CN104927907A - Alkylation product desulphurization and deacidifying method and device - Google Patents
Alkylation product desulphurization and deacidifying method and device Download PDFInfo
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- CN104927907A CN104927907A CN201510377435.2A CN201510377435A CN104927907A CN 104927907 A CN104927907 A CN 104927907A CN 201510377435 A CN201510377435 A CN 201510377435A CN 104927907 A CN104927907 A CN 104927907A
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- C07C7/00—Purification; Separation; Use of additives
- C07C7/12—Purification; Separation; Use of additives by adsorption, i.e. purification or separation of hydrocarbons with the aid of solids, e.g. with ion-exchangers
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G53/00—Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes
- C10G53/02—Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes plural serial stages only
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Abstract
The invention relates to an alkylation product desulphurization and deacidifying method and device, and provides an alkylation product desulphurization and deacidifying method. The invention further provides an alkylation product desulphurization and deacidifying device.
Description
Technical field
The invention belongs to the organosulfur compound and free sulfuric acid that carry in alkylate to the field of the corrosion of follow-up equipment, relate to a kind of method and apparatus removing organosulfur compound (as: sulfuric ester) and free sulfuric acid from alkylate.
Background technology
The environmental pollution of the world today is day by day serious, and environment protection is subject to the attention being generally subject to various countries.At home and abroad, along with the surge of car owning amount, the pollution of car exhaust gas to air is on the rise, and the environmental requirement of various countries is also increasingly strict, and this has higher requirement to the octane value of automobile oil and degree of cleaning.The premium properties feature such as high-octane rating, low sulfur content of alkylate oil makes it day by day be subject to various countries' attention.
In refining of petroleum industry, alkylation is that paraffinic hydrocarbons, normally isoparaffin and alkene prepare more high-octane paraffinic hydrocarbons under strong acid exists, and this is known method.Alkylation process needs to carry out in strong acid environment, general is catalyzer with sulfuric acid, sulfuric acid is often stirred and is processed into fine droplets or emulsion, which increase settlement separate difficulty, must carry out sour hydrocarbon separation to alkylate stream effluent in a subsequent technique, otherwise these strong acid enter the heavy corrosion that subsequent technique can cause equipment.In this external alkylated reaction, some olefin and sulfuric acid reaction generate the sulfurous organic compounds such as sulfuric ester, and these esters are extremely unstable under acidity or hot conditions, if do not removed, are decomposed by the deisobutanizer in downstream and release SO
2(under the high temperature conditions), run into moisture, then can severe corrosion equipment, and in the reboiler fouling of deisobutanizer.So, must be removed.
The method that acid hydrocarbon is separated has Physical, physico-chemical processes and chemical method etc.Chinese patent application CN102021016A discloses a kind of method that modified ceramic membrane module removes acid in alkylation reaction product, can realize acid content in oil and, lower than 100mg/L, realize removing of acid more subsequently with soda lye wash.Chinese patent application CN1803739A discloses a kind of demist container containing coalescence material, by the sulfuric acid in moistening coalescence materials adsorption removing alkylate and sulfuric ester.Chinese patent application CN1688524A discloses and a kind of from alkylate, goes out sulfuric acid by mechanical coalescence device, in next stage technique, then add the sulphonate in catalyzer removing product and sulfonate.
But the method for above-mentioned prior art can not solve the organosulfur compound and free sulfuric acid that carry in alkylate effectively to the etching problem of follow-up equipment.
Therefore, this area can be separated with materials such as sulfuric esters the sulfuric acid in alkylate effectively in the urgent need to developing, and makes alkylate reach the method and apparatus of desulfurization depickling object.
Summary of the invention
The invention provides a kind of method and apparatus of alkylate desulfurization depickling of novelty, thus solve problems of the prior art.
Technical problem to be solved by this invention is, the organosulfur compound carried in alkylate and free sulfuric acid are to the corrosion of follow-up equipment.
On the one hand, the invention provides a kind of method of alkylate desulfurization depickling, the method comprises the following steps:
(a) being separated liquid state with pickling in adverse current or cross-current flow feeding pickling separating tank, coalescence with alkylate and new sulfuric acid two strands of materials of sulfuric ester containing sulfuric acid;
B (), in the pickling wire packing of pickling separating tank bottom, sulfuric ester fully contacts with new sulfuric acid and dissolution extraction, the simultaneously separation of generation coalescence mutually; Sulfuric acid more than 50% in the sulfuric ester of vitriolization and alkylate settles down to pickling separating tank as heavy phase, delivers to pickling slurry tank or alkylation reactor or arrange outward after enrichment;
C () enters the separation wire packing on pickling separating tank top as the alkylate of light phase, wherein, on separation wire packing, be separated by coalescence as the sulfuric acid more than 95% in the alkylate of light phase, obtain the alkylate that sulfuric acid content is about 0.01% ~ 1.0%; Sulfuric acid after coalescence is separated is settled down to bottom pickling separating tank;
D alkylate that the sulfuric acid content of () gained is about 0.01% ~ 1.0% is sent to sour hydrocarbon segregation section from pickling separating tank top and carries out sour hydrocarbon separation, and wherein, described sour hydrocarbon segregation section is single-stage or multistage sour hydrocarbon tripping device;
E () carries out roughing out and fine separation to the sulfuric acid that described sulfuric acid content is about entrained with in the alkylate of 0.01% ~ 1.0% in sour hydrocarbon tripping device, obtain the alkylate of sulfuric acid content lower than 10 ㎎/㎏; Be conveyed to pickling slurry tank or alkylation reactor after separating sulfuric acid enrichment or arrange outward; And
F the sulfuric acid content of () gained is sent in adsorption unit lower than the alkylate of 10 ㎎/㎏, to adsorb the sulfuric acid of remaining content lower than 10 ㎎/㎏, be removed the alkylate of sulfuric ester and sulfuric acid.
In one preferred embodiment, described step (a) also comprises: before sending in pickling separating tank by the alkylate containing sulfuric acid and sulfuric ester of liquid state and new sulfuric acid two strands of materials with adverse current or cross-current flow, make it fully mix in mixing tank.
Another preferred embodiment in, in step (d), described sour hydrocarbon segregation section is that two-stage acid hydrocarbon tripping device gradient is arranged, the alkylate that the roughing out of primary acids hydrocarbon tripping device obtains directly is sent to secondary acid hydrocarbon tripping device and carries out fine separation.
Another preferred embodiment in, in step (f), the sulfuric acid content of gained is sent in the adsorption unit that exchange adsorption resin bed is housed lower than the alkylate of 10 ㎎/㎏, to adsorb the sulfuric acid of remaining content lower than 10 ㎎/㎏, its sulfuric acid concentration is dropped to lower than 1 ㎎/㎏.
On the other hand, the invention provides a kind of device of alkylate desulfurization depickling, this device comprises:
Pickling separating tank, for send into liquid state wherein carry out pickling containing sulfuric acid with alkylate and new sulfuric acid two strands of materials of sulfuric ester, coalescence is separated;
At the pickling wire packing of pickling separating tank bottom, be provided for sulfuric ester fully contact with fresh sulfuric acid and mutually dissolution extraction, there is coalescence simultaneously and be separated;
At the separation wire packing on pickling separating tank top, for making the sulfuric acid more than 95% in the alkylate after overpickling wire packing (2) be separated by coalescence, obtain the alkylate that sulfuric acid content is about 0.01% ~ 1.0%;
Tank connected sour hydrocarbon segregation section is separated with pickling, wherein, described sour hydrocarbon segregation section is single-stage or multistage sour hydrocarbon tripping device, for described sulfuric acid content is about 0.01% ~ 1.0% alkylate in the sulfuric acid of entrained with carry out roughing out and fine separation, obtain the alkylate of sulfuric acid content lower than 10 ㎎/㎏;
The adsorption unit be connected with sour hydrocarbon segregation section, for adsorbing the sulfuric acid of remaining content lower than 10 ㎎/㎏, be removed the alkylate of sulfuric ester and sulfuric acid.
In one preferred embodiment, this device also comprises: be separated tank connected mixing tank with pickling, for before sending in pickling separating tanks by the alkylate containing sulfuric acid and sulfuric ester of liquid state and new sulfuric acid two strands of materials, makes it fully mix.
Another preferred embodiment in, described sour hydrocarbon segregation section is that two-stage acid hydrocarbon tripping device gradient is arranged, the alkylate that the roughing out of primary acids hydrocarbon tripping device obtains directly is sent to connected secondary acid hydrocarbon tripping device and carries out fine separation.
Another preferred embodiment in, described adsorption unit is equipped with exchange adsorption resin bed, for adsorbing the sulfuric acid of remaining content lower than 10 ㎎/㎏, its sulfuric acid concentration is dropped to lower than 1 ㎎/㎏.
Another preferred embodiment in, the voidage of described pickling wire packing is greater than 90%, and screen fabric diameter is 0.3 ~ 4mm, and thickness is 100 ~ 300mm, is formed by tetrafluoroethylene and weaving metallic fibers; The voidage of described separation wire packing is 80% ~ 90%, and screen fabric diameter is 0.1 ~ 3mm, and thickness is for being greater than 200mm, and its first half section is formed by tetrafluoroethylene and weaving metallic fibers, and the second half section is formed by polypropylene and weaving metallic fibers; Further, described pickling wire packing and the shortest distance be separated between wire packing are 0.3 ~ 4D, and are no less than 500mm, and wherein D is the internal diameter of pickling separator pot; In the middle part of space place on the upper side between pickling wire packing and separation wire packing for mixed solution opening for feed or new sulfuric acid opening for feed; Described opening for feed place arranges erosion control rectifier, and described erosion control rectifier is selected from the one in perforated tube, take-off pipe, erosion control baffle plate, swash plate and column blade.
Another preferred embodiment in, two section fibre film beds are equipped with in the inside of described primary acids hydrocarbon tripping device, and the porosity of described tunica fibrosa bed is 80% ~ 90%, and Fibre diameter is less than 200 μm, and thickness is greater than 200mm; Wherein, the first half section of every section fibre film bed is formed by teflon fibre braided, and the second half section is formed by one or more braidings be selected from steel fiber, polytetrafluoroethylene fiber, polypropylene fibre and trevira; Two sections of Fibrous membrane filtration filter cores made through super nano fibrous membrane that is hydrophilic or super oleophylic modification are equipped with in the inside of described secondary acid hydrocarbon tripping device, and the porosity of described tunica fibrosa is less than 80%, and Fibre diameter is less than 100 μm, and thickness is greater than 50mm; Wherein, described nano fibrous membrane is by being selected from one or more in steel fiber, polytetrafluoroethylene fiber, polypropylene fibre and trevira through modified braiding; Further, the interval shortest distance between the tunica fibrosa bed of described primary acids hydrocarbon tripping device inside and between the Fibrous membrane filtration filter core of secondary acid hydrocarbon tripping device inside is 0.1 ~ 0.5D, and is no less than 500mm; After primary acids hydrocarbon tripping device and secondary acid hydrocarbon tripping device, the shortest distance of settling section is 0.3 ~ 2D ', and is no less than 1000mm, wherein D ' the internal diameter that is primary acids hydrocarbon tripping device and secondary acid hydrocarbon tripping device; The inside ingress of described primary acids hydrocarbon tripping device and secondary acid hydrocarbon tripping device have respectively uniform fluid distribution cowling panel and, described uniform fluid distribution cowling panel and be the uniform perforate slab of porous.
Accompanying drawing explanation
Fig. 1 is the alkylate desulfurization deacidifying process schematic flow sheet according to an embodiment of the invention.
Fig. 2 is alkylate desulfurization deacidifying process schematic flow sheet according to another implementation of the invention.
Fig. 3 is the alkylate desulfurization deacidifying process schematic flow sheet according to yet further embodiment of the invention.
Embodiment
Present inventor finds after extensive and deep research, for the organosulfur compound carried in alkylate and free sulfuric acid to the etching problem of follow-up equipment, eliminate sulfurous organic compound and most of sulfuric acid such as the sulfuric ester in alkylate by efficient mechanical pickling separating tank; And utilize tunica fibrosa isolation technique, by efficient single-stage acid hydrocarbon tripping device or multistage sour hydrocarbon tripping device with the acid in Ex-all alkylate, this process is made not need washing and alkali cleaning also not to need to add any catalyzer, thus overcome washing, alkali cleaning and add the problem that affects on subordinate's process unit such as catalyzer, shorten flow process, decrease investment, save energy consumption.Based on above-mentioned discovery, the present invention is accomplished.
