CN101832718B - Double-working substance heat source sintering cogeneration-type boiler system - Google Patents
Double-working substance heat source sintering cogeneration-type boiler system Download PDFInfo
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- CN101832718B CN101832718B CN2010101889560A CN201010188956A CN101832718B CN 101832718 B CN101832718 B CN 101832718B CN 2010101889560 A CN2010101889560 A CN 2010101889560A CN 201010188956 A CN201010188956 A CN 201010188956A CN 101832718 B CN101832718 B CN 101832718B
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- 238000005245 sintering Methods 0.000 title claims abstract description 47
- 239000000126 substance Substances 0.000 title claims abstract description 9
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000003546 flue gas Substances 0.000 claims abstract description 32
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 7
- 230000005611 electricity Effects 0.000 claims abstract description 5
- 230000008676 import Effects 0.000 claims description 8
- 239000007789 gas Substances 0.000 claims description 6
- 239000000779 smoke Substances 0.000 claims description 4
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 238000011084 recovery Methods 0.000 abstract description 12
- 238000001816 cooling Methods 0.000 abstract description 4
- 239000002918 waste heat Substances 0.000 description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000005265 energy consumption Methods 0.000 description 5
- 238000003825 pressing Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000002912 waste gas Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 235000014171 carbonated beverage Nutrition 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000006244 Medium Thermal Substances 0.000 description 1
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 1
- 230000003416 augmentation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer 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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- 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
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
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- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention relates to an afterheat boiler system, in particular to a double-working substance heat source sintering cogeneration-type boiler system. The system comprises a vertical cooling machine, a sintering machine, a cogeneration-type boiler, a steam condensing and compensating turbine and a generator, wherein hot air produced by the vertical cooling machine is introduced into the upper part of the cogeneration-type boiler through a pipeline; warm flue gas in the sintering machine is introduced into a sleeve-type medium-pressure evaporator on the upper-middle part of the cogeneration-type boiler through the pipeline; low-temperature flue gas of the sintering machine is introduced into a sleeve-type low-pressure evaporator on the lower-middle part of the cogeneration-type boiler through the pipeline; medium-pressure over-heat steam produced by the cogeneration-type boiler is introduced into a main steam port of the steam condensing and compensating turbine through the pipeline; and low-temperature saturated steam produced by the cogeneration-type boiler is introduced into the steam compensating port of the steam condensing and compensating turbine through the pipeline so that the steam condensing and compensating turbine drives the generator to generate electricity. By taking energy cascade utilization as a theoretical basis and taking heat exchange equipment of the vertical cooling machine as source equipment, the system integrates and recoveries the afterheat of sintering flue gas efficiently and realizes the maximum generated electricity converted from heat power.
Description
Technical field
The present invention relates to exhaust heat recovery power generation type waste heat boiler, particularly a kind of double-working substance heat source sintering cogeneration-type boiler system that reclaims two kinds of different working medium waste heats simultaneously.
Background technology
Waste heat boiler is that recovery waste heat is improving the whole device thermal efficiency, to reduce the energy-saving equipment of primary energy consumption in all kinds of technological processes, and it plays crucial effect to the quality that improves system flow and the discharging of pollution abatement thing etc.Waste heat boiler recuperation of heat object mainly contains the exhaust sensible heat after flue gas, the exchange of solid waste heat etc., is referred to as waste gas residual heat.Along with improving constantly of energy-saving and cost-reducing standard, iron and steel enterprise's waste heat recovery work deepens continuously, and the research of the key equipment-waste heat boiler in the residual neat recovering system more and more comes into one's own.In practice, industrial exhaust heat often has the characteristics of many grades multiplex (MUX) matter, and existing waste heat boiler mainly is to reclaim to single working medium thermal source waste heat, mainly contains two kinds of single import and double feed inlets.Chinese invention patent application " a kind of multi-pressure and multi-inlet generating waste heat boiler " (application number 200910074715.0) discloses a kind of many imports waste heat boiler device that reclaims according to the different subregions of waste gas residual heat grade.This device has developed into multi-pressure and multi-inlet with original single import and double feed inlet waste heat boiler, makes waste heat obtain cascade utilization, thereby the residual heat resources rate of recovery is effectively improved.But this device can not reclaim the waste heat of two kinds of different working medium simultaneously.
