Sampling method for boiler furnace flue gas

• Main Authors: LU YI, CHEN DAOXIANG, CHEN TAO, LAN DEZHI, CHEN YU, ZENG ZHONGWANG, WANG YIN, XUE JIANCHENG, LIN APING, CHEN XIANCHUN
• Format: Patent
• Language: English
• Published: 30.12.2015
• Subjects: BLASTING; COMBUSTION APPARATUS; COMBUSTION PROCESSES; FLUES; HEATING; LIGHTING; MECHANICAL ENGINEERING; REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTIONRESIDUES; WEAPONS

The invention relates to a sampling method for boiler furnace flue gas. The method comprises the following steps that 1, a long sampling hole of which the two ends are in a circular shape are formed in a fin of water wall tubes; 2, a cone-shaped box is arranged at the long sampling hole and then welded on the fin after a segment of the top end of the cone-shaped box is cut, and the interior of the cone-shaped box is filled with an elastic aluminum silicate high temperature resistance material; 3, two support frames are symmetrically and vertically arranged at the two sides of the long sampling hole respectively and used for supporting the cone-shaped box, one end of each support frame is welded on the waist of the cone-shaped box, and the other end of each support frame is welded on the fin; 4, when sampling is performed, the aluminum silicate high temperature resistance material filled in the cone-shaped box is taken out and replaced by an aluminum silicate high temperature resistance material with a circular through hole, and the circular through hole is vertically formed over the long sampling hole and used for allowing a sampling tube to stretch in for flue gas sampling. According to the sampling method for the boiler furnace flue gas, the boiler furnace flue gas is sampled by adopting the simple and practicable method.