CN207143179U - A kind of device of the three-phase regeneration of lighter hydrocarbons desulfurization alkali lye - Google Patents
A kind of device of the three-phase regeneration of lighter hydrocarbons desulfurization alkali lye Download PDFInfo
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- CN207143179U CN207143179U CN201720543535.2U CN201720543535U CN207143179U CN 207143179 U CN207143179 U CN 207143179U CN 201720543535 U CN201720543535 U CN 201720543535U CN 207143179 U CN207143179 U CN 207143179U
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- alkali
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- knockout drum
- regeneration
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Abstract
The utility model discloses the device that a kind of three-phase of lighter hydrocarbons desulfurization alkali lye regenerates, including fiber film contactor and alkali liquid regeneration knockout drum；Interlude is filled with liquid membrane contactor fiber inner core inside fiber film contactor, and internal top is provided with liquid distributor；The upper end side of fiber film contactor is connected to alkali lye filter, and alkali lye filter is circumscribed with compressed air hose and desulfurization alkali liquor pipe, and the top of fiber film contactor is circumscribed with circulation solvent pipe and low-sulfur solvent pipe for conveying solvent successively；Alkali liquid regeneration knockout drum is circumscribed with successively at the top of the tank body of alkali liquid regeneration knockout drum divides gas bag and offgas duct；It the advantage is that：Using three-phase mass transfer apparatus of the fiber film contactor as desulfurization alkali lye, air, alkali lye and solvent contact fully in fiber film contactor, and three-phase mass-transfer efficiency is high, and chemical reaction and physical extraction process are all more thorough, contribute to three-phase quick separating simultaneously, mitigate three alternate mutual entrainments.
Description
Technical field
It the utility model is related to the sky that the lighter hydrocarbons desulfurization such as a kind of liquefied gas, carbon three, carbon four, light dydrocarbon, light petrol produce alkali lye
Gas aoxidizes and solvent extraction takes off the renovation process and device of disulfide；Regenerated more particularly to a kind of three-phase of lighter hydrocarbons desulfurization alkali lye
Device.
Background technology
At present, the liquefied gas of oil plant production is mostly using MDEA amine liquid extraction technique removing hydrogen sulfide, sodium hydroxide alkali
Liquid extraction technique removes mercaptan, and product such as carbon three, carbon four, light dydrocarbon etc. is meet follow-up deep processing requirement after liquefied gas qi leel, very
Multiple enterprises use the further deep desulfuration of caustic extraction technology, also Some Enterprises by gasoline be cut into it is light, weigh two components, light vapour
Oil uses caustic extraction technology removal of mercaptans, and gasoline, naphtha, condensate can also use alkali cleaning technology to carry out desulfuration-deodorization.
Lighter hydrocarbons lye extraction desulfurization process is primarily present following chemical reaction：
RSH + NaOH → NaSR + H2O
H2S + 2NaOH → Na2S+ 2H2O
The NaSR and Na2S of generation are dissolved in alkali lye, with the extension of desulfurization time, NaSR and Na2S in alkali lye
After concentration reaches certain level, alkali lye desulphurizing ability declines, to ensure that product total sulfur is qualified, it is necessary to regularly replace alkali lye.
To reduce the discharge capacity of lighter hydrocarbons desulfurization spent lye, lighter hydrocarbons lye extraction desulfurization device generally is configured with desulfurization alkali lye oxygen
Change reclamation plant；The alkali liquor oxidized regeneration techniques principle of desulfurization is MEROX technologies, i.e., in sulfonation titanium cyanines cobalt, titanium cyanines cobalt ichthyodin, gathers
Under the catalyst existence conditions such as titanium cyanines cobalt, into alkali lye by the air of certain flow, the sulphur in oxygen and alkali lye in air
Sodium alkoxide and vulcanized sodium are reacted, and the process main chemical reactions have：
2NaSR + 1/2 O2 + H2O → 2NaOH + RSSR
2Na2S + 2O2 + H2O → Na2S2O3 + 2NaOH
Na2S2O3 + 2O2 + 2NaOH → 2Na2SO4 + H2O
To improve alkali liquor oxidized efficiency, alkali liquor oxidized at present all to use oxidizing tower mode substantially, alkali liquor oxidized tower, which is divided into, to be filled out
Expect tower and bubble tower.Packed tower is the random packing or structured packing that certain volume is loaded in tower, and alkali lye and air are filled
Droplet and bubble are cut into, so as to increase gas-liquid two-phase contact area.Bubble tower is will by the air sparger of tower bottom
Air is scattered in tiny bubble, and bubble is smaller, bigger with alkali lye contact area.
