Continuous automatic measuring device of slurry density, and use method thereof

Abstract

The invention discloses a continuous automatic measuring device of slurry density, and relates to the field of liquid density measurement. The continuous automatic measuring device comprises a measuring tank, a liquid inlet pipe and a weighing device; the measuring tank is connected with a recovery tank through an overflow pipe, and the measuring tank is connected with the overflow pipe; the top of the liquid inlet pipe is connected with a slurry inlet pipe through a slurry inlet valve and is connected with a process water inlet pipe through a process water inlet valve; a reflection plate is arranged at the bottom of the liquid inlet pipe; and a shock absorber is arranged at the bottom of the weighing device. The continuous automatic measuring device disclosed by the invention is simple instructure, convenient to disassemble, easy to install and convenient to maintain. The invention further relates to a use method of the continuous automatic measuring device of slurry density.

Description

technical field [0001] The invention relates to the field of liquid density measurement, more specifically it is a continuous automatic measurement device for slurry density. The invention also relates to a method for using the continuous automatic measuring device for slurry density. Background technique [0002] As my country's environmental protection policies become more and more stringent, the emission standards for flue gas emitted by waste-to-energy plants are also getting higher and higher. To remove SO from flue gas from waste-to-energy plants 2 At present, semi-dry process is often used for treatment; the basic principle of semi-dry process is: alkaline slurry (mainly lime slurry) is in contact with high-temperature flue gas, and the acid gas in the flue gas reacts with slaked lime and is absorbed , the water in the slurry contacts with the high-temperature flue gas and is vaporized and evaporated to realize the cooling of the flue gas; the concentration of the l...

AI Technical Summary

Problems solved by technology

[0003] At this stage, the differential pressure level method is often used to measure the density of lime slurry in the flue gas purification process. The principle is to convert the density of the slurry by measuring the differential pressure of a certain height slurry (ρ=P / gh). Due to the disturbance of the stirrer and other devices, the differential pressure signal is often unstable, which in turn affects the density measurement; using the solution weight and volume to measure the density will greatly improve the accuracy of the measurement

[0004] Application number: 201820973553.9, the utility model patent titled "A Device for Serum Density Measurement" discloses a device that calculates the density of the slurry based on the weight of the slurry entering the measurement cylinder by discharging the slurry into a measuring cylinder with a certain volume , although the device can measure the slurry density simply and quickly, but because the device adopts the method of hanging weighing, it is easy to be interfered by the external environment in practical application, resulting in inaccurate measurement; in addition, considering that there will be Part of the solution exists, so its defined volume is also in error

[0005] Patent No.: 201810178782.6, the invention patent titled "Slurry Density Measuring Device" discloses a weighing device through a pressure sensor, which solves the problem that the measurement is easily affected by external vibrations, and uses the density reference method to avoid measurement The error problem caused by the inaccurate volume of the slurry in the bucket; but there are still deficiencies such as complex device and difficult to achieve continuous measurement

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