Fire extinguishing method of flash drying tower

Abstract

The invention discloses a fire extinguishing method of a flash drying tower. The fire extinguishing method is characterized by comprising the following steps: starting all fans in the flash drying tower, then opening an inspection manhole of an air pipe of the flash drying tower, and injecting fire fighting water from the manhole, wherein the fire fighting water is blown off and atomized under the action of a wind force, and is blown into the flash drying tower and the air pipe to extinguish fire. According to the fire extinguishing method, after all the original fans in the flash drying tower are started, fire fighting water is blown off and atomized to be as high as possible to extinguish fire at a high place, especially, the effect of extinguishing fire on a high bend of the air pipe is remarkable, the fire is thoroughly extinguished, and the fire extinguishing time is shortened to 1.5-2 hours from original 15-20 hours.

Description

technical field [0001] The invention relates to the technical field of fire extinguishing of large equipment, in particular to a fire extinguishing method of a flash drying tower. Background technique [0002] The drying medium of the flash drying tower generally adopts ambient air. After the ambient air passes through the air filter, it is blown into the steam heat exchanger by the fan to be heated. The heated hot air forms a cyclone with a certain flow rate and flow direction. The cyclone contacts and collides with the wet material from the fiber fluffing and deflagging machine, and starts a series of physical changes such as mass heat exchange and separation, so that the material is separated from the wet water contained in it, and the purpose of drying is achieved. In the flash drying process, the wet slurry is passed into the flash drying tower, where it is directly mixed with hot air for drying. The flash drying towers are large-scale equipment, especially in the moder...

AI Technical Summary

Problems solved by technology

In the event of a fire, among the existing similar flash drying equipment abroad, fire-fighting water is sprayed from the inspection manhole in the middle of the flash drying tower to extinguish the fire on the inner wall of the flash drying tower. In this way, the fire-fighting water It is impossible to reach the bend at the highest point of the air duct on the flash drying tower, so it is necessary to set up a frame inside the air duct to put out the fire, or use a spreader to work from the outside and destroy the insulation cotton of the air duct and then cut the pipe into the fire extinguishing (this kind of destruction tower The method of air duct has a great influence on the process, reduces the smoothness inside the air duct, and is easy to cause slurry), these measures are very difficult to deal with, time-consuming and laborious; the fire extinguishing time is long and it takes 15 to 20 hours to deal with it Completed, meet the conditions for restarting feeding