CN202647697U - Medium-sized coal water slurry combustion boiler - Google Patents

Medium-sized coal water slurry combustion boiler Download PDF

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Publication number
CN202647697U
CN202647697U CN 201120560772 CN201120560772U CN202647697U CN 202647697 U CN202647697 U CN 202647697U CN 201120560772 CN201120560772 CN 201120560772 CN 201120560772 U CN201120560772 U CN 201120560772U CN 202647697 U CN202647697 U CN 202647697U
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CN
China
Prior art keywords
boiler
water
pipe
furnace
medium
Prior art date
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
CN 201120560772
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Chinese (zh)
Inventor
杨宏
陶丽
贺柳良
李玉洲
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Beijing University of Civil Engineering and Architecture
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Beijing University of Civil Engineering and Architecture
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beijing University of Civil Engineering and Architecture filed Critical Beijing University of Civil Engineering and Architecture
Priority to CN 201120560772 priority Critical patent/CN202647697U/en
Application granted granted Critical
Publication of CN202647697U publication Critical patent/CN202647697U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a medium-sized coal water slurry combustion boiler, comprising a boiler body, a steel rack, a furnace wall, a combustor, a door, a coal economizer, an air preheater, etc. The boiler body is supported and fixed via the steel rack. Upper and lower boiler barrels are transversely arranged, and the two boiler barrels are connected via a convection pipe bundle. a front water cooling wall pipe is connected with a front collecting box and an upper boiler barrel, forming an independent circulation loop via a front down-flow pipe, the front water cooling wall pipe is adopted as a frame for the top of a precombustion chamber, the lower end of a side water cooling wall pipe is connected with a side collecting box, the upper end is connected with an upper collecting box, the upper collecting box is communicated with the upper boiler barrel via a vapor water guide pipe, two independent loops are formed via front and back side down-flow pipes; a back water cooling wall pipe is led out from a back collecting box, three rows of pipe bundles are in a staggering drawing at the upper end, forming a hearth outlet chimney, and the back water cooling wall pipe extends into the upper boiler barrel and the back down-flow pipe to form a circulating loop. The convection pipe bundles form an S-shaped flue gas flow channel via separating plates, the first row of pipes are separated at intervals, forming furnace inner flue dust separation chambers. Four combustors are fixed on the front wall of the precombustion chamber in two rows, the rated power ratio of the upper row of combustors to the lower row of combustors is 0.6:0.4. Coal water slurry enters into the precombustion chamber for inflammation and combustion, and coke floats and burns out in the hearth. High temperature flue gas enters into the furnace inner flue dust separation chambers via the hearth outlet chimney, separated dust falls into an ash bucket, The high temperature flue gas enters into the coal economizer via the S-shaped flue gas flow channel of the convection pipe bundles, and goes downward to flow out of the boiler via an air preheater. To guarantee safety operation, an anti-explosion door, a manhole door and an inspection door are disposed.

