CN104534893B - Smoke waste heat recycling device - Google Patents
Smoke waste heat recycling device Download PDFInfo
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- CN104534893B CN104534893B CN201510004641.9A CN201510004641A CN104534893B CN 104534893 B CN104534893 B CN 104534893B CN 201510004641 A CN201510004641 A CN 201510004641A CN 104534893 B CN104534893 B CN 104534893B
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- air
- outlet
- exchanger tube
- flue gas
- heat exchanger
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
-
- 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
-
- 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
Abstract
The invention provides a smoke waste heat recycling device. The smoke waste heat recycling device comprises a recycling device body and an induced draft fan. The recycling device body is provided with an air inlet, an air outlet, a smoke inlet, a smoke outlet and a heat exchange pipe. The recycling device body is provided with a first through hole. The heat exchange pipe is inserted into the first through hole. An independent smoke passageway and an independent air passageway are formed by isolating the recycling device body through the heat exchange pipe. The air inlet and the air outlet are communicated with the air passageway. The smoke inlet and the smoke outlet are communicated with the smoke passageway. A heat exchange pipe made of glass materials serves as the heat exchange pipe. The inducted draft fan is connected with the smoke inlet. The glass materials are resistant to corrosion, and therefore the temperature of smoke can be lowered below the dew point temperature through the heat exchange pipe made of the glass materials, a user does not need to worry about corrosion of acid of various types to the heat exchange pipe, and the waste heat recycling efficiency is improved; the induced draft fan is made of metal materials and arranged at the front end of the recycling device body, and the corrosion of acid of various types to materials of an induced draft fan body can be prevented.
Description
Technical field
The present invention relates to heating furnace heat recovery technology field, particularly to a kind of flue gas waste heat recovery apparatus.
Background technology
Flue gas is the main path of general energy consumption equipment waste energy, in order to make full use of flue gas heat, improves energy profit
By efficiency, all can be furnished with flue gas waste heat recovery apparatus after oil, power industry heating furnace, utilize fume afterheat to add air.Due to
The flue gas that burning is formed is contained within substantial amounts of steam, has reached dew point along with the reduction steam of temperature and has condensed into steam.
In general combustion product gases, (particularly coal fuel) all can have three oxidations that certain sulfur dioxide and a small amount of complete oxidation are formed
Sulfurous acid that sulfur, sulfur dioxide and sulfur trioxide are combined with water to form and sulphuric acid.Owing to present waste-heat recovery device all uses
Metal material is made, and sulfurous acid and sulphuric acid can corrode metal material, cause equipment to damage.In order to ensure equipment safely, prevent cigarette
Diarrhea due to stagnation of QI reveals, and existing waste-heat recovery device can only sacrifice waste heat recovery efficiency, improve exhaust gas temperature.
Summary of the invention
For solving the waste-heat recovery device made of existing metal material for preventing equipment corrosion, it is impossible to improve waste heat further
The problem of organic efficiency, the invention provides a kind of new flue gas waste heat recovery apparatus.
The present invention provides a kind of flue gas waste heat recovery apparatus, including retracting device main body, air-introduced machine；Described retracting device master
There is on body air intlet, air outlet slit, gas approach, exhanst gas outlet and heat exchanger tube；Is had in described retracting device main body
One through hole, described heat exchanger tube inserts described first through hole, isolates described retracting device main body and form independent exhaust gases passes and sky
Gas passage；Described air intlet connects with described air duct respectively with described air outlet slit, described gas approach and described cigarette
Gas outlet connects with described exhaust gases passes respectively；Described heat exchanger tube is the heat exchanger tube that glass material is made, described air-introduced machine and institute
State gas approach to connect；Preferably, there is the enhanced heat exchange body along described heat exchanger tube axial distribution in described heat exchanger tube；Described by force
Changing heat exchanging body is waveform or spiral type；On described enhanced heat exchange body, there is the second through hole.
Owing to glass material has corrosion resistance characteristic, use glass material to make heat exchanger tube and flue-gas temperature can be reduced to dew
Below some temperature, without worrying that condensed water and the various oxides in flue gas react the corruption of the various acid exchange heat pipes produced
Erosion, improves waste heat recovery efficiency；Air-introduced machine is that metal material is made, and air-introduced machine is arranged on retracting device body front end, can
Prevent the various acid corrosion to air-introduced machine bulk material.
Enhanced heat exchange body is set in heat exchanger tube, enhanced heat exchange body can flow-disturbing air, improve air stroke and conduction of heat effect
Rate.
Preferably, a diameter of 12.0-80.0mm of described heat exchanger tube, wall thickness are 0.8mm-12mm.
