CN101216176A - Garbage burning processing method and device capable of accomplishing dioxin and dust zero discharge - Google Patents

Garbage burning processing method and device capable of accomplishing dioxin and dust zero discharge Download PDF

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Publication number
CN101216176A
CN101216176A CNA2008100502515A CN200810050251A CN101216176A CN 101216176 A CN101216176 A CN 101216176A CN A2008100502515 A CNA2008100502515 A CN A2008100502515A CN 200810050251 A CN200810050251 A CN 200810050251A CN 101216176 A CN101216176 A CN 101216176A
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China
Prior art keywords
rubbish
warehouse
flue gas
dioxin
air
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CNA2008100502515A
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Chinese (zh)
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CN100565009C (en
Inventor
朴显泽
马建华
姚连武
李松鹤
曹学龙
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吉林省三意环保锅炉有限公司
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Publication of CN101216176A publication Critical patent/CN101216176A/en
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Abstract

A zero emission waste incineration disposal method and apparatus for Dioxin and dust can fulfill that no pre-treatment is necessary to do for municipal wastes, but the wastes can be send into a refuse bucket directly that is sealed and heat-insulated; the invention utilizes the flue gas from the refuse incineration, in order to fulfill heating, fermentation and dewatering disposal; meanwhile, the refuse also performs filtering for tail gas, so as to filter out such hazardous materials as Dioxin, dust and heavy metals and etc before being drained together with waster water; the dewatered refuse can be sent into an incineration stove for combustion; large volume of combustible gas produced in the refuse fermentation can be blown into a secondary combustion chamber for combustion together with the secondary air; a little residual hazardous materials, such as Dioxin, dust and heavy metals and so on, are drained out of a purified air exhaust together with straw ash, lime and deduster and so on; the overall disposal process are circulating inside the system again and again, so that the invention has the advantages of simple process steps, less device investment, small occupied area, low device and running cost, and meanwhile, substantially fulfilling zero emission for Dioxin and dust as well as emission reduction for CO<SUB>2</SUB>.

