膜法富氧助燃技术在玻璃窑炉中的应用研究

发达国家称膜法富氧技术为“资源的创造性技术”我们在玻璃窑炉上用氧含量２８－３０％的富氧空气来助燃时，富氧量仅为所需空气量的百分之一左右；平均增产１０．２％，节约燃料１１．０％，玻璃质量均为提高，窑炉寿命亦相应延长，烟尘排放也低于国家环保标准，一般３－１１个月就能收回全部投资，而且社会效益和经济效益均显著。     

变压吸附富氧助燃技术在陶瓷窑炉中的应用

通过技术分析与应用试验表明，变压吸附富氧助燃技术用于陶瓷窑炉技术可行，不仅能节省燃料、降低污染，明显提高产品的产量和质量，而且可以改善燃烧效率，延长炉龄，减少烟尘排放，综合效益显著。     

富氧燃烧技术在陶瓷窑炉中的应用分析

对在陶瓷窑炉中富氧燃烧技术的应用展开了分析与评价.分析表明,随着氧浓度的增加,火焰温度呈非线性上升,CO2和H2O水蒸汽分子辐射力得到加强,热效率大幅提高,NOx生成则先快速上升而后快速下降;同时也对过剩空气系数、节能和窑炉结构进行了较为深入的分析.     

膜法富氧助燃技术在我厂运用的小结

介绍了膜法富氧助燃技术及装置运用于我厂 2 0t/h燃煤蒸汽锅炉的运行情况 ,对该技术的节能机理作了简要阐述 ,并介绍了该技术的工艺流程及设备、安装及调试情况 ,并对节能效果作了分析。     

膜法富氧助燃技术提高加热炉热效率

着重从改善二甲苯加热再沸炉目前的燃烧状况入手,对其高温位烟气余热无法全部回收以及加热炉热效率低的实际情况进行剖析,建议引进膜法富氧助燃技术,以一个方面的思路提出解决芳烃装置二甲苯加热再沸炉运行现状的办法。     

膜法富氧技术在化工中的应用研究

膜法富氧技术系指利用空气中各组分透过高分子膜时的渗透速率不同,在压力差驱动下,将空气中的氧气富集来获得富氧空气的技术。工业发达国家称之为“资源的创造性技术”,目前主要有两种工艺流程,即正压法和负压法,前者适用于氧氮同时应用或对氧浓度要求较高的场合。早在 80年代初,许多发达国家都投入了大量人力物力来研究膜法富氧技术,特别是日本,其通产省就资助了旭硝子等 7家公司和研究所参加“膜法富氧燃烧技术研究组”。由于能源紧张,日本先后有近 20家推出膜法富氧装置。国内从 1986年起有中科院的 4个研究所开始国家“七五”…     

陶瓷窑炉富氧燃烧的研究

讨论建立了陶瓷窑炉燃烧零维燃烧数学模型,研究陶瓷窑炉富氧燃烧技术,模拟了一次助燃风富氧燃烧对节能的影响以及产生的效果。从而对燃气陶瓷窑炉富氧燃烧提出了建设性的意见。     

富氧燃烧在陶瓷窑炉中的应用及经济效益分析

当前富氧燃烧技术正在逐步发展,其应用的规模和范围正在不断扩大,本文探讨了富氧燃烧的节能特性及其对环境和陶瓷窑炉结构的影响,对富氧燃烧技术在陶瓷窑炉的应用进行经济效益分析,最后还就发展趋势和有待进一步研究的问题进行了分析。     

富氧助燃在玻璃熔窑中的应用

富氧助燃是节约能源、提高产量、改善质量的有效措施.因此,如何推广富氧燃烧技术是国内玻璃熔窑节能的主要课题之一.本文综述了富氧助燃在各种窑型中应用的方法、原理及效果,并对富氧助燃后窑内的火焰结构作一定分析.     

膜法富氧的应用进展

膜法富氧能用于所有燃料、所有窑炉的助燃，社会效益和经济效益显著。膜法富氧用于医疗保健比其它氧源体积小，操作简单，安全和经济。同时探讨了用于柴油机和造气炉的可行性。     

膜法富氧助燃技术用于石化行业新进展

膜法富氧助燃技术,特别是局部增氧助燃技术在石化行业的应用越来越广泛,目前成功实施了9种窑炉。主要介绍了该技术在芳烃加热炉、减压加热炉、油田加热炉和煤炉中的应用,不仅明显节能,而且延长炉龄和明显减少CO、CO2、NOx、SOx及粉尘的排放,指出局部增氧助燃技术在石化行业的节能减排和节约资源等方面将有广阔的前景。     