Preferably, having sealing plate at described air intlet and at described air outlet slit, described first through hole is arranged on institute
State on sealing plate.
Preferably, described first through hole and described heat exchanger tube are by sealing gasket or sealant sealing.
Preferably, automatic condensate drain liquid parts are also included；Described automatic condensate drain liquid parts have inner core, urceolus and lime set and discharge
Mouthful；Described inner core is connected with described exhanst gas outlet；Described inner core inserts in described urceolus, the discharge outlet of described inner core with described outside
The inner space of cylinder；Described lime set outlet is positioned on the outer wall of described urceolus and the inner space of described urceolus；Described inner core
Discharge outlet height less than described lime set outlet height.
Automatic condensate drain liquid parts are set, in retracting device body produce condensed water can flow into automatic condensate drain liquid parts and by
Lime set outlet is discharged, and prevents condensed water from accumulating the operational failure causing whole waste-heat recovery device；Automatic condensate drain liquid parts
Inner core and urceolus form fluid-tight, can prevent outside air from entering exhaust gases passes.
Preferably, described automatic condensate drain liquid parts have water supplement port；Described water supplement port be positioned on the outer wall of described urceolus and
The inner space of described urceolus, the height of described water supplement port is higher than described lime set discharge outlet height.
When the accumulation water in urceolus is not enough to be formed fluid-tight, water supplement port water filling can be passed through, facilitate automatic condensate drain liquid parts
Control.
Preferably, described automatic condensate drain liquid parts also have blowoff valve；Described blowoff valve is positioned at described condensate drain liquid parts
Bottom.
Preferably, described automatic condensate drain liquid parts are the condensate drain liquid parts of glass steel material.
Accompanying drawing explanation
Fig. 1 is inventive embodiments flue gas waste heat recovery apparatus application schematic diagram；
Fig. 2 is the retracting device main body front view of embodiment of the present invention flue gas waste heat recovery apparatus；
Fig. 3 is the retracting device main body side view of embodiment of the present invention flue gas waste heat recovery apparatus；
Fig. 4 be the heat exchanger tube in retracting device main body the first schematic diagram is set；
Fig. 5 is that the heat exchanger tube the second in retracting device main body arranges schematic diagram；
Fig. 6 be the heat exchanger tube in retracting device main body the third schematic diagram is set；
Fig. 7 is the condensate drain liquid block diagram of embodiment of the present invention flue gas waste heat recovery apparatus.
Detailed description of the invention
For making those skilled in the art be better understood from technical scheme, below in conjunction with the accompanying drawings and specific embodiment
The present invention is described in further detail.
Fig. 1 is inventive embodiments flue gas waste heat recovery apparatus application schematic diagram, as can be seen from Figure 1 the embodiment of the present invention
Flue gas waste heat recovery apparatus includes air-introduced machine 1, aerator 2, retracting device main body 3A, automatic condensate drain liquid parts 3B and corresponding
Connecting line.Wherein retracting device main body 3A achieves the exchange of heat；Automatically condensate drain liquid parts 3B is able to receive that retracting device
The condensed water formed in main body 3A, and automatically condensed water is entered follow-up sewage disposal device；Air-introduced machine plays guiding high temperature cigarette
Gas is to the effect of retracting device main body 3A；Aerator plays and guides air to the effect of retracting device main body 3A.
Retracting device main body 3A in the present embodiment is rectangle shell structure, have air intlet 34, air outlet slit 33,
Gas approach 31, exhanst gas outlet 32 and heat exchanger tube 30 (heat exchanger tube 30 embodies in Fig. 2-Fig. 6).Air intlet 34 and aerator 2
Connect, aerator 2 by Cryogenic air pressurized transfer to retracting device main body 3A；After the air of heating is passed to by air outlet slit 33
Continuous operation sequence.Gas approach 31 in the present embodiment is connected with air-introduced machine 1, and boiler or preamble heat recovery are set by air-introduced machine 1
Flue gas in Bei introduces retracting device main body 3A.Exhanst gas outlet 32 and automatic condensate drain liquid parts 3B and chimney 4 connect；By reclaiming
Apparatus main body 3A changes thermogenetic condensed water can drain into automatic condensate drain liquid parts 3B by exhanst gas outlet 32, and low-temperature flue gas is by chimney
4 discharge or carry out subsequent treatment.
On retracting device body in the embodiment of the present invention, there is the first through hole；Heat exchanger tube 30 is arranged on the first through hole,
Retracting device main body 3A separate exhaust gases passes and air duct have been divided into.Exhaust gases passes and gas approach 31, flue gas
Outlet 32 connection, air duct connects with air intlet 34, air outlet slit 33.Because flue-gas temperature is led to more than air themperature, heat
The tube wall crossing heat exchanger tube 30 conducts to air from flue gas.In the present embodiment, flow of flue gas direction is vertical with air-flow direction；?
