Source-taking apparatus and method for measuring pH value of liquid in flue gas desulfurization absorption tower
A technology of desulfurization absorption tower and absorption tower, which is applied in the direction of sampling devices, chemical instruments and methods, separation methods, etc., to achieve the effects of cleaning slurry, ensuring measurement accuracy, and saving energy
Active Publication Date: 2008-07-16
国能朗新明环保科技有限公司
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Problems solved by technology
[0003] The purpose of the present invention is to provide a source device for measuring the pH value of the liquid in the flue gas desulfurization absorption tower, to solve the problem that the contact of the pH meter is avoided from being worn and polluted by the gypsum crystals in the slurry during operation; and to solve the problem that no power equipment is needed , still can guarantee the problem of measurement accuracy
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[0019] Examples see figure 1 The source device for measuring the liquid pH value in the flue gas desulfurization absorption tower has a lower source port 9 at the bottom of the absorption tower wall 6, and an upper source port 10 at the upper part of the absorption tower wall.
[0020] A lower connecting pipe 1 is inserted downwardly in the above-mentioned lower source opening 9, and the inclination angle a between the above-mentioned lower connecting pipe 1 and the wall of the absorption tower is 15°. An upper connection pipe 2 is inserted into the upper access port 10 inclined upwards, and the inclination angle β between the upper connection pipe 2 and the horizontal line is 18°. The upper connection pipe 2 is connected with the upper connection shut-off valve 4 outside the absorption tower, the lower connection pipe 1 is connected with the lower connection shut-off valve 3 outside the absorption tower, and the upper connection pipe 2 is communicated with the upper part of t...
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The invention relates to a source device for measuring pH value of liquid inside a flue gas desulfurization absorption tower and a method thereof. A lower source opening is arranged at the lower part of a tower wall of the absorption tower, while an upper source opening is arranged at the upper part of the tower wall of the absorption tower. The lower source opening is internally inserted with a lower connecting tube slant downwards, while the upper source opening is internally inserted with an upper connecting tube slant upwards; the upper connecting tube is connected with a shut-off valve thereof, but the lower connecting tube is connected with a shut-off valve thereof; the upper connecting tube is communicated with the upper part of the lower connecting tube, a flushing port is arranged below the lower part at the interface part of the two connecting tubes where the lower connecting tube located, and a fluidized tube is formed at a tube section from the interface part between the lower connecting tube and the upper connecting tube to a back cut of the lower connecting tube. A back cut of the fluidized tube is provided with a top cap, a contact terminal of a pH meter is inserted downwards inside the fluidized from the top cap, and the upper end of the pH meter is connected with the top cap through a connecting component. Under the action of gravity of slurry inside the absorption tower, the slurry is circled naturally, flushing water flushes gypsum crystal accumulated on the contact terminal of the pH meter through a flushing port, which can avoid abrasion and pollution and does not need any power equipment.
Description
(1) Technical field [0001] The invention relates to a measuring device for the liquid pH value in a limestone / lime-gypsum wet flue gas desulfurization absorption tower. (2) Background technology [0002] The measurement of the pH value of the absorption tower slurry in the limestone / lime-gypsum coal-fired boiler flue gas desulfurization system is the key to the automatic control of the desulfurization system. At present, the measurement of the pH value is to use a gypsum slurry pump to forcibly circulate the slurry, and install a pH meter for measuring the pH value of the slurry on the slurry pipeline leading to the flue gas desulfurization absorption tower or in the circulation pool. The slurry contains a large number of gypsum crystals. This measurement method cannot effectively protect the pH meter, so that the pH meter contacts are often worn and polluted by the gypsum crystals in the slurry during operation, which reduces the measurement accuracy. In order to solve thi...
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Login to View More IPC IPC(8): B01D53/80G01N1/10
Inventor 陈志强马建文马文静李强
Owner 国能朗新明环保科技有限公司