A kind of MSW works in coordination with burning electricity generation system
Technical field
The utility model belongs to municipal solid waste incineration processing technology field, particularly the collaborative burning disposal electricity generation system of a kind of domestic waste, municipal sludge, changing food waste and medical waste.
Background technology
MSW mainly contains domestic waste, municipal sludge, changing food waste and medical waste.Along with the continuous expansion of domestic city scale, the continuous increase of urban population, the pollution of domestic waste, municipal sludge, changing food waste and medical waste becomes environmental problem day by day serious, urgently to be resolved hurrily.
The complicated component of domestic waste, fluctuation is large, has lasting harm, and main landfill and the incineration technology of adopting processes at present.The city comparatively large for Output of Domestic Waste, calorific capacity is higher encourages to adopt burning electricity generation technology to carry out domestic rubbish disposal, garbage disposal land occupation area can be reduced like this, reduce secondary pollution, realize innoxious, the minimizing of garbage disposal, resource.
As shown in Figure 1, Msw Incineration Power-generating System 100 comprises rubbish reception storage and supply unit 110, burns unit 120, heat energy utilization unit 140, gas cleaning and exhaust unit 130 and percolate processing unit 150.Adopt cram packer directly house refuse to be delivered to rubbish and receive storage and supply unit 110, then adopt garbage grab bucket to deliver to the incinerator burning unit 120 and burn.Burn the heat produced to be absorbed by the waste heat boiler burning unit 120, the steam that waste heat boiler produces is delivered to heat energy utilization unit 140 and is generated electricity.The regulating reservoir of percolate processing unit 150 receives rubbish and receives the percolate stored with supply unit 110, discharges after reaching the primary standard in " integrated wastewater discharge standard " after percolation liquid treating system processes.It is combustion-supporting in order to burn that the biogas that percolate processing unit 150 produces delivers to burning unit 120.Discharge after the flue gas that burning unit 120 produces reaches standard after gas cleaning and exhaust unit 130 process.
Municipal sludge is mainly derived from municipal sewage plant, has that moisture is high, content of organics is high, containing features such as heavy metal contaminants, mainly adopt landfill, compost and incineration treatment technology at present.When adopting sludge anhydration burning treatment technology, need to be equipped with municipal sludge mummification unit, to burn unit, gas cleaning and exhaust unit, floor space is large, system investments costly, and due to municipal sludge calorific capacity lower, need add auxiliary fuel, operating cost is high.
Changing food waste has the features such as water content is large, organic matter fat content is many, complicated component, and treatment process mainly contains that to pulverize in line, sanitary landfills, solid state fermentation feed, aerobic compost, anaerobic digestion, fermentative hydrogen production, burning, wet solution and microbiological treatment technology etc. several.The mainstream technology of domestic current changing food waste process is anaerobic digestion, and system flow is grown, it is high to invest, floor space large, and stink intractability is large, natural pond slag and natural pond liquid subsequent treatment not thorough, processing cost is high, encounters bottleneck in application, and domestic constructed item operation problem is many.When changing food waste burns separately, heat drying, de-oiling fat need to configure independent heating system, burn unit, gas cleaning and smoke evacuation system and sewage treatment equipment, and because moisture is high, calorific value is low, need in operation to add auxiliary fuel, operating cost is high.
Medical waste is the refuse of having directly of producing in medical treatment, disease-prevention or healthcare and other correlated activations of health organ or indirect infection, toxicity and other harmfulness, is the primary refuse in " National Hazard refuse register " 47 class hazardous wastes.Its processing method mainly contains physical sterilization, chemical disinfection, high-pressure steam sterilization method, microwave sterilization method, burning disposal method and pyrolytic incineration method etc.During the independent burning disposal of medical waste, need be equipped with and burn unit, gas cleaning and exhaust unit and sewage treatment equipment, and burn weak effect, be difficult to reach sterilizing object, secondary pollution is serious, and burning heat energy can not be utilized effectively.
At present, the process of above-mentioned municipal sludge, changing food waste, medical waste is commonly independent investment diversification process, there is the shortcomings such as system equipment investment cost is high, floor space is large, operating cost is high, resource utilization degree is low, pollutant emission standard is low.
