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小氮肥厂副产的硫磺,只要操作得法,其纯度可达98%以上。如何进行回收,本文介绍了三个方面的经验:a.煮硫节省蒸汽的途径;b.对夹套阀门的改进;c.对回收流程的改进。 相似文献
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何光涛 《中国石油和化工标准与质量》2012,33(10)
本文从工艺、催化剂等几方面对影响硫磺回收装置硫回收率的主要因素进行了总结,找出降低硫回收率的主要原因并加以解决,从而减少环境污染. 相似文献
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如何提高硫磺回收装置总硫回收率 总被引:2,自引:0,他引:2
何光涛 《中国石油和化工标准与质量》2012,(9):47
本文从工艺、催化剂等几方面对影响硫磺回收装置硫回收率的主要因素进行了总结,找出降低硫回收率的主要原因并加以解决,从而减少环境污染。 相似文献
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本文介绍了用连续熔硫器处理脱除硫化氢气体工艺中产生的硫泡沫,将熔融硫与清液分离开来,既可将脱硫液循环使用,又能获得纯度达99.5%的磺硫。减少了环境污染,实现了资源的综合利用。 相似文献
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介绍改良的Claus工艺加Clinsulf工艺的硫回收系统的工艺流程,总结系统的运行状况,分析系统运行不正常的原因,提出改造措施,经过改造后系统运行效果良好. 相似文献
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克劳斯硫回收系统通用流程模拟软件CLAUS 总被引:2,自引:0,他引:2
介绍了克劳斯硫回收系统通用流程模拟软件-CLAUS,通过对实际流程进行操作型与设计型的模拟计算,证明该软件符合生产实际,可以用于工程设计和实际工况的模拟分析与优化。 相似文献
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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
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吉化公司江南炼油厂针对糠醛精制装置工艺落后、能耗高的状况进行了改造,以填料塔代替转盘塔;废液回收系统采用双效蒸发;精、废液加热炉新上空气预热系统,提高了产品质量,降低了装置能耗,经济效益显著。 相似文献
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LO-CAT硫回收工艺技术及其应用前景 总被引:1,自引:0,他引:1
LO-CAT工艺是由美国 ARI技术公司开发的一种环境保护型硫回收新技术,被广泛应用于天然气、煤气、合成气、炼油厂燃气、二氧化碳气、酸性污水排放气、加工工业排放物等的硫回收和尾气处理工艺过程中,硫化氢的硫脱除率可以达到99.9%以上。介绍了LO-CAT硫磺回收工艺的基本原理、工艺流程、技术特点及其在国内的应用前景。 相似文献