The RSSR of alkali liquor oxidized generation（Disulfide）It is difficult thoroughly to divide in above-mentioned alkali liquor oxidized tower for oiliness organic matter
From if not taking effective and removing measure, when the alkali lye is used for lighter hydrocarbons circulation desulfurization, disulfide can be stripped into lighter hydrocarbons production
In product, light hydrocarbon product total sulfur is caused to rise.Therefore, disulfide separation equipment, solvent are designed with again in existing alkali liquid regeneration technique
Anti- extractor.
Certain liquid gas sweetening alkali liquor oxidized regeneration method of house journal 200710071004.9 and device, patent
200710308071.8 a kind of oil-containing alkali liquor separation apparatus and method, and a kind of 2,012 2 0012653.8 desulfuration of liquefied gas of patent
The combined system of alcohol, described liquid gas sweetening alkali liquor oxidized regeneration techniques are bubble tower oxidation and liquefaction separation disulfide
Mode；The device and method of a kind of gasoline light fraction removal of mercaptans of the said firm patent 201210276509.x and alkali liquid regeneration, it is described
Liquid gas sweetening alkali liquor oxidized regeneration techniques be bubble tower oxidation and solvent back suction carry removing disulfide mode, it is described
Back suction carries mass transfer apparatus and uses fiber liquid film reactor.
Certain house journal 200910250279.8 it is a kind of can deeply removing total sulfur liquid hydrocarbon mercaptan removal technique, described liquid
It is that packed tower oxidation and solvent back suction carry removing disulfide mode, described filler to change desulfurization alcoholic lye oxidation regeneration techniques
Tower enters alkali lye, solvent and air simultaneously, and described filler is the immobilized active carbon bed for having sulfonation titanium cyanines Co catalysts, described
Three-phase mixture enter knockout drum carry out three phase separation.A kind of group of 200710123546.6 demercaptaning for gasoline of the said firm's patent
Technique is closed, is popularization and application of the above-mentioned patent in gasoline light fraction removal of mercaptans.
Mass transfer apparatus involved by the above-mentioned alkali liquor oxidized regeneration technology of patent is substantially alkali liquor oxidized tower, solvent back suction carries fibre
Liquid membrane contactor and settlement separation tank are tieed up, technological process is more complicated, and number of devices is more, and plant construction investment is higher；On in addition,
State in patent using solvent back suction carry removing disulfide technology, back suction carry inevitably be entrained with rear solvent it is a small amount of
Alkali lye, the alkali lye carried secretly in removing back suction extraction solvent is not referred to, if directly sending to solvent hydrodesulfurization, easily causes hydrogenation plant
Catalyst poisoning, it is likely that cause heavy losses.
Utility model content
The utility model in view of the shortcomings of the prior art, provide one kind the characteristics of utilizing fiber film contactor efficient mass transfer,
A step completes air catalytic oxidation in fiber film contactor equipment, solvent back suction puies forward removing disulfide and three phase separation three
A kind of device of the three-phase regeneration of lighter hydrocarbons desulfurization alkali lye of process.
In order to solve the above-mentioned technical problem, the utility model is addressed by following technical proposals：A kind of lighter hydrocarbons desulfurization
The device of the three-phase regeneration of alkali lye, including vertical fiber film contactor and horizontal alkali liquid regeneration knockout drum；The fibre
Interlude is filled with liquid membrane contactor fiber inner core inside dimension liquid membrane contactor, and internal top is provided with liquid distributor；Institute
The upper end side for stating fiber film contactor is connected to alkali lye filter, and the alkali lye filter is circumscribed with the compression for conveying air
Air hose and the desulfurization alkali liquor pipe for the alkali lye after the lighter hydrocarbons desulfurization of catalyst of the conveying dissolved with sulfonation titanium cyanines cobalt, the fibre
The top of dimension liquid membrane contactor is circumscribed with circulation solvent pipe and low-sulfur solvent pipe for conveying solvent successively, air, alkali lye, molten
Agent enters the liquid membrane contactor fiber inner core after being mixed in the liquid distributor；The tank body of the alkali liquid regeneration knockout drum
Inner cavity top is provided with alkali liquid regeneration knockout drum coalescing-plate, and tank inner chamber bottom is provided with alkali liquid regeneration knockout drum dividing plate, both
It is arranged in parallel, tank body is divided into area to be separated by the alkali liquid regeneration knockout drum coalescing-plate and the alkali liquid regeneration knockout drum dividing plate
With separated area；Fiber film contactor is set at the top of the tank body in the area to be separated and fixed with flange；The separated area
Tank body at the top of be circumscribed with alkali liquid regeneration knockout drum successively and divide gas bag and offgas duct.