Summary of the invention
When using prior art to carry out independent burning disposal to MSW, system equipment investment cost is high, floor space is large, operating cost is high, resource utilization degree is low, pollutant emission standard is low.The purpose of this utility model is, for above-mentioned the deficiencies in the prior art, provides a kind of MSW to work in coordination with burning electricity generation system.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is:
A kind of MSW works in coordination with burning electricity generation system, comprises Msw Incineration Power-generating System, and this Msw Incineration Power-generating System comprises rubbish and receives storage and supply unit, stores for receiving and carries house refuse; Burning unit, for receiving and the house refuse that reception stores and supply unit is carried of burning away the refuse, the heat that the waste heat boiler absorption burning of burning unit produces also produces steam, and described steam is delivered to heat energy utilization unit and generated electricity; Also comprise the municipal sludge mummification unit receiving municipal sludge, described steam is by carrying out indirect drying to the municipal sludge in municipal sludge mummification unit after heat energy utilization unit, described rubbish receives to store and also stores and carry the dewatered sludge that municipal sludge mummification unit produces for receiving with supply unit, and described burning unit is also for receiving and the dewatered sludge receiving and store and carry with supply unit of burning away the refuse.
Further, also comprise the changing food waste pretreatment unit receiving changing food waste, changing food waste pretreatment unit adopts sorting to changing food waste, broken, Separation of Solid and Liquid, grease process, solid waste dewatering process, described steam by after heat energy utilization unit to grease process, changing food waste in solid waste dewatering process carries out indirect, described rubbish receives to store and also stores and the meal kitchen waste residue carrying changing food waste pretreatment unit to produce for receiving with supply unit, described burning unit is also for receiving and the meal kitchen waste residue receiving and store and carry with supply unit of burning away the refuse.
Further, also comprise the medical waste high temperature steam treatment unit receiving medical waste, described steam is by heating the medical waste in medical waste high temperature steam treatment unit after heat energy utilization unit, pipeline between described medical waste high temperature steam treatment unit and heat energy utilization unit is provided with and controls the Desuperheating device that steam superheat is no more than 2 DEG C, described rubbish receives to store and also stores and carry the medical solid waste that medical waste high temperature steam treatment unit produces for receiving with supply unit, described burning unit is also for receiving and the medical solid waste receiving and store and carry with supply unit of burning away the refuse.
Further, described rubbish receives to store and also stores and carry the mummification waste gas that municipal sludge mummification unit produces for receiving with supply unit, and it is combustion-supporting that rubbish receives the burning of mummification waste gas for burning unit after primary air fan aspirates stored with supply unit.
Further, described rubbish receives to store and also stores and the meal kitchen waste gas carrying changing food waste pretreatment unit to produce for receiving with supply unit, and it is combustion-supporting that rubbish receives the meal kitchen burning of waste gas for burning unit after primary air fan aspirates stored with supply unit.
Further, described rubbish receives to store and also stores and carry the medical waste gas that medical waste high temperature steam treatment unit produces for receiving with supply unit, and it is combustion-supporting that rubbish receives the burning of medical waste gas for burning unit after primary air fan aspirates stored with supply unit.
Further, also comprise percolate processing unit, described percolate processing unit is used for rubbish being received the mummification wastewater treatment rear discharge up to standard storing and produce with the percolate of supply unit and municipal sludge mummification unit.
Further, also comprise percolate processing unit, described percolate processing unit is used for the kitchen waste water process rear discharge up to standard produced by changing food waste pretreatment unit.
Further, also comprise percolate processing unit, described percolate processing unit is used for the medical waste water process rear discharge up to standard produced by medical waste high temperature steam treatment unit.
Further, also comprise gas cleaning and exhaust unit, described gas cleaning and exhaust unit burn the gas cleaning process produced rear discharge up to standard by burning unit.
The beneficial effects of the utility model are:
One is: MSW of the present utility model works in coordination with burning electricity generation system, takes full advantage of the advantage of Msw Incineration Power-generating System, proposes first and house refuse, municipal sludge, changing food waste, medical waste are carried out merging burning electricity generation.Project occupation of land area can be saved significantly, reduce equipment investment expense, reduce operating cost, improve MSW resource utilization degree, improve generated energy and the operation stability of Msw Incineration Power-generating System.
