WO2015080381A1 - 폴리올레핀의 정제 방법 - Google Patents
폴리올레핀의 정제 방법 Download PDFInfo
- Publication number
- WO2015080381A1 WO2015080381A1 PCT/KR2014/010024 KR2014010024W WO2015080381A1 WO 2015080381 A1 WO2015080381 A1 WO 2015080381A1 KR 2014010024 W KR2014010024 W KR 2014010024W WO 2015080381 A1 WO2015080381 A1 WO 2015080381A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gas
- linear low
- density polyethylene
- clause
- purge
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 48
- 229920000098 polyolefin Polymers 0.000 title claims abstract description 35
- 238000010926 purge Methods 0.000 claims abstract description 83
- 239000007789 gas Substances 0.000 claims abstract description 80
- 229920000092 linear low density polyethylene Polymers 0.000 claims abstract description 56
- 239000004707 linear low-density polyethylene Substances 0.000 claims abstract description 56
- 239000000178 monomer Substances 0.000 claims abstract description 54
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000005977 Ethylene Substances 0.000 claims abstract description 34
- 150000001336 alkenes Chemical class 0.000 claims abstract description 21
- 239000011261 inert gas Substances 0.000 claims abstract description 18
- 238000000746 purification Methods 0.000 claims abstract description 7
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 4
- 238000012685 gas phase polymerization Methods 0.000 claims description 17
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-octene Chemical group CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 claims description 16
- 125000004432 carbon atom Chemical group C* 0.000 claims description 11
- TVMXDCGIABBOFY-UHFFFAOYSA-N n-Octanol Chemical group CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 claims description 8
- ZGEGCLOFRBLKSE-UHFFFAOYSA-N 1-Heptene Chemical group CCCCCC=C ZGEGCLOFRBLKSE-UHFFFAOYSA-N 0.000 claims description 4
- AFFLGGQVNFXPEV-UHFFFAOYSA-N 1-decene Chemical group CCCCCCCCC=C AFFLGGQVNFXPEV-UHFFFAOYSA-N 0.000 claims description 4
- CRSBERNSMYQZNG-UHFFFAOYSA-N 1-dodecene Chemical group CCCCCCCCCCC=C CRSBERNSMYQZNG-UHFFFAOYSA-N 0.000 claims description 4
- JRZJOMJEPLMPRA-UHFFFAOYSA-N 1-nonene Chemical group CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims description 4
- DCTOHCCUXLBQMS-UHFFFAOYSA-N 1-undecene Chemical group CCCCCCCCCC=C DCTOHCCUXLBQMS-UHFFFAOYSA-N 0.000 claims description 4
- YWAKXRMUMFPDSH-UHFFFAOYSA-N pentene Chemical group CCCC=C YWAKXRMUMFPDSH-UHFFFAOYSA-N 0.000 claims description 4
- 229940069096 dodecene Drugs 0.000 claims description 2
- 239000000155 melt Substances 0.000 claims description 2
- LIKMAJRDDDTEIG-UHFFFAOYSA-N 1-hexene Chemical group CCCCC=C LIKMAJRDDDTEIG-UHFFFAOYSA-N 0.000 claims 2
- 239000012808 vapor phase Substances 0.000 claims 1
- 239000007792 gaseous phase Substances 0.000 abstract 1
- 239000000047 product Substances 0.000 description 13
- 239000012159 carrier gas Substances 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 11
- 229910001873 dinitrogen Inorganic materials 0.000 description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 7
- 229910052799 carbon Inorganic materials 0.000 description 7
- 238000012546 transfer Methods 0.000 description 7
- 229920006395 saturated elastomer Polymers 0.000 description 6
- 238000004088 simulation Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 239000012467 final product Substances 0.000 description 5
- 230000008016 vaporization Effects 0.000 description 5
- 238000005094 computer simulation Methods 0.000 description 4
- 239000000376 reactant Substances 0.000 description 4
- 238000009834 vaporization Methods 0.000 description 4
- 238000009835 boiling Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- -1 1-nuxene Chemical group 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 241000183024 Populus tremula Species 0.000 description 1
- HQZJODBJOBTCPI-VHCPEVEQSA-N [(3ar,4s,6ar,8r,9s,9ar,9br)-8-hydroxy-3,6-dimethylidene-2-oxospiro[3a,4,5,6a,7,8,9a,9b-octahydroazuleno[4,5-b]furan-9,2'-oxirane]-4-yl] (2s)-2-methyloxirane-2-carboxylate Chemical compound O([C@@H]1[C@H]2C(=C)C(=O)O[C@H]2[C@@H]2[C@@]3(OC3)[C@H](O)C[C@H]2C(=C)C1)C(=O)[C@]1(C)CO1 HQZJODBJOBTCPI-VHCPEVEQSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052743 krypton Inorganic materials 0.000 description 1
- DNNSSWSSYDEUBZ-UHFFFAOYSA-N krypton atom Chemical compound [Kr] DNNSSWSSYDEUBZ-UHFFFAOYSA-N 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012968 metallocene catalyst Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052754 neon Inorganic materials 0.000 description 1
