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7619126 |
Method for obtaining crude 1,3-butadiene from a C4 fraction
A process for recovering crude 1,3-butadiene from a C 4 fraction by extractive distillation using a selective solvent in a dividing wall column (TK) in which a dividing wall (T) is arranged in the...
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7597784 |
Pressurized vapor cycle liquid distillation
Embodiments of the invention are directed toward a novel pressurized vapor cycle for distilling liquids. In some embodiments of the invention, a liquid purification system is revealed, including...
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7594979 |
Purification of propylene oxide resulting from epoxidation of propylene with hydrogen peroxide
A process of separating a purified propylene oxide from a crude epoxidation product produced, preferably, in an epoxidation reaction of propylene with hydrogen peroxide. The process involves...
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7588666 |
Compact rectifying unit for separation of mixed fluids and rectifying process for separation of such mixed fluids
The invention relates to a compact rectifying unit for separation of mixed fluids using for heat transfer purpose a fluid heat carrier and its vapours on one of the sides of heat and mass...
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7556716 |
Method for recording the boiling curve of liquids and device for carrying out the method
Described is a method for recording the boiling curve of liquids, in particular petroleum products and/or solvents, in which a sample amount of the liquid to be analyzed is evaporated and...
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7531065 |
Distillation apparatus
A fluid distillation apparatus includes at least one each of a fluid inlet port Through which the fluid to be distilled is transferred from a container containing the fluid to be distilled to...
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7501045 |
Method of producing and separating dinitrile compounds
The present invention relates to a process for the manufacture and separation of dinitrile compounds. It relates more particularly to a process for the manufacture and separation of dinitrile...
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7497931 |
Distillative preparation of IPDA having a high cis/trans isomer ratio
The invention relates to a process for recovering 3-aminomethyl-3,5,5-trim-ethylcyclohexylamine (isophoronediamine, IPDA) having a fractionally distilled cis/trans isomer ratio of at least 73/27....
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7468119 |
Separation of 6-aminocapronitrile and hexamethylenediamine from a mixture comprising hexamethylenediamine, 6-aminocapronitrile and tetrahydroazepine
The invention relates to the field of separation by distillation of 6-aminocapronitrile (ACN) and hexamethylenediamine (HMD) from a mixture containing ACN, HMD, tetrahydrozaepine (THA),...
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7465376 |
Method and device for treating liquids
The invention provides for the removal of impurities from treatment fluid including a base liquid and a variety of impurities contained in the base liquid by conveying the treatment fluid to at...
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7431804 |
Method for carrying out the distillation or reactive distillation of a mixture containing at least one toxic constituent
A process is proposed for the distillation or reactive distillation of a mixture that includes at least one toxic component, the process being carried out in a column containing a structured...
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7393436 |
Thermal separating process for removing at least one stream containing enriched (meth) acrylic monomers
A thermal separating process for removing a stream containing enriched (meth)acrylic monomers from a mixture containing (meth)acrylic monomers, in which the liquid phases retained in the separating...
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7390380 |
Processing of shipboard wastewater
Incoming wastewater is preheated in a heat exchanger before delivery to a flash chamber through an orifice for flashing into water vapor rising into an upper section of the flash chamber which also...
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7368040 |
Apparatus for and method of heating fluid and distilling fluid
A method and an apparatus for heating fluid with a gas heater and distilling fluid with the pilot light of the gas heater are disclosed. The apparatus for heating fluid and distilling fluid...
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7368039 |
Distiller employing cyclical evaporation-surface wetting
A distillation unit ( 10 ) employs a rotary heat exchanger ( 32 ) forming a multiplicity of evaporation chambers ( 56 ) into which a liquid to be purified is sprayed for evaporation. Spray arms (...
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7347918 |
Energy efficient evaporation system
An evaporation system uses the weight of condensed liquid as an energy source. An inlet feed is introduced into an enclosure through an inlet. The inlet feed is vaporized in an evaporation region...
