CN204187591U - A kind of many radiation evaporation screen waste heat boilers - Google Patents
A kind of many radiation evaporation screen waste heat boilers Download PDFInfo
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- CN204187591U CN204187591U CN201420205114.5U CN201420205114U CN204187591U CN 204187591 U CN204187591 U CN 204187591U CN 201420205114 U CN201420205114 U CN 201420205114U CN 204187591 U CN204187591 U CN 204187591U
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- radiation
- waste heat
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- heat boiler
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The utility model discloses a kind of many radiation evaporation screen waste heat boilers, it comprises gas approach, flue gas flow equalizing room, water-cooled radiation heat transfer room, radiation evaporation screen, fin panel casing, convection heat-exchange chamber, evaporimeter, economizer, drum, ash exhauster etc., high-temperature flue gas enters flue gas flow equalizing room by the gas approach of waste heat boiler, flue gas is after current-sharing, enter water-cooled radiation heat transfer room, after evaporating shield heat exchange with fin panel casing and radiation, enter convection heat-exchange chamber again, after evaporimeter and economizer heat exchange, the temperature of flue gas is significantly reduced, then steam generator system is discharged, discharge after dedusting, waste heat boiler absorbs the heat of high-temperature flue gas, produces steam for production or generating.Waste heat boiler of the present utility model fully can reclaim the heat of the high temperature such as electric arc furnaces, converter, high ash-laden gas, and the flue-gas temperature reclaimed can be greater than 1600 DEG C, reclaims heat and can reach more than 70% of institute's smoke discharging heat; The stable equipment operation of this recovery system is reliable, maintenance and operating cost low.
Description
Technical field
The utility model relates to the waste heat boiler reclaiming high temperature, high ash-laden gas waste heat, specifically many radiation evaporation screen waste heat boilers can reclaim the fume afterheat of the high temperature such as electric arc furnaces, converter, high dust-laden efficiently, reduce exhaust gas temperature to greatest extent, the waste heat of high efficiente callback flue gas, ensure cleaner safe operation, reduce dedusting power consumption, the energy-conserving and environment-protective technical field belonged to.
Background technology
At present, in electric-arc furnace steelmaking, pneumatic steelmaking and closed electric smelting furnace production process, the temperature of the high temperature of discharging, high ash-laden gas is very high, and generally at 1300 DEG C ~ 1800 DEG C, the dustiness in flue gas reaches 30g/ rice
3, even higher, just can carry out dedusting after must first cooling.At present, following several method that cools usually is adopted: apparatus for vapour-cooling, be directly mixed into cold wind, water-cooled flue, misting cooling, heat pipe boiler and the cooling of ordinary steel tubular type waste heat boiler etc.All there is shortcomings in the above-mentioned type of cooling: 1, large, the high fume temperature of the resistance of apparatus for vapour-cooling, investment are high, and floor space is large; 2, be directly mixed into cold front heavy rain mode: the air quantity increase after its cooling is very large, the blower fan of smoke evacuation, motor, the initial cost of deduster and operating cost need be increased, and waste heat in flue gas.3, the water-cooled flue type of cooling: need a large amount of cooling waters during its cooling, cooling device and the water treatment facilities of cooling water need be configured, not only waste the heat in flue gas, and add power consumption and the reagent consumption of cooling water system.3, misting cooling: consume cooling water, increases the content of water in flue gas, not only makes dust-removal cloth-bag easily condense, and also easily causes cloth bag to be hydrolyzed and loses efficacy, and waste the heat in flue gas equally.4, the heat pipe waste heat boiler type of cooling: because heat pipe only can bear about 860 DEG C flue-gas temperatures, therefore which only can recovered flue gas be 850 DEG C with the heat of lower part; The heat pipe life-span of heat pipe waste heat boiler is shorter, and operating cost is higher; Heat pipe waste heat boiler volume is large, takes up an area large, invests high.5, smoke retaining screen waste heat boiler is with, the patent No. is 200820211388X, at radiation indoor location water cooling smoke retaining screen, this flue gas hanging panel forms by bending longitudinal arrangement cooling water pipe, this hanging panel is not suitable with the high-temperature flue gas of more than 1000 DEG C, when in the high-temperature flue gas being used in more than 1000, the water capacity in bend pipe is easily vaporized and is accumulated in the top of bend pipe, causes hot-spot to burn out; This baffle plate is in face of flue gas in addition, very easily wear damage in the flue gas of high dust-laden.Therefore this pattern boiler is unsuitable for this high dust-laden such as electric-arc furnace steelmaking, pneumatic steelmaking, super high temperature flue gas waste heat recovery.
