| 有机垃圾水解固相残渣制备RDF及性能优化 |
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| 引用本文： | 向虹霖,刘力,梁国宾,张焕伟,李聪明,周畅,韩思宇,蒋建国.有机垃圾水解固相残渣制备RDF及性能优化[J].环境工程,2021,39(3):189. |
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| 作者姓名： | 向虹霖 刘力 梁国宾 张焕伟 李聪明 周畅 韩思宇 蒋建国 |
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| 作者单位： | 1. 清华大学 环境学院, 北京 100084; |
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| 基金项目： | 国家重大科技专项“污泥与废弃物处置及资源化利用技术集成与综合示范”（2017ZX07202005）。 |
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| 摘 要： | 通过对干化后典型有机废弃物生物水解固相残渣制备垃圾衍生燃料（RDF）颗粒的优化，研究了含水率及添加剂对RDF物理化学性质的影响。以果蔬、厨余和园林等典型有机废弃物生物水解后的固相残渣作为原料，经生物干化处理后，在不同含水率及不同比例添加剂条件下，对其制备RDF的抗压强度、膨胀率、成型率以及热值等指标进行对比研究，结果表明:当含水率为30%时，RDF颗粒成型率可达到99.47%；含水率为25%左右时，RDF颗粒的成型性能更好，抗压强度为8.28 MPa，膨胀率为40.41%；当含水率为10%时，低位热值为15.98 MJ/kg，满足固体回收燃料3级标准（EN 15359—2011《固体燃料的恢复和规范》）。在RDF制备中，添加5%的硅酸钠粉末可有效提升其成型效果，且灰分含量可控制在8.55%左右，能更好地满足RDF颗粒储存、运输以及燃烧的需求。
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| 关 键 词： | 垃圾衍生燃料(RDF) 含水率 抗压强度 热值 |
| 收稿时间： | 2020-03-01 |
PREPARATION OF RDF BY HYDROLYSIS RESIDUES FROM ORGANIC WASTE AND PROPERTIES OPTIMIZATION |
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| Affiliation: | 1. School of Environment, Tsinghua University, Beijing 100084, China;2. Urban Administration & Enforcement Bureau of Bao'an Distinct, Shenzhen 518101, China;3. Urban Aesthetics & Environment Integrated Management Service Center of Bao'an Distinct, Shenzhen 518101, China |
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| Abstract: | The effect of moisture content (MC) and additives on the physicochemical properties of RDF was studied by optimizing the preparation of refuse derived fuel (RDF) from hydrolysis residues of organic waste after bio-drying. The experiment set different gradients of MC and additives using bio-drying treated hydrolysis residues from typical organic wastes such as fruits and vegetables, kitchen and garden. The comparison of the compressive strength, expansion rate, forming rate and calorific value showed that the formability of RDF with MC of 25% would be the best, whose compressive strength was 8.28 MPa and expansion rate was 40.41%; while the shaping rate with MC of 30% could be 99.47%. Therefore, the preparation of RDF in MC range of 25%~30% would be better. When MC was 10%, LHV could be 15.98 MJ/kg, which met the level 3 of the Solid Recovered Fuels-Specifications and Classes. Addition of 5% Na2SiO3 powder in the preparation of RDF could effectively improve its formability, and ash content could be controlled at about 8.55%, meeting the requirements of the storage, transportation and combustion of RDF. |
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