CN202030667U - Waste treatment equipment - Google Patents
Waste treatment equipment Download PDFInfo
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- CN202030667U CN202030667U CN2010205707726U CN201020570772U CN202030667U CN 202030667 U CN202030667 U CN 202030667U CN 2010205707726 U CN2010205707726 U CN 2010205707726U CN 201020570772 U CN201020570772 U CN 201020570772U CN 202030667 U CN202030667 U CN 202030667U
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Abstract
The utility model relates to waste treatment equipment which solves the technical problem of ensuring the running safety of cement manufacture equipment in the condition of conveying the thermal decomposition gases generated in a gasification furnace into a decomposition furnace and the like of the cement manufacture equipment while the carbon and the ash contents in the gases are kept intact. The adopted technical measure is that the waste treatment equipment is arranged nearby the cement manufacture equipment, and the waste treatment equipment comprises the gasification furnace in which the waste is gasified and thermally decomposed and a gas conveying channel which conveys the generated thermal decomposition gases into the decomposition furnace while the carbon and the ash contents in the gases are kept intact. The waste treatment equipment is set to limit the flow ratio of the thermal decomposition gases from the gasification furnace and the waste gas discharged form the decomposition furnace below the specified flow ratio so as to control the temperature variation of the decomposition furnace, so that the running stability of the cement manufacture equipment can be ensured.
Description
Technical field
The utility model relates in abutting connection with the cement making equipment setting, utilizes cement decomposing furnace wholesomely waste to be handled the offal treatment equipment of usefulness.
Background technology
In recent years, even in for example developing country, also along with growth in the living standard, also more and more need rubbish is carried out sanitary measure, its burning disposal amount is increasing also among prediction, but also there is the expense that general incinerator need be very big of building, needs the problem of very long duration.And the needs assessment incinerator, therefore needed long time and prepares near resident's public information the influence of surrounding environment before going into operation.And also exist in China and to bury the burying of ashes that incinerator takes place and handle an insufficient problem, to set up under the situation in new disposal site, the establishment that utilizes method again of the setting of grey melting furnace and ash etc. is a prerequisite.
On the other hand, cement industry is always in order to reduce the cement manufacturing cost, the trend that the part utilization that combustible waste is acted as a fuel is arranged, for example patent documentation 1 is disclosed such, and the document proposes effectively to utilize existing cement making equipment that waste is carried out sanitary measure.In this example, in vapourizing furnace, castoff heat is decomposed, from the thermolysis gas that takes place, separate carbon and ash content, then thermolysis gas is offered cement kiln (firing furnace), carbon and ash content are offered preheater.
That is to say, in above-mentioned prior art example, the act as a fuel part utilization of gas of the thermolysis gas that vapourizing furnace can be taken place, simultaneously with carbon and ash content as cement material utilization, but both must be separated, offer cement making equipment with other system, therefore have the numerous and diverse difficulty of system.
Again, usually the thermal value of rubbish is about 1000～3000 kcal/kg, compare normally used fuel in cement kiln (under the situation of using the matchmaker, inferior grade matchmaker's thermal value is 5000～7000 kcal/kg) low, therefore in the time will mixing use from the thermolysis gas of rubbish, temperature in the kiln is on the low side, thereby the unfavorable possibility of combustion expense is also arranged.
And the water vapour that comprises in the thermolysis gas from rubbish has detrimentally affect to the proterties of cement clinker, when thermolysis gas burns in cement kiln, has the possibility that focus generates dirt settling takes place.
To this, the present inventor develops thermolysis gas that vapourizing furnace is taken place and offers the technology of the decomposing furnace of cement making equipment or firing furnace (kiln) and at first applied for patent (patent documentation 2) with carbon and ash content.Because the temperature of decomposing furnace is lower than kiln, approximately is about 900 ℃, is utilized effectively so thermolysis gas that here provides and carbon act as a fuel, ash content also becomes the part of cement raw material.
Again, in decomposing furnace, feed, cement raw material is blown up,, be transported to preheater here with water vapour etc. while therefore the thermolysis gas that provides also burns and upwards blows as jet-stream wind from the high-temp waste gas in the kiln.Therefore, do not worry in kiln, to take place the problem of deterioration of cement clinker proterties and dirt settling.
Patent documentation 1: specially permit communique No. 3838951.
Patent documentation 2: the open CN101434461A of Chinese patent application.
The utility model content
But, even described thermolysis gas is offered decomposing furnace as top, if it is measured at most unfavorable condition as described below can take place.For example because certain fault, under the situation that gasifier operation stops, therefore also can stop from this supply,, may cause operation troubles even in decomposing furnace, increase the problem that the usage quantity of coal etc. also can produce undercharge to the thermolysis gas of decomposing furnace.
Again, waste also has very big-difference because of the different heat amount of its kind, and the thermal value fluctuation of its thermolysis gas is also very big, handles a kind difference of the waste of concentrating in the variant time, and its thermal value also has very cataclysm.Therefore, if it is many to offer the amount of thermolysis gas of decomposing furnace, then thermal value change that produces because of its burning also can cause the change of calciner temperature.
That is to say,, might hinder the steady running of cement making equipment if provide the amount of the thermolysis gas that acts as a fuel to increase to decomposing furnace.
In view of the problem of above-mentioned existence, the purpose of this utility model is, when the thermolysis gas that vapourizing furnace is taken place is keeping being transported in the cement making equipment under its carbon that contains and the intact situation of ash content, guarantees the stability of this cement making equipment operation.
To achieve these goals, the offal treatment equipment that contiguous cement making equipment of the present utility model is provided with possesses the vapourizing furnace that makes waste gasification generation thermolysis gas and will keep being transported under its carbon that contains and the intact situation of ash content the gas delivery channels of the cement decomposing furnace of described cement making equipment at the thermolysis gas that described vapourizing furnace takes place; Described offal treatment equipment is configured to make from the flow of the thermolysis gas of the described vapourizing furnace ratio with the flow of the waste gas of discharging from described decomposing furnace and is restricted to below the throughput ratio of regulation.For example, described offal treatment equipment possesses the e Foerderanlage of the waste input amount of adjusting described vapourizing furnace, so that the ratio of the flow of described thermolysis gas and the flow of the waste gas of discharging from described cement decomposing furnace is below the throughput ratio of described regulation; Wherein, described offal treatment equipment also possesses in the adjustable damper of the adjustable fan of rotating speed and aperture at least one to regulate the air feed rate, wherein, the waste input amount of described vapourizing furnace and air feed rate are according to the pressure adjustment of at least one side in described vapourizing furnace and the described cement decomposing furnace.
