共查询到20条相似文献,搜索用时 679 毫秒
1.
2.
对废脱硫剂的形成过程进行了概述 ,分析了废脱硫剂的组成 ,介绍了废脱硫剂中单质硫和有机硫的理化性质、分析测定及回收方法 ,对国内外处理废脱硫剂方法进行了简要的概述 ,提出了回收废脱硫剂中单质硫和有机硫的方法以及恢复其脱硫能力的几种可行途径 相似文献
3.
4.
5.
6.
1900年以来,美国主要硫源供应经历了三个阶段,第一阶段(1970年以前)以Frasch硫为主,以硫铁矿硫和各种回收硫为辅;第二阶段(1970~2000年)以Frasch硫和油气回收硫磺为主,有色金属冶炼回收硫、硫铁矿硫为辅;第三阶段(2001年至今)以油气回收硫磺为主,只有少量的有色金属冶炼回收硫。目前美国国内硫资源中,有色金属冶炼生产的副产品硫酸硫份额仅占全部硫资源的不足7%,其他均来自石油天然气回收硫磺。 相似文献
7.
8.
9.
本文提出一份有关控制或回收从铜、铅、锌初次加工冶炼厂排放的硫氧化物的文献评论。内容包括:冶炼厂排放物控制问题及硫氧化物回收的历史;各种冶炼过程硫氧化物排放物的来源;冶炼过程工艺;硫氧化物回收方法;用于硫氧化物回收过程的气体净化方法;可影响硫氧化物回收的新冶炼工艺;防止硫氧化物产生的湿法冶炼工艺过程。强调了导致生产富集的二氧化硫气流并因此而改进了回收的经济性的冶炼工艺的发展工作。本文包括一份范围广泛的分类书目提要。 相似文献
10.
煤化工硫回收技术比较 总被引:1,自引:0,他引:1
<正>对于煤化工装置净化系统产生的酸性气,国内企业一般采用超级克劳斯工艺处理进行硫回收。超级/超优克劳斯硫回收技术在天然气和炼油领域已得到广泛应用,但应用在煤化工领域存在硫回收规模偏小、酸性气中硫含量偏低、组成复杂、硫含量不稳定等问题,造成超级/超优克劳斯硫回收技术在煤化工行业应用中普遍出现排放的尾气中硫含量超标现象。近年来,国内许多单位对硫回收工艺做了大量研究工作,并取得了一定 相似文献
11.
王景儒 《化学推进剂与高分子材料》2003,1(6):16-18
六氟化硫是一种绝缘性能和灭弧性能良好的气体 ,也是一种具有累积效应的温室气体。回收含六氟化硫分解气的六氟化硫气体 ,既有经济效益 ,又有环境效益。介绍六氟化硫分解气的种类、性质及湿式、干式 2种回收处理方法 相似文献
12.
MCRC硫磺回收装置设备技术介绍 总被引:1,自引:0,他引:1
对我国引进的第一套 MCRC(Mineral and Chemical Resource Co.)硫磺回收及尾气处理装置中设备的布置、结构形式和选材等方面作了较详细的介绍,并对某些结构提出了改进意见。 相似文献
13.
The permeations of helium, hydrogen, methane, ethylene, nitrogen, and argon, and helium–methane, nitrogen–ethylene, oxygen–nitrogen, and sulfur dioxide–nitrogen mixtures have been studied using freeze-dried porous cellulose acetate reverse osmosis membranes. The results illustrate the existence of mobile and immobile sorbed layers and the governing influence of surface flow in gas-phase reverse osmosis separations. Preshrunk freeze-dried porous cellulose acetate membranes seem to offer a practical means of utilizing the reverse osmosis process for recovering helium from natural gas and separating sulfur dioxide from flue gases. 相似文献
14.
热管蒸汽发生器在硫酸生产中的应用 总被引:2,自引:0,他引:2
介绍了用热管蒸汽发生器(废热锅炉)回收高温SO2气体的余热,产生中压蒸汽,以代替现有废热锅炉的原理和特点,以及两种不同结构形式的热管蒸汽发生器分别在硫磺制酸和硫铁矿制酸系统中的运行情况。 相似文献
15.
Fluid bed retorting of oil sands is a viable method of extracting oil from mined oil sands. The process is based on a direct heating concept in which one vessel is utilized for the pyrolysis and vaporization of the bitumen contained in the oil sand and for the burning of the residuals which remain with the sand. Experimental results show that a significantly upgraded liquid hydrocarbon product can be obtained. Oil yields can exceed eighty per cent of the bitumen present in the feed material. The sulfur content of the produced oil is reduced. Gas produced can have a significant heating value and contains sulfur mainly in the form of hydrogen sulfide. Refluxing of the overhead product increases liquid yields and reduces the sulfur content of the oil. Water injection and the use of enriched air has a beneficial effect on the process. Thermal efficiencies in excess of eighty per cent can be achieved without recovering the heat from the expended sand. 相似文献
16.
Fluid bed retorting of oil sands is a viable method of extracting oil from mined oil sands. The process is based on a direct heating concept in which one vessel is utilized for the pyrolysis and vaporization of the bitumen contained in the oil sand and for the burning of the residuals which remain with the sand. Experimental results show that a significantly upgraded liquid hydrocarbon product can be obtained. Oil yields can exceed eighty per cent of the bitumen present in the feed material. The sulfur content of the produced oil is reduced. Gas produced can have a significant heating value and contains sulfur mainly in the form of hydrogen sulfide. Refluxing of the overhead product increases liquid yields and reduces the sulfur content of the oil. Water injection and the use of enriched air has a beneficial effect on the process. Thermal efficiencies in excess of eighty per cent can be achieved without recovering the heat from the expended sand. 相似文献
17.
提出了我国金属阳极修复产业的现状及存在问题。根据试验数据提出了修复工艺的选择、去除旧涂层的方法、重涂工艺及涂层配方、加强生产现场质量检测、控制等方面的改进意见及应用于各种钛阳极的修复再生。 相似文献
18.
19.
20.
论述世界硫磺生产与消费情况;世界硫酸消费和对硫的需求预测;世界硫磺贸易现状和价格变化及预测;我国硫资源生产概况及进口硫磺情况;我国对硫磺需求的预测。我国硫磺对外依存度将达约60%,今后全球硫磺产量增长速度大于消费速度,仍将保持供过于求的局面。 相似文献