CN1246467A - Process for alkylation of isomeric paraffin and olefin - Google Patents

Process for alkylation of isomeric paraffin and olefin Download PDF

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CN1246467A
CN1246467A CN 98117815 CN98117815A CN1246467A CN 1246467 A CN1246467 A CN 1246467A CN 98117815 CN98117815 CN 98117815 CN 98117815 A CN98117815 A CN 98117815A CN 1246467 A CN1246467 A CN 1246467A
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alkylation
acid
reaction
oxide
raw material
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CN1076721C (en
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谢文华
何奕工
闵恩泽
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Sinopec Research Institute of Petroleum Processing
China Petrochemical Corp
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Sinopec Research Institute of Petroleum Processing
China Petrochemical Corp
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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2/00—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms
    • C07C2/54—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by addition of unsaturated hydrocarbons to saturated hydrocarbons or to hydrocarbons containing a six-membered aromatic ring with no unsaturation outside the aromatic ring
    • C07C2/56—Addition to acyclic hydrocarbons
    • C07C2/58—Catalytic processes
    • C07C2/60—Catalytic processes with halides
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2521/00—Catalysts comprising the elements, oxides or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium or hafnium
    • C07C2521/02—Boron or aluminium; Oxides or hydroxides thereof
    • C07C2521/04—Alumina
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2521/00—Catalysts comprising the elements, oxides or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium or hafnium
    • C07C2521/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2521/00—Catalysts comprising the elements, oxides or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium or hafnium
    • C07C2521/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
    • C07C2521/08—Silica
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2521/00—Catalysts comprising the elements, oxides or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium or hafnium
    • C07C2521/10—Magnesium; Oxides or hydroxides thereof
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2527/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
    • C07C2527/06—Halogens; Compounds thereof
    • C07C2527/125—Compounds comprising a halogen and scandium, yttrium, aluminium, gallium, indium or thallium
    • C07C2527/126—Aluminium chloride

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Abstract

A process for the alkylation of isomeric paraffin and olefin features that in the condition of -10-200 deg.C, 0.1-10 MPa, 0.1-20/hr of raw material's weight space speed and 2-50 of ane/ene ratio, the isomeric paraffin containing 3-6 carbon atoms and monoolefin containing 3-6 carbon atoms are in contact with a catalyst. Said catalyst contains porous inorganic carrier (40-95 wt.%), Bronsted acid (1-60 wt.%) and Lewis acid (0.3-15 wt.%). Said Bronsted acid is a heteropoly acid or an inorganic mineral acid. Said Lewis acid is chosen from AlCl3, BF3 or XF5, where X is P, As, Sb or Bi. Its advantages are not lossing active components of catalyst easily, no equipment corrosion and environmental pollution, and high transform rate and selectivity of reaction.

Description

The alkylation of a kind of isoparaffin and alkene
The present invention relates to the alkylation of a kind of isoparaffin and alkene.
The alkylation process of isoparaffin and alkene is meant C 3-C 6Isoparaffin (generally being meant Trimethylmethane) and C 3-C 6The singly-bound olefine reaction generate the reaction process of the long chain alkane of isomery.As: the C that Trimethylmethane and butene alkylation generate 8Isoparaffin has high octane value (research octane number (RON) RON:96-98, motor-method octane number MON:94-96) and low Reid vapour pressure, is a kind of gasoline mediation composition of excellent property, also is the important harmonic component of so-called reformulated gasoline.