In having the offal treatment equipment of this spline structure, castoff heat decomposes when thermolysis gas takes place in vapourizing furnace, utilize gas delivery channels that this thermolysis gas is transported to cement decomposing furnace under its carbon that contains of maintenance and the intact situation of ash content, in decomposing furnace, burn.At this moment the heat that the burning of thermolysis gas and carbon takes place has bigger change because of the relation of the kind of waste etc., if but the ratio of the flow of the waste gas that the flow of thermolysis gas and decomposing furnace are discharged is limited to below the throughput ratio of regulation, then can suppress the temperature variation of decomposing furnace.
If because certain fault causes gasifier operation to stop, and the supply of thermolysis gas and carbon also stops,, also can keep the running status of decomposing furnace by the supply of increase coal etc. if its amount is little again.That is to say,, can realize the steady running of cement making equipment by the ratio of vapourizing furnace to the exhaust gas flow of flow with decomposing furnace of the thermolysis gas that decomposing furnace is carried is limited to below the specified flow amount ratio.
Specifically, the flow of thermolysis gas that will be by described gas delivery channels for example is defined as with respect to the ratio of the flow of the waste gas of discharging from described decomposing furnace, and the throughput ratio below 0.3 gets final product, if adjust the waste input amount that drops into vapourizing furnace like this, and vapourizing furnace is the vapourizing furnace of mobile laminar, then also can adjust the flow of fluidization air, suppress the generating capacity of thermolysis gas.For example drop into the waste input amount of vapourizing furnace and the flow of fluidization air and adjust, can be maintained at below the above-mentioned throughput ratio according to the size of the negative pressure of this vapourizing furnace and decomposing furnace.
Usually in the decomposing furnace of cement making equipment, bring out the formation negative pressure state such as waste gas in the kiln, here, if thermolysis gas flows into, then corresponding to this flow, negative pressure diminishes.Thereby, if bring out the size of negative pressure of the vapourizing furnace of thermolysis gas according to the negative pressure of this decomposing furnace, adjust the input amount of waste and the flow of fluidization air, then can control the generating capacity of thermolysis gas, the flow that flows into this decomposing furnace is maintained at below the prescribed value.
Again, if utilize the negative pressure of decomposing furnace to bring out thermolysis gas from vapourizing furnace like this, also can keep negative pressure state in gas delivery channels and vapourizing furnace, then thermolysis gas is not ideal situation to external leaks.In order to carry thermolysis gas like this, and will be as being maintained at negative pressure in the vapourizing furnace of carrying the source, often fan is set midway in gas delivery channels, but when in thermolysis gas, comprising carbon and ash content from waste, its part can be adhered to accumulation on the impeller of fan etc., cause the abrasion of impeller itself, might break down.
In order to prevent such trouble, also consider from thermolysis gas, to remove carbon and ash content, but need removal device for this reason, and, be unsuitable in the operation of back, utilizing once again because the temperature of carbon of removing and ash content is low.Again, the outlet of fan might be in malleation in the part, just in case such situation takes place, thermolysis gas might spray outside pipeline.
If this point is also considered, then pass through the flow of the thermolysis gas of gas delivery channels, with the ratio of the flow of the waste gas of discharging from decomposing furnace preferably for example below 0.2, so far, if making throughput ratio is smaller value, this compares the flows such as kiln waste gas that flow through decomposing furnace originally, the flow of the thermolysis gas that appends is quite few, therefore the negative pressure in the decomposing furnace can be maintained enough big state, can utilize this negative pressure inducing thermolysis gas, and vapourizing furnace also can be kept negative pressure state.
Thereby, gas delivery channels also can fan be set midway, do not worry that carbon and the ash content in the thermolysis gas adheres to, piles up thereon, cause the fan fault.Do not worry just in case the fan outlet becomes malleation the ejection of thermolysis gas yet.
,, mobile laminar type and the kiln formula of taking the low temperature gasification mode are arranged here, shaft type is arranged, if but adopt the low temperature gasification mode, the advantage that then has iron in the waste, aluminium etc. can not oxidized ground to be reclaimed as the high-temperature gasification mode as vapourizing furnace.Again, the method for the laminar that flows also has the advantage of facility compact than kiln formula reaction efficiency (gasification efficiency) height, therefore preferably adopts the vapourizing furnace of this mobile laminar.
If vapourizing furnace adopts the structure can supply with auxiliary fuel, even then under the situation that the low waste of thermal value is handled, also can be with the layer temperature maintenance of vapourizing furnace in the level of necessity.As such auxiliary fuel, specifically, can adopt micro fine carbon dust, this can drop into fluidised bed from the top.In this case,, then can follow the thermolysis gas stream to discharge from vapourizing furnace if the particle of micro fine carbon dust is meticulous, excessive as fruit granule on the other hand, then in fluidised bed, assemble to sink, might not can fully burning be made contributions.Because this situation, the median size of micro fine carbon dust is preferably about 0.1～3mm, promptly, vapourizing furnace forms can be the structure that the Powdered auxiliary fuel of 0.1～3mm is put into the fluidised bed in the described vapourizing furnace with median size.
Also have, auxiliary fuel is not limited to micro fine carbon dust, can also adopt for example damaged tire, plastics, wood chip, carbon, ulmification compound etc. in addition, so long as can be at the object of fluidised bed internal combustion, no matter its kind how.
Again can be in described gas delivery channels set jet apparatus midway to be blown into pressurized air.If do like this, also can remove the carbon and the ash content that adhere to, pile up on the wall of gas delivery channels.For be communicated with the gas introduction port of thermolysis gas being introduced decomposing furnace with gas delivery channels, also, make the with respect to the horizontal plane downward-sloping setting of this gas introduction port in order to suppress adhering to, piling up of carbon and ash content again.
And, even there is not decomposing furnace in the cement making equipment, the high-temp waste gas that comes from firing furnace flows under the situation of cement preheater, as mentioned above, the flow of the thermolysis gas of the stove of autopneumatolysis in the future is limited to below the throughput ratio of regulation with respect to the ratio of the flow of the waste gas of preheater discharge, negative pressure in the preheater can be maintained at fully big state with this,, and can make vapourizing furnace remain in negative pressure state by means of this negative pressure-induced thermolysis gas.
The invention provides the offal treatment equipment that another contiguous cement making equipment is provided with, possess the vapourizing furnace that makes waste gasification generation thermolysis gas and will under contained carbon of maintenance and the intact situation of ash content, be transported to the gas delivery channels of the preheater of described cement making equipment at thermolysis gas that vapourizing furnace takes place; Wherein, described offal treatment equipment is configured to utilize the negative pressure in the described preheater to carry described thermolysis gas to this preheater by described gas delivery channels, and the ratio of the exhaust gas flow that the flow and the preheater of this thermolysis gas are discharged is limited to below the throughput ratio of regulation.
