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Slurry foam false liquid level-considered absorption tower liquid level height measurement device and method

A false liquid level and liquid level height technology, applied in the field of absorption tower liquid level height measurement devices, can solve problems such as control errors and operators cannot adjust operating conditions, so as to reduce bubble interference, reduce influence, and prevent blockage. eclipse effect

Pending Publication Date: 2019-05-07
NORTH CHINA ELECTRICAL POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In actual operation, the vapor phase medium in the desulfurization tower slurry will increase dramatically (that is, foaming phenomenon), but the measurement position of the pressure transmitter is below the foaming position, and the measured value P does not change, and the operator cannot timely according to Level fluctuations adjust operating conditions, resulting in control errors

Method used

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  • Slurry foam false liquid level-considered absorption tower liquid level height measurement device and method
  • Slurry foam false liquid level-considered absorption tower liquid level height measurement device and method

Examples

Experimental program
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Effect test

Embodiment 1

[0042] This embodiment provides a device for measuring the liquid level height of the absorption tower considering the false liquid level of the slurry foam, wherein the structural diagram of the device is as follows figure 1 shown, from figure 1 It can be seen that it includes:

[0043] Fan 8, desulfurization liquid level change segment scale 9 and self-adaptive float 10; described self-adaptive float (such as figure 2 shown) is a cylindrical structure, which is provided with a first purge gas inlet channel 1, a second purge gas inlet channel 2, a first purge gas outlet channel 3, a second purge gas outlet channel 4, a third purge gas outlet channel Scavenging gas outlet passage 5, fourth purge gas outlet passage 6 and slideway 7;

[0044] The inlets of the first purge gas inlet channel and the second purge gas inlet channel are respectively connected to the fan through pipelines;

[0045] The first purge gas outlet channel, the second purge gas outlet channel, the third ...

Embodiment 2

[0050] This embodiment provides a method for measuring the liquid level height of the absorption tower considering the false liquid level of the slurry foam, wherein the method is realized by using the liquid level height measuring device of the absorption tower considering the false liquid level of the slurry foam provided in Example 1, It includes the following steps:

[0051] (1) Determine the lower limit height of the desulfurization slurry liquid level when the absorption tower is in normal operation, which is the height H of the desulfurization slurry liquid level fixed section 1 ;

[0052](2) Determine the upper limit height of the desulfurization slurry liquid level when the absorption tower is in normal operation, then the height of the self-adaptive float changes within the lower limit height of the desulfurization slurry liquid level and the upper limit height of the desulfurization slurry liquid level. For the final position of the float, read the height value fro...

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Abstract

The invention provides a slurry foam false liquid level-considered absorption tower liquid level height measurement device and method. The device comprises a fan, a desulfurization liquid level variation section ruler and a self-adaptive floater, wherein the self-adaptive floater is a cylindrical structure and is provided with a first purging gas inlet channel, a second purging gas inlet channel,four purging gas outlet channel and a slide; inlets of the first purging gas inlet channel and the second purging gas inlet channel are respectively connected with the fan through pipelines; the fourpurging gas outlet channels are equidistantly distributed in the self-adaptive floater; the first purging gas inlet channel and the second purging gas inlet channel are arranged in the self-adaptive floater, are vertical to each other and form angles of 45 degrees with adjacent purging gas outlet channels; the slide is located at the center of the self-adaptive floater, has a smooth inner wall andis isolated from the purging gas inlet and outlet channels; one end of the desulfurization liquid level variation section ruler is fixed on the inner side wall of an absorption tower; and the other end of the desulfurization liquid level variation section ruler passes through the slide to be inserted into desulfurization slurry of the absorption tower.

Description

technical field [0001] The invention relates to a device and method for measuring the liquid level height of an absorption tower considering the false liquid level of slurry foam, and belongs to the technical field of flue gas desulfurization. Background technique [0002] In order to comply with the national ultra-low emission requirements of coal-fired units and the trend of flexible peak-shaving of coal-fired power plants, power plants have higher and higher performance requirements for thermal power unit desulfurization devices. Generally, the absorption tower is in countercurrent contact, that is, the sulfur-containing flue gas enters from the bottom of the tower, and the absorbent enters from the top of the tower to complete the process of flue gas desulfurization. If the liquid level at the bottom of the absorption tower is too high, it will flood the entrance where the flue gas enters the desulfurization tower, and the flue gas will not be able to enter. If the liqu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F23/66
Inventor 刘高军李庆靳江波张朝阳郭玥杜磊姜龙张清峰
Owner NORTH CHINA ELECTRICAL POWER RES INST