Boiler, DeNOx Back

Technical solution of control of combustion processes (boilers) and auxiliary operating units includes all the components necessary to optimize the technological facility operation. It involves both measuring and control of its combustion process and the section of flue gas cleaning to the parameters required by law.

Control of boiler parts

ZAT solution comprises separate, systemically mutually connectable parts of the control system into a single operating unit.

The basic means of control is the DCS platform ZAT SandRA concentrating in a single solution all the system information and tools for operation and maintenance of technological facility  through modern control methods. 

Boiler control circuits

  • drum level control
  • steam temperature control
  • output control (outlet pressure or amount of steam from the boiler)
  • boiler inlet air pressure control 
  • vacuum control in the combustion chamber
  • regulation of O2 content in flue gas
  • screw feeders balancing
  • DeNOx control

ZAT solution includes control systems of boiler parts for all commercially used types of combustion processes (i.e. realized types of boilers) and kinds of fuels within all legally relevant security categories.

Within the combustion process are realized individual operating units :

  • transportation and fuel preparation - internal coal handling, mills and separators, burners
  • water system consisting of a feed water pumps, level control in the feed tank and  pressure / temperature control of outlet steam
  • air section
  • flue section

For boiler control we offer our own  control system SandRA or  control system compatible with the whole unit control according to customer requirements.

Monitoring and visualization is realized through the use of tools of Czech and foreign producers.  From Czech producers are used software applications of  Geovap company (Reliance), Moravian Instruments Inc. (ControlWeb). From foreign producers  are used applications of  Wonderware (InTouch) and Siemens (WinCC).                             The diagnostic system is part of the process stations SandRA Z200