共查询到20条相似文献,搜索用时 15 毫秒
1.
超级克劳斯工艺是一项先进、成熟的硫磺回收技术,具有流程简单、操作灵活、安全可靠、运行费用低、应用规模不限、使用范围广、硫回收率高等优点,成为近20年来发展最快的硫磺回收工艺技术之一。在新建硫磺回收装置及原有老装置改造方面,超级克劳斯硫磺回收工艺都有广阔的应用前景。介绍了超级克劳斯及传统克劳斯、超优克劳斯硫磺回收工艺原理,叙述了超级克劳斯工艺的发展,并对该工艺在国内相关领域的应用前景进行展望。 相似文献
2.
超优克劳斯硫回收工艺是在传统克劳斯工艺基础上开发的硫回收工艺,在硫回收率、尾气达标、装置投资费用等方面更具优势。介绍了超优克劳斯硫回收的工艺原理、技术特点以及国内装置的建设概况;将超优克劳斯与其他硫横回收工艺的相对投资和效益进行了比较。结果表明,该工艺不仅适用于现有克劳斯装置的技术改造,也适用于新建装置;在不改变克劳斯工艺基本特点及没有进一步尾气处理的情况下,可将硫回收率提高到99.4%以上。 相似文献
3.
塔中某处理厂硫磺回收采用分流法低温克劳斯工艺,通过一级常规克劳斯和三级低温克劳斯反应完成单质硫的回收和尾气的处理,保证硫收率达到99.25%以上及尾气排放合格。文中对装置的工艺特点进行简单介绍,并对生产过程中遇到的问题与应对措施进行分析和说明,充分证明了CPS硫磺回收工艺非常适合该处理厂的实际情况。 相似文献
4.
5.
6.
7.
介绍了克劳斯和超级克劳斯工艺的特点,从工艺流程、关键设备的选择和自动控制等方面介绍了超级克劳斯技术在硫回收装置中的应用。 相似文献
8.
介绍了三级克劳斯、超级克劳斯和超优克劳斯硫磺回收装置的工艺流程、布置方案和工程实例;提出了工程设计中应注意的问题。 相似文献
9.
实验室通过对低温Claus尾气加氢催化剂动力学研究,考察了Claus尾气含硫化合物加氢反应的规律。通过对影响Claus尾气加氢催化剂性能的主要因素分析,阐述了过程气中烃类反应导致的催化剂积炭速率与烃含量、催化剂使用温度、催化剂运转时间的关系;通过使用XRD、SEM等技术手段,对热老化前后Claus尾气加氢催化剂晶相、金属分散、孔结构等性质进行测试和表征。从不同角度研究、探讨影响催化剂性能的因素,对于低温Claus尾气加氢催化剂及其配套工艺的开发和应用具有指导意义。 相似文献
10.
Bahman ZareNezhad 《Journal of Industrial and Engineering Chemistry》2009,15(2):143-147
In the processing of sour natural gas, the conversion of hydrogen sulfide into elemental sulfur is often carried out using the modified Claus sulfur recovery process.In this work, the most important influencing parameters regarding the selection of the proper catalysts for Claus SRU (sulfur recovery unit) converters are technically evaluated. It is shown that the pore size and pore size distribution, size, shape, bulk density, mechanical strength and attrition resistance of the catalyst particles are the main parameters which should be considered in selection of Claus catalysts. The general classification of Claus catalysts and the most important specifications required for proper selection of converter catalysts are also presented. 相似文献
11.
12.
13.
为验证国产化超优克劳斯技术的可行性,对工艺路线、运行效率、转化率、能耗和产品质量等指标在煤化工的应用情况进行分析。结果表明,该技术路线成熟可靠,催化剂性能优越,能满足煤化工的生产需要。 相似文献
14.