As previously discussed,, make waste gasification with vapourizing furnace if adopt the utility model, with the thermolysis gas that takes place under carbon that keeps containing and the intact situation of ash content to the conveyings such as decomposing furnace of cement making equipment, use can act as a fuel it.At this moment, the proportional limit that makes the flow of thermolysis gas and wait the exhaust gas flow that comes from decomposing furnace can suppress the temperature variation of decomposing furnace with this below the throughput ratio of regulation, the stability in the time of can guaranteeing the cement making equipment operation.And utilize the negative pressure transportation thermolysis gas of decomposing furnace etc., also can will keep negative pressure state in the vapourizing furnace.
Description of drawings
Fig. 1 is the offal treatment equipment of the utility model the 1st example and the system diagram of cement making equipment.
Fig. 2 A is the enlarged view from the decomposing furnace of the above-mentioned cement making equipment of rotary kiln unilateral observation.
Fig. 2 B is the figure suitable with Fig. 2 A of the decomposing furnace of variation.
Fig. 3 A is the graphic representation of an example of the change of the gas volume that takes place in the vapourizing furnace of expression.
Fig. 3 B is the graphic representation of an example of the pressure variation in the expression decomposing furnace.
Fig. 3 C is the graphic representation of the analog result of the pressure variation in the expression vapourizing furnace.
Fig. 4 is the graphic representation of the analog result of the ratio of expression thermolysis gas flow and kiln exhaust gas flow and the relation between the pressure in the vapourizing furnace.
Fig. 5 A is the graphic representation of the mutual relationship between the throughput ratio of expression thermolysis gas and the total exhaust gas flow ratio from decomposing furnace.
Fig. 5 B is the graphic representation of the throughput ratio and the mutual relationship between the ratio of the calorific value of coal in the decomposing furnace of expression thermolysis gas.
Fig. 6 is the figure suitable with Fig. 1 that water cooler waste gas flows into the 2nd example of decomposing furnace.
Fig. 7 is the figure suitable with Fig. 1 that possesses the variation of the decomposing furnace with rotation decomposition chamber and mixing section.
Fig. 8 has cyclic eel-like figure portion midway perisporium, nearby introduces the figure suitable with Fig. 1 of the variation of the air that reignition uses to it.
Fig. 9 is the figure suitable with Fig. 1 with variation of decomposing furnace.
Nomenclature:
100 offal treatment equipment;
1 vapourizing furnace;
6 gas feed line (gas delivery channels);
The 6a jet apparatus;
The feedway of 7 micro fine carbon dusts;
200 cement making equipments;
10 suspension preheaters;
20 decomposing furnaces;
27 gas introduction ports;
40 air quenching water coolers (clinker cooler).
Embodiment
With reference to the accompanying drawings ideal example of the present utility model is described.Fig. 1 is the offal treatment equipment 100 of the 1st example and the overall system diagram that is adjacent the cement making equipment 200 of setting.The offal treatment equipment 100 of left side expression makes castoff heat decompose in vapourizing furnace 1 among the figure, the gas (thermolysis gas) that takes place is used in mixed firing in the firing process of cement.The amount of this thermolysis gas is for example 2～30,000 Nm
3About/h, than the exhausted air quantity of the cement making equipment shown in the figure 200 (300,000 Nm for example
3/ h) much less, so offal treatment equipment 100 can add hardly existing cement mill and is arranged near it with revising.
-offal treatment equipment-
The waste of in offal treatment equipment 100, collecting the general waste that family for example comes, the trade waste that comprises plastic waste etc. and comprising flammable object.These wastes ship by land conveying etc., are dropped into the interior hopper 2a of groove 2, utilize not shown crusher to carry out fragmentation.The broken like this waste utilization crane of crossing 3 is transported to by dropping into the e Foerderanlage 4 that hopper and travelling belt etc. constitute, and delivers to vapourizing furnace 1 by means of the action of this e Foerderanlage 4.
The conveying belt of e Foerderanlage 4 is spiral conveyers for example, by changing its working speed, can adjust the waste input amount that time per unit drops into vapourizing furnace 1.By means of this, can suppress the state of temperature of vapourizing furnace 1 and the generating capacity of thermolysis gas with the adjustment of fluidization air flow quantity described below.
That is to say that as an example, vapourizing furnace 1 is the vapourizing furnace of mobile laminar, the layer (fluidised bed) of the mobile sand (flow media) that the bottom in stove forms is by means of air flowingization.The fluidization air that is sent to fluidised bed utilizes groove 2 sucking-offs of electric blowing machine 5 from waste in legend, be provided for vapourizing furnace 1.Therefore remain in negative pressure in the groove 2 of waste, unusual stink is not easy to leak into the outside.In that 1 air feed path 5a is provided with the adjustable damper of aperture (not shown) midway from fan 5 to vapourizing furnace,, can control the air feed rate with good response characteristic by means of this again.
And can change the rotating speed of above-mentioned fan 5 and adjust the aperture of damper, adjust the flow of fluidization air with this.For example, if increase the flow of fluidization air, the input amount of described waste is increased, then the layer temperature of vapourizing furnace 1 keeps certain and generating capacity increase thermolysis gas.The fluidised bed temperature of vapourizing furnace 1 is generally about 500～600 ℃ (minimum also have more than 450 ℃).In this pyritous fluidised bed, waste disperses under the husky effect of flowing on one side, on one side thermolysis, the part burning of waste also promotes thermolysis.
General waste thermal value is approximately about 1000～3000 kcal/kg, therefore the one partial combustion can be with the temperature maintenance of fluidised bed in proper temperature, but, relation because of the waste kind, if little (for example being lower than 1000 kcal/kg) the so-called low-grade waste of its thermal value, then the temperature of fluidised bed is low.Therefore, the vapourizing furnace 1(concrete structure of this example is not shown) near e Foerderanlage 4 micro fine carbon dust feedway 7 is set, in vapourizing furnace 1, to drop into for example micro fine carbon dust from the waste input port as auxiliary fuel.
Utilizing this feedway 7 is about 0.1～3mm from the median size of the micro fine carbon dust of last direction fluidised bed input.When the particle diameter of micro fine carbon dust is 0.1mm, according to calculating, its final velocity is about 0.9m/s, and is lower slightly than the flow velocity (the void tower flow velocity of gas benchmark) of thermolysis gas that rises in vapourizing furnace 1 and air, therefore its major part is dispersed, to the not contribution of burning of fluidised bed.
