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In the petrochemical industry, chemical industry, energy industry and other production areas in the heat exchanger is a very common application of heat exchange equipment, according to statistics, investment in medium-sized enterprises to build, heat transfer equipment purchase costs of the total investment of20%-40%, especially in the oil refining chemical industry equipment in the heat exchanger of the total number of40%. As the floating head heat exchanger tubes can be taken out, easy to clean, the temperature difference in the course of bundle without shell expansion constraints, will not produce thermal stress, etc., in a chemical plant in the wide range of applications, but in the course of pressure inside and outside the tube in different media, media corrosion, erosion, temperature, welding defects and damage to sealing materials, making the heat exchanger failures continue, affecting the normal operation of production equipment and factory cost of the floating head heat exchanger for failure and failure analysis, develop a reasonable life extension methods to ensure that equipment is running has become a long-period production can not be ignored.The purpose of this study are:to collect site run by the floating head heat exchanger fails in the background material, equipment failure caused the failure of reason, the failure site, failure to analyze the causes, find the reasons to develop a reasonable improvement program to achieve long-term operation of equipment the target.Innovation of this paper and results is:the floating head heat exchanger during operation failures for system failure analysis; the use of more comprehensive failure analysis system, a reasonable method of life extension technology, process optimization floating head heat exchanger system, a reasonable optimization improvement program for the floating head heat exchanger to create better operating conditions, reduce equipment failure rates, long-term operation to protect the device.
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