CN213630449U - Surface combustion device for tail gas treatment in contaminated site remediation - Google Patents
Surface combustion device for tail gas treatment in contaminated site remediation Download PDFInfo
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- CN213630449U CN213630449U CN202022619547.3U CN202022619547U CN213630449U CN 213630449 U CN213630449 U CN 213630449U CN 202022619547 U CN202022619547 U CN 202022619547U CN 213630449 U CN213630449 U CN 213630449U
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- burner body
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- gas
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 42
- 238000005067 remediation Methods 0.000 title claims abstract description 16
- 239000007789 gas Substances 0.000 claims description 86
- 239000000446 fuel Substances 0.000 claims description 20
- 239000000523 sample Substances 0.000 claims description 20
- 238000001514 detection method Methods 0.000 claims description 14
- 239000000835 fiber Substances 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 14
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 9
- 229910052760 oxygen Inorganic materials 0.000 claims description 9
- 239000001301 oxygen Substances 0.000 claims description 9
- 239000005416 organic matter Substances 0.000 claims description 8
- 239000013589 supplement Substances 0.000 claims description 4
- 238000005496 tempering Methods 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims 1
- 238000000034 method Methods 0.000 description 12
- 239000000203 mixture Substances 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007084 catalytic combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- LQERIDTXQFOHKA-UHFFFAOYSA-N nonadecane Chemical compound CCCCCCCCCCCCCCCCCCC LQERIDTXQFOHKA-UHFFFAOYSA-N 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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- Incineration Of Waste (AREA)
- Regulation And Control Of Combustion (AREA)
Abstract
The utility model discloses a surface combustion device for tail gas treatment in contaminated site remediation, which comprises a premixing component, a surface burner body (7) and a controller (9); the premixing assembly comprises a Venturi tube (4), a fresh air pipeline (100), a polluted gas pipeline (200), a premixing fan (5) and a fully premixed gas pipeline (300); the surface burner body is connected with a fully premixed gas pipeline and a chimney (8); a gas combustion channel is formed in the surface burner body from bottom to top by the surface gas inlet, the gas inlet distributor (71), the porous supporting plate (72), the igniter and the gas outlet; the controller is connected with the second pneumatic valve on the fresh air pipeline, the third pneumatic valve on the polluted gas pipeline and the frequency converter in the premixing fan. The utility model discloses can adjust in a flexible way in advance gaseous flow, concentration and the constitution to satisfy the different demands that pollute place tail gas treatment, application range is wide.
Description
Technical Field
The utility model relates to a pollute place repair equipment especially relates to a surface combustion device for polluting among place restoration tail gas treatment.
Background
The pollution site treatment technology can be divided into the following steps according to the source treatment process: ISCO, ISBR, etc. "source reaction" techniques and MPE, ISTD, etc. "source removal" techniques. The source removal technology generally relates to a treatment process of organic pollution tail gas, for example, for a petrochemical and other pollution sites, a treatment process containing hydrocarbon is an indispensable component of the organic pollution tail gas.
The existing methods for treating organic gas mainly comprise liquid absorption, activated carbon adsorption, catalytic combustion, direct combustion and the like. The direct combustion technology is that waste gas is sent into an incinerator, preheated by a preheater, enters a furnace hearth to be mixed with high-temperature open fire generated by a burner and is fully decomposed, has the advantages of high purification efficiency, fuel gas or fuel oil serving as fuel and the like, and is generally used for treating high-concentration organic polluted gas.
Flame combustion is divided into premixed combustion and diffusion combustion. The method is characterized by comprising the following steps: (ii) reaction of fuel with oxidant at elevated temperature, higher temperatures contributing to flame stabilization, but high flame temperatures result in NOXThe production increases, resulting in environmental pollution. ② largeMost fuels complete combustion in a very thin flame layer, but the combustion reaction will complete in an invisible region downstream. In order to stabilize the flame, the visible combustion process requires a strong flue gas recirculation after combustion.
Disclosure of Invention
An object of the utility model is to provide a surface combustion device for polluting among place restoration tail gas treatment can adjust in a flexible way gas's in advance flow, concentration and constitution to satisfy the different demands that pollute place tail gas treatment, application range is wide.
