CN104006391A - Medical waste incinerator applied with oxygen-enriched combustion technology - Google Patents
Medical waste incinerator applied with oxygen-enriched combustion technology Download PDFInfo
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- CN104006391A CN104006391A CN201310062084.7A CN201310062084A CN104006391A CN 104006391 A CN104006391 A CN 104006391A CN 201310062084 A CN201310062084 A CN 201310062084A CN 104006391 A CN104006391 A CN 104006391A
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 161
- 239000001301 oxygen Substances 0.000 title claims abstract description 149
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 149
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 146
- 238000005516 engineering process Methods 0.000 title claims abstract description 29
- 239000002906 medical waste Substances 0.000 title claims abstract description 23
- 239000007789 gas Substances 0.000 claims abstract description 89
- 239000000779 smoke Substances 0.000 claims abstract description 17
- 238000012545 processing Methods 0.000 claims abstract description 5
- 239000003546 flue gas Substances 0.000 claims description 56
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 55
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 238000005422 blasting Methods 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 24
- 239000010813 municipal solid waste Substances 0.000 claims description 23
- 239000012528 membrane Substances 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 8
- 239000002737 fuel gas Substances 0.000 claims description 8
- 238000012856 packing Methods 0.000 claims description 8
- 230000005855 radiation Effects 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 3
- 230000017525 heat dissipation Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000007664 blowing Methods 0.000 claims 1
- 239000002912 waste gas Substances 0.000 abstract description 8
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000010304 firing Methods 0.000 description 23
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- KVGZZAHHUNAVKZ-UHFFFAOYSA-N 1,4-Dioxin Chemical compound O1C=COC=C1 KVGZZAHHUNAVKZ-UHFFFAOYSA-N 0.000 description 11
- 238000004056 waste incineration Methods 0.000 description 9
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- 150000002013 dioxins Chemical class 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
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- 208000024172 Cardiovascular disease Diseases 0.000 description 1
- 208000035473 Communicable disease Diseases 0.000 description 1
- 206010011409 Cross infection Diseases 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
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- 238000003723 Smelting Methods 0.000 description 1
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- 231100000086 high toxicity Toxicity 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
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- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- SYSQUGFVNFXIIT-UHFFFAOYSA-N n-[4-(1,3-benzoxazol-2-yl)phenyl]-4-nitrobenzenesulfonamide Chemical class C1=CC([N+](=O)[O-])=CC=C1S(=O)(=O)NC1=CC=C(C=2OC3=CC=CC=C3N=2)C=C1 SYSQUGFVNFXIIT-UHFFFAOYSA-N 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
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Classifications
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The invention discloses a medical waste incinerator applied with the oxygen-enriched combustion technology, and belongs to the field of environmental-friendly and energy-saving devices. The medical waste incinerator comprises an incinerator body, a second combustion chamber, a combustion air fan, an oxygen-enriched air supply system and a smoke tail processing system. Combustible components of medical waste are decomposed into combustible gas (smoke) in the incinerator body, and combustible gas enters a second combustion chamber body and flows downwards; the combustion air fan delivers combustion air into the incinerator body and the second combustion chamber body; the oxygen-enriched air supply system is used for generating oxygen-enriched gas and leading the oxygen-enriched gas into the second combustion chamber body; the smoke is contacted with the common combustion air and the oxygen-enriched gas which enters into the second combustion chamber respectively, turbulence and perturbation are formed in a main combustion zone by the smoke, and therefore the fact that waste gas burns out is facilitated. According to the medical waste incinerator applied with the oxygen-enriched combustion technology, the burning temperature of the waste gas of the incinerator is guaranteed to the maximum extent through oxygen-enriched equipment and a secondary air system, the second combustion chamber is facilitated to form turbulent flow, the staying time of the smoke in the second combustion chamber is prolonged, and therefore dioxin is decomposed.
Description
Technical field
The present invention relates to environment protecting power economizer technical field, be specifically related to a kind of incinerator for medical garbage of applying oxygen-enriched combustion technology.
