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Measure apparatus of flue gas desulphurization absorbing tower, slurry pH meter and densitometer by using wet method and its method

A technology for wet flue gas desulfurization and measuring device, which is applied in the direction of measuring device, specific gravity measurement, separation method, etc., can solve the problems of reducing service life and energy waste, and achieves the effects of reducing equipment wear, energy consumption and pressure.

Active Publication Date: 2012-06-13
武汉光谷环保科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This will not only wash away the worn gypsum discharge pump, pipeline, throttle orifice, pH meter, density meter, reduce the service life, but also cause unnecessary waste of energy

Method used

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  • Measure apparatus of flue gas desulphurization absorbing tower, slurry pH meter and densitometer by using wet method and its method
  • Measure apparatus of flue gas desulphurization absorbing tower, slurry pH meter and densitometer by using wet method and its method

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Experimental program
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Embodiment 1

[0018] A wet flue gas desulfurization slurry pH meter and density meter measuring device, comprising a desulphurization island absorption tower 1, a pH meter container 2, a pH meter 3, a density meter 4 and a slurry main pipeline 5 in the desulphurization island absorption tower. The technical points are :The pH meter container 2 is also equipped with a filter screen 6, the electrode of the pH meter 3 is built in the pH meter container 2, the lower end of the pH meter container 2 is connected with a flushing drain valve 8, and the pH meter container 2 and the desulfurization island absorption tower 1 are provided A bypass gate 9 is provided between the inlet door 7, the upper end opening of the pH meter container 2 and the density meter 4, and the other opening of the upper end of the density meter 4 is connected to the drain pipe 12, and the lower end of the drain pipe 12 is provided with a lever device 13, A trench 16 is provided under the lever device 13, an absorption tower ...

Embodiment 2

[0021] The invention also provides a pH meter and a density meter measuring method for wet flue gas desulfurization slurry. The wet flue gas desulfurization absorption tower slurry is directly drawn from the absorption tower wall, and the liquid level pressure of the absorption tower slurry is used to provide power and flow. The bypass gate 9 adjusts the flow rate at 3-5m / s to meet the requirements of the density meter 4 to measure the flow rate. The pH meter 3 measures the upper part of the buffer tank and the pH meter 3 and the density meter 4 are installed at 0 meters on the side of the trench 16 for desulfurization. The slurry of the absorption tower flows out of the main slurry pipe 5 installed in the absorption tower of the desulphurization island, flows in through the lower part of the measuring buffer tank with the pH meter 3, flows out from the upper part, and then flows in from the lower part of the density meter 4, flows out from the upper part, and leads to the trench...

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Abstract

The invention relates to a measure apparatus of a flue gas desulphurization absorbing tower, a slurry pH meter and a densitometer by using a wet method and its method, which belongs to the field of desulphurization with environmental protection. The measure apparatus comprises a desulphurization island absorbing tower, a pH meter container, the pH meter, the densitometer and a slurry main pipe in the desulphurization island absorbing tower. According to the invention, the measure method employs an automatic control apparatus, so that the instrument on-line rate and the accuracy are raised, the workload for on-site apparatus maintenance can be minimized and the energy consumption is reduced.

Description

Technical field [0001] The invention relates to the field of environmental protection desulfurization, in particular to a wet flue gas desulfurization absorption tower slurry pH meter, a density meter measuring device and a method thereof. Background technique [0002] Wet flue gas desulfurization in coal-fired power plants has the highest desulfurization rate and is the most widely used technology. This technology uses limestone slurry (made by grinding limestone with water) as a desulfurizer, and the sulfur dioxide (molecular formula SO) contained in the flue gas is treated in the absorption tower (chemical reaction device). 2 ) Spray washing to make SO in the flue gas 2 Reaction to form CaSO 4 , The key point of the reaction is Ca 2+ Formation, and Ca 2+ The formation of H + The pH value of the slurry is in the range of 5.8-6.2, which is most conducive to the decomposition of limestone slurry to form Ca 2+ Therefore, the pH value of the slurry can be controlled well to realize ...

Claims

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Application Information

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IPC IPC(8): B01D53/80B01D53/50G01N9/00G01N33/00
Inventor 沈刚顾华晶
Owner 武汉光谷环保科技股份有限公司
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