CN205635472U - Organic garbage pyrolytic system - Google Patents
Organic garbage pyrolytic system Download PDFInfo
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- CN205635472U CN205635472U CN201620160678.0U CN201620160678U CN205635472U CN 205635472 U CN205635472 U CN 205635472U CN 201620160678 U CN201620160678 U CN 201620160678U CN 205635472 U CN205635472 U CN 205635472U
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Abstract
The utility model discloses an organic garbage pyrolytic system. This organic garbage pyrolytic system includes: sieve separator, screw feeding ware, dry tower, the cyclone of promoting to and the pyrolytic reaction ware, wherein, the sieve separator the screw feeding ware dry promotion tower a cyclone with the consecutive expert of pyrolytic reaction ware. This system can effectively suppress two secondary responses of oil gas, improves tar yield to adopted the heat accumulation formula not have the heat carrier radiant tube and utilized next door heat transfer heating, need not gas, solid heat carrier, improved the calorific value of pyrolysis gas, but this organic garbage pyrolytic system modularization combination simultaneously is applicable to different garbage treatment amount, easily industrialization.
Description
Technical field
This utility model relates to organic refuse pyrolysis system.
Background technology
Along with the acceleration of China's modernization, domestic waste has become as the key factor that restriction green city is fast-developing.At present, treatment of urban garbage mode in countries in the world mainly includes sanitary landfills, burning, compost, pyrolysis and comprehensive garbage disposal etc..And the relevant refuse classification of China, rubbish comprehensive utilization technique are delayed, the main processing ways of current rubbish be sanitary landfills be main, the mode such as burning, compost is auxiliary.Further, along with scientific and technological progress and the enhancing of environmental consciousness, destruction and threat the healthy more and more recognized of the mankind that " burning method " and " landfill method " brings to environment arrive.A kind of novel technology to substitute " burning method " and " landfill method ", with reduce greenhouse gas emission and eliminate two English pollution problems, just by the urgent need to.
Refuse pyrolysis treatment technology refer to by rubbish when anaerobic or heating when anoxia, be allowed to decompose.In pyrolytic process, its intermediate product trends towards the change that polarises: a kind of be from macromolecular cleavage be the cracking process of little molecule, another kind be little molecule aggregation be the polycondensation process of macromole.Along with the rising of pyrolysis temperature, refuse pyrolysis mainly experiences dry (room temperature～200 DEG C), dry distilling (～500 DEG C) and gas and generates (～1200 DEG C) three phases.In the cold drying stage, the moisture of outer water contained in rubbish and capillary structure absorption is initially heated evaporation, secondly the constitution water decomposes in material.Along with evaporation and the rising of pyrogenation and carbonization temperature of moisture, refuse pyrolysis enters the dry distilling stage.As long as there is internal water and CO in the dry distilling stage2Precipitation, deoxidation, the reaction such as desulfurization.Along with the continuation of temperature raises, the small-molecule substance generation second pyrolysis that the dry distilling stage produces, refuse pyrolysis enters gas generation phase, generates second pyrolysis product.Secondary response mainly has cracking, dehydrogenation, polycondensation, hydrogenation, bridged bond reaction, water carbon reaction etc..Second pyrolysis reaction primary product includes: H2、CH4With CO etc..
Due to China's Waste sorting method imperfection, cause rubbish composition complex own, often containing kitchen excess, plastics, old and useless battery, circuit board etc..Find the tar ingredients also complex that refuse pyrolysis produces simultaneously, component analysis finds in tar containing material in hundreds of, including various organic acid, phenols, ketone, aldehydes, PAHs etc., wherein chlorine element and heavy metal element are the most higher, water content about 20%, calorific value about 13～18MJ/Kg, causes stench because sulfide content is high simultaneously, and comprehensive utilization difficulty is big.Factors causes China's refuse pyrolysis, rubbish comprehensive utilization technique to be difficult to obtain important breakthrough.
Utility model content
This utility model is intended at least to solve one of technical problem present in prior art.For this, a purpose of the present utility model is to propose a kind of organic waste pyrolysis system, this organic waste pyrolysis system can effectively suppress the secondary response of oil gas, improve tar yield, and have employed heat accumulating type without heat carrier radial canal heating technique, it is not necessary to gas, solid heat carrier, improve the calorific value of pyrolysis gas, simultaneously this organic waste pyrolysis system can modular combination, be suitable for different garbage treatment quantities, it is easy to industrialization.
According to an aspect of the present utility model, this utility model provides a kind of organic waste pyrolysis system.According to embodiment of the present utility model, this system includes: screening machine, feeding screw, dry lifting tower, first cyclone separator, and pyrolysis reactor, wherein, described screening machine, described feeding screw, described dry lifting tower, described first cyclone separator and described pyrolysis reactor are sequentially connected logical, and wherein, described pyrolysis reactor includes: pyrolysis garbage inlet and semicoke outlet；Described pyrolysis garbage inlet is positioned at the top of described pyrolysis reactor, and is connected with the outlet of described solid refuse；The outlet of described semicoke is positioned at the bottom of described pyrolysis reactor；Heat accumulation type radiant tube, described heat accumulation type radiant tube in the inside of described pyrolysis reactor along the short transverse multi-tier arrangement of described pyrolysis reactor, every layer has many heat accumulation type radiant tubes the most parallel to each other, and the exhanst gas outlet on described heat accumulation type radiant tube is connected with the smoke inlet of described dry lifting tower；Oil gas derives pipeline, and described oil gas is derived and is provided with through hole on the tube wall of pipeline；Discharge, described discharge includes gas gathering manifold and the gas-collecting branch pipe being connected with described gas gathering manifold, wherein, described gas gathering manifold is vertically situated at outside described pyrolysis reactor, and described gas-collecting branch pipe extends through in the sidewall of described pyrolysis reactor extend into described pyrolysis reactor and derives pipeline with described oil gas and is connected.
