An oil dehydrator, comprising; a vacuum chamber, a vacuum pump arranged at an upper end region of the vacuum chamber for establishing a negative pressure within the vacuum chamber and for fluid transportation of water and air out from the vacuum chamber through an outlet opening, and a pipe for fluid transportation of oil into and/or out from the vacuum chamber, where the pipe is connected to a lower end region of the vacuum chamber, wherein the vacuum chamber at the lower end region has at least one flow channel fluidly connecting the vacuum chamber and the pipe, wherein an orifice check valve is arranged between the vacuum chamber and the pipe for controlling the flow of oil into and out from the vacuum chamber through the at least one flow channel.

A distillation plant comprises an elongated vessel extending along a longitudinal axis and defining an inner space, and a plurality of plate heat exchangers, which in an operating position are arranged after each other along the longitudinal axis in the vessel. Each plate heat exchanger comprises a plurality of heat exchanger plates, each defining an extension plane. The heat exchanger plates form first plate interspaces and second plate interspaces. The first and second plate interspaces are arranged in an alternating order in the plate heat exchanger. At least one of the plate heat exchangers is associated with a respective opening through the vessel, and is removable from the operating position out of the vessel through the associated opening by being moved in a displacement direction, which is perpendicular to the extension plane of the heat exchanger plates.

A vacuum distillation unit and process for separating components of reduced crude oil by operating the vacuum distillation unit. The process includes feeding reduced crude oil in a vacuum column by a feed line, supplying a stripping stream at a lower portion of the vacuum column by an ejector, receiving an overhead vapour stream by the ejector from an upper portion of the vacuum column, creating the stripping stream in the ejector by mixing the overhead vapour stream into a steam, and supplying part of the stripping stream at the lower portion by the ejector to re-circulate the overhead vapour stream from the upper portion to the lower portion of the vacuum column.

An evaporation system employs a thermocompressor to recover heat associated with a distillate produced by an evaporator and to use the recovered heat to preheat evaporator feedwater. In one example, the thermocompressor produces a thermocompressor discharge that is directed into the deaerator, contacting and preheating the evaporator feedwater passing therethrough. In another example, the thermocompressor discharge is directed through a barometric condenser which contacts evaporator feedwater therein and condenses and in the process preheats the evaporator feedwater.

The present invention relates to a device and also to a method for separating and recovering a cyclic diester, in particular dilactide or glycolide from polymer melts which include the cyclic diester as impurity. The device and also the method according to the invention allow recovery of the cyclic diester with a high yield and at the same time high purity.

An evaporation system employs a thermocompressor to recover heat associated with a distillate produced by an evaporator and to use the recovered heat to preheat evaporator feedwater. In one example, the thermocompressor produces a thermocompressor discharge that is directed into the deaerator, contacting and preheating the evaporator feedwater passing therethrough. In another example, the thermocompressor discharge is directed through a barometric condenser which contacts evaporator feedwater therein and condenses and in the process preheats the evaporator feedwater.

A distillation plant comprises an elongated vessel extending along a longitudinal axis and defining an inner space, and a plurality of plate heat exchangers, which in an operating position are arranged after each other along the longitudinal axis in the vessel. Each plate heat exchanger comprises a plurality of heat exchanger plates, each defining an extension plane. The heat exchanger plates form first plate interspaces and second plate interspaces. The first and second plate interspaces are arranged in an alternating order in the plate heat exchanger. At least one of the plate heat exchangers is associated with a respective opening through the vessel, and is removable from the operating position out of the vessel through the associated opening by being moved in a displacement direction, which is perpendicular to the extension plane of the heat exchanger plates.

A method for distilling a fluid includes moving a fluid to be distilled into a distilling column. A motive fluid is pumped into a liquid-driven gas ejector. Gas from a vapor outlet of the distilling column is discharged into a gas inlet of the ejector. Fluid is conducted from an outlet of the ejector into a heat exchanger. Heat from fluid conducted from the ejector is transferred to at least one of the fluid moved into the distilling column and an interior of the distilling column.

Disclosed is a VE Enrichment System, comprising a falling film heat exchanger, a deodorization tower (deodorizer), a deodorizer transfer pump, a post-stripping deodorization tower (post-stripper), a high pressure steam heater and fatty acid collection unit. The falling film heat exchanger comprises of 2 shell heat exchange section of which the bottom section is connected to the deodorizer and the upper section is connected to the high pressure steam heater which is then connected to the post stripper; the post stripper bottom outlet is connected back to the falling film heat exchanger at it tube side. The post stripper top outlet (vapour outlet) is connected to the fatty acid collection unit. The upper shell section of the falling film heat exchanger and the high pressure steam heater forms a loop with the post stripper, while another loop is formed for the bottom of shell section of the falling film heat exchanger and the deodorizer and its transfer pump. Depending on operation needs, a vacuum ejector can be added. This VE enrichment system is used to produce more fatty acid distillate with higher VE content during the deodorization process of vegetable oil.

A distilling heat pump includes a distilling column, a heat exchanger, a pump and a liquid-driven gas ejector. A liquid inlet of the ejector is in fluid communication with an outlet of the pump. A gas inlet of the ejector is in fluid communication with a vapor outlet of the distilling column. An outlet of the ejector is in fluid communication with a fluid inlet of the heat exchanger. A fluid outlet of the heat exchanger is in fluid communication with an inlet of the pump. The heat exchanger is in thermal communication with at least one of a fluid inlet to the distilling column and an interior of the distilling column.