Technical conceive of the present invention is as follows:
Tunica fibrosa isolation technique is the novel heterogeneous separation technique that developed recently gets up, and its principle of work mainly includes: (1) fibre modification technology: by amendment surface property, set up super hydrophilic/super oil-wet behavior of material; (2) fiber capturing coalescence principle: nanometer parents fiber fine acid can drip the emulsification rete of surrounding in destructive alkylation product, the tiny acid caught in oil in water emulsion parcel is dripped, and realizes demulsification; (3) the induction separation principle of fibre configuration: induction is separated and has benefited from special fibre configuration, the tiny acid on fiber is dripped and is dripped by the larger acid of node collision coalescence formation; (4) the heterogeneous filtering feature of tunica fibrosa: macroscopically, the tunica fibrosa showing as two-phase through resistance difference, for oil phase, its perviousness is good, and acid is then difficult to mutually quickly through tunica fibrosa, therefore, two-phase produces velocity-slip characteristic, strengthening breakdown of emulsion.Therefore, tunica fibrosa isolation technique, not only based on drop coalescence principle, realizes liquid-liquid two-phase sharp separation, also has potent demulsification.
Sulfurous organic compound and most of sulfuric acid such as the sulfuric ester in alkylate is eliminated by efficient mechanical pickling separating tank; And utilize tunica fibrosa isolation technique, by efficient single-stage acid hydrocarbon tripping device or multistage sour hydrocarbon tripping device with the acid in Ex-all alkylate, make this process not need washing and alkali cleaning also not to need to add any catalyzer, thus overcome washing, alkali cleaning and add catalyzer etc. problem is affected on subordinate's process unit.
The present invention by the alkylate of liquid state and entrainment thereof and new sulfuric acid are carried out mixing pickling by adverse current or cross-current flow in pickling separating tank, and is separated for the first time to the alkylation reaction product after pickling; Alkylate after pickling is separated carries out roughing out through primary acids hydrocarbon tripping device, obtains one-level oil phase and primary acids phase; One-level oil phase enters secondary acid hydrocarbon tripping device and carries out fine separation, and obtain secondary oil phase and secondary acid phase, in the secondary oil phase obtained, acid content is extremely low; Alkylate containing denier sulfuric acid can be sent to an adsorption device and do last process, and the sulfuric acid in the alkylate after process eliminates substantially, and the alkylate after purification is admitted to deisobutanizer or next stage technique; All come back in alkylation reactor or in pickling slurry tank after the sulfuric acid that pickling separating tank is separated and sulfuric ester and primary acids phase and the enrichment of secondary acid phase and continue to participate in reaction, save sulfuric acid usage quantity.The inventive method is reliable for effect, and the alkylate Free Sulfuric Acid content after adsorption unit is no more than 1 ㎎/㎏, and sulfuric ester decreasing ratio up to 99.9%, and then can save the techniques such as follow-up alkali cleaning, washing, shortens flow process, decreases investment, save energy consumption.
In a first aspect of the present invention, provide a kind of method of alkylate desulfurization depickling, the method comprises the following steps:
A sulfuric acid enters pickling in pickling separating tank with alkylate and new sulfuric acid two strands of materials of sulfuric ester with adverse current or cross-current flow, coalescence is separated in () liquid containing, or fully mix in mixing tank before feeding pickling tank;
B (), at the pickling wire packing of pickling separating tank bottom, makes sulfuric ester and fresh sulfuric acid fully contact and dissolution extraction, the simultaneously separation of generation coalescence mutually; In the sulfuric ester of vitriolization and alkylate, the sulfuric acid of more than 50% settles down to pickling separating tank as heavy phase, delivers to pickling slurry tank or alkylation reactor or arrange outward after enrichment;
C () enters the separation wire packing on pickling separating tank top as the alkylate of light phase; Separation wire packing on, as in the alkylate of light phase more than 95% sulfuric acid be separated by coalescence, obtain the alkylate that sulfuric acid content is about 0.01% ~ 1.0%; Sulfuric acid after coalescence is separated is settled down to bottom pickling separating tank;
D alkylate that () sulfuric acid content is about 0.01% ~ 1.0% is sent to sour hydrocarbon segregation section from pickling separating tank top and carries out sour hydrocarbon separation;
E () sour hydrocarbon segregation section is single-stage or multistage sour hydrocarbon tripping device, preferred two-stage acid hydrocarbon tripping device; In sour hydrocarbon tripping device, roughing out and fine separation are carried out to the sulfuric acid of alkylate entrained with, obtain the alkylate of sulfuric acid content lower than 10 ㎎/㎏; Be conveyed to pickling slurry tank or alkylation reactor after separating sulfuric acid enrichment or arrange outward; And
F () sulfuric acid content is sent in adsorption unit lower than the alkylate of 10 ㎎/㎏, to adsorb sulfuric acid that is remaining, extremely trace, the alkylate of be removed sulfuric ester and sulfuric acid; Then be sent to deisobutanizer to take off Trimethylmethane or send into next stage technique and process.
In the present invention, new sulfuric acid and the liquid alkylate containing sulfuric acid and sulfuric ester enter pickling separating tank with the form of adverse current or cross-flow, because wire packing is special, narrow and small, substandard pore passage structure, pickling wire packing is dispersed into drop or thread, increase contact area and the contact probability of new sulfuric acid and sulfuric ester, make its abundant contact lysis, extraction, or fully mix in mixing tank before feeding pickling tank, to remove the organosulfur compounds such as sulfuric ester in alkylate.Pickling wire packing can become drop or thread new sulfuric acid with two strands of material dispersions such as the alkylates carrying sulfuric ester secretly, and contact carrier is provided, greatly increase contact area and the contact probability of new sulfuric acid and sulfuric ester, make its abundant contact lysis, and then greatly improve the extraction quantity of new sulfuric acid to sulfuric ester; Abundant mixing can improve the extraction quantity of new sulfuric acid to sulfuric ester; The mode of adverse current or cross-flow also can increase the touch opportunity of new sulfuric acid and sulfuric ester, also can produce beneficial effect to the extraction of sulfuric ester.Many experiments proves: mix pickling compared in mixing tank, take wire packing as carrier, not only can strengthen pickling effect, but also can have coalescence centrifugation while pickling, considerably increases in alkylate and carries sulfuric ester clearance secretly.
