PDS催化剂在黄磷尾气脱硫中的催化活性研究

回收利用黄磷尾气,必先除去其中的S、P、F、As等杂质。PDS催化剂已被用于煤制合成气和焦炉煤气脱硫。本文考察了PDS催化剂脱除黄磷尾气中H2S的催化活性,证明PDS对硫化物的脱除完全能达到工业应用的效果,且黄磷尾气中P、F、As等杂质对PDS催化脱硫活性影响很小。     

JC系列催化剂上氧化脱除黄磷尾气中PH_3、H_2S

采用活性炭为载体,利用浸渍法在常温下制备了4种JC系列催化氧化催化剂。通过考察,在常压、温度60～100℃、气体流量0 375m3/h条件下,JC系列催化剂能够净化除去黄磷尾气中难以脱除的PH3、H2S杂质。其中JC-4型催化剂净化效果最好,可以脱除尾气中的PH3、H2S至其含量小于10-6。     

变温和变压吸附法从黄磷尾气净化回收一氧化碳

黄磷尾气的回收利用势在必行 ,但目前的回收工艺存在一些缺点。本文针对常用净化方法的缺点 ,通过实验测定了吸附法处理黄磷尾气的效果 ,得到了较佳的工艺操作参数 ,提出了处理黄磷尾气的新的工艺流程。     

尾气脱硫装置中低压湿式气柜的设计

对某黄磷尾气综合利用项目尾气脱硫装置中低压湿式气柜的设计,包括低压湿式气柜的选用原则、工作原理、结构型式和主要尺寸、及制造安装应注意的问题进行了阐述和分析。     

贵州鑫新集团黄磷尾气综合利用项目开工

<正>2014年3月11日,贵州鑫新集团贵州中凯鑫磷化工有限公司黄磷尾气综合利用制5万吨/年草酸酯、3万吨/年乙二醇项目开工。该项目位于贵州省贵阳市,采用天津大学乙二醇工艺技术,以黄磷尾气为原料,生产乙二醇,解决长期以来黄磷生产装置尾气出路,实现新技术的产业化,达到经济建设和生态文明和谐发展。项目一期工程总投资为6     

气相色谱法测定C_4烃中的微量杂质

以癸二腈0.8m×4mm+聚乙二醇-20M2.2m×4mm为填充柱,采用液相进样阀液态直接进样的填充柱气相色谱法分析了丁烯水合尾气C4烃中的C5、叔丁醇、二仲丁醚、甲乙酮及仲丁醇等微量杂质的含量。分析结果表明,自制的填充色谱柱对丁烯水合尾气C4烃中的主要杂质具有良好的分离效果,各杂质组分之间的分离度均大于1.5;在检测范围内各杂质组分的含量与峰面积呈良好的线性关系,标准工作曲线回归方程的相关系数分别为0.997 8,0.999 6,0.999 0,0.999 8,0.999 4。该分析方法具有良好的准确度和精密度,各杂质组分的相对标准偏差均小于5%,加样回收率在97%~102%之间。该分析方法简单,试样不需前处理过程,可推广应用于C4烃类及相似试样中微量杂质含量的分析。     

富含一氧化碳工业尾气中不饱和烃的脱除

大连凯特利催化工程技术有限公司开发了适用于富含CO气源中的加氢脱炔催化剂T-342和加氢脱烯烃催化剂T-841。针对电石炉尾气、天然气乙炔炉尾气等富含一氧化碳工业尾气中杂质不饱和烃的脱除,采取先脱炔烃再脱烯烃的组合方案,分别考察脱炔催化剂空速和两种催化剂装填比例对脱除效率的影响。1209h催化剂稳定性测试结果显示这两种催化剂可以有效脱除CO气源中的炔烃和烯烃,满足下游工艺对不饱和烃杂质的净化指标。     

动态简讯

变压吸附技术被推荐用于治理和回收黄磷尾气；我国凝析油气田开采技术全球领先。     

国内简讯

国内简讯羰化合成苯乙酸新工艺开发成功西南化工研究院三室用富含ＣＯ的黄磷尾气精制气、铜氨合成精炼尾气中的ＣＯ，与氯苄进行催化反应合成苯乙酸工艺开发成功。苯乙酸收率可达８５％，产品纯度≥９９％，催化剂钴回收率为９４％。羰化合成苯乙酸新工艺技术的开发成功，...     

从FCC和DCC装置尾气中回收有价值的烯烃

FCC和DCC装置尾气虽然含有5%～20%(体积分数)的氢气、乙烯和丙烯等有价值的产物,但由于尾气中含有对下游工艺不安全的物质,如重金属、硫、炔烃(乙炔、甲基乙炔)、二烯烃(丙二烯和丁二烯)、NOx和O2等,因此尾气一般只用作燃料。若能脱除尾气中的这些杂质,则可回     

顺,反,顺-1,2,3,4-环丁烷四甲酸二酐的合成

以碳酸二乙酯为溶剂,顺丁烯二酸酐为原料,在紫外光的照射下进行[2+2]环加成反应,制备得到顺,反,顺-1,2,3,4-环丁烷四甲酸二酐,并通过IR和1 H NMR对其结构进行了确证。实验结果表明,较佳反应条件是:顺丁烯二酸酐浓度为9%,高压汞灯照射,反应时间4h,反应温度6℃,产品顺,反,顺-1,2,3,4-环丁烷四甲酸二酐的产率为82.6%,纯度可达99.2%。     

New Modifications Bart,Bdchamp, Mayer,Rosenmund, Scheller,Sherlyn-Braz Reactions with Halides of Arsenic,Antimony and Bismuth

It was discovered a new approach modification Bart, Beschamp, Mayer, Rosenmund, Scheller, Sherlyn-Braz reactions with of arsine, stibine and bismuthine in organometallic chemistry. The authors have proposed a new mechanism for possible reactions.     

