CN113494844A - Waste gas waste heat recovery fuel energy-saving hot blast stove - Google Patents
Waste gas waste heat recovery fuel energy-saving hot blast stove Download PDFInfo
- Publication number
- CN113494844A CN113494844A CN202010226336.5A CN202010226336A CN113494844A CN 113494844 A CN113494844 A CN 113494844A CN 202010226336 A CN202010226336 A CN 202010226336A CN 113494844 A CN113494844 A CN 113494844A
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- Prior art keywords
- waste gas
- temperature
- gas recovery
- low
- chamber
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002912 waste gas Substances 0.000 title claims abstract description 84
- 238000011084 recovery Methods 0.000 title claims abstract description 53
- 239000002918 waste heat Substances 0.000 title claims abstract description 18
- 239000000446 fuel Substances 0.000 title claims abstract description 10
- 238000001035 drying Methods 0.000 claims abstract description 43
- 238000001816 cooling Methods 0.000 claims abstract description 34
- 239000000295 fuel oil Substances 0.000 claims abstract description 16
- 238000002485 combustion reaction Methods 0.000 claims abstract description 14
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000003546 flue gas Substances 0.000 claims abstract description 13
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000003063 flame retardant Substances 0.000 claims abstract description 6
- 239000000428 dust Substances 0.000 claims description 16
- 235000013339 cereals Nutrition 0.000 claims description 14
- 239000000779 smoke Substances 0.000 claims description 11
- 239000010903 husk Substances 0.000 claims description 7
- 235000007164 Oryza sativa Nutrition 0.000 claims description 5
- 240000008042 Zea mays Species 0.000 claims description 5
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 claims description 5
- 235000002017 Zea mays subsp mays Nutrition 0.000 claims description 5
- 235000005822 corn Nutrition 0.000 claims description 5
- 235000009566 rice Nutrition 0.000 claims description 5
- 230000001939 inductive effect Effects 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 240000007594 Oryza sativa Species 0.000 claims 1
- 239000007789 gas Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 4
- 241000209094 Oryza Species 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000010742 number 1 fuel oil Substances 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
- F26B21/002—Drying-air generating units, e.g. movable, independent of drying enclosure heating the drying air indirectly, i.e. using a heat exchanger
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H3/00—Air heaters
- F24H3/02—Air heaters with forced circulation
- F24H3/06—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators
- F24H3/08—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators by tubes
- F24H3/087—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators by tubes using fluid fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1854—Arrangement or mounting of grates or heating means for air heaters
- F24H9/1877—Arrangement or mounting of combustion heating means, e.g. grates or burners
- F24H9/1881—Arrangement or mounting of combustion heating means, e.g. grates or burners using fluid fuel
-
- 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
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention relates to a waste gas waste heat recovery fuel oil energy-saving hot blast stove. The machine body structure of the waste heat recovery air conditioner comprises a combustor (1), a combustion chamber (2), a waste gas recovery chamber (3), a heat exchanger (5), an air mixing chamber (8), a settling chamber (9), a flame-retardant plate (10), an air distribution door (13), a low-temperature waste gas recovery pipe (14), a cooling waste gas recovery pipe (15) and the like, wherein one side of an outer cylinder of the waste gas recovery chamber (3) is connected with the low-temperature waste gas recovery pipe (14), the other side of the outer cylinder of the waste gas recovery chamber is connected with the cooling waste gas recovery pipe (15), waste gas of a low-temperature drying section and waste gas of a cooling section respectively enter the waste gas recovery chamber (3) through the low-temperature waste gas recovery pipe (14) and the cooling waste gas recovery pipe (15), are mixed with high-temperature flue gas and reheated in the air mixing chamber (8), are changed into high-temperature hot air through heat exchange of the heat exchanger (5) to be supplied to a high-temperature drying section of a drying machine to dry grains, so as to realize waste heat recovery and utilization, compared with a waste heat recovery fuel-free hot air furnace, the waste gas waste heat recovery air furnace, the waste heat utilization of the drying machine is carried out by 20-30 percent, the fuel consumption is reduced by 15-25%, the energy-saving effect is remarkable, the drying cost is reduced, and the energy-saving heat source is an ideal matched heat source for grain, seed and feed dryers and the like.
