Specifications

System

Overview

Reactor Assembly

Reaction

Mixing

NOTE Agitation parameters are set using the Controller Unit. For instructions, see

Operating the Quest

210,

Setting Agitation Parameters.

Agitation

The Quest agitation system consists of a pneumatically actuated Magnet

Bar

which

vertically oscillates behind the two reaction vessel banks. Small Teflon encapsulated

magnets are placed in the RV tubes. As the Magnet bar oscillates, the magnets in the

reaction vessels vertically oscillate with it, causing mixing to occur.

Magnet Bar

The magnetic bar is an aluminum assembly with cylindrical magnets mounted along its

length. It is positioned in between the two reaction vessel banks, perpendicular to the

reaction vessels. The bar is attached to a vertical rod, which is controlled by a

pneumatic cylinder. When gas is supplied to either end of the pneumatic cylinder, it

causes the rod to oscillate vertically. Valves in the Controller Unit, alternatively supply

psi gas to the bottom and top of the gas cylinder, moving the piston and magnet bar

up and down, respectively.

The velocity of the oscillating vertical mixing strokes is controlled by regulating the gas

flow rate to the pneumatic cylinder. This gas regulation is controlled by a needle valve,

located on the front panel of the Quest Controller. Increasing or decreasing the flow rate

of the gas to the pneumatic cylinder will respectively increase or decrease the stroke

velocity.

Fluidic System

The Quest Fluidic system allows for the parallel delivery of solvent to the reaction

vessels, and also a gas supply for draining andlor blanketing the reaction vessels.

See

Appendix

Quest Plumbing Schematic.

Two key components of the Quest fluidic system are the Upper Manifold, which is used

to control liquid and gas flow to the vessels, and the Lower Manifold, which is used to

control reaction vessel draining. There is one Upper Manifold and one Lower Manifold

for each side of the Quest.

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