CN100465513C - Dangerous waste staff whirl wind gasified melting system - Google Patents
Dangerous waste staff whirl wind gasified melting system Download PDFInfo
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- CN100465513C CN100465513C CNB2007100271319A CN200710027131A CN100465513C CN 100465513 C CN100465513 C CN 100465513C CN B2007100271319 A CNB2007100271319 A CN B2007100271319A CN 200710027131 A CN200710027131 A CN 200710027131A CN 100465513 C CN100465513 C CN 100465513C
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Abstract
The present invention relates to a hazardous rejected material cyclone gasification melting system. It includes a main combustion chamber and a secondary combustion chamber which are communicated mutually. Said main combustion chamber is a cyclone combustion chamber on which are set a hazardous rejected material inlet, an additive/fly ash/combustion-supporting fuel inlet, a combustion-supporting air inlet and a gas auxiliary fuel inlet. On the secondary combustion chamber a secondary air inlet, a slag-discharging pipe and a flue gas outlet are set, and in the front of said flue gas outlet an inertial separator is set. Said invention not only can incinerate the hazardous rejected material, but also can melt the ash slag produced by incinerating hazardous rejected material.
Description
Technical field
The present invention relates to environmental technology field, relate in particular to the incineration treatment technology of danger wastes.
Technical background
Danger wastes is meant dangerous judging standard and the refuse authentication method identification, that have hazard property of listing national hazardous waste register or national regulation in.Danger wastes has inflammability is arranged, corrosivity, reactivity, toxicity or infective characteristics, if do not carry out the processing of reasonable standard, will produce huge harm.For example: the bacterial virus that clinical waste carries has extremely strong infectiousness, and chemical waste then comprises multiple poisonous and hazardous organic matter, thereby must effectively handle disposal.
At present, China's hazardous waste be mainly derived from industrial production, year about 3,000 ten thousand tons of the generation of danger wastes accounts for 3%～5% of industrial solid castoff year generation.And mainly be distributed in chemical raw material and chemical manufacturing industry, extractive industry, ferrous metal smelting and prolong pressure processing industry, petroleum industry and industrial departments such as coking industry, papermaking and paper products manufacturing industry.China is a developing country, and along with rapid economic development, the output of danger wastes is increasing, of a great variety, character is complicated.But China's danger wastes is started late, and all there is deficiency in the aspects such as construction of laws and regulations on the management and processing mechanism, Processing Technology and processing disposal facility at present, and some danger wastes is unprocessed just directly to be entered in the natural environment.China does not set up discarded object minimum quantization management system so far yet, in recent years, and in Shenyang, ground such as Beijing, Jiangsu just begun to occur industrial hazard castoff burning treatment plant.At present only have a bazardous waste landfill yard (nineteen ninety-five builds up) that meets safety standard, but treating capacity only there are 20,000 tons in Shenzhen.Therefore, bazardous waste dispose and handle particularly thorny, problem is severe.
Traditional landfill and stacking way not only take a large amount of soils, and often cause a hidden trouble because deal with improperly.The incineration treatment technology of danger wastes can effectively destroy poisonous, harmful, the debirs in the discarded object, is to realize danger wastes minimizing, the most quick, innoxious otherwise effective technique.But traditional danger wastes processing method can produce a large amount of incineration residues.This comprises end slag and flying ash.This part incineration residue is owing to adsorbed the harmful substance that evaporates in a large amount of burning process, and its harmfulness is often bigger than incinerated matter itself.The melt process technology is considered to handle the prefered method of this part material.This method can effectively be reduced the volume of lime-ash, and is fixed in the molten mass inorganic pollution is permanent.Slag itself can also carry out the material utilization.The lime-ash that the hot plasma treatment technology can produce in the melt process process when handling discarded object in the existing offal treatment technology.Yet plasma carries out the major defect of waste disposal is with electric power as the energy financial cost height.In addition, compare with traditional waste disposal mode, plasma process has more process control parameters, thereby requires automaticity very high in process control.Therefore plasma is mainly used in the refuse that incinerator is difficult to handle, and comprises the waste gas that contains poisonous volatile ingredient of contaminated ceramic refuse, refractory metal, needs improvement etc.
Summary of the invention
The purpose of this invention is to provide a kind of simple in structure, easy to operate, operating cost is low, integrates that danger wastes burns, the danger wastes treating apparatus of ash melting.This device can be when burning danger wastes, the lime-ash that melting incinerating produces.