The utility model discloses a realize like this:
a surface combustion device for tail gas treatment in contaminated site remediation comprises a premixing component, a surface burner body and a controller; the premixing assembly comprises a venturi tube, a fresh air pipeline connected to one inlet of the venturi tube, a polluted gas pipeline connected to the other inlet of the venturi tube, and a full premixing gas pipeline connected to the outlet of the venturi tube through a premixing fan; the air inlet of the surface burner body is connected with a full premixed gas pipeline, and the air outlet of the surface burner body is connected to a chimney through a tail gas discharge pipeline; the surface burner body is internally provided with an air inlet distributor and a porous supporting plate, an air inlet of the surface burner body, the air inlet distributor, the porous supporting plate, a plurality of igniters and an air outlet of the surface burner body which are sequentially arranged from bottom to top, and a gas combustion channel is formed in the surface burner body; the output end of the controller is respectively connected with a second pneumatic valve arranged on the fresh air pipeline, a third pneumatic valve arranged on the polluted gas pipeline and a frequency converter arranged in the premixing fan.
The porous supporting plate consists of a fixed porous layer and floating valves, and the floating valves are installed in the openings of the fixed porous layer in a matching manner, so that a plurality of floating valves are uniformly distributed on the fixed porous layer.
The top of the porous supporting plate is covered with a metal fiber layer, and a plurality of igniters are uniformly distributed above the metal fiber layer.
A tempering detector is arranged between the porous supporting plate and the air inlet distributor, a fire leaving detector is arranged between the metal fiber layer at the top of the porous supporting plate and the air outlet of the surface burner body, and a temperature detection probe is arranged in the porous supporting plate.
And a tempering check valve is arranged on the full premix gas pipeline.
The lateral inlet of the Venturi tube is connected to a fuel air inlet device through a fuel supplement pipeline, a first pneumatic valve is arranged on the fuel supplement pipeline, and the output end of the controller is connected with the first pneumatic valve.
And an air flow meter is arranged on the fresh air pipeline, and the output end of the air flow meter is connected with the input end of the controller.
The method is characterized in that: the fresh air pipeline is connected to a fresh air fan, and a fresh air filter element is arranged at an air outlet of the fresh air fan.
The multifunctional detection probe for the concentration, the flow and the pressure of the air inlet organic matter and the oxygen content probe are arranged on the polluted gas pipeline, and the output ends of the multifunctional detection probe for the concentration, the flow and the pressure of the air inlet organic matter and the oxygen content probe are respectively connected with the input end of the controller.
The tail gas emission pipeline is provided with an organic gas detector, CO and CO2Detector, NOXDetector and exhaust gas O2Detector, organic gas detector, CO and CO2Detector, NOXDetector and exhaust gas O2The output ends of the detectors are respectively connected with the input end of the controller.
Compared with the prior art, the utility model, following beneficial effect has:
1. the utility model discloses can produce the inlet flow of tail gas through the combination of float valve weight and the different piece-rate system of adjustment adaptation to satisfy the processing requirement that pollutes the place different processing period tail gas flow and change, satisfy the processing demand of different tail gas concentration simultaneously through replenishing fresh air and fuel, adaptability, commonality are good, and satisfy low CO, NOXThe environmental protection requirement of emission.
2. The utility model discloses a float valve passes through the mode of screw thread and installs in the trompil, and installation, maintenance, change are more convenient, not only make the combination of float valve more nimble with the adjustment to satisfy different gas flow's processing demand, also make the maintenance cost greatly reduced of device.
Drawings
FIG. 1 is a schematic diagram of the operation of the surface combustion device for tail gas treatment in contaminated site remediation according to the present invention;
fig. 2 is a schematic view of the circuit connection of the controller in the surface combustion device for tail gas treatment in contaminated site remediation of the utility model.
In the figure, 1 fresh air blower, 2 fuel inlet device, 3 fresh air filter element, 4 venturi tubes, 5 premixing blower, 6 backfire check valve, 7 surface burner body, 71 inlet distributor, 72 porous support plate, 721 fixed porous layer, 722 floating valve, 73 metal fiber layer, 7a backfire detector, 7B fire detector, 7C temperature detection probe, 8 chimney, 9 controller, 100 fresh air pipeline, 200 polluted gas pipeline, 300 full premixing gas pipeline, 400 tail gas exhaust pipeline, 500 fuel replenishing pipeline, A first pneumatic valve, B second pneumatic valve, C third pneumatic valve, a air flow meter, B inlet organic matter concentration flow pressure multifunctional detection probe, C oxygen content probe, d organic gas detector, eCO and CO2Detector, fNOXDetector, g tail gas O2A detector.
