Corrosion resistant chimney inner wall steel inner cylinder for thermal power plant

Provided is a corrosion resistant chimney inner wall steel inner cylinder for a thermal power plant. The outermost layer is a concrete layer (1). The concrete layer is directly connected with a steel inner cylinder layer (2) inwards. A plurality of U-shaped stainless steel connecting corner braces (4) are arranged on the steel inner cylinder layer inwards. Rectangular stainless steel square pipe supports (5) are arranged on an enamel plate layer (3) outwards, wherein the enamel plate layer serves as a lining. The enamel plate layer is hung on the U-shaped stainless steel connecting corner braces of the steel inner cylinder layer in a sleeved mode through the rectangular stainless steel square pipe supports to be connected and then fixed. The corrosion resistant chimney inner wall steel inner cylinder is characterized in that a small cavity (8) is formed after the steel inner cylinder layer is connected with the enamel plate layer serving as the lining.