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7329330 |
Method and device for the distillative processing of 1,6-hexanediol, 1,5-pentanediol and caprolactone
A process for working up by distillation the crude products obtained in the process according to DE-A 196 07 954 and containing 1,6-hexanediol (HDO), 1,5-pentanediol (PDO) or caprolactone (CLO) in...
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7326323 |
High capacity purification of thermally unstable compounds
Separations processes and apparati capable of purifying thermally sensitive materials at high capacity. An apparatus having a rectification section and a stripping section with the stripping...
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7300555 |
Method for the rectifying separation of liquids containing (meth)acrylic monomers in a rectification column
A process for rectificatively separating liquids containing (meth)acrylic monomers in a rectification column is provided, in which a stream is withdrawn from the rectification column and recycled...
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7279075 |
Thermal separating process between at least one gaseous and at least one liquid stream, of which at least one comprises (meth)acrylic monomers
In a thermal separating process between at least one gaseous and at least one liquid stream, of which at least one comprises (meth)acrylic monomers, in a separating column containing sieve trays as...
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7276139 |
Method for concentrating solution
An low concentration dope is fed through a nozzle into a concentrating apparatus, and flash evaporation of the low concentration dope is performed at an end of the nozzle. The low concentration...
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7264696 |
Dividing-wall column with feed in whole or in part in the vaporous state and/or side stream take off in whole or in part in the vaporous state
A dividing-wall column having a dividing wall which is essentially disposed along the long direction of the column is proposed, which divides the column interior into a feed part, a take off part,...
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7258766 |
Method for collecting acrylic acid
A method for collecting acrylic acid is provided, which includes the step of collecting acrylic acid using an aqueous medium from a reaction gas containing acrylic acid obtained by catalytic...
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7255777 |
Distillation system
Improved HETP is obtained in the operation of a distillation column containing trays with a packing of a porous container containing a particulate material intimately associated with a resilient...
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7217343 |
Point of use water purification method and apparatus
A compact, energy efficient, continuous-flow point of use distillation system utilizes stacked, vertically-arranged components to provide a compact and energy efficient distillation process and a...
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7208570 |
Method of refining tall oil
The present invention relates to a method of refining crude tall oil. According to the method, the crude tall oil is fed into a column distiller, where it is separated into desired fractions. The...
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7169267 |
Method and device for carrying out the distillative separation of C5+ cuts
A process is proposed for the separation of C 5+ cuts by distillation into a low-boiler (A), a medium-boiler (B) and a high-boiler fraction (C) in one or more dividing-wall columns (TK), in which...
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7153396 |
Rotating evaporator with process-dependent rotating speed regulation
In a rotary evaporator, the rotating speed of the rotating flask is automatically controlled or regulated dependent upon a detected process value, particularly the vibration behavior or the mass...
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7132038 |
Method and device for obtaining 1,3 pure butadiene from 1,3 raw butadiene by distillation
A process for obtaining pure 1,3-butadiene from crude 1,3-butadiene by distillation is carried out in a dividing wall column in which a dividing wall is located in the longitudinal direction of the...
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7128813 |
Process for manufacturing high purity methacrylic acid
A process for the high yield production of high purity glacial methacrylic acid (“HPMAA”) with minimization of decomposition of hydroxy isobutyric acid (HIBA). The HPMAA is substantially pure,...
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7107194 |
High fidelity low-order modeling for multi-staged separation processes based upon the compartmental approach
A new way of applying the compartmental approach to the simulation of multi-stage separation processes in the process industry leads to more robust simulation models and higher success rate. The...
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7048833 |
Method and apparatus for treating oxygenate-containing feeds and their use in conversion of oxygenates to olefins
A feed vaporization process and apparatus for oxygenate to olefin conversion is provided which uses a vapor-liquid disengaging drum to separate non-volatiles and/or partial non-volatiles from...