Description

Medium-sized coal-water fluid-fired boiler
Technical field:
The utility model relates to boiler plant, relates in particular to a kind of medium-sized coal-water fluid-fired boiler.
Background technology:
Water-coal-slurry is to realize a kind of cleaning of energy-saving and emission-reduction, the coal based fluid fuel of environmental protection, its good fluidity, and efficiency of combustion is high, and ignition temperature is all lower than fuel oil and burning coal powder, can greatly reduce SO in the combustion process 2Separate out and NO xLife.Increasing Industrial Boiler uses water-coal-slurry to make fuel.
Medium-sized coal-water fluid-fired boiler of the prior art, owing to reasons such as its structures, combustion instability, the thermal efficiency is low, easily coking, slagging scorification in the burner hearth.
The utility model content:
The utility model provides a kind of advanced design, and is rational in infrastructure, flameholding, and the thermal efficiency is high, noncoking in the burner hearth, not slagging scorification, the medium-sized coal-water fluid-fired boiler of energy-conserving and environment-protective.
For above-mentioned purpose, the utility model by the following technical solutions: a kind of medium-sized coal-water fluid-fired boiler comprises boiler body, steelframe, furnace wall, burner, class, economizer, air preheater.
Boiler body comprises water screen tube, upper and lower drum and convection bank.It is characterized in that: boiler body is supported fixing by steelframe, upper and lower drum lateral arrangement is connected by convection bank between two drums at the middle part of body of heater.Water screen tube and furnace wall have been set up precombustion chamber and burner hearth.The first row pipe way of convection bank is every separately having formed in-furnace dust dirt separation chamber, and all the other tube banks have formed S shape flue gas flow passage with dividing plate.Water screen tube comprises front water screen tube, rear water screen tube and side water wall tube, and front water screen tube lower end is connected with front header, and the upper end is connected with upper drum, has formed an independent circulation circuit by front down-comer; The side water wall tube lower end connects the side header, and the upper end connects upper collecting chamber, and upper collecting chamber is communicated with upper drum by the carbonated drink conduit, forms two independent loops by forward and backward side down-comer; The upper end of rear water screen tube connects upper drum, and the lower end connects rear set box, and rear down-comer consists of a closed circuit.Three comb Shu Zucheng have been pulled open in the upper end stagger arrangement of rear water screen tube furnace outlet smokestack.
The burner that the utility model is arranged, minute upper and lower two rows are installed on the precombustion chamber front wall, and the rated power of upper row's burner is greater than the rated power of lower row's burner, and upper and lower burner rated power ratio is 0.6: 0.4.For the stabilize water coal slurry fully catches fire, the flame characteristics according to burner is provided with foldede flame wall at furnace bottom.Water-coal-slurry enters precombustion chamber after atomizing by burner, finishes rapidly the heating power preparatory stage of burning, the volatile matter ignition, and then coke burns in burner hearth.High-temperature flue gas leaves burner hearth and enters in-furnace dust dirt separation chamber through the furnace outlet smokestack, falls into ash bucket after the dust separation, and high-temperature flue gas flows into convection bank S shape flue gas flow passage, and the economizer that enters full of twists and turns is descending through air preheater outflow boiler again.
Described class comprises anti-riot door, manhole door and inspection door.
Description of drawings:
Fig. 1 is the structural representation of an embodiment of the utility model.
Fig. 2 is A-A and the B-B associating cutaway view of Fig. 1.
Fig. 3 is the C-C cutaway view of Fig. 1.
The specific embodiment:
The utility model is described in further detail below in conjunction with drawings and Examples.
A kind of medium-sized coal-water fluid-fired boiler comprises boiler body 1, steelframe 2, and furnace wall 3, burner 4, door is 5, economizer 6, air preheater 7 etc.
Described boiler body 1 comprises water screen tube 11, upper and lower drum 12,13 and convection bank 14.Boiler body 1 supports fixing by steelframe 2.Upper drum 12 and lower drum 13 lateral arrangement are connected by convection bank 14 between two drums at the middle part of body of heater.Water screen tube 11 and furnace wall 3 have been set up precombustion chamber 8 and burner hearth 9, and first row pipe 141 intervals of convection bank 14 have separately formed in-furnace dust dirt separation chamber 92, and all the other tube banks have formed S shape flue gas flow passage with dividing plate 33.Water screen tube 11 comprises front water screen tube 111, rear water screen tube 113 and side water wall tube 112.Front water screen tube 111 lower ends are connected with front header 151, and the upper end is connected with upper drum 12, have formed an independent circulation circuit by front down-comer 161; Side water wall tube 112 lower ends connect side header 152, and the upper end connects upper collecting chamber 154, and upper collecting chamber 154 is communicated with upper drum 12 by carbonated drink conduit 165, has formed two independent loops by forward and backward side down-comer 162,164; Rear water screen tube 113 upper ends connect upper drum 12, and the lower end connects rear set box 153, and rear down-comer 163 composition closed circuits, and three comb bundles are pulled open in rear water screen tube 113 upper end stagger arrangement, have formed furnace outlet smokestack 91.
Described burner 4, minute two rows are installed on the precombustion chamber front wall 31, and the rated power of upper row's burner is greater than the rated power of lower row's burner, and its rated power ratio is 0.6: 0.4.Water-coal-slurry enters precombustion chamber 8 after atomizing by burner 4, water-coal-slurry is subject to the photothermal intense radiation of furnace wall and is stopped directly the washing away of high-temperature flue gas of backflow by foldede flame wall 32 in precombustion chamber 8, promptly preheating, drying, volatile matter effusion ignition, coke burns in burner hearth 9.High-temperature flue gas enters dust separation chamber 92 through furnace outlet smokestack 91, falls into ash bucket 93 after the dust separation, enters economizer 6 behind the S shape flue gas flow passage of high-temperature flue gas inflow convection bank 14, and is descending through air preheater 7 outflow boilers again.
Also comprise the anti-riot door 51 shown in the figure, manhole door 52 and inspection door 53.

