Thanks Montemayor, you're a God. The problem in case you have figured it out is that the shell or the steel chamber is corroding rapidly due to the high heat,water/steam saturation, and various chemicals in the flue gases along with the brine content of the water spray.
We have a challenge to build a 15'dia by 60' flue gas chamber of steel(?) and provide a liner (refractory) perhaps ceramic ( or cast in place) to handle a variety of waste products (gases and particulate at the top 2400F and cooling by water spray to 500F at the bottom.
We have a requirement for a refractory material to line a steel spray dryer chamber 16'Dia X 32' High. Internal temp is 2400 degrees F. at the top and water is sprayed in from 2" nozzles at the top. The temp drops to 600F. at the bottom and the flue gases exit through a ducted fan. Severe...