Environmental and climate justice and technological carbon removal

Environmental justice (EJ) and climate justice are becoming central foci of climate policy. Awareness is also growing on the need for some amount of carbon dioxide removal (CDR) to curb warming to 1.5 °C. In this paper we map dimensions of environmental and climate justice that stakeholders and communities will need to consider -- from local to global scales. Mapping issues is a step towards developing frameworks to undertake CDR in an environmentally just way.     

耐腐蚀高压柱塞泵用新型双相不锈钢的研究

叙述了新型双相不锈钢－ＷＳＤ钢的组织及其耐蚀性能。试验结果表明，ＷＳＤ钢在氯化物介显示出优异耐蚀性能，其抗点蚀性能远超过Ｃｒ１３，１８－８Ｔｉ，３１６Ｌ等钢种，达到国外Ａｌ－６Ｘ，ＳＡＦ２２０５等钢种的水平。     

低压铸造三维温度场的冷却边界条件处理

低压铸造模具结构比较复杂，存在多处冷却系统对模具进行强制冷却。对低压铸造的多种类型的界面根据其换热的特点作了大致分类。针对每种情况，考虑了冷却介质和冷却管道的个性参数，建立了相应的计算模型，并编制计算程序对实际铸件进行了模拟计算。     

压力管道设计中的防振措施

针对压力管道产生振动的原因 ,提出了一些减小和防止管道振动的措施 ,以便将管道振动控制在一定的范围内 ,使压力管道系统能得以安全运行。     

纺机织轴边盘的金属型低压铸造

介绍了采用金属型低压铸造生产边盘所涉及的设备、模具、工艺 ,并对产品质量和经济效益进行了分析     

低压铸造凝固模拟中时间步长的实用算法

针对低压铸造凝固模拟计算过程中存在的收敛性问题，提出了一种能够处理复杂边界条件的简单算法，准确地给出了临界时间步长，避免了计算发散的现象，同时减少了计算的工作量。     

浅谈气力提升系统的设计

阐述了气力提升系统的组成、原理、选择原则和设计过程。并对气力提升系统与传统提升装置进行了分析、比较,指出气力提升系统具有设备性能稳定、耗能小等优点,有着很好的应用前景,值得推广。     

压力容器无损检测 --长管拖车气瓶的无损检测技术

长管拖车是新类型的压力容器,作为一种高效运输工具,在许多领域应用广泛。综述了国内外拖车气瓶在制造和使用过程采用的各种无损检测方法及标准。方法包括超声、磁粉、渗透和声发射检测等。并介绍了各种无损检测方法的特点。     

磷酸萃取系统中的测量与控制

磷酸萃取是6万t磷铵料浆法流程的关键之一，重要的控制参数有矿浆、硫酸、返回淡磷酸的加入量及萃取槽的液位、压力、温度等。     

OPTIMIZATION OF PRESSURE SWING ADSORPTION EQUIPMENT PART II OPTIMIZATION OF TWO BED OXYGEN GENERATORS

Local equilibrium model described in Part I is used to stimulate both, the steady state operation conditions and transient regime after the start of PSA equipment. The effect of axial dispersion, adsorption isotherm nonlinearity and high pressure level is simulated. On the basis of numerical analysis, the operation of a classical two-bed oxygen generator is compared with two configurations having pressure equalizing step. The optimization strategy of the given PSA equipment has been proposed and the procedure is demonstrated on an example. The scaling-up condition for PSA equipments which can be described by local equilibrium model has been proposed on the basis of the theoretical analysis.