CN204345651U - Circulating fluid bed garbage furnace external heat exchanger - Google Patents
Circulating fluid bed garbage furnace external heat exchanger Download PDFInfo
- Publication number
- CN204345651U CN204345651U CN201420838277.7U CN201420838277U CN204345651U CN 204345651 U CN204345651 U CN 204345651U CN 201420838277 U CN201420838277 U CN 201420838277U CN 204345651 U CN204345651 U CN 204345651U
- Authority
- CN
- China
- Prior art keywords
- high temperature
- temperature superheater
- gray back
- heat exchanger
- burning
- 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
Links
Landscapes
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
Circulating fluid bed garbage furnace external heat exchanger.Composition of the present utility model comprises: the non-burning bubbling fluidized bed of one or several bin composition, non-burning bubbling fluidized bed is arranged in the high-temperature hot ash closed circuit of boiler separator dipleg bottom, non-burning bubbling fluidized bed bed body internal placement high temperature superheater coiled pipe (6), high temperature superheater coiled pipe respectively with high temperature superheater outlet header (4), high temperature superheater import header (5) connects, bed body is provided with two ash inlet tubes (1) and the gray back pipe (2) of strengthening cycling hot ash flow and heat transfer ability, all press air compartment (3) below high temperature superheater coiled pipe, air compartment port arrangements is all pressed to have the air distribution plate (8) of band small-bore fluidization hood, ash inlet tube is connected with cyclone dip-leg, gray back pipe with melt down thorax and be connected, gray back pipe is communicated with returning charge room (9), the upper end of returning charge room has gray back spout hole (7).The utility model is used for the external heat exchanger of incinerator.
Description
technical field:
the utility model relates to a kind of circulating fluid bed garbage furnace external heat exchanger.
background technology:
commercial CFBB the earliest in the world, the 50t/h CFBB of the German LURGI that nineteen eighty-two puts into operation just is equipped with external heat exchanger, and it became the part of the most characteristic and individual character of Shandong strange type CFBB afterwards.
but, the strange type CFBB in Shandong at initial stage because of complex structure, cost is high and lack the market competitiveness.With regard to external heat exchanger, it requires that material returning valve has ash quantity regulating power.Highly difficult material return system design adds the worry of user to its reliability.Further, because external heat exchanger is placed in outside stove, it is proposed new requirement to the design of boiler expansion and hermetically-sealed construction.
the middle and later periods 1980s, Ahlstrom Co. of Finland is a dark horse in recirculating fluidized bed field, and it, for initial stage Shandong strange type CFBB Problems existing, is proposed Py ~ flow type CFBB.Its feature eliminates external heat exchanger, and feed back ash all directly enters burner hearth, is furnished with radiant type heating surface in upper furnace.Pymflow type CFBB is simple with its structure, cost is low, dependable performance and open rapidly market, and becomes 20th century the mid-80s to the leading products in CFBB at beginning of the nineties market.
meanwhile, Germany pull out Bai Ge (Babcock) company be proposed to be separated with middle temperature and low range to circulate be Ci ~ ofluid type CFBB of principal character, it equally also eliminates external heat exchanger.
the low cost CFBB being representative with Pyroflow type (without external heat exchanger), has had certain advantage in the market of middle and small burn coal boiler.But in maximization process, the structural plane of this recirculating fluidized bed faces danger or disaster the difficulty overcome, these difficulties mainly: the difficulty of evaporating heating surface and overheated heating surface balanced arrangement; Bed temperature is difficult to control; Reheat steam temperature lacks regulating measure; Fuel tolerance scope is wideless.
utility model content:
the purpose of this utility model is to provide a kind of circulating fluid bed garbage furnace external heat exchanger.
above-mentioned object is realized by following technical scheme:
a kind of circulating fluid bed garbage furnace external heat exchanger, its composition comprises: the non-burning bubbling fluidized bed of one or several bin composition, described non-burning bubbling fluidized bed is arranged in the high-temperature hot ash closed circuit of boiler separator dipleg bottom, described non-burning bubbling fluidized bed bed body internal placement high temperature superheater coiled pipe, described high temperature superheater coiled pipe respectively with high temperature superheater outlet header, high temperature superheater import header connects, described bed body is provided with two ash inlet tubes and the gray back pipe of strengthening cycling hot ash flow and heat transfer ability, all press air compartment below described high temperature superheater coiled pipe, described air compartment port arrangements of all pressing has the air distribution plate of band small-bore fluidization hood, the described ash inlet tube of 2 DN350 heat-resistant antifriction cast is installed on the right side of described bed body top left, described gray back pipe is the gray back pipe of DN550 heat-resistant antifriction cast, described ash inlet tube is connected with cyclone dip-leg, described gray back pipe with melt down thorax and be connected, described gray back pipe is communicated with returning charge room, the upper end of described returning charge room has gray back spout hole.