Background technology
Clinical waste is a kind of contaminative, harmfulness, the great clinical waste of mortality.In the < < of country Hazardous Waste List > >, explicitly pointing out Biohazard Waste is No. 1 hazardous waste.The < < of country prevention and control of environmental pollution by solid wastes method > > is basic principle and the important measures as control hazardous waste that centrally dispose that advance hazardous waste.But in fact for various reasons, a considerable amount of clinical wastes do not obtain processing effectively in time.In clinical waste, contain a large amount of pathogenic bacteria, virus, radioactive substance and more chemical toxicant etc., there is extremely strong infectiousness, biological virus and corrosivity.The harmfulness of its virus of clinical waste, germ be common house refuse tens, even thousands of times of hundreds ofs.To the carelessness management of clinical waste, mishandling, not only pollute the environment, the pollution to water body, atmosphere, soil can be caused, and the popular of communicable disease may be caused, directly endanger people's health.Owing to carrying the enormous amount of germ, of a great variety in clinical waste, there is space infection, acute infection, cross infection and the features such as infection of hiding, its harmfulness is larger.
The main incinerator that adopts is processed clinical waste at present, incineration of waste technology is a kind of high-temperature process technology, the at high temperature oxidation of poisonous and harmful substance in refuse, pyrolysis and destroyed are a kind for the treatment of technologies of simultaneously realizing innoxious, minimizing, resource.Incinerator smoke mainly contains flue dust, sour gas (HCl, HF, SO
2), the hydro carbons of metallic compound (heavy metal), CO, trace and other organic compound be Ji dioxin etc.
In dangerous waste incineration process, because complicated thermal synthesis reaction can form bioxin, the compound relevant to two Evil compounds has three major types: many chlorodiphenyls diether compounds, includes 75 kinds of isomery objects; Many chlorodiphenyl ethers compound, claims again many chlorodiphenyls furans, includes 135 kinds of isomery objects; Polychlorinated biphenyls comprises 203 kinds of isomers.They are not volatile, not soluble in water, but are dissolved in grease, enter after human body, very easily retain, and easily make immune function of human body impaired, suffer from all kinds of cancers, cardiovascular and cerebrovascular disease etc.The generation of control bioxin that will be strict in therefore, incineration of waste technology.
It is more strict that national standard is compared to domestic waste incineration system requirements for medical waste incineration furnace system requirements.Country's < < dangerous waste incineration pollutes control criterion > > (GB18484-2001) and the concentrated incineration disposal engineering construction technical specification > > (HJ/T176-2005) of < < hazardous waste etc. and gathers as follows to hazardous Waste Incineration system requirements regulation:
(1) design of incinerator should guarantee that be not less than 10 years its service life;
(2) technical performance of refractory material that incinerator adopts should meet the requirement of incinerator combustion atmosphere, and quality should meet corresponding technical standard, can bear the alternating thermal stress of incinerator duty;
(3) should have suitable redundancy disposal ability, refuse inlet amount should be adjustable;
(4) incinerator should arrange explosion proof door or other blasting protection facilities; Behind combustion chamber, dump chimney should be set, and linkage be set it can only just can be started when accident or the state of emergency;
(5) must be equipped with and automatically control and monitoring system, show online operating condition and exhaust emissions parameter, and can automatic feedback, relevant main technologic parameters is automatically adjusted;
(6) guarantee that in incinerator outlet flue gas, oxygen content reaches > 6%-10% (dry flue gas);
(7) secondary combustion chamber, and guarantee flue gas secondary combustion chamber more than 1100 ℃ the time of staying be greater than 2s;
(8) the hot burn decrement rate of slag is answered ﹤ 5%;
(9), under normal running (operation) conditions, incinerator planted agent is in negative-pressure firing state;
(10) burn controlled condition and should meet the pertinent regulations in national GB18484-2001 < < dangerous waste incineration pollution control criterion > >.
