CN106765284A - A kind of negative pressure is ignited heat exchange preheating device - Google Patents

A kind of negative pressure is ignited heat exchange preheating device Download PDF

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Publication number
CN106765284A
CN106765284A CN201611182354.8A CN201611182354A CN106765284A CN 106765284 A CN106765284 A CN 106765284A CN 201611182354 A CN201611182354 A CN 201611182354A CN 106765284 A CN106765284 A CN 106765284A
Authority
CN
China
Prior art keywords
heat
burner hearth
heat transfer
preheating
economizer bank
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
Application number
CN201611182354.8A
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Chinese (zh)
Inventor
鞠纪恩
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Jizhi Energy Saving Environmental Protection Co Ltd
Original Assignee
Qingdao Jizhi Energy Saving Environmental Protection Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Qingdao Jizhi Energy Saving Environmental Protection Co Ltd filed Critical Qingdao Jizhi Energy Saving Environmental Protection Co Ltd
Priority to CN201611182354.8A priority Critical patent/CN106765284A/en
Publication of CN106765284A publication Critical patent/CN106765284A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23LSUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L15/00Heating of air supplied for combustion
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22STEAM GENERATION
    • F22BMETHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B31/00Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus
    • F22B31/08Installation of heat-exchange apparatus or of means in boilers for heating air supplied for combustion
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23QIGNITION; EXTINGUISHING-DEVICES
    • F23Q7/00Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs
    • F23Q7/02Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs for igniting solid fuel
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/22Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
    • F24H1/44Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with combinations of two or more of the types covered by groups F24H1/24 - F24H1/40 , e.g. boilers having a combination of features covered by F24H1/24 - F24H1/40
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/34Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

Abstract

A kind of negative pressure is ignited heat exchange preheating device, it is related to coal-burning boiler field, including burner hearth, blower fan, preheating pipeline and heat exchanging pipe, heat-insulation preheating layer and fluid heat transfer set are provided with outside the burner hearth, the heat-insulation preheating layer is arranged between the burner hearth and fluid heat transfer set, the heat exchanging pipe is tightly connected with the blower fan and the burner hearth respectively, and the preheating pipeline is connected with the burner hearth and the external world respectively;Can active control tracheae valve switch, improve efficiency, and layer chamber air-tightness is good, is difficult gas leakage.

