How Valve Setup Helps to Reduce the Cost for Steam Systems

Related Vendors

EDL Anlagenbau Gesellschaft mbH

Italvacuum, Srl

Donadon SDD Srl

Schubert & Salzer Control Systems GmbH

Control Dynamics at the Highest Performance Level

By analysing its frequency response, the dynamics of a control valve can be evaluated in terms of its control performance. This aspect was studied experimentally, for example, in for different control valve systems.

The general conclusion which can be gathered from this is that the use of sliding gate valves in a control circuit results in higher critical gains. On the one hand, therefore, the process controller can be set “more aggressively”, while, on the other hand, overshooting is reduced when approaching a changed set point value, which is also reached more quickly.

Depending on the plant and process, it is therefore possible to tap into potential additional savings simply by exchanging a globe style valve by a sliding gate valve. By doing so, the quantities of steam fed unnecessarily into the system by an overshooting action are reduced. This is supported by the figures recorded by operators of different steam systems.

Tobacco Manufacturer Reduces Steam Consumption by 30 %

In the three lines at the Chinese tobacco manufacturer, Hongta Tobacco, the tobacco is conditioned at different temperatures. The process variable defining the quality is the temperature setting at 60, 65 or 70 °C. Depending on the temperature setting required, previously Hongta Tobacco had required up to 990 kg of steam per hour for this process.

(ID:39582940)