Organic waste pyrolysis system according to this utility model embodiment can effectively suppress the secondary response of oil gas, improve tar yield, and have employed heat accumulating type utilizes septate heat transfer to heat without heat carrier radial canal, without gas, solid heat carrier, improve the calorific value of pyrolysis gas, this organic waste pyrolysis system can modular combination simultaneously, it is adaptable to different garbage treatment quantities, it is easy to industrialization.
Optionally, described gas-collecting branch pipe is multiple to utility model, and arranged parallel to each other along the length direction of described gas gathering manifold.
Optionally, described gas-collecting branch pipe is perpendicular to described gas gathering manifold.
Optionally, described oil gas derives the pipeline short transverse multi-tier arrangement along described reactor, and every layer has many oil gas the most parallel to each other and derives pipeline.
Optionally, described oil gas is derived pipeline and is arranged in parallel with described heat accumulation type radiant tube, and the respective left and right sides of described heat accumulation type radiant tube is symmetrically arranged with two oil gas and derives pipeline.
Optionally, the spacing of the tube wall that described oil gas derives pipeline and neighbouring described heat accumulation type radiant tube be that described oil gas derives pipe diameter d 1/2-3 times.
Optionally, described oil gas is derived and is provided with multiple through hole on the tube wall of pipeline, it is preferable that described through hole is derived at described oil gas and is uniformly distributed on the length direction of pipeline.
Optionally, oil gas described in same layer is derived pipeline and is communicated to same described gas-collecting branch pipe.
Optionally, this system farther includes: the second cyclone separator, and described second cyclone separator has pyrolysis oil gas mixture entrance, purifies oil gas vent and solid particle outlet, and described pyrolysis oil gas mixture entrance is connected with described gas gathering manifold.
Optionally, described system farther includes: spiral discharging device, and described spiral discharging device has semicoke entrance and semicoke mixture outlet, and described semicoke entrance is connected with the outlet of described semicoke.
Optionally, described system farther includes: spray column, and described spray column has purification oil gas entrance, tar outlet and combustible gas outlet, and described purification oil gas entrance is connected with described purification oil gas vent.
Optionally, described system farther includes: combustion gas air-introduced machine, and described combustion gas air-introduced machine has fuel gas inlet and gas outlet, and described fuel gas inlet is connected with the outlet of described combustible gas；Fuel cartridge, described fuel cartridge has storage tank fuel gas inlet and storage tank gas outlet, and described storage tank fuel gas inlet is connected with described gas outlet.
Optionally, this system farther includes: combination drying machine, and described combination drying facility have semicoke entrance, coal entrance, limestone entrance and mixed material outlet, and described semicoke entrance is connected with described semicoke mixture outlet；Disintegrating machine, described disintegrating machine has mixed material entrance and broken material outlet, and described mixed material entrance is connected with the outlet of described mixed material；And melting furnace, described melting furnace has gasification and melting material inlet, gasifying medium entrance, gasification gas outlet and slag-drip opening, described gasification and melting material inlet is connected with the outlet of described broken material, and described gasifying medium entrance is connected with the outlet of described percolate.
Additional aspect of the present utility model and advantage will part be given in the following description, and part will become apparent from the description below, or is recognized by practice of the present utility model.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present utility model and advantage will be apparent from easy to understand, wherein from combining the accompanying drawings below description to embodiment:
Fig. 1 shows the structural representation of the organic waste pyrolysis system according to one embodiment of this utility model；
Fig. 2 shows the structural representation of the organic waste pyrolysis system according to one embodiment of this utility model；
Fig. 3 shows the structural representation of the organic waste pyrolysis system according to one embodiment of this utility model；
Fig. 4 shows the structural representation of the organic waste pyrolysis system according to one embodiment of this utility model；
Fig. 5 shows the structural representation of the organic waste pyrolysis system according to one embodiment of this utility model；
Fig. 6 shows the structural representation of the organic waste pyrolysis system according to one embodiment of this utility model；
Fig. 7 shows the schematic flow sheet of the method utilizing organic waste pyrolysis system process organic waste according to one embodiment of this utility model；
Fig. 8 shows the schematic flow sheet of the method utilizing organic waste pyrolysis system process organic waste according to one embodiment of this utility model；
Fig. 9 shows the schematic flow sheet of the method utilizing organic waste pyrolysis system process organic waste according to one embodiment of this utility model.