Description

Can realize the garbage burning processing method and the device of dioxin and dust zero discharge
Technical field
The utility model belongs to field of environment protection, specifically is the pretreated total system of a kind of waste incineration and rubbish.
Background technology
Handle at present domestic waste, adopt the way of burning, generally all be before burning, need to rubbish sort, sieve, pulverize, multiple preprocessing process such as dehydration, equipment investment expense height, floor space are big; Contain a large amount of CO in the flue gas that after waste incineration, produces 2, SO 2, NO XAnd dioxin, heavy metal, harmful substances such as dust, conventional purification method to flue gas is to adopt electrostatic precipitator or cyclone dust collectors or wet scrubber or dry collector or several deduster to carry out organic cooperation, flue gas is handled the back enter atmosphere by chimney, these methods all can not satisfy the requirement to the city garbage burning tail gas clean-up, the employing that has in recent years sprays into active carbon powder in flue gas, and then the active carbon powder that will be adsorbed with dioxin is separated from flue gas, send into combustion chambers burn to reduce the discharging of dioxin, as: the Chinese patent publication number is CN1246597A, open day is on March 8th, 2000, and denomination of invention is " process for treating dioxin in the waste gas generated by burning garbage "; This application case discloses, and in the flue gas that waste incineration produces, at first removes dust through wet scrubber, sprays into active carbon powder again, and the active carbon powder that will be adsorbed with dioxin is again separated from flue gas, sends into combustion chambers burn.Outwards discharge though this method can reduce nuisances such as dioxin, the weak point of this method is: a, need rubbish is carried out preliminary treatment before rubbish enters the rubbish warehouse, equipment investment expense height, floor space are big; The flue gas purifying equipment of b, employing is also more relatively, bigger, and to nuisances such as the dioxin that exists in the flue gas, dust, can not remove fully, still needs to establish taller and bigger chimney outwards to discharge; C, utilize activated carbon powder absorption dioxin cost height, strengthened operating cost.
Summary of the invention
Purpose of the present invention is exactly in order to overcome oneself the deficiency of technology to be arranged, and proposes a kind ofly can exempt the preprocessing process of rubbish before burning substantially; Processing step is easy, equipment drops into expense is few, floor space is little, operating cost the is low dioxin realized and the garbage burning processing method and the equipment of dust zero discharge.
The objective of the invention is to be achieved through the following technical solutions:
A kind of garbage burning processing method of realizing dioxin and dust zero discharge the steps include:
1), the municipal refuse of collecting sorted out building waste after, directly pour in the rubbish warehouse of sealing by garbage inlet;
2), utilize the clamshell crane be located in the rubbish warehouse, be heated, ferment, and the rubbish that dewatered send into the hopper of incinerator by the passage of sealing, prepare to burn;
3), flue gas that waste incineration is produced, through behind the waste heat boiler, under the traction of air-introduced machine, directly send in the flue gas distributor box that is arranged on below the rubbish warehouse by flue, the flue gas distributor box is communicated with the rubbish warehouse by electrically operated valve; Electrically operated valve is the program that configures according to the people, rhythmical folding under the control of automatic control unit, with flue gas according to certain rule, by the different zone that the air admission hole on the warehouse base plate is blown in the rubbish warehouse rubbish is evenly heated, and the rubbish temperature in the rubbish warehouse is remained in 30 ℃ of-60 ℃ of scopes;
4), when the flue gas that utilizes incineration firing to produce heats rubbish, utilize rubbish that flue gas is filtered again, harmful substances such as dioxin that flue gas contains, dust, heavy metal are fallen by rubbish filtering; Nuisances such as the particle that is stained with dioxin that rubbish is got off by rubbish filtering through heating, ferment, dewater the hydrops of generation, carrying, dust, heavy metal enter plash along warehouse base plate waste canal;
5) can produce a certain amount of oxygen source and hydroxyl free radical, the CO in the flue gas after, rubbish is heated 2, CO, NO XUnder anaerobic, temperature can generate CH by sealed fermenting in 30 ℃ of-60 ℃ of scopes 4Under the hydroxyl free radical effect, can impel CO 2And CH 4Reaction changes into CO; Utilize overfire air fan that these are contained the flue gas of a large amount of fuel gas, major part is sent into the incinerator second-time burning together in company with secondary wind;
6), the remaining flue gas of small part, by the warehouse blast pipe time, in straw ash that sprays into by straw ash and pulverized limestone entrance and the pulverized limestone absorption flue gas remaining dioxin and in and the acidic materials in the flue gas, flue gas is handled through deduster again, purified gas is discharged by purifying pore.
