新型过滤、洗涤、干燥“三合一”设备的开发

开发了一种新型"三合一"设备,该设备集过滤、洗涤和干燥功能于一体,其特殊的磁力传动密封结构,最大限度地保证了过滤过程的密封性;洗涤过程中,可进行化浆洗涤和置换洗涤,洗涤效果好;干燥过程中,有效换热面积大,搅拌强度可调,且可在真空条件下进行操作,干燥效率高、操作周期短,特别适合应用于医药、精细化工及有机化工等行业中涉及有毒、有害、易燃、易挥物质的分离过程。     

草甘膦反应过滤一体机的设计

针对草甘膦合成反应和过滤两个主要工艺过程连续生产的需要,开发了一种集搅拌混合、反应、过滤、滤饼吹干、洗涤、鼓泡输送（排滤饼）等步骤一次性在一个密闭空间内完成的设备。提出了该设备的关键实现技术,包括设计技术指标、设备结构设计、工作流程设计、主要技术特征、技术经济指标。该设备具有操作简单、生产效率高、过滤精度高、自动化程度高及环境污染少等特点。     

上海迅昌化工装备技术研究所

<正>各种高效反应、蒸发、结晶、萃取、过滤、洗涤、干燥多功能一体机WFGG-卧式反应过滤干燥多功能机全密闭操作,反应、萃取、蒸发、浓缩、结晶、过滤、洗涤、干燥、混合在一台机内完成。LFGG-筒锥式过滤洗涤干燥机全密闭操作,内加热螺旋搅拌,可在一台机内完成反应萃取过滤洗涤干燥混合等多种操作,成品自动推出。PFD-平板式过滤洗涤干燥机液压升降,平板过滤,特殊搅拌结构,可在一台机内完成过滤、洗涤、干燥、混合、自动出料等多种全密闭操作,一机多用。     

上海迅昌化工装备技术研究所

正WFGG-卧式反应过滤干燥多功能机全密闭操作,反应、萃取、蒸发、浓缩、结晶、过滤、洗涤、干燥、混合在一台机内完成。LFGG-筒锥式过滤洗涤干燥机全密闭操作,内加热螺旋搅拌,可在一台机内完成反应萃取过滤洗涤干燥混合等多种操作,成品自动推出。PFD-平板式过滤洗涤干燥机液压升降,平板过滤,特殊搅拌结构,可在一台机内完成过滤、洗涤、干燥、混合、自动出料等多种全密闭操作,一机多用。     

上海迅昌化工装备技术研究所

<正>WFGG-卧式反应过滤干燥多功能机全密闭操作,反应、萃取、蒸发、浓缩、结晶、过滤、洗涤、干燥、混合在一台机内完成。LFGG-筒锥式过滤洗涤干燥机全密闭操作,内加热螺旋搅拌,可在一台机内完成反应萃取过滤洗涤干燥混合等多种操作,成品自动推出。PFD-平板式过滤洗涤干燥机液压升降,平板过滤,特殊搅拌结构,可在一台机内完成过滤、洗涤、干燥、混合、自动出料等多种全密闭操作,一机多用。     

多功能化工设备的结构设计

本文旨存介绍一种新型的多功能化工设备,该设备集中了静止、搅拌、旋转设备的某些特点,具有过滤、洗涤,干燥、冷却等四种功能。可将若干个化工工艺过程在一台设备内完成,而且操作方便,结构又不太复杂,是一种理想的化工设备。     

酶解液过滤过程的强化及新型水平带式真空过滤机的应用

以生物保健品生产过程中难过滤的酶解液为研究对象,考察了该酶解液的物料特性和过滤特性.对该物料进行了过滤过程的强化研究,筛选了合适的助滤剂,探讨了助滤剂添加量、助滤剂使用方法、操作压力对实际分离过程的影响,确定了酶解液的分离工艺,还结合强化过滤过程研究,研发了一种新型水平带式真空过滤机并将其应用于生产实际,解决了生产中的...     

