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Method and device for measuring liquid level of absorption tower

A liquid level measurement device and liquid level measurement technology, applied in the direction of measuring devices, liquid/fluid solid measurement, lubrication indicating devices, etc., can solve the problems of high cost of measuring instruments, inaccurate liquid level measurement of absorption towers, etc., and reduce production Operating cost, low cost, solve the effect of inaccurate measurement

Inactive Publication Date: 2012-06-27
ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY +1
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Problems solved by technology

[0004] In view of this, the present invention provides a method and device for measuring the liquid level of the absorption tower to overcome the problems of inaccurate measurement of the liquid level of the absorption tower and high cost of measuring instruments in the prior art

Method used

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  • Method and device for measuring liquid level of absorption tower
  • Method and device for measuring liquid level of absorption tower
  • Method and device for measuring liquid level of absorption tower

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Embodiment 1

[0027] Please refer to the attached figure 2 And attached image 3 ,in, figure 2 The block diagram of the method for measuring the liquid level of the absorption tower provided by the embodiment of the present invention, image 3 The instrument installation diagram of the liquid level measurement method of the absorption tower provided in the embodiment of the present invention is now taken as an example of collecting the pressure values ​​at the predetermined heights of the slurry in the absorption tower to collect the pressure values ​​at three predetermined heights.

[0028] Use the differential pressure between pressure transmitter 1 and 2 to measure the slurry density ρ2 in section H2;

[0029] ρ 2 = P 1 - P 2 g H 2 ...

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Abstract

The invention provides a method for measuring the liquid level of an absorption tower. The method includes the steps as follows: calculating the slurry average density of any two predetermined heights through collecting the pressure values at the predetermined heights of slurry of the absorption tower; and obtaining a curve for the slurry density and the height of the absorption tower as per the slurry average density through adopting the interpolation fitting algorithm, so as to obtain the liquid level value of the slurry. The method provided by the invention effectively solves the problem that the liquid level measurement of the absorption tower is inaccurate in the prior art, is lower in the cost of the used detecting instrument in the invention compared with the cost of the used measuring instrument in the prior art, and reduces the production and running cost of a power plant.

Description

technical field [0001] The invention relates to the field of thermal power generation, in particular to a method and device for measuring the liquid level of an absorption tower. Background technique [0002] With the growth of economic development and the increasingly stringent environmental standards, the state has intensified its efforts to control the sulfur dioxide pollution of thermal power plants, which has promoted the development of the flue gas desulfurization industry of thermal power plants. Now large-scale thermal power plants adopt limestone-gypsum wet flue gas desulfurization technology, and the absorption tower is the key equipment of limestone-gypsum wet process. Among them, the liquid level of the absorption tower is an important operating parameter of the limestone-gypsum wet flue gas desulfurization system. If the liquid level is too high, the slurry in the absorption tower will overflow, and if the liquid level is too low, the desulfurization efficiency ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F23/14G01F23/284
Inventor 陈卫罗志浩王会陈朝荣高红
Owner ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY
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