CN101639213A - Row tube type normal-pressure coal economizer - Google Patents
Row tube type normal-pressure coal economizer Download PDFInfo
- Publication number
- CN101639213A CN101639213A CN200910102308A CN200910102308A CN101639213A CN 101639213 A CN101639213 A CN 101639213A CN 200910102308 A CN200910102308 A CN 200910102308A CN 200910102308 A CN200910102308 A CN 200910102308A CN 101639213 A CN101639213 A CN 101639213A
- Authority
- CN
- China
- Prior art keywords
- flue gas
- tube
- box
- bobbin carriage
- economizer
- 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.)
- Pending
Links
Landscapes
- Air Supply (AREA)
Abstract
The invention relates to a row tube type normal-pressure coal economizer comprising a tube box, a flue gas inlet colleting box and a flue gas outlet collecting box, wherein the flue gas inlet colleting box and the flue gas outlet collecting box are connected with both ends of the tube box in screw joint, a flue gas interface is arranged on the flue gas inlet colleting box, a fan interface is arranged on the flue gas outlet collecting box, the lower part of the tube box is provided with a water outlet near the flue gas inlet colleting box, a water inlet is arranged near the flue gas outlet collecting box, a row tube is arranged in the tube box, one end of the row tube is connected with the flue gas interface, the other end of the row tube is connected with the fan interface, flue gas flowsin the row tube, and water flows in a space formed by an outer tube of the row tube and the tube box. The row tube type normal pressure coal economizer can effectively increase flue gas speed, increase a heating coefficient between the flue gas and a tube wall, obviously improve the heat exchange effect of a coal economizer, do not generate dust collecting phenomenon and become a maintenance-freecoal economizer.
Description
Technical field:
The present invention relates to a kind of residual heat from boiler fume and reclaim energy-saving equipment, particularly relate to a kind of normal pressure economizer that can reduce all kinds of exhaust gas temperatures.
Background technology:
Economizer is indispensable parts of modern boiler, and its effect is exactly the water inlet that utilizes the heat heating boiler of boiler tail flue gas, reduces heat loss due to exhaust gas.At present, widely used is cast iron (pipe) formula economizer and fin tube type economizer two big classes, and this two classes economizer is mainly the high and medium voltage boiler design.Because high pressure or medium-pressure boiler exhaust gas temperature be up to 350～450 ℃, with the mean temperature difference of water in the economizer at 250～300 ℃, heat conduction motive force is big, therefore existing economizer can effectively reclaim wherein most of heat energy.And the exhaust gas temperature of a large amount of low-pressure boilers that use has only 60～100 ℃ generally at 160～250 ℃ with the mean temperature difference of water in the economizer at present, and heat conduction motive force is little.Therefore, in order to reclaim waste heat wherein fully, must strengthen the heat exchange area of existing boiler standard configuration cast iron (pipe) formula economizer or fin tube type economizer, also will increase metal wastage, this has increased the waste heat recovery cost undoubtedly, and is also infeasible economically.Therefore, for the waste heat in the flue gas that reclaims the low-pressure boiler discharge, and the waste heat in the flue gas of temperature about 200 ℃ of miscellaneous equipment discharge, the necessary economizer that uses the more high heat transfer efficient of new structure.
As can be known in the economizer heat conductive process, thermal resistance mainly concentrates on flue gas and tube wall one side by heat transfer theory, and the principal element that influences heat transfer coefficient between flue gas and the tube wall is a gas speed.Existing economizer flue gas gas speed control improves the heavy wear that gas speed then will cause heat exchanger tube and fin again built in 7～12m/s, and therefore, the economizer of existing structure can't improve heat exchange efficiency again.In addition, existing economizer is extensive use of finned tube, though fin has improved heat exchange efficiency to a certain extent, but the existence of fin has also caused the generation of fouling phenomenon, the thermal conductivity factor of ash content is low, thermal resistance is big, therefore, dust stratification has seriously hindered the heat transfer between flue gas and heat exchanger tube and the fin, its heat exchange efficiency of the economizer of dust stratification even be lower than the situation of not using fin.Therefore, for the necessary deashing regularly of the heat exchange efficiency of keeping the finned tube economizer, this has increased maintenance cost undoubtedly and has reduced production efficiency.
Summary of the invention:
The objective of the invention is provides a kind of heat exchange efficiency height in order to overcome the existing defective of above-mentioned existing economizer, dust stratification not, non-maintaining normal pressure economizer.
Technology solution of the present invention is as follows:
A kind of row tube type normal-pressure coal economizer, comprise bobbin carriage, be screwed onto the gas approach collection case and the exhanst gas outlet collection case at bobbin carriage two ends, gas approach collection case is provided with the flue gas interface, exhanst gas outlet collection case is provided with fan interface, the bottom of bobbin carriage is provided with delivery port near gas inlet header case place, be provided with water inlet near exhanst gas outlet collection case, be mounted with an end in the bobbin carriage and connect the tubulation that the flue gas interface other end connects fan interface, flue gas circulates in the pipe of tubulation, circulates in the space that water constitutes with bobbin carriage outside the pipe of tubulation.