In putting engineering construction technical specification > > everywhere, the concentrated burning of HJ177 < < hazardous waste explicitly calls for: 1. guarantee oxygen content 6-10%(dry flue gas in incinerator outlet flue gas), 2. dual firing chamber is set, and guarantee flue gas dual firing chamber more than 1100 ℃ the time of staying be greater than 2S.These requirements are mainly in order to guarantee decomposition and the elimination of pernicious gas in flue gas.In fact incinerator outlet oxygen content guarantees that 6-10% is above or be greater than this numerical value, is all difficult for guaranteeing dual firing chamber's temperature combustion air volume supplementary and control and improperly all can not guarantee that temperature is more than 1100 ℃ in Er dual firing chamber combustion process.Incinerator is fuel used is to take oil and clinical waste as main, incinerator in combustion process moment or in short-term in occur black smoke phenomenon be mainly material burn (being mainly free carbon) endless cause.The main cause that produces black smoke is anoxic in incinerator, and moment material burning is insufficient---be mainly in stove, combustion air oxygen is not enough.And if occurring that the black smoke stage replaces air-breathing with oxygen-enriched combustion-supporting, not only can improve flame temperature, increase combustion intensity, accelerate burning velocity, the utilization rate of fuel also can significantly improve, black smoke phenomenon just can be eliminated.The matching technique of oxygen-enriched combustion technology and medical waste incineration furnace dual firing chamber, is directly connected to the quality of important indicator and the treatment effect of clinical waste such as energy-conservation, volume increase, service life, environmental protection of incinerator equipment.
Summary of the invention
The object of the present invention is to provide a kind of incinerator for medical garbage of applying oxygen-enriched combustion technology, this device for incinerator, makes incineration firing process meet national respective specified oxygen-enriched combustion technology, and this device has the features such as energy-conserving and environment-protective simultaneously.
Technical scheme of the present invention is:
Apply an incinerator for medical garbage for oxygen-enriched combustion technology, comprise incinerator for medical garbage main body, the second combustion chamber main body, combustion fan, oxygen-enriched blasting system and flue gas afterbody treatment system; Wherein:
Incinerator for medical garbage main body: for filling and the burning of medical refuse burning thing; Medical waste is burnt herein for oxygen debt negative-pressure firing, and in medical waste, combustible component resolves into fuel gas (flue gas), and the flue that fuel gas (flue gas) arranges by incinerator main body top enters in the second combustion chamber main body and burns; More than smoke outlet flue-gas temperature >=850 of incinerator main body ℃.In incinerator main body, burn, take air-breathing as main, but can take if desired the local oxygen enrichment mode that increases to guarantee this specification requirement.
The second combustion chamber main body: the flue gas that exports out from incinerator main body enters in the second combustion chamber main body, in the second combustion chamber main body, ignition temperature is at 950 ℃ more than-1000 ℃, and bioxin decomposes after-flame herein; The second combustion chamber main body is cylinder-like structure, top arranges flue entrance, flue entrance place arranges wind-distributing pipe, flue gas is in wind-distributing pipe enters the second combustion chamber main body and flow downward, in the second combustion chamber main body, be also provided with that (flue-gas temperature is too low when flue gas enters the second combustion chamber from incinerator main body maybe can not burn time for the thermocouple of monitor temperature and igniter, need starting ignition device, the auxiliary second burning Indoor Combustion temperature that improves).
Combustion fan: send into combustion air respectively in incinerator for medical garbage main body and the second combustion chamber main body; Combustion fan connects incinerator lower body part by being provided with the pipeline of opening/shutting valve, can select whether in incinerator main body, send into combustion air according to actual conditions; Combustion fan connects the second combustion chamber main body by main air supply duct, combustion air is contrary flue gas flow direction in the second combustion chamber main body, rotation makes progress, along combustion chamber main body inner circle, also tangentially sends into clockwise combustion air, forms turbulent flow and disturbance with the flue gas that enters the second combustion chamber main body.
Oxygen-enriched blasting system: introduce in the second combustion chamber main body for generation of oxygen rich gas and by the oxygen rich gas of generation; Comprise oxygen-enriched blasting pipeline and embrane method oxygen generation system; Described embrane method oxygen generation system comprises oxygen-enriched membrane component, water ring vacuum pump, oxygen rich gas surge tank and the booster fan connecting successively, and the oxygen rich gas that embrane method oxygen generation system produces enters respectively in incinerator main body and secondary combustion chamber main body by the oxygen-enriched blasting pipeline connecting on booster fan; Oxygen-enriched blasting pipeline is when to the second combustion chamber main body air-supply, and its direction be contrary flue gas flow direction, rotation upwards, along combustion chamber inner circle counterclockwise-tangentially send into oxygen rich gas, with the flue gas formation turbulent flow and the disturbance that enter the second combustion chamber main body.
