CN104654266B - Water boiler with single boiler barrel and four return strokes - Google Patents

Water boiler with single boiler barrel and four return strokes Download PDF

Info

Publication number
CN104654266B
CN104654266B CN201510064136.3A CN201510064136A CN104654266B CN 104654266 B CN104654266 B CN 104654266B CN 201510064136 A CN201510064136 A CN 201510064136A CN 104654266 B CN104654266 B CN 104654266B
Authority
CN
China
Prior art keywords
flue
drum
backhaul
threaded
tube
Prior art date
Application number
CN201510064136.3A
Other languages
Chinese (zh)
Other versions
CN104654266A (en
Inventor
何崇锋
张军
Original Assignee
昌图县锅炉制造厂
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 昌图县锅炉制造厂 filed Critical 昌图县锅炉制造厂
Priority to CN201510064136.3A priority Critical patent/CN104654266B/en
Publication of CN104654266A publication Critical patent/CN104654266A/en
Application granted granted Critical
Publication of CN104654266B publication Critical patent/CN104654266B/en

Links

Classifications

    • 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
    • Y02E20/30Technologies for a more efficient combustion or heat usage

Abstract

The invention discloses a water boiler with a single boiler barrel and four return strokes. The boiler comprises a furnace body, wherein a pot body is arranged in the furnace body, the pot body comprises a longitudinal boiler barrel, a left header, a right header, a descending pipe and a water wall tube group, the water wall tube group is formed by an inner side heat exchange tube group, a middle heat exchange tube group and an outer side heat exchange tube group, a threaded flue tube group is arranged in the boiler barrel, the threaded flue tube group in the boiler barrel is formed by an upper threaded flue tube group and a lower threaded flue tube group, after high-temperature flue gas generated by combustion of fuel in a hearth is subjected to heat exchange of four returns strokes in the furnace body in sequence, the high-temperature flue gas is discharged out of the furnace body. The water boiler with the single boiler barrel and the four return strokes has the advantages of long heat exchange stroke of the high-temperature flue gas and the water in the pot body, thorough heat exchange, low flue gas discharge temperature, thorough fuel combustion and low blackness level of the discharged flue gas.

