WO2006109576A1 - ポリイソシアネート連続製造装置 - Google Patents
ポリイソシアネート連続製造装置 Download PDFInfo
- Publication number
- WO2006109576A1 WO2006109576A1 PCT/JP2006/306633 JP2006306633W WO2006109576A1 WO 2006109576 A1 WO2006109576 A1 WO 2006109576A1 JP 2006306633 W JP2006306633 W JP 2006306633W WO 2006109576 A1 WO2006109576 A1 WO 2006109576A1
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- WO
- WIPO (PCT)
- Prior art keywords
- polyamine
- polyisocyanate
- circulation line
- supplied
- supply pipe
- Prior art date
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Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C263/00—Preparation of derivatives of isocyanic acid
- C07C263/10—Preparation of derivatives of isocyanic acid by reaction of amines with carbonyl halides, e.g. with phosgene
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/18—Stationary reactors having moving elements inside
- B01J19/1868—Stationary reactors having moving elements inside resulting in a loop-type movement
- B01J19/1881—Stationary reactors having moving elements inside resulting in a loop-type movement externally, i.e. the mixture leaving the vessel and subsequently re-entering it
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
- B01J4/001—Feed or outlet devices as such, e.g. feeding tubes
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C265/00—Derivatives of isocyanic acid
- C07C265/14—Derivatives of isocyanic acid containing at least two isocyanate groups bound to the same carbon skeleton
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/20—Jet mixers, i.e. mixers using high-speed fluid streams
- B01F25/23—Mixing by intersecting jets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/50—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/60—Pump mixers, i.e. mixing within a pump
- B01F25/64—Pump mixers, i.e. mixing within a pump of the centrifugal-pump type, i.e. turbo-mixers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00051—Controlling the temperature
- B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
- B01J2219/00087—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor
- B01J2219/00096—Plates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00051—Controlling the temperature
- B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
- B01J2219/00105—Controlling the temperature by indirect heating or cooling employing heat exchange fluids part or all of the reactants being heated or cooled outside the reactor while recycling
- B01J2219/00108—Controlling the temperature by indirect heating or cooling employing heat exchange fluids part or all of the reactants being heated or cooled outside the reactor while recycling involving reactant vapours
Definitions
- the present invention relates to a polyisocyanate continuous production apparatus that is a raw material for polyurethane.
- Polyisocyanate used as a raw material for polyurethane is industrially produced by reacting polyamine and chlorochloride with isocyanate.
- Such a polyisocyanate is industrially supplied by reacting a polyamine solution containing a polyamine, a carbonyl chloride solution containing a carbonyl chloride, and a solvent by continuously supplying them to the reactor.
- the produced polyisocyanate is produced by continuously distilling from the reactor (for example, see Patent Document 1 below).
- Patent Document 1 Japanese Patent Laid-Open No. 2004-035492
- Patent Document 2 Japanese Patent Laid-Open No. 57-165358
- carbamoyl chloride is instantaneously formed by contact between polyamine and chlorochloride, and then the carbamoyl chloride is gradually converted to isocyanate. Is converted to Since carbamoyl chloride is difficult to dissolve in an organic solvent, it becomes a slurry when the polyamine and the salt carbocycle come into contact with each other in the organic solvent.
- reaction solution circulation line when polyamine and salty carbon are supplied to the reaction solution circulation line, the reaction solution is circulated.
- the polyisocyanate in the reaction solution reacts with the polyamine to produce a urea product, which is a by-product, the yield of the polyisocyanate decreases!
- An object of the present invention is to reduce by-products by quickly contacting polyamine and salt carbonate after feeding in order to suppress a favorable side reaction between polyamine and polyisocyanate. Then, it is providing the polyisocyanate continuous manufacturing apparatus which can aim at the improvement of the yield of polyisocyanate.
- the continuous polyisocyanate production apparatus of the present invention comprises a polyisocyanate continuous production apparatus for continuously producing a polyisocyanate by reacting a polyamine and a salt carbonate.
