Bio-oil from thermo-chemical hydro-liquefaction of wet sewage sludge
Bio-oil from thermo-chemical hydro-liquefaction of wet sewage sludge
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DOI：
10.1016/j.biortech.2015.03.093
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发表时间：
2015-07-01
影响因子：
11.4
通讯作者：
Kampare, Ruta
中科院分区：
文献类型：
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作者：
Malins, Kristaps;Kampars, Valdis;Kampare, Ruta
研究了污泥与水的重量比（1/0-1/15）、反应温度（200-350℃）、初始H-2压力（2.0-11.0 MPa）、停留时间（10-100 min）和催化剂类型（Na2CO3、Raney镍、FeSO4、MoS2）等实验条件对污泥加氢液化过程的影响。高用量的水通过提高生物油收率和总转化率来改善污泥加氢液化过程。在初始H2压力为5.0 MPa、反应温度为300℃、停留时间为40 min的条件下，污泥生物油的收率最高，为47.79 wt.%。在此实验条件下，在污泥与水质量比为1/5、催化剂(FeSO4) -干SS质量分数为5 wt.%、搅拌转速为350 rpm的条件下，得到的生物油能量回收率最高（69.84%），总转化率最高（70.64%），热值为35.22 MJ/kg。(C) 2015 Elsevier Ltd.版权所有。
The present work demonstrates the influence of experimental conditions such as weight ratio of sewage sludge to water (1/0-1/15), reaction temperature (200-350 degrees C), initial H-2 pressure (2.0-11.0 MPa), residence time (10-100 min) and type of catalysts (Na2CO3, Raney nickel, FeSO4, MoS2) on hydro-liquefaction process of sewage sludge. High amount of water improves the hydro-liquefaction process of sewage sludge by increasing the yield of bio-oil and the total conversion. The highest yield of bio-oil (47.79 wt.%) from sewage sludge was obtained with initial H2 pressure 5.0 MPa, reaction temperature 300 degrees C, and residence time 40 min. Under these experimental conditions, using weight ratio of sewage sludge to water 1/5, catalyst (FeSO4) - 5 wt.% of dry SS, mixing speed 350 rpm the obtained bio-oil had the highest energy recovery (69.84%), total conversion (70.64%) and its calorific value was 35.22 MJ/kg. (C) 2015 Elsevier Ltd. All rights reserved.