In the present invention, the alkylate after pickling enters the separation wire packing on pickling separating tank top; On separation wire packing, in alkylate, the sulfuric acid of more than 95% is separated by coalescence, obtains the alkylate that sulfuric acid content is about 0.01% ~ 1.0%; Sulfuric acid after separation is settled down to bottom pickling separating tank.Be separated wire packing can effectively tackle, coalescence be separated more than 95% sulfuric acid and sulfuric acid dissolution thing.The remaining sulfuric acid do not eliminated is sent to sour hydrocarbon segregation section through pipeline and carries out tunica fibrosa separation, thus reaches the object eliminating sulfuric acid in alkylate.
In the present invention, two-stage acid hydrocarbon tripping device gradient is arranged, to realize carrying out roughing out and fine separation to the sulfuric acid carried secretly in alkylate; Wherein, the alkylate that the roughing out of primary acids hydrocarbon tripping device obtains directly is sent to secondary acid hydrocarbon tripping device and carries out fine separation.Due to higher from pickling separating tank top sulfuric acid content out, other impurity are also more, and it is limited for the nano fibrous membrane filter core separating power of fine separation, and hole is less, if directly carry out fine separation, block sour hydrocarbon tripping device possibly or separating effect bad, therefore must roughing out be added before fine separation, to remove oarse-grained sulfuric acid and other impurity, therefore preferred two-stage acid hydrocarbon tripping device.Enter primary acids hydrocarbon tripping device by pickling separating tank top alkylate out through pipeline, after the redistribution of uniform fluid distribution cowling panel, the tunica fibrosa bed entering primary acids hydrocarbon tripping device inside carries out roughing out, obtains the alkylate after roughing out; And after be directly sent to secondary acid hydrocarbon tripping device through pipeline, after uniform fluid distribution cowling panel redistributes again, the nano fibrous membrane filter core entering secondary acid hydrocarbon tripping device inside carries out fine separation, obtains the alkylate of sulfuric acid content lower than 10 ㎎/㎏.The primary acids phase that firsts and seconds acid hydrocarbon tripping device is separated and secondary acid phase, be conveyed to pickling slurry tank through pipeline after enrichment or alkylation reactor recycles or arranges outward.
In the present invention, the sulfuric acid content after separation enters lower than the alkylate of 10 ㎎/㎏ the adsorption unit that exchange adsorption resin bed is housed, and exchange adsorption resin can adsorb the sulfuric acid carried secretly in alkylate, makes its sulfuric acid concentration drop to 1 ㎎ below/㎏.
In a second aspect of the present invention, provide a kind of device of alkylate desulfurization depickling, this device comprises:
Mixing tank, is provided for new sulfuric acid and fully mixes with the alkylate containing sulfuric ester and sulfuric acid;
The pickling separating tank be connected with mixing tank, for separating of the sulfuric acid carried secretly in sulfuric ester and most alkylate;
Realize the single-stage of gradient separations or multistage sour hydrocarbon tripping device, preferred two-stage acid hydrocarbon tripping device, namely, the primary acids hydrocarbon tripping device be connected with pickling separating tank top and export the secondary acid hydrocarbon tripping device be connected with the oil phase of primary acids hydrocarbon tripping device, wherein, primary acids hydrocarbon tripping device is used for carrying out roughing out to the sulfuric acid carried secretly in alkylate, to remove the sulfuric acid of macrobead particle diameter; Secondary acid hydrocarbon tripping device is used for carrying out fine separation to carrying a small amount of sulfuric acid in alkylate secretly, removes the sulfuric acid compared with small-particle particle diameter;
The adsorption unit of connecting with sour hydrocarbon segregation section, exchange adsorption resin bed is equipped with in its inside, for adsorbing the sulfuric acid of denier in alkylate, so that the sulfuric acid concentration in alkylate is dropped to 1 ㎎ below/㎏.
In the present invention, the voidage of the pickling wire packing of described pickling separating tank bottom is greater than 90%, and screen fabric diameter is 0.3 ~ 4mm, and thickness is 100 ~ 300mm, is formed according to the braiding of certain form of presentation by polytetrafluoroethylene fiber and steel fiber, the voidage of the separation wire packing on described pickling separating tank top is 80% ~ 90%, screen fabric diameter is 0.1 ~ 3mm, thickness is more than 200mm, its first half section is formed according to the braiding of certain form of presentation by polytetrafluoroethylene fiber and steel fiber, second half section is formed according to the braiding of certain form of presentation by polypropylene fibre and steel fiber, it can effectively be tackled, coalescence is separated sulfuric acid and the solute thereof of more than 95%, the remaining sulfuric acid do not eliminated will be sent to sour hydrocarbon segregation section and carry out multistage tunica fibrosa separation, thus reach the object eliminating sulfuric acid in alkylate.
In the present invention, the pickling wire packing in described pickling separating tank and the shortest distance be separated between wire packing are 0.3 ~ 4D, and are no less than 500mm (D is the internal diameter of pickling separator pot); In the middle part of space place on the upper side between pickling wire packing and separation wire packing for mixed solution opening for feed or new sulfuric acid opening for feed; Described opening for feed place arranges erosion control rectifier, and described erosion control rectifier is be selected from the one in perforated tube, take-off pipe, erosion control baffle plate, swash plate and column blade.
Preferably, the two-stage or multistage sour hydrocarbon tripping device that realize gradient separations are set, preferred two-stage acid hydrocarbon tripping device.The tunica fibrosa bed that two sections have special construction structure, the sulfuric acid particle of separable Large stone are equipped with in the inside of described primary acids hydrocarbon tripping device.Two sections of filter cores made through super nano fibrous membrane that is hydrophilic or super oleophylic modification are equipped with in the inside of described secondary acid hydrocarbon tripping device, can sulfuric acid particle that effectively particle separation diameter is less.Its beneficial effect achieves to carry out gradient separations to the acid of entrained with in effluent, and the separating power of nano-fiber material to acid particularly through modification is better.
In the present invention, the tunica fibrosa bed that two sections have special construction structure is equipped with in the inside of described primary acids hydrocarbon tripping device; The porosity of described tunica fibrosa bed is 80% ~ 90%, and the Fibre diameter of described tunica fibrosa bed is less than 200 μm; Every section fibre film bed thickness is more than 200mm; Wherein the first half section of every section fibre film bed is formed by teflon fibre braided; The second half section of every section fibre film bed is formed by one or more braidings be selected from steel fiber, polytetrafluoroethylene fiber, polypropylene fibre and trevira etc.
