丹麦托普索低压装置合成甲醇的影响因素

丹麦托普索低压合成甲醇装置合成甲醇中各因素的优化控制,对提高粗醇产量,改善粗醇质量,节省甲醇精馏的投入成本,提升企业效益起着很大作用。探讨了影响甲醇合成反应的诸多因素,如温度、压力、空速、碳氢比、惰性气体含量、入塔甲醇含量等。生产结果表明,合成反应温度控制为230℃左右,碳氢比控制为2.05左右,严格控制原料气品质,根据惰性气体含量调整惰性气体系统放空阀开度,能够有效抑制副反应的生成,延长催化剂的使用寿命,实现合成装置的稳定长周期运行。     

MK-121型甲醇合成催化剂还原研究

托普索MK-121型甲醇合成催化剂为铜系催化剂,开车前呈氧化态,无活性,必须首先还原成金属铜,才能在反应中起到催化作用。介绍了60万t/a甲醇合成装置工艺流程、MK-121型甲醇合成催化剂的组成,重点讲述了升温及还原过程,通过对比实际化学出水量与理论出水量,观察合成塔进出口氢气浓度与温度变化、过程中存在的测量误差以及水量损失等因素,得出催化剂已被完全还原,为后期装置长、满、优、高效生产奠定了基础。     

含氧代用燃料合成技术现状

甲醇及其衍生物二甲醚，均具有优良的燃烧和动力特性及协调的环境特性。甲醇合成工艺均向(超)大型化方向发展。气相甲醇脱水制二甲醚，流程长，但工艺成熟；合成气直接制二甲醚，技术新颖，但尚处于发展阶段。     

焦炉煤气制取甲醇工艺探讨

以焦炉煤气为原料，压缩至2．1MPa后进入精脱硫装置，将气体中的总硫脱至0．1ppm以下。焦炉气中甲烷含量达22.4％，采用纯氧催化部分氧化转化工艺，将气体中甲烷及少量多碳烃转化为合成甲醇用的一氧化碳和氢；经压缩进入甲醇合成装置。甲醇合成采用5．3MP。低压合成技术，精馏采用3塔流程。     

基于焦炉煤气制甲醇的工艺技术分析

焦炉煤气制甲醇技术具有环保、节能优点,能使有毒的焦炉煤气变废为宝,在提倡建设两型社会的今天,该技术有着极其广阔的应用空间及利用价值。该文简要论述了基于焦炉煤气制甲醇的工艺技术的整体流程,对甲醇的合成以及精馏过程进行了深入分析,以供参考与借鉴。     

关于煤制甲醇工艺设备及能耗的几点分析

以煤炭为原料制备甲醇是目前甲醇合成技术的主流路线,文章在煤制甲醇工业的发展的基础上,分析以水煤浆加压气化工艺及Mega联合甲醇合成技术为例,介绍了此工艺条件下煤气化制备甲醇的工程设备,并简要分析了各工序的能量损耗。     

二甲醚的制备技术及其多种应用

介绍了包括甲醇脱水法，合成气直接合成法和CO2加氢直接合成法制二甲醚（DME）的几种生产方法，以及DME合成技术的最新发展，并对DME下游产品的开发研究及其各种应用进行了论述。     

煤制甲醇工艺设备及能耗的几点分析

目前甲醇较成熟的制备工艺主要是以煤炭为原料,经过煤气化、灰水处理、变换工序、净化以及甲醇合成和精馏一系列的工序,是生产甲醇最主要的工艺路线。采用水煤浆加压气化替代传统甲醇制备工艺中的煤气化工序,并选择Mega联合甲醇合成技术作为优化工艺的参考,简单介绍了水煤浆加压气化制备甲醇工艺中煤气化的设备,并分析了各工序能耗情况。     

循环比对甲醇合成过程影响的计算分析

通过计算分析，探讨了循环比对甲醇合成过程的影响，以方便甲醇合成过程的设计与生产。     

C307型中低压甲醇催化剂及应用

催化剂是焦炉气合成甲醇中重要的物质,为了提高甲醇的产量和质量,催化剂的选择对于各厂家来说是很关键的。目前既经济又适用的是C307型中低压合成甲醇催化剂,该产品具有合适的外形、机械强度等优点,主要由铜、锌、铝的氧化物组成,活性优于国内外同类产品。     

Current situation and future trend of China rare earth luminescent material industry

<正>Rare earth luminescent material is one of the most important application sectors of rare earths.China enjoys the exceptional advantage to develop rare earth luminescent material for its abundant rare earth resources.After several decades'endeavor,China's rare earth luminescent material industry,headed by rare earth phosphor for lamp and LED and high efficient rare earth energy-saving light source,has been gradually developed into a scale industry.China has become a major production base of rare earth phosphor for lamps and rare earth     

China rare earth market review

正June 1~10,2014Rare earth market remained weak.Quoted price of rare earth products was similar to that in May.There was no sign of recovery in downstream market.The market of NdFeB magnetic materials and phosphor was depressed.Catalyst,polishing powder and ceramic industries remained inactive.Demand from downstream industry was soft.Consumers purchased on their needs.Suppliers had strong intention to sell.Prices of rare earth products     

Annual Report analysis of Chinese rare earth-related listed companies in 2013

<正>Chinese rare earth-related listed companies have published their 2013 annual reports.It can be understood from their reports that production and operation activities of Chinese rare earth-related companies were still heavily affected by macro economy and industrial policies.They basically followed the steps of national economy.In 2013,world economy recovered slowly but the economy     

Market opportunities and challenges for rare earth polishing powder

正1.Status of rare earth polishing powder Rare earth polishing powder with high content of cerium oxide began to replace iron oxide for glass polishing and became one of the key materials in glass polishing process since 1940.Compared with traditional iron oxide,rare earth polishing powder has many advantages,such as fast polishing rate,high polishing quality and long service life.It can achieve good surface quality and improve operation conditions.For example,in lens polishing,the polishing work that cerium     

Baotou Research Institute of Rare Earths developed a new RE alloy preparation technology

正Pyrometallurgy Laboratory of Baotou Research Institute of Rare Earths had independently developed a new preparation technology of rare earth alloy for NdFeB.The alloy can remarkably enhance the coercivity of NdFeB magnet but also evidently reduce the production cost of the magnet.The new master alloy was prepared in the kA pilot-scale electrolytic cell by the independent technology.The rare earth master alloy can be used as the raw material for NdFeB.Compared     

矿用防爆轴流对旋主要通风机叶片ANSYS模态分析及应用

高效节能矿用防爆对旋主要通风机的叶片是主要通风机运行的关键部件,叶片在运行时不断受到气流的作用力,从而使叶片产生振动,当叶片振动的频率与叶片的固有频率接近时,容易产生共振从而导致叶片的断裂。一旦叶片断裂时,对主要通风机的安全运行产生致命的影响,从而导致矿山、化工等企业发生重大事故,将会产生不可估量的损失。基于有限元分析软件ANSYS,对高效节能矿用防爆轴流对旋主要通风机叶片进行模态分析及产生对应的六阶模态频率,对主要通风机叶片的运行频率、固有频率及产生的共振问题进行了原理分析,并且解决了叶片频率共振的问题,从而为主要通风机叶片结构设计提供理论依据,并对主要通风机叶片的安全运行提供保障。     

2013 NdFeB export analysis

<正>China totally exported nearly 24,000 tonsof NdFeB products during 201 3,including 18,825 tons of permanent magnet,valued USD 1.34 billion at an average price of 71.4 USD/kg;3,277 tons of NdFeB magnetic powder,valued USD 1 01 million at an average price of 30.9 USD/kg;1,334 tons of strip casting ribbon,with total export value of USD 74million at an average price of 55.3 USD/kg;and 586     

Market and recycling of NiMH battery

<正>Market status and future trend of NiMH battery1.Global market of small NiMH battery Global market size of small NiMH batteries declined year on year since 2011.The trend will continue to 2018,at the rate of 5%to 10%annually.Demand for small NiMH batteries will be stable gradually.Many electrical apparatuses are powered by the built-in lithium battery today,which is the main reason for the shrunk market of small NiMH batteries.But,for some products,small NiMH     

China rare earth market review

正September 1-10,2014 Affected by the National Day holiday,rare earth transaction was stagnant and the market showed a weak steady state.As there was no good news for downstream market,some products with flat demand would likely rally slightly for some time to     

唐口煤矿深部复杂开采工作面瓦斯分源涌出规律研究

研究工作面瓦斯涌出规律对工作面瓦斯治理有重要意义。为了得到唐口煤矿深部3号煤层复杂开采条件下工作面回采时期瓦斯涌出时空演化规律,选取6304工作面作为对象,采用实测方法研究6304工作面瓦斯涌出规律。结果表明:6304工作面瓦斯涌出量为6.534 m³/min,其中煤壁占34.27%,落煤占29.62%,采空区占36.11%;沿工作面倾向由低到高,瓦斯浓度整体为上升趋势,其中1—76号架工作面瓦斯浓度小于0.20%,76—102号架瓦斯浓度上升明显,最大为0.387%;上隅角的后部采空区是工作面的瓦斯主要涌出源,上隅角1号测点瓦斯浓度0.78%,上隅角周边3号、5号、7号、8号、9号测点瓦斯浓度平均为0.643%;周期来压时,上隅角瓦斯相对平时较高。研究为针对性的瓦斯分源监控与灾害防治提供基础。