CN104033905A - System for combustible waste co-processing in cement kiln with bypass exhaust and waste heat power generation - Google Patents
System for combustible waste co-processing in cement kiln with bypass exhaust and waste heat power generation Download PDFInfo
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- CN104033905A CN104033905A CN201410284453.1A CN201410284453A CN104033905A CN 104033905 A CN104033905 A CN 104033905A CN 201410284453 A CN201410284453 A CN 201410284453A CN 104033905 A CN104033905 A CN 104033905A
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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
- Y02E20/12—Heat utilisation in combustion or incineration of waste
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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Abstract
The invention relates to a system for combustible waste co-processing in cement kiln with bypass exhaust and waste heat power generation and aims to provide a system with high ability to process the combustible waste and guarantee production quality of the cement. The technical scheme includes that the system comprises a generating device, a kiln tail preheater, a kiln head waste heat boiler, a kiln tail waste heat boiler, a collecting device, an incinerator, a raw material vertical mill and a bypass exhaust device; the kiln head waste heat boiler and the kiln tail waste heat boiler are connected with the generating device, a gas inlet of the kiln head waste heat boiler is connected with a waste gas outlet of a clinker cooler, a waste gas outlet of the kiln tail preheater is connected with a gas inlet of the kiln tail waste heat boiler, and a discharging outlet of the kiln tail preheater is connected with a feeding inlet of a feed-end chamber of a rotary kiln; and a smoke outlet of the incinerator is connected to a decomposing boiler of the kiln tail preheater.
Description
Technical field
The present invention relates to a kind of combustible waste material system, specifically a kind of cement kiln associated treatment combustible waste material system.
Background technology
Combustible waste material refers to solid-state, the semisolid waste material that there are certain calorific value and can burn that the mankind produce producing, in consumption, life and other activities under certain condition, and (external definition is more extensive, the discarded object that animal activity produces also belongs to this type of), be exactly generally " rubbish " of calorific value.Combustible waste material mainly comprises domestic waste, banker stalk, mud, discarded plastics or rubber, damaged wood furniture, spoil, rotten food, human and animal excreta etc.
European Union is processing aspect the combustible waste materials such as domestic waste, mud, has several times and changes: just having started is to take landfill and burning as main, and the lime-ash after burning is also landfilled; In succession there are several refuse landfill penetrating fluid leakage accidents in the later stage nineties, so they have revised and increased substantially the antiseep standards and guidelines of landfill yard; Experienced like this 6～8 years, European Union finds that remedial measure cost that they take is too high and it is little to produce effects, and can not effect a radical cure the hidden danger of secondary pollution; Through introspecting cautiously and painfully and proving, 2007 so far, and moral, Ying Deng state have made new decision-making finally in succession, no longer newly-built combustible waste and city life garbage landfill and incinerator factory; The combustible waste of all new generations from now on and rubbish all will be taked other safer more economical methods, all instant disposal as much as possible, settle at one go, dissolve clean, do not stay future trouble, as far as possible few with or without landfill yard and incinerator, explore the aspects such as anaerobic composting, regenerable solid fuel manufacture, exploitation bio-fuel, simultaneously also rather good to the dissolve prospect of combustible waste of cement industry.
The present situation of domestic combustible waste material is, because the combustible waste material generations such as domestic city house refuse are large, determined that China's offal treatment must emphasize " subtracting appearance ", through the groping and putting into practice of over half a century, the at present domestic main method that combustible waste material is processed is burned exactly.This method one can be accomplished minimizing, and the combustible waste material one as mountain has been burnt to it; Two can realize resource, using combustible waste material as the energy, are used to generate electricity.Therefore big and medium-sized cities, the whole nation from the leadership to the masses are all in a large amount of burning power stations of building the combustible waste materials such as rubbish, stalk, mud, and indivedual province has started to have burnt it by again dig out one for the rubbish of landfill in the past.