Utility model content
Utility model object: in order to overcome the deficiencies in the prior art, provides a kind of many radiation evaporation screen waste heat boilers as high dust-laden, high-temperature flue gas waste heat recovery apparatus, can reclaim the heat energy in high dust-laden, super high temperature flue gas efficiently.
Technical scheme: many radiation evaporation screen waste heat boilers of the present utility model, if enter flue gas mouth, flue gas flow equalizing room, drum, water-cooled radiation heat transfer room, intermediate sedimentation room, convection heat-exchange chamber, exhaust smoke outlet; Described water-cooled radiation heat transfer room establishes multi-disc radiation to evaporate screen, fin panel casing, radiation chamber down-comer; Described convection heat-exchange chamber establishes evaporator bank, economizer; The described front end, flue gas flow equalizing room entering flue gas mouth connection waste heat boiler, rear end, flue gas flow equalizing room connects front end, water-cooled radiation heat transfer room, rear end, water-cooled radiation heat transfer room connects one end of waste heat boiler intermediate sedimentation room, the other end of intermediate sedimentation room connects convection heat-exchange chamber front end, and the rear end of convection heat-exchange chamber is connected with the exhaust smoke outlet of waste heat boiler.
The utility model many radiation evaporation screen waste heat boiler is a kind of U-shaped or П shape or L shape structure boiler; Described radiation chamber is vertical.
Every sheet radiation evaporation screen of the utility model radiation evaporation screen becomes screen formula by row's parallel steel tube each other by Plate Welding; It is indoor that described multi-disc radiation evaporation screen suspension is arranged on water-cooled radiation heat transfer, and vertical state established by the steel pipe in radiation evaporation screen; The upper end of described radiation evaporation screen is connected with drum by the water manifold that goes out of pipeline, radiation evaporation screen; The lower end of described radiation evaporation screen is connected with drum by the water-inlet header of pipeline, radiation evaporation screen.
Radiation described in the utility model evaporation screen, each other and and membrane wall between distance be greater than 20cm.
Ash exhauster is established in many radiation evaporation screen bottoms, waste heat boiler intermediate sedimentation room of the present utility model.
Evaporator bank described in the utility model establishes one-level light pipe evaporimeter and secondary finned-tube evaporator.
The light pipe mounting means of one-level light pipe evaporimeter described in the utility model is inclination shape or erects shape.
The finned tube mounting means of secondary finned-tube evaporator described in the utility model is inclination shape.
Many radiation evaporation screen waste heat boilers described in the utility model are two pressure waste heat boilers, and low pressure evaporator, low-pressure coal saver are established in heat convection indoor.
Many radiation evaporation screen exhaust-heat boiler flue gas flow processs of the present utility model are: 1300 ~ 2200 DEG C of high temperature, high ash-laden gas, enter flue gas mouth by flue and waste heat boiler and enter flue gas flow equalizing room, current-sharing room makes flue gas evenly enter water-cooled radiation heat transfer room, high-temperature flue gas is between shielding by radiation evaporation, between radiation evaporation screen and membrane wall, high-temperature flue gas and many radiation are evaporated and to be shielded and after fin panel casing heat exchange, flue-gas temperature will decline to a great extent, usual flue-gas temperature is down to 600 ~ 800 DEG C, the volume of flue gas significantly reduces, flue gas flow rate also significantly reduces, then boiler intermediate sedimentation room is entered, carry out dedusting, in flue gas, the ash fall of part larger particles is got off, flue gas then enters convection heat-exchange chamber, with evaporator bank in uphill process or bottom horizontal flow sheet process, economizer, low pressure evaporator, after low-pressure coal saver heat exchange, flue-gas temperature is down to less than 250 DEG C, discharged by boiler exhaust gas gas port, after sending deduster dedusting, qualified discharge, meet environmental requirement.
