CN104141958A - Tail flue gas afterheat recycling system of mechanical waste incineration grate boiler and automatic control method thereof - Google Patents
Tail flue gas afterheat recycling system of mechanical waste incineration grate boiler and automatic control method thereof Download PDFInfo
- Publication number
- CN104141958A CN104141958A CN201410409851.1A CN201410409851A CN104141958A CN 104141958 A CN104141958 A CN 104141958A CN 201410409851 A CN201410409851 A CN 201410409851A CN 104141958 A CN104141958 A CN 104141958A
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- Prior art keywords
- air path
- circulation air
- circulating
- air flue
- flue gas
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 239000003546 flue gas Substances 0.000 title claims abstract description 38
- 238000004064 recycling Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims abstract description 6
- 238000004056 waste incineration Methods 0.000 title claims abstract description 5
- 238000001035 drying Methods 0.000 claims abstract description 15
- 230000001105 regulatory effect Effects 0.000 claims abstract description 11
- 239000010813 municipal solid waste Substances 0.000 claims description 24
- 238000002485 combustion reaction Methods 0.000 claims description 12
- 239000007789 gas Substances 0.000 claims description 12
- 239000002918 waste heat Substances 0.000 claims description 12
- 239000010791 domestic waste Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 6
- 239000003245 coal Substances 0.000 abstract 1
- 239000002699 waste material Substances 0.000 abstract 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 238000000746 purification Methods 0.000 description 4
- 239000003517 fume Substances 0.000 description 3
- 238000004939 coking Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
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- Incineration Of Waste (AREA)
Abstract
The invention relates to a tail flue gas afterheat recycling system of a mechanical waste incineration grate boiler and an automatic control method of the system. The system comprises a circulating fan, a circulating air flue, a circulating air flue baffle, a circulating secondary air flue, a circulating secondary air flue baffle, a drying grate circulating air flue and a drying grate air flue baffle, wherein the circulating fan is mounted on the circulating air flue; the circulating air flue baffle for regulating the volume of circulating flue gas is mounted on the circulating air flue; one end of the circulating air flue is connected with a tail coal economizer outlet flue of the mechanical waste incineration grate boiler, and the other end of the circulating air flue is divided into two branch pipes which are connected to a main secondary air flue and a drying grate air chamber, respectively; the circulating secondary air flue baffle for regulating the volume of flue gas of the circulating secondary air flue is mounted on the circulating secondary air flue; the drying grate circulating air flue baffle for regulating the volume of flue gas of the drying grate circulating air flue is mounted on the drying grate circulating air flue. The system disclosed by the invention can be used for recycling flue gas to replace all primary air for waste drying, reducing the volume of primary air by about 10%-15%, and reducing the volume of heating steam in a high-temperature section and a low-temperature section of a primary air steam preheater by about 10%-15%.
Description
Technical field
The present invention relates to burning city domestic garbage field, particularly bootstrap system and the autocontrol method thereof of the circulation of mechanical type garbage incinerator grate furnace waste heat boiler afterbody economizer exit partial fume.
Background technology
Burning city domestic garbage is processed with mechanical type grate furnace and is generally divided into dry fire grate 1, combustion grate 2 and burn-out grate 3 three parts.Each section of fire grate supplied with hot blast by a wind, and wherein, dry fire grate is mainly used in garbage drying with wind, does not participate in burning.One time air temperature is about 180 ℃ when refuse thermal value is 1600kcal/kg, its as the case may be maximum can reach 220 ℃ or 300 ℃.And minimumly during waste heat boiler 4 exit gas temperature light pipe be about 190 ℃, the highlyest be no more than 220 ℃, substantially waste heat boiler afterbody circulating flue gas can be not be directly used in drying oven row garbage drying by heating and uses, and amount of circulating gas can substitute even all wind for drying garbage of a part.