- polyamine supply means for supplying polyamine to the circulation line
- a salty carbon supply means for supplying salty carbon to the circulation line
- the polyamine supply means force The polyamine supplied to the circulation line is brought into contact with the chloride power sulfonyl supply means force in the presence of a circulating reaction solution.
- the contact means is provided with a mixing means for mixing the salted carbon and polyamine that have been contacted with each other and the circulating reaction liquid by shearing.
- the reaction liquid circulated in the contact means after being supplied to the circulation line by the polyamine, the salt carbonyl, the force polyamine supply means and the salt carbonyl supply means, respectively.
- the contacted salt carbon and polyamine and the circulating reaction liquid are mixed by shearing by a mixing means.
- This shear causes the polyamine and the salt carbocycle to come into contact with each other in the form of fine droplets in the reaction solution, so that a uniform slurry of carbamoyl chloride and polyamine hydrochloride can be instantly generated. Can do. Therefore, the polyisotope in the circulating reaction solution
- the reaction between cyanate and polyamine can be suppressed, the production of urea as a by-product can be reduced, and the yield of polyisocyanate can be improved.
- the circulation means does not substantially react the polyamine supplied from the polyamine supply means to the circulation line with the polyisocyanate in the circulating reaction solution. Is preferred.
- a distance between the contact means and the mixing means is 1000 mm or less.
- the distance between the contact means and the mixing means is 1000 mm or less, the reaction liquid circulating in the circulation line and the polyamine supply means force are disturbed by the polyamine supplied to the circulation line. Contact by flow mixing can be reduced, and generation of urea as a by-product can be further suppressed.
- the linear velocity of the polyamine supplied from the polyamine supply means to the circulation line in the cross section of the polyamine supply means is 0.5 to: LOmZsec, and the salty carbonyl supply means
- the linear velocity force of the salt carbonyl supplied to the circulation line in the cross section of the salt carbonate supply means is 0.5 to LOmZsec, immediately before being supplied to the contact means.
- the linear velocity of the reaction liquid in the circulation line is preferably 0.3 to 5 mZsec.
- the linear velocity force of the polyamine in the cross section of the polyamine supply means is 0.5 to 10 mZsec
- the linear velocity of the chloride chloride in the cross section of the chlorochloride supply means is 0.5 to: LOmZsec If the linear velocity of the reaction liquid in the circulation line is 0.3 to 5 mZ sec, the yield of polyisocyanate can be improved.
- the polyamine supplied from the supply means, the carbonyl chloride supplied from the carbonyl chloride supply means, and the reaction solution form substantially three layers.
- the polyamine supplied from the polyamine supply means, the salty carbonyl supply means force, the supplied salty carbonyl, and the reaction solution form substantially three layers. As a result, it is possible to reduce the chance of contact between the supplied polyamine and the polyisocyanate in the reaction solution.
- the polyamine supply means has a polyamine supply pipe force in which an outflow side end is inserted into the circulation line, and the salty carbon supply means is connected to the outflow side end in the circulation line.
- the outlet portion of the polyamine supply pipe is disposed in the vicinity of the inner wall surface of the circulation line, and the contact means force is directed to the mixing means.
- the outlet side end of the salt carbonyl supply pipe is directed toward the polyamine effluent to which the outlet side end force of the polyamine supply pipe is also supplied. It is suitable that it is opened.
- the outflow side end of the polyamine supply pipe is disposed in the vicinity of the inner wall surface of the circulation line, and the contact means force is also directed to the mixing means. Further, if the outlet side end of the salty carbon supply pipe is opened toward the polyamine effluent to which the outlet side end force of the polyamine supply pipe is also supplied, the polyamine supply pipe force is supplied. Polyamine effluent force Since it is covered by the inner wall of the circulation line and the salt carbonyl supplied from the outlet side end of the salt carb feed pipe, contact with the reaction solution is suppressed, The reaction between the polyisocyanate in the reaction solution and the supplied polyamine is prevented, and the yield of polyisocyanate can be improved.
- a cooling device is interposed in the middle of the circulation line, and the temperature of the reaction solution after the supply of polyamine and salt carbonyl in the circulation line is 120 ° C. The following is preferable.