In other embodiments, it is possible to change exhaust gases passes, the layout relationship of air duct, change flow of flue gas direction and air flowing side
To relation.
The heat exchanger tube that heat exchanger tube 30 in the embodiment of the present invention is made for glass material, glass material has good anti-corruption
Erosion characteristic, the condensed water formed after flue gas cool-down is combined formation with the acidic oxide such as sulfur dioxide in flue gas, sulfur trioxide
Middle strong acid, strong acid can not etching glass material, therefore flue-gas temperature can be reduced to dew point temperature even less than 100 DEG C, improve
The utilization ratio of heat.It should be noted that, the heat exchanger tube 30 in the present embodiment is industrial heat resistant glass, it is possible to long-term work exists
More than 300 DEG C, structural stability is good, the most broken, be easy to manufacture, transport and install, it is possible to acid-alkali-corrosive-resisting, it is ensured that smoke evacuation temperature
Degree can be less than flue gas dew point temperature, thus Mist heat recovering effectively；Can adopt according to application demand in other embodiments
With the glass material of other temperature capability.
Owing to air-introduced machine is that metal material is made, for preventing condensed water from corroding air-introduced machine 1 material of main part, relative to existing skill
Layout in art, before air-introduced machine 1 has been arranged on retracting device main body 3A by the embodiment of the present invention.When high-temperature flue gas is by air-introduced machine
Steam vapour pressure is unsaturated, thus without condensing into water, also would not impact air-introduced machine material.
The embodiment of the present invention uses the inner side cavity of heat exchanger tube 30 as air duct, uses heat exchanger tube 30 and retracting device
The space that body is formed is as exhaust gases passes.Certainly, consider may be used without the inner side cavity conduct of heat exchanger tube 30 from application
The space that exhaust gases passes, heat exchanger tube 30 and retracting device body are formed is as air duct；But consideration flue gas have substantial amounts of
Flue dust, life-time service may block the inner side cavity of heat exchanger tube 30, and it is not recommended that be arranged such.
Heat exchanger tube 30 in the embodiment of the present invention is arranged on the first through hole, and the first through hole is positioned at air intlet 34, air
Export on the sealing plate of 33 correspondences, be coaxially disposed between corresponding two through holes.For preventing flue gas from the first through hole and heat exchanger tube 30
Join domain reveal, be also provided with sealing gasket or fluid sealant in this position.Sealing gasket can use polytetrafluoro commonly used in the art
The sealing gasket that vinyl material is made, fluid sealant can use high-temperature seal adhesive.Because heat exchanger tube 30 and sealing plate use sealing gasket or close
Sealing connects, and therefore it is detachable, as single heat exchanger tube 30 goes wrong and can directly change.
The diameter of the heat exchanger tube 30 in the present embodiment can be between 18.0mm-60.0mm, and wall thickness can be at 0.8mm-12.0mm
Between, length and the quantity of heat exchanger tube 30 can be set accordingly according to the heat exchange efficiency of actual design.
In order to improve the heat exchange efficiency of heat-exchanger rig body further, have in the heat exchanger tube 30 in the present embodiment and axially divide
The enhanced heat exchange body 301 of cloth, enhanced heat exchange body 301 can play the effect of agitation ventilating air, improve air at heat exchanger tube 30
Stroke.Such as Fig. 6, the enhanced heat exchange body 301 in the present embodiment is spiral enhanced heat exchange body 301, on enhanced heat exchange body 301 also
There is the second through hole 302.Certainly, in other embodiments, enhanced heat exchange body 301 also can be not provided with through hole, shape is alternatively
Waveforms etc. have the structure hindering air-flow character, respectively such as Fig. 4 and Fig. 5.Because enhanced heat exchange body 301 is positioned at air duct
In, the speed being corroded is relatively low, and its material can be metal, it is possible to for the material such as glass or pottery.
It should be noted that, heat exchanger tube 30 outside in the embodiment of the present invention have employed light-pipe structure.Smooth surface can prevent
The deposition of dust in flue gas, long-time use ensures heat transfer efficiency.
According to practical application, in the embodiment of the present invention, gas approach 31 introduces the high-temperature flue gas of 180 DEG C, passes through internal heat
After, flue-gas temperature can be reduced to below dew point temperature, heat exchange efficiency improves 30%.When temperature drops to below dew point temperature
Time, the full condensation of the steam in flue gas forms accumulation water, needs to accumulate water and discharges, prevents from accumulating for a long time and cause exhaust gases passes stifled
Plug.Automatic condensate drain liquid parts 3B in the present embodiment is exactly the effect collected and accumulate water.
