Desulfurization pump Introduction
TL(R) model desulfurization pump is the new generation high efficiency energy saving product
elaborately researched and developed by our company through absorbing the technical advantages from
same products at home and abroad, with reference to the technical specifications of flue gas desulfurization
project, aiming at the characteristic of FGD system of transporting medium through pump in thermal power
plant.
Construction of Desulphurization Pump
Detail parameter of Desulphurization
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Sewage electromagnetic flowmeter
1. For inorganic contamination, the electrode may be immersed in 0.1 mol/L dilute hydrochloric acid for 30 minutes, rinsed with pure water, and immersed in 3.5 MOL/L potassium chloride solution for 6 hours before use.
2, 4% hydrogen fluoride solution immersion 3 ~ 5s, remove with distilled water, then soaked in 0.1mol/L hydrochloric acid solution for several hours, rinse with distilled water, calibration.
3. The surface of platinum is heavily polluted by an oxide film. The surface of platinum or gold can be polished with toothpaste, then washed with pure water, and then immersed in 3.5MOL/L potassium chloride solution for 6 hours before use.
4. For organic oil and oil film contamination, the surface of platinum or gold can be washed with detergent and washed with pure water, and then immersed in 3.5MOL/L potassium chloride solution for 6 hours.
Sewage electromagnetic flowmeter electrode cleaning methods are as follows:
1. Electrochemical Methods Electrochemical phenomena exist in metal electrolytes in electrolyte fluids. According to the electrochemical principle, there is an interface electric field between the electrode and the fluid, and the interface between the electrode and the fluid is caused by the double electric layer existing between the electrode/fluid phase. The study of the electric field at the interface between the electrode and the fluid reveals that the molecules, atoms, or ions of the material have an enriched or poorly adsorbed phenomenon at the interface, and that most of the inorganic anions are surface-active substances that have typical ion adsorption laws and the surface of inorganic cations. Very little activity. Therefore, the electrochemical cleaning electrode only considers the anion adsorption. Adsorption of anions is closely related to the potential of the electrode. The adsorption takes place mainly in the potential range that is more positive than the zero charge potential, ie, the surface of the electrode with an opposite charge. On the surface of the electrode with the same charge, when the residual charge density is slightly larger, the electrostatic repulsive force is greater than the adsorption force, and the anion desorbs quickly. This is the principle of electrochemical cleaning.
2. Ultrasonic cleaning method Ultrasonic voltage of 45~65kHz generated by an ultrasonic generator is added to the electrode, so that the energy of the ultrasonic wave is concentrated on the contact surface between the electrode and the medium, so that the ability of the ultrasonic wave is used to crush the dirt and achieve the purpose of cleaning.
3. Electrical breakdown method This method uses AC high-voltage electricity periodically added between the electrode and the medium, generally adding 30~100V. As the electrode is attached, its surface contact resistance becomes larger, the applied voltage is almost concentrated on the attached matter, and the high voltage breaks down the attached matter and is then washed away by the fluid. The starting point for total safety, the use of electrical breakdown method must be in the flow meter interrupt measurement, the signal line between the sensor and the converter is disconnected, the power failure of the AC high voltage directly in the sensor signal output terminal for cleaning.
Sewage electromagnetic flowmeter If the measured medium is relatively polluted for a long time, then after the electromagnetic flowmeter has worked for a period of time, fouling will occur on the electrode. When the conductivity of the fouling material is different from the conductivity of the measured medium, measurement errors will occur. The attachment of sludge and oil to the electrode will also cause the meter output to swing and drift. Therefore, in this case we need to regularly maintain and clean the electromagnetic flowmeter electrodes.
September 13, 2019