摘要
50年代,国内硫酸装置中气体换热器的设计,主要参照苏联规范,传热系数仅9.9～12.8W/(m^2·K)。70年代中,根据国外介绍,开始了新型高效换热器的设计,提高了传热系数。作者认为,高效换热器应具备下列条件:1.在低压降下具有高传热系数;2.减少壳程滞流区;3.在结构上应能防止或减轻腐蚀。
In the 1950s, the gas heat exchanger for domestic sulphuric acid plant was designed according to the U. S. S. R. specification and only had a heat transfer coefficient as low as 9.9~12.8W/(m2.K). Then in the mid-1970s, new types of exchangers with higher transfer coefficients began to be developed on the basis of foreign experience. The author holds that a high-efficiency heat exchanger should be characterized by (a) high heat transfer coefficient and low pressure drop, (b)minimized dead zone of flow, and (c)rational configuration to prevent or retard corrosion.
出处
《硫酸工业》
CAS
1990年第1期26-29,64,共4页
Sulphuric Acid Industry
