提高设备及管道保温规格化水平

生产装置设备及管道保温规格化是炼油化工设备管理的重要组成部分．同时是企业节能工作的重要环节，本文分析了气压机蒸汽管道保温改造的成败，列举了装置现场保温规格化的通病、常见部位和治理方法，并介绍绝热工程施工维护要点，来提高装置现场保温规格化水平。     

一种基于太阳能一体化技术的废旧塑料再生系统

正本发明公开了一种基于太阳能一体化技术的废旧塑料再生系统,包括收集太阳能作用的碟式集热跟踪装置、储存热能的蓄热保温装置和螺旋加热混炼装置;碟式集热跟踪装置通过储热循环管道与蓄热保温装置串联;蓄热保温装置通过供热循环管道与螺旋加热混炼装置串联;PC控制器用导线分别与碟式集热跟踪装置、蓄热保温装置、螺旋     

消防栓保温装置保温性能的计算与测试

本文就消防栓保温装置在保温材料一定的情况下,对不同厚度和地上不同高度的保温装置的保温性能,进行了理论计算和实际测试,计算与测试结果相符合。     

温控材料在的面膜中的应用

本论文提出了一种新型的带有加热保温装置的面膜。该加热保温装置包含底座、上盖及加热装置,可以对面膜本体进行加热,在加热后能够保证面膜本体贴敷的舒适度,同时该面膜具备温控效果。     

一种移动式放射性废水远红外处理装置——张永康,沙沙,李文钰,等.CN104299667

<正>本发明公开了一种移动式放射性废水远红外处理装置,所述装置包括:运输车、保温舱、废水处理系统、自动控制装置、外部管路,所述保温舱设置在所述运输车上,所述废水处理系统、自动控制装置均设置在所述保温舱内,其中所述自     

电捕焦油器馈电箱、绝缘箱的保温装置

本实用新型涉及一种结构简单、节能保温的电捕焦油器馈电箱、绝缘箱的保温装置,该装置包括外保温层、保温夹套、进水管、出水管,在馈电箱或绝缘箱上设保温夹套,保温夹套外部设有外保温层;保温夹套连通进水管和出水管,其进水管接在电捕焦油器附近的焦炉集气管喷洒用循环氨水泵后管道上。     

PTA装置高压蒸汽管道保温设计及优化

通过对PTA装置9.5 MPa过热高压蒸汽SS95管道的保温厚度计算,选取同时满足工艺设计及管道保温设计要求的保温厚度。并讨论环境温度对高压蒸汽SS95放空管线的防烫保温设计的影响。     

催化裂化装置衬里冬季施工实践

分析了催化裂化装置衬里的受冻机理,同时对施工所用的衬里料作了受冻试验.通过合理选用衬里材料、采取可靠的保温措施、严格控制衬里养护期的环境温度、加强衬里施工的质量控制,催化裂化装置衬里冬季施工是完全可行的.     

高中化学实验创新设计—中和反应热的测定

针对中和反应热测定存在的不足提出了改良保温装置(用杜瓦瓶代替烧杯)、测量方法(用传感技术代替温度计)和数据处理方法(Origin软件作图法的使用)的实验方案,并通过实验分析了改进后的方案数据。证实了改进后的保温装置保温效果更好,实验测定值的误差在中学阶段做中和热测量实验的允许范围之内,更接近理论值。     

20万t/a PET装置真空系统的故障排查及处理

简单介绍了本装置三级真空喷射泵的工艺流程,对PET装置乙二醇蒸发器和三级喷射泵组成的真空系统出现故障的原因进行了分析、排查,通过加厚装置的保温系统和适当提高伴热系统的温度,避免了由于真空量不足造成的一次非计划停车的事故。     

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。