火灾自动报警控制系统在浮法玻璃工厂的应用

介绍火灾消防的要点和因素,说明了火灾自动报警控制系统的构成,其与消防设备联动的控制要求和设计方法,并以浮法玻璃工厂的火灾自动报警系统为例进行了应用说明。     

火灾报警控制系统设计在建筑中的应用

分析了工厂及高层民用建筑中设置火灾报警系统的必要性。总结了各种火灾探测器的原理、功能及应用。阐述火灾报警控制系统设计的基本要求,智能火灾报警系统的组成元素及工作原理,以及设计时的注意事项等。     

海上采油平台火灾寻址盘国产化改造的可行性分析

海上采油平台由于其所处的海洋环境以及工作性质的特殊性,对于火灾的检测及报警设备要求极为苛刻。火灾寻址盘作为海上石油平台的火气系统重要组成部分,为海上石油作业安全生产及人员安全提供了重要的保障。我国海洋石油事业由于起步较晚,其中火气系统及火灾可寻址盘均来自国外。随着国内科技的发展,国产化的火灾报警系统已融入生活的每一个角落,陆地的商场及小区的火灾报警系统已难觅国外厂家的踪影。本文主要从海上采油平台火灾寻址盘的现状、火灾寻址盘国产化改造典型案例分析、国外与国产火灾寻址盘的优劣分析、火灾寻址盘国产化改造推广可行性分析等方面进行论述,最终得出结论。     

石油天然气工程火灾在自动报警系统设计中的探讨

火灾自动报警系统在石油天然气工程中逐渐成为一种标准配置的安全系统。通过近几年来石油天然气工程设计工作对火灾自动报警系统的理解和总结,对石油天然气场站火灾自动报警系统的设置依据,方案的选择及设计中的问题作了简单的探讨,并给出了推荐性的结论。     

焦化厂火灾自动报警系统室外布线方式的设计与研究

介绍了国内焦化厂火灾自动报警系统室外布线的设计现状,对几个已建成的、在建的焦化工程火灾自动报警系统室外布线的方式进行了调查研究。结合国内、国外相关的设计规范与标准,提出了几种焦化厂火灾自动报警系统室外布线的设计方式。     

原油罐区的自动火灾报警及消防系统的设计选型

按照《石油化工企业设计防火规范》,火灾自动报警系统是在浮顶罐大于或等于5万平方米时才采用,或者采用手动或者采用遥控来对泡沫灭火系统进行控制,本文根据某个炼油厂的其中两个5万方的控制原油罐的火灾报警系统以及消防系统来探讨发生火灾时如何采用自动火灾报警发出警报和如何利用自动泡沫消防系统进行消防。为以后的存在原油罐区的自动火灾报警及消防系统的设计选型提供一定的方法。     

变电站火灾自动报警及消防联动系统的设计优化

文章概述了火灾自动报警系统及消防联动系统的设计要点,介绍了相关设备的特点,同时结合变电站不同的建筑特点和不同设备的消防要求,有针对性地合理地选配产品,克服了原有消防系统设计方案不足,对设计做了进一步完善,为今后优化变电站火灾报警及消防联动系统的设计提供一定的理论及实例依据.     

成品油库火灾自动报警系统设计浅谈

本文结合成品油库建设工程中火灾自动报警系统的应用情况,对当前成品油库火灾自动报警系统设计的必要性进行了分析,探讨了各火灾报警设备在成品油库中的应用,对成品油库火灾自动报警系统设计提出了设计思路。     

火灾自动报警系统在抚顺石化公司的应用

介绍了火灾自动报警设备的发展概况和几代产品的特点,阐述了传统火灾自动报警系统与现代火灾自动报警系统的区别,从工程角度介绍了火灾自动报警设备的选用原则以及应用中应该注意的一些问题。     

基于PLC的火灾自动报警与消防系统的开发

随着石油化工生产装置建设越来越多,易燃易爆化学产品引发的火灾时有发生。为了保证石化生产装置安全可靠,应用功能齐全、可靠的自动报警与消防系统进行集中管理和控制是很有必要的。以PLC为核心控制器的火灾自动报警与消防系统为例,介绍了其设计思路、火灾自动报警与消防系统的组成及工作原理、联动控制系统的硬件布置及软件编程。     

乙苯,苯乙烯的生产及合成乙苯,苯乙烯催化剂的研究进展

苯乙烯是重要的石油化工原料。本文介绍了国内外苯乙烯生产的发展概况，合成乙苯，苯乙烯所用的催化剂种类，并就苯乙烯生产及催化剂的发展趋势提出了自己的观点。     

Synthesis and characterization of homopolymers and copolymers of various acrylates and acrylonitrile

Various homopolymers and copolymers of methyl acrylate, ethyl acrylate, butyl acrylate, and acrylonitrile in different feed ratios were synthesized. These were characterized by IR, ¹³C-NMR, DSC, DTA, and TGA. Spectroscopic characterization helped in differentiating copolymers of different mol ratios. Thermal analysis revealed different degradation patterns for homopolymers and copolymers. The temperature and energy changes associated with various phase transitions were dependent on the chemical composition of homo- and copolymers, as expected. © 1993 John Wiley & Sons, Inc.     

