CN101972769A - Medical rubbish harmless resource comprehensive utilization system - Google Patents
Medical rubbish harmless resource comprehensive utilization system Download PDFInfo
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- CN101972769A CN101972769A CN2010105329163A CN201010532916A CN101972769A CN 101972769 A CN101972769 A CN 101972769A CN 2010105329163 A CN2010105329163 A CN 2010105329163A CN 201010532916 A CN201010532916 A CN 201010532916A CN 101972769 A CN101972769 A CN 101972769A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/82—Recycling of waste of electrical or electronic equipment [WEEE]
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- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a medical rubbish harmless resource comprehensive utilization system. A comprehensive utilization method comprises the following steps of: sterilizing and disinfecting medical rubbish at high temperature and high pressure, sorting out disposable syringes, containers, trays and other medical hard plastics and disposable infusion tubes, infusion bags, blood bags, rubbish liquid bags and other medical soft plastics, collecting through splitting and classification, granulating, cleaning, drying and recycling; sorting out common waste plastics, recycling after cleaning, drying and granulating; sorting out paper plastic packaging materials, pulping, dewatering and recovering paper pulp; sorting out syringe needles, scalpels and other metal items and infusion bottles, smears and other glass items, and recycling at specialized rubbish recycling departments; and crushing, dewatering and drying the rest items, sending to produce RDF (Refuse Derived Fuel), and selling the RDF or using the RDF as a fuel of a steam boiler. Medical rubbish is completly recycled at high value. The medical rubbish resources do not emit pollutants during recycling and do not bring any harm to environment.
Description
Technical field
The present invention relates to the innoxious comprehensive utilization of resources of cover medical waste system, this system belongs to the dangerous solid waste process field of environmental protection industry.
Background technology
Medical waste is the solid waste that medical institutions, physiological and pathological research institution etc. produce, mainly comprise excision thing, surgical dressing (gauze, absorbent cotton etc.), disposable transfusion device, disposable syringe, blood bag, have the treatment refuse of body fluid, epidemic victim's blood, phlegm, secretion, vomitus, clinical laboratory, discarded sample, the laboratory animal corpse the like waste of pathology department.Medical waste contains a large amount of viruses, bacterium and chemical agent, is a kind of to the great material of environmental hazard.It has been listed in the Basel Convention of control hazardous waste transboundary movement and disposal thereof in the world, the Chinese government also listed it in 1998 " national hazardous waste register ".Because medical waste has features such as total space pollution, acute infection and latent infection, its harmfulness is very big.If manage badly, deal with improperly and will bring out great environmental pollution accident, serious harm human beings'health.
Along with improving constantly of living standard, people pay attention to the quality of life quality and living environment more, and the processing of medical waste has been subjected to people's great attention! The most frequently used processing method of medical waste has:
Landfill disposal: the medical waste landfill not only takies a large amount of soils, also be difficult to accomplish innoxious, volume reduction ratio is littler, the percolate of medical waste landfill contains a large amount of viruses, bacterium and chemical agent, meeting water-supply source and soil environment have been brought long-term harm, the pernicious gases such as biogas that landfill produces bring pollution etc. to air, these insoluble problems, and serious threat is to peripheral resident's health.
Burning disposal: medical waste is through high temperature incineration, and poisonous and harmful substance is thoroughly decomposed and is transformed into inanimate matter, and it is remarkable to burn back solid waste minimizing effect, is processing method comparatively completely.
Application number is 200820212569.4 utility model patent, introduced a cover pyrolytic incineration furnace apparatus, this equipment adopts the mode that pyrolysis is fired again to carry out burning disposal, medical waste is decomposed under the indoor high temperature anaerobic condition of a combustion, gasification, short chain gas after the decomposition enters dual firing chamber and carries out purification of combustion, realizes harmless treatment.
The patent No. is the utility model patent of 02232562.X, is earlier medical waste to be fermented in negative pressure cabin, and it is combustion-supporting that the biogas of generation is sent into incinerator, and the medical waste after the fermentation process realizes harmless treatment through Roarykiln and twice burning of vertical incinerator.
