碱洗塔洗塔系统的优化

介绍了氯乙烯合成工段碱洗塔洗塔工艺流程,并针对存在的问题对其进行了优化升级,使碱洗塔自控洗塔、配碱,提高了系统的自动化控制水平,节约了水资源,也降低了废水处理系统的负荷,最大限度地提高了碱液的利用率,提高了工作效率,增加了经济效益,     

二步法三聚氰胺热气冷却单元的新工艺

在两步法三聚氰胺工艺生产中,由于热气过滤单元温度高,产出的粗品三聚氰胺纯度低,副产物多,需要在精制过程中利用蒸汽,重新加热溶解粗品三聚氰胺,并送入结晶塔降温结晶,得到纯度高的三聚氰胺成品,此过程消耗了大量的蒸汽,增加了生产成本。提出了一种新的生产工艺,首次在二步法三聚氰胺工艺中增加了热气冷却单元,降低了热气温度,并副产了部分蒸汽,分离出了高沸点反应副产物,净化了热气,得到了纯度高的粗品三聚氰胺,同时改变了精制工艺,极大地降低了蒸汽消耗,节约了生产成本,提高了产品市场竞争力。     

焙烧炉燃烧系统油改天然气研究与应用

介绍了炭素焙烧炉燃烧系统由燃油改为天然气的过程以及使用效果和效益分析,通过改造真正实现了清洁生产,达到了节能效果,改善了工艺水平,降低了生产成本,提高了生产效率,净化了工作环境。     

高庄煤矿供热系统的改造

高庄煤矿针对原锅炉供热系统存在的问题进行了改造,拆除原锅炉,采用邻矿电厂的富余蒸气作热源,安装热交换器组。改造后保证了供热质量,节约了能源、资源,提高了矿区环境质量,降低了运行维护费用,节省了人力资源,减少了占地面积,节约了各项检查检测费用。     

国外某1000t/d项目风扫生料磨调试

本文介绍了风扫生料磨的调试经验,通过改造出磨风管,降低了磨机通风阻力,增加了磨内通风量,提高了磨机的烘干能力;通过改造中心圆尺寸,增加了填充率,提高了磨机的出力,从而提高了磨机的产量,顺利实现了达产目标。     

汽车内饰转向护板注塑模设计

本文基于CAD/CAE技术对汽车内饰件转向护板注塑模具进行了设计。运用Pro/E软件对模具进行了三维设计,使用Moldflow对模具进行了CAE分析,优化了浇口位置,合理设计了排气槽,提高了设计效率,创新了塑料模具设计方式。根据产品结构,采用动模中心凸起布局,应用斜顶机构实现侧抽芯,简化了模具结构,提高了模具设计质量,降低了制造成本。     

煤制甲醇加碱工艺的技术改进

阐述了一种煤制甲醇加碱工艺的技术改进,解决了国内现有工艺技术弊端,降低了设备投资,缩小了占地面积,减少了操作人员劳动强度,减轻了环境污染,并通过了三年多的生产运行验证。     

浆料槽机械密封技术的改造

利用机械密封的优点和特性,对原来的浆料槽填料密封结构进行了改造,消除了泄漏,降低了噪声,减少了振动,改善了环境,且便于维护和检修,降低了检修人员的劳动强度和检修费用,设备的技术含量得到了提升。     

带式过滤机在多品种氢氧化铝生产中的应用

介绍了带式真空过滤机的工作原理及其在多品种氢氧化铝生产方面的应用情况,并对带式真空过滤机使用过程中存在的问题进行了改造。改造之后,提高了洗涤过滤效率,降低了滤饼水分,降低了能耗,提高了产量,确保了产品质量,取得了较好的经济效益。     

用磷酸进行活性炭后处理的探讨

本文介绍了用磷酸代替盐酸进行活性炭酸洗的方法,该法避免了环境污染,简化了工艺过程,改善了劳动环境,降低了产品成本,提高了产品质量。     

利用混合语言编程技术进行化工计算

为在Windows平台下有效地使用DOS下的大量FORTRAN源程序资源,本文研究了VB与FORTRAN的混合语言编程技术,即利用VB进行人机界面设计,利用FORTRAN完成计算。本文以精馏塔设计为背景,给出了成功的程序示例。     

谷物干燥模拟软件

介绍了CGDSP、DRYPAK、HL—E三种谷物干燥模拟软件的功能、原理和使用方法，给出了各软件的输入和输出参数。利用这些软件可以对谷物干燥机的性能进行预测以及参数选择、试验和设计，扩大了计算机在干燥技术领域中的应用，为干燥技术的发展提供了一种先进的方法和工具，具有显著的实用价值。     

Practical feeding programs using soy protein as base

The U.S. has furnished billions of lb food commodities containing soy protein for use in feeding programs in the less developed countries. As a result of the low cost, excellent nutritional qualities and functional versatility of soy products, they have been used extensively as protein additives in a broad spectrum of foods for practical feeding programs. Soy flours are a major ingredient in blended foods, such as instant corn soy milk, corn soy blend, and wheat soy blend; and soy flours and grits have been used as protein fortificants in wheat, corn, sorghum, and oat products distributed overseas. Most recently, a new whey soy drink mix has been developed for use in preschool feeding programs and now is being introduced around the world. As more attention focuses on the nutritional requirements of feeding program beneficiaries and on the need for low cost sources of protein, it can be expected that uses for soy protein will expand and additional soy based foods will be added to the list of commodities used in practical feeding programs. One of 13 papers presented in the symposium, “Soy Protein,” at the AOCS Spring Meeting, Mexico City, April 1974.     