The utility model steam flow process is: after soft water supplementing water or steam turbine condensate water are heated by low-pressure coal saver, sends into oxygen-eliminating device deoxygenation, and the water after deoxygenation is delivered to after economizer heating through feed pump pressurization, then sends into drum; Water in drum absorbs flue gas heat, generation steam by many radiation evaporation screens, fin panel casing and evaporator bank, and the steam in drum outwards supplies steam by the outer of drum top for jet chimney, meets and produces and life use.
The utility model compared with prior art has the following advantages:
The utility model has fully reclaimed the heat of the high-temperature flue gas such as electric arc furnaces, converter, mineral hot furnace, there is the thermal efficiency high, waste heat recovery efficiency reaches more than 80%, be applicable to all flue-gas temperatures, and overcome a heat pipe waste heat boiler dust blocking difficult problem, not only system is simple, reliable, maintenance cost and operating cost low, and improve flue gas ash removal efficiency, reduce dust pelletizing system power consumption.
Accompanying drawing explanation
Fig. 1 is many radiation evaporation screen waste heat boiler schematic diagram (embodiment one) of the present utility model.
1, many radiation evaporation screen waste heat boiler 2, enter flue gas mouth 3, flue gas flow equalizing room 4, drum 41, low-pressure drum 5, water-cooled radiation heat transfer room 6, radiation evaporation screen 7, membrane wall 8, convection heat-exchange chamber 9, low-pressure coal saver 10, exhaust smoke outlet 11, low pressure evaporator 12, economizer 13, evaporator bank 14, ash exhauster 15, intermediate sedimentation room
Fig. 2 is many radiation evaporation screen waste heat boiler schematic diagram (embodiment two) of the present utility model.
1, many radiation evaporation screen waste heat boiler 2, enter flue gas mouth 3, flue gas flow equalizing room 4, drum 5, water-cooled radiation heat transfer room 6, radiation evaporation screen 7, membrane wall 8, convection heat-exchange chamber 9, low-pressure coal saver 10, exhaust smoke outlet 11, low pressure evaporator 12, economizer 132, light pipe evaporimeter 131, finned-tube evaporator 14, ash exhauster 15, intermediate sedimentation room
Fig. 3 is radiation evaporation screen structure chart.
6, radiation evaporation screen.
Fig. 4 is johning knot composition between steel plate and steel pipe.
61, junction steel plate between seamless steel pipe 62, steel pipe.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is further described.
Embodiment one:
As shown in Figure 1: the utility model many radiation shields formula waste heat boiler is U-shaped structure, what comprise many radiation evaporation screen waste heat boiler 1 enters flue gas mouth 2, flue gas flow equalizing room 3, drum 4, low-pressure drum 41, water-cooled radiation heat transfer room 5, intermediate sedimentation room 15, convection heat-exchange chamber 8, exhaust smoke outlet 10, 8 radiation evaporation screens 6 are installed in water-cooled radiation heat transfer room 5, the surrounding of water-cooled radiation chamber Heat Room installs fin panel casing 7, radiation outdoor mounted drum down-comer, fin panel casing water-inlet header, the water-inlet header of radiation evaporation screen, pipe laying is by drum down-comer and film water-cooled wall water-inlet header, fin panel casing is contacted mutually, pipe laying is by the water-inlet header of drum down-comer and radiation water-cooling screen, radiation water-cooling screen is contacted mutually, installation drum increase in pipeline and membrane wall go out water manifold, the delivery port of membrane wall and membrane wall are gone out water manifold by pipe laying, drum tedge is contacted mutually, install drum increase in pipeline and radiation evaporate shield go out water manifold, pipe laying by radiation evaporation screen delivery port and radiation evaporate shield go out water manifold, drum tedge is contacted mutually, install one group of light pipe evaporimeter 13, economizer 12 in convection heat-exchange chamber 8, the light pipe level inclination of light pipe evaporimeter is 30 degree, enter the top that flue gas mouth 2 is arranged on many radiation evaporation screen waste heat boiler 1, the bottom distance entering the centre-to-centre spacing current-sharing room of flue gas mouth 2 is 2 meters, flue gas flow equalizing room height is 1.5 meters, the height of water-cooled radiation heat transfer room is 15 meters, and the rectangle position height of intermediate sedimentation room is 1.5 meters, and the mid point distance of the mid point distance convection heat-exchange chamber of water-cooled radiation chamber is 8.5 meters, the height of convection heat-exchange chamber is 15 meters, length is 8 meters, and two groups of taper expansion chambers are installed in convection heat-exchange chamber bottom, and vertex of a cone angle is 60 degree, the exhaust smoke outlet of waste heat boiler is on the top of convection cell.
