CN105251433A - Liquid acid alkylation reactor and application method thereof - Google Patents
Liquid acid alkylation reactor and application method thereof Download PDFInfo
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Abstract
The invention relates to a liquid acid alkylation reactor and an application method thereof. The liquid acid alkylation reactor comprises a mixing zone, a reaction zone and a liquid collection zone from top to bottom, wherein at least a group of jet flow mixers is arranged inside the mixing zone, each group of the jet flow mixers comprises at least two ejectors having the symmetrical center at the same horizontal plane, the liquid collection zone is connected to the inlet of the jet flow mixer through a circulation pump, the reaction zone is provided with a gas outlet, and a liquid phase product outlet is arrange below the gas outlet. According to the present invention, the liquid acid alkylation reactor is suitable for the alkylation reaction of the liquid acid adopted as the catalyst, and has characteristics of simple and compact structure, low investment, easy operation and maintenance, and power saving.
Description
Technical field
The present invention relates to a kind of reactor of petrochemical industry, more particularly, relate to the reactor that a kind of isoparaffin and alkene carry out alkylated reaction under liquid acid catalysis.
Background technology
The alkylated reaction of isoparaffin and alkene, mainly refers to the alkylated reaction of isobutane and butene, and the essence of its reaction is under the existence of acidic catalyst, alkane molecule is added to the organic addition reaction on olefin hydrocarbon molecules.Alkylated reaction is an important technical process in petrochemical industry.Isobutane and butene reacts the isomery C of generation under strong acid catalyst effect
8alkane, is called gasoline alkylate.Gasoline alkylate has high-octane rating (RON94 ~ 96) and low Reid vapour pressure, and sulfur content, olefin(e) centent are extremely low, without benzene and aromatic hydrocarbons, is excellent gasoline blending component.Adopt reformulated gasoline as petrolic fuel, will greatly relax because Extract from Gasoline-fueled Vehicle discharges the urban air pollution caused.With regard to this meaning, gasoline alkylate is a kind of eco-friendly petrochemicals.
The catalyst that current industrial alkylated reaction adopts is mainly the liquid strong acid such as the concentrated sulfuric acid or hydrofluoric acid.Typical alkylation reaction technique still adopts horizontal agitated vessel reactor, and iso-butane and butene alkylation are the reactions of typical Two Liquid Phases, and interphase mass transfer speed determines Global reaction Rate.In this type of reaction system, when two-phase fully disperses mixing, alkene can realize transforming completely very soon, if the reaction time is long, what start to be formed has high-octane trimethylpentane (TMP) and will continue contact with highly acid catalyst, and TMP can be caused to the isomerization of low-octane dimethylhexane (DMH).Therefore, convention stir reactor is adopted to be difficult to realize obtaining high-octane product while acquisition high conversion.
The alkylated reaction of isoparaffin and alkene belongs to the liquid that do not dissolve each other-liquid two phase reaction, and the mixed effect of the liquid that do not dissolve each other-liquid two-phase is to the conversion ratio of liquid-liquid reactions and selectively have material impact.Current existing liquid-liquid two-phase mixtures reactor mainly contains stirred tank, static mixer, impinging streams mixer and ejector mixing etc.
CN200520078557.3 discloses the horizontal reactor in a kind of sulfuric acid process alkylation process, and main body is a horizontal pressure vessel, has the propeller at an Inner eycle sleeve, a shell and tube heat-obtaining tube bank, an end socket place.Reaction feed and recycle acid enter the suction side of paddle, and under the driving of paddle, reaction mass spreads rapidly and forms emulsion with acid, emulsion ceaselessly high-speed circulating reacting in reactor.In the discharge side of reactor, a part of emulsion is discharged to acid settler, carries out the separation of acid.Acid is sunk to bottom settling tank because proportion is comparatively large, then turns back to the suction side of paddle.Reactant mixed process completes in whole horizontal reactor, and the bulk of mixing is whole reactor, and the time, appropriateness was at 20 ~ 30 minutes, belonged to the category of micromixing.Back-mixing in this reactor is comparatively large, is unfavorable for improving the selective of reaction.US6194625B1 discloses a kind of alkylation reactor of sectional feeding, reaction zone is separated into the section of several series connection, a few stock is divided into by fresh feed not introduce each reaction section, the sour hydrocarbon emulsion recycled is then series flow, adopts churned mechanically mode to mix in each reaction section.Although this structure overcomes the larger problem of back-mixing, structure is too complicated.In addition, these two kinds of reactors all have employed fixed electrical machinery and drive paddle, are easy to the anti-raw leakage because of poorly sealed.
