High-Performance Contact Devices for Mass-Transfer Processes

Ziganshin, K. G.; Osintsev, A. A.; Ziganshin, G. K.; Minnullin, M. N.

doi:10.1023/b:cape.0000017616.60338.50

Cited by 2 publications

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“…Process emissions from nickel-plating baths contain hard-to-remove fine aerosol particles that must be treated in fibrous filters. [16]. Fibrous filter materials capture aerosol particles of micron and submicron sizes [17].…”

Section: Introductionmentioning

confidence: 99%

Air purification from process emissions from electroplating baths

2021

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Electroplating technology is an important technological process at production facilities of various profiles. The electroplating baths are a source of hazardous emissions of toxic vapors and aerosols. In factories with electroplating sites, the crucial task is to eliminate hazardous emissions by applying an effective exhaust ventilation and air purification system for subsequent air discharge into the atmosphere. In this article two basic schemes for cleaning process emissions from electroplating baths were developed: a scheme with purification in scrubbers; a scheme with purification in scrubbers with pre-filtration. The advantages and disadvantages of each scheme were considered. Based on the amount of hazardous emissions and their dispersed composition, the purification efficiency of each scheme was calculated using the probabilistic method. In view of the calculations, a scheme for cleaning process emissions from the electroplating line with the highest purification efficiency has been identified.

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Section: Introductionmentioning

confidence: 99%

Air purification from process emissions from electroplating baths

2021

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“…To enhance heat and mass transfer, the Sulzer-Mellapak internals in the tower were replaced by IMPA Engineering contact devices [4]. Six such devices were installed in the extraction zone and two were placed in the extract solution recirculation zone (Fig.…”

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confidence: 99%

Modernization of the extraction tower in the selective treatment section on the KM-2 unit

Ziganshin

Osintsev

Ziganshin

et al. 2006

Chem Technol Fuels Oils

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In 2003, the problem of increasing takeoff of residual raffinate while preserving its quality and reducing power consumption in the selective treatment section of the combined KM-2 unit for production of lube oils and waxes was set before Slavneft'-Yaroslavnefteorgsintez Co. The bid of IMPA Engineering Ltd. -a specialized enterprise for development of modern extraction equipment whose efficiency was confirmed by experience in industrial operation -was selected to solve this problem [1].After examining operation of the extraction unit in this section, IMPA Engineering developed a plan for modernizing the extraction tower and fabrication and installation of internals and master assembly. Extraction treatment of deasphalted product with N-methylpyrrolidone is conducted in the tower (23.7 m high, 2.4 m in diameter). Inspection of operation of the tower before and after modernization included generalizing the process parameters in a wide feedstock charge range -from 12.5 to 17.5 m 3 /h -and laboratory studies of selected industrial samples.Several operating regimes that differed by the feedstock charge and quality of the treated feedstock were distinguished (Table 1). With an increase in the charge, the overall unit load of contacting phases increases so that the efficiency of their reaction increases and the ratio of solvent to feedstock decreases. The quality of the feedstock additionally affects the tower operating indexes: to obtain raffinate of standardized quality -carbon residue of 0.40-0.45 wt. % from deasphalted product with high carbon residue -from 1.14 to 1.42%, the ratio of solvent to feedstock must be increased from 1.14 to 1.42 %.Laboratory modernization of selective treatment of the feedstock was conducted with the psendoreflux method in [2,3]. The essence of the method consists of varying the number of theoretical treatment plates to determine its effect on the quality indexes and product takeoff. The efficiency of operation of the tower in

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High-Performance Contact Devices for Mass-Transfer Processes

Cited by 2 publications

References 0 publications

Air purification from process emissions from electroplating baths

Air purification from process emissions from electroplating baths

Modernization of the extraction tower in the selective treatment section on the KM-2 unit

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