At radiation evaporation screen 6 seamless steel pipe No. 20 boiler steels by a row φ 60 × 4, screen formula is become to see Fig. 3 each other by Plate Welding.
Install in convection heat-exchange chamber 8 and connect light pipe evaporimeter 13, the tedge of drum 4 and the pipeline of drum 4 down-comer; The pipeline connecting economizer 12, drum 4 and feed pump is installed.
In convection heat-exchange chamber 8, low-pressure coal saver 9 is installed, low pressure evaporator 11, the pipeline connecting low-pressure coal saver, low-pressure drum 41, low pressure feed water pump is installed, the rising of installation connection low pressure evaporator 11, low-pressure drum 41 and decline pipeline.
In the boiler, ash exhauster 14 is installed in expansion chamber 15 bottom.
The flue gas flow of waste heat boiler of the present utility model is: high temperature, the flue gas of high dust-laden, flue gas mouth 2 is entered by waste heat boiler, enter the current-sharing room 3 of many radiation evaporation screen waste heat boiler 1, current-sharing room 9 makes flue gas evenly enter water-cooled radiation heat transfer room 5, after screen 6 and fin panel casing 7 heat exchange are evaporated in high-temperature flue gas and multi-disc radiation, flue-gas temperature declines to a great extent, usual flue-gas temperature is down to 600 ~ 800 DEG C, the volume of flue gas significantly reduces, flue gas flow rate also significantly reduces, then boiler intermediate sedimentation room 15 is entered, carry out sedimentation dedusting, after sedimentation dedusting, flue gas enters convection heat-exchange chamber 8, with evaporimeter 13 in uphill process, economizer 12, low pressure evaporator 11, after low-pressure coal saver 9 heat exchange, discharged by waste heat boiler exhaust smoke outlet 10, now the temperature of flue gas is less than 200 DEG C, after sending deduster dedusting, up to standard emptying, meet environmental requirement.
The utility model steam flow process is: low-lift pump will be sent into after low-pressure coal saver 9 heats after the pressurization of the water of soft water or demineralized water, the deoxygenation head sending into low-pressure drum carries out deoxygenation, water after deoxygenation is by flowing into low-pressure drum, and low pressure evaporator passes through its tedge and down-comer and low-pressure drum and forms carbonated drink natural cycle system; The water of low-pressure drum is delivered to after economizer 12 heats by pipeline and boiler feed pump pressurization, then sends into drum 4; Multi-disc radiation water-cooling screen 6, fin panel casing 7 and evaporimeter 13 passes through tedge and the down-comer formation carbonated drink natural cycle system of drum, multi-disc radiation water-cooling screen 6, fin panel casing 7 and evaporimeter 13 absorb flue gas heat, and produce steam at drum 4, steam in drum 4 gives user by the outer of drum top for jet chimney, meets and produces and life use.
