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Tác động của Torrefaction đến quá trình khí hóa hơi của sinh khối trong phản ứng lò khí hóa hai lớp bột - Nghiên cứu mô phỏng quy trình
Tóm tắt
Trong nghiên cứu này, một quy trình khí hóa hơi được xây dựng với phản ứng lò khí hóa hai lớp bột sử dụng mô phỏng quy trình thương mại và được xác thực bằng dữ liệu thực nghiệm để điều tra hành vi của gỗ vân sam thô và đã torrefied trong quá trình chuyển đổi. Các tác động của torrefaction, nhiệt độ khí hóa và tỷ lệ hơi nước so với sinh khối đối với hiệu suất khí hóa gỗ vân sam được khảo sát. Các chỉ số khí hóa chính bao gồm thành phần khí sản phẩm và giá trị nhiệt, cũng như hiệu suất khí lạnh được nghiên cứu. Kết quả mô phỏng cho thấy cả hàm lượng H2 và CO2 trong khí sản phẩm đều giảm khi tăng nhiệt độ khí hóa hoặc giảm tỷ lệ hơi nước so với sinh khối. Ngược lại, hàm lượng CO lại có xu hướng trái ngược. Hơn nữa, việc tăng nhiệt độ khí hóa hoặc giảm tỷ lệ hơi nước so với sinh khối làm tăng giá trị nhiệt của khí sản phẩm nhưng giảm hiệu suất khí lạnh. So với nguyên liệu thô, gỗ vân sam đã torrefied cung cấp hàm lượng H2 thấp hơn nhưng hàm lượng CO cao hơn trong khí sản phẩm ở cùng điều kiện khí hóa. Tuy nhiên, việc khí hóa gỗ vân sam đã torrefied luôn mang lại giá trị nhiệt khí lạnh và hiệu suất cao hơn so với gỗ vân sam thô. Các giá trị tăng lên đạt tối đa 0.46 MJ/Nm3 cho giá trị nhiệt và 5.96% cho hiệu suất.
Từ khóa
#torrefaction #khí hóa hơi #sinh khối #lò khí hóa hai lớp bột #mô phỏng quy trìnhTài liệu tham khảo
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