In recent years, with the rapid development of economy, metallurgical steelmaking electric furnaces and raw coal-fueled boilers have increased a lot. The atmospheric pollutants discharged by these furnaces cause great harm to the surrounding environment. Therefore, the technology of removing particulate matter from dust gas to reduce its emission to the atmosphere is becoming more and more important
In recent years, with the rapid development of economy, metallurgical steelmaking electric furnaces and raw coal-fueled boilers have increased a lot. The atmospheric pollutants discharged by these furnaces cause great harm to the surrounding environment. Therefore, the technology of removing particulate matter from dust gas to reduce its emission to the atmosphere is becoming more and more important。
Dust removal methods on the market are: biological nano membrane clouds of dust suppression wet cyclone dust collecting gravity inertia, widespread investment low energy consumption high collection coefficient of faults, today to introduce new environmental dust removal equipment of the air duct heater air duct heaters, also called air heater, USES a combined way of connection, with stainless steel heating tube as the heating element with carbon steel or stainless steel stents duct heaters do the dual protection, safety performance is good also installed thermostat fuse, which can be used to control the air duct air temperature overheating and work without wind, to ensure foolproof Dust containing gas is imported from the inlet to the air duct heater, forming a downward rotating outer cyclone. The dust suspended in the outer cyclone moves to the wall of the filter under the action of centrifugal force, and rotates to the lower part of the dust collector with external rotation. The purified gas is discharged from the dust hole to form a rising inner cyclone and is discharged through the exhaust pipe。
Such environmental protection duct heater include: cylinder for hollow cylindrical in shape, is set in one side of the cylinder into the duct and the other end of the cylinder set the outlet, into the duct connected with centrifugal fan, into the duct includes the first filter tubes and the second filter tube, cylinder body with insulation layer, thermal insulation layer is set inside have a heating element, heating elements including heating pipe bracket and a number of heating pipe, heating pipe bracket set within the insulation layer, and one end of the heating pipe bracket setting on the outside of the cylinder, the other end of the heating pipe bracket set in the cylinder body, heating tube activity Settings on the heating pipe bracket, cylinder outside is wrapped with insulating, outlet and cylinder are set up There is a temperature measuring element, and a protective box is arranged on the outside of the barrel, and the protective box is connected with the heating tube bracket arranged on the outside of the barrel。
Advantages of environmental dust removal gas duct heater: 1 long life: fast heating rate, reduce maintenance time, will not happen the gas temperature controlled by advanced and backward situation and make the temperature control drift, is suitable for automatic control of 2 high temperature: can make the gas heated to very high temperature, four hundred and fifty, the shell temperature of only 50 or so 3 high thermal efficiency, environmental above 0.9 4: gas clean, good environment protection 5 mechanical performance is good, because it has a heating element for special alloy materials, therefore Under the impact of high pressure air flow, it has better mechanical properties and strength than all heating elements, which is more advantageous for the system and accessory experiments requiring continuous gas heating for a long time。
