Abstract : the leather manufacture process is separated into five stages , including raw hide preservation , beamhouse , tanning , post - tanning treatment and finish , from raw hide to leather . then the classical processing techniques and the problem substances generated in that are introduced . the enviromentally friendly state - of - the - art techniques used in leather production are put forward at last 文摘:从生态学方面讨论了皮革生产的可持续发展问题.制革生产过程可分为:原皮保存、准备工段、鞣制、鞣后处理和涂饰五个部分.以此为纲,本文概括了传统制革工艺,讨论了在皮革生产过程中可能出现的不利于环境保护的因素.针对这些问题提出并简要介绍了制革清洁化技术的应用
Another feature in technical innovation is to update the old product of the company , which has got good effect . through upgrading electrostatic precipitator for black liquor boiler , which is the key equipment at the stage of combustion in the system of papermaking alkali recovery , its availability and reliability have been improved in great way 对老产品的更新，是公司技术创新的另一个特点，起到了相当好的实际效果，造纸黑液锅炉电除尘器是造纸碱回收系统燃烧工段关键设备，通过不断的技术更新，其适应性和可靠性得到了极大的提高。
After analyzing , it is determined that an embedded - data - monitoring system , instead of the traditional communication card that links the ipc and monitoring center , can be put into practice to directly join together with the switched ethernet control network , so that the user can monitor the industrial field using internet / intranet conveniently 经过分析，决定用嵌入式的数据监视系统取代传统的钢厂薄板工段数据监视系统典型配置中的通信网卡，以便直接接入交换式以太控制网络，用户可以用internet intranet技术监视工业现场，而不仅限于原来的监控室。
The question for study is a part of subsystem of production process control system of application & demonstration project of cims of fuzhou man - made board plant under the " 863 program " . the whole system is a multi - grades distributive process control system in which the advanced process control ( apc ) technologies are applied to control the two key sectors , namely the drying sector and the heat milling sector , of the production processes of the man - made board plant 2 、本课题为国家863计划福州人造板厂cims应用示范工程中生产过程控制分系统的一部分，整个系统为多级分布式过程控制系统，在此将先进控制技术应用于人造板生产过程中干燥系统和热磨系统这两个关键工段的控制。
