CN102464555B - Polymerization inhibitor for thermal dimerization process of five fractions of petroleum cracking carbon - Google Patents
Polymerization inhibitor for thermal dimerization process of five fractions of petroleum cracking carbon Download PDFInfo
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- CN102464555B CN102464555B CN201010535960XA CN201010535960A CN102464555B CN 102464555 B CN102464555 B CN 102464555B CN 201010535960X A CN201010535960X A CN 201010535960XA CN 201010535960 A CN201010535960 A CN 201010535960A CN 102464555 B CN102464555 B CN 102464555B
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- octanol
- aminophenol
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- 238000005120 petroleum cracking Methods 0.000 title claims abstract description 25
- 238000006471 dimerization reaction Methods 0.000 title claims abstract description 21
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title abstract description 32
- 229910052799 carbon Inorganic materials 0.000 title abstract description 32
- 239000003112 inhibitor Substances 0.000 title abstract description 17
- 238000006116 polymerization reaction Methods 0.000 title abstract description 13
- 238000000034 method Methods 0.000 title abstract description 7
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 claims abstract description 90
- KBPLFHHGFOOTCA-UHFFFAOYSA-N 1-Octanol Chemical compound CCCCCCCCO KBPLFHHGFOOTCA-UHFFFAOYSA-N 0.000 claims abstract description 76
- CDAWCLOXVUBKRW-UHFFFAOYSA-N 2-aminophenol Chemical compound NC1=CC=CC=C1O CDAWCLOXVUBKRW-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000002904 solvent Substances 0.000 claims abstract description 19
- 150000001993 dienes Chemical class 0.000 abstract description 8
- 238000007334 copolymerization reaction Methods 0.000 abstract description 5
- 230000005764 inhibitory process Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000000926 separation method Methods 0.000 abstract description 2
- PXAJQJMDEXJWFB-UHFFFAOYSA-N acetone oxime Chemical compound CC(C)=NO PXAJQJMDEXJWFB-UHFFFAOYSA-N 0.000 abstract 3
- 239000003054 catalyst Substances 0.000 abstract 1
- HECLRDQVFMWTQS-RGOKHQFPSA-N 1755-01-7 Chemical compound C1[C@H]2[C@@H]3CC=C[C@@H]3[C@@H]1C=C2 HECLRDQVFMWTQS-RGOKHQFPSA-N 0.000 description 35
- 239000003208 petroleum Substances 0.000 description 16
- ZSWFCLXCOIISFI-UHFFFAOYSA-N cyclopentadiene Chemical compound C1C=CC=C1 ZSWFCLXCOIISFI-UHFFFAOYSA-N 0.000 description 14
- -1 isoprenyl Chemical group 0.000 description 7
- 239000004215 Carbon black (E152) Substances 0.000 description 5
- 229930195733 hydrocarbon Natural products 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 229920000642 polymer Polymers 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- 239000012496 blank sample Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- XNMQEEKYCVKGBD-UHFFFAOYSA-N 2-butyne Chemical compound CC#CC XNMQEEKYCVKGBD-UHFFFAOYSA-N 0.000 description 2
- BKOOMYPCSUNDGP-UHFFFAOYSA-N 2-methylbut-2-ene Chemical compound CC=C(C)C BKOOMYPCSUNDGP-UHFFFAOYSA-N 0.000 description 2
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- 235000008708 Morus alba Nutrition 0.000 description 2
- 240000000249 Morus alba Species 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 description 2
- QWTDNUCVQCZILF-UHFFFAOYSA-N isopentane Chemical compound CCC(C)C QWTDNUCVQCZILF-UHFFFAOYSA-N 0.000 description 2
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- CNHDIAIOKMXOLK-UHFFFAOYSA-N toluquinol Chemical group CC1=CC(O)=CC=C1O CNHDIAIOKMXOLK-UHFFFAOYSA-N 0.000 description 2
- PMJHHCWVYXUKFD-SNAWJCMRSA-N (E)-1,3-pentadiene Chemical compound C\C=C\C=C PMJHHCWVYXUKFD-SNAWJCMRSA-N 0.000 description 1
