一、问题的提出我厂催化裂化装置再生器烟气氧量分析仪采样系统,原安装管路如图一所示。取样点(三个)设在双动滑阀之前,其标高为39.7米,采样管线选用φ27×3不锈钢管。由于采样气中催化剂粉沫含量大,采样管线长(全长40多米)部分管段又是水平敷设,经常造成催化剂粉沫堵塞采样导管的故障。我 First, the issue put forward I plant catalytic cracking unit regenerator flue gas oxygen analyzer sampling system, the original installation of pipe shown in Figure 1. Sampling points (three) located in front of double-acting slide valve, the elevation of 39.7 meters, the sampling line selection φ27 × 3 stainless steel tube. Due to the large amount of catalyst powder in the sample gas, the length of the sampling line (more than 40 meters in length) is partially laid horizontally, often resulting in the failure of the catalyst powder plugging the sampling catheter. I