CN103672907A - Garbage treatment system and method - Google Patents
Garbage treatment system and method Download PDFInfo
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- CN103672907A CN103672907A CN201310421699.4A CN201310421699A CN103672907A CN 103672907 A CN103672907 A CN 103672907A CN 201310421699 A CN201310421699 A CN 201310421699A CN 103672907 A CN103672907 A CN 103672907A
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Abstract
The invention discloses a garbage treatment system and method. The garbage treatment system comprises pretreatment equipment, a pyrolyzation device, a purification device and an gas storage tank, wherein the pretreatment equipment conducts pretreatment on garbage so that pyrolyzation raw materials can be formed, the pyrolyzation device is connected with the pretreatment equipment and is used for receiving the pyrolyzation raw materials and decomposing the pyrolyzation raw materials into pyrolysis gas and garbage carbon, the purification device is connected with the pyrolyzation device and is used for receiving the pyrolysis gas and cooling and purifying the pyrolysis gas, the gas storage tank is connected with the purification device and is used for receiving the purified pyrolysis gas, and the gas storage tank is also connected with the pyrolyzation device to provide a gas source for the pyrolyzation device. According to the garbage treatment system, the garbage is decomposed into the pyrolysis gas and the garbage carbon, the pyrolysis gas of the garbage is used as fuel gas, as a result, the utilization rate of the pyrolysis products is improved, and the problems caused by pyrolytic oil treatment and operation are avoided; meanwhile, the operation cost of the garbage treatment system is reduced, energy consumption is low, and the recycling level is high.
Description
Technical field
The present invention relates to technology of garbage disposal field, especially relate to a kind of refuse disposal system and processing method thereof.
Background technology
Domestic rubbish disposal mode mainly comprises the methods such as sanitary landfills, burning, compost, pyrolysis and comprehensive garbage disposal, and China's garbage disposal at present still be take sanitary landfills as main, is aided with the modes such as waste incineration, compost.
Wherein, refuse pyrolysis technology refers to rubbish is heated under anaerobic or anaerobic condition, makes it to decompose, and in pyrolytic process, its intermediate product exists two kinds of variation tendencies: a kind of is to become micromolecular cracking process from large molecule.A kind of is that little molecule aggregation becomes more macromolecular polycondensation process.Along with pyrolysis temperature changes, rubbish experiences successively dry (normal temperature is raised to 200 ℃), destructive distillation (250 ℃～500 ℃) and gas generation phase (500 ℃～1200 ℃).At drying stage, first the moisture of the outside moisture in rubbish and capillary structure absorption be heated evaporation, and the constitution water in material is removed, and moisture is separated out and finished and material just enters the destructive distillation stage after reaching uniform temperature.Mainly there is the separating out of internal water and carbon dioxide, deoxidation, desulfurization etc. in the destructive distillation stage.When temperature raises again, the compound generating is above reacted by high temperature action generation second pyrolysis, generates second pyrolysis product.Second pyrolysis course of reaction mainly contains: 1. cracking 2. dehydrogenation 3. polycondensation 4. hydrogenation 5. bridged bond react the reaction that carbon and water occur for 6. heat.Its product gas just derives from fracture and the condensation of alkyl side chain in large molecule (CH3 ,-C2H5 ,-C3H7), oxygen-containing functional group (OH ,-O-CH3) and C-C key etc. as imflammable gas such as hydrogen, methane, carbon monoxide.
Thermal decomposition product mainly contains following several: 1. imflammable gas, comprise that some low-molecular-weight hydrocarbons are as hydrogen, methane, carbon monoxide etc., and can be used as low calorie fuels gas and use; 2. pyrolysis oil, a part of pyrolysis oil be can be used as fuel oil and is used by refining in theory; 3. rubbish charcoal: rubbish charcoal major part exists with carbon black form, can further process as energy applications, and this mixture comprises pure carbon, glass, native sand, metal etc.
