CN201672675U - Fluid bed oil and water double-medium circulation boiler - Google Patents

Fluid bed oil and water double-medium circulation boiler Download PDF

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Publication number
CN201672675U
CN201672675U CN2010201853441U CN201020185344U CN201672675U CN 201672675 U CN201672675 U CN 201672675U CN 2010201853441 U CN2010201853441 U CN 2010201853441U CN 201020185344 U CN201020185344 U CN 201020185344U CN 201672675 U CN201672675 U CN 201672675U
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CN
China
Prior art keywords
tube
burner hearth
inlet header
case
economizer
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Expired - Fee Related
Application number
CN2010201853441U
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Chinese (zh)
Inventor
李守泉
李平
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SHANDONG SHENGWEI NEW POWER CO Ltd
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SHANDONG SHENGWEI NEW POWER CO Ltd
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Priority to CN2010201853441U priority Critical patent/CN201672675U/en
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Publication of CN201672675U publication Critical patent/CN201672675U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a fluid bed oil and water double-medium circulation boiler, comprising a coal hopper, a blower and a furnace, wherein, a ceiling tube is arranged at the upper end of the furnace; a radiant tube and a secondary tuyere are arranged at the upper part of the hearth of the furnace, a cowl is arranged at the lower part of the hearth, an air preheater is arranged at the bottom of the hearth; a buried tube bundle is arranged under the radiant tube in the hearth, a hot water outlet header and a buried tube inlet header are respectively at both ends of the buried tube bundle; a cyclone separator and a convection tube stack are arranged in the flue at the tail of the hearth, a coal economizer tube bundle is arranged under the convection tube stack, a coal economizer outlet header and a coal economizer inlet header are respectively arranged at the upper end and the lower end of the coal economizer tube bundle; the coal economizer outlet header is communicated with the buried tube inlet header, the coal economizer inlet header is connected with a water inlet pipe. The utility model is environment-friendly, energy-conserving and long-lived, solving the problems of harmful gas is easily produced due to ultrahigh temperature of the furnace hearth, the flue gas has high temperature and the afterheat of the flue gas has low utilization rate.

