CN102147107A - Boiler for biomass circulating fluidized bed - Google Patents
Boiler for biomass circulating fluidized bed Download PDFInfo
- Publication number
- CN102147107A CN102147107A CN 201110101887 CN201110101887A CN102147107A CN 102147107 A CN102147107 A CN 102147107A CN 201110101887 CN201110101887 CN 201110101887 CN 201110101887 A CN201110101887 A CN 201110101887A CN 102147107 A CN102147107 A CN 102147107A
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- China
- Prior art keywords
- gripper shoe
- tube
- pipe
- fluid bed
- circulating fluid
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Abstract
The invention discloses a boiler for a biomass circulating fluidized bed. An upper header at the upper end of a tube component of the boiler is communicated with a shell through a leading-out pipe; a lower header at the lower end of the tube component is communicated with the shell through a downcomer; supporting plates are respectively arranged at the left end and the right end of the tube component; and a space between the supporting plates which are opposite on the left and on the right is taken as a fume channel. The boiler can isolate a tube to the outside of the fume channel to avoid the situation that an elbow of the tube is not washed by particles in the fume to be abraded. After the tube shaped like a Chinese character `Zhi` is heated, the steam is converted from water steam and rises along the tube shaped like a Chinese character `Zhi` to effectively separate the steam from the water flow; and when the water steam and the water flow pass through the elbow, no air bubble is generated, and the steam and water resonance is also not caused. The heating area of the tube is maximized; and the distance among the tubes is increased to the greatest extent on the premise that the thermodynamic calculation heated area requirements are met so as to improve the problems of dust formation, bridging and the like and increase the heat absorption efficiency of the tube.
Description
Technical field
The invention belongs to field of boilers, specifically relate to a kind of biomass circulating fluid bed boiler that becomes steam after the water in the living beings flue gas heating boiler that utilizes.
Background technology
At present, existing CFBB, owing to itself belong to low-pressure equipment, generating set is not with in its inside, thereby does not have superheater.But,, often designed biomass circulating fluid bed boiler in order to increase heating surface area in order to save the energy.The biomass circulating fluid bed boiler of prior art, its inner heat-exchanging component mainly is made up of coiled pipe, and its elbow part directly contacts with the living beings flue gas.Owing to contain particle in the living beings flue gas, and elbow is the position of most fragile, and particle can wash away bend part, and the wearing and tearing elbow is scrapped coiled pipe in advance.On the one hand, the straight section of coiled pipe partly is horizontally disposed, causes steam to be trapped in the pipe and forms bubble, steam is built the pressure and causes in pipe and carbonated drink resonance influences security of operation.In addition, if adopt horizontal tube coil to arrange, cause occurring pipe dust stratification, bridging problem easily, make heating surface area little, with the passing of time can influence the heat absorption efficiency of the pipe that is heated, the steam of elbow flows obstructed in the pipe.
Summary of the invention
In order to solve the problem that prior art exists, the invention provides a kind of anti abrasive safe, heating surface area is big, heat absorption efficiency is high and can prevent the pipe dust stratification and the biomass circulating fluid bed boiler of bridging problem.
In order to realize above purpose, technical scheme of the present invention is as follows: a kind of biomass circulating fluid bed boiler, comprise shell and tube assembly, the upper collecting chamber of the upper end tool of tube assembly is communicated with by fairlead with shell, the next part case that the lower end of tube assembly has is communicated with by down-comer with shell, the two ends, the left and right sides of described tube assembly are provided with gripper shoe respectively, and the space about two between the relative gripper shoe is as exhaust gases passes.
Further, it is characterized in that described gripper shoe offers some through holes, pipe is placed through in the through hole.
Described gripper shoe is spliced by the polylith support chip, and the both sides of every support chip offer half round cut, and the half round cut of described adjacent two support chips is to being connected into through hole, and pipe is placed through in the through hole.
The serve as reasons angle of the unspecified angle of its elbow within 1 to 89 degree of described pipe forms curved structure in a zigzag.
Described gripper shoe is positioned at pipe bend section part or pipe straight section part.
Connect dividing plate between described adjacent elbow gripper shoe and/or the straight section gripper shoe.
Described gripper shoe is fixed in the bracket assembly.
The every outer tube surface at the top of described tube assembly is placed dust cover.
Compared with prior art, use gripper shoe,, on the one hand pipe is isolated in outside the exhaust gases passes, avoided the elbow of pipe not washed away by particle in the flue gas and be worn on the one hand as exhaust gases passes.