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 239000002685 polymerization catalyst Substances 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229910052704 radon Inorganic materials 0.000 description 1
- SYUHGPGVQRZVTB-UHFFFAOYSA-N radon atom Chemical compound [Rn] SYUHGPGVQRZVTB-UHFFFAOYSA-N 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- GNWCEVOXWDZRJH-UHFFFAOYSA-N repin Natural products CC1(CO1)C(=O)OC2CC3C(OC(=O)C3=C)C4C(CC(O)C45CO5)C2=C GNWCEVOXWDZRJH-UHFFFAOYSA-N 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000011949 solid catalyst Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F6/00—Post-polymerisation treatments
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F6/00—Post-polymerisation treatments
- C08F6/001—Removal of residual monomers by physical means
- C08F6/005—Removal of residual monomers by physical means from solid polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F10/00—Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F6/00—Post-polymerisation treatments
- C08F6/14—Treatment of polymer emulsions
- C08F6/16—Purification
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F6/00—Post-polymerisation treatments
- C08F6/26—Treatment of polymers prepared in bulk also solid polymers or polymer melts
- C08F6/28—Purification
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
- C08C4/00—Treatment of rubber before vulcanisation, not provided for in groups C08C1/00 - C08C3/02
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F210/00—Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
- C08F210/16—Copolymers of ethene with alpha-alkenes, e.g. EP rubbers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J11/00—Recovery or working-up of waste materials
- C08J11/02—Recovery or working-up of waste materials of solvents, plasticisers or unreacted monomers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/08—Copolymers of ethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/18—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
- C08J2323/20—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms having four to nine carbon atoms
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/582—Recycling of unreacted starting or intermediate materials
Definitions
- the present invention relates to a method for purifying a polyolefin, and more particularly, to a method for purifying a polyolefin which can more easily and efficiently remove residual monomers of alkenes having a high carbon number.
- the polyolefin produced in such a gas phase polymerization process may contain a large amount of residual monomers, which may cause an explosion accident in the processing stage of the product, and may be mixed with the final product to reduce the physical properties of the product, or product defects. Problems such as this can occur and should be removed from the final product.
- a purge of nitrogen gas with polygiene gas is carried out to vaporize the residual monomer, and The process of separation was included.
- Patent Document 0001 Korean Patent Publication No. 2011-0084161
- the present invention provides a method for purifying polyolefin, comprising contacting a linear low density polyethylene synthesized through a gas phase polymerization reaction with a purge gas containing ethylene gas and an inert gas in a purge apparatus.
- a method for purifying polyolefin comprising contacting a linear low density polyethylene synthesized through a gas phase polymerization reaction with a purge gas containing ethylene gas and an inert gas in a purge apparatus.
- the inventors of the present invention may cause an explosion accident in a product processing step in the presence of a gaseous or liquid residual monomer in a polyolefin prepared by a gas phase polymerization reaction, in particular, a linear low density polyethylene, and is mixed with a final product to degrade product properties.
- the method for purifying the polyolefin of the embodiment does not use only an inert gas such as nitrogen as the purge gas in the purge device, but also uses ethylene gas together to vaporize alkenes having a higher boiling point than 5 carbon atoms in the residual monomer.
- the ethylene gas used as the purge gas can be used as a reactant in the gas phase polymerization process of linear low density polyethylene, thereby improving the efficiency and economic efficiency of the process.
