蓄热式热氧化器有机废气净化机理

对蓄热式热氧化器(RTO)有机废气净化机理,RTO设备运行过程中的蓄热过程和热力氧化过程进行了系统分析。指出需对热力氧化技术和关键设备进行理论分析与计算,并对装置结构进行改进,对工艺流程进行优化,以实现RTO装置最大化节能降耗。     

天然气净化厂尾气加氢催化剂认识与实践

目的 开发一种高性能的尾气加氢催化剂,以解决硫磺回收装置排放烟气中SO₂质量浓度超标的问题。方法 对天然气净化厂尾气处理装置加氢催化剂活性组分对加氢、水解和变换等主要化学反应的催化性能进行了研究。通过微反应和动态表征技术进行催化剂动力学研究,获取其加氢与水解反应的活化能与反应级数,从而提升催化剂性能。结果 研究结果表明,氢气吸附在钴钼加氢催化剂上后对SO₂加氢有一定的抑制作用,水吸附在催化剂上后对COS水解有很强的抑制和阻碍作用。依托催化剂活性组分和动力学研究结果,开发了一种加氢催化剂。结论 与镍钨和铁钼催化剂相比,该催化剂的SO₂与硫磺加氢性能、有机硫水解性能、CO变换性能均较好,适用于天然气净化厂与炼油厂的操作工况,可实现尾气处理装置排放烟气中SO₂质量浓度低于400 mg/m³的目标。     

Location of catalyst inlet points in reactors with moving catalyst bed

Translated from Khimiya i Tekhnologiya Topliv i Masel, No. 4, pp. 16–18, April, 1991.     

Development of a thermostable catalyst coating for laminar reactors

Translated from Khimicheskoe i Neftyanoe Mashinostroenie, No. 2, ppT 14–15, February, 1988.     

Procedure for integrated study of properties of catalyst coatings

Conclusions The combination of all of these methods for the investigation of mechanical and catalytic properties of catalytic coatings will give rather complete information for the development of scientifically based technology of catalyst coating preparation, and also for the design of catalyst-plate reactors for treating tail gas to remove organic impurities. Translated fromKhimiya i Tekhnologiya Topliv i Masel, No. 3, pp. 42–43, May–June, 1997.     

Contact equipment for mass-transfer reactors in oil and gas processing plants

The scientists in the Department of Oil and Gas Processing Equipment have been actively involved in the development, investigation, and industrial introduction of contact equipment for mass-transfer reactors for more than 40 years. The first studies in this area were conducted at the beginning of the 1950s by I. A. Aleksandrov and Yu. K. Molokanov under the direction of Professor A. I. Skoblo. Translated fromKhimiya i Tekhnologiya Topliv i Masel, No. 2, pp. 28 – 33, March – April, 2000.     

Maxcel 727克劳斯催化剂在高含硫天然气净化厂的应用

针对Porocel公司开发的氧化铝基克劳斯催化剂Maxcel 727,介绍了催化剂的特点和开工情况,收集了催化剂在普光天然气净化厂硫磺回收装置8年运行过程中的相关参数,并对其使用情况进行了分析,总结出了稳定催化剂运行的工艺措施,主要包括科学装填、稳定脱硫单元操作及优化克劳斯反应炉配风等操作。     

聚丙烯主催化剂活性控制

简要叙述了聚丙烯主催化剂聚合配制过程，介绍了影响主催化剂活性的因素，提出了控制主催化剂活性的方法。     

Chitosan coatings enriched with active shrimp waste for shrimp preservation

An active coating solution composed of chitosan (Ch) and a shrimp protein-lipid concentrate (PCc), both obtained from Litopenaeus vannamei processing wastes, was applied to preserve shrimp during chilled storage. The addition of PCc increased the antioxidant capacity of the Ch coating, yielding a lower-viscosity mixture which, however, was viscous enough to adhere to the shrimp while maintaining its activity. The shrimp storage trial showed that the Ch coatings, especially when enriched with PCc (Ch-PCc), delayed microbial growth, mainly by extending the lag phase. Pseudomonas spp. appeared to be the predominant bacteria in the microbiota. H₂S-producing organisms and luminescent colonies were especially sensitive to this active coating, with inhibition greater than 4 and 2 log cycle respectively, while the growth of lactic acid bacteria was not favored. The Ch-PCc coating delayed the onset of melanosis and did not confer any sensorially detectable color, taste or odor. It therefore shows promise as a means to improve the quality of shrimp during cold storage.     

Microprocessor technique in gas purification equipment

Translated from Khimicheskoe i Neftyanoe Mashinostroenie, No. 11, pp. 23–25, November, 1989.     

天然气高效净化装置的数值模拟研究

为更好的研究天然气高效净化装置净化过程,运用CFD(Computational Fluid Dynamics)模拟计算其内部的运行状况,得出气流以及粉尘颗粒运动特性:速度分布、压力分布、湍动能分布和颗粒轨迹。净化装置将沉降技术、旋风分离技术、深层过滤技术有效结合,使得沉降与深层过滤阶段气流稳定、流速缓慢,旋风分离阶段流速较快,保证了气流分布的合理性,提高了分离效率。在净化过程中沉降-旋风分离单元起到预处理作用,降低后续深层过滤的压力,保证过滤效率。深层过滤单元采用不同密度梯度的中空纤维组合过滤,具有较高的过滤容量也提高了设备的分离精度。