八一矿水煤浆厂的生产技术和实践

介绍了八一矿水煤浆厂水煤浆生产线的建设和改造过程 ,论述了利用浮选精煤滤饼制备高浓度水煤浆的生产工艺和技术 ;电厂等用户的使用结果表明 ,八一矿水煤浆厂生产的高浓度水煤浆代油或代煤粉燃烧后 ,锅炉热效率及烟气中的污染物排放量均能满足用户需要 ,生产成本降低 ,具有很好的经济、环境效益     

大同市水煤浆工业发展的现状与前景

论述了水煤浆对我国能源的重要性以及大同市发展水煤浆对全市乃至山西省调整产业结构和煤炭产品结构的意义 ,介绍了大同目前发展水煤浆的现状 ,年产 30 kt的水煤浆厂恢复生产 ,在建的 30 0 kt/a水煤浆厂将扩建为 1 Mt/a,水煤浆即将成为大同市的主要煤炭产品之一 ,大同市的煤炭产品结构也将从根本上得到改变。     

国家水煤浆工程技术研究中心主任詹隆在"国家水煤浆工程技术研究中心水煤浆工业生产技术培训基地”揭牌仪式上的讲话

各位领导、各位专家同志们 :　　今天 ,我们怀着喜悦的心情在这里举行国家水煤浆工程技术研究中心———水煤浆工业生产技术培训基地揭牌仪式 ,首先让我代表国家水煤浆中心向来自全国各地一直关心着水煤浆技术发展和多年从事水煤浆技术研究开发和生产应用的领导、专家们表示热烈的欢迎和衷心的感谢 !　　八一煤矿水煤浆厂是我国最早开始水煤浆制备技术研究的单位之一 ,也是最早生产出性能好、品质优的水煤浆工厂。八一煤矿水煤浆厂的制备工艺技术在全国最优 ,制浆制备全部立足国产 ,生产出的水煤浆经历过多种条件下如长距离运输 ,长时间贮存…     

250 kt/a水煤浆厂工业生产技术通过鉴定

20 0 0年 3月 6日 ,2 50ｋｔ/ａ水煤浆厂工业生产技术 ,在枣庄矿业 (集团 )公司八一煤矿选煤厂通过了由国家煤炭工业局委托加工利用协会主持的技术鉴定。该项目由八一煤矿选煤厂和国家水煤浆工程技术研究中心、中国矿业大学 (北京校区 )、北京煤炭设计院 (集团 )共同研制完成的。自 1998年投产以来生产出近 2 2 0ｋｔ水煤浆 ,经鉴定委员会现场测试和国内外成果的查新检索表明 :中国自己设计、采用国产设备、自己施工的 2 50ｋｔ/ａ水煤浆厂工艺先进、投资省和水煤浆质量稳定合格。(1)八一水煤浆厂生产的水煤浆产品质量达到 :　　浓度 :(6 7…     

加速建设水煤浆制备工程的途径

水煤浆研究开发已有20年了,从科学研究,生产试验走向工业生产应用,至今已建成几座年产25万t以上的水煤浆厂。推动水煤浆成为一种稳定性的能源,用以提高经济效益、社会效益和改善环境是发展水煤浆的宗旨。     

南海洁能燃料有限公司水煤浆制备厂的工艺设计特点及成浆性试验

着重介绍了作为国内目前最大的水煤浆厂——南海水煤浆制备厂的制浆工艺、成浆性及设计特点,为今后中国水煤浆厂发展大型化提出了借鉴。     

Smartpro控制系统在水煤浆厂中的应用

介绍了Smartpro分布式控制系统在水煤浆厂中的应用。Smartpro软件分为ConMaker软件和Facview软件,分别用于开发控制方案的开发平台和设计人机界面。整个系统分为监控管理层与现场控制层。实践证明,应用该系统可实现水煤浆厂自动控制,提高产品质量和生产效率,降低生产成本。     

粒度级配对混煤水煤浆浓度与黏度的影响

水煤浆浓度与黏度是衡量水煤浆性能的两个重要指标.粒度级配是影响水煤浆性能的关键因素,合适的粒度级配可提高水煤浆性能.以某水煤浆厂所用的精煤和分散剂为实验基础,研究了在该水煤浆厂常用的混配煤和两种常用的分散荆条件下,粒度级配和水煤浆浓度、黏度的关系,获得了使用不同分散剂时水煤浆性能最佳时所对应的粒度级配.     

中国水煤浆厂建设概况

介绍了国内外水煤浆厂的建设情况，着重讨论了中国水煤浆厂建设的特点及具有中国特色浮选精煤制浆工艺的优点，论述了当前中国水煤浆厂建设存在的问题及今后的发展思路。     

水煤浆技术综述

介绍了水煤浆技术发展概况、水煤浆的特性、制备方法，及水煤浆加压气化技术──德士古法在合成氨厂的应用情况。     

Emission control in the combustion of coal–water and organic coal–water fuels

Promising methods for decreasing anthropogenic emissions due to the combustion of coals of different ranks and coal–water fuel (CWF) and organic coal–water fuel (OCWF) slurries on their basis are considered. The maximum concentrations of the main anthropogenic emissions of sulfur, nitrogen, and carbon oxides (SO _x , NO _x , and CO _x ) formed upon the combustion of solid fuels in a powdered state and as the components of CWF and OCWF slurries were determined. The concentrations of the most hazardous oxides formed upon the combustion of coals of different ranks (brown and black coals) and CWF and OCWF slurries were compared. The experimental results substantiated the use of CWF and OCWF slurries for emission control in coal-burning power engineering. The addition of a combustible liquid component to a CWF slurry (the production of an OCWF slurry) makes it possible to ensure acceptable environmental and energy characteristics.     