In iron and steel enterprise, the energy consumption of sintering circuit is only second to the ironmaking operation, is generally the 10%-20% of iron and steel enterprise's total energy consumption.It is bigger that the energy consumption index of China's sintering circuit and advanced country compare gap, and the average energy consumption of sintering deposit per ton is wanted high 20kgce.Show that according to certain steel mill's thermal balance test data of Japan the sintering deposit sensible heat accounts for 28.2% in the heat of the sintering machine income, the sintering device flue gas sensible heat accounts for 31.8%.Therefore, the research and development of the waste heat boiler equipment of efficient integrated recovery sintering device flue gas waste heat and sintering deposit sensible heat (cooler hot-air) are extremely urgent.
Summary of the invention
The present invention seeks in order to solve the single recovery sintering deposit sensible heat that prior art exists, and the low problem of waste heat recovery rate, and a kind of double-working substance heat source sintering cogeneration-type boiler system is provided.This system is according to the theory of exhaust heat stepped utilization, two kinds of waste heats of integrated recovery sintering circuit and generating electricity.
The technical scheme that the present invention solves said problem employing is: a kind of double-working substance heat source sintering cogeneration-type boiler system comprises vertical cooler, sintering machine, cogeneration-type boiler, condensing steam compensating turbine, generator.Press in superheater, the bushing type in being disposed with from top to bottom in its body of heater of said cogeneration-type boiler and press evaporimeter, middle pressure economizer, bushing type low pressure evaporator and condensate heater; The hot-air that said vertical cooler produces feeds this cogeneration-type boiler top via the hot-air inlets pipeline, and the hot air outlet pipeline of cogeneration-type boiler bottom is communicated with this vertical cooler; Press evaporimeter in the bushing type of warm flue gas via middle temperature smoke inlet pipeline feeding cogeneration-type boiler middle and upper part in the said sintering machine, the sintering machine low-temperature flue gas feeds the bushing type low pressure evaporator of cogeneration-type boiler middle and lower part via the low-temperature flue gas entrance pipe; The middle pressure superheated steam that cogeneration-type boiler produces feeds the main steam ports of condensing steam compensating turbine via main steam line; The low-pressure saturated steam that cogeneration-type boiler produces is via the filling mouth of gas filling pipeline feeding condensing steam compensating turbine, and the condensing steam compensating turbine drives generator for electricity generation.
Compared with prior art, the present invention is theoretical foundation with the cascaded utilization of energy, is source equipment with vertical cooler heat transmission equipment, and efficient integrated recovery sintering device flue gas and two kinds of waste heats of cooler hot-air are realized maximum self-produced electric weight.It has following technical characterstic:
(1) according to sintering device flue gas temperature grade it is divided in warm flue gas (320-360 ℃) and low-temperature flue gas (230-300 ℃), carry out segmentation then and reclaim, be communicated to respectively and press evaporimeter and bushing type low pressure evaporator in the bushing type.This bushing type evaporimeter can be realized and inside and outside both sides sinter fume and the heat exchange simultaneously of cooler hot-air, not only improve the residual heat resources rate of recovery but also make two kinds of working medium obtain good isolation.
(2) the bushing type evaporimeter can absorb the heat of two kinds of working medium simultaneously.Inner rib plate in the evaporimeter on the pipe can be strengthened the heat exchange effect of intraductal working medium and tube wall; Annular fin on the evaporimeter outer tube has been strengthened the heat exchange effect with outside working medium.
(3) whole waste heat boiler burner hearth is arranged as naked wall, is in adiabatci condition.Each heating surface carbonated drink header subregion is independently arranged, forms the circulation of multichannel independence water, has guaranteed that boiler water cycle is in good condition, has guaranteed boiler heating surface service life.Owing to adopt forced circulation, reduced the waste heat boiler height, make boiler structure compact more, can reduce investment outlay.
(4) for augmentation of heat transfer, optimize structure, improve boiler manufacturing, installation quality, shorten installation period, superheater, economizer, condensate heater heating surface all are adopted as serpentine rings ribbed pipe stagger arrangement counter-flow arrangement.