In the present invention, two sections of filter cores made through super nano fibrous membrane that is hydrophilic or super oleophylic modification are equipped with in the inside of described secondary acid hydrocarbon tripping device; The porosity of described tunica fibrosa is less than 80%, and Fibre diameter is less than 100 μm; The nanofiber film thickness of described every section of filter core is more than 50mm; Described nano fibrous membrane is by being selected from one or more in steel fiber, polytetrafluoroethylene fiber, polypropylene fibre and trevira etc. through modified braiding.
In the present invention, the interval shortest distance between every two section fibre film beds of described firsts and seconds acid hydrocarbon tripping device inside is 0.1 ~ 0.5D ', and is no less than 500mm; After acid hydrocarbon tripping device, settling section shortest distance is 0.3 ~ 2D ', and is no less than 1000mm (D ' be the internal diameter of sour hydrocarbon tripping device).
In the present invention, all there is uniform fluid distribution cowling panel in the inside ingress of described firsts and seconds acid hydrocarbon tripping device, and described uniform fluid distribution cowling panel is the uniform perforate slab of porous.
Below referring to accompanying drawing.
Fig. 1 is the alkylate desulfurization deacidifying process schematic flow sheet according to an embodiment of the invention.As shown in Figure 1, one section of pickling wire packing 2 is equipped with in pickling separating tank 1 bottom, and top is equipped with one section and is separated at least 500mm of being separated by between wire packing 3, two sections of wire packings; New sulfuric acid is from entering near being separated wire packing 3 side between two-layer wire packing, and alkylate enters from bottom, and after erosion control rectifier 4 rectification, two bursts of logistics enter pickling separating tank 1 with the form of adverse current; The pickling wire packing 2 of bottom can become drop or thread new sulfuric acid with two strands of material dispersions such as the alkylates carrying sulfuric ester secretly, and contact carrier is provided, greatly increase contact area and the contact probability of new sulfuric acid and sulfuric ester, make its abundant contact lysis, thus be conducive to, in sulfuric ester vitriolization, assembling and settling down; The separation wire packing 3 on top effectively can tackle the sulfuric acid that coalescence is separated more than 95%, obtains the alkylate containing a small amount of sulfuric acid; Alkylate (alkanes and a small amount of sulfuric acid) after pickling is separated is from pickling separating tank 1 Base top contact; The sulfuric acid settled down and sulfuric ester and after enrichment, be sent back to pickling slurry tank or alkylation reactor or arrange outward bottom pickling separating tank 1; Alkylate containing a small amount of sulfuric acid can be sent to primary acids hydrocarbon tripping device 7 and carry out roughing out; Can through uniform fluid distribution cowling panel 8 after entering primary acids hydrocarbon tripping device 7, carry out roughing out through two section fibre film beds 8 and 9 subsequently, the acid concentration in alkylate reduces further, mainly eliminates the Large stone sulfuric acid carried secretly; Enter secondary acid hydrocarbon tripping device 10 subsequently again and continue coalescence separation, through uniform fluid distribution cowling panel 11, carry out fine separation through two section fibre membrane filtration filter core material 11 and 12 subsequently, the acid content in alkylate is down to 10 ㎎ below/㎏, mainly eliminates the small particle size sulfuric acid carried secretly; Pickling slurry tank or alkylation reactor can be sent back to after the sulfuric acid enrichment that acid hydrocarbon tripping device is separated or arrange outward; For remaining, extremely trace, sulfuric acid that particle diameter is less will be conveyed to adsorption unit 13 and remove, sulfuric acid concentration, built with exchange adsorption resin bed 14, can be dropped to 1 ㎎/㎏ by adsorption unit 13, even lower; From the almost all Ex-alls of the sulfuric acid adsorption unit 13 alkylate out, meet next stage processing requirement, deisobutanizer or next stage technique can be conveyed to.
Fig. 2 is alkylate desulfurization deacidifying process schematic flow sheet according to another implementation of the invention.As shown in Figure 2, after two bursts of logistics such as new sulfuric acid and the liquid alkylate containing sulfuric acid and sulfuric ester etc. enter the abundant mixing of mixing tank 6 with the form of cross-flow under the promotion of recycle pump 5, after erosion control rectifier 4 rectification, pickling separating tank 1 is entered; The pickling wire packing 2 of pickling separating tank 1 bottom can become drop or thread new sulfuric acid with two strands of material dispersions such as the alkylates carrying sulfuric ester secretly, and contact carrier is provided, greatly increase contact area and the contact probability of new sulfuric acid and sulfuric ester, make its abundant contact lysis, thus be conducive to, in sulfuric ester vitriolization, assembling and settling down; The separation wire packing 3 on pickling separating tank 1 top effectively can tackle the sulfuric acid of coalescence separating most, obtains the alkylate containing a small amount of sulfuric acid; After pickling is separated, alkylate (alkanes and a small amount of sulfuric acid) is from pickling separating tank 1 Base top contact; The sulfuric acid settled down and sulfuric ester after enrichment, are sent back to pickling slurry tank or alkylation reactor or arrange outward bottom pickling separating tank 1; Alkylate containing a small amount of sulfuric acid can be sent to primary acids hydrocarbon tripping device 7 and carry out roughing out; Can through uniform fluid distribution cowling panel 8 after entering primary acids hydrocarbon tripping device 7, carry out roughing out through two section fibre film beds 9 subsequently, the acid concentration in alkylate reduces further, mainly eliminates the Large stone sulfuric acid carried secretly; Enter secondary acid hydrocarbon tripping device 10 subsequently again and continue coalescence separation, through uniform fluid distribution cowling panel 11, carry out fine separation through two section fibre membrane filtration filter cores 12 subsequently, the acid content in alkylate is down to 10 ㎎ below/㎏, mainly eliminates the small particle size sulfuric acid carried secretly; Pickling slurry tank or alkylation reactor can be sent back to after the sulfuric acid enrichment that acid hydrocarbon tripping device is separated or arrange outward; To be conveyed to adsorption unit 13 for the sulfuric acid that particle diameter is less to remove, sulfuric acid concentration, built with exchange adsorption resin bed 14, can be dropped to 1 ㎎/㎏ by adsorption unit 13, even lower; From the almost all Ex-alls of the sulfuric acid adsorption unit 13 alkylate out, meet next stage processing requirement and can be conveyed to deisobutanizer or next stage technique.
