烘干磨常见故障分析及排除方法

在水泥生产过程中,物料粉磨是一个重要的工艺环节。采用干法粉磨工艺,对含有水分的物料需要经过烘干。物料的烘干和粉磨有两种方法:一种是采用单独的烘干设备,物料经过烘干后再行入磨;另一种是在粉磨过     

萤石粉烘干工艺优化的研究

萤石粉作为氟化工基础原料,其主要用于制取氢氟酸.氢氟酸生产所需萤石粉水分<0.1％,因此萤石粉在使用前需要经烘干炉烘干后方可使用.现有生产工艺存在烘干效率低、烘干成本高、尾气吸收效果差等缺点.通过采取自动化改造优化热风系统、尾气工艺优化等措施,实现达标排放.     

微波加热在毛条烘干中的应用研究

介绍了应用微波加热烘干毛条的基本原理,研究了微波干燥设备的烘干效率、节能效果及烘干效果,结果表明,微波加热可以应用于纺织印染行业,为微波加热在纺织印染行业的推广应用提供了研究基础。通过生产应用,在计算微波加热毛条烘干工艺参数时,微波烘干机的干燥效率可取1.1kg/kW﹒h,微波干燥后,毛条含水率均匀,颜色前后色差无变化,纤维的强度和手感得到改善,微波干燥节能效果,比射频烘干节能约20%。     

煤棒烘干技术改进的探讨

煤棒烘干技术对煤棒质量、炉况好坏以及最终产气量、消耗均产生直接影响。通过对目前普遍采用的高温烟气直接烘干、HGT型煤烘干塔连续烘干以及风干炉煤棒烘干技术进行对比，结合生产实际情况，确定采用风干炉煤棒烘干技术，以提高煤棒质量并进一步降低煤耗。     

连续性真空低温玉米烘干塔的研发及性能介绍

为了解决粮食的晾晒烘干及提高烘干后粮食品质的问题,"远弘干燥"对玉米烘干塔进行了技术与设备的资源整合,研发了性能更好,更加高效的连续性真空低温玉米烘干塔,并对其真空烘干塔系统组成、烘干工艺流程、热风塔内换热、真空冷凝余热利用、技术参数和经济性进行了介绍和分析。     

中卸烘干生料磨生产情况浅析

中卸烘干生料磨生产情况浅析王践山东省鲁南水泥厂（２７７５３１）１引言鲁南水泥厂生料制备系统采用ΦＯ３．５×１０ｍ中卸式烘干兼粉磨磨机。这种磨机可对物料起到冲击破碎和研磨作用，并可适应水分在５％以下的物料入磨，起一定的烘干作用。烘干磨系统包括物料和气体...     

水泥生产线生料制备工艺的选择

三条2 500 t/d新型干法水泥生产线的生料制备系统分别采用烘干管磨机系统、立磨系统、辊压机生料终粉磨系统,结果发现辊压机生料终粉磨系统的能耗最低,中卸烘干磨最高,立磨居中.立磨和辊压机终粉磨系统均具有系统简捷、操作方便、维护简单、易于管理等特点,但辊压机终粉磨系统的烘干能力比立磨弱.从节约和合理利用能源的角度考虑,在气候干燥、物料水分低的地区应优先选用辊压机生料终粉磨系统,其它地区则选用立磨系统.     

浅析陶瓷高湿坯体的干燥机理及模式

本文阐述了陶瓷高湿坯体干燥的发展状况及出现的问题和干燥机理．重点介绍了笔者公司的陶瓷高湿坯体的干燥模式,其主要包括快速烘干房和辊道多层快速干燥器。实践证明,采用快速烘干房进行干燥,生产效率明显提高,干燥周期由传统的一周多的时间缩短到24～48h,成品率达95％以上;采用辊道多层快速干燥器其干燥效果较为理想,干燥时间缩短...     

顺逆式循环流玉米低温烘干塔的产品介绍及性能分析

为了解决粮食的晾晒烘干问题,“远弘干燥”对玉米烘干塔进行了技术与设备的资源整合,研发了性能更好,更加高效的顺逆式循环流低温玉米烘干塔,并对其系统组成、烘干流程、热风循环流使用、余热利用、技术参数和经济性进行了介绍和分析。     

电石厂炭材烘干窑经济技术分析

对不同类型炭材烘干窑的生产能力和炭材破损率进行了比较,并对采用立式烘干窑替代卧式单筒及三筒烘干窑进行了经济技术分析。     

Quality evaluation of Panax notoginseng extract dried by different drying methods

Quality control still remains a big issue, affecting herbs, formulations, and even the practice of Traditional Chinese Medicine. A promising solution to the problem is to take advantage of innovative process techniques including alternative drying methods within the pharmaceutical processing. Nowadays, vacuum belt drying (VBD) has gained more and more importance in food and pharmaceutical processing. In this work, Panax notoginseng extract was made into powder by the gentle VBD as well as by classical spray drying (SD), freeze drying (FD), and vacuum drying (VD). Certain chemical and physical properties of the dried powders such as moisture content, drying time, porosity, density, saponins content, pH value and hydroxyl radicals scavenging activity were evaluated. The results showed the qualities of dried products were influenced to different extent by drying methods certainly. Vacuum belt drying was suggested to dry P. notoginseng extract for its high quality assurance of hygroscopic products and suitable for sticky or high viscous products.     