- the temperature of the reaction solution after supplying the polyamine and the salt carbonyl in the circulation line is set to 120 ° C. or less, the production of urea bodies as by-products can be further suppressed.
- the polyisocyanate in the circulating reaction liquid is The reaction between cyanate and polyamine can be suppressed, the production of urea as a by-product can be reduced, and the yield of polyisocyanate can be improved.
- FIG. 2 is a schematic configuration diagram showing a raw material mixing section of the polyisocyanate continuous production apparatus shown in FIG.
- FIG. 1 is a schematic configuration diagram showing an embodiment of a polyisocyanate continuous production apparatus.
- this polyisocyanate continuous production apparatus 1 has a low-temperature reaction type apparatus configuration, and serves as a reactor 4 as a reaction tank and a circulation means for circulating a reaction liquid to the reactor 4.
- the circulation part 2 is provided.
- the circulation section 2 includes a circulation line 7, a raw material mixing section 8 as a contact means, a polyamine supply pipe 9 as a polyamine supply means, a carbonyl chloride supply pipe 10 as a carbonyl chloride supply means, and a high shear as a mixing means.
- Pump 3 liquid pump 5, and cooling as a cooling device 6 and equipped.
- the circulation line 7 has an upstream side (hereinafter referred to as “upstream side” and “downstream side” based on the flow direction of the reaction solution unless otherwise specified) and a downstream side end. It is formed as a closed line connected to the reactor 4, and the reaction solution is circulated through the reactor 4.
- the raw material mixing section 8 is configured as a part of a circulation line 7 connected to a polyamine supply pipe 9 and a salty carbon supply pipe 10.
- the polyamine supply pipe 9 is a corrosion-resistant steel pipe force for transporting the polyamine, and its inflow end is connected to a polyamine storage tank (not shown) that stores the polyamine, and its outflow end 11 is connected to the raw material mixing section 8. Connected.
- the polyamine supply pipe 9 is disposed obliquely in the vicinity of the circulation line 7 so that the outflow side end 11 side gradually approaches the circulation line 7.
- the outflow side end 11 is inserted into the circulation line 7 from one side of the circulation line 7 in an inclined state.
- the outflow side end 11 is formed so as to bend toward the downstream side along the flow direction (circulation direction) of the reaction solution, and is arranged near the inner wall surface on one side in the circulation line 7. Yes.
- the opening 12 of the polyamine supply pipe 9 is opened toward the downstream side by force.
- the salt carbonyl supply pipe 10 is made of a corrosion-resistant steel pipe for transporting the salt carbo, and an inflow end of the salt carbonyl supply tank stores the salt carbonyl.
- the outflow side end portion 13 is connected to the raw material mixing portion 8.
- the carbonyl chloride supply pipe 10 is disposed on the other side opposite to the polyamine supply pipe 9 with respect to the circulation line 7, and in the vicinity of the circulation line 7, the outflow side end 13 side is the circulation line.
- the outlet side end 13 side of the circulation line 7 is also inserted into the circulation line 7 in an inclined state.
- the insertion position of the salt carbonyl supply pipe 10 with respect to the circulation line 7 is arranged so as to be opposed to the insertion position of the polyamine supply pipe 9 with respect to the circulation line 7 in the radial direction of the circulation line 7. .
- the outflow side end 13 of the salt carbonyl supply pipe 10 is inclined with respect to the flow direction of the reaction solution and extends straight, and the opening 14 of the outflow side end 13 is connected to the polyamine supply. It is disposed near the opening 12 of the supply pipe 9 and opens toward the polyamine effluent supplied from the opening 12 of the polyamine supply pipe 9. More specifically, the opening 14 of the carbonyl chloride supply pipe 10 is disposed on the other side of the opening 12 of the polyamine supply pipe 9, and is one end in the radial direction of the opening 14 of the salt carbonyl supply pipe 10. Force Located near the opening 12 of the polyamine supply pipe 9 or slightly upstream, the other radial end of the opening 14 of the salt carbonyl supply pipe 10 is downstream of the opening 12 of the polyamine supply pipe 9. It is preferable to arrange on the side.
