Online detection method for temperature field and ring forming thickness distribution in rotary kiln

Abstract

The invention provides an online detection method for temperature field and ring forming thickness distribution in a rotary kiln, and belongs to the technical field of cement production. The method comprises the following steps: performing historical data collection and dimension conversion on measurable process variables of an industrial field, and constructing a measurable process variable working condition set according to historical data; establishing a space rectangular coordinate system and solid geometry through a computational fluid mechanics simulation technology, and calculating in-kiln three-dimensional temperature field data under a measurable process variable working condition set according to a rotary kiln mechanism model; sampling the three-dimensional temperature field data under each working condition along an X axis, a Y axis and a Z axis, and combining measurable process variable data under the same working condition to train a deep neural network and establish an in-kiln temperature field soft measurement model based on the deep neural network; and based on the in-kiln temperature detected on line, a soft measurement model for the thickness of the formed ring in the kiln is established through a heat transfer equation. According to the invention, the technical problem that the temperature field and the ring forming thickness distribution in the rotary kiln cannot be detected can be solved.

Description

technical field [0001] The invention relates to the technical field of cement production, in particular to an online detection method for temperature field and ring thickness distribution in a rotary kiln. Background technique [0002] The cement industry is an important basic industry for the development of the national economy and has played an important role in improving people's livelihood, economic construction and national defense security. Cement production has the characteristics of high pollution, high energy consumption, and high emissions, but it is also an important means of dealing with urban garbage and hazardous waste. The cement production process can be summarized as "two grindings and one firing", among which clinker calcination is the most critical production link. As the core thermal equipment of the clinker calcination system, the operating status of the rotary kiln is of great significance for ensuring production safety, improving product quality, and ...

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides an online detection method for the temperature field and ring thickness distribution in the rotary kiln, which can solve the technical problem that the temperature field and ring thickness distribution in the rotary kiln cannot be detected

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