低浓度二氧化硫冶炼烟气处理工艺

介绍了有色冶炼行业低浓度二氧化硫烟气的处理工艺,包括烟气脱硫、非稳态转化工艺、WSA工艺、一转一吸加尾吸工艺、常规两转两吸制酸工艺。企业应结合自身的实际情况,根据冶炼系统不同的烟气浓度和烟气量,选择合适的处理工艺。     

韶关冶炼厂低浓度烟气两转两吸制酸工艺的设计及生产实践

介绍了铅锌烧结机低浓度二氧化硫烟气两转两吸制酸工艺,该工艺采用了大型耐火砖球形拱转化器,Ⅳ Ⅰ-Ⅲ、“3＋1”2次转化流程,干吸工序采用高温吸收工艺,对生产过程中出现的问题及采取的措施作了较详细的介绍。     

铅锌烧结机烟气两转两吸制酸装置的设计与试生产总结

对铅锌烧结机烟气制酸装置的转化和干吸系统进行改造。新建一套160kt/a转化系统代替原两套系统，改一转一吸流程为两转两吸流程，采用高温吸收工艺。4个月的试生产实践证明，装置运行良好，能够保持自然平衡，尾气排放达到设计标准。     

我国有色冶炼低浓度二氧化硫烟气制酸技术进展

随着有色金属工业的发展和国家环保要求的日益严格，我国有色冶炼低浓度二氧化硫烟气制酸取得了较大进展，采用常规两转两吸制酸实现自热平衡；引进WSA制酸工艺；成功开发非稳态转化制酸工艺，并得到推广应用。     

我国冶炼烟气制酸的现状及发展前景

论述我国冶炼烟气制酸的现状和特点，预测发展趋势。随着我国有色金属产能的稳步提高，冶炼烟气制酸得到较快的发展，2002年冶炼烟气制酸产量占硫酸总产量的22％，预计到2010年将达12000kt。不同的烟气采用不同的制酸工艺，如常规两转两吸工艺、非稳态转化工艺、湿式硫酸工艺，但仍以常规两转两吸工艺为主。与此同时，由于先进技术的引进和开发，我国冶炼烟气制酸装置的技术装备水平有了很大的提高。     

烟台鹏晖铜业有限公司60kt／a铜冶炼烟气制酸系统的设计和生产实践

介绍了密闭鼓风炉富氧熔炼＋两台连吹炉＋造块炉冶炼烟气制酸系统的设计特点，并针对生产中出现的问题进行了改进和完善，最终实现了两转两吸工艺。     

预转化工艺在铜冶炼烟气制酸装置中的运用

介绍了赤峰云铜有色金属有限公司350 kt/a铜冶炼烟气制酸装置工艺流程和转化工序技术改造情况改造后制酸装置采用部分烟气预转化吸收与现有二转二吸装置串联运行的方式,主转化吸收系统采用原有ⅢⅠ-ⅣⅡ"3+1"二转二吸工艺,预转化吸收系统采用4段床层转化器一转一吸工艺。改造后装置各项运行指标均达到设计值,冶炼系统熔矿量由改造前的52 t/h提高到60.5 t/h,硫酸产量由1100t/d提高到1204t/d,蒸汽广量由21 t/h提高到31t/h,制酸电耗由103.24 kWh/t降低到97.18 kWh/t,SO₂主风机出口烟气最高φ（SO₂）由9.53%提高到12.44%,总转化率由99.7%提高到99.8%。     

贵溪冶炼厂硫酸二系统概述

介绍了贵溪冶厂新建的炼铜烟气制酸系统的工艺落，主要设备及工艺参数，净化工序采用了二级动力波洗涤器，转化工序采用ⅢⅠ－ⅣⅡ、“３＋１”两转两吸流程。     

冶炼烟气焚硫制酸装置的影响因素与对策

在已建成“稀酸洗净化－转－吸”冶炼烟气制酸装置的基础上，通过增建熔硫焚硫系统，用低ＳＯ２冶炼烟气焚硫制酸，以改善装置的运行条件，年增产硫酸２０ｋｔ，重点分析冶炼烟气质量和硫磺质量对装置运行的影响。提出装置目前存在的问题和对策     

S101-2H(y)、S107-1H(y)型菊形环钒催化剂特点与应用

阐述菊形环钒催化剂特点,通过硫铁矿制酸两转两吸转化工艺和低浓度冶炼烟气制酸非稳态转化工艺使用,根据操作数据初步证实,它具有通气阻力小、活性稳定、低温活性好、堆密度小、强度较高、抗粉化能力强等特点。与普通型钒催化剂相比,在相同装填量下转化率高,硫酸产量得以提高,经济效益较明显。     

Insect antifeedant properties of anthranoids from the genusVismia

Vismiones and ferruginins, representatives of a new class of lypophilic anthranoids from the genusVismia were found to inhibit feeding in larvae of species ofSpodoptera, Heliothis, and inLocusta migratoria.     

Direct observation of freeze-thaw instability of latex coatings via high pressure freezing and cryogenic SEM

Despite its industrial importance, the subject of freeze-thaw (F/T) stability of latex coatings has not been studied extensively. There is also a lack of fundamental understanding about the process and the mechanisms through which a coating becomes destabilized. High pressure (2100 bar) freezing fixes the state of water-suspended particles of polymer binder and inorganic pigments without the growth of ice crystals during freezing that produce artifacts in direct imaging scanning electron microscopy (SEM) of fracture surfaces of frozen coatings. We show that by incorporating copolymerizable functional monomers, it is possible to achieve F/T stability in polymer latexes and in low-VOC paints, as judged by the microstructures revealed by the cryogenic SEM technique. Particle coalescence as well as pigment segregation in F/T unstable systems are visualized. In order to achieve F/T stability in paints, latex particles must not flocculate and should provide protection to inorganic pigment and extender particles. Because of the unique capabilities of the cryogenic SEM, we are able to separate the effects of freezing and thawing, and study the influence of the rate of freezing and thawing on F/T stability. Destabilization can be caused by either freezing or thawing. A slow freezing process is more detrimental to F/T stability than a fast freezing process; the latter actually preserves suspension stability during freezing. Presented at the 82nd Annual Meeting of the Federation of Societies for Coatings Technology, October 27–29, 2004 in Chicago, IL. Tied for first place in The John A. Gordon Best Paper Competition.     

Ethanol and (−)-α-Pinene: Attractant Kairomones for Bark and Ambrosia Beetles in the Southeastern US

In 2002–2004, we examined the flight responses of 49 species of native and exotic bark and ambrosia beetles (Coleoptera: Scolytidae and Platypodidae) to traps baited with ethanol and/or (−)-α-pinene in the southeastern US. Eight field trials were conducted in mature pine stands in Alabama, Florida, Georgia, North Carolina, and South Carolina. Funnel traps baited with ethanol lures (release rate, about 0.6 g/day at 25–28°C) were attractive to ten species of ambrosia beetles (Ambrosiodmus tachygraphus, Anisandrus sayi, Dryoxylon onoharaensum, Monarthrum mali, Xyleborinus saxesenii, Xyleborus affinis, Xyleborus ferrugineus, Xylosandrus compactus, Xylosandrus crassiusculus, and Xylosandrus germanus) and two species of bark beetles (Cryptocarenus heveae and Hypothenemus sp.). Traps baited with (−)-α-pinene lures (release rate, 2–6 g/day at 25–28°C) were attractive to five bark beetle species (Dendroctonus terebrans, Hylastes porculus, Hylastes salebrosus, Hylastes tenuis, and Ips grandicollis) and one platypodid ambrosia beetle species (Myoplatypus flavicornis). Ethanol enhanced responses of some species (Xyleborus pubescens, H. porculus, H. salebrosus, H. tenuis, and Pityophthorus cariniceps) to traps baited with (−)-α-pinene in some locations. (−)-α-Pinene interrupted the response of some ambrosia beetle species to traps baited with ethanol, but only the response of D. onoharaensum was interrupted consistently at most locations. Of 23 species of ambrosia beetles captured in our field trials, nine were exotic and accounted for 70–97% of total catches of ambrosia beetles. Our results provide support for the continued use of separate traps baited with ethanol alone and ethanol with (−)-α-pinene to detect and monitor common bark and ambrosia beetles from the southeastern region of the US.     

