High temperature slag online visual monitoring system and method
A visual monitoring and slag technology, applied in the direction of DC flow characteristics measurement, etc., can solve the adverse effects of long-term stable operation of the gasifier, the inability to observe the fluidity of high-temperature slag in the gasifier in real time, and the inability to obtain real-time slag flow during gasification operation. problems such as slag fluidity, to achieve the effects of improving sensitivity, saving labor costs, and ensuring normal operation
Active Publication Date: 2019-06-25
SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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[0003] According to the "Measurement Method of Coal Ash Viscosity" (GB / T 31424-2015), the existing measurement technology is to use a high-temperature rotational viscometer to use the viscosity measured off-line as a parameter to describe the fluidity of slag, but it is impossible to observe the gas in real time. Fluidity of High Temperature Slag in Furnace
The on-line detection of slag velocity field and viscosity under high-temperature gasification conditions is still a blank at home and abroad, which makes it impossible to obtain the slag fluidity in gasification operation in real time when the gasifier is running, which has great impact on the long-term stable operation of the gasifier. have adverse effects
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[0069] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0070] The basic structure of the present invention is as figure 1 shown. It mainly includes the high-temperature slag online visual monitoring hardware system built by high-temperature endoscope, industrial camera and industrial computer, and the optical flow method to realize the high-temperature slag velocity field and online viscosity measurement software method.
[0071] The working mode of the hardware system of the present invention is that the high-temperature endoscope is inserted into the gasification furnace, and is imaged on the imaging surface of the industrial camera connected to the outer port; It is transmitted to the industrial computer; in the industrial computer, the flow rate and viscosity of the slag liquid are monitored online through software. The physical structure of the hardware is as figure 2 shown. The high-tem...
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The invention relates to a high temperature slag online visual monitoring system and method. The method comprises the steps that a high temperature endoscope extends into a gasifier and images high temperature slag onto the imaging surface of an industrial camera; the industrial camera collects a flow image of the slag in the molten state of the inner wall of the gasifier and transmits the image to an industrial computer; a slag liquid viscosity measurement program in the industrial computer monitors a velocity field and viscosity online through three steps of image acquisition, velocity fieldcalculation and viscosity estimation; a user interacts with the program through a graphical user interface; and the monitoring result is output to a gasifier control device. according to the invention, estimation of a high-temperature slag moving field is converted into estimation of a continuous video optical flow field, and online estimation of the flow rate of the high-temperature slag is realized; the fluidity of the high-temperature slag is monitored in real time; a basis is provided for the liquid slag discharging process of the gasifier; and normal operation of the gasifier is ensured.
Description
technical field [0001] The invention belongs to the field of machine vision, and specifically relates to an online visual detection system and method for high-temperature molten slag. Background technique [0002] my country is one of the few countries in the world that uses coal as the main energy source, and is the largest producer and consumer of coal in the world. Coal gasification is an important technology to realize clean and efficient coal conversion, and it is also the key technology and leading technology of modern coal chemical industry. In actual operation, the fluidity of slag is the most important parameter to ensure liquid slag discharge and stable operation of the gasifier. Therefore, timely and accurate acquisition of the real fluidity of slag under the operating conditions of the gasifier is of great significance to the long-term stable operation of the gasifier. [0003] According to the "Measurement Method of Coal Ash Viscosity" (GB / T 31424-2015), the e...
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IPC IPC(8): G01N11/02
Inventor 丛杨冯云田冬英
Owner SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI