CN103756697B - Method and system for processing waste and sludge - Google Patents

Method and system for processing waste and sludge Download PDF

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Publication number
CN103756697B
CN103756697B CN201410006678.0A CN201410006678A CN103756697B CN 103756697 B CN103756697 B CN 103756697B CN 201410006678 A CN201410006678 A CN 201410006678A CN 103756697 B CN103756697 B CN 103756697B
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rubbish
mud
gas
processing
heater
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CN103756697A (en
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吴道洪
阮立明
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Shenwu Technology Group Corp Co Ltd
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BEIJING SHENWU ENVIRONMENT ENERGY TECHNOLOGY GROUP Co Ltd
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Abstract

The invention discloses a method and a system for processing waste and sludge. The method comprises steps of S1. preprocessing raw waste so as to obtain waste to be processed; S2. dewatering and stoving the sludge; S3. mixing the waste to be processed with the sludge of the step S2 and extruding and shaping; S4. dry distilling the mixture of processed waste and sludge so as to generate oil gas product and solid product; S5. collecting oil gas product and separating retorting gas, tar and sewage out, sorting the solid product so as to obtain semicoke and residue; S6. purifying the generated retorting gas, and then storing in a gas storing tank; and S7. post processing the sewage, tar and semicoke and recycling. By adopting the method for processing waste and sludge, the efficiency is improved, the energy of two resources can be concentrated and recycled together, the cost is lowered, and the pollution of waste and sludge treatment to environment is reduced.

Description

The processing method of rubbish and mud and its processing system
Technical field
The present invention relates to industrial technical field, especially relate to processing method and its processing system of a kind of rubbish and mud System.
Background technology
In recent years, deepening continuously with reform and opening-up, city living standards of the people improve constantly, and urban population increases rapidly Long, city size constantly expands, and the discharge capacity of corresponding domestic waste and municipal wastewater is also continuously increased, and produces and dissolves Between contradiction increasingly prominent.
Domestic waste is the inevitable product of mankind's activity, and these rubbish include: the material that is hazardous to the human body, The physical pollution thing such as organic pollution, radwaste such as harmful microorganism, chlorinated hydrocabon/hydrocarbon gas and parasitism Other pollutant such as worm/insect/foul smell.Domestic rubbish disposal improper by severe contamination air, soil and water source, and cause mosquitos and flies Multiply, the propagation of pathogenic bacteria, so that the physical and mental health of people is seriously threatened.At present, urban life widely used both at home and abroad Trash processing way mainly has three kinds of processing modes such as sanitary landfills, burning, compost.
The deposit producing in Municipal sewage disposal process, including solid matter contained in sewage, float Matter, colloidal substance and the sediment being separated from the water out, are referred to as mud.This sludge moisture content is high, perishable, has strong Stink, and containing parasitic ovum, pathogenic microorganism and heavy metal, if do not dealt carefully with, arbitrarily discharge, it will cause Secondary pollution.The processing method of mud includes the final process such as the burning of mud, pyrolysis, landfill, Land_use change.Sewage treatment plant The dewatered sludge moisture content about 80% processing through dehydration equipment, can meet transport, the requirement of secondary utilization.
Burning disposal is to be burned rubbish or mud by incinerator using fuel, can make the body of rubbish or mud Amass and be reduced to minimum, reduced training is obvious.But burning needs to consume the substantial amounts of energy, and the cost of burning and running cost are all very High.In addition, burning can cause the discharge of the dangerous substances such as heavy metal and dioxin.
Land_use change and compost treatment are affected by component in rubbish or mud, because the source of rubbish or mud is complicated, The content of material such as heavy metal are unstable, constrain the development of Land_use change technology and compost treatment;Landfill disposal is all rubbish Or the final process means of specific resistance to filtration technology, need to solve the process problem of percolate and landfill biogas.
In addition, during the most of urban operating mechanism of China is built, house refuse and municipal sludge are using separately process, energy and product The utilization difficulty of product is larger, and overall investment and operating cost are higher.
Content of the invention
It is contemplated that at least solving one of technical problem present in prior art.For this reason, one object of the present invention It is the processing method proposing a kind of environmental friendliness and the rubbish of low cost and mud.
Further object is that proposing a kind of reducing energy consumption and the processing system of the rubbish of low cost and mud.