The tank base in the area to be separated is circumscribed with alkali liquid regeneration knockout drum liquid separation bag, the alkali liquid regeneration knockout drum point
Liquid bag is circumscribed with regeneration alkali liquor pipe, regeneration lye pump and regeneration alkali lye and goes out device pipe successively.
The tank base in the separated area is circumscribed with back suction and puies forward rear solvent pipe, and the back suction puies forward rear solvent pipe and passes through solvent
Circulating pump is connected with the circulation solvent pipe.
Also include washing knockout drum, the solvent circulated in solvent pipe passes sequentially through sulfur-bearing solvent pipe, venturi mixes
After clutch and washing solvent pipe from the top injection washing knockout drum；The tank deck of the washing knockout drum is also circumscribed with fresh
Water pipe and sulfur-bearing solvent go out device pipe；Tank bottom is circumscribed with washing knockout drum liquid separation bag.
The washing knockout drum liquid separation bag is circumscribed with circulating water pipe and alkaline waste water pipe, the circulating water pipe and the literary mound
In blender dock.
The utility model compared with prior art, has the advantages that：Using fiber film contactor as desulfurization
The three-phase mass transfer apparatus of alkali lye, air, alkali lye and solvent contact fully in fiber film contactor, and three-phase mass-transfer efficiency is high,
Chemical reaction and physical extraction process all more thoroughly, while contribute to three-phase quick separating, mitigate three alternate mutual entrainments,
Sodium mercaptides, sodium sulfide content are oxidable in regeneration alkali lye can also be removed to below 100ppm to below 100ppm, disulfide content,
Back suction extraction solvent neutral and alkali content of material can be controlled in below 1ppm after washing；It is good, anti-with desulfurization alkali liquid regeneration effect
The features such as extraction solvent entrainment alkali lye content is extremely low, low equipment investment, simple technique.
Brief description of the drawings
Fig. 1 is the process chart of the utility model embodiment.
Embodiment
1 the utility model is described in further detail with embodiment below in conjunction with the accompanying drawings：Marked in figure as follows：
Fiber film contactor 1, liquid distributor 2, liquid membrane contactor fiber inner core 3, alkali liquid regeneration knockout drum 4, area to be separated 41,
Gas bag 5, alkali liquid regeneration knockout drum coalescing-plate 6, alkali liquid regeneration knockout drum dividing plate 7, alkali lye are divided in Disengagement zone 42, alkali liquid regeneration knockout drum
Regenerate knockout drum liquid separation bag 8, alkali lye filter 9, regeneration lye pump 10, solvent circulating pump 11, venturi mixer 12, washing point
Go out device pipe 17, compression sky from tank 13, washing knockout drum liquid separation bag 14, desulfurization alkali liquor pipe 15, regeneration alkali liquor pipe 16, regeneration alkali lye
Tracheae 18, offgas duct 19, low-sulfur solvent pipe 20, circulation solvent pipe 21, back suction propose rear solvent pipe 22, sulfur-bearing solvent pipe 23, washing
Solvent pipe 24, sulfur-bearing solvent go out device pipe 25, fresh water pipe 26, circulating water pipe 27, alkaline waste water pipe 28.