- QMMOXUPEWRXHJS-HWKANZROSA-N (e)-pent-2-ene Chemical group CC\C=C\C QMMOXUPEWRXHJS-HWKANZROSA-N 0.000 description 1
- YHQXBTXEYZIYOV-UHFFFAOYSA-N 3-methylbut-1-ene Chemical compound CC(C)C=C YHQXBTXEYZIYOV-UHFFFAOYSA-N 0.000 description 1
- 229920001174 Diethylhydroxylamine Polymers 0.000 description 1
- KGWDUNBJIMUFAP-KVVVOXFISA-N Ethanolamine Oleate Chemical compound NCCO.CCCCCCCC\C=C/CCCCCCCC(O)=O KGWDUNBJIMUFAP-KVVVOXFISA-N 0.000 description 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- QNRMTGGDHLBXQZ-UHFFFAOYSA-N buta-1,2-diene Chemical compound CC=C=C QNRMTGGDHLBXQZ-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 150000001941 cyclopentenes Chemical class 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- FVCOIAYSJZGECG-UHFFFAOYSA-N diethylhydroxylamine Chemical compound CCN(O)CC FVCOIAYSJZGECG-UHFFFAOYSA-N 0.000 description 1
- AFABGHUZZDYHJO-UHFFFAOYSA-N dimethyl butane Natural products CCCC(C)C AFABGHUZZDYHJO-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- NWVVVBRKAWDGAB-UHFFFAOYSA-N hydroquinone methyl ether Natural products COC1=CC=C(O)C=C1 NWVVVBRKAWDGAB-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- LQNUZADURLCDLV-UHFFFAOYSA-N nitrobenzene Chemical compound [O-][N+](=O)C1=CC=CC=C1 LQNUZADURLCDLV-UHFFFAOYSA-N 0.000 description 1
- RGSFGYAAUTVSQA-UHFFFAOYSA-N pentamethylene Natural products C1CCCC1 RGSFGYAAUTVSQA-UHFFFAOYSA-N 0.000 description 1
- 125000004817 pentamethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[*:1] 0.000 description 1
- YWAKXRMUMFPDSH-UHFFFAOYSA-N pentene Chemical group CCCC=C YWAKXRMUMFPDSH-UHFFFAOYSA-N 0.000 description 1
- PMJHHCWVYXUKFD-UHFFFAOYSA-N piperylene Natural products CC=CC=C PMJHHCWVYXUKFD-UHFFFAOYSA-N 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 235000010288 sodium nitrite Nutrition 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention relates to a polymerization inhibitor used in the thermal dimerization process of five fractions of petroleum cracking carbon; it consists of dimethyl ketoxime, octanol and o-aminophenol; the weight ratio of the dimethyl ketoxime to the octanol to the o-aminophenol is 1: 0.01-10.0: 0.1-12.0; the content of dimethyl ketoxime, octanol and o-aminophenol in the solvent is 1-20 wt%; the dosage of the polymerization inhibitor in the petroleum cracking carbon five fraction is 50-1200 ppm by weight; the catalyst has good polymerization inhibition effect, can effectively inhibit the self polymerization or copolymerization of diolefins in the petroleum cracking carbon five-fraction in a reactor or a separation tower, avoids the blockage of a preheater or a reboiler, prolongs the stable operation period of the device, effectively reduces the loss rate of isoprene, has small dosage, low cost and is easy to separate.
Description
Technical field
The present invention relates to a kind ofly for suppressing the stopper of five fractions of petroleum cracked carbon polymerization, particularly the hot dimerization of five fractions of petroleum cracked carbon suppresses the stopper of olefinic polymerization.
Background technology
C5 fraction (its classical group becomes in Table 1) is the by product of petroleum cracking ethene processed, generally is about 10%～20% of ethylene yield.China's carbon five resources are never well utilized, and only have small part for the production of common C 5 petroleum resin, or carry out simple separation production dicyclopentadiene (DCPD), and major part acts as a fuel and burns, and causes significant wastage.If the component in C5 fraction is separated, produce the Chemicals of a series of high added values by them, can greatly reduce production cost of ethylene, improve economic benefit and the competitive power of enterprise.
