CN203586175U - Waste heat boiler with convection banks for cooling coal gas - Google Patents
Waste heat boiler with convection banks for cooling coal gas Download PDFInfo
- Publication number
- CN203586175U CN203586175U CN201320755576.XU CN201320755576U CN203586175U CN 203586175 U CN203586175 U CN 203586175U CN 201320755576 U CN201320755576 U CN 201320755576U CN 203586175 U CN203586175 U CN 203586175U
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- Prior art keywords
- boiler
- waste heat
- panel casing
- fin panel
- side fin
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- Expired - Lifetime
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- 238000001816 cooling Methods 0.000 title claims abstract description 29
- 239000003034 coal gas Substances 0.000 title claims abstract description 22
- 239000002918 waste heat Substances 0.000 title claims abstract description 21
- 239000000498 cooling water Substances 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 239000002826 coolant Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 9
- 239000000428 dust Substances 0.000 abstract description 5
- 238000005260 corrosion Methods 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 238000002485 combustion reaction Methods 0.000 abstract description 3
- 239000012528 membrane Substances 0.000 abstract 6
- 238000004140 cleaning Methods 0.000 abstract 1
- 230000008021 deposition Effects 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000002956 ash Substances 0.000 description 18
- 239000003245 coal Substances 0.000 description 10
- 238000002309 gasification Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000003670 easy-to-clean Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000013517 stratification Methods 0.000 description 3
- 239000010881 fly ash Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 210000000476 body water Anatomy 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The utility model relates to a waste heat boiler with convection banks for cooling coal gas. The waste heat boiler is characterized in that a full-membrane wall structure of upper and lower boiler cylinders is adopted to form a closed water cooling system around the boiler, a right membrane water cooling wall, a front membrane water cooling wall, a left membrane water cooling water and a rear membrane water cooling wall are arranged around the boiler, the convection bank is arranged in a combustion chamber, boiler walls and protection plates are arranged outside the combustion chamber, an inlet flue is arranged in the front of the boiler, the upper boiler cylinder and the lower boiler cylinder are longitudinally arranged at the top and the bottom of the convection bank respectively, an outlet flue is arranged in the rear of the boiler, ash buckets are arranged on the left side and the right side of the lower boiler cylinder, snakelike convection banks are arranged in the ash buckets, and an inlet header and an outlet header are arranged on the lower portion and the upper portion of each ash bucket respectively. The waste heat boiler has the advantages of low-load operation capability, resistance to dust deposition and easiness in ash cleaning, and is sufficient in heating area, effective in cooling and capable of effectively preventing low-temperature corrosion. In addition, the waste heat boiler with the full-membrane wall structure is structurally simple and convenient and effective in sealing, and the service life of the waste heat boiler can be greatly prolonged.
Description
Technical field
The utility model relates to a kind of waste heat boiler, particularly a kind of waste heat boiler that utilizes the cooling coal gas of convection bank.
Background technology
New type coal gasification technology is to realize the efficient important technical of utilizing of Coal Clean, Development of New Generation coal gasification, be not only economy, rationally, effectively utilize the important channel of coal resources, be also the basis of Future Development Chemical Industry.Air flow bed bed pulverized coal gasification technology is one of state-of-the-art Coal Gasification Technology in the world at present, and its coal adaptability is strong, and consumption of raw materials is low, and coal conversion is high, has represented the Developing mainstream of Coal Gasification Technology, has application prospect widely.At present, prior art is in whole gasification system, and waste heat boiler is important part, and saturation water is become to saturated vapor, reduces the temperature of coal gas.Because coal gasification dust content of gas is out large, fine ash drops and is difficult to cooling and easily causes spontaneous combustion, and because medium is coal gas, boiler integral sealing complexity and easily existence are revealed, waste heat boiler efficiency is low, need to consume a large amount of steel, thereby has reduced the economic benefit of steamer.
Summary of the invention
The utility model has overcome the defect of above-mentioned existence, object is for realizing the better cooling coal gas of waste heat boiler, adopt boiler drum vertical form, Natural Circulation, steel construction, lower support, centre to be provided with the project organization of convection bank, the thermal efficiency that improves boiler, provides a kind of waste heat boiler that utilizes the cooling coal gas of convection bank.
