CN1884912A - Medical refuse incineration process and system equipment therefor - Google Patents

Medical refuse incineration process and system equipment therefor Download PDF

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Publication number
CN1884912A
CN1884912A CN 200610028655 CN200610028655A CN1884912A CN 1884912 A CN1884912 A CN 1884912A CN 200610028655 CN200610028655 CN 200610028655 CN 200610028655 A CN200610028655 A CN 200610028655A CN 1884912 A CN1884912 A CN 1884912A
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China
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flue gas
rotary kiln
firing chamber
burning
dual firing
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CN 200610028655
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Chinese (zh)
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刘建华
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上海金州环境工程有限公司
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Priority to CN 200610028655 priority Critical patent/CN1884912A/en
Publication of CN1884912A publication Critical patent/CN1884912A/en

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Abstract

The invention relates to a method for burning waste and relative device, wherein said method comprises: a feeding device, a burning device, a waste heat boiler, a cooling tower, and a smoke purifying system. And the invention is characterized in that: the feeding device uses turnover box storing waste to automatically turnover fed material; the burning furnace uses rotational furnace, furnace bed and two-burning room combined burning furnace; the waste heat boiler recycles waste heat to generate steam; the high-temperature smoke via cooling tower, semi-drying desulfurizing reactor and bag deduster to be purified and discharged. And the invention comprises a feeding device, a rotation furnace, a furnace bed; a two-burning room combined burning furnace, waste heat boiler, cooling tower, and smoke purifying system. The invention has the advantages that: the automatic material feeding of turnover box and the whole burning process are processed in sealed condition, without leakage, to avoid pollution.

Description

Medical refuse burning technology and system equipment thereof

One, technical field:

The present invention relates to a kind of MEDICAL WASTE TREATMENT technology, particularly disclose a kind of medical waste high temperature burning process and system equipment thereof, be applicable to the processing of all kinds of clinical wastes.

Two, background technology:

According to country's " clinical waste classified catalogue ", clinical waste is divided into five kinds in infectious refuse, pathologic refuse, damaging refuse, medicine refuse and chemistry refuse.

The medical waste treatment method of using in the world at present has high-temperature steam sterilization, microwave sterilization method, chemical disinfection, plasma method, high temperature incineration method etc.

(1) high-temperature steam sterilization

The high-temperature steam sterilization is to utilize a kind of method of the most normal use of high temperature and high pressure steam sterilization eliminating bacteria.As far back as twentieth century, people have begun to give the reusable apparatus sterilization of surgery and laboratory with high-temperature steam.Steam has the strong advantage of penetration power under HTHP, under 103kPa (gauge pressure), 121 ℃ of conditions, kept 20 minutes, and can kill the microorganism of the overwhelming majority, the high-temperature steam sterilization is a kind of easy, reliable, economical, fast and the sterilizing methods of being accepted by the public easily.

But need when adopting the steam high temperature sterilization chemistry refuse, pathologic refuse and medicine refuse etc. are done to dispose and handle in addition.

The high-temperature steam sterilization has application example in the U.S., Australia and Japan at present.

(2) microwave sterilization method

The microwave frequency that is used to sterilize is generally (2450 ± 50) MHz and two kinds of (915 ± 25) MHz.Microwave in medium by the time absorbed by medium and to produce heat, such medium is called as the absorbing medium of microwave, is exactly one of strongly absorbing medium of microwave as water; And when microwave energy in medium when being difficult for being absorbed by medium, such medium is the good conductor of microwave, the fuel factor that produces in this medium is very low.The generation of heat energy is to produce heat, thereby reach the effect of high heat sterilization with tens vibrations of per second, friction by material molecule; Simultaneously microwave also has Electromagnetic Environmental Effect, quantum effect, super electricity and leads effect etc. and influence growth of microorganism and metabolism.General moisture material has tangible absorption to microwave, heats up rapidly, and Disinfection Effect is good.The sterilization mechanism of microwave does not still have final conclusion at present, is commonly considered as based on fuel factor, and non-thermal effect is auxilliary, by the coefficient result of multiple effect.The factor that influences the microwave sterilization effect has: the character of clinical waste, moisture content, temperature, clinical waste amount, synergist.Because the fuel factor of microwave can make the medicine refuse produce different chemical changes with the chemistry refuse, discharges complicated poisonous and harmful substance.Therefore microwave sterilization is unsuitable for handling this two classes refuse.

In the more medical waste treatment method of using in the world at present, the microwave treatment technology is verified and obtain one of MEDICAL WASTE TREATMENT technology of extensive use after burning, and is applied in developed countries such as the U.S., Europe, Canada in recent years.

