10th International Aerosol Conference September 2 - September 7, 2018 America's Center Convention Complex St. Louis, Missouri, USA
Abstract View
Application of Wet Phase Transition Agglomerator for Synergistic Removal of Fine Particles and Sulfur Trioxide from Stationary Source Flue Gas
Houzhang Tan, Ruijie Cao, Renhui Ruan, Shengjie Bai, XUEBIN WANG, Yongle Du, Hexin Liu, Xi'an Jiaotong University, China
Abstract Number: 754 Working Group: Control and Mitigation
Abstract A novel technology termed Wet Phase Transition Agglomerator (WPTA) was developed, based on particle growth and agglomeration by heterogeneous condensation, Brownian diffusion, thermophoresis, diffusiophoresis and disturbed pipe flow. The further removal of fine particles and SO3 from flue gases downstream the wet flue gas desulfurization (WFGD) can be realized by the WPTA in coal-fired power plants.
The WPTA was commercially applied at a 100 MW coal-fired power station unit independently for the first time, after the lab- and pilot-scale experiments and industrial trial cooperating with a wet electrostatic precipitator. It was installed between the WFGD and chimney, and field measurements were conducted to evaluate its performance. The results indicated that the ultra-low emission of particle was realized by the WPTA, and it performed well on SO3 removal.
The removal efficiency of particles were 53.05% and 71.11%, respectively, at the boiler loads of 90% and 75%. The particle emission was kept below 3 mg/m3 by the WPTA. Although the concentration of SO3 was relatively low at the outlet of WFGD due to wet scrubbing, the WPTA could further remove the SO3 from flue gases. The removal efficiency of SO3 were 19.29% and 18.87%, respectively, at the boiler loads of 90% and 75%. The SO3 emission was kept below 2.5 mg/m3 under all measurement conditions.
Keywords: fine particle; SO3; growth; agglomeration; simultaneous removal