专利产品 国际首创 国内领先

●ＪＴＬ－１（夹心饼）、ＪＴＬ－４、ＪＴＬ－５常温精脱硫新工艺（总硫＜０１ｐｐｍ）,单塔甲醇催化剂寿命已从２～４个月延长到２年以上（山东郯城、云南滇中等化肥厂）,取得重大突破！氨合成催化剂寿命可延长到３年（高硫煤）与５～８年（低硫煤）●Ｔ５０４（原ＥＨ－１Ｑ）有机硫水解催化剂　国内最先工业应用●Ｔ１０１、Ｔ１０２（原ＥＡＣ－２）活性炭精脱硫剂　出口Ｈ２Ｓ、ＣＯＳ、ＣＳ２、ＳＯ２均＜００３ｐｐｍ●ＥＡＣ－２活性炭精脱硫剂　近年来小氮肥中上了新台阶的技术●ＥＡＣ－３食品级ＣＯ２专用精脱硫剂●ＥＡ…     

常温精脱硫工艺的新进展及其应用

本文叙述了由Ｔ５０４水解催化剂下串Ｔ１０１精脱硫剂（特种活性炭）与由ＥＺＸ多功能脱硫剂单独组成的常温精脱硫新工艺，新工艺可将气体中的总硫（ＣＯＳ＋Ｈ２Ｓ）脱除至〈０．０６ｐｐｍ，它们已在保护甲醇，甲烷化，氨合成催化剂，贵金属催化剂，特种吸附剂与食品ＣＯ２气体中等５０多家中，小化肥厂使用，取得了显著的效果。     

HC—2微量硫分析仪的应用小结

ＨＣ－Ｃ微量硫分析仪对各种形态硫（Ｈ２Ｓ,ＣＯＳ,ＣＳ２,ＲＳＨ,ＲＳＳＲ,ＳＯ２等硫化物）能作定性和定量的检测。其灵敏度高,快速简便,易于操作。在化肥行业中通过对微量硫的分析,可以搞清联醇催化剂,氨合成催化剂中毒的原因,并选择合适的常温精脱硫新工艺,及时掌握精脱硫运行情况和预测精脱硫剂的使用时间等,以达到合理更换脱硫剂的目的。     

改性活性炭低温脱除COS的实验研究

模拟３０１８脱硫剂常温脱出Ｈ２Ｓ的一些基本条件,探讨了３０１８脱硫剂脱出ＣＯＳ的情况。结果表明在常温条件下脱ＣＯＳ的反应速率很慢,在温度为８０℃左右时显示了较好的脱出ＣＯＳ的性能,为今后优化组合工艺的开发,实现３０１８脱硫剂同时脱出Ｈ２Ｓ和ＣＯＳ提供了理论基础。     

高浓度CO2气体的干法脱硫

目前国内用于高浓度ＣＯ２气体脱硫的方法很多,一般根据ＣＯ２的来源、杂质成分、处理量、Ｈ２Ｓ含量及使用要求进行选择。从经济方面考虑,当ＣＯ２气体中Ｈ２Ｓ浓度较高时,一般采用湿法脱硫,当气体中的Ｈ２Ｓ浓度较低时,一般采用干法脱硫。干法脱硫剂的种类根据其脱硫的精度分为普通脱硫剂和精脱硫剂,工业上较多使用的有高纯度氧化锌脱硫剂、氧化锌＋氧化锰脱硫剂、活性氧化铁脱硫剂、活性炭脱硫剂、浸渍型高精度活性炭脱硫剂。根据鲁南化肥厂第一氮肥厂尿素车间ＣＯ２原料气脱硫所使用的几种固体脱硫剂的情况,对高浓度ＣＯ２气体干…     

常温精脱硫新工艺生产试验总结

介绍了北京化工实验厂开发的常温精脱硫新工艺，及在该厂常压变换系统联醇装置中对此工艺进行的生产试验考核情况（采用Ｔ５０４型ＣＯＳ水解催化剂和ＱＴＳ－０１型ＺｎＯ脱硫剂）。结果表明，净化气中ＣＯＳ和Ｈ２Ｓ含量均达到精脱硫要求，联醇催化剂使用寿命延长，能耗低，操作简便，运行稳定。建议该成果在联醇生产及其它行业推广。     

EF—2型犍囊氧化铁常温精脱硫剂在天然气中的应用

介绍了ＥＦ－２型特种氧化铁常温精脱硫剂及精脱Ｈ２Ｓ工艺对大港油田天然气精脱Ｈ２Ｓ的情况。应用结果说明,在无氧条件下,精脱Ｈ２Ｓ效果优良,消除了Ｈ２Ｓ对设备的腐蚀,液化气回收装置的检修期由每周一次延长至一年以上。经济效益高达１、０００多万元。     

尾部烟气增湿活化脱硫原理性研究

论述应用大速差射流的尾部烟气脱硫增湿活化原理怀试验台架及其系统，试验结果及分析，在尾部烟气中ＳＯ２气体直接与固相脱硫剂（ＣａＯ粉及Ｃａ（ＯＨ）２粉）反应能力很弱；ＳＯ２气体直接与水滴反应生成Ｈ２ＳＯ３的能力也能弱，它受到ＳＯ２气体在水中溶解能力的限制；增湿活化的机理在于水滴与脱硫剂粒子碰撞后在其表面生在液态Ｃａ（ＯＨ）２离子膜，由它与ＳＯ２气体反应脱硫。因此，良好的活化反应器必须具有良好的水滴与脱     

EZX多功能转化吸收型精脱硫剂、JTL-4、JTL-5常温精脱硫新工艺通过鉴定

湖北省化学研究所气体净化中心近年来研究、开发的ＥＺＸ多功能转化吸收型精脱硫剂、ＪＴＬ4、ＪＴＬ5常温精脱硫新工艺和ＥＦ2型氧化铁精脱硫剂于2000年9月26～27日通过国家石油和化学工业局科技办和湖北省科学技术厅联合主持的专家鉴定。ＥＺＸ多功能转化吸收型精脱硫剂解决了ＣＯＳ水解催化剂不能在露点下操作和常温下不能精脱ＣＳ2这两大技术难点,实现了在常温下对ＣＯＳ、ＣＳ2的转化与吸收,并进行了广泛的工业应用,该精脱硫剂属国际首创。由“Ｔ102串ＥＺＸ精脱硫剂”组成的ＪＴＬ4常温精脱硫新工艺实现了常温下的精脱硫,并能同时脱除…     

常温精脱硫工艺的新进展及其应用

主要介绍了该所开发成功的Ｔ５０４ＣＯＳ水解－Ｔ１０１活性炭常温精脱硫新工艺ＪＴＬ－１及在此基础上改进的几种工艺。ＪＴＬ－１新工艺已在３０多家厂推广应用，本文中以具体事例简介了其应用情况。     

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.     

Novel polyurethane coating technology through glycidyl carbamate chemistry

Glycidyl carbamate chemistry combines the excellent properties of polyurethanes with the crosslinking chemistry of epoxy resins. Glycidyl carbamate functional oligomers were synthesized by the reaction of polyfunctional isocyanate oligomers and glycidol. The oligomers were formulated into coatings with several amine functional crosslinkers at varying stoichiometric ratios and cured at different temperatures. Properties such as solvent resistance, hardness, and impact resistance were dependent on the composition and cure conditions. Most coatings had an excellent combination of properties. Studies were carried out to determine the kinetics of the curing reaction of the glycidyl carbamate functional oligomers with multifunctional and model amines. Detailed kinetic analysis of the curing reactions was also undertaken. The results indicated that the glycidyl carbamate functional group is more reactive than a glycidyl ether group. Presented at the 82nd Annual Meeting of the Federation of Societies for Coatings Technology, on October 27–29, 2004, in Chicago, IL.     

Highly moisture-proof polysilsesquioxane coating prepared via facile sol-gel process

A highly moisture-proof polysilsesquioxane coating was obtained from a new bis-silylated precursor, which was synthesized from 3-aminopropyltriethoxysilane (APTES) and m-xylylene diisocyanate (m-XDI) in tetrahydrofuran (THF) and verified by ¹H MAS NMR. For direct comparison purposes, an SiO₂ coating was also prepared by the Stöber method using tetraethoxysilane (TEOS) as the reactant. Interestingly, the coating obtained from the polysilsesquioxane sol exhibited a much higher moisture resistance capability than its counterpart, which was attributed to its more compact feature between nanoparticles as characterized by N₂ absorption experiment and transmission electron microscopy (TEM). Furthermore, its high transparency of about 92% showed potential for application in the protection of optical crystals.     

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.