CN105318309A - Two-drum spraying denitration settling separation corner-tube boiler - Google Patents

Two-drum spraying denitration settling separation corner-tube boiler Download PDF

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CN105318309A
CN105318309A CN201410379029.5A CN201410379029A CN105318309A CN 105318309 A CN105318309 A CN 105318309A CN 201410379029 A CN201410379029 A CN 201410379029A CN 105318309 A CN105318309 A CN 105318309A
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boiler
cooling
denitration
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CN105318309B (en
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孙宇健
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孙宇健
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Abstract

The invention relates to a two-drum spraying denitration settling separation corner-tube boiler, comprising a boiler body part and a fire grate part, wherein the fire grate part is arranged at the bottom of the boiler body part; the boiler is characterized in that a boiler body 1 is provided with a boil supporting mechanism, a boiler water circulation mechanism and a spraying denitration cyclone separation settling device, the boil supporting mechanism is formed by two vertically arranged side cooling wall supporting downcomers 24, a side wall water supply downcomer 22 communicated with the side cooling wall supporting downcomers 24, and supporting stiffening beams 26 arranged vertically and horizontally, the boiler water circulation mechanism is formed by a channel rear wall water cooling wall 31, a second channel rear wall water cooling wall 37, and an upper header 16 and a lower header 33 of a settling box, and the spraying denitration cyclone separation settling device is formed by denitration spraying pipes 34, denitration nozzles 18, a denitration agent supplier 35, an upper settling separation chamber 27 and a lower settling separation chamber 28. The two-drum spraying denitration settling separation corner-tube boiler has the characteristics of being high in supporting strength, stable in structure, capable of reducing nitric oxide emission, reducing air pollution and improving thermal efficiency, energy-saving, environment-friendly, safe and the like.

Description

A kind of two drum spray denitration sedimentation separation corner tube boiler
technical field
The present invention relates to boiler technology field, particularly can meet the emission request of national emission standard of air pollutants for boilers, solve discharged nitrous oxides concentration high, one two drum spray denitration sedimentation separation corner tube boiler of contaminated environment.
background technology
As everyone knows, current corner tube boiler structure arranges around boiler body that four down-comers be not heated are as support, and boiler intensity is low, supports insecure, easily causes security incident.Because the integral arrangement of corner tube boiler limits by intensity, be unfavorable for large-sized boiler manufacture.Common corner tube boiler fire grate length can not fully lengthen, and fuel combustion is insufficient, and efficiency of fire coal is low, can not burning low grade coal, and phosphorus content is high, and energy ezpenditure is large.Furnace outlet flue gas directly washes away Flag pattern heat surface coiled pipe, and serious wear does not have expansion chamber, and dust can not sedimentation, and heating surface is few, and service life is low, and maintenance rate is high, increases use cost.Along with national environmental protection policy is increasingly strict, known corner tube boiler can not meet the emission request of country about emission standard of air pollutants for boilers, and discharged nitrous oxides concentration is high, contaminated environment.Therefore, how to solve boiler and do not have expansion chamber and ash fall, and it is little to solve heating surface area, furnace outlet flue gas does not directly wash away Flag pattern heat surface coiled pipe, reduce wear, prolonged boiler service life, reduce maintenance frequency, reduce use cost, in addition, solve Denitration in Boiler, reduce discharged nitrous oxides, energy-conserving and environment-protective etc. have become problem in the urgent need to address at present.
summary of the invention
The object of the invention is: improve for the ubiquitous problem of prior art, overcome shortcomings and deficiencies of the prior art, there is provided with expansion chamber, high strength supports, structural safety is stablized, reduce the discharge of nitrogen oxide, improve one two drum spray denitration sedimentation separation corner tube boiler of boiler thermal output.