Oxygen enrichment control system: in the second combustion chamber main body of feeding back by the thermocouple being arranged in the second combustion chamber main body, ignition temperature is adjusted the quantity delivered of oxygen rich gas, thus the second burning Indoor Combustion temperature controlled.
Flue gas afterbody treatment system: the processing for tail gas that smoke combustion produces in the second combustion chamber main body, is connected in the second combustion chamber lower body part.
Described oxygen-enriched blasting pipeline is provided with oxygen rich gas electricity and adjusts valve, for regulating the oxygen rich gas flow flowing in the second combustion chamber.Described water ring vacuum pump is connected with heat radiation cooling device, for water ring vacuum pump is carried out to cooling heat dissipation.
In oxygen-enriched blasting system of the present invention: oxygen-enriched membrane component (membrane stack): according to technological project, use spot plane position to stack membrane module, can horizontal layout, also can upwards pile up.
Water ring vacuum pump: adopt vacuum drawn mode, will send into oxygen rich gas surge tank after the oxygen rich gas enrichment of membrane stack.
Oxygen rich gas surge tank: described oxygen rich gas surge tank comprises airtight tank body and packing layer, described packing layer is arranged at tank body middle part, and tank wall bottom arranges gas access, and side wall upper part arranges gas vent.Described tank diameter >=1m, tank body height >=2.5m.In the time of the enrichment of oxygen rich gas process water ring vacuum pump, oxygen rich gas water content is very high, from the gas access of oxygen rich gas surge tank, enter oxygen rich gas surge tank, because tank body Volume design is larger, the Speed Reduction of oxygen rich gas, oxygen rich gas removes the water in oxygen rich gas after by packing layer in addition, oxygen rich gas after dehydration enters booster fan from the gas vent of tank body, the water of separating is discharged (tank base is established outlet, and outlet connects the pipeline for draining) from the pipeline of tank base.
Booster fan: lower from oxygen rich gas surge tank oxygen rich gas pressure out, can not overcome the resistance in follow-up flow process, therefore by booster fan, undertaken after supercharging, after raising oxygen rich gas pressure, can enter in burner.
The design principle of the incinerator for medical garbage of the present invention's application oxygen-enriched combustion technology is as follows:
1, research shows that dioxins materials more than 850 ℃ can decompose completely, using under rich Combustion Technics part bar, makes especially dual firing chamber's technological temperature be strict controlled in more than 1100 ℃.The concentration of O2 is more than 6%, assurance can burning fume in main chamber (incinerator combustion chamber main body) and the indoor time of staying of second-time burning more than 2s, thereby make easily to give birth to into dioxins materials, can in burning, decompose completely.
2, the designed and dual firing chamber that manufactures, from helping the fuel gas that combustion grate is emitted to enter dual firing chamber, flue gas flows downward.And respectively oxygen rich gas and common combustion air are taked to spiral, reverse upwards air feed form.Two groups of wind and can form turbulent flow and disturbance by burning fume in stove, can make flue gas fully burn.
3, oxygen-enriched blasting system is divided into two groups of pipelines respectively to burning the air-supply of Zhu Luhe dual firing chamber.Burn main stove and be generally anoxic gasification, and combustion, but according to standard-required, " must guarantee that ignition temperature is more than 850 ℃, even during lower than 4.18 * 106J/kg, also need to guarantee that temperature is more than 750 ℃ at incinerated matter calorific value ".When the main stove of burning can not meet the demands under special circumstances, start oxygen enrichment air feed system and also can reach and meet standard-required.
4, dual firing chamber adds oxygen-enriched combustion-supporting, can improve dual firing chamber's ignition temperature, also can guarantee standard clause requirements such as " oxygen contents in dual firing chamber outlet flue gas must not lower than 6% ".The temperature that improves air-breathing and oxygen-enriched combustion-supporting wind at dual firing chamber's design combustion air heater, is conducive to waste gas burning, guarantees refuse, waste gas after-flame.
