CN203115999U - Vapor-liquid self-circulation type cooling revert device of biomass boiler - Google Patents
Vapor-liquid self-circulation type cooling revert device of biomass boiler Download PDFInfo
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- CN203115999U CN203115999U CN 201320103355 CN201320103355U CN203115999U CN 203115999 U CN203115999 U CN 203115999U CN 201320103355 CN201320103355 CN 201320103355 CN 201320103355 U CN201320103355 U CN 201320103355U CN 203115999 U CN203115999 U CN 203115999U
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Abstract
The utility model discloses a vapor-liquid self-circulation type cooling revert device of a biomass boiler. The film type water wall storage bin of the device comprises heated pipes vertically arranged in a circumferential direction and forming a tube panel, the heated pipes are in seamless connection through flat steel, the upper ends and the lower ends of the heated pipes are respectively connected with an upper part outlet header and a lower part inlet header through a connecting pipe system, the upper part outlet header is connected with the input end of a boiler barrel of the boiler through an outlet pipe, and the lower part inlet header is connected with the output end of the boiler barrel of the boiler through a downcomer, so as to form an independent vapor-liquid self-circulation cooling loop of the film type water wall storage bin; a blanking riser is arranged at the upper part of the film type water wall storage bin, a skewed material returning slot is formed in a side wall of the film type water wall storage bin, and the lower part of the film type water wall storage bin is provided in parallel with a fluidization air room corresponding to the blanking riser and a material returning air room corresponding to the material returning skewed slot. Therefore, the stability and the security of a material returning system are enhanced greatly, energy consumption is reduced, and the economical efficiency in boiler running is improved.
Description
Technical field
The utility model relates to generating power with biomass combustion equipment, refers to a kind of biomass boiler vapour-liquid self-circulation type cooling material-returning device particularly.
Background technology
Along with society growing to energy demand, as the fossil fuel in main energy sources source in rapid minimizing.Therefore, seek the focus that a kind of reproducible alternative energy source has become social common concern, wherein the less biomass fuel generating of environmental pollution has obtained using widely.Available biomass fuel mainly contains various agricultural wastes such as rice husk, cotton stalk, rice straw, rape stalk and cornstalk etc., and forestry waste such as branch bavin, timber leftover pieces, tree root etc. are also arranged.These biomass fuels have common ground: the one, and its combustible basis fugitive constituent is very high, mostly more than 80%; The 2nd, the grey proportion that burning produces is little, fusing point is low, at high temperature have certain caking property, when particularly burning agricultural wastes, easily produces slagging scorification and clogging phenomenon, and this must give enough attention in the design of biomass combustion system.
At present, biomass combustion carries out in biomass circulating fluid bed boiler mostly, and its material-returning device mainly contains dual mode:
One, adiabatic material-returning device, the incidental problem of this revert system is: after boiler load improved, the circulating ash temperature in the material returning device rose rapidly, and the residual carbon in the circulating ash is at high temperature burnt vigorous, and this has aggravated the rising of material returning device temperature again; After grey temperature reached certain numerical value, circulating ash just bondd mutually and stops up material returning device, causes the Boiler Ash circulatory system to lose efficacy, and the boiler furnace bed temperature is out of control, and burner hearth average heat transfer intensity reduces, and boiler load descends rapidly.
Two, adopt the cold material-returning device of pure water, this revert system is to adopt a high-pressure pump, water is flowed in the pipeline of material-returning device, to reduce the temperature of circulating ash in the material-returning device, water after the intensification enters economizer as the feedwater of economizer, thus require the pressure of pump to be higher than the pressure of economizer, because the pressure of economizer itself is just very high, this mode can produce bigger energy consumption, influences the economy of boiler operatiopn.
Summary of the invention
The purpose of this utility model will overcome above-mentioned deficiency exactly, and a kind of biomass boiler vapour-liquid self-circulation type cooling material-returning device that can effectively reduce the adherent temperature of circulating ash, the grey circulation reliability of raising is provided.
For achieving the above object, the biomass boiler vapour-liquid self-circulation type cooling material-returning device that the utility model is designed, comprise the fin panel casing feed bin, described fin panel casing feed bin comprises along circumferentially erectting to be arranged and the heat pipe of formation tube panel, by the band steel seamless link, the upper/lower terminal of described heat pipe links to each other with lower inlet collection case with top outlet collection case respectively by connecting piping between the described heat pipe; The top of described fin panel casing feed bin is provided with the blanking standpipe, the sidewall of described fin panel casing feed bin is provided with the returning charge skewed slot, and the bottom of described fin panel casing feed bin is set side by side with the fluidisation air compartment corresponding with the blanking standpipe and the returning charge air compartment corresponding with the returning charge skewed slot; Its special character is: described top outlet collection case links to each other with the input of boiler drum by fairlead, described lower inlet collection case links to each other with the output of boiler drum by down-comer, thereby constitutes independently vapour-liquid self-circulation cooling loop of fin panel casing feed bin.