Also useful plasma technology burns the equipment of medical waste, and the temperature of plasma can realize harmless treatment with medical waste moment high-temperature gasification, no residue about 10,000 ℃.But the complicated investment of plasma processing is very big, the power consumption and the expense of equipment operation are all very high, and the equipment operation maintenance specification requirement is higher, and the flue gas after the burning still need be handled.
The burning disposal of medical waste has been burnt it with the medical plastic of high value etc., causes the huge waste of resource, burns and also will consume a large amount of auxiliary fuels, is not inconsistent the requirement with sustainable development.Simultaneously, the pollutants such as dioxin that produce in the medical waste combustion process bring serious harm to environment and human health; Burning the flying dust and the slag that produce is that danger wastes still needs security landfill to handle equally, and these have all seriously limited the development of burning disposal.
Disinfect: the harm of medical waste is that it contains a large amount of viruses, bacterium and chemical agent, adopts sterilization methods such as high temperature and high pressure steam, chemical agent, microwave, radiation, can kill microorganisms such as virus, bacterium:
The patent No. is 200410035466.1 patent of invention, it is a kind of pulsation replacing process that adopts the sterilization of steam increasing temperature and pressure, vacuumizes drying, to method and the equipment thereof that medical waste is carried out harmless treatment, this method sterilization completely, does not produce secondary pollutions such as flue gas.
Application number is 200720043414.8 patent of invention, is to adopt to clear up still feeding high temperature and high pressure steam, and medical waste is carried out sterilization treatment.
The patent No. is 200410026158.2 patent of invention, is the effect that utilizes microwave, and medical waste is depolymerized, and complicated organic compound is changed into the process of nontoxic simple compounds.
Application number is 200810113500.0 patent of invention, is to utilize radiation sterilization ground method, the medical waste after pulverizing is carried out radiation sterilization handle.
Above-mentioned medical waste disinfection treatment method is widely used, can thoroughly kill wherein bacterium and virus, fundamentally solves innoxious problem.But disinfect the final disposal that is not medical waste.
Turning sludge into fuel is handled: because the content of plastics, toilet paper, staple is very big in the medical waste, calorific value is higher, can be used to make fuel, carries out recovery of resources with the form of heat energy.Comparatively the Cheng Shu method of utilizing has: one is that pyrolysis gas is combustion gas after purified treatment with the gasification of medical waste low temperature pyrogenation, can be used for the burning heating; This method still need be handled the lime-ash after the pyrolysis.They are two years old, be with after the medical waste harmless treatment, through extrusion dehydration, pulverizing, oven dry, add additives (also can mix an amount of sawdust or powder of straw according to actual needs again) such as desulfurization, heavy metal passivation, stir after the special process device fabrication goes out efficiency of combustion height, free of contamination RDF (garbage derivatived fuel), RDF can be used as boiler or other fuel with hot equipment.
If can earlier recoverable materials such as medical plastic, paper material be sorted out and recycle, more remaining combustible is carried out just science, reasonable, perfect more of heat energy recycle.
The processing method of above-mentioned medical waste and relevant technical equipment system be imperfection all, can only be a part in the complete innoxious comprehensive utilization of resources of the medical waste system.
Recycling treatment: though medical waste is harmful discarded object, but medical flexible plastics such as medical duroplasts such as disposable syringe wherein, matter holding box, dish and one-time infusion tube, infusion bag, blood bag, waste fluid bag all are that the high-quality non-toxic plastic is made, these class article have very high recycling and are worth, through just fabrication cycles utilization once more after innoxious, the purified treatment; Packing case wherein etc. contains the stationery article, also can reclaim narrow resources paper pulp by making beating; Common plastics wherein also can be recycled through after innoxious, the purified treatment; Also have glass, metal etc. to have more the value of recycling; Combustibles such as remaining foreign material such as cotton goods, wet pad can be used for producing RDF and reclaim heat energy.As seen, medical waste can all be recycled as resource.