The processing method of the rubbish of embodiment and mud according to a first aspect of the present invention, comprises the following steps: s1, will be primary Rubbish carries out pretreatment and obtains pending rubbish;S2, by described sludge dewatering and dry;S3, by described pending rubbish and step Mud in rapid s2 mixes and carries out extruding and processing and forming is processed;S4, the rubbish after processing in step s3 and mud is mixed Compound dry distilling is to generate oil gas product and solid product;S5, the described oil gas product in step s4 is collected and isolates Carbonization gas, tar and sewage, carry out sorting to described solid product and obtain semicoke and residue;S6, dry by produce in step s5 Evaporate after gas purifies and be stored in air accumulator;And s7, the sewage in step s5, tar and semicoke carry out subsequent treatment and reclaim Using.
Rubbish according to embodiments of the present invention and the processing method of mud, to be added by forming rubbish and mud mixing Work raw material, in raw material to be processed, rubbish and mud have each served as the effect of binding agent, water absorbing agent, and both sides are all as other side's Useful supplement, simplifies the treatment process of raw material to be processed, thus improve process efficiency, and, by oil in rubbish and mud Gas resource it is achieved that the energy centralized recovery of two spike-type cultivars utilizes, can effectively reduce rubbish and dirt by the way of extracting simultaneously Overall investment and operating cost that mud is processed.In addition, the application, compared with traditional rubbish and sludge incineration method, decreases cigarette Gas discharge and dust emission, have prevented the pollution to environment for two English, and will not produce the danger wastes such as substantial amounts of flying dust, from And to more environment-friendly.
In addition, according to the rubbish of the present invention and the processing method of mud, also there is following additional technical feature:
According to one embodiment of present invention, before described step s3, also include: step s21, will be pre- in described step s1 Pending rubbish after process is dried.Thus, by pending rubbish is carried out drying and processing, can effectively reduce pending The water content of rubbish.
Alternatively, in step s2, described mud being dehydrated and dried is to pass through dehydration equipment and dehydrator realization respectively 's.Thus, process simple and low cost.
Alternatively, described step s4 is realized by gas retort, has heater in described gas retort, described heating Device includes heating tube.Thus, there is by setting the heater of heating tube, fuel can be in heating combustion inner pipe and dry distilling Atmosphere isolation in stove.
According to one embodiment of present invention, described air accumulator is connected with described heater to be passed through described carbonization gas In described heater.Thus, carbonization gas can effectively save energy and environmental friendly as the fuel of heater.
Further, described heater is connected with described dehydrator and is passed through institute with the flue gas discharging described heater State in dehydrator.Thus, raw material to be dried from the flue gas that heater is discharged is for dehydrator provides and dries energy, solves The problem that traditional external-heat mode of heating energy expenditure is big, operating cost is high.
Alternatively, the flue gas that described heater is discharged and rubbish to be dried in described dehydrator and/or mud heat exchange After be passed through flue gas purifying equipment and purified.Thus, by arrange flue gas purification system, effectively prevent flue gas unqualified and Situation to environment.
Alternatively, by the mixture of the rubbish after described drying machine drying and mud in described gas retort uniform stone, The thickness of described stone is 50~400mm.
Alternatively, the pyrolysis temperature in described gas retort is 350~800 DEG C.
Further, the mixture of the rubbish after described drying machine drying and mud stops 0.5 under described pyrolysis temperature ~2 hours.Thus, there is preferable dry distilling effect.
According to one embodiment of present invention, described gas retort has discharging mechanism, and described solid product is by described discharging Mechanism discharges.
Alternatively, described gas retort is rotation bed structure, rotary structure or fixed-bed structure.
According to one embodiment of present invention, in described step s4, the mixture of described rubbish and mud is in anaerobic state Under carry out dry distilling.Thus, the calorific value of carbonization gas can be improved to greatest extent.
