闪蒸气提氢装置运行总结

兖矿峄山化工公司（原邹城市氮肥厂）现有2套脱碳系统，闪蒸气量为7000～8000m^3／h（标态），现有闪蒸气一部分输送至造气吹风气燃烧副产蒸汽，另一部分输送至碳化工段生产碳酸氢铵，这造成了很大的浪费。为了降低成本，公司投资400万元，建设了1套10000m^3／h（标态）的变压吸附（PSA）提氢装置，将脱碳闪蒸气中的氢氮气回收利用并作为合成氨的原料气。     

气刀操作条件对聚丙烯密相脉冲气力输送行为的影响

在一管线水平长１９ｍ、垂直长１１ｍ、内径５０ｍｍ的密相脉冲气力输送实验台上进行了气刀操作条件对管道输送行为影响的实验研究．结果表明：气刀操作条件对管道输送气速、输送能力、固气比、能耗等均有明显影响．确定最佳的气刀操作条件需综合考虑发送压力、输送结构、物料物性等因素．     

15kt/a直纺涤纶短纤维装置熔体输送能力的研究

分析了15kt／a直纺涤纶短纤维装置熔体输送能力的影响因素。该装置增容至24kt／a，熔体输送管线耐压能力可满足生产，熔体停留时间减少7．5min，熔体温升提高3．7℃，特性粘数降减少0.007dL／g。     

高炉水淬渣处理含铬（V1）废水的研究

研究了以高炉水淬渣为吸附剂处理含铬（VI）废水的工艺条件。试验结果表明，将废水的pH由0．5调至1，高炉水淬渣粒度为280日（即0．053mm）、用量为0．02g／mL，作用时间为30min，温度为25℃时，铬（VI）的去除率为95．61％，废水中铬（Ⅳ）浓度由7．225mg／L降至0．317mg／L，低于国家污水综合排放标准（GB8978-1996）第一类污染物最高允许排放浓度。     

乙炔水环压缩机机械密封改造及应用

1乙炔水环压缩机工作原理 使用水环压缩机作为乙炔气的输送设备,首先要考虑的是乙炔易燃、易爆的性质和对输送的要求,乙炔气不宜在高压条件下输送（不超过0．15MPa）．以确保输送安全。水环压缩机叶轮与泵壳的间隙较大,不易因碰撞而产生火花,对输送易燃、易爆气体安全可靠。泵腔内的工作液为水,乙炔气在泵腔内呈湿气状态,从而可有效抑制乙炔气的爆炸。水环压缩机具有一定的抽气能力,输送压力不高,排气量大,输送乙炔气相对安全可靠,其工作原理（见图1）如下。     

南化研究院碳捕集技术占国内95％市场

南京有关方面透露，中石化所属的南化集团研究院开发的低分压二氧化碳捕集技术已在北京热电厂：华能上海石洞口发电有限公司、胜利油田等20多家电力石化等企业推广应用，年捕集高纯度二氧化碳100多万吨，应用范围从传统的合成二氧化碳捕集拓展到天然气、炼厂气、EO／EC循环气、F—T合成循环气、各种烟气、高炉气、窑气等领域。     

输送灰浆用的高压树脂软管

日本市场上新出售一种输送炭（砂）浆用的高压树脂软管，常温下的容许压力为1.47MPa，可用作输送灰（砂）浆管线的高压段或中间段。其规格有两种：公称尺寸／mm内径／mm外径／mm螺距／mm5050．864．5106563．579．014．3该树脂管有如下特点：①骨架材料与PVC复合，提供了优异的     

