CN208362261U - A kind of light dydrocarbon fine de-sulfur device - Google Patents
A kind of light dydrocarbon fine de-sulfur device Download PDFInfo
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- CN208362261U CN208362261U CN201820505472.6U CN201820505472U CN208362261U CN 208362261 U CN208362261 U CN 208362261U CN 201820505472 U CN201820505472 U CN 201820505472U CN 208362261 U CN208362261 U CN 208362261U
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Abstract
The utility model discloses a kind of devices of light dydrocarbon fine de-sulfur, including fiber film contactor, the lower end of fiber film contactor is connected to desulfurization knockout drum left upper end, the upper right side of desulfurization knockout drum is connected to the lower end of adsorption dewatering tank, the top of adsorption dewatering tank is connected to absorption fine de-sulfur tank bottom end, absorption fine de-sulfur tank top is connected with light dydrocarbon discharge nozzle, the bottom righthand side of desulfurization knockout drum is connected to the right end of desulfurization product settling tank, the left end of desulfurization product settling tank is connected with desulfurizing agent pump, the first desulfurizing agent prefilter is connected between desulfurizing agent pump and desulfurization product settling tank, the second desulfurizing agent prefilter is connected between desulfurizing agent pump and fiber film contactor.Light dydrocarbon total sulfur can be removed to 1ppm or less, two-stage adsorbs the series connection of fine de-sulfur tank, and light dydrocarbon total sulfur can be removed to 0.1ppm hereinafter, the consumption of desulfurizing agent can be greatly decreased, light dydrocarbon desulphurization cost is reduced, light dydrocarbon is able to extend absorption desulfurizing agent service life by absorption method essence dehydration.
Description
Technical field
The utility model relates to technical field of desulfurization, it particularly relates to a kind of light dydrocarbon fine de-sulfur device.
Background technique
Petrochemical enterprise produces light dydrocarbon mainly from atmospheric and vacuum distillation unit and naphtha or direct steaming gasoline cracker, light dydrocarbon
Yield is generally at 100,000 tons/year hereinafter, scale is smaller.The few saturated carbon five of olefin-containing is generally used to reconciliation gasoline product, contains alkene
The higher unsaturated light dydrocarbon of hydrocarbon is mostly used as the polymer raw or other chemical products raw materials of production petroleum resin.Either it is saturated
Light dydrocarbon is made to reconcile gasoline product, or unsaturated light dydrocarbon is used to polymerize and generates petroleum resin, requires light dydrocarbon desulfurization.As tune
Total sulfur is required to be removed to 10ppm with the saturated carbon five of gasoline product hereinafter, to reach VI gasoline product total sulfur index of state V or state
It is required that the unsaturated light dydrocarbon as petroleum resin polymer raw then requires total sulfur more lower better.
It researchs and analyses, sulfur speciation mainly includes the organic sulfurs such as thioether, mercaptan, carbon disulfide, thiophene, partial devices in light dydrocarbon
The light dydrocarbon of production there may also be a small amount of hydrogen sulfide, carbonyl sulfur, disulfide.For the light dydrocarbon based on sulfide hydrogen, mercaptan, can be used
Liquid membrane contactor alkali cleaning technology removing more universal at present；If carbonyl sulfur, thioether, carbon disulfide, thiophene etc. vulcanize in light dydrocarbon
Object content is more than 10ppm, then caustic wash desulfuration technology is extremely difficult to gasoline product reconciliation or the polymerization of petroleum resin is total to light dydrocarbon raw material
The requirement of sulphur.The light dydrocarbon for being more than 100ppm for carbonyl sulfur, thioether, carbon disulfide, thiophene, disulfide sulfides content is former
Material generally uses hydrogenation method desulfurization, but hydro desulfurization plant investment is costly；Exist for these hardly possible removing form sulfur contents
100ppm light dydrocarbon raw material below, then more particularly suitable using the progress desulfurization of adsorbent doctor treatment, the adsorbent of adsorbent doctor treatment
Be it is consumptive, consumption is directly related with sulfur content in material carbon five.
A kind of cracking c_5 desulfurizing agent composition of the patent disclosure of Patent No. 201310233011.X, the desulfurizing agent group
Object is closed by one of organic amines such as dimethyl acetamide, trimethylamine, monoethanolamine, N methyldiethanol amine, diethyl hydroxylamine
Or it a variety of one of alkali salts such as with sodium hydroxide, potassium hydroxide, ammonium chloride, saleratus or a variety of compounds.The patent No.