The alkylated reaction of isoparaffin and alkene is a significant process of petroleum refining industry, at present, the industrial catalyzer that generally uses is sulfuric acid and hydrofluoric acid, this class I liquid I acid catalyst has good catalytic activity to the alkylated reaction of isoparaffin and alkene, its product alkylate oil has high-octane rating, but because this class I liquid I acid catalyst can bring serious equipment corrosion and environmental pollution, adopt solid acid catalyst to replace to be one of effective means that addresses the above problem, simultaneously, adopt solid acid also will make product and catalyzer be easier to separate, and catalyzer also can recycle.Therefore, this research field is subjected to international generally attention, up to the present, and existing a large amount of documents, patent report about solid acid alkylation catalysts.At present, solid acid alkylation catalysts is broadly divided into following four classes with its character:
1. molecular sieve: with the molecular sieve of different structure, composition is that document, the patent report of alkylation catalyst is a lot, as U.S. Pat P3,549,557,3,644,565,3,647,916,3,917,738,4,384,161,4,992,615,5,516,962,5,475,175, and Chinese patent CN1057641A etc., the molecular sieve that relates to has REY, HY, β, MCM and ZSM series etc.
2. the solid super-strong acid of sour promoted type solid super-strong acid and compound oxide type: wherein with SO 4 2-/ carrier is main, and carrier can be multiple oxide compound, as ZrO 2, TiO 2, Al 2O 3Deng, delivering patent has: JPN01245853, JP51-6509; USP3,962,133, USP4,116,880, USP3,975,299, GB1432720, GB1389237 etc.
3. the solid super-strong acid of liquid superacid or L acid loading type: because most liquid super acids and strong L acid all have good catalytic activity to the abovementioned alkyl reaction, therefore it is loaded on the solid super-strong acid that forms on certain carrier generally also all good catalytic activity, for example with SbF 5, CF 3SO 3H, H 2SO 4, HF-SbF 5, H 2SO 3F-SbF 5, BF 3Even load is at SiO 2, Al 2O 3And on some composite oxides and the molecular sieve, the patent of delivering has EP0043395A, EP0623388Al, EP0645184A1, CN10731275A, USP3,852,371, USP3,678,120, USP3,855,342, USP4,202,986, USP4,463,212, USP5,012,033, USP5,354,938, USP5,574,201, WO94/24075 etc.
4. heteropllyacids: the catalytic alkylation reaction in homogeneous phase or heterogeneous catalytic system with heteropolyacid or heteropolyacid salt, or under super critical condition, carry out alkylated reaction, as Japanese patent laid-open 7-157443, CN1125639A, 1125640A, CN1184797A, JP7238040, JP7233098, JP7157443, EP561284A, USP5,324,881 etc.
The fatal shortcoming of preceding two class catalyzer in alkylation process is rapid inactivation, in a few hours even tens of minutes, its activity drops to very low level from 100%, and products distribution is also unsatisfactory, summary paper (the Catal.Rev.Sci.Eng. that develops and see A.Corma, 35 (4), 483-570 (1993)).In fact majority in the 3rd class catalyzer is not solid acid catalyst completely, the catalyzer made from the liquid acid appendix, because wherein the appendix fastness of the liquid acid of institute's appendix is poor, has suitable flowability, though also useful technologic way comes Mi to mend, but still unavoidably its loss, and contain hydracid in a large number and exist with liquid form, though reduced volatility than HF, still had etching problem to a certain extent.With gas L acid, as BF 3Appendix is made catalyzer, and free BF is also arranged 3Existence, so still have environmental pollution problems.
The objective of the invention is to adopt a kind of new catalyst system that the alkylation of a kind of low-carbon (LC) isoparaffin and alkene is provided, to overcome in the prior art catalyst activity component shortcoming such as loss easily.
The alkylation of low-carbon (LC) isoparaffin provided by the invention and alkene is to be-10 ℃～200 ℃ in temperature of reaction, and preferred 10～80 ℃, reaction pressure is 0.1～10MPa, preferred 0.5～3MPa, and raw material weight air speed (WHSV) is 0.1～20 hour -1, preferred 2～8 hours -1Raw material alkane alkene ratio is 2～50, under preferred 10～40 the condition, the raw material that will contain carbonatoms and be 3～6 isoparaffin and carbonatoms and be 3～6 monoolefine contacts with a kind of catalyzer, it is characterized in that said catalyzer is made up of a kind of Br  nsted acid (B acid) of a kind of porous inorganic carrier of 40～95 heavy % and load 1～60 heavy % on it and a kind of Lewis acid (L acid) of 0.3～15 heavy %.