The technical solution adopted for the present invention to solve the technical problems is: a kind of two drum spray denitration sedimentation separation corner tube boiler, comprise boiler furnace part, fire grate part, boiler furnace part comprises boiler body 1, four of the setting of boiler body 1 surrounding vertical have boiler Left-side support down-comer 8 and the boiler Right side support rear arch feedwater down-comer 25 of supporting role, at upper drum 21 and the lower drum 30 of the setting of boiler body 1 upper right portion, convection bank 29 between upper drum 21 and lower drum 30, water inlet pipe 20 outlet pipe 19 be communicated with upper drum 21, face arch down-comer 3 and rear arch down-comer 23, and last time water pipe 17, superheater 14, side water wall 4, burner hearth 6, face arch water-cooling wall 7, face arch lower header 9, side water wall upper collecting chamber 2, side water wall lower header 10, rear arch water-cooling wall 32, front and back arch upper collecting chamber 15 and lower header 33, and exhanst gas outlet 28 and dust export 38, fire grate part is arranged on the bottom of boiler furnace part and is connected with the boiler body 1 of boiler furnace part, it is characterized in that:
A, at the rear arch water-cooling wall 32 of the boiler body 1 of boiler furnace part, upper drum 21, lower drum 30 and the convection bank between the two 29, and the interval that side water wall 4 is formed arranges boiler supports mechanism and boiler water cycle mechanism respectively, boiler supports mechanism supports down-comer 24 by two cold walls in vertically disposed side, and support with the cold wall in side sidewall that down-comer 24 is communicated with and to feed water down-comer 22, the support reinforcing beam 26 that level is arranged in length and breadth is formed, the cold wall in side supports the upper of down-comer 24, to be communicated with side water wall lower header 10 with side water wall upper collecting chamber 2 respectively down, boiler water cycle mechanism is by passage rear wall water-cooling wall 31 and second channel rear wall water-cooling wall 37, expansion chamber upper collecting chamber 16, lower header 33 forms.Here, two cold walls in vertically disposed side support down-comer 24, add four boiler Left-side support down-comer 8 and boiler Right side support rear arch feedwater down-comers 25 with supporting role, form six roots of sensation major diameter cornue and form frame system, high strength supports, and structural safety is stablized.Double decline and the circulation canal doing support and working-medium water of six roots of sensation stay pipe, forms new water circulation system and flue gas trend; Before and after boiler, arch, side Leng Bi, down-comer, header, buttress brace form triangular framing self supporting structure; Boiler is supported integrally in six roots of sensation pipe bottom, middle a bit fixing, 5 slips, structure optimization, safety and stability.The overall length, width and height of boiler change, and can produce large-sized boiler, particularly fire grate length increases, and incendivity colm, improves efficiency of combustion, economize energy.As Figure 1-4.
B, at the rear arch water-cooling wall 32 of the boiler body 1 of boiler furnace part, the passage rear wall water-cooling wall 31 of boiler water cycle mechanism and second channel rear wall water-cooling wall 37, and the interval that side water wall 4 is formed arranges spray denitration cyclonic separation sedimentation device, it is by denitration shower 34, denitration nozzle 18, denitrfying agent feeder 35, upper sedimentation separation room 27, lower sedimentation separation chamber 36 forms, wherein, uniform passage rear wall water-cooling wall 31 upper interval being arranged on rear arch water-cooling wall 32 and boiler water cycle mechanism of denitration shower 34 level, uniform on denitration shower 34 denitration nozzle 18 is set, the bottom of denitration shower 34 is communicated with denitrfying agent feeder 35, as Figure 1-4.
C, fire grate partial design adopt traveling-grate stoker structure, and it is by traveling-grate stoker 11, slip expanding stent 12, and boiler supports 13 forms, as shown in Figure 1.Here it is to be understood that Fig. 1 provides is traveling-grate stoker structure, what Fig. 2,3,4 provided is reciprocal grate structure.This technology is also applicable to other fire grate structure.
The denitration nozzle 18 of uniform setting on said denitration shower 34 is upwards unidirectional setting or upper and lower two-way setting, and denitration shower 34 is single row or multiple rows setting.Here, the denitration nozzle 18 on denitration shower 28 is upwards unidirectional setting, realizes upwards unidirectional spray denitration sedimentation separation, as shown in Fig. 1,2,4; Also uniform denitration nozzle 24 can be set denitration shower 28 is upper and lower, realize Bidirectional spray denitration sedimentation separation as shown in Figure 3.In addition, denitration shower 34 is single row or multiple rows setting, and denitration shower 28 can be designed as many rows up and down, such as two rows, or three or four rows etc.