Description of drawings
Fig. 1 is a cogeneration-type boiler body construction sketch map according to the invention.
Fig. 2 is a bushing type evaporimeter partial enlarged drawing according to the invention.
Fig. 3 is the side view of Fig. 2.
Fig. 4 is an overall system structure sketch map of the present invention.
Among the figure: main steam line 1; In warm exhanst gas outlet pipeline 2; The middle drum 3 of pressing; Gas filling pipeline 4; Low-pressure drum 5; Low-temperature flue gas export pipeline 6; Furnace hopper 7; Hot air outlet pipeline 8; Condensate heater 9; Bushing type low pressure evaporator 10; Low-temperature flue gas entrance pipe 11; The middle economizer 12 of pressing; Press evaporimeter 13 in the bushing type; In warm smoke inlet pipeline 14; The middle superheater 15 of pressing; Hot-air inlets pipeline 16; Sleeve pipe Upstream Interface 17; Sintering device flue gas outlet 18; Inner rib plate 19; Sleeve pipe downstream interface 20; Sintering device flue gas import 21; Annular fin 22; Cogeneration-type boiler 23; Deduster 24; Air-introduced machine 25; Desulfurizer 26; Chimney 27; Condensing steam compensating turbine 28; Generator 29; Condenser 30; Oxygen-eliminating device 31; Low pressure feed water pump 32; The middle feed pump 33 of pressing; Condensate pump 34; Wind-supplying mouth 35; Circulating fan 36; Diffuse mouth 37; Vertical cooler 38; Sintering machine 39.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is detailed.
Present embodiment is with 320m
2In sintering machine sintering deposit sensible heat and the sintering machine, the low-temperature flue gas sensible heat is recovered as example and describes, with these sintering machine 39 supporting coolers be vertical cooler 38, cogeneration-type boiler 23 is vertical layout, the negative pressure operation.
Referring to Fig. 4; The present invention is made up of several parts such as vertical cooler 38, sintering machine 39, cogeneration-type boiler 23, condensing steam compensating turbine 28, generators 29, presses in being disposed with from top to bottom in cogeneration-type boiler 23 its bodies of heater and presses evaporimeter 13, middle pressure economizer 12, bushing type low pressure evaporator 10 and condensate heater 9 in superheater 15, the bushing type.
In the present embodiment; The inner rib plate 19 of shape layout in the shape of a spiral is housed in the interior pipe of pressure evaporimeter 13 and bushing type low pressure evaporator 10 in the said bushing type; The annular fin 22 of equidistant arranged is equipped with in its outer tube outside; Be the coiled pipe structure through sleeve pipe Upstream Interface 17 and sleeve pipe downstream interface 20 between every layer of sleeve pipe and be connected, the sleeve pipe stagger arrangement is arranged between adjacent layer, and the sintering device flue gas import 21 at interior pipe two ends is horizontally through the furnace wall with sintering device flue gas outlet 18.
Still referring to Fig. 4; The hot air outlet of vertical cooler 38 is communicated with cogeneration-type boiler 23 tops through hot-air inlets pipeline 16; The hot air outlet pipeline 8 of cogeneration-type boiler 23 bottoms is communicated with vertical cooler 38; Be disposed with wind-supplying mouth 35, circulating fan 36 on this hot air outlet pipeline 8 and diffuse mouth 37; Hot-air part by cogeneration-type boiler 23 is discharged is diffused through diffusing mouth 37, and gets into vertical cooler 38 from the additional quantitative cold wind of environment space through wind-supplying mouth 35 and circulating fan 36, to regulate entering cooler hot air temperature.
Referring to Fig. 2, Fig. 3, Fig. 4; In the sintering machine 39, low-temperature flue gas outlet respectively through in warm smoke inlet pipeline 14 and low-temperature flue gas entrance pipe 11 be communicated to the sintering device flue gas import 21 of pressing evaporimeter 13 and bushing type low pressure evaporator 10 in the bushing type; After the release heat by sintering device flue gas outlet 18 respectively through in warm exhanst gas outlet pipeline 2 send into deduster 24 with low-temperature flue gas export pipeline 6; Feed air-introduced machine 25 after the dedusting and get into desulphurization plant 26 again, after chimney 27 discharges.