Automatic condensate drain liquid parts 3B in the present invention is positioned at the lower of whole flue gas waste heat recovery apparatus, it is ensured that heat-exchanger rig
Condensed water in body can be discharged.Fig. 7 is the condensate drain liquid block diagram of embodiment of the present invention flue gas recovery device；Can be seen that
Automatic condensate drain liquid parts 3B in the embodiment of the present invention has inner core 36, urceolus 37 and lime set outlet 39.Wherein inner core 36 with
Exhanst gas outlet 32 connects and inserts in urceolus 37, is directed through condensed water that intermediate conduit stream comes in the inner chamber of urceolus 37.This
Having the accumulation water of certain depth in urceolus 37 inner chamber in inventive embodiments, the discharge outlet of inner core 36 is inserted in accumulation water,
Therefore can form fluid-tight, prevent air from entering flue gas exhausting pipe line system.
Lime set outlet 39 is positioned on the outer wall of urceolus 37 and the inner space of urceolus 37, and its height is higher than inner core 36
The height of discharge outlet.When urceolus 37 inner chamber accumulates the height that water has reached lime set outlet 39, partial product water is directly from solidifying
Liquid outlet 39 is discharged.
For preventing the inefficacy of fluid-tight function, the automatic condensate drain liquid parts 3B in the embodiment of the present invention also has water supplement port 35,
Water supplement port 35 also is located on the outer wall of urceolus 37, with the inner space of urceolus 37；When the accumulation water height in urceolus 37 inner chamber is low
When inner core 36 discharge outlet height, by water supplement port 35 to inner chamber water filling, flood discharge outlet, again form fluid-tight.For preventing from amassing
Water is directly discharged from water supplement port 35, and the height of water supplement port 35 is higher than the height of lime set discharge outlet.Certainly, in other realities of the present invention
Execute and example also can be not provided with water supplement port 35, only rely on condensed water and form fluid-tight.
Because the dust of flue gas can be along with, in the inner chamber of condensation flow to urceolus 37, accumulating in life-time service urceolus 37 inner chamber
Substantial amounts of mud, in the embodiment of the present invention, the bottom of urceolus 37 also has blowoff valve 38, when mud reaches a certain amount of, directly beats
Drive blowoff valve 38 by sludge removal.It should be appreciated that blowoff valve 38 is not to realize automatic condensate drain liquid parts 3B drain function
Core component, in other embodiments, it is possible to be not provided with blowoff valve 38.
Because accumulating in water containing corrosive liquids such as substantial amounts of sulfurous acid, sulphuric acid, for prevent from corroding in the present embodiment from
Dynamic condensate drain liquid parts 3B and intermediate conduit all use glass-reinforced plastic material to make.
Flue gas waste heat recovery apparatus in the above embodiment of the present invention is described in detail.Apply specific case herein
Principle and embodiment to the present invention are set forth, and the explanation of above example is only intended to help to understand the core of the present invention
Thought is thought, without departing from the principles of the present invention, also the present invention can be carried out some improvement and modification, and these improve and repair
Decorations also fall within the scope of the present invention.
Claims (6)
1. a flue gas waste heat recovery apparatus, including retracting device main body (3A), air-introduced machine (1)；Described retracting device main body
(3A) there is on air intlet (34), air outlet slit (33), gas approach (31), exhanst gas outlet (32) and heat exchanger tube (30)；Institute
Stating and have the first through hole in retracting device main body (3A), described heat exchanger tube (30) inserts described first through hole, isolates described recovery
Apparatus main body (3A) forms independent exhaust gases passes and air duct；Described air intlet (34) and described air outlet slit (33) point
Not connecting with described air duct, described gas approach (31) and described exhanst gas outlet (32) are respectively with described exhaust gases passes even
Logical；It is characterized in that, described heat exchanger tube (30) is the heat exchanger tube (30) that glass material is made, and described air-introduced machine enters with described flue gas
Mouth (31) connects；
There is in described heat exchanger tube (30) axially distributed enhanced heat exchange body (301)；Described enhanced heat exchange body (301) is wave
Shape or spiral type；On described enhanced heat exchange body (301), there is the second through hole (302)；
Also include automatic condensate drain liquid parts (3B)；Described automatic condensate drain liquid parts (3B) has inner core (36), urceolus (37) and coagulates
Liquid outlet (39)；Described inner core (36) is connected with described exhanst gas outlet (32)；Described inner core (36) inserts described urceolus (37)
In, the discharge outlet of described inner core (36) and the inner space of described urceolus (37)；Described lime set outlet (39) be positioned at described outside
Cylinder (37) outer wall on and the inner space of described urceolus (37)；The discharge outlet height of described inner core (36) is less than described lime set
Outlet (39) is highly；
Described automatic condensate drain liquid parts (3B) has water supplement port (35)；Described water supplement port (35) is positioned at the outer wall of described urceolus (37)
Going up and the inner space of described urceolus (37), the height of described water supplement port (35) is higher than described lime set discharge outlet height.