On the other hand,, then in fluidised bed, sink soon, probably contribution is not arranged very much burning if the micro fine carbon dust particle diameter is excessive.The fluidised bed internal combustion needed time of the micro fine carbon dust of particle diameter 3.0mm about 500 ℃ is about tens of times of the particulate of particle diameter 0.1mm, for the burning in the layer is had contribution, must guarantee the residence time of particle in layer.Here, the minimal flow speed of the micro fine carbon dust of particle diameter 3.0mm is about 1.8m/s according to calculating, and is identical with the void tower flow velocity of the air benchmark of fluidised bed, if therefore median size at 3.0mm with next no problem.
Therefore, provide micro fine carbon dust as required, can be with the temperature maintenance of fluidised bed in suitable scope, the waste that is dropped into can effectively decompose gasification.This thermolysis gas is discharged from the top of vapourizing furnace 1, by means of gas feed line 6(gas delivery channels) be transported to cement making equipment 200.In thermolysis gas, constitute small-particle as the carbon of unburnt ingredient and ash content and swimming, be transferred with thermolysis gas.Flow in the vapourizing furnace 1 of laminar, waste flowed husky flow pulverize, so the particle diameter of carbon and ash content diminishes easily, this is favourable for preventing that it from adhering to, piling up.
In this example, from the gas of vapourizing furnace 1 negative pressure transportation of utilizing decomposing furnace 20 as described below, so also keep negative pressure in the vapourizing furnace 1, thermolysis gas can be to external leaks.Thermolysis gas is owing to utilizing the negative pressure transportation of decomposing furnace 20, so fan is not set in gas feed line 6.Therefore do not worry that the carbon and the ash content that adhere to, pile up in the thermolysis gas on the impeller etc. of fan cause fault.
But on the inner-walls of duct face of gas feed line 6, As time goes on have and adhere to, pile up carbon and the grey situation generation that grades, therefore the increase of meeting build-up of pressure loss is so in this example, set a plurality of jet apparatus 6a at the interval to stop at more than the regulation of gas feed line 6.Utilize this jet apparatus 6a, the pressurized air that not shown compressor is provided intermittently is blown in the pipeline, carbon and the ash content of piling up can be blown away.Also have, the damper of open and close type also is set midway, can when the operation of offal treatment equipment 100 is stopped, damper cut out in gas feed line 6.
With respect to like this thermolysis gas of waste being discharged to gas feed line 6 from the top of vapourizing furnace 1, the not combustionmaterial that comprises as the tinsel of the residue after the thermolysis in the vapourizing furnace 1 falls with the husky lower end from vapourizing furnace 1 of flowing by the husky lower floor of flowing.That is to say that the residue of waste utilizes fluidised bed to carry out so-called proportion separation.Like this sand of discharging from vapourizing furnace 1 and not combustionmaterial utilize not shown conveyings such as travelling belt, the utilization figure isolating sand of sorting equipment outward returns vapourizing furnace 1.On the other hand, utilize sorting unit never to select metal ingredient in the combustionmaterial, remaining not combustionmaterial as cement raw material.
-cement making equipment-
Above-mentioned suspension preheater 10 has the multistage swirler 11 that is arranged side by side at above-below direction.Swirler 11 is respectively while utilizing eddy flow to carry cement raw material to carry out heat exchange with the high-temp waste gas that is blown into from subordinate.This exhaust flow is as described below, by rising in the decomposing furnace 20, is provided for the swirler 11 of next stage from the high-temp waste gas (being designated hereinafter simply as " kiln waste gas ") of rotary kiln 30.Kiln waste gas rises step by step by swirler as shown in phantom in FIG., arrives the swirler 11 of upper level, flows out to waste line 50 from this.
As shown in the figure, the jumbo induction fan 52 of inducing kiln waste gas that its past chimney 51 is sent is set at waste line 50, in the more last side of this induction fan 52, be the upstream side of exhaust flow, get involved that for example boiler of gas cooler 53(being set) and precipitron 54.Induction fan 52 guides large quantity of exhaust gas by suspension preheater 10 and decomposing furnace 20 from rotary kiln 30, also forms negative pressure simultaneously as mentioned above in decomposing furnace 20, therefore has the function of inducing thermolysis gas from vapourizing furnace 1.
On the other hand, in each swirler 11 of suspension preheater 10, after cement raw material and high temperature kiln waste gas carried out heat exchange as mentioned above, shown in solid line among the figure, landing was moved to next stage swirler 11 downwards.From the swirler 11 of upper level during in regular turn step by step by a plurality of swirler 11, cement raw material obtains abundant preheating like this, and one-level swirler 11 provides to decomposing furnace 20 above next stage.
Decomposing furnace 20 is arranged at the kiln rear portion of rotary kiln 30 with extending at above-below direction, connecting probably in its lower end is the lower pipeline 21 of L font, be connected again with between the rotary kiln 30, connecting probably in decomposing furnace 20 upper ends on the other hand is the upper pipe 22 of L font, is connected again with between the swirler 11 of the next stage of suspension preheater 10.Among Fig. 2 A, can see from rotary kiln 30 sides, decomposing furnace 20 bottoms be provided with respectively the such auxiliary fuel of micro fine carbon dust supplying opening 26, introduce from the gas introduction port 27 of the thermolysis gas of above-mentioned vapourizing furnace 1 and the air introducing port 25 of introducing usefulness as the air that makes its burning usefulness from the high temperature cooling waste gas (air) of air quenching water cooler 40.
In legend, all with respect to the horizontal plane downward-sloping setting of air introducing port 25 and gas introduction port 27 at Fig. 2 A, is represented respectively as the black and white arrow, and the air and the thermolysis gas of burning usefulness flow into downwards.These thermolysis gases and combustion air utilize the vacuum suction in the decomposing furnace 20, change a kind of view, utilize kiln waste gas to also have induction fan 52 to induce simultaneously exactly, also have, as an example, also can shown in Fig. 2 B, gas introduction port 27 be connected in air introducing port 25 midway, on one side with the air mixed of thermolysis gas, Yi Bian it is flowed in the decomposing furnace 20 with burning usefulness.
Kiln waste gas flows into decomposing furnace 20 lower ends by lower pipeline 21, forms jet flow shown in gray arrow among Fig. 2 A, the 2B, upwards blows along last lower axis 20a.Then, when described thermolysis gas and combustion air flowed in this decomposing furnace 20 downwards, these thermolysis air and airflow did not follow the kiln exhaust flow by decomposing furnace 20, and burn with time enough in this decomposing furnace.
