CN201396766Y - Flue gas recirculation and low-position waste heat energy reutilization device for garbage incinerator - Google Patents
Flue gas recirculation and low-position waste heat energy reutilization device for garbage incinerator Download PDFInfo
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- CN201396766Y CN201396766Y CN2009200731317U CN200920073131U CN201396766Y CN 201396766 Y CN201396766 Y CN 201396766Y CN 2009200731317 U CN2009200731317 U CN 2009200731317U CN 200920073131 U CN200920073131 U CN 200920073131U CN 201396766 Y CN201396766 Y CN 201396766Y
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- Prior art keywords
- flue gas
- gas recirculation
- incinerator
- heat energy
- low
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N carbon monoxide Chemical compound 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[O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 82
- 239000003546 flue gases Substances 0.000 title claims abstract description 81
- 239000010813 municipal solid wastes Substances 0.000 title claims abstract description 30
- 239000002918 waste heat Substances 0.000 title abstract description 6
- 239000003570 air Substances 0.000 claims abstract description 35
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- 239000000428 dust Substances 0.000 abstract description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound 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Abstract
Description
Technical field
The utility model relates to the garbage incineration technology field, the device that particularly a kind of waste incineration and generating electricity energy utilizes again.
Background technology
The burning city domestic garbage generating has become the important technical of consumer waste innocent, minimizing, recycling treatment in more developed country, the world, waited until widely in the nearly more than ten years based on the waste incineration and generating electricity technology of grate furnace and used.General waste incineration grate furnace is divided into dry section, combustion zone, burning-out zone, all is with a wind supply of high temperature.In order to adapt to high-moisture, low-calorie rubbish, reduce the consumption of expensive auxiliary fuel, reduce cost, people have invented and have used the Steam Heating air, promptly steam pre-device technology, be transported to the dry section air compartment with the air after the heating, the rubbish oven dry of humidity is burned again,, reduce the generation of pollutant to guarantee that rubbish burns under sufficiently high temperature.But during in the face of the high rubbish of some complicated components, moisture content, because of moisture height, HCl content height,, often design higher exhaust gas temperature in the flue gas of incinerator for fear of the long-pending corrosion boiler heating surface that reveals, generally about 200 ℃-230 ℃, will cause the thermal efficiency of incinerator to reduce like this.Simultaneously, the low level used heat of existing waste incineration and generating electricity flue gas does not obtain well utilizing again, in some new technologies, the useless flue gas of useful extraction tail flue gas purifying dust-removing device outlet is made part secondary wind and is used, thereby part is utilized the energy of flue gas, reduce the consumption of air, reduce the generation of pollutant, improve the overall thermal efficient of incinerator.
In the existing disclosed document, as:
1, No. 31132 P91-P125 of Chemical Industry Press's Environmental Science and Engineering publishing centre Zhang Yi, Zhao Youcai chief editor " consumer waste incineration technology " ISBN7-5025-2894-6 China's depository library CIP data core word (2000);
2, teaching material Lee of institution of higher education of publishing house of Southeast China University tradition J.-D Herbell etc. writes No. 201477 P157-P168 of " modern solid waste comprehensive treatment technique " ISBN 978-7-5641-0866-3 China's depository library CIP data core word (2007).
Yet above-mentioned disclosed technology has following deficiency on engineering is used:
1, do not have flue gas recirculation low level waste heat utilization system, the incinerator thermal efficiency is low, and economic effect is poor;
2, flue gas recirculation heat energy utilization system, owing to extract flue gas from the outlet of tail flue gas purifying dust-removing device, the flue gas that incinerator produces is lowered the temperature through quench tower, available heat energy reduces, the heat energy utilization deficiency;
3, the flue gas recirculation hot flue gas that utilizes energy system to extract is delivered to incinerator and is used as part secondary wind, because the oxygen content of flue gas has only about 7-12%, compare much lowerly with the oxygen content 21% of air, can reduce the intensity of waste incineration like this, reduce the waste incineration temperature;
4, extract the high-order energy of steam that the dry moist rubbish of Steam Heating air needs consume valuable, reduced generated energy, influenced the economic benefit of garbage incinerating power plant;
5, with hot-air convection drying rubbish, because the content height of oxygen in the air, rubbish is caught fire in advance at dry section, the combustion intensity and the incineration temperature of combustion zone have been reduced, pollutant generates the concentration height, influences the safe operation of incineration furnace grate simultaneously and causes the waste incineration tempering to influence site safety easily and carry out production strictly in line with rules and regulations;
6, existing flue gas recirculation heat energy utilization system, owing to extract flue gas from the outlet of tail flue gas purifying dust-removing device, actual field arranges that the airduct road need pass whole flue gas purification system, pipeline is oversize, difficult arrangement, investment is big.
