IMPROVING CLAUS SULFUR RECOVERY UNIT （改善克劳斯硫回收装置）.pdf

IMPROVING CLAUS SULFUR RECOVERY UNIT RELIABILITY THROUGH ENGINEERING DESIGN by Steve Fenderson GOAR, ALLISON, ASSOCIATES, INC. P.O. Box 131390 Tyler, Texas 75713 Preprint of Paper to be given at the BRIMSTONE ENGINEERING SULFUR RECOVERY SYMPOSIUM September 15-18, 1998 IMPROVING CLAUS SULFUR RECOVERY UNIT RELIABILITY THROUGH ENGINEERING DESIGN TABLE OF CONTENTS INTRODUCTION 1 DESIGN BASIS 2 SRU DESIGN 2 PIPING 2 MAJOR EQUIPMENT 4 INSTRUMENTATION 19 SUMMARY 25 INTRODUCTION In today’s sulfur recovery unit (SRU) operating environment, greater emphasis must be placed on operating reliability than ever before. Most environmental agencies are very reluctant to grant operating variances for conditions that would result in emission levels greater than permitted. Many companies are attempting to lengthen the time between scheduled maintenance shutdowns. Higher sulfur feedstocks and additional hydroprocessing have used any excess SRU capacity that may have been initially installed. These factors all contribute to the importance of overall SRU operating reliability. Gone are the days when the primary reason for having an SRU was to satisfy the permit questionnaire and when little emphasis was placed on how efficiently or how much of the time