How to Reduce the Fuel Consumption of the Garbage Incineration Rotary Kiln?

时间:2021-11-18 作者 :超级管理员

For waste incineration rotary kilns, energy saving and oil consumption reduction means to reduce the consumption of waste incineration rotary kiln oil under the premise of ensuring product quality.


Measures to increase the dryness of the white mud filter cake to reduce fuel consumption, adopt a new type of garbage incineration rotary kiln cooler, because the combustion air is in direct contact with heat to preheat the combustion air, thus significantly reducing fuel oil consumption. Use heat-insulating materials with good heat-insulating properties. Reduce oil consumption.


Garbage incineration rotary kiln


Although there are many ways to reduce the fuel consumption of the garbage incineration rotary kiln, we still have to consider the economics and feasibility of the garbage incineration rotary kiln. The system of the garbage incineration rotary kiln must be designed, researched and improved to achieve what we want. Result of garbage incineration in rotary kiln.


The garbage incineration rotary kiln is widely used in the calcined stone industry, and the output of the garbage incineration rotary kiln is high. Many garbage incineration rotary kilns have been put into production, which are very suitable for large-scale active production lines. Now the world has 2200 tons of garbage incineration rotary kilns in production; a lot of garbage incineration rotary kilns with daily output of 150 to 300 tons have been built outside, and the operating conditions are very good. Well, it is also suitable for small and medium-sized enterprises.


Advantage analysis and development strategy of refuse incineration rotary kiln


The vertical cooler at the kiln head of the garbage incineration rotary kiln can not only quench the high temperature, improve the activity of the product, but also facilitate transportation and storage. At the same time, higher temperature secondary air entering the kiln can be obtained. It can increase the firing temperature in the kiln and reduce fuel consumption.


The garbage incineration rotary kiln is equipped with a vertical preheater at the end of the kiln, which can make full use of the high-temperature flue gas generated by the calcination in the garbage incineration rotary kiln to preheat the stone from normal temperature to the initial decomposition temperature state. This can not only greatly increase the output of the garbage incineration rotary kiln, but also reduce the heat consumption per unit product.


The garbage incineration rotary kiln can directly calcinate fine-grained stones of 10-50mm. Generally, the 0-30mm fine-grained stones of stone mines account for about 30-40 of the total output. This part of the stone cannot be used by other kiln types. And with the "refining" of steel raw materials, sintering gradually replaces stone with raw material, and fine-grained stone cannot be used comprehensively. The construction of a waste incineration rotary kiln production line can not only make full use of stone mine resources, but also conform to the sustainable development policy of the industry.


How to control the flame temperature of garbage incineration rotary kiln


The burning temperature of the clinker of the garbage incineration rotary kiln is 1300~1450℃, the flame temperature of the garbage incineration rotary kiln, that is, the gas temperature should reach 1540~1700℃, and the flame temperature of the garbage incineration rotary kiln should be about 350~500 higher than the burning temperature. ℃. When the flame temperature is too low. Clinker is difficult to burn, and when the flame temperature is too high, it is easy to cause clinker overburning: the kiln lining is burnt, and the red kiln phenomenon often occurs, which not only wastes energy, but also reduces the quality of the clinker.


The new type of waste incineration rotary kiln dry precalciner kiln is different from other kilns, and its production requires "thin material fast burning". The material rises quickly in the waste incineration rotary kiln. Due to the thin material layer, the heat transfer and reaction speed are accelerated. The lower the energy required for clinker burning, the higher the output of the kiln. To increase the heating rate of the waste incineration rotary kiln material, the flame temperature must be increased. Under the premise of ensuring the quality of the clinker, the material stays in the high burning zone. The shorter the time, the better the quality of the fired clinker, and the higher the 28-day strength. To shorten the residence time of the material in the high temperature zone, you must increase the flame temperature and speed up the garbage incineration rotary kiln speed, that is, "thin material fast burning" '. Therefore, increasing the flame temperature is the basic prerequisite for increasing the output of the garbage incineration rotary kiln and reducing the consumption. The flame temperature is not high and the kiln speed cannot be accelerated, and it may even run out or underburn.