The processing mode that the advanced countries such as America and Europe have started to abandon burning rear landfill, but following the track of the overturned cart at home, what does is the drawback of waste incineration so? think after deliberation, it is the fatal disadvantage that combustible waste material burns that combustible waste material burning can not realize the innoxious of offal treatment.Why harmful waste incineration is, because domestic house refuse the like waste does not sort mechanism, domestic waste rubbish water content is many more than 35%, in the burning process of conventional oven grate furnace or fluid bed furnace etc. because needs heat up, remove moisture, and can not burn rapidly, certainly existing the temperature space of 200-500 ℃, in genus, low temperature burns, the in the situation that of a large amount of existence of chloride (as polybag), burning process just becomes the process of a large amount of manufacture bioxin.Current garbage burning factory is all first to manufacture bioxin, the pattern of then adsorbing by spraying into active carbon etc.This has just opened convenience Wei bioxin to the pollution of environment and murder by poisoning, wherein has the accident leakage of flue gas to cause bioxin to enter the reason of environment, more has the operating costs such as active carbon high and have Some Enterprises to steal due to row puts steathily.
Cement kiln associated treatment combustible waste material has suitable advantage, its natural stable hot environment can utterly destroy bioxin, natural alkaline environment can in and sour gas, curing heavy metal, component and the cement raw material of rubbish and lime-ash are similar simultaneously, also can be by rubbish " eat clean ", investment and processing cost is minimum, technological means is flexible.
Cement kiln associated treatment combustible waste material can bring a large amount of harmful components (as potassium, sodium, chlorine, sulphur etc.) that affect cement quality, and under the prerequisite that does not affect cement quality, the ability of cement kiln associated treatment combustible waste material is limited at present; Therefore, in order to improve the ability of cement kiln associated treatment combustible waste material, some technology have adopted the way of bypass, but bypass can bring extra energy loss, so the amount of leaking informaton generally can be controlled at kiln tail and export total exhaust gas volumn 5%-10%, also slightly inadequate.
Summary of the invention
The object of the invention is to overcome the deficiency in above-mentioned background technology, provide can bypass cogeneration cement kiln associated treatment combustible waste material system, this system should have higher combustible waste material disposal ability, can guarantee the quality of production of cement simultaneously.
Technical scheme of the present invention is: cement kiln associated treatment combustible waste material system that can bypass cogeneration, comprises TRT, kiln tail preheater, kiln hood waste heat boiler and kiln tail waste heat boiler; Kiln hood waste heat boiler and kiln tail waste heat boiler connect TRT by steam circuit, the air inlet of kiln hood waste heat boiler connects the waste gas outlet of chamotte cooler, and the waste gas outlet of kiln tail preheater connects the charging aperture of kiln tail smoke-box in the air inlet of kiln tail waste heat boiler and the discharging opening of kiln tail preheater connection rotary kiln;
It is characterized in that: this system also comprise for accommodate combustible waste material and by combustible waste material be delivered to the gathering-device of incinerator, for the incinerator of burning disposal combustible waste material, produce the raw material roller mill of lime-ash and for drawing the bypass device of kiln tail smoke-box waste gas for the treatment of incinerator; In the dore furnace of the exhanst gas outlet access kiln tail preheater of described incinerator;
Described gathering-device disposes the heat exchanger for combustible waste material fermentation catalysis and oven dry, and the waste gas outlet of chamotte cooler accesses chimney with discharging waste gas after connecting successively heat exchanger and bypass air-introduced machine;
In described bypass device, kiln tail smoke-box connects by getting wind pipeline the air inlet that accesses kiln tail waste heat boiler after equipment for denitrifying flue gas, air preheater, hot precipitator, quenching apparatus, bypass waste gas dust settler successively.
Described gathering-device comprise rubbish receive storehouse, sludge treatment equipment or/stalk receives storehouse.
Described sludge treatment equipment comprises that sequentially the mud being communicated with receives storehouse, wet sludge bin, the mud feed pump of carrying mud and the desiccation machine of sludge-drying, also comprises the waste steam condensation device discharging after the exhaust steam collected in desiccation machine condensation; Described desiccation machine accesses in steam circuit to obtain sludge drying institute calorific requirement.