A kind of device of the three-phase regeneration of lighter hydrocarbons desulfurization alkali lye, including vertical fiber film contactor 1 and horizontal
Alkali liquid regeneration knockout drum 4；Interlude is filled with liquid membrane contactor fiber inner core 3, internal top inside fiber film contactor 1
It is provided with liquid distributor 2；The upper end side of fiber film contactor 1 is connected to alkali lye filter 9, and alkali lye filter 9 is circumscribed with use
Alkali lye after the compressed air hose 18 of conveying air and the lighter hydrocarbons desulfurization for conveying the catalyst dissolved with sulfonation titanium cyanines cobalt
Desulfurization alkali liquor pipe 15, the top of fiber film contactor 1 is circumscribed with circulation solvent pipe 21 for conveying solvent and low successively
Sulphur solvent pipe 20, air, alkali lye, solvent enter liquid membrane contactor fiber inner core 3 after being mixed in liquid distributor 2；Alkali lye is again
Alkali liquid regeneration knockout drum coalescing-plate 6 is provided with the top of the tank inner chamber of raw knockout drum 4, tank inner chamber bottom is provided with alkali liquid regeneration
Knockout drum dividing plate 7, both be arranged in parallel, and alkali liquid regeneration knockout drum coalescing-plate 6 and alkali liquid regeneration knockout drum dividing plate 7 split tank body
Into area 41 to be separated and separated area 42.
Fiber film contactor 1 is set at the top of the tank body in area 41 to be separated and fixed with flange, the tank body in area 41 to be separated
Bottom is circumscribed with alkali liquid regeneration knockout drum liquid separation bag 8, alkali liquid regeneration knockout drum liquid separation bag 8 be circumscribed with successively regeneration alkali liquor pipe 16,
Regeneration lye pump 10 and regeneration alkali lye go out device pipe 17.
Alkali liquid regeneration knockout drum is circumscribed with successively at the top of the tank body in separated area 42 divides gas bag 5 and offgas duct 19；It is separated
The tank base in area 42 is circumscribed with back suction and puies forward rear solvent pipe 22, and it is molten with circulating by solvent circulating pump 11 that back suction puies forward rear solvent pipe 22
Agent pipe 21 is connected.
Also include washing knockout drum 13, the solvent circulated in solvent pipe 21 passes sequentially through sulfur-bearing solvent pipe 23, venturi
Injected after blender 12 and washing solvent pipe 24 from top in washing knockout drum 13；The tank deck of washing knockout drum 13 is also circumscribed with newly
Fresh water pipe 26 and sulfur-bearing solvent go out device pipe 25；Tank bottom is circumscribed with washing knockout drum liquid separation bag 14；Wash knockout drum liquid separation bag 14
Circulating water pipe 27 and alkaline waste water pipe 28 are circumscribed with, circulating water pipe 27 docks with venturi mixer 12.
Described lighter hydrocarbons desulfurization alkali lye includes liquefied gas in the application, product such as carbon three, carbon four, carbon after liquefied gas qi leel
Five, and alkali lye caused by the lighter hydrocarbons such as light petrol depriving hydrogen sulphide and removal of mercaptans, in addition to gasoline, naphtha, chemical industry light oil, condensation
Alkali lye produced by the Light Oil Desulfurizations such as oil and deodorization.
A kind of three-phase regeneration method of lighter hydrocarbons desulfurization alkali lye, comprises the following steps：
1）, urging from the air that compressed air hose 18 flows out with the sulfonation titanium cyanines cobalt that is dissolved with flowed out from desulfurization alkali liquor pipe 15
Alkali lye is after alkali lye filter 9 slightly step mixing after the lighter hydrocarbons desulfurization of agent, then the solvent with being flowed out from circulation solvent pipe 21 is in liquid
Mix in body distributor 2, reacted subsequently into fiber film contactor 1 again；Air, alkali lye and solvent are in fiber liquid film
Fully contacted in contactor, under the catalyst action of sulfonation titanium cyanines cobalt, the oxygen in sodium mercaptides, vulcanized sodium and air in alkali lye
Gas contact and reactive chemistry reaction, generate the material such as sodium hydroxide and disulfide, sodium thiosulfate, sodium sulphate；Alkali and salt thing
Matter is dissolved in alkali lye, disulfide dissolve in a solvent, in air remaining unreacted gas phase in the form of tail gas from alkali liquid regeneration
Knockout drum top gas bag discharger, because polarity is different and certain density contrast be present, solvent is layered and stopped with alkali lye
On alkali liquid regeneration knockout drum upper strata, overflow across knockout drum internal partition and flow to solvent phase side, be pressurized by solvent circulating pump, part is molten
Agent and the low-sulfur solvent of supplement are mixed to form circulation solvent, enter fiber film contactor from contactor top, remainder is molten
Agent enters solvent water elution sulphur facility, and regeneration alkali lye is discharged from the liquid separation bag lye export of alkali liquid regeneration knockout drum bottom, through again
Lighter hydrocarbons desulfurization is sent to after raw lye pump supercharging, coalescing-plate is favorably improved three phase separating efficiency in alkali liquid regeneration knockout drum, mitigates
Three alternate mutual entrainments.