Search for New Three-, Four-Component Petasis,Passerini, Hantzsch,Kabachnic-Fields,Ugi Reactions with Organic Compounds of Phosphorus,Arsenic, Antimony and Bismuth

It is discovered a new three-, four-component Petasis, Passerini, Hantzsch, Kabachnic-Fields, Ugi reactions with of arsine, stibine and bismuthine in organometallic chemistry. Modifications were replaced to a nitrogen atom of classical reactions of atoms of phosphorus, arsenic, antimony and bismuth. It has been proposed a new mechanism for possible reactions.     

水淹枯竭气藏型地下储气库盘库方法

地下储气库多周期运行盘库,是研究气库运行规律、分析漏失、进一步提高气库运行效率和降低气库运行成本的关键环节。已建立的未水淹气藏型地下储气库盘库数学模型却并不适用于水淹枯竭气藏型地下储气库,评价结果明显高于实际注采气量。为此,通过深入分析水淹枯竭气藏型地下储气库气驱排水扩容机理、多周期注采运行过程中气水两相宏观与微观运动规律及可能的分布状态,创新性提出了可动用库存量的概念,以注采气量与视地层压力在一个注采周期内满足定容压升降方程为评价准则,建立了水淹枯竭气藏型地下储气库盘库模型。实例验证结果表明,该模型计算的结果与实际吻合,可用于水淹枯竭气藏型地下储气库多周期运行盘库计算和分析。为储气库运行、管理及调整提供了依据。     

Solid waste issue: Sources,composition, disposal,recycling, and valorization

Disposal of solid wastes is a stinging and widespread problem in both urban and rural areas in many developed and developing countries. Municipal solid waste (MSW) collection and disposal is one of the major problems of urban environment in most countries worldwide today. MSW management solutions must be financially sustainable, technically feasible, socially, legally acceptable and environmentally friendly. Solid waste management issue is the biggest challenge to the authorities of both small and large cities’.Valorization of food organic waste is one of the important current research areas. The conventional landfill, incineration, composting, and ways of handeling solid wastes are common as mature technologies for waste disposal. Traditionally, the most commonly used technologies for the treatment and valorization of the organic fraction of MSW are composting and anaerobic digestion (AD). The generation of organic solid waste (OSW); worldwide; is dramatically increasing each year. Most of the OSW’s are composed of agricultural waste, household food waste, human and animal wastes, etc. They are normally handled as animal feed, incinerated or disposed to landfill sites. OAW’s are comprised of materials rich in proteins, minerals, and sugars that could be used in other processes as substrates or raw materials.     

PERMIAN TO TERTIARY FAUNAS AND PALEOGEOGRAPHY: SOMALIA, KENYA, TANZANIA, MOZAMBIQUE, MADAGASCAR, SOUTH AFRICA

Permian to Tertiary faunas along the eastern margin of Africa, and on Madagascar, are presented, described, and discussed. Presentation of the faunas is made in four charts: Permo-Triassic, Jurassic, Cretaceous, and Tertiary. A correlation chart provides tentative time-rock units. Paleogeography northeast and east of Africa is derived from the writer's analysis of marine invertebrate fauna, and is delineated in sketches for Late Permian, Jurassic, and Cretaceous times. Limitations exist on the conclusions that can be drawn from fauna alone. Pelagic waters can be indicated, but their extent cannot be specified, and lack of diversification in some of the pelagic genera results in unavoidable ambiguities of interpretation. Nothing in the faunal evidence so far available, however, disproves unequivocally the existence of an ancestral Indian Ocean from Late Permian onward. Even if such an ancestral ocean did not exist the pattern of pelagic waters that can be inferred from marine invertebrate fauna constitutes an impediment to models that suture Australia or India to Africa or Madagascar. Peninsular India, on readings of its own geology across the foreland-orogen boundary, may have occupied its present position through the whole of geologic time.     

泌阳凹陷陡坡带砂砾岩体预测

在对泌阳凹陷陡坡带砂砾岩体空间展布预测中,以层序地层学研究为基础,依据古地貌沟扇对应理论,利用地震属性分析技术和地震反演技术,寻找砂砾岩扇体并确定其分布边界.预测结果,在陡坡带边界断层附近发现了新的砂砾岩扇体,在深凹区过渡带发现了浊积砂体,均为有利的油气聚集区,经钻探获得了良好效果,对陡坡带砂砾岩体的勘探起到 较好的指导作用.图3参10