Thread Content
Former domestic steam soot blowers, acoustic soot blowers, gas shock wave soot blowers, chemical injection systems； 1. Steam soot blower: Its working principle involves using steam or compressed air under certain pressure as the cleaning medium. A long, several-meter-long tubular cleaning gun that is retractable and rotatable is inserted into the boiler flue, thereby using steam or compressed air to remove the ash accumulated on the heated surfaces. The main drawback of this type of soot blower is its poor mechanical reliability and high energy consumption of the equipment itself. The moisture in steam can easily combine with sulfides and other substances to form corrosive agents, causing corrosion to the equipment. It is gradually facing elimination. 2. Acoustic soot blower: A method that utilizes the energy of acoustic fields to remove ash and slag accumulation on the surface of boiler heat exchangers; this type of soot blower features high power, long service life, no need for maintenance, and operates automatically. Acoustic soot blowers need to operate continuously; they require less energy and must be turned on at the same time as the equipment, operating in tandem. If there was no soot blower available earlier and dust has accumulated on the equipment, acoustic waves will be ineffective. 3. Shock wave soot blower: It primarily uses a combustible gas (acetylene, natural gas, gas; fuel misting can also be used) which is mixed with air in a certain ratio inside a mixing tank. Upon ignition, an explosion occurs, generating a shock wave at the front end of the nozzle. This shock wave is used to clean the heated surfaces. It is the most effective type of soot blower, but it is not safe to use. Shock wave soot blowers are a commonly used cleaning method at present, but the key to this technology lies in the setting of shock wave energy: too high a level can damage the equipment, while too low an level results in poor cleaning efficiency, requiring frequent adjustments to the ratio of gas to air. 4. Chemical dosing: A weakly alkaline liquid agent containing nitrates specifically designed for online cleaning of boilers. This agent is sprayed directly into the furnace using the proprietary spraying equipment of \"Netsurokou\", where it becomes atomized; then, along with the flue gas, it travels through the flues to clean all the heat-conducting surfaces of the equipment, including the furnace, superheater, economizer, air preheater, and electrostatic precipitator. The downside is that this medication has to be used continuously.