Said raw material weight air speed is meant the said isoparaffin that passes through on the unit time unit weight catalyzer and total weight of said monoolefine in the alkylation provided by the present invention; Said raw material alkane alkene is than the mol ratio that is meant said isoparaffin and said monoolefine in the raw material; Trimethylmethane preferably in the said isoparaffin preferably comprises the butylene of 1-butylene, 2-butylene and iso-butylene in the said monoolefine.
Said porous inorganic carrier can be various inorganic, metal oxides such as aluminum oxide, silicon oxide, magnesium oxide, titanium oxide, zirconium white etc., composite inorganic metal oxide such as Al in the alkylation catalyst system therefor provided by the present invention 2O 3-SiO 2, Al 2O 3-MgO, SiO 2-TiO 2, ZrO 2-TiO 2Deng, have aluminosilicate zeolite, molecular sieve, and various gacs etc. of the hydrotalcite oxide compound of laminate structure, natural or synthetic, the present invention has no particular limits it, wherein preferably comprise the porous inorganic oxide or the gac of aluminum oxide, silicon oxide, titanium oxide, zirconium white or their composite oxides, its surface-area is 〉=100m 2/ g.
Said Br  nsted acid is a kind of heteropolyacid or a kind of H that comprises in the alkylation catalyst system therefor provided by the present invention 2SO 4, HCl, HNO 3, HClO 4In interior inorganic mineral acid, wherein said heteropolyacid general formula is H 8-n[AM 12O 40], wherein A is P or Si, and M is W or Mo, and n is the valence state of A, and its value is 4 or 5.The preferred Br  of the present invention nsted acid is heteropolyacid.
Said Lewis acid is selected from AlCl in the alkylation catalyst system therefor provided by the present invention 3, BF 3Perhaps XF 5, wherein X is P, As, Sb or Bi, preferred Lewis acid is BF 3Perhaps SbF 5
Alkylation provided by the present invention can be at fixed-bed reactor, intermittently carry out in the reactors such as tank reactor, moving-bed, thermopnore or three-phase mud bed, and the present invention has no particular limits it.
Method provided by the invention is because catalyst system therefor adopts B-L conjugated solid acid system, B acid all is that even appendix is on carrier with L acid, because interaction between B acid and L acid and the interaction between B acid and L acid and carrier, the appendix fastness height of B acid and L acid, there is not free component in the catalyst system, active ingredient be difficult for to run off, and does not produce equipment corrosion and environmental pollution, and reaction conversion ratio and selectivity are all higher.
The present invention is described further below by embodiment.
Fig. 1 is the synoptic diagram of the used testing apparatus of the embodiment of the invention, and it only is used to illustrate the used testing apparatus of the embodiment of the invention, and does not limit protection scope of the present invention.
L acid appendix device mainly comprises a L acid hold-up vessel 10, by raft V7 and V8.
The alkylated reaction system comprises:
(1). charging metering system: adopt precision metering pump 3 (U.S. TSP company product) from reactant batch can 2, will be made into and require the Trimethylmethane and the butylene of alkane alkene ratio to squeeze in the reactor.Inlet amount is by 1 metering of the precise electronic balance under the reactant batch can 2.
(2). reactive system: 5 is heatable reactor, and 12 for having the reactor of circulating frozen system, and two reactors can be replaced use, in this patent, if no special instructions, the employed reactor 5 that is.Two reactors all can be adorned the 25ml catalyzer, the temperature homogeneous of the constant temperature zone assurance beds of process furnace and constant.The temperature of catalyst reactor bed is by the temperature control instrument control of Britain West company production, and the pressure of reactor guarantees that by high-accuracy pressure controller (U.S. Anaheim company product) control the temperature and pressure in the reactor is stable and accurate.