扎赉诺尔褐煤制取高炉喷吹料和中热值煤气研究：（I）煤气,焦油产率及性质

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。     

扎赉诺尔褐煤制取高炉喷吹料和中热值煤气研究 (Ⅰ)煤气、焦油产率及性质

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。     

Φ2 6m×40m预分解窑完善及改造经验

我厂Φ２．６m×４０m预分解窑是１９９２年１０月建成并投入使用的，设计产量为４００t／d，采用日本KSV－５预分解烧成工艺技术，从试产到正常运转，积累了一些经验。现对其做进一步的分析，以便查找和有效解决制约预分解窑烧成质量的原因。１存在的问题及改进办法１．１煤粉供应试产初期，由于煤粉输送风管堵塞，喂煤双管螺旋喂料机不下料，发生煤粉棚仓现象，造成窑内热工制度不稳定。主要原因是煤磨磨机运转不正常，煤粉水分波动大，煤粉输送差。用作煤粉输送的气力提升泵喷嘴调整不好，输送风机压力偏低，气力提升泵返风严重。将气…     

SEDIMENTATION OF BINARY MIXTURES OF PARTICLES OF UNEQUAL DENSITIES AND OF DIFFERENT SIZES

A model is developed for the sedimentation from a suspension of two particle species of unequal densities and of different sizes. The composition and the thickness of various layers in the sediments are predicted using graphical and analytical methods. The model predictions were in excellent agreement with experimental results, when the particle size ratio was ≥ 108. When size ratio of the particles was 2.60 and 4.31 the agreement occurred in about 50 percent of the cases.     

骑式摩托车油箱喷涂工艺的改进

面对日益激烈的市场竞争,摩托车油箱外观质量越来越成为影响销售的因素之一。文章介绍了改进工艺后的油箱涂装,该涂装体系提高了油箱外观的丰满度,降低了油箱涂装的生产成本。     

COMPARISON OF METHODS OF ANALYSIS OF GYPSUM1

The different analytical methods proposed for the evaluation of gypsum have been subjected to an experimental test. A combination method, consisting of a fusion with KHCO₃ and determination of CaO by KMnO₄ titration, the SO₃ by Andrews method of titration of BaCrO₄ has been found to give very reliable results with the least consumption of time.     

氢气纯度分析方法准确性的探讨

ONACCURACYOFANALYSISOFOFHYDROGEN1前言我公司目前应用的氢气纯度分析方法有两种,一种是爆炸反应法,另一种是焦性没食子酸吸收法。几年来,人们对两种分析方法的准确性曾有过褒贬不一的评论。这里我们也谈谈自己粗浅的观点。2爆炸法测定氢气纯度一定量的氢气样品与适量的空气之均匀混合物因反应后生成液体水而引起气体体积减少,减少的体积等于参加反应气体体积之和。其中l／3为氧气,2／3为氢气。根据氢气取样量和反应前后混气体体积之差,以及氢气在反应中的体积比例关系,可计算出样品的氢气纯度。计算公式式中：A一混…     

HEASUREHENT OF INSTANTANEOUS RATES OF LOSS OF VOIATILE COMPOUNDS DURING DRYING OF DROPS

A novel technique serves to monitor instantaneous rates of loss of a volatile solute from a suspended drop during drying. A highly sensitive electron capture detector is used to monitor concentrations of SF6 released into a flowing gas stream from a suspended, drying drop. Simultaneously, the appearance and morphological development of the drop are monitored with a video camera. This provides the wherewithal of relating instantaneous rates of loss of the volatile solute to particular events during the development of particle morphology.

Initial experiments have been carried out with drops of aqueous solutions of glucose, sucrose, maltodextrin and coffee extract. The results clearly display the onset of the volatiles-retentive selective diffusion phenomenon. There is also substantial loss of the volatile component later in the drying process, when the drops undergo repeated ex ansion, bursting and cratering due to the formation of internaf bubbles. These experiments appear to be the first quantitative demonstration of major losses accompanying changes in drop morphology.     