Further, the tube panel inboard that described heat pipe forms is coated with the abrasion-proof and refractory coating, and described abrasion-proof and refractory coating is welded on the pin of this tube panel inboard and the high-strength abrasion-proof refractory material of coated pin is formed by intensive.Thereby can significantly prolong the service life of tube panel.
Again further, also be provided with peephole on the sidewall of described fin panel casing feed bin, when being convenient to the middle and high load operation of boiler, the mobility status of finder working condition and circulating ash.
Further, the bottom of described fin panel casing feed bin also is provided with valve control ash-removing hole, discharge cycle ash when being convenient in the discharge cycle ash adhesive that forms once in a while and accident condition and blowing out cleaning.
Operation principle of the present utility model is as follows: cooling water absorbs heat in heat pipe arranged side by side, produce a part of steam, form steam water interface, after steam water interface is transported to drum by top outlet collection case, because the density contrast of steam water interface, water will flow downward along down-comer, turn back in the lower inlet collection case, continuation absorbs heat in heat pipe, so just formed natural water circulation, water constantly absorbs the heat of circulating ash in above-mentioned flow process, the temperature of circulating ash just constantly is lowered.
Compared with prior art, advantage of the present utility model is: one, adopt steam water interface as cooling medium, heat transfer temperature difference is big, the heat transfer efficiency height, effectively reduce the adherent temperature of boiler circulating ash, make circulating ash can be because of high temperature in material-returning device coking and blocking, the stability and the security that have greatly improved revert system; Its two, rely on the density contrast between steam and the water to set up the independent loops loop, do not need independent circulating pump is set, reduced energy consumption, improve the economy of boiler operatiopn; Its three, cooled circulating ash can effectively be regulated the temperature of boiler furnace fluid bed, improves combustion stability and the security of biomass circulating fluid bed boiler.
Description of drawings
Fig. 1 is the structural representation of the utility model biomass boiler vapour-liquid self-circulation type cooling material-returning device.
Fig. 2 is the A-A sectional structure schematic diagram among Fig. 1.
Fig. 3 is the B portion structure for amplifying schematic diagram among Fig. 2.
Among the figure: fin panel casing feed bin 1, top outlet collection case 2, lower inlet collection case 3, returning charge air compartment 4, fluidisation air compartment 5, heat pipe 6, band steel 7, fairlead 8, down-comer 9, boiler drum 10, blanking standpipe 11, returning charge skewed slot 12.
The specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Biomass boiler vapour-liquid self-circulation type shown in figure cooling material-returning device, its fin panel casing feed bin 1 comprise along circumferentially erectting to be arranged and forms the heat pipe 6 of tube panel, between the heat pipe 6 by band steel 7 seamless links.The tube panel inboard that heat pipe 6 forms is coated with the abrasion-proof and refractory coating, and this abrasion-proof and refractory coating is welded on the pin of this tube panel inboard and the high-strength abrasion-proof refractory material of coated pin is formed by intensive, can avoid the circulating ash tube panel that is heated that weares and teares like this.The upper/lower terminal of heat pipe 6 links to each other with lower inlet collection case 3 with top outlet collection case 2 respectively by connecting piping, top outlet collection case 2 links to each other with the input of boiler drum 10 by fairlead 8, lower inlet collection case 3 links to each other with the output of boiler drum 10 by down-comer 9, thereby constitutes independently vapour-liquid self-circulation cooling loop of fin panel casing feed bin 1.The top of fin panel casing feed bin 1 is provided with blanking standpipe 11; The sidewall of fin panel casing feed bin 1 is provided with returning charge skewed slot 12; The bottom of fin panel casing feed bin 1 is set side by side with the fluidisation air compartment 5 corresponding with blanking standpipe 11 and the returning charge air compartment 4 corresponding with returning charge skewed slot 12.The sidewall of fin panel casing feed bin 1 is provided with peephole, is convenient to when the middle and high load operation of boiler the working condition of finder and the mobility status of circulating ash.The bottom of fin panel casing feed bin 1 is provided with valve control ash-removing hole, discharge cycle ash when the adhesive of being convenient in the discharge cycle ash to form is once in a while cleared up with accident condition and blowing out.
During work, cooling water absorbs heat in heat pipe arranged side by side 6, produce a part of steam, form steam water interface, steam water interface moves upward along top outlet collection case 2, enter into boiler drum 10 by fairlead 8, because the density contrast of steam water interface, water will flow downward along down-comer 9, turn back in the lower inlet collection case 3, continuation absorbs heat in heat pipe 6, so just formed natural water circulation, constituted independently cooling medium closed circuit of biomass boiler vapour-liquid self-circulation type cooling material-returning device, water is in above-mentioned flow process, constantly absorb the heat of circulating ash, the temperature of circulating ash just constantly is lowered.
