Slurry multi-stage rotation comprehensive measurement method and device

Abstract

The invention discloses a slurry multi-stage rotation comprehensive measurement device which comprises a desulfurization tower, a first valve, a measurement device connected with the desulfurization tower through the first valve, a first branch pipe, a second branch pipe, a third branch pipe and a nested slurry spraying device, a desulfurization tower inlet is formed in the side wall of the desulfurization tower, and the desulfurization tower is provided with a desulfurization tower outlet. The first valve is connected with the desulfurizing tower, the first branch pipe, the second branch pipe and the third branch pipe are all connected with the first valve, each of the first branch pipe, the second branch pipe and the third branch pipe is provided with a slurry conveying valve, and the first branch pipe, the second branch pipe and the third branch pipe are connected with the nested slurry spraying device. And the nested guniting device is positioned at the bottom of the measuring device. The invention has the following advantages: 1, no mechanical rotating part is used, so that the energy consumption is saved; 2, the pressure transmitter and the PH meter are arranged on the measuring device, so that the abrasion of the equipment is avoided; and 3, the pressure transmitter and the PH meter are convenient to maintain and replace.

Description

technical field [0001] The invention relates to a multi-stage rotary comprehensive measuring method and device for slurry, and relates to a device for measuring the density value and pH value of limestone / gypsum slurry in a desulfurization system of a thermal power plant. Background technique [0002] With the increasingly serious air pollution problem, flue gas desulfurization has become an indispensable measure in industrial production. Wet flue gas desulfurization is the most widely used and mature technology among various desulfurization processes. 90% of existing coal-fired power plants use limestone / gypsum wet desulfurization technology. The density and pH value of the slurry in the desulfurization tower are two important indicators for the operation control of the desulfurization system, and are also important factors that directly affect the desulfurization efficiency of the coal-fired unit. Therefore, it is necessary to accurately measure the density and pH value of...

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Problems solved by technology

[0004] First, install a pH meter and a density meter on the tower body of the desulfurization tower, but after years of practice, it has been proved that this method is not effective and difficult to repair and maintain, so it is rarely used;

[0005] Second, the density meter is installed on the bypass branch of the outlet pipeline of the gypsum discharge pump. The disadvantage of this method is that due to the high outlet pressure of the gypsum discharge pump, the density meter wears quickly and the service life is short. At the same time, the gypsum discharge pump needs to run continuously, increasing Reduce the power consumption of the gypsum discharge pump, and increase the cost of equipment maintenance

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