新型大容积焦炉的保护力分析及炉柱设计开发

阐述了新型大容积焦炉炉体结构的特点及炼焦工艺新技术的应用,对新型大容积焦炉高向各区域的保护力分布进行分析,提出了新型大容积焦炉炉柱设计的思路和方法,利用数值模拟仿真技术对炉柱进行静力学分析,得到适用于新型大容积焦炉的炉柱结构形式。     

我国大容积捣固焦炉的技术特点及装备水平

通过对6．25m捣固焦炉和5．5m捣固焦炉的工艺参数、工艺流程、焦炉炉体、焦炉机械、TZ装备、焦炉环保、炉型成熟性和投资等方面的分析,详细阐述了国内几种典型大容积捣固焦炉的技术特点、装备水平及其发展历程,并为建设大容积捣固焦炉提供了参考意见。     

6m大容积焦炉烘炉实践与体会

介绍了 6 m大容积焦炉由冷态到转入正常加热温度的烘炉操作过程中 ,按照一定的升温曲线 ,通过对焦炉热工和炉体膨胀的科学管理 ,确保新建焦炉顺利由冷态过渡到生产状态。     

延长大容积焦炉寿命的技术

一般认为,大容积焦炉的寿命不如小型焦炉,因此,许多国家发表了很多关于大容积焦炉的热修论文。鹿岛钢厂的焦炉已操作了15~25年,已发现有很多损坏的地方。该厂的焦炉技术规格列于表1。因Ⅱ-A、Ⅱ-B炉自投产以来的操作条件不断变化,其损坏状况最严重。     

山西省最大的焦炉落成

山西省第一大焦炉——ＪＮ６０－８９型大容积焦炉在山西焦化股份有限公司９０万ｔ焦炉易地改造工程工地上落成。１号焦炉的砌筑完成，标志着这一省“九五”重点技术改造工程又取得了实质性的进展，为２０００年７月一期工程正式投产奠定了基础。这种炉型是在消化移植宝钢引进大容积焦炉经验基础上，借鉴德国氨硫循环洗涤生产元素硫的煤气净化工艺而设计的国内最先进炉型，整个生产过程采用ＤＣＳ控制。山西焦化９０万ｔ焦炉易地改建项目拟建设国内最先进的ＪＮ６０－８９型大容积焦炉２×５０孔，总投资９．６５亿元。其中１号焦炉总工程量…     

JN60型焦炉护炉铁件负荷的管理

JN60型焦炉是目前我国自行设计的炭化摩最高、容积最大的焦炉，其护炉设备与JN43型等焦炉有所不同。焦炉采用了H型钢炉柱，燃烧室部位的小弹簧数量增加且各线成对布簧，护炉铁件结构采用大保护板形式。     

焦炉烘炉期间炉柱曲度变化浅析

以某焦化厂5.5m焦炉烘炉为例,通过分析焦炉烘炉的升温特点,研究焦炉炉体在烘炉期间的膨胀规律,浅析炉柱曲度在烘炉期间的变化规律.研究发现,焦炉炉柱曲度在烘炉期间的变化规律呈先增大后减小的趋势.     

焦炉不同部位用火泥

最近几年来,建造了许多大容积焦炉,为延长其使用寿命,都将炉高定为6～7m,炭化室容积则定为41.6m~3。一般认为,大容积焦炉的寿命取决于三个基本条件:结构特点,使用条件和砌炉用的耐火材料(包括砌炉火泥浆在内)的质量。对火泥有特殊的要求,其中最为首要的就是在建造和使用过程中能使砌体牢固     

焦炉大间台建筑设计的分析

鞍钢鲅鱼圈焦化厂建有中冶焦耐开发的首座炭化室高6.98m的JN70-2型大容积顶装焦炉,4座52孔焦炉组成2个炉组,与常规布置相比,2个炉组之间设置大间台。大间台总长为70m,总高为15．8m。顶部用于装煤车检修与通过,底部空间设有独立的焦炉综合电气室。工程设计中充分利用了有效空间．既便于焦炉的集中操作,又解决了焦炉综合电气室的单独占地问题。     

焦炉炉柱曲度与弹簧吨位测量工具的改进

焦炉生产中，炉柱曲度和弹簧吨位必须按周期每月测量，以便于及时了解炉柱受力与炉体膨胀情况，从而采取有效措施使炉体得到保护。我公司焦炉从1988年投产至今，炉柱曲度与弹簧吨位测量一直采用钢板尺直接测量，受生产条件和操作环境的限制，测量极不方便，测量准确度也受到影响。     