The passage rear wall water-cooling wall 31 of said boiler water cycle mechanism is designed to the upper right indent of co-current contact after the first adverse current of cyclone type, the zigzag of lower left side projection, corresponding second channel rear wall water-cooling wall 37 is designed to upper right projection, the Arabic numerals figure-three of lower vertical, the two forms the space closed is upper sedimentation separation room 27, simultaneously, the convection bank 29 left-half upper design on right side is convex shape, and the space formed close to closing with passage rear wall water-cooling wall 31 the first half makes flue gas enter convection bank 29 from the Lower Half of convection bank 29 bossing, wherein, on passage rear wall water-cooling wall 31, to be communicated with lower header 33 with expansion chamber upper collecting chamber 16 respectively down, on second channel rear wall water-cooling wall 37, to be communicated with passage rear wall water-cooling wall 31 lower part with expansion chamber upper collecting chamber 16 respectively down, as Figure 1-4.Here, passage rear wall water-cooling wall 31 is for two rows are arranged, and also can be single or multiple two rows, as one or three or four rows are arranged.
The upper sedimentation separation room 27 of said spray denitration cyclonic separation sedimentation device is by rear arch water-cooling wall 32, passage rear wall water-cooling wall 31, second channel rear wall water-cooling wall 37, side water wall 4, and denitration nozzle 18 and denitration shower 34 upper interval are formed, lower sedimentation separation chamber 29 is by passage rear wall water-cooling wall 31 and second channel rear wall water-cooling wall 37 bottom, and denitration nozzle 24 and denitration shower 28 bottom and convection bank 29 left lower interval are formed, as Figure 1-4.
The course of work and the principle of this technology are: be first, coal is fallen on traveling-grate stoker or combustion apparatus 11 under gravity, send under machine power effect in burner hearth 6 and burn, the heat produced is by the face arch water-cooling wall 7 of burner hearth 6, rear arch water-cooling wall 32, side water wall 4 absorbs, the flue gas after cooling behind upper sedimentation separation room 27 and lower sedimentation separation chamber 36 on be advanced into convection bank 29 and carry out washing away heat exchange, complete whole heat transfer process, discharged by exhaust opening 28.Wherein, dust is discharged by dust export after the sedimentation of sedimentation separation room 27, completes the boiler smoke course of work.Next is that boiler blow-down water flows into upper drum 21 through water inlet pipe 20, and boiler water outlet flows out drum through outlet pipe 19.Concrete one is fed water by upper drum 21, face arch down-comer 3, port side boiler support down-comer 8, face arch lower header 9, arch upper collecting chamber 15 before and after flowing into after combustion apparatus 11 and burner hearth 6 heat exchange, last time water pipe 17 get back to upper drum 21, complete face arch water-cooling wall 7 water circulation; Two is fed water by upper drum 21, sidewall feedwater down-comer 22, the cold wall support in side down-comer 24, side wall lower header 10, flow into after chain or reciprocal grate (or being called combustion apparatus) 11 and burner hearth 6 heat exchange side water wall upper collecting chamber 2, last time water pipe 17 get back to upper drum 21, complete side water wall 4 water circulation; Three is fed water by upper drum 21, rear arch down-comer 23, starboard boiler support down-comer 25, lower header 33, arch upper collecting chamber 15 before and after flowing into after chain or reciprocal grate (or being called combustion apparatus) 11 and burner hearth 6 heat exchange, expansion chamber upper collecting chamber 16, last time water pipe 17 get back to upper drum 21, complete rear arch water-cooling wall 32, passage rear wall 31, upper sedimentation separation room 27 water circulation; Four is that upper drum 21 enters lower drum 30 through convection bank 29, and due to density contrast, a part rises, and a part declines, and completes the Natural Circulation between upper and lower drum 21,30 and convection bank 29, completes the whole course of work.What needs stressed is this technology spray denitration cyclonic separation sedimentation device and boiler water cycle mechanism, the former mainly carries out spray denitration and cyclonic separation sedimentation, after the first adverse current of the denitrfying agent that exiting flue gas and the denitration