5, utilize booster fan to increase oxygen enrichment air intake pressure, guarantee to form disturbance between oxygen-enriched combustion-supporting wind and air-breathing air intake, and form flow-disturbing and turbulent flow in flue gas, prolong smoke is at residing time in furnace as far as possible.
6, funeral profession, waste incineration (comprising medical wastes incineration) are confirmed as China bioxin and reduce discharging and the key industry of controlling, and high-temp combustion is eliminate and reduce one of effective way of dioxin.The common calorific value of material that incinerator burns is lower, is difficult for guaranteeing that incinerator temperature is more than 850 ℃ in burning.Research shows, dioxin more than 820 ℃ can thoroughly decompose and be difficult for transforming and becoming.Oxygen-enriched combusting burning can improve incinerator ignition temperature, to thorough decomposition dioxin, can play an important role.
7, one combustion chamber (incinerator main body) all the time in anaerobic condition (going back oxygen atmosphere), C, the H of the oxidation atoms in combustion-supporting gas in waste gas is combined, Cu, AL, Fe etc. are difficult for oxidized, the build environment of dioxin a little less than.Combustible component resolves into fuel gas, and introduces dual firing chamber's burning, and dual firing chamber's temperature is more than 850 ℃, and gas residence time more than 2 seconds, has guaranteed the complete decomposition combustion of poisonous and hazardous organic gas, thereby has guaranteed the abundant decomposition of dioxin.Because dual firing chamber is gas combustion, avoided the carbon residue in flue gas to exist, weakened the build environment of dioxin.In dual firing chamber, temperature is up to more than 850 ℃, and flue gas stopped much larger than 2 seconds, all organic matters can be burnt; In dual firing chamber, internal cause does not have dead angle, therefore temperature is even, and organic matter that can residual harmful.
8, dioxin is in the not natural existence of nature, and mainly the activity by the mankind produces as processes such as burning, smelting, papermaking, Chemical Manufacture, and wherein the burning process such as rubbish and industrial waste is the topmost source of bioxin.The dioxin being produced by incinerator is high toxicity, high cumulative compound, can be in the enrichment of people's cylinder accumulation, and very harmful.He has high-melting-point, high boiling feature, and chemical property is very stable.But the decomposition rate of the higher ， bioxin of temperature is faster.In fact incinerator burning produce bioxin amount far above rubbish itself with amount.When ignition temperature surpasses 850 ℃, easily decompose.Control measure in burning process are improved Incineration circumstances, guarantee that stable, burning is fully to control the important means that bioxin predecessor produces.The effective method of control combustion operating mode is exactly so-called " 3T+E " theory.Be fire box temperature (Temperatue) at more than 850 ℃ (preferably more than 900 ℃), Shi dioxin decomposes completely; Guarantee that flue gas has enough time of staying more than 2s in stove, make combustible completing combustion; The Proper Design of optimization of combustion boiler, reasonable wind distribution, the turbulivity (Turbulence) of raising flue gas, improves heat transfer, mass transfer effect; Guarantee enough burner hearth air supply amounts (Excessair), excessive oxygen can guarantee abundant burning.Visible oxygen-enriched combustion-supporting method can effectively help and solve so-called " 3T+E " theory.
9, burn main combustion zone in anoxic reducing zone, temperature is controlled at 850 ℃ of left and right, and flue gas continues to be fed into the thorough oxidized decomposition of the indoor waste gas of second-time burning, and the indoor temperature of second-time burning is higher, conventionally far away higher than more than 850 ℃.Flue gas ， dioxins materials after secondary combustion chamber high-temp combustion is eliminated substantially, and research shows that ， bioxin clearance can reach 99.9999%.To sum up oxygen-enriched combusting effect is fairly obvious.
10, the technology of the present invention is applicable to the combustion system that incinerator, medical waste incineration furnace, funeral and interment cremator, slaughterhouse incinerator etc. are provided with dual firing chamber.