At present, carbon five separates and mostly utilizes cyclopentadiene (CPD) to be easy to from the characteristics that are polymerized to DCPD, at first, by the hot dimerization of carbon slender acanthopanax, after removing DCPD and other heavy constituent, then from light constituent separating isoprene (IP) and m-pentadiene (PD).Because component in cracking c_5 is many, cause hot dimerization reaction process very complicated, CPD is easy to dimerization and generates DCPD, also can generate dipolymer with IP or PD copolymerization simultaneously, causes IP and PD loss, is mixed with a large amount of multipolymers in the DCPD simultaneously obtained, and makes its content lower.
In the hot dimerization of C5 fraction, the general pressurized operation that adopts, cause service temperature higher, and diolefin character is very active, higher or the easy polymerization reaction take place while contacting with oxide compound in temperature, when diolefin concentration is higher, easily generate polymkeric substance, after forming polymerization site, the molecular weight of polymkeric substance increases gradually, and its mobility variation finally makes line clogging and reactor wall gum deposit, cause that loss of monomer, energy consumption increase, heat transfer effect is poor, must clean reactor, pre-heating system and pipeline when serious comprehensively.
In the hot dimerization of C5 fraction, the yield of dicyclopentadiene and the rate of loss of isoprene are to investigate the important indicator of hot dimerization processes.In the prior art, there are two kinds of ways can greatly reduce the rate of loss of isoprene: 1. to reduce temperature of reaction, extend the reaction times that (this method take that to increase energy consumption and improve production cost be cost.) 2. in sepn process, introduce efficient stopper, inhibition of isoprenyl and other diolefin form multipolymer.
At present, the stopper of inhibition diene hydrocarbon in five fractions of petroleum cracked carbon polymerization commonly used has: o-NP, oil of mirbane, furfural, thanomin or Sodium Nitrite etc. that ZL96116289.9 introduces; N, N-diethylhydroxylamine and adjacent methyl hydroquinone that CN1699310A introduces.Generally select the principle of stopper to be: can effectively suppress diolefin autohemagglutination or copolymerization in reactor or knockout tower, be easy to again separate, thereby do not affect isoprene, m-pentadiene quality product; Again can be in gas phase Mulberry Extract, molecular weight that again can telomerized polymer, make logistics have mobility preferably; In the hot dimerization of petroleum cracking C 5 fraction, in the situation that do not affect the cyclopentadiene transformation efficiency, can effectively reduce the isoprene rate of loss.What time above consideration is, and above-mentioned stopper is not well suited for.
Summary of the invention
The purpose of this invention is to provide a kind of for suppressing the stopper of diene hydrocarbon in five fractions of petroleum cracked carbon polymerization, this stopper is specially adapted to the hot dimerization of diene hydrocarbon in five fractions of petroleum cracked carbon, it can effectively suppress the obstruction of diolefin autohemagglutination or copolymerization in hot dipolymer reactor, preheater, can be in gas phase Mulberry Extract, molecular weight that again can telomerized polymer, make logistics have mobility preferably; In the hot dimerization of five fractions of petroleum cracked carbon, in the situation that do not affect the cyclopentadiene transformation efficiency, can effectively reduce the isoprene rate of loss.Be easy to again isolate the diolefin system simultaneously.
For solving the problem that reduces the isoprene rate of loss in the hot dimerization of diene hydrocarbon in five fractions of petroleum cracked carbon, adopt following technical scheme:
A kind of for suppressing the stopper of diene hydrocarbon in five fractions of petroleum cracked carbon polymerization, it is comprised of DMKO, octanol and Ortho-Aminophenol.For accurate measurement, preferably above-mentioned stopper is dissolved in five fractions of petroleum cracked carbon or isoprene.The weight ratio of DMKO, octanol and Ortho-Aminophenol is 1: 0.01～10.0: 0.1～12.0, and DMKO, octanol and the Ortho-Aminophenol content in solvent is 1～20wt%.The weight ratio of DMKO, octanol and Ortho-Aminophenol is preferably 1: 2.0～and 8.0: 1.0～4.0, DMKO, octanol and the Ortho-Aminophenol total content in solvent is preferably 7～12wt%.