The processing system of the rubbish of embodiment and mud according to a second aspect of the present invention, comprising: pre-processing device, described pre- Processing equipment is used for for crude waste carrying out pretreatment to obtain pending rubbish;Dehydration equipment, described dehydration equipment is used for will Described sludge dewatering;Dehydrator, described dehydrator is used for drying the mud after dehydration and/or described pending rubbish to obtain Raw material to be processed;Extrusion forming device, by described raw material to be processed after the described extrusion forming device described raw material to be processed of reception Carry out extruding and processing and forming is processed;Feed bin, described feed bin is connected with described extrusion forming device by belt feeder;Gas retort, Described gas retort is connected to the downstream of described feed bin to receive described raw material dry distilling after the raw material that described feed bin feeds with life Olefiant gas product and solid product, wherein said solid product includes semicoke and residue;Condensing units, described condensing units connect Described oil gas product is lowered the temperature with after receiving described oil gas product in the downstream of described gas retort;Tar separation equipment, institute State tar separation equipment and be connected with described condensing units to receive the oil gas product after the cooling that described condensing units feed, will Oil gas product after described cooling separates to obtain carbonization gas, tar and sewage;Air accumulator, after described air accumulator storage purifies Carbonization gas;And equipment for after-treatment, described equipment for after-treatment carries out subsequent treatment to sewage, tar and semicoke and recycles.
The processing system of rubbish according to embodiments of the present invention and mud is it is achieved that waste treatment facility and sewage disposal set The arranged in association applied, both achieves the recycling of the by-product mud of sewage disposal using refuse pyrolysis handling process, and Achieve the waste such as percolate and pyrolysis condensed water during domestic rubbish disposal using the sewage disposal system of sewage treatment plant Process up to standard, it is achieved thereby that effective configuration of resource.
According to one embodiment of present invention, described dehydrator by pretreated pending rubbish and dehydration after mud Dry.Thus, process simple and low cost.
Alternatively, in described gas retort, there is heater, described heater includes heating tube.Thus, by setting There is the heater of heating tube, fuel can heating combustion inner pipe and with gas retort in treating dry distilling raw material isolate.
According to one embodiment of present invention, described air accumulator is connected with described heater to be passed through described carbonization gas In described heater.Thus, carbonization gas can effectively save energy and environmental friendly as the fuel of heater.
Further, described heater is connected with described dehydrator and is passed through institute with the flue gas discharging described heater State in dehydrator.Thus, raw material to be dried from the flue gas that heater is discharged is for dehydrator provides and dries energy, solves The problem that traditional external-heat mode of heating energy expenditure is big, operating cost is high.
Alternatively, the flue gas that described heater is discharged and rubbish to be dried in described dehydrator and/or mud heat exchange After be passed through flue gas purifying equipment and purified.Thus, by arrange flue gas purification system, effectively prevent flue gas unqualified and Situation to environment.
Alternatively, by the raw material to be processed after described drying machine drying in described gas retort uniform stone, described stone Thickness be 50~400mm.
Alternatively, the pyrolysis temperature in described gas retort is 350~800 DEG C.
Further, the raw material to be processed after described drying machine drying stops 0.5~2 hour under described pyrolysis temperature. Thus, there is preferable dry distilling effect.
According to one embodiment of present invention, described gas retort has discharging mechanism, and described solid product is by described discharging Mechanism discharges.
Alternatively, described gas retort is rotation bed structure, rotary structure or fixed-bed structure.
According to one embodiment of present invention, described raw material carries out dry distilling under anaerobic state.Thus, can be to greatest extent Improve the calorific value of carbonization gas.
The additional aspect of the present invention and advantage will be set forth in part in the description, and partly will become from the following description Obtain substantially, or recognized by the practice of the present invention.
Brief description
The above-mentioned and/or additional aspect of the present invention and advantage will become from reference to the description to embodiment for the accompanying drawings below Substantially and easy to understand, wherein:
Fig. 1 is the schematic diagram of the processing system of rubbish according to an embodiment of the invention and mud;
Fig. 2 is the schematic diagram of the processing system of rubbish in accordance with another embodiment of the present invention and mud.
Specific embodiment
Embodiments of the invention are described below in detail, the example of described embodiment is shown in the drawings, wherein from start to finish The element that same or similar label represents same or similar element or has same or like function.Below with reference to attached The embodiment of figure description is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.
In describing the invention it is to be understood that term " " center ", " on ", D score, "front", "rear", " left ", The orientation of instruction such as " right ", " vertical ", " level ", " top ", " bottom ", " interior ", " outward " or position relationship are based on shown in the drawings Orientation or position relationship, be for only for ease of description the present invention and simplify description, rather than instruction or hint indication device or Element must have specific orientation, with specific azimuth configuration and operation, be therefore not considered as limiting the invention.? In description of the invention, unless otherwise stated, " multiple " are meant that two or more.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or is integrally connected;Can To be to be joined directly together it is also possible to be indirectly connected to by intermediary, it can be the connection of two element internals.For this area For those of ordinary skill, above-mentioned term concrete meaning in the present invention can be understood with concrete condition.
