Mechanism Analysis And Overall Scheme Design Of The Bag-type Dust Collecting Equipment In Thermal Power Plant

Today people pay more attention to environment protection. According to the State's new emission standard of air pollutants for thermal power plants, electric dust collecting equipment hasn't met the requirement for the boiler smoke and dust let-out concentration any more. Therefore, it's not only the need for power production to study and develop new-type dust collecting equipment that adapts to the coal-fired power plant, but also the need for environment protection. The topic is put forward in this situation. By studying the mechanism of dust collecting, the method of cleaning up dust and measures of security and protection in kinds of bag-type dust collecting equipment, a primary scheme of a simple-structured and convenient-maintain sectional reverse blow dust collecting equipment is designed for 50MW generate electricity sets. The structure of every part is also optimized. The proportional distribution of gas when enters equipment is one of the key factors for the efficient of dust collecting equipment and the life of bag. To design airflow boards for making airflow distribute proportionally, a deep research is made on airflow distribution in the entrance of the equipment, and Fluent software is used to simulate the airflow distribution before and after the airflow distribution board in the gas-in box. The results indicate that the airflow distribution is more proportional after putting the airflow-distribution board in the gas-in box. It provides a reliable foundation and best scheme for putting airflow boards in right place and choosing the size of aperture.