CN100348559C discloses a kind of liquid-liquid phase alkylation reaction technique method completing ionic liquid-catalyzed isoparaffin and alkene in hypergravity whirligig.The rotating bed reaction apparatus that this invention provides comprises: reactor shell, housing there are charge door and discharging opening, reactor shell is built with by rotor, the RPB of packing layer composition, wherein there is feed pipe, feed liquid shower nozzle, RPB is positioned at housing upper, lower housing portion is fluid reservoir, the heart is equipped with agitating device in the reactor, can stir the reaction mass of fluid reservoir, fluid reservoir and feed liquid circulating pump connect and compose revolving bed recirculation reactor, the suction line porch of circulating pump is connected with blender, have alkane alkene feed liquid suction inlet and ionic liquid import on the mixer, reacted part feed liquid and ionic liquid mix at blender, the discharging opening of circulating pump connects the feed pipe of RPB, circulating pump is delivered to RPB mixed feed liquid and is carried out circular response, fluid reservoir is equipped with liquid level control gage, control the time of staying of feed liquid.The reactor of this structure can strengthen mixing between reactant with sour hydrocarbon emulsion, but structure is still too complicated, is not easy to expand the scale of production.
US3281213 proposes a kind of vertical alkylation reactor, its main body is a riser, riser is connected with a horizontal tank, horizontal tank is built with sour hydrocarbon emulsion, the isoparaffin and the alkene that participate in reaction are sprayed into by the nozzle bottom riser, spraying the gravitation caused drives the sour hydrocarbon emulsion in horizontal tank to enter riser together, and namely reaction is carried out in this root riser reactor.Riser top is connected with a knockout drum, for the separation of product.Sour hydrocarbon emulsion after separation circulates the horizontal tank entered bottom riser.This structure does not adopt mechanical transmission member, solves the series of problems that built-in stirring blade brings.But sour hydrocarbon emulsion can not be satisfactory with mixing of other reactants in riser, in addition, whole reactor assembly have employed a riser, two horizontal tanks and a down-comer, and equipment is huge, structure is also compact not.
Summary of the invention
One of the technical problem to be solved in the present invention is to provide the alkylated reaction of a kind of liquid acid alkylation reactor for isoparaffin and alkene.
Two of the technical problem to be solved in the present invention is to provide a kind of application process of liquid acid alkylation reactor.
A kind of liquid acid alkylation reactor provided by the invention, comprise mixed zone, reaction zone and liquid collecting zone from top to bottom, at least one group of injection stream blender is set in described mixed zone, often organizing injection stream blender is centrosymmetric injector at least two same levels, the entrance of the injection stream blender described in described liquid collecting zone connects through circulating pump, described reaction zone arranges gas vent, arranges liquid product outlet under described gas vent.
In liquid acid alkylation reactor provided by the invention, the height of described mixed zone is 10% ~ 20% of height for reactor, and the height of described liquid collecting zone is 10% ~ 30% of height for reactor.
In liquid acid alkylation reactor provided by the invention, preferably, conical flow guiding cylinder is set in described reaction zone.Described conical flow guiding cylinder be arranged on 40% ~ 50% of height for reactor from the bottom to top, the height of described conical flow guiding cylinder is 5% ~ 10% of height for reactor.
In liquid acid alkylation reactor provided by the invention, one or more groups injection stream blender is set in described mixed zone.Many group injection stream blenders are preferably set, many groups injection stream blender can arrange by single or multiple lift, often organizing injection stream blender is centrosymmetric injector at least two same levels, wherein injector and reactor wall junction are provided with centering adjusting device, to ensure that the mixed material penetrated from different injector can complete head-on collision in the same area; In course of reaction, one group of injection stream blender feeding manner can be selected, also can select the charging simultaneously of many group injection stream blenders.