Secondary Air is mainly used in regulating heat boiler outlet oxygen concentration, reduces fire box temperature and prevents that coking and disturbance incinerator first passage flue gas flow field are to promote flue-gas temperature even flow field to distribute.Equally, according to the refuse thermal value situation of combustion conditions, all need Secondary Air to heat during lower than 1433kcal/kg, when refuse thermal value is during lower than 1000kcal/kg, Secondary Air is the highest need to be heated to 220 ℃.And current domestic refuse thermal value is generally on the low side, so waste heat boiler afterbody circulating flue gas can directly not substitute even all Secondary Airs of a part by heating.
In existing disclosed patent documentation:
(1) if publication number is CN101943409A, title is a kind of patent documentation of incinerator, it has disclosed circulating flue gas as the tertiary air that is arranged in Secondary Air top, rationally do not utilize existing equipment and system, tertiary air and secondary wind action are repetition in fact, when refuse thermal value is higher, for fast reducing furnace temperature, to prevent coking, described tertiary air does not have Secondary Air successful especially; Meanwhile, newly-increased autonomous system to burner hearth smooth combustion many again a hidden danger.
(2) and for example publication number is CN202993220U, and title is the patent documentation of the stoker fired grate incinerator high-temperature flue gas circulatory system, and it has disclosed a flue gas recirculation part for dry fire grate wind, and a part is directly used in gas-gas phase flue gas air heat-exchange.No matter and more complicated in this system architecture, it is unsatisfactory that the air of the flue gas of 200 ℃ and 45 ℃ carries out gas-gas phase flue gas air heat-exchange effect, and simultaneously simple circulating flue gas is for dry fire grate heating, and system coordination is also bad.
(3) Granted publication number is CN201396766Y for another example, and title is a kind of patent documentation of flue gas of garbage furnace recirculation low-position waste heat energy reutilization device, and it has disclosed flue gas recirculation for dry fire grate and burn-out grate air feed.Impact with operation, operation, rubbish can small part on burn-out grate sustained combustion, but in circulating flue gas oxygen content general control 6% ~ 12%, once replace primary air, on burn-out grate, combustiblerefuse can not guarantee fully to burn, and the hot burn decrement rate of incinerator is difficult to guarantee below 3%.
To sum up, three pieces of prior aries that patent documentation is representative that more than exemplify, all the UTILIZATION OF VESIDUAL HEAT IN technology of mechanical type garbage incinerator grate furnace waste heat boiler afterbody economizer exit partial fume circulation is not reached to gratifying effect, still have further improvement to explore.In prior art, do not relate to circulating flue gas for substituting even all technology enlightenments of Secondary Air of a part simultaneously yet.
Summary of the invention
The object of the invention is mechanical type garbage incinerator grate furnace waste heat boiler afterbody economizer exit partial fume waste heat further to improve, recycled.
Concrete technical scheme of the present invention is as follows:
A mechanical type garbage incinerator grate furnace boiler tail flue gas recycling residual heat system, comprises circulating fan, circulation air path, circulation air path baffle plate, Secondary Air circulation air path, Secondary Air circulation air path baffle plate, dry fire grate circulation air path and dry fire grate circulation air path baffle plate; Described circulating fan is arranged on circulation air path, and the circulation air path baffle plate that regulates amount of circulating gas is housed on described circulation air path; One end of circulation air path connects mechanical type refuse incineration grate furnace boiler tail economizer exit flue, circulation air path other end bifurcation pipe and be connected to respectively Secondary Air main air duct and drying oven exhaust air box; On described Secondary Air circulation air path, be equipped with for regulating the Secondary Air circulation air path baffle plate of Secondary Air circulation air path exhaust gas volumn; On dry fire grate circulation air path, be equipped with for regulating the dry fire grate circulation air path baffle plate of dry fire grate circulation air path exhaust gas volumn.
In the present invention, for ACC technology, Auto combustion control automatic combustion is controlled, and can be called referring to Granted publication 102927573B name the patent of invention document of one way of life incinerator automatic combustion control system.