生物质气化及生物质与煤共气化技术的研发与应用

总结了生物质原料的特点及生物质单独气化的缺点;介绍了国内外生物质气化技术及生物质与煤共气化技术的研发与应用现状;分析了在此领域国内外的发展趋势与前景;概括了开展生物质与煤共气化技术研发的意义。     

Electronic structures and reactivities of monometallic and bimetallic clusters of Au and Cu

The variation of the Au 4f binding energy of Au clusters with the cluster size has been established by measuring the binding energies of clusters whose size distributions were independently determined by HREM and STM. The binding energy increases significantly when the cluster size is less than 2 nm. Au-Cu bimetallic clusters of the composition Cu₃Au have been deposited for the first time on carbon substrates. The shifts in the core level binding energies of the bimetallic clusters show the effect of alloying in the case of large clusters, but show effects of both alloying and cluster size in the case of the small clusters. The interaction of CO with Cu₃Au clusters is stronger than with a bulk Cu metal. The interaction of CO with small Cu clusters also seems to be stronger than with bulk Cu or with large Cu clusters.     

钾盐资源及钾肥供需情况分析及预测

阐述了国内外钾盐资源及钾肥生产现状,对国内外钾盐的供需形势进行了分析及预测,从资源、原材料、国际市场三方面提出了解决我国钾盐短缺的措施。     

Kinetics and Mechanism of Oxidation of Mono- and Polyacetals

Abstract

Kinetics and mechanisms of oxidation of 6 acetals by molecular oxygen and ozone in liquid phase have been studied. Reaction with molecular oxygen (70°C, 15–16 hr) leads to the formation monoethers of the corresponding glycols with 68–90% selectivity. Salts of metals and complexes with crown-ethers have increased the reaction rate significally. Ozone have reacted with acetals with formation similar products. The mechanisms of intermediate stages have been proposed.     

Comparison of the Adhesion and Cohesion of Triblock and Random Copolymers of Styrene and Butadiene

A substantially greater detachment energy is required to strip a polyethylene tereph-thalate (Mylar) film from a styrene-butadiene-styrene (SBS) triblock copolymer compared to that for peeling from a random styrene-butadiene (SBR) copolymer. This is true even though the intrinsic interaction between the Mylar and each elastomer is expected to be similar because of their virtually identical chemical composition. It is proposed that this difference in peel strength (between the SBS and SBR) is a consequence of the much higher dissipative capacity of the former elastomer. Another manifestation of this is the higher cohesive tear strength of the SBS compared to the SBR. Extents of energy dissipation within each elastomer during detachment of the Mylar adherend are consistent with the hypothesis that the average maximum stress experience before detachment is some similar fraction of each elastomer's tensile strength.     

Wetting properties of homopolymers and copolymers of pentafluorostyrene and methylacrylate and homopolymer blends

Polypentafluorostyrene (PPFS), polymethylacrylate (PMA), and poly(pentafluorostyrene-co-methylacrylate), poly(PFS-co-MA) were prepared and the wetting characteristics of polymer blends of PPFS and PMA were compared with that of poly(PFS-co-MA) via contact angle measurements. The critical surface tension of polypentafluorostyrene was found to be 22.6 dyne/cm, which is comparable to the value reported for polytrifluoroethylene (22 dyne/cm). The critical surface tension of poly(PFS-co-MA) is not linearly related to its composition. The polymer blends of PPFS and PMA exhibit significant surface enrichment of the fluoropolymer. The harmonic-mean method¹ was employed to determine surface tensions of these polymers and many known polymers. It is found that the method produces useful surface tension data provided the contact angle values are derived from testing liquids of dissimilar polarity.     

实施水泵节能技改 实现节能降耗

介绍了内蒙古亿利化学工业有限公司在满足生产的前提下,对现有的循环水泵实施的节能技改及效果。     

泡沫起泡性、稳定性及评价方法

本文论述了泡沫的两个基本性质:起泡性和稳定性。对起泡性和提高泡沫稳定性的方法作了评价。