile 1600 includes non-condensable gases (e.g. methane, ethane, ethylene, hydrogen, carbon monoxide, etc.) and tars at ambient temperature, as well as halogen impurities, the halogen impurities in the system can generate toxic pollutants in subsequent combustion, and can corrode subsequent high-temperature equipment, so that the service life of the rear-section high-temperature equipment in the system is influenced.
Referring to fig. 1 and 3, in some embodiments, the obtained halogen-containing volatile 1600 and the pyrolytic carbon are introduced into an acid gas abatement unit 103 to obtain a halogen-free combustible gas 1700 and a halogen-containing pyrolytic carbon, and the operating temperature of the acid gas abatement unit 103 is, for example, 600 ℃ or 800 ℃. Specifically, the volatile matter 1600 containing halogen generated by the pyrolysis reaction unit 101 is sent to the acid gas reduction unit 103 through a heat preservation pipeline, for example, the pyrolytic carbon generated by the pyrolysis reaction unit 101 can be sent to the acid gas reduction unit 103 through a material conveying device, for example, the pyrolytic carbon is sent to the acid gas reduction unit 103 through a screw feeder or a belt conveying device, in the acid gas reduction unit 103, the alkaline oxide or the alkaline hydroxide absorbs halogen in the volatile matter and catalytically cracks all tar in the volatile matter for reforming and upgrading, and the combustible gas 1700 containing no halogen is obtained. In the acid gas reduction unit 103, the pyrolytic carbon can also absorb halogen impurities in volatile matters, reform and upgrade the volatile matters, and is also beneficial to obtaining the halogen-free combustible gas 1700.
Referring to fig. 1 and fig. 2, the resource conversion unit 106 may be a high-temperature device, and converts and utilizes available resources obtained by decomposing the organic solid waste through the cooperative disposal of the resource conversion unit 106, in this embodiment, in the resource conversion unit 106, the combustible gas 1700 without halogen obtained by the acid gas reduction unit 103 is introduced into the resource conversion unit 106 for resource conversion and utilization. Specifically, in some embodiments, the resource conversion unit 106 may be, for example, a pulverized coal furnace, and the halogen-free combustible gas 1700 obtained by the acid gas reduction unit 103 is introduced into the pulverized coal furnace for combustion of pulverized coal in the pulverized coal furnace, so as to perform thermal power generation. In some embodiments, the pyrolytic carbon absorbing halogen impurities in volatile components is also fed into the resource conversion unit 106 in the acid gas reduction unit 103 for resource conversion and utilization, and in this embodiment, the pyrolytic carbon containing halogen impurities obtained by the acid gas reduction unit 103 is fed into a pulverized coal furnace to be combusted together with pulverized coal in the pulverized coal furnace for thermal power generation.
Referring to fig. 1, fig. 2 and fig. 3, in some embodiments, the pyrolytic carbon and the alkaline oxide or alkaline hydroxide, which have absorbed the halogen impurities in the volatile components in the acid gas abatement unit 103, may be introduced into the cleaning unit 104, and the cleaning unit 104 contains a cleaning solution for cleaning, in this embodiment, the cleaning solution may be one or more of tap water, purified water or distilled water, or other substances capable of dissolving the halogen therein, which is not specifically limited in this application. The cleaning unit 104 may further include a screw conveyor, which is driven by a motor 114 and stirs and conveys the pyrolytic carbon and the cleaning solution in the cleaning unit 104, so that the halogen impurities in the pyrolytic carbon are cleaned more cleanly, and the cleaned pyrolytic carbon is sent to the carbon outlet 113 of the cleaning unit 104. The cleaning unit 104 is provided with a partition board near the bottom wall, the partition board can be provided with a plurality of liquid-dredging holes, the cleaning liquid is sent into the cleaning unit 104 through a plurality of liquid inlets 110, the cleaned residual liquid flows out from a plurality of liquid-dredging holes 111 to be led to the liquid outlet 112 on the bottom wall of the cleaning unit 104 and is discharged from the liquid outlet 112, and meanwhile, the pyrolytic carbon sent in by the carbon inlet 115 is discharged from the carbon outlet 113 of the cleaning unit 104 after being cleaned.
