Scale and corrosion inhibitor performance test dynamic simulation device and control method thereof

Abstract

The invention relates to a scale and corrosion inhibitor performance test dynamic simulation device and a control method thereof. The scale and corrosion inhibitor performance test dynamic simulationdevice comprises a controller, a pressure kettle, a discharging unit, a feeding unit and a pressure regulating unit, wherein the controller is connected with the pressure kettle, the discharging unit,the feeding unit and the pressure regulating unit; the feeding unit is connected with the pressure kettle and feeds materials into the pressure kettle, and the feeding unit comprises a feeding material metering device used for metering the feeding amount; the discharging unit is connected with the pressure kettle and used for receiving discharged materials of the pressure kettle, and comprises adischarging material metering device used for metering the discharging amount; and the pressure regulating unit is used for monitoring and regulating the pressure in the pressure kettle. According tothe device, the discharging speed and test pressure can be set, the heating power of the pressure kettle can be regulated automatically according to the discharging speed, and as the feeding materialand discharging material are metered and controlled simultaneously, the feeding speed and discharging speed are kept balance, intensive fluctuation of pressure or temperature in the test process can be avoided, and the total amount of concentrated materials in the pressure kettle can be maintained stable.

Description

technical field [0001] The invention relates to the technical field of performance testing of scale and corrosion inhibitors, in particular to a dynamic simulation device for performance testing of scale and corrosion inhibitors and a control method thereof. Background technique [0002] In heat exchange equipment such as boilers and heat exchangers, water is the most commonly used heat transfer carrier. In order to prevent impurities in water from scaling on the surface of boilers or heat exchangers or corroding with metals, it is necessary to add a small amount of scale and corrosion inhibitors to the water transfer water body. Trace scale and corrosion inhibitors can play a significant role and are an important guarantee for the safe and economical operation of heat exchange equipment. [0003] The research and development process of new scale and corrosion inhibitors needs to evaluate the scale and corrosion inhibition performance of different formulations in order to s...

AI Technical Summary

Problems solved by technology

There are defects in the heating equipment of the static method 1: the triangular beaker cannot bear the pressure, so the temperature of the water after heating is lower than the boiling point (100°C) under normal pressure, and the operating temperature of the boiler is generally higher than 100°C, and there is a deviation between the test conditions and the actual situation ;Defect 2: The test temperature of water is low, lack of evaporation and concentration process, the test uses simulated water with high hardness, and the contrast effect before adding scale inhibitor or without adding scale inhibitor can be reflected

However, there are defects in this type of equipment: 1. The on / off of its replenishment pump is controlled according to the liquid level in the autoclave, and the liquid level limit has only two upper limit and lower limit (protection water level), and the liquid level reaches the lower limit Start the replenishment pump when the liquid level reaches the upper limit, and turn off the replenishment pump when the liquid level reaches the upper limit. This intermittent large-scale replenishment will cause large fluctuations in the temperature (or pressure) in the autoclave; 2. The heating power of the autoclave cannot be adjusted and cannot be adjusted. Adjust the heating power according to the liquid level, and the steam generation speed cannot be set

The defects of the fouling thermal resistance dynamic simulation device are: the water flowing in the tube does not undergo phase change (boiling), lacks the process of evaporation and concentration, and is different from the actual operating conditions of the boiler

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