Innovation
In addition to the regular wet scrubbing technology, Tenova developed the Dry Scrubber offgas cleaning technology. The Tenova Pyromet patented dry scrubbing process & method is an alternative solution to wet scrubbing systems for cleaning the furnace off gases from furnace processes, where low or high volatile reductants are used. It uses a separation technology, whereby solids are collected and separated from the process gas, by passing it through high temperature filtration elements that are periodically cleaned by using an inert gas.
The resultant cleaned CO gas average solid gas content is below 5 mg/Nm3and is suitable for direct use used in any power generation or heating system.
If high volatile reductants are used, the hot gas with tar in vapor form passes through the separation section for cleaning, before entering a suitable tar removal system, prior to being used in any power generation or heating systems. The collected tars from the tar removal systems can be used as a fuel or can safely be disposed of.