CN202915736U - Special energy-saving and dedusting equipment for power generation by utilizing high dust smoke waste heat of submerged arc furnace - Google Patents
Special energy-saving and dedusting equipment for power generation by utilizing high dust smoke waste heat of submerged arc furnace Download PDFInfo
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- CN202915736U CN202915736U CN2012207104648U CN201220710464U CN202915736U CN 202915736 U CN202915736 U CN 202915736U CN 2012207104648 U CN2012207104648 U CN 2012207104648U CN 201220710464 U CN201220710464 U CN 201220710464U CN 202915736 U CN202915736 U CN 202915736U
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- 239000000428 dust Substances 0.000 title claims abstract description 34
- 239000002918 waste heat Substances 0.000 title abstract description 10
- 239000000779 smoke Substances 0.000 title abstract description 4
- 238000010248 power generation Methods 0.000 title abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000002131 composite material Substances 0.000 claims abstract description 5
- 239000012530 fluid Substances 0.000 claims description 25
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 25
- 239000011707 mineral Substances 0.000 claims description 25
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 claims description 18
- 238000009835 boiling Methods 0.000 claims description 17
- 238000002485 combustion reaction Methods 0.000 claims description 10
- 239000000498 cooling water Substances 0.000 claims description 10
- 229940059936 lithium bromide Drugs 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 4
- 229910052721 tungsten Inorganic materials 0.000 claims description 4
- 239000010937 tungsten Substances 0.000 claims description 4
- 239000007791 liquid phase Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 239000004744 fabric Substances 0.000 abstract description 5
- MEOSMFUUJVIIKB-UHFFFAOYSA-N [W].[C] Chemical compound [W].[C] MEOSMFUUJVIIKB-UHFFFAOYSA-N 0.000 abstract description 3
- 230000005611 electricity Effects 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 abstract description 2
- 230000009183 running Effects 0.000 abstract description 2
- 238000005338 heat storage Methods 0.000 abstract 4
- 230000001351 cycling effect Effects 0.000 abstract 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 29
- 239000003546 flue gas Substances 0.000 description 29
- 239000007789 gas Substances 0.000 description 13
- 238000001816 cooling Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 238000007599 discharging Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000007664 blowing Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000011555 saturated liquid Substances 0.000 description 3
- 238000000746 purification Methods 0.000 description 2
- 239000004071 soot Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000013517 stratification Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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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
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Abstract
The utility model relates to special energy-saving and dedusting equipment for power generation by utilizing high dust smoke waste heat of a submerged arc furnace. The equipment comprises a settling chamber, a high-temperature heat pipe evaporator, a cloth bag dust collector, a medium and low temperature flow-equalizing heat storage chamber, a main fan and an exhaust funnel, and is characterized in that the settling chamber is connected with the high-temperature heat pipe evaporator, the cloth bag dust collector, the medium and low temperature flow-equalizing heat storage chamber, the main fan and the exhaust funnel in sequence by a pipe; the heat pipe evaporator is connected with a steam drum which is connected with a steam heat storage chamber; a carbon-tungsten composite material filter core is arranged in the cloth bag dust collector; a heat exchanger is arranged in the medium and low temperature flow-equalizing heat storage chamber; a hot water outlet of the heat exchanger is connected with an evaporator which is connected with a working medium pump; an outlet end is connected with the steam drum which is connected with a turbine; and the turbine is connected with a condenser which is connected with a liquid storage tank. The special equipment is characterized in that R141B is adopted as a cycling organic working medium. According to the special equipment, heat energy in the smoke can be furthest recycled and converted into high-grade electricity, good environment friendliness effect can also be achieved, and the device is low in investment and low in running energy consumption.
Description
Affiliated technical field
The utility model relates to a kind of residual heat using device, and particularly the high ash-laden gas cogeneration of mineral hot furnace energy-saving dust removal special device belongs to flue gas ash removal and UTILIZATION OF VESIDUAL HEAT IN technical field.
Background technology
The mineral heating furnace flue temperature is very high, and generally about 700 ℃, dust concentration reaches 15g/Nm to the temperature that enters pipeline after capturing
3, accounting for more than 90% of dust total amount less than the ash of 5um, Dust Capacity is large, and sticking and thin.The method of dedusting after the at present usually first heat exchange cooling of employing (the heat exchange cooling method has: mechanical cooler heat exchange, spraying cooling heat transferring etc.).There is shortcomings in said method:
1, dedusting after the mechanical cooler heat exchange: cooling-down effect is poor, and input gas temperature should not be greater than 450 ℃, and cooling is limited in scope, and machine cooler tube wall is stifled ash easily, causes the burning cloth bag, and system can't normally move.
