533results about "Steam distillation" patented technology

An improved process for separation of liquid mixtures involves vapor stripping followed by mechanical compression of the vapor which is then exposed to a permeation membrane for separation of the compressed vapor.

A method and apparatus for treating for disposal oil contaminated substrates, such as drill cuttings from drilling with an oil-based mud, by steam distillation. If necessary, the contaminated substrate 10 can be pretreated with an emulsion breaker 14. The contaminated substrate 10 can be treated with steam 16 in a first mixing still 12. The substrate can be optionally treated with a second steam source 20 in a second mixing still 18. The steam provides heat to vaporize the oil, moisture to treat the substrate and water to the reaction mixture. Recoverable constituents in the vapor can be condensed in a vapor collection system 24. The treated substrate 22 is essentially free of oil and can have a controlled water content. The process exhibits low energy consumption, rapid treatment, compact equipment and a high degree of process control.

A process for producing unsaturated and saturated free fatty acid from trap oils, trap greases, brown greases and grease trap waste as starting material. The process consist in subjecting the starting material to a pretreatment, a first purification step, a fractional step, a second purification step and eventually a hydrogenation step. Methyl esters of unsaturated and saturated free fatty acids, oleic acid and stearin is obtained from this process.

A process for preparing Chinese medicines includes such steps as extracting, solid-liquid separating, heating for sterilizing, and vacuum concentrating. Its complete set of apparatuses is composed of extractor, solid-liquid separator, sterilizer and vacuum concentrating unit. Its advantages are high automation level, productivity and quality of product, and low energy consumption.

The distiller includes an exchanger (6) of tubes (7) which fill with the liquid to be treated, means (14) of heating, means (23) for compressing the steam from evaporation of the liquid, means (24) for feeding the compressed steam around the tubes (7) and means (27, 28) for inducing turbulence into the liquid, preferably by making the compressed steam bubble inside it. The method includes heating the liquid and supplying it to the tubes of the exchanger, compressing the resulting steam and bringing it into contact with the exterior of the tubes. The equipment uses a distiller such as that described. The invention permits treatment of sewage and other liquids by distillation, with minimum energy consumption and in a small space.

One exemplary embodiment can be a system for separating a plurality of naphtha components. The system can include a column, an overhead condenser, and a side condenser. Generally, the column includes a dividing imperforate wall with one surface facing a feed and another surface facing at least one side stream. Typically, the wall extends a significant portion of the column height to divide the portion into at least two substantially vertical, parallel contacting sections. Typically, the overhead condenser receives an overhead stream including a light naphtha from the column. Usually, a side condenser receives a process stream from the column and returns the stream to the column to facilitate separation. A cooling stream may pass through the overhead condenser and then the side condenser.

A desalination system wherein a latent heat of condensation produced by the temperature gradient across a membrane distillation (MD) module is transferred directly to a latent heat of vaporization during desalination of a liquid flow stream. The desalination system comprises the MD module disposed within an object and configured to receive an input feed stream for desalination and produce an output flow stream of a product. The system also comprises a vapor compressor in fluidic communication with the MD module and configured to introduce a hot steam to a high temperature side of the MD module and extract a cool steam, having a temperature less than the hot steam, from a low temperature side of the MD module, thereby creating a temperature gradient across of the MD module. A desalination method is also presented.

The invention discloses a method suitable for controlling the concentration of hydrogen sulfide tail gas in a low-temperature methanol washing process. The method comprises the steps that a sulfur-bearing methanol rich solution dissolved with sulfide and carbon dioxide is subjected to flash evaporation via a medium-pressure flash evaporation tower; fuel gas such as CH4, CO and H2 dissolved in the solution is desorbed and recovered; the methanol solution after the flash evaporation is subjected to pressure reduction and gas stripping to allow a carbon dioxide component to be desorbed from the solution; sulfide is still dissolved in the methanol solution via secondary washing and absorption of the solution to achieve sulfide enrichment; the sulfur-bearing methanol rich solution is heated and then subjected to the flash evaporation; flash evaporation gas returns to a secondary absorption tower to strengthen the sulfide enrichment; the obtained sulfur-bearing methanol solution enters a heat regeneration tower to allow sulfide and residual CO2 to be fully desorbed by the action of steam stripping of methanol steam; and non-condensable gas, namely the acid sulfide tail gas is obtained by further condensation and cooling via a tail gas heat exchanger and a hydrogen sulfide tail gas chiller. The method has the advantages that the method is energy-saving and consumption-reducing, and can adapt to different sulfur recovery technology requirements.