But, because the composition of rubbish own is very complicated, contain the materials such as kitchen excess, plastics, waste battery, circuit board.Research finds that refuse pyrolysis oil is pitchy thickness waxy substance, under normal temperature, there is part to condense into piece, through further analyzing in known pyrolysis oil, have nearly hundreds of kind material, comprise organic acid, phenols, aldehydes, ketone etc., wherein chlorinity is generally higher, and content of beary metal is also higher.So viscosity is large, complicated component, and the oil product that calorific value is low, is difficult to carry out further separating-purifying and utilization.These pyrolysis oil flow out from reactor with high-temperature gas simultaneously, very easily even coking of condensation in pipeline, thereby blocking pipe, the normal operation that impact is produced.If being carried out to real industrialization, domestic garbage pyrolysis technology amplifies the just necessary problem that solves refuse pyrolysis oil.
Summary of the invention
The present invention is intended at least solve one of technical problem existing in prior art.
For this reason, one object of the present invention is to propose a kind of refuse disposal system of avoiding pyrolysis oil to process and operate the problem of bringing.
Another object of the present invention is to propose a kind of waste disposal method.
Refuse disposal system according to first aspect present invention embodiment, comprising: pre-processing device, and described pre-processing device carries out pretreatment to form pyrolysis feed to rubbish; Pyrolysis installation, described pyrolysis installation receives described pyrolysis feed and described pyrolysis feed is resolved into pyrolysis gas and garbage carbon, and described pyrolysis installation comprises: revolving bed pyrolysis oven, in described revolving bed pyrolysis oven, be provided with reaction chamber and be located at described reaction chamber bottom rotatable, for holding the dish that holds of pyrolysis feed, described reaction chamber is provided with discharging opening and unique gas outlet, described gas outlet be positioned at described reaction chamber top and near described discharging opening setting; The first heat storage type gas radiation pipe burner, described the first heat storage type gas radiation pipe burner extend in described reaction chamber and be positioned at described in hold dish top so that the pyrolysis feed holding on dish described in being contained in is heated; The second heat storage type gas radiation pipe burner, described the second heat storage type gas radiation pipe burner extend in described reaction chamber and be positioned at described in hold dish below so that the pyrolysis feed holding on dish described in being contained in is heated; Purifier, described purifier is connected to receive described pyrolysis gas and described pyrolysis gas is carried out to cooling and purifying with described pyrolysis installation; Air accumulator, described air accumulator is connected to receive the described pyrolysis gas through purifying with described purifier, and described air accumulator is connected to provide source of the gas to described pyrolysis installation with described pyrolysis installation.
According to the refuse disposal system of the embodiment of the present invention, by rubbish being carried out in pyrolysis installation to pyrolysis, garbage decomposition is become to pyrolysis gas and garbage carbon, avoid the problem that pyrolysis oil is processed and operation brings, and by adopting the pyrolysis gas of rubbish as fuel gas, improve the utilization rate of thermal decomposition product, reduce the operating cost of refuse disposal system simultaneously, energy consumption is low, and resource level is high.
Simultaneously by a unique gas outlet being located to the top of reaction chamber and arranging near discharging opening, the gaseous products that can guarantee pyrolysis has the sufficient time of staying in reaction chamber, make gaseous products fully carry out second pyrolysis, with by wherein can lime set body to be cracked into more micromolecular non-condensable gas be pyrolysis gas, improved the utilization rate of product, the problem of avoiding pyrolysis oil to process and operation is brought.Again due to by the first heat storage type gas radiation pipe burner and the second heat storage type gas radiation pipe burner are arranged in respectively to the space, both sides up and down that holds dish, not only can form the Double-side Heating to pyrolysis feed, to improve the thermal efficiency, increased the treating capacity of rubbish, increased the space of reaction chamber simultaneously, increase the time of staying of gaseous products in reaction chamber, further promote second pyrolysis, and owing to adopting the first heat storage type gas radiation pipe burner and the second heat storage type gas radiation pipe burner, air insulated in flue gas and reaction chamber, add the Seal Design of pyrolysis installation, guaranteed that pyrolysis carries out under the condition of anaerobic, improve the calorific value of pyrolysis gas, avoid burning simultaneously and bring the pollution problem of bioxin.
