CN105180157A - Shell type fire tube circulating fluidized bed boiler - Google Patents
Shell type fire tube circulating fluidized bed boiler Download PDFInfo
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- CN105180157A CN105180157A CN201510627283.7A CN201510627283A CN105180157A CN 105180157 A CN105180157 A CN 105180157A CN 201510627283 A CN201510627283 A CN 201510627283A CN 105180157 A CN105180157 A CN 105180157A
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- convection bank
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Abstract
The invention relates to a shell type fire tube circulating fluidized bed boiler. A hearth water-cooling wall is formed by a cavity formed by a hearth inner wall of a jacket structure; a water cavity of the boiler is communicated with the hearth water-cooling wall, and the lateral wall of a cyclone separator and the periphery of a flue convection bank are both communicated with the water cavity of the boiler; the flue convection bank comprises a downstream flue convection bank body and an upstream flue convection bank body, an inner smoke opening is formed in the upper portion of an inner cavity of the cyclone separator and communicated with an upper smoke box a, and the upper smoke box a is communicated with the downstream flue convection bank body; and the downstream flue convection bank body is communicated with the upstream flue convection bank body through a lower smoke box, and the upper end of the upstream flue convection bank body is connected with an upper smoke box b which is provided with a smoke outlet. According to the shell type fire tube circulating fluidized bed boiler, a circulating fluidized bed boiler water tube type water-cooling wall is changed into the hearth inner wall type water-cooling wall of the jacket structure; and the convection bank is communicated with the cyclone separator, so that smoke flows through the flue convection bank to be discharged out, and the aim of miniaturization of the circulating fluidized bed boiler is effectively achieved.
Description
Technical field
The present invention relates to heat power equipment technical field, particularly a kind of pan shell type fire tube CFBB.
Background technology
Clean coal technology is that our times various countries solve one of dominant technology of the environmental problem caused by coal, a key areas of the international high-tech competition of Ye Shi.Current Combustion technology of circulating fluidized is the reasonable Filter Tuber For Clean Coal combustion technology of current commercialization degree, and industrial CFBB has energy-conserving and environment-protective, feature that the thermal efficiency is high,
CFBB the energy and electricity market has suitable vitality at home and abroad.But because the design of burner hearth will have water-cooling wall, and the design of water-cooling wall is at present water pipe structure, volume is larger, steel consumption is many, and cooling effectiveness is low, so cannot miniaturization be realized, generally be communicated with boiler water in convection bank, leak water in convection bank, flue gas carries out heat exchange in convection bank outside, because boiler water generally has certain hydraulic pressure, the security risk that greatly easily causes of convection bank hydraulic pressure by this way, the structural design of boiler is restricted, the miniaturization of fluidized-bed combustion boiler is caused to be restricted, current CFBB is caused to there is no method application at below 4t/h (2.8 megawatt).So small-sized industrial and mining enterprises can only adopt the small scall coal-fired boiler of multilayer combustion technology, cause the present situation of the large pollution of semiworks, so be badly in need of realizing CFBB miniaturization, to change the combustion technology of existing semiworks, improve the thermal efficiency, reduce and pollute.
Summary of the invention
For the deficiencies in the prior art, the present invention aims to provide a kind of pan shell type fire tube CFBB, has that volume is little, compact conformation, efficiency of combustion are high, the feature of good environmental protection.
To achieve these goals, the present invention adopts following technical scheme:
A kind of pan shell type fire tube CFBB, comprise the heat-insulation layer being arranged at boiler exterior, boiler internal comprises an air compartment, fluid bed, burner hearth, cyclone separator, bipolar injection material returning device, sedimentation pipe below described cyclone separator is communicated with bipolar injection material returning device, bipolar injection material returning device side is communicated with fluid bed, described burner hearth surrounding is provided with furnace wall cooling, furnace wall cooling is that the cavity formed by jacket structured inboard wall of burner hearth is formed, the cavity top that jacket structured inboard wall of burner hearth is formed connects boiler water cavity, boiler water cavity is connected with furnace wall cooling, the sidewall of cyclone separator is all connected with boiler water cavity with around flue convection bank, flue convection bank comprises down pass convection bank and updraught flue convection bank, cyclone separator inner chamber top is provided with interior mouth, interior mouth is communicated with upper smoke box a, upper smoke box a is communicated with down pass convection bank, down pass convection bank is connected with updraught flue convection bank by lower smoke box, updraught flue convection bank upper end connects upper smoke box b, upper smoke box b is provided with outlet flue.
Described cyclone separator, upper smoke box a, upper smoke box b, lower smoke box, down pass convection bank and updraught flue convection bank are all wrapped and are arranged in boiler water cavity.
Cyclone separator is positioned at the outer sidewall of pan shell type fire tube CFBB and does not arrange the water-cooling wall be communicated with boiler water cavity.