- the linear low density polyethylene may have a monomer remaining in the gas phase polymerization process of the linear low density polyethylene. And, because it is mixed with the final product, there is a woman to cause problems such as lowering the physical properties of the product, should be removed from the linear low density polyethylene.
- the pure linear low density polyethylene is a linear low density polyethylene separated through a purification process, and refers to a compound including 99.9% or more of linear low density polyethylene or substantially consisting of linear low density polyethylene.
- the linear low density polyethylene is at least one residue selected from the group consisting of ethylene, 1-pentene, 1-nuxene, 1-heptene, 1-octene, 1-nonene, 1-decene, 1-undecene, and 1-dodecene It may include a monomer.
- the residual monomer is meant to include all compounds remaining after the gas phase polymerization reaction among the monomers used as reactants in the gas phase polymerization reaction of linear low density polyethylene.
- the linear low density polyethylene may include ethylene and 1-octene.
- the ethylene and 1-octene are reactant monomers used in the preparation of linear low density polyethylene, and ethylene and 1-octene may be mixed with the linear low density polyethylene in a gaseous or liquid form. And, the residual monomer is based on the weight of the entire linear low density polyethylene
- the linear low density polyethylene may be formed by gas phase polymerization of ethylene and an alken having 3 to 10 carbon atoms.
- the linear low density polyethylene using ethylene and alkene having 3 to 10 carbon atoms as a reactant without limitation by applying a gas phase polymerization apparatus and method, such as a stirred bed reactor, a fluidized bed reaction vessel, which is commonly known to be used for the production of linear low density polyethylene. Can be formed.
- the linear low density polyethylene may have a density of 0.500 to 1.000 g / ml, preferably 0.900 to 0.940 g / ml.
- the linear low density polyethylene may have a melt index of 0.1 to 100 g / 10 min, preferably 0.5 to 50 g / 10 m in, measured according to ASTM D1238.
- the purge gas of the method for purifying the polyolefin of the above embodiment is meant to include both the gas supplied for purging and the carrier gas used for supplying polyolefins synthesized through the gas phase polymerization reaction to the purge device.
- This purge gas includes an inert gas that does not participate in the polymerization reaction and a gas for removing the activity of the polymerization catalyst, and the residual monomer contained in the linear low density polyethylene ⁇ in the purge device is continuously ventilated to remove it from the purge device.
- the vapor pressure of the monomer can be reduced below the saturated vapor pressure to vaporize residual monomers.
- the purge gas may include an ethylene gas and an inert gas.
- the inert gas include helium, neon, argon, krypton, xenon, radon gas, and nitrogen gas, but nitrogen gas is preferably used for easier reaction and reaction stability.
- the purge gas may further include high temperature water vapor, carbon monoxide, and the like in addition to the ethylene gas and the inert gas.
- the ethylene gas and the inert gas may be injected into the purge device, respectively, or in a mixed state.
- the commercial ethylene gas may selectively supply polyolefins synthesized through gaseous polymerization reaction with nitrogen gas to the purge device. It can be used as a carrier gas.
- the ethylene gas is characterized in that it is mixed with alkenes of 5 or more carbon atoms to increase the saturated vapor pressure of alkenes of 5 or more carbon atoms, and can lower the boiling point of alkenes of 5 or more carbon atoms, so that only inert gas is used as the purge gas.
- Alkenes having 5 or more carbon atoms, which were difficult to vaporize and separate, can also be vaporized.
- the volume ratio of the ethylene gas and the inert gas of the purge gas is 1:99 to
- purge gas can be injected into the purge apparatus using a high pressure supply line.
- the purge gas can be in uniform contact with the linear low density polyethylene accumulated in the purge apparatus, and the residual monomer can be vaporized more efficiently.
- the purge gas may be a temperature of 25 to 100 ° C, preferably 60 to 10 (C.
- the temperature of the purge gas is related to the vaporization of carbonaceous alkenes and the state of linear low density polyethylene, 25 If it is less than ° C, carbonaceous alkenes are not vaporized and may remain in the linear low density polyethylene even after the refining process, and if it exceeds 10 CTC, the linear low density polyethylene may be melted inside the purge apparatus, resulting in a decrease in commercial productability.