2, dedusting behind the spraying cooling heat transferring: increase the content of water in the flue gas, cloth bag is hardened, also easily cause water and dust bonding, cause system equipment to stop up.
Because above shortcoming, adopt many ash-blowing methods in the engineering: such as shock-wave ash blowing, steam soot blowing, ball deashing etc. falls, but owing to dust carefully glues, and Dust Capacity is large, 1 ton of steel of every production will produce the 35kg dust, these purge modes produce little effect, and can't fundamentally solve dust stratification, blockage problem.
Summary of the invention
The utility model is for problems of the prior art, the high ash-laden gas cogeneration of a kind of mineral hot furnace energy-saving dust removal special device is provided, this special equipment to greatest extent heat energy in the recovered flue gas is converted into the high-grade electric energy, drag dedusting fan, while can be reduced the exhaust temperature of flue gas, reaches good environment protecting, and does not affect the stable and continuous of mineral hot furnace production, can also obtain good dust removing effects, the dust concentration 10mg/Nm of discharging
3
The technical scheme that the utility model adopts is as follows: the high ash-laden gas cogeneration of mineral hot furnace energy-saving dust removal special device, comprise combustion settling chamber, the high-temperature heat pipe evaporimeter, sack cleaner, middle low temperature current-sharing regenerator, main air blower, aiutage, it is characterized in that: described combustion settling chamber is by the pipeline high-temperature heat pipe evaporimeter that is linked in sequence, sack cleaner, middle low temperature current-sharing regenerator, main air blower, aiutage, described high-temperature heat pipe evaporimeter connects the steam drum by pipeline, the steam drum connects steam accumulator by pipeline, be provided with carbon composite tungsten material filter core in the described sack cleaner, in the described middle low temperature current-sharing regenerator primary surface heat exchanger is installed, the cooling water inlet of primary surface heat exchanger is connected with the heat exchanger feed pump, the hot water outlet of primary surface heat exchanger is taken over the hot water inlet of shell-type evaporimeter, the cooling water outlet of shell-and-tube evaporator connects circulating water pool, circulating water pool is connected with the heat exchanger feed pump, consist of a loop, the working medium entrance point of shell-and-tube evaporator is connected with the high-pressure outlet end of working medium circulating pump, the sender property outlet termination working medium drum of shell-and-tube evaporator, the working medium drum is connected with the upper flange interface of low boiling working fluid steam turbine, the bottom interface of low boiling working fluid steam turbine is connected with the air inlet of shell-and-tube cooler by pipeline, the liquid-phase outlet of shell-and-tube cooler is connected with fluid reservoir by pipeline, fluid reservoir is connected with the low pressure inlet end of working medium circulating pump, the low boiling working fluid steam turbine is connected with threephase generator, an end flange interface of shell-and-tube cooler is connected with water pump, another end of shell-and-tube cooler connects lithium-bromide absorption-type refrigerating machine, lithium-bromide absorption-type refrigerating machine is connected with water pump, consists of another loop.
It is further characterized in that: adopting R141B is the circulation organic working medium.
Because the mineral heating furnace flue temperature fluctuation is violent, the flue-gas temperature peak value is high, after flue gas is through high-temperature heat pipe evaporimeter of the present utility model heat exchange, the flue-gas temperature fluctuating range can greatly reduce, also reduced simultaneously the peak value of flue-gas temperature, flue gas becomes middle low-temperature flue gas by high temperature, enter middle low temperature current-sharing regenerator, through the primary surface heat exchanger heat exchange, reclaim again the waste heat of low-temperature flue gas in the mineral hot furnace by low boiling working fluid organic Rankine circulation cogeneration, realize the exhaust heat stepped utilization of mineral heating furnace flue.
Because after the utility model waste heat power generation equipment was placed on sack cleaner, the thermal source dust content was low, therefore can the design of the heat exchange core cell spacing of fin in the middle low temperature current-sharing regenerator is very little; And need not unload ash, deashing, defeated grey facility; Volume reduces, and maintenance reduces simultaneously, has also prolonged the service life of primary surface heat exchanger, and dust emission concentration is lower.
