CN106016252A - Air heating furnace for grain drying tower - Google Patents
Air heating furnace for grain drying tower Download PDFInfo
- Publication number
- CN106016252A CN106016252A CN201610586588.2A CN201610586588A CN106016252A CN 106016252 A CN106016252 A CN 106016252A CN 201610586588 A CN201610586588 A CN 201610586588A CN 106016252 A CN106016252 A CN 106016252A
- Authority
- CN
- China
- Prior art keywords
- combustion chamber
- main chamber
- main combustion
- water
- burner
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C6/00—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C7/00—Combustion apparatus characterised by arrangements for air supply
- F23C7/02—Disposition of air supply not passing through burner
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/02—Regulating fuel supply conjointly with air supply
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention relates to an air heating furnace for a grain drying tower, which belongs to air heating furnaces. A combustor communicates with the interface of a main combustion chamber of a furnace body; a front arch is arranged in the main combustion chamber and above the interface; a secondary air duct is embedded in the bottom of the main combustion chamber; an heat insulation layer is laid on the secondary air duct; a high-temperature refractory material layer is arranged on the heat insulation layer; a tertiary air supply box is arranged at the bottom of the main combustion chamber; a tertiary air duct communicates with the tertiary air supply box; a back arch is arranged laterally between the main combustion chamber and a flue gas combustion chamber; a dedusting auger is arranged at the joint between the root of the back arch and the bottom of the furnace body; a dust discharge opening is formed in the bottom of a dust settling chamber; two observation openings are formed in the main combustion chamber; a pressure sensor is arranged in the flue gas combustion chamber; and a temperature sensor is arranged on a flue gas bridge. The air heating furnace has the advantages that the structure is novel; the combustion manner is changed to ensure that the speed of a combustion reaction is fast; the burnout rate can reach up to 97% or higher; and the thermal efficiency is improved to be about 95%.
Description
Technical field
The invention belongs to a kind of air stove, refer in particular to the air stove of grain drying tower.
Background technology
At present, the drying air stove used by grain drying tower is chain-type air stove, but the thermal efficiency of chain air stove only reaches about 70%, carbon residue about 15% in ash, coal burn-off rate is low, to currently used grain drying tower, because its boiler room structure is fixed, it is carried out big change the most difficult.
Summary of the invention
The present invention provides the air stove of a kind of grain drying tower, low to solve the coal burn-off rate of former chain air stove existence, the problem that efficiency of combustion is low.
nullThe present invention adopts the technical scheme that: include refractory brick body of heater、Body of heater channel-section steel skeleton，Top heat-insulation layer，There is firebreak heavy ash indoor，One observation panel one is set between firebreak and cigarette bridge，Bottom heavy ash room, cleaning door is set，Burner is connected with the interface of the main chamber of body of heater，Face arch is had in the main chamber on this interface top，Secondary blast pipe is buried underground bottom main chamber，Secondary blast pipe upper berth insulating，Insulating has the high-temperature flame-proof bed of material，Three times wind pushing box is positioned at bottom main chamber，Tertiary-air pipe is connected with three wind pushing box，Horizontally set rear arch between main chamber and smoke combustion room，Root at rear arch arranges dedusting auger with furnace bottom junction，Bottom heavy ash room, cleaning door is set，Main chamber has observation panel two，It is provided with pressure transducer in smoke combustion room，It is provided with temperature sensor at Yan Qiao；
The structure of burner of the present invention is: one time ajutage is attached with coal dust shower nozzle by flange, coal dust shower nozzle is fixing with maintenance door to be connected, maintenance door is connected with burner body by folding, hands is taken turns, screw telescopic bar, impeller inducer and air deflector link together and are installed in coal dust shower nozzle, burner body from-inner-to-outer is high-temperature flame-proof layer and water-cooled layer respectively, water pump is positioned in water tank, this water pump is connected with water-cooled layer by water pipe, secondary blast pipe is connected with burner body, fix internal with burner body of wind deflector is connected, and it is positioned at the oral area of secondary blast pipe, diesel oil ignitor is positioned at the outside of fire hole.
It is an advantage of the invention that novel structure, change combustion system, make its combustion velocity fast, burn-off rate can reach more than 97%, and its thermal efficiency brings up to about 95%, it is also possible to utilizes the furnace binding of former chain air stove, on the basis of former air stove not being changed greatly, change combustion system so that it is combustion velocity is fast, is saved greatly input cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the A-A sectional view of Fig. 1；
Fig. 3 is the B-B sectional view of Fig. 1；
Fig. 4 is the structural representation of burner of the present invention.