Description

A kind of single drum four pass hot water boiler
Technical field
The present invention relates to a kind of hot-water boiler, especially a kind of single drum longitudinal smoke-fire-tube hot-water boiler.
Background technology
Single drum longitudinal smoke-fire-tube hot-water boiler is a kind of common hot-water boiler, and single drum of the prior art is longitudinal Formula smoke-fire-tube hot-water boiler generally adopts three backhaul designs, that is, the first backhaul be burner hearth face arch trailing edge to rear wall section by inner side water-cooled Wall pipe group, flue determined by drum bottom surface, the second backhaul is left wing's shape flue and the right flank shape flue of drum side-lower, the 3rd Backhaul is drum internal thread smoke pipe group flue, and the high-temperature flue gas that fuel combustion produces sequentially pass through three backhaul heat exchange heel row and come out of the stove Body.The boiler of this structure suffers from the drawback that:One is that high-temperature flue gas stroke of heat exchange in body of heater is shorter, be unfavorable for flue gas with The abundant heat exchange of water, smog discharge temperature is high, and energy loss is many;Two is that the combustible particles combust carried secretly in high-temperature flue gas is not thorough, Unburnt burnable granule is together discharged with flue gas, and fuel availability is low, and the flue gas containing unburnt burnable granule Meeting contaminated air, needs to arrange special dust arrester, can be only achieved discharge standard, increased the environmental protection cost of boiler;Three are The partial particulate carried secretly in flue gas can settle in wing flue and threaded flue, needs to carry out ash disposal cleaning every 23 weeks, The effective run time of impact boiler.
Additionally, high-temperature flue gas only have one in drum during common three backhaul list drum longitudinal smoke-fire-tube hot-water boiler work Backhaul heat exchange, therefore heat exchange be not thorough, and smog discharge temperature is higher, and due to no third backhaul air-supply arrangement, causes flue gas In burnable granule burning thorough, fuel availability is not high, and the flue gas blackness grade discharged is high, needs special flue gas to remove Dirt device can be only achieved discharge standard after processing, and, this boiler is only capable of selecting more than two class bituminous coal(Containing two class bituminous coal)'s Fuel, and be not suitable for selecting the smuts such as a class bituminous coal, brown coal.
Content of the invention
Invention technical problem to be solved is:There is provided a kind of single drum four pass hot water boiler, this single drum four backhaul heat Homogeneous solution-type reactor high-temperature flue gas are long with the water heat exchange stroke in pot, and thoroughly, smog discharge temperature is low for heat exchange, and fuel combustion is thorough, institute The flue gas blackness grade of discharge is low.
Solve the technical scheme that technical problem is taken:A kind of single drum four pass hot water boiler, including body of heater, in stove It is provided with pot in vivo, described pot includes drum, left header, right header, down-comer and the water screen tube group of longitudinal, described water Cold wall pipe group is made up of inner side set of heat exchange tubes, intermediate heat transfer pipe group and outside set of heat exchange tubes, is provided with threaded flue group in drum, Threaded flue group in drum is made up of upper threaded flue group and lower threaded flue group, the high temperature that fuel produces in stove chamber inner combustion Flue gas goes out body of heater through four backhaul heat exchange heel row in body of heater successively, the first backhaul be burner hearth face arch trailing edge to rear wall section by inner side Water screen tube group, flue determined by drum bottom surface, the second backhaul is left wing's shape flue and the right flank shape flue of drum side-lower, 3rd backhaul is the lower threaded flue group flue in drum, and the 4th backhaul is the upper threaded flue group flue in drum, in burner hearth Rear portion both sides are provided with the smokestack making the first backhaul flue gas enter the wing flue of the second backhaul, are provided with the wing cigarette of connection at front tube sheet Road outlet and the front lower smoke box of lower threaded flue group flue entrance, are provided with threaded flue group flue outlet under connection at back tube sheet With the rear revolution smoke box of upper threaded flue group flue entrance, it is provided with threaded flue group flue outlet in connection above front lower smoke box With the front upper smoke box of fume emission mouth, it is provided with the 3rd backhaul ajutage for high-temperature flue gas supplemental oxygen in front lower smoke box.
Improvement as the present invention:It is additionally provided with the analytical sampling pipe of collection high-temperature flue gas sample in front lower smoke box.
As a further improvement on the present invention:It is respectively provided with left wing's shape flue, right flank shape flue and supplement for high-temperature flue gas Second backhaul ajutage of oxygen.
Another improvement as the present invention:Intermediate heat transfer pipe group heat exchanger tube upper exposed in the middle part of wing flue, under Portion is exposed in burner hearth.
Another kind improvement as the present invention:Inner side set of heat exchange tubes is by staggered wall heat exchanger tube and furnace chamber heat exchange tube Constitute.