In the hot dimerization of five fractions of petroleum cracked carbon, add above-mentioned stopper in five fractions of petroleum cracked carbon; While adding stopper, preferably adopt continuous pump to inject five fractions of petroleum cracked carbon, can make like this stopper distribute preferably in whole hot dipolymer reactor.In reactant, inhibitor concentration is 50～1200ppm, and optimum range is 200～600ppm.
Compared with prior art, stopper provided by the invention has better polymerization inhibition effect, and stopper can enter in gas phase, catches the free radical existed in gas phase; Once formation polymkeric substance, can avoid forming superpolymer, make logistics keep mobility preferably, this stopper more can effectively suppress diolefin autohemagglutination or copolymerization in reactor or knockout tower in the petroleum cracking C 5 fraction, avoid preheater or reboiler to block, thus the stable operation cycle of extension fixture; In the hot dimerization of five fractions of petroleum cracked carbon, in the situation that do not affect the cyclopentadiene transformation efficiency, can effectively reduce the isoprene rate of loss.The stopper consumption is few, can reduce production costs; The various components of stopper and solvent and five fractions of petroleum cracked carbon boiling point differ larger, thereby are easy to separate.
Embodiment
One, the preparation of stopper
Take in proportion DMKO, octanol and Ortho-Aminophenol, and be dissolved in solvent acetonitrile or dimethyl formamide.Control DMKO, octanol and Ortho-Aminophenol, the total content of three components is between 7～12wt%.Concrete DMKO, octanol and Ortho-Aminophenol weight ratio and the solvent of each embodiment describes in detail hereinafter.
Two, the evaluation test of stopper
The petroleum cracking C 5 fraction that adds respectively 200ml in the Pressure vessel of 3 250ml, then with syringe, the stopper prepared is joined in carbon five in the desired amount, weigh; Install 3 blank samples that do not add stopper simultaneously, weigh.Put into water-bath, tested by the temperature and time of design, to taking out and be cooled to room temperature after the time.3 Pressure vessels and 3 blank samples are moved in vacuum drying oven, at 35 ℃ of lower reduction vaporization 2h, vacuum tightness 0.08Mpa.Take out and weigh respectively, calculate the mean value G1 of 6 polymer contents in Pressure vessel, calculate the mean value G2 of 3 polymer contents in blank sample.
Stopper consumption (in the total amount of DMKO, octanol and Ortho-Aminophenol) and dicyclopentadiene yield, isoprene rate of loss describe in detail in an embodiment.
Three, dicyclopentadiene yield and isoprene rate of loss method of calculation
The evaluation test of table 1 stopper forms with petroleum cracking carbon Wuyuan material
| Sequence number | The component title | Content (%wt) |
| 1 | Anti-butylene | 2.04 |
| 2 | Maleic | 3.21 |
| 3 | Pentamethylene | 1.67 |
| 4 | Iso-pentane | 2.84 |
| 5 | Skellysolve A | 6.71 |
| 6 | 1，2-butadiene | 0.54 |
| 7 | 1,3-butadiene | 5.56 |
| 8 | 3-methyl-1-butene | 0.84 |
| 9 | Cyclopentenes | 4.50 |
| 10 | Trans-2-amylene | 2.94 |
| 11 | The 2-methyl-2-butene | 2.37 |
| 12 | The 1-amylene | 4.16 |
| 13 | 2-methyl-1-butene alkene | 4.32 |
| 14 | 2-butyne | 0.69 |
| 15 | Isosorbide-5-Nitrae-pentadiene | 2.40 |
| 16 | Isoprene | 23.36 |
| 17 | Cyclopentadiene | 5.78 |
| 18 | Along 1,3-pentadiene | 6.70 |
| 19 | Anti-1,3-pentadiene | 11.95 |
| 20 | X3 | 5.83 |
| 21 | Benzene | 0.34 |
[embodiment 1]
Component is DMKO, octanol and Ortho-Aminophenol, and solvent is petroleum cracking carbon five.The weight ratio of DMKO, octanol and Ortho-Aminophenol is 1: 0.1: 0.2, inhibitor concentration 300ppm.Before adding stopper, the dicyclopentadiene yield: 96.62%, isoprene rate of loss: 22.39%; After adding stopper, the dicyclopentadiene yield: 95.93%, isoprene rate of loss: 15.12%.
