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Absorber tray liquid holdup monitoring method for wet flue gas desulfurization system

A wet flue gas desulfurization and liquid holdup technology, which is applied to volume measuring instruments/methods, liquid/fluid solids measurement, measuring devices, etc., can solve the problem of monitoring liquid holdup of wet flue gas desulfurization absorption tower trays that have not yet been found. methods, etc., to achieve the effect of reducing the number of layers, easy to implement, and improving desulfurization efficiency

Pending Publication Date: 2017-11-24
CENT CHINA BRANCH OF CHINA DATANG CORP SCI & TECH RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no monitoring method and device for the tray liquid holdup of the wet flue gas desulfurization absorption tower

Method used

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  • Absorber tray liquid holdup monitoring method for wet flue gas desulfurization system
  • Absorber tray liquid holdup monitoring method for wet flue gas desulfurization system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] see figure 1 , the wet flue gas desulfurization system absorption tower tray liquid holdup monitoring method of the present invention monitors the tray liquid holdup by cyclically monitoring the liquid levels at different positions on the tray:

[0025] 1) Arrange pressure detection holes (pressure measurement points) evenly at the bottom of the tray, each pressure detection hole is connected to the pressure sensor 1 through the corresponding pressure measurement pipeline, and the solenoid valve 4 is installed on each pressure measurement pipeline;

[0026] 2) Through the solenoid valve 4, control whether each pressure measuring pipeline is connected with the pressure sensor 1, and selectively or according to a certain rule, test the pressure of the relative position of the corresponding pressure detection hole;

[0027] 3) The output signal of the pressure sensor is connected to the display instrument or the monitoring system 2, and the display instrument or the monito...

Embodiment 2

[0030] see figure 1 , the wet flue gas desulfurization system absorber tray liquid holdup monitoring method of this embodiment differs from Embodiment 1 in that each pressure measuring pipeline is connected to a pressure sensor through a multi-way valve 5, and one pressure sensor is used to realize the whole The monitoring of pallet pressure saves the number of sensors, reduces system complexity and saves investment.

Embodiment 3

[0032] see figure 1 , figure 2 , the wet flue gas desulfurization system absorption tower tray liquid holdup monitoring method of this embodiment is different from Embodiment 1 in that: the pressure measuring points are set in units and correspond to the trays; each pressure measuring pipe passes through a solenoid valve It is connected to the main pipeline of the pressure measuring point, and then connected to the pressure sensor through a multi-way valve. The upper and lower layers of the main pipeline of the pressure measuring point are arranged in a staggered manner to play the role of uniform gas distribution and partially serve as a tray.

[0033] see figure 2 , the solid line and dotted line are the main pipes of the upper and lower pressure measuring points respectively, and the main pipes of the lower pressure measuring points (shown by the dotted line) are arranged just below the center line of the two upper pressure measuring point main pipes (shown by the solid ...

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Abstract

The invention relates to an absorber tray liquid holdup monitoring method for a wet flue gas desulfurization system. According to the absorber tray liquid holdup monitoring method for the wet flue gas desulfurization system, tray liquid holdup is monitored through cycle monitoring of liquid levels at different positions of a tray. Pressure detection holes are uniformly distributed at the bottom of the tray, each pressure detection hole is connected with a pressure sensor through a corresponding pressure detection pipeline, and an electromagnetic valve is mounted on each pressure detection pipeline. Whether each pressure detection pipeline is communicated with the pressure sensor or not is controlled through the corresponding electromagnetic valve, and a pressure of a relative position of the corresponding pressure detection hole is tested selectively or according to a certain rule. Output signals of the pressure sensor are connected with a display instrument or a monitoring system, and the display instrument or the monitoring system monitor pressure signal variation to realize monitoring of the absorber tray liquid holdup. By monitoring of tray liquid holdup variation, on the basis that sulfur dioxide reaches the standard, the tray liquid holdup is reduced, system pressure loss is reduced, and energy saving is realized.

Description

technical field [0001] The invention relates to a wet flue gas desulfurization system, in particular to a method for measuring the liquid holding capacity of an absorption tower tray of the wet flue gas desulfurization system. Background technique [0002] In the absorption tower of the wet desulfurization system, increasing the spray volume of the desulfurization absorbent and increasing the contact area between the flue gas and the absorbent droplets are the main means to improve the desulfurization efficiency. On the one hand, it is necessary to adjust the flow rate of the slurry circulation pump (increase the liquid-gas ratio) and the higher nozzle pressure drop (increase the spray coverage and droplet surface area) as the main parameters to achieve the required desulfurization efficiency. Some enhanced contact equipment is used to increase the contact area of ​​gas and slurry to improve desulfurization efficiency, and the tray is the most widely used one. [0003] Tray...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F22/02
CPCG01F22/02
Inventor 周晓湘汪永威于伟静吕小林王强丁朋果弋舒昱
Owner CENT CHINA BRANCH OF CHINA DATANG CORP SCI & TECH RES INST CO LTD
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