CN104848191A - Improved single-drum horizontal type coal-fired steam boiler - Google Patents

Improved single-drum horizontal type coal-fired steam boiler Download PDF

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Publication number
CN104848191A
CN104848191A CN201510296423.7A CN201510296423A CN104848191A CN 104848191 A CN104848191 A CN 104848191A CN 201510296423 A CN201510296423 A CN 201510296423A CN 104848191 A CN104848191 A CN 104848191A
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China
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drum
header
coal
combustion chamber
steam boiler
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CN201510296423.7A
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Chinese (zh)
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CN104848191B (en
Inventor
陈小喜
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陈小喜
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Publication of CN104848191B publication Critical patent/CN104848191B/en

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Abstract

The invention discloses an improved single-drum horizontal type coal-fired steam boiler. Front lower headers (9) are connected with a drum (1) through a plurality of convection pipes (22), partitions (31) are arranged between the convection pipes (22), the convection pipes (22) and the partitions (31) partition a boiler cavity into a combustion chamber (19) and a heat exchange chamber (33), the combustion chamber (19) is located on the lower lateral side of the drum (1), the heat exchange chamber (33) is located right under the drum (1), and a fire inlet (29) is arranged in each partition (31); a declining stepped grate (17) and a declining preheating dry distillation plate (16) are arranged in the combustion chamber (19), a coal thickness control pipe (7) is fixed on the preheating dry distillation plate (16), a tertiary air inlet and coal adding port (11), a secondary air inlet (12) and a primary air inlet and drag discharging port (13) are arranged in a front boiler wall (15), and a coal bed is enabled to have three combustion modes of upper combustion, horizontal combustion and lower combustion. By the above structure, the improved single-drum horizontal type coal-fired steam boiler has the advantages of simple and reasonable structure, convenience in operation and use, high heat efficiency, low environment pollution, emission on standard and the like.