In addition, the employed incinerator of this garbage burning processing method adopts head air-supply reciprocating furance row, dipole vortex arch and multi-stage multi-pipe rotation secondary wind; The air output of fire grate bottom is controlled at about 20% of total blast volume, makes 80% air quantity contain the flue gas of a large amount of fuel gas comprising the rubbish warehouse, by overfire air fan, by multi-stage multi-pipe rotation secondary wind, tangentially sprays into from aditus laryngis; The temperature at burner hearth aditus laryngis place is increased to more than 1000 ℃, the dioxin of generation is decomposed fully, after leaving aditus laryngis, flue gas enters roomy burner hearth, make flue gas the humidity province time of staying more than 850 ℃ above three seconds, after flue gas enters convection section, make flue gas in 0.1 second time, below the rapid drawdown to 300 ℃, make it can't synthesize dioxin again.
Can realize the device of the garbage burning processing method of dioxin and dust zero discharge, this device comprises that rubbish warehouse, incinerator, waste heat boiler is characterized in that:
A, rubbish warehouse (2) are airtight, insulation, in the top of rubbish warehouse (2) Packed garbage inlet (13) is set, top in rubbish warehouse (2) is provided with clamshell crane (12), and the passage that transports rubbish that is provided with a sealing in the side of rubbish warehouse (2) is connected with waste incineration batch hopper (10);
B, a warehouse base plate (7) is set in the bottom of rubbish warehouse (2), warehouse base plate (7) is a waveform, crest is provided with base plate air admission hole (20), trough is waste canal (19), from the horizontal by 10-15 degree inclination angle, waste canal (19) lower end links to each other with plash (8) along waste canal (19) direction;
C, in the below of warehouse base plate (7) some flue gas dividing plates (21) are set warehouse base plate (7) is divided into some partitions (18), each partition (18) all passes through to cut off the base plate air admission hole (20) and the corresponding regional connectivity of rubbish warehouse (2) of top;
D, exhaust-heat boiler flue gas outlet (23) link to each other with air-introduced machine (3), air-introduced machine (3) directly is connected with flue gas distributor box (5) by flue (14), the flue gas distributor box is provided with electrically operated valve (6), and electrically operated valve (6) is connected with rubbish warehouse (2) by cutting off (18); Electrically operated valve (6) is electrically connected mutually with automatic control unit, and automatic control unit is electrically connected with power supply mutually by power switch;
E, be provided with a warehouse blast pipe (9) at the top of rubbish warehouse (2), one end of warehouse blast pipe (9) is connected with rubbish warehouse (2), the other end is connected with deduster (17) by straw ash, the pulverized limestone entrance (15) that is arranged on the warehouse gas exhaust piping, is provided with clean gas outlet (22) in the top of deduster (17);
F, incinerator overfire air fan (16) one ends are connected with loop exit and atmosphere in the warehouse flue gas respectively by control valve (24), and the other end links to each other with secondary air system by second-time burning chamber inlet (11); Primary air fan (4) is connected with fire grate bottom air compartment.
The present invention is owing to adopted technique scheme, and its beneficial effect is: 1) can exempt substantially the preprocessing process of rubbish before burning, can directly send into the rubbish warehouse for the municipal refuse that does not contain building waste, participate in burning; 2), saved rubbish and given processing and flue gas purifying equipment because the flue gas that produces behind the incineration firing directly is introduced into the rubbish warehouse through waste heat boiler, and when rubbish was heated, rubbish filtered flue gas again, killed two birds with one stone; 3) rubbish under anaerobic is heated, ferments and participates in series of chemical, has reduced the CO in the flue gas 2Content, increased the quantity of fuel gas, these gas major parts are sent back to incinerator again and are participated in burning, even all the other small part flue gases contain remaining dioxin dust, after straw ash and pulverized limestone and deduster are handled once more, can realize substantially that the Purge gas of discharging does not contain dioxin and dust; 4), owing to the flue gas of discharging from waste heat boiler, most of in system by oneself, recycling, and substitute active carbon with plant ash, therefore whole incineration treatment of garbage process steps equipment simple, that need is few, floor space is little, equipment investment and operating cost are low.
Description of drawings
Fig. 1 is the structural representation of this contrive equipment
Fig. 2 is the rubbish warehouse structural representation of apparatus of the present invention
Fig. 3 is a warehouse base arrangement schematic diagram in the rubbish warehouse
Fig. 4 is the left view of Fig. 3
Fig. 5 is the vertical view of Fig. 3
Wherein: 1-incinerator 2-rubbish warehouse 3-air-introduced machine 4-primary air fan 5-flue gas distributor box 6-motor switch 7-warehouse base plate 8-plash 9-warehouse blast pipe 10-incinerator hopper 11-second-time burning chamber inlet 12-clamshell crane 13-garbage inlet 14-flue 15-tangerine bar ash pulverized limestone entrance 16-overfire air fan 17-deduster 18-flue gas cuts off loop exit in 19-spilling water structure 20-base plate air admission hole 21-flue gas dividing plate 22-clean gas outlet 23-waste heat pot smoke outlet tube 24-flue gas, the air air volume control valve 25-waste heat pot 26-warehouse flue gas.