nozzle 18 of burner hearth 6 eject, following current contacts, chemical reaction is carried out in upper sedimentation separation room 27, lower sedimentation separation chamber 36, complete denitrating flue gas depositing dust separate and subside process, reduce discharged nitrous oxides, energy-conserving and environment-protective, this technology spray denitration cyclonic separation sedimentation device can be widely used on other various boiler.The latter mainly adds one group of boiler water cycle process, namely passage rear wall water-cooling wall 31 be designed to co-current contact after the first adverse current of cyclone type upper right indent, the zigzag of lower left side projection, corresponding second channel rear wall water-cooling wall 37 is designed to upper right projection, the Arabic numerals figure-three of lower vertical, the two forms the space closed is upper sedimentation separation room 27, simultaneously, the convection bank 29 left-half upper design on right side is convex shape, and the space formed close to closing with passage rear wall water-cooling wall 31 the first half makes flue gas enter convection bank 29 from the Lower Half of convection bank 29 bossing, improve heating surface area little, furnace outlet flue gas does not directly wash away Flag pattern heat surface coiled pipe, reduce wear, prolonged boiler service life, reduce maintenance frequency, reduce use cost, in addition, this technology is not limited only to the structure of reciprocal grate (or being called combustion apparatus) 11, also other fire grate structure can be adopted, such as traveling-grate stoker 11 structure etc., as Fig. 2.In this technology, denitrfying agent adopts liquefied ammonia, ammonia, urea liquid.This technology is applicable to hot-water boiler, steam boiler etc., also can be the boiler of other type.In addition, this technology can be widely used in other various corner tube boiler.
The beneficial effect of this technology is compared had feature with existing technology in other words and is: design spray denitration cyclonic separation sedimentation device and boiler water cycle mechanism, be provided with the sedimentation separation room of spray denitration and cyclone separating structure, there is high strength support, structural safety is stablized, reduce the discharge of nitrogen oxide, reduce air and contamination by dust, improve boiler thermal output, the features such as energy-saving environmental protection safety.
Accompanying drawing explanation
Fig. 1 is that (spray denitration pipe 34 top arranges denitration nozzle 18 in the present invention, passage rear wall water-cooling wall 31 is upper right indent, the zigzag of lower left side projection, corresponding second channel rear wall water-cooling wall 37 is designed to upper right projection, the Arabic numerals figure-three of lower vertical, convection bank 29 the first half of corresponding left-half is designed to convex shape, and the space formed close to closing with passage rear wall water-cooling wall 31 the first half makes flue gas enter convection bank 29 from the Lower Half of convection bank 29 bossing, combustion apparatus is traveling-grate stoker 11) front view.
Fig. 2 is that (spray denitration pipe 34 top arranges denitration nozzle 18 to the second structure of the present invention, passage rear wall water-cooling wall 31 is upper right indent, the zigzag of lower left side projection, corresponding second channel rear wall water-cooling wall 37 is designed to upper right projection, the Arabic numerals figure-three of lower vertical, convection bank 29 the first half of corresponding left-half is designed to convex shape, and the space formed close to closing with passage rear wall water-cooling wall 31 the first half makes flue gas enter convection bank 29 from the Lower Half of convection bank 29 bossing, combustion apparatus is reciprocal grate 11) front view.
Fig. 3 is that the third structure of the present invention is (on spray denitration pipe 34, under denitration nozzle 18 is set, passage rear wall water-cooling wall 31 is upper right indent, the zigzag of lower left side projection, corresponding second channel rear wall water-cooling wall 37 is designed to upper right projection, the Arabic numerals figure-three of lower vertical, convection bank 29 the first half of corresponding left-half is designed to convex shape, and the space formed close to closing with passage rear wall water-cooling wall 31 the first half makes flue gas enter convection bank 29 from the Lower Half of convection bank 29 bossing, combustion apparatus is reciprocal grate 11) front view.