Referring to fig. 1, 2 and 4, in the cleaning unit 104, halogen impurities in the pyrolytic carbon containing halogen impurities are dissolved in the cleaning liquid under the action of the cleaning liquid, and then the cleaning liquid in which the halogen impurities are dissolved is discharged from the cleaning unit 104, so that the pyrolytic carbon containing no halogen can be obtained.
Referring to fig. 1 and 2, in some embodiments, the organic solid waste treatment system may further include a pulverizing unit 105, and in some embodiments, the pulverizing unit 105 may be connected to the acid gas reduction unit 103, and the pyrolytic carbon having absorbed halogen impurities in the volatile components in the acid gas reduction unit 103 is introduced into the pulverizing unit 105 to be pulverized, and then the pulverized pyrolytic carbon is introduced into the resource conversion unit 106 to be utilized. In some embodiments, the pulverization unit 105 may be further connected to the cleaning unit 104, and the halogen-free pyrolytic carbon obtained after cleaning by the cleaning unit 104 is introduced into the pulverization unit 105 for pulverization, and then the pulverized halogen-free pyrolytic carbon is introduced into the resource conversion unit 106 for utilization. In this embodiment, crushing unit 105 is for example the coal pulverizer, lets in the pyrolytic carbon grind smashing in the coal pulverizer, then adds the pyrolytic carbon after grinding smashing in the pulverized coal furnace, and the pyrolytic carbon after grinding smashing is favorable to the pyrolytic carbon to fully burn in the pulverized coal furnace, and in some embodiments, also can add pulverized coal and pyrolytic carbon together and grind smashing in the coal pulverizer, and pulverized coal after grinding smashing and pyrolytic carbon mixture add together in the pulverized coal furnace and burn for thermal power.
Referring to fig. 1, in some embodiments, the organic solid waste treatment system may further include a heat supply unit 102, and in some embodiments, the heat supply unit 102 may be connected to the pyrolysis reaction unit 101 and the acid gas abatement unit 103 to provide heat for decomposition of the organic solid waste in the pyrolysis reaction unit 101 and to provide heat for decomposition of tar in the volatile components in the acid gas abatement unit 103. In some embodiments, the heat supply unit 102 may also be connected to the resource conversion unit 106 at the same time, and waste heat generated in the resource conversion unit 106 is introduced into the heat supply unit 102, so as to realize recycling of heat in the organic solid waste treatment system, which is beneficial to saving energy. Specifically, in this embodiment, a first high-temperature flue gas 1100 generated in the pulverized coal furnace is sent to the heat supply unit 102 by, for example, a vortex fan, and heat is provided to the pyrolysis reaction unit 101 and the acid gas abatement unit 103 through the heat supply unit 102, more specifically, the high-temperature gas output by the heat supply unit 102 is divided into 3 streams, the first high-temperature gas stream 1200 is composed of the high-temperature flue gas from the pulverized coal furnace and the gas combustion gas stream 1400, and the second high-temperature gas stream 1300 and the third high-temperature gas stream 1500 are from the high-temperature flue gas from the pulverized coal furnace. Wherein first strand of high temperature air 1200 lets in pyrolysis reaction unit 101 inside with the organic solid waste contact wherein, right organic solid waste heats, and second strand of high temperature air 1300 is right the outer wall of pyrolysis reaction unit 101 heats, and third strand of high temperature air 1500 cuts down unit 103 heating for acid gas, provides the heat for tar decomposition wherein. In this embodiment, the heat provided to the pyrolysis reaction unit 101 and the acid gas abatement unit 103 includes 3 high-temperature gas flows, where the temperature of the 3 high-temperature gas flows is respectively 900-. The third high-temperature gas flow at 700-.