The device and method of light dydrocarbon total sulfur are split for a kind of 201310232997.9 remove of patent disclosure, including coalescence dehydrator, de-
Sulphur agent front pump, mixer, pre-reactor, liquid film desulfurization reactor, liquid film wash contactor and product coalescer etc..Section 2
Desulfurizing agent described in patent is a kind of cracking c_5 desulfurizing agent composition described in first item patent, which requires carbon
Five pre-dehydrations, the desulfurizing agent composition and dehydration light dydrocarbon volume ratio be 0.01-0.5%, in the pre-reactor reaction time be
10-50 minutes, light dydrocarbon in pre-reactor after desulfurization using the desulfurization again of liquid film desulfurization reactor, separated into liquid film desulfurization
Tank and desulfurizing agent, desulfurization reaction product sedimentation separation, light dydrocarbon is using liquid film washing contactor washing except deentrainment after desulfurization
Desulfurizing agent and desulfurization reaction product, and in washing separation tank sedimentation separation, light dydrocarbon finally passes through the dehydration of product coalescer after washing.
Above-mentioned two patents beneficial effect is that in light dydrocarbon 90% or more sulphur is separated in the form of liquid organic sulfur compound.From its patent
File embodiment it can be concluded that, when light dydrocarbon total sulfur be greater than 100ppm when, product light dydrocarbon total sulfur cannot be completely secured less than 10ppm.
For the carbonyl sulfur in liquid hydrocarbon, patent 200510012331, patent 200410074539.8, patent
101108339, patent 1340373, described in patent 201410218662.6 be all solid hydrolytic catalyst of carbonyl sulfur.By solid
The limitation of body hydrolyst Sulfur capacity, COS content is higher, and catalyst service life is shorter, and solid waste needs landfill disposal after failure,
Form secondary pollution.
Patent 201010562891.1 is related to a kind of refining methd of liquefied gas, will using solid carbonyl sulfide hydrolysis
Carbonyl sulfide hydrolysis is hydrogen sulfide, then uses alkanolamine solution Absorption Desulfurization hydrogen, and liquefied gas uses removal of mercaptans agent again after de- carbonyl sulfur
Extracting removing, removal of mercaptans agent remove mercaptan using steam stripping technique, and removal of mercaptans agent can be recycled.Due to hydramine method Absorption Desulfurization
Change hydrogen and regeneration technology investment is larger, operating cost is high, and the raw material which reaches hundreds of ppm for COS content more closes
It is suitable, otherwise it is difficult industrial applications.
Patent 201410218896.0 is related to a kind of refining methd of liquefied gas, will using solid carbonyl sulfide hydrolysis
Carbonyl sulfide hydrolysis is hydrogen sulfide, then uses alkanolamine solution Absorption Desulfurization hydrogen, and liquefied gas is urged using thioetherification again after de- carbonyl sulfur
Mercaptan and etherification of olefine are generated the higher disulfide of boiling point by agent, then using destilling tower separation liquefied gas and disulfide.
For the mercaptan in liquid hydrocarbon, patent 201210276509.x, 201220012653.8, patent
201220253818.0, mercaptan is transferred in lye by the liquid membrane contactor and alkali cleaning technology that different series are respectively adopted, then is adopted
Lye is regenerated with different technologies.These technologies are appropriate only for the raw material containing mercaptan, higher for other form sulfur contents
Raw material be then difficult to meet product quality requirement.
00129724.4 the method for patent is first to convert disulfide for mercaptan in liquefied gas, then take off using distillation technique
Except disulfide.Patent 01134688.4 is related to a kind of method of indudstrialized refining liquefied gas, and liquefied gas passes through fixed bed reactors
In desulfurizing agent and catalyst, convert mercaptans to disulfide, liquefied gas removes disulfide by further rectifying.This two skills
Art is all to convert mercaptans to disulfide, then take off disulfide using the way of distillation, is suitable only for the raw material containing mercaptan and disulfide, and
Steam technologies steam energy is high, and desulphurization cost is higher.