Two are: MSW is concentrated and processed, the current standard that all contaminants discharge standard is followed by MSW Incineration Plant performs, pollutant emission requires far above dispersion treatment operative norm, be conducive to the environmental risk control management caused by MSW, improve management efficiency.
Three are: MSW adopts collaborative burning electricity generation mode to process, be conducive to realizing solid waste, waste water, waste gas process and recycle, the discharge of decreasing pollution thing.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing Msw Incineration Power-generating System.
Fig. 2 is the utility model one example structure schematic diagram.
Wherein, 100 is Msw Incineration Power-generating System, 110 store and supply unit for rubbish receives, and 120 for burning unit, and 130 is gas cleaning and exhaust unit, 140 is heat energy utilization unit, 150 is percolate processing unit, and 200 is changing food waste pretreatment unit, and 300 is municipal sludge mummification unit, 400 is medical waste high temperature steam treatment unit, and 500 is Desuperheating device.
Detailed description of the invention
As shown in Figure 2, an embodiment of the present utility model comprises Msw Incineration Power-generating System 100, this Msw Incineration Power-generating System 100 comprises rubbish and receives storage and supply unit 110, rubbish receive store to be mainly garbage pool that Yonker Environmental Protection Co., Ltd. designs with supply unit 110, garbage grab bucket crane that Henan Kuangshan Crane Co., Ltd. produces, store for receiving and carry house refuse, burn unit 120, for receiving and the house refuse receiving and store and carry with supply unit 110 of burning away the refuse, the waste heat boiler burning unit 120 absorbs the heat of burning generation and produces steam, the mechanical grate furnace that the incinerator burning unit 120 adopts Hunan Yonker Mechanical Manufacture Co., Ltd. to produce, the Natural Circulation list drum that waste heat boiler adopts Sichuan China Western Power Industrial Co., Ltd. to produce, balanced draft pattern medium temperature and medium pressure waste heat boiler, described steam is delivered to heat energy utilization unit 140 and is generated electricity, the model that heat energy utilization unit 140 adopts Nanjing Co., Ltd of steamer motor group to produce is the steam extraction and condensing formula Turbo-generator Set of C15-3.8/0.49, also comprise the municipal sludge mummification unit 300 receiving municipal sludge, the indirect rotary drum dryer of the critical piece of municipal sludge mummification unit 300 to be model that the excellent rich dry Engineering Co., Ltd in changzhou produces be KJG-240, described steam is by carrying out indirect drying to the municipal sludge in municipal sludge mummification unit 300 after heat energy utilization unit 140, described rubbish receives to store and also stores and carry the dewatered sludge that municipal sludge mummification unit 300 produces for receiving with supply unit 110, described burning unit 120 is also for receiving and the dewatered sludge receiving and store and carry with supply unit 110 of burning away the refuse.
Also comprise the changing food waste pretreatment unit 200 receiving changing food waste, the capital equipment of changing food waste pretreatment unit 200 designs the solid-liquid separator produced for Jiangsu Welle Environmental Protection Technology Co., Ltd., three-phase carries oil machine and solid waste contact drying dehydration equipment, changing food waste pretreatment unit 200 pairs of changing food wastes adopt sorting, broken, Separation of Solid and Liquid, grease process, solid waste dewatering process, described steam by after heat energy utilization unit 140 to grease process, changing food waste in solid waste dewatering process carries out indirect, described rubbish receives to store and also stores and the meal kitchen waste residue carrying changing food waste pretreatment unit 200 to produce for receiving with supply unit 110, described burning unit 120 is also for receiving and the meal kitchen waste residue receiving and store and carry with supply unit 110 of burning away the refuse.