Effect of coupling agent content on properties of composites made from polylactic acid and chrysanthemum waste

Chrysanthemum flower is among one of the highly sought after and widely planted flower crops, in particular for cultural and religious ceremonies. However, the chrysanthemum stem and stalk have little value and usually discard as by‐product waste from floristry. The objective of this research is to investigate the potential value of utilizing chrysanthemum stem and stalk as reinforcing fillers for thermoplastic composites. In this study, 2‐mm thick composite sheet containing predefined formulations of polylactic acid (PLA), chrysanthemum waste filler (CWF) ranging from 15 to 60 phr, and maleated polyethylene (MAPE) coupling agent up to 5 phr were prepared with the aid of Haake internal mixer and compression molding. The effect of MAPE loading on tensile, thermal, and morphological properties of PLA/CWF composites was investigated. The findings revealed that PLA/CWF composite attained improved tensile modulus compared to the neat PLA, and the tensile modulus increases with higher concentration of CWF. However, both tensile strength and elongation at break reduces with increase loading of CWF. Overall, PLA/CWF composites with MAPE shows better performance compared to those without MAPE, where an optimum strength of 21.8 MPa can be achieved with 60 phr CW and 3 phr MAPE. The measured tensile strength is comparable to alternatives natural fiber thermoplastic composites demonstrating its potential to be used in non‐structurally demanding application. J. VINYL ADDIT. TECHNOL., 26:10–16, 2020. © 2019 Society of Plastics Engineers     

Preparation and deodorizing performance of a novel air‐purifying material

Two kinds of water‐soluble metallophthalocyanine derivatives, binuclear phthalocyaninecobalt(II) (Co₂Pc₂) and binuclear phthalocyanineiron(III) (Fe₂Pc₂), were supported on cationic wool fibers (CWF) to obtain a novel air‐purifying material, binuclear metallophthalocyanine fibers (Mt₂Pc₂CWF), and the optimal supporting conditions were pH 5, 100°C, and 60 min. Mt₂Pc₂CWF could eliminate efficiently the malodors of methanthiol and hydrogen sulfide at room temperature by cata lytic oxidation reaction used oxygen in atmosphere as oxidant. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 102: 4378–4382, 2006     

Influence of the temperature dependence of the thermophysical properties of coal–water fuel on the conditions and characteristics of ignition

The results of an experimental study and mathematical simulation of the ignition of coal–water fuel (CWF) particles, the main thermophysical characteristics of which (thermal conductivity (λ), heat capacity (C), and density (ρ)) depend on temperature, are reported. Based on the results of the numerical study, the influence of changes in the thermophysical properties upon the heating of the main bed of fuel on the conditions and characteristics of its ignition was analyzed. The ignition delay times (t _i) of CWF particles were determined under the typical furnace conditions of boiler aggregates. As a result of the mathematical simulation of the process of CWF ignition, it was established that the temperature dependence of thermophysical characteristics can exert a considerable effect on the characteristics and conditions of ignition. In this case, it was found that the ignition of coal–water drops is possible under the conditions of their incomplete dehydration. A good agreement of the theoretical ignition delay times of the CWF particles and the experimental values of t _i was established.     

Conditions of utilization of coal mining and processing sludges as slurry fuel

The results of this study have shown that coal sludge can be used as slurry fuel (like coal-water fuel (CWF)) providing that its ash content does not exceed 30% and the amount in the fuel is at least 55%. The conventional CWF preparation technologies are inapplicable to the fabrication of water-sludge fuel; therefore, special technologies with allowance for the ash content, the particle size, and the water content of coal sludge are demanded.     

Ignition of the drops of coal–water fuel in a flow of air

The ignition of the drops of coal–water fuel (CWF) in a high-temperature gas (air) flow was experimentally studied. The conditions and fundamental characteristics of the ignition (ignition delay times) were found. The effects of a number of factors (drop sizes and ambient temperatures) on the conditions of ignition were examined. Based on the results of experiments, a physical model was formulated for the processes of thermal preparation and ignition of CWF drops. The experimental delay times of the ignition of CWFs were compared with the theoretical values (obtained with the use of a previously developed mathematical model).     

Rheology of coal-water slurries

The costs of preparation and burning of coal slurries, in particular, coal-water fuel (CWF), considerably exceed the cost of coal utilization according to the conventional technology. CWF technology projects suggest that additional expenditures will be compensated for by the profitability of their pipeline transport in the laminar regime. Energy consumptions for the preparation and pipeline or tanker transportations is determined to a considerable extent by the viscosity and stability of these slurries. Thus, the rheology of slurries has become a subject of comprehensive experimental study. The results of theoretical investigation of the rheology of concentrated slurries are reported. The theory adequately describes all of the experimental data relevant to the issue.     

粉煤灰包覆壳聚糖处理金属家具废水中铝离子的研究

利用粉煤灰包覆壳聚糖制成的复合物絮凝剂（CWF）,专门研究CWF对金属家具废水中的Al3＋离子的处理。通过正交试验,研究了原料配比、溶液的pH,吸附剂用量,搅拌时间、温度等因素对处理效果的影响。研究表明,用CWF处理金属家具废水铝离子的最佳温度为55℃、pH 6、CWF投加量为12 g/L、搅拌时间为80 min,而最佳壳聚糖质量分数为8%,Al3＋离子去除率可达93.19%,浊度去除率为85.71%。     

快速测定工业水煤浆粒度组成的方法

提出了一种快速测定工业水煤浆粒度组成的方法 ;工业生产证明 ,该方法所测结果与激光粒度分析仪所测结果吻合较好 ,能满足实际生产的需要。