Fig. 4 is that (spray denitration pipe 34 top arranges denitration nozzle 18 to the present invention's the 4th kind of structure, passage rear wall water-cooling wall 31 is upper right indent, the zigzag of lower left side projection, corresponding second channel rear wall water-cooling wall 37 is designed to upper right projection, the Arabic numerals figure-three of lower vertical, convection bank 29 the first half of corresponding left-half is designed to convex shape, and the space formed close to closing with passage rear wall water-cooling wall 31 the first half makes flue gas enter convection bank 29 from the Lower Half of convection bank 29 bossing, combustion apparatus is reciprocal grate 11, and, the structure of flue gas dividing plate 39 is set in convection bank 29) front view.Here, the structure of flue gas dividing plate 39 being set in convection bank 29, mainly for increasing the time of staying of flue gas in convection bank 29, can the thermal efficiency being improved.
In figure: 1 boiler body, 2 side water wall upper collecting chambers, 3 face arch down-comers, 4 side water walls, 5 throttles, 6 burner hearths, 7 face arch water-cooling walls, 8 port side boilers support down-comer (or being called side wall down-comer), 9 face arch lower headers (or being called face arch header), 10 side wall lower headers, 11 reciprocal grates (or being called combustion apparatus), 12 slip expanding stents, 13 boiler supports, 14 superheaters, upper collecting chamber is encircleed before and after 15, 16 expansion chamber upper collecting chambers, 17 last time water pipe, 18 denitration nozzle, 19 outlet pipes, 20 water inlet pipes, 21 upper drums, 22 sidewall feedwater down-comers, 23 rear arch down-comers, the 24 cold walls in side support down-comer, 25 starboard boilers support down-comer (or being called rear arch feed pipe), 26 support reinforcing beams, sedimentation separation room (or being called denitration Sproy cyclone sedimentation separation room) on 27, 28 exhanst gas outlets (or being called exhaust opening), 29 convection banks, 30 lower drums, 31 passage rear wall water-cooling walls (or being called first passage rear wall water-cooling wall), 32 rear arch water-cooling walls, 33 lower headers (or being called rear arch water-cooling wall passage rear wall lower header), 34 denitration showers, 35 denitrfying agent feeders (or being called denitrfying agent feedway), 36 times sedimentation separation chambers, 37 second channel rear wall water-cooling walls, 38 dust exports, 39 flue gas dividing plates.
detailed description of the invention
The specific embodiment of the present invention, as Figure 1-4, a kind of two drum spray denitration sedimentation separation corner tube boiler, comprise boiler furnace part, fire grate part, boiler furnace part comprises boiler body 1, four of the setting of boiler body 1 surrounding vertical have boiler Left-side support down-comer 8 and the boiler Right side support rear arch feedwater down-comer 25 of supporting role, at upper drum 21 and the lower drum 30 of the setting of boiler body 1 upper right portion, convection bank 29 between upper drum 21 and lower drum 30, water inlet pipe 20 outlet pipe 19 be communicated with upper drum 21, face arch down-comer 3 and rear arch down-comer 23, and last time water pipe 17, superheater 14, side water wall 4, burner hearth 6, face arch water-cooling wall 7, face arch lower header 9, side water wall upper collecting chamber 2, side water wall lower header 10, rear arch water-cooling wall 32, front and back arch upper collecting chamber 15 and lower header 33, and exhanst gas outlet 28 and dust export 38, fire grate part is arranged on the bottom of boiler furnace part and is connected with the boiler body 1 of boiler furnace part, it is characterized in that:
A, at the rear arch water-cooling wall 32 of the boiler body 1 of boiler furnace part, upper drum 21, lower drum 30 and the convection bank between the two 29, and the interval that side water wall 4 is formed arranges boiler supports mechanism and boiler water cycle mechanism respectively, boiler supports mechanism supports down-comer 24 by two cold walls in vertically disposed side, and support with the cold wall in side sidewall that down-comer 24 is communicated with and to feed water down-comer 22, the support reinforcing beam 26 that level is arranged in length and breadth is formed, the cold wall in side supports the upper of down-comer 24, to be communicated with side water wall lower header 10 with