Φ3m×11m水泥挤压联合粉磨系统的调试与生产

１系统简介我公司采用２台Φ３．０m×１１m和１台Φ２．４m×８m闭路水泥粉磨生产线。２００１年，公司将２条６００t／d预热器窑改造为１１００t／d预分解窑后，原水泥粉磨系统生产能力明显不足。为此，新增１条Φ３m×１１m挤压联合粉磨水泥生产线。工艺流程见图１。系统主要设备配置见表１。图１水泥挤压联合粉磨系统工艺流程示意表１水泥粉磨系统主要设备配置设备名称规格型号备注胶带输送机B６５０×１１．５m１３０t／h，１０kW交叉带式除铁器MC１２－８０９０L冷态消耗功率：２．６kW稳流称重仓２５００mm×２５００mm２２m３辊…     

固定化细胞生产L－苹果酸新工艺及动力学研究

对产氨短杆菌ＭＡ－２固定化细胞在富马酸铵体系中转化生成Ｌ－苹果酸的优化工艺条件做了探讨，结果表明，富马酸铵浓度为１．８ｍｏｌ／Ｌ，ｐＨ７．０～８．０，反应温度为３７℃时，Ｌ－苹果酸得率达２００ｇ／Ｌ左右。同时，对固定化细胞的动力学进行了研究，结果为：ｒ（ｍａｘ）＝５８ｍｍｏｌ／（Ｌ·ｈ·ｇ固定化湿细胞）），Ｋｍ＝６．２５×１Ｏ￣（－２）ｍｏｌ／Ｌ，Ｐ＿ｍ＝１．５６ｍｏｌ／Ｌ     

预分解窑改燃无烟煤的调试（一）

１概述我厂＃３窑是经改造的预分解窑系统,设计生产能力１３２０ｔ／ｄ,实际能力可达１４５０ｔ／ｄ。其窑尾四级预热器规格分别为：Ｃ１：２－３７００Ｃ２～Ｃ４５４５０ｍｍ。分解炉属离线型喷腾管道式分解炉,规格３８４０ｍｍ×１９９４０ｍｍ。出Ｃ１筒３６０℃±１０℃的废气全部入增湿塔处理至１３０℃±１０℃后入电除尘器除尘。增湿塔规格７０００ｍｍ×２６０００ｍｍ,处理风量２７００００ｍ３／ｈ,１３把喷枪,喷水量１４．５ｔ／ｈ～１５ｔ／ｈ。窑尾高温风机型号Ｗ６－２×３９№１８,风量２７００００ｍ３／ｈ,压力７…     

Φ2.2m×6.5m水泥粉磨系统的改造

王岘水泥厂是３００t／d熟料的水泥厂，水泥粉磨系统由Φ２．２m×６．５m球磨机及Φ３．５m离心式选粉机组成。多年来，水泥磨产量一直未达到设计能力，始终在１１．０t／h左右。加之该厂已于１９９９年７月完成了Φ２．８m／２．５m×４２m五级旋风预热器回转窑的改造，窑产量从原来的７～９t／h提高到现在年平均１０．５t／h。此时水泥磨的产量更显不足，该厂于２０００年１１月委托我院对粉磨系统进行改造设计。１改造方案１．１降低入磨物料粒度该厂水泥熟料冷却使用Φ２．２m×２４．０m单筒冷却机。冷却效果不好，温度在１８０℃以上…     

CDPK30/3电除尘器故障原因及处理方法

１存在的问题某厂Φ２．８m／２．５m×４４mNH型五级旋风预热器窑，其窑尾采用的是CDPK３０／３卧式电除尘器。该窑于１９９４年１０月投产，运行到１９９６年１月，电除尘器一电场就无法启动；１９９６年４月，二、三电场工作电压开始明显降低、工作电流下降且不稳定（见表１）。在窑运行正常工况下检测排入大气的废气含尘量标况下为２６５mg／m３。１９９６年８月份因环境污染严重而被迫停窑。表１高压电源工作情况各运行阶段一电场二电场三电场配用的高压电源３００mA／６０kV３００mA／７２kV３００mA／１００kV窑投产运行时２８…     

Φ2．8m×28m单筒冷却机的改造

Φ２．８ｍ×２８ｍ单筒冷却机的改造李喜全，胡留志哈尔滨铁路工业处绥化水泥厂（１５２０７３）我厂２号窑为Φ２．５ｍ×４０ｍ五级预热器窑外分解窑，１９８４年１０月２４日一次点火投料试产成功，１９８５年１２月通过国家验收。该窑配用Φ２．８ｍ×２８ｍ单筒冷却...     

立窑与回转窑熟料混合粉磨提高水泥质量的探讨

立窑与回转窑熟料混合粉磨提高水泥质量的探讨潘永礼辽宁省铧子新生水泥厂（１１１３１２）我厂于１９５７年建厂，有机械化立窑３台：Φ２．５×１０ｍ、Φ２×８ｍ、Φ２×７．８ｍ；生料磨２台：２×Φ２．２×６．５ｍ；水泥磨４台：３×Φ１．８３×６．１２ｍ３台，...     

煤粉燃烧室改烧混合煤的技术措施

我厂窑外分解窑和立波尔窑采用烟煤与无烟煤比例为３０％∶７０％的混合煤，这种煤的挥发分为８％～１２％、灰分为２０％～２４％、细度为２％～５％、水分＜３．５％、着火温度约６００℃。３台Φ３．５m×１０m中卸烘干生料磨配套的３个煤粉燃烧室仍然只能烧烟煤，每天２号煤磨（Φ２．２m×４．４m）要为此专门开机４h左右。如果燃烧室也烧混合煤，既可以节省每吨烟煤与无烟煤近９０元的差价，也可以停开２号煤磨。燃烧室所用煤计划与立波尔窑所用混合煤一样，由１号风扫煤磨（Φ２．８m×８m）磨制。本着尽可能节省投资的原则，我们采…     

改善RSP炉燃料燃烧状况提高窑的生产能力

改善ＲＳＰ炉燃料燃烧状况提高窑的生产能力姜烈刚黑龙江省牡丹江水泥厂（１５７０４１）我厂２０００ｔ／ｄ预分解窑系统设计配用类ＲＳＰ型分解炉，规格为：ＳＣ：Φ３．６ｍ×４．８ｍ，ＭＣ：Φ４．６ｍ×１１．７ｍ，连接管道为３．２５ｍ×２．０５ｍ，总有效容积：...     

新发光试剂N-(β-羧基丙酰基)异鲁米诺的合成及性能的研究

合成了新发光试剂Ｎ－（β－羧基丙酰基）异鲁米诺（ＣＰＩＬ），并对其化学发光性能进行了研究。ＣＰＩＬ在ＮａＨＣＯ３－ＮａＯＨ介质中与Ｈ２Ｏ２反应，线性范围为２×１０－１０～１×１０－８ｍｏｌ／ＬＣＰＩＬ，检测限为１×１０－１０ｍｏｌ／Ｌ，测定１×１０－９ｍｏｌ／Ｌ　ＣＰＩＬ溶液，相对标准偏差为６．４％。Ｃｏ２＋对ＣＰＩＬ的化学发光反应具有催化增强作用（增强１０倍），当体系中加入一定量的Ｃｏ２＋溶液时，ＣＰＩＬ的浓度在４×１０－１１～１×１０－９ｍｏｌ／Ｌ从范围内具有良好的线性关系，检测限为８×１０－１２ｍｏｌ／Ｌ，灵敏度高于文献报道的ＡＢＥＩ－Ｃｏ２－ＮａＣＩＯ发光体系。     

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。