How to do a good job in the temperature and heat of the rotary kiln

Do a good job of the temperature and heat of the rotary kiln, is a relatively difficult operation is very important work, in the production, the flame of the rotary kiln must be stable, in order to avoid the occurrence of steep peak temperature, and the stable rotary kiln skin is formed in the case of a relatively long flame, so that the use cycle of the refractory bricks of the firing belt can be protected. In order to make the results better, the measures we can take are:

For swirling air, we can transport it from the inner tube where pulverized coal is transported and the air is transported to the outer tube. A small part of the swirl will be formed on the inner side of the pulverized coal tube, and the steep peak temperature will be formed, and there will be a swirl formation on the outside of the pulverized coal tube, and the intensity is relatively uniform, and the volatile matter of the fuel in the rotary kiln and the corresponding peak temperature are also very uniform.

The large axial wind velocity of the rotary kiln is increased, and a smoke hood is added at the front end of the nozzle of the shaft. When the wind speed is high, the flame will be stretched. The establishment of the smoke hood can reduce the lateral diffusion of the flame in the rotary kiln, and the corresponding flame will be relatively uniform.

If the swirl angle and the injection velocity and axial velocity in the rotary kiln are adjusted accordingly, the shape of the flame will also be changed accordingly.

In the process of designing the rotary kiln burner, there are two types of jets, and both can make the rotary kiln produce air flow, and there is an internal backflow in the center of the flame, and there will be a large backflow outside the flame. The two types of reflux are parallel jets with circular nozzles using the central air and axial air or circular jets using annular jets in the outermost layer. Moreover, these two reflux methods will have a certain effect on the uniform volatilization of volatiles in the pulverized coal in the rotary kiln, and can also slow down the peak steep temperature and stabilize the flame.

The temperature of the rotary kiln The kiln flame high temperature temperature measurement and detection device.

Reactors, rotary kilns, hot blast furnaces and other kilns are widely used in metallurgy, building materials and other industries, and it can complete different process operations such as drying, roasting and volatilization of materials. With the different processes of the industry, the types of materials, heating methods, fuels, flame temperatures, negative pressure control conditions in the kiln are also very different, but in most cases temperature control is required, so the temperature in the kiln is a key parameter, which directly affects the output, quality and energy consumption of the product.

How many degrees? Did you measure?

The reason may be that the refractory material of the calcined belt is damaged, resulting in excessive temperature.

Bad negative pressure is also an important reason, the flame can not be evenly distributed throughout the kiln, resulting in high local temperature, the position adjustment of the burner is not standard.

In addition, do the indicators of pulverized coal meet the standards? The combustion value of water volatiles is fixed carbon....There are many reasons for the tempering of the cool kiln, one of which is that the amount of coal injection is too much, because the temperature can not be reached, the pulverized coal can not be fully combusted, the low temperature leads to the induction of air can not be increased, and the induced air can not reach the oxygen content can not be reached, and it cannot be fully combusted....

There are many other reasons, so I won't go into them all for now. Let's check them one by one! If you think it helps, please give it a thumbs up!

Summary. Dear, we are glad to answer the question that the rotary kiln needs to be gradually heated up during the heating process to avoid cracking due to excessive thermal stress of the equipment due to too fast heating. In general, rotary kilns need to be preheated at a lower temperature and then gradually heated up to the process temperature.

The specific heating process and heating rate will vary depending on the production process and equipment model. 

3.Can the rotary kiln be raised directly to the process temperature? (15 points) dear, I am glad to answer for you that the rotary kiln needs to be gradually heated up in the process of heating up, so as to avoid problems such as cracking due to excessive thermal stress of the equipment caused by excessive heating up.

In general, the rotary kiln needs to be preheated at a lower temperature and then gradually heated up to the process temperature impulse. The specific heating process and heating rate will vary depending on the production process and equipment model. 

Dear, I'm glad to answer no. Rotary kilns need to go through a slow heating process to avoid cracking the kiln body or other problems due to the rapid temperature rise. When the temperature inside the kiln body is raised, it is necessary to gradually increase the amount of burning high acacia material and the amount of air supplied to ensure that the temperature in the kiln rises uniformly, and maintain the appropriate oxygen concentration to avoid incomplete combustion.

Therefore, the heating process of the rotary kiln needs to be strictly controlled, and the quality and safety of the production are ensured. 

Summary. The results have been queried for you; Hello dear, the rotary kiln cannot be directly raised to the process temperature, and needs to be preheated and heated up. The preheating stage is mainly to volatilize the water and organic matter in the kiln to avoid the danger of ** at high temperature.

In the heating stage, it is necessary to control the temperature rise and fall speed to avoid deformation or burnout of the kiln body due to too fast or too slow. At the same time, it is also necessary to carry out different temperature control and insulation according to the requirements of the production process to ensure product quality. Reminder:

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3.Can the rotary kiln be raised directly to the process temperature? (15 points) have already found the results for you; Hello dear, the rotary kiln cannot be directly raised to the process temperature, and the preheating and heating process needs to be carried out.

