医疗废物高温蒸汽灭菌处置工艺

医疗废物高温蒸汽灭菌处置工艺是一项适合于处置10 t/d以下感染性医疗废物和损伤性医疗废物经济可行且对环境有益的技术。从医疗废物的组成及其影响因素出发,探讨了医疗废物的处置工艺原理,介绍了高温蒸汽灭菌工艺流程和技术特点,通过与焚烧工艺比较,突出了高温蒸汽灭菌工艺的优越性及其适用性。     

总铬分析前处理方法的改进探讨

采用密塞高压蒸汽法代替锥形瓶,加热氧化法测定总铬,缩短了分析时间,操作简便,分析结果精密度高、准确度好。     

热泵蒸发及其在浓缩垃圾渗滤液中应用的初探

在热泵蒸发过程中,二次蒸汽压缩比是个至关重要的参数,它直接关系到热泵蒸发的经济程度。对热泵蒸发中的传热过程及可利用的余热作了全面分析。最后对热泵蒸发在浓缩垃圾渗滤液中的应用进行了探讨。     

测定水中总氮的消解方法

废水中总氮测定的预处理一般采用经典的压力蒸汽灭菌器消解,其缺点是消解时间较长、操作较为繁锁。经多次试验并查阅了相关资料,可以用COD消解仪、电热恒温干燥箱和微波炉代替压力蒸汽灭菌器进行消解。在保证测量准确性和精度的前提下,可以节约时间、简化操作步骤,提高工作效率。     

System dynamics modelling of hybrid renewable energy systems and combined heating and power generator

The role of energy in the present world is critical in terms of both economical development and environmental impact. Renewable energy sources are considered essential in addressing these challenges. As a result, a growing number of organisations have been adopting hybrid renewable energy system (HRES) to reduce their environmental impact and sometimes take advantage of various incentives. When a HRES is being planned, the ability to model a HRES can provide an organisation with numerous benefits including the capability of optimising sub-systems, predicting performances and carrying out sensitivity analysis. In this paper, we present a comprehensive system dynamics model of HRES and combined heating and power (CHP) generator. Data from a manufacturing company using HRES and CHP generator are used to validate the model and discuss important findings. The results illustrate that the components of a HRES can have conflicting effects on cost and environmental benefits; thus, there is a need for an organisation to make trade-off decisions. The model can be a platform to further simulate and study the composition and operating strategies of organisations that are venturing to adopt new or additional HRESs.     

Reforming of CO2-containing natural gas with steam in AC gliding arc discharge for hydrogen production

In this study, a low-temperature gliding arc discharge system was used to investigate the effects of steam content and operational parameters, i.e. total feed flow rate, applied voltage, and input frequency, on the reforming performance of CO₂-containing natural gas. The addition of steam less than 10% was found to enhance both selectivities for hydrogen and carbon monoxide with a significant reduction of power consumptions. The highest hydrogen selectivity and yield with the lowest power consumptions were achieved at a steam content of 10 mol%, a total feed flow rate of 100 cm³/min (corresponding to a very short residence time of 1.37 s), an applied voltage of 13.5 kV and an input frequency of 300 Hz. Under these optimum conditions, the oxidative dehydrogenation reactions to produce hydrogen were dominant with the minimum activities of all undesired reactions of cracking and coupling. Both of the short residence time (1.37 s) with a low bulk temperature (lower than 200°C) in the plasma zone under atmospheric pressure, indicate that the studied plasma reactor (gliding arc system) is superior to conventional catalytic reactors for reforming of natural gas.     

基于反赋权与MBCT-SR多维云模型算法岩爆预测研究

基于岩爆事故的模糊性与随机性特征,为解决在当前岩爆烈度等级预测研究中,通过正向云发生器经验式计算多维云模型特征值进而导致预测结果主观性较强的问题.本文选取应力比Ts=σθ/σt、岩石脆性指数B=σc/σt以及弹性应变储能指数Wet作为评价指标,结合机器学习理论,采用多维逆向MBCT-SR云发生器算法对岩爆等级进行预测,...     

合成氯蒸汽发生器泄漏分析

本文针对某化肥厂合成氨装置的蒸汽发生器发生泄漏的原因进行了分析。该设备的材质为SA336F22（相当于国内2．25Cr-1Mo）,属于高温高压临氢设备,出现了垂直于焊缝方向的横向裂纹．经分析这些裂纹主要是氢浓度过高而引起的氢致延迟裂纹,并结合实际的情况提出了合适的返修措施。     

燃油锅炉房的灭火系统

根据燃料特性及工艺特点,阐述了蒸汽灭火系统、水喷雾灭火系统、干粉灭火系统和泡沫灭火系统在燃油锅炉房中的应用条件、主要设计参数及与通风排烟系统的关系。