Description

The horizontal coal-fired steam boiler of modified list drum
Technical field
The invention relates to a kind of single drum coal-fired boiler, particularly a kind of energy-saving and environmental protection, the efficiently horizontal coal-fired steam boiler of modified list drum.
Background technology
Single drum coal-fired steam boiler is a kind of boiler being used for supplying steam, is mainly used in industry, industry is planted in breeding, the industry such as resident's heating, and purposes is very extensive.Existing single drum coal-fired boiler generally adopts fixed grate, chain protects row, be burning or instead burn mode, burner hearth is positioned at the below of drum, structure is simple, easy for operation, but in use has the following disadvantages: one is unreasonable structure, ventilate uneven, have selection to coal, can not use slagging scorification coal and duff, during hand-stoked, fireman's labour intensity is large; Two is that burning is insufficient, and can smolder, forced ventilation, has excess air, and heat exchange is apart from short, and the thermal efficiency is low, and power consumption is large; Three is high fume temperatures, and coal ash waste heat can not utilize; Four is that toxic emission does not reach requirement, and blackness and flue dust exceed standard seriously, has water pollutions after blackness and flue dust water treatment, still can not qualified discharge; Four is that dedusting need use Special Equipment.For this reason, many manufacturers and knowledgeable people develop specially and develop, but not yet have comparatively ideal product to emerge so far.
Summary of the invention
In order to overcome the above-mentioned problem that existing single drum coal-fired steam boiler exists, first object of the invention is to provide the side-lower that a kind of combustion chamber is positioned at drum, heat-exchanging chamber is positioned at immediately below drum, upper burning, flat to burn and boiler that lower burning three kinds of combustion systems combine, the second object be to provide simple and reasonable, easy for operation, burning cmpletely, coal ash UTILIZATION OF VESIDUAL HEAT IN, the thermal efficiency are high, environmental pollution is little, water pollution-free, can the horizontal coal-fired steam boiler of modified list drum of qualified discharge.
The invention solves the technical scheme that its technical problem adopts, it comprises drum, furnace wall, base, front lower header, rear lower header, left and right header, rear lower header is connected with drum by water-cooling wall with left and right header, some smoke pipes are provided with in drum, described front lower header is connected with drum by some convection tubes, dividing plate is provided with between each convection tube, convection tube becomes combustion chamber and heat-exchanging chamber with dividing plate furnace chamber, combustion chamber is positioned at the side-lower of drum, heat-exchanging chamber is positioned at immediately below drum, dividing plate be provided be communicated with combustion chamber and heat-exchanging chamber enter burner, the staged fire grate had a down dip and the preheating destructive distillation plate had a down dip is provided with in described combustion chamber, preheating destructive distillation plate is fixed with coal seam thickness control valve, front furnace wall is provided with three air intakes and coal filling hole and an air intake and slag notch that communicate with combustion chamber, three air intakes and coal filling hole make coal seam air intake burning from top to bottom, and an air intake and slag notch make coal seam air intake burning from the bottom up.
The further scheme of the invention, described front furnace wall is provided with the secondary air inlet communicated with combustion chamber, is provided with every wind and split-wind plate bottom secondary air inlet and between fire grate, and secondary air inlet makes the horizontal air intake burning in coal seam.
The further scheme of the invention, described preheating destructive distillation plate is fixed with preheating destructive distillation plate temperature control tube, and coal seam thickness control valve is connected with drum by convection tube with preheating destructive distillation plate temperature control tube top, bottom is connected with left and right header by convection tube.
The further scheme of the invention, described combustion chamber is provided with four air inlets corresponding with entering burner.
The further scheme of the invention, lower header in the middle of being at least provided with one in described heat-exchanging chamber, middle lower header is connected with drum by convection tube, dividing plate is provided with between the convection tube of middle lower header, the hot switching path that the convection tube of middle lower header and dividing plate make formation in heat-exchanging chamber turn back at least one times, the import of hot switching path with enter burner and be connected, the outlet of hot switching path is connected with the mouth that enters of smoke pipe, and the outlet flue of smoke pipe is connected with exhaust opening.
The further scheme of the invention, described hot switching path is provided with middle header, and middle header is connected with drum by convection tube.
The further scheme of the invention, the furnace wall of the described left and right sides is provided with the cleaning door corresponding with hot switching path.
After adopting said structure, have the following advantages compared with the prior art and effect: one is owing to adopting three ventilations, combustion chamber is made to realize the lower combustion system burning, equal burning and upper burning phase structure, crater four ventilations are burnt completely, coal is preheating destructive distillation, gasification, burning in combustion chamber, sufficient combustion, smokeless and dust free, without carbon monoxide emission.Two is that boiler passes through once to slag tap, sedimentation deashing design on hot switching path, and dust discharge can be made to reach gas fired-boiler discharge standard.Three is arrange every wind and split-wind plate between secondary air inlet and fire grate, can control air intake trend, ensures that air intake can not be ganged up up and down, and when making the motion of the less or boiler small-power of coal in combustion chamber, thermal efficiency impact is little.Four is carbon monoxide fully can be burnouted under four air intake effects, without carbon monoxide emission.Five is that hot switching path in heat-exchanging chamber once can be turned back according to the collector area design of boiler, secondary is turned back or repeatedly turned back, and guarantees that high efficiency boiler runs.Four is also to use biological particles to burn, also can dried firewood, rubbish multifuel combustion together with coal.