Detailed description of the invention
Of the present utility model embodiment is described below in detail, and the example of described embodiment is shown in the drawings, and the most same or similar label represents same or similar element or has the element of same or like function.The embodiment described below with reference to accompanying drawing is exemplary, is only used for explaining this utility model, and it is not intended that to restriction of the present utility model.
In description of the present utility model, term " longitudinally ", " laterally ", " on ", D score, "front", "rear", "left", "right", " vertically ", " level ", " top ", the orientation of the instruction such as " end " or position relationship be based on orientation shown in the drawings or position relationship, it is for only for ease of description this utility model rather than requires that this utility model must be with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.
It should be noted that term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or implicitly include one or more this feature.Further, in description of the present utility model, except as otherwise noted, " multiple " are meant that two or more.
According to an aspect of the present utility model, this utility model provides a kind of organic waste pyrolysis system.With reference to Fig. 1, according to embodiment of the present utility model, this system is explained, this system includes screening machine 100, feeding screw 200, is dried lifting tower 300, first cyclone separator 400, and pyrolysis reactor 500, wherein, screening machine 100 has garbage inlet, percolate outlet, organic waste outlet and inorganic refuse outlet；Feeding screw 200 has charging aperture and discharging opening, and wherein, charging aperture exports with the organic waste of screening machine 100 and is connected；Being dried lifting tower 300 and have smoke inlet, organic waste entrance and the outlet of dry mixed material, wherein, organic waste entrance is connected with the discharging opening of feeding screw 200；First cyclone separator 400 has dry mixed material entrance, exhanst gas outlet and solid refuse outlet, and wherein, dry mixed material entrance exports with the dry mixed material of dry lifting tower 300 and is connected；Pyrolysis reactor 500 has pyrolysis garbage inlet 512 and semicoke outlet 511, and wherein, pyrolysis garbage inlet 512 exports with the solid refuse of the first cyclone separator 400 and is connected.
Further, for the ease of understanding the structure of pyrolysis reactor, according to embodiment of the present utility model, explaining the structure of pyrolysis reactor, this pyrolysis reactor 500 may include that
Pyrolysis garbage inlet 512 and semicoke outlet 511, wherein, pyrolysis garbage inlet 512 is positioned at the top of pyrolysis reactor, and is connected with solid refuse outlet, and semicoke outlet 511 is positioned at the bottom of pyrolysis reactor.In embodiments more of the present utility model, it is understood that, this pyrolysis reactor 500 has housing 510, pyrolytic reaction space is limited in this housing 510, pyrolysis garbage inlet 512 and semicoke outlet 511 are arranged on housing 510, and wherein, pyrolysis garbage inlet 512 is positioned at the top of housing 510, and be connected with solid refuse outlet, semicoke outlet 511 is positioned at the bottom of housing 510.Thus, pyrolysis garbage inlet is positioned at the top of pyrolysis reactor, it is simple to rubbish enters from the one end in pyrolytic reaction space, and the other end is discharged, and is fully pyrolyzed, and semicoke outlet is positioned at the bottom of housing, it is simple to semicoke is discharged.According to embodiments more of the present utility model, housing 510 is additionally provided with fuel gas entrance 513 and air intake 514.
Heat accumulation type radiant tube 520, it is also referred to as " radial canal " in this article, this heat accumulation type radiant tube 520 in the inside of pyrolysis reactor along the short transverse multi-tier arrangement of described pyrolysis reactor, it can be appreciated that heat accumulation type radiant tube 520 is in housing 510 or the inside in pyrolytic reaction space, and along the short transverse multi-tier arrangement in housing 510 or pyrolytic reaction space, every layer has many heat accumulation type radiant tubes 510 the most parallel to each other, and the exhanst gas outlet 515 on this heat accumulation type radiant tube 510 is connected with the smoke inlet of dry lifting tower 300.Thus, using radial canal to have heat storage, will enter fuel and the air preheat of combustor, reduce exhaust gas temperature, the thermal efficiency is high, and, use septate heat transfer technique, the component of rubbish is changed insensitive, makes this pyrolysis reactor be suitable to the pyrolysis of various garbage.
Oil gas derives pipeline 530, and oil gas is derived and is provided with through hole on the tube wall of pipeline 530.Thus, it is simple to oil gas is derived.
Discharge 540, discharge 540 includes gas gathering manifold 541 and the gas-collecting branch pipe 542 being connected with gas gathering manifold 541, wherein, it is outside that gas gathering manifold 541 is vertically situated at pyrolysis reactor 500, it is understood that outside for being vertically situated at housing 510, gas-collecting branch pipe 542 extends through the sidewall of pyrolysis reactor 500, the i.e. sidewall of housing 510, it extend in the pyrolytic reaction space of pyrolysis reactor 500, it is understood that in housing 510, and derive pipeline 530 with oil gas and be connected.Thus, utilize discharge quickly to be derived by pyrolysis oil gas, can effectively suppress the secondary response of oil gas, improve tar yield.
According to specific embodiment of the utility model, every layer of radial canal includes that multiple parallel and equally distributed radial canal and each radial canal are parallel with each radial canal in adjacent upper and lower two-layer radial canal and are in staggered distribution along reactor body short transverse.Thus, it is possible to significantly improve the pyrolysis efficiency of material, and then improve pyrolysis oil productivity.