Beneficial effect:Single drum four pass hot water boiler of the present invention, due to employ the threaded flue group in drum by Upper threaded flue group and lower threaded flue group are constituted, and the high-temperature flue gas that fuel produces in stove chamber inner combustion are in body of heater successively through four Individual backhaul heat exchange heel row goes out body of heater, the first backhaul be burner hearth face arch trailing edge to rear wall section by interior side water wall tube group, drum bottom surface Determined by flue, the second backhaul is left wing's shape flue of drum side-lower and right flank shape flue, and the 3rd backhaul is in drum Lower threaded flue group flue, the 4th backhaul is the upper threaded flue group flue in drum, and being provided with burner hearth rear portion both sides makes first Backhaul flue gas enters the smokestack of the wing flue of the second backhaul, is provided with the wing flue outlet of connection and lower threaded flue at front tube sheet The front lower smoke box of group flue entrance, is provided with threaded flue group flue outlet and upper threaded flue group flue under connection at back tube sheet The rear revolution smoke box of entrance, is provided with before threaded flue group flue outlet and fume emission mouth in connection above front lower smoke box Smoke box, is provided with the technical characteristic of the 3rd backhaul ajutage for high-temperature flue gas supplemental oxygen in front lower smoke box, more single pot Cylinder longitudinal smoke-fire-tube hot-water boiler increased a threaded flue heat exchange backhaul, extends high-temperature flue gas and changes with the water in pot The stroke of heat, makes high-temperature flue gas more abundant with the water heat exchange in pot, reduces the exhaust temperature of flue gas, decreases heat energy and damages Lose;Come for entering the 3rd backhaul using the 3rd backhaul ajutage being provided with front lower smoke box as high-temperature flue gas supplemental oxygen simultaneously High-temperature flue gas supplemental oxygen, so that the unburnt combustible granules carried secretly in high-temperature flue gas is relayed in threaded flue Afterflame burns, until after-flame, improves the fuel availability of boiler, reduces the blackness levels of discharge flue gas, on the other hand can draw high Flue gas flow rate, prevents due to increasing a backhaul and the high-temperature flue gas that lead to pass through in threaded flue in long, flue gas Particulate matter in spiral smoke pipe stall settlement influence heat transfer effect.It is additionally provided with collection high temperature due to employing in front lower smoke box High-temperature flue gas in front lower smoke box can be entered in real time by the technical characteristic of the analytical sampling pipe of flue gas sample by analytical sampling pipe Row sample analysis, and the air output according to analysis result adjusting and optimizing the 3rd backhaul ajutage, make boiler keep optimal work State, on the one hand prevents that air output is excessive to lead to flue-gas temperature to decline and flue gas flow rate is too fast, heat exchange is not thorough;On the other hand anti- Only air output is too small can not provide necessary oxygen for the uncombusted combustible granules carried secretly in flue gas.Due to employing left and right It is provided with the technical characteristic of the second backhaul ajutage for high-temperature flue gas supplemental oxygen in wing flue, make to carry secretly in high-temperature flue gas The fuel gas of cigarette after-flame and particle can burn away in wing flue, and can by be deposited in wing flue Grain thing blows afloat so as to burning or together entering next backhaul with high-temperature flue gas, finally discharges body of heater, therefore, not only increases combustion The utilization rate of material, and extend the ash disposal cycle of wing flue, the wing cigarette of single drum four pass hot water boiler of the present invention The ash disposal cycle of road and threaded flue is 3 months, and commonly single wing flue of drum longitudinal smoke-fire-tube hot-water boiler and screw thread cigarette The ash disposal cycle of pipe is 2-3 week, not only reduces the maintenance cost of boiler, and improves the effective time of boiler.By In employing intermediate heat transfer pipe group heat exchanger tube upper exposed in the middle part of wing flue, technology in burner hearth for the bottom exposed is special Levy, so that the high-temperature flue gas in intermediate heat transfer pipe top and wing flue is fully contacted, heat exchange, and to the height in wing flue Warm flue gas carries out flow-disturbing, so that the air that supplement is come in is sufficiently mixed with high-temperature flue gas, is that flammable thing is combustion-supporting, meanwhile, high temperature cigarette Gas forms turbulent flow advance in wing flue, and heat transfer effect is more preferable.Due to employing inner side set of heat exchange tubes by staggered wall Face heat exchanger tube and the technical characteristic of furnace chamber heat exchange tube composition, make furnace chamber heat exchange tube full angle and thermal-flame or smoke contacts, with The combination of wall heat exchanger tube forms three-dimensional set of heat exchange tubes, further increases the efficiency of boiler.Single drum four backhaul of the present invention It is fuel that hot-water boiler can select two class bituminous coal, a class bituminous coal or brown coal, need not increase specially when using a class bituminous coal or brown coal The discharge standard that GB3271-2014 specifies can be reached with soot processing device.