影响顺酐装置离心机分离效果的因素分析

阐述了阿法拉伐CHPX-517离心机的分离原理和溶剂邻苯二甲酸二丁酯(DBP)的洗涤流程,说明了溶剂洗涤在整个吸收工艺中的重要性。分析了混合罐的混合温度、搅拌速度、剂水比和停留时间4个因素对离心机分离效果的影响,实验结果表明:混合温度62℃、搅拌速度34r/min、剂水比2:1、停留时间100min时离心机分离效果最佳。     

过滤洗涤干燥一体机在危化学品生产中的应用

在现代的危险化学品生产中,过滤洗涤干燥一体机应用十分广泛。过滤洗涤干燥一体机能够实现全过程封闭连续操作,在很大程度上提升危险化学品生产的安全性。但是在实际的操作和应用过程中也有着较多值得引起注意的地方,主要对过滤洗涤干燥一体机在危险化学品生产中的应用展开探讨。     

滤饼的洗涤

<正> 滤并净化度要求的高低对分离设备投资费用和操作费用的影响极大,因此对洗涤过程的精心研究就显得非常重要了。对于穿流洗涤,人们可将此分为渗滤、洗涤、中间洗涤和扩散洗涤。为了降低洗涤液的用量,可以在设备中设置对流洗涤过程,如对净化度有很高要求时也可设置多级再次搅拌滤饼装     

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.     

Many Drugs of Abuse May Be Acutely Transformed to Dopamine,Norepinephrine and Epinephrine In Vivo

It is well established that a wide range of drugs of abuse acutely boost the signaling of the sympathetic nervous system and the hypothalamic–pituitary–adrenal (HPA) axis, where norepinephrine and epinephrine are major output molecules. This stimulatory effect is accompanied by such symptoms as elevated heart rate and blood pressure, more rapid breathing, increased body temperature and sweating, and pupillary dilation, as well as the intoxicating or euphoric subjective properties of the drug. While many drugs of abuse are thought to achieve their intoxicating effects by modulating the monoaminergic neurotransmitter systems (i.e., serotonin, norepinephrine, dopamine) by binding to these receptors or otherwise affecting their synaptic signaling, this paper puts forth the hypothesis that many of these drugs are actually acutely converted to catecholamines (dopamine, norepinephrine, epinephrine) in vivo, in addition to transformation to their known metabolites. In this manner, a range of stimulants, opioids, and psychedelics (as well as alcohol) may partially achieve their intoxicating properties, as well as side effects, due to this putative transformation to catecholamines. If this hypothesis is correct, it would alter our understanding of the basic biosynthetic pathways for generating these important signaling molecules, while also modifying our view of the neural substrates underlying substance abuse and dependence, including psychological stress-induced relapse. Importantly, there is a direct way to test the overarching hypothesis: administer (either centrally or peripherally) stable isotope versions of these drugs to model organisms such as rodents (or even to humans) and then use liquid chromatography-mass spectrometry to determine if the labeled drug is converted to labeled catecholamines in brain, blood plasma, or urine samples.     

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。     

Inorganic/organic nanocomposite coatings: The next step in coating performance

Inorganic/organic hybrid materials have considerable promise and are beginning to become a major area of research for many coating usages, including abrasion and corrosion resistance. Our primary approach is to prepare the inorganic phase in situ within the film formation process of the organic phase. The inorganic phase is introduced via sol-gel chemistry into a thermosetting organic phase. By this method, the size, periodicity, spatial positioning, and density of the inorganic phase can be controlled. An important aspect of the inorganic/organic hybrid materials is the coupling agent. The initial task of the coupling agent is to provide uniform mixing of the oligomeric organic phase with the sol-gel precursors, which are otherwise immiscible. UV-curable inorganic/organic hybrid systems have the advantages of a rapid cure and the ability to be used on heat sensitive substrates such as molded plastics. Also, it is possible to have better control of the growth of the inorganic phase using UV curing. It is our ultimate goal to completely separate the curing of inorganic and organic phases to gain complete control over the morphology, and hence optimization of “all” the coating properties. Thus far, it has been found that concomitant UV curing of the inorganic and organic phases using titanium sol-gel precursors afforded nanocomposite coatings which completely block the substrate from UV light while maintaining a transparent to visible light. Also, it has been found that the morphology of the inorganic phase is highly dependent on the concentration and reactivity of the coupling agent. Presented at the 82nd Annual Meeting of the Federation of Societies for Coatings Technology, October 27–29, 2004, in Chicago, IL.