云南推广低浓度二氧化硫废气治理技术

云南亚太环境工程设计有限公司成功开发出低浓度二氧化硫废气治理技术，实现了“资源—产品—再生资源”的闭环物流循环，既节约了成本，又不对环境造成任何污染。云南是有色金属基地，工业二氧化硫烟气排放较为严重，全省年工业排放二氧化硫近40万t，对生态环境构成了极大的威胁和破坏。云南亚太环境工程设计有限公司研究开发的低浓度二氧化硫废气治理技术，采用氨—酸法原理及配套设备。     

卡博特（天津）公司签订SO2减排责任书

最近．卡博特化工（天津）公司和天津经济技术开发区管委会签订了“二氧化硫减排目标责任书”。该责任书规定，在2008年7月1日之前的过渡期内，企业可以采用新技术，开展节能减排技术改造．凡达到减排指标的企业可获得地方政府的财政补贴。“基准补贴”额为每生产一吨蒸气补贴5．28元。指标达到国家“新排放标准”（即二氧化硫排放浓度100mg／Nm^3）和“老排放标准”（即SO2排放浓度400mg／Nm^3）之间时，可享受基准补贴额的60％；     

把“环保”当作一项事业来做

与“十一五”相比,全国各大化工企业的环保工作规划指标增多了,压力加大了,潜力小了,要求提高了。约束性指标由化学需氧量和二氧化硫2项增加到了4项,增加了氨氮和氮氧化物,其中氨氮和氮氧化物排放总量分别比2010年减少10％,化学需氧量和二氧化硫排放总量分别比2010年减少8％。随着“十二五”期间工程减排潜力收窄,     

燃煤电厂发展将受控

在8月10日召开的2005中国电力论坛上，国家环保总局副局长张力军介绍说：“中国二氧化硫排放总量已居世界第一位，超出大气环境容量的80％以上；排放的二氧化硫和氮氧化物在高空转化为硫酸盐和硝酸盐等细颗粒物，酸雨区面积约占国土面积的1／3，造成二氧化硫高排放的直接原因是火电厂。”     

硫酸尾气超低排放治理

本文介绍了“臭氧脱硝+湿式电除雾”技术在硫浆制酸尾气超低排放治理中的应用。技术升级改造后,硫酸尾气中主要污染因子“颗粒物、二氧化硫、氮氧化物”的排放浓度,不仅满足GB16171-2012大气污染物特别排放限值要求;同时由于排放浓度大大低于指标要求,还减少了氮氧化物排放总量,为公司氮氧化物排放总量控制做出了贡献。     

工业污染源二氧化硫排放监测技术进展

二氧化硫是一种重要的大气污染物,目前已被列为我国污染物排放总量控制指标之一。二氧化硫的产生主要来自煤炭等化石燃料的燃烧,因此其排放源主要是工业企业中的各种燃烧设施,属于有组织排放。有效的监控和治理二氧化硫排放依赖于准确可靠的排放监测技术。主要介绍了目前常见的工业污染源二氧化硫排放监测技术,并提出了该领域未来的发展趋势。     

二氧化硫排放法规

自20世纪70年代二氧化硫被确定为严重的环境污染物以来,世界各国就开始逐步立法,以减少二氧化硫的排放。介绍了欧洲、美国、加拿大、中国、印度等二氧化硫排放法规的立法历程及现状,重点讨论了各国燃煤电厂的二氧化硫排放限值。     

环保总局和天津市签订目标责任书

2006年8月国家环保总局与天津市政府签订二氧化赢和化学需氧基排放总量削减目标责任书。天津市将在“十一五”期末，实现二氧化硫和化学需氧量排放总量削减10％的目标。     

中国火电厂SO_2污染控制法规及标准

1995年 8月 ,全国人大常委会第一次修订《大气污染防治法》 ,提出划定“两控区”的要求 ,并要求“两控区”内的新建火电厂不能用低硫煤的 ,必须配套脱硫装置或采取其他控制措施 ,已建火电厂不用低硫煤的也应当采取控制二氧化硫排放的措施。　　 1996年修订的《火电厂大气污染物排放标准》第一次提出二氧化硫排放浓度限值。　　 1998年 1月 ,《国务院关于酸雨控制区和二氧化硫污染控制区有关问题的批复》中要求 ,(1)除以热定电的热电厂外 ,禁止在大中城市城区及近效区新建燃煤火电厂 ;(2 )新建、改造燃煤含硫量大于 1%的电厂 ,必须建设脱硫设…     

新标准下硫磺回收装置SO_2排放改造思路

2015年4月16日国家环保部发布了新的《石油炼制工业污染物排放标准(GB 31570-2015)》新标准,文章讨论了新标准下惠州炼化硫磺回收装置尾气中二氧化硫的排放来源及影响排放浓度的各种因素,针对硫磺回收装置目前二氧化硫排放现状,提出了硫磺回收优化设计以降低二氧化硫排放浓度达到国家制定的新标准。     

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。