If will carry out the recycling of resource to medical waste, the innoxious comprehensive utilization of resources of complete medical waste system should comprise: harmless treatment equipment, perfect screening installation and advanced three major parts of recycling equipment are formed reliably.This system with the medical waste harmless treatment after, effectively classify again, and sorted each component carried out the recycling of high value, only in this way can realize whole recyclings of medical waste.In the removal process of resource, the medical waste treatment system also should be considered the problem of energy savings and environmental protection.
The content of invention
The problem to be solved in the present invention just provides the innoxious comprehensive utilization of resources of the medical waste system of technological package advanced person, system perfecting, this system not only can carry out harmless treatment with the medical waste that perplexs the whole society for a long time, but also valuable waste material is wherein carried out the recycling of resource.
The innoxious comprehensive utilization of resources of medical waste system, at first medical waste is carried out high temperature high pressure process by counteracting tank, sterilization completely, clear up processing, reach innoxious requirement, and then classify effectively: disposable syringe that will be wherein according to the value and the characteristics of each composition of medical waste, matter holding box, medical duroplasts class article and one-time infusion tubes such as dish, infusion bag, the blood bag, medical flexible plastic class such as waste fluid bag article sort out, compile through the partition classification, again through pelletizing, clean, dry, packing can realize classification recovery medical plastic particle; Wherein litter decoration etc. is contained the stationery article sort out, through cleaning, making beating, scalping, fine filtering, remove that silt particle, pulp-water separate, reclaim high-quality paper pulp behind the extrusion dehydration; Common waste plastics class article are wherein sorted out, after cleaning, extrusion dehydration, oven dry, granulation, reclaim plastic grain; Category of glass article such as metal species article such as wherein syringe needle, scalpel and infusion bottle, smear are sorted out, sell toward professional salvage collection department and recycle; The residue article are that flammable class article mix through extrusion dehydration, pulverizing, oven dry, interpolation, and explained hereafter RDF such as compression clamp dog are as the fuel use of steam boiler.So far, medical waste is able to the recycling of whole high values.
For solving the technical problem of the innoxious comprehensive utilization of resources of medical waste; the innoxious comprehensive utilization of resources of medical waste of the present invention system comprises: charging equipment, HTHP digesting equipment, screening installation, medical plastic reclaimer, common plastics reclaimer, pulp recovery equipment, RDF production equipment, steam boiler equipment, sewage disposal device, waste gas treatment equipment, coal gasification apparatus, formation such as control and safety features automatically.
Charging equipment is made up of material loading hopper, hoisting mechanism, the hopper that connects material, disintegrating machine and filling material mechanism etc.
The HTHP digesting equipment is made up of counteracting tank, charging hermatic door mechanism, discharging hermatic door mechanism, steam fill valve, vavuum pump and vacuum pumping valve, air bleeding valve and digestion solution drain valve etc.
Screening installation is made up of devices such as hopper, batcher, sorting conveyer, sorting table, magnetic separator, letter sorting thing conveyer belt and letter sorting thing transport boxes.
The medical plastic reclaimer is made up of devices such as a minute dismantling device, pelleter, cleaning machine, drying machine and packing machines.
The common plastics reclaimer is made up of devices such as cleaning machine, extruding-desiccation machine, comminutor and packing machines.
Pulp recovery equipment is by disintegrating machine, beater, scalping, fine filtering machine, remove devices such as silt particle device, pulp-water seperator, spiral dewater and packing machine and form.
The RDF production equipment is made up of devices such as disintegrating machine, extruding-desiccation machine, dryer, mixing and blending machine and compression block-making machines.
Steam boiler equipment is made up of devices such as feed pump, ion-exchanger, combustion and steam boiler, gas combustion apparatus and electric control cabinets.
Sewage disposal device is made up of devices such as grille well, collecting-tank, aerating regulation pond, air supporting machine, hydrolytic tank, contact-oxidation pool, MBR (membrane bioreactor), clear water reserviors, sludge-tank, sludge press filtration machine, pipeline dredge pump, elevator pump, pipeline and valves.
Automatically control and safety features are made up of devices such as senior management computer, Programmable Logic Controller, temperature/pressure adjusting apparatus/controller, burner control, magnetic valve, breaker, A.C. contactor and electrothermal relays.