Smoke pipe in flue convection bank is threaded flue.
The top of boiler water cavity is provided with hot water outlet bottom and establishes cooling water inlet.
Lower smoke box is also provided with ash disposal mouth.
Beneficial effect of the present invention is: the present invention changes circulating fluidized bed boiler water pipe-type water-cooling wall into jacket structured inboard wall of burner hearth formula water-cooling wall, make chamber structure compacter, reduce CFBB volume, solve CFBB miniaturization issues; Cyclone separator is communicated with by convection bank, discharge after making flue gas flow through smoke convection tube bank, both can sufficient heat exchange, turn avoid convection bank be communicated with boiler water and make the security risk that convection bank hydraulic pressure causes greatly, convection bank connects cyclone separator also can be compacter when designing; Smoke pipe in convection bank is designed to threaded flue, makes liquid turbulization in convection bank increase heat-exchange time and improve heat exchange efficiency.The present invention effectively solves CFBB miniaturization issues, makes Combustion technology of circulating fluidized can effectively be applied to small-power burning boiler.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention;
Fig. 2 is the A-A generalized section of Fig. 1;
Fig. 3 is the B-B generalized section of Fig. 1.
Detailed description of the invention
Below with reference to accompanying drawing, the invention will be further described, it should be noted that, the present embodiment, premised on the technical program, give detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to the present embodiment.
As Fig. 1, 2, shown in 3, a kind of pan shell type fire tube CFBB, comprise the heat-insulation layer being arranged at boiler exterior, boiler internal comprises an air compartment 17, fluid bed 18, burner hearth 14, cyclone separator 1, bipolar injection material returning device 3, sedimentation pipe below described cyclone separator 1 is communicated with bipolar injection material returning device 3, bipolar injection material returning device 3 side is communicated with fluid bed 18, described burner hearth 14 surrounding is provided with furnace wall cooling 16, furnace wall cooling 16 is that the cavity formed by jacket structured inboard wall of burner hearth is formed, the cavity top that jacket structured inboard wall of burner hearth is formed connects boiler water cavity 15, boiler water cavity 15 is connected with furnace wall cooling 16, the sidewall of cyclone separator 1 is all connected with boiler water cavity 15 with around flue convection bank, flue convection bank comprises down pass convection bank 2 and updraught flue convection bank 7, cyclone separator 1 inner chamber top is provided with interior mouth 12, interior mouth 12 is communicated with upper smoke box a10, upper smoke box a10 is communicated with down pass convection bank, down pass convection bank 2 is connected with updraught flue convection bank 7 by lower smoke box 6, updraught flue convection bank upper end connects upper smoke box b8, upper smoke box b8 is provided with outlet flue 9.
Described cyclone separator 1, upper smoke box a10, upper smoke box b8, lower smoke box 6, down pass convection bank 2 and updraught flue convection bank 7 are all wrapped and are arranged in boiler water cavity 15.
Cyclone separator 1 is positioned at the outer sidewall of pan shell type fire tube CFBB and does not arrange the water-cooling wall be communicated with boiler water cavity 15.
Smoke pipe in flue convection bank is threaded flue.
The top of boiler water cavity 15 is provided with hot water outlet 13 bottom and establishes cooling water inlet 4.
Lower smoke box 6 is also provided with ash disposal mouth 5.
During work, fuel is fluidized bed combustion in burner hearth 14, and furnace wall cooling 16 pairs of burner hearths 14 carry out heat exchange cooling, and flue gas enters cyclone separator 1 by flue 11, unburned particulate, after cyclone separator is separated, sends circulating combustion above fluid bed 18 back to by bipolar injection material returning device 3; High-temperature fuel gas in cyclone separator 1 enters upper smoke box a10 through interior mouth 12, then successively through down pass convection bank 2, lower smoke box 6, updraught flue convection bank 7, upper smoke box b8, finally flows out from outlet flue 9.
For a person skilled in the art, according to above technical scheme and design, various corresponding change and distortion can be provided, and all these change and distortion all should be included within the protection domain of the claims in the present invention.
Claims (6)
1. a pan shell type fire tube CFBB, comprise the heat-insulation layer being arranged at boiler exterior, boiler internal comprises an air compartment (17), fluid bed (18), burner hearth (14), cyclone separator (1), bipolar injection material returning device (3), the sedimentation pipe of described cyclone separator (1) below is communicated with bipolar injection material returning device (3), bipolar injection material returning device (3) side is communicated with fluid bed (18), described burner hearth (14) surrounding is provided with furnace wall cooling (16), it is characterized in that: furnace wall cooling (16) is that the cavity formed by jacket structured inboard wall of burner hearth is formed, the cavity top that jacket structured inboard wall of burner hearth is formed connects boiler water cavity (15), boiler water cavity (15) is connected with furnace wall cooling (16), the sidewall of cyclone separator (1) is all connected with boiler water cavity (15) with around flue convection bank, flue convection bank comprises down pass convection bank (2) and updraught flue convection bank (7), cyclone separator (1) inner chamber top is provided with interior mouth (12), interior mouth (12) is communicated with upper smoke box a (10), upper smoke box a (10) is communicated with down pass convection bank, down pass convection bank (2) is connected with updraught flue convection bank (7) by lower smoke box (6), updraught flue convection bank upper end connects upper smoke box b (8), upper smoke box b (8) is provided with outlet flue (9).
