CN104096449B - Technology for compressing petroleum gas in gas production manner for vehicle loading and ship loading - Google Patents
Technology for compressing petroleum gas in gas production manner for vehicle loading and ship loading Download PDFInfo
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- CN104096449B CN104096449B CN201410330906.XA CN201410330906A CN104096449B CN 104096449 B CN104096449 B CN 104096449B CN 201410330906 A CN201410330906 A CN 201410330906A CN 104096449 B CN104096449 B CN 104096449B
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Abstract
The invention relates to a technology for compressing petroleum gas in a gas production manner for vehicle loading and ship loading. The technology comprises activated carbon adsorption towers A and B. Petroleum gas passes through gas inlet pipelines and is conveyed to the activated carbon adsorption towers A and B in turns via gas inlet valves on the activated carbon adsorption towers A and B, the petroleum gas which is adsorbed by the activated carbon adsorption towers is adsorbed into a vacuum pump separating tank in turns by a vacuum pump through discharge valves, a peroxy concentration analyzer and a hydrocarbon chemical combination concentration analyzer are arranged at the position of a discharge outlet of the vacuum pump separating tank, the petroleum gas which is analyzed by the analyzer to meet the standards is conveyed into a compressor via the gas inlet valves, and the petroleum gas which does not meet the standards is conveyed back to the gas inlet pipelines through the gas discharge valves and a disqualified gas flow return pipeline; the petroleum gas which is compressed via the compressor subjected to heat exchange via a heat exchanger is conveyed into a liquefied gas separating tank, water in the liquefied gas separating tank is separated to be discharged outside, and the petroleum gas is conveyed into a liquefied gas storage tank through a liquefied gas conveying pump. The system can be used for effectively recycling hydrocarbons in the petroleum gas.
Description
Technical field
The present invention relates to organic exhaust gas recovery and utilization technology is and in particular to entrucking shipment oil gas system is compressed oil by one kind
Gas technique.
Background technology
It is directed to the efficient recovery technology of the Hydrocarbon of oil gas at present both at home and abroad, mainly add absorption using activated carbon adsorption
Technique, condensation process, film adds absorption technique.
Activated carbon adsorption absorption technique needs to use absorbent, cannot use in the occasion not having absorbent.
Condensation recovery process has a high energy consumption, the feature of the easy secondary volatilization of the low temperature oil product of recovery.
Film adds absorption technique and needs also exist for using absorbent, cannot use in the occasion not having absorbent.
Content of the invention
The purpose of the present invention is, the problem existing for prior art, provide a kind of being capable of carbon in efficient recovery oil gas
Hydrogen compound, without absorbent and cryogenic refrigeration, reclaims Hydrocarbon and can be made into the compression oil gas meeting Standard
Body and store a kind of will reclaim entrucking or shipment oil gas makes the compression technique of oil gas and system.
For achieving the above object, the technical solution used in the present invention is：A kind of entrucking shipment oil gas pressure is provided
Contracting oil gas technique is it is characterised in that described technique is included at least provided with two activated carbon adsorber A being connected in parallel and activity
Charcoal adsorption tower B, the oil gas discharged during entrucking or shipment is entered through first on activated carbon adsorber A by air inlet pipeline
The second air intake valve on air valve and activated carbon adsorber B sends into activated carbon adsorber A and activated carbon adsorber respectively in turn
B, is tightly held by activated carbon the oil gas after tower absorption and passes through the first outlet valve on activated carbon adsorber A and activated carbon adsorber B
On the second outlet valve be drawn in vacuum pump knockout drum by vacuum pump in turn respectively, set in the discharge outlet of vacuum pump knockout drum
It is equipped with peroxide concentration analyzer and nytron concentration analyzer, divide with nytron concentration analyzer through oxygen concentration analyser
Oil gas after analysis standard compliant by the 3rd air intake valve send into compressor compresses, non-compliant by the 3rd aerofluxuss
Valve and unqualified air-flow return line send back to the air inlet pipeline of oil gas；Oil gas after compressor compression is changed by heat exchanger
It is sent in liquefied gas knockout drum after heat, oil gas separates water in liquefied gas knockout drum and discharges, oil gas is passed through liquid
Activating QI conveying is pumped in liquefied gas storage tank.
Wherein preferably technical scheme is, described activated carbon adsorber A and activated carbon adsorber B alternating sorbent oil gas,
Alternately it is spaced apart 15～20 minutes and once switched.
Further preferred technical scheme is that described oil gas conformance with standard should meet oxygen concentration for oil gas simultaneously and be less than
6.5%, the condition that hydrocarbon concentration is more than 35%.
Further preferred technical scheme also has, and the oil temperature of oil liquefied gas is down to 32 degree or less by described heat exchanger
When, just petroleum liquid fossil pneumatic transmission is entered knockout drum.
For achieving the above object, another technical solution used in the present invention is：A kind of entrucking shipment oil is provided
Gas system compression gas systems are it is characterised in that described system is included at least provided with two activated carbon adsorber A being connected in parallel
With activated carbon adsorber B, entrucking or shipment during discharge oil gas pass through air inlet pipeline respectively with activated carbon adsorber A on
The first air intake valve and activated carbon adsorber B on second air intake valve connect, the first outlet valve on activated carbon adsorber A
It is connected with vacuum pump, vacuum pump knockout drum successively with after the second outlet valve parallel connection on activated carbon adsorber B, separate in vacuum pump
The discharge outlet of tank has been arranged in parallel peroxide concentration analyzer and nytron concentration analyzer, in the discharging of vacuum pump knockout drum
Also it has been sequentially connected in series the 3rd air intake valve and compressor at mouthful, be also connected in parallel in the discharge outlet of vacuum pump knockout drum
3rd air bleeding valve and unqualified air-flow return line, one end of unqualified air-flow return line is connected in parallel on air inlet pipeline；Compression
Machine outfan is connected with the input of heat exchanger, and the outfan of device heat exchange is connected with the input of liquefied gas knockout drum, in liquefaction
Gas knockout drum is provided with drain valve, and liquefied gas knockout drum is provided with the input connecting pipe with liquefied gas delivery pump, liquefied gas
The outfan of delivery pump is connected with liquefied gas storage tank.
Wherein preferably technical scheme is that described peroxide concentration analyzer and nytron concentration analyzer are connected in parallel
On the analysis transfer pipeline of the oil gas between vacuum pump knockout drum and the 3rd air intake valve, described 3rd air bleeding valve is also connected in parallel on
On analysis transfer pipeline.
Preferably technical scheme also has, and is respectively equipped with the in the upper end of described activated carbon adsorber A and activated carbon adsorber B
After one air bleeding valve and second row air valve, first row air valve and second row air valve are connected in parallel by pipeline, will be lived by exhaustor
Property charcoal adsorption tower absorption after unnecessary light gas enter air.
Preferably technical scheme also has, and is connected with vacuum blowback between described vacuum pump knockout drum and the entrance of vacuum pump
Pressure pipeline and vacuum medium reflux pipeline.
Preferably technical scheme also has, and passes through on-condensible gas return duct between described liquefied gas knockout drum and air inlet pipeline
It is connected with decompressor.
Further preferred technical scheme also has, described first air intake valve, the second air intake valve, the 3rd air intake valve,
First outlet valve, the second outlet valve, the 3rd air bleeding valve, first row air valve and second row air valve are electromagnetic valve, by described electromagnetism
Valve, vacuum pump, compressor and liquefied gas delivery pump are all connected with Programmable Logic Controller.
Compared with prior art, the invention has the beneficial effects as follows：Recovery entrucking or shipment oil gas are made compression stone by this
Hydrocarbon in oil gas can be reclaimed and be changed into valuable product, make exhaust of oil dense by the technique of oil gas and system completely
Degree<25g/m3, efficiency of oil ＆ gas processing reaches 95%, and produces the compression oil gas meeting Standard.And can be effective
Reclaim the Hydrocarbon in oil gas, without absorbent and cryogenic refrigeration, reclaim Hydrocarbon and can be made into meet GB will
The compression petroleum gas asked simultaneously stores.
Brief description
Fig. 1 receives entrucking for the present invention and loads the system diagram that oil gas system compresses oil gas onto ship.