Description
Technical Field
The invention relates to a heat source device for a dryer of grain, seed, oil and feed of agricultural machinery.
Background
The heat source devices matched with 2-grade and above hot air dryers for grains, seeds, oil and feed in the market at present are mostly coal-fired and oil-fired hot air furnaces, and then are fuel gas and biomass hot air furnaces, which are commonly brick-mixed masonry type coal-fired hot air furnaces and fuel gas hot air furnaces without waste gas waste heat recovery, the coal-fired hot air furnaces have serious environmental pollution and do not meet the national environmental protection requirements, and belong to products which are gradually eliminated under the environmental protection limitation at present, the fuel oil hot air furnaces without waste gas waste heat recovery comprise diesel oil, coal oil and the like, are greatly influenced by the environment, particularly during the drying in winter in the north, the environmental temperature is below 0 ℃, the lowest temperature is about-30 ℃, the fuel oil consumption is large and energy is not saved, the energy consumption of the dryer is high, the fuel cost is high, even the hot air dryers cannot be used due to high drying cost, and the like.
Disclosure of Invention
The invention aims to overcome the defects of the waste gas-free waste heat recovery fuel hot blast stove and provides a waste gas waste heat recovery fuel energy-saving hot blast stove. The fuel oil of the energy-saving hot blast stove is sprayed into a combustion chamber by a burner, the size of an air distribution door is adjusted to ensure that the fuel oil is fully combusted, under the negative pressure action of a high-temperature drying section fan, the waste gas of a low-temperature drying section of the dryer and the waste gas of a cooling section are sucked into a waste gas recovery chamber, the recovered waste gas is gradually heated and enters a wind mixing chamber to be mixed with high-temperature smoke and fire, part of dust, rice husks or corn husks and the like in the recovered waste gas are ignited and are blocked by a flame retardant plate when entering a settling chamber, the unburned rice husks or corn husks and the like fall into the settling chamber, high-temperature flue gas enters a heat exchanger through a high-temperature flue to exchange heat and then is discharged into the atmosphere through a chimney, cold air is changed into hot air after absorbing the heat on the surface of a pipeline through the heat exchanger, the hot air is sucked into a high-temperature drying section fan to be supplied to a high-temperature drying section of the dryer to dry grains, so that the burner is continuously sprayed and combusted, the energy-saving waste gas of the low-temperature drying section and the waste gas and the cooling section are continuously recovered to be heated and then supplied to the high-temperature drying section of the dryer, and the waste heat recovery and utilization are realized. Compared with a fuel hot blast stove without waste gas waste heat recovery, the energy-saving hot blast stove can recover 20-30% of waste gas waste heat of a dryer, save 15-25% of fuel consumption, and has obvious energy-saving effect, and because the temperature of the recovered low-temperature drying section waste gas is always 30-40 ℃ no matter the ambient temperature is high, the humidity of the waste gas is below 70%, the temperature of the cooling section is 8-30 ℃ and the humidity of the waste gas is below 50%, the lower the ambient temperature is, the more obvious the energy-saving effect is, and a series of problems of high fuel consumption, high energy consumption and the like are solved.