Adopt above-mentioned system equipment, all recycled after the harmless treatment of medical waste process, the sorting, realize the benign cycle of resource.
As improvement of the present invention, can be equipped with the coal gas fuel facility in the system, to improve the technical merit of system.The coal gas fuel facility is made up of devices such as coaling gear, gas generator, ash handling equipment, air-blast device, dust arrester and electrical controls.
As a further improvement on the present invention, also can be equipped with the waste gas purification treatment facility in the system, to improve the technical merit of system.The waste gas purification treatment facility is made up of equipment such as air-introduced machine, sack cleaner, adsorbent equipment and air channels.
The innoxious comprehensive utilization of resources of medical waste system is in the removal process of resource, the sewage that is produced recycles after treatment, percolate is cleared up through HTHP and is treated as digestion solution, and digestion solution is sent in the sewage disposal device after flocculation again, and system does not have the harmful waste water discharging; The waste gas that contains dust, foul smell and pernicious gas etc. that produces, qualified discharge after purified treatment, system does not have the harmful exhaust discharging; Sewage sludge is delivered in the RDF production equipment and is utilized, and system does not have harmful waste sludge discharge.As seen, the innoxious comprehensive utilization of resources process of medical waste does not have harmful " three wastes " pollutant emission, does not bring any harm to environment.The innoxious comprehensive utilization of resources of medical waste system helps realizing the harmony of human and environment and the sustainable development of human society.
Description of drawings
Below in conjunction with drawings and embodiments the present invention is described in further detail.
Fig. 1 is one embodiment of the present invention schematic diagram
Fig. 2 is a kind of embodiment schematic diagram of charging equipment among Fig. 1
Fig. 3 is a kind of embodiment schematic diagram of HTHP digesting equipment among Fig. 1
Fig. 4 is a kind of embodiment schematic diagram of screening installation among Fig. 1
Fig. 5 is a kind of embodiment schematic diagram of medical plastic recoverying equipment among Fig. 1
Fig. 6 is a kind of embodiment schematic diagram of common waste plastics recovery equipment among Fig. 1
Fig. 7 is a kind of embodiment schematic diagram of pulp recovery equipment among Fig. 1
Fig. 8 is a kind of embodiment schematic diagram of RDF production equipment among Fig. 1
Fig. 9 is a kind of embodiment schematic diagram of sewage disposal device among Fig. 1
The specific embodiment
Referring to Fig. 1; the innoxious comprehensive utilization of resources of medical waste of the present invention system is by a cover material loading equipment 1, HTHP digesting equipment 2, screening installation 3, medical waste plastics recovery equipment 4, common waste plastics recovery equipment 5, pulp recovery equipment 6, RDF production equipment 7, sewage disposal device 8, steam boiler equipment 9, control and safety features 10 etc. are formed automatically.
Referring to Fig. 2, charging equipment 1, medical waste is put into material loading hopper 101, after delivering to a high position by hoisting mechanism 102, material loading hopper upset is automatically poured material in the hopper 103 that connects material into, then falls to carry out coarse crushing (packing unpacking, broken bag) in the disintegrating machine 104, enters in the HTHP digesting equipment 2 through filling material mechanism 105 again, so far, finish the overall process of the contactless automatic charging of medical waste.
Material loading hopper and hoisting mechanism working in reciprocating mode, the volume of material loading hopper and the hoisting velocity of hoisting mechanism will be able to satisfy the requirement of the maximum processing capability of system.
Disintegrating machine and filling material mechanism only just work when filler in counteracting tank, and filler is closed filling body after finishing.For preventing that the percolate water clock from polluting the charging hermatic door mechanism of counteracting tank, filling body is provided with the hermetically-sealed construction that prevents the percolate water clock.
For improving the working environment in workshop, also for reducing the influence to atmospheric environment, the top of charging equipment will install the stainless steel seal bootr additional, and the waste gas that contains frowziness with collection is sent to purified treatment.
