工业和民用建筑中的建筑湿度控制与建筑干燥技术研究

在工业和民用建筑中,建筑湿度控制与建筑干燥技术是一个重要及日益受到关注的议题。本研究旨在探讨建筑湿度控制和建筑干燥技术的理论和实践。首先,我们深入梳理了建筑湿度控制的基本理论,并论述了湿度过高和过低对建筑物结构和人体健康的影响。接着,我们介绍了当前主流的建筑湿度控制技术及其优势和局限性。此外,本研究还研究了包括脱湿干燥机、干燥剂干燥法在内的各种建筑干燥技术,分析了它们在恶劣工况下的效能和适用范围。针对各种技术的特性,本文进一步提出了综合应用各类建筑湿度控制和干燥技术的策略,采用适合特定环境的技术组合,有效改善建筑内的湿度状况,保证建筑物的结构和使用者的健康。研究结果将有助于优化工业和民用建筑的湿度环境,提高建筑性能和居住舒适度。

天然气管道干燥技术

介绍了几种天然气管道常用的干燥方法,并进行了对比。重点介绍了目前国内常用的干空气干燥法和真空干燥法的基本原理、工艺流程和各自的优缺点,分析了影响干空气干燥法和真空干燥法的各种因素,提出了干燥合格的标准及注意事项。

天然气管道干燥技术综述

概述了目前天然气管道研究中采用的几种干燥技术方法以及这些方法在国内的应用情况,对国内干燥技术的应用状况做了对比。重点介绍了目前国内常用的干空气干燥法和真空干燥法的基本原理和各自的优缺点,分析了影响干空气干燥法和真空干燥法的各种因素。

探索天然气管道干燥技术的研究

在天然气输送的管道施工中,管道干燥是一项重要的工序之一。随着目前国内外对天然气的需求量越来越多,对于管道设计施工的要求也越来越高,其专业化和技术化的要求都提高很多,这也就越发显得管道干燥技术的重要性。

Liquid drying of BeO gelcast green bodies using ethanol as liquid desiccant

BeO gelcast green bodies were dried by liquid drying method with liquid desiccant ethanol.Effects of ethanol concentration,solids loading and aspect ratio of green body on the moisture and shrinkage of green bodies were studied through measuring mass and dimension.Additionally,liquid drying stress was analyzed and a model of the initial stage drying stress was established.The results show that higher ethanol concentration,lower solids loading and higher aspect ratio of gelcast green bodies increase the drying rate.Increasing the ethanol concentration decreases the shrinkage rate.Liquid drying stress is generated due to a non-uniform drying rate.During the process of liquid drying,the inner drying stress of the green body changes from compressive stress to tensile stress,while the outer drying stress changes from tensile stress to compressive stress.

Review:Resuspension of wall deposits in spray dryers

Wall deposition occurs in spray dryers when dried or partially dried particles contact and adhere to the walls during operation, thus reducing the yield of product collected. Wall deposits also present a product contamination risk and a fire or explosion risk when spray drying products that oxidize exothermically, such as milk powder. Re-entrainment is the resuspension of spray dryer wall deposits into the main gas stream for collection as product. Literature suggests that the process for re-entrainment of particles from spray dryer wall deposits is strongly dependent on particle size and gas velocity.

Cyclone as a Sugar Cane Bagasse Dryer

Drying of sugar cane bagasse was theoretically and experimentally studied ina cyclone. The experiments were carried out using hot air as drying agent. The influence of thecyclone conical part was studied. It was shown that the conical part has a great influence on theparticle residence time and, consequently, on moisture reduction. Experimental results were alikeindustrial ones. CFX 4.4 from AEA Technology was used to simulate some experiments. Simulated andexperimental results were close and showed that the presented model leads to a good prediction.

煤炭称样中应注意的问题

本文强调了煤样称量在化验中的作用，并通过各种试验发现称量结果的准确度与煤样的状态、称样方法和煤样所处的环境有很密切的关系，并通过工作经验和实验数据得到了正确的称量方法。