Referring to fig. 1 to 5, the present invention also provides a method for treating organic solid waste, which comprises the following steps:
s1, putting organic solid waste into a pyrolysis reaction unit 101, and carrying out pyrolysis reaction to obtain halogen-containing volatile 1600 and pyrolytic carbon;
s2, introducing the obtained halogen-containing volatile 1600 and the pyrolytic carbon into an acid gas reduction unit 103 to obtain a halogen-free combustible gas 1700 and the halogen-containing pyrolytic carbon;
s3, introducing the combustible gas 1700 without halogen into a resource conversion unit 106 for use;
s4, introducing the pyrolytic carbon containing the halogen into a cleaning unit 104 to obtain pyrolytic carbon containing no halogen;
s5, introducing the halogen-free pyrolytic carbon into the resource conversion unit 106 for use.
Referring to fig. 1 to 5, in step S1, in some embodiments, the organic solid waste is fed into a waste mixing unit 100, and is mixed by adding an alkaline oxide or an alkaline hydroxide, which may be in a powder form or a granule form, for example, one or more of CaO, MgO, CaOH, or MgOH. In the waste mixing unit 100, the organic solid waste is mixed with the basic oxide or the basic hydroxide with stirring, so that the organic solid waste is sufficiently mixed with the basic oxide or the basic hydroxide. In some embodiments, the organic solid waste mixed with the alkaline oxide or hydroxide may be fed to the pyrolysis reaction unit 101 through a material conveying device. In the present embodiment, the organic solid waste mixed with the basic oxide or the basic hydroxide is fed to the pyrolysis reaction unit 101 by using, for example, a screw feeder. In some embodiments, the pyrolysis reaction unit 101 may decompose the organic solid waste material by heating, so as to obtain a usable resource, and the operating temperature of the pyrolysis reaction unit 101 is, for example, 480-.
Referring to fig. 1 to 5, in step S2, step S3 and step S4, in some embodiments, the obtained halogen-containing volatile 1600 and the pyrolytic carbon are introduced into an acid gas abatement unit 103 to obtain a halogen-free combustible gas 1700 and a halogen-containing pyrolytic carbon, and the operating temperature of the acid gas abatement unit 103 is, for example, 600-. Specifically, the volatile matter 1600 containing halogen generated by the pyrolysis reaction unit 101 is sent to the acid gas reduction unit 103 through a heat preservation pipeline, for example, the pyrolytic carbon generated by the pyrolysis reaction unit 101 can be sent to the acid gas reduction unit 103 through a material conveying device, for example, the pyrolytic carbon is sent to the acid gas reduction unit 103 through a screw feeder or a belt conveying device from a first inlet 109, in the acid gas reduction unit 103, the alkaline oxide or the alkaline hydroxide absorbs halogen in the volatile matter and catalytically cracks all tar in the volatile matter to reform and upgrade, so as to obtain the combustible gas 1700 containing no halogen, and an insulating layer 107 may be further provided outside the acid gas reduction unit 103 to insulate the acid gas reduction unit 103. In the acid gas reduction unit 103, the pyrolytic carbon can also absorb halogen impurities in volatile matters, reform and upgrade the volatile matters, and is also beneficial to obtaining the halogen-free combustible gas 1700. The resource conversion unit 106 may be a high-temperature device, and converts and utilizes available resources obtained by decomposing the organic solid waste through the cooperative disposal of the resource conversion unit 106, and in this embodiment, in the resource conversion unit 106, the halogen-free combustible gas 1700 obtained through the acid gas reduction unit 103 is introduced into the resource conversion unit 106 to be converted and utilized. Specifically, in some embodiments, the resource conversion unit 106 may be, for example, a pulverized coal furnace, and the halogen-free combustible gas 1700 obtained by the acid gas reduction unit 103 is introduced into the pulverized coal furnace for combustion of pulverized coal in the pulverized coal furnace, so as to perform thermal power generation. In some embodiments, the pyrolytic carbon having absorbed the halogen impurities in the volatile components in the acid gas abatement unit 103 may be sent out from the first outlet 108, the pyrolytic carbon having absorbed the halogen impurities and the alkaline oxide or alkaline hydroxide are passed into the cleaning unit 104, and the cleaning unit 104 contains a cleaning solution for cleaning, in this embodiment, the cleaning solution may be one or more of tap water, purified water or distilled water, or other substances capable of dissolving the halogen therein, which is not specifically limited in this application. In the cleaning unit 104, the pyrolytic carbon containing halogen impurities dissolves the halogen impurities in the cleaning solution under the action of the cleaning solution, and then the cleaning solution in which the halogen impurities are dissolved is removed from the cleaning unit 104, so as to obtain the pyrolytic carbon containing no halogen, in some embodiments, a separation structure is provided in the cleaning unit 104, the separation structure is used for separating the pyrolytic carbon and washing the cleaning solution, in this embodiment, more than 90% of soluble halogen in the pyrolytic carbon is separated, and the separated salt-containing wastewater can be used for recycling of the cleaning unit 104 or for water for a flue gas purification system of a pulverized coal furnace after being treated. The halogen-free pyrolytic carbon is passed to the resource conversion unit 106 for utilization.