Description

A kind of negative pressure is ignited heat exchange preheating device
Technical field
The present invention relates to coal-burning boiler field, and in particular to a kind of negative pressure is ignited heat exchange preheating device.
Background technology
Boiler is a kind of energy conversion, and the energy being input into boiler has chemical energy or electric energy in fuel, and boiler is defeated Go out the steam with certain heat energy, high-temperature water or organic heat carrier.Boiler is included in be filled with water pot and the burning fuel heated on fire Place stove two large divisions.The hot water or steam produced in boiler can be directly warm for needed for industrial production and people's lives are provided Can, also mechanical energy can be converted to by Steam Power Equipment, or electric energy converted mechanical energy into by generator again.
Existing coal-burning boiler is heated using the be filled with water traditional approach of pot of the direct combustion heating of open burner hearth.Its burning Heat exchange efficiency is low, it is impossible to heat energy in carrier is fully converted to after chemical energy is burnt.Also, the fuel such as the coal in open burner hearth Burning is influenced by ambient temperature big.Fuel is difficult to burn completely under low temperature, causes flue dust, carbon monoxide and sulfur monoxide etc. to be harmful to Material is discharged with flue gas, not only pollutes environment, also reduces combustion heat value.
The content of the invention
Low in order to solve prior art coal-burning boiler heat exchange efficiency, fuel cannot fully burn, influenced by ambient temperature big Problem, the present invention provides a kind of negative pressure and ignites heat exchange preheating device, can active control tracheae valve switch, improve efficiency, And layer chamber air-tightness is good, is difficult gas leakage.
A kind of negative pressure is ignited heat exchange preheating device, including burner hearth, blower fan, preheating pipeline and heat exchanging pipe, outside the burner hearth Heat-insulation preheating layer and fluid heat transfer set are provided with, the heat-insulation preheating layer is arranged at the burner hearth and the fluid heat transfer covers it Between, the heat exchanging pipe is tightly connected with the blower fan and the burner hearth respectively, it is described preheating pipeline respectively with the burner hearth and The external world is connected;
The heat exchanging pipe includes heat exchange heating coil and heat transfer flue, and the heat exchange heating coil is arranged at the fluid heat transfer set It is interior, and front end connects with the upper furnace, end connects with the heat transfer flue;The heat transfer flue end and the blower fan It is connected;
The preheating pipeline includes first, second, and third economizer bank, and the 3rd economizer bank is wrapped in the institute outside the burner hearth State in heat-insulation preheating layer, and end connects with the lower furnace portion, front end connects with second economizer bank;Second preheating Pipe is wrapped in the fluid heat transfer set and front end connects with first economizer bank;First economizer bank is set in described changing Heating flue is interior and is in communication with the outside.
Heat exchanging pipe working mechanism is:Burner hearth fuel combustion produces high-temperature flue gas, through the heating coil heat external fluid that exchanges heat, Heat exchanging fluid is used to heat, after be delivered to heat transfer flue, the first economizer bank in heating heat transfer flue, at the beginning of making inner air Heat, then pumps to the external world through blower fan.
Preheating pipeline working mechanism is:Outside air is pumped into the first economizer bank under suction function, preliminary through heat transfer flue Preheating;After be input into the second economizer bank, through two grades of fluid preheating in fluid heat transfer set;Enter the 3rd economizer bank afterwards, using in burner hearth Fuel combustion heat is directly heated to hot-air;High temperature air is finally delivered to burner hearth bottom, and rising contacts combustion with fuel Burn, heat release simultaneously produces high-temperature flue gas, into heat exchanging pipe.
Preferably, the fluid heat transfer set includes water delivery nozzle and water return outlet, and the heat exchange heating coil is wrapped in the fluid and changes In hot jacket top, second economizer bank is wrapped in the fluid heat transfer set bottom, and the water return outlet is arranged at the heat exchange Heating coil top, the water delivery nozzle is arranged between horizontal plane where the heat exchange heating coil and second economizer bank.The structure sets It is equipped with beneficial to the steps intensification of air, and the flue gas heat exchanged heat in heating coil can be preferentially used for heating fluid heating, promote Backflow, it is ensured that heating temperature.Preferably, the fluid is water, steam or conduction oil.
Further, the lower furnace portion is provided with grey comb, and the grey castor is arranged with electrothermal tube.The grey castor can be avoided Lower section electrothermal tube is covered by ashes, is improved electric heating and is ignited efficiency, and facilitates the electrothermal tube to extract maintenance out.Preferably, it is described Electric heating outer tube layer is quartz ampoule, includes carbon fiber heating silk.
Further, it is alternate with the 3rd economizer bank to be wound with hot-water line in the heat-insulation preheating layer outside the burner hearth. The primary heat that the hot-water line can be produced using burner hearth fuel combustion is heated, for boiling water or producing high temperature to steam Vapour.
The present invention brings the resultant effect to include:
