LNZL水泥厂2500t/d生产线的热工检测与分析

对LNZL水泥厂2500 t/d生产线进行热工标定并分析,该厂熟料产量超过设计产量28.96％,达到3224.1t/d.系统烧成热耗为3302.6kJ/kg熟料,低于全国平均水平,一级筒出口温度为334℃,稍有些偏高;系统的分离效率为91.49％,出预热器飞灰量偏高,还有明显的改善空间.篦式冷却机效果欠佳,直接影响了熟料质量和余热发电量,热回收效率也偏低.该生产线系统还有比较大的潜力,如经过改进和优化,熟料产能还有可能进一步提高,热耗及电耗均可明显下降.     

2 500 t/d新型干法水泥生产线热工标定与分析

对AXNW水泥厂2500t/d生产线进行热工标定并分析,该厂熟料产量平均在2850t/d,超过设计产量的14%。系统烧成热耗3308.69k J/kg,高于全国平均水平。C1筒出口温度为290℃,处于国内先进水平,其氧含量达到4.9%,偏高。篦冷机冷却效果欠佳,风室存在风短路现象,直接影响了熟料质量和余热发电量,热回收效率偏低。该烧成系统还有较大的提升潜力,如果通过改进和优化,精细化管理和操作,熟料产能还可以得到进一步的提高,热耗及电耗可明显下降。     

2500d/t熟料生产线节能降耗改造实例

某2500t/d熟料生产线预热器出口温度偏高,熟料热耗居高不下,因此对该线预热器系统采取分解炉扩容,取消离线炉等措施进行改造,改造后可以使用100%无烟煤进行煅烧。     

2500d/t熟料生产线节能降耗改造实例

某2500t/d熟料生产线预热器出口温度偏高，熟料热耗居高不下，因此对该线预热器系统采取分解炉扩容，取消离线炉等措施进行改造，改造后可以使用100%无烟煤进行煅烧。     

以褐煤为炉用燃料的3 200 t/d预分解窑 系统热工分析

为了分析云南尖峰水泥有限公司3200t/d水泥熟料生产线目前的实际生产状况,总结生产经验,进一步降低预热器系统阻力,公司对该生产线烧成系统进行了一次全面的热工检测。检测结果看,该生产线熟料产量超过设计指标41%,单位熟料烧成热耗指标较好。但预热器系统阻力、出篦冷机熟料温度偏高。     

5000t/d生产线热工标定与降耗方向分析

FK水泥有限公司5　000t/d生产线采用五级双列旋风预热器系统、NST-I型分解炉和推动篦式冷却机,回转窑规格为Φ4.8m×74m。该线自2011年4月投产以来,热工制度较为稳定,但存在熟料烧成热耗和电耗偏高等问题。为了把握实际生产运行状况,找到热耗偏高的原因,更进一步降低烧成系统的热耗,我校与FK水泥有限公司于2015年8月共同对该生产线进行了综合热工标定检测。     

5000t/d预分解短窑100%无烟煤煅烧ASTMⅡ/Ⅴ型熟料的生产调试

我公司5 000t/d生产线扩建工程是由中材国际南京水泥工业设计研究院总承包按交钥匙方式进行的.2004年11月29日投料试生产,2005年1月7～10日进行熟料烧成系统的性能考核,系统实现连续72h满负荷运行,3d共生产熟料16 773t,熟料产量5 591t/d,烧成系统电耗22.0kWh/t,热耗3 081kJ/kg,fCaO为0.79%.出冷却机的熟料平均温度为53.5℃.各项技术指标达到合同要求.     

铜陵海螺5 000t/d熟料生产线工艺系统设计

工艺设计的优化与质量直接影响工程投资，系统产质量和生产经营成本。铜陵海螺5000t/d熟料生产线的工艺流程设计合理，流畅，并能与原#1窑生产线充分配合协调；而且该工程设备国产化率达96%，实现了我国5000t/d熟料级生产线技术装备国产化的重大突破。现场标定数据表明，烧成系统熟料产量5615t/d，熟料平均热耗709x4.18kJ/kg，熟料电耗54.5kWh，达到了世界一流水平。     

1000t/d白水泥熟料生产线的设计特点

绵竹白川特种水泥有限公司1　000t/d白水泥熟料生产线项目是四川卡森科技有限公司设计的。该生产线主要保证指标为：熟料产量800t/d（最大1 000 t/d）,单位熟料热耗5　016kJ/kg,熟料3d抗压强度≥38MPa,28d抗压强度≥57MPa,熟料白度≥85度。     

3200t/d G级高抗硫酸盐型油井水泥熟料生产线设计

作者以某3200t/d油井水泥熟料生产线技术改造项目设计为例,介绍了油井水泥熟料生产线的特点,提出了油井水泥熟料的配料方案、设计计算、设备选型及计算,该项目采用了五级旋风预热器+在线型分解炉+回转窑+第四代篦式冷却机的油井水泥熟料生产工艺。经实际运行验证,系统产量已达到3500t/d,热耗小于3125kJ/kg.cl,熟料综合电耗小于63kWh/t.cl。     

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。