This system also comprises for the gas of gathering-device being inputted to the purifying processing device of incinerator; In purifying processing device, rubbish receive storehouse or/access burning disposal in incinerator after gas in sludge treatment equipment connects air blast and air preheater by air supply duct, the exhaust gases passes of air preheater is sent into the heat with introducing high-temperature flue gas got in wind pipeline between equipment for denitrifying flue gas and hot precipitator.
Described incinerator is grate type incinerator or fluidized bed incinerator.
Described stalk receives in storehouse and is provided with pulverizer.
The invention has the beneficial effects as follows:
1) house refuse and combustible waste material only need simple sorting can send into incinerator burning, have reduced the link of in earlier stage processing as far as possible, thus current cost before saving;
2) make full use of the existing residual heat resources of cement kiln, the air draft heat of tail bypass wind discharging exhaust-heat boiler is used for to discarded object fermentation catalysis and oven dry, thereby makes more easy firing of combustible waste material;
3) in refuse collection storehouse, combustible waste material goes out to produce " foul smell " just sends into incinerator after system heating, thereby thoroughly eliminates stink and effectively improve flame temperature;
4) in combustible waste material, sewage oozes out into cesspool, send into after filtering sewage water tank, its main component is organic matter, there is thermolability, adopt special-purpose pump by after sewage lifting, irregularly send into cement kiln kiln hood and burn, reduce the investment (relevant device is conventional equipment, omits in figure) of sewage disposal system and equipment;
5) lime-ash such as the slag producing in incinerator, flying dust are all sent into raw material roller mill, finally become cement alternative materials (discarded object per ton approximately can produce alternative materials 90-130kg), and thoroughly eliminate heavy metal pollution by the solidification of cement;
6) because dore furnace flue-gas temperature in rotary kiln reaches more than 850 ℃, can effectively avoid the formation temperature of bioxin, eliminate most possibly bioxin;
7) bypass device is partly drawn the sulphur of bringing in crude fuel and combustible waste material, chlorine, potassium, sodium, has effectively guaranteed that cement clinker quality is not subject to the impact of these harmful components;
8) the hot flue gas of bypass device generates electricity after by waste heat boiler, can effectively promote generated energy more than 20%;
9) adopt after the present invention, the output of clinker is constant, hear rate is constant (because combustible waste material forms difference, also likely reducing hear rate), power consumption is constant, to cement clinker production line without any adverse effect;
10) the present invention is simple, compares and reduces investment outlay approximately 50% with traditional combustible waste material burning electric power station system.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Number in the figure explanation: rotary kiln 1, kiln tail preheater 2, chamotte cooler 3, dore furnace 4, kiln tail smoke-box 5, kiln tail waste heat boiler 7 (SP), kiln hood waste heat boiler 8 (AQC), kiln tail high-temperature blower 11, air blast 12, TRT 13, wet sludge bin 14, mud feed pump 15, desiccation machine 16, waste steam condensation device 17, incinerator 18, raw material roller mill 19, air preheater 20, heat exchanger 21, mud receives storehouse 22, rubbish receives storehouse 23, stalk receives storehouse 24, pulverizer 25, equipment for denitrifying flue gas 29, raw mill 111, dust-precipitator 112 and conditioning Tower 113, (steam conveying pipeline 51 forms steam circuit with the condensate line that is back to boiler to steam conveying pipeline 51, in figure, omit condensate line), get wind pipeline 52, air supply duct 53, hot precipitator 9, quenching apparatus 10, bypass waste gas dust settler 6, bypass air-introduced machine 30, chimney 26.
The specific embodiment
Below in conjunction with Figure of description, the invention will be further described, but the present invention is not limited to following examples.
As shown in Figure 1, cement kiln associated treatment combustible waste material system that can bypass cogeneration, comprise TRT 13, kiln tail preheater 2, kiln hood waste heat boiler 8, kiln tail waste heat boiler 7, for accommodate combustible waste material and by combustible waste material be delivered to incinerator gathering-device, for the incinerator 18 of burning disposal combustible waste material, for the treatment of incinerator produce the raw material roller mill 19 of lime-ash, for drawing the bypass device of kiln tail smoke-box waste gas and for by the purifying processing device of the air input incinerator of gathering-device.
