50 results about "Percolation process" patented technology

The invention relates to a device and a method for measuring surfactant concentration distribution in a CO2 emulsion percolation process. The device comprises a sand-filling core model, wherein the inlet end of the sand-filling core model is connected with emulsion generators and crude oil piston type intermediate containers which are connected in parallel; the inlet ends of the emulsion generators are connected with CO2 piston type intermediate containers and surfactant piston type intermediate containers which are connected in parallel; the outlet end of the sand-filling core model is connected with a gas source bottle and a liquid containing bottle which are connected in parallel through back-pressure valves; a plurality of equal-interval sampling openings are formed in the top surface of the sand-filling core model and are communicated with the core in the sand-filling core model; each sampling opening is connected with a sampler through a pipeline with a valve. When sampling is carried out at different parts of the model, water phases are separated from CO2 phases, CO2 phase samples are dissolved in water, and the high performance liquid chromatography (HPLC) is adopted to detect the concentration of the surfactant. The device and the method are simple in operation, and the detected accuracy is high.

A method for operating a fermentation plant with at least one digester that is supplied with a substrate. The substrate is percolated using a percolate from a percolate container and biogas that is generated via the percolation process in the digester or / and in the percolate container is drawn off. The drawn off biogas is treated in a biogas treatment device and the CO2-containing exhaust gas that is generated during the treatment is introduced into the digester using a purge line, for forcing out and drawing off the biogas that was generated in the digester. Alternatively CO2-containing biogas that was generated in an additional digester in a different fermentation process can be introduced into the digester for forcing out and drawing off the biogas that was generated in the digester. The CO2-containing purge gas is forced to pass through the substrate dislodging any trapped biogas.

The invention discloses a fluid-solid-heat coupling triaxial servo percolation device for gas-contained coal, comprising a lifting stand, a hydraulic servo control system, an axial loading device mounted at the top of the lifting stand and a triaxial pressure chamber connected with the lower end of the axial loading device. A thermostatic water tank is arranged below the triaxial pressure chamber; a movable worktable is arranged above the thermostatic water tank; the lower end of the triaxial pressure chamber is arranged on the movable worktable; heating tubes are arranged in the thermostaticwater tank; and a water inlet valve, a water drain valve and a water-bath circulating water pump are arranged outside the thermostatic water tank and are communicated with the thermostatic water tank. In the hydraulic servo control system, an axial compression loading oil pump is communicated with an oil inlet and an oil outlet by a pipeline, and a peripheral compression loading oil pump is communicated with an oil intake / drain hole by a pipeline. The fluid-solid-heat coupling triaxial servo percolation device for gas-contained coal can carry out the research of gas-contained coal percolationtests in states, such as different terrestrial stresses, different gas pressures, different temperatures, and the like and the distortion and failure characteristics of the gas-contained coal in a percolation process.