Abstract:
The invention pertains to reaction systems in which at least one capillary unit is applied. The capillary unit comprises: - a unit inlet for receiving a fluid flow, - a unit outlet for releasing said fluid flow, - a capillary, which capillary is arranged between the unit inlet and the unit outlet such that said fluid flow passes through the capillary, - a heater and/or a cooler for adjusting the temperature of the capillary and therewith influencing the flow rate of the fluid flow passing through said capillary, - a housing for accommodating at least the capillary and heater and/or cooler of said capillary unit, which housing provides thermal insulation of the capillary, - a flow sensor for measuring the flow rate of the fluid flow through the capillary unit, which flow sensor can be arranged either inside or outside the housing, A capillary unit is combined with or further has a flow adjustment unit for adjusting the flow rates of the secondary fluid flows, which flow adjustment unit comprises a temperature control device for individually controlling the heater and/or cooler of each capillary unit in response to the flow rate that is measured by the flow sensor of that capillary unit.
Abstract:
The invention pertains to reaction systems in which at least one capillary unit is applied. The capillary unit comprises: - a unit inlet for receiving a fluid flow, - a unit outlet for releasing said fluid flow, - a capillary, which capillary is arranged between the unit inlet and the unit outlet such that said fluid flow passes through the capillary, - a heater and/or a cooler for adjusting the temperature of the capillary and therewith influencing the flow rate of the fluid flow passing through said capillary, - a housing for accommodating at least the capillary and heater and/or cooler of said capillary unit, which housing provides thermal insulation of the capillary, - a flow sensor for measuring the flow rate of the fluid flow through the capillary unit, which flow sensor can be arranged either inside or outside the housing, A capillary unit is combined with or further has a flow adjustment unit for adjusting the flow rates of the secondary fluid flows, which flow adjustment unit comprises a temperature control device for individually controlling the heater and/or cooler of each capillary unit in response to the flow rate that is measured by the flow sensor of that capillary unit.
Abstract:
The invention relates to a laboratory degradation test system for testing degradation of a test specimen in a test fluid flow, the test system comprising: - a reactor assembly, which reactor assembly comprises: - a reactor vessel, the reactor vessel having a reaction space, an inlet and an outlet and a specimen holder for retaining a test specimen inside the reactor vessel, - a heater for heating the reactor vessel, - a fluid circulation system generating a test fluid flow over the test specimen, which fluid circulation system comprises: - a circulation line which extends between the outlet of the reactor vessel and the inlet of the reactor vessel, which circulation line is arranged outside the reactor vessel, - a pump for providing fluid circulation through the circulation line and the reactor vessel, which pump is arranged in the circulation line. The laboratory test system according to the invention is characterised in that the volume available to the test fluid inside the reaction space after insertion of the degradation test specimen is less than or equal to 10 ml.
Abstract:
Described is a method for the preparation of Mo-V-Te-Nb catalyst comprising the steps of a) preparing a slurry comprising ionic species of Mo, V, Te and Nb and an inert carrier by combining the inert carrier in ceramic form with one or more solutions comprising the above metal ionic species; b) drying of the slurry to obtain a particulate product; c) precalcining the dried particulate product at a temperature of 150-350°C in an oxygen-containing atmosphere; d) calcining the precalcined dried particulate product at a temperature of 350-750°C in an inert atmosphere to obtain the catalyst. Further, a catalyst obtainable by the said method as well as uses thereof are described.
Abstract:
The invention relates to a system for measuring flow rates of fluid flows to parallel reactors, comprising: - a common feed line, - a plurality of reactor feed lines for receiving a reactor fluid flow, - a measurement line, and - a valve system, comprising one or more valves and a valve control unit for controlling the one or more valves, the valve system being arranged and/or adapted such that it can assume a measurement setting in which the valves redirect one of the reactor feed flows such that it flows through the measurement line.
Abstract:
The invention pertains to a flow controller assembly for microfluidic applications, which flow controller assembly comprises at least one microfluidic flow controller, which microfluidic flow controller comprises: - a microfluidic chip, which microfluidic chip comprises a channel for accommodating a fluid flow, which channel runs through said microfluidic chip and has a channel inlet that is connectable to a fluid source and a channel outlet that is connectable to a further fluid conduit, - a thermal energy transmitter, which thermal energy transmitter is adapted for heating and/or cooling at least a part of the channel by producing a thermal output, thereby influencing the flow rate of fluid that is present in said channel, - a flow sensor for measuring the flow rate of a fluid running through the flow controller, said flow sensor being adapted to produce flow rate measurement data, - a data control unit, which is connected to the flow sensor by a first data connection which first data connection allows the data control unit to receive flow rate measurement data from the flow sensor, which data control unit is connected to the thermal energy transmitter by a second data connection, which second data connection allows the data control unit to influence the thermal output of the thermal energy transmitter, which data control unit comprises a data processing unit that is adapted to determine the difference between the measured flow rate and a preset desired flow rate and to regulate the thermal output of the thermal energy transmitter in order to obtain or maintain the desired flow rate.
Abstract:
The invention pertains to a flow controller assembly for microfluidic applications, which flow controller assembly comprises at least one microfluidic flow controller, which microfluidic flow controller comprises: - a microfluidic chip, which microfluidic chip comprises a channel for accommodating a fluid flow, which channel runs through said microfluidic chip and has a channel inlet that is connectable to a fluid source and a channel outlet that is connectable to a further fluid conduit, - a thermal energy transmitter, which thermal energy transmitter is adapted for heating and/or cooling at least a part of the channel by producing a thermal output, thereby influencing the flow rate of fluid that is present in said channel, - a flow sensor for measuring the flow rate of a fluid running through the flow controller, said flow sensor being adapted to produce flow rate measurement data, - a data control unit, which is connected to the flow sensor by a first data connection which first data connection allows the data control unit to receive flow rate measurement data from the flow sensor, which data control unit is connected to the thermal energy transmitter by a second data connection, which second data connection allows the data control unit to influence the thermal output of the thermal energy transmitter, which data control unit comprises a data processing unit that is adapted to determine the difference between the measured flow rate and a preset desired flow rate and to regulate the thermal output of the thermal energy transmitter in order to obtain or maintain the desired flow rate.