In described rotary kiln 1, the charging aperture of kiln tail smoke-box 5 connects the discharging opening of kiln tail preheater, and the waste gas outlet of kiln tail preheater connects the air inlet of kiln tail waste heat boiler, and kiln tail waste heat boiler connects TRT by steam circuit; The gas outlet of kiln tail waste heat boiler is connected with raw mill 111, dust-precipitator 112 and conditioning Tower 113 by kiln tail high-temperature blower 11, and the waste gas outlet of kiln tail preheater is also connected with raw mill, dust-precipitator and conditioning Tower by another pipeline; Kiln tail preheater comprises cyclone cylinder C1, C2, C3, the C4 and C5 (waste gas outlet of cyclone cylinder C1 is connected the air inlet of kiln tail waste heat boiler, and is connected with raw mill, dust-precipitator and conditioning Tower by another pipeline) of dore furnace 4 and plural serial stage.
The waste gas outlet of described chamotte cooler connects the air inlet of kiln hood waste heat boiler, and kiln hood waste heat boiler connects TRT by steam circuit; The waste gas outlet of chamotte cooler connects heat exchanger and the rear access chimney 26 of bypass air-introduced machine 30 successively with discharging waste gas; (this heat exchanger is for fermentation catalysis and the oven dry of combustible waste material).
Described incinerator is grate type incinerator or fluidized bed incinerator, in the dore furnace of the exhanst gas outlet access kiln tail preheater of incinerator.
In described bypass device, kiln tail smoke-box connects the air inlet (jointly accessing kiln tail waste heat boiler with the waste gas outlet of kiln tail preheater) of equipment for denitrifying flue gas 29, air preheater 20 (high-temperature flue gas is emitted heat), hot precipitator 9, quenching apparatus 10, bypass waste gas dust settler 6 rear access kiln tail waste heat boilers successively by getting wind pipeline 52.
Described gathering-device disposes for the heat exchanger of combustible waste material fermentation catalysis and oven dry (mud reception storehouse 22, rubbish receive storehouse 23, stalk receives storehouse 24 and all disposes heat exchanger); Described gathering-device comprise rubbish receive storehouse 23, sludge treatment equipment or/stalk receives storehouse 24; Described stalk receives in storehouse and is provided with pulverizer 25; Described sludge treatment equipment comprises that the mud being sequentially communicated with receives storehouse 22, wet sludge bin 14, the mud of wet sludge bin is delivered to the mud feed pump 15 of desiccation machine, the desiccation machine 16 of sludge-drying, after the exhaust steam in waste steam condensation device 17 collection desiccation machines condensation, discharges; From the exhaust steam of desiccation machine, enter the processing of lowering the temperature in waste steam condensation device; The cooling water that waste steam condensation device adopts, can be that the sewage of Sewage Plant is (in the waste water inflow waste steam condensation device of Sewage Plant, after taking away the heat of exhaust steam, return to Sewage Plant), or running water (be using water wisely, preferably configure cooling tower and form cooling water recirculation system); Exhaust steam after heat release cooling enters purifying processing device to be continued to process.
In described desiccation machine access steam circuit; Mud feed pump is transported to the mud in wet sludge bin in desiccation machine and processes, the required energy of mummification is from the mixed vapour of two boilers, after mummification, produce dewatered sludge and be transported in incinerator and burned by mud feed pump, the condensate water producing after mummification is returned to TRT.
In described purifying processing device, rubbish receive storehouse or/gas in sludge treatment equipment connects and in access incinerator, carried out after air blasts 12 and air preheater 20 (GAS ABSORPTION heat) combustion-supportingly by air supply duct 53, the exhaust gases passes of air preheater is sent into the heat with introducing high-temperature flue gas got in wind pipeline between equipment for denitrifying flue gas and hot precipitator.
The cement clinker production line that daily output of Yi Mou company is 2800 tons is example:
1, combustible waste material be transported in gathering-device (comprise rubbish receive storehouse, sludge treatment equipment or/stalk receives storehouse), then gathering-device by mechanical conveying equipment by every day the combustible waste material of nearly 300 tons deliver in incinerator and burn;
2,, after combustible waste material burns in incinerator, producing temperature and be 700-1000 ℃, exhaust gas volumn is 22000Nm
3the hot flue gas of/h is admitted in dore furnace, and the lime-ash of generation is sent to raw material roller mill;
Get wind pipeline the high alkalinity flue gas of kiln tail smoke-box (exhaust gas volumn accounts for the 30-60% left and right of kiln tail preheater, and flue-gas temperature is not less than 900 ℃) is sent into equipment for denitrifying flue gas, air preheater, hot precipitator, quenching apparatus, bypass waste gas dust settler, kiln tail waste heat boiler successively;
The exhaust gas volumn producing after incinerator incineration of combustible discarded object with enter exhaust gas volumn in bypass device about equally, to keep the flue gas balance of dore furnace; The flue gas of getting wind pipeline is during through air preheater, by from rubbish, receive storehouse or/be transported in incinerator after the air preheat of sludge treatment equipment;
The waste gas that chamotte cooler is discharged is also inputted in the heat exchanger of gathering-device, for the combustible waste material of gathering-device is fermented catalysis and oven dry, and by bypass waste gas air-introduced machine by waste gas suction smoke stack emission;
3, the steam that kiln hood waste heat boiler and kiln tail waste heat boiler produce is jointly sent in the steam turbine of TRT and is generated electricity; The lime-ash that bypass waste gas dust settler, kiln hood waste heat boiler and kiln tail waste heat boiler are discharged is sent into raw material roller mill; After lime-ash that hot precipitator is discharged is cooling, be transmitted back to raw material storage (cement raw material storehouse).
Effect of the present invention is:
1, the present invention significantly promotes the exhaust gas volumn (increasing to 30-60%) of bypass, and the hot flue gas that bypass is extracted is for cogeneration;
2, the present invention introduces chamotte cooler flue gas out in the heat exchanger of gathering-device, thereby combustible waste material is heated, and has improved the combustibility of combustible waste material,
3, in order further to improve the efficiency of combustion of discarded object, the present invention also bypass get wind pipeline in the needed air preheater of incinerator is set, wind-warm syndrome can be brought up to 200-300 ℃.
4, because cement kiln bypass can bleed off a large amount of harmful components, just guaranteed that cement kiln has larger space to receive more combustible waste material, the flue gas that bypass is drawn is for preliminary heating combustible waste material and generating, not only improved the combustibility of combustible waste material, make in combustible waste material processing procedure pollution-free, and the heat energy producing after combustible waste material burning is fully used, increased generated energy, cement kiln clinker output is constant simultaneously, heat consumption of clinker is constant, grog power consumption is constant, clinker quality is unaffected, the heat energy of whole system has obtained utilizing to greatest extent.
Claims (6)
1. cement kiln associated treatment combustible waste material system that can bypass cogeneration, comprises TRT (13), kiln tail preheater (2), kiln hood waste heat boiler (8) and kiln tail waste heat boiler (7); Kiln hood waste heat boiler and kiln tail waste heat boiler connect TRT by steam circuit, the air inlet of kiln hood waste heat boiler connects the waste gas outlet of chamotte cooler (3), and the waste gas outlet of kiln tail preheater connects the charging aperture of kiln tail smoke-box (5) in the air inlet of kiln tail waste heat boiler and the discharging opening of kiln tail preheater connection rotary kiln (1);
It is characterized in that: this system also comprise for accommodate combustible waste material and by combustible waste material be delivered to the gathering-device of incinerator, for the incinerator (18) of burning disposal combustible waste material, produce the raw material roller mill (19) of lime-ash and for drawing the bypass device of kiln tail smoke-box waste gas for the treatment of incinerator; In the dore furnace (4) of the exhanst gas outlet access kiln tail preheater of described incinerator;
Described gathering-device disposes the heat exchanger (21) for combustible waste material fermentation catalysis and oven dry, and after the waste gas outlet of chamotte cooler (3) connects heat exchanger and bypass air-introduced machine (30) successively, access chimney (26) is with discharging waste gas;
In described bypass device, kiln tail smoke-box connects the air inlet of equipment for denitrifying flue gas (29), air preheater (20), hot precipitator (9), quenching apparatus (10), the rear access of bypass waste gas dust settler (6) kiln tail waste heat boiler successively by getting wind pipeline.
