摘要:
There is described a process and an apparatus for purifying a mixture and related products. In particular, there is described a process and an apparatus for purifying a mixture comprising fats, oils and greases as are typically found in sewer waste. The process involves heating, acidifying and separating the mixture. The apparatus used includes a heating and separation device for separating into a solid fraction, an organic liquid fraction and an aqueous liquid fraction. Apparatus such as a three phase separation unit and a rotary vacuum filter may also be used.
摘要:
A process for producing aromatics from a hydrocarbon source in the presence of supercritical water comprising the steps of mixing a pressurized, pre-heated water stream with a pressurized, pre-heated petroleum feedstock, the pressurized, pre-heated water stream at a pressure above the critical pressure of water and a temperature above the critical temperature of water, feeding the combined stream to a supercritical water reactor to create a modified stream, cooling and depressurizing the modified stream, separating the depressurized stream in a vapor-liquid separator, condensing the vapor stream, separating the condensed stream into a water recovery stream and a light product recovery stream, extracting the aromatics from the light product recovery stream, depressurizing the liquid stream, separating the depressurized liquid stream in a heavy separator into an upgraded product stream, and recycling part of the upgraded product stream to the pressurized, pre-heated petroleum feedstock as a product recycle.
摘要:
Operation of an oil-water separator or other liquid mixture separator is monitored. The separator uses a vessel through which a mixture of different liquid components flows horizontally. A plurality of ultrasound transducers is provided on a wall of the vessel at different heights at a common stage along the direction of the horizontal flow. Ultrasound at a plurality of different ultrasound wavelengths is transmitted through the vessel between transducers and ultrasound arriving transducers is detected. Parameter values of a model are fitted to the detection. A model is used that relates height dependent properties of liquid in the vessel to properties of the detected ultrasound transmission between transceivers, the model comprising at least a fittable parameter of a height dependent droplet size distribution in a least a sub-range of a height of liquid in the vessel. The model relating the droplet size distribution to ultrasound wavelength dependence of the properties of ultrasound transmission. The measured droplet size distribution may be used to determine the route of ultrasound paths and to control demulsification measures.
摘要:
A device for a cleaning unit for hydraulic oil or lubricating oil circulating in connection with a drive unit, wherein the cleaning unit comprises a cleaning tank (1) provided with an oil inlet (21) for untreated oil (14a), means (11, 12) arranged to spread the untreated oil (14a) over a substantial portion of the cleaning tank (1) cross-section, en inlet (41) for introducing gas into the untreated oil, and an outlet (37) for evacuation of gas and water vapour, and also a means (16) having a large surface area arranged downstream of the spreader means (11, 12), wherein the means (16) having a large surface area is provided as a plurality of bodies (161) arranged to be able to float on the treated oil (14b).
摘要:
The invention relates to a device and a method for removing a compound related to the production of bio-diesel resulting from a transesterification step, said compound being ethanol or methanol or water, that comprises a stripping column at a pressure higher than or equal to the atmospheric pressure using a gas that mainly contains nitrogen or CO2 or mixtures thereof, the column being preferably connected to an exchanger of the cryogenic type. The invention also relates to a method for purifying bio-diesel resulting from a transesterification step, and to equipment for producing bio-diesel that comprises said device and implements said methods.