System and process for preparing organic compound fertilizer from waste

• Main Authors: CHEN WEI, WANG DONGHUI, ZHENG SHIHAO, ZHAO XINLEI, SONG ZHANXING, CHEN ZHIYONG, SHA HUI, ZHENG FENGYUN, ZHANG XIAOPEI, HUANG LIBAO, ZHAO HONGYANG
• Format: Patent
• Language: Chinese; English
• Published: 13.06.2023
• Subjects: CHEMISTRY; FERTILISERS; FERTILISERS CHARACTERISED BY THEIR FORM; MANUFACTURE THEREOF; METALLURGY; MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENTSUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVINGA SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES,SOIL-CONDITIONERS, WETTING AGENTS; ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE

The invention belongs to the technical field of organic waste recycling, and particularly relates to a system and a process for preparing an organic compound fertilizer from waste. The system for preparing the organic compound fertilizer from the waste comprises a dryer, a crusher, and a reactor, a screw granulator, a powder coating machine and a screening device which are sequentially communicated through pipelines. According to the process for preparing the organic compound fertilizer by using the wastes, the sodium carbonate mother liquor, the thiourea dioxide mother liquor and the plant ash are used as raw materials, the organic compound fertilizer is prepared through the procedures of granulation, powder coating, screening, drying and the like, and the process has a relatively high raw material utilization rate. According to the system, large particles and small particles are selected through the screening device, the large particles are fed into the crusher to be crushed again, and the utilization rate