In figure：1- activated carbon adsorber A, 2- activated carbon adsorber B, 3- air inlet pipeline, 4- vacuum pump, 5- vacuum pump separates
Tank, 6- compressor, 7- liquefied gas knockout drum, 8- liquefied gas delivery pump, 9- liquefied gas storage tank, 10- vacuum pump back pressure pipeline,
11- vacuum medium reflux pipeline, 12- on-condensible gas return duct, 13- decompressor, 14- unqualified air-flow return line, 15- peroxide is dense
Degree analyser, 16- nytron concentration analyzer, 17- heat exchanger, 18- drain valve, 19- first air intake valve, 20- first goes out
Material valve, 21- second air intake valve, 22- second outlet valve, 23- the 3rd air intake valve, 24- the 3rd air bleeding valve, 25- first exhaust
Valve, 26- second row air valve.
Specific embodiment
As shown in figure 1, the present invention is a kind of entrucking shipment oil gas system compression oil gas technique, this technique includes at least setting
Put two activated carbon adsorber A1 being connected in parallel and activated carbon adsorber B2, the oil gas that will discharge during entrucking or shipment
By air inlet pipeline 3 through the second intake valve on the first air intake valve 19 and activated carbon adsorber B2 on activated carbon adsorber A1
Door 21 sends into activated carbon adsorber A1 and activated carbon adsorber B2 respectively in turn, is tightly held by activated carbon the oil gas after tower absorption and leads to
The second outlet valve 22 crossed on the first outlet valve 20 and the activated carbon adsorber B2 on activated carbon adsorber A1 is distinguished in turn by true
Empty pump 4 is drawn in vacuum pump knockout drum 5, and the discharge outlet of vacuum pump knockout drum 5 is provided with peroxide concentration analyzer 15 He
Nytron concentration analyzer 16, the oil gas symbol after oxygen concentration analyser 15 with nytron concentration analyzer 16 analysis
Compressor 6 sent into by the 3rd air intake valve 23 the compressing of standardization, non-compliant by the 3rd air bleeding valve 24 and do not conform to
Lattice air-flow return line 14 sends back to the air inlet pipeline 3 of oil gas；Oil gas after compressor 6 compression passes through heat exchanger 17 heat exchange
After be sent in liquefied gas knockout drum 7, oil gas separates water in liquefied gas knockout drum 7 and discharges, by oil gas pass through liquid
Activating QI delivery pump 8 is sent in liquefied gas storage tank 9.
Preferred embodiment is in the present invention, described activated carbon adsorber A1 and activated carbon adsorber B2 alternating sorbent
Oil gas, is alternately spaced apart 15～20 minutes and is once switched.
Further preferred embodiment is in the present invention, and described oil gas conformance with standard should meet for oil gas simultaneously
Oxygen concentration is less than 6.5%, the condition that hydrocarbon concentration is more than 35%.
Further preferred embodiment also has in the present invention, and the oil temperature of petroleum liquid fossil gas is dropped by described heat exchanger 17
During to 32 degree or less, just petroleum liquid fossil pneumatic transmission is entered knockout drum.
Another technical solution used in the present invention is：There is provided a kind of entrucking to load onto ship, oil gas system compresses oil gas is
System, this system is included at least provided with two activated carbon adsorber A1 being connected in parallel and activated carbon adsorber B2, entrucking or shipment
During discharge oil gas pass through air inlet pipeline 3 respectively with activated carbon adsorber A1 on the first air intake valve 19 and activated carbon
The second air intake valve 21 on adsorption tower B2 connects, the first outlet valve 20 on activated carbon adsorber A1 and activated carbon adsorber B2
On the second outlet valve 22 parallel connection after be connected with vacuum pump 4, vacuum pump knockout drum 5 successively, in the discharging opening of vacuum pump knockout drum 5
Place has been arranged in parallel peroxide concentration analyzer 15 and nytron concentration analyzer 16, in the discharge outlet of vacuum pump knockout drum 5
Also it has been sequentially connected in series the 3rd air intake valve 23 and compressor 6, be also connected in parallel in the discharge outlet of vacuum pump knockout drum 5
3rd air bleeding valve 24 and unqualified air-flow return line 14, one end of unqualified air-flow return line 14 is connected in air inlet pipeline 3 in parallel
On；Compressor 6 outfan is connected with the input of heat exchanger 17, the input of the outfan of heat exchanger 17 and liquefied gas knockout drum 7
End connects, and is provided with drain valve 18, liquefied gas knockout drum 7 is provided with the input with liquefied gas delivery pump 8 on liquefied gas knockout drum 7
End connecting pipe, the outfan of liquefied gas delivery pump 8 is connected with liquefied gas storage tank 9.