- the high shear pump 3 is interposed in the circulation line 7 on the downstream side of the raw material mixing section 8, and is subjected to slurry (polyamine and salt water) in the reaction liquid by shearing force.
- slurry polyamine and salt water
- carbamoyl chloride and polyamine hydrochloride slurry generated by the contact of carbonyl can be highly dispersed.
- a centrifugal pump or a rotary pump is used.
- the slurry is highly sheared by high-speed rotation of the impeller (impeller) in the casing.
- a canned pump is preferably used.
- a rotary pump slurry is highly sheared by high-speed rotation of gears, partition plates or screws in the casing.
- the rotational speed of the high shear pump 3 in which the gear pump is used is set as appropriate, and is, for example, 1000 to 5000 min- 1 .
- the separation distance L between the outlet end 11 of the polyamine supply pipe 9 and the opening 12 is 1000 mm or less, preferably 500 mm or less, more preferably 25 Omm. It arrange
- the separation distance L is longer than this, the opportunity for the reaction liquid circulating in the circulation line 7 and the polyamine supplied from the polyamine supply pipe 9 to the circulation line 7 to come into contact with each other by turbulent mixing is increased, and the side There is a risk of promoting the formation of a urea body as a product, but if this separation distance L or less, the reaction liquid circulating in the circulation line 7 and the polyamine supplied to the circulation line 7 from the polyamine supply pipe 9 The contact by turbulent mixing can be reduced, and the formation of urea bodies as by-products can be suppressed.
- the reactor 4 is interposed on the downstream side of the high shear pump 3 in the circulation line 7.
- This The reactor 4 is not particularly limited as long as the supplied polyamine and salt carbonate can be reacted with isocyanate.
- a continuous reactor equipped with a stirring blade is used.
- the reactor 4 is preferably configured as a multistage tank, in which case the reactor 4 shown in FIG. 1 serves as the first stage reactor, and the second stage (not shown) is used in the next step. The reactor is connected.
- the liquid feed pump 5 is interposed on the downstream side of the reactor 4 in the circulation line 7.
- the liquid feed pump 5 is not particularly limited as long as it can transport the reaction liquid, and the above-described centrifugal pump, rotary pump, and reciprocating pump are used.
- the cooler 6 is interposed in the circulation line 7 on the downstream side of the liquid feed pump 5 (the discharge side of the liquid feed pump 5).
- the liquid feed pump 5 is not particularly limited as long as the reaction liquid can be cooled.
- a heat exchanger in which a refrigerant (cooling water) is circulated is used.
- the reaction solution is cooled so that the temperature of the reaction solution after supplying the polyamine and the chlorochloride in the circulation line 7 is 120 ° C or lower.
- the raw material mixing section 8 in the middle of the circulation line 7, along the flow direction of the reaction solution, the raw material mixing section 8, the high shear pump 3, the reactor 4, and the feed pump 5 And the cooler 6 are sequentially arranged, and the reaction fluid force in the circulation line 7 is circulated.
- polyamine is supplied from the polyamine supply pipe 9 to the raw material mixing section 8 and the raw material is supplied from the chloride chloride supply pipe 10.
- a salty carbon is supplied to the mixing section 8.
- the polyamine is prepared in the polyamine storage tank as it is or as a polyamine solution.
- the polyamine solution is prepared by dissolving polyamine in an organic solvent.
- the polyamine is stored as it is, it is mixed in an organic solvent mixing section provided in the polyamine supply pipe 9 to be prepared as a polyamine solution, and supplied from the polyamine supply pipe 9 to the raw material mixing section 8 as a polyamine solution. .
- the polyamine is a polyamine corresponding to the polyisocyanate used in the production of the polyurethane, and is not particularly limited.
- the polyamine corresponding to the polymethylene polyphenylene polyisocyanate (MDI) is used.