Methyl 2,4,6-decatrienoates Attract Stink Bugs and Tachinid Parasitoids

Halyomorpha halys (Stål) (Pentatomidae), called the brown marmorated stink bug (BMSB), is a newly invasive species in the eastern USA that is rapidly spreading from the original point of establishment in Allentown, PA. In its native range, the BMSB is reportedly attracted to methyl (E,E,Z)-2,4,6-decatrienoate, the male-produced pheromone of another pentatomid common in eastern Asia, Plautia stali Scott. In North America, Thyanta spp. are the only pentatomids known to produce methyl 2,4,6-decatrienoate [the (E,Z,Z)-isomer] as part of their pheromones. Methyl 2,4,6-decatrienoates were field-tested in Maryland to monitor the spread of the BMSB and to explore the possibility that Thyanta spp. are an alternate host for parasitic tachinid flies that use stink bug pheromones as host-finding kairomones. Here we report the first captures of adult and nymph BMSBs in traps baited with methyl (E,E,Z)-2,4,6-decatrienoate in central Maryland and present data verifying that the tachinid, Euclytia flava (Townsend), exploits methyl (E,Z,Z)-2,4,6-decatrienoate as a kairomone. We also report the unexpected finding that various isomers of methyl 2,4,6-decatrienoate attract Acrosternum hilare (Say), although this bug apparently does not produce methyl decatrienoates. Other stink bugs and tachinids native to North America were also attracted to methyl 2,4,6-decatrienoates. These data indicate there are Heteroptera in North America in addition to Thyanta spp. that probably use methyl 2,4,6-decatrienoates as pheromones. The evidence that some pentatomids exploit the pheromones of other true bugs as kairomones to find food or to congregate as a passive defense against tachinid parasitism is discussed.     

2005～2006年国外塑料工业进展

收集了2005年7月～2006年6月国外塑料工业的相关资料，介绍了2005—2006年国外塑料工业的发展情况。提供了世界塑料产量、消费量及全球各类树脂生产量以及各国塑料制品的进出口情况。作为对比，介绍了中国塑料的生产情况。按通用热塑性树脂（聚乙烯、聚丙烯、聚苯乙烯、聚氯乙烯、ABS树脂）、工程塑料（聚酰胺、聚碳酸酯、聚甲醛、热塑性聚酯、聚苯醚）、通用热固性树脂（酚醛、聚氨酯、不饱和树脂、环氧树脂）、特种工程塑料（聚苯硫醚、液晶聚合物、聚醚醚酮）的品种顺序，对树脂的产量、消费量、供需状况及合成工艺、产品开发、树脂品种的延伸及应用的扩展作了详细的介绍。     

2007～2008年世界塑料工业进展

收集了2007年7月～2008年6月世界塑料工业的相关资料,介绍了2007～2008年国外塑料工业的发展情况,提供了世界塑料产量、消费量及全球各类树脂的需求量及产能情况.按通用热塑性树脂(聚乙烯、聚丙烯、聚苯乙烯、聚氯乙烯、ABS树脂)、工程塑料(尼龙、聚碳酸酯、聚甲醛、热塑性聚酯、聚苯醚)、特种工程塑料(聚苯·硫醚、液晶聚合物、聚醚醚酮)、通用热固性树脂(酚醛、聚氨酯、不饱和聚酯树脂、环氧树脂)不同品种的顺序,对树脂的产量、消费量、供需状况及合成工艺、产品应用开发、树脂品种的延伸及应用的进一步扩展等技术作了详细介绍.