Brief description
Fig. 1 is single drum four pass hot water boiler of the present invention along drum axial section structural representation;
Fig. 2 is that single drum four pass hot water boiler of the present invention radially partly cuts open structural representation along drum.
Specific embodiment
Below in conjunction with the accompanying drawings single drum four pass hot water boiler of the present invention is described in further detail.
As shown in Figure 1 and Figure 2, single drum four pass hot water boiler of the present invention is by body of heater and metal pan two large divisions's structure Become, body of heater includes the structures such as furnace wall, fire grate 8, coal bunker 7, air compartment 9, face arch 6, rear arch 17, and pot is arranged in body of heater, described pot Body includes longitudinal drum 12, left header 26, right header, down-comer and water screen tube group, be provided with drum water recovery apparatus 10, Discharging device 11, water replanishing device 18, are additionally provided with the auxiliary equipments such as safety valve, manhole, hand hole on drum.
As shown in Fig. 2 described water screen tube group is by inner side set of heat exchange tubes, intermediate heat transfer pipe group and outside set of heat exchange tubes structure Become, intermediate heat transfer pipe group heat exchanger tube 24 upper exposed in the middle part of wing flue, bottom exposed in burner hearth, inner side set of heat exchange tubes Be made up of staggered many endwalls face heat exchanger tube 23 and Duo Gen furnace chamber heat exchange tube 25, outside set of heat exchange tubes by paste furnace wall setting Many outside heat exchanger tubes 20 are constituted, and are provided with threaded flue group, the threaded flue group in drum is by upper threaded flue group in drum 14 and lower threaded flue group 13 constitute.
The high-temperature flue gas that fuel produces in stove chamber inner combustion go out body of heater through four backhaul heat exchange heel row in body of heater successively, the One backhaul I is burner hearth face arch trailing edge to 19 sections of rear wall by interior side water wall tube group, flue determined by drum bottom surface, the second backhaul II is left wing's shape flue 21 and the right flank shape flue of drum side-lower, and the 3rd backhaul III is the lower threaded flue group cigarette in drum Road, the 4th backhaul IV is the upper threaded flue group flue in drum, and being provided with burner hearth rear portion both sides makes the first backhaul flue gas enter The smokestack 16 of the wing flue of the second backhaul, is provided with the wing flue outlet of connection and lower threaded flue group flue entrance at front tube sheet Front lower smoke box 4, after being provided with threaded flue group flue outlet and upper threaded flue group flue entrance under connection at back tube sheet Revolution smoke box 15, is provided with the front upper smoke box of threaded flue group flue outlet and fume emission mouth 1 in connection above front lower smoke box 2, it is provided with the 3rd backhaul ajutage 5 for high-temperature flue gas supplemental oxygen and the sampling gathering high-temperature flue gas sample in front lower smoke box Analyzer tube 3, is respectively provided with the second backhaul ajutage 22 for high-temperature flue gas supplemental oxygen in left wing's shape flue, right flank shape flue.
Single drum four pass hot water boiler of the present invention is the height entering threaded flue by arranging the 3rd backhaul ajutage Warm flue gas supplemental oxygen, promotes uncombusted particle to burn away in the 3rd backhaul, until thorough after-flame, therefore, the list of the present invention Drum four pass hot water boiler can select two class bituminous coal, a class bituminous coal or brown coal as fuel, when using a class bituminous coal or brown When coal is as fuel, the particulate matter in flue gas all can thoroughly burn, and need not increase special fume dust remover, just can reach state The discharge standard of family's regulation.Because the air-supply of the 3rd backhaul ajutage accelerates flow velocity in threaded flue for the flue gas, it is to avoid The particulate matter carried secretly in flue gas settles formation dust stratification in threaded flue, but, short high-temperature flue gas are existed by the too fast contracting of flue gas flow rate The time of heat exchange in threaded flue, cause flue gas heat exchange insufficient, therefore, present invention employs four backhaul designs, by drum Threaded flue be divided into threaded flue group and lower threaded flue group, make high-temperature flue gas experience two backhaul heat exchange in drum, Increased flue gas stroke, overcome flue gas flow rate too fast and the drawbacks of be unfavorable for heat exchange.
Enter the second backhaul ajutage and the 3rd backhaul ajutage air should through the pre-heat treatment, so it can be avoided that Cryogenic air enters flue and absorbs flue gas heat, reduces flue-gas temperature.The mode of preheating can be by boiler smoke discharge Mouth setting air preheater, it would however also be possible to employ alternate manner is to the air entering the second backhaul ajutage and the 3rd backhaul ajutage Preheated.
Table 1 is commonly single drum longitudinal smoke-fire-tube water bath with same model for single drum four pass hot water boiler of the present invention Stove performance indications correction data.
Table 1
.

