Portable resistance-capacitance-method-based on-line measurement device and method for dust moisture content

Abstract

The invention, which belongs to the technical field of dust measurement, discloses a portable resistance-capacitance-method-based on-line measurement device and method for a dust moisture content. Oneend of a probe rod of the measurement device is connected to a housing; and a humidity sensor is disposed inside the probe rod. A first filter layer and a second filter layer are disposed at one end,away from the housing, of the probe rod; and a heating film is laid on the inner wall of the probe rod. The first filter layer uses an electrostatic filter net; and the second filter layer uses a Si02-PTFE membrane filter material. The heating film is adhered to the inner wall of the probe rod by an adhesive; and the substrate of the heating film is a high-temperature-resistant polyester film. The conductor in the heating film is made of grapheme; and the heating film is directly connected to a power source through a wire. A water-cooled assembly is arranged in the housing; water in a water tank and a water-cooled sleeve in the water-cooled assembly flows circularly, so that the temperature of the flue gas is reduced. On the basis of different dust characteristics, comprehensive development is preformed; and the moisture contents of thermal power plant dust and mine dust can be measured. The on-line measurement device and method have advantages of fast response speed, high measurementaccuracy and high versatility.

Description

technical field [0001] The invention relates to the technical field of dust measurement, more specifically, to a portable resistance-capacitance online measurement device and method for dust moisture content. Background technique [0002] In recent years, the state has formulated a series of relevant policies for the environmental protection industry, which has promoted the environmental protection industry to the status of a strategic emerging industry and a new pillar industry of the national economy. The number of thermal power plants and open-pit mines in my country is huge, and a large amount of dust will be generated during the production process. Due to the high moisture content of the dust, the filter material of the dust collector will have dew condensation, sticky bags, and difficulty in cleaning dust, which greatly affects the dust removal. Therefore, it is necessary to adjust the properties of the filter material of the dust collector according to the moisture con...

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Problems solved by technology

[0009] Aiming at the fact that the characteristics of thermal power plant dust and mine dust are quite different, and the existing dust moisture content measurement device cannot well adapt to the problem of online moisture content measurement of the two types of dust, the present invention provides a portable resistance-capacitance dust content measurement device. Humidity on-line measuring device and method; the invention solves the problems of poor equipment portability and low versatility, enables the instrument to measure the moisture content of thermal power plant dust and mine dust, improves the accuracy of dust measurement, and prolongs the use of equipment Long life, improving the versatility and portability of the equipment

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