In liquid acid alkylation reactor provided by the invention, preferably, described injector has two-way entrance at least, and a road is feed(raw material)inlet, and another road is the circulating fluid acid entrance from described reactor liquid collecting zone.Wherein, the fluid flow direction of described feed(raw material)inlet is vertical with the flow direction of sprue Inner eycle liquid acid in injector and crossing.More preferably, described feed(raw material)inlet arranges nozzle, alkylated reaction raw material sprays into injector through nozzle, and with injector sprue in from circulating fluid acid entrance circulation fluid there is strong immixture, alkylated reaction raw material and the mixed mixed material of liquid acid are sprayed by injector again, there is strong shock in the material of two injector ejections in one group of injection stream blender, makes alkene in mixed material, reach microcosmic admixture in described mixed zone.
In liquid acid alkylation reactor provided by the invention, the outlet of two injectors in one group of described injection stream blender is at a distance of 2.0mm-50mm, preferably 5.0mm-20mm.
In liquid acid alkylation reactor provided by the invention, reactor shell can be cylinder type (as shown in Figure 1), and can be also square tubular, the present invention be not limited in this respect.Described liquefied alkyl reactor shell top and bottom can adopt plate seal or end socket hermetically-sealed construction, preferably adopt end socket hermetically-sealed construction, so that cleaning reactor is inner.
In liquid acid alkylation reactor provided by the invention, described gas vent normally controls more than liquid level at reaction zone, is arranged on 35% ~ 45% of height for reactor from the bottom to top.The pipeline of the gas vent described in connection is arranged back pressure pressure valve.Described liquid-phase reaction product outlet is arranged on reaction zone and normally controls below liquid level, and preferably the normal middle and upper part controlling liquid level, is arranged on 15% ~ 25% of height for reactor from the bottom to top.
In liquid acid alkylation reactor provided by the invention, described circulating pump is acid corrosion-resistant type centrifugal pump.
In liquid acid alkylation reactor provided by the invention, the material of described reactor shell is ordinary carbon steel.
In liquid acid alkylation reactor provided by the invention, preferably, described reactor head arranges circulation cryogen entrance.
In liquid acid alkylation reactor provided by the invention, described liquid collecting zone arranges recycle acid emulsion outlet, and the yogurt liquid of sedimentation enrichment in liquid collecting zone returns described injection stream mixer entrance through described recycle acid emulsion outlet, circulating pump.Wherein, described recycle acid emulsion outlet can arrange one or more.Preferably, described recycle acid emulsion outlet is arranged on bottom liquid collecting zone.Recycle acid emulsion pipeline can arrange one or more, can adopt a circulating pump or multiple circulating pump, and circulation line and circulating pump generally adopt a set of or two covers.Above-mentioned concrete structure and quantity according to reactor scale and material properties, can be determined by the design of this area general knowledge.
In liquid acid alkylation reactor provided by the invention, described reactor bottom is provided with liquid level gauge, for checking liquid level in reactor.
A kind of liquid acid alkylation provided by the invention, adopt above-mentioned liquid acid alkylation reactor, liquid acid catalyst and alkylated reaction raw material are introduced injector through the entrance of injection stream blender, the material of two injector ejections of one group of injection stream blender occurs strongly clash into and mix in mixed zone, mixed material enters reaction zone and liquid collecting zone, and there is alkylated reaction, reaction mass is after sedimentation, the liquid collecting zone enriched liquid acid catalyst of reactor bottom, return after circulating pump supercharging in injection stream blender and reuse, the hydrocarbon material flow of vaporization is discharged through gas vent, product enters piece-rate system through liquid product outlet discharge.
In method provided by the invention, described liquid acid catalyst is the concentrated sulfuric acid, strong acidic ion liquid or the mixed acid containing the concentrated sulfuric acid.Wherein, described is 85wt% ~ 98wt% containing concentrated sulfuric acid content in the mixed acid of the concentrated sulfuric acid, and all the other are one or more in TFMS, phosphoric acid and formic acid.
In method provided by the invention, described alkylated reaction raw material is the C containing iso-butane
3~ C
5olefine fraction, the alkane alkene mol ratio in described alkylated reaction raw material is 5.0 ~ 15:1.0, is preferably 6.0 ~ 12:1.0, is more preferably 8.0 ~ 10:1.0.
In method provided by the invention, the operating condition of described liquid acid alkylation reactor is: pressure is 0.05 ~ 1.2MPa, preferably 0.1 ~ 0.3MPa; Temperature is-4 ~ 15 DEG C, preferably-3 ~ 7 DEG C.