Referring to Fig. 4, the exhaust steam of condensing steam compensating turbine 28 outlet is communicated to condenser 30, and condensed water that condenser 30 produces and external complement water get into condensate heater 9 through condensate pump 34, and the condensate after the intensification feeds oxygen-eliminating device 31 by the road.
Still referring to Fig. 1 and Fig. 4; The deaerated water part of oxygen-eliminating device 31 is pressed economizer 12 in time middle pressure feed pump 33 is delivered to; Press drum 3 in delivering to after the heating; In bushing type, press evaporimeter 13 to be heated to send behind the wet saturated steam and press drum 3 in returning, main steam line 1 is delivered to the main steam ports of condensing steam compensating turbine 28 after middle pressure superheater 15 is heated to superheated steam; Another part deaerated water of oxygen-eliminating device 31 is delivered to low-pressure drum 5 through low pressure feed water pump 32; After bushing type low pressure evaporator 10 is heated to wet saturated steam, send and press drum 5 to carry out carbonated drink separation in returning, the saturated vapor after the separation is delivered to the filling mouth of condensing steam compensating turbine 28 through gas filling pipeline.
In the native system; About 450-550 ℃ the thermal air current of discharging by vertical cooler 38 that introduce at cogeneration-type boiler 23 tops through in after pressure superheater 15 emits heat; Pass through to press in the bushing type evaporimeter 13 release heat simultaneously with warm flue gas 320-360 ℃ the sintering machine of introducing from the middle part 39; Press economizer 12 to emit behind the heat in flowing through again with 230-300 ℃ the sintering machine low-temperature flue gas release heat that gets into from bushing type low pressure evaporator 10, after condensate heater 9 release heat cooling back discharge from the bottom of cogeneration-type boiler 23.Thus; This cogeneration-type boiler 23 adopts the hot waste gas high efficiente callback of part circulation with cooler 38; Temperature 450-480 ℃ of producing of cooler 38, pressure are that the middle pressure superheated steam of 3.82MPa gets into condensing steam compensating turbine 28 with the form of main steam; Produced simultaneously pressure is the form entering condensing steam compensating turbine 28 of the low-pressure saturated steam of 0.4-0.7MPa with filling, and generator of driven in common 29 generatings then form double-working substance heat source generating waste heat boiler system.Native system can make the supporting Turbo-generator Set installed capacity of waste heat boiler brought up to the 14MW of duplexing matter admission by the 8.2MW of single import admission; Improve the self-produced electric weight of cooler waste heat recovery effectively, maximally utilised low-grade residual heat resources in this part.
Claims (2)
1. double-working substance heat source sintering cogeneration-type boiler system; Comprise vertical cooler, sintering machine, cogeneration-type boiler, condensing steam compensating turbine, generator; It is characterized in that, press in superheater, the bushing type in being disposed with from top to bottom in its body of heater of said cogeneration-type boiler and press evaporimeter, middle pressure economizer, bushing type low pressure evaporator and condensate heater; The hot-air that said vertical cooler produces feeds this cogeneration-type boiler top via the hot-air inlets pipeline, and the hot air outlet pipeline of cogeneration-type boiler bottom is communicated with this vertical cooler; Press evaporimeter in the bushing type of warm flue gas via middle and upper part in the middle temperature smoke inlet pipeline feeding cogeneration-type boiler in the said sintering machine; The sintering machine low-temperature flue gas feeds the bushing type low pressure evaporator of middle and lower part in the cogeneration-type boiler via the low-temperature flue gas entrance pipe; The middle pressure superheated steam that cogeneration-type boiler produces feeds the main steam ports of condensing steam compensating turbine via main steam line; The low-pressure saturated steam that cogeneration-type boiler produces is via the filling mouth of gas filling pipeline feeding condensing steam compensating turbine, and the condensing steam compensating turbine drives generator for electricity generation.