On the other hand, 28 cement raw materials that drop into follow the jet flow of aforesaid kiln waste gas upwards to blow from the cement input port, are heated to about 900 ℃ when rising in by decomposing furnace 20, and the decarbonation reaction takes place 80～90% of lime composition.Then, be sent to the next stage swirler 11 of suspension preheater 10 by upper pipe 22 from the topmost of decomposing furnace 20.Here, kiln waste gas separates with cement raw material, moves to upper level swirler 11, and on the other hand, cement raw material falls the inlet that arrives rotary kiln 30 from the lower end of swirler 11.
This cement burned material is subjected to the cold wind quenching in air quenching water cooler 40, form granular cement clinker.And although diagram and detailed description are omitted, after cement clinker was stored in the grog warehouse, interpolation gypsum etc. carried out the composition adjustment, is fine powder (finishing step) through grinding then.On the other hand, from burned material, obtain heat and be elevated to water cooler waste gas about 800 ℃, as mentioned above, offer decomposing furnace 20 as the air of burning usefulness.That is to say, reclaim used heat the combustion air in the decomposing furnace 20 is heated up, seek to improve thermo-efficiency with this.
On the basis of aforesaid basic structure, also in the cement making equipment 200 of this example,, bypass line 60 is set in order to prevent to concentrate by chlorine component in suspension preheater 10 and the decomposing furnace 20 circulation time gases and alkali composition.That is to say, as this example in cement making equipment during the thermolysis gas of multifuel combustion waste, the chlorine component that originally in waste, comprises and alkali composition influence under chlorine component and alkali constituent concentration in the cement clinker tendency that uprises is arranged, also have the trouble of adhering to.
Therefore, in illustrated cement making equipment 200, utilize the bypass line 60 of the bottom (or lower pipeline 21) that is connected in decomposing furnace 20 that the part of gas is extracted out, after with water cooler 60 coolings, be sent to swirler 62(classifier) with the dust classification.Utilize 63 pairs of water coolers 61 of fan to send cold wind, below the fusing point of muriate etc., chlorine component or alkali composition in the gas of extraction are separated as solid (dust) by the quenching of gases that will extract out.
In swirler 62 dust in the gas of extracting out is classified as meal and micro mist then, the meal that comprises chlorine and alkali composition hardly falls from the lower end of swirler 62, and the reflux pipeline 60a that omits expression by means of a part returns decomposing furnace 20.On the other hand, micro mist that chlorine component and alkali constituent concentration are high and the downstream side pipeline 60b that bleeds and be discharged to bypass line 60 together that extracts out from swirler 62 are captured by precipitron 54.
Also have, in Fig. 1, the downstream side pipeline 60b that expresses bypass line 60 is connected in waste line 50 midway, shared induction fan 52, gas cooler 53 and the precipitron 54 that kiln waste gas is sent to chimney 51 usefulness, but induction fan, gas cooler and the precipitron that is specifically designed to bypass line 60 is set in the physical device, makes it be independent of waste line 50.
The throughput ratio of-thermolysis gas-
As mentioned above, in the waste reduction and disposal equipment 100 of this example, utilize the negative pressure of in cement making equipment 200, inducing kiln waste gas to use, from vapourizing furnace 1, be guided out thermolysis gas, utilize gas delivery line 6 to be transported to decomposing furnace 20.That is to say, in decomposing furnace 20, utilize induction fan 52 to induce kiln waste gas, form negative pressure state, if the flow of these waste gas is abundant, even then less with its relative populations thermolysis gas inflow also can be kept enough big negative pressure.
In this example, the exhausted air quantity of cement making equipment 200 is more than ten times of amount of the thermolysis gas of vapourizing furnace 1 generation, therefore the negative pressure state of decomposing furnace 20 is stable, therefore, also can utilize this stable negative pressure, conveying is not provided with fan from the thermolysis gas of vapourizing furnace 1 on gas delivery pipeline 6.Again, keep negative pressure in the vapourizing furnace 1, thermolysis gas does not leak into the outside yet.
But if the flow of thermolysis gas is many, then during the changes such as generating capacity of the thermolysis gas in the state of combustion of decomposing furnace 20 and the vapourizing furnace 1, vapourizing furnace 1 temporarily can not keep negative pressure state, and thermolysis gas also again may be to external leaks.Contriver of the present utility model increases the throughput ratio of thermolysis gas with respect to the kiln exhaust gas flow on one side interimly, utilizes the interior pressure change of vapourizing furnace that simplation validation causes thus 1 on one side.
Analog result when at first, Fig. 3 A～3C represents that as this example throughput ratio is decided to be 1/10 left and right sides.Fig. 3 A represents to consider to be sent to the change of air capacity of the fluidised bed of vapourizing furnace 1, the upset condition of the generating capacity of the thermolysis gas of the vapourizing furnace 1 when providing as external disturbance with it.The change of this gas volume is obtained by means of simulation.On the other hand, by means of the test of using actual cement decomposing furnace, measure the upset condition of its air pressure inside, the curve of Fig. 3 B is this amplitude of fluctuation to be expanded to 3 times result.
When simulating, shown in the image pattern 3C, obtain representing the curve of the gaseous tension change in the vapourizing furnace 1 according to the change of the change of above-mentioned vapourizing furnace gas generating capacity and decomposing furnace gaseous tension.Even as can be known this gaseous tension maximum also-below the 0.5kPa, throughput ratio is under 1/10 the state that leeway is arranged, even thermolysis gas generating capacity has change, also can keep suitable negative pressure state in the vapourizing furnace 1.
Below, Fig. 4 represents the throughput ratio of thermolysis gas flow and the relation between the pressure in the vapourizing furnace 1.In the relation curve, solid line is represented the pressure mean values in the vapourizing furnace 1 under a certain throughput ratio, and what consider change as mentioned above is the relation curve shown in the dotted line.Shown in the left end (throughput ratio=0) of relation curve, the decomposing furnace pressure employing-0.9kPa during the kiln isolated operation.Along with the increase of throughput ratio, the increase of instant heating decomposition gas generating capacity, the pressure in the vapourizing furnace 1 uprises, and becomes near normal atmosphere.
According to relation curve as can be known, if throughput ratio is about 0.1=1/10 as this example, then the pressure in the vapourizing furnace 1 be-0.5～-0.7kPa, when the throughput ratio of thermolysis gas is 0.2 left and right sides, as representing that with the relation curve shown in the solid line mean value of pressing in the vapourizing furnace probably is normal atmosphere (0).According to this situation, we can say, for the thermolysis gas delivery of its negative pressure autopneumatolysis in the future stove 1 decomposing furnace 20, the flow of thermolysis gas must be reduced to below 1/5 of flow of kiln waste gas to cement.