side water wall upper collecting chamber 2 respectively down, boiler water cycle mechanism is by passage rear wall water-cooling wall 31 and second channel rear wall water-cooling wall 37, expansion chamber upper collecting chamber 16, lower header 33 forms.Here, two cold walls in vertically disposed side support down-comer 24, add four boiler Left-side support down-comer 8 and boiler Right side support rear arch feedwater down-comers 25 with supporting role, form six roots of sensation major diameter cornue and form frame system, high strength supports, and structural safety is stablized.Double decline and the circulation canal doing support and working-medium water of six roots of sensation stay pipe, forms new water circulation system and flue gas trend; Before and after boiler, arch, side Leng Bi, down-comer, header, buttress brace form triangular framing self supporting structure; Boiler is supported integrally in six roots of sensation pipe bottom, middle a bit fixing, 5 slips, structure optimization, safety and stability.The overall length, width and height of boiler change, and can produce large-sized boiler, particularly fire grate length increases, and incendivity colm, improves efficiency of combustion, economize energy.As Figure 1-4.
B, at the rear arch water-cooling wall 32 of the boiler body 1 of boiler furnace part, the passage rear wall water-cooling wall 31 of boiler water cycle mechanism and second channel rear wall water-cooling wall 37, and the interval that side water wall 4 is formed arranges spray denitration cyclonic separation sedimentation device, it is by denitration shower 34, denitration nozzle 18, denitrfying agent feeder 35, upper sedimentation separation room 27, lower sedimentation separation chamber 36 forms, wherein, uniform passage rear wall water-cooling wall 31 upper interval being arranged on rear arch water-cooling wall 32 and boiler water cycle mechanism of denitration shower 34 level, uniform on denitration shower 34 denitration nozzle 18 is set, the bottom of denitration shower 34 is communicated with denitrfying agent feeder 35, as Figure 1-4.
C, fire grate partial design adopt traveling-grate stoker structure, and it is by traveling-grate stoker 11, slip expanding stent 12, and boiler supports 13 forms, as shown in Figure 1.Here it is to be understood that Fig. 1 provides is traveling-grate stoker structure, what Fig. 2,3,4 provided is reciprocal grate structure.This technology is also applicable to other fire grate structure.
The denitration nozzle 18 of uniform setting on said denitration shower 34 is upwards unidirectional setting or upper and lower two-way setting, and denitration shower 34 is single row or multiple rows setting.Here, the denitration nozzle 18 on denitration shower 28 is upwards unidirectional setting, realizes upwards unidirectional spray denitration sedimentation separation, as shown in Fig. 1,2,4; Also uniform denitration nozzle 24 can be set denitration shower 28 is upper and lower, realize Bidirectional spray denitration sedimentation separation as shown in Figure 3.In addition, denitration shower 34 is single row or multiple rows setting, and denitration shower 28 can be designed as many rows up and down, such as two rows, or three or four rows etc.
The passage rear wall water-cooling wall 31 of said boiler water cycle mechanism is designed to the upper right indent of co-current contact after the first adverse current of cyclone type, the zigzag of lower left side projection, corresponding second channel rear wall water-cooling wall 37 is designed to upper right projection, the Arabic numerals figure-three of lower vertical, the two forms the space closed is upper sedimentation separation room 27, simultaneously, the convection bank 29 left-half upper design on right side is convex shape, and the space formed close to closing with passage rear wall water-cooling wall 31 the first half makes flue gas enter convection bank 29 from the Lower Half of convection bank 29 bossing, wherein, on passage rear wall water-cooling wall 31, to be communicated with lower header 33 with expansion chamber upper collecting chamber 16 respectively down, on second channel rear wall water-cooling wall 37, to be communicated with passage rear wall water-cooling wall 31 lower part with expansion chamber upper collecting chamber 16 respectively down, as Figure 1-4.Here, passage rear wall water-cooling wall 31 is for two rows are arranged, and also can be single or multiple two rows, as one or three or four rows are arranged.