Advantage of the present invention and beneficial effect are as follows:
1, CIU has adopted in incinerator main body after pyrolysis, flue gas enters dual firing chamber's application oxygen enrichment technology makes waste gas completing combustion thorough, the exhaust gas volumn producing is less, the low phenomenon of temperature that CIU accidentally occurs can be effectively avoided in the application of oxygen-enriched combustion technology in addition, makes the particle burning in flue gas complete.
2, in prior art through water ring vacuum pump oxygen rich gas out, through water separator and gas buffer, carry out respectively the separated buffering with gas of carbonated drink successively, the designed oxygen rich gas surge tank of the present invention is realized the separated effect with cushioning of carbonated drink of oxygen rich gas simultaneously, that is: through water ring vacuum pump gas out with a certain amount of water, this part gas enters after oxygen rich gas surge tank, when flow reduces also by the moisture removal in gas.This design, than prior art, had both been saved floor space, saved again equipment manufacturing cost.
3, oxygen-enriched combustion technology can effectively guarantee ignition temperature in stove, to decomposing, suppress the generation of dioxin, will play irreplaceable effect.Testing data shows the thoroughly elimination under hot environment of pernicious gas-dioxin, and is difficult to synthesize again.Therefore utilize rich Combustion Technics in the present invention can effectively solve the difficult problem of environmental protection.
4, with oxygen-enriched combustion technology in the present invention, can effectively guarantee the possible trouble particle after-flame in flue gas.Use oxygen-enriched combusting equipment and secondary air system will guarantee to greatest extent incinerator waste gas burning temperature, be conducive to form the flow-disturbing of secondary combustion chamber, prolong smoke, in the secondary combustion chamber time of staying, is decomposed bioxin.
Accompanying drawing explanation
Fig. 1 is the incinerator for medical garbage structural representation of the present invention's application oxygen-enriched combustion technology.
Fig. 2 is the structural representation of oxygen-enriched blasting system in Fig. 1.
Fig. 3 is the second chamber structure schematic diagram in the present invention.
Fig. 4 is oxygen rich gas surge tank structural representation in the present invention.
Fig. 5 is A-A face generalized section in Fig. 3.
Fig. 6 is B-B face generalized section in Fig. 3.
Fig. 7 is C-C face generalized section in Fig. 3.
Wherein: 1-incinerator main body; 2-combustion fan; 3-oxygen-enriched blasting pipeline; 4-the second combustion chamber main body; The main air supply duct of 41-; 42-wind-distributing pipe; 43-igniter; 44-thermocouple; 5-embrane method oxygen generation system; 51-booster fan; 52-oxygen rich gas surge tank; 521-tank body; 522-packing layer; 523-gas vent; 524-gas access; 53-water ring vacuum pump; 54-oxygen-enriched membrane component; 55-heat radiation cooling device; 56-trench; 6-flue gas afterbody treatment system.
The specific embodiment
Below in conjunction with accompanying drawing in detail the present invention is described in detail.
As shown in Fig. 1-7, the incinerator for medical garbage of the present invention's application oxygen-enriched combustion technology comprises incinerator for medical garbage main body 1, the second combustion chamber main body 4, combustion fan 2, oxygen-enriched blasting system and flue gas afterbody treatment system 6; Wherein:
In medical waste, combustible component resolves into fuel gas (flue gas), and the flue that fuel gas (flue gas) arranges by incinerator main body 1 top enters the interior burning of the second combustion chamber main body 4; More than smoke outlet flue-gas temperature >=850 of incinerator main body 1 ℃.
The interior ignition temperature of the second combustion chamber main body 4 is at 950 ℃ more than-1000 ℃, and bioxin decomposes after-flame herein; The second combustion chamber main body 4 is cylinder-like structure, top arranges flue entrance, flue entrance place arranges wind-distributing pipe 42, flue gas is in wind-distributing pipe 42 enters the second combustion chamber main body 4 and flow downward, in the second combustion chamber main body 4, be also provided with that flue-gas temperature is too low when flue gas enters the second combustion chamber from incinerator main body maybe can not burn time for the thermocouple 44 of monitor temperature and igniter 43(, need starting ignition device, the auxiliary second burning Indoor Combustion temperature that improves), as shown in Figure 4, in figure, E place is connected with the two main air supply ducts in place in Fig. 3 respectively with F place.