In method provided by the invention, preferably, product is discharged through liquid product outlet, enter sour hydrocarbon knockout drum, after gravity settling separation, in the liquid acid catalyst Returning reactor bottom sour hydrocarbon knockout drum, isolated hydrocarbon mixture enters next cleaning procedure.
In method provided by the invention, the hydrocarbon material flow of described vaporization is discharged through gas vent, and the vaporization alkane of discharge continues reaction in Returning reactor after compressor compression condensation.
In method provided by the invention, in alkylation reactor, exothermic heat of reaction heat-obtaining adopts isoparaffin spontaneous evaporation refrigeration modes, the alkane of vaporization discharges reactor through top, gas-liquid separation gas phase zone, discharge on air pipe and Back pressure control valve is housed, control reactor pressure at 0.05 ~ 1.2MPa, preferably adopt 0.1 ~ 0.3MPa.Vaporization alkane Returning reactor after compressor compression condensation of discharging, circulation cryogen returns entrance can be arranged on any position of reactor, preferably adopts and is arranged on end socket middle position, top, mixed zone.
The object of usual most alkylation is that reaction generates alkylate by isoparaffin (or aromatic hydrocarbons) and light olefin and acidic catalyst close contact.In petroleum refining industry, the acid catalyzed alkyation of aliphatic hydrocarbon and alkene is well-known method.Usual indication alkylation refers to that isoparaffin and alkene are under strong acid catalyst, produces if octane number is the process of gasoline-range cut higher than raw material, boiling range.Alkylation involved in the present invention is generally iso-butane and C
3~ C
5the reaction of olefine fraction, is specially adapted to the reaction of iso-butane and C 4 olefin.
The liquid acid alkylation process that it is catalyst that above-mentioned reactor is applicable to the concentrated sulfuric acid, strong acidic ion liquid and the mixed acid based on the concentrated sulfuric acid, preferably adopts concentration to be the concentrated sulfuric acid of 90% ~ 99.2% and the mixed acid based on the concentrated sulfuric acid.
The beneficial effect of liquid acid alkylation reactor provided by the invention and application process is:
In liquid acid alkylation reactor provided by the invention, injection stream blender is set, utilize in injection stream blender and spray the mixed intensified rapid dispersion of alkene in sour hydrocarbon emulsion, the fluid of preliminary mixing ejects impingement mix once more, improve the initial microcosmic mixed-level of liquid phase, accelerate alkylated reaction speed macroscopically, thus improve the selective of reaction conversion ratio and product, be more suitable for plant-scale course of reaction.Liquid acid alkylation reactor provided by the invention adopts two-phase or multiphase injection mixing directly to clash into reaction logistics the mode combined, and avoid the energy loss that in stirred autoclave, liquid and wall clash into, capacity usage ratio is high.In liquid acid alkylation reactor provided by the invention, inner member is few, and frame for movement is simple, and be convenient to processing, cleaning, equipment investment is low.Liquid acid alkylation reactor provided by the invention all adopts static seal, and avoid the shortcoming that rotary part in traditional stirred tank reactor weakens sealing property, sealing property is better, is specially adapted to mixing and the reaction of inflammable, explosive and corrosive materials.
The alkylated reaction that it is catalyst that liquid acid alkylation reactor provided by the invention is specially adapted to sulfuric acid, ionic liquid and the mixed acid based on sulfuric acid.
Accompanying drawing explanation
Accompanying drawing 1 is liquid acid alkylation reactor structural representation provided by the invention;
Accompanying drawing 2 is liquid acid alkylation reactor A-A ' profile provided by the invention.
Wherein: 1-reactor shell; 2-liquid collecting zone; 3-injection stream blender; 4-circulating pump; 5-gas vent; 6-liquid product exports; 7-mixed zone; 8-reaction zone; 9-circulation cryogen entrance; 10-recycle acid exports; 11-recycle acid unloads outlet; 12-feed(raw material)inlet; 13-injector guide shell; 14-conical flow guiding cylinder.
Detailed description of the invention
Describe the specific embodiment of the present invention in detail below in conjunction with accompanying drawing, but the present invention is not therefore subject to any restriction.