beneficial effect:
the operation principle of this circulating fluid bed garbage furnace external heat exchanger is as described below:
external heat exchanger is the non-burning bubbling fluidized bed be made up of one or several bin, is to be arranged in the gas-solid heat exchange device in the high-temperature hot ash closed circuit of boiler separator dipleg bottom, and its internal placement has superheater, reheater or evaporating heating surface.The high-temperature hot ash that during boiler operatiopn, separator separates enters external heat exchanger by dipleg, heat exchange is carried out with the heating surface be arranged in external heat exchanger under fluidized state, Low Temperature Ash after heat exchange and fluidized wind enter burner hearth by spout hole (gray back mouth) and gray back pipe, repeat Matter Transfer and heat transfer process.
due in the tube bank of external heat exchanger inner only layout high temperature superheater, in order to strengthen the flow and heat transfer ability of cycling hot ash, have employed the structure of 2 ash inlet tubes and 1 gray back pipe.Be connected with cyclone dip-leg by 2 DN350 heat-resistant antifriction cast ash inlet tubes on the right side of external heat exchanger top left, on front side of external heat exchanger, air distribution plate centre bottom is connected with furnace wall cooling gray back mouth by 1 DN550 heat-resistant antifriction cast gray back pipe.The hot ash of high temperature circulation that about boiler, 2 cyclone separators separate all enters in external heat exchanger and carries out heat exchange, and then returns burner hearth by gray back pipe.The high pressure returning charge wind that roots blower is sent here is introduced into all pressures air compartment below external heat exchanger, then enters returning charge room by the little blast cap be arranged in above air distribution plate.Owing to adopting the fluidization hood of small-bore, therefore whole bed surface cloth wind is even, and fluidization quality is high.In addition, bed surface takes contracted section form near air distribution plate place, and namely air distribution plate place bed surface is long-pending is less than top heat transfer space cross-sectional area, and this design improves bottom loose fluidising air velocity, has good effect to a small amount of coarse grained fluidisation of whole material layer lower part.
accompanying drawing illustrates:
accompanying drawing 1 is structural representation of the present utility model.
accompanying drawing 2 is top views of accompanying drawing 1.
detailed description of the invention:
embodiment 1:
a kind of circulating fluid bed garbage furnace external heat exchanger, its composition comprises: the non-burning bubbling fluidized bed of one or several bin composition, described non-burning bubbling fluidized bed is arranged in the high-temperature hot ash closed circuit of boiler separator dipleg bottom, described non-burning bubbling fluidized bed bed body internal placement high temperature superheater coiled pipe 6, described high temperature superheater coiled pipe respectively with high temperature superheater outlet header 4, high temperature superheater import header 5 connects, described bed body is provided with two ash inlet tubes 1 and the gray back pipe 2 of strengthening cycling hot ash flow and heat transfer ability, all press air compartment 3 below described high temperature superheater coiled pipe, described air compartment port arrangements of all pressing has the air distribution plate 8 of band small-bore fluidization hood, the described ash inlet tube of 2 DN350 heat-resistant antifriction cast is installed on the right side of described bed body top left, described gray back pipe is the gray back pipe of DN550 heat-resistant antifriction cast, described ash inlet tube is connected with cyclone dip-leg, described gray back pipe with melt down thorax and be connected, described gray back pipe is communicated with returning charge room 9, the upper end of described returning charge room has gray back spout hole 7.
embodiment 2:
circulating fluid bed garbage furnace external heat exchanger according to embodiment 1, Superheater tube is furnished with in external heat exchanger, steam in incinerator back-end ductwork low temperature superheater by direct-contact desuperheater temperature reducing regulation after enter in external heat exchanger, in high temperature superheater tube bank, 5.5 MPa, the steam of 310 DEG C reach nominal steam parameter 5.3 MPa after carrying out heat exchange with cycling hot ash, 485 DEG C, then enter steam turbine acting by main steam line.Feed pipe (dipleg) common design of current non-mechanical material returning device and external heat exchanger is moving bed or low speed circulating fluidized bed, and in order to control external heat exchanger Fluidization wind rate more easily, its air distribution device is one and rises 29.4 kPa, 55 m
3
the roots blower of the frequency control of/min air quantity, its output pressure changes with the change of external heat exchanger circulating ash bed depth.