This invention relates to a simple, convenient, portable mini-distillation apparatus for the production of essential oils and hydrosols, said apparatus is useful to distill essential oils and hydrosols such as rose water, ajowain water from fresh and dried plant material like leaves, flowers, roots and rhizomes by water distillation, water and steam distillations and as an optional, steam distillation can also be performed at atmospheric pressure as well as slightly higher and lower than atmospheric pressure, said apparatus can be heated on brick-clay furnace with small agro-waste, LPG cooking gas, electrically heated stove or kerosene/diesel burner etc. and requires minimum attention during handling; since the apparatus is made of stainless steel and glass, the essential oil distilled is of better quality.

Disclosed herein are methods for the recovery of an organic acid, such as a heat stable lactic acid, from a feed stream which contains at least one of an organic acid amide, an organic acid ammonium salt, or an alkylamine-organic acid complex. The feed stream is mixed with at least one azeotroping agent. The azeotroping agent is a hydrocarbon capable of forming at least one azeotrope with the organic acid that is produced by the thermal decomposition of the amide, ammonium salt, or complex in the feed stream. Preferably the azeotrope is a heteroazeotrope. The mixture of the feed stream and the azeotroping agent is heated to produce a vapor stream. The azeotrope is a component of the vapor stream. The vapor stream can be condensed to a liquid stream, and the organic acid is recovered in the liquid stream that is produced. When the azeotrope is a heteroazeotrope, the vapor stream can be condensed into a liquid stream, which can be separated into a first phase and a second phase. The first phase contains the highest concentration of organic acid and the second phase contains azeotroping agent. The organic acid can be further purified and/or concentrated from the separated first phase or from the liquid stream.

The invention provides a process method for regenerating an ionic liquid and separating recovering absorbents. The method for regenerating an ionic liquid and separating recovering absorbents is implemented by taking steam such as water and ethanol as sweeping gases, adopting different tower types, sweeping and removing absorbent in the ionic liquid at the temperature of 40-200 DEG C and under the pressure of 0.01-2.0MPa, and condensing the swept gases to separate steam from the absorbents. According to the process method, steam is enabled to pass through the ionic liquid through a bubbling or gas-liquid inverse contact method, the mass transfer effect is enhanced by adopting various tower types, and the regeneration of the ionic liquid is realized; the steam is cooled into a liquid by condensing, and the absorbents are kept in a gaseous state, so that the swept absorbents are separated and recovered; and the condensed steam is reheated and applied to sweeping of the ionic liquid. Due to the adoption of the process method provided by the invention, the ionic liquid can be regenerated effectively in a short time, and the reutilization of the ionic liquid and separation and recovery of the absorbents are realized.

A procedure is provided for the separation of close boiling impurities from products which have slightly higher polarity than the impurities, for example, separation of di-propylene glycol di-tert-butyl ether (DE) from di-propylene glycol mono-tert-butyl ether (DPTB) by distillation, water or steam being used as stripping component with heat provided by a reboiler.

The invention discloses rotary steam distillation equipment and belongs to the technical field of steam distillation equipment. The rotary steam distillation equipment is a vertical cylinder body, wherein the center of the shell is provided with a vertical rotary plunger; the rotary plunger is provided with a plurality of layers of funnel-form conical shells; and funnel-form conical shells connected with the shell are inserted between the funnel-form conical shells. The number of the layers of the funnel-form conical shells is 7 to 35. The rotating speed of a motor is 0 to 10,000 r/min. The included angle between the funnel-form conical shells and the rotary plunger is 30 to 75 degrees. The plurality of funnel-form conical shells are parallel. The funnel-form conical shells connected with the rotary plunger are parallel to the funnel-form conical shells connected with the shell. The rotary steam distillation equipment has the advantages that: the continuous feed of raw materials is realized, so the production efficiency is improved; the efficiency is high; the natural flavor of the materials is retained, so high-quality of fragrance is obtained; the loss of the components of the fragrance is less; and the selection range of the fragrant materials is wide.

The invention relates to a differential pressure type solid continuous distillation process, comprising the steps of: placing solid materials on a tower plate in a distillation tower, introducing vapor to the bottom of the tower plate for heating, collecting vapor by vaporizing materials from an outlet pipe at the upper part of the tower plate, and condensing the collected vapor by a condenser toobtain the product, wherein the heating process comprises a preheating loop, a distilling loop and a residual distilling loop. In the invention, the distillation process has scientific and reasonabledesign, realizes fast and efficient continuous distillation process by arranging different operation conditions in each loop, has the advantages of simple operation, large processing load, high production efficiency, high yield and the like, and can efficiently guarantee the consistency stability of the final product of distillation simultaneously.