2. double-working substance heat source sintering cogeneration-type boiler system according to claim 1; It is characterized in that; The inner rib plate of shape layout in the shape of a spiral is housed in the interior pipe of pressure evaporimeter and bushing type low pressure evaporator in the said bushing type; The annular fin of equidistant arranged is equipped with in its outer tube outside; Be the coiled pipe structure through sleeve pipe Upstream Interface and sleeve pipe downstream interface between every layer of sleeve pipe and be connected, the sleeve pipe stagger arrangement arranges that the sintering device flue gas import and the sintering device flue gas export pipeline at interior pipe two ends are horizontally through the furnace wall between adjacent layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101889560A CN101832718B (en) | 2010-05-28 | 2010-05-28 | Double-working substance heat source sintering cogeneration-type boiler system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101889560A CN101832718B (en) | 2010-05-28 | 2010-05-28 | Double-working substance heat source sintering cogeneration-type boiler system |
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| CN101832718A CN101832718A (en) | 2010-09-15 |
| CN101832718B true CN101832718B (en) | 2012-01-25 |
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| CN2010101889560A Expired - Fee Related CN101832718B (en) | 2010-05-28 | 2010-05-28 | Double-working substance heat source sintering cogeneration-type boiler system |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305549A (en) * | 2011-07-08 | 2012-01-04 | 东北大学 | Sintering ring cold machine waste heat high-efficiency power generating system and utilization method thereof |
| CN102359400B (en) * | 2011-09-14 | 2014-05-14 | 中冶赛迪工程技术股份有限公司 | Comprehensive utilization system for waste heat steam of steel enterprise |
| CN102607287B (en) * | 2012-04-10 | 2013-11-13 | 上海瑞恩能源投资有限公司 | Ferro-nickel smelting process waste heat generating system |
| CN103939306B (en) * | 2014-04-11 | 2017-10-10 | 中国华能集团清洁能源技术研究院有限公司 | A kind of two loop-type solar heat power generation systems |
| CN107328245B (en) * | 2016-12-30 | 2018-12-21 | 华北水利水电大学 | A kind of double-work medium afterheat generating system |
| CN110593977B (en) * | 2019-08-30 | 2024-04-16 | 珠海格力电器股份有限公司 | Dual-working-medium Rankine cycle waste heat power generation method, system and power generator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS602597B2 (en) * | 1982-05-18 | 1985-01-22 | 住友重機械工業株式会社 | Exhaust gas circulation sintering equipment |
| CN201218660Y (en) * | 2008-04-24 | 2009-04-08 | 西安思安新能源有限公司 | Power generation apparatus by waste heat of sintering production |
| CN101298962A (en) * | 2008-06-20 | 2008-11-05 | 东北大学 | Classification recovery and step utilizing method of residual heat resources in sintering process |
| CN101509729B (en) * | 2009-01-15 | 2010-08-25 | 江苏东能环保能源科技有限公司 | Sintered power generation by waste heat system with by-product gas afterburning |
| CN101706215B (en) * | 2009-05-07 | 2011-07-20 | 河北理工大学 | Method and device for double-source power cogeneration with sintering waste heat |
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Owner name: TANGSHAN IRON AND STEEL GROUP CO., LTD. |
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Inventor after: Zhao Bin Inventor after: Liu Hongtao Inventor after: Su Fuyuan Inventor after: Zhang Yuzhu Inventor after: Tian Xin Inventor after: Wu Zhifei Inventor after: Zhang Weiran Inventor after: Jia Nan Inventor after: Bian Jichao Inventor after: Song Meiwei Inventor after: Du Lei Inventor before: Zhao Bin Inventor before: Zhang Yuzhu Inventor before: Wu Zhifei Inventor before: Zhang Weiran Inventor before: Jia Nan Inventor before: Bian Jichao Inventor before: Song Meiwei Inventor before: Du Lei Inventor before: Liu Hongtao |
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Effective date of registration: 20101122 Address after: Xinhua Xidao 063000 Hebei province Tangshan City Lunan District No. 46 Applicant after: Hebei Polytechnic University Co-applicant after: TANGSHAN IRON&STEEL GROUP Co.,Ltd. Address before: Xinhua Xidao 063000 Hebei province Tangshan City Lunan District No. 46 Applicant before: Hebei Polytechnic University |
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