For achieving the above object, the present invention has taked following technical scheme:
Shown in Fig. 1,2,3,4, the present invention is provided with main chamber I and the II of dual firing chamber that communicates, main chamber I is a turbulence-type combustion chamber, which is provided with danger wastes charging aperture 1, additive/flying dust/combustion-supporting fuel inlet 2, combustion air inlet 3 and gas auxiliary fuel inlet 8, the II of dual firing chamber is provided with secondary wind inlet 4, slag scum pipe 5, exhanst gas outlet 6.
Additive/flying dust/combustion-supporting fuel inlet 2 import pipe diameters require to determine according to gasification/pyrolysis tolerance and main chamber I intake velocity; Main chamber I bottom is a conical section, and to improve combustion gas and pyrolysis/gasification lime-ash separative efficiency, its tapering can determine that preferred range of taper is 0 °～20 ° with reference to the design of cyclone separator in the prior art; Described combustion air inlet 3 and gas auxiliary fuel inlet 8 are positioned on additive/flying dust/combustion-supporting fuel inlet 2 sidewalls, form symmetric arrangement, so that form swirling flow in main chamber.Combustion air inlet 3 can be two of symmetric arrangement shown in Figure 2, also can only have one or have a plurality of according to actual needs.
Secondary combustion chamber II middle section is designed to rectangle, and its inclination angle changes between 0 °～45 °, the lime-ash of separating with homogeneous fusion main chamber I, and combustion gas is fully burnt, the II of dual firing chamber also can be designed to other shape according to actual needs; In the II of dual firing chamber, before the exhanst gas outlet 6 inertia separator 7 can be installed, the lime-ash that is used for further segregated combustion flue gas, described inertia separator 7 can be a folded plate type separator when dual firing chamber's II Cross section Design became rectangle, the flap spacing is determined according to the minimum lime-ash particle diameter of required separation, separates minimum grain size and generally gets 10 μ m; Also can one auxiliary burner be installed, be used for when playing stove, keeping slag-drip opening localized hyperthermia, fusion institute's calorific requirement is provided and makes the flow field that forms in the dual firing chamber as shown in Figure 5 as combustion preheater or when moving in dual firing chamber II end; Gas auxiliary fuel import pipe 8 diameters are determined jointly by auxiliary fuel consumption and fuel gas inlet speed; The centerline of critical pieces such as additive/secondary flying ash/combustion-supporting fuel inlet 2, main chamber I, the II of dual firing chamber composition and 5 slag scum pipes is on same cross section.
Operation principle of the present invention as shown in Figure 1, main chamber I is used for danger wastes gasification/pyrolysis and combustion, and will gasify/the pyrolysis lime-ash separates with combustion gas, the II of dual firing chamber is used for completing combustion, the fusion of lime-ash homogeneous of lime-ash carbon part and separates, pyrolysis/gasification gas is also in this combustion chamber high temperature burning, molten ash after the separation enters cooling formation water-cooled slag in the fluid-tight water by slag-drip opening along slag scum pipe 5, and high-temperature gas finally enters residual heat using device by exhanst gas outlet 6 by inertia separator 7 further separation lime-ash and utilizes waste heat.
The present invention can utilize discarded object self calorific value or auxiliary fuel gas pyrolysis/gasification danger wastes thing, fusion and separate the pyrolysis/gasification lime-ash.Danger wastes can be collected the back from charging aperture spray people, also can be directly and the logotype of danger wastes generation equipment.For making pyrolysis/gasification produce the high-temp combustion of combustion gas, realize the high-temperature fusion of pyrolysis/gasification lime-ash, can feed auxiliary fuel in main chamber, this auxiliary fuel can be gaseous fuel (natural gas, hydrogen etc.), liquid fuel (heavy oil, diesel oil etc.), solid fuel (coal dust, charcoal etc.) etc.The flying dust of collecting from the flue gas after-treatment device, and the CaO/SiO that is used to improve slag character on a small quantity
2Deng dropping into main chamber, burn together at main chamber/fusion.
Advantage of the present invention is:
1. adopt and be similar to the rotational flow separation main chamber of cyclone separator, and can install folded plate type final dusting device additional, improve separative efficiency, can adopt the follow-up fume treatment auxiliary of comparatively simplifying in dual firing chamber;
2. slag-drip opening is positioned at high temperature auxiliary burner flame below, can effectively prevent the slag-drip opening slagging scorification;
3. slag-drip opening is positioned at high-temperature flue gas and flows to the below, and the high-temperature flue gas that can effectively prevent to contain harmful substance such as heavy metal pollutes cooling water;
4. slag-drip opening can reduce the move distance of molten ash in stove near swirl flow combustion main burner below;
5. castoff burning and ash melting system are combined, and simple in structure, compact, be easy to amplify.