The specific embodiment
Below in conjunction with accompanying drawing the inventive method and device are further described: as shown in Figure 1, after the municipal refuse of collecting only sorted out building waste, need not carry out other preliminary treatment again can send in the rubbish warehouse 2 by double layered bell jar type garbage inlet 13, guarantee that the rubbish warehouse not only is incubated but also seal, in rubbish warehouse 2, be provided with a clamshell crane 12, by clamshell crane will be heated, ferment, and the rubbish that dewatered send into the hopper 10 of incinerator by the passage of sealing, prepare to burn;
Incinerator 1 adopts head air-supply reciprocating furance row patented technology, the patent No.: ZL200420011747.9, the fire grate segment total height reaches 80~150 millimeters general coal furnace screenings of ratio and exceeds 40~70 millimeters, being beneficial to pushing away of rubbish raises, there is not ventilation gap between each fire grate segment, therefore fire grate runout material not is fit to waste incineration.Fire grate bottom air output is controlled at 20% of total blast volume, makes approximate half gasification, and combustion of rubbish on the fire grate;
Chimney arch adopts dipole vortex arch, is about to the original front and back of incinerator arch and fuses, and opens the round hole of even number at the aditus laryngis place, will encircle flue gas and orderly being drawn by the circle hole of fuel gas that produces down;
Incinerator secondary elegance is rotated secondary wind patented technology with multipole multitube, the patent No.: ZL200420011746.4, a large amount of combustion airs that accounts for total blast volume 80%, under the drive of overfire air fan 16, and carry the flue gas that warehouse 2 contains a large amount of fuel gas and tangentially spray into by the secondary air system of second-time burning chamber inlet 11 along aditus laryngis place, top, circle hole, make fuel gas fully obtain burning; Because burning is the gasification product of rubbish, can improve more than the fire box temperature to 1000 ℃, the dioxin of generation is decomposed fully, after flue gas enters convection section in 0.1 second time again below the rapid drawdown to 300 ℃, make it can't synthesize dioxin again, therefore the content of dioxin is extremely low from the flue gas that waste heat boiler is discharged;
As Fig. 1, Fig. 2, Fig. 3, Fig. 4 and shown in Figure 5, municipal refuse burns the flue gas that produces in incinerator, flue gas through waste heat boiler 25 heat absorption back discharges, under the traction of air-introduced machine 3, directly send in the flue gas distributor box 5 that is arranged on below the rubbish warehouse 2 by flue 14, flue gas distributor box 5 is provided with several electrically operated valves 6 and cuts off 18 with the flue gas of rubbish warehouse base plate 7 belows respectively and is connected, electrically operated valve 6 is electrically connected by lead and automatic control unit, automatic control unit is electrically connected by power switch and power supply, electrically operated valve 6 is the program that configures according to the people, rhythmical folding under the control of automatic control unit is carried out uniform heating by the different zone that the base plate air admission hole 20 on the warehouse base plate 7 is blown in the rubbish warehouse 2 to rubbish according to certain rule with flue gas;
The flue gas that incineration firing produces is when heating rubbish, and rubbish plays a role in filtering to flue gas again, and harmful substances such as the dioxin that flue gas contains, dust, heavy metal are fallen by rubbish filtering; Rubbish temperature in the rubbish warehouse 2, regulating the flue-gas temperature that enters in the flue gas distributor box by introducing high-temperature flue gas or cold air controls, rubbish temperature in the rubbish warehouse 2 is remained in 30 ℃ of-60 ℃ of scopes, the easiest rubbish fermentation that makes in this temperature province, the rubbish fermentation dehydration, ponding is carrying the waste canals 19 of nuisance on warehouse base plate 7 such as the particle that is stained with dioxin that got off by rubbish filtering, dust, heavy metal and is entering plash 8, can effectively fall the content of the synthetic dioxin catalyst in the end;
Can produce a certain amount of oxygen source and hydroxyl free radical after rubbish is heated, very help the carrying out of chemical reaction, the CO in the flue gas 2, CO, NO XUnder anaerobic temperature can generate CH by sealed fermenting in 30 ℃ of-60 ℃ of scopes 4Under the hydroxyl free radical effect, can impel CO 2And CH 4Reaction changes into CO, and these contain the flue gas of a large amount of fuel gas, most of in the rubbish warehouse flue gas loop exit 26 be admitted to the incinerator second-time burning through the traction of overfire air fan 16 together in company with secondary wind.
The flue gas of remaining small part, when being arranged on the blast pipe 9 above the rubbish warehouse, remaining dioxin and acidic materials in the flue gas, by the straw ash and the pulverized limestone that spray into from straw ash and pulverized limestone entrance 15, absorption and neutralization, flue gas rationally cooperates through dry collector or wet scrubber or cyclone dust collectors or its again to be handled, and the purified gas of being discharged by clean gas outlet 22 at last can be realized the zero-emission of dioxin and dust substantially and realizes CO 2Reduction of discharging.