3. separate and analytical system: reaction product and unreacted material are at first through the outside two-way valve 7 that is connected with recirculated cooling water, passing through high pressure and low pressure two-stage separator (being respectively 8 and 9) again separates liquid-phase reaction product (alkylate oil) and the unreacted material of gas phase (Trimethylmethane and alkene), unreacted streams is behind wet flow indicator 11, enter online gas-chromatography timing analysis, alkylate oil is regularly taken out by V18, analyzes full the composition on an other chromatogram.
Analytical procedure: adopt the composition of SP-3420 chromatographic instrument on-line analysis gas-phase product, chromatographic column is the OV-01 kapillary crosslinking column of 50m * 0.2mm; Analyze alkylate oil from C with HP-5890 (hewlette-packard product) chromatographic instrument 3～C 12Full composition, chromatographic column is the OV-01 capillary column of 50m * 0.2mm.
Among Fig. 14 is the drying tube that the 4A molecular sieve is housed in addition, and 6 is tail gas absorption cleaning tower, and P1～P5 is a tensimeter, and V6 is a reducing valve, and V10 is a flow control valve, and V12, V14 are back pressure valve, and all the other are stopping valve.
The reaction raw materials alkane that uses among each embodiment and the composition of alkene are as shown in table 1, but in each embodiment and the Comparative Examples said raw material alkane alkene than the actual mol ratio that is meant isoparaffin and monoolefine in the mixed raw material.
Table 1
Trimethylmethane (heavy %) Butylene (heavy %)
Propane ????1.82 1-butylene+iso-butylene ????2.92
Trimethylmethane ????94.85 Normal butane ????11.62
Normal butane ????2.21 Maleic-2 ????57.70
Butylene ????1.12 Anti-butene-2 ????27.76
Embodiment 1
One. catalyst system therefor HPW-SbF of the present invention 5/ SiO 2Preparation:
With the 3.3g phospho-wolframic acid (by butt weight, Beijing Chemical Plant's commerical prod, analytical pure is noted by abridging and is HPW, down with) be dissolved in the 40ml water, (silica gel factory in Qingdao produces, and specific surface area is 488 meters to wherein adding the 10g silochrom 2/ gram, granularity is 250～450 microns, down with), after 24 hours, continue evaporate to dryness in water-bath at dipping in 60 ℃ of water-baths, move in the baking oven 100 ℃ of oven dry 24 hours again, obtaining the phospho-wolframic acid charge capacity is the precursor HPW/SiO of 25 heavy % 2The appendix of L acid carries out in reactor, sees accompanying drawing 1, at first the V3 before the reactor, V19, V7, V8 is closed, and the V9 behind the reactor opens, and V11 closes.With said precursor HPW/SiO above the 10g 2Place reactor 5, regulating P5 pressure by reducing valve V6 is 0.2MPa, opens V5, V4, and regulates N by V10 2Gas velocity is 15 ml/min, makes high-purity N 2Air-flow is through reactor 5, and reactor 5 is heated to 150 ℃, with HPW/SiO wherein 2Heat treated 6 hours cools to 50 ℃ with reactor 5 then, closes V4, opens V7, V8, is that carrier gas stream is through being equipped with L acid SbF with nitrogen 5Container 10, carry SbF 5(U.S. ACROS ORGANIC corporate system, analytical pure) molecule feeds reactor 5, the appendix 12 hours of ventilating continuously, and the temperature with reactor 5 transfers to 30 ℃ then, closes V7, V8 then, opens V4, uses N 2The catalyzer 1 hour in the reactor is swept in air-blowing, and to remove not appendix and the not firm L acid of appendix, catalyzer promptly prepares to be finished.
