Đánh giá ảnh hưởng của các yếu tố vận hành tháp đệm đến khả năng hấp thụ khí SO2
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Abstract
Air pollution caused by SO2 emissions from industrial activities is a major concern, significantly impacting human health and the environment. This study evaluates the efficiency of SO₂ removal using a wet scrubber, focusing on three key factors: packing layer height, the ratio of gas-liquid (L/G), and the type of absorption solution. The experiments were conducted under controlled conditions, with a gas stream temperature of 40 ± 1°C, pressure of 1 atm, and a specified inlet SO₂ concentration. The experiment results showed that the highest SO₂ removal efficiency (85.01 ± 1.19%) was achieved with a packing layer height of 0.7 m, an L/G ratio of 0.009, and a 0.05M NaOH solution. Findings indicate that these factors significantly affect SO₂ removal efficiency. To improve the technology of SO₂ removal from air pollution sources by the wet scrubber, further research conducted on other factors, such as packing material types, gas stream temperature, and pressure are necessary.
Tóm tắt
Ô nhiễm không khí do khí SO2 từ công nghiệp đang là vấn đề được quan tâm, gây ảnh hưởng nghiêm trọng đến sức khỏe và môi trường. Nghiên cứu này được tiến hành nhằm đánh giá hiệu quả xử lý khí SO2 bằng tháp đệm, tập trung vào ba yếu tố gồm chiều cao lớp vật liệu đệm, tỷ lệ khí - lỏng (L/G) và loại dung dịch hấp thụ. Thí nghiệm được thực hiện trong điều kiện có kiểm soát với nhiệt độ dòng khí 40 ± 1oC, áp suất 1 atm và nồng độ khí SO2 đầu vào. Kết quả nghiên cứu cho thấy hiệu suất xử lý SO2 cao nhất đạt 85,01 ± 1,19% ứng với trường hợp lớp vật liệu đệm dày 0,7 m, tỷ lệ L/G 0,009 và dung dịch NaOH 0,05M. Điều này chứng tỏ ba yếu tố trên ảnh hưởng đáng kể đến hiệu quả xử lý khí SO2. Để cải thiện công nghệ xử lý khí SO2 bằng tháp hấp thụ, việc nghiên cứu ảnh hưởng của các yếu tố khác như loại vật liệu đệm, nhiệt độ và áp suất dòng khí được thực hiện là rất cần thiết.
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