Description

The two medium circulation boilers of fluid bed profit
Technical field the utility model belongs to the fluidized-bed combustion boiler technical field, relates to the two medium circulation boilers of a kind of fluid bed profit.
Background technology is present, it is main that China mostly is the organic heat carrier fluidized-bed combustion boiler greatly, comprise coal bunker, high temperature blower and the body of heater and the burner hearth that are made of steelframe, common brick layer and insulation material layer, the upper end is provided with roof tube in the body of heater, and the two ends of roof tube are provided with outlet collection case and top upper collecting chamber; The top of burner hearth is provided with radiant tube, the ligament of radiation is provided with overfiren air port, the bottom of burner hearth is provided with blast cap, the bottom of burner hearth is provided with air preheater, be provided with outlet flue below the air preheater, the preheated air outlet of air preheater is communicated with at the bottom of the burner hearth, and the inlet of cold air of air preheater is communicated with high temperature blower; Be provided with cyclone separator and convection tube group in the burner hearth back-end ductwork, the upper and lower side of convection tube group is respectively equipped with flow export collection case and inlet header case; Flow export collection case is communicated with radiant tube through radiation inlet header case by connecting the collection case; Said cyclone separator is communicated with the bottom of burner hearth through material returning device by tremie pipe; The inlet header case of convection tube group is communicated with heat medium circulation pump; The outlet collection case of roof tube be communicated with hot equipment.The fluidized-bed combustion boiler one of this structure is to exist furnace temperature to be difficult to control to cause the too high problem that is easy to generate pernicious gas of fire box temperature; The 2nd, there is the exhaust gas temperature height, the technical problem that the fume afterheat utilization rate is low.
Utility model content the purpose of this utility model is to solve prior art to have too high pernicious gas and the low technical problem of the high fume afterheat utilization rate of exhaust gas temperature of being easy to generate of fire box temperature, provide a kind of fluid bed profit two medium circulation boilers, to overcome the deficiencies in the prior art.
To achieve these goals, the two medium circulation boilers of the utility model fluid bed profit, be to improve realization on the basis of existing technology: it comprises coal bunker, high temperature blower and the body of heater and the burner hearth that are made of steelframe, common brick layer and insulation material layer, the upper end is provided with roof tube in the body of heater, and the two ends of roof tube are provided with outlet collection case and top upper collecting chamber; The top of burner hearth is provided with radiant tube, the gap of radiant tube is provided with overfiren air port, the bottom of burner hearth is provided with blast cap, the bottom of burner hearth is provided with air preheater, be provided with outlet flue below the air preheater, the preheated air outlet of air preheater is communicated with at the bottom of the burner hearth, and the inlet of cold air of air preheater is communicated with high temperature blower; Be provided with cyclone separator and convection tube group in the burner hearth back-end ductwork, the upper and lower side of convection tube group is respectively equipped with flow export collection case and inlet header case; Flow export collection case is communicated with radiant tube through radiation inlet header case by connecting the collection case; Said cyclone separator is communicated with the bottom of burner hearth through material returning device by tremie pipe; Its main points are to be provided with the pipe laying tube bank below the radiant tube in the described burner hearth, and the two ends of pipe laying tube bank are respectively equipped with hot water outlet collection case and pipe laying inlet header case; Be provided with the economizer tube bank below the convection tube group in the described burner hearth back-end ductwork, the upper and lower side of economizer tube bank is respectively equipped with economizer exit collection case and economizer inlet header case; Economizer exit collection case is communicated with pipe laying inlet header case, and economizer inlet header case is connected with water inlet pipe.
Described convection tube group is coiled to form side by side by three convection tubes.
Described pipe laying tube bank is made of side by side many pipe layings, and pipe laying is provided with fin.
The utility model beneficial effect compared with prior art is:
1, owing in fluid bed boiler furnace, set up pipe laying bundle 5, effectively controlled the temperature of burner hearth, avoided to produce pernicious gas because fire box temperature is too high;
2, flue gas greatly reduces exhaust gas temperature after process convection tube group, economizer tube bank and air preheater heat exchange, has improved the thermal efficiency of system.
Description of drawings Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model organic heat carrier circulatory system convection tube group structural representation;
Fig. 3 is the utility model pipe laying Pipe bundle structure schematic diagram;
Fig. 4 is the plan structure schematic diagram of Fig. 3;
Fig. 5 is the utility model pipe laying sectional structure schematic diagram.
Among the figure: 1, high pressure blower 2, blast cap 3, coal bunker 4, hot water outlet collection case 5, pipe laying tube bank 6, radiant tube 7, secondary wind 8, common brick layer 9, insulation material layer 10, outlet collection case 11, roof tube 12, top upper collecting chamber 13, cyclone separator 14, tremie pipe 15, connect collection case 16, to flow export collection case 17, convection tube group 18, radiation inlet header case 19, pipe laying inlet header case 20, material returning device 21, inlet header case 22, economizer exit collection case 23, economizer tube bank 24, economizer inlet header case 25, air preheater 26, outlet flue 27, preheated air outlet 28, inlet of cold air 29,30,31, convection tube 32, fin