The present invention provides a kind of autocontrol method of mechanical type garbage incinerator grate furnace boiler tail flue gas recycling residual heat system simultaneously, based on Granted publication 102927573B name, to be called the basis of one way of life incinerator automatic combustion control system, by three control loops, realize the control of domestic waste incineration automatic combustion control system to waste heat boiler tail flue gas recycling residual heat system: 1) according to furnace temperature, regulate Secondary Air circulation air path baffle plate on Secondary Air circulation air path, realize the flow-control of Secondary Air circulation air path; 2), according to entering incineration furnace garbage characteristic, ACC calculates required dry with air quantity, and regulates dry fire grate circulation air path baffle plate, realizes dry fire grate circulation air path flow-control; 3) according to the flow-control of Secondary Air circulation air path and the flow-control of dry fire grate circulation air path, realize circulation air path and circulating fan flow-control.
Further, circulating fan is high-temperature blower.
Beneficial effect of the present invention is, can substitute a wind for whole drying garbages, reduces primary air flow (approximately 10% ~ 15%) and a wind vapor preheater high and low temperature section heating steam amount (approximately 10 ~ 15%), thereby improves generated energy approximately 0.1 ~ 1%; Substitute whole Secondary Airs, cancel original overfire air fan and Secondary Air preheater; Can suitably reduce burner hearth oxygen content, reduce the generation of thermal NO x; Can reduce the smoke-purifying tolerance of flue gas purification system, thereby reduce flue gas purification system load and air-introduced machine is exerted oneself.This invention system is simple, rational in infrastructure, workable, is applicable to the reducing energy consumption of grassroot project and off-the-shelf item.
Accompanying drawing explanation
Fig. 1 is mechanical type garbage incinerator grate furnace boiler tail flue gas recycling residual heat system schematic of the present invention.
Fig. 2 is the enlarged diagram of circulation air path in Fig. 1.
Wherein:
1-dry fire grate; 2-combustion grate; 3-burn-out grate; 4-waste heat boiler; 5-primary air fan; 6-stop valve; 7-circulating fan; 8-circulation air path baffle plate; 9-Secondary Air circulation air path baffle plate; 10-dry fire grate circulation air path baffle plate; 11-circulation air path; 12-Secondary Air circulation air path; 13-dry fire grate circulation air path.
In figure: what actual situation line represented is flue gas, air duct; What chain-dotted line represented is ACC control loop.
The specific embodiment
As shown in Figure 1, mechanical type garbage incinerator grate furnace boiler tail flue gas recycling residual heat system, comprises circulating fan 7, circulation air path 11, circulation air path baffle plate 8, Secondary Air circulation air path 12, Secondary Air circulation air path baffle plate 9, dry fire grate circulation air path 13 and dry fire grate circulation air path baffle plate 10.On described circulation air path 11, circulating fan 7 is installed, circulation air path 11 1 termination waste heat boiler 4 economizer exit flues, other end bifurcation pipe and be connected to respectively Secondary Air main air duct and dry fire grate 1 air compartment.
Circulating flue gas temperature is about 190 ~ 220 ℃, and circulating fan 7 is high-temperature blower.
Secondary Air circulation air path baffle plate 9 is housed on Secondary Air circulation air path 12 and is used for regulating Secondary Air circulation air path exhaust gas volumn, dry fire grate circulation air path baffle plate 10 is housed on dry fire grate circulation air path 13 and is used for regulating dry fire grate circulation air path exhaust gas volumn.
According to furnace temperature, regulate Secondary Air circulation air path baffle plate 9 on Secondary Air circulation air path 12, realize 12 flow-controls of Secondary Air circulation air path.
According to entering incineration furnace garbage characteristic, ACC calculates required dry with air quantity, and regulates dry fire grate circulation air path baffle plate 10, realizes dry fire grate circulation air path 13 flow-controls.
According to 12 flow-controls of Secondary Air circulation air path and dry fire grate circulation air path 13 flow-controls, realize circulation air path 11 and circulating fan 7 flow-controls.
