Device and method for disposing waste by preheating raw materials through rotary kiln

Abstract

The invention provides a device for disposing waste by preheating raw materials through a rotary kiln. The device comprises a decomposing furnace, the rotary kiln, a tertiary air pipe and a minisize rotary kiln, wherein the tertiary air pipe is connected with a kiln head of the rotary kiln and the decomposing furnace, and the minisize rotary kiln and the tertiary air pipe are arranged to form an inclination angle. One end of the minisize rotary kiln communicates with the tertiary air pipe through a first pipe, and the other end of the minisize rotary kiln communicates with the decomposing furnace through a second pipe. The end, communicating with the tertiary air pipe, of the minisize rotary kiln is higher than the end, communicating with the decomposing furnace, of the minisize rotary kiln. The first pipe communicating with the tertiary air pipe is provided with a waste charging opening. The first pipe communicates with a preheater through a third pipe, and the hot raw materials in the preheater are distributed into the minisize rotary kiln through the third pipe. By means of the device, the harmless disposal process of the solid waste is achieved while cement clinker is produced;the charging amount of the waste is increased; and in addition, the problem that coking occurs in the minisize rotary kiln and the pipes to cause blockage can be avoided.

Description

technical field [0001] The invention relates to the technical field of collaborative waste treatment in cement production, in particular to a device and a treatment method for preheating raw materials in a rotary kiln for waste treatment. Background technique [0002] With the continuous development of social science and technology, the problem of continuous pollution of the environment has also emerged. The environment on which human beings live is very fragile. In order to protect the environment, people have adopted restrictions on the discharge of pollutants. At the same time, people are also making continuous efforts to deal with pollutants. [0003] The kiln for cement production has a high temperature and strong oxidative alkaline environment during the high temperature calcination of clinker in the rotary kiln. The high temperature and strong oxidative alkaline environment provides excellent treatment conditions for some solid waste that meets the requirements of ent...

AI Technical Summary

Problems solved by technology

[0004] For example, when waste is sprayed from the kiln head or waste is added to the calciner, there may be excessive heat absorption or excessive heat release in the kiln head or calciner, resulting in a limited amount of waste disposal

Moreover, when an accident occurs during the waste disposal process, the cement kiln needs to be closed for inspection and maintenance, which will affect the operation of the cement kiln

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