摘要:
The present invention is directed to compositions and methods for the recovery of olefins from a mixture. The compositions of the present invention comprise: (1) a transition metal ion; (2) a counter anion; (3) a ligand selected from the group consisting of a bidentate ligand and a tridentate ligand, wherein the ligand comprises at least two nitrogen atoms, and wherein each of the nitrogen atoms comprises a lone pair of electrons; and (4) a polar solvent with a boiling point of at least about 200° C. The methods of the present invention comprise: (1) providing the aforementioned compositions; (2) bonding at least a portion of the olefins in a mixture to the transition metal ion in the composition to form a complex; (3) separating the complex from the mixture; and (4) recovering the olefins from the complex.
摘要:
A process for the oxidation of a C2 to C4 alkane to produce the corresponding alkene and carboxylic acid which process comprises separation of the alkene from a mixture of the alkene, the alkane and oxygen by absorption in a metallic salt solution, and recovery of an alkene-rich stream from the metallic salt solution. Integrated processes for the production of alkyl carboxylate and alkenyl carboxylate, which processes comprise oxidation of a C2 to C4 alkane to produce the corresponding alkene and carboxylic acid, separation of the alkene from a mixture of the alkene, the alkane and oxygen by absorption in a metallic salt solution, and recovery of an alkene-rich stream from the metallic salt solution for use in production of alkyl carboxylate or alkenyl carboxylate.
摘要翻译:将C 2 O 3氧化成C 4烷烃以产生相应的烯烃和羧酸的方法,该方法包括从烯烃的混合物中分离烯烃, 烷烃和氧气通过在金属盐溶液中吸收,并从金属盐溶液中回收富烯烃流。 用于生产羧酸烷基酯和羧酸酯的综合方法,该方法包括将C 2 O 3氧化成C 4链烷烃以产生相应的烯烃和羧酸,分离 通过在金属盐溶液中吸收从烯烃,烷烃和氧气的混合物中获得烯烃,以及从用于生产羧酸烷基酯或链烯基羧酸酯的金属盐溶液中回收富含烯烃的物流。
摘要:
Complexing reagents are provided which comprise Cu(I) carboxylates or Cu(I) sulfonates and high molecular weight olefins. The invention complexing reagents are useful for separating olefins from mixtures of olefins and paraffins.
摘要:
Olefin complexing reagents comprising Cu(I) carboxylate/BF, adducts in aromatic solvents and a method of preparation therefor, and use of said reagents in the separation of olefins from paraffins are provided.
摘要:
An aromatic solution of the compound CuAl(CN)Cl.sub.3 alone or with additional solid CuAl(CN)Cl.sub.3 is used for the separation of some unsaturated compound (olefin, acetylene or carbon monoxide) from a feedstream.The feedstream is contacted with the solvent to form a complex of the ligand (olefin, acetylene or carbon monoxide). The feedstream is then separated from the solvent. The solvent is then treated with some combination of heat and lowered pressure to separate the ligand from the solvent. The ligand poor solvent is then recycled to contact fresh feedstream.
摘要:
A process for the separation and recovery of unsaturated aliphatic hydrocarbons from admixture with saturated aliphatic hydrocarbons which comprises contacting such a mixture with a complexing agent comprising cuprous salts of sulfonic acids and dialkyl phosphates under such conditions that the unsaturated hydrocarbons are preferentially complexed with the cuprous salts. In one embodiment, olefins are separated from paraffins by using a cuprous sulfonate dissolved in an aromatic solvent to form a complex with the olefin. The olefin can be separated from the resulting complex and the cuprous salt recycled for reuse.
摘要:
ANHYDROUS CUPROUS NITRATE/PROPIONITRILE SOLUTIONS HAVING HIGH CONCENTRATIONS OF CUPROUS ION, E.G., 15-26% BY WEIGHT CUPROUS ION, AND CORRESPONDINGLY LOW CONCENTRATIONS OF CUPRIC ION, E.G., 2-5% BY WEIGHT CUPRIC ION, AND THE PREPARATION THEREOF BY (1) CONTACTING QUANTITIES OF CUPRIC NITRATE AND METALLIC COPPER SUFFICIENT TO YIELD NO MORE THAN ABOUT 4% CUPROUS ION IN PROPIONITRILE SOLVENT AT ELEVATED TEMPERATURES TO PRODUCE A DILUTE PROPIONITRILE SOLVEN SOLUTION WHEREIN THE COPPER IS PRESENT SUBSTANTIALLY IN THE CUPROUS FORM AND (2) CONCENTRATING THE DILUTE/PROPIONITRILE SOLUTION. THE CONCENTRATED CUPROUS NITRATE/PROPIONITRILE SOLUTIONS, THUSLY PREPARED, ARE USEFUL IN AFFECTING THE SEPARATION OF OLEFINICALLY UNSATURATED HYDROCARBONS FROM HYDROCARBONS OF LESSER DEGREES OF UNSATURATION.
摘要:
A PROCESS IS DESCRIBED FOR SEPARATING AND RECOVERING COMPLEXIBLE LIQUIDS FROM FEEDSTREAMS CONTAINING THEM, COMPRISING THE STEPS OF COMPLEXING THE LIGANDS WITH A COMPLEXING SOLUTION, STRIPPING IMPURTIES OUT OF SOLUTION, DECOMPLEXING BY FLASHING AT PRESSURES OF FROM 1 ATMOSPHERE TO ABOUT 40 ATMOSPHERES, RECYCLING SOLVENT TO THE
COMPLEXER AND THEREAFTER RECOVERING SAID LIGANDS AS A HIGH PURITY PRODUCT. THE COMPLEXING SOLUTION COMPRISES GROUP I-B METAL SALTS DISSOLVED IN LOW VOLATILITY AROMATIC SOLVENTS. THE LIGANDS ARE DECOMPLEXED BY EITHER FLASHING OFF A HIGH PRESSURES OR BY MULTIPLE STAGE FLASHING.