Boiler flyash carbon content on-line testing apparatus

Abstract

The invention discloses an on-line test device for the carbon content of boiler flying ash, and includes a sample collector, a mounting plate, a first vacuum generator, a cyclone separator, an ash collecting tube, a mechanical hand, a high-power microwave source, a weighing sensor, a second vacuum generator, an ash discharging tube, a host and a measure case; wherein, the sample collector, the first vacuum generator and the second vacuum generator are fixedly installed on the mounting plate; the cyclone separator is respectively connected with the sample collector, the 1st vacuum generator and the ash collecting tube; the second vacuum generator is connected to the ash discharging tube; the other outlets of the ash collecting tube and the ash discharging tube are mounted in the measure case; the mechanical hand, the high-power microwave source, the weighing sensor and the host are also arranged within the measure case; the mechanical hand and the high-power microwave source and the weighing sensor are controlled by the host. The invention has the advantages of high measuring precision; no influence on the measuring precision caused by coal type change and good representative of a sample, etc., and truly provides exact real-time basis and guidance for the optimized combustion adjustment of a coal-fired boiler.

Description

technical field [0001] The invention relates to a detection device for carbon content in boiler fly ash, in particular to an online detection device for carbon content in boiler fly ash. Background technique [0002] The carbon content of fly ash in the flue of coal-fired power plant boilers is an important indicator reflecting the combustion efficiency of coal-fired boilers in thermal power plants. Real-time online detection of carbon content in fly ash will help guide the operation to adjust the air-to-coal ratio correctly and improve the level of boiler combustion control; Reasonable control of the carbon content of fly ash is beneficial to reduce the cost of power generation and improve the economy of unit operation. The on-line detection devices for the carbon content of boiler flue fly ash currently in use in domestic power plants basically use low-power microwave signal sources, and use the characteristics of carbon to absorb microwave energy and measure the carbon co...

AI Technical Summary

Problems solved by technology

The on-line detection devices for carbon content in boiler flue fly ash currently used in domestic power plants basically use low-power microwave signal sources, and use the characteristics of carbon to absorb microwave energy and measure the carbon content in fly ash according to the attenuation of microwave energy. Carbon content, but the measurement accuracy of the carbon content of fly ash by using the attenuation of microwave energy is greatly affected by the change of coal type. Once the type of coal burned by the boiler changes, the measurement accuracy of carbon content cannot be guaranteed , even the measured value of carbon content is not consistent with the trend of the actual carbon content

However, the current situation of coal used in domestic power plants is precisely that the types of coal vary greatly. This is why most users who have used online fly ash carbon content measurement products do not really use the signal measured by the online fly ash carbon measurement device as the boiler operation. Reason for adjustment

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