Synchronous sampling device for liquid drops and dust in smoke gas

Abstract

The invention relates to a synchronous sampling device for liquid drops and dust in smoke gas. According to the technical scheme, the outlet end of an impact tube (9) penetrates through an end portion in the vicinity of the big end of a liquid drop catcher housing (1); a sampling nozzle (10) is in threaded connection with the inlet end of the impact tube (9); a cover-like connecting piece (2) is fixed to the small end of the liquid drop catcher housing (1); the cover-like connecting piece (2) is in threaded connection with the inlet end of a particle catcher housing (3); a glass fiber filter cylinder (8) is arranged in the particle catcher housing (3); and the port of the small end of the liquid drop catcher housing (1) is located at the opening of the glass fiber filter cylinder (8). The outlet end of the particle catcher housing (3) is fixedly connected with the inlet end of a sampling pipe housing (5) through a left water stop pipe (4); a right water stop pipe (7) is fixed to the outlet end of the sampling pipe housing (5); and a water drain valve (6) is arranged at the lower part of the outlet end of the sampling pipe housing (5). The synchronous sampling device for liquid drops and dust in smoke gas is simple and compact in structure, convenient to mount and demount, good in operability, and capable of collecting liquid drops and dust in smoke gas simultaneously.

Description

technical field [0001] The invention belongs to the technical field of flue gas sampling devices. In particular, it relates to a synchronous sampling device for liquid droplets and dust in flue gas. Background technique [0002] At present, wet dust removal and wet desulfurization technologies such as limestone-gypsum method and ammonia desulfurization technology have been widely used. During the dust removal and desulfurization process, some liquid droplets and dust are entrained in the flue gas at the outlet of the mist eliminator. The content of liquid droplets is the basis for judging the effect of the demister, and is an important indicator for system performance assessment. [0003] The existing sampling device for flue gas at the outlet of the mist eliminator samples liquid droplets or particulate matter alone, and cannot simultaneously sample liquid droplets and dust. The water vapor in the flue gas at the outlet of the demister is basically saturated. During sampl...

AI Technical Summary

Problems solved by technology

[0003] The existing sampling device for flue gas at the outlet of the mist eliminator samples liquid droplets or particulate matter alone, and cannot simultaneously sample liquid droplets and dust

The water vapor in the flue gas at the outlet of the demister is basically saturated. During sampling, the flue gas is easy to condense into water in the sampling pipe, which will block the subsequent rubber pipe, and the condensed water in the sampling pipe will easily flow into the dryer and back into the particles. Traps or droplet traps, causing frequent desiccant changes and inaccurate sampling

The existing smoke and dust sampling pipe generally has an electric heating device to prevent water vapor from condensing in the sampling pipe, but the heating device is prone to failure, which is difficult to achieve in practical applications.

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