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7029556 |
Method for purifying (meth)acrylic monomers by distillation
The invention concerns a method of purifying a (meth) acrylic monomer selected among (meth) acrylic acids and their esters, by distillation in the presence of at least a polymerisation inhibitor...
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7001490 |
Purification of ammonia by distillation
Crude ammonia is separated into a low boiler fraction, a high boiler fraction and an intermediate-boiling pure fraction by continuous fractional distillation in a distillation apparatus configured...
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6984292 |
Water treatment process for thermal heavy oil recovery
There is disclosed a method and apparatus for treating produced water from a heavy oil thermal recovery unit to achieve water recovery and recycle levels of greater than 80% and as high as 100% to...
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6936140 |
Water distillation system
A distillation system is provided for recovering water from sea water and other polluted water source. The system has a heat engine embodying Carnot cycle and a Rankine cycle formed by heat...
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6926809 |
Device and process for the purification of cyanuric chloride
The present invention relates to a device and method for the production of cyanuric chloride. The device has three units for the production, purification and isolation of cyanuric chloride, the...
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6849155 |
Concentrator
This invention provides a concentrator capable of drawing out a concentrate of a constant concentration. The concentrator includes a heater having a heating medium that has been heated to a...
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6846389 |
Method for distillative separation of mixtures containing tetrahydrofuran, γ-butyrolactone and/or 1,4-butanediol
In a process for the continuous fractional distillation of mixtures comprising tetrahydrofuran, γ-butyrolactone and/or 1,4-butanediol to give at least three fractions, the fractionation is carried...
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6805774 |
Apparatus and process for purifying a liquid by thermoelectric peltier means
A continuous process and apparatus is provided for treating an impure liquid to produce purified liquid. The process includes electrically activating a thermoelectric module ( 24 ) to provide a...
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6758945 |
Method and apparatus for quenching the coke drum vapor line in a coker
A method and apparatus for quenching the coke drum vapor line from a coke drum to the main fractionator in a coker unit whereby the volume of quench liquid prevents the drum vapor line from...
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6685802 |
Process and apparatus for removing dissolved and undissolved solids from liquids
This invention relates to a continuous process and an apparatus ( 1 ) for removing dissolved and undissolved solids and/or high boiling point liquid contaminants from a mixture of miscible liquids...
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6682633 |
Apparatus for cocurrent fractional distillation
A modular apparatus for fractional distillation and other forms of vapor-liquid contacting is presented. The apparatus performs cocurrent contacting of vapor and liquid in a number of identical...
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6666956 |
Method for distilling polymerizable compound or liquid containing polymerizable compound
In distillation of a polymerizable compound such as (meth)acrylic acid or a liquid containing such a polymerizable compound with use of a distillation column equipped with a reboiler, (a) a...
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6635149 |
Water purification system
A water purification system and method for residential or commercial application having a first support structure coupled to a water supply having a first heat source of sufficient magnitude to...
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6632329 |
Distillation apparatus and distilling method
A distillation apparatus is provided with a distillation tower, a reboiler, a bottom outflow pipe for drawing a liquid from the bottom of the distillation tower, and a pot provided between the...
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6605190 |
Staged optimal externally-controlled systems and method thereof
The method and system of the present invention is designed to minimize exergy consumption consistent with a given level of product purity. For example, in a distillation system, the design employs...
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6582563 |
Water purification system
An improved portable water purification system with reduced leaks and the capability of automatic draining of its boiling tank, as well as to a method of preventing water spillage from a portable...
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6558515 |
Dividing wall fractionation column control system and apparatus
A control method and apparatus for regulating the rate of vapor flow in the two adjacent sections of a dividing wall fractional distillation column are presented. The liquid level on a tray at the...
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6551466 |
Multiple effect distillation process with reduced fouling
A method and apparatus for removing a contaminant from a fluid feed stream containing the contaminant. The method includes the steps of providing a feed stream and heating it in a first step to at...
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