CN203148019U - High-efficiency coal powder gasification and coal powder compound combustion hot water boiler - Google Patents

High-efficiency coal powder gasification and coal powder compound combustion hot water boiler Download PDF

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Publication number
CN203148019U
CN203148019U CN2012204730866U CN201220473086U CN203148019U CN 203148019 U CN203148019 U CN 203148019U CN 2012204730866 U CN2012204730866 U CN 2012204730866U CN 201220473086 U CN201220473086 U CN 201220473086U CN 203148019 U CN203148019 U CN 203148019U
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CN
China
Prior art keywords
coal powder
coal dust
boiler
burner hearth
gasification
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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.)
Expired - Fee Related
Application number
CN2012204730866U
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Chinese (zh)
Inventor
赵敬
王永涛
王明君
王小蒙
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QINGDAO KINGLLI BOILER CO Ltd
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QINGDAO KINGLLI BOILER CO Ltd
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Priority to CN2012204730866U priority Critical patent/CN203148019U/en
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Publication of CN203148019U publication Critical patent/CN203148019U/en
Expired - Fee Related legal-status Critical Current
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    • 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
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/10Process efficiency
    • Y02P20/129Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines

Abstract

The utility model discloses a high-efficiency coal powder gasification and coal powder compound combustion hot water boiler, which comprises the following components: a blower fan, a coal powder chamber, coal powder conveying pipeline, a combustor, a gasification chamber, a hearth, a horizontal flue, a tail vertical shaft and boiler columns. The blower fan is connected with the coal powder chamber and is connected with the gasification chamber through the coal powder conveying pipeline. The combustor is mounted on the gasification chamber. The gasification chamber, the hearth, the horizontal glue and the tail vertical shaft are successively connected; and are mounted on the boiler columns for forming a pi-shaped integral member. A non-combusted belt is configured above the connection part between the hearth and the gasification chamber. The bottom of the hearth is provided with a jet air inlet and a secondary air inlet. The outlet of the non-combusted belt is provided with a tertiary air inlet. The horizontal flue is internally provided with a heater. The tail vertical shaft is internally provided with a convection tube bundle, a coal economizer and an air preheater. The high-efficiency coal powder gasification and coal powder compound combustion hot water boiler has the following advantages: reducing space, reducing dust discharge, realizing conveying in gas state, obtaining higher combustion stability, obtaining high coal powder burnout rate up to 99%, and realizing high thermal efficiency up to 95%.