The present invention can utilize blower fan and airtight pipeline, realize the negative pressure state in burner hearth and gas circuit, promote gas effective Flowing, not only contributes to the abundant burning of fuel, also eliminated the leakage hidden danger of harmful exhaust.The present invention utilizes multi-stage heat exchanger machine Structure, makes full use of burner hearth to transmit radiant heat and smoke convection heat, improves heating efficiency.The present invention also passes through multi-stage heat exchanger Mechanism carries out multistage preheating to the air for entering burner hearth, not only promotes the abundant burning of fuel, reduces the generation of harmful substance; And make air close to even more than fuel burning-point, improve fuel and ignite speed, realize speed heat in short-term.
Brief description of the drawings
Fig. 1 be the negative pressure of the embodiment of the present invention 1 ignite heat exchange preheating device internal structure schematic diagram.
Wherein, identical part identical reference in the accompanying drawings;Accompanying drawing is not drawn according to actual ratio.
Specific embodiment
The present invention is further illustrated with reference to the accompanying drawings and examples.
Embodiment 1
A kind of negative pressure is ignited heat exchange preheating device, as shown in figure 1, including burner hearth 1, blower fan 2, preheating pipeline 3 and heat exchanger tube Heat-insulation preheating layer 5 and fluid heat transfer set 6 are provided with outside road 4, the burner hearth 1, the heat-insulation preheating layer 5 is arranged at the burner hearth 1 And the fluid heat transfer set 6 between, the heat exchanging pipe 4 is tightly connected with the blower fan 2 and the burner hearth 1 respectively, described pre- Pipe line 3 is connected with the burner hearth 1 and the external world respectively;
The heat exchanging pipe 4 includes heat exchange heating coil 41 and heat transfer flue 42, and the heat exchange heating coil 41 is arranged at the fluid In Heat exchange jacekt 6, and front end connects with the top of the burner hearth 1, and end connects with the heat transfer flue 42;The end of the heat transfer flue 42 End is connected with the blower fan 2;
The preheating pipeline 3 includes first, second, and third economizer bank, and the 3rd economizer bank 33 is wrapped in outside the burner hearth In the heat-insulation preheating layer, and end connects with the bottom of the burner hearth 1, and front end connects with second economizer bank 32;Described Two economizer banks 32 are wrapped in the fluid heat transfer set 6 and front end connects with first economizer bank 31;First economizer bank 31 are set in the heat transfer flue 42 and are in communication with the outside.
The working mechanism of heat exchanging pipe 4 is:The fuel combustion of burner hearth 1 produces high-temperature flue gas, through the heat external of heating coil 41 that exchanges heat Fluid, heat exchanging fluid is used to heat, after be delivered to heat transfer flue 42, the first economizer bank 31 in heating heat transfer flue 42 makes Inner air initial heat, then pumps to the external world through blower fan 2.
Preheating the working mechanism of pipeline 3 is:Outside air is pumped into the first economizer bank 31 under suction function, through heat transfer flue 42 Preliminary preheating;After be input into the second economizer bank 32, through two grades of fluid preheating in fluid heat transfer set 6;Enter the 3rd economizer bank 33, profit afterwards Hot-air is directly heated with the fuel combustion heat of burner hearth 1;High temperature air is finally delivered to the bottom of burner hearth 1, and rise with Fuel catalytic combustion, heat release simultaneously produces high-temperature flue gas, into heat exchanging pipe 4.
The fluid heat transfer set 6 includes water delivery nozzle 61 and water return outlet 62, and the heat exchange heating coil 41 is wrapped in the fluid and changes In the top of hot jacket 6, second economizer bank 32 is wrapped in the fluid heat transfer and covers in 6 bottoms, and the water return outlet 62 is arranged at institute The top of heat exchange heating coil 41 is stated, the water delivery nozzle 61 is arranged on heat exchange heating coil 41 and the place horizontal plane of second economizer bank 32 Between.The structure setting is conducive to the steps intensification of air, and the flue gas heat exchanged heat in heating coil 41 can be preferentially used for confession Warm fluid is heated, and promotes backflow, it is ensured that heating temperature.The fluid is water.
The bottom of the burner hearth 1 is provided with ash comb 11, and the grey castor 11 is arranged with electrothermal tube 12.The grey castor 11 can be kept away Exempt from lower section electrothermal tube 12 to be covered by ashes, improve electric heating and ignite efficiency, and facilitate the electrothermal tube 12 to extract maintenance out.The electricity The outer layer of heat pipe 12 is quartz ampoule, includes carbon fiber heating silk.
It is alternate with the 3rd economizer bank 33 to be wound with hot-water line 51 in heat-insulation preheating layer 5 outside the burner hearth 1. The primary heat that the hot-water line 51 can be produced using burner hearth fuel combustion is heated, for boiling water or producing high temperature Steam.
Above with reference to preferred embodiment, invention has been described, but protection scope of the present invention is not restricted to This, any all technical schemes for falling within the scope of the appended claims are within the scope of the present invention.This hair is not being departed from In the case of bright scope, various improvement can be carried out to it and part therein can be replaced with equivalent.Especially, only Otherwise there is structural hazard, the every technical characteristic being previously mentioned in each embodiment can combine in any way.

