In the cement production, there are basically two areas where we support our customers:
- Optimization of combustion processes
- Compliance with environmental constraints
Optimization of Combustion Processes
There are two options for the optimization:
The first approach is to monitor the furnace atmosphere on the pre-heater (klin inlet process).
The loaded raw materials are conveyed through the rotary klint while the hot process air is applied in the opposite direction to remove the CO2.
The second approach is to monitor the rotary klin atmosphere during the clinker production.
A good measuring point is the klint exit, where it is convenient to measure the air inlets between preheasting inlet and outlet.
Typically CO2, CO, O2 and NO are monitored.
The goal, as in all combustions processes is to balance the triangel of ignition, fuel and air in relation to the load.
Our recommendation for the control and optimization of the combustion process is …
Compliance with Environmental Constraints
The processes in the cement production cause emission which are not harmless to humans and nature.
The type and quantiy of these environmental polluting emissions depends on the input fuels and type of applied process.
Often in the rotary clints critical industrial waste is dissposed.
Used tires and sewage sludge are added to reduce the costs on the primary fuel gas or oil.
If these secondary fuels are used metalls, dioxins, furans and hydrogen chlorides/fluorides are often monitored, additionally to dust, sulphur dioxide, carbon dioxides and nitrogen oxides.
Such a monitoring systems is not only installed to be in compliance with environmental regualtions. The monitoring systems also provides valuable information for the control of the production system.
For a reliable and continuous function it is mandatory that not only first class components are used within the whole systems, but also a qualified maintenance is performed and for the worst case that support and spare parts are immediately available.
For more about fully integrated Continuous Emission Monitoring Systems (CEMS) by ASE: