PARTICULATE AND PROCESS GAS STREAM SAMPLER

摘要

A sampling system (10) samples particulate material in a high-temperature, high-pressure gas stream (20) flowing in process pipe (22). A sampling device (12) comprising an alumina lined activated bauxite alkali vapor collector (16) and a threadless sacrificial connector containing cyclone separator (14) is inserted into stream (20) via a pipe flange (24) connected to block-and-bleed valves (52, 54). (In alternative embodiments instead of a cyclone separator (14) a cascade impactor (240) with integrally spaced and aligned jet plates (282) having collection substrates (284) may be used). Support structure (30) supports a stepper motor (32) driving screw actuator (34) carrying draw yode (38) is driven along linear bearing rail (40) by engagement with screw actuator (34). Draw yoke (38) engages sampling device carrying probe (42) so as to mobe in axial direction (A). Probe rotator (44) mounted to carriage (39) can be controlled or monitored by local controller/monitor (46) or remote one (48) which can also monitor and control axial movement production.