SIL定级技术要求及风险图法在SIL定级中的应用

综述了近年来国际标准中对于安全仪表功能(SIF)以及安全完整性等级(SIL)的定义及要求,结合近年来国际上相关研究,探讨了在SIL定级中运用相对简单的风险图法,结果表明可以获得和运用LOPA一样的结果。     

公路滑坡灾害链式反应阶段性识别方法研究

为了对公路滑坡的发育阶段做出准确判别,研究了公路滑坡灾害发育的链式反应机理,将滑坡的发育阶段划分为3个阶段。采用广泛调研和专家咨询的技术手段,从发育阶段的表现特征中选定了滑坡识别的相关因素集和评分,在此基础上采用模糊数学的方法对公路滑坡灾害的发育阶段进行了识别,并在陕南公路滑坡调查中初步应用。     

对未遂事件发生原因重要度排序方法的探讨

介绍了灰色关联度计算的原理,并用灰色关联度方法对未遂事件的诱发原因进行了实例分析。     

炼厂氢气网络优化的计算方法

基于氢夹点理论和超结构理论,提出一套考虑燃料气价值的氢气网络优化计算方法,计算结果更加合理、经济、实用。运用此方法,不仅能定量评估某个加氢装置操作方式的合理性,而且能根据炼厂的氢气网络计算提出合理的优化运行方案。     

关于深化企业清洁生产工作的思考

从3个支撑体系着手,提出了企业做好清洁生产工作的措施:加强管理、优化技术、开展审核,建立清洁生产长效机制。     

中国石化HSE管理系统建设及应用

结合中国石化HSE管理系统的建设情况,介绍了中国石化HSE管理系统建设的背景、系统总体架构、试点建设范围、系统功能及在试点企业的应用成效。     

原油及其加工过程中汞的形态及分布

从原油中汞的形态及含量、石油加工产品中汞形态和分布以及石油加工过程汞的排放估算三万面综述了国内外相关研究的成果,并在此基础上对中国石化下一步汞污染控制提出了建议.     

Carboxymethyl‐β‐cyclodextrin influence on the solubility and toxicity of substituted indole compounds

The solubilization of eight selected substituted indole compounds (SICs) by carboxymethyl‐β‐cyclodextrin (CMCD) in water is reported. The results show that their solubility was well improved in CMCD aqueous solution, and the stoichiometry of inclusion complex of the studied SICs with CMCD was 1: 1. The acute toxicity to Photobacterium phosphoreum of the investigated SICs in CMCD aqueous solutions was also investigated and was compared with that in water. The results show that the toxicity of five studied SICs decreased while the toxicity of the rest three SICs increased in CMCD aqueous solutions, but neither the increase nor the decrease was significant.     

港东联合站外排污水深度处理工艺研究

为解决港东联合站外排污水2010年前达标排放的问题,需在现有氧化塘生化处理工艺的基础上,进行工艺优化和深度处理。通过对港东联合站外排污水的分析,发现现有处理系统的问题,并结合水质特性和现有处理工艺进行试验研究。结果表明:采用曝气生物滤池工艺,以兼性塘进水为水源,流量150L/h,BAF对CODCr的去除率为68.1%;采用活性炭吸附技术,在水力负荷不超过2.1m3/(m2.h)情况下,活性炭出水CODCr平均值为27.3～37.4mg/L,对CODCr的去除率在60%以上;曝气生物滤池与活性炭吸附工艺对CODCr、石油类、悬浮物的处理指标都达到了天津市地方标准DB12/356-2008《污水综合排放标准》的要求。     

A pilot study for determining the optimal operation condition for simultaneously controlling the emissions of PCDD/Fs and PAHs from the iron ore sintering process

In this study, the cost-benefit analysis technique was developed and incorporated into the Taguchi experimental design to determine the optimal operation combination for the purpose of providing a technique solution for controlling both emissions of PCDD/Fs and PAHs, and increasing both the sinter productivity (SP) and sinter strength (SS) simultaneously. Four operating parameters, including the water content, suction pressure, bed height, and type of hearth layer, were selected and all experimental campaigns were conducted on a pilot-scale sinter pot to simulate various sintering operating conditions of a real-scale sinter plant. The resultant optimal combination could reduce the total carcinogenic emissions arising from both emissions of PCDD/Fs and PAHs by 49.8%, and increase the sinter benefit associated with the increase in both SP and SS by 10.1%, as in comparison with the operation condition currently used in the real plant. The ANOVA results indicate that the suction pressure was the most dominant parameter in determining the optimal operation combination. The above result was theoretically plausible since the higher suction pressure provided more oxygen contents leading to the decrease in both PCDD/F and PAH emissions. But it should be noted that the results obtained from the present study were based on pilot scale experiments, conducting confirmation tests in a real scale plant are still necessary in the future.