CN105757976A - Pulverized coal hot blast stove for drying grain - Google Patents
Pulverized coal hot blast stove for drying grain Download PDFInfo
- Publication number
- CN105757976A CN105757976A CN201610265530.8A CN201610265530A CN105757976A CN 105757976 A CN105757976 A CN 105757976A CN 201610265530 A CN201610265530 A CN 201610265530A CN 105757976 A CN105757976 A CN 105757976A
- Authority
- CN
- China
- Prior art keywords
- pulverized coal
- heater
- drying
- combustor
- ash
- Prior art date
- 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
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Classifications
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- 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
- F24H3/008—Air heaters using solid fuel
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B9/00—Preservation of edible seeds, e.g. cereals
- A23B9/08—Drying; Subsequent reconstitution
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- 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
- F24H9/189—Arrangement or mounting of combustion heating means, e.g. grates or burners using solid fuel
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
- F26B2200/06—Grains, e.g. cereals, wheat, rice, corn
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/80—Food processing, e.g. use of renewable energies or variable speed drives in handling, conveying or stacking
- Y02P60/85—Food storage or conservation, e.g. cooling or drying
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention relates to a pulverized coal hot blast stove for drying grain and belongs to the technical field of drying hot blast stoves.A flour mill is connected with one end of a cyclone type pulverized coal combustor, a combustion chamber is connected with the other end of the cyclone type pulverized coal combustor and connected with a stove body, a first fire baffle wall and a third fire baffle wall are fixedly connected with the upper portion of the stove body, an electric insertion plate is arranged blow an ash settling chamber and an ash accumulation hopper at the bottom of the combustion chamber, a screw conveyor is arranged below the electric insertion plate, a second fire baffle wall is fixedly connected with the bottom of the stove body, an inspection opening and an ash removing opening are located below the side face of the stove body, a first air supplementing opening is located in the side face of the combustion chamber, and a second air supplementing opening is located in the side face of the upper portion of the stove body.The pulverized coal hot blast stove for drying grain has the advantages that the structure is novel, the energy-saving effect is remarkable, a combustion reaction is complete, and important significance on environment protection is achieved; besides, cost can be reduced, and economic benefits can be improved; furthermore, the coal feeding amount and the air feeding amount can be adjusted, the temperature and pressure in the combustion chamber can be conveniently and stably controlled, and drying work in a drying tower can be stably carried out.
Description
Technical field
The invention belongs to drying air stove technical field, particularly relate to the pulverized coal hot air furnace for grain heat-drying.
Background technology
At present, the air stove that domestic foodstuff drying device uses, one is that fixed grate formula air stove is applicable to miniaturization, simple in construction, but fuel high-quality lump coal, price is high, and is artificial handwarmer, inapplicable maximization, soot emissions are black, have pollution, the thermal efficiency to only have 60%, carbon residue 20% in ash.The second is chain-arranged type coal-fired hot-blast stove, advantage is miniaturization, maximizing is all suitable for, raw coal can be burnt, the thermal efficiency reaches 70%, carbon residue about 15% in ash, with the calorific value that coal is more than two class bituminous coal 5000 kilocalories, can not be burnt low-order coal, brown coal, because calorific value is low, coal burn-off rate is low, and its efficiency of combustion is low.
Summary of the invention
The present invention provides a kind of grain heat-drying pulverized coal hot air furnace, can not burn low-order coal, brown coal solving original chain-arranged type coal-fired hot-blast stove, and coal burn-off rate is low, the problem that efficiency of combustion is low.
The present invention adopts the technical scheme that: flour mill is connected with cyclone type coal burner one end, this cyclone type coal burner other end is connected with combustor, combustor is connected with body of heater, firebreak one and firebreak three are fixed above with body of heater respectively to be connected, arranged below electronic plate in bottom of combustion chamber heavy ash room with ash bucket, this electronic plate conveying worm arranged below, firebreak two is fixing with bottom of furnace body to be connected, inspection socket and ash disposal mouth are positioned at below the side of body of heater, wind-supplying mouth one is positioned at the side of combustor, and wind-supplying mouth two is positioned at upper of furnace body side.
Described body of heater adopts refractory brick.
Described body of heater lateral outer is fixing connects Rhizoma Begoniae Willsonii layer, top covering silicate aluminum board, the fixing connection steel skeleton on the top of this silicate aluminum board.
The present invention by raw coal after pulverizer, add fan-type flour mill and be finely ground into coal dust, with the First air that coal pulverizer produces, coal burner is delivered to continuously through fine coal conveyance conduit, then igniting makes coal dust burn at burner internal, to be combusted stable after progressively open the valve of big combustion fan, the ignition district of fine coal is moved in combustor in burner, combustor is combustion with meagre oxygen, to reduce the generation of NOx；Add oxygen part again through wind-supplying mouth and reach abundant burning, firebreak is set in body of heater, burned flame and high-temperature flue gas are when by firebreak, burned flame and high-temperature flue gas are altered course and makes oarse-grained ash fall in the ash bucket of heavy ash room, dust gradation layering in ash bucket utilizes helical feed to discharge, high-temperature flue gas exports from the delivery outlet of body of heater, enter after entering heat-exchanging chamber top input channel in heat exchanger, carry out heat exchange, in order to clean for outside cold air is heated, cleaned air after heating enters in drying tower, in order to drying grain.
