Measurement of residual carbon content in fly ash

A technology for resonance measurement and ash content, which can be used in measurement devices, sampling, material analysis using microwave means, etc., and can solve problems such as non-uniformity and no numerical value.

Inactive Publication Date: 2010-11-03
马克韦德尔股份公司工程贸易公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0009] However, it has been empirically seen that vibrations by manipulation and handling of granular media create separations i

Method used

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  • Measurement of residual carbon content in fly ash
  • Measurement of residual carbon content in fly ash

Examples

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Embodiment Construction

[0025] figure 1 A schematic diagram of the device 22 is shown and how the device 22 forms part of the flue gas system. Ash-laden flue gases 17 , produced by the combustion of carbonaceous fuels, for example in power plant boilers or other energy-generating plants, are led through the flue gas duct 1 from a channel 16 delimited by channel walls 18 . This flow is directed to an ash sampling device 19 consisting of a separator 2, in the example shown a cyclone, in which the ash is separated from the gas, and a funnel 3 through which the separated ash passes. 3 leads via inlet valve 4 to sample chamber 8 extending through microwave resonator cavity 7 . The gas is led back to channel 16 via conduit 14 .

[0026] Opposite the inlet end, the sample chamber 8 is provided with an outlet valve 12 which, in the open position, allows ash to enter the container 13 and which, in the closed position, blocks the sample chamber 8 . When the outlet valve 12 is closed, the level of material i...

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Abstract

A device (22) for measuring unburned carbon in a sample of ash-containing flue gas from combustion of carbonaceous fuel, the device (22) being designed with an ash sampling arrangement (19) and a sample compartment (8) extending through a microwave resonancechamber (7) which is connected to a microwave generator (15) and a microwave receiver (20), the sampling chamber (8) being provided with valves (4, 12) at inletand outlet, and a level meter (6), and wherein a pressurised air connection (5) for the samplechamber (8) is arranged at a position between the inlet valve (4) and the microwave resonance chamber (7), the pressurised air connection (5) being connected with a source of pressurised air (21). A method for measuring unburned carbon by taking a sampleofash-containing flue gas from combustion of carbonaceous fuel, wherein microwave resonance measurement is performed on the sample at a first and a second degree of compression given by the pressure in the sample chamber (8), and where the measured values in combination are compared with a reference curve for determining the residual carbon content in the sample.

Description

technical field [0001] The present invention relates to a device for measuring unburned carbon in a sample of ash-containing flue gas produced by the combustion of carbonaceous fuels, the device is designed with an ash sampling device and a sample chamber connected thereto, which extends through the A microwave resonant chamber for the generator and microwave receiver, the sample chamber is provided with valves and level meters at the inlet and outlet. [0002] Furthermore, the present invention relates to a method for measuring unburned carbon by sampling ash-laden fumes produced by the combustion of carbonaceous fuels, wherein the sample is introduced into a sample chamber extending through a microwave resonator cavity, and the sample chamber is filled with To a level above the microwave resonant cavity, the sample is compacted, microwave resonance measurements are performed on the sample, and the measurements are compared to a reference curve to determine the carbon content...

Claims

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Application Information

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IPC IPC(8): G01N1/22G01N22/00
CPCG01N1/2211G01N2001/1018G01N1/2247G01N22/00
Inventor A·S·韦泽尔T·P·安诺生B·迪姆克
Owner 马克韦德尔股份公司工程贸易公司
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