According to specific embodiment of the utility model, oil gas derives the pipeline 530 short transverse multi-tier arrangement along pyrolysis reactor, and every layer has many oil gas the most parallel to each other and derives pipeline, and oil gas is derived and is provided with through hole on the surface of pipeline；Oil gas is derived pipeline 530 and is connected with discharge 540, and discharge 540 is connected with oil gas vent.Thus, by arranging that in radial canal lower end oil gas is derived pipeline 530 and reduced the tar time of staying in burner hearth, it is to avoid the second pyrolysis of tar, tar yield is improved.According to specific embodiment of the utility model, oil gas is derived pipeline 530 and is arranged in parallel with radial canal 520, and the left and right sides of radial canal 520 is symmetrically arranged with two oil gas and derives pipeline 530.Thus, by arranging that in the both sides of radial canal oil gas is derived pipeline 530 and decreased the tar time of staying in burner hearth, it is to avoid the second pyrolysis of tar, tar yield is improved.
According to embodiment of the present utility model, oil gas delivery line 530 is symmetrical set the lower section at each heat accumulation type radiant tube 520.Thus, it is simple to oil gas is derived, and decreases the tar time of staying in burner hearth, it is to avoid the second pyrolysis of tar, tar yield is improved.
According to embodiment of the present utility model, oil gas delivery line 530 is not particularly limited with the connected mode of pyrolysis oil gas vent 516, and according to specific embodiment of the utility model, the oil gas delivery line 530 of same layer is connected to same pyrolysis oil gas vent 516.According to specific embodiments more of the present utility model, the oil gas delivery line 530 of adjacent two layers or more layers is connected to same pyrolysis oil gas vent 516.Thus, it is possible to collected by oil gas, Simplified flowsheet also improves tar yield, simultaneously can be so that oil gas is derived.
According to specific embodiment of the utility model, oil gas derives 1/2-3 times that spacing is oil gas derivation pipeline 530 caliber d of pipeline 530 and the tube wall of neighbouring radial canal 520.Thus, it is possible to the tar that generation will be derived at once, it is to avoid coke tar cracking, improves tar yield.
According to embodiment of the present utility model, discharge 540 includes: gas-collecting branch pipe 542 and gas gathering manifold 541, and wherein, gas gathering manifold 541 is derived pipeline 530 by multiple gas-collecting branch pipes 542 with multilamellar oil gas and is connected.Thus, the pyrolysis oil gas that pyrolysis produces is derived through discharge and gas gathering manifold, can effectively suppress the secondary response of oil gas, improves tar yield.
According to embodiment of the present utility model, described heat accumulation type radiant tube is made up of heat accumulating type honeycomb ceramics and radial canal.Thus, utilizing heat accumulating type honeycomb ceramics will enter fuel and the air preheat of combustor, reduce exhaust gas temperature, the thermal efficiency is high.
With reference to Fig. 2, according to embodiment of the present utility model, described system farther includes: spiral discharging device 600, and this spiral discharging device 600 has semicoke entrance and semicoke mixture outlet, and wherein, semicoke entrance exports with the semicoke of pyrolysis reactor 500 and is connected.Thus, according to the demand of follow-up treating capacity, the rotating speed of adjustable screw discharger, the discharging speed of semicoke etc. is controlled.
With reference to Fig. 3, according to embodiment of the present utility model, this system farther includes: the second cyclone separator 700, and this second cyclone separator 700 has pyrolysis oil gas mixture entrance, purifies oil gas vent and solid particle outlet, and pyrolysis oil gas mixture entrance is connected with gas gathering manifold 541.Thus, utilize the second cyclone separator that pyrolysis oil gas is carried out purified treatment, fixing granule and the dusts such as the semicoke being mixed in removal pyrolysis oil gas, prevent fixing granule and dust block system, the safety and stability of raising system, and pyrolysis oil and the purity of combustion gas that later separation obtains are high, and quality is good.Further, the semicoke of purified treatment isolated enters feeding screw, feeding screw conveying carry out subsequent treatment, efficiently reduce semicoke loss in production procedure, improve the utilization rate of semicoke.
With reference to Fig. 4, according to embodiment of the present utility model, this system farther includes: spray column 800, and this spray column 800 has purification oil gas entrance, tar outlet and combustible gas outlet, wherein, purifies oil gas entrance and is connected with purifying oil gas vent.Thus, utilize spray to process, reduce the temperature of pyrolysis oil gas, make the tar etc. in pyrolysis oil gas liquefy, and then, by gas-liquid separation, obtain tar and combustible gas.
With reference to Fig. 5, according to embodiment of the present utility model, this system farther includes: combustion gas air-introduced machine 1300, and this combustion gas air-introduced machine 1300 has fuel gas inlet and gas outlet, and wherein, fuel gas inlet is connected with combustible gas outlet；Fuel cartridge 1400, this fuel cartridge 1400 has storage tank fuel gas inlet and storage tank gas outlet, and wherein, storage tank fuel gas inlet is connected with described gas outlet.Thus, utilize combustion gas air-introduced machine that combustible gas is delivered to fuel cartridge to store.