The technical scheme adopted by the invention for solving the technical problems is as follows: in the figures 1, 2 and 3, after the fuel oil is ignited in the burner (1), the burning flame continuously burns in the combustion chamber (2), the burning flame is sprayed out from the smoke and fire outlet (7) to enter the air mixing chamber (8), under the negative pressure of the smoke-inducing machine and the combined action of the low-temperature drying section fan and the cooling section fan, the low-temperature drying section waste gas and the cooling section waste gas respectively pass through the low-temperature waste gas recovery pipe (14) and the cooling waste gas recovery pipe (15), enter the waste gas recovery chamber (3) and then are mixed with the high-temperature flue gas in the air mixing chamber (8) for reheating, at the moment, part of dust, a small amount of light rice hulls or corn husks and the like carried in the low-temperature drying section waste gas and the cooling section waste gas are ignited and burnt, because of the blocking of the flame retardant plate (10), the dust and unburnt particles and the like generated by burning settle in the settling chamber (9), the high-temperature flue gas enters the heat exchanger (5) through the high-temperature flue (12) to heat all the heat exchanger pipelines, cold air absorbs heat on the surface of the pipeline after passing through the heat exchanger (5) to become hot air, and the hot air is sucked by the high-temperature drying section fan and then is sent to the high-temperature drying section of the drying machine to dry grains. Therefore, the fuel oil is combusted in the combustion chamber (2), is mixed with the low-temperature drying section waste gas and the cooling section waste gas in the air mixing chamber and then is reheated into high-temperature flue gas, the high-temperature flue gas is changed into high-temperature hot air through heat exchange of the heat exchanger (5) and is supplied to the high-temperature drying section for drying grains, the waste heat of the waste gas of the dryer is recycled, more heat consumed by sucking cold air is reduced, the fuel oil consumption is reduced, energy is saved, and the energy-saving and environment-friendly effects are achieved.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a front view of an energy-saving hot blast stove
FIG. 2 is a left side view of FIG. 1
FIG. 3 is a top view of FIG. 1
The part numbers in fig. 1, 2, 3 illustrate;
1. the device comprises a combustor, 2, a combustion chamber, 3, a waste gas recovery chamber, 4, a smoke exhaust pipe, 5, a heat exchanger, 6, a hot air outlet, 7, a smoke and fire outlet, 8, an air mixing chamber, 9, a settling chamber, 10, a flame retardant plate, 11, an ash cleaning door, 12, a high-temperature flue, 13, an air distribution door, 14, a low-temperature waste gas recovery pipe and 15, and a cooling waste gas recovery pipe.
Detailed Description
The following describes preferred embodiments of the present invention with reference to the accompanying drawings. In fig. 1, 2 and 3, the fuel oil energy-saving hot-blast stove is implemented as follows: after fuel oil is ignited in the combustor (1), the opening degree of an air distribution door (13) is adjusted to ensure that burning flame continuously and stably burns in a combustion chamber (2), high-temperature flue gas is sprayed out from a smoke and fire outlet (7) to enter a air mixing chamber (8), meanwhile, hot air generated by the burning of another fuel oil burner is directly supplied to a low-temperature drying section to dry grains, evaporated waste gas enters a low-temperature waste gas recovery pipe (14) through a drier dust settling chamber under the action of an air blower, simultaneously, after grains are cooled by a cooling section fan, cooling section waste gas enters a cooling waste gas recovery pipe (15) under the action of a fan, the low-temperature drying section waste gas and the cooling section waste gas respectively pass through the low-temperature waste gas recovery pipe (14) and the cooling waste gas recovery pipe (15) under the negative pressure action of a smoke inducing machine and under the combined action of the low-temperature drying section fan and the cooling section fan, are mixed with the high-temperature flue gas and reheated in the air mixing chamber (8) after entering a waste gas recovery chamber (3), at the moment, partial dust and a small amount of