用两个形状指数表征粉煤灰颗粒形貌的研究

引用两个形状指数表征颗粒形状的概念,即先将颗粒形状近似为椭圆,再将椭圆图像分离:以圆为基准的颗粒宏观形状指数δ;以光滑椭圆为基准的颗粒轮廓凹凸度,即微观形状指数ζ。分析和发展了近似椭圆模型。并运用图像分析仪对粉煤灰、水泥样品进行实验。结果表明,粉煤灰颗粒的两个形状指数δ和ζ都大于水泥颗粒。证明粉煤灰颗粒的球形度、表面光滑度优于水泥,而且,随着粒径增大,δ和ζ呈下降趋势,表明磨制颗粒越粗。(?)粒形状越不规则。文中还运用近似椭圆模型再现了颗粒的模拟图像。     

典型煤碳燃烧特性研究和数值模拟

本文以三种典型煤的碳燃烧为研究对象，分别采用简单一维沉降燃烧方式和等温加热燃烧方式，实验研究了煤在快速加热条件下，其碳的初期和中，后期燃烧过程。以实验为基础，建立了煤的碳燃烧模型，变工况数值模拟了煤的碳燃烧过程，揭示了煤不同条件下的单颗粒碳燃烧特性。     

ANALYSIS OF RECENT MEASUREMENTS OF THE VISCOSITY OF GLASSES

Viscosity of Simple Soda-Silicate 500° to 1400°C Comparison of the results given by English with those of Washburn, Shelton and Libman, indicates a discrepancy in the absolute values of log₁₀ viscosity amounting to 0.6, those of Washburn et al., being relatively too high. If correction for this is made, the isothermal curves of log₁₀ viscosity as a function of soda content are smooth up to 50% Na₂O, showing no inflection. The observations as a function of temperature T are all represented within accidental error by an equation of the type where all three constants vary regularly with the composition. Change of Viscosity of Glass (6SiO₂, 2Na₂O) due to Molecular Substitution of CaO, MgO and Al₂O₃ for Na₂O The effect is clearly brought out by plotting (from the results of English) the change of log₁₀η due to the substitution as a function of temperature. The curves each show a sharp bend at a temperature between 840° and 1050°C, which is designated the aggregation temperature T_a. If we divide these curves by the corresponding percentage substituted, we get curves for each oxide which are straight and parallel below the aggregation temperatures, the slopes (increase of change of log₁₀η per 100°C) being −0.056 (CaO), −0.055 (MgO), −0.018 (A1₂O₃) per per cent oxide substituted. For substitution of 1/2 molecule the slopes are −0.325 (CaO), −0.23 (MgO) and −0.18 (Al₂O₃) per 100°. At the aggregation temperature the change of log₁₀η per per cent is a minimum, 0.03 to 0.06 for CaO, 0.12 for MgO, 0.07 for Al₂O₃. Evidence of Aggregation in Glasses, from viscosity Measurements The sharp bends in the plots of change of log₁₀η due to substitution of an oxide for Na₂O, suggest the beginning of molecular aggregation at these temperatures. These aggregation temperatures are close to the devitrification temperatures, but the effect on the viscosity curves cannot be due to actual devitrification since it does not change with time. Taking the aggregation temperatures as equal to devitrification temperatures, additional isotherms are roughly sketched into the equilibrium triangle of the system Na₂O-CaO-SiO₂. Change of Viscosity of Glass (4SiO₂, 2Na₂O) due to of Substitution of B₂O₃ for SiO₂ The change of log₁₀η (from the results of English) is plotted as a function of temperature, and also the change of log₁₀η per per cent B₂O₃. The curves are more complex than for the substitution for Na₂O.     

环氧树脂羟基值测定方法的研究

利用乙酸酐、吡啶和浓硫酸混合的乙酰化试剂测定环氧树脂中羟基值含量的方法具有操作简便、滴定终点明显和分析结果误差小等优点。     

茶多酚提取方法进展

本文综述了国内外现有茶多酚提取方法的现状以及近期的研究进展，并对其优缺点进行了评价。这将有助于中低档茶的综合利用和茶多酚的进一步开发应用。