Inovação tecnológica no processo de secagem de arroz em casca com baixas temperaturas

Abstract

In order to keep the quality and conservation of the harvested grains , the farmers and the owners of beneficiary industries search of new technologies that favor the maintenance of their agricultural production , either in the dryving or in the conservation and the reduction of the time that the producit stays in the company. The purpose of this work is demonstrate through a comparative the benefits and the operating costs of the drying with fixed air at low temperatures and control of the relative humidity in silos or warehouses. The collected data in the company Coradini Alimentos Ltda., located on Br 293 Km 250,2 in Dom Pedrito -RS, where the author accompanied the installation process of new drying techniques and grain storage that aimes the maintenance and conservation of the product quality received in its unit. The operational process and of the installation of the necessary equipment for this purpose, that was followed by the automation of the turbines , installation of the hoods and the eletric spreaders of grains , will provide gains at the time of commercialization. We note that the energy consumption of the gas system is 27,07% higher then the conventional system, but in relation to the permanence time that the product stays in the unity , the gas system is so much lower compared to the other. In front of this, this cost may vary with the time of the drying as mentioned during the development of this work. Comparing the two systems and considering the proper proportions of time , the total cost of the energy per 50Kg bag in the conventional system is R$0,6456 and in the automated system is R$0,4960 and the gas consumption is R$0,3994. Thus we concluded that this new process appears as option to distribute this flow of receiving because they are dryers silos with heated air by liquefied petroleum gas, unlike conventional this one can get grain with high moisture because dries with natural air only with the fixed moisture , causing the grains to achieve the desired moisture in less time without run the risk of losing the physical qualities of the product, which may occur in the conventional drying system with natural air, where the moisture must be controlled , obeying the hygroscopic balance of the grains so there is deterioration or loss in the quality.