(3) chemical disinfection

Chemical treatment method is having long historical and application more widely aspect sterilization and the sterilization.The chemical Treatment clinical waste will be handled with Mechanical Crushing usually and be used in combination, generally be that clinical waste after the fragmentation and chemosterilant (as pulverized limestone, clorox, calcium hypochlorite, chlorine dioxide etc.) are mixed, and the stop time enough, organic substance is decomposed in disinfecting process, the infectiousness germ is killed or inactivation.

It is rising in recent years that chemical disinfection is used to handle clinical waste, obtains to use in states such as the U.S. and Australia at present.

(4) plasma method

Handling clinical waste with plasma method is an innovative technology, the principle of its disinfection is that 10000 ℃ of high temperature utilizing the plasma arc kiln to produce kill all microorganisms in the clinical waste, destroy residual cytotoxic drug, medicine and poisonous chemical agent, and makes it to be difficult to identification.In theory, any compound all can be converted into the material of vitreum shape in the electric arc kiln, and the clinical waste after this method is handled is landfill directly, can not work the mischief to environment.But the initial cost of plasma method and operating cost are all very high, only adopt in the indivedual places of the U.S..

More than four kinds of processing methods, all can not get rid of handle after decrement few, need carry out sanitary landfills or the amount handled again still bigger, and some also will carry out pre-treatment work.

(5) burning method

Burning method is present a kind of method with the most use in the world.Adopt burning method to add clinical waste more than thermal incineration to 850~1100 ℃ and under this high temperature, keep the regular hour, it can be decomposed fully and burns into ashes, subtract and hold the purified treatment that decrement thoroughly is aided with tail gas in addition, not only eliminating bacteria, virus fully, and make nuisance thoroughly become innoxious residue, and fume emission reaches innoxious standard after burning.Meanwhile, clinical waste subtracts capacity and reaches more than 90%, has significantly reduced the expense of final landfill.

At present, medical wastes incineration is disposed the following several form that mainly contains: the self-built medical wastes incineration stove of 1. fairly large medical institutions, by oneself, but generally there is not qualified gas cleaning facility, and polluted the environment of medical institutions' peripheries; 2. contract with the clinical waste center that focuses on, concentrate burning disposal by processing center; 3. clinical waste and domestic garbage mixing are burned.Present burning process is comparatively simple, original, and severe operational environment can't satisfy the requirement of national environmental standard and sanitary standard, disposes with domestic garbage mixing and forbids strictly in the environmental protection standard especially.The incorrect disposal of clinical waste, hygienic conditions, health of human body to the city can produce bigger influence, economic development and social stability have also been produced negative effect to a certain degree, how improving the disposal situation of current clinical waste, the harm of elimination medical waste treatment process, is urgent problem.

Three, summary of the invention:

The objective of the invention is to disclose a kind of medical refuse burning technology and system equipment thereof, this invention is applicable to the processing of all kinds of clinical wastes.

The present invention is achieved in that a kind of medical refuse burning technology, technological process process: feeding mechanism, incinerator, waste heat boiler, quench tower, flue gas purification system etc., it is characterized in that: described feeding mechanism, adopt Turnover Box guide rail hydraulic means, the Turnover Box of depositing clinical waste is transported to certain position, and clinical waste is poured in the chute in Turnover Box by this device, pass through turnover panel and pusher in the chute again, clinical waste is sent in the rotary kiln, topple over empty Turnover Box by the hydraulic means answer of overturning automatically, withdraw from then.Whole fill process is all carried out under the condition of the unmanned contact of sealing, and material seals from being fed to, pusher all adopts HYDRAULIC CONTROL SYSTEM.Described CIU adopts rotary kiln, fire grate and dual firing chamber's combined type incinerator, rotary kiln all has adaptability preferably to the kind and the calorific value of clinical waste, the setting of rotary kiln exit fire grate, the material that can effectively guarantee difficult to burn in the clinical waste produces slag in burning process hot burn decrement rate is minimum, realizes the minimizing of clinical waste; In rotary kiln and dual firing chamber, all arrange burner and combustion air, guarantee that clinical waste burns under desired temperature, guarantee that flue gas has to be not less than 2 seconds the time of staying more than set point of temperature (〉=850 ℃), toxic and harmful is thoroughly decomposed.Described flue gas purification system adopts quench tower, semi-dry desulphurization reactor and sack cleaner combined system, described quench tower can cool off flue gas in the extremely short time, avoid the temperature range of synthetic extremely toxic substance dioxin again, described semi-dry desulphurization reactor (half-dried extracting tower) is meant that sour gas in the incineration flue gas (mainly is HCl, SO x), contact with the lime slurry that sprays into therein, carry out the heat and mass reaction, the lime pulp-water is heated by flue gas and gasifies, and acidic gas in flue gas is attracted to the lime surface simultaneously, produces neutralization reaction with lime and generates solid-state salt.Described sack cleaner, the effective flue dust in the flue gas of place to go, the filtering material of cloth bag adopts PTFE surface filtration material, possess acidproof, alkaline-resisting, anti-hydrolysis, resistant to elevated temperatures characteristics, the continuous firing temperature can reach 240 ℃, during acidic gas concentration≤1000PPM, there is not any influence in filtrate.