But above-mentioned simulation does not almost change to existing cement mill, is the simulation of carrying out for the situation that offal treatment equipment 100 is set in its vicinity.That is to say, usually in the cement mill, make the capacity of the induction fan 52 of discharging kiln waste gas that surplus about 10% be arranged, as mentioned above, the quantitative change of thermolysis gas stream is many, can not will be maintained at negative pressure in the vapourizing furnace 1, be in the supply by means of thermolysis gas, when making exhaust gas flow from decomposing furnace 20 increase by 10% left and right sides.
Here, the thermal value of general waste is 1000～3000 kcal/kg, and is lower than coal etc., so the thermal value of unit of fuel gas volume is also little.Therefore, if guarantee that in order to the burning that is used in the decomposing furnace 20 necessary thermal value is a prerequisite, if add the thermolysis gas that the low waste of thermal value comes, comprise that then the combustion gases of waste gas, instant heating decomposition gas and micro fine carbon dust from decomposing furnace 20 and the waste gas total flux that kiln waste gas adds together increase.
For example, the thermal value of coal is assumed to 5500 kcal/kg tentative calculations, adds that then total exhaust gas flow that thermolysis gas produces changes shown in the relation curve of Fig. 5 A.The transverse axis of this pipeline curve is the flow of thermolysis gas and the ratio of kiln exhaust gas flow, the longitudinal axis be total exhaust gas flow than, when promptly not adding thermolysis gas, be the increase ratio of total exhaust gas flow of the decomposing furnace 20 of benchmark.According to this figure, the thermolysis gas flow ratio is big more as can be known, and then the total exhaust gas flow from decomposing furnace 20 increases.
And for example solid line among the figure, dotted line, long and short dash line, in regular turn shown in, the thermal value of waste is low more, even same traffic ratio then, total exhaust gas flow also becomes many.Waste thermal value shown in each relation curve is respectively 2500 kcal/kg, 1400 kcal/kg, 1000 kcal/kg.Shown in the relation curve that dotted line is represented, if the thermal value of waste is 1400 kcal/kg, the throughput ratio of thermolysis gas is 0.2 o'clock, and total exhaust gas flow ratio is 1.1.With reference to Fig. 4, as mentioned above, when this ventilation system corresponding to the kiln waste gas in the cement factory has surplus about 10%, if throughput ratio is 0.2, then corresponding to being malleation in the vapourizing furnace 1.
Relative with it, if strengthen the ventilation system of the kiln waste gas in existing cement mill, or be provided with the surplus of ventilation system bigger when building the cement mill new, even then throughput ratio further increases, also can will be maintained at negative pressure in the vapourizing furnace 1, if the surplus about 20～25% is arranged, then according to the relation curve shown in the long and short dash line of above-mentioned Fig. 5 A, even when the thermal value of waste is quite low 1000 kcal/kg, throughput ratio is increased to about 0.3.
In the relation curve of Fig. 5 B below, the longitudinal axis is the ratio (calorific value of coal than) of the heat that produces of the burning of micro fine carbon dust in the heat that produces of the burning of decomposing furnace 20, the correlationship between the throughput ratio of investigation and transverse axis.Throughput ratio is high more, and then the shared ratio of thermolysis gas is high more in the fuel, so calorific value of coal is than step-down, and the thermal value of thermolysis gas is big more, and then its degree order of just complying with long and short dash line, dotted line, solid line progressively strengthens.
Can know that again when throughput ratio was high, the variation of the calorific value of coal ratio that the difference of thermolysis heat release in gas region causes was big more, the change of the temperature of combustion that causes owing to the fluctuation of thermolysis heat release in gas region is big.That is to say that the throughput ratio of thermolysis gas is high more, then the difference of waste kind etc. and the change of the thermal value that causes is reflected in the temperature of combustion of decomposing furnace 20, the temperature change of decomposing furnace 20 consumingly.
For this point, when watching three relation curves of Fig. 5 B, it is to be 0.3 o'clock in throughput ratio that the mean value of calorific value of coal ratio is about 0.8, and in other words, about 80% is the heat that the burning of micro fine carbon dust produces in the thermal value that the burning of thermolysis gas and micro fine carbon dust at that time produces.That is to say, if making the throughput ratio of thermolysis gas is below 0.3, the burning that then can make micro fine carbon dust is top dog for the temperature of decomposing furnace 20, even we can say that the fluctuation of thermal value of thermolysis gas is big, also can realize the steady running of cement making equipment 200.
In the present embodiment, working speed adjustment by control e Foerderanlage 4 is to the waste input amount of vapourizing furnace 1, making throughput ratio is about 1/10, utilizes simultaneously to the rotating speed control of fan 5 with to the control of regulating throttle opening and adjusts, the generating capacity of control thermolysis gas.As an example, also can measure the flow of the negative pressure of vapourizing furnace 1 and the thermolysis gas in the gas line of pipes 6 or measure the negative pressure of decomposing furnace 20 and exhaust gas flow etc., control according to this instrumentation value.
As mentioned above, in the offal treatment equipment 100 of the 1st example, in vapourizing furnace 1, the thermolysis gas that is taken place by waste is keeping contained carbon and ash content to keep under the intact situation, utilize line of pipes 6 to deliver to cement making equipment 200, be introduced into decomposing furnace 20.At this moment the flow of thermolysis gas is restricted to below the prescribed value with respect to the throughput ratio of kiln waste gas, therefore can suppress the temperature variation of decomposing furnace 20, can guarantee the operating safety of cement making equipment 200.
Again, negative pressure transportation thermolysis gas by means of decomposing furnace 20, can will be maintained at negative pressure state in gas delivery pipeline 6 and the vapourizing furnace 1, therefore it is also passable at gas delivery pipeline 6 fan not to be set, do not worry that carbon in the thermolysis gas and ash grade and adhere to that impeller that is piled up in fan etc. causes fault.Also can prevent the leakage of the thermolysis gas of vapourizing furnace 1.
If because certain fault causes vapourizing furnace 1 operation to stop, stopping to provide thermolysis gas and carbon, as long as the supply of auxiliary fuels such as corresponding increase micro fine carbon dust also can make decomposing furnace 20 operations unaffected to decomposing furnace 20.
Again, vapourizing furnace 1 adopts the vapourizing furnace of the laminar that flows, by means of husky the flowing of flowing waste is crushed to very thin degree, so the particle diameter of carbon in the thermolysis gas and ash content diminishes easily also, help suppressing adhering to, piling up of carbon in the gas delivery pipeline 6 and ash content.And by providing micro fine carbon dust,, also can fully improve the temperature of vapourizing furnace 1 even under the situation of handling low-grade waste as deposited fuel, this also helps suppressing, and carbon in the gas delivery pipeline 6 and ash grade adheres to, piles up.