Accompanying drawing 1 is liquid acid alkylation reactor structural representation provided by the invention, as shown in Figure 1, described liquid acid alkylation reactor comprises mixed zone 7, reaction zone 8 and liquid collecting zone 2 from top to bottom, at least one group of injection stream blender 3 is set in described mixed zone 7, often organize injection stream blender 3 for centrosymmetric injector (such as can adopt Venturi type jet mixer) at least two same levels, for strengthening mixed effect, described injector outlet is preferably provided with injector guide shell 13; Described liquid collecting zone 2 connects the entrance of described jet mixer 3 through circulating pump 4, and described reaction zone arranges gas vent 5, arranges liquid product outlet 6 under described gas vent 5.In preferably described reaction zone 8, conical flow guiding cylinder 14 is set.
Accompanying drawing 2 is the A-A ' profile of liquid acid alkylation reactor, as visible in accompanying drawing 2, and often organizing injection stream blender 3 is centrosymmetric injector at least two same levels.
The identical injection stream blender identical with length of diameter is coaxial, symmetrical to be between two distributed in the middle part of mixed zone, injection stream blender can multilayer arrange, injection stream blender and reactor wall junction are provided with centering adjusting device, to ensure that the mixed material penetrated from different injector can complete head-on collision in the same area.Described top, mixed zone is ellipse end socket, adopts bolt presses structure, so that cleaning reactor interior injectors.The annexes such as ellipse end socket place connection safety valve, thermocouple thermometer, Pressure gauge.Preferably arrange circulation cryogen entrance 9 at liquid acid alkylation reactor top, described circulation cryogen entrance 9 enters reactor, to control temperature of reactor by ellipse end socket top.Reaction zone barrel arranges gas vent 5.Liquid product outlet 6 is provided with in gas vent bottom.The bottom of the liquid collecting zone 2 bottom liquid acid alkylation reactor is provided with liquid level gauge, for checking liquid level in still.Liquid acid alkylation reactor bottommost is provided with recycle acid outlet 10 and is connected with circulating pump 4, and pump discharge recycle acid hydrocarbon emulsion turns back to the sprue of injection stream blender 3 through pipeline.
Liquid acid alkylation reaction method provided by the invention, adopt above-mentioned liquid acid alkylation reactor, liquid acid catalyst and alkylated reaction raw material are squeezed into one group of injection stream blender sprue through circulating pump, reactor mixed zone 7 is entered after the mixing of injection stream blender, occur strongly clash into and mix in mixed zone 7, mixed material enters reaction zone 8, and after conical flow guiding cylinder water conservancy diversion, enter the liquid collecting zone 2 of reactor bottom, mixed material in liquid collecting zone 2 squeezes into injection stream blender through circulating pump again, circulation a period of time mixing of materials like this is complete, another strand of alkane alkene vertically enters throat of injector neck than the carbon 4 liquid gas reaction mass for 8:1, shout neck and have one group of 4 homodisperse aperture, alkene sprays into injector sprue through aperture and strong immixture occurs recycle acid emulsion, there is strong shock in head-on collision district in the mixed material of ejection, makes alkene in mixed material, reach microcosmic admixture and alkylated reaction occurs again.Reacted material enters liquid collecting zone 2, the hydrocarbon material flow (being mainly iso-butane) of vaporization is discharged through gas vent 5, control reactor pressure at about 0.12MPa, gas phase iso-butane after compressor compression condensation through circulation cryogen entrance 9 Returning reactor; Alkylation liquid product enters piece-rate system through liquid product outlet 6.Preferred alkyl liquid product is discharged and is entered sour hydrocarbon knockout drum, and after gravity settling separation, reuse in the liquid acid emulsion Returning reactor of bottom, isolated hydrocarbon mixture enters next cleaning procedure.
As seen from the above technical solution provided by the invention, the alkylation reactor that the present invention proposes adopts the reacted material that arranges of many group collision type jet mixers and sour hydrocarbon emulsion circulating pump to carry out circular response again, enhance alkene initial microcosmic mixing dispersion effect in recycle acid hydrocarbon emulsion, suppress the carrying out of alkylation side reaction, thus under product has high-octane prerequisite after ensureing reaction, reduce the internal circulating load of the iso-butane entered in material, reduce the energy consumption of device, there is very strong industrial applicibility.
The above; be only the present invention's preferably detailed description of the invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Illustrated concrete structure and the effect of liquid acid alkylation reactor provided by the invention below by embodiment, but the present invention is not therefore subject to any restriction.
Embodiment 1
The structure of liquid acid alkylation reactor as shown in Figure 1, wherein, reactor diameter is 2m, be highly 15m, mixed zone height is 2m, arranges 2 groups of injection stream blenders in mixed zone, and the position of gas vent is from reactor bottom 5m place, the position of liquid product outlet is from reactor bottom 1.5m place, and the height of conical flow guiding cylinder is from reactor bottom 6.5m place.