Fig. 3 is the alkylate desulfurization deacidifying process schematic flow sheet according to yet further embodiment of the invention.As shown in Figure 3, after two bursts of logistics such as new sulfuric acid and the liquid alkylate containing sulfuric acid and sulfuric ester etc. enter the abundant mixing of mixing tank 6 with the form of cross-flow under the promotion of recycle pump 5, after erosion control rectifier 4 rectification, pickling separating tank 1 is entered; Being separated wire packing 3 and can providing contact carrier of the pickling wire packing 2 of pickling separating tank 1 bottom and top, increase contact area and the contact probability of new sulfuric acid and sulfuric ester, make its abundant contact lysis, thus be conducive in sulfuric ester vitriolization, and by coalescence effect removing sulfuric ester and most sulfuric acid, obtain the alkylate containing a small amount of sulfuric acid; After pickling is separated, alkylate (alkanes and a small amount of sulfuric acid) is from pickling separating tank 1 Base top contact; The sulfuric acid settled down and sulfuric ester after enrichment, are sent back to pickling slurry tank or alkylation reactor or arrange outward bottom pickling separating tank 1; Alkylate containing a small amount of sulfuric acid can be sent to primary acids hydrocarbon tripping device 7 and carry out roughing out; Can through uniform fluid distribution cowling panel 8 after entering primary acids hydrocarbon tripping device 7, carry out roughing out through two section fibre film beds 9 subsequently, the acid concentration in alkylate reduces further, mainly eliminates the Large stone sulfuric acid carried secretly; Enter secondary acid hydrocarbon tripping device 10 subsequently again and continue coalescence separation, through uniform fluid distribution cowling panel 11, carry out fine separation through two section fibre membrane filtration filter cores 12 subsequently, the acid content in alkylate is down to 10 ㎎ below/㎏, mainly eliminates the small particle size sulfuric acid carried secretly; Pickling slurry tank or alkylation reactor can be sent back to after the sulfuric acid enrichment that acid hydrocarbon tripping device is separated or arrange outward; To be conveyed to adsorption unit 13 for the sulfuric acid that particle diameter is less to remove, sulfuric acid concentration, built with exchange adsorption resin bed 14, can be dropped to 1 ㎎/㎏ by adsorption unit 13, even lower; From the almost all Ex-alls of the sulfuric acid adsorption unit 13 alkylate out, meet next stage processing requirement and can be conveyed to deisobutanizer or next stage technique.
The major advantage of method and apparatus of the present invention is:
Four kinds of separation methods such as gravity settling, coalescence separation, tunica fibrosa separation, fractionation by adsorption and process for modifying surface effectively combine by the present invention, and the separation of the acid to entrained with in alkylate is realized targetedly by stage trapping, different acid concentrations can be adapted to, there is very high separation efficiency and processing power, effectively can remove the sulfuric acid and sulfuric ester carried secretly in alkylate, make its content meet the requirement of next stage production technique; Its process does not need washing and alkali cleaning not to need to add any catalyzer yet, simplify alkylation production process, thus overcome washing, alkali cleaning and add any catalyzer problem is affected on subordinate's process unit, shorten flow process, decrease investment, save energy consumption.
embodiment
The present invention is set forth further below in conjunction with specific embodiment.But, should be understood that these embodiments only do not form limitation of the scope of the invention for illustration of the present invention.The test method of unreceipted actual conditions in the following example, usually conveniently condition, or according to the condition that manufacturer advises.Except as otherwise noted, all per-cent and number are by weight.
embodiment 1:
Shandong petro-chemical corporation has tried out alkylate desulfurization deacidifying device of the present invention, is separated, to ensure safety and the optimized production process of downstream production equipment, reduces cost to impurity such as sulfuric acid contained in its alkylation reaction product and sulfuric esters.
It specifically operates and effect is described below:
Alkylate desulfurization deacidification significant parameter: pickling separating tank operating pressure is 0.5MPa, supplementary new sulfuric acid=98 % by weight, alkylate treatment capacity is 13t/h, and wherein sulfuric acid content is 15 % by weight, sulfuric ester=2 ~ 3 % by weight.
Pickling separating tank design physical parameter has been shown in following table 1:
Table 1
First step acid hydrocarbon tripping device design variable has been shown in following table 2:
Table 2
Implementation process:
Technical process as shown in Figure 1.
New sulfuric acid is from entering near being separated wire packing side between two-layer wire packing, and liquid alkylate enters from bottom, and two bursts of logistics enter pickling separating tank with the form of adverse current.On pickling wire packing, most of sulfuric ester and the abundant contact lysis of new sulfuric acid, and settle down to pickling tank as heavy phase together with sulfuric acid.Alkylate as light phase moves up to the separation wire packing on top, and the sulfuric acid that major part is entrained in alkylate is separated by coalescence.The base product carrying a small amount of sulfuric acid secretly is sent to primary acids hydrocarbon tripping device from pickling separating tank top, first carries out passing two section fibre film beds after rectification through uniform cowling panel, isolates the sulfuric acid of macrobead particle diameter; Alkylate after purification is exported by primary acids hydrocarbon tripping device oil phase and enters secondary acid hydrocarbon tripping device, through two section fibre membrane filtration filter cores after uniform cowling panel again rectification, isolates the sulfuric acid of small-particle particle diameter; The alkylate that secondary acid hydrocarbon tripping device oil phase exports out enters adsorption unit, adsorbs remaining and micro-sulfuric acid, enters next stage technique subsequently.
The liquid acids hydrocarbon mixture of smooth flow enters pickling separating tank after erosion control rectifier rectification, and then enters primary acids hydrocarbon tripping device and secondary acid hydrocarbon tripping device.Wherein pickling separating tank bottom pickling wire packing and upper part are worked out according to certain way from wire packing by 316L steel fiber (purchased from BaoShan Steel Group Co., Ltd), and just the Fibre diameter of the two is different with depth of packing.The Fibrous membrane filtration filter core of the tunica fibrosa bed of primary acids hydrocarbon tripping device inside and secondary acid hydrocarbon tripping device inside by 316L steel fiber and polytetrafluoroethylene fiber according to a certain percentage, certain way works out.
Interpretation of result:
Through using device of the present invention, pickling is separated abhiseca portion sulfuric acid content about 0.1% ~ 0.4%, sulfuric ester eliminates substantially, in the alkylate of primary acids hydrocarbon tripping device oil phase outlet, sulfuric acid concentration is about 100 ㎎/㎏, in the alkylate of secondary acid hydrocarbon tripping device oil phase outlet, sulfuric acid concentration is less than 10 ㎎/㎏, by in adsorption unit alkylate out almost inspection do not measure sulfuric acid content, fully meet the requirement of downstream production technique.
embodiment 2:
Alkylate desulfurization deacidifying device of the present invention tried out by petro-chemical corporation of Hebei province alkylation pilot plant, the impurity such as sulfuric acid contained in its alkylation reaction product and sulfuric ester are separated, to ensure safety and the optimized production process of downstream production equipment, reduce cost.