6. adopt the cyclone type air current composition, in less space, realize long flue gas residing time in furnace (〉 2s), thoroughly abolish harmful organic substance in the flue gas.
7. this system suitability is stronger, can be used for handling and have so that property gets danger wastes, as mineral waste oil, coating refuse, organic resin class refuse etc., under combustion-supporting fuel heating, also can be used for the not flammable danger wastes that gets of fusion, as incineration disposal residue, asbestos insulation waste material etc.
Description of drawings
Fig. 1 is a structural front view of the present invention
Fig. 2 is the A view of Fig. 1
Fig. 3 is the C-C view of Fig. 1
Fig. 4 is the B-B view of Fig. 1
Fig. 5 is that inner flue gas of the stove of the present invention flows to sketch
Fig. 6 is an embodiment of the invention workflow sketch
Description of reference numerals: 1 danger wastes charging aperture, 2 additives/flying dust/combustion-supporting fuel inlet, 3 combustion airs inlet, 4 secondary wind inlet, 5 slag scum pipes, 6 exhanst gas outlets, 7 inertia separators, 8 gas auxiliary fuels inlet, I main chamber, II dual firing chamber, A input discarded object, B discarded object hopper, C combustor, D additive or combustion-supporting fuel or danger wastes, the combustion-supporting fuel of E, F waste heat boiler, G air preheater, H are to smoke processing system, I dreg removing system
The specific embodiment
Present embodiment is provided with main chamber I and the II of dual firing chamber that communicates, main chamber I is provided with danger wastes charging aperture 1, additive/flying dust/combustion-supporting fuel inlet 2, combustion air inlet 3, the II of dual firing chamber is provided with secondary wind inlet 4, slag scum pipe 5, exhanst gas outlet 6, gas auxiliary fuel inlet 8, secondary wind 4 places that enter the mouth are provided with auxiliary burner in the II of dual firing chamber, are provided with 7 inertia separators before the exhanst gas outlet 6.
Additive/flying dust/combustion-supporting fuel inlet 2 import pipe diameters are 83mm; Main chamber I bottom is a conical section, and its tapering is 8 °; Combustion air inlet 3 is two of symmetric arrangement shown in Figure 2; Inertia separator 7 is a folded plate type, and the flap spacing is 60mm; Secondary combustion chamber II is designed to rectangle, and its inclination angle is 20 degree; Gas auxiliary fuel import pipe 8 diameters are 22mm; The centerline of critical pieces such as additive/secondary flying ash/combustion-supporting fuel inlet 2, main chamber I, the II of dual firing chamber composition and 5 slag scum pipes is on same cross section.
As shown in Figure 6, solid hazardous waste after fragmentation drops into and is stored in earlier discarded object hopper B from A, tangentially enter main chamber I from danger wastes charging aperture 1 with the speed about 10m/s with the part combustion air then, help fire-retardant air to be preheating to 200 ℃ by air preheater G earlier, then from combustion air inlet 3, tangentially enter main chamber I at twice with the speed of 10m/s, the assist gas fuel natural gas 8 same speed with 10m/s that enter the mouth from E along auxiliary fuel enter main chamber I, three kinds of gases tangential flowing in main chamber I mixed, and under 1300 ℃ of high temperature gasification, and combustion.The flying dust of collecting from the flue gas after-treatment device, and the CaO/SiO that is used to improve slag character on a small quantity
2Additive from D along additive/flying dust/combustion-supporting fuel inlet 2 drops into main chamber I, this part lime-ash is collected on the main chamber I internal face in main chamber I with the lime-ash that gasification produces under the centrifugal action, partial melting also flows downward along internal face and to enter the II of dual firing chamber, the flue gas that main chamber I burning produces is fully burning under the preheated air that feeds from secondary wind inlet 4, the molten ash that molten ash that inertia separator 7 is separated and main chamber I separate is fully fusion under auxiliary burner and high-temperature flue gas acting in conjunction, and flowing to slag-drip opening along the dual firing chamber's II lower wall surface that tilts, slag-drip opening local temperature under the common heating that is placed on auxiliary burner C and combustion product gases maintains about 1450 ℃.Molten ash is in this place's homogeneous fusion, 5 enters water-cooling groove and forms the water-cooled slag from slag-drip opening along scum pipe then.The water-cooled slag further carries out the material application after dreg removing system I separates from water.The high-temperature flue gas that burning produces enters waste heat boiler F from exhanst gas outlet 6 eliminatings and carries out UTILIZATION OF VESIDUAL HEAT IN.Flue gas enters flue gas purification system from H, finally enters atmosphere after treatment.