Detailed Description
The invention will be further explained with reference to the drawings and the specific embodiments.
Referring to fig. 1 and 2, a surface combustion device for tail gas treatment in contaminated site remediation comprises a premixing assembly, a surface burner body 7 and a controller 9; the premixing component comprises a venturi tube 4, a fresh air pipeline 100 connected to one inlet of the venturi tube 4, a polluted gas pipeline 200 connected to the other inlet of the venturi tube 4, and a fully premixed gas pipeline 300 connected to the outlet of the venturi tube 4 through a premixing fan 5, wherein the premixing fan 5 can be an explosion-proof fan; the air inlet of the surface burner body 7 is connected with the fully premixed gas pipeline 300, and the air outlet of the surface burner body 7 is connected to the chimney 8 through the tail gas discharge pipeline 400; an air inlet distributor 71 and a porous support plate 72 are arranged in the surface burner body 7, an air inlet of the surface burner body 7, the air inlet distributor 71, the porous support plate 72, a plurality of igniters (not shown in the figure) and an air outlet of the surface burner body 7 are sequentially arranged from bottom to top, a gas combustion channel is formed in the surface burner body 7, and the air inlet distributor 71 is used for enabling a premixed airflow field to be uniformly distributed on the lower side of the porous support plate 72; the output of controller 9 respectively with set up the second pneumatic valve B on fresh air pipeline 100, the third pneumatic valve C of setting on contaminated gas pipeline 200, and the converter of setting in premixing fan 5 is connected, controller 9 can adopt prior art's PLC controller, the switch and the aperture of second pneumatic valve B and third pneumatic valve C are controlled by the PLC controller, the rotational speed of premixing fan 5 is controlled by the PLC controller, based on the PLC technique, controller 9 can be according to the operation of presetting procedure automatic control whole device, including operation on-off control, valve flow control etc.. The controller 9 may be provided with an electronic screen for checking, manually controlling, changing parameters, etc. the operation of the whole device, and is also convenient for human-computer interaction.
The porous supporting plate 72 comprises a fixed porous layer 721 and floating valves 722, wherein the floating valves 722 are arranged in the openings of the fixed porous layer 721 in a matching way, so that a plurality of floating valves 722 are uniformly distributed on the fixed porous layer 721. The number and size of the openings of the fixed porous layer 721 may be determined according to the number and size of the floating valves 722. Preferably, the fixed porous layer 721 is perforated as a circular hole and has an internal thread structure, and may be combined with a different form of the float valve 722. The float valve 722 includes a threaded outer housing and a replaceable float valve cap for mating with a circular bore having an internal threaded configuration. The floating valve caps have different weights, and the floating valve caps with different weights are selected according to the requirements of the type, flow rate, concentration and the like of site pollution tail gas to form different floating valve weight combinations, so that the pollution tail gas in different repair periods can be more widely treated.
The top of the porous support plate 72 is covered with a metal fiber layer 73, a plurality of igniters are uniformly distributed above the metal fiber layer 73, and the metal fiber layer 73 is used for stabilizing flame, so that the temperature is uniformly distributed, and high-temperature NO caused by local overheating is preventedXIs generated in large quantities.
A backfire detector 7a is arranged between the porous support plate 72 and the air inlet distributor 71, a fire detector 7b is arranged between the metal fiber layer 73 at the top of the porous support plate 72 and the air outlet of the surface burner body 7, and a temperature detection probe 7c is arranged in the porous support plate 72 and used for monitoring the combustion temperature of the premixed polluted tail gas and the phenomena of backfire and fire escape in the combustion process.
The full premix gas pipeline 300 is provided with a back fire check valve 6 for preventing back fire from occurring in the combustion process and causing more loss by affecting the front-stage pipeline.
The side inlet of the venturi tube 4 is connected to the fuel intake device 2 through a fuel supply pipeline 500, a first pneumatic valve a is arranged on the fuel supply pipeline 500, and the output end of the controller 9 is connected with the first pneumatic valve a. Is used for supplementing fuel when processing low-concentration organic pollution tail gas and stabilizing the surface fire of metal fiber, and the fuel supplemented by the fuel gas inlet device 2 is CH4、C3H6When the combustible gas is equal, the controller 9 controls the opening and closing of the first pneumatic valve A so as to control the supplementary flow of the combustible gas.
