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| Design and Research of Flow Rate Control Device of Tube Bundle Demister Based on Ceramic Industry Desulfurization Tower |
| Received:July 15, 2020 Revised:August 16, 2020 |
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| DOI：10.7643/issn.1672-9242.2021.02.005 |
| KeyWord:ceramic industry tube bundle demister flow rate control device flue gas operating condition fluctuation |
| Author | Institution |
| LI Wei-jiang |
Foshan Huaqing Zhiye Environmental Protection Technology Co., Ltd, Foshan , China |
| HE Jian-lin |
Department of Electrical and Mechanical Engineering, Guangdong Polytechnic of Environmental Protection Engineering, Foshan ,China |
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| Abstract: |
| According to the “ultra-clean emission” standard of flue gas in ceramic industry (the concentration of particulate matter is less than 5 mg/Nm3), innovatively design the structure of flow rate control device of tube bundle demister. Several sets of regulating valves are uniformly arranged at the outlet of the flow rate control device of tube bundle demister in desulfurization tower, according to the actual working condition, the quantity of the valve opening and closing is controlled by adjusting the adjusting rod extending outside the tower, and then the total quantity of the flue gas passing through the tube bundle demister is controlled, so that the flow rate in the tube of the single tube bundle demister is within the design range. During operation, the whole train can be opened and closed, and the single train can control the maximum flue gas volume up to 5.7×104 m3/h. When the mass concentration of particulate matter at the inlet of the desulfurization tower is less than 50 mg/m3, the flue gas flow rate in the inner tube of the tube bundle demister is less than 5 m/s, and the mass concentration of particulate matter is 13~15 mg/m3. When the flue gas flow rate in the inner tube is 5~7 m/s, the mass concentration of particulate matter is 7~10 mg/m3. The flow rate control device can ensure the flow rate in the tube bundle demister not lower than the design value, and can avoid the influence of the efficiency of the demister caused by the fluctuation of the flue gas volume in the working condition of the spray tower. |
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