In conclusion above-mentioned patent uses corresponding desulfurization skill both for a certain in liquid hydrocarbon or two kinds of Sulfurs
Art, wherein the solid hydrolyst takes off carbonyl sulfur technology, solid hydrolyst Sulfur capacity is smaller, replacement trouble, and
There is solid waste generation；The liquid membrane contactor mercaptan alkali cleaning removing sulfuldioxide and etherificate distillation removing disulfide technology, process flow
Long, plant investment is big, and desulphurization cost is high.
Above-mentioned patented technology desulfurization precision is not generally high, it is difficult to ensure that light dydrocarbon total sulfur is removed to 10ppm hereinafter, not being able to satisfy
The reconciliation gasoline product total sulfur requirement of saturated carbon five；It is more difficult to reach 1ppm hereinafter, being unable to satisfy the polymerization light dydrocarbon raw material of petroleum resin
Total sulfur requirement.
For the problems in the relevant technologies, currently no effective solution has been proposed.
Summary of the invention
For above-mentioned technical problem in the related technology, the present invention proposes a kind of light dydrocarbon fine de-sulfur device and based on the device
Sulfur method, be able to solve above-mentioned technical problem.
To realize the above-mentioned technical purpose, the technical scheme of the present invention is realized as follows:
A kind of device of light dydrocarbon fine de-sulfur, including fiber film contactor, the fiber film contactor are interior equipped with hydrophilic
Modified fiber yarn inner core, the top of the fiber film contactor are connected with light dydrocarbon feed pipe, the fiber film contactor
Lower end is connected to desulfurization knockout drum left upper end, and the upper right side of the desulfurization knockout drum is connected to the lower end of adsorption dewatering tank, described
The top of adsorption dewatering tank is connected to absorption fine de-sulfur tank bottom end, and the absorption fine de-sulfur tank top is connected with light dydrocarbon discharge nozzle；
The bottom righthand side of the desulfurization knockout drum is connected to the right end of desulfurization product settling tank, the left end connection of the desulfurization product settling tank
There is desulfurizing agent pump, is connected with the first desulfurizing agent prefilter between the desulfurizing agent pump and the desulfurization product settling tank, it is described
The second desulfurizing agent prefilter is connected between desulfurizing agent pump and the fiber film contactor.
Further, absorption fine de-sulfur ullage speed is 0.5-3 h-1, the ratio of height to diameter of absorption fine de-sulfur tank is 5-15.
Further, the top of the adsorption dewatering tank is connected with several concatenated absorption fine de-sulfur tanks of head and the tail.
A kind of sulfur method based on light dydrocarbon fine de-sulfur device, sulfur-bearing light dydrocarbon successively passes through the first desulfurization unit, dehydration is inhaled
Coupon member, the second desulfurization unit, first desulfurization unit includes the first desulfurizing agent being set in fiber film contactor, institute
It states and is equipped with hydrophilic modifying fiber filament inner core in fiber film contactor, first desulfurizing agent is polar liquid desulfurizing agent, described
Second desulfurization unit includes the second desulfurizing agent, and second desulfurizing agent is the 13X molecular sieve by rare earth element modification by calcination.
Further, first desulfurizing agent includes organic amine compound, phase transfer catalyst and inorganic assistant, described
The content of organic amine compound is 50%wt-98%wt, and the content of the phase transfer catalyst is 1.99%wt-49.99%wt, institute
State the content 0.001%wt-0.01%wt of inorganic assistant；PH value is alkalinity, and the organic amine compound includes more than one
Primary amine compound, more than one tertiary amine compounds and/or more than one secondary-amine compound；The phase transfer catalysis (PTC)
Agent is polyethylene glycol 200, polyethylene glycol 400, tetrabutylammonium bromide, tetrabutylammonium chloride, dodecyl trimethyl ammonium chloride, ten
One or more of tetraalkyl trimethyl ammonium chloride, pyridine or tri-n-butylamine；The inorganic assistant is sulfonation titanium cyanines cobalt, poly- titanium cyanines
The one or more of cobalt or titanium cyanines cobalt ichthyodin.
Further, dehydration absorbing unit includes dehydrated adsorbent, and the dehydrated adsorbent is selected solid sodium hydroxide, consolidated
Body potassium hydroxide, discoloration one of silica gel or molecular sieve.
Further, the solid sodium hydroxide selects rodlike sodium hydroxide, and molecular sieve selects 4A or 5A molecular sieve.
