EP1937628A1 - Procede de fabrication d'hexamethylene diamine et d'aminocapronitrile - Google Patents
Procede de fabrication d'hexamethylene diamine et d'aminocapronitrileInfo
- Publication number
- EP1937628A1 EP1937628A1 EP06820217A EP06820217A EP1937628A1 EP 1937628 A1 EP1937628 A1 EP 1937628A1 EP 06820217 A EP06820217 A EP 06820217A EP 06820217 A EP06820217 A EP 06820217A EP 1937628 A1 EP1937628 A1 EP 1937628A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fraction
- acid
- hexamethylenediamine
- distillation
- hydrogenate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- NAQMVNRVTILPCV-UHFFFAOYSA-N hexane-1,6-diamine Chemical compound NCCCCCCN NAQMVNRVTILPCV-UHFFFAOYSA-N 0.000 title claims abstract description 100
- 238000000034 method Methods 0.000 title claims abstract description 30
- FHKPTEOFUHYQFY-UHFFFAOYSA-N 2-aminohexanenitrile Chemical compound CCCCC(N)C#N FHKPTEOFUHYQFY-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 238000004821 distillation Methods 0.000 claims abstract description 34
- 239000002253 acid Substances 0.000 claims abstract description 30
- BTGRAWJCKBQKAO-UHFFFAOYSA-N adiponitrile Chemical compound N#CCCCCC#N BTGRAWJCKBQKAO-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- 239000003513 alkali Substances 0.000 claims abstract description 10
- 150000003863 ammonium salts Chemical class 0.000 claims abstract description 3
- 239000002585 base Substances 0.000 claims description 17
- 210000003918 fraction a Anatomy 0.000 claims description 13
- 150000001875 compounds Chemical class 0.000 claims description 12
- 150000008043 acidic salts Chemical class 0.000 claims description 10
- 238000009835 boiling Methods 0.000 claims description 8
- 150000003839 salts Chemical class 0.000 claims description 8
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 7
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 7
- 238000005984 hydrogenation reaction Methods 0.000 claims description 7
- 210000002196 fr. b Anatomy 0.000 claims description 6
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 5
- 150000007513 acids Chemical class 0.000 claims description 5
- 150000001450 anions Chemical class 0.000 claims description 5
- 150000001768 cations Chemical class 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 4
- 125000001931 aliphatic group Chemical group 0.000 claims description 4
- -1 cycloaliphatic Chemical group 0.000 claims description 4
- 125000003118 aryl group Chemical group 0.000 claims description 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 2
- 210000000540 fraction c Anatomy 0.000 claims description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 2
- 239000011707 mineral Substances 0.000 claims description 2
- 238000011084 recovery Methods 0.000 claims description 2
- ISIJQEHRDSCQIU-UHFFFAOYSA-N tert-butyl 2,7-diazaspiro[4.5]decane-7-carboxylate Chemical compound C1N(C(=O)OC(C)(C)C)CCCC11CNCC1 ISIJQEHRDSCQIU-UHFFFAOYSA-N 0.000 claims description 2
- 229910001854 alkali hydroxide Inorganic materials 0.000 claims 1
- 150000008044 alkali metal hydroxides Chemical class 0.000 claims 1
- 150000001735 carboxylic acids Chemical class 0.000 claims 1
- 150000001447 alkali salts Chemical class 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 description 5
- 150000002500 ions Chemical class 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 229920002302 Nylon 6,6 Polymers 0.000 description 3
- 239000004952 Polyamide Substances 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000006227 byproduct Substances 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 229920002647 polyamide Polymers 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- XJMMNTGIMDZPMU-UHFFFAOYSA-N 3-methylglutaric acid Chemical compound OC(=O)CC(C)CC(O)=O XJMMNTGIMDZPMU-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- AFVFQIVMOAPDHO-UHFFFAOYSA-N Methanesulfonic acid Chemical compound CS(O)(=O)=O AFVFQIVMOAPDHO-UHFFFAOYSA-N 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 150000007524 organic acids Chemical class 0.000 description 2
- 229940072033 potash Drugs 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 235000015320 potassium carbonate Nutrition 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- NQPDZGIKBAWPEJ-UHFFFAOYSA-N valeric acid Chemical compound CCCCC(O)=O NQPDZGIKBAWPEJ-UHFFFAOYSA-N 0.000 description 2
- RTBFRGCFXZNCOE-UHFFFAOYSA-N 1-methylsulfonylpiperidin-4-one Chemical compound CS(=O)(=O)N1CCC(=O)CC1 RTBFRGCFXZNCOE-UHFFFAOYSA-N 0.000 description 1
