Electrostatic Precipitator Power and Control

Electrostatic Precipitators (ESPs) are used to collect solid particulate matter from the exhaust gases emitted by industrial processes such as coal-fired power generation, steel and cement manufacturing, and waste incineration. They are also used in a similar manner in chemical and wet processes. Castlet has a complete range of products to power and control this system.

MCSIII Controller product family

The MCSIII product family includes the MCSIII AVC (utilising specialist techniques for anti-coincidental rapping management, in built energy management responding to opacity levels, and Regupulse, a highly developed algorithm used for detecting and eliminating ESP back corona (BI) due to high resistivities of dust in found in many power stations and steel sinter plants), a networked colour-touch HMI, 1-1 Keypads, gateway interface for communications, and I/O interfaces to avoid the use of PLCs.

HV Control Cubicles

HV Cubicles are provided to house the MCSIII Automatic Voltage Controller, with its associated power and control circuits, switching inverse parallel pair thyristors to deliver the correct power to the TR Units. Cubicles are constructed from folded sheet steel, single door, painted to suit switchroom environments, with cable power connections or via a common busbar system.

HV Transformer Rectifiers

HV Transformer Rectifier Units are used to provide a high negative dc voltage, typically between 45kVpoc to 130kVpoc at dc currents typically between 100mA and 2200mA. The TR Units are suitable for outdoor use to IP65 protection standard, hermetically sealed, ONAN cooled using either mineral oils or synthetic fluids such as Silicone fluid or Midel. Coatings are suitable for outdoor coastal and aggressive environments.

Earthing switches

In order to isolate and earth the power supplies for personnel access into the ESP internals, HV Transformer Rectifier Units need to be fully earthed. Earthing switches, are either disconnect earth or common earth types. These switches are either incorporated into the TR Unit construction, or mounted externallyvia a separate enclosure with viewing window, depending on clients needs. For fast acting earthing, (ie in the presence of significant levels CO within the ESP, Automatic Solenoid operated switches are available.