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1.
本文是在10kg/h固体热载体干馏实验装置上用扎赉诺尔褐煤制取高炉喷吹料和中热值煤气的研究结果。在干馏温度450℃~650℃范围制得煤气110Nm^3/t~400Nm^3/t,煤气热值为14.7MJ/Nm^3~17.5MJ/Nm^3,属中热值煤气,可供民用,也可用于补充钢铁企业燃气不足,平衡能源,得低温焦油2%~9%,可加工成化工产品和燃料油,半焦可用于高炉喷吹。  相似文献   

2.
以不粘煤为原料,在运行的Φ3.3m水煤气型两段炉上进行了工业试验,论述了试验过程,原料煤煤质化验及煤气产量、质量、热值。试验结果:以不粘煤为原料生产城市煤气是可行的。煤气产率为1205m^3/t,煤气产量为2983m^3/h,煤气热值为12.06MJ/m^3。  相似文献   

3.
总结了金成煤气站投产半年来的经验。结果表明,煤气热值稳定在10.29MJ/m^3以上,一氧化碳含量控制在20%以内,原料煤种范围宽,煤气中的焦油和酚含量低,煤气的材料成本为0.202元/m^3。  相似文献   

4.
本文是在10kg/h固体热载体干馏实验装置上用扎赉诺尔褐煤制取高炉喷吹料和中热值煤气的研究结果。在干馏温度450℃~650℃范围制得煤气110Nm3/t~400Nm3/t,煤气热值为14.7MJ/Nm3~17.5MJ/Nm3,属中热值煤气。可供民用,也可用于补充钢铁企业燃气不足,平衡能源。得低温焦油2%~9%,可加工成化工产品和燃料油。半焦可用于高炉喷吹。  相似文献   

5.
介绍了以灵武煤为原料,在Φ3.3m水煤气两段炉上进行的工业性试验。试验结果表明,采用两段炉工艺生产民用煤气是可行的,煤气产量为1205m ̄3/t,煤气热值为12.15MJ/Nm ̄3。  相似文献   

6.
吉林省煤炭资源缺乏 ,但泥炭资源丰富 .为了寻求一种有效利用泥炭的途径 ,分析了泥炭的基本特性 ,在此基础上进行了外热式泥炭干馏试验 ,详细探讨了泥炭热解煤气的组成、性质及变化规律 .结果表明 ,在适宜温度条件下 ,干馏热解制得的煤气成分与热值接近城市煤气 ,可开发利用 ,以缓解吉林省煤炭资源缺乏的矛盾  相似文献   

7.
徐晖  韩超 《煤化工》1994,(4):47-51
以不粘煤为原料,在运行的Φ3.3m水煤气型两段炉上进行了工业试验,论述了试验过程,原料煤煤质化验及煤气产量、质量、热值等。试验结果:以不粘煤为原料生产城市煤气是可行的,煤气产率为1205Nm ̄3/t;煤气热值为12.06MJ/Nm ̄3。  相似文献   

8.
贺持缓  周声励 《炭素》1999,(3):15-19
生石油焦一般含有10%左右的挥发份,当研磨成5μm以下的细粉后可以直接进行无粘结剂成型和烧结。在1100℃下烧结制品体积密度容易达到1.50g/cm^3-1.60g/cm^3。  相似文献   

9.
综述了各种锅炉烟气除尘方法的优势,基中详尽地介绍麻石水膜除尘器的除尘原理和除尘效果。朝阳轮胎厂3台SHF10-13型沸腾炉使用麻石水膜除尘器后烟尘浓度降至391.7mg/m^3,4台SHL20-25/400A型链条炉烟尘浓度降至251mg/m^3,3台KZL-4型锅炉烟尘浓度降至193mg/m^3,皆达到国家400mg/m^3的标准要求。  相似文献   

10.
戴伟祥 《湖南化工》1998,28(3):35-36
用低萘洗油洗萘工艺取代以柴油洗萘工艺以深脱煤气的萘,净化后煤气萘含量不高于50mg/m^3,符合有关标准,该工艺可大幅度降低生产成本。  相似文献   

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12.
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.  相似文献   

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14.
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.  相似文献   

15.
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.  相似文献   

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18.
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.  相似文献   

19.
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.  相似文献   

20.
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。  相似文献   

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