Coal flow monitoring automated
November 2013
Flow Measurement & Control
With the increasing demand from the power industry to achieve better combustion performance and fuel economy, M&W Asketeknik, in close cooperation with specialists from coal fired power utilities, has developed the ACFM-2200 automatic coal flow monitor.
The ACFM-2200 is a fully automatic monitoring and sampling unit, which collects pulverised coal samples from pneumatic transport pipes between mills and burners. The measuring results are transmitted to the control room for evaluation and control of the coal flow. The sampling operation is carried out according to the international ISO standard 9931. Typical applications include routine flow measurements, adjustment of fuel distribution, sampling of coal, monitoring of pulverising distribution settings in connection with low-NOx burners, and test firing of new coal types.
The sampling unit consists of a motorised rotating sampler arm with four coal extraction nozzles. The measuring unit separates the coal particles from the extracted gas stream and collects them in a measuring tube where the volume is measured by a fibre optic measuring device. The control unit supervises the function of all components and converts the measuring signals for display on the operator’s panel. Facilities for remote indication are also available. The operator’s panel allows easy access to mode selection and change of parameters, as well as display of error messages. The control unit can operate up to eight sampling and measuring units.
For more information contact Mike Andrews, OEN Enterprises, +27 (0)11 675 4447, [email protected], www.oenenterprises.co.za
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