A kind of medical refuse burning system equipment, comprise feeding mechanism, rotary kiln, fire grate and dual firing chamber's incinerator, waste heat boiler, quench tower, flue gas purification system, it is characterized in that: system equipment is formed an automation control system, the DCS that this robot control system(RCS) has been used Australian CIT MOX of company and Siemens SIMATIC S7-400 controls Distributed Control System automatically, is divided into feed system, CIU, bootstrap system, flue gas purification system in the robot control system(RCS).Described feed system comprises clinical waste Turnover Box, storage place, lift, feed space, horizontal conveyer A, tipple, charging aperture, chute, chute turnover panel, material-pulling device, flashboard and the rotary kiln that program connects successively.Described incinerator adopts rotary kiln, fire grate and dual firing chamber's combined type incinerator, is provided with light diesel fuel auxiliary combustion equipment and a wind snout in the rotary kiln, and dual firing chamber is provided with light diesel fuel burner and overfire air port.A quench tower, semi-dry desulphurization reactor and a tablecloth bag dust collector are set in the described flue gas purification system.Described feeding mechanism adopts medical waste charging overturn system.

Advantage of the present invention is: overturn automatically charging and whole burning process of Turnover Box all carries out under the condition of sealing, and no any situation generation that leaks prevents that effectively harmful substance and stench are to the pollution of operating environment on every side; Rotary kiln, fire grate and dual firing chamber's combined type incinerator all have adaptability preferably to the kind and the calorific value of clinical waste, the setting of rotary kiln exit fire grate, the hot burn decrement rate that can effectively guarantee the slag that firing-difficult matter matter produces in the clinical waste in burning process is minimum, realizes the minimizing that medical wastes incineration is handled; In rotary kiln and dual firing chamber, all arrange burner and combustion air, guarantee that clinical waste burns under desired temperature, guarantee that flue gas has to be not less than 2 seconds the time of staying more than set point of temperature (〉=850 ℃), toxic and harmful is thoroughly decomposed; Flue gas has effectively utilized waste heat through waste heat boiler, and chilling system has then been avoided the synthetic again of dioxin, and semidry method depickling and dust collecting process are then adopted in gas cleaning, make discharging satisfy the national legislation requirement.Resource, minimizing and the harmless treatment of clinical waste have finally been realized.

Four, description of drawings:

Fig. 1 is a medical refuse burning process chart of the present invention;

Fig. 2 is the FB(flow block) of feed system of the present invention;

Fig. 3 is the FB(flow block) of CIU of the present invention;

Fig. 4 is the FB(flow block) of bootstrap system of the present invention;

Fig. 5 is the FB(flow block) of flue gas purification system of the present invention;

Fig. 6 is a fuel system FB(flow block) of the present invention;

Fig. 7 is the compressed-air actuated FB(flow block) of the present invention.

Five, the specific embodiment:

With reference to the accompanying drawings 1, technological process of the present invention is as follows: feed system 1, and the clinical waste in the Turnover Box enters CIU by lift, feed arrangement, turnover panel, the material-pulling device of feed system; CIU 2, clinical waste along with rotary kiln upset, dry, catch fire, burn and after-flame in fire grate, the imperfect combustion flue gas that burning produces enters dual firing chamber and burns away, and guarantees that the flue gas that the high-temperature residence of flue gas more than 850 degree produced more than two seconds enters bootstrap system; Bootstrap system 3, high-temperature flue gas is by behind the capital equipment waste heat boiler of bootstrap system, flue-gas temperature reduces, recovery waste heat produces steam simultaneously, flue gas purification system 4, the capital equipment of flue gas purification system is quench tower, semi-dry desulphurization reactor and sack cleaner, and flue gas is removed through wherein sour gas, heavy metal, dioxin-like chemical and dust etc. after this system; Chimney 5, flue gas after being purified drains into atmosphere by air-introduced machine from chimney.