In addition, according to refuse disposal system of the present invention, also there is following additional technical feature:
According to some embodiments of the present invention, described pyrolysis installation also comprises: feeding structure, and described feeding structure is located at the front side of revolving bed pyrolysis oven to carry described pyrolysis feed in described reaction chamber; Discharging structure, described discharging structure is located at the rear side of described revolving bed pyrolysis oven to receive the described garbage carbon giving off from described reaction chamber.Thereby can improve the automaticity of pyrolysis installation.
Particularly, the pyrolysis feed in described revolving bed pyrolysis oven within first scheduled time along with preheating section, the first conversion zone and the second conversion zone are passed through in the rising of the temperature in described reaction chamber successively.
Particularly, the temperature range of described preheating section is 200-350 ℃, and the temperature range of described the first conversion zone is 350-500 ℃, and the temperature range of described the second conversion zone is 500-850 ℃.
Alternatively, described first scheduled time is 0.5-3h.
Particularly, described pyrolysis feed is 100-500mm at the described thickness holding on dish.
In some embodiments of the invention, described pre-processing device comprises fragmentation cell and garbage-molding unit, described garbage-molding unit is connected with described fragmentation cell, described fragmentation cell becomes graininess rubbish by the refuse breaking after natural-dehydration, and described garbage-molding unit is shaped to described pyrolysis feed by described graininess garbage-compressing.Thereby by rubbish being carried out to the pretreatment such as fragmentation, moulding, by the garbage-molding of dispersion, be bar-shaped, pie or granular pyrolysis feed, increase the bulk density of rubbish, be convenient to the charging of pyrolysis feed and be evenly laid in hold dish above, improved the disposal ability of rubbish.
Particularly, the granular size of described graininess rubbish is 10mm-80mm.
Particularly, the granular size of described pyrolysis feed is 10-100mm.
Waste disposal method according to second aspect present invention embodiment, comprises the steps: S1: rubbish is carried out to pretreatment to form pyrolysis feed; S2: described pyrolysis feed is sent in pyrolysis installation and carries out pyrolysis to resolve into pyrolysis gas and garbage carbon; S3: the described pyrolysis gas generating in recycling step S2; S4: purify described pyrolysis gas, and the pyrolysis gas after purifying is passed into the source of the gas of usining in the described pyrolysis installation in step S2 as described pyrolysis installation.
According to the waste disposal method of the embodiment of the present invention, by rubbish being carried out in pyrolysis installation to pyrolysis to resolve into pyrolysis gas and garbage carbon, and this pyrolysis gas is through being passed into the source of the gas of usining in pyrolysis installation as pyrolysis installation after purifying, thereby not only improve the utilization rate of thermal decomposition product, and the problem of having avoided pyrolysis oil to process and operation is brought.
Particularly, the described preprocessing process of step S1 comprises the steps: S11: described rubbish is poured in dump pit and by described rubbish and in described dump pit, stopped for second scheduled time so that described rubbish is dewatered; S12: the described refuse breaking after dehydration is become to graininess rubbish; S13: the described graininess garbage-compressing in step S12 is molded into described pyrolysis feed.Thereby by rubbish being carried out to the pretreatment such as fragmentation, moulding, by the garbage-molding of dispersion, be bar-shaped, pie or granular pyrolysis feed, increased the bulk density of rubbish, be convenient to the charging of pyrolysis feed and even stone, improved the disposal ability of rubbish.
Additional aspect of the present invention and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage accompanying drawing below combination obviously and is easily understood becoming the description of embodiment, wherein:
Fig. 1 is according to the schematic diagram of the refuse disposal system of the embodiment of the present invention;
Fig. 2 is according to the schematic diagram of the pyrolysis installation in the refuse disposal system of the embodiment of the present invention;
Fig. 3 is according to the flow chart of the waste disposal method of the embodiment of the present invention.
Reference numeral:
The specific embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Below by the embodiment being described with reference to the drawings, be exemplary, only for explaining the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention, it will be appreciated that, term " " center ", " longitudinally ", " laterally ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", orientation or the position relationship of indications such as " outward " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as limitation of the present invention.In addition, term " first ", " second " be only for describing object, and can not be interpreted as indication or hint relative importance.
In description of the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be to be also electrically connected to; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can concrete condition understand above-mentioned term concrete meaning in the present invention.
Below with reference to Fig. 1 and Fig. 2, describe according to a kind of refuse disposal system 100 of first aspect present invention embodiment, this refuse disposal system 100 can be used for disposal of refuse, especially organic solid waste.
Wherein, the first heat storage type gas radiation pipe burner 21 and the second heat storage type gas radiation pipe burner 22 comprise respectively radiant tube and are located at the heat-storage type burner in radiant tube, flue gas in the radiant tube of the first heat storage type gas radiation pipe burner 21 and the second heat storage type gas radiation pipe burner 22 and the air insulated in reaction chamber 201, the first heat storage type gas radiation pipe burner 21 and the second heat storage type gas radiation pipe burner 22 carry out preheating by heat-storage type burner to combustion gas in radiant tube (air) respectively, and make combustion gas in radiant tube, carry out efficient burning, in thermal-radiating mode, provide pyrolysis feed pyrolysis needed heat.In other words, the heat providing by the first heat storage type gas radiation pipe burner 21 and the second heat storage type gas radiation pipe burner 22 raises the temperature in reaction chamber 201 gradually, so that pyrolysis feed is carried out to pyrolysis.The thermal efficiency of the first heat storage type gas radiation pipe burner 21 and the second heat storage type gas radiation pipe burner 22 can reach more than 85%, and can the low-calorie combustion gas of smooth combustion.What deserves to be explained is, the operation principle of the first heat storage type gas radiation pipe burner 21 and the second heat storage type gas radiation pipe burner 22 is known by those skilled in the art, is not just described in detail here.
Particularly, when 100 pairs of rubbish of refuse disposal system are processed, first 1 pair of rubbish of pre-processing device carries out pretreatment to form pyrolysis feed, then pyrolysis feed is transported to and in pyrolysis installation 2, carries out pyrolysis, now when holding dish and carry pyrolysis feed on 202, owing to holding, dish 202 is rotatable, pyrolysis feed can be laid in uniformly and hold on dish 202, the heat that the first heat storage type gas radiation pipe burner 21 and the second heat storage type gas radiation pipe burner 22 provide raises the temperature in reaction chamber 201 gradually, pyrolysis feed generates and has gaseous products and garbage carbon in the interior pyrolysis of reaction chamber 201, gaseous products is risen to the upper space of reaction chamber 201 gradually by the surface that is laid in the pyrolysis feed that holds dish 202, in the process rising at gaseous products, gaseous products is the first heat storage type gas radiation pipe burner 21 higher than reaction chamber 201 temperature by temperature, the temperature of gaseous products raises again, make gaseous products second pyrolysis for more micromolecular pyrolysis gas, last pyrolysis gas is discharged from the gas outlet at the top of reaction chamber 201.
The pyrolysis gas of discharging from pyrolysis installation 2 is drained in purifier 3 and carries out being stored in air accumulator 4 cooling and purifying, and the pyrolysis gas in air accumulator 4 can be passed into the source of the gas of usining in pyrolysis installation 2 as pyrolysis installation 2.At the pyrolysis gas that pyrolysis installation 2 is discharged, collect purifier 3 when interior, simultaneously to the garbage carbon of discharging from pyrolysis installation 2 carry out quenching cooling collection.In other words, refuse disposal system 100 needs outside the source of the gas of outside combustion gas as pyrolysis installation 2 when starting, and in the process of refuse disposal system 100 operations, adopts the pyrolysis gas of refuse pyrolysis generation as the source of the gas of pyrolysis installation 2.Wherein, purifier 3 can be any structure, as long as can carry out cooling and purifying as decoking, desulfurization, out of stock etc. to pyrolysis gas.