light rice hulls or corn husks carried in the waste gas of the low-temperature drying section and the waste gas of the cooling section are ignited and combusted, the dust and unburned particles generated by combustion are settled in a settling chamber (9) due to the blocking of a flame-retardant plate (10) and the reduction of the wind speed of high-temperature flue gas, the high-temperature flue gas enters a heat exchanger (5) through a high-temperature flue (12) to heat all heat exchanger pipelines, cold air absorbs the surface heat of the pipelines after passing through the heat exchanger (5) and becomes hot air, the hot air is sucked by a high-temperature drying section fan and then is sent to a high-temperature drying section of a dryer, a large amount of water vapor generated by heating grains is discharged outside the dryer, the non-settled trace light dust is sucked by a smoke inducing machine after passing through the heat exchanger (5) and then is discharged into the atmosphere through a chimney, and the dust falling into the bottom of the settling chamber (9) is cleaned and discharged or is discharged through a dust removing auger. Thus, the fuel oil is combusted in the combustion chamber (2), is mixed with the waste gas of the low-temperature drying section and the waste gas of the cooling section in the air mixing chamber, is heated into high-temperature flue gas, is changed into high-temperature hot air through heat exchange of the heat exchanger (5), and is supplied to the high-temperature drying section for drying grains. The clearance between the inner cylinder and the outer cylinder of the combustion chamber (2) is 200-600mm, the larger the heat productivity of the combustor (1), the larger the diameter of the inner cylinder and the outer cylinder of the combustion chamber (2), the larger the sectional area of the low-temperature waste gas recovery pipe (14) and the cooling waste gas recovery pipe (15), the length of the settling chamber (9) is more than 1500mm, dust and particles are favorably settled, and the heat exchanger (5) can be arranged above the fuel oil energy-saving hot blast stove and also can be arranged at a proper position on the ground.
Claims (2)
1. The utility model provides an energy-conserving hot-blast furnace of waste gas waste heat recovery fuel which characterized in that: the waste gas recovery device is matched with a hot air dryer of 2-level or above, one side of an outer cylinder of a waste gas recovery chamber (3) is connected with a low-temperature waste gas recovery pipe (14), the other side of the outer cylinder is connected with a cooling waste gas recovery pipe (15), waste gas of a low-temperature drying section and waste gas of a cooling section respectively enter the waste gas recovery chamber (3) through the low-temperature waste gas recovery pipe (14) and the cooling waste gas recovery pipe (15), then are mixed with high-temperature smoke gas in a wind mixing chamber (8) and reheated, are changed into high-temperature hot air through heat exchange of a heat exchanger (5) and are supplied to a high-temperature drying section of the dryer for drying grains, so that the waste gas of the low-temperature drying section and the waste gas of the cooling section are continuously recovered and then are supplied to the high-temperature drying section of the dryer, and waste heat recovery and utilization are realized.
2. The energy efficient hot blast stove according to claim 1, characterized in that: after fuel oil is ignited in the combustor (1), the opening degree of an air distribution door (13) is adjusted to ensure that burning flame continuously and stably burns in a combustion chamber (2), the burning flame is sprayed out from a smoke and fire outlet (7) to enter a wind mixing chamber (8), meanwhile, hot air generated by the burning of another fuel oil furnace combustor is directly supplied to a low-temperature drying section to dry grains, evaporated waste gas enters a low-temperature waste gas recovery pipe (14) through a drier dust settling chamber under the action of an air blower, simultaneously, after grains are cooled by a cooling section fan, cooling section waste gas enters a cooling waste gas recovery pipe (15) under the action of a fan, the low-temperature drying section waste gas and the cooling section waste gas enter a waste gas recovery chamber (3) through the low-temperature waste gas recovery pipe (14) and the cooling waste gas recovery