NGHIÊN CỨU CHẾ TẠO HỆ THỐNG SẤY KHÔNG SỬ DỤNG CỦI ĐỐT ỨNG DỤNG VÀO SẢN XUẤT THUỐC LÁ Ở VIỆT NAM

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Tác giả: Đức Nam Đỗ, Công Đức Nguyễn, Quốc Uy Nguyễn, Trọng Hiếu Nguyễn, Văn Chương Tạ, Đại Nghĩa Trần

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Tạp chí Năng lượng Nhiệt, 2022

Mô tả vật lý: tr.24-31

Bộ sưu tập: Metadata

ID: 333901

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Drying is the most important stage in tobacco processing because it determines tobacco's colour, taste, and micronutrients. In Vietnam, tobacco is often dried in manual wood-burning kilns with low efficiency, so in the tobacco harvest season, there are cases of over-exploitation of forests in some localities for firewood. To solve the above problem, this paper presents the research and manufacture of a high-performance firewood-free tobacco drying system. The drying system is calculated appropriately in terms of energy and can accurately control two important parameters in the drying process, including temperature and humidity, suitable for each drying stage. In addition, the new drying system also has a high degree of automation, which reduces labour and creates more stable quality drying products. Analysis of the quality of dried products from the new system shows that they are better than the traditional systems. With low energy costs and good quality of dried products, the new drying system has the potential to replace the old systems to improve the quality of dried products and limit deforestation in some areas.Sấy là công đoạn quan trọng nhất trong chế biến thuốc lá do nó quyết định màu sắc, mùi vị, các vi chất trong lá thuốc. Ở Việt Nam, thuốc lá thường được sấy trong các lò sấy thủ công bằng củi với hiệu năng thấp nên vào mùa thu hoạch thuốc lá có hiện tượng khai thác rừng quá mức ở một số địa phương để lấy củi đốt. Để góp phần giải quyết vấn đề trên, bài báo này trình bày việc nghiên cứu chế tạo một hệ thống sấy thuốc lá không dùng củi đốt với hiệu năng cao. Hệ thống sấy được tính toán phù hợp về mặt tiêu thụ năng lượng và có khả năng điều khiển chính xác hai thông số quan trọng của quá trình sấy là nhiệt độ và độ ẩm phù hợp cho từng giai đoạn sấy. Ngoài ra, hệ thống còn có khả năng tự động hóa cao, giúp giảm nhân công lao động và tạo ra sản phẩm sấy có chất lượng ổn định hơn. Phân tích chất lượng sản phẩm sấy từ hệ thống mới cho thấy có nhiều cải thiện so với các hệ thống truyền thống. Với chi phí năng lượng thấp và chất lượng sản phẩm sấy tốt, hệ thống sấy mới này hứa hẹn thay thế các hệ thống sấy cũ kém hiệu quả nhằm nâng cao chất lượng sản phẩm sấy cũng như hạn chế nạn chặt phá rừng ở một số địa phương.

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