Claims (10)
1. dangerous waste staff whirl wind gasified melting system, it is characterized in that: be provided with the main chamber (I) and the dual firing chamber (II) that communicate, main chamber (I) is a turbulence-type combustion chamber, which is provided with danger wastes charging aperture (1), additive/flying dust/combustion-supporting fuel inlet (2), combustion air inlet (3) and gas auxiliary fuel inlet (8), dual firing chamber (II) is provided with secondary wind inlet (4), slag scum pipe (5), exhanst gas outlet (6).
2. dangerous waste staff whirl wind gasified melting system as claimed in claim 1 is characterized in that described combustion air inlet (3) and gas auxiliary fuel inlet (8) is positioned on additive/flying dust/combustion-supporting fuel inlet (2) sidewall, forms symmetric arrangement.
3. dangerous waste staff whirl wind gasified melting system as claimed in claim 1 is characterized in that main chamber (I) bottom is a conical section.
4. dangerous waste staff whirl wind gasified melting system as claimed in claim 3 is characterized in that the range of taper of main chamber (I) lower taper section is 0 °～20 °.
5. dangerous waste staff whirl wind gasified melting system as claimed in claim 1 is characterized in that dual firing chamber (II) cross section is a rectangle, and its inclination angle is between 5 °～45 °.
6. as the described dangerous waste staff whirl wind gasified melting system of one of claim 1 to 5, the centerline that it is characterized in that described additive/secondary flying ash/combustion-supporting fuel inlet (2), main chamber (I), dual firing chamber (II) and slag scum pipe (5) is on same cross section.
7. as the described dangerous waste staff whirl wind gasified melting system of one of claim 1 to 5, it is characterized in that the preceding inertia separator (7) that is provided with of exhanst gas outlet (6) in dual firing chamber (II).
8. dangerous waste staff whirl wind gasified melting system as claimed in claim 7 is characterized in that inertia separator (7) is the folded plate type separator.
9. as the described dangerous waste staff whirl wind gasified melting system of one of claim 1 to 5, it is characterized in that one auxiliary burner being installed in dual firing chamber (II) end.
10. dangerous waste staff whirl wind gasified melting system as claimed in claim 9 is characterized in that described auxiliary burner is installed in secondary wind inlet (4) and locates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100271319A CN100465513C (en) | 2007-03-13 | 2007-03-13 | Dangerous waste staff whirl wind gasified melting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100271319A CN100465513C (en) | 2007-03-13 | 2007-03-13 | Dangerous waste staff whirl wind gasified melting system |
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| Publication Number | Publication Date |
|---|---|
| CN101021322A CN101021322A (en) | 2007-08-22 |
| CN100465513C true CN100465513C (en) | 2009-03-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2007100271319A Expired - Fee Related CN100465513C (en) | 2007-03-13 | 2007-03-13 | Dangerous waste staff whirl wind gasified melting system |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106224967B (en) * | 2016-09-05 | 2018-06-19 | 重庆科技学院 | Stoker fired grate formula refuse gasification incineration system and dove-tail form ash collecting device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4332206A (en) * | 1980-05-09 | 1982-06-01 | The Boeing Company | Afterburner for combustion of starved-air combustor fuel gas containing suspended solid fuel and fly ash |
| US4424755A (en) * | 1982-09-30 | 1984-01-10 | Industronics, Inc. | Incineration system having cyclonic oxidation chamber |
| JPH07301410A (en) * | 1994-05-06 | 1995-11-14 | Yoshida Seisakusho:Kk | Incinerator |
| CN1673624A (en) * | 2005-03-07 | 2005-09-28 | 徐万禄 | Life refuse incinerator |
-
2007
- 2007-03-13 CN CNB2007100271319A patent/CN100465513C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4332206A (en) * | 1980-05-09 | 1982-06-01 | The Boeing Company | Afterburner for combustion of starved-air combustor fuel gas containing suspended solid fuel and fly ash |
| US4424755A (en) * | 1982-09-30 | 1984-01-10 | Industronics, Inc. | Incineration system having cyclonic oxidation chamber |
| JPH07301410A (en) * | 1994-05-06 | 1995-11-14 | Yoshida Seisakusho:Kk | Incinerator |
| CN1673624A (en) * | 2005-03-07 | 2005-09-28 | 徐万禄 | Life refuse incinerator |
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| CN101021322A (en) | 2007-08-22 |
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Granted publication date: 20090304 Termination date: 20140313 |