The tube assembly of recirculating fluidized bed inside is designed to " it " font, after being heated, pipe will water is vaporized into steam, steam is in " it " font pipe uphill process, effectively separate vapour and current, and water vapour and current can not produce bubble through the elbow section time, can in pipe, not cause carbonated drink resonance owing to building the pressure of steam yet, the smooth and easy upper collecting chamber that rises to of steam is introduced in the shell, and is safe and reliable to operation.
The tube assembly of " it " font, help increasing the heating surface area maximization of pipe, therefore under the prerequisite that satisfies the requirement of heating power calculating heating surface area, increase the spacing between each pipe as far as possible, can improve problems such as dust stratification, bridging, increase the heat absorption efficiency of pipe.
Description of drawings
Fig. 1 is the structural representation of biomass circulating fluid bed boiler of the present invention.
Fig. 2 be the A-A of Fig. 1 to partial sectional view, be used to show the structure of gripper shoe.
Below, with accompanying drawing the present invention further is described in detail in conjunction with specific embodiments.
The specific embodiment
As shown in Figure 1, the present invention is a kind of biomass circulating fluid bed boiler, and it is made up of shell 11, fairlead 9, down-comer 10, bracket assembly 7, tube assembly, gripper shoe 2, dividing plate 5, dust cover 3, upper collecting chamber 4 and next part case 6.Bracket assembly mounting pipe sub-component.Tube assembly is 7 stacks of " it " font pipe by some and forms.The angle of the elbow of pipe 1 to 89 the degree between, according to the practical operation situation at scene, the angle of the innermost layer pipe bend of tube assembly desirable 5 the degree, 10 the degree, 15 the degree, 20 the degree or 25 the degree etc.This elbow has the pipe of certain angle, makes common with it pipe (every pipe all is a level) contrast, and pipe has certain angle of inclination, helps flowing of steam and current, and the pipe of certain angle also helps the technology manufacturing.Tube assembly is fixing by gripper shoe 2, offers several through holes on the gripper shoe 2, and pipe is arranged in the through hole.In order to save material, gripper shoe 2 is spliced (as Fig. 2) after being welded by some support chips 8, and the both sides of support chip 8 offer half round cut, after the half round cut butt joint with per two support chips 8, just become a complete through hole.Compare the monoblock gripper shoe of global formation, after the support chip splicing of monolithic gripper shoe by fritter, the assembling of more convenient gripper shoe and pipe alleviates technology difficulty.The gripper shoe 2 of monoblock is arranged in the two ends of tube assembly, and the space between them has formed exhaust gases passes.If the monolithic gripper shoe is made of support chip 8, then gripper shoe also need connect common dividing plate, thereby the monolithic gripper shoe could be assembled into the gripper shoe formation exhaust gases passes of monoblock with dividing plate.The setting of gripper shoe except forming exhaust gases passes, is also played the effect that the particle in the flue gas washes away of avoiding of protection pipe bend.The pipe outlet of tube assembly upper end flocks together and is communicated with upper collecting chamber, and the pipe import of tube assembly lower end flocks together and is communicated with the next part case.The outermost layer pipe of the top end of tube assembly owing to be vulnerable to washing away of particle, needs to cover one deck dust cover 3 at the outer surface of pipe.The upper collecting chamber 4 of the upper end of tube assembly is communicated with by fairlead 9 with shell 11, and the next part case 6 of the lower end of tube assembly is communicated with by down-comer 10 with shell 11,
Operation principle of the present invention is as follows: the water in the CFBB distributes the bottom that enters tube assembly along down-comer from the next part case under the effect of pressure, simultaneously, the input high-temperature flue gas flows from top to bottom from the outside of pipe, water in flue gas and the pipe carries out heat exchange, make water heating back produce high-temperature steam, steam is collected to upper collecting chamber along tortuous rising of " it " font, enters by fairlead and adopts water separator that water vapour is isolated available steam in the CFBB.Steam water interface is through after separating, and steam enters the female pipe of steam from steam (vapor) outlet and delivers to the user.Water level control is by the control of the water level control system on the shell, and steam pressure also is that the running status of evaporimeter is consistent with shell by the control of the control pressurer system on the shell.
Claims (9)
1. biomass circulating fluid bed boiler, comprise shell and tube assembly, the upper collecting chamber of the upper end tool of tube assembly is communicated with by fairlead with shell, the next part case that the lower end of tube assembly has is communicated with by down-comer with shell, it is characterized in that: the two ends, the left and right sides of described tube assembly are provided with gripper shoe respectively, and the space about two between the relative gripper shoe is as exhaust gases passes.
2. biomass circulating fluid bed boiler according to claim 1 is characterized in that described gripper shoe offers some through holes, and pipe is placed through in the through hole.
