高粘度聚合MDI新工艺的工业化实施
发布时间：2018-11-28 06:57
【摘要】：聚异氰脲酸酯泡沫(PIR)是聚氨酯硬质泡沫中的一种,具有重量轻、绝热效果好、施工方便等特点,是未来建筑保温板材的主流发展方向。高粘度聚合MDI是生产PIR,板材的主要原料,全球市场每年需求量40万吨以上,而目前的分离塔生产工艺、短程蒸馏工艺、薄膜蒸发工艺都存在一定的弊端,无法满足高质量的市场需求。本论文在综合考虑原有工艺的优缺点后,设计采用了“短程蒸馏+分离塔”组合新工艺,用ASPEN软件建立过程仿真模型,对生产高粘度聚合MDI的重要物流组成进行模拟计算,根据模拟计算结果完成高粘度聚合MDI装置的工业化设计方案并成功实施。此外还建立了高粘度聚合MDI中二聚体相对含量分析方法、尺寸稳定性及压缩强度等评价手段,完善了高粘度聚合MDI质量评价体系。“短程蒸馏+分离塔”新工艺解决了其他工艺存在的填料结焦、M纯度低、纯MDI质量差等问题,并持续稳定地生产出高质量的高粘度聚合MDI产品。产品质量和产能均达到设计目标,满足下游市场的需求,创造了较大的经济效益和社会效益。
[Abstract]:Polyisocyanurate foam (PIR) is one of the rigid polyurethane foams, which has the characteristics of light weight, good heat insulation effect and convenient construction. High viscosity polymerized MDI is the main raw material for the production of PIR, plates, and the global market demand is more than 400000 tons per year. However, the current separation tower production process, short range distillation process and thin film evaporation process all have some drawbacks. Unable to meet high quality market demand. In this paper, after considering the advantages and disadvantages of the original process, a new combined process of "short range distillation separation tower" was designed, and the process simulation model was established by using ASPEN software to simulate and calculate the important logistics components of the production of high viscosity polymerized MDI. According to the simulation results, the industrial design scheme of high viscosity polymerization MDI unit was completed and successfully implemented. In addition, the relative content analysis method, dimensional stability and compressive strength of dimer in high viscosity polymerized MDI were established, and the quality evaluation system of high viscosity polymerized MDI was improved. The new process of "short range distillation and separation tower" has solved the problems of coking of filler, low purity of M and poor quality of pure MDI in other processes, and high quality and high viscosity polymerized MDI products have been produced continuously and stably. The product quality and production capacity reach the design goal, meet the demand of the downstream market, and create greater economic and social benefits.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TQ328.3
本文编号：2362123
[Abstract]:Polyisocyanurate foam (PIR) is one of the rigid polyurethane foams, which has the characteristics of light weight, good heat insulation effect and convenient construction. High viscosity polymerized MDI is the main raw material for the production of PIR, plates, and the global market demand is more than 400000 tons per year. However, the current separation tower production process, short range distillation process and thin film evaporation process all have some drawbacks. Unable to meet high quality market demand. In this paper, after considering the advantages and disadvantages of the original process, a new combined process of "short range distillation separation tower" was designed, and the process simulation model was established by using ASPEN software to simulate and calculate the important logistics components of the production of high viscosity polymerized MDI. According to the simulation results, the industrial design scheme of high viscosity polymerization MDI unit was completed and successfully implemented. In addition, the relative content analysis method, dimensional stability and compressive strength of dimer in high viscosity polymerized MDI were established, and the quality evaluation system of high viscosity polymerized MDI was improved. The new process of "short range distillation and separation tower" has solved the problems of coking of filler, low purity of M and poor quality of pure MDI in other processes, and high quality and high viscosity polymerized MDI products have been produced continuously and stably. The product quality and production capacity reach the design goal, meet the demand of the downstream market, and create greater economic and social benefits.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TQ328.3
【参考文献】
中国期刊全文数据库 前8条
1 俞文欣;循序渐进的聚氨酯工业[J];国际化工信息;2002年05期
2 宋春梅,王得宁;异佛尔酮二异氰酸酯三聚体的合成[J];合成橡胶工业;2002年01期
3 马德强;丁建生;宋锦宏;;有机异氰酸酯生产技术进展[J];化工进展;2007年05期
4 邱少君,甘孝贤,王吉贵,杨毅;HDI三聚体合成研究[J];聚氨酯工业;1998年02期
5 岳金彩,谈明传,郑德前,郑世清,韩方煜;连续缩合制多胺流程的研究[J];聚氨酯工业;2001年04期
6 马德强,张衍荣,齐旺顺;聚合MDI中二环化合物含量对发泡性能的影响[J];聚氨酯工业;2003年03期
7 张衍荣,马德强;聚合MDI中三环化合物含量对硬质聚氨酯发泡性能的影响[J];聚氨酯工业;2003年04期
8 王土才,王得宁,胡春圃,应圣康;MDI生成聚异氰脲酸酯的等温反应速度动力学研究[J];塑料工业;1994年05期
中国重要会议论文全文数据库 前1条
1 董志传;;国内外MDI和TDI供需现状及预测[A];中国聚氨酯工业协会第十次年会论文集[C];2000年
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