【摘要】：為了有效處理含水率較高且體積龐大的有機(jī)污泥,實(shí)現(xiàn)與低溫?zé)峤夤に囅嘟Y(jié)合,進(jìn)一步完善污泥處理與利用知識體系,研究了干燥溫度與升溫速率對污泥干燥過程中的質(zhì)量、失重率、含水率、熱量的影響。同時研究了不同溫度下污泥的干燥速率和含水率的變化規(guī)律,并建立了污泥干燥的數(shù)學(xué)模型。實(shí)驗結(jié)果表明:從不同干燥特性曲線可以看出,污泥的干燥特性符合理論的3個階段,預(yù)熱時間極短,恒速階段持續(xù)時間也不長,最后的減速階段時間最長。干燥終溫為240℃時污泥干化時間最短,速率最快。二次模型的預(yù)測值與實(shí)測值決定系數(shù)為0.992 4,均方根誤差和殘差平方和分別為0.035和0.032,與其他數(shù)學(xué)模型相比,二次模型對污泥干燥過程的擬合優(yōu)度最高。
[Abstract]:In order to effectively treat organic sludge with high moisture content and large volume, and combine with low temperature pyrolysis process, the knowledge system of sludge treatment and utilization was further improved, and the quality of drying temperature and heating rate on sludge drying process was studied. Weight loss, moisture content, and heat. At the same time, the variation law of sludge drying rate and moisture content at different temperature was studied, and the mathematical model of sludge drying was established. The experimental results show that the drying characteristics of sludge accord with the three stages of theory, the preheating time is very short, the duration of the constant speed stage is not long, and the time of the final deceleration stage is the longest. The sludge drying time is the shortest and the speed is the fastest when the final drying temperature is 240 鈩，

本文編號：2268392