3. biomass circulating fluid bed boiler according to claim 1, it is characterized in that described gripper shoe is spliced by the polylith support chip, the both sides of every support chip offer half round cut, the half round cut of described adjacent two support chips is to being connected into through hole, and pipe is placed through in the through hole.
4. according to claim 2 or 3 described biomass circulating fluid bed boilers, it is characterized in that the serve as reasons angle of the unspecified angle of its elbow within 1 to 89 degree of described pipe forms curved structure in a zigzag.
5. biomass circulating fluid bed boiler according to claim 4 is characterized in that described gripper shoe is positioned at pipe bend section part.
6. biomass circulating fluid bed boiler according to claim 4 is characterized in that described gripper shoe is positioned at pipe straight section part.
7. biomass circulating fluid bed boiler according to claim 1 is characterized in that, connects dividing plate between described adjacent elbow gripper shoe and/or the straight section gripper shoe.
8. biomass circulating fluid bed boiler according to claim 1 is characterized in that described gripper shoe is fixed in the bracket assembly.
9. biomass circulating fluid bed boiler according to claim 1 is characterized in that, the every outer tube surface at the top of described tube assembly is placed dust cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110101887 CN102147107A (en) | 2011-04-22 | 2011-04-22 | Boiler for biomass circulating fluidized bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110101887 CN102147107A (en) | 2011-04-22 | 2011-04-22 | Boiler for biomass circulating fluidized bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102147107A true CN102147107A (en) | 2011-08-10 |
Family
ID=44421500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110101887 Pending CN102147107A (en) | 2011-04-22 | 2011-04-22 | Boiler for biomass circulating fluidized bed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102147107A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2152149Y (en) * | 1992-10-19 | 1994-01-05 | 李宝瑞 | Matrix fin type steel pipe coal economizer |
| CN2361971Y (en) * | 1998-08-31 | 2000-02-02 | 都江电力设备厂 | Coal economizer with helical ribbed tube |
| CN2644899Y (en) * | 2003-06-20 | 2004-09-29 | 沈国华 | Condensing type coal economizer |
| CN2687510Y (en) * | 2004-04-06 | 2005-03-23 | 无锡华光锅炉股份有限公司 | Inclined covection-current pipe bundle with recirculating downtake |
| CN200952697Y (en) * | 2006-08-31 | 2007-09-26 | 国电科技环保集团山东龙源环保有限公司 | Stalks circulating fluidized bed burning boiler alkali metal corrosion block resisting convection pipe bundle |
| CN201093473Y (en) * | 2007-03-07 | 2008-07-30 | 郑长庆 | Throttle wear prevention cavity |
| CN201121881Y (en) * | 2007-09-28 | 2008-09-24 | 中国铝业股份有限公司 | Fin type coal economizer elbow abrasion-proof structure |
| CN201628245U (en) * | 2010-03-29 | 2010-11-10 | 中江能源回收(上海)有限公司 | Steam air heater |
| CN202074512U (en) * | 2011-04-22 | 2011-12-14 | 广州迪森热能技术股份有限公司 | Biomass circulating fluidized bed boiler |
-
2011
- 2011-04-22 CN CN 201110101887 patent/CN102147107A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2152149Y (en) * | 1992-10-19 | 1994-01-05 | 李宝瑞 | Matrix fin type steel pipe coal economizer |
| CN2361971Y (en) * | 1998-08-31 | 2000-02-02 | 都江电力设备厂 | Coal economizer with helical ribbed tube |
| CN2644899Y (en) * | 2003-06-20 | 2004-09-29 | 沈国华 | Condensing type coal economizer |
| CN2687510Y (en) * | 2004-04-06 | 2005-03-23 | 无锡华光锅炉股份有限公司 | Inclined covection-current pipe bundle with recirculating downtake |
| CN200952697Y (en) * | 2006-08-31 | 2007-09-26 | 国电科技环保集团山东龙源环保有限公司 | Stalks circulating fluidized bed burning boiler alkali metal corrosion block resisting convection pipe bundle |
| CN201093473Y (en) * | 2007-03-07 | 2008-07-30 | 郑长庆 | Throttle wear prevention cavity |
| CN201121881Y (en) * | 2007-09-28 | 2008-09-24 | 中国铝业股份有限公司 | Fin type coal economizer elbow abrasion-proof structure |
| CN201628245U (en) * | 2010-03-29 | 2010-11-10 | 中江能源回收(上海)有限公司 | Steam air heater |
| CN202074512U (en) * | 2011-04-22 | 2011-12-14 | 广州迪森热能技术股份有限公司 | Biomass circulating fluidized bed boiler |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110810 |