云铜公司硫酸系统的技术改造

介绍云铜公司4个系列、总设计能力428kt/a的铜冶炼烟气制酸装置的技术改造。经过对电收尘器、填料塔、转化器等设备的改造及污水处理、尾气处理系统的设置，装置总设计能力达590kt/a，排水及尾气达到国家排放标准。     

铅锌冶炼烟气制酸系统的设计及运行总结

云南驰宏锌锗股份有限公司会泽冶炼分公司(以下简称会泽冶炼)60 kt/a粗铅、100 kt/a电锌及渣综合利用工程配套制酸装置的总产能设计值为240 kt/a。铅锌冶炼烟气制酸装置中,铅冶炼系统烟气φ(SO2)设计值为5.346%,最高为9%,气量设计值为58 842 m3/h;锌冶炼系统烟气φ(SO2)设计值为7.328%,最高为9.5%,气量设计值为86 254 m3/h。     

贵溪冶炼厂硫酸一系统技改简介

介绍360kt/a铜冶炼烟气制酸装置的技术改造。改造后，生产能力达到500kt／a，工艺系统和仪表系统运行正常。     

几套大型冶炼烟气制酸系统设计简介

介绍大冶有色金属公司270 kt/a铜冶炼烟气制酸系统、河南豫光金铅集团65 kt/a铅冶炼烟气制酸系统、株洲冶炼厂68 kt/a铅冶炼烟气制酸系统、金川公司660 kt/a镍冶炼烟气制酸系统、河南豫光金铅集团160 kt/a锌冶炼烟气制酸系统的工艺特点及主要设备.分析国产大型化设备和催化剂与进口产品的差距,建议企业根据投资和收益、环保以及生产稳定性等因素,结合自身的实际情况来选择使用国产设备和催化剂或进口.     

1600kt/a高浓度冶炼烟气制酸装置节能实践

正广西金川有色金属有限公司(以下简称金川有色)采用闪速炉熔炼-闪速炉吹炼-阳极炉精炼-电解精炼工艺生产阴极铜,设计阴极铜产能400kt/a,配套冶炼烟气制酸装置1600kt/a。金川有色1600kt/a硫酸装置是我国目前技术装备水平较高的系统之一,集中采用了孟莫克公司预转化工艺、低温热回收HRS工艺及离子液循环脱硫工艺等新技术[1]。该装置处理高浓度SO_2烟气制酸,采用高效节能技术     

始动炉自动点火装置

介绍306kt/a铜冶炼烟气制酸装置转化系统始动炉点火装置的设计依据、点火程序和现场仪表盘。     

铜冶炼烟气制酸预转化技术应用实践

介绍了华鼎铜业冶炼烟气制酸装置技改情况,在原有400 kt/a硫酸装置的基础上配套建设预转化装置,采用四段一次预转化技术,回收转化器一、二段催化剂床层反应热产蒸汽,装置生产能力采用弹性设计以应对硫酸市场,设置专用升温管线节约能源。预转化装置一次试车达到设计目标,硫酸基本产能850 kt/a,最大产能达到1 000 kt/a,产出210℃、1.6 MPa低压饱和蒸汽24 t/h,降低了生产成本,为冶炼烟气制酸行业新技术的应用起到了很好的示范作用。     

"十五"有色金属冶炼、烟气制酸回顾及"十一五"发展趋势

2005年,我国10种有色金属产量达16 318.4 kt,有色金属烟气制酸产量为9 810 kt,占硫酸总产量的21.2%."十五"期间烟气制酸装置的发展特点是大型化以及采用新工艺、新材料、新设备."十一五"期间,随着我国有色金属冶炼行业的稳步发展,冶炼烟气制酸的规模及产量仍会呈递增局面,预计将新增产能6 000 kt/a,总产能将达到16 000 kt/a.建议开发拥有自主知识产权的高浓度烟气制酸技术,继续开发新型耐腐蚀材料和高效设备,进一步回收低温位热能,减少废物排放.     

三级氨法吸收尾气中SO2生产固体亚硫酸铵

我厂硫酸生产共有三套装置,总能力为200kt/a。第一套装置为50年代初苏联设计的40kt/a硫铁矿制酸装置,于1958年投产,采用一转一吸工艺。第二套装置于1971年投产,为80kt/a的一转一吸硫铁矿制酸装置。第三套装置于1977年投产,为80kt/a的一转一吸硫磺制酸装置。硫磺制酸装置采用两级氨法回收尾气中的二氧化硫。两套矿制酸的尾气回收,原用泡沫塔加一级复喷复挡的两级氨法回收装置。由于装置本身     

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。     

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.     

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.     

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。