化学工业对环境的污染及其控制技术

化学工业是中国的第一大产业,它包含的范围很广泛,涉及了很多行业和品种。化学工业在我国工业体系和国民经济体系的位置举足轻重。文章介绍了化学工业的对环境造成的污染,并且指出了化工技术与方法对环境污染的控制和处理。重点介绍了超临界流体、等离子体和离子液体等新型技术在环境治理中的应用。     

HYSYS动态减压模块在天然气分子筛脱水塔升降压孔板计算中的应用

天然气脱水是天然气净化过程中必不可少的环节,选择合适的脱水技术和工艺是非常必要的。固体吸附法是天然气深度脱水工艺中最常用的一种工艺。天然气分子筛塔的再生操作中,升降压孔板流量的选取直接决定了分子筛床层的稳定和安全。使用HYSYS动态减压模块模拟计算天然气分子筛塔升降压孔板的流量。并对升降压孔板流量的稳态和动态计算结果进行了对比。     

对二甲苯-醋酸-水三组分物系密度和黏度的测定

在常压、298.15~353.15K条件下,采用U形振动管密度计测定了对二甲苯-醋酸-水三组分物系(水质量分数为5%和10%)的密度,用乌氏黏度计测定了对二甲苯-醋酸-水三组分物系的黏度,用密度数据计算了超额摩尔体积,用黏度数据计算了混合黏度的变化。在不同的温度和组成下,超额摩尔体积为负值,混合黏度的变化为正值。对不同温度下的超额摩尔体积和混合黏度的变化数据由Red lich-K ister方程进行了拟合。计算了对二甲苯-醋酸和水虚拟二组分物系的超额摩尔体积和混合黏度的变化。     

面貌一新的非物质主义设计

在叙述“非物质主义”、“非物质社会”、“非物质主义设计”等新概念的基础上，分析了“非物质主义”对设计的主体、客体及设计理念、设计流程产生的巨大影响，提出了一些对非物质主义的思考。     

不同温度压力下纯水、醋酸+水、对二甲苯+醋酸+水黏度测定(英文)

The viscosities of pure water, the acetic acid + water binary system, and the p-xylene + acetic acid + water ternary system at different concentrations were determined with a rolling-ball viscometer at temperatures from 313.15 to 473.15 K and pressures from 0.10 to 3.20 MPa. The viscosity data were fitted by a correlation equation for the estimation of the mixture viscosities. The average absolute deviations (AAD) of the correlation for binary and ternary systems are 2.48% and 1.77%, respectively.     

Density and Excess Molar Volume of Binary Mixtures ofp-Xylene＋Acetic Acid and o-Xylene＋Acetic Acid at Different Temperatures and Pressures

A new apparatus was designed with a thick-walled glass capillary, electric heater tube with red copper and heat preservation. The thick-walled glass capillary was used for its advantages of resistance to acid corrosion and pressure, and ease of observation. The experimental densities over the entire range of mole fraction for the binary mixture of p-xylene＋acetic acid and o-xylene＋acetic acid were measured using the new apparatus at temperatures ranging from 313.15K to 473.15K and pressure ranging from 0.20 to 2,0 MPa. The density values were used in the determination of excess molar volumes, W. The Redlich-Kister equation was used to fit the excess molar volume values, and the coefficients and estimate ot the standard error values were presented. The experimental resuits prove that the density measurement apparatus is successful.