Combustion fan 2 connects incinerator main body 1 bottom by being provided with the pipeline of opening/shutting valve, combustion fan 2 connects the second combustion chamber main body 4 by main air supply duct 41, combustion air is contrary flue gas flow direction in the second combustion chamber main body 4, rotation makes progress, along combustion chamber main body 4 inner circles, also tangentially sends into clockwise combustion air (Fig. 5), forms turbulent flow and disturbance with the flue gas that enters the second combustion chamber main body 4.
Oxygen-enriched blasting system is introduced in the second combustion chamber main body for generation of oxygen rich gas and by the oxygen rich gas of generation, and its structure as shown in Figure 2; Comprise oxygen-enriched blasting pipeline 3 and embrane method oxygen generation system 5; Described embrane method oxygen generation system 5 comprises oxygen-enriched membrane component 54, water ring vacuum pump 53, oxygen rich gas surge tank 52 and the booster fan 51 connecting successively, and the oxygen rich gas that embrane method oxygen generation system 5 produces enters respectively in incinerator main body 1 and secondary combustion chamber main body 4 by the oxygen-enriched blasting pipeline 3 connecting on booster fan 51; Oxygen-enriched blasting pipeline 3 is when to the second combustion chamber main body 4 air-supply, and its direction be contrary flue gas flow direction, rotation upwards, along combustion chamber inner circle counterclockwise-tangentially send into oxygen rich gas (Fig. 6), with the flue gas formation turbulent flow and the disturbance that enter the second combustion chamber main body 4.
Described oxygen rich gas surge tank 52 comprises airtight tank body 521 and packing layer 522, and described packing layer 522 is arranged at tank body 521 middle parts, and tank body 521 lower sidewall arrange gas access 524, and side wall upper part arranges gas vent 523.Described tank diameter >=1m, tank body height >=2.5m.
In the second combustion chamber main body that oxygen enrichment control system is fed back by the thermocouple 44 being arranged in the second combustion chamber main body 4, ignition temperature is adjusted the quantity delivered of oxygen rich gas, thereby controls the second burning Indoor Combustion temperature.
Flue gas afterbody treatment system 6 is connected in the second combustion chamber lower body part, for the processing of tail gas that smoke combustion produces in the second combustion chamber main body.
Described oxygen-enriched blasting pipeline 3 is provided with oxygen rich gas electricity and adjusts valve, for regulating the oxygen rich gas flow flowing in the second combustion chamber.Described water ring vacuum pump 53 is connected with heat radiation cooling device 55, for water ring vacuum pump 53 is carried out to cooling heat dissipation.
In oxygen-enriched blasting system of the present invention: oxygen-enriched membrane component (membrane stack): according to technological project, use spot plane position to stack membrane module, can horizontal layout, also can upwards pile up.
Water ring vacuum pump: adopt vacuum drawn mode, will send into oxygen rich gas surge tank after the oxygen rich gas enrichment of membrane stack.
Oxygen rich gas surge tank: in the time of the enrichment of oxygen rich gas process water ring vacuum pump, oxygen rich gas water content is very high, enters after oxygen rich gas surge tank buffering, and gas-water separation simultaneously gas velocity reduces, and the oxygen rich gas after dehydration enters booster fan.
Booster fan: oxygen rich gas surge tank oxygen rich gas pressure is out lower, can not overcome the resistance in follow-up flow process, is therefore undertaken after supercharging by booster fan, after raising oxygen rich gas pressure, can enter in burner.
Described heat radiation cooling device 55 enters trench 56 by valvular pipeline is installed by waste water, and oxygen rich gas surge tank 52 enters trench 56 by the pipeline of valve and tubing pump is installed by waste water, and the valve arranging on pipeline can regularly be opened waste discharge.
