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

通过分析各工序的质量流和能量流，建立数据库，开发减排关键技术，研究了排放量大的代表性行业零排放工序的建立。以食品工业为例，对生产过程进行了全面分析，绘制了总固液、TOC、N、P、Cl的质量平衡图。加压热水处理，以及以化学工业为例，研究了滤饼的酶水解，以在农业中有效地再利用氯乙烯单体（VCM）生产过程，首先根据流程提出了日本的氯的总质量平衡表。分析提出了一种减少氯乙烷等副产物的令人满意的方法，通过生物转化方法实现这些副产物的零排放。道路工程产生了大量的沥青、混凝土等副产物。在建立先进的副产品回收系统时，重要的是要明确当地每项道路工程的原材料和副产品的质量流向。对金属工业中的铁、铜和锌生产工艺进行了研究，大约向铜市场供应了200万吨铜，总共使用了90万吨废铜作为回收技术的课题。研究了熔融铜中的除铁通过吹气工艺，铁含量在 2000 秒内从约 1% 降至 100ppm 以下。对半导体行业的材料流进行了研究，以分析未回收材料的排放量与其他制造工艺的工艺间网络。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。本次调查中获得的结果已向行业提出，并在各种期刊上发表为研究论文。