It is an advantage of the invention that novel structure, by utilizing coal at a low price, brown coal, reduce cost, fine coal is utilized to make fuel, sprayed by coal burner, coal dust is made to burn at burner hearth inner suspension, can to greatest extent with combustion air Homogeneous phase mixing, combustion velocity is fast, burning is completely, its efficiency is up to more than 95%, nearly 25% is exceeded than existing lump coal Grate-firing efficiency of combustion, energy-saving effect is notable, and due to fine coal sectional combustion in combustor and body of heater, combustion reaction is complete, environmental conservation is significant, and cost can be reduced, increase economic efficiency, and coal-supplying amount and the equal scalable of intake, can facilitate, stably control the temperature in combustor, pressure, drying tower inner drying working stability is conducive to carry out.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the A-A sectional view of Fig. 1, in figure:
Flour mill 1, cyclone type coal burner 2, combustor 3, firebreak 1, firebreak 25, firebreak 36, electronic plate 7, conveying worm 8, steel skeleton 9, body of heater 10, silicate aluminum board 11, Rhizoma Begoniae Willsonii 12, inspection socket and ash disposal mouth 13, wind-supplying mouth 1, wind-supplying mouth 2 15.
Detailed description of the invention
Flour mill 1 is connected with cyclone type coal burner 2 one end, this cyclone type coal burner 2 other end is connected with combustor 3, combustor 3 is connected with body of heater 10, firebreak 1 and firebreak 36 are fixed above with body of heater 10 respectively to be connected, arranged below electronic plate 7 in bottom of combustion chamber heavy ash room with ash bucket, this electronic plate 7 conveying worm 8 arranged below, firebreak 25 is fixing with bottom body of heater 10 to be connected, inspection socket and ash disposal mouth 13 are positioned at below the side of body of heater, wind-supplying mouth 1 is positioned at the side of combustor 3, and wind-supplying mouth 2 15 is positioned at upper of furnace body side；
Described body of heater 10 adopts refractory brick；
Described body of heater 10 lateral outer is fixing connects Rhizoma Begoniae Willsonii layer 12, top covering silicate aluminum board 11, the fixing connection steel skeleton 9 on the top of this silicate aluminum board.
Outside outfit equipment includes flour mill 1, coal burner 2, and increase by one section of combustor 3, arranging firebreak in body of heater in order to keep off ash mixed flow, and heavy ash room and ash bucket it is provided with in combustor bottom, the sidewall of body of heater and combustor further respectively has wind-supplying mouth, for supplemental oxygen, in order to ensure that coal dust is fully burned, it is provided with ash bucket in lower portion of furnace body heavy ash room, carry out ash discharge with conveying worm, inspection socket and ash disposal mouth are set in body of heater side, in order to inspection, dedusting.High-temperature flue gas exports from the delivery outlet of body of heater.
Claims (3)
1. a grain heat-drying pulverized coal hot air furnace, it is characterized in that: flour mill is connected with cyclone type coal burner one end, this cyclone type coal burner other end is connected with combustor, combustor is connected with body of heater, firebreak one and firebreak three are fixed above with body of heater respectively to be connected, arranged below electronic plate in bottom of combustion chamber heavy ash room with ash bucket, this electronic plate conveying worm arranged below, firebreak two is fixing with bottom of furnace body to be connected, inspection socket and ash disposal mouth are positioned at below the side of body of heater, wind-supplying mouth one is positioned at the side of combustor, wind-supplying mouth two is positioned at upper of furnace body side.
2. a kind of grain heat-drying pulverized coal hot air furnace according to claim 1, it is characterised in that: described body of heater adopts refractory brick.
3. a kind of grain heat-drying pulverized coal hot air furnace according to claim 1 and 2, it is characterised in that: described body of heater lateral outer is fixing connects Rhizoma Begoniae Willsonii layer, body of heater top covering silicate aluminum board, fixes on the top of this silicate aluminum board and connects steel skeleton.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610265530.8A CN105757976A (en) | 2016-04-26 | 2016-04-26 | Pulverized coal hot blast stove for drying grain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610265530.8A CN105757976A (en) | 2016-04-26 | 2016-04-26 | Pulverized coal hot blast stove for drying grain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105757976A true CN105757976A (en) | 2016-07-13 |
Family
ID=56324917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610265530.8A Pending CN105757976A (en) | 2016-04-26 | 2016-04-26 | Pulverized coal hot blast stove for drying grain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105757976A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106500466A (en) * | 2016-12-13 | 2017-03-15 | 南通林赛尔机械有限公司 | A kind of gloves drying system of efficient accurate temperature controlling |
-
2016
- 2016-04-26 CN CN201610265530.8A patent/CN105757976A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106500466A (en) * | 2016-12-13 | 2017-03-15 | 南通林赛尔机械有限公司 | A kind of gloves drying system of efficient accurate temperature controlling |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160713 |
|
| WD01 | Invention patent application deemed withdrawn after publication |