Claims (1)
1. a circulating fluid bed garbage furnace external heat exchanger, its composition comprises: the non-burning bubbling fluidized bed of one or several bin composition, it is characterized in that: described non-burning bubbling fluidized bed is arranged in the high-temperature hot ash closed circuit of boiler separator dipleg bottom, described non-burning bubbling fluidized bed bed body internal placement high temperature superheater coiled pipe, described high temperature superheater coiled pipe respectively with high temperature superheater outlet header, high temperature superheater import header connects, described bed body is provided with two ash inlet tubes and the gray back pipe of strengthening cycling hot ash flow and heat transfer ability, all press air compartment below described high temperature superheater coiled pipe, described air compartment port arrangements of all pressing has the air distribution plate of band small-bore fluidization hood, the described ash inlet tube of 2 DN350 heat-resistant antifriction cast is installed on the right side of described bed body top left, described gray back pipe is the gray back pipe of DN550 heat-resistant antifriction cast, described ash inlet tube is connected with cyclone dip-leg, described gray back pipe with melt down thorax and be connected, described gray back pipe is communicated with returning charge room, the upper end of described returning charge room has gray back spout hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420838277.7U CN204345651U (en) | 2014-12-26 | 2014-12-26 | Circulating fluid bed garbage furnace external heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420838277.7U CN204345651U (en) | 2014-12-26 | 2014-12-26 | Circulating fluid bed garbage furnace external heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204345651U true CN204345651U (en) | 2015-05-20 |
Family
ID=53228916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420838277.7U Expired - Fee Related CN204345651U (en) | 2014-12-26 | 2014-12-26 | Circulating fluid bed garbage furnace external heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204345651U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111426218A (en) * | 2020-04-13 | 2020-07-17 | 东方电气集团东方锅炉股份有限公司 | Supercritical carbon dioxide and solid particle heat exchanger |
-
2014
- 2014-12-26 CN CN201420838277.7U patent/CN204345651U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111426218A (en) * | 2020-04-13 | 2020-07-17 | 东方电气集团东方锅炉股份有限公司 | Supercritical carbon dioxide and solid particle heat exchanger |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103836612B (en) | A kind of Horizontal type circulating fluid bed superheated steam boiler | |
| CN107013906B (en) | A kind of CFB Slag waste-heat recovery device | |
| CN103591575B (en) | 350MW supercritical circulating fluidized bed boiler and steam/water circulating method | |
| CN205717146U (en) | A kind of ultrahigh pressure coal gas boiler | |
| CN106247304A (en) | The double reheat boiler shape that a kind of afterbody three flue is arranged | |
| CN107726305B (en) | A kind of boiler and working method of suitable full load SCR denitration | |
| CN106838889B (en) | A kind of circulating fluidized bed boiler of the interior circulation ash heat exchanger of band | |
| CN207514899U (en) | A kind of super-pressure reheat vapor cycle fluidized-bed combustion boiler of burning-used biologic mass fuel | |
| CN110388637A (en) | A kind of energy-saving type boiler ultra-low load steady combustion system | |
| CN105805735A (en) | Supercritical circulating fluidized bed boiler with tail extension heated surface and tail smoke channel | |
| CN107906498B (en) | Supercritical carbon dioxide circulating fluidized bed combustion coal boiler and its electricity generation system of driving | |
| CN204345651U (en) | Circulating fluid bed garbage furnace external heat exchanger | |
| CN206001429U (en) | A kind of double reheat π type boiler | |
| CN205897879U (en) | System is used multipurposely to heating furnace waste heat | |
| CN203656913U (en) | 350MW supercritical circulating fluidized bed boiler | |
| CN109945158A (en) | One kind liquidates tower 660MW double reheat boiler | |
| CN205679075U (en) | A kind of rotary hearth furnace flue gas waste heat recovery system | |
| CN201670735U (en) | Efficient heat-recovering decarburization roasting boiler with low calorific value | |
| CN209672301U (en) | One kind liquidates tower 660MW double reheat boiler | |
| CN107606609A (en) | A kind of CFBB of lower heat of combustion high-ash fuel | |
| CN207486791U (en) | A kind of circulating fluidized bed boiler of lower heat of combustion high-ash fuel | |
| CN208703897U (en) | Steam generator | |
| CN209113826U (en) | With the exhaust heat stepped gasification system utilized of coal gas | |
| CN207247161U (en) | A kind of double reheat П formula boilers using high-low-position flue gas recirculation temperature adjustment | |
| CN105588100B (en) | A kind of full film type wall fire tube boiler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150520 Termination date: 20151226 |
|
| EXPY | Termination of patent right or utility model |