纸浆模塑生产过程节能降耗关键技术研究

发布时间：2018-04-03 06:00

本文选题：纸浆模塑　切入点：节能降耗　出处：《广东工业大学》2014年硕士论文

【摘要】：环保纸浆模塑包装制品依靠其优良的缓冲特性及其环保优势正在逐步替代传统的泡沫塑料包装制品,预计在5-10年内,纸浆模塑制品对泡沫塑料制品的替代量将超过50%,形成数以亿元计算的市场份额。但是目前国内的纸浆模塑生产设备普遍存在着自动化程度低、能源浪费大、生产产品合格率低等问题,造成纸浆模塑制品的生产成本过高,大大降低了其与白色污染-EPS的市场竞争力,阻碍了该环保产品在包装行业的可持续发展。本文从纸浆模塑生产工艺流程进行分析,研究各个耗能工艺能耗特点,对其各个工艺进行节能降耗设计。本文主要针对纸浆模塑生产过程的能耗问题进行研究。主要工作有：(1)依据纸浆模塑产品背景与需求,对其生产过程工艺流程能耗进行了研究,分析得出其耗能特点。(2)对纸浆模塑生产过程中碎浆与调浆系统进行分析,主要介绍碎浆与调浆过程的能耗模型,设计碎浆与调浆控制系统；采用高速碎浆-中速搅浆-低速放浆的方式实现碎浆电机变频控制,采用二次调浆工艺和史密斯预估补偿器与PID控制器相结合对调浆进行自动化控制,实现纸浆生产过程节能降耗设计。(3)对纸浆模塑生产过程中真空吸成型系统进行能耗分析,设计真空吸附成型设备控制系统：分析在真空吸附成型过程中对成品均匀度、产品合格率等的影响。(4)对纸浆模塑生产过程中烘干过程进行耗能分析,设计烘干工艺控制系统；提出给予湿度动态变化的烘干过程效能优化,采用三段烘干过程对其进行设计,对烘干过程的温度控制采用模糊PID控制。(5)对纸浆模塑生产线进行节能降耗设计后,在企业进行测试,通过改造前和改造后的数据对比,证明了节能降耗设计的有效性,能对生产过程的电能和油耗起到很好的节能效果。本课题主要研究纸浆模塑生产设备高耗能的问题,对其各个工艺流程的耗能对象进行节能降耗设计。分析纸浆模塑关键工艺流程的工艺特性,找出能耗问题的关键所在,分析其耗能特点。通过工业过程建模及优化技术实现纸浆模塑生产过程各个关键工艺进行效能优化及系统节能研究。采用变频调速技术、伺服驱动技术、先进控制技术等实现生产过程关键工艺参数的自适应控制。对其关键工艺及算法节能效果进行实验仿真及验证。并在改造前和改造后进行能耗数据统计,证明其节能降耗设计的效果。
[Abstract]:Environmental protection pulp molded packaging products rely on their excellent cushioning characteristics and environmental protection advantages are gradually replacing the traditional foam packaging products, it is expected that within 5-10 years,The substitution of pulp molded products for foam products will exceed 50 yuan, forming a market share of hundreds of millions of yuan.However, at present, there are some problems such as low degree of automation, large energy waste, low qualified rate of production products and so on, which cause the production cost of pulp molded products to be too high.It greatly reduces its market competitiveness with white pollution-EPS and hinders its sustainable development in packaging industry.This paper analyzes the process flow of pulp moulding, studies the energy consumption characteristics of each energy consuming process, and designs the energy saving and consumption reduction of each process.In this paper, the energy consumption of pulp molding process is studied.According to the background and demand of pulp moulding products, the energy consumption of the process flow is studied, and the energy consumption characteristics are obtained.This paper mainly introduces the energy consumption model of pulping and pulping process, designs the control system of crusher and pulping, and realizes the frequency conversion control of pulping motor by means of high speed pulping, medium speed mixing and low speed pulping.In this paper, the secondary sizing process, Smith predictor and PID controller are used to control the pulping automatically, and the energy consumption of the vacuum suction molding system in the pulp molding process is analyzed by using the design of energy-saving and consumption-reduction in the pulp production process.Design the control system of vacuum adsorption molding equipment: analyze the influence of product evenness and product qualification rate in vacuum adsorption molding process) analyze the energy consumption of the drying process in the process of pulp molding production, design the drying process control system;The efficiency optimization of drying process with dynamic change of humidity was put forward. The three-stage drying process was used to design the drying process, and the fuzzy PID control was used to control the temperature of drying process, and the energy saving and consumption reduction design of pulp molding production line was carried out.Through the comparison of the data before and after the transformation in the enterprise, it is proved that the design of energy saving and consumption reduction is effective, and it can play a very good energy-saving effect on the electric energy and fuel consumption in the production process.This paper mainly studies the problem of high energy consumption in pulp moulding production equipment, and designs the energy consumption object of each process flow.This paper analyzes the technological characteristics of the key technological process of pulp molding, finds out the key point of energy consumption, and analyzes the characteristics of energy consumption.The efficiency optimization and system energy saving of each key process in pulp molding process are studied by industrial process modeling and optimization technology.The adaptive control of key process parameters in production process is realized by frequency conversion, servo drive and advanced control technology.The key technology and the energy saving effect of the algorithm are simulated and verified.The data of energy consumption before and after revamping are counted to prove the effect of energy saving and consumption reduction design.
【学位授予单位】：广东工业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TB48;TP273

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