- SCEIUGQQBYRBPP-UHFFFAOYSA-N 2,3,4,5-tetrahydro-1h-azepine Chemical compound C1CCC=CNC1 SCEIUGQQBYRBPP-UHFFFAOYSA-N 0.000 description 1
- SRGQQZYVZFJYHJ-UHFFFAOYSA-N 2-(aminomethyl)cyclopentan-1-amine Chemical compound NCC1CCCC1N SRGQQZYVZFJYHJ-UHFFFAOYSA-N 0.000 description 1
- RVHOBHMAPRVOLO-UHFFFAOYSA-N 2-ethylbutanedioic acid Chemical compound CCC(C(O)=O)CC(O)=O RVHOBHMAPRVOLO-UHFFFAOYSA-N 0.000 description 1
- WWZKQHOCKIZLMA-UHFFFAOYSA-N Caprylic acid Natural products CCCCCCCC(O)=O WWZKQHOCKIZLMA-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical class C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical class [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- BIGPRXCJEDHCLP-UHFFFAOYSA-N ammonium bisulfate Chemical compound [NH4+].OS([O-])(=O)=O BIGPRXCJEDHCLP-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- JFCQEDHGNNZCLN-UHFFFAOYSA-N anhydrous glutaric acid Natural products OC(=O)CCCC(O)=O JFCQEDHGNNZCLN-UHFFFAOYSA-N 0.000 description 1
- GONOPSZTUGRENK-UHFFFAOYSA-N benzyl(trichloro)silane Chemical compound Cl[Si](Cl)(Cl)CC1=CC=CC=C1 GONOPSZTUGRENK-UHFFFAOYSA-N 0.000 description 1
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000001944 continuous distillation Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- BTZNPZMHENLISZ-UHFFFAOYSA-N fluoromethanesulfonic acid Chemical compound OS(=O)(=O)CF BTZNPZMHENLISZ-UHFFFAOYSA-N 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229940098779 methanesulfonic acid Drugs 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N n-hexanoic acid Natural products CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000011591 potassium Chemical class 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- CHKVPAROMQMJNQ-UHFFFAOYSA-M potassium bisulfate Chemical compound [K+].OS([O-])(=O)=O CHKVPAROMQMJNQ-UHFFFAOYSA-M 0.000 description 1
- 239000001120 potassium sulphate Substances 0.000 description 1
- 235000019260 propionic acid Nutrition 0.000 description 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000001612 separation test Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- WBHQBSYUUJJSRZ-UHFFFAOYSA-M sodium bisulfate Chemical compound [Na+].OS([O-])(=O)=O WBHQBSYUUJJSRZ-UHFFFAOYSA-M 0.000 description 1
- 229910000342 sodium bisulfate Inorganic materials 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 1
- 229940005605 valeric acid Drugs 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C253/00—Preparation of carboxylic acid nitriles
- C07C253/32—Separation; Purification; Stabilisation; Use of additives
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C209/00—Preparation of compounds containing amino groups bound to a carbon skeleton
- C07C209/44—Preparation of compounds containing amino groups bound to a carbon skeleton by reduction of carboxylic acids or esters thereof in presence of ammonia or amines, or by reduction of nitriles, carboxylic acid amides, imines or imino-ethers
- C07C209/48—Preparation of compounds containing amino groups bound to a carbon skeleton by reduction of carboxylic acids or esters thereof in presence of ammonia or amines, or by reduction of nitriles, carboxylic acid amides, imines or imino-ethers by reduction of nitriles
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C209/00—Preparation of compounds containing amino groups bound to a carbon skeleton
- C07C209/82—Purification; Separation; Stabilisation; Use of additives
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C209/00—Preparation of compounds containing amino groups bound to a carbon skeleton
- C07C209/82—Purification; Separation; Stabilisation; Use of additives
- C07C209/86—Separation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C253/00—Preparation of carboxylic acid nitriles
- C07C253/30—Preparation of carboxylic acid nitriles by reactions not involving the formation of cyano groups
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C255/00—Carboxylic acid nitriles
- C07C255/01—Carboxylic acid nitriles having cyano groups bound to acyclic carbon atoms
- C07C255/24—Carboxylic acid nitriles having cyano groups bound to acyclic carbon atoms containing cyano groups and singly-bound nitrogen atoms, not being further bound to other hetero atoms, bound to the same saturated acyclic carbon skeleton
Definitions
- the invention relates to a process for the joint production of hexamethylenediamine and aminocapronitrile.