The specific embodiment is with reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, the utility model comprises coal bunker 3, high temperature blower 1 and the body of heater and the burner hearth that are made of steelframe, common brick layer 8 and insulation material layer 9, the upper end is provided with roof tube 11 in the body of heater, and the two ends of roof tube 11 are provided with outlet collection case 10 and top upper collecting chamber 12; The top of burner hearth is provided with radiant tube 6, the gap of radiant tube is provided with overfiren air port 7, the bottom of burner hearth is provided with blast cap 2, the bottom of burner hearth is provided with air preheater 25, be provided with smoke 26 below the air preheater 25, the preheated air of air preheater 25 outlet 27 is communicated with at the bottom of the burner hearth, and the inlet of cold air 28 of air preheater 25 is communicated with high temperature blower 1; Be provided with cyclone separator 13 and convection tube group 17 in the burner hearth back-end ductwork, the upper and lower side of convection tube group 17 is respectively equipped with flow export collection case 16 and inlet header case 21; Flow export collection case 16 is communicated with radiant tube 6 through radiation inlet header case 18 by connecting collection case 15; Cyclone separator 13 is communicated with the bottom of burner hearth through material returning device 20 by tremie pipe 14; Be provided with pipe laying tube bank 5 below the radiant tube 6 in the burner hearth, the two ends of pipe laying tube bank 5 are respectively equipped with hot water outlet collection case 4 and pipe laying inlet header case 19; Be provided with economizer tube bank 23 below the convection tube group 17 in the burner hearth back-end ductwork, the upper and lower side of economizer tube bank 23 is respectively equipped with economizer exit collection case 22 and economizer inlet header case 24; Economizer exit collection case 22 is communicated with pipe laying inlet header case 19, and economizer inlet header case 24 is connected with water inlet pipe; Convection tube group 17 is coiled to form side by side by three convection tubes 29,30,31; Pipe laying tube bank 5 is made of side by side many pipe layings, and pipe laying is provided with fin 32.
Operation principle of the present utility model: divide by its endless form, can be divided into: the organic heat carrier circulatory system, combustion system, the flue dust circulatory system and water circulation system.
The organic heat carrier circulatory system: organic heat carrier is through heating agent oil circulating pump input inlet header case 21, inlet header case 21 is communicated with convection heating surface, convection heating surface is made of jointly many convection tube groups 17, every row's convection tube group is again by convection tube 30,31,32 form, it is long-pending so promptly to have increased convection heating surface, play simultaneously shunting action again, make velocity in pipes reach standard-required, enter convection current outlet collection case 16 after convection bank and the high-temperature flue gas heat exchange, by connection collection case 15 heat carrier is imported radiation inlet header case 18 then and distribute to each radiant tube uniformly, radiant tube by caliber identical several spiral under the requirement of satisfying design current velocity around and on, surround airtight rectangle furnace, the side towards the fire of pipe is formed radiation heating-surface jointly, with the fuel combustion liberated heat heat transmission being taken place directly, enter top upper collecting chamber 12 at last, arrives outlet collection case 10 by roof tube 11, be connected to hot user's heat exchange again, return again then and reheat.
Combustion system: fuel and lime stone mixture are delivered to coal through conveying device under the effect of coal feeding hole 3 deadweight and are entered burner hearth, high pressure blower 1 enters air preheater 25 and flue gas heat exchange from inlet of cold air 28, air after the preheating is connected to air compartment from the preheated air outlet 27 of air preheater 25, by blast cap 2 wind is sent into burner hearth uniformly again, enter the coal dust of burner hearth and the wind mixed combustion below the blast cap 2 under the deadweight effect, secondary air separating does not enter burner hearth by the coil pipe gap location, account for 40% of total air, be divided into, in, following three layers of layout, in order to burning and Control for Kiln Temperature, reduce NO xDischarging.When Ca/S can reach 90% usually than desulfuration efficiency 1.5~2.5 time.Whole burning is to carry out under low fluidising air velocity, and Control for Kiln Temperature is burnt at the burner hearth inner suspension at 900 ℃.
The flue dust circulatory system: the high-temperature flue gas of burner hearth internal combustion is mingled with the flue dust process cyclone separator 13 that molecule forms, cyclone separator 13 is by phosphate refractory brick and water material feeding and build by laying bricks or stones and form, and separated particle enters material returning device 20 through tremie pipe 14 and returns the burner hearth circulating combustion again.
Water circulation system: be introduced into economizer inlet header case 24 through the softening water of handling, distribute to the further heat exchange of flue gas of economizer tube bank 23 and process heat convection uniformly, discharge from economizer exit collection case 22 again and enter pipe laying inlet header case 19, burner hearth and thermal-flame direct heat transfer are directly stretched in each pipe laying tube bank 5, finally are connected to hot user from hot water outlet collection case 4.In order to reduce the wearing and tearing of pipe laying, improve pipe laying service life, adopt the bigger pipe laying of wall thickness, and around pipe laying, weld fin 32, can increase water-cooling wall like this, reduce the temperature of burner hearth, the generation of the pernicious gas of can drawing up again.
After testing: from the flue gas that outlet flue 26 is discharged, every index all meets national emission request.