The fresh air pipeline 100 is provided with an air flow meter a, the output end of the air flow meter a is connected with the input end of the controller 9, the controller 9 controls the fresh air inlet amount through the second pneumatic valve B and the air flow meter a, and the fresh air inlet amount is used for supplementing the oxygen content in the premixed gas when the high-concentration organic gas is treated.
The fresh air pipeline 100 is connected to a fresh air blower 1, and a fresh air filter element 3 is arranged at an air outlet of the fresh air blower 1 and used for conveying fresh air.
The polluted gas pipeline 200 is provided with a multifunctional detection probe b for the concentration, the flow and the pressure of the air inlet organic matter and an oxygen content probe c, and the output ends of the multifunctional detection probe b for the concentration, the flow and the pressure of the air inlet organic matter and the oxygen content probe c are respectively connected with the input end of the controller 9. The multifunctional detection probe b for the concentration, flow and pressure of the intake organic matter and the oxygen content probe c are used for detecting the composition, concentration and flow of the polluted gas and feeding back the detection data to the controller 9.
The tail gas discharge pipeline 400 is provided withIs provided with an organic gas detector d, CO and CO2Detectors e, NOXDetector f and exhaust gas O2Detector g, organic gas detector d, CO and CO2Detectors e, NOXDetector f and exhaust gas O2The output terminals of the detector g are connected to the input terminals of the controller 9, respectively. Organic gas detectors d, CO and CO2Detectors e, NOXThe detector f is used for detecting gas combustion rate, tail gas quality detection and O2The detector g is used for adjusting the premixed air distribution.
The utility model discloses combine the respective advantage of lean burn premix combustion technique and flameless combustion technique, premix combustion means before the fuel mixture ignites, fuel and oxidant mix completely on the molecular level. Because premixed combustion is not carried out in a diffusion mode, a fuel mixture excess air system is uniformly distributed and has high burnout speed, and combustion temperature can be controlled by controlling excess air, so that thermal NO is reducedXThe rate is generated.
The utility model discloses cover metal fiber layer 73 at the top of porous backup pad 72, the gas air mixture flow direction surface burner body 7's of the homogeneous mixing head in advance, make premixed gas burn at the even metal fiber layer 73's of gas permeability superficial layer through some firearm, its raw materials component, flow, concentration accommodation are big, and can show CO and NO among the reduction combustion products and burnXAnd (4) content.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, therefore, any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (10)
1. The utility model provides a surface combustion device for tail gas treatment in contaminated site restoration which characterized by: comprising a premixing assembly, a surface burner body (7) and a controller (9); the premixing assembly comprises a Venturi tube (4), a fresh air pipeline (100) connected to one inlet of the Venturi tube (4), a polluted gas pipeline (200) connected to the other inlet of the Venturi tube (4), and a fully premixed gas pipeline (300) connected to the outlet of the Venturi tube (4) through a premixing fan (5); the air inlet of the surface burner body (7) is connected with the fully premixed gas pipeline (300), and the air outlet of the surface burner body (7) is connected to the chimney (8) through the tail gas discharge pipeline (400); an air inlet distributor (71) and a porous support plate (72) are arranged in the surface burner body (7), an air inlet of the surface burner body (7), the air inlet distributor (71), the porous support plate (72), a plurality of igniters and air outlets of the surface burner body (7) are sequentially arranged from bottom to top, and a gas combustion channel is formed in the surface burner body (7); the output end of the controller (9) is respectively connected with a second pneumatic valve arranged on the fresh air pipeline (100), a third pneumatic valve arranged on the polluted gas pipeline (200) and a frequency converter arranged in the premixing fan (5).
2. The surface combustion apparatus for tail gas treatment in contaminated site remediation of claim 1, further comprising: the porous supporting plate (72) consists of a fixed porous layer (721) and floating valves (722), wherein the floating valves (722) are installed in the open pores of the fixed porous layer (721) in a matching way, so that a plurality of floating valves (722) are uniformly distributed on the fixed porous layer (721).