With reference to the accompanying drawings 2, feed system flow process of the present invention is as follows: the Turnover Box that (1) is equipped with clinical waste unloads from transport vehicle, and is transported to clinical waste and stores the place; (2) the clinical waste Turnover Box is sent to the lift bottom, arrives feed space under the effect of lift; (3) in feed space, Turnover Box is transported to horizontal conveyer A (horizontal conveyer A has position probing and positioner); (4) horizontal conveyer is transported to assigned address (being the charging aperture side) with the clinical waste Turnover Box, relies on the hydraulic pressure tipple with 135 ° of clinical waste Turnover Box upsets, and the clinical waste in the case enters chute by charging aperture under the gravity effect; (5) clinical waste that enters chute drops down onto the material-pulling device front end by the chute turnover panel, is admitted to into rotary kiln under the effect of material-pulling device; (6) Turnover Box that empties is sent by horizontal conveyer B, is transported to ground under the effect of lift; (7) Turnover Box on arrival ground is transported to the Turnover Box cleaning shop; (8) cleaning the back Turnover Box is transported between the storage of cleaning Turnover Box.

With reference to the accompanying drawings 3, incinerator of the present invention adopts rotary kiln, fire grate and dual firing chamber's combined type incinerator.

The CIU flow process: (1) clinical waste is pushed the rotary kiln head by material-pulling device; (2) the rotary kiln head is provided with light diesel fuel auxiliary combustion equipment and a wind snout, clinical waste is along with the rotation of rotary kiln is constantly rolled, fully mix with a wind, be dried rapidly and fire burns, clinical waste can rely on the calorific value of self fire burns, until burning, burn the flue gas that produces and enter dual firing chamber; (3) clinical waste that do not burn of part and the slag that burns in the rotary kiln drop down onto fire grate from the afterbody (outside is provided with cooling air port) of rotary kiln and burn away until burning, and the flue gas of generation enters dual firing chamber, and the slag that burns relies on gravity to drop down onto slag extractor; (4) be provided with light diesel fuel burner and overfire air port in the dual firing chamber, for preventing that clinical waste issuable stench in storing the place storage process from escaping, secondary wind extracts from storing the place, through entering dual firing chamber after the air heater heating, the fire grate blower fan is to the fire grate air feed, the flue gas that enters dual firing chamber is mixed rapidly by secondary wind and burns away, dual firing chamber needs quite high ignition temperature (〉=850 ℃) and be not less than 2 seconds gas residence time under this temperature, so that poisonous and harmful substance is decomposed in the flue gas, and the generation of control dioxin-like chemical.(5) flue gas of dual firing chamber's burning generation enters waste heat boiler.

Rotary kiln, fire grate and dual firing chamber's combined type incinerator have following suitable medical wastes incineration characteristics: (1) all has adaptability preferably to the kind and the calorific value of clinical waste; (2) in rotary kiln and dual firing chamber, all arrange burner and combustion air, guarantee that clinical waste burns under quite high temperature; (3) setting of rotary kiln exit fire grate can effectively reduce the hot burn decrement rate that medical wastes incineration produces slag, realizes the minimizing of MEDICAL WASTE TREATMENT; (4) can guarantee that flue gas has more than set point of temperature (〉=850 ℃) is not less than 2 seconds the time of staying, and poisonous and harmful substance is thoroughly decomposed.

The critical piece of rotary kiln comprises: kiln body and function steel plate rolls, the refractory material of acidproof, wear-resisting, the high temperature resistant and stress of anti-alternating temperature-changing of liner, kiln tail circumferential direction inside direction is established heat-resisting steel sheet and plate, kiln hood and kiln tail are established sealing device, rotary kiln Frequency Drive device, gear drive, kiln hood portion establishes charge door, burner opening, observation panel.

The critical piece of fire grate comprises: fire grate steelframe, ash bucket, push rod, sliding machine, pulley, adjustablely take turns, pulley, fire grate segment etc.Fire grate adopts hydraulic transmission to drive, and fire grate is in tilted layout, and the reciprocating motion of fire grate segment can constantly move forward clinical waste or slag on fire grate.

The critical piece of dual firing chamber comprises: cylindrical shell rolls with steel plate, and corrosion-resistant, the resistant to elevated temperatures refractory brick of liner is established temperature point, pressure-measuring-point, overfiren air port, burner opening, observation panel, and dual firing chamber establishes explosion proof door in the top.

Because the calorific value of clinical waste is higher, and incineration temperature must be more than 850 ℃, contain a large amount of waste heats in the flue gas of dual firing chamber's outlet, if effectively utilization can be reclaimed a large amount of heats, produce considerable economic.

With reference to the accompanying drawings 4, the present invention selects waste heat boiler for use, is arranged on the dual firing chamber rear portion, and the saturated vapor parameter of generation is: 204 ℃ of temperature, pressure 1.60Mpa.

The bootstrap system flow process: fume side, from the high-temperature flue gas that dual firing chamber comes out, enter the waste heat boiler that is furnished with a large amount of heating surfaces, after high-temperature flue gas and the heating surface heat exchange, flue-gas temperature reduces, and enters follow-up flue gas purification system; Working medium (steam or water) side, because heating surface absorbs a large amount of heats, saturation water in the waste heat boiler tedge is heated and is vaporized into saturated vapor, enter into drum along tedge, saturated vapor in the drum is introduced in gas-distributing cylinder, gas-distributing cylinder is divided into three parts with saturated vapor, part steam enters air heater, the heating auxiliary air, saturated vapor condenses into water and is fed in the oxygen-eliminating device after the heat exchange, and a part of steam is fed to condenser and carries out condensing heat-exchange, and the water that gets off that condenses also is fed in the oxygen-eliminating device, part steam is directly sent in the oxygen-eliminating device, as thermal de-aeration; Because there is certain working medium (steam or water) consumption in afterheat boiler system, need to replenish a part of water, moisturizing derives from phreatic water, must remove the Ca in the phreatic water earlier through demineralized water treatment device 2+, Mg 2+Ion is softening with it, by make-up pump soft water is sent in the oxygen-eliminating device then, the steam that in oxygen-eliminating device, comes from gas-distributing cylinder, air heater condensate water, condenser condensed and the soft water heating of make-up pump, thereby remove the oxygen that is dissolved in wherein, through being sent in the drum of waste heat boiler recycling as feedwater after the deoxygenation.

This waste heat boiler is single drum, and the Natural Circulation low-pressure boiler adopts a pattern of hanging combination, and drum is bearing on the steelframe, and membrane wall adopts hanging.Waste heat boiler is connected with one by two upright flues of radiation that flue is formed and drum is formed.Drum is arranged in radiation flue top.Framework adopts steel construction, and by the octave earthquake, set up defences in three class places.Drum inside adopts under water that orifice plate adds the corrugated sheet separator, and common downcomer, platform are the grid body panel.

The bootstrap system capital equipment is a waste heat boiler, also comprises oxygen-eliminating device, air heater, gas-distributing cylinder, condenser, demineralized water treatment device, softened water pump etc.

With reference to the accompanying drawings 5, the flue gas purification system that the present invention adopts is quench tower, semi-dry desulphurization reactor and sack cleaner.

The flue gas purification system flow process is as follows: (1) heat boiler outlet flue gas enters quench tower, in quench tower, high-temperature flue gas directly mixes with the water of process atomizing, water after the atomizing is evaporated rapidly, and mix with flue gas, make flue-gas temperature in 1 second, reduce to 200 ℃ by 500 ℃ rapidly, effectively avoid the synthetic again of dioxin-like chemical; (2) quench tower outlet flue gas enters semi-dry desulphurization reactor (half-dried extracting tower), and in half-dried extracting tower, flue gas mixes, contacts and reacts with the lime white of process atomizing, and acidic gas in flue gas is removed; (3) half-dried extracting tower outlet flue gas sprays active carbon in flue before entering sack cleaner, and (the clinical waste mid-boiling point is lower than the heavy metal of ignition temperature, is evaporated in combustion process in the flue gas to the heavy metal in the flue gas; The heavy metal that boiling point is higher than ignition temperature then remains in the lime-ash) and dioxin-like chemical adsorb, it is removed from flue gas; (4) flue gas enters sack cleaner, in sack cleaner, the particle that exists in the flue gas (react back material, the unreacted lime that generates, be adsorbed with the active carbon of heavy metal and dioxin-like chemical etc. as dust, lime and sour gas) is tackled by filter bag, deashing operation with filter bag, come off from filter bag in the lump, discharge with the form of flying dust; (5) sack cleaner outlet flue gas under the effect of air-introduced machine from smoke stack emission to atmosphere.

The critical piece of quench tower comprises: cylindrical shell (steel plate rolls, inner lining refractory), and atomizing lance, temperature point, auxiliary facility comprises water supply system, compressed-air supply system etc.

The critical piece of half-dried extracting tower comprises: cylindrical shell (rolling) with steel plate, and rotary sprayer, temperature point, and corollary system such as lime white preparation vessel, lime slurry pump etc.

The critical piece of sack cleaner comprises: sack cleaner body, filter bag, bag cage, jetting deashing device, ash discharging gear, heating apparatus, bypass facility, control system etc.

With reference to the accompanying drawings 6,850 ℃ operating mode appears being lower than in burning process in order to prevent clinical waste, and the present invention adopts the auxiliary combustion backup means, is provided with that fuel system is auxiliary burns.The fuel system capital equipment is: light oil jar, light oil pump, domestic oil tank and rotary kiln burner, dual firing chamber's burner.