- the purge gas may have a pressure of 1 to 50 kgf / cirf, preferably 5 to 35 kgf / cuf
- the pressure of the purge gas may be related to the ventilation of the purge gas and the vaporization of residual monomers. If less than lkgf / cuf, the purge gas may not be properly ventilated, and if it exceeds 50kgf / cuf, the saturated vapor pressure will be lowered and the residual mono The mer may not vaporize.
- the step of contacting the linear low density polyethylene and the purge gas of the method for purifying the polyolefin may be performed for 10 minutes to 12 hours. That is, the linear low density polyethylene and the purge gas are supplied to the purge device, and they can contact and react for 10 minutes to 12 hours. If the contact time is too short, some residual monomer may not be vaporized and may remain in a liquid state.
- the step of contacting the linear low density polyethylene and the purge gas may be performed at a temperature of 25 to loot :.
- the contact temperature is the residual monomer It is related to the saturation vapor pressure, depending on the temperature may vary the vaporization of alkenes having a high carbon number and the state of the linear low density polyethylene.
- the saturated vapor pressure inside the purge device may be too low, and in this case, even if the residual monomer is continuously vented with the purge gas and removed from the purge device, the vapor pressure of the residual monomer does not drop below the saturated vapor pressure, thereby increasing the number of carbon atoms. Alkenes may not vaporize.
- the contact temperature exceeds lt rc, the linear low density polyethylene may be molten in the purge device, thereby decreasing commercial productability.
- the step of contacting the linear low density polyethylene and the purge gas may be performed at a pressure of 1 to 50kgf / crf.
- the contact pressure is related to the purging of the purge gas and the vaporization of the residual monomer. If the concentration is less than lkgf / cuf, the purge gas may not be properly ventilated. If the contact pressure exceeds 50 kgf / ciif, the saturated vapor pressure is lowered to prevent the residual monomer from vaporizing. You may not.
- the purge device refers to a space or structure to which a linear low density polyethylene produced through a gas phase polymerization reaction and a purge gas including ethylene gas and an inert gas can contact each other.
- the purge device has a device configuration consisting of a purge gas inlet line, a linear low density polyethylene and a carrier gas inlet line, a ventilation line, a pure linear low density polyethylene discharge line, each of these components to supply the purge gas, residual monomers send a linear low density polyethylene, and the supply of the carrier gas, separated from the gasification of residual monomer with a carrier gas and, a purge gas that contains a purification unit for reproduction, to transmit a linear low density polyethylene, the remaining monomer is removed by granulation process for commercialization Can play a role.
- the polyolefin purification method may further comprise the step of separating the gas produced by contacting the linear low density polyethylene and the purge gas.
- the residual monomer contained in the linear low density polyethylene may be vaporized by contacting the purge gas containing the ethylene gas and the inert gas, and the vaporized residual monomer and the purge gas may be purified by using separate angles and compressions. Can be separated.
- the separated residual monomer and ethylene gas may be recycled to the gas reactor to prepare a linear low density polyethylene again.
- 1 schematically shows an example purge apparatus of the present invention.
- the purge device 6 of the example includes a transfer line 1 to a purge device of linear low density polyethylene and a carrier gas containing residual monomers, and a supply line of gas to be added to the carrier gas ( 2), purge gas input line 3, purge gas, carrier gas, discharge line 4 of vaporized residual monomer, and discharge line 5 of pure linear low density polyethylene product;
- a method for purifying a polyolefin which can more easily and efficiently remove residual monomers of alkenes having a high carbon number.
- Figure '1 is a schematic view of a purge apparatus of the purification method of the one embodiment polrieul repin. .
- Linear low density poly inflow to purge bin is set as residual monomer in lephine to Ethylene (C2) and l-0ctene (C8). After the addition, residual monomers were vaporized to confirm that they were separated from the product.
- Computer simulation was used aspen plus simulation program, the temperature and pressure applied to the computer simulation, the dosage of each component is shown in Table 1 below. And, the calculation result of the computer simulation in each condition is shown in Table 1 below. Comparative Example 1 Except that ethylene gas was not added to the carrier gas and the purge gas, the transfer simulation was carried out in the same manner as in the transfer simulation conditions of Example 1, and the results are shown in Table 1 below.