Flue gas waste heat recovery apparatus the most according to claim 1, it is characterised in that described heat exchanger tube (30) a diameter of
12.0-80.0mm, wall thickness be 0.8mm-12mm.
Flue gas waste heat recovery apparatus the most according to claim 1, it is characterised in that described air intlet (34) place and described
Air outlet slit (33) place has sealing plate, and described first through hole is arranged on described sealing plate.
Flue gas waste heat recovery apparatus the most according to claim 3, it is characterised in that described first through hole and described heat exchanger tube
(30) by sealing gasket or sealant sealing.
Flue gas waste heat recovery apparatus the most according to claim 1, it is characterised in that described automatic condensate drain liquid parts (3B) is also
There is blowoff valve (38)；Described blowoff valve (38) is positioned at the bottom of described condensate drain liquid parts.
Flue gas waste heat recovery apparatus the most according to claim 1, it is characterised in that described automatic condensate drain liquid parts (3B) is
The condensate drain liquid parts of glass steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510004641.9A CN104534893B (en) | 2015-01-06 | 2015-01-06 | Smoke waste heat recycling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510004641.9A CN104534893B (en) | 2015-01-06 | 2015-01-06 | Smoke waste heat recycling device |
Publications (2)
| Publication Number | Publication Date |
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| CN104534893A CN104534893A (en) | 2015-04-22 |
| CN104534893B true CN104534893B (en) | 2017-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510004641.9A Active CN104534893B (en) | 2015-01-06 | 2015-01-06 | Smoke waste heat recycling device |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104848239A (en) * | 2015-04-24 | 2015-08-19 | 洛阳明远石化技术有限公司 | Smoke exhaust cooling equipment |
| CN113484228A (en) * | 2021-07-01 | 2021-10-08 | 东北电力大学 | Multi-material ash deposition corrosion state online monitoring system and method in flue gas environment |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1317190B1 (en) * | 2000-04-07 | 2003-05-27 | Danieli Off Mecc | DEVICE AND COOLING METHOD FOR SMOKE COLLECTORS |
| CN101813422A (en) * | 2009-02-19 | 2010-08-25 | 中国石油化工集团公司 | Waste heat recovery system of petrochemical heating furnace |
| CN201517894U (en) * | 2009-09-21 | 2010-06-30 | 江苏焱鑫科技股份有限公司 | Industrial furnace combustion smoke waste heat recycling system suitable for fuel oil work conditions |
| CN103185350A (en) * | 2011-12-29 | 2013-07-03 | 洛阳合纵石化工程有限公司 | Glass tube air preheater |
| CN203586185U (en) * | 2013-10-30 | 2014-05-07 | 广州迪森热能设备有限公司 | Drainage device for condensate water in smoke box of horizontal type oil-gas burning boiler |
| CN104132325B (en) * | 2014-01-06 | 2016-03-30 | 衡水超越节能工程有限公司 | The degree of depth reclaims the enamel heat pipe low-level (stack-gas) economizer of heat of smoke discharged from boiler of power station |
| CN204421657U (en) * | 2015-01-06 | 2015-06-24 | 洛阳明远石化技术有限公司 | A kind of flue gas waste heat recovery apparatus |
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Effective date of registration: 20210210 Address after: Room 1302, 3rd floor, building 1, yinkun science and Technology Park, No. 6, Fenghua Road, Luoyang hi tech Development Zone, Luoyang City, Henan Province, 471000 Patentee after: LUOYANG MINGYUAN PETROCHEMICAL INDUSTRY TECHNOLOGY Co.,Ltd. Patentee after: LUOYANG RUICHANG ENVIRONMENTAL ENGINEERING Co.,Ltd. Address before: Room 1302, 3rd floor, building 1, yinkun science and Technology Park, No. 6, Fenghua Road, Luoyang hi tech Development Zone, Luoyang City, Henan Province, 471000 Patentee before: LUOYANG MINGYUAN PETROCHEMICAL INDUSTRY TECHNOLOGY Co.,Ltd. |