- Aromatic diamines such as polyphenylene-polyamine (MDA), tolylenediamine (TDA) corresponding to tolylene diisocyanate (TDI), such as xylylene Aroaliphatic diamines such as xylylenediamine (XDA) corresponding to range isocyanate (XDI), tetramethylxylylenediamine (TMXDA) corresponding to tetramethylxylylene diisocyanate (TMXDI), such as bis Bis (aminomethyl) norbornane (NBDA) corresponding to (isocyanatomethyl) norbornane (NBDI), 3-aminomethyl corresponding to 3-isocyanatomethyl-3,5,5-trimethylcyclohexylisocyanate (IPDI) 1,4,4'-methylenebis (cyclohexylamine) corresponding to 3,5,5-trimethylcyclohexylamine (IPDA), 4,4'-methylenebis (cyclohexyl iso
- Cycloaliphatic diamines such as methyl) cyclohexane (H XDA), for example hexamethylenedi
- Aliphatic diamines such as hexamethylene diamine (HDA) corresponding to socyanate (HDI) and polymethylene polyphenyl corresponding to polymethylene polypolyisocyanate (crude MDI, polymeric MDI) It is appropriately selected from polyamines and the like.
- HDA hexamethylene diamine
- HDI socyanate
- CAde MDI polymethylene polypolyisocyanate
- This polyisocyanate continuous production apparatus 1 is particularly suitable for producing an aromatic diisocyanate from an aromatic diamine.
- the organic solvent is not particularly limited as long as it dissolves polyamine and polyisocyanate and is inactive to them, and for example, aromatic hydrocarbons such as toluene and xylene, such as black toluene, chloroform and the like.
- Aroma hydrocarbons such as toluene and xylene, such as black toluene, chloroform and the like.
- Halogenated hydrocarbons such as oral benzene and dichlorobenzene, for example, esters such as butyl acetate and amyl acetate, and ketones such as methyl isobutyl ketone and methyl ethyl ketone. Of these, dichlorobenzene is preferable.
- polyamine solution is 5 to 50 weight 0/0 of polyamine, more preferably, are prepared as a solution in an organic solvent from 5 to 30 weight 0/0.
- the carbonyl chloride is prepared in the carbonyl chloride storage tank as it is, or as a carbonyl chloride solution, and is supplied from the carbonyl chloride supply pipe 10 to the raw material mixing section 8 as it is in the salt carbonate or as chloride. Supplied as a carbonyl solution.
- the carbochloride is preferably supplied as a carbochloride itself or as a chlorosulfonyl chloride solution.
- a carbonyl chloride solution is obtained by dissolving carbonyl chloride (COC1) in an organic solvent. Have been prepared.
- the organic solvent the above-mentioned organic solvent, preferably the same organic solvent as the polyamine solution is used.
- the carbonyl chloride solution is prepared as a solution of an organic solvent containing 10% by weight or more of carbonyl chloride.
- the polyamine solution is supplied from the polyamine supply pipe 9 to the raw material mixing section 8 at a supply speed (linear speed in the cross section of the opening 12 of the polyamine supply pipe 9) 0.5 to: L0mZs, preferably a supply speed of 0.5
- the supply rate (linear velocity in the cross section of the opening 14 of the carbonyl chloride supply pipe 10) is supplied from the carbonyl chloride supply pipe 10 to the raw material mixing section 8 from 0.5 to 5 mZs. It is supplied at LOmZs, preferably at a supply rate of 0.5-5 mZs.
- reaction liquid supplied to the raw material mixing unit 8 is supplied at a supply rate (linear velocity of the reaction liquid in the circulation line 7 immediately before being supplied to the raw material mixing unit 8) 0.3 to 5 mZs, preferably the supply rate 0 Supplied at 5-3mZs. If each supply rate is set as described above, the yield of polyisocyanate can be improved.
- the polyamine solution and the carbochloride or solution thereof have a stoichiometric ratio of carbonyl chloride Z polyamine of 2Zl to 60Zl (molar ratio), preferably 2Zl to 20Zl (molar ratio). Supplied.
