VPC - HUBER

VPC - HUBER VPC - HUBER

05.11.2012 Aufrufe

Fallstudie: Unistat ® 815 110 www.huber-online.com Fallstudien Controlling a 6-litre DDPS jacketed glass reactor Requirement Chemistry at cryogenic temperatures raises questions on the level of control that can be expected at low temperatures. This case study looks at the ability of a Unistat 815 to cool and control a “DDPS” 6-litre glass reactor to low temperatures. Method The DDPS reactor was connected to the Unistat 815 using two 1-metre long M38x1.5 insulated hoses. The HTF used was Huber’s “M90.055.03”, a silicon based HTF. Manteltemperatur Prozesstemperatur Sollwert Results The second and third curves demonstrate the pin point and repeatable control made possible through “TAC” control as the Unistat 815 ramps the process temperature between 20 °C and -50 °C and back then from 20 °C to -30 °C. Setup details Temperature range: -85...+250 °C Cooling power: 1.5 kW @ +250…-20 °C 1.4 kW @ +40 °C 1.2 kW @ -60 °C 0.2 kW @ -80 °C Heating power: 2.0 kW Hoses: 2x1 m; M38x1.5 (#9616) HTF: M90.055.03 Reactor: 6-litre insulated jacketed glass reactor Reactor content: 4 litre M90.055.03 Stirrer speed: ~ 200 rpm Control: process

Fallstudie: Unistat ® 905w Unistat ® 905w cycling a 50-litre Chemglass uninsulated glass jacketed reactor between 20 °C and -60 °C. Requirement The Unistat 905w is designed to operate with smaller reactors (15 to 20 litre) at low temperatures. This case study looks at how well the Unistat 905w controls process temperature inside a relatively larger, un-insulated 50-litre glass jacketed reactor when cycling the process temperature between 20 °C and -60 °C. Method The reactor was filled with 34.5 litre of M90.055.03 as a thermal load. The stirrer was set to 100 rpm and the control set to “Process”. The results were recorded using the Huber “SpyLight” software. The HTF (Heat Transfer Fluid) used was M90.055.03. Results It can be seen from the graphic how quickly the jacket ramps creating a wide difference in temperature between the jacket and process in the cool down phase resulting in the process reaching -60 °C from 20 °C (60 K) in approximately 2-hours and 20-minutes. Setup details Temperature range: -90...+250 °C Cooling power: 3.6 kW @ 0 °C 2.2 kW @ -60 °C 0.7 kW @ -80 °C Heating power: 6 kW Hoses: 1x2 m; M30x1.5 (#6427) 1x1 m; M30x1.5 (#6426) HTF: M90.055.03 (#6259) Reactor: 50-litre un-insulated jacketed glass reactor Reactor contents: 34.5 litre M90.055.03 (#6259) Reactor stirrer speed: 100 rpm Control: process Manteltemperatur Prozesstemperatur Sollwert Fallstudien The heat-up rate demonstrates the remarkable level of control with the jacket ramping to 92 °C to pull the process back towards 20 °C. As the process temperature approaches the target temperature the jacket rapidly cools to approximately 23 °C to bring the process to 20 °C in approximately 45 minutes. 111 Fallstudien

Fallstudie:<br />

Unistat ® 815<br />

110 www.huber-online.com<br />

Fallstudien<br />

Controlling a 6-litre DDPS jacketed glass<br />

reactor<br />

Requirement<br />

Chemistry at cryogenic temperatures raises<br />

questions on the level of control that can be<br />

expected at low temperatures. This case study<br />

looks at the ability of a Unistat 815 to cool and<br />

control a “DDPS” 6-litre glass reactor to low<br />

temperatures.<br />

Method<br />

The DDPS reactor was connected to the Unistat<br />

815 using two 1-metre long M38x1.5<br />

insulated hoses. The HTF used was Huber’s<br />

“M90.055.03”, a silicon based HTF.<br />

Manteltemperatur<br />

Prozesstemperatur<br />

Sollwert<br />

Results<br />

The second and third curves demonstrate the pin point and repeatable control made<br />

possible through “TAC” control as the Unistat 815 ramps the process temperature<br />

between 20 °C and -50 °C and back then from 20 °C to -30 °C.<br />

Setup details<br />

Temperature range: -85...+250 °C<br />

Cooling power: 1.5 kW @ +250…-20 °C<br />

1.4 kW @ +40 °C<br />

1.2 kW @ -60 °C<br />

0.2 kW @ -80 °C<br />

Heating power: 2.0 kW<br />

Hoses: 2x1 m; M38x1.5 (#9616)<br />

HTF: M90.055.03<br />

Reactor: 6-litre insulated jacketed<br />

glass reactor<br />

Reactor content: 4 litre M90.055.03<br />

Stirrer speed: ~ 200 rpm<br />

Control: process

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