Calculation and Development of the Device for Determining the Beginning, End and Extremum of Peak at the Output of the Adsorption Unit

Abstract

It is known that the solution of such fundamental problems as the direct conversion of thermal and solar energy into electrical energy, the creation of superconducting materials, thermally stable materials and the development of the nanotechnology industry is directly dependent on the solution to the problem of obtaining highly pure substances. In practice, purification systems such as distillation columns, centrifuge-based devices, surface tension-based devices and adsorption-based devices are used to purify substances from impurities. The development of technology currently predisposes to the use of adsorption separation of the method in the analysis of multicomponent mixtures in many industries and the national economy and is gradually taking the place of traditional chemical and physico-chemical methods. The production of highly pure substances with a percentage of microimpurities less than 10-6% is possible only when using an adsorption unit with a large number of columns used. In industrial production, the number of columns in this installation is from 5000 to 10000 pieces. In this case, the signals coming from the adsorption unit in the form of a peak described by the Gauss function characterize the percentage of the test substance and to automate this process, the necessary condition is the use of devices for processing this signal. The efficiency of adsorption methods is significantly increased due to the automation of data processing at the output of the adsorption installation, which develops mainly in three directions: the use of universal general purpose personal computers for processing, the use of specialized computing devices. In general, the automation process involves pairing the adsorption unit with a personal computer, and to achieve this, it is necessary to use such devices for processing signals at the output of the adsorption unit as amplifiers, analog-to-digital converters, and a device for determining the beginning and end of the peak. This article is devoted to the calculation and development of a device for determining the beginning and end of a peak at the output of an adsorption tube. The developed device can be used in the production of high-purity silicon. Having available silicon of high degree of purification there is a possibility of production of such electronic devices as-the diode, the transistor, chips and other various semiconductor devices which essentially differ on the qualitative indicators. Along with this, the use of materials with a high degree of purification gives ample opportunities to improve the quality of manufacturing solar cells and LEDs of increased power.