Adopt aforesaid liquid acid alkylation reactor to carry out alkylated reaction, reaction raw materials is carbon 4 liquid gas, takes from Shijiangzhuang Oil-Refining Chemical Co., Ltd..Mass percent consists of: propane 0.098%, iso-butane 39.36%, normal butane 13.51%, isobutene 1.39%, 1-butylene 14.70%, maleic 14.92%, anti-butylene 16.0%, pentane 0.022%.Alkane alkene is made into than the reaction feed for 8:1 with recycle isobutane, catalyst is the concentrated sulfuric acid of concentration 98.5%, the concentrated sulfuric acid and iso-butane squeeze into injection stream blender sprue through circulating pump, carbon 4 liquid gas vertically enters throat of injector neck, shout neck and have 4 homodisperse apertures, carbon 4 liquid gas sprays into injector sprue through aperture, the concentrated sulfuric acid and iso-butane enter in liquid acid alkylation reactor after ejector mixing mixes with carbon 4 liquid gas, the mixed emulsion of reactor bottom squeezes into injection stream blender through circulating pump again, circulation a period of time mixing like this completely, in the mixed zone on reactor top, there is strong shock in head-on collision district in the mixed material of injection stream blender ejection, makes alkene in mixed material, reach microcosmic admixture again.Reacted material enters liquid collecting zone 2, and the hydrocarbon material flow of vaporization discharges reactor through gas vent 5, control reactor pressure at about 0.12MPa, gas phase iso-butane after compressor compression condensation through circulation cryogen entrance 9 Returning reactor; The alkylation liquid product of discharging enters sour hydrocarbon knockout drum through liquid product outlet 6, concentrated sulfuric acid Returning reactor after gravity settling separation, isolated hydrocarbon mixture enters next cleaning procedure, alkylate oil is obtained after distillation removes most of carbon Four composition, it is 190 DEG C that the alkylate oil obtained is done, RON value is 96.4, MON value is 94.1.
Embodiment 2
Adopt the liquid acid alkylation reactor in embodiment 1 to carry out alkylated reaction, reaction process and reaction raw materials with embodiment 1, difference to be liquid acid catalyst be 99.5% highly acid AlCl
3type ionic liquid (AlCl
3: (C
2h
5)
3nHCl=0.67) (production of Lanzhou Chemical Physics research institute of the Chinese Academy of Sciences), reaction raw materials is carbon 4 liquid gas, and source and composition are with embodiment 1.Be made into alkane alkene than the reaction feed for 6:1 with iso-butane, reactor pressure controls as 0.25MPa, and temperature is :-3 DEG C.Alkylation reaction product removes most of carbon Four composition through distillation and obtains alkylate oil, and it is 189 DEG C that the alkylate oil obtained is done, and RON value is 96.2, MON value is 93.9.
Claims (17)
1. a liquid acid alkylation reactor, it is characterized in that, described reactor comprises mixed zone, reaction zone and liquid collecting zone from top to bottom, at least one group of injection stream blender is set in described mixed zone, often organizing injection stream blender is centrosymmetric injector at least two same levels, the entrance of the injection stream blender described in described liquid collecting zone connects through circulating pump, described reaction zone arranges gas vent, arranges liquid product outlet under described gas vent.
2. according to the liquid acid alkylation reactor of claim 1, it is characterized in that, the height of described mixed zone is 10% ~ 20% of height for reactor, and the height of described liquid collecting zone is 10% ~ 30% of height for reactor.
3. according to the liquid acid alkylation reactor of claim 1, it is characterized in that, described reaction zone arranges conical flow guiding cylinder.
4., according to the liquid acid alkylation reactor of claim 3, it is characterized in that, described conical flow guiding cylinder be arranged on 40% ~ 50% of height for reactor from the bottom to top, the height of described conical flow guiding cylinder is 5% ~ 10% of height for reactor.
5. according to the liquid acid alkylation reactor of claim 1, it is characterized in that, described injector has two-way entrance at least, wherein a road is feed(raw material)inlet, another road is circulating fluid acid entrance, and the flow direction of described feed(raw material)inlet is vertical with circulating fluid acid solution flow path direction in injector and crossing.