Referring to Fig. 3, HTHP digesting equipment 2, broken medical waste enters in the counteracting tank 112 through charging door 111, after finishing, charging closes charging door hermatic door 113 and discharging opening hermatic door 114, open steam fill valve 115 and add steam injection, beginning increasing temperature and pressure, heat-insulation pressure keeping then, medical waste is cleared up, opened 116 discharge opeings of digestion solution drain valve after fixing time; Open air bleeding valve 117 pressure releases to normal pressure, open vavuum pump 118, open vacuum pumping valve 119, counteracting tank 112 is vacuumized dehydration, then pressurize a period of time; Open steam fill valve 115 increasing temperature and pressure, heat-insulation pressure keeping once more.Open 116 discharge opeings of digestion solution drain valve after clearing up end, open 114 dischargings of discharging hermatic door at last, the innocent treatment procedure of medical waste finishes.
Counteracting tank will feed pressure air in jar when reinforced, so that form air flue in material, be beneficial to the even heating of steam and the smooth eliminating of digestion solution.
The maximum operating temperature of counteracting tank, pressure and retention time should guarantee thoroughly to kill bacterium and virus wherein, can also be convenient to clean and remove with musculature boilings such as excision thing and small white mouses to complete aquation.Simultaneously, the pressure that counteracting tank vacuumizes with hold time, particularly the liquid in wherein bottle and the bag is by abundant sucking-off should to guarantee medical waste, and the number of times of the pulsation periodic duty of high pressure and vacuum is no less than the number of times of regulation.
Send to purified treatment in the stainless steel seal bootr that the air bleeding valve outlet of counteracting tank and vavuum pump air exit can cause the charging equipment top.
Referring to Fig. 4, screening installation 3, strict classification is the prerequisite of medical waste comprehensive utilization, medical waste after the harmless treatment is through hopper 120 material loadings, to sorting conveyer 122, both sides are provided with artificial separation platform 123, the letter sorting personnel put into letter sorting thing transport box 125 with medical duroplasts class article such as the disposable syringe in the rubbish, matter holding box, dishes by batcher 121 even feedings; Medical flexible plastic class article such as one-time infusion tube, infusion bag, blood bag, waste fluid bag are put into letter sorting thing transport box 126; Common plastics class article are placed on the letter sorting thing conveyer belt 127; Carton and paper based packaging material are placed on the letter sorting thing conveyer belt 128; Category of glass article such as medicine bottle, infusion bottle, smear are put into letter sorting thing transport box 129; The metal that metal species article such as syringe needle, scalpel and magnetic separator 131 are selected is all put into letter sorting thing transport box 130; The remaining article in letter sorting back are sent in the fuel slug production equipment 7.
Article in the letter sorting thing transport box 128,130 are sold toward professional salvage collection department and are recycled.
Referring to Fig. 5; medical waste plastics recovery equipment 4; will be from letter sorting thing transport box 125; medical hard in 126; flexible plastic class article; sending into partition operation 135 breaks; remove the rubber seal in the plastic tool; the screen pack material; the accessory of unlike material such as crown cap and syringe needle; similar homogeneity article are compiled; when certain material can be sent to processing after a certain amount of: plastics are cut into particle through pelleter 136; in cleaning machine 137, clean up; in drying machine 138, dry; packing machine 139 packing is sold, and the medical plastic particle of similar high-quality also can be by processing and utilization once more.
Referring to Fig. 6; common plastics reclaimer 5; the common waste plastics of being sent here by letter sorting thing conveyer belt 127 cleans impurity such as removing silt through cleaning machine 141, and extruding-desiccation machine 142 dehydrations, comminutor 143 granulations, packing machine 144 packings are sold, with the recycling of plastic grain form.
Comminutor can produce harmful steam when molten plastic, for improving the working environment in workshop, also for reducing the harm to atmospheric environment, the top of comminutor will install the stainless steel seal bootr additional, sends to purified treatment to collect these harmful waste gas.
Referring to Fig. 7, pulp recovery equipment 6, by sorting litter decoration and the paper based packaging material that thing conveyer belt 128 is sent here, isolate paper pulp through disintegrating machine 151 fragmentations, beater 152, the pulp-water mixture through scalping 153, fine filtering machine 154, remove technical process such as silt particle device 155, pulp-water seperator 156, spiral dewater 157 and packing machine 158 and reclaim the high-quality paper pulp, can carry out the utilization once more of resource.
Referring to Fig. 8, RDF production equipment 7, the letter sorting of being sent here by sorting conveyer 122 remains article, behind disintegrating machine 161, extruding-desiccation machine 162, dryer 163, add desulfurization and heavy metal deactivator 164, also can add materials 165 such as sawdust or powder of straw, through technical process such as mixing and blending machine 166 and compression block-making machines 167 according to actual conditions, but produce the fuel of extensive use, reclaim all the other combustibles with the situation of energy recovery.
Devices such as dryer, mixing and blending machine and compression block-making machine need install the stainless steel seal bootr additional and send to purified treatment with the waste gas of collecting dust-laden and peculiar smell.
Referring to Fig. 9, sewage disposal device 8, production waste is removed through grid 170 and is entered aerating regulation pond 171 behind the bigger suspension and carry out homogeneous, equal amounts, promotes and enters air supporting machine 173 by going out water pump 172, and air-dissolving air-float can be removed part suspension and a part of polymer substance in the sewage.Then enter hydrolysis acidification pool 174, effect by anaerobic bacteria and amphimicrobe, remove portion C OD and the larger molecular organics of difficult for biological degradation is decomposed into the small organic molecule of easily biological-degradable, improve biochemical, be beneficial to of the removal of follow-up aerobic stage for organic pollution.Waste water after the decomposition enters contact-oxidation pool 175 and MBR (membrane bioreactor) 176, and good sample fermentation consumes most organic matter, and the clear water after the Separation of Solid and Liquid of film will purify is sent into clear water reserviors 177 and used for systemic circulation; Activated sludge drains in the sludge-tank 179 through slush pump 178, and mud send RDF production equipment 7 after filter press 180 processed.
Send into behind the leachate collection of medical waste and clear up processing in the counteracting tank to reduce its harm; Digestion solution is sent in the aerating regulation pond of sewage disposal device after flocculation again.
Because MBR is the most advanced both at home and abroad at present sewage disposal technology, perfect sewage disposal device makes sewage can reach the water quality of drinking public water supply after treatment, when stable water flow quality is used to clean, can guarantee the requirement of medical plastic particle cleaning.
Automatically control and safety features 10, automatic control equipment can be realized the whole-course automation operation of the innoxious comprehensive utilization of resources system equipment of medical waste, satisfies the production requirement of each subsystem and total system equipment; Safety features can provide safe and reliable protection to the startup of blower fan, water pump, motor, overload etc., avoids the damage that causes system equipment bigger; Igniting and operation to burner provide omnidistance real-time monitoring, have the flame-out safety protection function of combustion gas, avoid the generation of explosion accident; When control and safety features 10 start exception handles automatically when breaking down automatically, also provide sound and light alarm, alert simultaneously.Guarantee that municipal refuse, sludge resource fully utilize process and carry out reliably continuously.
The present invention has characteristics such as succinct practicality, environmental protection, low energy consumption.
As improvement of the present invention, also can be equipped with coal gas fuel facility 20 in the system, to improve adaptability, economy and the technical merit of system.Coal gas fuel facility 20 is made up of devices such as gas generator body, coaling machine structure, ash disposal mechanism, air-blast device, desulfation dust-extraction device and electrical control cabinets.
Selecting cheap coal for use for the operating cost that reduces system acts as a fuel; for improving the scope of application of system; make combustion gas after can be when forbidding that coal-fired area is used, help environmental protection with the fuel gas buring heating again coal, RDF or other solid fuel gasification.Heater in the system can be by the heating-up temperature difference, and reasonable Arrangement to low heated in sequence, helps making full use of of heat energy by height.
As a further improvement on the present invention, also can be equipped with waste gas purification treatment facility 30 in the system, to improve the adaptability and the technical merit of system.Waste gas purification treatment facility 30 is made up of air-introduced machine, deduster and adsorbent equipment etc.
Waste gas purification treatment facility 30 is extracted by air-introduced machine the waste gas that contains dust, foul smell and pernicious gas etc. that produces in the system production process out by stainless steel seal closure, exhaust piping, send into qualified discharge after wherein dust of deduster filtering, the adsorbent equipment absorption harmful components wherein, can avoid the operation of system that environment is brought harm.
The present invention is not limited to above-mentioned embodiment, and no matter system constitutes or how technological process changes, how different lectotype selection is, every with the high temperature and high pressure steam sterilization, clear up the mode harmless treatment, reclaim medical plastic, common plastics respectively with particle form; Reclaim discarded paper wrapper with pulp form; Reclaim the treatment process and the treatment system of all the other flammable class materials with the form of RDF, all drop within the scope of protection of the invention.
In addition, every equipment such as supply of coal gas fuel and exhaust-gas treatment that install additional on basis of the present invention improve, and to improve the system of whole adaptability, economy and technical merit, all constitute infringement of the present invention.
Claims (10)
1. a cover medical waste innoxious comprehensive utilization of resources system comprises charging equipment, HTHP digesting equipment, screening installation, medical plastic reclaimer, common plastics reclaimer, pulp recovery equipment, RDF (garbage derivatived fuel) production equipment, steam boiler equipment, sewage disposal device, waste gas treatment equipment, coal gasification apparatus, formation such as control and safety features automatically.
It is characterized in that: described charging equipment (1) is made up of material loading hopper, hoisting mechanism, the hopper that connects material, disintegrating machine and filling material mechanism etc.Described HTHP digesting equipment (2) is made up of counteracting tank, charging hermatic door mechanism, discharging hermatic door mechanism, steam fill valve, vavuum pump, vacuum pumping valve, air bleeding valve and digestion solution drain valve etc.Described screening installation (3) is made up of devices such as hopper, batcher, sorting conveyer, sorting table, magnetic separator, letter sorting thing conveyer belt and letter sorting thing transport boxes.Described medical plastic reclaimer (4) is made up of devices such as a minute dismantling device, pelleter, cleaning machine, drying machine and packing machines.Described common plastics reclaimer (5) is made up of devices such as cleaning machine, extruding-desiccation machine, comminutor and packing machines.Described pulp recovery equipment (6) by disintegrating machine, beater, scalping, fine filtering machine, remove devices such as silt particle device, pulp-water seperator, spiral dewater and packing machine and form.Described RDF production equipment (7) is made up of devices such as disintegrating machine, extruding-desiccation machine, dryer, mixing and blending machine and compression block-making machines.Described steam boiler equipment (8) is made up of devices such as feed pump, ion-exchanger, combustion and steam boiler, gas combustion apparatus and electric control cabinets.Described sewage disposal device (9) is made up of devices such as grille well, collecting-tank, aerating regulation pond, air supporting machine, hydrolytic tank, contact-oxidation pool, MBR (membrane bioreactor), clear water reserviors, sludge-tank, sludge press filtration machine, pipeline dredge pump, elevator pump, pipeline and valves.Described automatic control and safety features (10) are made up of devices such as senior management computer, Programmable Logic Controller, temperature/pressure adjusting apparatus/controller, burner control, magnetic valve, breaker, A.C. contactor and electrothermal relays.
2. the innoxious comprehensive utilization of resources of medical waste according to claim 1 system, it is characterized in that: material loading hopper in the described charging equipment (1) and hoisting mechanism working in reciprocating mode, the volume of material loading hopper and the hoisting velocity of hoisting mechanism will be able to satisfy the requirement of the maximum processing capability of system; Disintegrating machine and filling material mechanism only just work when filler in counteracting tank, and filler is closed filling body after finishing, and pollute the charging hermatic door mechanism of counteracting tank for preventing the percolate water clock, and filling body is provided with the hermetically-sealed construction that prevents the percolate water clock.