The flow process of fuel system: after light diesel fuel enters plant area by transport vehicle, light diesel fuel is delivered in the light oil jar, light diesel fuel in the light oil jar is promoted to domestic oil tank by the light oil pump, light diesel fuel in the domestic oil tank relies on the gravity effect to enter rotary kiln burner and dual firing chamber's burner respectively, when the clinical waste calorific value is low, can be undertaken combustion-supportingly by opening two burners, make the flue gas that burn to produce stop 2 seconds more than 850 ℃ more than the time, reach the relevant environmental protection standard of country.The integrated pattern of burner, unnecessary light diesel fuel is back in the domestic oil tank by return duct.

Because system's gas equipment is more, compressed air system is set supplies with.With reference to the accompanying drawings 7, after air is compressed by air compressor, enter air accumulator by surge tank, filter, drying machine, filter successively, surge tank, air accumulator are in order to guarantee the stable of compressed air supply gas pressure, drying machine can be removed the moisture in the compressed air, and filter is in order to remove the particle in the compressed air.The compressed air that comes out from air accumulator is assigned to process equipments such as semi-dry desulphurization reactor, quench tower, deduster, and each uses the gas instrument.

The compressed air system capital equipment is: air compressor, surge tank, air accumulator, filter, drying machine.

Automation control is the important means of medical wastes incineration treatment plant operation control; reach requirement on environmental protection in order to ensure burning disposal process stabilizing, economical operation and strictness, robot control system(RCS) of the present invention has adopted the DCS of Australian CIT MOX of company and Siemens SIMATIC S7-400 to control Distributed Control System automatically.

The DCS control system can be divided into enterprise management level, system's operation layer, key-course and four levels of on-site signal processing layer from top to bottom.The real time data of enterprise management level in can acquisition control system; System's operation layer is finished the real-time monitoring to production process; System's key-course is mainly finished the integrated treatment of various signals; The on-site signal processing layer, the processing of all I/O that the employing fieldbus is realized.

Technology controlling and process mainly comprises four aspects: the control of (1) feed system; (2) control of CIU; (3) control of bootstrap system; (4) control of flue gas purification system.

The control of feed system comprises: (1) is provided with inductive switch on horizontal conveyer, the particular location of induction Turnover Box; (2) the control hydraulic means is handled control to switching mechanism; (3) chute top is provided with camera, by the industrial television in the control room, monitors clinical waste situation in the chute; (4) the chain control of turnover panel opening and closing; (5) control of material-pulling device.

The control of CIU comprises: the control of the velocity of rotation of (1) rotary kiln; (2) temperature point is established at the dual firing chamber top, monitors combustion position; (3) pressure-measuring-point is established in the dual firing chamber exit, the control combustion chamber draft; (4) flame monitoring apparatus is set.

The control of bootstrap system comprises: the monitoring and the control of (1) boiler drum water level; (2) monitoring of drum pressure and control; (3) measurement of steam flow and control; (4) monitoring of heat boiler outlet temperature.

The control of flue gas purification system comprises: (1) quench tower inlet, outlet temperature control; (2) control of quench tower injection flow rate; (3) temperature control is established in half-dried extracting tower outlet; (4) control of lime slurry straying quatity; (5) temperature control is established in the sack cleaner import; (6) sack cleaner deashing control device; (7) liquid level control of lime white preparation system etc.

Claims (9)