Claims (3)

1. two medium circulation boilers of a fluid bed profit, it comprises coal bunker, high temperature blower and the body of heater and the burner hearth that are made of steelframe, common brick layer and insulation material layer, and the upper end is provided with roof tube in the body of heater, and the two ends of roof tube are provided with outlet collection case and top upper collecting chamber; The top of burner hearth is provided with radiant tube, the gap of radiant tube is provided with overfiren air port, the bottom of burner hearth is provided with blast cap, the bottom of burner hearth is provided with air preheater, be provided with outlet flue below the air preheater, the preheated air outlet of air preheater is communicated with at the bottom of the burner hearth, and the inlet of cold air of air preheater is communicated with high temperature blower; Be provided with cyclone separator and convection tube group in the burner hearth back-end ductwork, the upper and lower side of convection tube group is respectively equipped with flow export collection case and inlet header case; Flow export collection case is communicated with radiant tube through radiation inlet header case by connecting the collection case; Said cyclone separator is communicated with the bottom of burner hearth through material returning device by tremie pipe; It is characterized in that being provided with the pipe laying tube bank below the radiant tube in the described burner hearth, the two ends of pipe laying tube bank are respectively equipped with hot water outlet collection case and pipe laying inlet header case; Be provided with the economizer tube bank below the convection tube group in the described burner hearth back-end ductwork, the upper and lower side of economizer tube bank is respectively equipped with economizer exit collection case and economizer inlet header case; Economizer exit collection case is communicated with pipe laying inlet header case, and economizer inlet header case is connected with water inlet pipe.
2. the two medium circulation boilers of fluid bed profit according to claim 1 is characterized in that described convection tube group is coiled to form side by side by three convection tubes.
3. the two medium circulation boilers of fluid bed profit according to claim 1 is characterized in that described pipe laying tube bank is made of side by side many pipe layings, and pipe laying is provided with fin.
CN2010201853441U 2010-04-28 2010-04-28 Fluid bed oil and water double-medium circulation boiler Expired - Fee Related CN201672675U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010201853441U CN201672675U (en) 2010-04-28 2010-04-28 Fluid bed oil and water double-medium circulation boiler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010201853441U CN201672675U (en) 2010-04-28 2010-04-28 Fluid bed oil and water double-medium circulation boiler

Publications (1)

Publication Number Publication Date
CN201672675U true CN201672675U (en) 2010-12-15

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CN2010201853441U Expired - Fee Related CN201672675U (en) 2010-04-28 2010-04-28 Fluid bed oil and water double-medium circulation boiler

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102012097A (en) * 2010-04-28 2011-04-13 山东圣威新能源有限公司 Fluidized bed oil and water dual-medium circulation boiler
CN105485915A (en) * 2016-01-26 2016-04-13 哈尔滨哈锅锅炉工程技术有限公司 Flue gas waste heat recovery device applied to oil and gas fired boiler

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102012097A (en) * 2010-04-28 2011-04-13 山东圣威新能源有限公司 Fluidized bed oil and water dual-medium circulation boiler
CN102012097B (en) * 2010-04-28 2013-01-02 山东圣威新能源有限公司 Fluidized bed oil and water dual-medium circulation boiler
CN105485915A (en) * 2016-01-26 2016-04-13 哈尔滨哈锅锅炉工程技术有限公司 Flue gas waste heat recovery device applied to oil and gas fired boiler
CN105485915B (en) * 2016-01-26 2018-06-15 哈尔滨哈锅锅炉工程技术有限公司 A kind of flue gas waste heat recovery apparatus for oil-burning gas-fired boiler

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

Granted publication date: 20101215

Termination date: 20180428

CF01 Termination of patent right due to non-payment of annual fee