关键词: SINOALKY, 硫酸烷基化装置, 异丁烷损失, 冷剂泵, 管线振动, 屏蔽泵, 超声波流量, 低温脱水

Abstract:

It briefly introduces the characteristics and main commissioning steps of SINOALKY sulfuric acid alkylation unit independently developed by SINOPEC. The typical problems such as high isobutane loss, evacuation of refrigerant pump, high vibration of pipe and frequent failure of shield pump during the first commissioning of three sets of SINOALKY sulfuric acid alkylation units constructed and put into operation in recent years are summarized, and the causes of the problems are analyzed and countermeasures are proposed. According to the process and equipment characteristics of the unit, combined with the first start-up of three SINOALKY sulfuric acid alkylation units and other similar units, the importance of low-temperature dehydration before the introduction of sulfuric acid is analyzed, and the specific measures to ensure the dehydration effect are summarized; this paper summarizes the locations and time points of sulfuric acid and hydrocarbon leakage during commissioning, and puts forward countermeasures, which can provide reference for the future design, construction, safe commissioning and operation of domestic sulfuric acid alkylation unit.

Key words: SINOALKY, sulfuric acid alkylation unit, isobutane loss, refrigerant pump, vibration of pipe, shield pump, ultrasonic flow, low-temperature dehydration;