Described row tube type normal-pressure coal economizer, described tubulation are positioned in the bobbin carriage bottom to the scope of bobbin carriage top 4/5 height.
Described row tube type normal-pressure coal economizer, described tubulation are smooth wall pipe.
Described row tube type normal-pressure coal economizer, the top of described bobbin carriage is provided with steam outlet.
Beneficial effect of the present invention is:
1, a kind of row tube type normal-pressure coal economizer, comprise bobbin carriage, be welded on the gas approach collection case and the exhanst gas outlet collection case at bobbin carriage two ends, gas approach collection case is provided with the flue gas interface, exhanst gas outlet collection case is provided with fan interface, the bottom of bobbin carriage is provided with delivery port near gas approach Ji Xiangchu, be provided with water inlet near exhanst gas outlet collection case, be mounted with an end in the bobbin carriage and connect the flue gas interface, the other end connects the tubulation of fan interface, flue gas circulates in the pipe of tubulation, circulates in the space that water constitutes with bobbin carriage outside the pipe of tubulation.This structure can effectively improve flue gas gas speed, makes heat transfer coefficient raising between flue gas and the tube wall, obviously improves the heat exchange effect of economizer, does not produce fouling phenomenon, makes the present invention become non-maintaining economizer.And use finned tube approaching after adopting structure of the present invention with the heat-transfer effect that uses light pipe, and this also just there is no need to use and costs an arm and a leg, the finned tube that metal consumption is big, thus saved metal consumption and manufacturing cost.
2. because the top of bobbin carriage of the present invention is provided with steam outlet, can effectively utilize the work of byproduct steam and assurance safety of the present invention.
Description of drawings:
The present invention is described further below in conjunction with accompanying drawing:
Fig. 1 front view of the present invention;
Fig. 2 left view of the present invention;
Fig. 3 vertical view of the present invention.
The specific embodiment:
The following stated only is preferred embodiment of the present invention, does not therefore limit protection scope of the present invention.
See that accompanying drawing 1 is to shown in the accompanying drawing 3: a kind of row tube type normal-pressure coal economizer, comprise bobbin carriage 3, be welded on the gas approach collection case 1 and the exhanst gas outlet collection case 8 at bobbin carriage 3 two ends, be provided with flue gas interface 12 on the gas approach collection case 1, exhanst gas outlet collection case 8 is provided with fan interface 11, the bottom of bobbin carriage 3 is provided with delivery port 9 near gas approach collection case 1 place, be provided with water inlet 10 near exhanst gas outlet collection case 8, be mounted with an end in the bobbin carriage 3 and connect flue gas interface 12, the other end connects the tubulation 5 of fan interface 11, flue gas circulates in the pipe of tubulation 5, circulates in the space that water constitutes with bobbin carriage 3 outside the pipe of tubulation 5.
Tubulation 5 is positioned in bobbin carriage 3 bottoms to the scope of bobbin carriage 3 tops 4/5 height.
Tubulation 5 is a smooth wall pipe.
The top of bobbin carriage 3 is provided with steam outlet 4.
Operation principle: the flue gas of boiler is by the flue gas interface 12 on the gas approach collection case 1, enter the tubulation 5 that is provided with in the bobbin carriage 3, because water is filled with in the aquaporin the inside that the tubulation 5 pipe external spaces and bobbin carriage 3 inner spaces constitute, so flue gas carries out heat exchange with the interior water of bobbin carriage 3 when the tubulation 5, arrive the fan interface 11 on the exhanst gas outlet collection case 8 then, enter air-introduced machine
To smoke stack emission.The sidewall of bobbin carriage is provided with water level meter 7, comes output signal control magnetic valve according to the height of water level, reaches automatic water inlet, keeps the purpose of water level.Boiler feed water is all used the economizer water outlet, and promptly the delivery port 9 of economizer connects outside high-pressure hydraulic pump water inlet, and the high-pressure hydraulic pump delivery port connects the boiler feed water mouth, and water inlet 10 is connected with outside supply-water pump, and the signal that sends according to water level meter 7 supplies water.In order to reach maximum heat exchange effect, water inlet 10 is set at the end near exhanst gas outlet collection case 8, and delivery port 9 is set near gas approach collection case 1 one ends, makes current and flue gas be reflux type; At the top of bobbin carriage 3 thermometer boss 2 is set, thermometer can be laid in the inside, is used for manually monitoring water temperature; The steam outlet 4 that bobbin carriage 3 tops are provided with can effectively utilize byproduct steam and guarantee the trouble free service of economizer; Position of center line is provided with journal stirrup 6 in the both sides of bobbin carriage 3, is used for supporting and fixing economizer.
