CAJ | 학술논문

利用超/近临界水具有的特性，探索固体废弃物在超/近临界水中的再资源化技术。由于固体废弃物的排出量非常庞大，只有同时引入连续过程才能进行有效处理。建立了一套近中试规模的固体物料在高温高压水中连续分解的反应装置，固体物料与水混成浆料供给反应器，解决了某些固体物料向高温高压反应器中的连续输送问题，浆料的固含量可达10%(wt)以上。并对模式物质--纤维素和木质素；实物--米糠、豆腐渣和稻壳等进行了连续分解实验，运行结果稳定。本工作证实了通过将固体废弃物与水混成浆料的方式，实现固体废弃物在超/近临界水中连续处理的可能性。
이용초/근림계수구유적특성，탐색고체폐기물재초/근림계수중적재자원화기술。유우고체폐기물적배출량비상방대，지유동시인입련속과정재능진행유효처리。건립료일투근중시규모적고체물료재고온고압수중련속분해적반응장치，고체물료여수혼성장료공급반응기，해결료모사고체물료향고온고압반응기중적련속수송문제，장료적고함량가체10%(wt)이상。병대모식물질--섬유소화목질소；실물--미강、두부사화도각등진행료련속분해실험，운행결과은정。본공작증실료통과장고체폐기물여수혼성장료적방식，실현고체폐기물재초/근림계수중련속처리적가능성。
A pilot-scale apparatus for continuous treatment of solid wastes by supercritical and near-critical water reactions was set up. A high-pressure slurry supplying system was developed to feed the solid waste/water slurries continuously. The apparatus features temperature up to 600℃, pressure up to 40MPa, residence time from 24s to 15min, maximum amount of slurry supply 2.4 L·h-1, maximum content of slurry up to 10%(wt) and resistance to corrosion. Long-time runs of decomposition of model substances(cellulose and lignin), real agricultural wastes(rice hull, rice bran, and bean curd residue) were made. Steady results were obtained. The possibility of continuous treatment of solid wastes by supercritical and near-critical water reactions was confirmed.