Further, the fiber filament substrate of the hydrophilic modifying fiber filament inner core is stainless steel, filament diameter 0.5-
1.5mm, surface are handled by hydrophilic modifying, and fiber filament is in continuous wave pattern shape, wave height 1-5mm, wavelength 5-15mm.
Further, the first desulfurizing agent circulation mass flow amount be light dydrocarbon material quality flow 5-50%, described second
Desulfurizing agent Sulfur capacity 1.5%.
Further, the first desulfurizing agent circulation mass flow amount is light dydrocarbon material quality flow 10-30%.
Beneficial effects of the present invention: by using fiber film contactor as light dydrocarbon and desulfurizing agent extractor, first
Desulfurizing agent and light dydrocarbon are come into full contact with certain proportion in fiber film contactor between hydrophilic modified fiber yarn with form of liquid film, complete
At organic sulfurs such as depriving hydrogen sulphide, carbonyl sulfur, mercaptan and carbon disulfide, it is further that other hardly possible removal of organic sulfur pass through the second desulfurizing agent again
Removing.Light dydrocarbon total sulfur can be removed to 1ppm hereinafter, two-stage absorption fine de-sulfur tank series connection, light dydrocarbon total sulfur can be removed to 0.1ppm with
Under, the consumption of desulfurizing agent can be greatly decreased, reduce light dydrocarbon desulphurization cost, light dydrocarbon is able to extend suction by absorption method essence dehydration
Attached desulfurizing agent service life.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of structural schematic diagram of the device of the light dydrocarbon fine de-sulfur described according to embodiments of the present invention.
In figure: 1. fiber film contactors；2. hydrophilic modifying fiber filament inner core；3. desulfurization knockout drum；4. adsorption dewatering tank；
5. adsorbing fine de-sulfur tank；6. desulfurization product settling tank；7. desulfurizing agent pumps；8. the first desulfurizing agent prefilter；9. the second desulfurizing agent
Prefilter.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art's every other embodiment obtained belong to what the present invention protected
Range.
As shown in Figure 1, the device of a kind of light dydrocarbon fine de-sulfur, including fiber liquid film contact according to embodiments of the present invention
Device 1, the fiber film contactor 1 is interior to be equipped with hydrophilic modifying fiber filament inner core 2, and the top of the fiber film contactor 1 connects
It is connected to light dydrocarbon feed pipe, the lower end of the fiber film contactor 1 is connected to 3 left upper end of desulfurization knockout drum, the desulfurization separation
The upper right side of tank 3 is connected to the lower end of adsorption dewatering tank 4, and the top and absorption 5 bottom end of fine de-sulfur tank of the adsorption dewatering tank 4 connect
It is logical, light dydrocarbon discharge nozzle is connected at the top of the absorption fine de-sulfur tank 5；The bottom righthand side and desulfurization product of the desulfurization knockout drum 3 are heavy
The right end connection of tank 6 drops, the left end of the desulfurization product settling tank 6 is connected with desulfurizing agent pump 7, desulfurizing agent pump 7 with it is described
The first desulfurizing agent prefilter 8 is connected between desulfurization product settling tank 6, the desulfurizing agent pump 7 is contacted with the fiber liquid film
The second desulfurizing agent prefilter 9 is connected between device 1.
In one embodiment, fine de-sulfur tank 5 air speed (tank inner top, middle part, top, highest temperature area are adsorbed
Empty tower gas velocity) it is 0.5-3 h-1, the ratio of height to diameter of absorption fine de-sulfur tank 5 is 5-15.
In one embodiment, it is de- to be connected with the concatenated absorption essence of several head and the tail for the top of the adsorption dewatering tank 4
Sulphur tank 5.
A kind of sulfur method based on light dydrocarbon fine de-sulfur device, light dydrocarbon successively pass through the first desulfurization unit, dehydration absorption list
Member, the second desulfurization unit, first desulfurization unit includes the first desulfurizing agent being set in fiber film contactor 1, described
Hydrophilic modifying fiber filament inner core is equipped in fiber film contactor 1, first desulfurizing agent is polar liquid desulfurizing agent, described the
Two desulfurization units include the second desulfurizing agent, and second desulfurizing agent is the 13X molecular sieve by rare earth element modification by calcination.