- the input and discharge lines 1 to 4 are as follows: 1. Residual monomer discharged from the reactor 2. Nitrogen gas and ethylene gas for conveying and purging purposes
- Example 1 and Example 3 results are the same as in Example 1 and Example 3, in which the composition of the monomers introduced in the same structure as in Example 1 was changed in temperature and pressure, and Comparative Examples 2 and 3, respectively, corresponding thereto. This is observed, and from this it can be seen that not only nitrogen gas but also ethylene gas as a carrier gas and a purge gas may further vaporize and separate monomers of alkenes having a large carbon number such as 1-octene.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201480064139.0A CN105764933B (zh) | 2013-11-29 | 2014-10-23 | 纯化聚烯烃的方法 |
JP2016535042A JP2016538398A (ja) | 2013-11-29 | 2014-10-23 | ポリオレフィンの精製方法 |
US15/038,099 US9790292B2 (en) | 2013-11-29 | 2014-10-23 | Method of purifying polyolefin |
EP14866065.7A EP3075749A4 (en) | 2013-11-29 | 2014-10-23 | Method for purifying polyolefin |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020130147854A KR101534149B1 (ko) | 2013-11-29 | 2013-11-29 | 폴리올레핀의 정제 방법 |
KR10-2013-0147854 | 2013-11-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015080381A1 true WO2015080381A1 (ko) | 2015-06-04 |
Family
ID=53199292
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2014/010024 WO2015080381A1 (ko) | 2013-11-29 | 2014-10-23 | 폴리올레핀의 정제 방법 |
Country Status (6)
Country | Link |
---|---|
US (1) | US9790292B2 (ko) |
EP (1) | EP3075749A4 (ko) |
JP (1) | JP2016538398A (ko) |
KR (1) | KR101534149B1 (ko) |
CN (1) | CN105764933B (ko) |
WO (1) | WO2015080381A1 (ko) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111133011B (zh) * | 2017-08-01 | 2022-12-27 | 埃克森美孚化学专利公司 | 聚烯烃固体回收方法 |
US11390697B2 (en) * | 2017-08-01 | 2022-07-19 | Exxonmobil Chemical Patents Inc. | Methods of polyolefin solids recovery |
CN114014960B (zh) * | 2021-10-21 | 2023-07-11 | 金聚合科技(宁波)有限公司 | 一种用于聚烯烃提纯的系统和方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5376742A (en) * | 1993-09-23 | 1994-12-27 | Quantum Chemical Corporation | Monomer recovery in gas phase fluid bed olefin polymerization |
US5521264A (en) * | 1995-03-03 | 1996-05-28 | Advanced Extraction Technologies, Inc. | Gas phase olefin polymerization process with recovery of monomers from reactor vent gas by absorption |
KR20110084161A (ko) | 2008-10-03 | 2011-07-21 | 이네오스 유럽 리미티드 | 폴리머의 제조 방법 |
KR101197501B1 (ko) * | 2008-01-18 | 2012-11-09 | 토탈 리서치 앤드 테크놀로지 펠루이 | 중합 공정으로부터 모노머를 회수하기 위한 공정 |
US20130291720A1 (en) * | 2010-12-17 | 2013-11-07 | Univation Technologies, Llc | Systems and Methods for Recovering Hydrocarbons From a Polyolefin Purge Gas Product |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4372758A (en) * | 1980-09-02 | 1983-02-08 | Union Carbide Corporation | Degassing process for removing unpolymerized monomers from olefin polymers |
JPS6079017A (ja) * | 1983-10-05 | 1985-05-04 | Chisso Corp | ポリオレフイン粉体中に残存する未反応オレフインの回収方法 |
JPH0439305A (ja) * | 1990-06-04 | 1992-02-10 | Mitsubishi Petrochem Co Ltd | パージ容器における樹脂の処理方法 |
JP3162241B2 (ja) * | 1994-01-18 | 2001-04-25 | 株式会社日立ビルシステム | エレベータの異常データ収集装置 |
GB9622715D0 (en) * | 1996-10-31 | 1997-01-08 | Bp Chem Int Ltd | Nozzle |
JP2004204028A (ja) | 2002-12-25 | 2004-07-22 | Sumitomo Chem Co Ltd | ポリオレフィン気相重合プロセス |