Preferred embodiment is in the present invention, described peroxide concentration analyzer 15 and nytron concentration analyzer 16
It is connected in parallel on the analysis transfer pipeline of the oil gas between vacuum pump knockout drum 5 and the 3rd air intake valve 23, the described 3rd
Air bleeding valve 24 is also connected in parallel on analysis transfer pipeline.
Preferred embodiment also has in the present invention, upper in described activated carbon adsorber A1 and activated carbon adsorber B2
End is respectively equipped with first row air valve 25 and second row air valve 26, and first row air valve 25 and second row air valve 26 are in parallel even by pipeline
After connecing, after being adsorbed activated carbon adsorber by exhaustor, unnecessary light gas enter air.
Preferred embodiment also has in the present invention, connects between described vacuum pump knockout drum 5 and the entrance of vacuum pump 4
It is connected to vacuum pump back pressure pipeline 10 and vacuum medium reflux pipeline 11.
Preferred embodiment also has in the present invention, passes through not between described liquefied gas knockout drum 7 and air inlet pipeline 3
Solidifying gas backstreaming pipe 12 is connected with decompressor 13.
Further preferred embodiment also has in the present invention, described first air intake valve 19, the second air intake valve 21,
3rd air intake valve 23, the first outlet valve 20, the second outlet valve 22, the 3rd air bleeding valve 24, first row air valve 25 and second exhaust
Valve 26 is electromagnetic valve, by described electromagnetic valve, vacuum pump 4, compressor 6 and liquefied gas delivery pump 8 all with Programmable Logic Controller even
Connect.
A kind of by reclaim entrucking or shipment oil gas make compression oil gas technical process as follows：
1st, oil gas sends into the activated carbon absorption tower A1 and activated carbon absorption tower B2 of gas recovery system for oil through gas circuit pipeline 3, lives
Hydrocarbon in property charcoal adsorption tower primary attachment oil gas.Two activated carbon beds alternations, oil gas initially enters activated carbon
Adsorption tower A1, the first air intake valve 19 and first row air valve 25 are opened, and the first outlet valve 20, the second air intake valve 21, second go out
Material valve 22 cuts out.The first air intake valve 19, the second outlet valve 22, second row air valve 26 after activated carbon absorption tower A1 adsorption saturation
Close, the first outlet valve 20, the second air intake valve 21, second row air valve 26 are opened.Activated carbon adsorber B2 carries out oil gas absorption,
Activated carbon adsorber A1 carries out oil gas desorbing.The first outlet valve 20, the second intake valve after activated carbon absorption tower B2 adsorption saturation
Door 21, second row air valve 26 are closed, and the first air intake valve 19, first row air valve 25, the second outlet valve 22 are opened, activated carbon adsorption
Tower A carries out oil gas absorption, and activated carbon absorption tower B carries out oil gas desorbing.Two adsorption tower switching cycles are 15-20 minute.
2nd, oil gas desorbing is implemented by vacuum pump 4, the adsorption tower extracting vacuum to adsorption saturation for the vacuum pump 4, and oil gas is first
First send into vacuum pump knockout drum 5, the working solution of vacuum pump 4 is sent back to vacuum pump by vacuum pump medium back flow line 11 after separation.
For ensureing vacuum pump 4 security set vacuum back pressure line 10, convey a small amount of stripping gas to vacuum pump inlet, prevent vacuum pump super negative
Lotus.
3rd, the oil gas in vacuum pump knockout drum 5 enters through oxygen concentration analyser 15 and nytron (HC) concentration analyzer 16
Row analysis, if the oil gas in vacuum pump knockout drum 5 can not meet oxygen concentration and be less than 6.5% simultaneously, hydrocarbon concentration is big
In 35% condition, then open the 3rd air bleeding valve 24 and desorbing oil gas is sent back to device portal by unqualified gas return wire 14.Enter
Row adsorbs again, to improve the hydrocarbon concentration in stripping gas, and reduces oxygen content.If oxygen concentration is less than 6.5%, carbon
Hydrocarbon concentration is more than 35%, then open the 3rd air intake valve 23 and oil gas is sent into compressor 6.
4th, be admitted to compressor 6 oil gas be compressed into 8 kilograms after, entered heat exchanger 17 and be cooled to 32 degree.Send into liquefaction
Gas knockout drum 7.
5th, fixed gas sends device portal back to by fixed gas return wire 12, arranges decompressor 13 to adjust it on circuit simultaneously
Pressure is identical with entrance oil gas.