[embodiment 2]
Component is DMKO, octanol and Ortho-Aminophenol, and solvent is petroleum cracking carbon five.The weight ratio of DMKO, octanol and Ortho-Aminophenol is 1: 2.0: 3.0, inhibitor concentration 300ppm.Before adding stopper, the dicyclopentadiene yield: 96.62%, isoprene rate of loss: 22.39%; After adding stopper, the dicyclopentadiene yield: 95.89%, isoprene rate of loss: 16.40%.
[embodiment 3]
Component is DMKO, octanol and Ortho-Aminophenol, and solvent is petroleum cracking carbon five.The weight ratio of DMKO, octanol and Ortho-Aminophenol is 1: 3.0: 2.0, inhibitor concentration 200ppm.Before adding stopper, the dicyclopentadiene yield: 96.62%, isoprene rate of loss: 22.39%; After adding stopper, the dicyclopentadiene yield: 96.86%, isoprene rate of loss: 18.63%.
[embodiment 4]
Component is DMKO, octanol and Ortho-Aminophenol, and solvent is petroleum cracking carbon five.The weight ratio of DMKO, octanol and Ortho-Aminophenol is 1: 2.5: 2.5, inhibitor concentration 200ppm.Before adding stopper, the dicyclopentadiene yield: 96.62%, isoprene rate of loss: 22.39%; After adding stopper, the dicyclopentadiene yield: 96.75%, isoprene rate of loss: 19.26%.
[embodiment 5]
Component is DMKO, octanol and Ortho-Aminophenol, and solvent is petroleum cracking carbon five.The weight ratio of DMKO, octanol and Ortho-Aminophenol is 1: 2.5: 2.5, inhibitor concentration 300ppm.Before adding stopper, the dicyclopentadiene yield: 96.62%, isoprene rate of loss: 22.39%; After adding stopper, the dicyclopentadiene yield: 96.19%, isoprene rate of loss: 16.42%.
[embodiment 6]
Component is DMKO, octanol and Ortho-Aminophenol, and solvent is petroleum cracking carbon five.The weight ratio of DMKO, octanol and Ortho-Aminophenol is 1: 2.5: 2.5, inhibitor concentration 400ppm.Before adding stopper, the dicyclopentadiene yield: 96.62%, isoprene rate of loss: 22.39%; After adding stopper, the dicyclopentadiene yield: 95.87%, isoprene rate of loss: 14.23%.
[embodiment 7]
Component is DMKO, octanol and Ortho-Aminophenol, and solvent is petroleum cracking carbon five.The weight ratio of DMKO, octanol and Ortho-Aminophenol is 1: 2.5: 2.5, inhibitor concentration 500ppm.Before adding stopper, the dicyclopentadiene yield: 96.62%, isoprene rate of loss: 22.39%; After adding stopper, the dicyclopentadiene yield: 95.02%, isoprene rate of loss: 12.16%.
[embodiment 8]
Component is DMKO, octanol and Ortho-Aminophenol, and solvent is petroleum cracking carbon five.The weight ratio of DMKO, octanol and Ortho-Aminophenol is 1: 2.5: 2.5, inhibitor concentration 600ppm.Before adding stopper, the dicyclopentadiene yield: 96.62%, isoprene rate of loss: 22.39%; After adding stopper, the dicyclopentadiene yield: 94.85%, isoprene rate of loss: 10.17%.
[embodiment 9]
Component is DMKO, octanol and Ortho-Aminophenol, and solvent is isoprene.The weight ratio of DMKO, octanol and Ortho-Aminophenol is 1: 3.0: 3.5, inhibitor concentration 400ppm.Before adding stopper, the dicyclopentadiene yield: 96.62%, isoprene rate of loss: 22.39%; After adding stopper, the dicyclopentadiene yield: 96.17%, isoprene rate of loss: 18.54%.