1. medical refuse burning technology, the high temperature incineration that is used for all kinds of clinical wastes is handled, technological process process: feeding mechanism, incinerator, waste heat boiler, quench tower, flue gas purification system, it is characterized in that: described feeding mechanism adopts the charging of overturning automatically of the Turnover Box of depositing rubbish, incinerator adopts rotary kiln, fire grate and dual firing chamber's combined type incinerator, the waste heat boiler recovery waste heat produces steam, high-temperature flue gas is by quench tower, and process semi-dry desulphurization reactor and sack cleaner gas cleaning processing back qualified discharge.
2. medical refuse burning technology according to claim 1 is characterized in that: described feeding mechanism adopts whole fill process all to carry out expecting that from charging, envelope pusher and fire grate all adopt the Turnover Box guide rail hydraulic means of HYDRAULIC CONTROL SYSTEM under the condition of the unmanned contact of sealing.
3. medical refuse burning technology according to claim 1 and 2, it is characterized in that: described incinerator adopts rotary kiln, fire grate and dual firing chamber's combined type incinerator, rotary kiln is preceding, dual firing chamber after, fire grate is following, all arrange burner and combustion air in rotary kiln and dual firing chamber, flue gas has more than set point of temperature (〉=850 ℃) and is not less than 2 seconds the time of staying, thoroughly decomposes toxic and harmful.
4. medical refuse burning technology according to claim 1, it is characterized in that: described flue gas purification system quench tower, semi-dry desulphurization reactor and sack cleaner combined system, prevent the synthetic again quenching apparatus of dioxin except that having in the system, also have lime white feeding mechanism, chilled(cooling) water supply (CWS) system and flying dust conveying, stocking system, described semi-dry desulphurization reactor is with main sour gas HCl, SO in the incineration flue gas xContact with the lime slurry that sprays in the semi-dry desulphurization reactor, carry out the heat and mass reaction, the lime pulp-water is heated by flue gas and gasifies, pernicious gas small part in the flue gas is attracted to the lime surface simultaneously, and the overwhelming majority produces neutralization reaction with lime and generates solid-state salt.
5. medical refuse burning technology according to claim 4 is characterized in that: the filtering material of described sack cleaner adopts acidproof, alkaline-resisting, anti-hydrolysis, resistant to elevated temperatures PTFE surface filtration material.
6. medical refuse burning system equipment by any process application in the claim 1~5, comprise feeding mechanism, rotary kiln, fire grate and dual firing chamber's incinerator, waste heat boiler, quench tower, flue gas purification system, it is characterized in that: system equipment is formed an automation control system, the DCS that this robot control system(RCS) has been used Australian CIT MOX of company and Siemens SIMATIC S7-400 controls Distributed Control System automatically, is divided into feed system, CIU, bootstrap system, flue gas purification system in the robot control system(RCS).
7. medical refuse burning system equipment according to claim 6 is characterized in that: described feed system comprises clinical waste Turnover Box, storage place, lift, feed space, horizontal conveyer A, tipple, charging aperture, chute, chute turnover panel, material-pulling device, flashboard and the rotary kiln that program connects successively.
8. medical refuse burning system equipment according to claim 6, it is characterized in that: described incinerator adopts rotary kiln, fire grate and dual firing chamber's combined type incinerator, be provided with light diesel fuel auxiliary combustion equipment and a wind snout in the rotary kiln, dual firing chamber is provided with light diesel fuel burner and overfire air port.
9. medical refuse burning system equipment according to claim 6 is characterized in that: a quench tower, semi-dry desulphurization reactor and a tablecloth bag dust collector are set in the described flue gas purification system.
CN 200610028655 2006-07-06 2006-07-06 Medical refuse incineration process and system equipment therefor CN1884912A (en)

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Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102168852A (en) * 2010-12-23 2011-08-31 北京机电院高技术股份有限公司 Method and device for reducing emission limits of nitrogen oxides in waste incineration flue gas
CN102644926A (en) * 2011-02-21 2012-08-22 上海电气自动化设计研究所有限公司 Loop control method of medical garbage combustion rotary kiln based on DCS (Distributed Control System)
CN102825056A (en) * 2012-07-23 2012-12-19 圣火科技(河南)有限责任公司 Medical waste treatment method with afterheat recovery heat accumulator
CN103363531A (en) * 2013-07-08 2013-10-23 上海灿州环境工程有限公司 Whole-set hazardous waste incinerator device
CN103557526A (en) * 2013-11-01 2014-02-05 上海灿州环境工程有限公司 Complete equipment of hazardous waste and medical waste incinerator and incineration method of hazardous waste and medical waste
CN103657343A (en) * 2012-09-03 2014-03-26 中国中化股份有限公司 Method and device for inhibiting generation of dioxin from incineration flue gas
CN104456576A (en) * 2014-12-08 2015-03-25 王威平 Melting incineration system and incineration process thereof
CN104501178A (en) * 2014-12-16 2015-04-08 江苏百茂源环保科技有限公司 Industrial hazardous waste incineration system
CN103923242B (en) * 2014-04-19 2015-04-08 商南天和泥浆有限公司 Hydrolyzed polyacrylonitrile ammonium salt production system
CN104879759A (en) * 2015-05-14 2015-09-02 无锡市工业废物安全处置有限公司 Recycling system of after heat from exhaust gas of industrial dangerous waste incineration disposal
CN105805763A (en) * 2016-03-14 2016-07-27 江正云 Medical waste incineration system
CN105805764A (en) * 2016-03-14 2016-07-27 江正云 Medical waste incineration technological method
CN105864799A (en) * 2016-05-27 2016-08-17 上海第升环保科技有限公司 Pyrolysis incineration waste heat recycling device
CN105889933A (en) * 2014-12-08 2016-08-24 赫拉(北京)环境保护技术有限公司 Garbage incinerating device and method for conducting deacidification in garbage incinerator
CN105972601A (en) * 2015-09-30 2016-09-28 上海源凡投资有限公司 Anaerobic rubbish decomposition technology
CN106949477A (en) * 2017-04-27 2017-07-14 六合峰(天津)科技股份有限公司 A kind of processing system of Biohazard Waste and its use technique
CN107511030A (en) * 2017-09-20 2017-12-26 新中天环保股份有限公司 A kind of dual firing chamber's formula exhaust treatment system
CN107655008A (en) * 2017-09-01 2018-02-02 佛山市南海绿电再生能源有限公司 A kind of flue gas processing method and system for reducing waste incineration Zhong content of dioxin
CN108151023A (en) * 2017-12-06 2018-06-12 启东市金阳光固废处置有限公司 Industrial waste high temperature incineration gas cleaning treatment process
CN108980847A (en) * 2018-05-31 2018-12-11 云南合续环境科技有限公司 A kind of rubbish charing burning treatment process
CN109631052A (en) * 2019-01-18 2019-04-16 南昌市医疗废物处置中心有限公司 A kind of steady and continuous pyrolytic incineration method of clinical waste
CN110369446A (en) * 2019-07-15 2019-10-25 浙江大学台州研究院 Pharmacy waste plasma gasification and melting processing system and method