Claims (5)

1. a kind of single drum four pass hot water boiler, including body of heater, is provided with pot, described pot includes longitudinal in body of heater Drum, left header, right header, down-comer and water screen tube group, is characterized in that:Described water screen tube group by inner side set of heat exchange tubes, Intermediate heat transfer pipe group and outside set of heat exchange tubes are constituted, and are provided with threaded flue group, the threaded flue group in drum is by upper in drum Threaded flue group and lower threaded flue group are constituted, and the high-temperature flue gas that fuel produces in stove chamber inner combustion are in body of heater successively through four Backhaul heat exchange heel row goes out body of heater, and the first backhaul is for burner hearth face arch trailing edge to rear wall section by interior side water wall tube group, drum bottom surface institute The flue determining, the second backhaul is left wing's shape flue of drum side-lower and right flank shape flue, the 3rd backhaul be in drum under Threaded flue group flue, the 4th backhaul is the upper threaded flue group flue in drum, and being provided with burner hearth rear portion both sides makes first time Journey flue gas enters the smokestack of the wing flue of the second backhaul, is provided with the wing flue outlet of connection and lower threaded flue group at front tube sheet The front lower smoke box of flue entrance, is provided with threaded flue group flue outlet and upper threaded flue group flue under connection at back tube sheet and enters Mouthful rear revolution smoke box, be provided with cigarette on before threaded flue group flue outlet and fume emission mouth in connection above front lower smoke box Case, is provided with the 3rd backhaul ajutage for high-temperature flue gas supplemental oxygen in front lower smoke box.
2. single drum four pass hot water boiler according to claim 1, is characterized in that:It is additionally provided with collection in front lower smoke box The analytical sampling pipe of high-temperature flue gas sample.
3. single drum four pass hot water boiler according to claim 1 and 2, is characterized in that:In left wing's shape flue, right flank shape It is respectively provided with the second backhaul ajutage for high-temperature flue gas supplemental oxygen in flue.
4. single drum four pass hot water boiler according to claim 3, is characterized in that:Intermediate heat transfer pipe group heat exchanger tube top It is exposed to the middle part of wing flue, bottom exposed is in burner hearth.
5. single drum four pass hot water boiler according to claim 4, is characterized in that:Inner side set of heat exchange tubes is by being staggered Wall heat exchanger tube and furnace chamber heat exchange tube constitute.
CN201510064136.3A 2015-02-09 2015-02-09 Water boiler with single boiler barrel and four return strokes CN104654266B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510064136.3A CN104654266B (en) 2015-02-09 2015-02-09 Water boiler with single boiler barrel and four return strokes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510064136.3A CN104654266B (en) 2015-02-09 2015-02-09 Water boiler with single boiler barrel and four return strokes

Publications (2)

Publication Number Publication Date
CN104654266A CN104654266A (en) 2015-05-27
CN104654266B true CN104654266B (en) 2017-02-22