[embodiment 10]
Component is DMKO, octanol and Ortho-Aminophenol, and solvent is isoprene.The weight ratio of DMKO, octanol and Ortho-Aminophenol is 1: 2.0: 4.0, inhibitor concentration 300ppm.Before adding stopper, the dicyclopentadiene yield: 96.62%, isoprene rate of loss: 22.39%; After adding stopper, the dicyclopentadiene yield: 96.29%, isoprene rate of loss: 17.26%.
[comparative example 1]
Component is DMKO, inhibitor concentration 300ppm.Before adding stopper, the dicyclopentadiene yield: 96.62%, isoprene rate of loss: 22.39%; After adding stopper, the dicyclopentadiene yield: 96.58%, isoprene rate of loss: 16.52%.
[comparative example 2]
Component is octanol, inhibitor concentration 300ppm.Before adding stopper, the dicyclopentadiene yield: 96.62%, isoprene rate of loss: 22.39%; After adding stopper, the dicyclopentadiene yield: 96.67%, isoprene rate of loss: 19.81%.
[comparative example 3]
Component is Ortho-Aminophenol, inhibitor concentration 300ppm.Before adding stopper, the dicyclopentadiene yield: 96.62%, isoprene rate of loss: 22.39%; After adding stopper, the dicyclopentadiene yield: 95.95%, isoprene rate of loss: 15.67%.
Claims (5)
1. the stopper for the hot dimerization of petroleum cracking C 5 fraction, it is characterized in that: it is comprised of DMKO, octanol and Ortho-Aminophenol; The weight ratio of DMKO, octanol and Ortho-Aminophenol is 1: 0.01～10.0: 0.1～12.0; DMKO, octanol and the Ortho-Aminophenol content in solvent is 1～20wt%.
2. a kind of stopper for the hot dimerization of petroleum cracking C 5 fraction according to claim 1, it is characterized in that: the weight ratio of DMKO, octanol and Ortho-Aminophenol is 1: 2.0～8.0: 1.0～4.0, and DMKO, octanol and the Ortho-Aminophenol total content in solvent is 7～12wt%.
3. a kind of stopper for the hot dimerization of petroleum cracking C 5 fraction according to claim 1, it is characterized in that: described solvent is petroleum cracking C 5 fraction or isoprene.
4. the application of a kind of stopper for the hot dimerization of petroleum cracking C 5 fraction according to claim 1 is characterized in that: the consumption of stopper in the petroleum cracking C 5 fraction is 50～1200ppm by weight.
5. the application of a kind of stopper for the hot dimerization of petroleum cracking C 5 fraction according to claim 4 is characterized in that: the consumption of stopper in the petroleum cracking C 5 fraction is 200～600ppm by weight.
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|---|---|---|---|---|
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| CN1324338A (en) * | 1998-11-05 | 2001-11-28 | 贝茨迪尔博恩公司 | Methods and compositions for inhibiting polymerization of ethylenically unsaturated hydrocarbons |
| CN1490286A (en) * | 2002-10-16 | 2004-04-21 | 中国石油化工股份有限公司 | Separating method for cracking C5-fraction |
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|---|---|---|---|---|
| US5907071A (en) * | 1998-04-21 | 1999-05-25 | Betzdearborn Inc. | Compositions and methods for inhibiting vinyl aromatic monomer polymerization |
| CN1324338A (en) * | 1998-11-05 | 2001-11-28 | 贝茨迪尔博恩公司 | Methods and compositions for inhibiting polymerization of ethylenically unsaturated hydrocarbons |
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| Title |
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| 李成等.碳五馏分分离及其阻聚剂的研究进展.《精细石油化工》.2008,第25卷(第4期),第64-67页. |
| 碳五馏分分离及其阻聚剂的研究进展;李成等;《精细石油化工》;20080731;第25卷(第4期);第64-67页 * |
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