Enforcement executes two:
As shown in Figure 2: the utility model many radiation shields formula waste heat boiler is U-shaped structure, what comprise many radiation evaporation screen waste heat boiler 1 enters flue gas mouth 2, flue gas flow equalizing room 3, drum 4, low-pressure drum 41, water-cooled radiation heat transfer room 5, intermediate sedimentation room 15, convection heat-exchange chamber 8, exhaust smoke outlet 10, 6 radiation evaporation screens 6 are installed in water-cooled radiation heat transfer room 5, the surrounding of water-cooled radiation chamber Heat Room installs fin panel casing 7, radiation outdoor mounted drum down-comer, fin panel casing water-inlet header, the water-inlet header of radiation evaporation screen, pipe laying is by drum down-comer and film water-cooled wall water-inlet header, fin panel casing is contacted mutually, pipe laying is by the water-inlet header of drum down-comer and radiation water-cooling screen, radiation water-cooling screen is contacted mutually, installation drum increase in pipeline and membrane wall go out water manifold, the delivery port of membrane wall and membrane wall are gone out water manifold by pipe laying, drum tedge is contacted mutually, install drum increase in pipeline and radiation evaporate shield go out water manifold, pipe laying by radiation evaporation screen delivery port and radiation evaporate shield go out water manifold, drum tedge is contacted mutually, install one group of finned-tube evaporator 131 and one group of light pipe evaporimeter 132, economizer 12 in convection heat-exchange chamber 8, the light pipe level inclination of light pipe evaporimeter is 30 degree, and the finned tube level inclination of finned-tube evaporator is 30 degree, enter the top that flue gas mouth 2 is arranged on many radiation evaporation screen waste heat boiler 1, the bottom distance entering the centre-to-centre spacing current-sharing room of flue gas mouth 2 is 2 meters, flue gas flow equalizing room height is 1.5 meters, the height of water-cooled radiation heat transfer room is 15 meters, and the rectangle position height of intermediate sedimentation room is 1.5 meters, and the mid point distance of the mid point distance convection heat-exchange chamber of water-cooled radiation chamber is 8.5 meters, the height of convection heat-exchange chamber is 15 meters, length is 8 meters, and two groups of taper expansion chambers are installed in convection heat-exchange chamber bottom, and vertex of a cone angle is 60 degree, the exhaust smoke outlet of waste heat boiler is on the top of convection cell.
At radiation evaporation screen 6 seamless steel pipe No. 20 boiler steels by a row Dg60, screen formula is become to see Fig. 3 each other by Plate Welding.
Install in convection heat-exchange chamber 8 and connect light pipe evaporimeter 132, the tedge of drum 4 and the pipeline of drum 4 down-comer; Install and connect evaporator fin 131, the tedge of drum 4 and the pipeline of drum 4 down-comer; The pipeline connecting economizer 12, drum 4 and feed pump is installed.
In convection heat-exchange chamber 8, low-pressure coal saver 9 is installed, low pressure evaporator 11, the pipeline connecting low-pressure coal saver, low-pressure drum 41, low pressure feed water pump is installed, the rising of installation connection low pressure evaporator 11, low-pressure drum 41 and decline pipeline.
In the boiler, expansion chamber 15 bottom is by dress ash exhauster 14.
The flue gas flow of waste heat boiler of the present utility model is: high temperature, the flue gas of high dust-laden, flue gas mouth 2 is entered by waste heat boiler, enter the current-sharing room 3 of many radiation evaporation screen waste heat boiler 1, current-sharing room 9 makes flue gas evenly enter water-cooled radiation heat transfer room 5, after high-temperature flue gas and multi-disc radiation are evaporated and are sent out screen 6 and fin panel casing 7 heat exchange, flue-gas temperature declines to a great extent, usual flue-gas temperature is down to 600 ~ 800 DEG C, the volume of flue gas significantly reduces, flue gas flow rate also significantly reduces, then boiler intermediate sedimentation room 15 is entered, carry out sedimentation dedusting, after sedimentation dedusting, flue gas enters convection heat-exchange chamber 8, with light pipe evaporimeter 132 in uphill process, finned-tube evaporator 131, economizer 12, low pressure evaporator 11, after low-pressure coal saver 9 heat exchange, discharged by waste heat boiler exhaust smoke outlet 10, now the temperature of flue gas is less than 180 DEG C, after sending deduster dedusting, up to standard emptying, meet environmental requirement.
The utility model steam flow process is: low-lift pump will be sent into after low-pressure coal saver 9 heats after the pressurization of the water of soft water or demineralized water, the deoxygenation head sending into low-pressure drum 41 carries out deoxygenation, water after deoxygenation is by flowing into low-pressure drum 41, and low pressure evaporator passes through its tedge and down-comer and low-pressure drum and forms carbonated drink natural cycle system; The water of low-pressure drum 41 is delivered to after economizer 12 heats by pipeline and boiler feed pump pressurization, then sends into drum 4; Multi-disc radiation water-cooling screen 6, fin panel casing 7, light pipe evaporimeter 132, finned tube steamer 131 pass through tedge and the down-comer formation carbonated drink natural cycle system of drum 4, multi-disc radiation water-cooling screen 6, fin panel casing 7, light pipe evaporimeter 132 and finned tube steamer 131 absorb flue gas heat, and produce steam at drum 4, steam in drum 4 gives user by the outer of drum top for jet chimney, meets and produces and life use.