The preheating stage is mainly to volatilize the water and organic matter in the kiln to avoid the danger of ** at high temperature. In the heating stage, it is necessary to control the temperature rise and fall speed to avoid deformation or burnout of the kiln body due to too fast or too slow. At the same time, it is also necessary to carry out different temperature control and maintain the wide ear temperature according to the requirements of the production process to ensure the quality of the product.

At. What is the emergency plan for the sudden power failure of the rotary kiln under high temperature.

The results have been queried for you; The sudden power failure of the rotary kiln in the high temperature state may cause the accumulation of residual materials in the kiln body in the high temperature state, resulting in high temperature thermal stress of the kiln wall, kiln wheel and mechanical transmission system, which may lead to serious accidents. Therefore, it is necessary to take emergency measures in time to prevent accidents. The following are possible contingency plans:

1.First of all, the power supply should be cut off immediately to stop the rotation of the kiln body. Before shutting down, it is necessary to turn off the preheater, burner and other related equipment to prevent safety accidents.

2.For the residual materials accumulated in the wide spike of the kiln body, it is necessary to clean up in time after the shutdown to prevent it from continuing to accumulate in the high temperature state and produce high temperature thermal stress. 3.

Check the condition of the kiln body, kiln wheel and mechanical transmission system. If a problem is found, it should be shut down immediately for repair or replacement of damaged parts. 4.

Understand the cause of the accident and take appropriate measures to avoid the recurrence of similar accidents. For example, equipment maintenance can be strengthened, equipment operation status can be checked regularly, and aging equipment parts can be replaced in time. During the implementation of the emergency plan, it is necessary to remain calm and take effective measures in a timely manner to ensure the safety of personnel and equipment.

Dear, hello, I am glad to answer for you, the calculation method of the center temperature of the rotary kiln A: The temperature in the cylinder of the rotary kiln is higher than the firing zone, the maximum temperature of the air flow can reach 2100, and the temperature of the calcined clinker is between 1350 and 1650. The surface temperature of the fire brick layer with good kiln skin protection is between 600 700, when the kiln skin falls off, the inner surface temperature of the refractory brick layer can reach 1300 1400, when the thickness of the good refractory brick layer is 200mm, the thermal conductivity of different types or varieties of refractory bricks is also different.

With the extension of the use time of the kiln lining, the inner surface of the refractory brick will be abrasive and damaged, making it thin, which has a great impact on the surface temperature of the kiln cylinder. In addition, when 40mm thick refractory mud and pads are used to build fire bricks with 3mm thick ceramic fiber felt, it also has a certain impact on the outer surface temperature of the kiln barrel. The difference in the surface temperature of the kiln cylinder at the installation site of the rotary kiln equipment can not only reflect the performance of different varieties of kiln lining, kiln lining damage and masonry method, but also reflect the state of the kiln skin.

Therefore, the infrared scanning detector of the temperature of the rotary kiln cylinder is now set up to detect the surface temperature of the kiln cylinder, which plays an important role in ensuring the high-quality, high-yield, safe and stable long-term operation of the rotary kiln. In order to avoid too many emergency kiln shutdowns, the outer surface temperature of the rotary kiln is set to 400, and the infrared detector of the barrel temperature of the rotary kiln at home and abroad is set and controlled in this way. That is to say, in the operation of the rotary kiln equipment, as long as the surface temperature of the kiln body does not exceed 400, there is no need to stop the kiln urgently, where it should be noted that the infrared thermometer measures the temperature of the outer surface of the kiln cylinder, and the inner surface temperature in contact with the refractory brick is generally about 5 10 higher.

The temperature difference between the inner and outer surfaces of the kiln cylinder is related to the variety of refractory bricks, that is, the larger the thermal conductivity of the fire bricks, the higher the temperature of the inner surface of the cylinder, the greater the temperature difference of the outer surface of the cylinder. In order to ensure production safety, the operating temperature of the kiln surface can be controlled within 370, and once it exceeds 370, it will be adjusted accordingly to prevent unnecessary losses caused by the "red kiln".

How should you look at the decomposition temperature of the rotary kiln, hello! The carbon rotary kiln is called "normal fire", which is the appropriate firing temperature. Generally speaking, "normal fire" has the following characteristics in a rotary kiln:

The flame in the kiln is shining, the shape is complete, stable and powerful, and there is a certain length. The material is slightly white, the material at the fire point rolls flexibly, the clinker is fine and uniform, and there is a certain vertical weight. The "black shadow" is stable at a certain position, and the boundary between the high temperature zone and the "black shadow" is not very obvious.

The color of the kiln skin is basically the same as the color of the material. The so-called "fire" is that the firing temperature is too high. Generally speaking, the flame is white and dazzling during the "big fire", and the material at the fire point is higher with the kiln wall of the rotary kiln, the tumbling is not flexible enough, and the clinker is coarse and sometimes even agglomerates.