Claims (7)
1. an incinerator for medical garbage of applying oxygen-enriched combustion technology, is characterized in that: this incinerator comprises incinerator for medical garbage main body, the second combustion chamber main body, combustion fan, oxygen-enriched blasting system and flue gas afterbody treatment system; Wherein:
Incinerator for medical garbage main body: for filling and the burning of medical refuse burning thing, in medical waste, combustible component resolves into fuel gas (flue gas) herein, and the flue that fuel gas (flue gas) arranges by incinerator main body top enters in the second combustion chamber main body and burns;
The second combustion chamber main body: burn in the second combustion chamber main body from incinerator main body flue gas out, ignition temperature is at 950-1000 ℃; Described the second combustion chamber main body is cylinder-like structure, top arranges flue entrance, flue entrance place arranges wind-distributing pipe, and flue gas is in wind-distributing pipe enters the second combustion chamber main body and flow downward, and is provided with thermocouple and the igniter for monitor temperature in the second combustion chamber main body.
Combustion fan: send into combustion air respectively in incinerator main body and the second combustion chamber main body;
Oxygen-enriched blasting system: introduce in the second combustion chamber main body for generation of oxygen rich gas and by oxygen rich gas, comprise oxygen-enriched blasting pipeline and embrane method oxygen generation system; Described embrane method oxygen generation system comprises oxygen-enriched membrane component, water ring vacuum pump, oxygen rich gas surge tank and the booster fan connecting successively, and the oxygen rich gas that embrane method oxygen generation system produces enters respectively in incinerator main body and secondary combustion chamber main body by the oxygen-enriched blasting pipeline connecting on booster fan;
Flue gas afterbody treatment system: the processing for tail gas that smoke combustion produces in the second combustion chamber main body, is connected in the second combustion chamber lower body part.
2. the incinerator for medical garbage of application oxygen-enriched combustion technology according to claim 1, is characterized in that: described combustion fan connects incinerator lower body part by being provided with the pipeline of opening/shutting valve; Combustion fan connects the second combustion chamber main body by main air supply duct, combustion air is contrary flue gas flow direction in the second combustion chamber main body, rotation makes progress, along combustion chamber main body inner circle, also tangentially sends into clockwise combustion air, forms turbulent flow and disturbance with the flue gas that enters the second combustion chamber main body.
3. the incinerator for medical garbage of application oxygen-enriched combustion technology according to claim 1, it is characterized in that: described oxygen-enriched blasting pipeline is when blowing to the second combustion chamber main body, its direction is contrary flue gas flow direction, rotation upwards, along combustion chamber inner circle counterclockwise-tangentially send into oxygen rich gas, form turbulent flow and disturbance with the flue gas that enters the second combustion chamber main body.
4. the incinerator for medical garbage of application oxygen-enriched combustion technology according to claim 1, it is characterized in that: described incinerator for medical garbage also comprises oxygen enrichment control system, be to adjust the quantity delivered of oxygen rich gas by being arranged on ignition temperature in the second combustion chamber main body of thermocouple in the second combustion chamber main body feedback, thereby control the second burning Indoor Combustion temperature.
5. the incinerator for medical garbage of application oxygen-enriched combustion technology according to claim 1, it is characterized in that: described oxygen rich gas surge tank comprises airtight tank body and packing layer, described packing layer is arranged at tank body middle part, and tank wall bottom arranges gas access, and side wall upper part arranges gas vent; Described tank diameter >=1m, tank body height >=2.5m.
6. the incinerator for medical garbage of application oxygen-enriched combustion technology according to claim 1, is characterized in that: described oxygen-enriched blasting road is provided with oxygen rich gas electricity and adjusts valve, for regulating the oxygen rich gas flow flowing in the second combustion chamber.
7. the incinerator for medical garbage of application oxygen-enriched combustion technology according to claim 1, is characterized in that: described water ring vacuum pump is connected with heat radiation cooling device, for water ring vacuum pump is carried out to cooling heat dissipation.
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| CN109899804A (en) * | 2019-04-02 | 2019-06-18 | 上海多灵环保工程设备有限公司 | A kind of waste incinerator with banking combustion function |
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| CN112762459B (en) * | 2020-12-22 | 2023-05-23 | 无锡市阳泰环境科技有限公司 | Device and method for eliminating dioxin in fly ash |
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