The upper sedimentation separation room 27 of said spray denitration cyclonic separation sedimentation device is by rear arch water-cooling wall 32, passage rear wall water-cooling wall 31, second channel rear wall water-cooling wall 37, side water wall 4, and denitration nozzle 18 and denitration shower 34 upper interval are formed, lower sedimentation separation chamber 29 is by passage rear wall water-cooling wall 31 and second channel rear wall water-cooling wall 37 bottom, and denitration nozzle 24 and denitration shower 28 bottom and convection bank 29 left lower interval are formed, as Figure 1-4.

Claims (5)

1. a two drum spray denitration sedimentation separation corner tube boiler, comprise boiler furnace part, fire grate part, boiler furnace part comprises boiler body 1, four of the setting of boiler body 1 surrounding vertical have boiler Left-side support down-comer 8 and the boiler Right side support rear arch feedwater down-comer 25 of supporting role, at upper drum 21 and the lower drum 30 of the setting of boiler body 1 upper right portion, convection bank 29 between upper drum 21 and lower drum 30, water inlet pipe 20 outlet pipe 19 be communicated with upper drum 21, face arch down-comer 3 and rear arch down-comer 23, and last time water pipe 17, superheater 14, side water wall 4, burner hearth 6, face arch water-cooling wall 7, face arch lower header 9, side water wall upper collecting chamber 2, side water wall lower header 10, rear arch water-cooling wall 32, front and back arch upper collecting chamber 15 and lower header 33, and exhanst gas outlet 28 and dust export 38, fire grate part is arranged on the bottom of boiler furnace part and is connected with the boiler body 1 of boiler furnace part, it is characterized in that:
A, at the rear arch water-cooling wall 32 of the boiler body 1 of boiler furnace part, upper drum 21, lower drum 30 and the convection bank between the two 29, and the interval that side water wall 4 is formed arranges boiler supports mechanism and boiler water cycle mechanism respectively, boiler supports mechanism supports down-comer 24 by two cold walls in vertically disposed side, and support with the cold wall in side sidewall that down-comer 24 is communicated with and to feed water down-comer 22, the support reinforcing beam 26 that level is arranged in length and breadth is formed, the cold wall in side supports the upper of down-comer 24, to be communicated with side water wall lower header 10 with side water wall upper collecting chamber 2 respectively down, boiler water cycle mechanism is by passage rear wall water-cooling wall 31 and second channel rear wall water-cooling wall 37, expansion chamber upper collecting chamber 16, lower header 33 forms,
B, at the rear arch water-cooling wall 32 of the boiler body 1 of boiler furnace part, the passage rear wall water-cooling wall 31 of boiler water cycle mechanism and second channel rear wall water-cooling wall 37, and the interval that side water wall 4 is formed arranges spray denitration cyclonic separation sedimentation device, it is by denitration shower 34, denitration nozzle 18, denitrfying agent feeder 35, upper sedimentation separation room 27, lower sedimentation separation chamber 36 forms, wherein, uniform passage rear wall water-cooling wall 31 upper interval being arranged on rear arch water-cooling wall 32 and boiler water cycle mechanism of denitration shower 34 level, uniform on denitration shower 34 denitration nozzle 18 is set, the bottom of denitration shower 34 is communicated with denitrfying agent feeder 35,
C, fire grate partial design adopt traveling-grate stoker structure, and it is by traveling-grate stoker 11, slip expanding stent 12, and boiler supports 13 forms.
2. a kind of two drum spray denitration sedimentation separation corner tube boiler as claimed in claim 1, is characterized in that: the denitration nozzle 18 of uniform setting on said denitration shower 34 is upwards unidirectional setting or upper and lower two-way setting.