Compared with prior art, the utlity model has following advantage, economic effect:
1. adopt the high-temperature heat pipe evaporimeter to reclaim the waste heat of mineral hot furnace high-temperature flue gas, the waste heat that low-temperature flue gas in the mineral hot furnace is reclaimed in low boiling working fluid organic Rankine circulation cogeneration, realize the exhaust heat stepped utilization of mineral heating furnace flue;
2. by the lithium-bromide absorption-type refrigerating machine cooling, the temperature of cooling water is down to 10～15 ℃, satisfies working substance steam and is condensed into saturated liquid to the requirement of cooling water;
3. primary surface heat exchanger dust stratification does not stop up, and heat exchange efficiency improves 8～9 times;
4. save the soot blower system of primary surface heat exchanger, thereby reduced cost and operating cost;
5. adopt carbon composite tungsten material filter-element dust collector, concentration of emission 10mg/Nm
3
6. applied range, mineral hot furnace dedusting cogeneration all can be adopted.
Description of drawings
Fig. 1 is apparatus structure schematic diagram of the present utility model.
Among the figure: 1. mineral hot furnace, 2. water-cooled flue, 3. combustion settling chamber, 4. high-temperature heat pipe evaporimeter, 5. sack cleaner, 6. in low temperature current-sharing regenerator, 7. main air blower, 8. aiutage, 9. steam drum, 10. steam accumulator, 11. primary surface heat exchanger, 12. the heat exchanger feed pump, 13. circulating water pools, 14. shell-and-tube evaporators, 15. working medium circulating pump, 16. the working medium drum, 17. fluid reservoirs, 18. low boiling working fluid steam turbines, 19. threephase generator, 20. water pump, 21. shell-and-tube coolers, 22. lithium-bromide absorption-type refrigerating machines.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
The high ash-laden gas cogeneration of mineral hot furnace energy-saving dust removal special device in the utility model, comprise combustion settling chamber 3, high-temperature heat pipe evaporimeter 4, sack cleaner 5, middle low temperature current-sharing regenerator 6, main air blower 7, aiutage 8, it is characterized in that: described combustion settling chamber 3 is by the pipeline high-temperature heat pipe evaporimeter 4 that is linked in sequence, sack cleaner 5, middle low temperature current-sharing regenerator 6, main air blower 7, aiutage 8, described high-temperature heat pipe evaporimeter 4 connects steam drum 9 by pipeline, steam drum 9 connects steam accumulator 10 by pipeline, be provided with carbon composite tungsten material filter core in the described sack cleaner 5, in the described middle low temperature current-sharing regenerator 6 primary surface heat exchanger 11 is installed, the cooling water inlet of primary surface heat exchanger 11 is connected with heat exchanger feed pump 12, the hot water outlet of primary surface heat exchanger 11 is taken over the hot water inlet of shell-type evaporimeter 14, the cooling water outlet of shell-and-tube evaporator 14 connects circulating water pool 13, circulating water pool 13 is connected with heat exchanger feed pump 12, consist of a loop, the working medium entrance point of shell-and-tube evaporator 14 is connected with the high-pressure outlet end of working medium circulating pump 15, the sender property outlet termination working medium drum 16 of shell-and-tube evaporator 14, working medium drum 16 is connected with the upper flange interface of low boiling working fluid steam turbine 18, the bottom interface of low boiling working fluid steam turbine 18 is connected by the air inlet of pipeline with shell-and-tube cooler 21, the liquid-phase outlet of shell-and-tube cooler 21 is connected 17 by pipeline with fluid reservoir, fluid reservoir 17 is connected with the low pressure inlet end of working medium circulating pump 15, low boiling working fluid steam turbine 18 is connected with threephase generator 19, an end flange interface of shell-and-tube cooler 21 is connected with water pump 20, another end of shell-and-tube cooler 21 connects lithium-bromide absorption-type refrigerating machine 22, lithium-bromide absorption-type refrigerating machine 22 is connected with water pump 20, consists of another loop.
Described low boiling working fluid is R141B, the power pressure that enters the low boiling working fluid steam turbine is 1.95MPa, and when the power pressure after the acting of expanding was 0.25MPa, system's electromotive power output was 1000KW, Rankine cycle efficient is 22.5%, and the flue-gas temperature that system discharges is 80 ℃.