3. the innoxious comprehensive utilization of resources of medical waste according to claim 1 and 2 system is characterized in that: the top of devices such as material loading hopper, the hoisting mechanism in the described charging equipment (1), the hopper that connects material, disintegrating machine and filling material mechanism installs the stainless steel seal bootr additional sends to purified treatment with the waste gas that collection contains frowziness.
4. the innoxious comprehensive utilization of resources of medical waste according to claim 1 system, it is characterized in that: the counteracting tank in the described HTHP digesting equipment (2) is when reinforced, to in jar, feed pressure air, so that in material, form air flue, be beneficial to the even heating of steam and the smooth eliminating of digestion solution.
5. according to claim 1 or the innoxious comprehensive utilization of resources of 4 described medical wastes system, it is characterized in that: maximum operating temperature, pressure and the retention time of the counteracting tank in the described HTHP digesting equipment (2), should guarantee thoroughly to kill wherein bacterium and virus, can also be convenient to clean and remove with musculature boilings such as excision thing and small white mouses to complete aquation.Simultaneously, the pressure that counteracting tank vacuumizes with hold time, particularly the liquid in wherein bottle and the bag is by abundant sucking-off should to guarantee medical waste, and the number of times of the pulsation periodic duty of high pressure and vacuum is no less than the number of times of regulation.
6. the innoxious comprehensive utilization of resources of medical waste according to claim 1 system; it is characterized in that: the comminutor in the described common plastics reclaimer (5) can produce harmful plastics steam when molten plastic; for improving the working environment in workshop; also for reducing harm to atmospheric environment; above comminutor, install the stainless steel seal bootr additional, send to purified treatment to collect these harmful waste gas.
7. the innoxious comprehensive utilization of resources of medical waste according to claim 1 system, it is characterized in that: can add the interpolation equipment (also can add sawdust or powder of straw etc.) of desulfurization and heavy metal deactivator behind the dryer in the described RDF production equipment (7) according to actual conditions, then mix again stirring, the compression clamp dog produce satisfactory RDF.Can produce the waste gas of a large amount of dust-ladens and pernicious gas during device operations such as dryer, mixing and blending machine and compression block-making machine, for the working environment that improves the workshop, reduce pollution to atmospheric environment, said apparatus will install the stainless steel seal bootr additional, sends to purified treatment to collect these harmful waste gas.
8. the innoxious comprehensive utilization of resources of medical waste according to claim 1 system, it is characterized in that: the MBR in the described sewage disposal device (9) is the most advanced both at home and abroad at present sewage disposal technology, perfect sewage disposal device, make sewage can reach the water quality of drinking public water supply after treatment, when stable water flow quality is used to clean, can guarantee the requirement of medical plastic particle cleaning.
9. according to claim 1 or the innoxious comprehensive utilization of resources of 7 described medical wastes system; it is characterized in that: the device of needs such as the combustion and steam boiler heating in dryer in the described RDF production equipment (7) and the steam boiler equipment (8); for reducing the operating cost of system; also for the range of application of raising system; adopt cheap coal to act as a fuel; coal gasification apparatus (20) can be set in system; to make combustion gas after coal, RDF or other solid fuel gasification, help environmental protection with the fuel gas buring heating again.
10. according to claim 1～7 or the innoxious comprehensive utilization of resources of 9 described medical wastes system, it is characterized in that: described charging equipment (1), HTHP digesting equipment (2), partial devices in common plastics reclaimer (5) and the RDF production equipment (7) can produce when operation and contain dust, the waste gas of foul smell and pernicious gas etc., for reducing its harm to environment, waste gas purification treatment facility (30) also can be set in the system, harmful exhaust is through the filtration of sack cleaner, flow processs such as the absorption of adsorbent equipment, remove harmful components wherein, the gas after the purified treatment just can directly discharge in the atmosphere.
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| CN2010105329163A CN101972769B (en) | 2010-11-05 | 2010-11-05 | Medical rubbish harmless resource comprehensive utilization system |
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| CN2010105329163A CN101972769B (en) | 2010-11-05 | 2010-11-05 | Medical rubbish harmless resource comprehensive utilization system |
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