The above is only preferably two kinds of embodiments of the present utility model; be noted that for those skilled in the art; under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (9)
1. the evaporation of radiation more than a screen waste heat boiler, is characterized in that: described many radiation evaporation screen waste heat boiler (1) are established into flue gas mouth (2), flue gas flow equalizing room (3), drum (4), water-cooled radiation heat transfer room (5), intermediate sedimentation room (15), convection heat-exchange chamber (8), exhaust smoke outlet (10); Described water-cooled radiation heat transfer room (5) establishes multi-disc radiation to evaporate screen (6), fin panel casing (7), radiation chamber down-comer; Described convection heat-exchange chamber (8) establishes evaporator bank (13), economizer (12); Described flue gas flow equalizing room (3) front end entering flue gas mouth (2) connection waste heat boiler (1), flue gas flow equalizing room (3) rear end connects water-cooled radiation heat transfer room (5) front end, water-cooled radiation heat transfer room (5) rear end connects one end of waste heat boiler intermediate sedimentation room (15), the other end of intermediate sedimentation room (15) connects convection heat-exchange chamber (8) front end, and the rear end of convection heat-exchange chamber (8) is connected with the exhaust smoke outlet (10) of waste heat boiler (1).
2. one according to claim 1 many radiation evaporation screen waste heat boiler, is characterized in that: described many radiation evaporation screen waste heat boiler (1) are a kind of U-shaped or П shape or L shape structure boiler; Described radiation chamber is vertical.
3. one according to claim 1 many radiation evaporations screen waste heat boiler, is characterized in that: described every sheet radiation evaporation screen (6) becomes screen formula by row's parallel steel tube each other by Plate Welding; Described multi-disc radiation evaporation screen (6) is hung and is arranged in water-cooled radiation heat transfer room (5), and vertical state established by the steel pipe in radiation evaporation screen (6); The upper end of described radiation evaporation screen (6) is connected with drum (4) by the water manifold that goes out of pipeline, radiation evaporation screen; The lower end of described radiation evaporation screen (6) is connected with drum (4) by the water-inlet header of pipeline, radiation evaporation screen.
4. one according to claim 1 many radiation evaporation screen waste heat boiler, is characterized in that: described radiation evaporation screen (6), each other and and membrane wall between distance be greater than 20cm.
5. one according to claim 1 many radiation evaporations screen waste heat boiler, ash exhauster (14) is established in described many radiation evaporation screen waste heat boiler (1) intermediate sedimentation room (15) bottoms.
6. one according to claim 1 many radiation evaporations screen waste heat boiler, is characterized in that: described evaporator bank (13) establishes one-level light pipe evaporimeter and secondary finned-tube evaporator.
7. one according to claim 6 many radiation evaporations screen waste heat boiler, is characterized in that: the light pipe mounting means of described one-level light pipe evaporimeter is inclination shape or erects shape.
8. one according to claim 6 many radiation evaporations screen waste heat boiler, is characterized in that: the finned tube mounting means of described secondary finned-tube evaporator is inclination shape.
9. one according to claim 1 many radiation evaporations screen waste heat boiler, it is characterized in that: described many radiation evaporation screen waste heat boiler (1) are two pressure waste heat boiler, establish low pressure evaporator (11), low-pressure coal saver (9) in convection heat-exchange chamber (8).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420205114.5U CN204187591U (en) | 2014-04-25 | 2014-04-25 | A kind of many radiation evaporation screen waste heat boilers |
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| CN201420205114.5U CN204187591U (en) | 2014-04-25 | 2014-04-25 | A kind of many radiation evaporation screen waste heat boilers |
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| CN204187591U true CN204187591U (en) | 2015-03-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103982884A (en) * | 2014-04-25 | 2014-08-13 | 孙慕文 | Multi-radiation evaporation screen afterheat boiler |
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2014
- 2014-04-25 CN CN201420205114.5U patent/CN204187591U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103982884A (en) * | 2014-04-25 | 2014-08-13 | 孙慕文 | Multi-radiation evaporation screen afterheat boiler |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150304 Termination date: 20200425 |
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