一、旋流式快速分离系统简介旋流式快速分离系统(简称“VQS系统”)其基本工作原理是利用高速旋流产生的离心力实现气、固的快速分离。随着催化裂化原料油日趋重质化、劣质化和裂化反应深度的不断增加,催化裂化沉降器内部、分馏塔下部等处结焦更加严重,对装置的安全生产、长周期运行构成了严重威胁。为了适应重油催化裂化,避免沉降器内结 First, the rapid separation of cyclonic system Brief introduction Cyclonic rapid separation system (referred to as “VQS system ”) The basic working principle is the use of high-speed cyclone centrifugal force to achieve gas and solid rapid separation. As catalytic cracking feedstocks become more and more heavy, poor quality and increasing cracking reaction depth, the coking in the FCCU settler and the lower part of the fractionation tower becomes more serious, posing a serious threat to the safe production and long-period operation of the device. In order to meet the heavy oil catalytic cracking, to avoid settlement within the settlement