Claims (3)

1. the garbage burning processing method that can realize dioxin and dust zero discharge the steps include:
1), the municipal refuse of collecting sorted out building waste after, directly pour in the rubbish warehouse of sealing by garbage inlet;
2), utilize the clamshell crane be located in the rubbish warehouse, be heated, ferment, and the rubbish that dewatered send into the hopper of incinerator by the passage of sealing, prepare to burn;
3), flue gas that waste incineration is produced, through behind the waste heat boiler, under the traction of air-introduced machine, directly send in the flue gas distributor box that is arranged on below the rubbish warehouse by flue, the flue gas distributor box is communicated with the rubbish warehouse by electrically operated valve; Electrically operated valve is the program that configures according to the people, rhythmical folding under the control of automatic control unit, with flue gas according to certain rule, by the different zone that the air admission hole on the warehouse base plate is blown in the rubbish warehouse rubbish is evenly heated, and the rubbish temperature in the rubbish warehouse is remained in 30 ℃ of-60 ℃ of scopes;
4), when the flue gas that utilizes incineration firing to produce heats rubbish, utilize rubbish that flue gas is filtered again, harmful substances such as dioxin that flue gas contains, dust, heavy metal are fallen by rubbish filtering; Nuisances such as the particle that is stained with dioxin that rubbish is got off by rubbish filtering through heating, ferment, dewater the liquid of generation, carrying, dust, heavy metal enter plash along warehouse base plate waste canal;
5) can produce a certain amount of oxygen source and hydroxyl free radical, the CO in the flue gas after, rubbish is heated 2, CO, NO XUnder anaerobic, temperature can generate CH by sealed fermenting in 30 ℃ of-60 ℃ of scopes 4Under the hydroxyl free radical effect, can impel CO 2And CH 4Reaction changes into CO; Utilize overfire air fan that these are contained the flue gas of a large amount of fuel gas, major part is sent into the incinerator second-time burning together in company with secondary wind;
6), the remaining flue gas of small part, by the warehouse blast pipe time, in straw ash that sprays into by straw ash and pulverized limestone entrance and the pulverized limestone absorption flue gas remaining dioxin and in and the acidic materials in the flue gas, flue gas is handled through deduster again, purified gas is discharged by purifying pore.
2. as the said a kind of garbage burning processing method of realizing dioxin and dust zero discharge of claim 1, it is characterized in that: the employed incinerator of this garbage burning processing method, adopt head air-supply reciprocating furance row, dipole vortex arch and multi-stage multi-pipe rotation secondary wind; The air output of fire grate bottom is controlled at about 20% of total blast volume, makes 80% air quantity contain the flue gas of a large amount of fuel gas comprising the rubbish warehouse, by overfire air fan, by multi-stage multi-pipe rotation secondary wind, tangentially sprays into from aditus laryngis; The temperature at burner hearth aditus laryngis place is increased to more than 1000 ℃, the dioxin of generation is decomposed fully, after leaving aditus laryngis, flue gas enters roomy burner hearth, make flue gas the humidity province time of staying more than 850 ℃ above three seconds, after flue gas enters convection section, make flue gas in 0.1 second time, below the rapid drawdown to 300 ℃, make it can't synthesize dioxin again.
3. as claim 1 or 2 said a kind of devices of realizing the garbage burning processing method of dioxin and dust zero discharge, this device comprises that rubbish warehouse, incinerator, waste heat boiler is characterized in that:
A, rubbish warehouse (2) are airtight, insulation, in the top of rubbish warehouse (2) Packed garbage inlet (13) are set, and the top in rubbish warehouse (2) is provided with clamshell crane (12), at the rubbish warehouse
(2) passage that transports rubbish that side is provided with a sealing is connected with waste incineration batch hopper (10);
B, a warehouse base plate (7) is set in the bottom of rubbish warehouse (2), warehouse base plate (7) is a waveform, crest is provided with base plate air admission hole (20), trough is waste canal (19), from the horizontal by 10-15 degree inclination angle, waste canal (19) lower end links to each other with plash (8) along waste canal (19) direction;
C, in the below of warehouse base plate (7) some flue gas dividing plates (21) are set warehouse base plate (7) is divided into some partitions (18), each partition (18) all passes through to cut off the base plate air admission hole (20) and the corresponding regional connectivity of rubbish warehouse (2) of top;
D, exhaust-heat boiler flue gas outlet (23) link to each other with air-introduced machine (3), air-introduced machine (3) directly is connected with flue gas distributor box (5) by flue (14), the flue gas distributor box is provided with electrically operated valve (6), and electrically operated valve (6) is connected with rubbish warehouse (2) by cutting off (18); Electrically operated valve (6) is electrically connected mutually with automatic control unit, and automatic control unit is electrically connected with power supply mutually by power switch;
E, be provided with a warehouse blast pipe (9) at the top of rubbish warehouse (2), one end of warehouse blast pipe (9) is connected with rubbish warehouse (2), the other end is connected with deduster (17) by straw ash, the pulverized limestone entrance (15) that is arranged on the warehouse gas exhaust piping, is provided with clean gas outlet (22) in the top of deduster (17);
F, incinerator overfire air fan (16) one ends are connected with loop exit (26) and atmosphere in the warehouse flue gas respectively by control valve (24), and the other end links to each other with secondary air system by second-time burning chamber inlet (11); Primary air fan (4) is connected with fire grate bottom air compartment.
CNB2008100502515A 2008-01-14 2008-01-14 Can realize the garbage burning processing method and the device of dioxin and dust zero discharge CN100565009C (en)