- It relates more particularly to a process for the simultaneous manufacture of hexamethylenediamine and aminocapronitrile by hemihydrogenation of adiponitrile.
- Hexamethylenediamine and aminocapronitrile are important compounds used especially as monomers or intermediate products in the manufacture of polymers, in particular the manufacture of polyamides.
- Hexamethylenediamine, used in particular for the synthesis of polyamide 6,6 or polyhexamethylene adipamide is generally obtained by complete hydrogenation of the adiponitrile and purification by distillation.
- hexamethylenediamine and aminocapronitrile can be obtained together by controlling the degree of advancement of the hydrogenation of adiponitrile.
- This incomplete hydrogenation step also called hemihydrogenation, may be carried out under a wide variety of conditions.
- EP741873, EP927157, EP1058677, EP876341 describe a hemihydrogenation process implemented in the presence in particular of ammonia and a solvent such as an alcohol.
- EP 1397346 discloses the implementation of a method of hemihydrogenation in the presence of water, a hydrogenation catalyst and a strong base.
- THA tetrahydroazepine
- One of the aims of the present invention is to propose a method for recovering and producing, from the hemihydrogenation medium of adiponitrile, hereinafter referred to as hydrogenate, a crude hexamethylenediamine having a lowest possible concentration of THA for allow the implementation of a purification producing a hexamethylenediamine according to specifications.
- the invention relates to a process for the simultaneous manufacture of hexamethylenediamine and aminocapronitrile by hemihydrogenation of adiponitrile.
- This process comprises a step of separating the hexamethylenediamine from the hydrogenate by distillation of hexamethylenediamine.
- the distillation of hexamethylenediamine is carried out from the hydrogenate containing a free acid and / or an acidic salt of alkali or ammonium.
- the top fraction A recovered at the top of the column of the distillation step of hexamethylenediamine essentially contains crude hexamethylenediamine with a small amount of THA.
- the amount of THA present in crude hexamethylene diamine represents a small proportion of the THA contained in the hydrogenate.
- the presence of H + ions in the hydrogenate makes it possible to limit the amount of THA distilled with hexamethylenediamine, in particular by favoring the formation of "heavy" compounds and thus of maintaining a large part of the THA present in the hydrogenate in the bottom fraction B of said column.
- the amount of acid and / or acidic salt of alkali or ammonium added or present in the hydrogenate is a function of the hemihydrogenation medium.
- the amount of acid added must allow one hand to neutralize the strong base and on the other hand to obtain a concentration of H + ions sufficient to limit the amount of THA distilling with hexamethylenediamine.
- the amount of acid and / or acid addition salt is determined to obtain sufficient H + ion concentration to obtain a small portion of the THA distill with hexamethylene diamine. This concentration will be sufficient if the ratio T defined below is greater than 1.
- the ratio T is determined by the following formula I:
- [A] represents the molar concentration of anion corresponding to the acid or acid salt
- [M] represents the molar concentration of cation corresponding to the present base and the acidic salt
- n a represents the number of charges of the anion A
- n b represents the number of charges of the cation M.
- the ratio T is preferably between 1.01 and 5, advantageously between 1.2 and 3.
- This ratio T can be determined by calculating the amount of acid added in the hydrogenate as a function of the amount of soluble base. in hydrogenate. It is also possible to determine this ratio by determination of the concentration of cation M and that of the anion A associated with the acid added by analysis in particular, by the usual spectrometry methods.
- the acidic alkali salt is preferentially formed in situ by reaction of the acid with the base present in the hydrogenate.
- the suitable acids are, for example, mineral acids such as sulfuric acid, phosphoric acid, phosphorous acid, hydrochloric acid, or organic acid such as, for example, aliphatic, cycloaliphatic, aromatic carboxylic acids. mono or polyfunctional or aliphatic, cycloaliphatic or aromatic sulphonic acids.
- organic acids mention may be made of acetic acid, propionic acid, valeric acid, hexanoic acid, adipic acid, terephthalic acid and glutaric acid.
- succinic acid methylglutaric acid, ethylsuccinic acid, para-toluenesulfonic acid, methanesulfonic acid, fluoromethanesulfonic acid. It is also possible to use acid resins, in particular resins containing sulphonic groups.
- Acidic salts of alkali or ammonium suitable for the invention include acid salts of sodium, potassium or ammonium acids mentioned above.
- sodium hydrogen sulfate, potassium hydrogen sulphate and ammonium hydrogen sulphate may be mentioned.
- sulfuric acid and alkali hydrogensulfates are preferred.
- the head fraction A recovered by distillation of hexamethylenediamine from the hydrogenate is subjected to a further distillation optionally in the presence of a strong base at a concentration described below. allowing the recovery as a top fraction C. compounds having a boiling point lower than that of hexamethylenediamine such as 1,2-diaminocylohexane (DCH) and 2-aminomethylcyclopentylamine (AMCPA).
- the bottom fraction Al is essentially hexamethylenediamine.
- this bottoms fraction Ai is subjected to a new distillation in the presence, optionally, of a strong base such as potash or sodium hydroxide.
- the amount of strong base added in the bottom fraction A] or the top fraction A is determined to obtain a concentration of between 0.01 g / kg of fraction A 1 or A and 1 g / kg of fraction A 1 or A
- the top fraction A 2 is constituted by hexamethylenediamine to a high degree of purity meeting the required specifications especially for use in the manufacture of polymers such as polyamides.
- the C 1 bottoms fraction contains hexamethylenediamine and heavy compounds including HAT derivatives.
- This tail fraction Ci may advantageously be recycled to the hemihydrogenation stage, either in the hemihydrogenation reactor, or at the stage of conditioning the catalyst when it exists.
- the method of the invention thus makes it possible to recover from the hemihydrogenation medium of adiponitrile, hexamethylenediamine at a high degree of purity, in particular with a very low THA content.
- the various distillations described above are carried out in conventional distillation devices such as tray columns, filling columns and the like.
- the temperature and operating pressure conditions of these columns are set by application of the rules and simulation models conventionally used by those skilled in the art.
- the distillations are preferably conducted at a pressure below atmospheric pressure, preferably below 300 mbar, preferably at a pressure of between 10 and 100 mbar.
- the number of trays of each column is also determined according to the degree of separation desired and by application of the rules and models used in the field of distillation. Generally, the columns used have a number of theoretical plates between 10 and
- the bottoms fraction B obtained by distillation of hexamethylenediamine is subjected to a new distillation to recover a Bi head fraction consisting essentially of aminocapronitrile and a D-bottom fraction consisting essentially of adiponitrile and higher boiling compounds including THA derivatives.
- This tail fraction D is subjected to a new distillation to recover in the form of a top fraction D1 adiponitrile and in the form of tail fraction E compounds of high boiling point and the inorganic salts formed by reaction between the acid and the base.
- the top fraction D1 is recycled to the hemihydrogenation step, while the tail fraction E forms an effluent to be removed.
- distillation of hexamethylenediamine these distillations are carried out in distillation columns usually used for the separation of organic compounds of different boiling points.
- the operating and sizing parameters are determined using the rules and models made available to those skilled in the art.
- the operating pressure of the columns is advantageously less than 300 mbar.
- the temperature of the various bottom of the column is advantageously less than or equal to 185 ° C., preferably less than or equal to 180 ° C. vs.
- the method for the simultaneous manufacture of hexamethylenediamine and aminocapronitrile of the invention makes it possible to recover in a simple and economical manner a hexamethylenediamine with a high degree of purity, in particular by distilling it under conditions favoring the maintenance of the THA in the tail fraction B, ie in the fraction containing aminocapronitrile.
- the process of the invention makes it possible to eliminate the heavy products at the distillation stage of the AdN only.
- the hydrogenate has the following weight composition
- the THA concentration in the hydrogenate is 1,100 ppm.
- the hydrogenate is subjected to distillation in an adiabatic distillation column containing 20 physical plates corresponding to 7 theoretical plates.
- the distillation column operates under a pressure of 20 mbar with a top temperature of 125 ° C. and a bottom temperature of 170 ° C. the reflux ratio is equal to 2.
- Head fraction A was analyzed to determine the percentage of total THA present in the hydrogenate before distillation which distilled with hexamethylenediamine. The aminocapronitrile content in the top fraction was also determined
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Polyamides (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0510588A FR2892118B1 (fr) | 2005-10-18 | 2005-10-18 | Procede de fabrication d'hexamethylene diamine et d'aminocapronitrile. |
| PCT/FR2006/002320 WO2007045750A1 (fr) | 2005-10-18 | 2006-10-16 | Procede de fabrication d'hexamethylene diamine et d'aminocapronitrile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1937628A1 true EP1937628A1 (fr) | 2008-07-02 |
Family
ID=36676513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06820217A Withdrawn EP1937628A1 (fr) | 2005-10-18 | 2006-10-16 | Procede de fabrication d'hexamethylene diamine et d'aminocapronitrile |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US7973192B2 (fr) |
| EP (1) | EP1937628A1 (fr) |
| JP (1) | JP5000659B2 (fr) |
| KR (2) | KR20110022731A (fr) |
| CN (1) | CN101309897B (fr) |
| FR (1) | FR2892118B1 (fr) |
| RU (1) | RU2443676C2 (fr) |
| TW (1) | TW200728259A (fr) |
| UA (1) | UA89271C2 (fr) |
| WO (1) | WO2007045750A1 (fr) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2922207B1 (fr) * | 2007-10-11 | 2009-12-04 | Rhodia Operations | Procede de purification d'hexamethylene diamine |
| FR2944791B1 (fr) | 2009-04-27 | 2012-02-10 | Rhodia Operations | Procede de preparation de lactames. |
| KR101147347B1 (ko) * | 2010-05-26 | 2012-05-23 | 한국기술교육대학교 산학협력단 | 저압배전선로에 연계된 신에너지(태양광) 전원의 양방향 보호협조 시험장치 |
| CN103804236B (zh) * | 2012-11-13 | 2016-06-22 | 中国科学院过程工程研究所 | 一种加压热解制备异氰酸酯的设备及方法 |
| CN104276954A (zh) * | 2013-07-10 | 2015-01-14 | 罗地亚经营管理公司 | C10-c12二胺的纯化 |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2728259B1 (fr) | 1994-12-14 | 1997-03-14 | Rhone Poulenc Chimie | Procede d'hemihydrogenation de dinitriles en aminonitriles |
| DE19500222A1 (de) | 1995-01-05 | 1996-07-11 | Basf Ag | Verfahren zur gleichzeitigen Herstellung von Caprolactam und Hexamethylendiamin |
| US5717090A (en) * | 1995-01-05 | 1998-02-10 | Basf Aktiengesellschaft | Simultaneous preparation of caprolactam and hexamethylenediamine |
| DE19548289A1 (de) | 1995-12-22 | 1997-06-26 | Basf Ag | Verfahren zur gleichzeitigen Herstellung von Caprolactam und Hexamethylendiamin |
| DE19636766A1 (de) | 1996-09-10 | 1998-03-12 | Basf Ag | Verfahren zur gleichzeitigen Herstellung von 6-Aminocapronitril und Hexamethylendiamin |
| FR2771091B1 (fr) | 1997-11-20 | 2000-01-14 | Rhone Poulenc Fibres | Procede d'hydrogenation de dinitriles |
| DE19809686A1 (de) | 1998-03-06 | 1999-09-09 | Basf Ag | Verfahren zur Hydrierung von aliphatischen alpha, omega-Dinitrilen |
| FR2778661B1 (fr) * | 1998-05-15 | 2000-06-16 | Rhone Poulenc Fibres | Procede de preparation d'aminonitrile et de diamine |
| DE19839346A1 (de) * | 1998-08-28 | 2000-03-02 | Basf Ag | Verbessertes Verfahren zur Herstellung von Hexamethylendiamin |
| FR2785608B1 (fr) | 1998-11-05 | 2000-12-29 | Rhone Poulenc Fibres | Procede d'hemihydrogenation de dinitriles |
| FR2791672B1 (fr) | 1999-03-30 | 2001-05-04 | Rhone Poulenc Fibres | Procede d'hemihydrogenation de dinitriles en aminonitriles |
| DE19947508A1 (de) | 1999-10-01 | 2001-04-05 | Basf Ag | Verfahren zur Aktivierung von passiviertem Eisen |
| FR2806081B1 (fr) | 2000-03-08 | 2003-03-14 | Rhodia Polyamide Intermediates | Procede d'hydrogenation de fonctions nitriles en fonctions amines |
| FR2826364B1 (fr) | 2001-06-22 | 2005-01-14 | Rhodia Polyamide Intermediates | Procede d'hemihydrogenation de dinitriles en aminonitriles |
| FR2826363B1 (fr) | 2001-06-22 | 2005-01-14 | Rhodia Polyamide Intermediates | Procede d'hemihydrogenation de dinitriles en aminonitriles |
| FR2834984B1 (fr) * | 2002-01-21 | 2005-08-19 | Rhodia Polyamide Intermediates | Procede continu d'hydrogenation de nitriles ou composes nitres en amines |
-
2005
- 2005-10-18 FR FR0510588A patent/FR2892118B1/fr not_active Expired - Fee Related
-
2006
- 2006-10-16 KR KR1020117003039A patent/KR20110022731A/ko not_active Withdrawn
- 2006-10-16 EP EP06820217A patent/EP1937628A1/fr not_active Withdrawn
- 2006-10-16 JP JP2008536077A patent/JP5000659B2/ja not_active Expired - Fee Related
- 2006-10-16 UA UAA200805060A patent/UA89271C2/ru unknown
- 2006-10-16 RU RU2008119433/04A patent/RU2443676C2/ru not_active IP Right Cessation
- 2006-10-16 KR KR1020087009068A patent/KR101144690B1/ko not_active Expired - Fee Related
- 2006-10-16 US US12/090,125 patent/US7973192B2/en not_active Expired - Fee Related
- 2006-10-16 WO PCT/FR2006/002320 patent/WO2007045750A1/fr not_active Ceased
- 2006-10-16 CN CN2006800389850A patent/CN101309897B/zh not_active Expired - Fee Related
- 2006-10-17 TW TW095138290A patent/TW200728259A/zh unknown
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2007045750A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5000659B2 (ja) | 2012-08-15 |
| CN101309897B (zh) | 2012-06-27 |
| TW200728259A (en) | 2007-08-01 |
| CN101309897A (zh) | 2008-11-19 |
| KR101144690B1 (ko) | 2012-05-25 |
| FR2892118B1 (fr) | 2010-12-10 |
| WO2007045750A1 (fr) | 2007-04-26 |
| RU2443676C2 (ru) | 2012-02-27 |
| FR2892118A1 (fr) | 2007-04-20 |
| JP2009511622A (ja) | 2009-03-19 |
| KR20110022731A (ko) | 2011-03-07 |
| US20080319220A1 (en) | 2008-12-25 |
| UA89271C2 (ru) | 2010-01-11 |
| KR20080083108A (ko) | 2008-09-16 |
| RU2008119433A (ru) | 2009-11-27 |
| US7973192B2 (en) | 2011-07-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2029513A1 (fr) | Procede de transformation de composes nitriles en acides carboxyliques et esters correspondants | |
| WO2005019160A1 (fr) | Procede de fabrication et de separation de composes dinitriles | |
| RU2430912C2 (ru) | Способ получения первичных диаминов | |
| EP1937628A1 (fr) | Procede de fabrication d'hexamethylene diamine et d'aminocapronitrile | |
| CN1758942B (zh) | 从包含己二胺、6-氨基己腈和四氢氮杂的混合物中分离己二胺的蒸馏方法 | |
| FR2809395A1 (fr) | Procede de purification de lactames | |
| EP2581364B1 (fr) | Séparation de 6-aminocapronitrile et d'hexaméthylènediamine d'un mélange comprenant de l'hexaméthylènediamine, du 6-aminocapronitrile et de la tétrahydroazepine | |
| EP2377846B1 (fr) | Séparation de 6-aminocapronitrile et d'hexaméthylènediamine d'un mélange comprenant de l'hexaméthylènediamine, du 6-aminocapronitrile et de la tétrahydroazepine | |
| KR20200128087A (ko) | 헥사메틸렌디아민의 정제 방법 | |
| CN1155556C (zh) | 制备甲基丙烯酸甲酯的方法 | |
| JPH0662482B2 (ja) | 1,1’―パーオキシジシクロヘキシルアミンの熱分解反応混合液からシクロヘキサノンを回収する方法 | |
| CA2505359A1 (fr) | Procede de nettoyage de caprolactame | |
| JP5344808B2 (ja) | 環状オレフィンの製造方法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 20080328 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: RHODIA OPERATIONS |
|
| 17Q | First examination report despatched |
Effective date: 20100119 |
|
| DAX | Request for extension of the european patent (deleted) | ||
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| INTG | Intention to grant announced |
Effective date: 20151105 |
|
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| INTG | Intention to grant announced |
Effective date: 20160322 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20160802 |