40 results about "Bench scale" patented technology

An industrial scale batch or semi-continuous batch PHA extraction process wherein the process operating conditions and control may be quantitatively tuned to batch-to-batch variations based on a practical bench scale assessment but more preferably by means of a calibrated chemometric assessment of the biomass quality. Tuning involves the selection of biomass loading conditions that are commensurate with process solvent and PHA type. Batch operating times and temperatures are matched to modelled and monitored extraction kinetics. PHA-rich solvent gelation is exploited by controlling PHA-rich solvent gel formation. In combination a process Is disclosed that permits for robust and consistent recovered product quality control while at the same time enabling to improve overall process economics.

The present invention provides methods for optimization of the harvest process by clarification of cell samples using centrifugation and depth filtration. The present invention provides methods for the determination of the optimal ratio of Q / Σ for the centrifugation step of a harvest process of a cell culture. The present invention provides methods for the determination of the number of particles and the size of the particles in the centrate of a centrifugation step of a harvest process of a cell culture by the use of imaging technology. The present invention provides methods for the scaling of the harvesting process from lab-bench scale to industrial scale.

The invention relates to a bench-scale dynamic membrane bioreactor capable of continuously updating a dynamic membrane, which is characterized in that: a container is divided into an upper aerobic zone and a lower anoxic zone by a separating orifice plate, and an aerator group is arranged on the separating orifice plate; a microgrid component consists of a wave curve-shaped microgrid net body, a casing, a bottom net, 2 to 3 layers of spherical porcelain granules uniformly spread on the bottom net, a backwash nozzle, an air-jet wash-out brush head, a hollow shaft tube, and a rotation driving mechanism, wherein backwash nozzle and the air-jet wash-out brush head are arranged above and under the net body respectively and are positioned on the same plane, and the hollow shaft tube and the rotation driving mechanism drive the backwash nozzle and the air-jet wash-out brush head to rotate continuously; the microgrid component is arranged on the top of a tank horizontally; and the center of the microgrid net body is provided with the hollow tube the inside of which has a built-in separating plate, the part, above the separating plate, of the shaft tube is connected with the rotation driving mechanism, a water source and the backwash nozzle, the part, blow the separating plate, of the shaft tube is connected with an air source and the air-jet wash-out brush head, and the lower end of the hollow shaft tube rotates and is connected with the aerator group in a sealing mode. The invention has the advantages of improving denitrification and dephosphorization effect, achieving microfiltration solid-liquid separation effect, ensuring effluent flux and optimizing and simplifying power and control systems.

An apparatus for testing a cleaning procedure for a material. The apparatus includes a rack having a seat configured to retain a plurality of test coupons at a predetermined angle, an upper tray that distributes a solution along the lines of the rack, a lower tray for receiving solution passed over coupons disposed on the rack, a meter that gauges a flow rate of the solution, a thermostatic heater adapted to bring the solution to a predetermined temperature, and a variable speed pump that directs the solution from a reservoir to the upper tray.

The invention relates to an intelligent aggregate proportioning platform scale, which effectively solves the problem that the existing aggregate proportioning platform scale cannot automate the proportioning test for the optimum particle size aggregate and the optimum cement dosage according to needs; The technical scheme includes: the intelligent aggregate proportioning platform scale can complete the proportioning between aggregates of different particle sizes and the corresponding cement dosage, and carry out the compression test on the test pieces made under the corresponding proportioning, and finally get the final result. The mixing ratio of the best aggregate particle size and the best cement dosage, and under the action of the mixing platform scale, the whole test mixing process is highly automated, which provides greater convenience for the work of the test personnel and greatly reduces the Reduced the labor intensity of the test personnel.

The invention discloses a method for preparing diethyl oxalate by CO coupling reaction. By applying a gas phase method, CO is coordinated with ethyl nitrite and is catalyzed by bimetallic supported catalyzer to couplingly generate crude diethyl oxalate, the reaction is a self-sealing circulation process, the CO gas mixed with the ethyl nitrite coming from a regeneration reactor is preheated and then enters into a coupling reactor, after the reaction, the gas is separated by condensation, so that the colorless and transparent condensed diethyl oxalate liquid is produced, and the uncondensed gas containing NO enters into the regeneration reactor to react with ethanol and oxygen in order to generate ethyl nitrite which is again circulated back to the coupling reactor for continuous use. The invention is carried out on the basis of previous laboratory research and under the background of industrial production and fulfils the continuous run examination of the bench scale test and pilot magnification under the condition of industrial operation, the temperature of the coupling reaction is low, and the concentration of products is increased. The method has the advantages of more energy saving, no pollution and high benefit. The total conversion rate of the CO generated by reaction is one hundred percent, and the selectivity of diethyl oxalate is over ninety six percent.