Also comprise the medical waste high temperature steam treatment unit 400 receiving medical waste, the medical waste high temperature steam sterilizing cabin that medical waste high temperature steam treatment unit 400 adopts the design of Beijing side's moral accurate Chemical Equipment Co., Ltd. to produce, described steam is by heating the medical waste in medical waste high temperature steam treatment unit 400 after heat energy utilization unit 140, pipeline between described medical waste high temperature steam treatment unit 400 and heat energy utilization unit 140 is provided with and controls the Desuperheating device 500 that steam superheat is no more than 2 DEG C, Desuperheating device 500 is the model that Hangzhou Zhe Lin valve Co., Ltd produces is the Wen Qiulishi desuperheat type of W08, described rubbish receives to store and also stores and carry the medical solid waste that medical waste high temperature steam treatment unit 400 produces for receiving with supply unit 110, described burning unit 120 is also for receiving and the medical solid waste receiving and store and carry with supply unit 110 of burning away the refuse.
Described rubbish receives to store and also stores and carry the mummification waste gas that municipal sludge mummification unit 300 produces for receiving with supply unit 110, and it is combustion-supporting that rubbish receives the burning of mummification waste gas for burning unit 120 after primary air fan aspirates stored with supply unit 110.
Described rubbish receives to store and also stores and the meal kitchen waste gas carrying changing food waste pretreatment unit 200 to produce for receiving with supply unit 110, and it is combustion-supporting that rubbish receives the meal kitchen burning of waste gas for burning unit 120 after primary air fan aspirates stored with supply unit 110.
Described rubbish receives to store and also stores and carry the medical waste gas that medical waste high temperature steam treatment unit 400 produces for receiving with supply unit 110, and it is combustion-supporting that rubbish receives the burning of medical waste gas for burning unit 120 after primary air fan aspirates stored with supply unit 110.
Also comprise percolate processing unit 150, percolate processing unit 150 is mainly coagulative precipitation tank, regulating reservoir, anaerobic reactor, me.mbrane bioreactor, nanofiltration device, the reverse osmosis unit of Jiangsu Welle Environmental Protection Technology Co., Ltd.'s design, the medical waste water process rear discharge up to standard that described percolate processing unit 150 produces for rubbish being received the kitchen waste water, the medical waste high temperature steam treatment unit 400 that store the mummification waste water, the changing food waste pretreatment unit 200 that produce with the percolate of supply unit 110, municipal sludge mummification unit 300 and produce.
Also comprise gas cleaning and exhaust unit 130, gas cleaning and exhaust unit 130 are mainly semidry method deacidifying flue gas tower that Yonker Environmental Protection Co., Ltd. designs, charcoal absorption removes device, SNCR device, sack cleaner, and described gas cleaning and exhaust unit 130 burn the gas cleaning process rear discharge up to standard of generation by burning unit 120.
Domestic waste water content is 40% ~ 50%, and the rubbish adopting cram packer directly to deliver to Msw Incineration Power-generating System 100 receives and stores and supply unit 110, then adopts garbage grab bucket to deliver to the incinerator burning unit 120 and burns.Burn the heat produced to be absorbed by the waste heat boiler burning unit 120, waste heat boiler steam pressure is 4.0MPa, temperature is 400 DEG C, steam delivers to the steam extraction and condensing formula Turbo-generator Set of heat energy utilization unit 140 or back pressure extraction Turbo-generator Set generates electricity, simultaneously outwards for steam, pressure of steam supply is 0.3MPa ~ 0.6MPa, and temperature is 180 DEG C ~ 300 DEG C.Rubbish receives the regulating reservoir storing and deliver to percolate processing unit 150 with the percolate in supply unit 110.
Water content is the changing food waste feeding changing food waste pretreatment unit 200 of 80% ~ 95%, adopt sorting, broken, Separation of Solid and Liquid, grease process, solid waste dewatering process carries out pretreatment, grease process, the low-pressure steam that solid waste dehydration adopts Msw Incineration Power-generating System 100 to provide is as thermal source, solid waste dewatering process adopts indirect heating manner, during heating, temperature of charge controls be 95 DEG C ~ 120 DEG C, the time of staying is 25min ~ 35min, after solid waste pretreatment, water content is less than 40%, meal kitchen waste residue adopts airtight transportation car to deliver to rubbish and receives storage and supply unit 110.The kitchen waste water that changing food waste pretreatment unit 200 produces delivers to the regulating reservoir of percolate processing unit 150 by pipeline, the meal kitchen waste gas of generation is delivered to rubbish by pipeline and received storage and supply unit 110.