Being implemented as follows of circulating flue gas system tri-control loops of ACC in the present embodiment:
1) according to furnace temperature, regulate Secondary Air circulation air path baffle plate on Secondary Air circulation air path, realize the flow-control of Secondary Air circulation air path: when combustion conditions changes, Sensor monitoring changes to furnace temperature thereupon, ACC calculates and instruction Secondary Air circulation air path baffle plate certain amplitude opening and closing movement, the furnace temperature again monitoring when sensor equals the suitable furnace temperature value that ACC calculates, Secondary Air circulation air path baffle plate stops action, and control operation completes; Otherwise ACC recalculates and instruction Secondary Air circulation air path baffle plate certain amplitude opening and closing movement, until the furnace temperature that sensor finally monitors equals the suitable furnace temperature value that the ACC of this operating mode calculates.
2) according to entering incineration furnace garbage characteristic, ACC calculates required dry with air quantity, and the dry fire grate circulation air path baffle plate of adjusting, realize dry fire grate circulation air path flow-control: when garbage property changes, ACC calculates the suitable dry air quantity of using of corresponding garbage property according to storage data, be dried while not mating with wind flow meter monitor value, ACC controls and regulates dry fire grate circulation air path baffle plate certain amplitude opening and closing movement, some dry equal by wind flow meter prison value that ACC calculates suitable dry with air quantity, have controlled; Otherwise ACC recalculates, controls and regulates dry fire grate circulation air path baffle plate certain amplitude opening and closing movement, until dry, by wind flow meter prison value, equal the suitable dry air quantity of using that ACC calculates.
3) according to the flow-control of Secondary Air circulation air path and the flow-control of dry fire grate circulation air path, realize Secondary Air circulation air path flow and dry fire grate circulation air path traffic demand amount that circulation air path and circulating fan flow-control: ACC calculate different operating modes, circulating fan frequency/rotating speed is controlled and regulated to ACC certain amplitude, if circulation air path flowmeter monitor value equals the demand that ACC calculates, controlled; Otherwise ACC recalculates and certain amplitude is controlled and regulates circulating fan frequency/rotating speed, until circulation air path flowmeter monitor value equals the demand that ACC calculates.
The present invention can substitute a wind for whole drying garbages, reduces primary air flow (approximately 10% ~ 15%) and a wind vapor preheater high and low temperature section heating steam amount (approximately 10 ~ 15%), thereby improves generated energy approximately 0.1 ~ 1%; Substitute whole Secondary Airs, cancel original overfire air fan and Secondary Air preheater; Can suitably reduce burner hearth oxygen content, reduce the generation of thermal NO x; Can reduce the smoke-purifying tolerance of flue gas purification system, thereby reduce flue gas purification system load and air-introduced machine is exerted oneself.This invention system is simple, rational in infrastructure, workable, is applicable to the reducing energy consumption of grassroot project and off-the-shelf item.
Claims (3)
1. a mechanical type garbage incinerator grate furnace boiler tail flue gas recycling residual heat system, it is characterized in that, comprise circulating fan, circulation air path, circulation air path baffle plate, Secondary Air circulation air path, Secondary Air circulation air path baffle plate, dry fire grate circulation air path and dry fire grate circulation air path baffle plate; Described circulating fan is arranged on circulation air path, and the circulation air path baffle plate that regulates amount of circulating gas is housed on described circulation air path; One end of circulation air path connects mechanical type refuse incineration grate furnace boiler tail economizer exit flue, circulation air path other end bifurcation pipe and be connected to respectively Secondary Air main air duct and drying oven exhaust air box; On described Secondary Air circulation air path, be equipped with for regulating the Secondary Air circulation air path baffle plate of Secondary Air circulation air path exhaust gas volumn; On dry fire grate circulation air path, be equipped with for regulating the dry fire grate circulation air path baffle plate of dry fire grate circulation air path exhaust gas volumn.
2. the autocontrol method of a kind of mechanical type garbage incinerator grate furnace boiler tail flue gas recycling residual heat system according to claim 1, it is characterized in that, it is the basis based on domestic waste incineration automatic combustion control system, by three control loops, waste heat boiler tail flue gas recycling residual heat system is controlled: 1) according to furnace temperature, regulate Secondary Air circulation air path baffle plate on Secondary Air circulation air path, realize the flow-control of Secondary Air circulation air path; 2) required dry with air quantity according to entering incineration furnace garbage, regulate dry fire grate circulation air path baffle plate, realize dry fire grate circulation air path flow-control; 3) according to the flow-control of Secondary Air circulation air path and the flow-control of dry fire grate circulation air path, realize circulation air path and circulating fan flow-control.