And, at a plurality of jet apparatus 6a of setting of gas delivery pipeline 6, intermittently spray into pressurized air midway, by means of this, also can remove the carbon and the ash content of the inside that is deposited in gas delivery pipeline 6.And for the gas introduction port 27 that thermolysis gas is imported decomposing furnace 20, downward-sloping by making it, can suppress adhering to, piling up of carbon and dust.
-Di 2 examples-
Below with reference to Fig. 6 the offal treatment equipment and the cement making equipment of the utility model the 2nd example are described.This figure is equivalent to Fig. 1 of above-mentioned the 1st example.Also have, in this example, the suspension preheater 10 of cement making equipment 200 and the structure of decomposing furnace 20 are different from the 1st example, but for decomposing furnace 20, except not having air introducing port 25, identical with the 1st example, therefore be marked with identical symbol 20.The member of identical formation in addition also is marked with identical symbol and omits its explanation.
Again, in the figure, the part of the gas delivery pipeline 6 formula preheater 10 that is draped covers, therefore the diagram that sets device 6a is omitted, equally, also omit the diagram of bypass line 60 for convenience, but the same with the 1st example, set a plurality of jet apparatus 6a at gas delivery pipeline 6, possess bypass line 60, water cooler 61, swirler 62 etc. again.
And in the cement making equipment 200 of this 2nd example, suspension preheater 10 is divided into two systems, and each system possesses for example 5 grades of swirlers 11.In the system in figure left side, be blown into kiln waste gas from subordinate, except decomposing furnace 20 is not set, identical with the 1st example.On the other hand, in the system on figure right side, be provided with decomposing furnace 20, but what flow into not kiln waste gas here, but from the high temperature cooling waste gas of air quenching water cooler 40.
(among the figure shown in the long and short dash line) blown upward as jet flow in the same decomposing furnace 20 lower ends that flow into of kiln waste gas of cooling exhaust and the 1st example.This cooling exhaust mixes with thermolysis gas in being introduced into decomposing furnace 20, while its burning is upwards blown cement raw material, the swirler from upper pipe 22 to next stage.And rise by swirler 11 step by step, flow out to waste line 50 from the swirler 11 of upper level.
To decomposing furnace 20 bottoms (detailed icon omission), equally with the 1st example provide cement raw material from swirler 11, again, be provided with from vapourizing furnace 1 and introduce the gas introduction port 27 of thermolysis gas, but the introducing port 25 of the air that makes its burning usefulness is not set.Because as described above, the cooling exhaust that upwards blows by decomposing furnace 20 is different from kiln waste gas, contains a large amount of oxygen.
Except this point, the structure of decomposing furnace 20 is identical with the 1st example, and thermolysis gas is drawn towards in the decomposing furnace 20 from the gas introduction port 27 of downward-sloping setting with respect to the horizontal plane, mixes fully burning of back with the cooling exhaust that is blown up.Utilize this burning that the temperature of cooling exhaust is brought up to more than 900 ℃, by means of this, the calcining (decarbonation reaction) of the cement raw material that promotion is blown up.
And in the 2nd example, also be that the flow of thermolysis gas is suppressed in about 1/10 of the flow of cooling exhaust, even so its thermal value change because of kind of waste etc., the temperature variation of decomposing furnace 20 is also not too large.Again, the negative pressure that generates in decomposing furnace 20 of thermolysis gas utilization is carried.
Thereby, as described in this 2nd example, even cooling exhaust is flowed under the such situation of decomposing furnace 20, by being that cement making equipment 200 carries out safe operation below the throughput ratio that the thermolysis gas of vapourizing furnace 1 is limited to regulation with respect to the throughput ratio of the waste gas of this decomposing furnace 20, can only utilize the negative pressure transportation thermolysis gas of decomposing furnace 20 simultaneously.Therefore gas delivery pipeline 6 be not provided with fan also can, therefore needn't worry its fault.
-variation-
Fig. 7 and Fig. 8 represent the variation of the 1st example that the formation of decomposing furnace of cement making equipment 200 is different respectively.Again, Fig. 9 represents not have the situation of decomposing furnace.Therefore these variation are marked with identical symbol and omit its explanation for identical member except about all identical with above-mentioned the 1st example the structure of decomposing furnace.
At first, the decomposing furnace 70 of variation shown in Figure 7 is the same with the decomposing furnace of the 1st example, has the mixing section 71 at the kiln rear portion that is arranged at rotary kiln 30.And the rotation decomposition chamber 72 that is communicated with its underpart, set combustion unit 73 at this rotation decomposition chamber 72.The high-temperature fuel gas that burnings such as ejection coal, Sweet natural gas, heavy oil produce.In the rotation decomposition chamber 72 shown in the figure, import high temperature cooling device waste gas (air) from air quenching water cooler 40 as rotating fluid, one-level swirler 11 provides the cement raw material of preheating above next stage simultaneously.
This cement raw material moves to mixing section 71 while the calcining of accepting from the combustion gas of combustion unit 73, here, by means of the jet flow of the kiln waste gas that comes from the below cement raw material is upwards blown.That is to say, mix with the kiln exhaust flow, rise while both mix at mixing section 71, the gas-flow that comprises cement raw material.When upwards being blown along with upstream, cement raw material obtains fully calcined, carries to the swirler 11 of next stage by pipeline from the outlet of the topmost of mixing section 71.Also have,, or get final product between rotation decomposing furnace 72 and the mixing section 71 as long as the thermolysis gas of the stove of autopneumatolysis in the future 1 is introduced inlet from rotary kiln 30 to the outlet of mixing section 71.
On the other hand, the decomposing furnace 75 of variation shown in Figure 8 has the general structure identical with the 1st example, be set to the structure of direction extension up and down at the kiln rear portion of rotary kiln 30, form the cyclic eel-like figure 75a of portion at the substantial middle position of this above-below direction, be formed on the 75a of this eel-like figure portion also can be in decomposing furnace 75 structure of introducing air.
That is to say, the same with above-mentioned the 1st example, can be to the high temperature cooling waste gas from air quenching water cooler 40 of decomposing furnace 75 bottoms importing as rotating fluid, but the branch cross road that goes out by means of supply road bifurcated from this water cooler waste gas, the part of water cooler waste gas is introduced the above-mentioned eel-like figure 75a of portion, from it being imported in the decomposing furnace 75 at this introducing port that forms.The part of the water cooler waste gas of Dao Ruing is used as air that reignition uses and is provided in the jet flow by the kiln waste gas that rise in the decomposing furnace 75 like this.Also be the thermolysis gas of vapourizing furnace 1 to be introduced from the inlet of rotary kiln 30 to the outlet of decomposing furnace 75, get final product in this variation.