二极管阵列检测器在农药液相色谱分析中的应用

二极管阵列检测器是一种基于光电二极管阵列技术的新型检测器.使用二极管阵列检测器,可以对色谱峰进行光谱扫描、峰纯度鉴定等定性分析,在方法研究中可以快速选择最佳检测波长,在多组分混合物分析中可以编辑波长程序.由于具有这些明显优势,二极管阵列检测器在农药分析中有着极佳的应用前景.     

高分子材料配方均匀设计系统

结合实验均匀设计和逐步回归优化方法，设计了更为科学的高分子材料配方设计系统，可更准确地预测产品的性能，简化实验程序，提高实验效率。该系统特别适用于多因素多水平多指标实验，在配方变量的变化范围内，利用回归方程建立单一组分与性能间的关系，并可用于预测某一配方的性能指数，利用计算机程序在设定优化条件后可得到相应的优化配方及其性能指标。     

Embryo/fetal radiation protection: a possible model for comprehensive occupational reproductive health programs

Modern work activities may necessitate the use of a wide variety of potentially hazardous physical, chemical, biological, or radiological agents. The risks associated with exposure to these agents may not be limited to the worker, and in some cases can extend to the offspring of exposed individuals. Potential exposures to such agents introduce a number of interesting health and safety considerations, including the possible establishment of exposure limits that address reproductive health concerns, and the determination of the extent to which an organization will go to accommodate occupationally exposed persons. The radiation safety profession has considered this issue in part through the promulgation of a specific, lowered occupational dose limit for the embryo/fetus in the workplace. Because ionizing radiation is certainly not the only known or suspected teratogenic agent that may be occupationally encountered, the approach used by the radiation protection profession may be used as a model upon which comprehensive occupational reproductive health programs can be developed. The essential elements of such programs include: the initial disclosure of potential reproductive hazards to all employees upon employment, a mechanism for formal voluntary declaration of reproductive status, a codified institutional decision process that establishes the extent to which accommodations will be made, and formal recognition of the rights of the employee regarding all final work-related decisions.     

A computer approach toward automation of a chemical services laboratory: I. Instrument support

The use of a medium scale computer for instrument support results in several distinct advantages. Instruments of differing data rates and calculation requirements may be supported on the same system at the same time. There is no interference between any of the instruments since each is assigned its own block of time for scanning and its own set of programs for data support. The use of both the on-line and off-line modes permits the easy development of programs and their subsequent incorporation into the program library. It becomes advantageous to look at data supporting instruments that require only small computer support since the off-line mode can be used for this purpose. Instruments previously considered too low in volume to support can enjoy the benefits of off-line computer support at little additional cost. The use of high level languages such as are supported on the medium scale computers make it possible to train laboratory personnel to write and modify their own programs. Their involvement in the programming effort can result in a greater acceptance of the computer as a useful tool in the laboratory, instead of the attitude that sometimes prevails that the computer is a hindrance rather than a help. The ease with which program changes can be made makes the program modification task easier for the programming staff of the computer installation, if laboratory personnel do not perform this function. The medium scale computer provides computational power far exceeding that available on a series of small dedicated computers. The “pooling” of resources results in having available a larger scale computer for those programs and instruments that require it. The degree of sophistication of software available on the medium scale computers is far above that available on the smaller units. One of seven papers being published from the Symposium, “Computer Systems and Application in the Oil and Fat Industry” presented at the ISF-AOCS World Congress, Chicago, September 1970.     

Diffraction Method of Measuring the Structural Characteristics of Fabrics Made of Chemical Fibres

The diffraction method allows simultaneously determining several geometric characteristics of fabrics of different weaves with a high degree of accuracy. The use of programs that elaborate diffractograms allows automating the measurements. The method significantly reduces the labor intensity of the measurements and can be used for moving fabrics of different weaves. The use of different photodetectors allows determining the length and width of the repeat, size of the through pores in the fabric, warp and weft thread diameter, linear filling over warp and weft, and surface filling. The method can be used to determine external defects provided in GOSTs: thread slippage, local warp and weft bulges, weave perturbations, fabric warping.     

Regulatory aspects of mycotoxins in soybean and soybean products

More than 50 countries have enacted or proposed regulations for the control of aflatoxins in foods and/or feeds, and at least 15 of these countries also have regulations for permitted levels of contamination by other mycotoxins. Since 1965, the U.S. Food and Drug Administration has used action levels to control aflatoxins in its compliance programs. Cooperative programs with the U.S. Department of Agriculture, state agencies, and industry also have been used to keep exposure to aflatoxins as low as practical. Soybeans support the growth of many mold species, which can produce toxins such as aflatoxins, trichothecenes (such as T-2), and cytochalasins. The natural occurrence of these toxins in soybeans has not been a problem. Limited surveys of soybeans and soy-based infant formulas have not revealed significant contamination. The sequence of events that leads to consideration of a mycotoxin for control programs and other regulatory activity includes determination of a toxic response, isolation and identification of the toxin, development of a sampling plan and method of analysis, and determination of incidence and levels of contamination of the susceptible commodity. The quality of soybeans can vary widely, depending on environmental, agronomic, and storage conditions. products susceptible to contamination from improper storage are subject to regulatory action on a case-by-case basis. The government-industry cooperative programs have been successful in limiting human exposure to aflatoxins.     

加热炉的节能控制

论述加热炉的几种优化控制方案,通过传统控制方案和优化控制方案的比较,说明优化控制能够在满足工艺要求,保证设备安全的前提下,降低加热炉的能耗,提高加热炉的热效率。