关于制氧机经济运行的探讨

总厂制氧系统的气体发生量和使用量之间存在差值。由于氧气发生量是按制氧机组容量决定的,而使用量是随各厂生产量的变化而有较大的波动,因此氧气放散量有时很多,会造成很大浪费。本文就投产后在调整制氧机运行,为降低氧气放散量所做的努力和今后对制氧机经济运行的设想作一介绍。     

35000m~3/h制氧机组经济运行分析

对KDON-35000/40600型制氧机组经济运行作了阐述,提高有效能的利用率,降低氧气放散率,从而实现降本增效。     

浅谈制氧机组经济运行的措施

主要从降低制氧机能耗、降低氧气放散率和提高制氧机运转周期等方面,谈谈如何保证制氧机的经济运行。     

制氧机组群经济运行研究

利用一元线性回归分析得到钢产量与氧氮需求量的关系,再将氧气产量与空压机电耗,通过线性规划建立数学模型,确定制氧机组运行组合,用氮气需求量确定氮压机运行组合。以此作为制氧机组基本运行状态。在此基础上,进一步通过节能操作方式、一整套控制放散措施,实现了制氧机组群的经济运行。     

降低氧气放散率的控制措施

介绍了酒钢公司制氧机规模及用气状况,根据放散率高的现状分析存在的问题,采取了一系列措施,使氧气放散率逐年下降。同时也提出了还存在的遗留问题。     

宝钢分公司控制氧气放散率的实践

介绍了宝钢分公司在氧气放散率控制方面的探索历程,并简略介绍了具有宝钢特点的增加氧气可调用户、氧气长距离输送、充分利用能源中心信息沟通、优化系统定修期间制氧机临时停车模式等综合控制技术和方法.     

第一炼钢厂氧气用量估算

一、前言公司各个用氧户需要多少氧气?第一炼钢厂需要多少氧气?由于未曾系统地作过实际标定和科学计算,因而尚不能够做出准确的回答。显然,这给公司合理调配氧气用量带来困难。由于制氧机的氧气产量是稳定的,而用氧户的用氧量则是按工艺要求时断时续或者要进行调量操作。所以不可避免地造成有时氧气过剩而被迫放散,或者氧气供不应求。要减少氧气的放散量最根本的措施是组织全公司均衡生产,有足够大的储氧罐和一定数量的缓冲用户等。但是实施这些措施则     

降低氧气厂氧气放散率的研究

阐述了制约制氧厂氧气放散率的各种因素,分析了公司主要用户生产特点和能耗指标,及采取的相关措施。通过错峰生产及调整高炉富氧量,平衡氧气动态需求量,对机组变负荷范围进行科学论证,找出机组变负荷范围能力,对制氧机人工快速变负荷操作,并对液化膨胀机膨胀端、增压端叶轮进行国产化改造,实现变模式操作。最终达到了降低氧气放散率的目的,达到了降本增效的效果。     

达钢5~#15000空分手动调整负荷节能降耗的生产实践

随着达钢生产规模的不断扩大,氧气供需关系的平衡越来越难,制氧机组启动过程较长、能耗浪费大。在保证公司用氧用氮的前提下,通过变负荷操作进一步降低放散率,灵活的调整生产负荷就成为了不二选择。     

柳钢氧气平衡的实践

结合钢铁冶炼系统的生产特点,从制氧机组设备选型、配套设施、生产管理和设备管理上等方面总结做好柳钢氧气平衡,减少氧气放空,提高氧气利用率的措施。     

熔炼次数对M17返回料合金成分、组织和性能的影响

实验结果表明,M17铸造高温合金(%:0.16C、8.79Cr、5.79A1、4.93Ti、3.29Mo、15.20Co、0.78V、0.015B、0.073Zr、0.002S、0.001P、0.001 1O、0.001 0N)经25 kg真空感应炉返回重熔后,Si含量随重熔次数的增加而略有增加,合金中主要元素和其它杂质元素S、P、H的含量变化不大,而氧、氮略有增加;合金中初生碳化物由新合金中的草书体逐渐向返回合金块状转变,初生碳化物的遗传性堵塞合金凝固时的补缩通道,使返回料合金的疏松倾向增大,高温塑性下降较大。     

China's Major Non-ferrous Metals Imports & Exports

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Zinc Production by Province in 2014

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80% of Chinese Firms Purchasing Overseas Mines Ended up in the Red

<正>Minmetals Resources acquired the world’s largest copper mine under construction for USD5.85 billion.One after another,listed companies Jien Nickle,China Molybdenum and Chihong Zinc and Germanium raised money to get involved in overseas mining projects…SOEs and private enterprises are engaged in a frenzy of overseas mine purchasing.A reporter with Economic     

Copper Processing Profit Dropped Sharply,Copper Consumption Will Face Impact in the Second Half of the Year

正Judging from China’s copper consumption field,the biggest consumption unit is electric power,which accounts for 47%of total consumption;it is followed by light industry sector,including household electrical appliance,machinery,durable goods and hardware etc,which accounts for 22%of total consumption;followed by transportation field,     

Central Geological Prospecting Fund Newly Added 16.47 Million Tonnes of Bauxite in 2013

正In 2013,the Central Geological Prospecting Fund(CGPF)Project newly discovered 15 ore fields,including 3 large above ore fields,and 5medium sized ore fields.The reporter learned from the recently published"Annual Report of Central Geological Prospecting Fund Project(2013)"that,from 2006 to 2013 the CGPF     

Manufacturers of Copper Tube for Central Air Conditioner Use Face Mounting Pressure in the Final Quarter of the Year

正This year,the investment growth rate of real estate industry continued to slow down,sold area of commercial housing also dropped significantly,which brought huge pressure to the domestic air conditioning manufactures.In the first half of the year,by relying on high growth in national financial expenditure,along with investment in public infrastructure     

Xinjiang Ranks No.1 in Production of Primary Aluminum in China

正Kang Yi,Honorary Chairman of China Nonferrous Metals Industry Association,said recently at the Forum on Development of the Non-ferrous Metals Industry in Central and Western China held in Zhengzhou that,as more and more electrolytic aluminum factories in Xinjiang came into operation,the electrolytic aluminum output of Xinjiang had reached2,275,000 tons in the first 7 months this year,     

Shenhuo Coal Industry and Electricity Power Completed800,000 t/a Aluminum Project in Xinjiang

正"Xinjiang project has been completed according to schedule,but total completion and total start of production are two different concepts,after completion it still needs a gradual process of reaching production target."On the morning of November 3,Shenhuo Coal Industry and Electricity Power told investors the above statement on the investor interaction platform.     

Guangdong Metal Transaction Center has Become the Second Largest Precious Metal Transaction Platform Nationwide

正The reporter learned from Guangdong Province Precious Metal Transaction Center that in 2013the Center maintained healthy development momentum,and had become the second largest precious metal transaction platform in China in terms of market size;currently Guangdong is quickening steps of financial innovation for the Center,aiming to build a transaction center with international core competitiveness.