SBS/VP homograft membrane for oxygen enrichment

The grafting of 4-vinyl pyridine (VP) onto styrene-butadiene-styrene triblock copolymers (SBS) by homografting irradiation with dissolved oxygen was studied. Homograft membranes of various degree of grafting were prepared from a casting solution of grafted copolymer in benzene. The mechanical properties of membranes, gas permeability, and the effect of operating temperature on gas permeation were investigated. The degree of grafting of 8.4% was the largest at an irradiation time of about 15.5 h. It was smaller at both shorter and longer duration because of the interference of dissolved oxygen. It was found that the tensile strength and elongation of SBS-g-VP were similar to those of SBS. The stress relaxation of SBS-g-VP was slower than that of SBS, and this might be due to the formation of rigid microphase separation domain of poly(4-vinyl pyridine), which acted as permanent crosslinking points to reduce the stress relaxation. Using the properties of high flux of SBS and high O₂/N₂ selectivity of poly(4-vinyl pyridine), the performance of gas permeation of 4-vinyl pyridine homografted SBS membrane was studied. The selectivity of SBS-g-VP membrane increased with increasing degree of grafting. However, it was done at the expense of a decrease in the gas permeability. When the operating temperature of gas permeation increased, the permeability of oxygen and nitrogen increased, and the O₂/N₂ permeability ratio decreased. The activation energy (Ep) for gas permeation through different degree of grafting of SBS-g-VP membrane (obtained by the Arrhenius law) increased with increasing degree of grafting. For ungrafted SBS membrane, Ep was 5.5 kcal/mol for oxygen and 7.2 kcal/mol for nitrogen. For 8.4% grafting degree SBS-g-VP membrane, Ep for oxygen and nitrogen, were 6.5 and 8.1 kcal/mol, respectively.     

MMA/TPX homograft membrane for oxygen enrichment

Utilizing the factors of degradation and crosslinking of TPX polymer and high O₂/N₂ selectivity of MMA, the performances of MMA homografted TPX membrane are efficiently improved compared to those of pure TPX membrane. The degradation and crosslinking of TPX polymer solution with or without dissolved oxygen during irradiation were observed and proved in existence by the gas permeability, mechanical, and viscosity change study. High O₂/N₂ permeability ratio of 7.6 and fairly high oxygen permeability of 28 × 10^?10 cm³ cm/cm² s cm Hg of the membrane which was cast from the degassing polymer solution, with 20% degree of MMA grafting, can be obtained. Also the membrane for high oxygen permeability of 63 × 10^?10 cm³ cm/cm² s cm Hg with an O₂/N₂ permeability ratio of 4.5, which was cast from the polymer solution with dissolved oxygen, can be obtained under the condition of 60 h irradiation time and about 7% degree of grafting. O₂/N₂ selectivity of TPX membrane can be improved by homografting method with lower MMA grafting degree than that of heterografting method.     

TPX/siloxane blend membrane for oxygen enrichment

The effects of composition, molecular weight, and milling temperature on homogeneity, gas permeability, selectivity of oxygen/nitrogen, and mechanical strength of the TPX/siloxane blend membranes were studied. By adjusting the blending conditions and hence controlling the homogeneity, the gas permeability of TPX membrane was significantly improved without loss of oxygen/nitrogen selectivity. The oxygen permeability of 1.57 × 10^?8 cm³ (STP) cm/cm² s cm Hg and the oxygen/nitrogen permeation ratio of 6.92 can be obtained under the condition of TPX (MX-001)/siloxane (75,000 MW) = 9/1 at 65°C milling temperature. This membrane possesses 133 kg/cm² tensile strength and 92% elongation. The morphology of the blend membranes was studied.     

陶瓷膜技术的应用

介绍了陶瓷膜过滤工艺,以及其工艺流程短和因采用PLC自动控制减小了操作人员的劳动强度的特点,从投资和运行两方面与聚四氟乙烯有机膜进行了对比,并总结了运行中出现的问题,提出了今后陶瓷膜过滤工艺的改进方向.     

陶瓷纤维在陶瓷窑炉上的应用及展望

介绍了陶瓷纤维在陶瓷窑炉上的应用,并针对应用中存在的一些问题提出了看法,为陶瓷纤维的实际应用提供参考。     

生物转化过程中的膜分离技术

膜分离技术与生物转化过程的结合为生物合成与分离一体化的膜生物转化过程的开发开辟了广阔的空间,同时也为工业化生产过程的节能降耗提供了有力的技术支持途径。本文作者针对发酵、酶催化、污水处理和燃料乙醇生产等生物转化过程中有关膜分离过程的研究和应用概况进行了综述,对膜分离技术与生物转化过程的结合方式、途径和应用中存在的问题进行了分析,并对未来的研究趋势进行了展望。     

陶瓷膜盐水精制技术的应用

介绍了陶瓷膜法一次盐水精制的实际应用中出现的问题,并提出了相应的改进措施。     

陶瓷膜过滤技术在盐水精制中的应用

主要介绍了陶瓷膜过滤技术在盐水精制中的应用情况。根据试验过程中出现的问题,总结出陶瓷膜过滤工艺应注意的问题,并与其他过滤工艺的运行费用进行了比较。