The utility model utilizes the waste heat boiler content Description of the cooling coal gas of convection bank:
The utility model utilizes the waste heat boiler of the cooling coal gas of convection bank, it is characterized in that, is by right side fin panel casing, front side fin panel casing, left side fin panel casing, rear side fin panel casing, furnace wall, backplate, convection bank, upper drum, lower drum, inlet flue duct, exhaust pass, ash bucket, snakelike tube bank, cooling water inlet header and coolant outlet header form, and adopt full film type wall structure, in the surrounding of boiler furnace, pass through to arrange right side fin panel casing, front side fin panel casing, left side fin panel casing and rear side fin panel casing form the water-cooling structure of a sealing, in the middle of burner hearth, be provided with convection bank, burner hearth outer setting furnace wall and backplate, body of heater front portion is provided with inlet flue duct, upper drum is longitudinally arranged in the top of convection bank, lower drum is longitudinally arranged in the bottom of convection bank, rear end at body of heater arranges exhaust pass, two ash buckets of each side layout at lower drum, ash bucket inside arranges snakelike tube bank, below, ash bucket outside arranges cooling water inlet header, and top, ash bucket outside arranges coolant outlet header.
The utility model is coal gas cooling residual heat boiler, has underrun ability, and the features such as anti-dust stratification, easy-to-clean ash, have enough heating surface areas, good cooling results, effectively prevents cold end corrosion, adopts full film type wall structure, convenience simple in structure, good sealing effect, can improve service life greatly.
Accompanying drawing explanation
Fig. 1 is the waste heat boiler structural representation that utilizes the cooling coal gas of convection bank;
Fig. 2 is the side view of Fig. 1.
In figure: the 1st, right side fin panel casing, the 2nd, front side fin panel casing, the 3rd, left side fin panel casing, the 4th, rear side fin panel casing, the 5th, furnace wall, the 6th, backplate, the 7th, convection bank, the 8th, upper drum, the 9th, lower drum, the 10th, inlet flue duct, the 11st, exhaust pass, the 12nd, ash bucket, the 13rd, snakelike tube bank, the 14th, cooling water inlet header, the 15th, coolant outlet header.
The specific embodiment
The utility model utilizes the waste heat boiler of the cooling coal gas of convection bank to be achieved in that below in conjunction with accompanying drawing and illustrates.
See Fig. 1, Fig. 2, the utility model utilizes the waste heat boiler of the cooling coal gas of convection bank, is by right side fin panel casing 1, front side fin panel casing 2, left side fin panel casing 3, rear side fin panel casing 4, furnace wall 5, backplate 6, convection bank 7, upper drum 8, lower drum 9, inlet flue duct 10, exhaust pass 11, ash bucket 12, snakelike tube bank 13, cooling water inlet header 14 and coolant outlet header 15 form, and adopt full film type wall structure, in the surrounding of boiler furnace, pass through to arrange right side fin panel casing 1, front side fin panel casing 2, left side fin panel casing 3 and rear side fin panel casing 4 form the water-cooling structure of a sealing, in the middle of burner hearth, be provided with convection bank 7, burner hearth outer setting furnace wall 5 and backplate 6, body of heater front portion is provided with inlet flue duct 10, upper drum 8 is longitudinally arranged in the top of convection bank 7, lower drum 9 is longitudinally arranged in the bottom of convection bank 7, in the rear end of body of heater, exhaust pass 11 is set, two ash buckets 12 of each side layout at lower drum 9, totally 4 ash buckets, ash bucket 12 inside arrange snakelike convection bank 13, and the outside below of ash bucket 12 arranges cooling water inlet header 14, and the outside top of ash bucket 12 arranges coolant outlet header 15.
The utility model utilizes the coal gas flow process of the waste heat boiler of the cooling coal gas of convection bank to be: coal gas enters convection bank 7 heat convections at inlet flue duct 10, after 2 180 ° of corners, part coal gas is cooling with the flyash together snakelike tube bank 13 in ash flue bucket 12, then discharge separated with flyash, another part coal gas is directly discharged at exhaust pass 11.