Processing method and its processing system of rubbish according to embodiments of the present invention and mud are described below with reference to Fig. 1-Fig. 2 System.
The processing method of rubbish according to embodiments of the present invention and mud comprises the following steps:
S1, crude waste is carried out pretreatment and obtain pending rubbish;
S2, by described sludge dewatering and dry;
S3, the mud in described pending rubbish and step s2 is mixed and extruded and processing and forming process;
S4, by step s3 process after rubbish and mud mixture dry distilling to generate oil gas product and solid product;
S5, it is collected and isolates carbonization gas, tar and sewage to the described oil gas product in step s4, to described solid Body product carries out sorting and obtains semicoke and residue;
S6, by step s5 produce carbonization gas purify after be stored in air accumulator;And
S7, the sewage in step s5, tar and semicoke carry out subsequent treatment and recycle.
That is, first crude waste is carried out the pretreatment such as dewatering, broken, screening, now the moisture content of rubbish is 50% about;Then mud is carried out processed (moisture content of the mud after being now dehydrated is 80% about), and will be dehydrated Mud afterwards carries out drying and processing, obtains the mud of moisture content 30% about;Then will be after pretreated rubbish and drying Mud mixing, and carry out extruding and processing and forming process, obtain carrying out the material of dry distilling process;By the rubbish after above-mentioned processing The mixture dry distilling of rubbish and mud is to generate oil gas product and solid product;Again by oil gas product collection, may separate out after condensation Carbonization gas, tar and sewage, wherein, carbonization gas can be stored in air accumulator after purifying (such as decoking, desulphurization and denitration etc.) Interior, it is available for productive life and uses, tar can be sold as raw material or further polish, sewage row up to standard after sewage disposal Put;Dry distilling residual solid after cooling mainly includes semicoke and residue etc., the rubbish before concrete composition and dry distilling and the group of mud Become relevant, the residual solid after high-temperature process no longer contains odorant, can sub-elect semicoke therein, be reclaimed profit With.
Rubbish according to embodiments of the present invention and the processing method of mud, to be added by forming rubbish and mud mixing Work raw material, in raw material to be processed, rubbish and mud have each served as the effect of binding agent, water absorbing agent, and both sides are all as other side's Useful supplement, simplifies the treatment process of raw material to be processed, thus improve process efficiency, and, by oil in rubbish and mud Gas resource it is achieved that the energy centralized recovery of two spike-type cultivars utilizes, can effectively reduce rubbish and dirt by the way of extracting simultaneously Overall investment and operating cost that mud is processed.In addition, the application, compared with traditional rubbish and sludge incineration method, decreases cigarette Gas discharge and dust emission, have prevented the pollution to environment for two English, and will not produce the danger wastes such as substantial amounts of flying dust, from And to more environment-friendly.
In one embodiment of the invention, also include before step s3: step s21, will be pretreated in step s1 Pending rubbish is dried.In other words, by the mud after the pretreated rubbish such as dewatering, broken, screening and dehydration Carry out drying and processing together, obtain the mixture of relatively low such as 30% about the rubbish of moisture content and mud.Thus, by treating Process rubbish and carry out drying and processing, can effectively reduce the water content of pending rubbish.
Alternatively, in step s2, mud being dehydrated and dried is to pass through dehydration equipment and dehydrator realization respectively. Thus, process simple and low cost.
Alternatively, step s4 is realized by gas retort, has heater in gas retort, and heater includes heating Pipe.In an example of the present invention, heater is the firing equipment providing dry distilling institute calorific requirement, and combustion air and fuel can Each lead into heater and heating combustion inner pipe, thus the high-temperature flue gas of generation of burning can with gas retort in atmosphere every Absolutely.
In one embodiment of the invention, air accumulator is connected with heater so that carbonization gas to be passed through in heater. In one of example of the present invention, the carbonization gas in air accumulator can be connected with heater with pipeline by press device, Carbonization gas can provide source of the gas as combustion gas for heater.It is understood that carbonization gas can all as heater combustion Material carries out dry distilling with the mixture to the rubbish in gas retort and mud, or part carbonization gas are as the fuel of heater, its Remaining carbonization gas can be as carbonization gas product so that other productive lifes use.Thus, by can be used as heater using carbonization gas Fuel, effectively save energy and environmental friendly.
