According to the problems of the reovery system of waste heat from flue gas, a waste boiler with a radial eccentric heat pipe as the heat transfer unit is designed, which is applicable to poor working conditions containing acid gas, dust and others. The radial eccentric heat pipe technology and heat exchanger are expounded and analyzed, and key points of radial eccentric heat pipe waste heat boiler technology are analyzed in the design conluding safety length ratio of the radial eccentric is derived. In practical engineering, the radial eccentric heat pipe waste heat boiler is investigated. The results show that the eccentric radial heat pipe waste heat boiler has higher performance and the waste heat recovery efficiency is up to 92.5%. Also low temperature corrosion is avoided, no evidence impacting on normal production has been found during the past three years. More over, the expected service life of heat transfer tube can reach to five years.