2. cement kiln associated treatment combustible waste material system that can bypass cogeneration according to claim 1, is characterized in that: described gathering-device comprise rubbish receive storehouse (23), sludge treatment equipment or/stalk receives storehouse (24).
3. cement kiln associated treatment combustible waste material system that can bypass cogeneration according to claim 2, it is characterized in that: described sludge treatment equipment comprises that sequentially the mud being communicated with receives storehouse (22), wet sludge bin (14), carries the mud feed pump (15) of mud and the desiccation machine (16) of sludge-drying, also comprise the waste steam condensation device (17) discharging after the exhaust steam collected in desiccation machine condensation; Described desiccation machine accesses in steam circuit to obtain sludge drying institute calorific requirement.
4. cement kiln associated treatment combustible waste material system that can bypass cogeneration according to claim 3, is characterized in that: this system also comprises for by the purifying processing device of the gas input incinerator of gathering-device; In purifying processing device, rubbish receive storehouse or/gas in sludge treatment equipment connects after air blast (12) and air preheater (20) burning disposal in access incinerator by air supply duct, the exhaust gases passes of air preheater is sent into getting in wind pipeline to introduce the heat of high-temperature flue gas between equipment for denitrifying flue gas and hot precipitator.
5. cement kiln associated treatment combustible waste material system that can bypass cogeneration according to claim 4, is characterized in that: described incinerator is grate type incinerator or fluidized bed incinerator.
6. cement kiln associated treatment combustible waste material system that can bypass cogeneration according to claim 5, is characterized in that: described stalk receives in storehouse and is provided with pulverizer (25).
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| CN201410284453.1A CN104033905B (en) | 2014-06-23 | 2014-06-23 | System for combustible waste co-processing in cement kiln with bypass exhaust and waste heat power generation |
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Cited By (11)
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| CN104807017A (en) * | 2015-05-08 | 2015-07-29 | 北京水泥厂有限责任公司 | System for treating industrial waste in combination with thermal desorption and use method |
| CN108298844A (en) * | 2018-04-08 | 2018-07-20 | 天津健威泽节能环保科技股份有限公司 | A kind of clinker drop alkali device and implementation method |
| CN108317864A (en) * | 2018-03-22 | 2018-07-24 | 成都建筑材料工业设计研究院有限公司 | A kind of cement kiln depth waste heat recovery collaboration refuse burning system |
| CN109340769A (en) * | 2018-09-21 | 2019-02-15 | 湖南顶立科技有限公司 | The exhaust gas treating method and system of discarded circuit board pyrolysis |
| CN110006246A (en) * | 2019-03-22 | 2019-07-12 | 北京科太亚洲生态科技股份有限公司 | A kind of device and method of disposal using rotary kiln preheating raw material disposition waste |
| CN110762542A (en) * | 2019-11-04 | 2020-02-07 | 中国恩菲工程技术有限公司 | System and method for sludge and hazardous waste co-disposal |
| CN111841322A (en) * | 2020-07-29 | 2020-10-30 | 湖南萃智环保科技有限公司 | Denitration and discharge method for cement kiln |
| CN111998667A (en) * | 2020-07-16 | 2020-11-27 | 安徽上峰杰夏环保科技有限责任公司 | Bypass air discharging system for cement kiln co-processing |
| CN114087612A (en) * | 2022-01-04 | 2022-02-25 | 山西省安装集团股份有限公司 | Distributed biomass and garbage incineration treatment system |
| CN115745439A (en) * | 2022-11-03 | 2023-03-07 | 天津水泥工业设计研究院有限公司 | Method and process system for calcining cement by using low-carbon environment-friendly alternative fuel |
| WO2024174428A1 (en) * | 2023-02-22 | 2024-08-29 | 中国中材国际工程股份有限公司 | System and method for increasing substitution rate of fossil fuels in cement industry |
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