Adopt device for generating power by waste heat after the first dedusting, namely first high ash-laden gas being entered carbon tungsten filter-element dust collector purifies, carbon tungsten filter core in the deduster, generally can bear the long-term work temperature about 350 ℃, high energy bears 400 ℃ high temperature, and can bear oarse-grained washing away, therefore can the direct purification flue gas, and do not need to do any preliminary treatment.Dust concentration after the purification is down to 10mg/Nm
3Become clean flue gas, do not need to process the problem such as obstruction, deashing of dust.
The course of work of the present utility model: 30000KVA mineral hot furnace 1 exhaust smoke level 24 * 10
4/ Nm
3/ h, 700 ℃ of temperature, dust content 15g/Nm
3By discharging in the stove, sneak into cold wind through water-cooled flue 2, enter combustion settling chamber 3 behind the burning CO gas; The effect of combustion settling chamber 3 is: reduce flue gas flow rate, make the big dust particle sedimentation of carrying in the flue gas, and suitably sneak into cold wind, finally burn CO gas, enter high-temperature heat pipe evaporimeter 4 by combustion settling chamber 3 flue gas out, generation steam enters steam drum 9 water in the steam drum 9 absorbs the high-temperature flue gas waste heat in high-temperature heat pipe evaporimeter 4 after, steam in the steam drum 9 enters steam accumulator 10 by pipeline, after regulating outer for stable, continuously, the parameter steam that meets customer requirements is used for generating electricity.After 4 heat exchange of high-temperature heat pipe evaporimeter, the flue-gas temperature fluctuating range can greatly reduce, and has also reduced the peak value of flue-gas temperature simultaneously, and flue gas becomes middle low-temperature flue gas by high temperature, enters sack cleaner 5 again, dust concentration 10mg/Nm after dedusting
3, then entering in the middle low temperature current-sharing regenerator 6, flue gas is emitted heat, and temperature is down to 80 ℃, is pressed into aiutage 8 by main air blower 7 and enters atmosphere.Simultaneously, recirculated water drives by heat exchanger feed pump 12, enter the heat that absorbs flue gas in the primary surface heat exchanger 11 that is installed in the middle low temperature current-sharing regenerator 6, form steam water interface, steam water interface is tried hard to recommend in Natural Circulation and is entered in the shell-and-tube evaporator 14 under moving, emits heat, becomes water at low temperature, water at low temperature flows into circulating water pool 13, the circulation of a beginning new round.The low boiling organic working medium drives by working medium circulating pump 15, in shell-and-tube evaporator 14, absorb the heat of steam water interface, become saturated vapor, enter working medium drum 16, but supersaturation moisture content and impurity in the working medium drum 16 filtering sources of the gas are guaranteed steam turbine 18 even runnings.Working substance steam in the 18 interior expansion actings of low boiling working fluid steam turbine, and drives threephase generator 19 generatings by behind the pressure regulator valve.The electric energy that system sends is three-phase alternating current, and rated voltage is 380V, can incorporate electrical network in the factory into through after the pressure regulation, or directly gives consumer and use.The working substance steam of discharging from low boiling working fluid steam turbine 18 is condensed into saturated liquid by shell-and-tube cooler 21, enter fluid reservoir 17, fluid reservoir 17 can be guaranteed working medium circulating pump 15 continuous pressures, and working medium circulating pump 15 is sent in the shell-and-tube evaporator 14 after worker quality liquid is pressurizeed, the circulation of a beginning new round.From shell-and-tube cooler 21 recirculated water out, by lithium-bromide absorption-type refrigerating machine 22 coolings, the temperature of cooling water is down to 10～15 ℃, satisfies working substance steam and is condensed into saturated liquid to the requirement of cooling water, send in the shell-and-tube cooler 21 circulation of a beginning new round through water pump 20.
The maximum characteristics of this equipment are at first to adopt the high-temperature heat pipe evaporimeter to reclaim the waste heat for generating steam generating of mineral hot furnace high-temperature flue gas, adopt organic Rankine circulation cogeneration after the first dedusting to reclaim the waste heat of low-temperature flue gas in the mineral hot furnace again, realize the exhaust heat stepped utilization of the high ash-laden gas of mineral hot furnace.Take 30000KVA mineral hot furnace UTILIZATION OF VESIDUAL HEAT IN and dust collecting process as example, the utility model device and conventional equipment relatively are described as follows:
Annotate: work per year and calculated in 330th.
