Cyclone separator and separation efficiency adjusting method thereof

Abstract

The invention discloses a cyclone separator and a separation efficiency adjusting method thereof. The method comprises a separator cylinder and an inlet flue. The separator cylinder is connected withthe inlet flue. A sliding partition wall is arranged at the joint of the inlet flue and the separator cylinder. A partition wall sealing layer is arranged among the sliding partition wall, the inlet flue and the separator cylinder. When the efficiency of the separator needs to be improved, the sliding partition wall moves towards the interior of the separator, the width of the inlet flue of the separator is decreased, the flue gas flow rate is increased, and the efficiency of the separator is improved. According to the operation project of a boiler, when the efficiency of the separator needs to be adjusted, the sliding partition wall at the eagle nose of the separator can be manually operated to move forwards or backwards during boiler operation, the efficiency of the separator is repeatedly adjusted, then, the bed temperature of a boiler is adjusted, the boiler efficiency is improved, NOx original exhaust is lowered, and refined adjustment of boiler operation is facilitated. Subwallsforming the sliding partition wall are made of pre-fabricated shaping refractory materials, the separator is under negative pressure during operation, after abrasion, replacement can be directly performed without furnace stop, the boiler maintenance cost is lowered, and the separator is safe and reliable.

Description

technical field [0001] The invention belongs to the technical field of circulating fluidized bed boilers, and in particular relates to a cyclone separator and a separation efficiency adjustment method thereof. Background technique [0002] The cyclone separator is one of the main equipments of the circulating fluidized bed (CFB) boiler, and the separation efficiency directly affects the operation status of the boiler. The higher the efficiency of the separator, the greater the amount of circulating ash in the furnace. The boiler can establish a good thermal cycle, prevent the bed temperature from being too high, reduce the original emission of NOx, and ensure the safe, efficient and low-period operation of the boiler. However, the efficiency of the separator is not as high as possible. When the efficiency of the separator is too high, the bed temperature of the boiler will be too low, which will seriously affect the efficiency of the boiler. There are many domestic cases whe...

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Problems solved by technology

The plastic remodeling of the flue depends more on engineering experience. Due to the complexity of the coal quality, the complexity of the boiler operating conditions and the cumulative error of the calculation, there are many cases of failure of the reconstruction, which leads to the need to stop the boiler and restore the separator The original size of the flue, huge economic loss

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