Denitration | What is a SCR system? What is the composition of PLC control system?

Release time:

2022-09-15

What is a SCR system?

SCR system is an integrated system that can remove NOx from exhaust gas of internal combustion engine.

The system is composed of catalyst, PLC control system, compressed air supply system, urea supply system, reactor shell, injection mixing section and heat dissipation system.

What is the composition of PLC control system?

The PLC control system is equipped with a general fault alarm light and a touch screen alarm prompt function, which can control the operation status of core components (urea metering pump, nitrogen oxide sensor). The system collects the exhaust temperature before and after the catalyst, NOx concentration and O2 concentration before and after the catalyst, flue gas flow, urea tank level, etc., and calculates the denitrification rate and NOx emission conversion concentration.

The overall customization of SCR needs to provide full load power, exhaust temperature, exhaust gas composition to be treated, target emissions, drawings and pictures of the installation site, content of harmful substances, annual minimum temperature of the project site, and information on whether there is waste heat utilization.