This shows, the utility model can be realized the exhaust heat stepped utilization of the high ash-laden gas of mineral hot furnace, the heat energy that reclaims to greatest extent in the high ash-laden gas of mineral hot furnace is converted into the high-grade electric energy, primary surface heat exchanger need not unload ash, deashing, defeated grey facility, prolong the service life of equipment, can reduce the exhaust temperature of flue gas simultaneously, and do not affected the stable and continuous of mineral hot furnace production, the environment protecting that can also obtain, the dust concentration 10mg/Nm of discharging
3, plant investment is low, operation energy consumption is low.
Claims (2)
1. the high ash-laden gas cogeneration of mineral hot furnace energy-saving dust removal special device, comprise combustion settling chamber, the high-temperature heat pipe evaporimeter, sack cleaner, middle low temperature current-sharing regenerator, main air blower, aiutage, it is characterized in that: described combustion settling chamber is by the pipeline high-temperature heat pipe evaporimeter that is linked in sequence, sack cleaner, middle low temperature current-sharing regenerator, main air blower, aiutage, described high-temperature heat pipe evaporimeter connects the steam drum by pipeline, the steam drum connects steam accumulator by pipeline, be provided with carbon composite tungsten material filter core in the described sack cleaner, in the described middle low temperature current-sharing regenerator primary surface heat exchanger is installed, the cooling water inlet of primary surface heat exchanger is connected with the heat exchanger feed pump, the hot water outlet of primary surface heat exchanger is taken over the hot water inlet of shell-type evaporimeter, the cooling water outlet of shell-and-tube evaporator connects circulating water pool, circulating water pool is connected with the heat exchanger feed pump, consist of a loop, the working medium entrance point of shell-and-tube evaporator is connected with the high-pressure outlet end of working medium circulating pump, the sender property outlet termination working medium drum of shell-and-tube evaporator, the working medium drum is connected with the upper flange interface of low boiling working fluid steam turbine, the bottom interface of low boiling working fluid steam turbine is connected with the air inlet of shell-and-tube cooler by pipeline, the liquid-phase outlet of shell-and-tube cooler is connected with fluid reservoir by pipeline, fluid reservoir is connected with the low pressure inlet end of working medium circulating pump, the low boiling working fluid steam turbine is connected with threephase generator, an end flange interface of shell-and-tube cooler is connected with water pump, another end of shell-and-tube cooler connects lithium-bromide absorption-type refrigerating machine, lithium-bromide absorption-type refrigerating machine is connected with water pump, consists of another loop.
2. the high ash-laden gas cogeneration of mineral hot furnace according to claim 1 energy-saving dust removal special device is characterized in that: adopting R141B is the circulation organic working medium.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207104648U CN202915736U (en) | 2012-11-27 | 2012-11-27 | Special energy-saving and dedusting equipment for power generation by utilizing high dust smoke waste heat of submerged arc furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207104648U CN202915736U (en) | 2012-11-27 | 2012-11-27 | Special energy-saving and dedusting equipment for power generation by utilizing high dust smoke waste heat of submerged arc furnace |
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| Publication Number | Publication Date |
|---|---|
| CN202915736U true CN202915736U (en) | 2013-05-01 |
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| CN2012207104648U Expired - Fee Related CN202915736U (en) | 2012-11-27 | 2012-11-27 | Special energy-saving and dedusting equipment for power generation by utilizing high dust smoke waste heat of submerged arc furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103983121A (en) * | 2014-05-30 | 2014-08-13 | 中冶南方工程技术有限公司 | System for stabilizing temperature of sintering smoke and method for controlling system |
-
2012
- 2012-11-27 CN CN2012207104648U patent/CN202915736U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103983121A (en) * | 2014-05-30 | 2014-08-13 | 中冶南方工程技术有限公司 | System for stabilizing temperature of sintering smoke and method for controlling system |
| CN103983121B (en) * | 2014-05-30 | 2015-11-25 | 中冶南方工程技术有限公司 | For system and the control method thereof of stable sintering flue-gas temperature |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Wuxi Jiangnan High-Precision Cold-Drawn Pipe Co.,Ltd. Assignor: Wuxi Dongyou Environmental Science & Technology Co., Ltd. Contract record no.: 2014320000368 Denomination of utility model: Special energy-saving and dedusting equipment for power generation by utilizing high dust smoke waste heat of submerged arc furnace Granted publication date: 20130501 License type: Exclusive License Record date: 20140430 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| 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: 20130501 Termination date: 20161127 |