3. a kind of mechanical type garbage incinerator grate furnace boiler tail flue gas recycling residual heat system according to claim 1, is characterized in that, described circulating fan is high-temperature blower.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410409851.1A CN104141958A (en) | 2014-08-20 | 2014-08-20 | Tail flue gas afterheat recycling system of mechanical waste incineration grate boiler and automatic control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410409851.1A CN104141958A (en) | 2014-08-20 | 2014-08-20 | Tail flue gas afterheat recycling system of mechanical waste incineration grate boiler and automatic control method thereof |
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| CN104141958A true CN104141958A (en) | 2014-11-12 |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104501174A (en) * | 2014-11-14 | 2015-04-08 | 浙江铂瑞能源环境工程有限公司 | Flue gas circulation drying type garbage incinerator |
| CN105465793A (en) * | 2015-12-31 | 2016-04-06 | 重庆科技学院 | Dual-layer mechanical grate type garbage gasifying incinerator and dual-boiler power generation system thereof |
| CN105465792A (en) * | 2015-12-29 | 2016-04-06 | 重庆科技学院 | Circulating air supply system of mechanical fire gate type waste gasification incinerator |
| CN105627322A (en) * | 2015-12-29 | 2016-06-01 | 重庆科技学院 | Mechanical grate type garbage gasification incineration system and disposal method thereof |
| CN105627323A (en) * | 2015-12-30 | 2016-06-01 | 重庆科技学院 | Mechanical fire grate type garbage gasification incinerator and dual-boiler system thereof |
| CN105627324A (en) * | 2015-12-31 | 2016-06-01 | 重庆科技学院 | Double-boiler power generating system capable of incinerating syngas through garbage gasification |
| CN105627320A (en) * | 2015-12-31 | 2016-06-01 | 重庆科技学院 | Mechanical grate type garbage gasification and incineration furnace and double-boiler power generation system |
| CN105782991A (en) * | 2016-05-17 | 2016-07-20 | 上海市环境工程设计科学研究院有限公司 | Efficient and clean incinerator |
| CN106196076A (en) * | 2016-08-12 | 2016-12-07 | 光大环保（中国）有限公司 | A kind of garbage combustion device |
| CN109099503A (en) * | 2018-09-06 | 2018-12-28 | 黑龙江赫尔特生物质能源发展有限公司 | Variable delivery, multi fuel, low emission, efficient modular therrmodynamic system |
| CN109764337A (en) * | 2019-03-07 | 2019-05-17 | 中国华能集团清洁能源技术研究院有限公司 | A Grate Furnace and Grate Furnace Clean Combustion Process Based on Flue Gas Recirculation System |
| CN111271714A (en) * | 2020-03-24 | 2020-06-12 | 中国恩菲工程技术有限公司 | Control method, device, device and readable storage medium for flue gas oxygen concentration |
| CN111322623A (en) * | 2020-04-07 | 2020-06-23 | 西安热工研究院有限公司 | A primary drying air control system and method for a mechanical grate waste incinerator |
| CN112032730A (en) * | 2020-08-18 | 2020-12-04 | 长春市恒建科为新能源发电有限公司 | System and method for recycling high-water-content household garbage by using high-temperature flue gas |
| JP2022089410A (en) * | 2020-12-04 | 2022-06-16 | 天翔 施 | Grate combustion system and grate combustion method |
| CN118129158A (en) * | 2024-04-09 | 2024-06-04 | 江苏名兴环保科技有限公司 | Smoke purifying device for incinerator |
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| CN204026686U (en) * | 2014-08-20 | 2014-12-17 | 上海康恒环境股份有限公司 | Mechanical type garbage incinerator grate furnace boiler tail flue gas recycling residual heat system |