The utility model content
The purpose of this utility model is exactly in order to overcome the deficiencies in the prior art, utilizes the Lowlevel thermal energy in the useless flue gas that waste incineration produces, and improves the recycling efficient of waste incineration capacity of furnace, reduce the consumption of air, reduce the generation of pollutant, reach the purpose of energy-saving and emission-reduction, increase economic efficiency.
In order to achieve the above object, the technical scheme that the utility model adopted is as follows:
A kind of flue gas of garbage furnace recirculation low level waste thermal energy re-use device, comprise that flue gas recirculation pipeline, flue gas recirculation deduster and flue gas recirculation extract blower fan, described incinerator has dry section air compartment, burning-out zone air compartment and exhanst gas outlet, one end of described flue gas recirculation pipeline is connected with the exhanst gas outlet of described incinerator, the other end has two arms and is connected to the dry section air compartment and the burning-out zone air compartment of described incinerator respectively, and described flue gas recirculation deduster and flue gas recirculation extract blower fan and be arranged in the flue gas recirculation pipeline.
The beneficial effects of the utility model are: flue gas of garbage furnace recirculation Lowlevel thermal energy re-use device of the present utility model, the hot flue gas that the flue gas of garbage furnace outlet is produced removes dust with deduster, and be transported to incinerator dry section air compartment and burning-out zone air compartment with the extraction blower fan, thereby replace wind of high temperature, dry moist rubbish, the heat energy that provides burning-out zone carbon residue to burn and use oxygen and reclaim high temperature furnace slag reach the purpose of utilizing the low level waste thermal energy of flue gas by flue gas recirculation.Because what dry moist rubbish needed mainly is heat, do not need oxygen content, when rubbish is done, a wind crossing rich oxygen content causes rubbish to catch fire in advance easily, reduced the combustion intensity and the incineration temperature of combustion zone, pollutant generates the concentration height, influences the safe operation of incinerator, and hot flue gas just in time has enough heats, and low oxygen content makes rubbish be not easy to catch fire at dry section; And the carbon residue in the unburnt slag of burning-out zone only needs oxygen amount seldom, and bigger heat convection air quantity is taken away the heat of high temperature furnace slag.Thereby available waste heat flue gas substituting disposable wind, can reduce the consumption of air, optimize the combustion position in the stove, reduce the generation of pollutant, improve the energy utilization efficiency of incinerator, reduced the capacity and the power consumption of primary air fan, air-introduced machine, reduced the volume and the investment of steaming pre-device, because the exhaust gas volumn of flue gas of garbage furnace outlet reduces, and can save the process water of quench tower (tower of promptly lowering the temperature); And this installation cost is low, and on-the-spot layout is easy, and system is simple and reliable, and is easy to operate.
Description of drawings
For clearlyer understanding the purpose of this utility model, characteristics and advantage, below with reference to accompanying drawing preferred embodiment of the present utility model is described in detail, wherein:
Fig. 1 is the utility model flue gas recirculation low level waste thermal energy re-use device schematic diagram.
Description of reference numerals:
1, incinerator burner hearth 2, waste heat boiler 3, flue gas recirculation pipeline 4, flue gas recirculation deduster
5, flue gas recirculation extracts blower fan 6, dry section air compartment 7, combustion zone air compartment 8, burning-out zone air compartment
9, quench tower (tower of promptly lowering the temperature) 10, gas cleaning deduster 11, air-introduced machine 12, chimney
13, exhanst gas outlet
The specific embodiment
See also Fig. 1, the hot flue gas recirculation low level of incinerator of the present utility model waste thermal energy re-use device comprises flue gas recirculation pipeline 3, flue gas recirculation deduster 4 and flue gas recirculation extract blower fan 5, incinerator has dry section air compartment 6, burning-out zone air compartment 8 and exhanst gas outlet 13, one end of flue gas recirculation pipeline 3 is connected with the exhanst gas outlet 13 of incinerator, the other end has two arms and is connected to the dry section air compartment 6 and the burning-out zone air compartment 8 of incinerator respectively, and flue gas recirculation deduster 4 and flue gas recirculation extract blower fan 5 and be arranged in the flue gas recirculation pipeline 3.