In one embodiment of the invention, heater also can be passed through afterburning combustion gas, and afterburning combustion gas is used for black furnace and starts. In one of example of the present invention, heater can be provided with afterburning blast tube to be passed through afterburning combustion gas.
Further, heater is connected with dehydrator and is passed through in dehydrator with the flue gas discharging heater.Change speech It, the flue gas discharged from heater is passed through dehydrator, can carry out heat exchange with material to be dried in dehydrator, thus drying Dry material to be dried, solves the problems, such as that traditional external-heat mode of heating energy expenditure is big, operating cost is high.
Alternatively, it is passed through cigarette after the flue gas that heater is discharged and rubbish to be dried in dehydrator and/or mud heat exchange Gas cleaning equipment is purified.In one of example of the present invention, dehydrator is connected with will be with baking with flue gas purification system Flue gas after material-heat-exchanging to be dried in dry machine is passed through flue gas purification system, is purified.Thus, by arranging gas cleaning System, effectively prevent that flue gas is unqualified and situation to environment.
Alternatively, by the mixture of the rubbish after drying machine drying and mud in gas retort uniform stone, the thickness of stone Spend for 50~400mm.That is, the mixture of rubbish and mud adjuvant 50~400mm in gas retort is thick.
Alternatively, the pyrolysis temperature in gas retort is 350~800 DEG C.
Further, the mixture of the rubbish after drying machine drying and mud stops 0.5~2 hour under pyrolysis temperature. In other words, the mixture of the rubbish after drying machine drying and mud stops 0.5~2 hour at a temperature of 350~800 DEG C.By This, have preferable dry distilling effect.
In one embodiment of the invention, gas retort has discharging mechanism, and solid product is discharged by discharging mechanism.Optional Ground, discharging mechanism is sealed discharging structure.Thus, can effectively ensure that production environment is good.
Alternatively, gas retort is rotation bed structure, rotary structure or fixed-bed structure.
In one embodiment of the invention, in step s4, the mixture of rubbish and mud is done under anaerobic state Evaporate.Because the flue gas that heater produces in heating process is in isolation with the material treating dry distilling in gas retort, then Plus the Seal Design of gas retort, thus ensure that rubbish and the mixture of mud carry out dry distilling under anaerobic, thus Improve to limits the calorific value of carbonization gas.It is understood that so-called " calorific value ", refer to burn completely 1kg(or 1m3, gas Body) the energy that goes out of substance release.
The processing method of the rubbish of embodiment and mud according to a first aspect of the present invention, by before dry distilling to rubbish and/ Or mud carries out drying and processing, reduce the moisture content of rubbish and/or mud, and produced using house refuse and pyrolyzing sludge Pyrolysis gas replace the fuel that outsourcing combustion gas dries as house refuse and mud, resource utilization is high, efficiently solves tradition External-heat mode of heating consume substantial amounts of combustion gas, thus leading to the excessive problem of operating cost.
Describe the rubbish of multiple embodiments and mud according to a second aspect of the present invention referring in particular to Fig. 1-Fig. 2 in detail Processing system.
Embodiment one
As shown in figure 1, the processing system of rubbish according to embodiments of the present invention and mud includes: pre-processing device, dehydration Equipment, dehydrator, extrusion forming device, feed bin, gas retort, condensing units, tar separation equipment, air accumulator and post processing set Standby.
Wherein, pre-processing device is used for for crude waste carrying out pretreatment to obtain pending rubbish.Dehydration equipment is used for By sludge dewatering.Dehydrator is used for drying the mud after dehydration to obtain raw material to be processed.Extrusion forming device receives to be waited to locate Carried out extruding after mud after reason rubbish and drying and processing and forming is processed.Feed bin passes through belt feeder and extrusion forming device Connect.Gas retort be connected to the downstream of feed bin with receive after the raw material that feed bin feeds by raw material dry distilling with generate oil gas product and Solid product, wherein solid product include semicoke and residue.Condensing units are connected to the downstream of gas retort to receive oil gas product Afterwards oil gas product is lowered the temperature.Tar separation equipment is connected with condensing units to receive after the cooling that condensing units feed After oil gas product, the oil gas product after cooling is separated to obtain carbonization gas, tar and sewage.Dry after air accumulator storage purification Evaporate gas.Equipment for after-treatment carries out subsequent treatment to sewage, tar and semicoke and recycles.
