An intelligent lime activity testing device and control method

Abstract

The invention relates to an intelligent test device and a control method of lime activity degree based on acid base neutralization titration and is applied to industries such as metallurgy, chemical engineering, calcium carbide, chlor-alkali, building, desulfurization of a thermal power plant. The steps are as follows: calibrating an acid base solution; calibrating a Ph sensor; initializing an experiment; controlling stirring rotating speed and water temperature; weighing a lime test sample; putting the lime test sample into a reactor and performing digestion reaction; automatically storing, analyzing and calculating experiment data; displaying a test result and outputting data. The test device is provided with a temperature controller (1), a stirring controller (10), a flow rate controller (11) and a system controller (9) which is connected with a human-computer interaction unit (8), the temperature controller (1), the stirring controller (10), the flow rate controller (11) and an output peripheral component (14).

Description

technical field [0001] The invention relates to an inspection device and a control method for the activity degree of intelligent lime by an acid-base neutralization titration method. The invention belongs to the technical field of material performance inspection, relates to the activity degree inspection of active lime, and has very important significance especially for the activity degree inspection of highly active lime. Widely used in metallurgy, chemical industry, calcium carbide, chlor-alkali, construction, thermal power plant desulfurization and other industries. technical background [0002] Activated lime is a material with lively chemical properties and strong reaction ability. It is calcined from limestone at high temperature, and its chemical formula is CaO. An important measure of its quality is "activity". Activity is an index to characterize the digestion reaction speed of lime, that is, within a certain period of time, it is expressed by the volume of 4 mol / ...

AI Technical Summary

Problems solved by technology

[0005] The current metallurgical industry standard lime activity detection method is completely manual, and its defects mainly include: 1. Human operation errors are large, and errors will inevitably occur, which seriously affects the accuracy of the active lime activity detection results

2. The pH value of the color range of the phenolphthalein indicator is 8.2 to 10, and the equivalence point of the neutralization reaction of the solution is within the color range, not near the pH value of the neutral point of 7; and when the pH value of the solution is greater than 10, the phenolphthalein The reagent is colorless and loses the function of the indicator, so it causes a large error in the control of the neutralization reaction

3. In the experiment, many places were exposed to hydrochloric acid, which has a potential burning danger to the operator's skin

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