O. I. Platonov L. Sh. Tsemekhman P. N. Kalinkin O. N. Kovalenko M. V. Babkin 《Catalysis in Industry》2009,1(3):220-223
Methodical principles of catalyst activity monitoring in Claus reactors based on the determination of the rate constant of
the reaction of hydrogen sulfide conversion at catalyst temperatures lower than 280°C are discussed. The procedure is justified
by data from laboratory experiments (in the range of concentrations [H2S]0 = 1.5–7 vol %), pilot tests ([H2S]0 = 0.8–37.4 vol %) of an alumina-based catalyst AO-NKZ-2 produced by ZAO Novomichurinsk Catalyst Plant, and by the results
of its test in the Claus reactor of the department for coke oven gas purification of by-product-coke plant at the OAO Magnitogorsk
Integrated Iron-and-Steel Works. The procedure is recommended for reliable monitoring of the current activity and estimation
of the residual life of catalysts in the Claus industrial reactors operating under conditions of substantial variations in
the composition of the process gas, as well as for comparative estimates of catalyst activity in the Claus process. 相似文献
15.
介绍了湿式氧化法和固定床催化氧化法硫回收技术以及超级克劳斯、低温克劳斯、SCOT、RAR、WSA、Shell-Paques等尾气处理技术的工艺流程和技术特点;分析了上述硫回收技术及尾气处理技术的总硫回收率、相对投资费用、相对运行费用等经济技术指标。 相似文献
16.
17.
18.
19.
介绍用甲烷(天然气)直接还原技术使冶炼烟气中SO2生成元素硫的工艺研究。SO2直接还原法分2 步:在高温下用甲烷将部分SO2还原成S和H2S,然后未反应的SO2和H2S发生Claus转化反应生成S。研究发现, 在工业装置中还原反应器宜采用分批甲烷法进料,以避免烟灰的生成;另需严格控制各种物料的相对比例,以确保位于Claus转化系列的硫冷凝器排出的尾气中的H2S/SO2为2,从而优化工艺性能。另外试验发现,在不同的停留时间下,SO2转化率与反应温度的关系曲线变化趋势是相反的,因此必须根据具体的现场条件选择停留时间。Siirtec Nigi公司和Albera硫研究有限责任公司联合开发了一种CH4/SO2还原/Claus/HCRTM工艺,其总硫回收率可达到99%以上。试验确定了一组有价值的化学工程数据,可用于该工艺的工业装置设计。 相似文献
20.
The main disadvantage of the Claus process is that by introducing air as oxidant a large volume of tail gas is produced. This must be treated to reduce atmospheric emissions of sulfur-containing gases. The costs of the tail-gas unit are a significant fraction of the total capital and operating costs for sulfur recovery. A new process uses thermal decomposition of hydrogen sulfide in the presence of carbon dioxide instead of air oxidation. The products of this reaction are hydrogen, carbon monoxide, elemental sulfur, water vapor and carbonyl sulfide. Carbonyl sulfide is easily converted to H2S and C02 by liquid- or vapor-phase hydrolysis. Unreacted H2S and C02 are recovered by absorption and recycled to the reactor. Since no air is introduced, there is no tail gas and the tail-gas unit is eliminated, giving a substantial reduction in capital investment. The concentrations of sulfur-containing gases in the product streams depend only on the operation of the absorber and stripper units and can be controlled to very low levels by increasing stripper boil-up. Process operating costs depend on the level of sulfur recovery required and can also be much lower than those of the modified Claus Process.
The process chemistry depends on a shift in the equilibrium of H2S decomposition caused by reaction of hydrogen with C02 by the reverse of the water-gas-shift reaction. Catalysts for this chemistry have been identified. Reactor conversion is further improved by rapid cooling of the reactor effluent gas. Other aspects of process design and operation confer further advantages with respect to the Claus process; however, the process equipment used is similar to that used in a Claus plant. Retrofit of existing plant to the new technology can therefore be considered. 相似文献
The process chemistry depends on a shift in the equilibrium of H2S decomposition caused by reaction of hydrogen with C02 by the reverse of the water-gas-shift reaction. Catalysts for this chemistry have been identified. Reactor conversion is further improved by rapid cooling of the reactor effluent gas. Other aspects of process design and operation confer further advantages with respect to the Claus process; however, the process equipment used is similar to that used in a Claus plant. Retrofit of existing plant to the new technology can therefore be considered. 相似文献