Further, be initial with exhanst gas outlet 13, flue gas recirculation deduster 4 extracts blower fan 5 with flue gas recirculation and is successively set in the flue gas recirculation pipeline 3.
Wherein, incinerator burner hearth 1, waste heat boiler 2, combustion zone air compartment 7, quench tower 9 (tower of promptly lowering the temperature), gas cleaning deduster 10, air-introduced machine 11 and chimney 12 are the equipment in the existing refuse burning system, so repeat no more.
Flue gas of garbage furnace recirculation Lowlevel thermal energy re-use device of the present utility model, the hot flue gas that flue gas of garbage furnace outlet 13 is produced removes dust with flue gas recirculation deduster 4, and extract blower fan 5 with flue gas recirculation and be transported to incinerator dry section air compartment 6 and burning-out zone air compartment 8, thereby replace wind of high temperature, the rubbish of drying humidity, the heat energy that provides the burning-out zone burning to use oxygen and recovery high temperature furnace slag reach flue gas recirculation and the purpose of utilizing the low level waste thermal energy of flue gas.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200731317U CN201396766Y (en) | 2009-05-31 | 2009-05-31 | Flue gas recirculation and low-position waste heat energy reutilization device for garbage incinerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200731317U CN201396766Y (en) | 2009-05-31 | 2009-05-31 | Flue gas recirculation and low-position waste heat energy reutilization device for garbage incinerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201396766Y true CN201396766Y (en) | 2010-02-03 |
Family
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| CN2009200731317U CN201396766Y (en) | 2009-05-31 | 2009-05-31 | Flue gas recirculation and low-position waste heat energy reutilization device for garbage incinerator |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101943409A (en) * | 2010-09-26 | 2011-01-12 | 安徽金鼎锅炉股份有限公司 | Garbage incinerator |
| CN102966956A (en) * | 2012-11-13 | 2013-03-13 | 江苏欣润环境科技发展有限公司 | Three-section type Martin grate garbage incinerator |
| CN104141958A (en) * | 2014-08-20 | 2014-11-12 | 上海康恒环境股份有限公司 | Tail flue gas afterheat recycling system of mechanical waste incineration grate boiler and automatic control method thereof |
| CN104896482A (en) * | 2015-06-24 | 2015-09-09 | 天津机电进出口有限公司 | Smoke circulating combusting system for waste palm boiler |
| CN109028092A (en) * | 2018-06-15 | 2018-12-18 | 上海锅炉厂有限公司 | A kind of series coupled electricity generation system using fossil fuel Yu oxygen-enriched combusting rubbish |
| CN109028093A (en) * | 2018-06-15 | 2018-12-18 | 上海锅炉厂有限公司 | A kind of multipaths coupled electricity-generation system using fossil fuel Yu oxygen-enriched combusting rubbish |
-
2009
- 2009-05-31 CN CN2009200731317U patent/CN201396766Y/en not_active IP Right Cessation
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101943409A (en) * | 2010-09-26 | 2011-01-12 | 安徽金鼎锅炉股份有限公司 | Garbage incinerator |
| CN101943409B (en) * | 2010-09-26 | 2012-11-14 | 安徽金鼎锅炉股份有限公司 | Garbage incinerator |
| CN102966956A (en) * | 2012-11-13 | 2013-03-13 | 江苏欣润环境科技发展有限公司 | Three-section type Martin grate garbage incinerator |
| CN104141958A (en) * | 2014-08-20 | 2014-11-12 | 上海康恒环境股份有限公司 | Tail flue gas afterheat recycling system of mechanical waste incineration grate boiler and automatic control method thereof |
| CN104896482A (en) * | 2015-06-24 | 2015-09-09 | 天津机电进出口有限公司 | Smoke circulating combusting system for waste palm boiler |
| CN109028092A (en) * | 2018-06-15 | 2018-12-18 | 上海锅炉厂有限公司 | A kind of series coupled electricity generation system using fossil fuel Yu oxygen-enriched combusting rubbish |
| CN109028093A (en) * | 2018-06-15 | 2018-12-18 | 上海锅炉厂有限公司 | A kind of multipaths coupled electricity-generation system using fossil fuel Yu oxygen-enriched combusting rubbish |
| WO2019237869A1 (en) * | 2018-06-15 | 2019-12-19 | 上海锅炉厂有限公司 | Multi-process coupled power generation system combusting fossil fuel and oxygen-rich combustion waste |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Jie Wenxia Document name: Patent certificate of utility model |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100203 Termination date: 20110531 |