Cold state simulation device for coking process of heating surface of incinerator

Abstract

The invention discloses a cold state simulation device for a coking process of a heating surface of an incinerator, which comprises a circulation channel, the circulation channel comprises at least two main pipelines, and a height difference exists between the main pipelines; an injection channel is formed in the top of the main pipeline located at the topmost end, the main pipeline located at the topmost end communicates with the injection channel, and the injection channel is used for injecting liquid into the circulation channel; the solute adding chamber is arranged in the main pipeline and located at the rear end of the injection channel, solute is added into the solute adding chamber in a natural mixing or spraying mode and mixed with liquid, and the reaction assembly is arranged in the main pipeline and located at the rear end of the solute adding chamber. The invention provides the cold state simulation device for the coking process of the heating surface of the incinerator, which is adaptive to complex and various incineration conditions, and the coking process of the heating surface of different industrial incinerators can be simulated by different liquid flow rates, liquid densities, liquid reaction speeds and circulating channel shapes.

Description

technical field [0001] The invention relates to the technical field of ash accumulation and coking simulation experiments of incinerators, in particular to a cold-state simulation device for the coking process of a heating surface of an incinerator. Background technique [0002] The problem of ash deposition and coking in the incinerator is caused by many complex factors, such as the geometric size of the furnace cavity, the arrangement of the burners and the flow direction and velocity of the flue gas, the concentration of fly ash, the wall temperature of the incinerator and the humidity of the flue gas Wait. Because the problem of ash deposition and coking in the incinerator is very complicated, it involves physical factors such as the temperature change of the incinerator flue gas, the viscosity of the slag, the state of ash deposition, and the mixed reaction of various incomplete combustion substances under the high temperature state of the incinerator to generate trace ...

AI Technical Summary

Problems solved by technology

However, the disadvantages of the existing schemes: (1) The talcum powder is simulated in a cold state in a self-made small flue. Because the coking process is difficult to occur due to the low temperature, the talcum powder can only simulate the non-coking ash accumulation problem in the self-made flue

(2) Since the actual flue gas contains solid fly ash with a high melting point and liquid fly ash with a low melting point, solid powders such as talcum powder cannot simulate the composition of flue gas

(3) Single-component powder cannot simulate the deposition and coking process of chemical reactions in flue gas

(4) Solid powder with a single component is difficult to simulate the phase change deposition process of fly ash on the heating surface

(5) The complete formation process of ash deposits cannot be observed in the experiment in a closed simulated flue. To observe different stages of ash deposits and coking requires multiple interruptions of the experiment, which increases the complexity and uncontrollability of the experiment

[0006] To sum up, the outstanding shortcomings of the devices used in the cold coking simulation process of incinerators lead to their limited guidance on actual industrial production

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