2. described a kind of pan shell type fire tube CFBB according to claim 1, is characterized in that: cyclone separator (1), upper smoke box a (10), upper smoke box b (8), lower smoke box (6), down pass convection bank (2) and updraught flue convection bank (7) are all wrapped and are arranged in boiler water cavity (15).
3. described a kind of pan shell type fire tube CFBB according to claim 1 and 2, is characterized in that: cyclone separator (1) is positioned at the outer sidewall of pan shell type fire tube CFBB and does not arrange the water-cooling wall be communicated with boiler water cavity (15).
4. described a kind of pan shell type fire tube CFBB according to claim 1, is characterized in that: the smoke pipe in flue convection bank is threaded flue.
5. described a kind of pan shell type fire tube CFBB according to claim 1, is characterized in that: the top of boiler water cavity (15) is provided with hot water outlet (13) bottom and establishes cooling water inlet (4).
6. described a kind of pan shell type fire tube CFBB according to claim 1, is characterized in that: lower smoke box (6) is also provided with ash disposal mouth (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510627283.7A CN105180157A (en) | 2015-09-29 | 2015-09-29 | Shell type fire tube circulating fluidized bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510627283.7A CN105180157A (en) | 2015-09-29 | 2015-09-29 | Shell type fire tube circulating fluidized bed boiler |
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| Publication Number | Publication Date |
|---|---|
| CN105180157A true CN105180157A (en) | 2015-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510627283.7A Pending CN105180157A (en) | 2015-09-29 | 2015-09-29 | Shell type fire tube circulating fluidized bed boiler |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183012A (en) * | 2011-05-19 | 2011-09-14 | 郭古金 | Industrial and civil small-scale circulating fluidized bed boiler |
| CN102331082A (en) * | 2011-09-26 | 2012-01-25 | 怀远县巨龙机械制造有限公司 | Energy-saving and environment-friendly hot blast stove |
| CN102460020A (en) * | 2009-06-05 | 2012-05-16 | 综合能源有限公司 | Loop seal for recycling solids from a cyclone and fluidized bed reactor and method using the same |
| CN203829911U (en) * | 2014-05-15 | 2014-09-17 | 北京洛卡环保技术有限公司 | SNCR (selective non-catalytic reduction) denitration system of circulating fluidized bed boiler |
| CN104315505A (en) * | 2014-10-15 | 2015-01-28 | 陕西启源科技发展有限责任公司 | Circulating fluidized bed boiler |
| CN204986987U (en) * | 2015-09-29 | 2016-01-20 | 河北鑫华新锅炉制造有限公司 | Shell formula firetube circulating fluidized bed boiler |
-
2015
- 2015-09-29 CN CN201510627283.7A patent/CN105180157A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102460020A (en) * | 2009-06-05 | 2012-05-16 | 综合能源有限公司 | Loop seal for recycling solids from a cyclone and fluidized bed reactor and method using the same |
| CN102183012A (en) * | 2011-05-19 | 2011-09-14 | 郭古金 | Industrial and civil small-scale circulating fluidized bed boiler |
| CN102331082A (en) * | 2011-09-26 | 2012-01-25 | 怀远县巨龙机械制造有限公司 | Energy-saving and environment-friendly hot blast stove |
| CN203829911U (en) * | 2014-05-15 | 2014-09-17 | 北京洛卡环保技术有限公司 | SNCR (selective non-catalytic reduction) denitration system of circulating fluidized bed boiler |
| CN104315505A (en) * | 2014-10-15 | 2015-01-28 | 陕西启源科技发展有限责任公司 | Circulating fluidized bed boiler |
| CN204986987U (en) * | 2015-09-29 | 2016-01-20 | 河北鑫华新锅炉制造有限公司 | Shell formula firetube circulating fluidized bed boiler |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| CB02 | Change of applicant information |
Address after: 074000, 188 North Main Street, Baoding, Hebei, Gaobeidian Applicant after: Hebei Xinhua new environmental technology Co. Ltd. Address before: 074000, 188 North Main Street, Baoding, Hebei, Gaobeidian Applicant before: Xinhua New Boiler Mfg. Co., Ltd., Hebei |
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| COR | Change of bibliographic data | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151223 |
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| RJ01 | Rejection of invention patent application after publication |