Two. according to the alkylated reaction of Trimethylmethane of the present invention and butylene:
Make the valve in the reactive system all be in closing condition before the reaction beginning, regulate reducing valve V6 earlier, make the pressure of P5 reach reaction pressure, open V5, V4, with N2 the pressure of reactor being charged to the reaction pressure of setting, is 3MPa in this example, closes V5 then, open V1, in reaction raw materials jar 2, feed N 2, make it to keep the pressure (observing its pressure) of 0.9～1MPa by tensimeter P1, it is liquid making reaction raw materials, accurately squeeze into volume pump 3 and to be made into the raw material that requires alkane alkene ratio, and, open V2, V3, V4 by electronic balance 1 metering feeding amount, make reaction raw materials drying pipe 4 enter reactor 5.After the reaction beginning, close V9, open V11, V12, V17, V13, V14, V15, wherein V12 and V14 are back pressure valve, are used for the pressure of conditioned reaction device and high-pressure separator respectively, and respectively by tensimeter P3 and P4 viewing system pressure; Separate through two-stage, tail gas is flowed out by wet flow indicator 11, the metering gas flow, and to carry out material balance calculating, simultaneously, tail gas stream is regularly measured it and is formed through gas-chromatography, and to determine the transformation efficiency of reaction, timing is collected product by V18 and is analyzed it and form.Reaction conditions and the results are shown in Table 2.
Comparative Examples 1
This Comparative Examples explanation effect of liquid acid sulfuric acid as the catalyzer of Trimethylmethane and butene alkylation.With 73.3g (40ml) concentration 95% H 2SO 4Be catalyzer, in tank reactor, carry out the alkylated reaction of Trimethylmethane and butylene.For under the 0.7MPa, add listed Trimethylmethane in the 18.0g table 1 at reactor pressure (using the nitrogen pressurising).Under violent stirring, temperature of reaction is transferred to 10 ℃ then, add listed butylene in the 3.48g table 1.Reaction continued to carry out 2.0 hours, analyzed gas phase composition and liquid phase composition in the still respectively with gas-chromatography then.Reaction result and other reaction conditions see Table 2.
Embodiment 2
Catalyst preparation process by embodiment 1 prepares the catalyst S bF that the phospho-wolframic acid charge capacity is 5 heavy % 5-HPW/SiO 2: the 0.5g phospho-wolframic acid is dissolved in the 30ml water, adds the 9.5g silochrom, after 24 hours, continue evaporate to dryness at dipping in 60 ℃ of water-baths, move in the baking oven 100 ℃ of oven dry 24 hours again, obtaining the phospho-wolframic acid charge capacity is the precursor HPW/SiO of 5 heavy % 2Then according to the load SbF on this precursor of the same procedure among the embodiment 1 5
Carry out the alkylated reaction of Trimethylmethane and butylene with the above-mentioned catalyzer that makes, catalyst levels, reaction mass form and reaction process all with embodiment 1.Reaction conditions and the results are shown in Table 3.
Table 2 catalyzer HPW (25%)-SbF 5/ SiO 2H 2SO 4Reaction conditions charging alkane alkene ratio: 30 6.0 raw material weight air speeds (hour -1): 2.0 2.0 reaction pressures (MPa): 3.0 0.7 reaction temperatures (℃) 30 10 reaction time (hour): 20 30 40 50 2 butene conversion (heavy %): 100 100 100 100 100 carbon, five above products distributions (heavy %):
C 5??????????????????????????7.31??????2.99?????8.63?????4.02????0.2
C 6??????????????????????????5.27??????2.49?????3.27?????2.77????1.10
C 7??????????????????????????7.31??????4.36?????5.14?????4.12????2.80
C 8??????????????????????????74.16?????73.39????67.61????70.07???63.80
C 9More than 5.92 16.73 13.21 18.99 31.40
TMP *????????????????????????38.39?????51.66????46.42????51.12???46.08
C 8Alkene 0.00 0.00 0.00 0.00 0.00
*TMP in the table 2 represents trimethylpentane, comprises its all isomer: pure isooctane, 2,2,3,4-trimethylpentane, 2,3,3-trimethylpentane.
