SU928008A1 - Method of evaluating the thickness of dehydrated salt layer in industrial evaporators - Google Patents

Description

The invention relates to geophysics and can be used in chemical fermentation conditions for the preparation of salts in evaporators.

A known method for determining the thickness of a layer of dehydrated salt in industrial evaporators, including measurement by a mechanical measuring device 1.

The disadvantage of this method is low productivity and high labor intensity, especially in industrial evaporators of large areas due to the need to take more measurements to increase the representativeness of the results.

The aim of the invention is to increase labor productivity and measurement accuracy.

This goal is achieved by splitting the industrial evaporator into areas, some of which are taken as reference, then measuring the layer thickness with a mechanical measuring device only at reference areas and simultaneously performing thermal aerial photography of the entire evaporator area, then using the results obtained, a calibration graph is created. layer temperature from the thickness of this layer and the materials of the thermal aerial survey, taking into account the graph data, determine the thickness of the salt layer in the remaining areas of the industrial and a pair mate.

Figure 1 shows a thermal aerial photograph of an industrial evaporator for production from mirabilite.

10 (Agros UN2.0) - Mirabilite fluff (dehydrated sodium sulfate,); 2 is a calibration graph of the thickness of anhydrous sodium sulfate layer versus negative density.

15 thermal aerofilm.

Claims (1)

To implement the method, it is necessary to carry out a one-time thermal aerial survey in the infrared range of the electromagnetic waves of the investigated evaporator in a period close to the day maximum or night minimum of the surface temperature; at the same time with the thermal aerial survey, conduct ground measurements of the thickness of the dehydrated salt layer on the reference areas, which together should represent the entire measured thickness range of the dehydrated salt layer; to build a calibration graph of the temperature of the salt surface on the thickness of the layer of dehydrated salt; Determine the thickness of the dehydrated salt layer throughout the evaporator using the results of thermal aerial surveys and a calibration graph. Example. On the industrial. The evaporator used to produce sodium sulfate was thermally aired. At the reference area 1-5 on the ground, the thicknesses of sodium sulfate layers are measured, which are respectively 0; 0.5; 1.5; 3; 5 cm. A graph of the dependence of the thermal aerofilm negative density from the TCJiuuiHB layer of anhydrous sodium sulfate is plotted .. By comparing the density of the thermal aerofilm negative on the outer parts of the evaporator with a calibration chart, we determine the thickness of the dehydrated salt layer throughout the evaporator. For example, at points 6 and 7, it is 1.5 and 5 cm. The implementation of the proposed method allows to obtain operational information about the speed of dehydration of salt and the presence of its supply within the evaporator for the purpose of rational use of technical equipment when shooting dehydrated salt. Fig. 1 is a thermal aerial photograph of a portion of an industrial evaporator, whose useful area is more than 1.5 km. The entire area of this evaporator is divided by drainage ditches into individual cells whose dimensions are on average 150x50 m. The number of cells on this evaporator is more than 200. To obtain representative results within kg1 of each cell, it is necessary to take at least 10 measurements of the thickness of the dehydrated salt layer, for which It takes about 5 minutes (taking into account cell size). To measure the thickness of the dehydrated salt layer within the entire evaporator, a time of about 1000 minutes is required. or more than 16 person / hour, not counting the time for processing the measurement results. If one considers that the dehydrated salt’s release rate is approximately one centimeter per day, then to obtain operational data, large size industrial evaporators (several tens of square kilometers) require simultaneous operation of a large number of meters. At the same time, thermal aerial survey of such evaporators lasts 20-30 minutes. The same time should be taken by measurements at 4-5 reference sites. The time for further processing of the results of thermal aerial surveys under normal conditions does not exceed 2-3 hours. The method does not require special refinement. Claim Method A method for determining the thickness of a layer of dehydrated salt in industrial evaporators, including measurement with a mechanical measuring device, characterized in that, in order to increase labor productivity and measurement accuracy, an industrial evaporator breaks i: a sections, some of which are taken as reference, are then measuring the thickness of the salt layer with a mechanical measuring device on the reference areas and at the same time making a thermal aerial survey of the entire evaporator area, then building alibrovochny chart for the results obtained depending on the thickness of the bed temperature of the layer, and material with the thermal aerial traffic data determined thickness of the salt layer on the rest of the industrial evaporator. Sources of information taken into account during the examination 1. K.P. Bulanov. and others. Ways of development of sulphate production at the Karabogassulfate plant, - Problems of the complex utilization of mineral wealth of Kara-Bogaz-Gol. Ashgabat, Publishing House of the Academy of Sciences of the TSSR, 1959, p. 25-29 (prototype). 17L / / 1.6ff ./ X x X 1.50. w IM l 7 th / i.