2）：Part comes from 1）Back suction carry rear sulfur-bearing solvent and mixed with recirculated water by venturi mixer, into washing
Tank, the alkali lye carried secretly in solvent is polar substances, is easily dissolved in water, because polarity is different and certain density contrast be present,
Solvent and alkaline water stratification simultaneously rest on knockout drum upper strata, go solvent hydrogenation plant former from knockout drum top solvent outlet from force feed
Batch can, alkaline water is discharged from the liquid separation bag water out of knockout drum bottom, and under venturi mixer suction, part water enters
Blender, part water remove alkaline wastewater treatment equipment from force feed, are controlled by flow from the fresh water inlet in water washing tank top simultaneously
Supplement and the fresh water for discharging the flows such as water；Back suction puies forward the alkaline matter content carried secretly in rear sulfur-bearing solvent can be by more quantity of exchanged water
To control.The mixing that back suction carries rear sulfur-bearing solvent and recirculated water can also be realized by washing pump and other types of blender.
Embodiment 1：Desulfurization alkali lye is adopted to obtain from certain company's liquid hydrocarbon desulfurization device, is tested using the inventive method, it is real
It is as follows to test result：Liquid hydrocarbon desulfurization alkali lye forms：Vulcanize na concn 0.19%wt, mercaptan na concn 1.22%wt, test alkaline stream
Measure 20Kg/h, 50-65 DEG C of operation temperature, sulfonation titanium cyanines Co catalysts content 160-200ppm；Compressed air require 3.5-4Nm3/
h；Industrial naptha circular flow 60Kg/h, solvent make-up flow 40Kg/h；Regeneration alkali lye in sodium sulfide content do not measure, sodium mercaptides
Content 27ppm, disulfide content are 45ppm, back suction extraction solvent neutral and alkali content of material 0.75ppm after washing.
Embodiment 2：Desulfurization alkali lye is adopted to obtain from certain company's liquid hydrocarbon desulfurization device, is tested using the inventive method, it is real
It is as follows to test result：Liquid hydrocarbon desulfurization alkali lye forms：Vulcanize na concn 0.03%wt, mercaptan na concn 0.43%wt, test alkaline stream
Measure 50Kg/h, 30-45 DEG C of operation temperature, sulfonation titanium cyanines Co catalysts content 100-130ppm；Compressed air require 3-3.5Nm3/
h；Industrial naptha circular flow 50Kg/h, solvent make-up flow 25Kg/h；Regeneration alkali lye in sodium sulfide content do not measure, sodium mercaptides
Content 13ppm, disulfide content are 39ppm, back suction extraction solvent neutral and alkali content of material 0.55ppm after washing.
Claims (5)
1. a kind of device of the three-phase regeneration of lighter hydrocarbons desulfurization alkali lye, including vertical fiber film contactor（1）With it is horizontal
Alkali liquid regeneration knockout drum（4）；It is characterized in that：The fiber film contactor（1）Inside interlude filled with liquid film contact
Device fiber inner core（3）, internal top is provided with liquid distributor（2）；The fiber film contactor（1）Upper end side be connected to alkali
Liquid filter（9）, the alkali lye filter（9）It is circumscribed with the compressed air hose for conveying air（18）Dissolved with for conveying
There is the desulfurization alkali liquor pipe of the alkali lye after the lighter hydrocarbons desulfurization of the catalyst of sulfonation titanium cyanines cobalt（15）, the fiber film contactor（1）
Top be circumscribed with circulation solvent pipe for conveying solvent successively（21）With low-sulfur solvent pipe（20）, air, alkali lye, solvent exist
The liquid distributor（2）Enter the liquid membrane contactor fiber inner core after middle mixing（3）；The alkali liquid regeneration knockout drum（4）
Tank inner chamber at the top of be provided with alkali liquid regeneration knockout drum coalescing-plate（6）, tank inner chamber bottom is provided with alkali liquid regeneration knockout drum
Dividing plate（7）, both be arranged in parallel, the alkali liquid regeneration knockout drum coalescing-plate（6）With the alkali liquid regeneration knockout drum dividing plate（7）
Tank body is divided into area to be separated（41）With separated area（42）；The area to be separated（41）Tank body at the top of set fiber liquid film connect
Tentaculum（1）And fixed with flange；The separated area（42）Tank body at the top of be circumscribed with alkali liquid regeneration knockout drum successively and divide gas bag
（5）And offgas duct（19）.
