电去离子软水技术的原理与应用前景

发明了电去离子(EDI)软水技术。EDI软水装置具有:连续产水;深度除硬;无人值守;不用再生药剂的特点。EDI软水装置将作为更新换代的制备软化水的高新技术产品,在制备工业锅炉补给水、冷却水、其它工业用水等领域内得到推广使用。     

服务窗

●技术转让钠离子树脂再生剂该产品替代氯化钠用于软水处理阳离子交换树脂再生 ,改变了氯化钠再生剂的单一组分 ,采用几种钠盐按一定比例配合 ,并加入低剂量的助剂在相同的条件下 ,提高交换剂的工作交换当量 ,与用氯化钠比较 ,用量减少 10 %～ 2 0 % ,并可延长树脂的使用寿命。该剂经机械成型 ,经过盐溶器后 ,溶解曲线与再生液浓度曲线趋近 ,避免再生液浓度偏高造成的浪费 ,特别适用于盐溶器和全自动再生软水设备。高性能金属 陶瓷复合涂层异型制品该项成果主要用于冶金、电力工业上的变径管、加湿机叶片、耐磨碟阀等异形制品以及其他耐磨…     

Na型软水的危害与改造

1Na型软水的危害小氮肥厂水处理再生刑一直使用NaCl，Na型软水即用NaCl作软化剂制得的软水。若使用的原水暂时硬度高于永久硬度，则制成的软水变成了碱性软水，即把原水的硬度转化成了碱度：若使用原水永久硬度高于暂时硬度，则制成的软水为含盐软水，即把原水硬度转化成可溶性盐：中原地区小氮肥厂生产用水大都为井水，60m以内深井水硬度和碱度相当，或硬度略低于碱度，数值大约在10mmol／l。400m以内深井水硬度在2mmol／l左右，而碱度约为7～8mmol／l。经上述方法制得的软水实际为高碱度软水。此高碱度软水进入锅炉及生产系统，都会对…     

磺化煤再生用盐水的有限循环使用

建昌县化肥厂自七一年投产以来,一直沿用磺化煤软化水,磺化煤再生用盐量很大,生产一吨软水,平均耗盐约1.5公斤以上。但是理论计算表明,在该厂水质条件下,生产一吨软水,其理论耗盐量为0.14公斤(NaCl)。实际单耗与理论单耗竟差十倍之多。为了解决这个问题,在厂党总支的积极领导和支持下,该厂广大工人、干部和技术人员群策群力,提出了磺化煤再生用盐水的有限循环使用建议,自今年四月初实施这项建议以来,通过几个月来的生产实践,证明节盐效果显著。生产一吨软水平均耗盐0.8公斤左右,较过去单耗降低了50％左右。而且软水硬度均在0.05毫克当量/升以下,磺化煤再生速度没有下降,既     

一套新的水处理装置在我公司的应用

利用浅除盐水技术,新建一套可以同时生产浅除盐水,软水,除盐水的水处理装置,既扩大了水处理的生产能力,又降低了再生剂消耗。     

空压装置仪表风露点偏高原因分析及对策

压缩空气主要作为企业仪表用风及工艺风。石家庄炼化分公司空压装置生产压缩空气冬季存在露点较高问题,压缩空气露点过高直接影响各装置安全运行。通过对空压装置仪表风露点偏高原因进行分析,提出有效解决措施。     

4万t/a国产化离子膜电解槽运行总结

简述了国产化离子膜电解生产装置的建设进程和一次盐水、二次盐水、电解、脱氯、整流各工序及仪表和DCS系统的生产情况，以及72h试车性能考核、装置实际运行等生产运行过程。提出了该装置运行初期存在的过滤盐水中SS含量超标致使过滤器运行周期短，塔再生反洗时树脂展开不彻底导致树脂流失严重以及氯气总管周期性的正压波动、压缩空气夹带铁锈、吸收废氯含水量大等问题和装置正常运行时发现的膜起泡、电解槽阳极网焊点开焊、外线电网波动造成整流系统频繁跳闸等问题，并介绍了与其相应的更新碳素管、修改树脂再生程序、重装氯气平衡管、采用二段冷却使废氯温度由50℃降至20℃、减少开停车次数等解决办法。     

余热再生技术的研究与应用

通过对余热再生与其他同类干燥技术进行分析比较，利用余热再生技术对压缩空气干燥装置进行改造应用，降低了生产成本，取得了良好的经济效益。     

VCM聚合反应用软水脱氧技术的应用

介绍了常用的软水脱氧方法并进行了比较。采用真空脱氧方法处理VCM聚合用软水后,软水中含氧质量浓度可控制在1.0mg/L以下,采用脱氧软水生产的PVC树脂的白度、"鱼眼"数和颗粒性能均明显提高。     

基于金属盐溶液的纤维素溶解及其应用研究进展

纤维素是自然界储量最丰富的可再生生物质资源，其绿色高值化利用在实现“双碳”和“循环经济”目标中起到重要作用。纤维素的绿色高效溶解是实现其高值化利用重要途径之一。众多纤维素溶剂体系存在价格昂贵、毒性和环境威胁、溶解工艺复杂、溶解效率低、溶剂回收困难和能耗高等问题。金属盐溶液体系具有稳定性高、价格便宜，同时溶解纤维素速度快、溶解工艺简单等特点，是更具应用前景的低成本绿色溶剂。该文综述了不同金属盐溶液溶解纤维素的溶解机理，总结了影响溶解性能的关键因素，并进一步介绍了基于不同金属盐溶液溶解纤维素在薄膜材料、凝胶材料以及复合材料等领域的应用研究进展，总结并展望了金属盐溶液在纤维素溶解及功能化应用方面的优势、不足及发展方向。     

Sapindaceae,cyanolipids, and bugs

Scentless plant bugs (Heteroptera: Rhopalidae) are so named because adults of the Serinethinae have vestigial metathoracic scent glands. Serinethines are seed predators of Sapindales, especially Sapindaceae that produce toxic cyanolipids. In two serinethine species whose ranges extend into the southern United States,Jadera haematoloma andJ. sanguinolenta, sequestration of host cyanolipids as glucosides renders these gregarious, aposematic insects unpalatable to a variety of predators. The blood glucoside profile and cyanogenesis ofJadera varies depending on the cyanolipid chemistry of hosts, and adults and larvae fed golden rain tree seeds (Koelreuteria paniculata) excrete the volatile lactone, 4-methyl-2(5H)-furanone, to which they are attracted.Jadera fed balloon vine seeds (Cardiospermum spp.) do not excrete the attractive lactone. Loss of the usual heteropteran defensive glands in serinethines may have coevolved with host specificity on toxic plants, and the orientation ofJadera to a volatile excretory product could be an adaptive response to save time.Mention of a commercial product does not consititute an endorsement by the USDA.     

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.     

2008～2009年世界塑料工业进展

收集了2008年7月～2009年6月世界塑料工业的相关资料,介绍了2008～2009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、环氧树脂、不饱和聚酯树脂)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。     

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.