It is to be appreciated that the term " downstream " mentioned in the application description referred to along adding according to raw material to be processed That is to say, that gas retort is connected to the downstream of feed bin, refer to is exactly in work flow, and feed bin is in dry distilling in the direction of work flow process It is connected before stove and with gas retort;Condensing units are connected to the downstream of gas retort, and refer to is exactly in work flow, and gas retort exists It is connected before condensing units and with condensing units.
In other words, crude waste is carried out the process such as dewatering, broken, screening to obtain pending rubbish by pre-processing device first Rubbish, mud passes sequentially through dehydration equipment and dehydrator is dehydrated and dries, then by the mud after pending rubbish and drying Send into extrusion forming device for example extrude with forming machine in be compressed into block or cylindric, then can be transported to material via belt feeder Storehouse, the quantitative stone structure feed to gas retort such as gas retort, the dry distilling in gas retort of the raw material after extrusion molding, produce Oil gas product for example can by gas retort top or side wall pipeline collect, be then fed into being lowered the temperature in condensing units, cooling Oil gas product afterwards is passed through to separate in tar separation equipment and obtains carbonization gas, tar and sewage, and solid product includes semicoke and residual Slag, carbonization gas can be stored in air accumulator after purifying, and equipment for after-treatment can carry out subsequent treatment to sewage, tar and semicoke respectively And recycle.
In one of example of the present invention, the raw material to be processed after drying machine drying is uniformly spread in gas retort Material, the thickness of stone is 50~400mm.That is, the mixture of rubbish and mud adjuvant 50~400mm in gas retort Thick.
Alternatively, the pyrolysis temperature in gas retort is 350~800 DEG C.
Further, the raw material to be processed after drying machine drying stops 0.5~2 hour under pyrolysis temperature.In other words, dry Raw material to be processed after dry machine is dried stops 0.5~2 hour at a temperature of 350~800 DEG C.Thus, there is preferable dry distilling Effect.
The processing system of rubbish according to embodiments of the present invention and mud is it is achieved that waste treatment facility and sewage disposal set The arranged in association applied, both achieves the recycling of the by-product mud of sewage disposal using refuse pyrolysis handling process, and Achieve the waste such as percolate and pyrolysis condensed water during domestic rubbish disposal using the sewage disposal system of sewage treatment plant Process up to standard, it is achieved thereby that effective configuration of resource.
Alternatively, there is in gas retort heater, heater includes heating tube (not shown).The present invention its In in an example, heater can be provided with combustion air and fuel channel, combustion air and fuel can be passed through heater And in heating combustion inner pipe, thus the high-temperature flue gas of generation of burning can be completely cut off with the atmosphere in gas retort.
In an example of the present invention, air accumulator is connected with heater so that carbonization gas to be passed through in heater.Example As the carbonization gas in air accumulator can be connected with heater with pipeline by press device, carbonization gas can be heating dress as combustion gas Offer source of the gas is provided.It is understood that carbonization gas can all as heater fuel with to the rubbish in gas retort and dirt The mixture of mud carries out dry distilling, or part carbonization gas are as the fuel of heater, and remaining carbonization gas can be used as carbonization gas product So that other productive lifes use.Thus, carbonization gas can effectively save energy and environmental friendly as the fuel of heater.
As shown in figure 1, heater also can be provided with afterburning blast tube, afterburning blast tube is used for adding to heater It is passed through afterburning combustion gas to start black furnace in heat pipe.
Further, heater is connected with dehydrator and is passed through in dehydrator with the flue gas discharging heater.Change speech It, the flue gas discharged from heater is passed through dehydrator, can carry out heat exchange with material to be dried in dehydrator, thus drying Dry material to be dried, solves the problems, such as that traditional external-heat mode of heating energy expenditure is big, operating cost is high.
Alternatively, it is passed through flue gas purifying equipment after the flue gas that heater is discharged and mud heat exchange to be dried in dehydrator Purified.Thus, by arranging flue gas purification system, effectively prevent that flue gas is unqualified and feelings to environment Condition.
Alternatively, gas retort has discharging mechanism, and solid product discharges (not shown) by discharging mechanism.
Alternatively, gas retort is rotation bed structure, rotary structure or fixed-bed structure.