It specifically operates and effect is described below:
Alkylate desulfurization deacidification significant parameter: pickling separating tank operating pressure is 0.6MPa, supplementary new sulfuric acid=98 % by weight, alkylate treatment capacity is 500L/h, wherein sulfuric acid content=18 % by weight, sulfuric ester=1 ~ 2.5 % by weight.
Implementation process:
Technical process as shown in Figure 2.
Under the promotion of recycle pump, fresh sulfuric acid and the alkylate containing sulfuric acid and sulfuric ester etc. enter pickling separating tank after mixing tank fully mixes.On pickling wire packing, most of sulfuric ester and the abundant contact lysis of new sulfuric acid, and settle down to pickling separating tank as heavy phase together with sulfuric acid.Alkylate as light phase moves up to the separation wire packing on top, and the sulfuric acid that the overwhelming majority is entrained in alkylate is separated by coalescence.The base product carrying a small amount of sulfuric acid secretly is sent to primary acids hydrocarbon tripping device from pickling tank top, first carries out passing two section fibre film beds after rectification through uniform cowling panel, isolates the sulfuric acid of macrobead particle diameter; Alkylate after purification is exported by primary acids hydrocarbon tripping device oil phase and enters secondary acid hydrocarbon tripping device, through two section fibre membrane filtration filter cores after uniform cowling panel again rectification, isolates the sulfuric acid of small-particle particle diameter; The alkylate that secondary acid hydrocarbon tripping device oil phase exports out meets processing requirement completely, directly enters next stage technique subsequently.
The liquid acids hydrocarbon mixture of smooth flow enters pickling separating tank after erosion control rectifier rectification, and then enters primary acids hydrocarbon tripping device and secondary acid hydrocarbon tripping device.The 316L wire (purchased from BaoShan Steel Group Co., Ltd) that wherein pickling wire packing in pickling separating tank bottom is 2mm by diameter is worked out according to certain way, and thickness is 200mm; Pickling separating tank upper part from wire packing by diameter be the 316L wire of 1mm and tetrafluoroethylene according to a certain percentage, certain way works out, thickness is 300mm; The tunica fibrosa bed of primary acids hydrocarbon tripping device inside by steel fiber, polytetrafluoroethylene fiber and polypropylene fibre according to a certain percentage, certain way works out, the Fibrous membrane filtration filter core of secondary acid hydrocarbon tripping device inside by polypropylene and polytetrafluoroethylene fiber according to a certain percentage, certain mode works out.
Interpretation of result:
Through using device of the present invention, pickling is separated abhiseca portion sulfuric acid content about 0.5%, sulfuric ester eliminates substantially, in the alkylate of primary acids hydrocarbon tripping device oil phase outlet, sulfuric acid concentration is about 50 ~ 300 ㎎/㎏, and in the alkylate of secondary acid hydrocarbon tripping device oil phase outlet, sulfuric acid concentration is all less than 6 ㎎/㎏; Fully meet the requirement of downstream production technique.
Illustrate in following table 3 that in industry spot pilot plant test, the some experimental data of sulfuric acid content imported and exported by first step acid hydrocarbon tripping device.
Table 3
Above-mentioned listed embodiment is only preferred embodiment of the present invention, is not used for limiting practical range of the present invention.Namely all equivalences done according to the content of the present patent application the scope of the claims change and modify, and all should be technology category of the present invention.
The all documents mentioned in the present invention are quoted as a reference all in this application, are just quoted separately as a reference as each section of document.In addition should be understood that those skilled in the art can make various changes or modifications the present invention after having read above-mentioned teachings of the present invention, these equivalent form of values fall within the application's appended claims limited range equally.
Claims (10)
1. a method for alkylate desulfurization depickling, the method comprises the following steps:
A alkylate and new sulfuric acid two strands of materials containing sulfuric acid and sulfuric ester of liquid state are sent into pickling separating tank (1) interior pickling with adverse current or cross-current flow by (), coalescence is separated;
B (), in the pickling wire packing (2) of pickling separating tank (1) bottom, sulfuric ester fully contacts with new sulfuric acid and dissolution extraction, the simultaneously separation of generation coalescence mutually; Sulfuric acid more than 50% in the sulfuric ester of vitriolization and alkylate settles down to pickling separating tank (1) bottom as heavy phase, delivers to pickling slurry tank or alkylation reactor or arrange outward after enrichment;
C () enters the separation wire packing (3) on pickling separating tank (1) top as the alkylate of light phase, wherein, in separation wire packing (3), be separated by coalescence as the sulfuric acid more than 95% in the alkylate of light phase, obtain the alkylate that sulfuric acid content is 0.01% ~ 1.0%; Sulfuric acid after coalescence is separated is settled down to pickling separating tank (1) bottom;
The sulfuric acid content of (d) gained be 0.01% ~ 1.0% alkylate be sent to sour hydrocarbon segregation section from pickling separating tank (1) top and carry out sour hydrocarbon separation, wherein, described sour hydrocarbon segregation section is single-stage or multistage sour hydrocarbon tripping device;
E () carries out roughing out and fine separation to the sulfuric acid that described sulfuric acid content is entrained with in the alkylate of 0.01% ~ 1.0% in sour hydrocarbon tripping device, obtain the alkylate of sulfuric acid content lower than 10 ㎎/㎏; Be conveyed to pickling slurry tank or alkylation reactor after separating sulfuric acid enrichment or arrange outward; And
F the sulfuric acid content of () gained is sent in adsorption unit (13) lower than the alkylate of 10 ㎎/㎏, to adsorb the sulfuric acid of remaining content lower than 10 ㎎/㎏, be removed the alkylate of sulfuric ester and sulfuric acid.
2. the method for claim 1, it is characterized in that, described step (a) also comprises: sending in pickling separating tank before (1) by the alkylate containing sulfuric acid and sulfuric ester of liquid state and new sulfuric acid two strands of materials with adverse current or cross-current flow, in mixing tank (6), make it fully mix.