Family

ID=53245700

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510064136.3A CN104654266B (en) 2015-02-09 2015-02-09 Water boiler with single boiler barrel and four return strokes

Country Status (1)

Country Link
CN (1) CN104654266B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104848191B (en) * 2015-06-03 2017-01-04 陈小喜 The horizontal coal-fired steam boiler of modified model list drum

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB175737A (en) * 1920-11-18 1922-02-20 William Thomas Bell Improved construction of gas fired multitubular boiler
CN2033481U (en) * 1988-06-08 1989-03-01 大连轻工机械总厂 Water and smoke-tube boiler
CN2104409U (en) * 1991-06-10 1992-05-13 沈阳前进锅炉厂 Single-tube longitudinal shell type water-heating boiler
CN2385270Y (en) * 1998-03-14 2000-06-28 郭保林 Four or five return non-pressure boiler
CN201180981Y (en) * 2008-03-07 2009-01-14 常汝光 Bidirectional combustion environment friendly energy-saving horizontal steam/water boiler
CN101881433A (en) * 2009-05-05 2010-11-10 广州迪森热能技术股份有限公司 Steam boiler capable of burning biomass
CN101963345A (en) * 2010-09-30 2011-02-02 浙江圣普新能源科技有限公司 Chain mobile grate boiler for combustible biomass formed fuel
CN202204144U (en) * 2011-07-28 2012-04-25 山西奥通环保自动锅炉有限公司 Grate boiler burning coal and biomass fuels
CN202484960U (en) * 2012-01-18 2012-10-10 湖北孝锅节能设备有限责任公司 Boiler-shell-type water-fire tube boiler

Also Published As

Publication number Publication date
CN104654266A (en) 2015-05-27

Similar Documents

Publication Publication Date Title
CN103542415B (en) Cigarette pyrolysis kiln, stove combined type sludge incineration device
CN201836894U (en) Garbage incinerator
CN204693377U (en) High-moisture biomass fuel boiler
CN100570219C (en) Self-feeding and be the civil heating stove of fuel with the stalk briquette
CN102537975B (en) Circulating fluidized bed garbage incineration boiler and pollution control system with same
CN101949535B (en) Low-ratio biomass circulating fluidized bed boiler and combustion method thereof
CN201382408Y (en) Boiler flue gas recirculation device
CN203571721U (en) Combustion heating system taking biomass as fuel
CN201463253U (en) Double-furnace horizontal type industrial pulverized coal fired boiler
CN105889901B (en) A kind of fixed grate boiler for the square bale stalk that burns
CN205717165U (en) A kind of high-efficiency energy-saving biomass boiler
CN107166716A (en) The dust removal integrated small-sized biomass normal-pressure hot-water boiler of combustion heat-exchange
CN105864748A (en) Combined combustion system of chain boiler
CN106594713A (en) Anti-slagging biomass cascade conversion combustion device
CN102330993B (en) Composite structure for high-temperature spiral secondary air and arch in biomass fuel chain boiler
CN103267293B (en) A kind of refuse gasification boiler
CN101963345A (en) Chain mobile grate boiler for combustible biomass formed fuel
CN106224974A (en) Waste incineration processing system
CN201964387U (en) High-efficiency biomass-combusting electricity generating boiler
CN201526955U (en) Dedicated direct combustion boiler for biomass
CN109751592B (en) System and method for blending and burning semicoke in industrial coal-bed combustion furnace
CN201262420Y (en) Horizontal stalk boiler
CN102128446B (en) Boiler for carrying out mixed combustion on carbon black tail gas and coal
CN203757694U (en) Energy reservation, emission reduction and efficient combustion biomass boiler
CN101576245B (en) Chain-grate boiler for high-temperature combustion of biomass

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
COR Change of bibliographic data
CB03 Change of inventor or designer information

Inventor after: He Chongfeng

Inventor after: Zhang Jun

Inventor before: He Chongfeng

C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20170222

Termination date: 20180209