In one embodiment, first desulfurizing agent includes organic amine compound, phase transfer catalyst and inorganic
Auxiliary agent, the content of the organic amine compound are 50%wt-98%wt, and the content of the phase transfer catalyst is 1.99%wt-
49.99%wt, the content 0.001%wt-0.01%wt of the inorganic assistant；PH value is alkalinity, and the organic amine compound includes
More than one primary amine compound, more than one tertiary amine compounds and/or more than one secondary-amine compound；It is described
Phase transfer catalyst is polyethylene glycol 200, polyethylene glycol 400, tetrabutylammonium bromide, tetrabutylammonium chloride, dodecyl front three
One or more of ammonium chloride, tetradecyl trimethyl ammonium chloride, pyridine or tri-n-butylamine；The inorganic assistant is sulfonation titanium
The one or more of cyanines cobalt, poly- titanium cyanines cobalt or titanium cyanines cobalt ichthyodin.
In one embodiment, dehydration absorbing unit includes dehydrated adsorbent, and the dehydrated adsorbent selects solid hydrogen
Sodium oxide molybdena, solid potassium hydroxide, discoloration one of silica gel or molecular sieve.
In one embodiment, the solid sodium hydroxide selects rodlike sodium hydroxide, and molecular sieve selects 4A or 5A points
Son sieve.
In one embodiment, the fiber filament substrate of the hydrophilic modifying fiber filament inner core is stainless steel, and fiber filament is straight
Diameter 0.5-1.5mm, surface are handled by hydrophilic modifying, and fiber filament is in continuous wave pattern shape, wave height 1-5mm, wavelength 5-15mm.
In one embodiment, the first desulfurizing agent circulation mass flow amount is the 5-50% of light dydrocarbon material quality flow,
The second desulfurizing agent Sulfur capacity 1.5%.
In one embodiment, the first desulfurizing agent circulation mass flow amount is light dydrocarbon material quality flow 10-30%.
In order to facilitate understanding above-mentioned technical proposal of the invention, below by way of in specifically used mode to of the invention above-mentioned
Technical solution is described in detail.
When specifically used, sulfur-bearing light dydrocarbon according to the present invention is from 1 top light dydrocarbon feed pipe of fiber film contactor
Import enters fiber film contactor 1, and the first desulfurizing agent is after the pump pressurization of desulfurizing agent 7 from 1 top side portion of fiber film contactor
Into fiber film contactor 1, the first desulfurizing agent is polar liquid, and the first desulfurizing agent can be selected including organic amine chemical combination
The content of object, phase transfer catalyst and inorganic assistant, the organic amine compound is 50%wt-98%wt, and the phase transfer is urged
The content of agent is 1.99%wt-49.99%wt, the content 0.001%wt-0.01%wt of the inorganic assistant；PH value is alkalinity, institute
State primary amine compound that organic amine compound includes more than one, more than one tertiary amine compounds and/or it is a kind of with
On secondary-amine compound；The phase transfer catalyst is polyethylene glycol 200, polyethylene glycol 400, tetrabutylammonium bromide, four fourths
One of ammonium chloride, dodecyl trimethyl ammonium chloride, tetradecyl trimethyl ammonium chloride, pyridine or tri-n-butylamine are several
Kind；The inorganic assistant is the one or more of sulfonation titanium cyanines cobalt, poly- titanium cyanines cobalt or titanium cyanines cobalt ichthyodin, and the desulfurizing agent is in Shen
It please be number to be recorded in detail in 201610256212.5 apply for a patent.
First desulfurizing agent is a kind of polar organic solvent mixture, can be with hydrogen sulfide, mercaptan, carbonyl sulfur, carbon disulfide etc.
Organic sulfur compound occurs complex reaction and generates the big organic sulfur compound mixture of the first desulfurizing agent of density ratio itself.
The filament surface of hydrophilic modifying fiber filament inner core passes through proprietary hydrophilic modifying technical treatment.