Detailed description of the invention
nullIncluding refractory brick body of heater 4、Body of heater channel-section steel skeleton 5，Top heat-insulation layer 15，Firebreak 12 is had in heavy ash room 18，One observation panel 1 is set between firebreak 12 and cigarette bridge 19，Bottom heavy ash room, cleaning door 14 is set，Burner 1 is connected with the interface 20 of the main chamber 16 of body of heater 4，Face arch 2 is had in the main chamber 16 on this interface top，Bottom main chamber, 7 bury secondary blast pipe 21 underground，Secondary blast pipe 21 upper berth insulating 8，Insulating 8 has the high-temperature flame-proof bed of material 6，Three times wind pushing box 23 is positioned at bottom main chamber，Tertiary-air pipe 22 is connected with three wind pushing box，Horizontally set rear arch 3 between main chamber 16 and smoke combustion room 17，Root at rear arch 3 arranges dedusting auger 9 with furnace bottom junction，Bottom heavy ash room, cleaning door 14 is set，Main chamber has observation panel 2 24，It is provided with pressure transducer 10 in smoke combustion room 17，It is provided with temperature sensor 11 at cigarette bridge 19；
nullThe structure of described burner 1 is: one time ajutage 1012 is attached with coal dust shower nozzle 102 by flange 107，Coal dust shower nozzle 102 is fixing with maintenance door 104 to be connected，Maintenance door 104 is connected with burner body 106 by folding，Handwheel 108、Screw telescopic bar 109、Impeller inducer 101 and air deflector 1010 link together and are installed in coal dust shower nozzle 102，Burner body 106 from-inner-to-outer is high-temperature flame-proof layer 1015 and water-cooled layer 1016 respectively，Water pump 1018 is positioned in water tank 1013，This water pump 1018 is connected with water-cooled layer 1016 by water pipe 1017，Secondary blast pipe 105 is connected with burner body 106，Fix internal with burner body 106 of wind deflector 1014 is connected、And it is positioned at the oral area of secondary blast pipe 105，Diesel oil ignitor 1011 is positioned at the outside of fire hole 103.
Operation principle: wind powder mixture is spurted in coal dust shower nozzle by an ajutage, by shunting after impeller inducer and air deflector and mixes with secondary blast, controls handwheel and drives screw telescopic bar
Movement keep the position of impeller inducer and air deflector, thus control the swirl strength of wind powder mixture, thus regulate the mixing of primary and secondary air, make wind powder mix homogeneously and enough pulverized coal particle suspension stay time, after diesel oil ignitor is lighted, flame along high-temperature flame-proof layer rotation spray penetrate, water pump by the water pump of water tank to water-cooled layer, the temperature of high-temperature flame-proof layer is reduced, it is ensured that the safety and stability of burner by the recirculated water of water-cooled layer；Face arch sprays forward to push down flame, horizontally set rear arch between main chamber and smoke combustion room, to be combusted stable after, start tertiary air, and progressively strengthen First air, secondary wind and tertiary air carry out stable burning, produced high-temperature flue gas returns into smoke combustion room by rear arch, cigarette bridge is entered by heavy ash room, heavy stay the lime-ash under rear arch and can start ash disposal auger at any time to remove, lime-ash bottom heavy ash room, can be removed by cleaning door when blowing out, indicated by pressure transducer, regulation secondary wind and the controlling potential device of tertiary air in time, control air output, flame combustion state can be controlled easily, indicated by temperature sensor, the controlling potential device of regulation coal pulverizer, control coal supply amount, chamber temperature and heating load can be controlled easily.
Claims (2)
- null1. the air stove of a grain drying tower，Including refractory brick body of heater、Body of heater channel-section steel skeleton，Top heat-insulation layer，There is firebreak heavy ash indoor，One observation panel one is set between firebreak and cigarette bridge，Bottom heavy ash room, cleaning door is set，It is characterized in that: burner is connected with the interface of the main chamber of body of heater，Face arch is had in the main chamber on this interface top，Secondary blast pipe is buried underground bottom main chamber，Secondary blast pipe upper berth insulating，Insulating has the high-temperature flame-proof bed of material，Three times wind pushing box is positioned at bottom main chamber，Tertiary-air pipe is connected with three wind pushing box，Horizontally set rear arch between main chamber and smoke combustion room，Root at rear arch arranges dedusting auger with furnace bottom junction，Bottom heavy ash room, cleaning door is set，Main chamber has observation panel two，It is provided with pressure transducer in smoke combustion room，It is provided with temperature sensor at Yan Qiao.
- The air stove of a kind of grain drying tower the most according to claim 1, it is characterized in that: the structure of described burner is: one time ajutage is attached with coal dust shower nozzle by flange, coal dust shower nozzle is fixing with maintenance door to be connected, maintenance door is connected with burner body by folding, hands is taken turns, screw telescopic bar, impeller inducer and air deflector link together and are installed in coal dust shower nozzle, burner body from-inner-to-outer is high-temperature flame-proof layer and water-cooled layer respectively, water pump is positioned in water tank, this water pump is connected with water-cooled layer by water pipe, secondary blast pipe is connected with burner body, fix internal with burner body of wind deflector is connected, and it is positioned at the oral area of secondary blast pipe, diesel oil ignitor is positioned at the outside of fire hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610586588.2A CN106016252A (en) | 2016-07-25 | 2016-07-25 | Air heating furnace for grain drying tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610586588.2A CN106016252A (en) | 2016-07-25 | 2016-07-25 | Air heating furnace for grain drying tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106016252A true CN106016252A (en) | 2016-10-12 |
Family
ID=57117356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610586588.2A Pending CN106016252A (en) | 2016-07-25 | 2016-07-25 | Air heating furnace for grain drying tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106016252A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106556005A (en) * | 2016-11-21 | 2017-04-05 | 中国五环工程有限公司 | The burning utilization of low heat value fixed gas and oxygen-enriched combusting method |
-
2016
- 2016-07-25 CN CN201610586588.2A patent/CN106016252A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106556005A (en) * | 2016-11-21 | 2017-04-05 | 中国五环工程有限公司 | The burning utilization of low heat value fixed gas and oxygen-enriched combusting method |
| CN106556005B (en) * | 2016-11-21 | 2019-03-15 | 中国五环工程有限公司 | The burning utilization of low heat value fixed gas and oxygen-enriched combusting method |
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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: 20161012 |
|
| WD01 | Invention patent application deemed withdrawn after publication |