Embodiment 4
This embodiment is a condition experiment, and catalyst preparation process and alkylation operation process are with embodiment 1, and its reaction conditions and reaction result see Table 4.
Embodiment 5
Press embodiment 1 described same procedure and replace silochrom, make HPW (25%)-SbF with gac (Beijing Xinhua timber mill commerical prod) 5/ activated-carbon catalyst, and carry out the alkylated reaction of Trimethylmethane and butylene according to the same procedure among the embodiment 1 with this catalyzer.Reaction conditions and the results are shown in Table 5.
Table 3 catalyst S bF 5-HPW (5%)/SiO 2Reaction conditions
Charging alkane alkene ratio: 30
The raw material weight air speed (hour -1): 2.0
Reaction pressure (MPa): 3.0
Temperature of reaction (℃) 30
Reaction times (hour): 20 30 40 50 butene conversion (heavy %): 100 100 96 93 carbon, five above products distribution (heavy %):
C 5???????????????????????????3.34????4.92????2.48????5.46
C 6???????????????????????????2.79????2.91????2.01????1.62
C 7???????????????????????????4.42????4.01????2.57????2.01
C 8???????????????????????????75.81???69.24???64.01???62.88
C 9More than 13.57 18.91 27.29 28.06
TMP???????????????????????????53.23???49.14???42.24???33.42
C 8Alkene 0.00 0.00 0.53 1.00 table 4 catalyst S bF 5-HPW (25%)/SiO 2Reaction conditions
Charging alkane alkene ratio: 30 7 15 40
The raw material weight air speed (hour -1): 0.2 22 15
Reaction pressure (MPa): 3.0 3.5 8.0 4.0
Temperature of reaction (℃) 0 100 30 50
Reaction times (hour): 10 10 10 10 butene conversion (heavy %): 80.0 100 96 93 carbon, five above products distribution (heavy %):
C 5???????????????????????????2.01????1.05????2.70????1.25
C 6???????????????????????????4.85????2.42????3.10????2.21
C 7???????????????????????????1.16????3.58????0.44????1.55
C 8???????????????????????????68.42???66.55???69.58???60.57
C 9More than 22.98 22.75 20.44 34.41
TMP???????????????????????????33.23???44.03???40.44???39.25
C 8Alkene 0.00 0.00 0.00 0.00 table 5 catalyzer HPW (25%)-SbF 5/ gac reaction conditions
Charging alkane alkene ratio: 30
The raw material weight air speed (hour -1): 2.0
Reaction pressure (MPa): 3.0
Temperature of reaction (℃) 30
Reaction times (hour): 20 30 40 50 butene conversion (heavy %): 100 100 92 90 carbon, five above products distribution (heavy %):
C 5???????????????????????5.22??????3.68?????3.69????1.67
C 6???????????????????????4.00??????4.23?????2.61????1.20
C 7???????????????????????6.09??????6.41?????2.72????0.72
C 8???????????????????????69.52?????75.20????59.80???60.80
C 9More than 15.26 10.06 29.01 35.53
TMP???????????????????????51.88?????49.34????40.93???37.96
C 8Alkene 0.00 0.00 0.75 1.65
Embodiment 6
H at 50 milliliter 5% 2SO 4Add the 10g silochrom in the aqueous solution, dipping changed in 100 ℃ of baking ovens and dried 15 hours after 24 hours in 60 ℃ of water-baths, made H 2SO 4Charge capacity is the precursor H of 25 heavy % 2SO 4/ SiO 2, again by method on this precursor on appendix the SbF identical with embodiment 1 5, make SbF 5-H 2SO 4/ SiO 2Catalyzer carries out the alkylated reaction of Trimethylmethane and butylene according to the method identical with embodiment 1 with this catalyzer then, its reaction conditions and the results are shown in Table 6.Table 6 catalyzer H 2SO 4-SbF 5/ SiO 2Reaction conditions
Charging alkane alkene ratio: 30
The raw material weight air speed (hour -1): 2.0
