Experimental study on application of micro-tube bundle demister in thermal power plant
In order to verify the comprehensive performance of the micro-tube bundle demister under the operating conditions of power plants,a micro-tube bundle demister test device was installed in parallel with the fourth-stage tube bundle demister of the secondary desulfurization tower of the coal-fired power plant.The performance of the micro-tube bundle demister was verified by comparative tests.During the test,the airflow resistance of the inlet and outlet of the micro-tube bundle demister was one fourth of that of the fourth-stage tube bundle demister.It was attempted to use the conductivity of condensate water in the continuous sampling pipe as an indirect index of the droplet concentration at the outlet of the demister,the concentration of droplets at the outlet of the micro-tube bundle demister was about half that of the fourth-stage tube bundle demister.The charge method particle concentration meter measured that the concentration of particles at the outlet of the micro-tube bundle demister was one tenth of that of the fourth-stage tube bundle demister,indicating that the particle separation performance of the micro-tube bundle demister was doubled improved.After 5 months of operation,only a small amount of dirt was found on the pipe wall near to the outlet of the micro-tube bundle demister,and there was no pollution on the diver-sion blades and surroundings.The results show that the micro-tubes demister have prominent advantages in energy conservation and e-mission reduction,and suit for long-term use in power plants.
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