According to the refuse disposal system 100 of the embodiment of the present invention, by rubbish being carried out in pyrolysis installation 2 to pyrolysis, garbage decomposition is become to pyrolysis gas and garbage carbon, and by adopting the pyrolysis gas of rubbish as fuel gas, not only can improve the utilization rate of thermal decomposition product, and avoid the problem that pyrolysis oil is processed and operation brings, reduce the operating cost of refuse disposal system 100 simultaneously, energy consumption is low, and resource level is high.
Simultaneously by a gas outlet being located to the top of reaction chamber 201 and arranging near discharging opening, can guarantee that the gaseous products of pyrolysis is through the first heat storage type gas radiation pipe burner 21, thereby the gaseous products that can guarantee pyrolysis has the sufficient time of staying in reaction chamber 201, make gaseous products fully carry out second pyrolysis, with by wherein can lime set body to be cracked into more micromolecular non-condensable gas be pyrolysis gas, improved the utilization rate of product, the problem of avoiding pyrolysis oil to process and operation is brought.Again due to by the first heat storage type gas radiation pipe burner 21 and the second heat storage type gas radiation pipe burner 22 being arranged in respectively to the space, both sides up and down that holds dish 202, not only can form the Double-side Heating to pyrolysis feed, to improve the thermal efficiency, increased the treating capacity of rubbish, increased the space of reaction chamber 201 simultaneously, increase the time of staying of gaseous products in reaction chamber 201, further promote second pyrolysis, and owing to adopting the first heat storage type gas radiation pipe burner 21 and the second heat storage type gas radiation pipe burner 22, air insulated in flue gas and reaction chamber 201, add the Seal Design of pyrolysis installation 2, guaranteed that pyrolysis carries out under the condition of anaerobic, improve the calorific value of pyrolysis gas, avoid burning simultaneously and bring the pollution problem of bioxin.
In some embodiments of the invention, can be by increasing the space of the reaction chamber 201 in revolving bed pyrolysis oven 20, further increase the time of staying of gaseous products in reaction chamber 201, further promote second pyrolysis, and for example by expansion, hold the diameter of dish 202 by expanding the space of reaction chamber 201, can realize large-scale production, high energy is realized the garbage disposal scale of 1,000,000 t/.
In specific embodiments of the invention, the pyrolysis feed in revolving bed pyrolysis oven 20 within first scheduled time along with preheating section, the first conversion zone and the second conversion zone are passed through in the rising of the temperature in reaction chamber 201 successively.In other words, within first scheduled time, the heat providing along with the first heat storage type gas radiation pipe burner 21 and the second heat storage type gas radiation pipe burner 22, temperature in reaction chamber can be divided into three sections, the pyrolysis feed holding on dish is passed through preheating section successively, the first conversion zone and the second conversion zone, wherein the temperature range of preheating section is 200-350 ℃, the temperature range of the first conversion zone is 350-500 ℃, the temperature range of the second conversion zone is 500-850 ℃, now by reaction temperature being divided into three sections, can control the dry of pyrolysis feed by controlling the temperature of different sections and the time of staying of pyrolysis feed, destructive distillation and second pyrolysis course of reaction, final pyrolysis feed is decomposed into pyrolysis gas and garbage carbon, reach the maximization of energy utilization rate.Alternatively, this first scheduled time is 0.5-3h.
According to some embodiments of the present invention, pyrolysis installation 2 also comprises: feeding structure 5 and discharging structure 6, wherein, the front side that feeding structure 5 is located at revolving bed pyrolysis oven 20 is with to the interior conveying pyrolysis feed of reaction chamber 201.The garbage carbon that the rear side that discharging structure 6 is located at revolving bed pyrolysis oven 20 gives off to receive reaction chamber 201.Thereby can improve the automaticity of pyrolysis installation 2.Wherein, between feeding structure 5 and revolving bed pyrolysis oven 20, adopt two-stage lock hopper valve arrangement, thereby can guarantee the sealing in reaction chamber 201, effectively prevent the leakage of air and pyrolysis gas.Further, the contiguous discharging structure 6 in gas outlet arranges.Thereby can further make gaseous products in the interior abundant stop of reaction chamber 201, further guarantee fully carrying out of second pyrolysis reaction.
In some embodiments of the invention, as shown in Figure 1, pre-processing device 1 comprises fragmentation cell 10 and garbage-molding unit 11, garbage-molding unit 11 is connected with fragmentation cell 10, fragmentation cell 10 becomes graininess rubbish by the refuse breaking after natural-dehydration, and garbage-molding unit 11 is shaped to pyrolysis feed by graininess garbage-compressing.Particularly, the granular size of graininess rubbish is 10mm-80mm, and the granular size of pyrolysis feed is 10-100mm.Wherein, rubbish stops 1-7 days to carry out natural-dehydration in dump pit.Thereby by rubbish being carried out to the pretreatment such as fragmentation, moulding, by the garbage-molding of dispersion, be bar-shaped, pie or granular pyrolysis feed, increase the bulk density of rubbish, be convenient to the charging of pyrolysis feed and be evenly laid in hold on dish 202, improved the disposal ability of rubbish.
As shown in Figure 1, in some embodiments of the invention, refuse disposal system 100 also comprises press device 7, and press device 7 is connected with pyrolysis installation 2 with air accumulator 4 respectively.Thereby the pressure of adjustable and stable refuse disposal system 100 (gas burning system), and can control the gas flow of air accumulator 4, protection air accumulator 4 is in order to avoid outlet pressure is too high or too low.Further, refuse disposal system 100 also comprises the making-up air device 8 that fills combustion gas, and making-up air device 8 is connected with pyrolysis installation 2, thereby can be at pyrolysis gas inadequate or afterburning combustion gas is provided when unstable, guarantees that refuse disposal system 100 can be stablized, continuous work.
Below with reference to Fig. 1-Fig. 3, describe according to a kind of waste disposal method of second aspect present invention embodiment.
According to the waste disposal method of the embodiment of the present invention, as shown in Figure 3, comprise the steps:
S1: rubbish is carried out to pretreatment to form pyrolysis feed.
S2: pyrolysis feed is sent in pyrolysis installation 2 and carries out pyrolysis to resolve into pyrolysis gas and garbage carbon.
S3: the pyrolysis gas generating in recycling step S2.
S4: purify pyrolysis gas, and the pyrolysis gas after purifying is passed into the source of the gas of usining in the pyrolysis installation 2 in step S2 as pyrolysis installation 2.
Particularly, first rubbish is carried out to pretreatment to form pyrolysis feed, then pyrolysis feed is sent in pyrolysis installation 2 and carries out pyrolysis to resolve into pyrolysis gas and garbage carbon, the pyrolysis gas that recovery is discharged from pyrolysis installation 2 also carries out purified treatment to this pyrolysis gas, pyrolysis gas after purified treatment is passed into the source of the gas of usining in pyrolysis installation 2 as pyrolysis installation 2, in other words, this waste disposal method, except when the virgin work, need to be to the outside combustion gas of the interior infeed of pyrolysis installation 2, in remaining running, adopt the pyrolysis gas of refuse pyrolysis generation as the source of the gas of pyrolysis installation 2.
According to the waste disposal method of the embodiment of the present invention, by rubbish being carried out in pyrolysis installation 2 to pyrolysis to resolve into pyrolysis gas and garbage carbon, and this pyrolysis gas is usingd as the source of the gas of pyrolysis installation 2 in being passed into pyrolysis installation 2 after purifying, thereby not only improve the utilization rate of thermal decomposition product, and the problem of having avoided pyrolysis oil to process and operation is brought.