First desulfurizing agent a large amount of superfine hydrophilic modifying filament surfaces in fiber film contactor 1 extend to form thickness
Micron-sized water phase liquid film, light dydrocarbon are dispersed into the oily phase film of Thickness grade between fiber filament, and two-phase is abundant with form of liquid film
Contact, two-phase contact area greatly improve, and the distance that substance diffuses to contact surface in phase accordingly greatly shortens, in oily phase film
The touch opportunity for reacting sulfide and the desulfurization compound in water thin film significantly improve, while spread and the reaction time it is big
Big to shorten, reaction product is brought into the first desulfurizing agent.Fiber film contactor 1 is mounted on desulfurization knockout drum 3 by flange,
Light dydrocarbon and the first desulfurizing agent enter desulfurization knockout drum 3, and since polarity is different and density contrast is larger, two-phase is in desulfurization knockout drum 3
Sedimentation separation, on upper layer, by the outlet of 3 top light dydrocarbon of desulfurization knockout drum, (desulfurization knockout drum 3 is connected to light dydrocarbon with adsorption dewatering tank 4
Position) it sends out, the first desulfurizing agent is deposited in 3 lower layer of desulfurization knockout drum and passes through 3 bottom desulfurizing agent of desulfurization knockout drum outlet (desulfurization point
The position being connect from tank 3 with the first desulfurizing agent prefilter 8) it sends out.The first desulfurizing agent containing desulfurization product first passes through desulfurization production
Object settling tank 6 settles, and desulfurization product density is deposited in greatly bottom, periodically gives off device, the desulfurization of sedimentation separation desulfurization product
Agent is filtered to remove partial desulfurization product using the first desulfurizing agent prefilter 8, using 7 pressurization of desulfurizing agent pump, using the
Two desulfurizing agent filters 9 are further filtered to remove desulfurization product, finally enter fiber film contactor 1.Portion can be consumed when desulfurization
Divide the first desulfurizing agent, desulfurization product can also carry race damage the first desulfurizing agent of part secretly when discharging, the first desulfurizing agent needs to pass through desulfurization
Agent pumps 7 regular replenishments.After preliminary desulfurization in light dydrocarbon hydrogen sulfide, carbonyl sulfur, mercaptan, carbon disulfide total content can be removed to 1ppm with
Under.
(2) the preliminary desulfurization light dydrocarbon from desulfurization knockout drum 3 enters suction from the light dydrocarbon import of 4 bottom side of adsorption dewatering tank
Attached drain sump 4, light dydrocarbon flows from bottom to top, by the water isopolarity of adsorption dehydrating agent removing light dydrocarbon entrainment in adsorption dewatering tank 4
Substance is exported from 4 top light dydrocarbon of adsorption dewatering tank after dehydration and is sent out.Adsorption dehydrating agent is solid sodium hydroxide, solid hydroxide
Potassium, discoloration one of silica gel or molecular sieve, the preferably rodlike sodium hydroxide of solid sodium hydroxide, the preferred 4A or 5A molecule of molecular sieve
Sieve.Water content is no more than 10ppm in light dydrocarbon after dehydration.Light dydrocarbon is to protect absorption fine de-sulfur using absorption method essence dehydration
Agent extends absorption desulfurizing agent service life.
(3) light dydrocarbon from adsorption dewatering tank 4 enters absorption fine de-sulfur from the light dydrocarbon import of absorption 4 bottom of fine de-sulfur tank
Tank 5, light dydrocarbon flows from bottom to top, smart by remaining other difficult desulfurization in the second sulphur agent removing light dydrocarbon in absorption fine de-sulfur tank 5
Light dydrocarbon is sent out from the outlet of absorption 5 top light dydrocarbon of fine de-sulfur tank after desulfurization.Second desulfurizing agent is by rare earth element modification by calcination
13X molecular sieve, the second desulfurizing agent Sulfur capacity 1.5%, absorption 5 air speed of fine de-sulfur tank are 0.5-3, and the ratio of height to diameter of absorption fine de-sulfur tank 5 is
5-15, ratio of height to diameter are height and diameter ratio.Light dydrocarbon total sulfur can be removed to 1ppm hereinafter, can be according to product total sulfur desulfurization precision
It needs, design separate unit adsorbs fine de-sulfur tank 5, and two or more absorption fine de-sulfurs 5 are used in series, and two-stage adsorbs the string of fine de-sulfur tank 5
Connection, light dydrocarbon total sulfur can be removed to 0.1ppm or less.Factory's regeneration can be returned after second desulfurizing agent adsorption saturation to reuse.