Description

A kind of efficient coal dust gasification and coal dust compound combustion hot-water boiler
Technical field
The utility model relates to boiler manufacturing technology field, relates in particular to a kind of efficient coal dust gasification and coal dust compound combustion hot-water boiler.
Background technology
Middle-size and small-size coal-burned industrial boiler is the main with coal equipment of China, and surplus the whole nation nearly 500,000, total capacity reaches 2,000,000 tons, about 400,000,000 tons of year coal consumption, and great majority are chain grate boiler.The evenly heat efficient of these boilers scarcely surpasses 70%, and the general environmental practice of these boilers is simple and crude simultaneously, and powder (cigarette) dirt, SO2, NOx can not qualified discharges, and regional coal pollutes very serious.Along with China's rapid development of economy, to build the remarkable quickening of economizing type well-off society paces, and satisfy the strong energy-saving and environmental protection hope of the whole society, the technological progress of middle-size and small-size coal-burned industrial boiler has become problem extremely to be solved.
Middle-size and small-size efficient industrial coal powder boiler technological system, though be higher than grate firing and chain-grate boiler far away in efficiency of combustion and the thermal efficiency, Actual combustion efficient and operating thermal efficiency also need to improve again.Current coal dust gasification burning boiler, great majority are the technological transformations that are used in chain-grate boiler, do not have what improvement in the structural configuration of boiler.Have following problem: needs are equipped with coal gasification equipment, increase equipment investment, and the operational management workload is big; Because burner hearth is lower, thereby influence the burn-off rate of the unburnt high-temperature flue gas of coal dust.
Summary of the invention
In order to solve the problems of the prior art, the purpose of this utility model provides a kind of efficient coal dust gasification and coal dust compound combustion hot-water boiler.
For achieving the above object, the technological means that the utility model adopts is: a kind of efficient coal dust gasification and coal dust compound combustion hot-water boiler, comprise air blast, Pulverized Coal Bin, power transportation pipe, burner, vaporizer, burner hearth, horizontal flue, tail vertical well, boiler pillar, described air blast connects Pulverized Coal Bin, and connects vaporizer by power transportation pipe; Described burner is installed on the vaporizer; Described vaporizer, burner hearth, horizontal flue, tail vertical well connect successively, and are installed in formation ∏ type on the boiler pillar; Described not combustion band is arranged in burner hearth and top, vaporizer junction, is provided with jet wind entrance, secondary wind entrance at burner hearth bottom, in described not combustion band exit the tertiary air entrance is set; In described horizontal flue, be provided with heater; In described tail vertical well, be provided with convection bank, economizer and air preheater.
Further, described burner hearth arranges 5~30 meters of height, and the water-cooling wall tube bank is set around it.
Further, also be provided with cool air inlet, hot air outlet, exhanst gas outlet, fire door, procuratorial work door on the described tail vertical well; Described burner hearth is provided with flame-observing hole; Described boiler pillar is provided with the platform staircase, is used for observing and maintenance.
Further, described burner hearth and tail vertical well bottom is provided with ash port.
Further, described burner hearth and horizontal flue junction also are provided with drum, and described drum connects water-cooling wall tube bank and heater.
The beneficial effects of the utility model are: by the ∏ type that vaporizer, burner hearth, horizontal flue, tail vertical well are in turn connected to form, arrange the specific condition that adapts to coal dust gasification burning after-flame fully, efficiency of combustion and thermal efficiency height; This structure can be saved the space, be conducive to the sedimentation of dust in the flue gas again, reduce the initial ejection concentration of boiler smoke, realized the gasification conveying, the high-efficiency cleaning compound burning technology is broken through coal dust at vaporizer gasification and coal dust compound combustion, unburnt high-temperature flue gas is abundant after-flame in high burner hearth, improved the burn-off rate of coal dust, and made burning more stable, and Load Regulation is convenient, the coal dust burn-off rate reaches more than 99%, and the hot-water boiler thermal efficiency reaches more than 95%.
Description of drawings
Below in conjunction with accompanying drawing the technical solution of the utility model is described.
Fig. 1 is structural representation of the present utility model.
Among the figure: 1, air blast, 2, Pulverized Coal Bin, 3, power transportation pipe, 4, burner, 5, vaporizer, 6, burner hearth, 60, combustion band, 61, jet wind entrance, 62, secondary wind entrance, 63, tertiary air entrance, 64, water-cooling wall tube bank, 65, flame-observing hole, 7, horizontal flue, 71, heater, 8, tail vertical well, 81, convection bank, 82, economizer, 83, air preheater, 84, cool air inlet, 85, hot air outlet, 86, exhanst gas outlet, 87, fire door, 88, procuratorial work door, 9, the boiler pillar, 91, the platform staircase, 10, ash port, 11, drum.
The specific embodiment
A kind of efficient coal dust gasification as shown in Figure 1 and coal dust compound combustion hot-water boiler, comprise air blast 1, Pulverized Coal Bin 2, power transportation pipe 3, burner 4, vaporizer 5, burner hearth 6, horizontal flue 7, tail vertical well 8, boiler pillar 9, described air blast 1 connects Pulverized Coal Bin 2, and connects vaporizer 5 by power transportation pipe 3; Described burner 4 is installed on the vaporizer 5; Described burner hearth 6, vaporizer 5, horizontal flue 7, tail vertical well 8 connect successively, and are installed in formation ∏ type on the boiler pillar 9; Described not combustion is with 60 to be arranged in burner hearth 6 and top, vaporizer 5 junctions, is provided with jet wind entrance 61, secondary wind entrance 62 in burner hearth 6 bottoms, is with 60 exits that tertiary air entrance 63 is set in described not combustion; In described horizontal flue 7, be provided with heater 71; Be provided with convection bank 81, economizer 82 and air preheater 83 8 li of described tail vertical well.
Further, described burner hearth 6 arranges 5~30 meters of height, and water-cooling wall tube bank 64 is set around it.
Further, also be provided with cool air inlet 84, hot air outlet 85, exhanst gas outlet 86, fire door 87, procuratorial work door 88 on the described tail vertical well 8; Described burner hearth 6 is provided with flame-observing hole 65; Described boiler pillar 9 is provided with platform staircase 91, is used for observing and maintenance.
Further, described burner hearth 6 and tail vertical well 8 bottoms are provided with ash port 10.
Further, described burner hearth 6 also is provided with drum 11 with horizontal flue 7 junctions, and described drum 11 connects water-cooling wall tube bank 64 and superheater 71.
Described burner 4 is by oil or gas, the temperature of vaporizer 5 is increased to 500 ℃~600 ℃, the fine breeze that air blast 1 will be stored in the Pulverized Coal Bin 2 is delivered to vaporizer 5 by power transportation pipe 3, coal dust at high temperature gasifies, and partial combustion, burner 4 still burns combustion-supporting, when vaporizer 5 exit gas temperatures rise to 900 ℃ of left and right sides, cut off oil or the gas of burner 4, this moment, coal dust entered the gasification, and combustion process of stablizing, unburnt high-temperature flue gas after the coal dust gasification burning tangentially enters the not combustion that is provided with refractory concrete in burner hearth 6 burner hearth herein and is with 60, ignition temperature is up to 1600 ℃, high-speed jet wind entrance 61 by being arranged in burner hearth bottom and the strong turbulent flow of secondary wind entrance 62 also fully mix, the fuel active combustion, be furnished with tertiary air entrance 63 in the outlet of not firing with 60 simultaneously, make the abundant after-flame of unburnt fuel, because the vertical height of burner hearth 6 is up to 5~30 meters, about 10 seconds of unburnt high-temperature flue gas time of staying in burner hearth 6, under 1600 ℃ high temperature on the one hand fully after-flame the enough time is provided, ash content is fallen after rise as far as possible to burner hearth 6 bottoms, and discharge boiler by ash port 10; Boiler general layout is the ∏ structure, and arranging in the upper level flue 7 can increase heating surface area by heater 71, improves boiler thermal output; Water-cooling wall tube bank 64 is set around the burner hearth 6, arrange convection bank 81 in the tail vertical well 8, economizer 82, air preheater 83 effectively increases the heat exchange area of heating surface, lowered the exhaust gas temperature of boiler, the overall thermal efficient of boiler is improved greatly, flue dust ash content in the ash content in burner hearth afterburnt and the tail vertical well 8 is discharged by the ash hole 10 of bottom, during maintenance, the staff comes in and goes out by fire door 87, during boiler operatiopn, can be by procuratorial work door 88, flame-observing hole 65 is watched, the cool air inlet 84 of air preheater 83, hot air outlet 85 is for burner hearth burning hot blast, and platform staircase 91 is used for maintenance and operational inspection.
Embodiment of the present utility model explains, and is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the utility model discloses, and can expect easily changing or replacing, and all should be encompassed within the protection domain of the present utility model.

Claims (5)

1. an efficient coal dust gasification and coal dust compound combustion hot-water boiler, it is characterized in that: comprise air blast (1), Pulverized Coal Bin (2), power transportation pipe (3), burner (4), vaporizer (5), burner hearth (6), horizontal flue (7), tail vertical well (8), boiler pillar (9), described air blast (1) connects Pulverized Coal Bin (2), and connects vaporizer (5) by power transportation pipe (3); Described burner (4) is installed on the vaporizer (5); Described vaporizer (5), burner hearth (6), horizontal flue (7), tail vertical well (8) connect successively, and are installed in upward formation ∏ type of boiler pillar (9); Combustion band (60) is not arranged in burner hearth (6) and top, vaporizer (5) junction, is provided with jet wind entrance (61), secondary wind entrance (62) in burner hearth (6) bottom, in described not combustion band (60) exit tertiary air entrance (63) is set; In described horizontal flue (7), be provided with heater (71); Be provided with convection bank (81), economizer (82) and air preheater (83) in described tail vertical well (8) lining.
2. efficient coal dust gasification according to claim 1 and coal dust compound combustion hot-water boiler is characterized in that: described burner hearth (6) arranges 5~30 meters of height, and water-cooling wall tube bank (64) is set around it.
3. efficient coal dust gasification according to claim 1 and coal dust compound combustion hot-water boiler is characterized in that: also be provided with cool air inlet (84), hot air outlet (85), exhanst gas outlet (86), fire door (87), procuratorial work door (88) on the described tail vertical well (8); Described burner hearth (6) is provided with flame-observing hole (65); Described boiler pillar (9) is provided with platform staircase (91).
4. efficient coal dust gasification according to claim 1 and coal dust compound combustion hot-water boiler is characterized in that: be provided with ash port (10) bottom described burner hearth (6) and the tail vertical well (8).
5. efficient coal dust gasification according to claim 1 and coal dust compound combustion hot-water boiler, it is characterized in that: described burner hearth (6) also is provided with drum (11) with horizontal flue (7) junction, and described drum (11) connects water-cooling wall tube bank (64) and heater (71).
CN2012204730866U 2012-09-18 2012-09-18 High-efficiency coal powder gasification and coal powder compound combustion hot water boiler Expired - Fee Related CN203148019U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012204730866U CN203148019U (en) 2012-09-18 2012-09-18 High-efficiency coal powder gasification and coal powder compound combustion hot water boiler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012204730866U CN203148019U (en) 2012-09-18 2012-09-18 High-efficiency coal powder gasification and coal powder compound combustion hot water boiler

Publications (1)

Publication Number Publication Date
CN203148019U true CN203148019U (en) 2013-08-21

Family

ID=48975536

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2012204730866U Expired - Fee Related CN203148019U (en) 2012-09-18 2012-09-18 High-efficiency coal powder gasification and coal powder compound combustion hot water boiler

Country Status (1)

Country Link
CN (1) CN203148019U (en)

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

Granted publication date: 20130821

Termination date: 20130918

C17 Cessation of patent right