In an example of the present invention, dry distilling raw material carries out dry distilling under anaerobic state to treating in gas retort.Due to adding The flue gas that thermal produces in heating process is in isolation, along with gas retort with the material treating dry distilling in gas retort Seal Design, thus ensure that rubbish and the mixture of mud carry out dry distilling under anaerobic, can improve to greatest extent The calorific value of carbonization gas.
Embodiment two
As shown in Fig. 2 the present embodiment two is no longer described in detail with identical part here in above-described embodiment one, in this reality Apply in example and only different places is described in detail.
In the present embodiment, the mud after pretreated pending rubbish and dehydration is all dried by dehydrator.Thus, plus Work is simple and low cost.
As shown in Fig. 2 crude waste is carried out the process such as dewatering, broken, screening to obtain waiting to locate by pre-processing device first Reason rubbish, mud is dehydrated in dehydration equipment, then carries out the mud after pending rubbish and dehydration in dehydrator Drying, thus obtaining the rubbish of moisture content less and the mixture of mud, then the mixture of rubbish and mud being sent into extruding Shaped device for example extrude with forming machine in be compressed into block or cylindric, then can be transported to feed bin via belt feeder, quantitative To gas retort such as gas retort paving stock mechanism feed, the raw material after extrusion molding can in gas retort stone 50~400mm Thickness, stops 0.5~2 hour, this raw material can be in dry distilling under anaerobic state, the oil gas product of generation at a temperature of 350~800 DEG C Can be collected by the pipeline of gas retort top or side wall, be then fed into being lowered the temperature in condensing units, the oil gas product after cooling leads to Enter to separate in tar separation equipment and obtain carbonization gas, tar and sewage, the solid product after dry distilling can sealing by gas retort Material mechanism discharges, and solid product includes semicoke and residue, and carbonization gas can be stored in after purifying (such as decoking, desulphurization and denitration etc.) In air accumulator, all or part of carbonization gas in air accumulator can be used as the fuel of gas retort heater, and remaining carbonization gas can be made Use for productive life for carbonization gas product, equipment for after-treatment can carry out subsequent treatment respectively and return to sewage, tar and semicoke Receive and utilize, for example tar can be sold as raw material or further polish, and sewage can be via qualified discharge after sewage disposal device.
In the description of this specification, reference term " embodiment ", " some embodiments ", " illustrative examples ", The description of " example ", " specific example " or " some examples " etc. means specific features, the knot describing with reference to this embodiment or example Structure, raw material or feature are contained at least one embodiment or the example of the present invention.In this manual, to above-mentioned term Schematic representation is not necessarily referring to identical embodiment or example.And, the specific features of description, structure, raw material or spy Point can combine in any one or more embodiments or example in an appropriate manner.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: not Multiple changes, modification, replacement and modification can be carried out to these embodiments in the case of the principle of the disengaging present invention and objective, this The scope of invention is limited by claim and its equivalent.

Claims (16)

1. the processing method of a kind of rubbish and mud is it is characterised in that comprise the following steps:
S1, crude waste is carried out pretreatment and obtain pending rubbish;
S2, by described sludge dewatering and dry;
S3, the mud in described pending rubbish and step s2 is mixed and extruded and processing and forming process;
S4, by step s3 process after rubbish and mud mixture dry distilling to generate oil gas product and solid product;
S5, it is collected and isolates carbonization gas, tar and sewage to the described oil gas product in step s4, described solid is produced Thing carries out sorting and obtains semicoke and residue;
S6, by step s5 produce carbonization gas purify after be stored in air accumulator;And
S7, the sewage in step s5, tar and semicoke carry out subsequent treatment and recycle, and before described step s3, also wrap Include:
Step s21, pending rubbish pretreated in described step s1 is dried to obtain the rubbish that moisture content is 30% Rubbish and the mixture of mud,
In step s2, described mud being dehydrated and being dried is to pass through dehydration equipment and dehydrator realization, described step respectively S4 is realized by gas retort, has heater in described gas retort, and described heater includes heating tube, described gas storage Tank is connected so that described carbonization gas to be passed through in described heater with described heater, described heater and described dehydrator It is connected and be passed through in described dehydrator with the flue gas discharging described heater.
2. rubbish according to claim 1 and mud processing method it is characterised in that described heater discharge cigarette It is passed through flue gas purifying equipment after gas and rubbish to be dried in described dehydrator and/or mud heat exchange to be purified.
