Gasification of Sewage Sludge in a Rotary Kiln Reactor – A Case Study with Incorporation of Sewage Sludge Ash in Brick Production

IF 1.6 4区 生物学 Q4 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Chemical and Biochemical Engineering Quarterly Pub Date : 2022-04-11 DOI:10.15255/cabeq.2021.2030
Anđelina Bubalo, D. Vouk, Danica Maljković, T. Bolanča
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引用次数: 1

Abstract

The gasification of sewage sludge (SS) was studied in a semi-industrial pilot plant consisting of a rotary kiln reactor. The gasification process was preceded by drying the SS in an integrated tubular rotating structure with built-in worm conveyors, to increase the dry matter (DM) content in the SS (> 90 wt.%). The released hydrogen-rich syngas from the gasification process of SS had low heating value (LHV) of approximately 8.83 MJ N –1 m –3 (equal to 2.45 kWh N –1 m –3 ) due to the high content of combustible gases H 2 (41.5 vol.%) and CH 4 (3.2 vol.%). Also investigated was the incorporation of sewage sludge ash (SSA) generated in the process of gasification as a partial substitute for clay in the production of clay bricks. Amounts of 5 wt.%, 10 wt.%, 20 wt.% of clay were replaced by SSA. By incorporating SSA at 5 wt.%, the new brick product achieved 4.5 % higher compressive strength compared to the control brick.
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污水污泥在回转窑反应器中的气化研究——以污泥灰掺入制砖为例
在由回转窑反应器组成的半工业中试装置上对污水污泥的气化进行了研究。气化过程之前,在带有内置蜗杆输送机的集成管状旋转结构中对SS进行干燥,以增加SS中的干物质(DM)含量(> 90wt .%)。由于可燃气体h2 (41.5 vol.%)和ch4 (3.2 vol.%)含量高,SS气化过程释放的富氢合成气的热值(LHV)较低,约为8.83 MJ N -1 m -3(等于2.45 kWh N -1 m -3)。还研究了在煤气化过程中产生的污水污泥灰(SSA)作为粘土砖生产中粘土的部分替代品的掺入。用SSA代替5 wt.%、10 wt.%、20 wt.%的粘土。与对照砖相比,新砖产品的抗压强度提高了4.5%。
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来源期刊
Chemical and Biochemical Engineering Quarterly
Chemical and Biochemical Engineering Quarterly 工程技术-工程:化工
CiteScore
2.70
自引率
6.70%
发文量
23
审稿时长
>12 weeks
期刊介绍: The journal provides an international forum for presentation of original papers, reviews and discussions on the latest developments in chemical and biochemical engineering. The scope of the journal is wide and no limitation except relevance to chemical and biochemical engineering is required. The criteria for the acceptance of papers are originality, quality of work and clarity of style. All papers are subject to reviewing by at least two international experts (blind peer review). The language of the journal is English. Final versions of the manuscripts are subject to metric (SI units and IUPAC recommendations) and English language reviewing. Editor and Editorial board make the final decision about acceptance of a manuscript. Page charges are excluded.
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