Ash mobile in biomass boiler vapour-liquid self-circulation type cooling material-returning device is such: the bottom of device is a fluid bed, fluid bed bottom air feed has divided two zones, be fluidisation air compartment 5 and returning charge air compartment 4, ash at first drops on the fluidisation air compartment 5 of low air quantity by blanking standpipe 11, because the high air quantity zone of close returning charge skewed slot 12 is that the air quantity of returning charge air compartment 4 is big, ash is blown into burner hearth, the ash that is in the fluidisation air compartment 5 in low air quantity zone replenishes the returning charge air compartment 4 that enters high air quantity automatically, so finish ash and flowed into biomass boiler vapour-liquid self-circulation type cooling material-returning device, the process that enters burner hearth from biomass boiler vapour-liquid self-circulation type cooling material-returning device again from blanking standpipe 11.
Claims (5)
1. a biomass boiler vapour-liquid self-circulation type cools off material-returning device, comprise fin panel casing feed bin (1), described fin panel casing feed bin (1) comprises along circumferentially erectting to be arranged and the heat pipe (6) of formation tube panel, by band steel (7) seamless link, the upper/lower terminal of described heat pipe (6) links to each other with lower inlet collection case (3) with top outlet collection case (2) respectively by connecting piping between the described heat pipe (6); The top of described fin panel casing feed bin (1) is provided with blanking standpipe (11), the sidewall of described fin panel casing feed bin (1) is provided with returning charge skewed slot (12), and the bottom of described fin panel casing feed bin (1) is set side by side with the fluidisation air compartment (5) corresponding with blanking standpipe (11) and the returning charge air compartment (4) corresponding with returning charge skewed slot (12); It is characterized in that: described top outlet collection case (2) links to each other with the input of boiler drum (10) by fairlead (8), described lower inlet collection case (3) links to each other with the output of boiler drum (10) by down-comer (9), thereby constitutes independently vapour-liquid self-circulation cooling loop of fin panel casing feed bin (1).
2. biomass boiler vapour-liquid self-circulation type according to claim 1 cools off material-returning device, it is characterized in that: the tube panel inboard that described heat pipe (6) forms is coated with the abrasion-proof and refractory coating, and described abrasion-proof and refractory coating is welded on the pin of this tube panel inboard and the high-strength abrasion-proof refractory material of coated pin is formed by intensive.
3. biomass boiler vapour-liquid self-circulation type cooling material-returning device according to claim 1 and 2 is characterized in that: also be provided with peephole on the sidewall of described fin panel casing feed bin (1).
4. biomass boiler vapour-liquid self-circulation type according to claim 1 and 2 cools off material-returning device, and it is characterized in that: the bottom of described fin panel casing feed bin (1) also is provided with valve control ash-removing hole.
5. biomass boiler vapour-liquid self-circulation type according to claim 3 cools off material-returning device, and it is characterized in that: the bottom of described fin panel casing feed bin (1) also is provided with valve control ash-removing hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320103355 CN203115999U (en) | 2013-03-07 | 2013-03-07 | Vapor-liquid self-circulation type cooling revert device of biomass boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320103355 CN203115999U (en) | 2013-03-07 | 2013-03-07 | Vapor-liquid self-circulation type cooling revert device of biomass boiler |
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| CN203115999U true CN203115999U (en) | 2013-08-07 |
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| CN 201320103355 Expired - Fee Related CN203115999U (en) | 2013-03-07 | 2013-03-07 | Vapor-liquid self-circulation type cooling revert device of biomass boiler |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107800030A (en) * | 2017-10-20 | 2018-03-13 | 鞍钢未来钢铁研究院有限公司 | A kind of solar energy induces laser aid and method |
| CN108613412A (en) * | 2017-02-05 | 2018-10-02 | 鞍钢股份有限公司 | Solar energy induced laser device and method |
| CN111425842A (en) * | 2020-04-07 | 2020-07-17 | 哈尔滨锅炉厂有限责任公司 | Flow balance tube structure for improving flow of tube panel in middle of heating surface |
| CN114135893A (en) * | 2021-10-25 | 2022-03-04 | 国家能源集团国源电力有限公司 | Material returning device and boiler |
-
2013
- 2013-03-07 CN CN 201320103355 patent/CN203115999U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108613412A (en) * | 2017-02-05 | 2018-10-02 | 鞍钢股份有限公司 | Solar energy induced laser device and method |
| CN107800030A (en) * | 2017-10-20 | 2018-03-13 | 鞍钢未来钢铁研究院有限公司 | A kind of solar energy induces laser aid and method |
| CN111425842A (en) * | 2020-04-07 | 2020-07-17 | 哈尔滨锅炉厂有限责任公司 | Flow balance tube structure for improving flow of tube panel in middle of heating surface |
| CN114135893A (en) * | 2021-10-25 | 2022-03-04 | 国家能源集团国源电力有限公司 | Material returning device and boiler |
| CN114135893B (en) * | 2021-10-25 | 2024-04-12 | 国家能源集团国源电力有限公司 | Material returning device and boiler |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130807 Termination date: 20210307 |