共查询到19条相似文献,搜索用时 59 毫秒
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糠醛产业现状及其衍生物的生产与应用(二) 总被引:3,自引:0,他引:3
糠醛用途广泛,下游产品多达1600多种,以可再生的农林作物为原料,取之不尽、用之不竭。在石油、煤等能源日趋紧张的今天,大力发展糠醛产业意义重大。本文详细阐述了糠醛的生产工艺以及产业现状,介绍了主要衍生产品的生产和应用,并针对目前存在的问题提出了发展建议。 相似文献
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特种工程塑料聚醚醚酮的生产应用及发展前景 总被引:3,自引:0,他引:3
介绍特种工程塑料聚醚醚酮(PEEK)的性能特征、用途、生产方法、国内外生产和市场情况,并对其在我国的发展前景进行了展望。 相似文献
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Bianca Moreira Barbosa Jorge Luiz Colodette Dalton Longue Júnior Fernando José Borges Gomes Daniela Correia Martino 《木材化学与工艺学杂志》2014,34(3):178-190
This study focused on the production of furfural from agricultural and industrial biomass residues by a hydrodistillation process. Corncobs, sugarcane bagasse, and eucalypt wood were treated with sulfuric, hydrochloric, and phosphoric acids as catalysts, with different acid concentrations (1.5 to 5.2 mol.L ?1). In addition, the eucalypt liquor from the auto-hydrolysis, kraft-dissolving pulp production process was also investigated as a source of furfural, using sulfuric and hydrochloric acids as a catalyst (0.9 and 3.9 mol.L ?1) . Furfural yields of 30.2, 25.8, and 13.9% were achieved for corncob, sugarcane bagasse, and eucalypt wood, respectively, on the basis of biomass dry weight. The efficiency of conversion from pentose to furfural using eucalypt liquor from the auto-hydrolysis kraft process was 71.5% using HCl 3.9 mol.L ?1 . Due to the presence of a high amount of pentose, corncob produced the highest amount of furfural, followed by sugarcane bagasse and then eucalypt wood. 相似文献
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Furfural production by acid hydrolysis and supercritical carbon dioxide extraction from rice husk 总被引:1,自引:0,他引:1
Wirungrong Sangarunlert Pornpote Piumsomboon Somkiat Ngamprasertsith 《Korean Journal of Chemical Engineering》2007,24(6):936-941
The aim of this research was to study the effect of furfural production from rice husk by hydrolysis accompanying supercritical
CO2 (SC-CO2) extraction. The two-level fractional factorial design method was used to investigate the production process carried out
with respect to furfural yield. The process variables are temperature range of 373–453 K, pressure 9.1–18.2 MPa, CO2 flow rate 8.3 × 10−5–1.7 × 10−4 kg/s (5–10 g/min), sulfuric acid concentration 1 to 7 (%wt) and ratio of liquid to solid (L/S) 5 : 1 to 15 : 1 (vol/wt).
The results obtained from the experimental design showed that increasing temperature, pressure, CO2 flow rate and sulfuric acid concentration but decreasing ratio of liquid to solid would improve furfural yield. Moreover,
furfural production by two-stage process (pre-hydrolysis and dehydration) can improve furfural yield further to be around
90% of theoretical maximum. 相似文献
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以NiCl_2·6H_2O为镍源、NaH_2PO_2·H_2O为磷源、乙二醇为溶剂、n(P)∶n(Ni)=3∶1,采用溶剂热法制备得到磷化镍(Ni-P)催化剂,并采用XRD、SEM、TEM、H_2-TPR、H_2-TPD、N_2吸附-脱附、XPS对其进行了表征。催化剂应用于糠醛加氢制备环戊酮的反应中效果良好,并考察了催化剂用量、氢气压力、反应温度、反应时间对反应的影响。结果表明,较优的工艺条件为:以水作为溶剂,原料与催化剂质量比为12,在反应温度150℃、氢气压力2.0 MPa、反应时间4 h时,糠醛转化率达到98.87%,环戊酮收率为68.65%。对催化剂进行稳定性测试,4次重复使用后环戊酮收率仅下降3.25%。 相似文献
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介绍采用气相色谱反吹法,选用GDX-102色谱柱,热导池检测器,反吹阀定量分析糠醛中水分一级排放 该分析方法快速、简便、准确。 相似文献
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叙述了大庆炼化公司润滑油厂糠醛精制装置在实际生产中,注重污染防治,强化环境管理,推行清洁生产,为控制污染物的产生及排放采取了多项技术措施.具体指出了糠醛精制装置目前在正常生产过程中产生的三种污染物,分别分析车间废水、废气、噪声污染物的来源,列出了各种污染物的检测数据,并详细阐述车间已实施的各项相应治理措施,以及措施实施后取得的效果.最后,提出了进一步改进完善建议,上述技术措施的实施将提高企业的经济效益和环境效益. 相似文献