3. The surface combustion apparatus for tail gas treatment in contaminated site remediation according to claim 1 or 2, wherein: the top of the porous supporting plate (72) is covered with a metal fiber layer (73), and a plurality of igniters are uniformly distributed above the metal fiber layer (73).
4. The surface combustion apparatus for tail gas treatment in contaminated site remediation of claim 1, further comprising: a backfire detector (7a) is arranged between the porous support plate (72) and the air inlet distributor (71), a fire detector (7b) is arranged between the metal fiber layer (73) at the top of the porous support plate (72) and the air outlet of the surface burner body (7), and a temperature detection probe (7c) is arranged in the porous support plate (72).
5. The surface combustion apparatus for tail gas treatment in contaminated site remediation of claim 1, further comprising: and a tempering check valve (6) is arranged on the full premix gas pipeline (300).
6. The surface combustion apparatus for tail gas treatment in contaminated site remediation of claim 1, further comprising: the lateral line inlet of the Venturi tube (4) is connected to the fuel air inlet device (2) through a fuel supplement pipeline (500), a first pneumatic valve is arranged on the fuel supplement pipeline (500), and the output end of the controller (9) is connected with the first pneumatic valve.
7. The surface combustion apparatus for tail gas treatment in contaminated site remediation of claim 1, further comprising: an air flow meter is arranged on the fresh air pipeline (100), and the output end of the air flow meter is connected with the input end of the controller (9).
8. The surface combustion apparatus for tail gas treatment in contaminated site remediation of claim 1 or 7, further comprising: the fresh air pipeline (100) is connected to a fresh air fan (1), and a fresh air filter element (3) is arranged at an air outlet of the fresh air fan (1).
9. The surface combustion apparatus for tail gas treatment in contaminated site remediation of claim 1, further comprising: the multifunctional detection probe for the concentration, the flow and the pressure of the air-intake organic matter and the oxygen content probe are arranged on the polluted gas pipeline (200), and the output ends of the multifunctional detection probe for the concentration, the flow and the pressure of the air-intake organic matter and the oxygen content probe are respectively connected with the input end of the controller (9).
10. The surface combustion apparatus for tail gas treatment in contaminated site remediation of claim 1, further comprising: the tail gas emission pipeline (400) is provided with an organic gas detector, CO and CO2Detector, NOXDetector and exhaust gas O2Detector, organic gas detector, CO and CO2Detector, NOXDetector and exhaust gas O2The output ends of the detectors are respectively connected with the input end of the controller (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022619547.3U CN213630449U (en) | 2020-11-13 | 2020-11-13 | Surface combustion device for tail gas treatment in contaminated site remediation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022619547.3U CN213630449U (en) | 2020-11-13 | 2020-11-13 | Surface combustion device for tail gas treatment in contaminated site remediation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213630449U true CN213630449U (en) | 2021-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022619547.3U Active CN213630449U (en) | 2020-11-13 | 2020-11-13 | Surface combustion device for tail gas treatment in contaminated site remediation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213630449U (en) |
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2020
- 2020-11-13 CN CN202022619547.3U patent/CN213630449U/en active Active
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| TR01 | Transfer of patent right |
Effective date of registration: 20240618 Address after: Room 101, 4th Floor, Building 1, No. 10 Yongchang East Fourth Road, Beijing Economic and Technological Development Zone, Chaoyang District, Beijing, 100022 Patentee after: Senteshixing Environmental Protection Technology Co.,Ltd. Country or region after: China Address before: 201306 building C, No. 888, Huanhu West 2nd Road, Lingang New District, China (Shanghai) pilot Free Trade Zone, Pudong New Area, Shanghai Patentee before: China Construction Eighth Bureau Environmental Protection Technology Co.,Ltd. Country or region before: China |
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Address after: 100176 Room 101, floor 4, building 1, courtyard 10, Yongchang East Fourth Road, Beijing Economic and Technological Development Zone, Daxing District, Beijing Patentee after: Senteshixing Environmental Protection Technology Co.,Ltd. Country or region after: China Address before: Room 101, 4th Floor, Building 1, No. 10 Yongchang East Fourth Road, Beijing Economic and Technological Development Zone, Chaoyang District, Beijing, 100022 Patentee before: Senteshixing Environmental Protection Technology Co.,Ltd. Country or region before: China |