pipe (15) respectively under the negative pressure action of a smoke inducing machine and under the combined action of the low-temperature drying section fan and the cooling section fan, and then are mixed with high-temperature flue gas and reheated in the wind mixing chamber (8), at the moment, partial dust and a small amount of light rice hulls or corn husks and the like carried in the waste gas of the low-temperature drying section and the waste gas of the cooling section are ignited and combusted, dust and unburnt particles and the like generated by combustion are settled in a settling chamber (9) due to the blocking of a flame-retardant plate (10), high-temperature flue gas enters a heat exchanger (5) through a high-temperature flue (12) to heat a pipeline of the heat exchanger, cold air absorbs the heat on the surface of the pipeline after passing through the heat exchanger (5) and becomes high-temperature hot air, the high-temperature hot air is sucked by a hot air blower of the high-temperature drying section and then is sent to a high-temperature drying section of a dryer to dry grains, a large amount of water vapor generated by heating the grains is discharged outside the dryer, the dust falling into the bottom of the settling chamber (9) is cleaned and discharged through a dust cleaning door (11) or is discharged through a dust removing auger, the gap between an inner cylinder and an outer cylinder of the combustion chamber (2) is 600mm, the larger heat productivity of the combustor (1), and the inner cylinder of the combustion chamber (2), The larger the diameter of the outer cylinder is, the larger the sectional areas of the low-temperature waste gas recovery pipe (14) and the cooling waste gas recovery pipe (15) are, the length of the settling chamber (9) is more than 1500mm, and the heat exchanger (5) can be arranged above the fuel oil energy-saving hot blast stove and also can be arranged at a proper position on the ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010226336.5A CN113494844A (en) | 2020-03-19 | 2020-03-19 | Waste gas waste heat recovery fuel energy-saving hot blast stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010226336.5A CN113494844A (en) | 2020-03-19 | 2020-03-19 | Waste gas waste heat recovery fuel energy-saving hot blast stove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113494844A true CN113494844A (en) | 2021-10-12 |
Family
ID=77993081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010226336.5A Pending CN113494844A (en) | 2020-03-19 | 2020-03-19 | Waste gas waste heat recovery fuel energy-saving hot blast stove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113494844A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2556458A1 (en) * | 1983-12-07 | 1985-06-14 | Comia Fao Sa | Dryer for cereals, which has an air-washing (scrubbing) and energy-recovery system |
| CN201726803U (en) * | 2010-08-03 | 2011-02-02 | 中国储备粮管理总公司 | Grain dryer waste gas recovery device |
| CN103134182A (en) * | 2013-03-25 | 2013-06-05 | 长春市霸航农机制造有限公司 | Waste gas recovering all-steel air-cooled type energy-saving hot blast furnace |
| CN204678861U (en) * | 2015-06-05 | 2015-09-30 | 郑州万谷机械有限公司 | Be applicable to single blower fan circulatory afterheat recycling device of small-size grain drying machinery |
| CN209068946U (en) * | 2018-11-05 | 2019-07-05 | 铁岭圣添机械有限公司 | A kind of grain drying tower warm air oil furnace |
| CN209944743U (en) * | 2019-04-16 | 2020-01-14 | 吉林市松花湖实业有限公司 | Hot-blast furnace and drying system |
-
2020
- 2020-03-19 CN CN202010226336.5A patent/CN113494844A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2556458A1 (en) * | 1983-12-07 | 1985-06-14 | Comia Fao Sa | Dryer for cereals, which has an air-washing (scrubbing) and energy-recovery system |
| CN201726803U (en) * | 2010-08-03 | 2011-02-02 | 中国储备粮管理总公司 | Grain dryer waste gas recovery device |
| CN103134182A (en) * | 2013-03-25 | 2013-06-05 | 长春市霸航农机制造有限公司 | Waste gas recovering all-steel air-cooled type energy-saving hot blast furnace |
| CN204678861U (en) * | 2015-06-05 | 2015-09-30 | 郑州万谷机械有限公司 | Be applicable to single blower fan circulatory afterheat recycling device of small-size grain drying machinery |
| CN209068946U (en) * | 2018-11-05 | 2019-07-05 | 铁岭圣添机械有限公司 | A kind of grain drying tower warm air oil furnace |
| CN209944743U (en) * | 2019-04-16 | 2020-01-14 | 吉林市松花湖实业有限公司 | Hot-blast furnace and drying system |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20211012 |