3. method as claimed in claim 1 or 2, it is characterized in that, in step (d), described sour hydrocarbon segregation section is that two-stage acid hydrocarbon tripping device gradient is arranged, the alkylate that primary acids hydrocarbon tripping device (7) roughing out obtains directly is sent to secondary acid hydrocarbon tripping device (10) and carries out fine separation.
4. method as claimed in claim 1 or 2, it is characterized in that, in step (f), the sulfuric acid content of gained is sent in the adsorption unit (13) that exchange adsorption resin bed (14) are housed lower than the alkylate of 10 ㎎/㎏, to adsorb the sulfuric acid of remaining content lower than 10 ㎎/㎏, its sulfuric acid concentration is dropped to lower than 1 ㎎/㎏.
5. a device for alkylate desulfurization depickling, this device comprises:
Pickling separating tank (1), for send into liquid state wherein carry out pickling containing sulfuric acid with alkylate and new sulfuric acid two strands of materials of sulfuric ester, coalescence is separated;
At the pickling wire packing (2) of pickling separating tank (1) bottom, be provided for sulfuric ester and fully contact with fresh sulfuric acid and dissolution extraction, the simultaneously separation of generation coalescence mutually;
At the separation wire packing (3) on pickling separating tank (1) top, for making the sulfuric acid more than 95% in the alkylate after overpickling wire packing (2) be separated by coalescence, obtain the alkylate that sulfuric acid content is 0.01% ~ 1.0%;
The sour hydrocarbon segregation section be connected with pickling separating tank (1), wherein, described sour hydrocarbon segregation section is single-stage or multistage sour hydrocarbon tripping device, for to described sulfuric acid content be 0.01% ~ 1.0% alkylate in the sulfuric acid of entrained with carry out roughing out and fine separation, obtain the alkylate of sulfuric acid content lower than 10 ㎎/㎏;
The adsorption unit (13) be connected with sour hydrocarbon segregation section, for adsorbing the sulfuric acid of remaining content lower than 10 ㎎/㎏, be removed the alkylate of sulfuric ester and sulfuric acid.
6. device as claimed in claim 5, it is characterized in that, this device also comprises: the mixing tank (6) be connected with pickling separating tank (1), for the alkylate containing sulfuric acid and sulfuric ester of liquid state and new sulfuric acid two strands of materials being sent in pickling separating tanks before (1), it is made fully to mix.
7. the device as described in claim 5 or 6, it is characterized in that, described sour hydrocarbon segregation section is that two-stage acid hydrocarbon tripping device gradient is arranged, the alkylate that primary acids hydrocarbon tripping device (7) roughing out obtains directly is sent to connected secondary acid hydrocarbon tripping device (10) and carries out fine separation.
8. the device as described in claim 5 or 6, is characterized in that, described adsorption unit (13) is equipped with exchange adsorption resin bed (14), for adsorbing the sulfuric acid of remaining content lower than 10 ㎎/㎏, its sulfuric acid concentration is dropped to lower than 1 ㎎/㎏.
9. the device as described in claim 5 or 6, is characterized in that, the voidage of described pickling wire packing (2) is greater than 90%, and screen fabric diameter is 0.3 ~ 4mm, and thickness is 100 ~ 300mm, is formed by polytetrafluoroethylene fiber and weaving metallic fibers; The voidage of described separation wire packing (3) is 80% ~ 90%, and screen fabric diameter is 0.1 ~ 3mm, and thickness is greater than 200mm, and its first half section is formed by tetrafluoroethylene and weaving metallic fibers, and the second half section is formed by polypropylene and weaving metallic fibers; Further, described pickling wire packing (2) and the shortest distance be separated between wire packing (3) are 0.3 ~ 4D, and are no less than 500mm, and wherein D is the internal diameter of pickling separator pot (1); Mixed solution opening for feed or new sulfuric acid opening for feed are positioned between pickling wire packing (2) and separation wire packing (3) that in the middle part of space place on the upper side; Described opening for feed place arranges erosion control rectifier (4), and described erosion control rectifier (4) is selected from the one in perforated tube, take-off pipe, erosion control baffle plate, swash plate and column blade.
10. the device as described in claim 5 or 6, it is characterized in that, two section fibre film beds (9) are equipped with in the inside of described primary acids hydrocarbon tripping device (7), the porosity of described tunica fibrosa bed (9) is 80% ~ 90%, Fibre diameter is less than 200 μm, and thickness is greater than 200mm; Wherein, the first half section of every section fibre film bed (9) is formed by teflon fibre braided, and the second half section is formed by one or more braidings be selected from steel fiber, polypropylene fibre, polytetrafluoroethylene fiber and trevira; Two sections of Fibrous membrane filtration filter cores (12) made through super nano fibrous membrane that is hydrophilic or super oleophylic modification are equipped with in the inside of described secondary acid hydrocarbon tripping device (10), the porosity of described tunica fibrosa is less than 80%, Fibre diameter is less than 100 μm, and thickness is greater than 50mm; Wherein, described nano fibrous membrane is by being selected from one or more in steel fiber, polytetrafluoroethylene fiber, polypropylene fibre and trevira through modified braiding; And, interval shortest distance between the tunica fibrosa bed (9) that described primary acids hydrocarbon tripping device (7) is inner and between the Fibrous membrane filtration filter core (12) of secondary acid hydrocarbon tripping device (10) inside is 0.1 ~ 0.5D, and is no less than 500mm; The shortest distance of primary acids hydrocarbon tripping device (7) and secondary acid hydrocarbon tripping device (10) below settling section is 0.3 ~ 2D ', and be no less than 1000mm, wherein D ' for primary acids hydrocarbon tripping device (7) and secondary acid hydrocarbon tripping device (10) internal diameter; The inside ingress of described primary acids hydrocarbon tripping device (7) and secondary acid hydrocarbon tripping device (10) has uniform fluid distribution cowling panel (8) and (11) respectively, and described uniform fluid distribution cowling panel (8) and (11) are the uniform perforate slab of porous.
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| CN112920844A (en) * | 2021-01-20 | 2021-06-08 | 华东理工大学 | Device and method for improving quality of alkylated oil product |
| CN112920844B (en) * | 2021-01-20 | 2022-01-07 | 华东理工大学 | Device and method for improving quality of alkylated oil product |
| CN113019338A (en) * | 2021-02-04 | 2021-06-25 | 合瑞康流体技术(北京)有限公司 | Method for removing organic acid from hydrocarbon oxidation liquid |
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| CN104927907B (en) | 2017-02-01 |
| WO2017000516A1 (en) | 2017-01-05 |
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