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram of the invention.
Fig. 2 is the A-A cross-sectional view of the invention Fig. 1.
Fig. 3 is the right TV structure schematic diagram of the invention boiler body.
Fig. 4 is the B-B cross-sectional view of the invention Fig. 2.
Fig. 5 is the C-C cross-sectional view of the invention Fig. 3.
Wherein 1 drum, 2 Pressure gauges, 3 safety valves, 4 exhaust openings, 5 water inlet pipes, 6 preheating destructive distillation plate temperature control tubes, 7 coal seam thickness control valves, header in 8, lower header before 9, 10 sewage draining exits, 11 3 air intakes and coal filling hole, 12 secondary air inlets, 13 air intakes and slag notch, 14 smoke pipes, 15 furnace walls, 16 preheating destructive distillation plates, 17 fire grates, 18 every wind and split-wind plate, 19 combustion chambers, 20 bases, 21 4 air inlets, 22 convection tubes, 23 middle lower headers, 24 water-cooling walls, lower header after 25, about 26 headers, 27 cleaning doors, 28 liquid level gauges, 29 enter burner, 30 enter mouth, 31 dividing plates, 32 hot switching paths, 33 heat-exchanging chambers, 34 coal seams.
Detailed description of the invention
Shown in Fig. 1 to Fig. 5, for the specific embodiments of the horizontal coal-fired steam boiler of a kind of modified of the invention list drum, it comprises drum 1, furnace wall 15, base 20, front lower header 9, rear lower header 25, left and right header 26, rear lower header 25 is connected with drum 1 by water-cooling wall 24 with left and right header 26, some smoke pipes 14 are provided with in drum 1, described front lower header 9 is connected with drum 1 by some convection tubes 22, dividing plate 31 is provided with between each convection tube 22, convection tube 22 becomes combustion chamber 19 and heat-exchanging chamber 33 with dividing plate 31 furnace chamber, combustion chamber 19 is positioned at the side-lower of drum 1, heat-exchanging chamber 33 is positioned at immediately below drum 1, dividing plate 31 be provided be communicated with combustion chamber 19 and heat-exchanging chamber 33 enter burner 29, the staged fire grate 17 had a down dip and the preheating destructive distillation plate 16 had a down dip is provided with in described combustion chamber 19, preheating destructive distillation plate 16 is fixed with coal seam thickness control valve 7, front furnace wall 15 is provided with three air intakes and coal filling hole 11 and an air intake and slag notch 13 that communicate with combustion chamber 19, three air intakes and coal filling hole 11 make coal seam 34 air intake burning from top to bottom, and an air intake and slag notch 13 make coal seam 34 air intake burning from the bottom up, described front furnace wall 15 is provided with the secondary air inlet 12 communicated with combustion chamber 19, is provided with every wind and split-wind plate 18 bottom secondary air inlet 12 and between fire grate 17, and secondary air inlet 12 makes the horizontal air intake burning in coal seam 34, make boiler possess upper burning, flat burning and lower burning three kinds of combustion systems, the below in coal seam is coal seam, and front lower header 9 can make full use of coal ash waste heat simultaneously.
In order to carry out heat exchange fast, improve the thermal efficiency, described preheating destructive distillation plate 16 is fixed with preheating destructive distillation plate temperature control tube 6, coal seam thickness control valve 7 is connected with drum 1 by convection tube 22 with preheating destructive distillation plate temperature control tube 6 top, bottom is connected with left and right header 26 by convection tube 22.In order to improve the thermal efficiency further, reduce carbon monoxide emission, described combustion chamber 19 is provided with four air inlets 21 corresponding with entering burner 29.
In order to effectively improve the thermal efficiency and collector area, lower header 23 in the middle of being at least provided with one in described heat-exchanging chamber 33, middle lower header 23 is connected with drum 1 by convection tube 22, dividing plate 31 is provided with between the convection tube 22 of middle lower header 23, the hot switching path 32 that the convection tube 22 of middle lower header 23 and dividing plate 31 make formation in heat-exchanging chamber 33 turn back at least one times, the import of hot switching path 32 with enter burner 29 and be connected, the outlet of hot switching path 32 is connected with the mouth 30 that enters of smoke pipe 14, and the outlet flue of smoke pipe 14 is connected with exhaust opening 4.Described hot switching path 32 is provided with middle header 8, and middle header 8 is connected with drum 1 by convection tube 22.
Conveniently heat-exchanging chamber 33 deashing, the furnace wall 15 of the described left and right sides is provided with the cleaning door 27 corresponding with hot switching path 32.
In order to ensure safe operation of the boiler, described drum 1 is provided with safety valve 3 and Pressure gauge 2, measure water level liquid level gauge 28 and steam (vapor) outlet.
For the ease of boiler feed water and blowdown, described drum 1 is connected with water inlet pipe 5, in described drum 1, front lower header 9, rear lower header 25, middle lower header 23, left and right header 26 and middle header 8, correspondence is connected with sewage draining exit 10.
The above; just the specific embodiment of the invention, not makes any pro forma restriction, on the technical scheme basis not departing from the invention to the invention; done simple modification, equivalent variations or modification, all fall into the protection domain of the invention.