3. a kind of two drum spray denitration sedimentation separation corner tube boiler as claimed in claim 1 or 2, it is characterized in that: the passage rear wall water-cooling wall 31 of said boiler water cycle mechanism is designed to the upper right indent of co-current contact after the first adverse current of cyclone type, the zigzag of lower left side projection, corresponding second channel rear wall water-cooling wall 37 is designed to upper right projection, the Arabic numerals figure-three of lower vertical, the two forms the space closed is upper sedimentation separation room 27, simultaneously, the convection bank 29 left-half upper design on right side is convex shape, and the space formed close to closing with passage rear wall water-cooling wall 31 the first half makes flue gas enter convection bank 29 from the Lower Half of convection bank 29 bossing, wherein, on passage rear wall water-cooling wall 31, to be communicated with lower header 33 with expansion chamber upper collecting chamber 16 respectively down, on second channel rear wall water-cooling wall 37, to be communicated with passage rear wall water-cooling wall 31 lower part with expansion chamber upper collecting chamber 16 respectively down.
4. a kind of two drum spray denitration sedimentation separation corner tube boiler as claimed in claim 1 or 2, it is characterized in that: the upper sedimentation separation room 27 of said spray denitration cyclonic separation sedimentation device is by rear arch water-cooling wall 32, passage rear wall water-cooling wall 31, second channel rear wall water-cooling wall 37, side water wall 4, and denitration nozzle 18 and denitration shower 34 upper interval are formed, lower sedimentation separation chamber 29 is by passage rear wall water-cooling wall 31 and second channel rear wall water-cooling wall 37 bottom, and denitration nozzle 24 and denitration shower 28 bottom and convection bank 29 left lower interval are formed.
5. a kind of two drum spray denitration sedimentation separation corner tube boiler as claimed in claim 3, it is characterized in that: the upper sedimentation separation room 27 of said spray denitration cyclonic separation sedimentation device is by rear arch water-cooling wall 32, passage rear wall water-cooling wall 31, second channel rear wall water-cooling wall 37, side water wall 4, and denitration nozzle 18 and denitration shower 34 upper interval are formed, lower sedimentation separation chamber 29 is by passage rear wall water-cooling wall 31 and second channel rear wall water-cooling wall 37 bottom, and denitration nozzle 24 and denitration shower 28 bottom and convection bank 29 left lower interval are formed.
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CN101949531A (en) * 2010-09-14 2011-01-19 天津宝成机械集团有限公司 Novel layer burning boiler
CN202442314U (en) * 2012-01-19 2012-09-19 哈尔滨市金京锅炉有限公司 Double-boiler barrel transverse type fixed honeycomb fire grate plant fuel steam boiler
CN103032864A (en) * 2012-12-24 2013-04-10 杭州燃油锅炉有限公司 Vertical coal powder corner tube boiler
CN103212284A (en) * 2013-03-15 2013-07-24 孙琦 Method and device for combined removal of nitric oxide and sulfide in flue gas
CN204062982U (en) * 2014-08-04 2014-12-31 孙宇健 A kind of two drum spray denitration sedimentation separation corner tube boiler

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002177740A (en) * 2000-12-15 2002-06-25 Ishikawajima Harima Heavy Ind Co Ltd Denitration apparatus for waste heat recovery boiler
CN2935003Y (en) * 2006-08-11 2007-08-15 江苏双良锅炉有限公司 Single drum horizontal type coal hot water boiler with boiler shell coal-saver angle pipe support structure
CN101949531A (en) * 2010-09-14 2011-01-19 天津宝成机械集团有限公司 Novel layer burning boiler
CN202442314U (en) * 2012-01-19 2012-09-19 哈尔滨市金京锅炉有限公司 Double-boiler barrel transverse type fixed honeycomb fire grate plant fuel steam boiler
CN103032864A (en) * 2012-12-24 2013-04-10 杭州燃油锅炉有限公司 Vertical coal powder corner tube boiler
CN103212284A (en) * 2013-03-15 2013-07-24 孙琦 Method and device for combined removal of nitric oxide and sulfide in flue gas
CN204062982U (en) * 2014-08-04 2014-12-31 孙宇健 A kind of two drum spray denitration sedimentation separation corner tube boiler

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