And, in variation shown in Figure 9, decomposing furnace is not set, be connected between the upper pipe 22 of lower pipeline 21 and the swirler 11 of the next stage that is connected in suspension preheater 10 of inlet of rotary kiln 30 and utilize increase in pipeline 29 to be connected.Provide the thermolysis gas of cement raw material and vapourizing furnace 1 respectively to this increase in pipeline 29, utilize the jet flow of kiln waste gas that it is upwards blown.The oxygen that comprises in thermolysis gas and the kiln waste gas reacts and burns in upcast 29 and suspension preheater 10.
-other examples-
Also have, the above-mentioned the 1st and the 2nd example with and the explanation of variation only be illustration, the utility model is not intended to limit its suitable object or its purposes.In for example above-mentioned each example etc., only utilize the negative pressure transportation thermolysis gas of cement decomposing furnace 20, but be not limited to this.Utilize this part thing of negative pressure transportation thermolysis gas of decomposing furnace not mean that the complementary additional fan of eliminating, and mean that not establishing fan also can utilize negative pressure that the thermolysis gas delivery is arrived decomposing furnace 20, can will be maintained at negative pressure state in the vapourizing furnace 1.
Again, if be the general waste more than 1000 kcal/kg for example as long as handle thermal value, its part just can be maintained at the fluidised bed of vapourizing furnace 1 suitable temperature by burning, therefore needn't as above-mentioned each example, provide auxiliary fuel, also can save for this reason and the micro fine carbon dust feedway 7 that is provided with.Equally, if only handle chloridely and contain the fewer waste of alkali, then also can in above-mentioned each example, save bypass line 60.
In above-mentioned each example etc., in that 20 gas delivery pipeline 6 sets jet apparatus 6a from vapourizing furnace 1 to decomposing furnace, blow away so that the carbon piled up and ash can be graded, but also it can be omitted again.
Also have, the structure for the vapourizing furnace 1 of offal treatment equipment 100 and the kiln (firing furnace) of cement making equipment 200 etc. also is not limited to above-mentioned each example.Vapourizing furnace 1 is not limited to the laminar that flows, and equally also can adopt the kiln formula of low temperature gasification mode, also can adopt the high-temperature gasification mode.Again, firing furnace also is not limited to rotary kiln 30.For example also can formula fluidised bed kiln.
Again, in above-mentioned each example, be envisioned for from the general waste of family and comprise the trade waste etc. of plastic waste as the waste that offers vapourizing furnace 1, but be not limited to this, other such animals and plants fuel wastes of fecaluria, sewage sludge of wooden wastes such as thinning timber (Thinned wood), wood chip or domestic animal also can be provided vapourizing furnace 1.
Industrial applicability
If employing the utility model, the thermolysis gas of the waste that vapourizing furnace can be taken place then, keeping under the contained carbon and the intact situation of ash content, carry to cement decomposing furnace, make its burning, therefore can effectively utilize existing cement making equipment, with the sanitary measure of low cost realization waste, industrial application value is very high.
Claims (9)
1. one kind is close to the offal treatment equipment that cement making equipment is provided with, and it is characterized in that possessing
Make waste gasification generation thermolysis gas vapourizing furnace and
To keep being transported under contained carbon and the intact situation of ash content the gas delivery channels of the cement decomposing furnace of described cement making equipment at the thermolysis gas that described vapourizing furnace takes place;
Wherein, described offal treatment equipment is configured to make from the flow of the thermolysis gas of the described vapourizing furnace ratio with the flow of the waste gas of discharging from described cement decomposing furnace and is restricted to below the throughput ratio of regulation.
2. offal treatment equipment according to claim 1, it is characterized in that, described offal treatment equipment possesses the e Foerderanlage of the waste input amount of adjusting described vapourizing furnace, so that the ratio of the flow of described thermolysis gas and the flow of the waste gas of discharging from described cement decomposing furnace is below the throughput ratio of described regulation.
3. offal treatment equipment according to claim 2, it is characterized in that, described offal treatment equipment also possesses in the adjustable damper of the adjustable fan of rotating speed and aperture at least one to regulate the air feed rate, wherein, the waste input amount of described vapourizing furnace and air feed rate are according to the pressure adjustment of at least one side in described vapourizing furnace and the described cement decomposing furnace.
4. according to each the described offal treatment equipment in the claim 1～3, it is characterized in that the throughput ratio of described regulation is 0.3.
5. offal treatment equipment according to claim 1 is characterized in that, described vapourizing furnace is the vapourizing furnace of mobile laminar.
6. offal treatment equipment according to claim 5 is characterized in that, described vapourizing furnace forms the structure that auxiliary fuel can be provided.
7. offal treatment equipment according to claim 6 is characterized in that, the Powdered auxiliary fuel that described vapourizing furnace formation can be 0.1～3mm with median size is put into the structure of the fluidised bed in the described vapourizing furnace.
8. offal treatment equipment according to claim 1 is characterized in that, sets jet apparatus to be blown into pressurized air midway in described gas delivery channels.
9. one kind is close to the offal treatment equipment that cement making equipment is provided with, and it is characterized in that possessing
Make waste gasification generation thermolysis gas vapourizing furnace and
To keep being transported under contained carbon and the intact situation of ash content the gas delivery channels of the preheater of described cement making equipment at thermolysis gas that vapourizing furnace takes place;
Wherein, described offal treatment equipment is configured to utilize the negative pressure in the described preheater to carry described thermolysis gas to this preheater by described gas delivery channels, and the ratio of the exhaust gas flow that the flow and the preheater of this thermolysis gas are discharged is limited to below the throughput ratio of regulation.
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| CN2010205707726U CN202030667U (en) | 2010-10-21 | 2010-10-21 | Waste treatment equipment |
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| CN2010205707726U CN202030667U (en) | 2010-10-21 | 2010-10-21 | Waste treatment equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012051958A1 (en) * | 2010-10-21 | 2012-04-26 | 川崎重工业株式会社 | Waste-processing apparatus |
| CN102452803A (en) * | 2010-10-21 | 2012-05-16 | 川崎重工业株式会社 | Waste treatment equipment |
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2010
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012051958A1 (en) * | 2010-10-21 | 2012-04-26 | 川崎重工业株式会社 | Waste-processing apparatus |
| CN102452803A (en) * | 2010-10-21 | 2012-05-16 | 川崎重工业株式会社 | Waste treatment equipment |
| CN102452803B (en) * | 2010-10-21 | 2015-05-06 | 川崎重工业株式会社 | Waste treatment equipment |
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