Claims (5)

1. a kind of negative pressure is ignited heat exchange preheating device, it is characterised in that including burner hearth, blower fan, preheating pipeline and heat exchanging pipe, institute State and be provided with outside burner hearth heat-insulation preheating layer and fluid heat transfer set, the heat-insulation preheating layer is arranged at the burner hearth and the fluid is changed Between hot jacket, the heat exchanging pipe is tightly connected with the blower fan and the burner hearth respectively, it is described preheating pipeline respectively with it is described Burner hearth is connected with the external world;
The heat exchanging pipe includes heat exchange heating coil and heat transfer flue, and the heat exchange heating coil is arranged in the fluid heat transfer set, and Front end connects with the upper furnace, and end connects with the heat transfer flue;The heat transfer flue end is connected with the blower fan;
The preheating pipeline includes first, second, and third economizer bank, and the 3rd economizer bank is wrapped in the guarantor outside the burner hearth In warm preliminary heating zone, and end connects with the lower furnace portion, and front end connects with second economizer bank;Second economizer bank is twined It is wound in the fluid heat transfer set and front end connects with first economizer bank;First economizer bank is set in the heat exchange cigarette In road and it is in communication with the outside.
2. device according to claim 1, it is characterised in that:The fluid heat transfer set includes water delivery nozzle and water return outlet, institute State heat exchange heating coil to be wrapped in the fluid heat transfer set top, second economizer bank is wrapped in the fluid heat transfer set bottom Interior, the water return outlet is arranged at the heat exchange heating coil top, and it is pre- with described second that the water delivery nozzle is arranged on the heat exchange heating coil Between horizontal plane where heat pipe.
3. device according to claim 1 and 2, it is characterised in that:The lower furnace portion is provided with grey comb, under the grey castor It is provided with electrothermal tube.
4. device according to claim 3, it is characterised in that:The electric heating outer tube layer is quartz ampoule, and interior carbon fiber-containing adds Heated filament.
5. device according to claim 1, it is characterised in that:It is and described in heat-insulation preheating layer outside the burner hearth 3rd economizer bank is alternate to be wound with hot-water line.
CN201611182354.8A 2016-12-20 2016-12-20 A kind of negative pressure is ignited heat exchange preheating device Pending CN106765284A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201611182354.8A CN106765284A (en) 2016-12-20 2016-12-20 A kind of negative pressure is ignited heat exchange preheating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611182354.8A CN106765284A (en) 2016-12-20 2016-12-20 A kind of negative pressure is ignited heat exchange preheating device

Publications (1)

Publication Number Publication Date
CN106765284A true CN106765284A (en) 2017-05-31

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CN201611182354.8A Pending CN106765284A (en) 2016-12-20 2016-12-20 A kind of negative pressure is ignited heat exchange preheating device

Country Status (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107345657A (en) * 2017-08-18 2017-11-14 德清县德沃工业设备安装有限公司 A kind of water storage device of steam generator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107345657A (en) * 2017-08-18 2017-11-14 德清县德沃工业设备安装有限公司 A kind of water storage device of steam generator

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