Qscan - QSCAN solvent test street

Facility Location
City & country
Delft (Netherlands)
Description & contacts of the access provider
Legal name of organisation
TNO - Nederlands Instituut voor Toegepast Natuurwetenschappelijk Onderzoek
Infrastructure contact - Primary contact
Peter van Os
RICC contact - Secondary contact
Marco Linders
Facility Availability
Unit of access
Availability per year
Min 4 weeks
Expected duration of single experiment:
Typical 24-48 hours, but even up to 1 week
Operational or other constraints
Specific risks:
High pressure limit c.5 bar

The Mini AutoClave (MAC) for quick scan purposes is a setup for medium throughput vapour-liquid-equilibrium (VLE) equipment where six experiments can be performed simultaneously.

An advantage is the relatively small volume of solvent needed to run a proper test. All six reactors can run independently of each other and can be started and stopped at any time.

A typical measurement takes about 24 to 48 hours. The test set-up is divided into two temperature sections.

Three reactors are heated to 40°C by a water bath and three reactors are connected to an oil bath and can be heated to any temperature between ambient and 120°C and these three reactors run at the same temperature. Vaporliquid equilibrium measurements are performed in 0.1 litre reactors equipped with a magnetic stirrer and a pressure gauge. Typically, 0.05 litre of solvent is used.

The solvent in the reactor can be heated up and equilibria can be determined at a constant temperature of the solvent. From these data so-called pressure-loading (P-α) curves can be constructed. The pressure (P) is obtained as a function of the loading (α). The loading is expressed in mol CO2/mol solvent. For the glass reactors, measurements have an upper limit of about 7 bars.

For safety reasons, a high pressure limit of about 5 bar was chosen. This implies that the P-α curves, measured at the MAC set-up, range from about 2 to 5000 mbar.

State of the art, uniqueness, & specific advantages

A variety of analytical equipment is available to determine gas and liquid composition. Modelling tools are available to perform simulations of the underlying separation principles (thermodynamics, kinetics). Software tools are available to perform process design and development (flow sheeting and scale-up) as well as to perform technical and economic evaluations

Scientific Environment

The facility is successfully used for business to business projects and other research programmes such as greenhouse applications, production of gases, materials testing.


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