Fluidized bed waste incinerator
Fluidized bed incinerator is one of the most widely used garbage incinerators in China. In the process of using fluidized bed incineration technology, its combustion principle is mainly to burn garbage through fluidization technology, and with the help of sand Safe disposal, so as to achieve the ultimate goal of uniform heat transfer and complete combustion of domestic waste incineration media. During the process of waste incineration, air will be sprayed from the bottom of the fluidized bed, and reasonable agitation of the sand medium will be achieved, so that the waste will form a fluid state. . Through the application of fluidized bed incinerator technology, the high-temperature resistance of the lower part of the furnace can be fully guaranteed. Moreover, heat-carrying inert particles are installed under the system plate, and the inert particles are brought to a boiling state while air is distributed under the bed. , and form a fluidized bed section. In the process of fluidized bed incineration of garbage, the garbage needs to be crushed and buried to make the garbage reach a certain particle size. Moreover, through short-term fluidized incineration, it can be processed in a short time with the help of combustion air. Thus forming the rationality of fluidized bed incinerator.
01Advantages
In the application process of fluidized bed incinerator, its advantages are mainly reflected in the following aspects:
First, the efficiency of the fluidized bed incineration furnace is relatively high, and the removal rate of unburned materials is only 1%.
Second, during combustion in the furnace, there are no mechanical moving parts in the furnace, and the durability is relatively good, which can extend the service life of the machinery.
02Disadvantages
First, the fluidized bed incinerator mainly relies on air for garbage processing and combustion, and then has granularity requirements for the garbage entering the furnace. Normally, the garbage particles entering the furnace cannot be larger than 50mm, and the thickness of large particles of garbage will cause Fall directly to the bottom of the furnace to achieve the ultimate goal of complete combustion.
Second, the boiling state of the garbage in the furnace will rely entirely on high-volume and high-pressure air. There are problems such as high power consumption and large amounts of ash produced, which will bring a certain load to the downstream flue gas purification.
Third, the fluidized bed incinerator requires relatively high professional skills during its operation and operation. Therefore, professional technicians are needed to operate and guide the optimization of control methods.
Rotary garbage incinerator
In the process of using rotary garbage incinerator incineration technology, its combustion technology mainly adopts two-stage combustion technology. In one section of the project, a horizontal cylindrical combustion type similar to a cement kiln was used, and the final purpose of mixing garbage was achieved by rotating at a fixed speed. When the garbage is burned in the first combustion chamber, it will directly enter the second combustion chamber. The exhaust gas is generated in one of the combustion chambers. When it contains organic matter, it needs to be introduced into the first combustion chamber, and then auxiliary fuel or ultrasonic gas is used. The combustion effect of the amount of combustion air. During the treatment process in the combustion chamber, due to changes in rotational speed, bottom ash and fly ash will be processed separately, affecting the residence time in the rotary garbage incinerator. At the same time, a strong mechanical force will be exerted on the garbage in the high-temperature air. The collision realizes the effective treatment of garbage combustible materials.
In the process of using the rotary garbage incinerator, there are several advantages and disadvantages.
01Advantages
The final goal can be achieved through reasonable and different pretreatment of the wastes being processed, and its adaptability is relatively wide. In garbage treatment, the rotation speed of the rotary kiln can be deregulated and the residence time of the garbage can be adjusted. At the same time, due to the operating status of the system's mechanical vibration, the garbage can achieve a good mixing effect and improve the overall efficiency of garbage treatment.
02Disadvantages
Summary of the operation process of the rotary kiln incinerator, which burns mainly excess air, resulting in lower operating efficiency of the entire system. The garbage disposal is large, and the combustion problem cannot be effectively controlled, requiring auxiliary fuel to achieve the purpose of combustion. Spherical solid waste is prone to the rotary kiln phenomenon and is not easy to be completely burned. Moreover, in the garbage treatment, there are relatively many flotation particles in the flue. Moreover, in the process of processing sludge waste, it is easy to occur. Slag phenomenon.
Fluidized bed waste incinerators and rotary waste incinerators each have their own advantages and obvious shortcomings. Therefore, in the current waste treatment process, it is necessary to optimize the selection of incinerator technology through systematic analysis of waste incineration phenomena. , achieve the ultimate goal of effective garbage disposal and provide stable support for environmental optimization.
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