- the polyamine solution supplied from the polyamine supply pipe 9 flows in from the opening 12 and the salty carbon supplied from the carbonyl chloride supply pipe 10.
- the solution force is supplied from the opening 14 and supplied so as to contact in the presence of a circulating reaction solution. More specifically, the contact of the polyamine solution flowing in from the opening 12 of the polyamine supply pipe 9 with the reaction solution whose upstream force is also circulated is suppressed by the inner wall surface of the circulation line 7 on one side.
- the salt carbon or its solution force flows from the opening 14 of the carbonyl chloride supply pipe 10 toward the polyamine solution flowing from the opening 12 of the polyamine supply pipe 9, so that The contact with the reaction solution which is encased by the inflowing salt carbonyl or the solution and circulated upstream is suppressed.
- the supplied polyamine solution and the carbonyl chloride or the solution thereof are, as described above, the polyamine solution being a salted carbon or a solution thereof. It is in a coated liquid layer state.
- the supplied polyamine solution and carbonyl chloride or the solution thereof are conveyed to the high shear pump 3 together with the reaction solution as shown in FIG.
- the high shear pump 3 which can reduce the contact opportunity between the polyamine solution and the polyisocyanate in the reaction solution, reacts with the supplied polyamine solution and salt carbonate or the solution.
- the liquid is mixed by high shear by a high shear pump 3. Due to this shearing, the polyamine in the polyamine solution and the salt carbonate or carbonyl chloride in the solution come into contact with each other as fine droplets in the reaction solution, so that the carbamoyl which is hardly soluble in an organic solvent is contacted.
- a uniform slurry of kulide and polyamine hydrochloride is instantly produced, and the slurry is highly dispersed in the reaction solution in a uniform state. Therefore, in the circulation line 7 from the high shear pump 3 to the reactor 4, the reaction between the polyisocyanate in the reaction solution and the polyamine in the supplied polyamine solution can be suppressed. It is possible to improve the yield of polyisocyanate by reducing the production of urea as a by-product.
- the reaction liquid is conveyed to the reactor 4 in a state where the slurry is highly dispersed, in the reactor 4, the reaction between the polyamine hydrochloride and the salty carbon in the solution is performed. In addition, the produced carbamoyl chloride is gradually converted to polyisocyanate.
- the reaction temperature is, for example, 120 ° C or less, preferably 50 ° C to 100 ° C. Controlled.
- reaction solution reacted in the reactor 4 that is, the polyisocyanate produced by the reaction.
- reaction liquid containing organic solvent and organic solvent is circulated from the liquid feed pump 5 through the circulation line 7, and the remainder is transferred to the next process (reactor 4 force multistage continuous reaction) through the transport line 15. If it is a first-stage reactor, it is transferred to the second-stage reactor).
- the transfer line 15 is not particularly concerned.For example, if there is an overflow from the reactor 4 or liquid feed due to pressure, use the liquid feed pump 5 to take out part of the circulation line 7 to the next process. Transport.
- the circulated reaction liquid is conveyed to the cooler 6 by the liquid feed pump 5, and is cooled to, for example, 120 ° C or less, preferably 50 to: LOO ° C by the cooler 6, and then the raw material.
- the polyamine solution is again supplied from the polyamine supply pipe 9, and the carbonyl chloride or its solution is supplied from the carbonyl chloride supply pipe 10. Since the reaction liquid cooled by the cooler 6 flows into the raw material mixing unit 8, the production of urea bodies as by-products is further suppressed.
- the mixing means of the present invention force using the high shear pump 3
- the mixing means of the present invention is used.
- other shearing means capable of bringing the polyamine and the salt carbonate into contact with each other by shearing for example, a stirrer or a mixer can be used.
- the liquid feed pump 5 is not provided, and the high shear pump 3 can also serve as the liquid feed pump 5.
- the raw material mixing section 8 is arranged in the middle of the reactor 4 from the reactor 4 to the high shear pump 3 in the direction of flow of the reaction liquid, and from the high shear pump 3 to the reaction tank 4.
- a cooler 6 is arranged on the way.
