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Automatic sampling detection device for pH meters of desulfurizing absorption towers in thermal power plants

A technology for desulfurization absorption towers and thermal power plants, applied in sampling devices, measuring devices, instruments, etc., can solve problems such as easy blockage of the pH meter measurement system, easy damage to electrodes, and inaccurate measurement, so as to prevent the abnormal influence of pH value Desulfurization efficiency, improve desulfurization efficiency, improve the effect of gypsum quality

Active Publication Date: 2019-01-04
DATANG BINZHOU POWER GENERATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the disadvantages of pH meter measurement system in the prior art, such as easy blockage, poor fluidity, inaccurate measurement, and easily damaged electrodes, the invention provides an automatic sampling and detection device for the pH meter of the desulfurization absorption tower of a thermal power plant. The modification of the pH meter aims to improve the measurement accuracy of the pH meter, improve the accuracy of the measurement, improve the desulfurization efficiency, prevent the environmental protection data from exceeding the standard, save personnel maintenance effort, reduce the wear and tear of the pH meter, and prolong the service life of the pH meter

Method used

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  • Automatic sampling detection device for pH meters of desulfurizing absorption towers in thermal power plants
  • Automatic sampling detection device for pH meters of desulfurizing absorption towers in thermal power plants
  • Automatic sampling detection device for pH meters of desulfurizing absorption towers in thermal power plants

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Embodiment 1

[0037] Such as Figure 1-Figure 5 As shown, a thermal power plant desulfurization absorption tower pH meter automatic sampling detection device of this embodiment includes a buffer tank 100 connected to the absorption tower 400 through a slurry inlet pipe 410, and the side wall of the buffer tank 100 is provided with an inclined insertion tank The first pH meter 210, the second pH meter 220 and the differential pressure transmitter 300 are integrated, the filter unit 120 is arranged in the lower part of the buffer tank 100, and the overflow pipe 130 is arranged on the upper side wall of the buffer tank 100. In this embodiment, the buffer tank 100 is made of anti-corrosion plastic material to prevent the slurry in the absorption tower 400 from corroding the buffer tank 100, and the bottom of the buffer tank 100 is a truncated cone whose cross-sectional area gradually increases from bottom to top type structure, the upper part of which is a cylindrical tank; the connection betwe...

Embodiment 2

[0043] A kind of thermal power plant desulfurization absorption tower pH meter automatic sampling detection device of this embodiment, the basic structure is the same as embodiment 1, further, as Figure 4 As shown, in this embodiment, the filter unit 120 includes a flat filter section 121 arranged horizontally at the inlet end of the lower part of the buffer tank 100, and a conical filter section 122 and a conical collection section 123 are arranged successively above the flat filter section 121. The cross-sections of the section 122 and the cone collecting section 123 gradually decrease from bottom to top, and the bottom cross-sectional area of ​​the cone filter section 122 is smaller than the area of ​​the flat filter section 121, and filter holes are provided on the circumferential side walls of the cone filter section 122 , The circumferential side wall of the cone collecting section 123 is a solid side wall. In the present embodiment, the area of ​​the flat filter sectio...

Embodiment 3

[0046] A kind of thermal power plant desulfurization absorption tower pH meter automatic sampling detection device of this embodiment, the basic structure is the same as embodiment 2, furthermore, this embodiment also includes vent pipe (not drawn in the figure), and this vent pipe is set On the side of the pulp inlet pipe 410 and communicated with the pulp inlet pipe 410, a manual valve and an electric valve are also arranged on the vent pipe. A heating device can also be installed, and a variety of conventional heaters in the industry can be used to slightly heat the gas used for flushing. The ventilation pipe can be used in conjunction with the flushing pipe 600 to ventilate synchronously during flushing, which helps to increase the flushing flow rate and enhance the flushing effect. In order to dry the pipeline in time, prevent the slurry or cleaning fluid from depositing in the pipeline and prevent the pipeline from being blocked.

[0047] In this embodiment, the first p...

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Abstract

The invention discloses an automatic sampling detection device for pH meters of desulfurizing absorption towers in thermal power plants, and belongs to the field of desulfurizing absorption towers. The automatic sampling detection device comprises a buffer tank and a breather pipe, wherein the buffer tank is communicated with an absorption tower through a slurry inlet pipe; a first pH meter, a second pH meter and a pressure difference transmitter, which are obliquely inserted into the tank is arranged on the side wall of the buffer tank; a filter unit is arranged at the inner lower part of thebuffer tank; an overflow pipe is arranged on the upper side wall of the buffer tank; the breather pipe is arranged on one side of the slurry inlet pipe and communicated with the slurry inlet pipe; and a manually operated valve and an electrically operated valve are arranged on the breather pipe. According to the automatic sampling detection device, pH meters of desulfurizing absorption towers aretransformed, so that the measurement precision of the pH meters is improved, the measurement correctness is improved, the desulfurization efficiency is improved, environment-friendly data exceeding is prevented, the maintenance vigor of personnel is saved, abrasion of the pH meters is decreased, and the service life of the pH meters is prolonged.

Description

technical field [0001] The invention relates to the technical field of wet desulfurization, and more specifically relates to an automatic sampling detection device for a pH meter of a desulfurization absorption tower of a thermal power plant. Background technique [0002] As the country's requirements for environmental protection indicators are getting higher and higher, thermal power plants have correspondingly increased requirements for wet desulfurization processes. Because the limestone and gypsum slurry in the desulfurization system not only contains chloride ions, but also has a large particle size, and is easy to scale, which is very serious for the electrode erosion and wear of the pH meter; The large drift of the pH measurement value, inaccurate measurement, unclean electrode washing, and easily damaged electrodes make it a difficult point in the analysis and measurement of the desulfurization absorption tower system. The pH meter of the traditional desulfurization...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00G01N1/10
CPCG01N1/10G01N33/00
Inventor 延龙徐美召孙德金丁浩杜华峰
Owner DATANG BINZHOU POWER GENERATION CO LTD
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