XINLI BOILER

What are the two dust removal methods for biomass boiler dust collectors

25 Nov, 2021

　　There are two types of dust removal methods for biomass boiler dust collectors: cyclone dust collector and bag dust collector. Cyclone dust collectors are widely used to separate solid and liquid particles from air streams. According to the different cleaning methods, the bag filter can be divided into three types: mechanical vibration, air flow reverse blowing and pulse blowing.

　　Mechanical vibration cleaning is often used in dust collectors with small air volume. The airflow back-blowing ash cleaning effect is better than mechanical vibration, and the allowable filtering speed is lower, so the equipment is larger in scale, the pressure loss of the equipment is larger, and the area is larger. The pulse jet has strong dust cleaning ability and good effect. It can allow higher filtration speed, the equipment pressure loss is small, the floor space is small, and the energy consumption is low.

　　The processing technology of the biomass dust collector is to treat the flue gas generated in the production process of each boiler separately. The flue gas produced by the boiler. The dust enters the cyclone dust collector through the dust suction pipe. At this time, the large particles in the dust are separated under the action of the centrifugal force of the cyclone dust collector, the large dust particles are discharged by the cyclone dust collector, and the fine particles enter the bag filter. Filtered by the filter bag, the dust adhering to the surface of the cloth bag is concentrated in the ash hopper of the dust collector through pulse blowing, and then recycled or utilized by the feeding controller. The clean air processed by the bag filter is discharged into the atmosphere through the chimney through the fan. The dust-containing flue gas of the boiler is treated by the bag filter, which can reduce the pollution of the flue dust to the surrounding environment and achieve the purpose of clean production.

　　Features of Biomass Boiler Dust Collector:

　　1. Application of offline maintenance skills: The non-stop maintenance function of the dust collector has been completed. It is ensured that the operation of the boiler will not be affected by the factor of the dust collector.

　　2. Low-pressure injection skills: The use of low-pressure, high-efficiency and long-life diaphragm electromagnetic pulse valves, coupled with the unique planning and processing techniques of the injection pipe, has completely changed the dust removal method of the boiler dust collector.

　　3. Application of inspection and monitoring skills: For the application characteristics of boiler dust collectors, advanced online inspection and monitoring equipment such as flue gas temperature, humidity, dust collector operating pressure inspection, material level inspection, and operating equipment defect inspection are set up.

　　Biomass boiler dust collector is composed of dust bag components, diversion device, pulse injection system, ash discharge system, control system, offline protection system, cabinet, etc. The dust-containing gas enters each unit room through the diversion tube. Under the action of the diversion device, the large particles of dust fall directly into the ash hopper after separation, and the rest of the dust enters the filter area of ​​each warehouse evenly with the airflow. The clean gas after filtration is filtered. The bag is discharged through the upper box, the poppet, and the exhaust pipe.

　　As the filtering conditions progress, when the dust on the surface of the filter bag reaches a certain thickness, the ash cleaning control device (differential pressure or timing, manual control) closes the poppet valve according to the set program, controls the current unit to be offline, and opens the electromagnetic pulse valve Spray to shake off the dust on the filter bag. The dust falling into the ash hopper is discharged through the ash unloading valve and sent out by the ash conveying system.