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102168852A (en) * 2010-12-23 2011-08-31 北京机电院高技术股份有限公司 Method and device for reducing emission limits of nitrogen oxides in waste incineration flue gas
CN102644926A (en) * 2011-02-21 2012-08-22 上海电气自动化设计研究所有限公司 Loop control method of medical garbage combustion rotary kiln based on DCS (Distributed Control System)
CN102825056A (en) * 2012-07-23 2012-12-19 圣火科技(河南)有限责任公司 Medical waste treatment method with afterheat recovery heat accumulator
CN103657343B (en) * 2012-09-03 2016-02-03 中国中化股份有限公司 A kind ofly suppress the method and the device that produce dioxin in incineration flue gas
CN103657343A (en) * 2012-09-03 2014-03-26 中国中化股份有限公司 Method and device for inhibiting generation of dioxin from incineration flue gas
CN103363531B (en) * 2013-07-08 2015-09-16 上海灿州环境工程有限公司 A kind of dangerous waste incinerator complexes
CN103363531A (en) * 2013-07-08 2013-10-23 上海灿州环境工程有限公司 Whole-set hazardous waste incinerator device
CN103557526A (en) * 2013-11-01 2014-02-05 上海灿州环境工程有限公司 Complete equipment of hazardous waste and medical waste incinerator and incineration method of hazardous waste and medical waste
CN103557526B (en) * 2013-11-01 2016-08-10 上海灿州环境工程有限公司 Dangerous waste and medical waste incinerator complexes and incinerating method thereof
CN103923242B (en) * 2014-04-19 2015-04-08 商南天和泥浆有限公司 Hydrolyzed polyacrylonitrile ammonium salt production system
CN105889933A (en) * 2014-12-08 2016-08-24 赫拉(北京)环境保护技术有限公司 Garbage incinerating device and method for conducting deacidification in garbage incinerator
CN104456576A (en) * 2014-12-08 2015-03-25 王威平 Melting incineration system and incineration process thereof
CN104501178A (en) * 2014-12-16 2015-04-08 江苏百茂源环保科技有限公司 Industrial hazardous waste incineration system
CN104879759A (en) * 2015-05-14 2015-09-02 无锡市工业废物安全处置有限公司 Recycling system of after heat from exhaust gas of industrial dangerous waste incineration disposal
CN105972601A (en) * 2015-09-30 2016-09-28 上海源凡投资有限公司 Anaerobic rubbish decomposition technology
CN105805763A (en) * 2016-03-14 2016-07-27 江正云 Medical waste incineration system
CN105805764A (en) * 2016-03-14 2016-07-27 江正云 Medical waste incineration technological method
CN105864799A (en) * 2016-05-27 2016-08-17 上海第升环保科技有限公司 Pyrolysis incineration waste heat recycling device
CN106949477A (en) * 2017-04-27 2017-07-14 六合峰(天津)科技股份有限公司 A kind of processing system of Biohazard Waste and its use technique
CN107655008A (en) * 2017-09-01 2018-02-02 佛山市南海绿电再生能源有限公司 A kind of flue gas processing method and system for reducing waste incineration Zhong content of dioxin
CN107511030A (en) * 2017-09-20 2017-12-26 新中天环保股份有限公司 A kind of dual firing chamber's formula exhaust treatment system
CN108151023A (en) * 2017-12-06 2018-06-12 启东市金阳光固废处置有限公司 Industrial waste high temperature incineration gas cleaning treatment process
CN108980847A (en) * 2018-05-31 2018-12-11 云南合续环境科技有限公司 A kind of rubbish charing burning treatment process
CN108980847B (en) * 2018-05-31 2019-09-20 云南合续环境科技有限公司 A kind of rubbish charing burning treatment process
CN109631052A (en) * 2019-01-18 2019-04-16 南昌市医疗废物处置中心有限公司 A kind of steady and continuous pyrolytic incineration method of clinical waste
CN110369446A (en) * 2019-07-15 2019-10-25 浙江大学台州研究院 Pharmacy waste plasma gasification and melting processing system and method

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