Utilize the Water flow-path of the waste heat boiler of the cooling coal gas of convection bank to be: feedwater is assigned to right side fin panel casing 1, front side fin panel casing 2, left side fin panel casing 3, rear side fin panel casing 4 and convection bank 7 through upper drum 8 simultaneously, through Natural Circulation steam, still by upper drum 8, drawn, another part chilled(cooling) water return (CWR) is in parallel with boiler body loop, cooling water enters into snakelike tube bank 13 by cooling water inlet header 14, then discharges by coolant outlet header 15.
The utility model is full film type wall structure, and heating surface can free wxpansion, has simplified boiler structure, has saved steel, adopts the accumulation of heat of full film type wall light boiler setting few.The snakelike tube bank water circulation system of ash bucket is in parallel with boiler body water circulation system, guarantees boiler operatiopn safety, and boiler body Natural Circulation, because burner hearth is wider, has reduced the deviation of cigarette temperature along furnace chamber width.Have: good airproof performance, reduced investment, protective value are good, the foot of exerting oneself, avoided cold end corrosion and anti-dust stratification, easy-to-clean ash, the feature such as operating maintenance is convenient, maintenance cost is low.
The utility model is a kind of coal gas cooling residual heat boiler, sealing is had to strict requirement, in employing, lower drum full film type wall structure can better seal, and has underrun ability, the characteristics such as anti-dust stratification, easy-to-clean ash, there is enough heating surface areas, guarantee exerting oneself of boiler, effectively prevent the measure of cold end corrosion, boiler radiation heating-surface adopts film-type water-cooling structure, good airproof performance, can improve service life greatly.
Claims (1)
1. a waste heat boiler that utilizes the cooling coal gas of convection bank, is characterized in that: be by right side fin panel casing (1), front side fin panel casing (2), left side fin panel casing (3), rear side fin panel casing (4), furnace wall (5), backplate (6), convection bank (7), upper drum (8), lower drum (9), inlet flue duct (10), exhaust pass (11), ash bucket (12), snakelike tube bank (13), cooling water inlet header (14) and coolant outlet header (15) form, and adopt full film type wall structure, in the surrounding of boiler furnace, pass through to arrange right side fin panel casing (1), front side fin panel casing (2), left side fin panel casing (3) and rear side fin panel casing (4) form the water-cooling structure of a sealing, in the middle of burner hearth, be provided with convection bank (7), burner hearth outer setting furnace wall (5) and backplate (6), body of heater front portion is provided with inlet flue duct (10), upper drum (8) is longitudinally arranged in the top of convection bank (7), lower drum (9) is longitudinally arranged in the bottom of convection bank (7), exhaust pass (11) is set in the rear end of body of heater, two ash buckets of each side layout (12) at lower drum (9), ash bucket (12) inside arranges snakelike tube bank (13), the outside below of ash bucket (12) arranges cooling water inlet header (14), the outside top of ash bucket (12) arranges coolant outlet header (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320755576.XU CN203586175U (en) | 2013-11-27 | 2013-11-27 | Waste heat boiler with convection banks for cooling coal gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320755576.XU CN203586175U (en) | 2013-11-27 | 2013-11-27 | Waste heat boiler with convection banks for cooling coal gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203586175U true CN203586175U (en) | 2014-05-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320755576.XU Expired - Lifetime CN203586175U (en) | 2013-11-27 | 2013-11-27 | Waste heat boiler with convection banks for cooling coal gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203586175U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615711A (en) * | 2013-11-27 | 2014-03-05 | 鞍山锅炉厂有限公司 | Heat recovery boiler cooling gas with convection banks |
| CN110360536A (en) * | 2019-06-20 | 2019-10-22 | 上海铭芮节能科技有限公司 | A kind of New-type boiler flue gas energy-efficient treatment system |
-
2013
- 2013-11-27 CN CN201320755576.XU patent/CN203586175U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615711A (en) * | 2013-11-27 | 2014-03-05 | 鞍山锅炉厂有限公司 | Heat recovery boiler cooling gas with convection banks |
| CN110360536A (en) * | 2019-06-20 | 2019-10-22 | 上海铭芮节能科技有限公司 | A kind of New-type boiler flue gas energy-efficient treatment system |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140507 |
|
| CX01 | Expiry of patent term |