Claims (4)
1, a kind of row tube type normal-pressure coal economizer, comprise bobbin carriage (3), be screwed onto the gas approach collection case (1) and the exhanst gas outlet collection case (8) at bobbin carriage (3) two ends, it is characterized in that: gas approach collection case (1) is provided with flue gas interface (12), exhanst gas outlet collection case (8) is provided with fan interface (11), delivery port (9) is located to be provided with near gas approach collection case (1) in the bottom of bobbin carriage (3), be provided with water inlet (10) near exhanst gas outlet collection case (8), be mounted with an end in the bobbin carriage (3) and connect flue gas interface (12), the other end connects the tubulation (5) of fan interface (11).
2, row tube type normal-pressure coal economizer according to claim 1 is characterized in that: described tubulation (5) is positioned in bobbin carriage (3) bottom to the scope of bobbin carriage (3) top 4/5 height.
3, row tube type normal-pressure coal economizer according to claim 1 is characterized in that: described tubulation (5) is a smooth wall pipe.
4, row tube type normal-pressure coal economizer according to claim 1 is characterized in that: the top of described bobbin carriage (3) is provided with steam outlet (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910102308A CN101639213A (en) | 2009-09-03 | 2009-09-03 | Row tube type normal-pressure coal economizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910102308A CN101639213A (en) | 2009-09-03 | 2009-09-03 | Row tube type normal-pressure coal economizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101639213A true CN101639213A (en) | 2010-02-03 |
Family
ID=41614319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910102308A Pending CN101639213A (en) | 2009-09-03 | 2009-09-03 | Row tube type normal-pressure coal economizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101639213A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434875A (en) * | 2011-09-21 | 2012-05-02 | 苏州海陆重工股份有限公司 | Method for treating high-temperature smoke at opening of waste heat boiler of converter |
| CN102620579A (en) * | 2012-03-28 | 2012-08-01 | 常州蓝博节能设备有限公司 | Boiler flue gas waste heat recovery device |
| CN102635846A (en) * | 2012-04-24 | 2012-08-15 | 闫继超 | Gradual vapouration type high-energy-efficiency direct-flow steam injection boiler and method |
-
2009
- 2009-09-03 CN CN200910102308A patent/CN101639213A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434875A (en) * | 2011-09-21 | 2012-05-02 | 苏州海陆重工股份有限公司 | Method for treating high-temperature smoke at opening of waste heat boiler of converter |
| CN102620579A (en) * | 2012-03-28 | 2012-08-01 | 常州蓝博节能设备有限公司 | Boiler flue gas waste heat recovery device |
| CN102635846A (en) * | 2012-04-24 | 2012-08-15 | 闫继超 | Gradual vapouration type high-energy-efficiency direct-flow steam injection boiler and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201255417Y (en) | Flue condensation economizer | |
| CN207673513U (en) | A kind of residual heat of air compressor recycling machine | |
| CN102183009A (en) | Water supply system of condensing steam boiler | |
| CN101639213A (en) | Row tube type normal-pressure coal economizer | |
| CN201104133Y (en) | Aluminum electrolysis flue gas residual heat utilization device | |
| CN205388305U (en) | Novel low temperature second grade economizer | |
| CN200940826Y (en) | Horizontal heater for realizing low dispelling cold section end difference | |
| CN201289065Y (en) | Hot pipe type exhaust heat boiler | |
| CN201487934U (en) | Tabulation type normal-pressure economizer | |
| CN209165536U (en) | A kind of ground heating system based on air source heat pump | |
| CN103900410A (en) | Phase-change heat transfer device and heat transfer method thereof | |
| CN104359223B (en) | System and method using exhaust steam in steam turbine as steam air heater of utility boiler thermal medium | |
| CN202733874U (en) | Device utilizing waste heat of low-grade flue gas | |
| CN106439899B (en) | Air cooling unit turbine exhaust heat utilizes system | |
| CN103673689B (en) | Fume afterheat is utilized to carry out method and the device thereof of heat recovery | |
| CN202188627U (en) | Safe and energy-saving angle pipe hot-water boiler | |
| CN105823215A (en) | High-efficient two condensing gas module stoves | |
| CN110630995A (en) | Positive pressure horizontal water pipe waste heat boiler | |
| CN205537164U (en) | Flue gas waste heat recovery device for sintering machine | |
| CN221325141U (en) | Steam condensate waste heat recovery device | |
| CN220648301U (en) | Sectional type flue gas heat exchanger | |
| CN217356845U (en) | Energy-saving steam-water general boiler | |
| CN217155079U (en) | Integral finned tube type radial heat pipe and economizer | |
| CN204313486U (en) | System using exhaust steam in steam turbine as steam air heater of utility boiler thermal medium | |
| CN213984621U (en) | Heat-conducting oil aluminum melting furnace flue gas waste heat recovery device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20100203 |