6th, because containing water in oil gas, the water in liquefaction gas separating device 7 is discharged from the drain valve 18 of lower end.
7th, the liquefied petroleum gas of high-quality is delivered to liquefied gas storage tank 9 by liquefied gas delivery pump 8 and is stored.
The invention is not restricted to above-mentioned embodiment, made any to above-mentioned embodiment aobvious of those skilled in the art and
The improvement being clear to or change, all without beyond the design of the present invention and the protection domain of claims.
Claims (5)
1. a kind of entrucking shipment oil gas system compression oil gas technique is it is characterised in that described technique is included at least provided with two
The activated carbon adsorber A being connected in parallel and activated carbon adsorber B, the oil gas discharged during entrucking or shipment is passed through air inlet
Pipeline takes turns streaming respectively through the second air intake valve on the first air intake valve and activated carbon adsorber B on activated carbon adsorber A
Enter activated carbon adsorber A and activated carbon adsorber B, be tightly held by activated carbon the oil gas after tower absorption and pass through activated carbon adsorber A
On the first outlet valve and activated carbon adsorber B on the second outlet valve in turn vacuum pump knockout drum is drawn into by vacuum pump respectively
Interior, the discharge outlet of vacuum pump knockout drum is provided with peroxide concentration analyzer and nytron concentration analyzer, dense through peroxide
Degree analyser is compressed with standard compliant the feeding by the 3rd air intake valve of oil gas after the analysis of nytron concentration analyzer
Machine compresses, the non-compliant air inlet pipeline sending back to oil gas by the 3rd air bleeding valve and unqualified air-flow return line；Warp
Oil gas after compressor compresses is sent in liquefied gas knockout drum after heat exchanger heat exchange, and oil gas is in liquefied gas knockout drum
Separate water into and discharge, oil gas is pumped in liquefied gas storage tank by liquefied gas conveying, described activated carbon adsorber A
With activated carbon adsorber B alternating sorbent oil gas, alternately it is spaced apart 15～20 minutes and is once switched, described oil gas symbol
Standardization should meet oxygen concentration for oil gas simultaneously and be less than 6.5%, the condition that hydrocarbon concentration is more than 35%, described heat exchange
When the oil temperature of oil liquefied gas is down to 32 degree by device, just petroleum liquid fossil pneumatic transmission is entered knockout drum.
2. a kind of entrucking loads the system of oil gas system compression oil gas onto ship it is characterised in that described system is included at least provided with two
The oil gas discharged during the individual activated carbon adsorber A being connected in parallel and activated carbon adsorber B, entrucking or shipment passes through air inlet
Pipeline is connected with the second air intake valve on the first air intake valve and activated carbon adsorber B on activated carbon adsorber A respectively, lives
Property charcoal adsorption tower A on the first outlet valve and activated carbon adsorber B on second outlet valve parallel connection after successively with vacuum pump, vacuum
Pump knockout drum connects, and has been arranged in parallel peroxide concentration analyzer in the discharge outlet of vacuum pump knockout drum and nytron concentration is divided
Analyzer, has also been sequentially connected in series the 3rd air intake valve and compressor in the discharge outlet of vacuum pump knockout drum, has divided in vacuum pump
Also it is connected in parallel to the 3rd air bleeding valve and unqualified air-flow return line, one end of unqualified air-flow return line from the discharge outlet of tank
It is connected in parallel on air inlet pipeline；Compressor output end is connected with the input of heat exchanger, the outfan of heat exchanger and liquefied gas
The input of knockout drum connects, and is provided with drain valve on liquefied gas knockout drum, and liquefied gas knockout drum is provided with and liquefied gas conveying
The input connecting pipe of pump, the outfan of liquefied gas delivery pump is connected with liquefied gas storage tank；
Described peroxide concentration analyzer and nytron concentration analyzer are connected in vacuum pump knockout drum and the 3rd intake valve in parallel
On the analysis transfer pipeline of oil gas between door, described 3rd air bleeding valve is also connected in parallel on analysis transfer pipeline；
It is connected with vacuum pump back pressure pipeline and vacuum medium return duct between described vacuum pump knockout drum and the entrance of vacuum pump
Line.