EP1613668B1 (en) | 2003-04-17 | 2012-08-08 | Basell Poliolefine Italia S.r.l. | Gas-phase olefin polymerization process |
BRPI0714078B1 (pt) * | 2006-08-03 | 2019-03-12 | Basell Polyolefine Gmbh | Processo para o acabamento de poliolefinas |
-
2013
- 2013-11-29 KR KR1020130147854A patent/KR101534149B1/ko active IP Right Grant
-
2014
- 2014-10-23 EP EP14866065.7A patent/EP3075749A4/en active Pending
- 2014-10-23 WO PCT/KR2014/010024 patent/WO2015080381A1/ko active Application Filing
- 2014-10-23 US US15/038,099 patent/US9790292B2/en active Active
- 2014-10-23 JP JP2016535042A patent/JP2016538398A/ja active Pending
- 2014-10-23 CN CN201480064139.0A patent/CN105764933B/zh active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5376742A (en) * | 1993-09-23 | 1994-12-27 | Quantum Chemical Corporation | Monomer recovery in gas phase fluid bed olefin polymerization |
US5521264A (en) * | 1995-03-03 | 1996-05-28 | Advanced Extraction Technologies, Inc. | Gas phase olefin polymerization process with recovery of monomers from reactor vent gas by absorption |
KR101197501B1 (ko) * | 2008-01-18 | 2012-11-09 | 토탈 리서치 앤드 테크놀로지 펠루이 | 중합 공정으로부터 모노머를 회수하기 위한 공정 |
KR20110084161A (ko) | 2008-10-03 | 2011-07-21 | 이네오스 유럽 리미티드 | 폴리머의 제조 방법 |
US20130291720A1 (en) * | 2010-12-17 | 2013-11-07 | Univation Technologies, Llc | Systems and Methods for Recovering Hydrocarbons From a Polyolefin Purge Gas Product |
Non-Patent Citations (1)
Title |
---|
See also references of EP3075749A4 * |
Also Published As
Publication number | Publication date |
---|---|
CN105764933B (zh) | 2018-05-04 |
KR20150062819A (ko) | 2015-06-08 |
EP3075749A1 (en) | 2016-10-05 |
US20160289347A1 (en) | 2016-10-06 |
JP2016538398A (ja) | 2016-12-08 |
EP3075749A4 (en) | 2017-06-28 |
US9790292B2 (en) | 2017-10-17 |
KR101534149B1 (ko) | 2015-07-03 |
CN105764933A (zh) | 2016-07-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR101084370B1 (ko) | 초저 불순물 함량을 갖는 폴리올레핀의 제조 방법 | |
KR101357569B1 (ko) | 폴리올레핀 마무리가공 방법 | |
JP5625056B2 (ja) | オレフィン系ポリマーのための重合方法 | |
EP2627679B1 (en) | Improved ethylene separation | |
US9567411B2 (en) | Polymerisation process | |
US9790298B2 (en) | Component separations in polymerization | |
CN107849168A (zh) | 从烯烃聚合方法中回收未反应的单体 | |
EP2836284A2 (en) | Component separations in polymerization | |
CN110114128B (zh) | 膜和变压吸附混合inru方法 | |
WO2015080381A1 (ko) | 폴리올레핀의 정제 방법 | |
MX2014012359A (es) | Recuperacion de etileno por absorcion. | |
CN113767119B (zh) | 包括悬浮介质的后处理的制备乙烯聚合物的悬浮方法 | |
JP6955834B2 (ja) | 反応器カスケードにおけるエチレンコポリマーを製造するための懸濁プロセス | |
CN113840843B (zh) | 包括干燥聚合物颗粒的制备乙烯聚合物的悬浮方法 | |
EP3397654B1 (en) | Improved gas phase olefins polymerization process operating in condensing mode | |
RU2786358C1 (ru) | Суспензионный способ получения полимеров этилена на основе переработки суспензионной среды | |
RU2787996C1 (ru) | Суспензионный способ получения полимеров этилена на основе сушки полимерных частиц |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 14866065 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 15038099 Country of ref document: US |
|
REEP | Request for entry into the european phase |
Ref document number: 2014866065 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2014866065 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 2016535042 Country of ref document: JP Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |