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Analysis of mass flow and proposal of key technologies for establishment of zero-emission processes

质量流量分析及零排放工艺建立关键技术建议

基本信息

批准号：
09247106
负责人：
HANO Tadashi
金额：
$ 52.03万
依托单位：
Oita University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research on Priority Areas (A)
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 2000
项目状态：
已结题

项目摘要

The establishment of zero-emission processes in representative industries which discharge a lot of emissions was studied by analyzing the mass and energy flows in each process to make the data-base and by developing the key technologies necessary to reduce the emission. A soy-sauce production process was investigated as an typical example of food industry. The mass flow in the process was completely analyzed for all operating lines and the mass balance charts of total solid and liquid, TOC, N, P and Cl were drawn. The dry distillation, pressurized hot water treatment, and enzymatic hydrolysis of cake were investigated for effective re-use in agriculture by removing salt. Vinyl chloride monomer (VCM) production process was investigated as an example of chemical industry. The total mass balance sheet of chlorine in Japan was first presented based on the flow analysis. A satisfactory way to reduce the byproducts such as chloroethane was proposed to realize the zero-emission of those bypro … More ducts by biological conversion method. The road works generated a large quantities of byproducts such as asphalt, concrete and gravelly soil scraped, while they utilized a lots of natural virgin resources. In establishing an advanced recycle system of byproducts, it was important to clarify the mass flow of raw materials and byproducts for each road work in a local area. The zero-emission in metal industries was studied for iron, copper and zinc production processes. About two million and four thousand tons of copper was supplied to the copper market and nine hundred thousand tons of copper scrap was used in total. As a topic of recycling technology, the removal of iron in molten copper was studied by air blowing process. Iron content decreased from about 1% to less than 100ppm within 2000 sec. Material flow in semiconductor industry was investigated to analyze the emission of unrecycled materials. Inter-process networking of such emissions with the other manufacturing processes was also investigated. The problems to be solved for waste minimization were assessed and some waste minimization options were proposed.Those results obtained in the present investigation were proposed to industries and also published as research papers in various journals. Less

通过分析各流程中的质量和能量流动，建立数据库，开发减排所需的关键技术，研究了在具有代表性的排放大的行业建立零排放流程。以一种典型的食品工业酱油生产过程为例进行了研究。对各生产线的质量流动进行了全面的分析，绘制了总固液、总有机碳、总氮、总磷、总氯的质量平衡图。研究了干法蒸馏、加压热水处理和酶解饼粕的脱盐再利用方法。以化工行业为例，对氯乙烯单体(VCM)的生产工艺进行了研究。在流动分析的基础上，首次给出了日本氯气的总质量平衡表。提出了一种减少氯乙烷副产物的方法，实现了PRO-…的零排放。更多的管道采用生物转化的方法。道路工程在利用大量天然原始资源的同时，产生了大量的沥青、混凝土、碎石土等副产品。在建立先进的副产品回收系统时，重要的是澄清当地每项道路工程的原材料和副产品的质量流动。针对铁、铜、锌生产过程，研究了金属工业的零排放问题。向铜市场供应铜约200.4万吨，共利用废铜90万吨。作为回收技术的一个主题，研究了吹风法去除铜液中的铁。铁含量在2000秒内从约1%降至100ppm以下。对半导体行业的物流进行了调查，分析了不可回收材料的排放。还调查了这些排放物与其他制造工艺之间的进程间联网。评估了废物最小化需要解决的问题，并提出了一些废物最小化方案。这些调查结果被提交给各行业，并以研究论文的形式发表在各种期刊上。较少