The municipal sludge water content that municipal sewage plant produces is 70% ~ 85%, mud transport vehicle is adopted to deliver to municipal sludge mummification unit 300, sludge drying adopts steam indirect drying process, the steam that steam provides from heat energy utilization unit 140, the temperature controlling mud in mud drying process is 60 DEG C ~ 93 DEG C, can not destroy the organic matter in mud, the moisture content of dewatered sludge is 40% ~ 50%, and dewatered sludge adopts transport vehicle to deliver to rubbish and receives storage and supply unit 110.Mummification waste water delivers to the regulating reservoir of percolate processing unit 150 by pipeline, and the waste gas of generation is delivered to rubbish by pipeline and received storage and supply unit 110 after condensation.
Clinical waste employing professional traffic car is delivered to medical waste high temperature steam treatment unit 400 and is carried out high-temp sterilizing, the steam that high-temperature steam provides from heat energy utilization unit 140, and Desuperheating device 500 is provided with on medical waste high temperature steam treatment unit 400 with the jet chimney of heat energy utilization unit 140, the steam superheat controlling to enter medical waste high temperature steam treatment equipment is no more than 2 DEG C; Medical solid waste water content after high temperature steam treatment is less than 40%, and the medical solid waste after fragmentation adopts airtight transportation car to deliver to rubbish and receives storage and supply unit 110.Medical waste water delivers to the regulating reservoir of percolate processing unit 150 by pipeline, and the medical waste gas of generation is delivered to rubbish by pipeline and received storage and supply unit 110 after condensation.
Receive at rubbish the garbage pool stored with supply unit 110 and be provided with the Dump gate receiving house refuse, dewatered sludge, meal kitchen waste residue, medical solid waste specially, above-mentioned MSW is poured into through special Dump gate and is piled on the rubbish heap of ferment, first adopt garbage grab bucket mixing 2 ~ 3 times, guarantee mixes, after mixed solid waste stores 2 ~ 3 days in garbage pool, and then adopt garbage grab bucket deliver to burn unit 120 burn.Percolate in garbage pool delivers to the regulating reservoir of percolate processing unit 150.
The meal kitchen waste gas that rubbish reception stores and supply unit 110 receives, mummification waste gas, medical waste gas are delivered to as First air and are burned unit 120 after primary air fan aspirates, for solid waste burning is combustion-supporting, stink is thoroughly degraded through more than 850 DEG C high temperature incinerations, thoroughly eliminates the stink that each treatment facility produces.
Percolate, mummification waste water, medical waste water, the kitchen waste water of the regulating reservoir reception of percolate processing unit 150, the volume of regulating reservoir is 5 ~ 7 times of percolate, mummification waste water, medical waste water and the kitchen waste water total amount produced every day, after percolate processing unit 150 processes, reach reuse (as cooling water etc.) in factory after the primary standard in " integrated wastewater discharge standard ", realize wastewater zero discharge.It is combustion-supporting in order to burn that the biogas that percolate processing unit 150 produces delivers to burning unit 120.
Discharge after the flue gas that burning unit 120 incinerating solid waste produces reaches " consumer waste incineration pollutant catabolic gene standard " after gas cleaning and exhaust unit 130 process.
The utility model is on the basis of municipal solid wastes incineration power generation system 100; municipal sludge mummification unit 300, changing food waste pretreatment unit 200, medical waste high temperature steam treatment unit 400 are carried out process combination; solve that municipal sludge, changing food waste, medical waste independent burning processing system floor space are large, equipment investment costly, operating cost is high, resource utilization degree is low problem; generated energy and the operation stability of Msw Incineration Power-generating System 100 can also be improved; improve environment protectment protection, decreasing pollution thing discharges.
The utility model achieves the beneficial effect saving construction investment, minimizing floor space, economize energy consumption, reduction processing cost, provide one way of life rubbish, new method that municipal sludge, changing food waste, clinical waste work in coordination with burning electricity generation, " garbage incinerating power plant of upgrade version, the environmental protection Venous Industrial garden of scaled down version ".