Embodiment 1:
Certain petro-chemical corporation's atmospheric and vacuum distillation unit produces five sample of saturated carbon, carries out desulfurization, experiment using the method for the present invention
As a result as follows:
Five temperature of saturated carbon is room temperature, hydrogen sulfide content 23ppm, mercaptans content 87ppm, and COS content 6ppm is other
Form organic sulfur total content 28ppm, after the processing of the method for the present invention experimental provision, five total sulfur 0.06ppm of refining carbon.
Embodiment 2:
Certain chemical company's petroleum resin device builds a set of 50,000 tons/year of light dydrocarbon desulfurizers, dress using the method for the present invention
It is as follows to set operation result:
Five temperature of material carbon is room temperature, pressure 0.5MPa, mercaptans content 20-40ppm, COS content 5-10ppm, two sulphur
Change carbon content 100-150ppm, other form organic sulfur total content 30-50ppm, is handled by the invention patent technology and device
Afterwards, product light dydrocarbon total sulfur 0.5-1ppm.
In conclusion by means of above-mentioned technical proposal of the invention, by using fiber film contactor as light dydrocarbon with
Desulfurizing agent extractor, the first desulfurizing agent and light dydrocarbon with certain proportion in fiber film contactor between hydrophilic modified fiber yarn with
Form of liquid film comes into full contact with, and completes the organic sulfurs such as depriving hydrogen sulphide, carbonyl sulfur, mercaptan and carbon disulfide, other hardly possible removal of organic sulfur are again
It is further removed by the second desulfurizing agent.Light dydrocarbon total sulfur can be removed to 1ppm hereinafter, two-stage absorption fine de-sulfur tank series connection, light dydrocarbon
Total sulfur can be removed to 0.1ppm hereinafter, the consumption of desulfurizing agent can be greatly decreased, and reduce light dydrocarbon desulphurization cost, and light dydrocarbon passes through absorption method
Smart dehydration is able to extend absorption desulfurizing agent service life.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (4)
1. a kind of light dydrocarbon fine de-sulfur device, which is characterized in that including fiber film contactor (1), the fiber film contactor
(1) hydrophilic modifying fiber filament inner core (2) is equipped in, the top of the fiber film contactor (1) is connected with light dydrocarbon feed pipe, institute
The lower end for stating fiber film contactor (1) is connected to desulfurization knockout drum (3) left upper end, the upper right side of the desulfurization knockout drum (3)
It is connected to the lower end of adsorption dewatering tank (4), the top of the adsorption dewatering tank (4) is connected to absorption fine de-sulfur tank (5) bottom end, institute
It states and is connected with light dydrocarbon discharge nozzle at the top of absorption fine de-sulfur tank (5)；The bottom righthand side and desulfurization product of the desulfurization knockout drum (3) settle
The right end of tank (6) is connected to, and the left end of the desulfurization product settling tank (6) is connected with desulfurizing agent pump (7), and the desulfurizing agent pumps (7)
Be connected with the first desulfurizing agent prefilter (8) between the desulfurization product settling tank (6), the desulfurizing agent pump (7) with it is described
The second desulfurizing agent prefilter (9) is connected between fiber film contactor (1).
2. a kind of light dydrocarbon fine de-sulfur device according to claim 1, which is characterized in that adsorbing fine de-sulfur tank (5) air speed is
0.5-3h-1, the ratio of height to diameter of absorption fine de-sulfur tank (5) is 5-15.
3. a kind of light dydrocarbon fine de-sulfur device according to claim 1, which is characterized in that the top of the adsorption dewatering tank (4)
It is connected with several concatenated absorption fine de-sulfur tanks (5) of head and the tail.
4. a kind of light dydrocarbon fine de-sulfur device according to claim 1, which is characterized in that the hydrophilic modifying fiber filament inner core
(2) fiber filament substrate is stainless steel, and filament diameter 0.5-1.5mm, fiber filament is in continuous wave pattern shape, wave height 1-5mm, wavelength
5-15mm。
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108410501A (en) * | 2018-04-11 | 2018-08-17 | 宁波章甫能源科技有限公司 | A kind of light dydrocarbon fine de-sulfur device and the sulfur method based on the device |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108410501A (en) * | 2018-04-11 | 2018-08-17 | 宁波章甫能源科技有限公司 | A kind of light dydrocarbon fine de-sulfur device and the sulfur method based on the device |
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