Further, the preprocessing process of step S1 comprises the steps:
S11: rubbish is poured in dump pit and by rubbish and stopped for second scheduled time so that rubbish is dewatered in dump pit.Particularly, this second scheduled time is 1-7 days.
S12: the refuse breaking after dehydration is become to graininess rubbish.
S13: the graininess garbage-compressing in step S12 is molded into pyrolysis feed.
Particularly, first rubbish is poured in dump pit, rubbish stopped for second scheduled time in dump pit, to guarantee the natural-dehydration of rubbish, then the refuse breaking after dehydration was become to graininess rubbish, finally graininess garbage-compressing was molded into pyrolysis feed.Thereby by rubbish being carried out to the pretreatment such as fragmentation, moulding, by the garbage-molding of dispersion, be bar-shaped, pie or granular pyrolysis feed, increased the bulk density of rubbish, be convenient to the charging of pyrolysis feed and even stone, improved the disposal ability of rubbish.
Below with reference to Fig. 1-Fig. 3, the waste disposal method of refuse disposal system 100 is according to the preferred embodiment of the invention described.
First, special-purpose refuse truck weighs and by discharging platform, rubbish is poured in dump pit through weighbridge, rubbish stops 1-7 to guarantee abundant dehydration and the mixing of rubbish in dump pit, and the moisture content of rubbish rubbish after diafiltration is lower than 30%, isolated sewage qualified discharge after sewage disposal.
Then, the rubbish in dump pit is delivered on ribbon conveyer by grab bucket, ribbon conveyer is transported to fragmentation cell 10 by rubbish, and through 2-3 level breaker, it is the graininess rubbish of 10mm-80mm that refuse breaking is become to particle diameter.Then, graininess rubbish is become to bar-shaped, pie or pyrolysis feed granular and that granular size is 10mm-100mm through 11 compression formings of garbage-molding unit.
By the pyrolysis feed of moulding by Belt Conveying to feeding structure 5, feeding structure 5 is delivered to revolving bed pyrolysis oven 20 by rubbish, holds dish 202 in reaction chamber 201 bottoms rotations, thereby pyrolysis feed is laid in equably, holds on dish 202.The first heat storage type gas radiation pipe burner 21 and the second heat storage type gas radiation pipe burner 22 provide the interior pyrolysis feed pyrolysis of reaction chamber 201 needed heat in thermal-radiating mode respectively, in the process of heating, pyrolysis feed generates and has gaseous products and garbage carbon in the interior pyrolysis of reaction chamber 201, gaseous products is risen to the upper space of reaction chamber 201 gradually by the surface that is laid in the pyrolysis feed that holds dish 202, in the process rising at gaseous products, gaseous products is the first heat storage type gas radiation pipe burner 21 higher than reaction chamber 201 temperature by temperature, the temperature of gaseous products raises again, make gaseous products second pyrolysis for more micromolecular pyrolysis gas, last pyrolysis gas is discharged from the gas outlet at the top of reaction chamber 201.Pyrolysis gas is stored in air accumulator 4 after cooling and purifying (decoking, desulfurization, out of stock), and the pyrolysis gas in air accumulator 4 can all or part of fuel as pyrolysis installation 2, and wherein the pyrolysis gas of the remainder in air accumulator 4 also can be used as fuel gas and sells.Garbage carbon is discharged and can carry out to garbage carbon quenching and collect after cooling through discharging structure 6.
In the description of this description, the description of reference term " embodiment ", " some embodiment ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or feature can be with suitable mode combinations in any one or more embodiment or example.
Although illustrated and described embodiments of the invention, those having ordinary skill in the art will appreciate that: in the situation that not departing from principle of the present invention and aim, can carry out multiple variation, modification, replacement and modification to these embodiment, scope of the present invention is limited by claim and equivalent thereof.