脲醛树脂喷雾干燥实验研究

研究了脲醛树脂乳液喷雾干燥过程工艺条件,探讨了热风温度,压缩空气压力,蠕动泵转速等因素对喷雾干燥过程的影响。从而得到粉末脲醛树脂产品,质量达国内引进装置生产的粉状脲醛树脂的质量指标,应用结果优于GB/T 14732-1993的各项指标。     

脲醛树脂乳液干燥成粉末的试验研究

进行了用惰性粒子流化床干燥器将脲醛树脂乳液干燥成粉末的试验研究，产出了品质好的干粉，得出了在试验条件下的干燥强度和热效率，并作了经济性评价。     

Refractance Window Dehydration Technology: A Novel Contact Drying Method

Refractance Window® (RW) system is a novel drying method for converting liquid foods and other related biomaterials into powders, flakes, or sheets with added value. In this system, purees or juices prepared from fruits, vegetables, or herbs dry in short times, typically 3-5 min, resulting in products with excellent color, vitamin, and antioxidant retention. The RW drying systems are simple and relatively inexpensive when compared with freeze drying, which usually needs large installations to be economical. In RW drying systems thermal energy is transferred from hot water to a film of puree or juice spread thinly on a plastic conveyor belt. These drying systems operate at atmospheric pressure and are used for commercial production of scrambled egg mix, avocado powder, high carotenoid-containing algae, herbal extracts and human nutrition supplements, and food ingredients, as well as dried fruits and vegetables. This article presents the principle of Refractance Window® drying and highlights some results that show its potential and how it compares with other dryers for processing fruits, vegetables, and other heat-sensitive products.     

高效干燥设备在无机盐生产中的应用

目前中国无机盐行业采用炕式烘干、箱式干燥、隧道窑干燥等传统干燥工艺及设备，能耗高，劳动强度大，环境污染严重，产品易被污染，质量不稳定。选用高效、密闭、连续的带式串闪蒸、桨叶式串闪蒸、双螺旋串盘式等二级干燥工艺及设备、链式层干机、组合式干燥机、旋转列管式干燥机及喷雾干燥工艺和设备等新型干燥设备，改造传统工艺及设备，提升无机盐生产中干燥装置水平，以达到节能降耗，提升产品质量水平之目的。     

Recent R&D on Drying Technology in Japan

This article presents the outlook of the energy situation in Japan and reviews the recent R&D on innovative drying technologies performed in Japan. The overview of drying includes fundamentals as well as industrial technologies. The topics considered are drying characteristics of several materials, drying of hard-to-handle powders, drying of coatings, drying-induced strain-stress problems, drying modeling, and drying of agricultural wastes for functional recycling and noble dryers. An appropriate combination of heating methods and dryer type can result in significant enhancement of efficiency, drying rate, and/or material quality. The final goal of this article to contribute to providing an idea for development and evaluation of precise drying systems with a high performance and an effect of energy saving in drying.     

Applying Spray Drying to Customized Powder Manufacture

Spray drying is an important continuous industrial process for drying pumpable liquid formulations irrespective of their heat sensitivity, rheology, solids content and processing rate. Furthermore spray drying has the capability through drying chamber design, plant layout and mode of operation to produce dried products of specific particulate size and morphology. These are important aspects when spray drying technology is applied to the needs of customized powder manufacture. There are many examples in industry where spray dried powders have to meet stringent specifications set by such factors as end-product powder quality standards dictated by global competition, dry raw material characteristics required for optimum downstream processing, and dry materials handling to comply with environmental, health and safety issues. Spray drying is no longer regarded just as a convective industrial drying concept, but also as an integral part of modern manufacturing practices applying powder technology. This paper r     

Recent R&D on Drying Technology in Japan

This article presents the outlook of the energy situation in Japan and reviews the recent R&D on innovative drying technologies performed in Japan. The overview of drying includes fundamentals as well as industrial technologies. The topics considered are drying characteristics of several materials, drying of hard-to-handle powders, drying of coatings, drying-induced strain-stress problems, drying modeling, and drying of agricultural wastes for functional recycling and noble dryers. An appropriate combination of heating methods and dryer type can result in significant enhancement of efficiency, drying rate, and/or material quality. The final goal of this article to contribute to providing an idea for development and evaluation of precise drying systems with a high performance and an effect of energy saving in drying.     

Trends in Microwave-Assisted Freeze Drying of Foods

Microwave-assisted freeze drying (MFD) can be accomplished in two distinct ways: freeze drying assisted concurrently with microwave application (MFD-1) and freeze drying and assisted microwave/vacuum microwave drying in two consecutive separate drying stages (MFD-2). MFD is a rapid dehydration technique that can be applied to certain foods, particularly to seafoods, solid soup, and fruits and vegetables. MFD involves much less drying time and energy consumption than conventional freeze-drying methods. Currently, this technology has been successfully used to dry many food materials and has potential in the food industry. Increasing concerns over product quality, energy savings, and production costs have motivated researchers and the industry to adopt MFD technologies. The advantages of MFD include shorter drying time, energy savings, improved product quality, and flexibility in producing a wide variety of dried products. However, current applications are limited to small categories of foods due to high startup costs and relatively complex technology compared to conventional freeze drying. This article presents a concise review of recent progress in MFD R&D and makes recommendations for future research to bridge the gap between laboratory research and industrial applications.     

用喷雾干燥方法制造具有指定特性的颗粒

Spray drying is an important continuous industrial process for drying pumpable liquid formulations irrespective of their heat sensitivity, rheology, solids content and processing rate. Furthermore spray drying has the capability through drying chamber design, plant layout and mode of operation to produce dried products of specific particulate size and morphology. These are important aspects when spray drying technology is applied to the needs of customized powder manufacture. There are many examples in industry where spray dried powders have to meet stringent specifications set by such factors as end-product powder quality standards dictated by global competition,dry raw material characteristics required for optimum downstream processing, and dry materials handling to comply with environmental, health and safety issues. Spray drying is no longer regarded just as a convective industrial drying concept, but also as an integral part of modern manufacturing practices applying powder technology. This paper reviews the aspects of spray dryer design and operation for consideration when customized powder manufacture is involved.