Claims (5)

1. medium-sized coal-water fluid-fired boiler, comprise boiler body (1), steelframe (2), furnace wall (3), burner (4), class (5), economizer (6), air preheater (7), it is characterized in that: boiler body (1) is supported by steelframe (2) and is fixing, on, lower drum (12), (13) lateral arrangement is at the body of heater middle part, connected by convection bank (14) between two drums, water screen tube (11) and furnace wall (3) have been set up precombustion chamber (8) and burner hearth (9), and first row pipe (141) spacing bias of convection bank (14) has formed in-furnace dust dirt separation chamber (92), and all the other tube banks have formed S shape flue gas flow passage with dividing plate (33).
2. medium-sized coal-water fluid-fired boiler according to claim 1, it is characterized in that described water screen tube (11) comprises front water screen tube (111), rear water screen tube (113) and side water wall tube (112), front water screen tube (111) lower end is connected with front header (151), the upper end is connected with upper drum (12), formed an independent circulation circuit by front down-comer (161), side water wall tube (112) lower end connects side header (152), the upper end connects upper collecting chamber (154), upper collecting chamber (154) is communicated with upper drum (12) by carbonated drink conduit (165), by front, rear side down-comer (162), (164) form two independent loops, rear water screen tube (113) upper end connects upper drum (12), the lower end connects rear set box (153), and rear down-comer (163) forms closed circuit.
3. medium-sized coal-water fluid-fired boiler according to claim 2 is characterized in that described rear water screen tube (113) upper end stagger arrangement pulls open into three comb bundles, has formed furnace outlet smokestack (91).
4. medium-sized coal-water fluid-fired boiler according to claim 1 is characterized in that described burner (4) minute two rows are installed on the precombustion chamber front wall (31), and the rated power ratio of upper and lower row's burner is 0.6: 0.4.
5. medium-sized coal-water fluid-fired boiler according to claim 1 is characterized in that described class (5) comprises anti-riot door (51), manhole door (52) and inspection door (53).
CN 201120560772 2011-12-29 2011-12-29 Medium-sized coal water slurry combustion boiler Expired - Fee Related CN202647697U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201120560772 CN202647697U (en) 2011-12-29 2011-12-29 Medium-sized coal water slurry combustion boiler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201120560772 CN202647697U (en) 2011-12-29 2011-12-29 Medium-sized coal water slurry combustion boiler

Publications (1)

Publication Number Publication Date
CN202647697U true CN202647697U (en) 2013-01-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201120560772 Expired - Fee Related CN202647697U (en) 2011-12-29 2011-12-29 Medium-sized coal water slurry combustion boiler

Country Status (1)

Country Link
CN (1) CN202647697U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104806994A (en) * 2015-04-29 2015-07-29 鲍守明 Film type smoke isolation wall threaded pipe convection pipe bundle longitudinal heat exchange water pipe boiler
CN104848202A (en) * 2015-05-26 2015-08-19 苏州福利恒电子科技有限公司 Efficient environment-friendly boiler

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104806994A (en) * 2015-04-29 2015-07-29 鲍守明 Film type smoke isolation wall threaded pipe convection pipe bundle longitudinal heat exchange water pipe boiler
CN104806994B (en) * 2015-04-29 2016-07-27 鲍守明 Membrane wall brick baffle corrugated tubing convection bank longitudinal direction heat exchange type water-tube boiler
CN104848202A (en) * 2015-05-26 2015-08-19 苏州福利恒电子科技有限公司 Efficient environment-friendly boiler

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

Granted publication date: 20130102

Termination date: 20131229

C17 Cessation of patent right