Claims (11)
1. a refuse disposal system, is characterized in that, comprising:
Pre-processing device, described pre-processing device carries out pretreatment to form pyrolysis feed to rubbish;
Pyrolysis installation, described pyrolysis installation receives described pyrolysis feed and described pyrolysis feed is resolved into pyrolysis gas and garbage carbon, and described pyrolysis installation comprises:
Revolving bed pyrolysis oven, in described revolving bed pyrolysis oven, be provided with reaction chamber and be located at described reaction chamber bottom rotatable, for holding the dish that holds of pyrolysis feed, described reaction chamber is provided with discharging opening and unique gas outlet, described unique gas outlet be positioned at described reaction chamber top and near described discharging opening setting;
The first heat storage type gas radiation pipe burner, described the first heat storage type gas radiation pipe burner extend in described reaction chamber and be positioned at described in hold dish top so that the pyrolysis feed holding on dish described in being contained in is heated;
The second heat storage type gas radiation pipe burner, described the second heat storage type gas radiation pipe burner extend in described reaction chamber and be positioned at described in hold dish below so that the pyrolysis feed holding on dish described in being contained in is heated;
Purifier, described purifier is connected to receive described pyrolysis gas and described pyrolysis gas is carried out to cooling and purifying with described pyrolysis installation;
Air accumulator, described air accumulator is connected to receive the described pyrolysis gas through purifying with described purifier, and described air accumulator is connected to provide source of the gas to described pyrolysis installation with described pyrolysis installation.
2. refuse disposal system according to claim 1, is characterized in that, also comprises:
Feeding structure, described feeding structure is located at the front side of revolving bed pyrolysis oven to carry described pyrolysis feed in described reaction chamber;
Discharging structure, described discharging structure is located at the rear side of described revolving bed pyrolysis oven to receive the described garbage carbon giving off from described reaction chamber.
3. refuse disposal system according to claim 1, is characterized in that, the pyrolysis feed in described revolving bed pyrolysis oven within first scheduled time along with preheating section, the first conversion zone and the second conversion zone are passed through in the rising of the temperature in described reaction chamber successively.
4. refuse disposal system according to claim 3, is characterized in that, the temperature range of described preheating section is 200-350 ℃, and the temperature range of described the first conversion zone is 350-500 ℃, and the temperature range of described the second conversion zone is 500-850 ℃.
5. refuse disposal system according to claim 3, is characterized in that, described first scheduled time is 0.5-3h.
6. refuse disposal system according to claim 1, is characterized in that, described pyrolysis feed is 100-500mm at the described thickness holding on dish.
7. refuse disposal system according to claim 1, it is characterized in that, described pre-processing device comprises fragmentation cell and garbage-molding unit, described garbage-molding unit is connected with described fragmentation cell, described fragmentation cell becomes graininess rubbish by the refuse breaking after natural-dehydration, and described garbage-molding unit is shaped to described pyrolysis feed by described graininess garbage-compressing.
8. refuse disposal system according to claim 7, is characterized in that, the granular size of described graininess rubbish is 10mm-80mm.
9. refuse disposal system according to claim 8, is characterized in that, the granular size of described pyrolysis feed is 10-100mm.
10. a waste disposal method, is characterized in that, comprises the steps:
S1: rubbish is carried out to pretreatment to form pyrolysis feed;
S2: described pyrolysis feed is sent in pyrolysis installation and carries out pyrolysis to resolve into pyrolysis gas and garbage carbon;
S3: the described pyrolysis gas generating in recycling step S2;
S4: purify described pyrolysis gas, and the pyrolysis gas after purifying is passed into the source of the gas of usining in the described pyrolysis installation in step S2 as described pyrolysis installation.
11. waste disposal methods according to claim 10, is characterized in that, the described preprocessing process of step S1 comprises the steps:
S11: described rubbish is poured in dump pit and by described rubbish and stopped for second scheduled time so that described rubbish is dewatered in described dump pit;
S12: the described refuse breaking after dehydration is become to graininess rubbish;
S13: the described graininess garbage-compressing in step S12 is molded into described pyrolysis feed.
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