硝基高塔造粒技术及工程化研究

发布时间：2018-01-29 10:33

本文关键词： 硝基复合肥高塔造粒技术工程化　出处：《齐鲁工业大学》2015年硕士论文　论文类型：学位论文

【摘要】：随着农村劳动力数量的降低和农民收入的增加,高效化肥为很多农民所青睐,而且高塔造粒复合肥较传统复合肥有着更为明显的效果,这点符合农民的用肥习惯。在测土配方施肥被大力推广的情况下,高塔造粒复合肥生产企业如果能够根据配方生产出质量过硬的产品,而且这种产品又能让农民接受,不断提高我国复合肥在肥料使用中所占的比例还是有着很多优势的。对目前硝基复合肥的生产方法进行了研究总结,包括料浆法、固体团粒法、部分料浆法、融熔法、掺混法、挤压法等。对硝基复合肥生产主要造粒工艺进行了考察,主要有：熔体塔式喷淋造粒、转筒造粒机造粒、双桨式造粒机造粒、流化床造粒机造粒、回转钢带冷凝造粒。剖析了高塔熔体造粒的工艺原理,熔体法造粒机理不是一种机理,而是几种机理的组合,其间难有明确界线,并贯串造粒全过程。包括成核机理、成层机理、聚结机理、粉碎机理、破损机理、磨损机理、磨剥转移机理、电荷作用机理、离缩作用机理、黏沙性物料相配机理。分析了硝基高塔造粒的优势所在,并对其市场前景进行了考察,为项目的建设打下了良好的基础。在硝基高塔项目建设中,针对高塔熔体塔式喷淋造粒技术进行了深入研究。根据熔体塔式喷淋造粒生产工艺流程,对产品配方调整其可适用性,控制生产工艺及典型的消耗,建设了年产20t硝基复合肥装置的配套方案。论文中分析了各个工艺条件对造粒的影响以及在三相点温度附近造粒的技术方案,进一步发现并解决高塔造粒生产硝基复合肥存在的问题。最后对硝基高塔进行了投资与经济评价并展望了硝基高塔复合肥的市场前景。该硝基高塔复合肥装置经过近2年的运行,通过不断总结完善,目前已实现安全、长周期、稳定运行,对金正大生态工程集团公司产品结构调整发挥了积极的作用。
[Abstract]:With the decrease of rural labor force and the increase of farmers' income, high-efficiency fertilizer is favored by many farmers, and high-tower granulation compound fertilizer has more obvious effect than traditional compound fertilizer. This is in line with farmers' use of fertilizer habits. In the case of soil testing formula fertilization is vigorously promoted, high-tower granulation compound fertilizer production enterprises can produce high-quality products according to the formula. And this product can be accepted by farmers, increasing the proportion of compound fertilizer in fertilizer use in China still has a lot of advantages. The current production methods of nitro-compound fertilizer were summarized. Including slurry method, solid pellet method, partial slurry method, melt method, mixing method, extrusion method and so on. The main granulation process of nitro-compound fertilizer production was investigated, including: melt tower spray granulation. Rotary granulator, double paddle granulator, fluidized bed granulator, rotary steel strip condensing granulation. The technological principle of high tower melt granulation is analyzed. Melt granulating mechanism is not a kind of mechanism. It is a combination of several mechanisms, in which there is no clear boundary and the whole process of pelletizing, including nucleation mechanism, stratification mechanism, coalescence mechanism, crusher mechanism, breakage mechanism, wear mechanism, abrasive transfer mechanism. The mechanism of charge action, the mechanism of dissociation and the mechanism of material matching of viscous sand were analyzed. The advantages of nitro tower granulation were analyzed, and its market prospect was investigated. In the construction of the nitro tower, the technology of spray pelletizing with melt tower was studied. According to the production process of melt tower spray granulation. Adjust the applicability of the product formula, control the production process and typical consumption. In this paper, the effect of various technological conditions on granulation and the technical scheme of granulation near the temperature of three-phase point were analyzed. Finally, the investment and economic evaluation of the nitro-tower compound fertilizer was carried out and the market prospect of the nitro-tower compound fertilizer was prospected. It's been running for nearly two years. Through continuous summing up and perfecting, it has realized safety, long period and stable operation, which has played an active role in the adjustment of product structure of Kim Jong un Ecological Engineering Group Company.
【学位授予单位】：齐鲁工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TQ444

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