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Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104501174A (en) * | 2014-11-14 | 2015-04-08 | 浙江铂瑞能源环境工程有限公司 | Flue gas circulation drying type garbage incinerator |
| CN105627322B (en) * | 2015-12-29 | 2017-10-13 | 重庆科技学院 | Stoker fired grate formula refuse gasification CIU and its processing method |
| CN105465792A (en) * | 2015-12-29 | 2016-04-06 | 重庆科技学院 | Circulating air supply system of mechanical fire gate type waste gasification incinerator |
| CN105627322A (en) * | 2015-12-29 | 2016-06-01 | 重庆科技学院 | Mechanical grate type garbage gasification incineration system and disposal method thereof |
| CN105627323A (en) * | 2015-12-30 | 2016-06-01 | 重庆科技学院 | Mechanical fire grate type garbage gasification incinerator and dual-boiler system thereof |
| CN105627320B (en) * | 2015-12-31 | 2017-10-31 | 重庆科技学院 | Double boiler electricity generation system based on stoker fired grate formula refuse gasification incinerator |
| CN105627324A (en) * | 2015-12-31 | 2016-06-01 | 重庆科技学院 | Double-boiler power generating system capable of incinerating syngas through garbage gasification |
| CN105465793A (en) * | 2015-12-31 | 2016-04-06 | 重庆科技学院 | Dual-layer mechanical grate type garbage gasifying incinerator and dual-boiler power generation system thereof |
| CN105627324B (en) * | 2015-12-31 | 2018-02-02 | 重庆科技学院 | The double boiler electricity generation system of synthesis gas is burned using refuse gasification |
| CN105627320A (en) * | 2015-12-31 | 2016-06-01 | 重庆科技学院 | Mechanical grate type garbage gasification and incineration furnace and double-boiler power generation system |
| CN105782991A (en) * | 2016-05-17 | 2016-07-20 | 上海市环境工程设计科学研究院有限公司 | Efficient and clean incinerator |
| CN105782991B (en) * | 2016-05-17 | 2019-02-01 | 上海市环境工程设计科学研究院有限公司 | High-efficiency cleaning incinerator |
| CN106196076A (en) * | 2016-08-12 | 2016-12-07 | 光大环保（中国）有限公司 | A kind of garbage combustion device |
| CN109099503B (en) * | 2018-09-06 | 2023-07-28 | 黑龙江赫尔特生物质能源发展有限公司 | Variable force, multi-fuel, low emission, high efficiency modular thermodynamic system |
| CN109099503A (en) * | 2018-09-06 | 2018-12-28 | 黑龙江赫尔特生物质能源发展有限公司 | Variable delivery, multi fuel, low emission, efficient modular therrmodynamic system |
| CN109764337A (en) * | 2019-03-07 | 2019-05-17 | 中国华能集团清洁能源技术研究院有限公司 | A Grate Furnace and Grate Furnace Clean Combustion Process Based on Flue Gas Recirculation System |
| CN111271714A (en) * | 2020-03-24 | 2020-06-12 | 中国恩菲工程技术有限公司 | Control method, device, device and readable storage medium for flue gas oxygen concentration |
| CN111322623A (en) * | 2020-04-07 | 2020-06-23 | 西安热工研究院有限公司 | A primary drying air control system and method for a mechanical grate waste incinerator |
| CN112032730A (en) * | 2020-08-18 | 2020-12-04 | 长春市恒建科为新能源发电有限公司 | System and method for recycling high-water-content household garbage by using high-temperature flue gas |
| CN112032730B (en) * | 2020-08-18 | 2025-02-18 | 长春市恒建科为新能源发电有限公司 | System and method for treating high-water content domestic waste by recirculating high-temperature flue gas |
| JP2022089410A (en) * | 2020-12-04 | 2022-06-16 | 天翔 施 | Grate combustion system and grate combustion method |
| CN118129158A (en) * | 2024-04-09 | 2024-06-04 | 江苏名兴环保科技有限公司 | Smoke purifying device for incinerator |
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Application publication date: 20141112 |
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