乙烯酮(双乙烯酮)下游产品废水的治理技术

乙烯酮(双乙烯酮)是十分重要的化工中间体,其下游产品较多。江苏某化工厂开发生产乙烯酮(双乙烯酮)下游产品三十多个,年生产规模三万多吨,是国内以乙烯酮(双乙烯酮)为中间体生产精细化学品的综合骨干企业。针对乙烯酮(双乙烯酮)下游产品废水特点,该厂结合企业实际,开展了产品优化,结构调整,清洁生产,资源循环利用,节水降耗等工作,从源头削减了污染物的生产。同时投资二千多万元新建预处理装置三套,6000m3/d废水生化处理装置一套,使全厂乙烯酮(双乙烯酮)下游产品的废水得到了有效的治理。     

几种乙炔加压设备性能的比较

阐述并比较了几种加压设备在乙炔加压清净过程中的性能和特点。     

三种煤样燃烧热的测定

本文通过三个厂家提供的三种煤样燃烧热的测定,由测定结果综合得出3号煤样燃烧最完全、燃烧热也最大,是三个煤样中最好的一种。     

Semi-empirical equation of state of metals. Equation of state of aluminum

A semi-empirical equation of state for metals is described. Its capabilities are demonstrated by the example of the equation of state for aluminum. New experimental data are presented on the location of the isentrope of aluminum for unloading from the state at p = 229.71 GPa on the shock adiabat to an aerogel (SiO₂) of density 0.08 g/cm³. __________ Translated from Fizika Goreniya i Vzryva, Vol. 44, No. 2, pp. 61–75, March–April, 2008.     

水泥水化热测定方法综述

水泥水化热是中、低热水泥和核电工程用水泥的一项关键的技术指标。全球范围内测定水泥水化热的方法有溶解法、直接法/半绝热法、等温传导量热法三种。本文总结了中、美、欧相关方法标准,对其测试原理、仪器设备、试验过程等方面进行了比对,并对其在领域的应用做了简单的概括。     

小议汽车涂装工艺设计对涂装成本的影响

论述了涂装工艺设计对涂装设备投资、涂装生产成本的影响。     

Measurement of the gradient of viscosity with composition of mixtures of non-ideal gases

A perturbation viscometer is a differential capillary viscometer that measures the logarithmic viscosity gradient of the viscosity-composition curve for gas mixtures. Measurements are made at different gas mixture compositions. Integration of the logarithmic viscosity gradients measured over the full composition range gives the mixture viscosity relative to the viscosity of one of the pure components of the gas mixture. This method is attractive because, for measurements of equal precision, integration of the gradients is potentially an order of magnitude more precise than measurement of the viscosities directly. It can also work at high and low temperatures and perhaps high pressures.The perturbation viscometer has been used to make measurements on ideal gas mixtures at ambient and elevated temperatures. The situation is more complicated when the gas mixtures are non-ideal. Extra effects due to density differences, molar volume change on mixing and differential thermal expansion may be measured in addition to the desired viscosity change producing systematic errors in the results. Thus, a more sophisticated apparatus is required. The standard perturbation viscometer has been modified to separate out the extra effects to permit measurement of the true change in viscosity. In addition, the theoretical operation of the modified apparatus has been revised to account for the design changes to permit calculation of the viscosity-composition profiles from the results.The apparatus has been tested using helium-HFC-125 mixtures and two new viscosity-composition profiles are presented for these mixtures at 23 and . Internal consistency tests have been used to confirm that the data produced are of high quality with an estimated uncertainty in the viscosity ratio data at of 0.9% and at of 1.5%.     

Calorimetric and Computational Study of Enthalpy of Formation of Diperoxide of Cyclohexanone

A thermochemical rather simple experimental technique is applied to determine the enthalpy of formation of Diperoxide of ciclohexanone. The study is complemented with suitable theoretical calculations at the semiempirical and ab initio levels. A particular satisfactory agreement between both ways is found for the ab initio calculation at the 6–311G basis This set level. Some possible extensions of the present procedure are pointed out.     

塔设备改造选型的分析

就当前扩产增容中塔设备设计和改造时板式塔和填料塔的选型问题加以分析。在评述目前国内常用的几种塔板和新型填料之后，着重介绍一种新型塔板（导向梯形浮阀塔板）和一种新型填料（波环填料——乾隆帕克）。     

Effect of degree of deacetylation of chitin on the properties of chitin crystallites

In the present article, chitin from crab shell was systematically deacetylated using a NaOH treatment with control of the reaction time. The degree of deacetylation, monitored using solid-state NMR, revealed that the reaction was pseudo-first order. Based on this, swollen and NaOH-saturated particles are proposed as the reaction system. The weight loss of the partially saponified and neutralized samples after HCl hydrolysis increased linearly with the degree of deacetylation. The crystallinity of the samples was found to increase after acid hydrolysis. According to conductimetric titration, the surface charge density of the crystallites, after acid hydrolysis, was found to increase with base treatment time. The effect of surface charge on the formation of a chiral nematic phase, due to the rodlike nature of the crystallites, was explored. These results show that because the contribution of charged particles to the ionic strength was significant the double layer compression was affected, especially since the surface charge density was close to the Manning limit. © 1997 John Wiley & Sons, Inc. J Appl Polym Sci 65:373–380, 1997