Henan Zhengzhou Mining Machinery CO.Ltd |
Verified Suppliers
|
|
Rotary Kiln Vertical Preheater / Rotary Kiln Preheater Manufacturer
Vertical Preheater Introduction:
Vertical Preheater is one host device of the active lime
production, and its main function is to sent limestone from the
upper part to the body of preheater, while using high-temperature
exhaust gas (950--1100 degrees Celsius) discharged from the
calcinations kiln to make heat exchange, and the preheat the
materials evenly into 900 degrees Celsius in the preheater. After
preheating, there is 30% CaCO3 will decompose and then pushed into
rotary kiln for burning by the hydraulic push rod. So such a
calcinations process not only shorten the time of limestone burning
in the kiln, but also get a high degree of the active lime.
Our Vertical Preheater Advantages :
1. Push head and main parts of body is made of heat resistance
steel, so it can work in 1000~1100℃ high temperature, and have long
operation life.
2. Effectively recycle heating energy in waste gas from kiln inlet,
to insure the material is preheated equally and reach to preheating
temperature.
3. Recycle the heat energy in waste air that discharge from kiln
tail effective, increase utilization ratio of fuel, at the same
time, it’s benefit to dedust;
4. The vertical preheater is used in calcination system, the length
of rotary kiln will be shorten, to reduce the heat loss on the
surface of rotary kiln and floor space;
5. With good combined revenues, the capacity will be increased 30%,
thermal efficiency will be increased 40% after use vertical
preheater.
Vertical Preheater Working Principle:
The Working Principle Of preheater: According to the place of
Preheater in rotary kiln system, and negative pressure working
principle of Preheater. Heat emission is heat convective, the
material and air is convection movement. When the raw materials
feeding into the preheater, under the negative pressure condition,
to prevent cold air into the preheater, the inlet of raw materials
must take effective seal. This is to ensure the effective use of
heat and material preheating effect. The standard of preheating
quality in the preheater, is the feeding room's temperature which
is in the bottom of preheater. Kiln temperature is: Detected by
thermocouple in the side wall of feeding room, including the flame
radiation and air temperature. It reflects the firing temperature
when feed into kiln, but also the degree of feedback the final
warm-up temperature of the material. To Preheater, Truly reflects
the effective temperature of the material is outlet temperature of
the Preheater top. Temperature control on this point is more
important than the end of the rotary kiln temperature control.
Within preheater, materials after preheating and pre-decomposition,
pushing out from Preheater to Rotary kiln by hydraulic plunger
device.
Technical Parameters:
Model | No. of push rod | Body height(m) | Capacity(t/d) | Feeding size(mm) |
YRQ-04 | 4 | 4 | 200 | 10~50 |
YRQ-06 | 6 | 4 | 300 | 10~50 |
YRQ-08 | 8 | 4.4 | 400 | 10~50 |
YRQ-12 | 12 | 4.4 | 600 | 10~50 |