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CNB2008100502515A CN100565009C (en) 2008-01-14 2008-01-14 Can realize the garbage burning processing method and the device of dioxin and dust zero discharge

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CN100565009C CN100565009C (en) 2009-12-02

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102607032A (en) * 2012-03-07 2012-07-25 陈震 System and method for winter refuse wet-steaming and fermentation for household refuse fired power plants
CN101991993B (en) * 2009-08-24 2012-09-05 中国中煤能源集团有限公司 Dust removal device
CN102767829A (en) * 2012-07-13 2012-11-07 李登平 Waste pretreatment process and waste treatment system applying same
CN104266217A (en) * 2014-10-09 2015-01-07 西安交通大学 Grate-fired furnace multipath denitration system and denitration method thereof
CN104588402A (en) * 2015-02-02 2015-05-06 湖南鹞翔环保能源科技有限公司 Solid waste innocent treatment device and method
CN106439831A (en) * 2016-10-20 2017-02-22 深圳市粤昆仑环保实业有限公司 Method for restraining production of dioxin in waste incineration
CN108730985A (en) * 2018-06-06 2018-11-02 上海古蓝环境工程有限公司 A kind of drying unit of refuse pyrolysis gasification furnace
CN108930964A (en) * 2018-06-06 2018-12-04 上海古蓝环境工程有限公司 A kind of refuse pyrolysis gasification furnace rotary fire grate device
CN108954324A (en) * 2018-06-06 2018-12-07 上海古蓝环境工程有限公司 A kind of dump grate device of refuse pyrolysis gasification furnace

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101991993B (en) * 2009-08-24 2012-09-05 中国中煤能源集团有限公司 Dust removal device
CN102607032A (en) * 2012-03-07 2012-07-25 陈震 System and method for winter refuse wet-steaming and fermentation for household refuse fired power plants
CN102767829A (en) * 2012-07-13 2012-11-07 李登平 Waste pretreatment process and waste treatment system applying same
CN102767829B (en) * 2012-07-13 2014-09-17 李登平 Waste pretreatment process and waste treatment system applying same
CN104266217A (en) * 2014-10-09 2015-01-07 西安交通大学 Grate-fired furnace multipath denitration system and denitration method thereof
CN104588402A (en) * 2015-02-02 2015-05-06 湖南鹞翔环保能源科技有限公司 Solid waste innocent treatment device and method
CN106439831A (en) * 2016-10-20 2017-02-22 深圳市粤昆仑环保实业有限公司 Method for restraining production of dioxin in waste incineration
CN108730985A (en) * 2018-06-06 2018-11-02 上海古蓝环境工程有限公司 A kind of drying unit of refuse pyrolysis gasification furnace
CN108930964A (en) * 2018-06-06 2018-12-04 上海古蓝环境工程有限公司 A kind of refuse pyrolysis gasification furnace rotary fire grate device
CN108954324A (en) * 2018-06-06 2018-12-07 上海古蓝环境工程有限公司 A kind of dump grate device of refuse pyrolysis gasification furnace

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Free format text: CORRECT: INVENTOR; FROM: PIAO XIANZE MA JIANHUA YAO LIANWU LI SONGHE CAO XUELONG TO: JIN TIESHI PIAO XIANZE MA JIANHUA YAO LIANWU LI SONGHE CAO XUELONG

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Address after: 130042, No. 16 Jingxing North Street, Nanguan District, Jilin, Changchun

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Patentee after: Jilin Sanyi Environmental-protection Boiler Co., Ltd.

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Inventor before: Pu Xianze

Inventor before: Ma Jianhua

Inventor before: Yao Lianwu

Inventor before: Li Songhe

Inventor before: Cao Xuelong

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Granted publication date: 20091202

Termination date: 20150114

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