- the polyisocyanate continuous production apparatus of the present invention can be suitably used for industrial production of a polyisocyanate used as a raw material for polyurethane.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Polyurethanes Or Polyureas (AREA)
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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KR1020077024810A KR101308830B1 (ko) | 2005-04-05 | 2006-03-30 | 폴리이소시아네이트 연속 제조 장치 |
EP06730581A EP1867632B1 (en) | 2005-04-05 | 2006-03-30 | Apparatus for continuously producing polyisocyanate |
CN2006800105083A CN101151242B (zh) | 2005-04-05 | 2006-03-30 | 多异氰酸酯连续制造装置 |
US11/887,583 US7767160B2 (en) | 2005-04-05 | 2006-03-30 | Apparatus for continuously producing polyisocyanate |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2005-108590 | 2005-04-05 | ||
JP2005108590A JP4739798B2 (ja) | 2005-04-05 | 2005-04-05 | ポリイソシアネート連続製造装置 |
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WO2006109576A1 true WO2006109576A1 (ja) | 2006-10-19 |
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PCT/JP2006/306633 WO2006109576A1 (ja) | 2005-04-05 | 2006-03-30 | ポリイソシアネート連続製造装置 |
Country Status (7)
Country | Link |
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US (1) | US7767160B2 (ja) |
EP (1) | EP1867632B1 (ja) |
JP (1) | JP4739798B2 (ja) |
KR (1) | KR101308830B1 (ja) |
CN (1) | CN101151242B (ja) |
TW (1) | TW200706525A (ja) |
WO (1) | WO2006109576A1 (ja) |
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US20090005606A1 (en) * | 2007-06-27 | 2009-01-01 | H R D Corporation | High shear process for the production of cumene hydroperoxide |
US7479576B1 (en) * | 2007-06-27 | 2009-01-20 | H R D Corporation | Method of hydrogenating aldehydes and ketones |
KR101641759B1 (ko) * | 2011-05-09 | 2016-07-21 | 미쓰이 가가쿠 가부시키가이샤 | 알데히드 화합물의 제조 방법 |
CN103191686A (zh) * | 2013-03-28 | 2013-07-10 | 黄彩平 | 一种循环反应装置 |
WO2017001322A1 (de) | 2015-06-29 | 2017-01-05 | Covestro Deutschland Ag | Verfahren zur herstellung von polyisocyanaten |
CN110327848B (zh) * | 2019-05-29 | 2022-02-18 | 江苏蓝丰生物化工股份有限公司 | 一种用于光气化反应的装置、光气化反应的生产工艺 |
CN112473597B (zh) * | 2020-11-06 | 2022-08-02 | 河南省中泰石化有限公司 | 一种粉末涂料用饱和聚酯树脂生产设备及其生产方法 |
JP2022137704A (ja) * | 2021-03-09 | 2022-09-22 | アシザワ・ファインテック株式会社 | 分散粉砕装置 |
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- 2006-03-30 KR KR1020077024810A patent/KR101308830B1/ko active IP Right Grant
- 2006-03-30 US US11/887,583 patent/US7767160B2/en active Active
- 2006-03-30 EP EP06730581A patent/EP1867632B1/en active Active
- 2006-03-30 CN CN2006800105083A patent/CN101151242B/zh active Active
- 2006-03-31 TW TW095111453A patent/TW200706525A/zh unknown
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Also Published As
Publication number | Publication date |
---|---|
CN101151242B (zh) | 2012-04-18 |
EP1867632A4 (en) | 2010-11-24 |
EP1867632B1 (en) | 2012-03-07 |
CN101151242A (zh) | 2008-03-26 |
JP2006282640A (ja) | 2006-10-19 |
US20090081086A1 (en) | 2009-03-26 |
US7767160B2 (en) | 2010-08-03 |
EP1867632A1 (en) | 2007-12-19 |
KR20070116927A (ko) | 2007-12-11 |
KR101308830B1 (ko) | 2013-09-13 |
TW200706525A (en) | 2007-02-16 |
JP4739798B2 (ja) | 2011-08-03 |
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