With reference to Fig. 6, according to embodiment of the present utility model, this system farther includes: combination drying machine 900, disintegrating machine 1100 and melting furnace 1200, this combination drying machine 900 has semicoke entrance, coal entrance, limestone entrance and mixed material outlet, wherein, semicoke entrance is connected with the semicoke mixture outlet of spiral discharging device 600, semicoke is delivered to combination drying machine by spiral discharging device 600, mix with coal dust and limestone in combination drying machine 900, obtain mixed material, in mixed process, coal dust and semicoke heat exchange, the moisture of coal self separates out and is dried.Limestone then can consolidate sulfur when gasification, reduce the sulfur content in gasification gas, add the limestone low cost than high-temperature gas desulfurization in the feed, add limestone when gasification simultaneously and can reduce ash fusion point, reduce gasification temperature, improve the energy efficiency of gasification system.Disintegrating machine 1100 has mixed material entrance and broken material outlet, wherein, mixed material entrance is connected with mixed material outlet, for mixed material is carried out break process, obtain material powders, the particle diameter of mixed material reduces, it is simple to follow-up gasification and melting processes, and reduces the temperature and time that gasification and melting processes；Melting furnace 1200 has gasification and melting material inlet, gasifying medium entrance, gasification gas outlet and slag-drip opening, wherein, gasification and melting material inlet is connected with broken material outlet, gasifying medium entrance is connected with percolate outlet, utilize garbage filter concentrated solution and partial air as gasifying medium, with above-mentioned mixed material as raw material, carry out gasification and melting reaction, produce gasification gas and molten ash.Hereby it is achieved that the making full use of of refuse.
For the ease of understanding aforesaid organic waste pyrolysis system, this utility model provides a kind of method utilizing aforesaid organic waste pyrolysis system to process organic waste.With reference to Fig. 7, according to embodiment of the present utility model, explaining the method processing organic waste, the method includes:
S100 Screening Treatment
According to embodiment of the present utility model, organic waste supply is carried out Screening Treatment to described screening machine, obtain the organic waste after percolate and screening.Thus, the water content of organic waste is reduced by Screening Treatment, it is simple to the follow-up pyrolysis processing that carries out, and, the gasifying medium that the percolate that screening obtains can process as gasification and melting, it is achieved making full use of of rubbish.
S200 is dried lifting and processes
According to embodiment of the present utility model, by the organic waste after screening through feeding screw supply to being dried in lifting tower, the flue gas using pyrolysis processing to obtain is dried lifting and processes described organic waste, obtains the dry mixed material containing flue gas and garbage drying.Thus, the flue gas utilizing pyrolysis processing to obtain is dried lifting and processes described organic waste, reduces the water content of organic waste further, promotes the carrying out of pyrolysis processing.
S300 separating treatment
According to embodiment of the present utility model, the dry mixed material containing flue gas and garbage drying is supplied to described first cyclone separator, carries out separating treatment, isolated flue gas and solid refuse.Thus, the flue gas in dry mixed material is removed, it is to avoid flue gas affects pyrolytic reaction.
S400 pyrolysis processing
According to embodiment of the present utility model, the supply of described solid refuse is carried out pyrolysis processing to described pyrolysis reactor, in order to obtain being pyrolyzed in oil gas and semicoke, and the flue gas supply extremely described dry riser described pyrolysis processing produced.The pyrolysis reactor utilizing this utility model embodiment can effectively suppress the secondary response of oil gas, improve tar yield, and have employed heat accumulating type without heat carrier radial canal heating technique, without gas, solid heat carrier, improve the calorific value of pyrolysis gas, to have taken into account equipment few for pyrolysis reactor simultaneously, easily operates, the advantage such as failure rate is low.
The method processing organic waste according to this utility model embodiment, utilize pyrolysis reactor that rubbish is pyrolyzed, can effectively suppress the secondary response of oil gas, improve tar yield, and have employed heat accumulating type and utilize septate heat transfer heat without heat carrier radial canal, it is not necessary to gas, consolidate heat carrier, improve the calorific value of pyrolysis gas, simultaneously because organic waste pyrolysis system can modular combination, the method is applicable to different garbage treatment quantity, it is easy to industrialization promotion.
With reference to Fig. 8, according to embodiment of the present utility model, the method farther includes:
S500 purified treatment
According to embodiment of the present utility model, the supply of described pyrolysis oil gas is carried out purified treatment to the second cyclone separator, in order to be purified oil gas and solid particle.Thus, utilize the second cyclone separator that pyrolysis oil gas is carried out purified treatment, fixing granule and the dusts such as the semicoke being mixed in removal pyrolysis oil gas, prevent fixing granule and dust block system, the safety and stability of raising system, and pyrolysis oil and the purity of combustion gas that later separation obtains are high, and quality is good.Further, the semicoke of purified treatment isolated enters feeding screw, feeding screw conveying carry out subsequent treatment, efficiently reduce semicoke loss in production procedure, improve the utilization rate of semicoke.
With reference to Fig. 8, according to embodiment of the present utility model, the method farther includes:
S600 spray processes
According to embodiment of the present utility model, the supply of described purification oil gas is carried out spray process to spray column, in order to obtain tar and combustible gas.Thus, utilize spray to process, reduce the temperature of pyrolysis oil gas, make the tar etc. in pyrolysis oil gas liquefy, and then, by gas-liquid separation, obtain tar and combustible gas.
With reference to Fig. 8, according to embodiment of the present utility model, described method farther includes:
S700 combustible gas stores
Described combustible gas is stored to fuel cartridge through the supply of combustion gas air-introduced machine.Thus, utilize combustion gas air-introduced machine that combustible gas is delivered to fuel cartridge to store.According to embodiments more of the present utility model, combustible gas can be delivered to pyrolysis reactor and provide the energy for pyrolysis processing, reduces the pyrolysis dependence to extra power, it is achieved the abundant comprehensive utilization of the energy.
According to embodiment of the present utility model, the method farther includes:
S800 combination drying crushes
Utilize spiral discharging device to supply described semicoke to combination drying machine, and carry out combination drying with coal dust and limestone, obtain the mixed material being dried；Described dry mixed material supply is carried out pulverization process to disintegrating machine, obtains material powders, be crushed to 200～500 μm.Thus, mixing with coal dust and limestone, obtain mixed material in combination drying machine 900, in mixed process, coal dust and semicoke heat exchange, the moisture of coal self separates out and is dried, and mixed material is cooled to 80～200 degree.Limestone then can consolidate sulfur when gasification, reduce the sulfur content in gasification gas, add the limestone low cost than high-temperature gas desulfurization in the feed, add limestone when gasification simultaneously and can reduce ash fusion point, reduce gasification temperature, improve the energy efficiency of gasification system, then, mixed material is carried out break process, the particle diameter of the material powders obtained is 200～500 μm, the particle diameter of material reduces, it is simple to follow-up gasification and melting processes, and reduces the temperature and time that gasification and melting processes.
Mass ratio according to embodiment of the present utility model, semicoke and coal dust gross mass Yu limestone is (5-200): 1.Semicoke and coal dust gross mass can be adjusted according to semicoke and the sulfur content of coal dust and ash fusion point with the mass ratio of limestone.According to embodiment of the present utility model, in gasification gas, sulfur content is low, and more preferably, meanwhile, ash melting point is low, and service life and energy efficiency to gasification furnace are all useful for the quality of gasification gas.
According to embodiment of the present utility model, the particle diameter of coal dust is 8-12mm.According to preferred embodiment of the present utility model, the particle diameter of coal dust is 10mm.Thus, it is simple to uniformly mix.
According to embodiment of the present utility model, the particle diameter of limestone is 8-12mm.According to preferred embodiment of the present utility model, the particle diameter of limestone is 10mm.Thus, it is simple to uniformly mix.
S900 gasification and melting processes
To melting furnace, the supply of described material powders being carried out gasification and melting process, obtains gasify gas and molten ash, wherein, the gasifying medium that described gasification and melting processes is described percolate and air.Thus, utilize garbage filter concentrated solution and partial air as gasifying medium, with above-mentioned mixed material as raw material, carry out gasification and melting reaction, produce gasification gas and molten ash.Hereby it is achieved that making full use of of refuse, it is prevented effectively from the generation producing garbage.According to embodiment of the present utility model, the liquid lime-ash that gasification produces is discharged by gasification and melting furnace bottom, produces the products such as fertilizer, cement, construction material after quenching becomes vitreous body.
According to embodiment of the present utility model, the method farther includes:
S1000 quenching
Described molten ash is carried out quenching, obtains vitreous body lime-ash.Thus, by quenching molten ash, in lime-ash, heavy metal ion content is few, and two English content are low, and vitreous body lime-ash can be used for preparing the products such as fertilizer, cement, construction material.
Below with reference to specific embodiment, this utility model is illustrated, it should be noted that these embodiments are merely illustrative, and it is not intended that to restriction of the present utility model.
Embodiment 1
Utilize the organic waste pyrolysis system of this utility model embodiment, with municipal refuse, Sichuan Hibisci Mutabilis coal and limestone as raw material, carry out garbage disposal, wherein, as shown in Figure 6, garbage disposal flow process is as described in Figure 9 for the structure of organic waste pyrolysis system, wherein, domestic waste and Sichuan Hibisci Mutabilis coal component analysis are as shown in the table, and rubbish water content is 43%, and concrete waste disposal method is as follows:
1, municipal refuse is marched into the arena, and carries out rubbish pretreatment, and the material being difficult to big particle diameter dregs, glass and the metal etc. that contain in rubbish be pyrolyzed or can not be pyrolyzed is rejected in advance.
2, the rubbish after rejecting being difficult to pyrogen is delivered to be dried lifting tower and is dried process after being fed directly to sanitary fill compression dehydration, obtain dried rubbish；
3, dried rubbish is delivered to pyrolysis reactor and carries out pyrolysis processing, obtain semicoke and pyrolysis oil gas, control to enter the combustion gas of radial canal and air stoichiometry and amount, control the temperature of pyrolysis oven, ensure that pyrolysis indoor temperature is about 680 DEG C, and controlling the rotating speed of spiral discharging device bottom pyrolysis reactor so that rubbish mean residence time is about 1.5h, then discharges pyrolysis reactor through bottom discharge spiral.
4, with the ratio of ratio 36.76:52.33:10.91, semicoke, Sichuan Hibisci Mutabilis coal coal and limestone being mixed powder process, prepared compound mean diameter is about 300 μm.
5, melting furnace gasification is fed the mixture into, gasifying agent uses percolate and partial air, gasification and melting furnace temperature 1300 DEG C, in melting furnace, rubbish charcoal, coal react with gasifying agent generating gasification, produce gasification gas and liquid glass body lime-ash, building sand after the recovered noble metal of liquid lime-ash.
6, the pyrolysis oil gas that pyrolysis oven pyrolysis produces is after Oil-gas Separation, obtain high-quality pyrolytic tar, wherein, the pyrolysis gas of about 75% enters pyrolysis reactor burning provides fuel for pyrolysis processing, and the gentle activating QI of pyrolysis gas of about 25% is blended and the laggard gas turbine combustion of preliminary purification generates electricity.
Lime-ash is analyzed: two English content in chilling slag are 1.3ng-TEQ/kg, Pb Leaching value be 0.2013mg/L, Cr Leaching value be 0.387mg/L, Cd Leaching value be 0.147mg/L, remaining does not detects, and meets about Extraction Toxicity Identification Standard of Hazardous Waste.
Embodiment 2
Utilize the organic waste pyrolysis system of this utility model embodiment, with municipal refuse, Huainan, Anhui anthracite and limestone as raw material, carry out garbage disposal, wherein, as shown in Figure 6, garbage disposal flow process is as described in Figure 9 for the structure of organic waste pyrolysis system, wherein, domestic waste and Sichuan Hibisci Mutabilis coal component analysis are as shown in the table, and rubbish water content is 51%, and concrete waste disposal method is as follows:
| Project | Fabric | Plastics | Paper | Timber | More than kitchen | Dregs | Glass, metal | Amount to |
| Municipal refuse | 4.97 | 21.35 | 17.76 | 5.98 | 21.23 | 16.63 | 12.08 | 100 |
1, municipal refuse is marched into the arena, and carries out rubbish pretreatment, and the material being difficult to big particle diameter dregs, glass and the metal etc. that contain in rubbish be pyrolyzed or can not be pyrolyzed is rejected in advance.
2, the rubbish after rejecting being difficult to pyrogen is delivered to be dried lifting tower and is dried process after being fed directly to sanitary fill compression dehydration, obtain dried rubbish；
3, dried rubbish is delivered to pyrolysis reactor and carries out pyrolysis processing, obtain semicoke and pyrolysis oil gas, control to enter the combustion gas of radial canal and air stoichiometry and amount, control the temperature of pyrolysis oven, ensure that pyrolysis indoor temperature is about 700 DEG C, and controlling the rotating speed of spiral discharging device bottom pyrolysis reactor so that rubbish mean residence time is about 1.0h, then discharges pyrolysis reactor through bottom discharge spiral.
4, with the ratio of ratio 47.3:42.1:10.6, pyrolytic carbon, Huainan, Anhui anthracite, limestone being mixed powder process, prepared compound mean diameter is about 400um.
5, feeding the mixture into melting furnace gasification, gasifying agent uses percolate and partial air, gasification and melting furnace temperature 1420 DEG C, in melting furnace, rubbish charcoal and the reaction of coal generating gasification, produce gasification gas and liquid lime-ash, building sand after the recovered noble metal of liquid lime-ash.
6, the pyrolysis oil gas that pyrolysis oven pyrolysis produces is after Oil-gas Separation, obtain high-quality pyrolytic tar, wherein, the pyrolysis gas of about 80% enters pyrolysis reactor burning provides fuel for pyrolysis processing, and the gentle activating QI of pyrolysis gas of about 20% is blended and the laggard gas turbine combustion of preliminary purification generates electricity.
Lime-ash is analyzed: two English content in chilling slag are 1.1ng-TEQ/kg, Pb Leaching value is 0.2375mg/L, Cr Leaching value is 0.409mg/L, Cd Leaching value is 0.185mg/L, Hg Leaching value is 0.024mg/L, remaining does not detects, and meets about Extraction Toxicity Identification Standard of Hazardous Waste.
In the description of this specification, the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means that the specific features, structure, material or the feature that combine this embodiment or example description are contained at least one embodiment of the present utility model or example.In this manual, the schematic representation to above-mentioned term is not necessarily referring to identical embodiment or example.And, the specific features of description, structure, material or feature can combine in any one or more embodiments or example in an appropriate manner.
Embodiment the most of the present utility model, it will be understood by those skilled in the art that: these embodiments can carry out in the case of without departing from principle of the present utility model and objective multiple change, revise, replace and modification, scope of the present utility model is limited by claim and equivalent thereof.
Claims (10)
1. an organic waste pyrolysis system, it is characterised in that including:
Screening machine, feeding screw, dry lifting tower, the first cyclone separator, and pyrolysis reactor, wherein, described screening machine, described feeding screw, described dry lifting tower, described first cyclone separator and described pyrolysis reactor are sequentially connected logical,
Wherein, described pyrolysis reactor includes:
Pyrolysis garbage inlet and semicoke outlet；
Described pyrolysis garbage inlet is positioned at the top of described pyrolysis reactor, and is connected with the solid refuse outlet of described first cyclone separator；
The outlet of described semicoke is positioned at the bottom of described pyrolysis reactor；
Heat accumulation type radiant tube, described heat accumulation type radiant tube in the inside of described pyrolysis reactor along the short transverse multi-tier arrangement of described pyrolysis reactor, every layer has many heat accumulation type radiant tubes the most parallel to each other, and the exhanst gas outlet on described heat accumulation type radiant tube is connected with the smoke inlet of described dry lifting tower；
Oil gas derives pipeline, and described oil gas is derived and is provided with through hole on the tube wall of pipeline；
Discharge, described discharge includes gas gathering manifold and the gas-collecting branch pipe being connected with described gas gathering manifold,
Wherein, described gas gathering manifold is vertically situated at outside described pyrolysis reactor,
Described gas-collecting branch pipe extends through in the sidewall of described pyrolysis reactor extend into described pyrolysis reactor and derives pipeline with described oil gas and is connected.
Organic waste pyrolysis system the most according to claim 1, it is characterised in that described gas-collecting branch pipe is multiple, and arranged parallel to each other along the length direction of described gas gathering manifold.
Organic waste pyrolysis system the most according to claim 1, it is characterised in that described oil gas derives the pipeline short transverse multi-tier arrangement along described reactor, and every layer has many oil gas the most parallel to each other and derives pipeline.
Organic waste pyrolysis system the most according to claim 1, it is characterised in that described oil gas is derived pipeline and is arranged in parallel with described heat accumulation type radiant tube, and the respective left and right sides of described heat accumulation type radiant tube is symmetrically arranged with two oil gas derivation pipelines.
5. according to the organic waste pyrolysis system described in claim 1-, it is characterised in that described oil gas derives 1/2-3 times that the distance between pipeline and the tube wall of neighbouring described heat accumulation type radiant tube is described oil gas derivation pipe diameter d,
Optional, described oil gas is derived and is provided with multiple through hole on the tube wall of pipeline, optional, and oil gas described in same layer is derived pipeline and is communicated to same described gas-collecting branch pipe.
Organic waste pyrolysis system the most according to claim 1, it is characterised in that farther include:
Second cyclone separator, described second cyclone separator has pyrolysis oil gas mixture entrance, purifies oil gas vent and solid particle outlet, and described pyrolysis oil gas mixture entrance is connected with described gas gathering manifold.
Organic waste pyrolysis system the most according to claim 1, it is characterised in that farther include:
Spiral discharging device, described spiral discharging device has semicoke entrance and semicoke mixture outlet, and described semicoke entrance is connected with the outlet of described semicoke.
Organic waste pyrolysis system the most according to claim 6, it is characterised in that farther include:
Spray column, described spray column has purification oil gas entrance, tar outlet and combustible gas outlet, and described purification oil gas entrance is connected with described purification oil gas vent.
Organic waste pyrolysis system the most according to claim 8, it is characterised in that farther include:
Combustion gas air-introduced machine, described combustion gas air-introduced machine has fuel gas inlet and gas outlet, and described fuel gas inlet is connected with the outlet of described combustible gas；And
Fuel cartridge, described fuel cartridge has storage tank fuel gas inlet and storage tank gas outlet, and described storage tank fuel gas inlet is connected with described gas outlet.
10. according to the organic waste pyrolysis system according to any one of claim 1-9, it is characterised in that farther include:
Combination drying machine, described combination drying facility have semicoke entrance, coal entrance, limestone entrance and mixed material outlet, and described semicoke entrance is connected with described semicoke mixture outlet；
Disintegrating machine, described disintegrating machine has mixed material entrance and broken material outlet, and described mixed material entrance is connected with the outlet of described mixed material；And
Melting furnace, described melting furnace has gasification and melting material inlet, gasifying medium entrance, gasification gas outlet and slag-drip opening, described gasification and melting material inlet is connected with the outlet of described broken material, and described gasifying medium entrance is connected with the outlet of described percolate.
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| CN201620160678.0U CN205635472U (en) | 2016-03-02 | 2016-03-02 | Organic garbage pyrolytic system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105694925A (en) * | 2016-03-02 | 2016-06-22 | 北京神雾环境能源科技集团股份有限公司 | Organic waste pyrolysis system and application thereof |
| CN106590702A (en) * | 2017-02-04 | 2017-04-26 | 源创环境科技有限公司 | Low-temperature pyrolysis power generation system and method for household garbage |
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2016
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105694925A (en) * | 2016-03-02 | 2016-06-22 | 北京神雾环境能源科技集团股份有限公司 | Organic waste pyrolysis system and application thereof |
| CN105694925B (en) * | 2016-03-02 | 2018-02-27 | 神雾科技集团股份有限公司 | Organic waste pyrolysis system and its application |
| CN106590702A (en) * | 2017-02-04 | 2017-04-26 | 源创环境科技有限公司 | Low-temperature pyrolysis power generation system and method for household garbage |
| CN106590702B (en) * | 2017-02-04 | 2017-10-10 | 源创环境科技有限公司 | A kind of house refuse low temperature pyrogenation electricity generation system and method |
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