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Density measurement system for slurry in wet flue gas desulfurization absorption tower of thermal power plant

A technology for wet flue gas desulfurization and thermal power plants. It is applied to determine the direction of specific gravity by measuring the pressure difference. It can solve problems such as measurement errors and affecting the operation of the desulfurization system, and achieve overall investment reduction, corrosion hazard removal, and simple algorithms. Effect

Inactive Publication Date: 2015-06-03
国投钦州发电有限公司
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Problems solved by technology

Long-term operation will produce measurement errors, which will seriously affect the operation of the desulfurization system

Method used

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  • Density measurement system for slurry in wet flue gas desulfurization absorption tower of thermal power plant

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Embodiment Construction

[0014] Such as figure 1 As shown, it is a structural schematic diagram of a slurry density measurement system in a wet flue gas desulfurization absorption tower of a thermal power plant according to the present invention. The present invention includes a controller and two sets of measuring mechanisms. on the desulfurization absorption tower 1. The differential pressure measurement method is used to directly measure the density of the slurry in the desulfurization absorption tower 1.

[0015] The measuring mechanism includes two pressure transmitters 2 and two sampling tubes 3 arranged at intervals in the vertical direction outside the desulfurization absorption tower 1; one end of each sampling tube 3 is connected to the desulfurization absorption tower 1, and the other end is connected to the corresponding The connection port of the pressure transmitter 2 is connected, and a manual valve 4 is provided on each sampling pipe 3; the two pressure transmitters 2 in each group of...

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Abstract

The invention discloses a density measurement system for slurry in a wet flue gas desulfurization absorption tower of a thermal power plant. The density measurement system comprises a controller and at least one group of measurement mechanisms, wherein each measurement mechanism comprises two pressure transmitters and two sampling tubes; each two pressure transmitters are arranged outside the desulfurization absorption tower at intervals along the vertical direction, and an included angle between a tube connecting hole of each pressure transmitter and the desulfurization absorption tower is 30-35 degrees; one end of each sampling tube is connected into the desulfurization absorption tower, and the other end of each sampling tube is connected with the tube connecting hole of the corresponding pressure transmitter; a manual valve is arranged on each sampling tube. According to the density measurement system, by virtue of a differential pressure type measurement manner, the problem that a pipeline is worn during the measurement of a mass flow meter is solved, the maintenance cost is greatly saved, and the real-time density of slurry in the desulfurization absorption tower can be further accurately and stably displayed; furthermore, the included angle between the tube connecting hole of each pressure transmitter and the desulfurization absorption tower is 30-35 degrees, so that the problem of slurry deposition is solved, and the corrosive damage caused by slurry to the pressure transmitters is avoided.

Description

technical field [0001] The invention relates to the technical field of environmental protection desulfurization in thermal power plants, in particular to providing a slurry density measurement system in a wet flue gas desulfurization absorption tower of a thermal power plant. Background technique [0002] In the wet flue gas desulfurization system of a thermal power plant, the density of the limestone slurry in the desulfurization absorption tower is related to the desulfurization efficiency, so it is necessary to accurately measure the density of the limestone slurry in the absorption tower in real time. However, due to the complicated process of the wet desulfurization system, the density of limestone slurry in the desulfurization absorption tower is not easy to measure. At present, a mass flowmeter is used to measure the density of limestone slurry, that is, after measuring the mass flow rate of the fluid flowing through the flow tube, the density of the slurry is obtaine...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N9/26
Inventor 张旭朱逢民李洪庆蒙嘉刚杨廷志黄晓峰
Owner 国投钦州发电有限公司
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