Claims (7)

1. the horizontal coal-fired steam boiler of modified list drum, comprise drum (1), furnace wall (15), base (20), front lower header (9), rear lower header (25), left and right header (26), rear lower header (25) is connected with drum (1) by water-cooling wall (24) with left and right header (26), some smoke pipes (14) are provided with in drum (1), it is characterized in that: described front lower header (9) is connected with drum (1) by some convection tubes (22), dividing plate (31) is provided with between each convection tube (22), convection tube (22) becomes combustion chamber (19) and heat-exchanging chamber (33) with dividing plate (31) furnace chamber, combustion chamber (19) is positioned at the side-lower of drum (1), heat-exchanging chamber (33) is positioned at immediately below drum (1), dividing plate (31) be provided be communicated with combustion chamber (19) and heat-exchanging chamber (33) enter burner (29), the staged fire grate (17) had a down dip and the preheating destructive distillation plate (16) had a down dip is provided with in described combustion chamber (19), preheating destructive distillation plate (16) is fixed with coal seam thickness control valve (7), front furnace wall (15) is provided with three air intakes and coal filling hole (11) and an air intake and slag notch (13) that communicate with combustion chamber (19), three air intakes and coal filling hole (11) make coal seam (34) air intake burning from top to bottom, and an air intake and slag notch (13) make coal seam (34) air intake burning from the bottom up.
2. the horizontal coal-fired steam boiler of modified list drum according to claim 1, it is characterized in that: described front furnace wall (15) is provided with the secondary air inlet (12) communicated with combustion chamber (19), be provided with every wind and split-wind plate (18) between secondary air inlet (12) bottom and fire grate (17), secondary air inlet (12) makes the horizontal air intake burning in coal seam (34).
3. the horizontal coal-fired steam boiler of modified list drum according to claim 1 and 2, it is characterized in that: described preheating destructive distillation plate (16) is fixed with preheating destructive distillation plate temperature control tube (6), coal seam thickness control valve (7) and preheating destructive distillation plate temperature control tube (6) top are connected with drum (1) by convection tube (22), bottom passes through convection tube (22) and be connected with left and right header (26).
4. the horizontal coal-fired steam boiler of modified list drum according to claim 3, is characterized in that: described combustion chamber (19) is provided with four air inlets (21) corresponding with entering burner (29).
5. the horizontal coal-fired steam boiler of modified list drum according to claim 4, it is characterized in that: lower header (23) in the middle of being at least provided with in described heat-exchanging chamber (33), middle lower header (23) is connected with drum (1) by convection tube (22), dividing plate (31) is provided with between the convection tube (22) of middle lower header (23), the hot switching path (32) that the convection tube (22) of middle lower header (23) and dividing plate (31) make heat-exchanging chamber (33) interior formation turn back at least one times, the import of hot switching path (32) with enter burner (29) and be connected, the outlet of hot switching path (32) is connected with the mouth (30) that enters of smoke pipe (14), the outlet flue of smoke pipe (14) is connected with exhaust opening (4).
6. the horizontal coal-fired steam boiler of modified list drum according to claim 5, it is characterized in that: described hot switching path (32) is provided with middle header (8), and middle header (8) is connected with drum (1) by convection tube (22).
7. the horizontal coal-fired steam boiler of modified list drum according to claim 6, is characterized in that: the furnace wall (15) of the described left and right sides is provided with the cleaning door (27) corresponding with hot switching path (32).
CN201510296423.7A 2015-06-03 2015-06-03 The horizontal coal-fired steam boiler of modified model list drum CN104848191B (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4449482A (en) * 1982-04-28 1984-05-22 Dorr-Oliver Incorporated Fluidized bed boilers
CN2283795Y (en) * 1996-10-25 1998-06-10 刘迺江 Energy-saving boiler with extension steam pipe
CN201069156Y (en) * 2007-08-22 2008-06-04 张天国 Steam and water dual-purpose horizontal boiler
CN202902610U (en) * 2012-11-15 2013-04-24 陈小喜 Energy-saving environment-friendly coal hot air furnace
CN104654266A (en) * 2015-02-09 2015-05-27 昌图县锅炉制造厂 Water boiler with single boiler barrel and four return strokes
CN204665229U (en) * 2015-06-03 2015-09-23 陈小喜 The horizontal coal-fired steam boiler of modified list drum

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4449482A (en) * 1982-04-28 1984-05-22 Dorr-Oliver Incorporated Fluidized bed boilers
CN2283795Y (en) * 1996-10-25 1998-06-10 刘迺江 Energy-saving boiler with extension steam pipe
CN201069156Y (en) * 2007-08-22 2008-06-04 张天国 Steam and water dual-purpose horizontal boiler
CN202902610U (en) * 2012-11-15 2013-04-24 陈小喜 Energy-saving environment-friendly coal hot air furnace
CN104654266A (en) * 2015-02-09 2015-05-27 昌图县锅炉制造厂 Water boiler with single boiler barrel and four return strokes
CN204665229U (en) * 2015-06-03 2015-09-23 陈小喜 The horizontal coal-fired steam boiler of modified list drum

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