工程建设的指南——评《天然气输配工程》

介绍了《天然气输配工程》一书的编写背景、主要内容、创新特点、作用与意义。     

煤气站改进前后的Yong分析

文章对煤气站装置改进前后进行了Yong分析，论述其余热的利用价值及提出提高能源利用率的措施——预热回收装置，并提出了以热管废热锅炉为核心的煤气站节能技术改造。     

低压燃气在ZP18A型制瓶机中的应用

介绍了阳泉市燃气管网的现状 ,对燃气的流量缓冲罐及配重进行了设计计算 ,经对这一工程进行全部配套设计、施工及通气试产 ,使用效果良好 ,产品合格率达到了要求。     

焦炉基础下喷管固定方法

结合施工实例，从控制网、炉底框架、模板、混凝土、下喷管、固定架等方面介绍了焦炉基础顶板下喷管的施工作法，指出该施工工艺简单，经济效益明显，值得推广应用。     

Reaction processes effecting the analysis of chloroform by direct aqueous injection gas chromatography

Several important reaction processes which influence the analysis of chloroform by direct aqueous injection (DAI) gas chromatography have been identified through an investigation of the chlorination reactions of humic acid and a series of simple polyhydroxyaromatic and diketone model compounds in dilute solution. The reaction of chlorine with each substrate system was studied over the pH range 2–12. Gas chromatographic analysis by the DAI and organic solvent liquid-liquid extraction (LLE) procedures gave different measurements for the yield of CHCl₃ depending on the pH of the reaction solution and the chemical structure of the substrate. Under acidic and neutral conditions, a variety of trichloromethyl-substituted intermediates were identified at high concentrations in addition to chloroform by GC/MS. Chloral hydrate, trichloroacetic acid, pentachloroacetone and hexachloroacetone undergo hydrolysis and/or decarboxylation to form CHCl₃ at the high injection port temperatures employed in aqueous injection GC analysis. The results obtained in the current study indicate that the decomposition of these and structurally-related species accounts for differences previously observed upon application of the DAI and either the LLE or purge-and-trap techniques for the determination of CHCl₃ in chlorinated natural waters.     

气体灭火系统在投标预算中应注意的问题

从气体灭火系统、供货厂家、施工组织设计方案、试压方案、调试方案、验收成本等方面对气体灭火系统在投标预算实践中出现的问题进行了分析,并提出了一系列有参考价值的建议,以合理确定投标价。     

水煤气两段炉生产过程报警与联锁

介绍了水煤气两段炉生产过程中参数报警的原因及处理措施，并介绍了安全联锁的设置部位及其作用。     

长距离输气管道工程投资估算的编制

结合工程实例,论述了长距离输气管道工程投资估算的编制方法及编制过程中需要注意的问题。     

静压PHC管桩穿越卵石层引孔施工技术探讨

本文结合云霄翔球广场一期工程静压PHC管桩施工实例,对2#楼主楼采用先引孔后压桩法施工技术和施工工艺,使桩端穿过砂层及卵石层进入持力层深度及有效桩长满足设计及规范要求,以保证施工质量和工期。     

老新村住宅整改过程中燃气引入管设计探讨简

为改善民生,近年来苏州市对影响居民基本生活条件的老住宅小区进行了全面整治与改造。文章以苏州市红旗新村整改为例,探讨了老新村住宅整改过程中引起燃气引入管的设计困难与处理办法,并建议在住宅、公建等相关项目设计中,应尽早与燃气设计人员沟通,确保工程顺利进行。