If the fire is too large, the materials of the firing belt will be sintered into a group, and they cannot roll over with the wall of the rotary kiln, forming a "flow fire", which will seriously affect the rotary kiln skin and lining. The so-called "desertion fire" means that the firing temperature is too low. In the case of a "small fire", the flame turns red, the "black shadow" moves to the kiln head, and in severe cases, the raw meal in the back rushes to the front like water.

Due to the difference in the color discrimination ability of the fire watcher and the color of the fire goggle, there will be a difference in the judgment of the size of the fire, so the fire goggle with the same depth should be used. At the same time, different fire colors should be controlled according to the different refractory degrees of materials to prevent adverse consequences. Hope it helps!

Summary. Hello, I am glad to answer your question How to adjust the fuel in the process of rotary kiln insulation The answer to your question is: 1. Adjust the color of the combustion flame and the temperature of the combustion belt for the flame color

When ignition, the color needs to be controlled to dark red or light yellow; When the kiln skin is removed: it needs to be controlled in light yellow and white; Under normal operation: it needs to be controlled to be white or white shiny.

The color of the flame can reflect the temperature of the firing zone, and if the temperature is low, the internal wind can be appropriately increased; If the temperature is on the high side, the internal wind should be reduced.

Hello, I am glad to answer your question How to adjust the fuel in the process of rotary kiln insulation The answer to your question is: 1. Adjust the color of the flame and the temperature of the combustion belt according to the combustion and Naena flame For the flame color: when ignition, the color needs to be controlled to be dark red or light yellow; When the kiln skin is done:

It needs to be controlled in light yellow and white; Under normal operation: it needs to be controlled to be white or white shiny. The color of the flame can reflect the temperature of the firing zone, and if the temperature is low, the internal wind can be appropriately increased; If the temperature is on the high side, the internal wind should be reduced.

2. Adjust according to the situation of the kiln skin - generally speaking, the thickness of the normal kiln skin is 200-300mm, the surface is smooth, the length of the main kiln skin is 13-18m, and the length of the secondary kiln skin is 18-20m. 3. Make adjustments according to the granulation of materials in the kiln, if the granulation in the kiln is 40mm, and the firing belt material is sticky, it means that the temperature of the annihilation line is high, and the external wind should be increased to elongate the flame; On the contrary, increase the internal air and increase the firing temperature, but it is necessary to pay attention to the situation of the firing belt lining.

4. Adjust the proportion of internal and external winds, and the internal wind is to destroy the cyclone wind, making the flame shorter and thicker; The external wind is an axial wind, which makes the flame thinner and longer. It is recommended that users adjust the nuclear line cautiously according to the specific widening temperature and wind direction.

What does it mean when a rotary kiln is heated to 1000 degrees?

Rotary kiln heating 1000 degrees is a process of firing ceramics or cement. A rotary kiln is a device used to heat an object, it can place the object inside and heat the object to the desired temperature by rotating.

The process of heating 1000 degrees in a rotary kiln.

The process of heating 1000 degrees in a rotary kiln can be divided into several steps. First of all, the object is prepared and placed inside the rotary kiln. Then, start the rotary kiln and make it rotate. The heating unit starts to heat up and gradually increases the temperature until it reaches 1000 degrees.

During the heating process of a rotary kiln, the temperature and speed need to be controlled to ensure that the object is not affected by overheating or underheating. In the case of brittle materials such as ceramics, it is also necessary to adjust the heating rate to prevent the object from chipping.

Application of rotary kiln heating 1000 degrees.

The rotary kiln is widely used to heat 1000 degrees. In the manufacture of ceramics and cement, leather chains are required to use rotary kilns to heat and fire objects to complete their production process.

In addition, rotary kilns are also widely used in fields such as iron and steel, Zhengsun glass, and chemical pharmaceuticals. In these industries, rotary kilns can be used to heat treat metals, oil, make glass, and more.

Advantages and disadvantages of rotary kiln heating 1000 degrees.

Rotary kiln heating 1000 degrees has its advantages and disadvantages. A rotary kiln can increase production efficiency because it can heat multiple objects at the same time. In addition, the rotary kiln can also reduce production costs because it can complete the firing process in a short time.

However, rotary kiln heating 1000 degrees also has its drawbacks. In the heating process, a large amount of electricity and fuel needs to be consumed, which will increase the production cost of the enterprise. And, because rotary kiln operation requires a high degree of skill and experience, operational errors can lead to overfiring or breakage of objects.

Conclusion Rotary kiln heating 1000 degrees is a process of mechanical heating of goods, which has a wide range of applications in ceramics, cement, steel, chemical and pharmaceutical, glass and other industries. Although it has its advantages and disadvantages, the rotary kiln heating 1000 degrees will continue to play an important role in the field of industrial production due to its importance in the production process.