Reaction pressure (MPa): 3.0
Temperature of reaction (℃) 30
Reaction times (hour): 2 10 20 butene conversion (heavy %): 100 100 93 carbon, five above products distribution (heavy %):
C 5???????????????????????2.29????????1.81?????????2.40
C 6???????????????????????1.68????????1.42?????????1.53
C 7???????????????????????0.87????????0.84?????????1.12
C 8???????????????????????64.33???????66.14????????63.59
C 9More than 30.69 30.50 31.65
TMP???????????????????????28.43???????28.80????????28.11
C 8Alkene 7.70 5.80 9.19 table 7 catalyst S bF 5-HCl/SiO 2Reaction conditions
Charging alkane alkene ratio: 30
The raw material weight air speed (hour -1): 2.0
Reaction pressure (MPa): 3.0
Temperature of reaction (℃): 30
Reaction times (hour): 2 10 20 butene conversion (heavy %): 100 94 90 carbon, five above products distribution (heavy %):
C 5???????????????????????1.44????????1.51?????????2.91
C 6???????????????????????1.57????????1.46?????????2.28
C 7???????????????????????1.48????????1.40?????????1.74
C 8???????????????????????69.07???????65.93????????68.78
C 9More than 26.89 28.75 24.39
TMP???????????????????????32.22???????29.54????????28.39
C 8Alkene 6.90 6.54 14.99
Embodiment 7
Method according to identical with embodiment 6 replaces H with HCl 2SO 4Make catalyst S bF 5-HCl/SiO 2, and carry out the alkylated reaction of Trimethylmethane and butylene, reaction conditions and the results are shown in Table 7.
Embodiment 8
According to the same procedure among the embodiment 1 with silicomolybdic acid (by butt weight, Beijing Chemical Plant's commerical prod, analytical pure, note by abridging be HSiMo) replace phospho-wolframic acid to make catalyzer HSiMo-SbF 5/ Si O2, and carry out the alkylated reaction of Trimethylmethane and butylene according to the method identical with embodiment 1.Reaction conditions and reaction result see Table 8.
Table 8 catalyst S bF 5-HSiMo/SiO 2Reaction conditions
Charging alkane alkene ratio: 30
The raw material weight air speed (hour -1): 2.0
Reaction pressure (MPa): 3.0
Temperature of reaction (℃): 30
Reaction times (hour): 2 16 24 butene conversion (heavy %): 100 100 100 carbon, five above products distribution (heavy %):
C 5???????????????????????0.65???????7.34???????2.77
C 6???????????????????????1.99???????5.74???????2.16
C 7???????????????????????4.28???????8.53???????3.98
C 8???????????????????????72.07??????69.36??????75.59
C 9More than 14.59 9.59 15.50
TMP???????????????????????47.23??????43.79??????49.69
C 8Alkene 0.00 0.00 0.00

Claims (8)

1. the alkylation of low-carbon (LC) isoparaffin and alkene, this method are to be-10 ℃～200 ℃ in temperature of reaction, and reaction pressure is 0.1～10MPa, and the raw material weight air speed is 0.1～20 hour -1Raw material alkane alkene is than being under 2～50 the condition, the raw material that will contain carbonatoms and be 3～6 isoparaffin and carbonatoms and be 3～6 monoolefine contacts with a kind of catalyzer, it is characterized in that said catalyzer is made up of a kind of Lewis acid institute of a kind of Br  nsted acid of a kind of porous inorganic carrier of 40～95 heavy % and load 1～60 heavy % on it and 0.3～15 heavy %.
2. according to the alkylation of claim 1, wherein temperature of reaction is 10～80 ℃, and reaction pressure is 0.5～3MPa, and raw material weight air speed (WHSV) is 2～8 hours -1, raw material alkane alkene ratio is 10～40.
