木质素添加剂与华亭和义马煤混合制取水煤浆

我公司德士古气化装置原料煤为义马煤,近期由于受煤炭市场行情的影响,煤质不稳定,到厂煤的灰分有时在30%以上,灰熔点达到1350C,超过了气化炉的设计指标,严重影响了气化炉的操作.公司准备用华亭煤与义马煤混合作为气化装置的原料,准备了两种方案:华亭煤占30%和华亭煤占50%两种试烧方案.     

德士古水煤浆加压气化试车总结

淮北集团公司的德士古水煤浆加压气化装置于2000年8月在美国德士古公司（Texaco)和日本宇部公司（UBE）专家指导下，进行化工投料试车，一次成功。在较短时间内（20天）转入试生产，创造了试车时间最短的记录，并在稳定运行的基础上，于2000年11月开始进行义马煤配华亭煤掺烧试验。目前，义马煤、华亭煤掺配比例占50％。该装置投运以来，经过半年的运行，显著生产能力大、运行安全稳定、操作弹性大的特点。截止到2001年1月底，已生产合成氨46kt。     

复合水煤浆添加剂对煤浆流动特性影响的实验研究

通过在华亭煤和新疆煤中分别加入木质素添加剂及新型复合添加剂制得水煤浆并进行实验研究。实验结果表明,新疆煤浆的流动性优于华亭煤浆,且新型复合添加剂对煤浆流动性的影响优于木质素添加剂。     

干煤粉加压气化技术的试验研究

介绍了投煤量为10kg/h~20kg/h加压气流床气化小型试验工艺条件的选择,并给出采用华亭煤在气化压力1.5MPa,投干粉煤量15kg/h条件下取得的主要试验数据。试验煤气产率达到1.94m3/kg,碳转化率96.9%,冷煤气效率78.5%,并列出相应的氧、煤、汽耗。试验结果基本达到预期目的,积累了干粉煤气流床气化数据,并提出今后中试时值得注意的问题。     

华亭FMTP项目废水处理工艺选择

为选定华亭FMTP项目配套污水处理工艺,实现投产后污水处理的达标排放,分析了污水预处理工艺、A2/O工艺、SBR工艺、MBBR工艺和BAF工艺的原理及各工艺的优缺点,结合华亭FMTP项目的实际情况和废水指标,预处理工艺选择混凝沉淀和气浮工艺,废水处理工艺选择了SBR和MBBR两级串联的处理工艺。     

简讯

甘肃华亭建设二甲醚生产装置甘肃省华亭县地处陕甘宁三省区交汇处,煤炭资源十分丰富,是甘肃最大的煤炭生产基地和全国100个重点产煤县之一。华亭煤田处于鄂尔多斯聚煤盆地中,煤层最厚的地段储量达3·47Gt,占甘肃全省已探明煤炭储量的40·2%。华亭煤炭具有“三高三低”(高挥发性、高化学活性、高发热量、低灰、低硫、低磷)的良好品质,目前该县正在利用其丰富优质的煤炭资源,大力发展煤化工产业,打造绿色煤都。继2007年1月31日华亭县在兰州与甘肃华天投资管理有限公司签订二甲醚开发项目意向性协议之后,2月8日,该县与甘肃华天投资管理有限公…     

热解温度对生物质和煤成焦特性的影响

以麦秆、橡树木屑和华亭烟煤为原料,研究热解产物的理化特性并讨论燃料种类和热解温度对其的影响.采用BET、SEM-EDS、XRD和TGA对其进行分析表征.结果表明:在600~1 000 ℃的温度范围内,煤焦的比表面积和孔隙容积随热解温度增加而增大,而木屑焦的变化不明显,麦秆焦在800 ℃时比表面积和孔隙容积最大,更高温度则发生烧结;焦样中C元素含量随热解温度升高而增加,而H元素和O元素随之降低,麦秆焦的着火特性优于木屑焦和煤焦.木屑焦和煤焦的着火特性随热解温度升高而变差,而麦秆焦在800 ℃具有最佳的着火特性.     

红柳林煤与华亭煤的比较和运行分析

渭化是以煤为原料生产化工产品,煤质好坏对于经济运行很重要。提供了红柳林煤较好煤质、较差煤质与华亭煤煤质的数据对比,提供了正式试烧时红柳林煤较差煤质与华亭煤较好煤质运行数据的对比,提供了红柳林煤较好煤质单烧的运行参考数据。通过对比认为:红柳林煤成浆性较好,产气量和有效气产率高,运行经济性好。装置运行安全稳定性好。     

华亭粉煤流化床气化

华亭矿粉煤经小型流化床气炉试烧表明,该煤种较为适合于直接粉煤气化,产气可作为化肥厂的原料气。     

甘肃华亭建设二甲醚生产装置

甘肃省华亭县地处陕甘宁三省区交汇处，煤炭资源十分丰富，是甘肃最大的煤炭生产基地和全国100个重点产煤县之一。华亭煤田处于鄂尔多斯聚煤盆地中，煤层最厚的地段储量达3．47Gt，占甘肃全省已探明煤炭储量的40．2%。华亭煤炭具有“三高三低”（高挥发性、高化学活性、高发热量、低灰、低硫、低磷）的良好品质，目前该县正在利用其丰富优质的煤炭资源，大力发展煤化工产业，打造绿色煤都。     

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。