3. the processing method of rubbish according to claim 1 and mud is it is characterised in that by after described drying machine drying The mixture of rubbish and mud uniform stone in described gas retort, the thickness of described stone is 50~400mm.
4. the processing method of rubbish according to claim 1 and mud is it is characterised in that dry distilling temperature in described gas retort Spend for 350~800 DEG C.
5. the processing method of rubbish according to claim 4 and mud is it is characterised in that rubbish after described drying machine drying The mixture of rubbish and mud stops 0.5~2 hour under described pyrolysis temperature.
6. the processing method of the rubbish according to any one of claim 1-5 and mud is it is characterised in that described gas retort There is discharging mechanism, described solid product is discharged by described discharging mechanism.
7. the processing method of rubbish according to claim 6 and mud is it is characterised in that described gas retort is tied for revolving bed Structure, rotary structure or fixed-bed structure.
8. the processing method of the rubbish according to any one of claim 1-5 and mud is it is characterised in that described step s4 In, the mixture of described rubbish and mud carries out dry distilling under anaerobic state.
9. the processing system of a kind of rubbish and mud is it is characterised in that include:
Pre-processing device, described pre-processing device is used for for crude waste carrying out pretreatment to obtain pending rubbish;
Dehydration equipment, described dehydration equipment is used for described sludge dewatering;
Dehydrator, described dehydrator is used for drying the mud after dehydration and described pending rubbish to obtain raw material to be processed, Described raw material to be processed for moisture content be 30% rubbish and mud mixture;
Extrusion forming device, described raw material to be processed is extruded after receiving described raw material to be processed by described extrusion forming device Process with processing and forming;
Feed bin, described feed bin is connected with described extrusion forming device by belt feeder;
Gas retort, the downstream that described gas retort is connected to described feed bin will be described former after the raw material that described feed bin feeds to receive Material dry distilling includes semicoke and residue to generate oil gas product and solid product, wherein said solid product;
Condensing units, described condensing units are connected to the downstream of described gas retort to receive described oil gas after described oil gas product Product is lowered the temperature;
Tar separation equipment, described tar separation equipment is connected with described condensing units to receive from the infeed of described condensing units Oil gas product after cooling, the oil gas product after described cooling is separated to obtain carbonization gas, tar and sewage;
Air accumulator, the carbonization gas after described air accumulator storage purification;And
Equipment for after-treatment, described equipment for after-treatment carries out subsequent treatment to sewage, tar and semicoke and recycles,
In described gas retort, there is heater, described heater includes heating tube, described air accumulator and described heater It is connected so that described carbonization gas to be passed through in described heater, described heater is connected with described dehydrator with by described heating The flue gas that device is discharged is passed through in described dehydrator.
10. rubbish according to claim 9 and mud processing system it is characterised in that described heater discharge It is passed through flue gas purifying equipment after flue gas and rubbish to be dried in described dehydrator and/or mud heat exchange to be purified.
The processing system of 11. rubbish according to claim 9 and mud is it is characterised in that by after described drying machine drying Raw material to be processed in described gas retort uniform stone, the thickness of described stone is 50~400mm.
The processing system of 12. rubbish according to claim 9 and mud is it is characterised in that dry distilling in described gas retort Temperature is 350~800 DEG C.
The processing system of 13. rubbish according to claim 12 and mud is it is characterised in that after described drying machine drying Raw material to be processed stops 0.5~2 hour under described pyrolysis temperature.
The processing system of 14. rubbish according to any one of claim 9-13 and mud is it is characterised in that described dry distilling Stove has discharging mechanism, and described solid product is discharged by described discharging mechanism.
The processing system of 15. rubbish according to claim 14 and mud is it is characterised in that described gas retort is revolving bed Structure, rotary structure or fixed-bed structure.
The processing system of 16. rubbish according to claim 9 and mud is it is characterised in that described raw material is in anaerobic state Under carry out dry distilling.
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CN104560072B (en) * 2014-12-26 2018-05-18 北京神源环保有限公司 Thermal decomposition of organic wastes system and method for pyrolysis
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CN105950191A (en) * 2016-04-19 2016-09-21 咸阳盘州现代农业有限公司 Integrated apparatus for carrying out heating in destructive distillation of charcoal and for treating gas produced by heating
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