6. according to the liquid acid alkylation reactor of claim 5, it is characterized in that, described feed(raw material)inlet arranges nozzle, and reaction raw materials sprays in injector through feed(raw material)inlet through nozzle, and strongly mixes from the circulating fluid acid of circulating fluid acid entrance with injector sprue.
7. according to the liquid acid alkylation reactor of claim 1, it is characterized in that, a pair injector outlet in one group of described injection stream blender is at a distance of 2.0mm-50mm.
8. according to the liquid acid alkylation reactor of claim 1, it is characterized in that, described gas vent is arranged on 35% ~ 45% of height for reactor from the bottom to top, and described liquid product outlet is arranged on 15% ~ 25% of height for reactor from the bottom to top.
9. according to the liquid acid alkylation reactor of claim 1, it is characterized in that, described circulating pump is acid corrosion-resistant type centrifugal pump.
10. according to the liquid acid alkylation reactor of claim 1, it is characterized in that, described reactor head arranges circulation cryogen entrance.
11. 1 kinds of liquid acid alkylation reaction methods, it is characterized in that, to adopt in claim 1-10 the liquid acid alkylation reactor of any one, liquid acid catalyst and alkylated reaction raw material are introduced injector through the entrance of injection stream blender, the material of two injector ejections of one group of injection stream blender occurs strongly clash into and mix in mixed zone, mixed material enters reaction zone and liquid collecting zone, and there is alkylated reaction, reaction mass is after sedimentation, the liquid collecting zone enriched liquid acid catalyst of reactor bottom, return after circulating pump supercharging in injection stream blender and reuse, the hydrocarbon material flow of vaporization is discharged through gas vent, product hydrocarbon mixture enters piece-rate system through liquid product outlet discharge.
12., according to the liquid acid alkylation reaction method of claim 11, is characterized in that, described liquid acid catalyst is the concentrated sulfuric acid, strong acidic ion liquid or the mixed acid containing the concentrated sulfuric acid.
13., according to the liquid acid alkylation reaction method of claim 11, is characterized in that, described is 85wt% ~ 98wt% containing the content of the concentrated sulfuric acid in the mixed acid of the concentrated sulfuric acid, and all the other are one or more in TFMS, phosphoric acid and formic acid.
14., according to the liquid acid alkylation reaction method of claim 11, is characterized in that, described alkylated reaction raw material is the C containing iso-butane
3~ C
5olefine fraction.
15. according to the liquid acid alkylation reaction method of claim 11, and it is characterized in that, the operating condition of described liquid acid alkylation reactor is: pressure is 0.05 ~ 1.2MPa; Temperature is-4 ~ 15 DEG C.
16. according to the liquid acid alkylation reaction method of claim 11, it is characterized in that, product hydrocarbon mixture enters sour hydrocarbon knockout drum through liquid product outlet discharge, after sedimentation separation, in liquid acid catalyst Returning reactor bottom acid hydrocarbon knockout drum, isolated hydrocarbon mixture enters next cleaning procedure.
17. according to the liquid acid alkylation reaction method of claim 11, and it is characterized in that, the hydrocarbon material flow of described vaporization is discharged through gas vent, and the vaporization alkane of discharge continues reaction in Returning reactor after compressor compression condensation.
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| CN107974280A (en) * | 2016-10-25 | 2018-05-01 | 中国石油化工股份有限公司 | A kind of liquid acid alkylation reaction method |
| CN108246515A (en) * | 2018-03-28 | 2018-07-06 | 中国矿业大学 | A kind of size mixing flotation integral system and method for floating of sizing mixing with internal circulatory function |
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| CN108283996A (en) * | 2018-03-28 | 2018-07-17 | 中国矿业大学 | A kind of multiphase mixing mineralization device and mixed method |
| CN108325493A (en) * | 2018-03-28 | 2018-07-27 | 中国矿业大学 | A kind of granular medicine action system and method based on strong turbulence cycle |
| CN114432976A (en) * | 2020-10-31 | 2022-05-06 | 中国石油化工股份有限公司 | Production device and method of alkylated gasoline |
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| US6194625B1 (en) * | 1994-09-30 | 2001-02-27 | Stratco, Inc. | Alkylation by controlling olefin ratios |
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| CN103611487A (en) * | 2013-12-18 | 2014-03-05 | 华东理工大学 | Impinging stream reactor |
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