扬子乙烯装置改造项目启动

被列为国家首批财政贴息技改工程的扬子65万t乙烯技改工程已开始启动。扬子石化新增乙烯裂解炉软件合同于前不久在北京签字。这标志着扬子石化新一轮改造已进入实施阶段。扬子乙烯装置改造工程预计于2002年竣工投产,建成后将新增商品     

扬子石化乙烯装置改造工程启动

国家首批财政贴息技术改造工程,总投资约45亿元的扬子石化有限责任公司年产65万ｔ乙烯改造工程开始启动,新增乙烯裂解炉软件合同日前在北京签字。这标志着扬子石化公司新一轮改造已进入实施阶段,整个改造工程将于2002年建成投产。改造工程包括新增4台10万ｔ级乙烯裂解炉,...     

扬子石化公司65万t/a乙烯改造工程开始启动

根据我国石油化工发展战略 ,“九五”期间 ,我国石油化工发展主要是靠对现有企业进行技术改造 ,走内涵式发展道路。扬子石化公司 6 5万ｔ/ａ乙烯改造工程就是其中之一。目前 ,扬子石化公司 6 5万ｔ/ａ乙烯改扩工程开始启动 ,新增乙烯裂解炉软件合同于 1 999年 1 1月2 3日在北京签字。这标志着扬子石化公司新一轮技术改造已进入实施阶段。扬子石化公司 6 5万ｔ/ａ乙烯改造工程被列为国家首批贴息技改工程。乙烯改造工程包括 :新增 4台 1 0万ｔ/ａ乙烯裂解炉 ,使乙烯产能由 4 0万ｔ/ａ增加到 6 5万ｔ/ａ,乙烯裂解炉技术是由中国石化集团公司和…     

化工原料

扬子石化65万t/a乙烯改造工程全面建成 享受国家财政贴息支持的国家重点技改项目、投资43.5亿元的扬子石化65万t/a乙烯改造工程的最后1套化工生产装置—乙烯装置实现中间交接,选标志着扬子石化新一轮改造已经全面完工,预计10月前打通全流程。新装置的建成,将扩大扬子石化的产品规模,改善产品结构,壮大竞争实力,也为我国经济的进一步发展提供更多的基础原料支持。     

扬子百万吨塑料供应基地初具规模

扬子石化65万吨乙烯改造工程的最后一套终端产品装置——20万吨/年聚乙烯装置日前一次开车成功,并产出了晶莹剔透的高品质塑料产品。 至此,扬子石化第二轮乙烯改造工程新建丁二烯、聚丙烯和聚乙烯所有三套终端产品装置全     

扬子乙烯改扩建工程的内容及考核

叙述了扬子乙烯改扩建工程改造的方案及其改造后投料试车与考核试验的情况。     

扬子石化乙烯改造项目通过环保评估

扬子石化65万吨/年乙烯改造项目最近通过国家环保总局等方面专家的环境评估,从而为扬子新一轮改造发出了第一张“绿色通行证”.     

扬子石化增加聚乙烯生产能力

扬子石化去年完成的65万吨乙烯改造,使该公司聚乙烯年生产能力达到了40万吨。为使乙烯改造后的效益得到充分发挥,该公司于6月18日开工建设聚     

扬子石化烯烃厂将打造中国石化最佳烯烃工厂

近期扬子石化烯烃厂紧紧抓住国家调整和振兴石化产业的时机，加快推进三轮乙烯改造、18万吨环氧改造、1#乙烯节能改造等项目的实施进度．通过硬实力和软实力的提高来保持并增强企业的核心竞争力，全力打造“中国石化最佳烯烃工厂”。     

扬子公司650 kt/a乙烯改造工程通过竣工验收

扬子石油化工股份有限公司(简称扬子石化)650kt／a乙烯改造工程经过2年多的试生产．于2004年12月17日通过了中国石化集团公司和江苏省南京市有关部门组织的竣工验收。     

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.