浅谈省煤器汽水冲击的原因及消除

从省煤器产生汽水冲击的原因着手分析,提出消除省煤器汽水冲击现象的方法和省煤器在运行中应注意的问题,指出只有认识了解汽水冲击产生的物理过程及其原因,才可减少汽水冲击事故的发生。     

利用含钨废催化剂生产钨酸的工业实践

笔者较为详细地阐述了利用含钨废催化剂生产钨酸的工艺流程、各工序反应原理及其操作工艺实践、产品质量情况、原辅材料单耗等。实践证明 ,该工艺实用性强 ,具有显著的经济效益、社会和环保效益。     

烧结机蒸汽系统新老余热管网并网改造

针对烧结机新老蒸汽系统各自独立，使用效率低，不能充分发挥效能的状态，提出了蒸汽系统新老余热管网并网改造，经过一年多的运行，取得了显著的效果。     

Hazardous waste management problem: The case for incineration

We define the hazardous waste management problem as the combined decisions of selecting the disposal method, siting the disposal plants and deciding on the waste flow structure. The hazardous waste management problem has additional requirements depending on the selected disposal method. In this paper we focus on incineration, for which the main additional requirement is to satisfy the air pollution standards imposed by the governmental restrictions. We propose a cost-based mathematical model in which the satisfaction of air pollution standards is also incorporated. We used the Gaussian Plume equation in measuring the air pollution concentrations at population centers. A large-scale implementation of the proposed model within Turkey is provided.     

锌精馏余热利用可行性探讨

本介绍了锌精馏精炼的简单原理、设备组成、余热资源及利用方案。     

利用高酸值餐饮废油脂制备生物柴油

以高酸值餐饮废油脂为原料,在酯化反应后再经两步酯交换反应制备生物柴油。在酯化反应中添加吸水剂可降低油脂的酸值,经一次酯化反应即可将油脂的酸值降至2m g/g左右,满足酯交换反应的要求。考察了酯化反应中吸水剂的添加方式、种类及其用量对酯化反应的影响,以及酯交换催化剂的种类及用量对脂肪酸甲酯(FAME)收率和产物组成的影响。实验结果表明,以凹凸棒土为吸水剂(用量为餐饮废油脂中游离脂肪酸质量的3%),且在酯化反应30m in时加入,酯化效果较好;以质量比为1∶1的NaOH和KOH混合物为催化剂进行两步酯交换反应时,催化剂的最佳用量依次为1.00%和0.75%(质量分数,基于油脂的质量),FAME收率最高达到96.33%。     

陈垃圾土的压缩性试验研究

首先介绍了重庆市主城区填埋场的现状，论述了深入研究陈垃圾土压缩特性的重要性。作者在简要总结了采样场内陈垃圾土的基本物理性质后。通过室内侧限压缩试验(亦称固结试验)，得出了描述陈垃圾土压缩性质的基本参数，如αv、Es、mv和Cc等，试验表明陈垃圾土是一种不同于常见土类的高压缩性欠固结土，试验结果可为填埋场再利用和已封闭填埋场的沉降计算提供依据。     

A general formula for the evaluation of thermodynamic and aerodynamic losses in nucleating steam flow

Near saturation steam undergoing rapid expansion, with homogeneous nucleation of water droplets, is numerically studied in a series of converging/diverging nozzles with and without shocks. To understand loss mechanisms in such flows a numerical model is presented to calculate thermodynamic losses, which is further used to quantify associated total aerodynamic losses. For the converging/diverging nozzle configuration, the model shows that the overall thermodynamic loss is only mildly influenced by increasing shock strength, while the aerodynamic losses follow that of the single phase flow, and are of the same magnitude as the thermodynamic loss only in the case of very weak shocks. The thermodynamic losses can be attributed to two influences, the homogeneous nucleation event, and the post-shock thermal oscillations in the two-phase system. The calculations rely on a new two-phase CFD model, previously reported, for non-equilibrium phase change with droplet nucleation applicable to general 3D flow configurations.     

沸石处理稀土生产中氨氮废水的实验研究

为实现稀土生产中氨氮废水的治理,选用天然吸附材料沸石,用它的吸附和离子交换性能来处理稀土生产中的氨氮废水,采用静水和动水两种方法进行实验。实验结果表明,用沸石处理工业废水中的氨氮,去除率达50%以上。     

汽轮机回热系统给水焓升的最优分配

从汽轮机回热系统的实际情况出发，运用非线性规划理论和计算机技术，解决了给水焓升设计中的最优分配问题。结合具体实例，针对国产200MW汽轮机回热系统给水焓升的分配进行了说明。