3. according to the alkylation of claim 1, Trimethylmethane preferably in the wherein said isoparaffin preferably comprises the butylene of 1-butylene, 2-butylene and iso-butylene in the said monoolefine.
4. according to the alkylation of claim 1, wherein said porous inorganic carrier is the inorganic, metal oxide that comprises aluminum oxide, silicon oxide, magnesium oxide, titanium oxide, zirconium white, comprises Al in the catalyst system therefor 2O 3-SiO 2, Al 2O 3-MgO, SiO 2-TiO 2, ZrO 2-TiO 2At interior composite inorganic metal oxide, have the hydrotalcite oxide compound of laminate structure, aluminosilicate zeolite, molecular sieve and the gac of natural or synthetic.
5. according to the alkylation of claim 4, wherein said porous inorganic carrier is porous inorganic oxide or the gac that comprises aluminum oxide, silicon oxide, titanium oxide, zirconium white or their composite oxides, and its surface-area is 〉=100m 2/ g.
6. according to the alkylation of claim 1, wherein said Br  nsted acid is a kind of heteropolyacid or a kind of H that comprises in the catalyst system therefor 2SO 4, HCl, HNO 3, HClO 4In interior inorganic mineral acid, wherein said heteropolyacid general formula is H 8-n[AM 12O 40], wherein A is P or Si, and M is W or Mo, and n is the valence state of A, and its value is 4 or 5; Said Lewis acid is selected from AlCl 3, BF 3Perhaps XF 5, wherein X is P, As, Sb or Bi.
7. according to the alkylation of claim 1 or 6, wherein said Br  nsted acid is a kind of heteropolyacid.
8. according to the alkylation of claim 1 or 6, wherein said Lewis acid is BF 3Perhaps SbF 5
CN98117815A 1998-08-27 1998-08-27 Process for alkylation of isomeric paraffin and olefin Expired - Lifetime CN1076721C (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7674945B2 (en) 2004-01-19 2010-03-09 China Petroleum & Chemical Corporation Process for alkylation of an aromatic hydrocarbon or isoalkane with an olefin over the catalysis of a solid acid
CN102764664A (en) * 2011-05-05 2012-11-07 张麒 Method for preparing double acidic center solid super acid
CN105170163A (en) * 2015-09-11 2015-12-23 宁波海越新材料有限公司 Solid super acidic catalyst used for isobutane and butene alkylation and preparation method for solid super acidic catalyst
CN107185563A (en) * 2017-05-08 2017-09-22 安徽海德石油化工有限公司 One kind produces gasoline alkylate catalyst using refinery's C-4-fraction

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5292982A (en) * 1991-06-21 1994-03-08 Mobil Oil Corporation Liquid acid alkylation catalyst and isoparaffin-olefin alkylation process
EP0539277B1 (en) * 1991-10-25 1996-01-10 Institut Francais Du Petrole Use of a catalyst for paraffins alkylation
US5324881A (en) * 1992-12-22 1994-06-28 Mobil Oil Corp. Supported heteropoly acid catalysts for isoparaffin-olefin alkylation reactions

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7674945B2 (en) 2004-01-19 2010-03-09 China Petroleum & Chemical Corporation Process for alkylation of an aromatic hydrocarbon or isoalkane with an olefin over the catalysis of a solid acid
CN102764664A (en) * 2011-05-05 2012-11-07 张麒 Method for preparing double acidic center solid super acid
CN105170163A (en) * 2015-09-11 2015-12-23 宁波海越新材料有限公司 Solid super acidic catalyst used for isobutane and butene alkylation and preparation method for solid super acidic catalyst
CN107185563A (en) * 2017-05-08 2017-09-22 安徽海德石油化工有限公司 One kind produces gasoline alkylate catalyst using refinery's C-4-fraction

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