3. entrucking as claimed in claim 2 shipment oil gas system compression gas systems are it is characterised in that in described activated carbon
The upper end of adsorption tower A and activated carbon adsorber B is respectively equipped with first row air valve and second row air valve, first row air valve and second row
After air valve is connected in parallel by pipeline, after being adsorbed activated carbon adsorber by exhaustor, unnecessary light gas enter air.
4. entrucking as claimed in claim 2 shipment oil gas system compression gas systems are it is characterised in that in described liquefied gas
Between knockout drum and air inlet pipeline, decompressor is connected with by on-condensible gas return duct.
5. entrucking as claimed in claim 2 or claim 3 shipment oil gas makes compression gas systems it is characterised in that described the
One air intake valve, the second air intake valve, the 3rd air intake valve, the first outlet valve, the second outlet valve, the 3rd air bleeding valve, first row
Air valve and second row air valve are electromagnetic valve, by described electromagnetic valve, vacuum pump, compressor and liquefied gas delivery pump all with programmable
Controller connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410330906.XA CN104096449B (en) | 2014-07-11 | 2014-07-11 | Technology for compressing petroleum gas in gas production manner for vehicle loading and ship loading |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410330906.XA CN104096449B (en) | 2014-07-11 | 2014-07-11 | Technology for compressing petroleum gas in gas production manner for vehicle loading and ship loading |
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| Publication Number | Publication Date |
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| CN104096449A CN104096449A (en) | 2014-10-15 |
| CN104096449B true CN104096449B (en) | 2017-02-15 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107961642B (en) * | 2017-12-01 | 2020-12-01 | 河北东厚环保科技有限公司 | Oil gas recovery system based on high-flux nano adsorption bed |
| CN107970747B (en) * | 2017-12-01 | 2021-01-29 | 河北东厚环保科技有限公司 | Oil gas automatic recovery system capable of being remotely monitored |
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| JPS59107916A (en) * | 1982-12-07 | 1984-06-22 | Kyodo Sanso Kk | Production of carbon monoxide |
| CN2635188Y (en) * | 2003-07-07 | 2004-08-25 | 湖北楚冠实业股份有限公司 | Active earbon adsorption and recovering liquified gas device |
| CN102512906A (en) * | 2011-12-13 | 2012-06-27 | 上海神明控制工程有限公司 | Energy-saving and environment-protecting oil gas recovering and processing method and device |
| CN102764563A (en) * | 2012-07-27 | 2012-11-07 | 海湾环境科技（北京）股份有限公司 | Adsorptive compression-type oil gas recovery processing system and recovery processing technique thereof |
| CN203916410U (en) * | 2014-07-11 | 2014-11-05 | 海湾环境科技（北京）股份有限公司 | A kind of entrucking shipment gas superzapping contracting oil gas system |
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2014
- 2014-07-11 CN CN201410330906.XA patent/CN104096449B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59107916A (en) * | 1982-12-07 | 1984-06-22 | Kyodo Sanso Kk | Production of carbon monoxide |
| CN2635188Y (en) * | 2003-07-07 | 2004-08-25 | 湖北楚冠实业股份有限公司 | Active earbon adsorption and recovering liquified gas device |
| CN102512906A (en) * | 2011-12-13 | 2012-06-27 | 上海神明控制工程有限公司 | Energy-saving and environment-protecting oil gas recovering and processing method and device |
| CN102764563A (en) * | 2012-07-27 | 2012-11-07 | 海湾环境科技（北京）股份有限公司 | Adsorptive compression-type oil gas recovery processing system and recovery processing technique thereof |
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Effective date of registration: 20190327 Address after: 065000 East of Baiqiang Road and North of Changxiang South Road, Guangyang Economic Development Zone, Langfang City, Hebei Province Patentee after: Langfang Gulf Environmental Protection Technology Co., Ltd. Address before: Room 5018, Beijing International Conference Center, No. 8 Beichen East Road, Chaoyang District, Beijing 100101 Patentee before: Bay Environmental Technology (Beijing) Corp. |
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Effective date of registration: 20220413 Address after: 013, 1f, building 91, No. 7, Jiuxianqiao North Road, Chaoyang District, Beijing 100101 Patentee after: BAY ENVIRONMENTAL TECHNOLOGY (BEIJING) Corp. Address before: 065000 East of Baiqiang Road and North of Changxiang South Road, Guangyang Economic Development Zone, Langfang City, Hebei Province Patentee before: Langfang Gulf Environmental Protection Technology Co.,Ltd. |