A kind of 2. device of the three-phase regeneration of lighter hydrocarbons desulfurization alkali lye as claimed in claim 1, it is characterised in that：It is described to be separated
Area（41）Tank base be circumscribed with alkali liquid regeneration knockout drum liquid separation bag（8）, the alkali liquid regeneration knockout drum liquid separation bag（8）Successively
It is circumscribed with regeneration alkali liquor pipe（16）, regeneration lye pump（10）Go out device pipe with regeneration alkali lye（17）.
A kind of 3. device of the three-phase regeneration of lighter hydrocarbons desulfurization alkali lye as claimed in claim 2, it is characterised in that：It is described separated
Area（42）Tank base be circumscribed with back suction and put forward rear solvent pipe（22）, the back suction puies forward rear solvent pipe（22）Pass through solvent circulating pump
（11）With the circulation solvent pipe（21）It is connected.
A kind of 4. device of the three-phase regeneration of lighter hydrocarbons desulfurization alkali lye as claimed in claim 3, it is characterised in that：Also include water
Wash knockout drum（13）, the circulation solvent pipe（21）In solvent pass sequentially through sulfur-bearing solvent pipe（23）, venturi mixer
（12）With washing solvent pipe（24）Afterwards the washing knockout drum is injected from top（13）In；The washing knockout drum（13）Tank deck
Also it is circumscribed with fresh water pipe（26）Go out device pipe with sulfur-bearing solvent（25）；Tank bottom is circumscribed with washing knockout drum liquid separation bag（14）.
A kind of 5. device of the three-phase regeneration of lighter hydrocarbons desulfurization alkali lye as claimed in claim 4, it is characterised in that：The washing point
From tank liquid separation bag（14）It is circumscribed with circulating water pipe（27）With alkaline waste water pipe（28）, the circulating water pipe（27）With the venturi
Blender（12）Docking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720543535.2U CN207143179U (en) | 2017-05-17 | 2017-05-17 | A kind of device of the three-phase regeneration of lighter hydrocarbons desulfurization alkali lye |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720543535.2U CN207143179U (en) | 2017-05-17 | 2017-05-17 | A kind of device of the three-phase regeneration of lighter hydrocarbons desulfurization alkali lye |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207143179U true CN207143179U (en) | 2018-03-27 |
Family
ID=61659388
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720543535.2U Withdrawn - After Issue CN207143179U (en) | 2017-05-17 | 2017-05-17 | A kind of device of the three-phase regeneration of lighter hydrocarbons desulfurization alkali lye |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207143179U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107043636A (en) * | 2017-05-17 | 2017-08-15 | 宁波传致石化科技有限公司 | A kind of device and method of the three-phase regeneration of lighter hydrocarbons desulfurization alkali lye |
| US11198107B2 (en) | 2019-09-05 | 2021-12-14 | Visionary Fiber Technologies, Inc. | Conduit contactor and method of using the same |
-
2017
- 2017-05-17 CN CN201720543535.2U patent/CN207143179U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107043636A (en) * | 2017-05-17 | 2017-08-15 | 宁波传致石化科技有限公司 | A kind of device and method of the three-phase regeneration of lighter hydrocarbons desulfurization alkali lye |
| US11198107B2 (en) | 2019-09-05 | 2021-12-14 | Visionary Fiber Technologies, Inc. | Conduit contactor and method of using the same |
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Legal Events
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180327 Effective date of abandoning: 20181207 |