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分析粘胶纤维工厂各车间工艺的特殊性,及生产使用的介质固定性特点,结合施工图内容与深度统一规定编制一种适用于本行业的设计编码系统。本文对编码规则中各个字母所代表的意义进行分析,最终形成适合粘胶项目工程设计的编码规则,为各专业三维协同设计实施打下坚实基础。 相似文献
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当前,全国各行各业都在改革,电镀行业也不例外。特别是自行车工业,市场竞争剧烈,对电镀的要求越来越高,兹就电镀生产的改革提出几点意见。一、对松绑问题认识上的统一有人认为过去工厂里已行之有效的一些技术管理规程、制度、工艺、技术文件等会绑住车间、工段的手脚,要求“松绑”,一切应以承包人说了算。具体地说,承包后,车间或工段可以不通过任何专业技术人员的试验、会签、或技术部门审批,工艺可以随便改,设计可 相似文献
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根据目前的七年计划设计机关基于最近几年出版的科学研究著作编制了接触法硫酸生产的自动化设计。设计方案中采取的生产自动化水平稍高于“局部自动化”的概念(也就是个别设备、机组、系统和工艺过程部分的自动化),但还不符合“综合自动化”的概念。 下面研究一个用浮选黄铁矿操作的接触硫酸车间的自动化标准设计方案。 相似文献
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对INS工艺过程进行了阐述,并结合轿车前门内饰左右扶手条的INS生产实际,设计了该产品INS工艺所需的膜片镶件。采用膜片高压成型模具、膜片弹顶式冲裁模具以及两板热流道多浇口注塑模具来实现INS塑件的注塑成型生产。所设计的INS工艺成组模具结构简单、设计巧妙新颖,能实现扶手条产品(INS工艺成型)的高良品率生产,可为同类塑件的生产提供借鉴。 相似文献
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中小型氮肥厂要狠抓技改多产化肥 总被引:1,自引:0,他引:1
我国化肥工业要发展,中小氮肥厂仍在重任,关键在于通过技术改造,提高企业的技术水平,增加产量,并使产品增加技术含量,要完成这一艰巨任务,必须加强试验研究,技术开发,设备工艺、设计制造以及技术管理等各方面的工作,为建设有中国特色的化肥工业体系再立新功。 相似文献
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Taesup Moon Yejin Kim Hyosu Kim Myungwon Choi Changwon Kim 《Korean Journal of Chemical Engineering》2011,28(3):817-824
A fuzzy inference system (FIS), which could classify the state of effluent quality if it was high or not and identify visually
the reasons for the high effluent quality in municipal wastewater treatment plants (WWTPs), was developed in this study. The
decision tree algorithm and fuzzy technique were applied in the development of this system. By applying the classification
and regression tree (CART) algorithm as a decision tree algorithm, the knowledge related to effluent quality was extracted
and IF-THEN rules with crisp boundary values were generated. By applying the fuzzy technique, the fuzzification of these rules
was conducted, where the trapezoidal and triangular membership function was used as a membership function type. And a Mamdani
model with the Max-min operation was used as an inference model and the center of area (CoA) method was used for deffuzification.
The accuracy achieved by using the developed system to classify the effluent state was confirmed by comparing the result with
measured data. Furthermore, the developed system was demonstrated to be a useful tool for inferring the reasons for the high
effluent quality. 相似文献
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Quality Assurance in Plant Design and Construction. In the field of chemical plant design and construction, quality is understood to mean the strict application of the state-of-the-art rules and the fulfilment of all specific requirements specified by the client, including plant take-over by the client in accordance with the time schedule. Chemical plants can rarely be handled in the same manner as series products. Therefore, quality assurance requires a large organizational scheme. The definition of quality and the system applied to ensure an adequate quality standard are a rather complicated task. The technical divisions involved in a project are responsible for the quality, i.e. there is no sharing of responsibility. It is also impossible to shift this responsibility to a special QA department. 相似文献
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This paper summarizes the potential options applying ozone for the improvement of effluents from wastewater treatment plants. A specific focus will be on the technical aspects of how to integrate ozone technique in existing or new conventional treatment plants. Additionally some large scale projects will be illustrated, where this technique is now in operation. The following aspects are of interest and are discussed: necessary ozone dose range (depends on application, water matrix and contaminants); required components of ozone systems (ozone generator, gas supply, reaction system, off-gas handling); process control, online measurement; potential parameters to be used for process control; design guidelines for the integration of ozone systems; and cost calculations. 相似文献
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为了解决国内某钢厂煤气加压站分布式控制系统的信息发布装置无法向LED数字看板发布数字消息的问题,对ASCII码表示十进制数字的过程进行分析,发现用ASCII码表示进位计数制数字时应将数字转换为非进位计数制,这种转换由一簇以按权展开式为基础导出的递推公式所描述的数学模型实现,模型将进位计数制数字的系数同权值相分离,按原有顺序排列,形成非进位计数制数字;结合LED数字看板使用ASCII编码发布数字消息的原理,在SIMATIC平台上实现该模型,使得由分布式自动化系统采集的反应生产工况的数字消息能在数字看板中发布。 相似文献
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文章以硫酸冷却塔稀酸泵为控制对象,应用功能分析和系统化设计方法进行技术方案构思,并结合生产工艺要求和当前企业经济、技术现状,提出了使用EJA变送器现场检测压力,再结合数显及报警设备组成自动控制报警系统设计方案。通过对三部分的改进,能够实现在线压力检测,数据真实、可靠、准确、稳定,对稀酸泵出口压力出现异常时能及时报警,从而操作人员及时处理,避免未能及时处理而造成的设备损坏,减少设备维修费用,并且大大减轻劳动强度。 相似文献
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介绍了国产CR-224型氯丁橡胶技术性能和加工应用技术。其中可接枝的CR-244将是氯丁胶粘结剂行业很有潜力的新产品,该产品的工业化生产改善了国产CR-224不能与MMA接枝的缺陷,接枝共聚合的胶粘剂技术性能达到GB7126-86标准要求,接枝效果与A90相近。 相似文献