Referring to fig. 1 to 5, the present invention discloses an organic solid waste treatment system and a treatment method, the organic solid waste treatment system of the present invention can realize barrier-free cooperative treatment of organic solid waste in a resource conversion unit 106, such as a coal boiler, without affecting the life of the resource conversion unit 106, for example, without changing a flue gas purification system of a pulverized coal furnace, so as to reach the final pollutant emission standard, and has the advantages of low investment, low operation failure rate, and reliable cooperative treatment.
The above disclosure of selected embodiments of the invention is intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (10)
1. An organic solid waste treatment system, comprising:
a pyrolysis reaction unit;
an acid gas abatement unit connected to the pyrolysis reaction unit;
a resource conversion unit connected to the acid gas reduction unit;
and a cleaning unit, one end of which is connected with the acid gas reducing unit and the other end of which is connected with the resource converting unit.
2. The organic solid waste treatment system of claim 1, further comprising a pulverizing unit, wherein one end of the pulverizing unit is connected to the cleaning unit, and the other end of the pulverizing unit is connected to the resource converting unit.
3. The organic solid waste treatment system of claim 1, further comprising a waste mixing unit connected to the pyrolysis reaction unit.
4. The organic solid waste treatment system of claim 3, wherein the waste material in the waste mixing unit is conveyed into the pyrolysis reaction unit by a screw feeder.
5. The organic solid waste treatment system of claim 3, wherein the waste mixing unit comprises an alkaline oxide or hydroxide.
6. The organic solid waste treatment system of claim 1, wherein the pyrolysis reaction unit employs any one of a screw propulsion type reactor, a rotary type reactor, and a drop-down type reactor.
7. The organic solid waste treatment system of claim 1, further comprising a heat supply unit connected to the pyrolysis reaction unit and the acid gas abatement unit.
8. The organic solid waste treatment system of claim 7, wherein the heat supply unit is coupled to a resource conversion unit.
9. The organic solid waste treatment system of claim 1, wherein a portion of the high temperature flue gas in the heat supply unit is introduced into and contacts with an outer wall of the pyrolysis reaction unit, and a portion of the high temperature flue gas mixed gas generated by combustion of the high temperature flue gas in the heat supply unit is introduced into the pyrolysis reaction unit and contacts with the organic solid waste.
10. A method for treating organic solid waste, characterized in that it comprises at least the following steps:
putting the organic solid waste into a pyrolysis reaction unit, and carrying out thermal decomposition reaction to obtain halogen-containing volatile components and pyrolytic carbon;
introducing the obtained halogen-containing volatile matter and the pyrolytic carbon into an acid gas reduction unit to obtain halogen-free combustible gas and halogen-containing pyrolytic carbon;
introducing the combustible gas without halogen into a resource conversion unit for use;
introducing the pyrolytic carbon containing halogen into a cleaning unit to obtain pyrolytic carbon containing no halogen;
and introducing the halogen-free pyrolytic carbon into the resource conversion unit for use.
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