Gaseous Nitrogen Oxide Absorption in a Sieve-Plate Column

Counce, Robert M.; Perona, J.J.

doi:10.1021/i160072a018

Cited by 18 publications

(7 citation statements)

References 19 publications

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“…x and Kwanten (1972) assume steady-state with respect to the aqueous HNO z concentration -HNOz disappears as fast as it is produced. Recent studies by Makhotkin and Shamsutdinov (1976), Counce and Perona (1979a),…”

Section: Literature Summarymentioning

confidence: 98%

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Scrubbing of gaseous nitrogen oxides in packed towers

Counce¹

1980

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Gaseous nitrogen oxides were scrubbed with water at 298 K and at near atmospheric pressure in towers packed with 6-and l3-rnm Intalox saddles. Nitrogen oxide removal efficiencies from 55 to 97% were obtained over a wide variation of packing depths. Other studies concerning the depletion of nitrous acid in packed towers are also presented.A mathematical model was developed based on the mass-transfer information for packed towers and chemical-reaction and mechanistic phenomena specific to the NO -HNO -H 2 0 system. Calculated NO removal x x x efficiencies utilizing this model agree with the observed experimental phenomena fairly closely. The model is presented and discussed along with the results of the experimental actiVities .

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Section: Literature Summarymentioning

confidence: 98%

“…Results of an experimental study of nitrogen oxide scrubbing in a three-stage sieve-plate column were reported by Counce and Perona (1979a).…”

Section: Chernmentioning

confidence: 99%

Scrubbing of gaseous nitrogen oxides in packed towers

Counce¹

1980

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“…The acid is recycled and reused within the plant. In the late 1970s and early 1980s, there was a significant effort to better understand the chemical processes (Counce and Groenier 1978) and to develop methods to design sieve-plate (Counce 1978;Counce and Perona 1979a, 1979b, bubble cap (Counce 1979), and packed (Counce 1980) scrubbing towers in nuclear fuel reprocessing plants. The presence of oxygen is necessary to improve the scrubbing efficiency of NO and N 2 O, converting them in situ to NO 2 .…”

Section: No X Recovery Systemsmentioning

confidence: 99%

Milestone Report - Data Requirements and Test System Needs for Development of an Integrated Off-Gas Treatment System

Jubin

Bruffey

Jordan

et al. 2017

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In fiscal year 2016 an Engineering Evaluation of an integrated off-gas system was conducted. This study resulted in a report entitled Engineering Evaluation of an Integrated Off-Gas Treatment System for Used Nuclear Fuel Reprocessing Facilities (Jubin et al. 2016a), from here referred to as the "Engineering Evaluation." This study focused on the capture and retention of the volatile radionuclides ( 3 H, 14 C, 85 Kr, and 129 I), selected semi-volatile radionuclides, specifically 106 Ru, and chemical species like NO and NO 2 generated during the dissolution of the used nuclear fuel. The study examined the design of the combined head-end off-gas streams and the vessel off-gas stream. The study drew upon the available literature to conduct the equipment sizing and sorbent usage. A number of assumptions were required to complete this analysis and major gaps in the available data were identified that, if resolved, could increase the fidelity of the engineering design.This assessment looks at those identified data gaps and the more subtle assumptions that were required in the Engineering Evaluation and provides a detailed look at the specific data needs for each major system. This assessment of the data gaps builds on a study conducted early in fiscal year 2016 that established a set of performance criteria for capture and immobilization technologies. The gaps identified in the engineering assessment also provided a check on the breadth of the criteria and metrics that were previously developed. During the analysis of the data gaps it was necessary to expand the metrics slightly to capture co-adsorption effects and to address desorption, neither of which were included in the original set of metrics. Across the six major off-gas control systems evaluated a number of common data gaps became apparent. These include:  Capacity and adsorption rate data needs appear common for virtually all the unit operations considered. These two parameters dictate the dimensions and operating conditions of the sorbent beds and wet scrubber systems. The capacity dictates the mass and volume of Ru, tritium, I, and Kr/Xe sorbent beds for a given adsorption duration; the adsorption rate dictates the needed depth of the solid sorbent beds and the height of the wet scrubbers. Co-adsorption of other species is important to the extent that this interferes with the adsorption of the target species, impacts process operation, or impacts handling, recycle, or disposal of the spent sorbent/scrub solutions, and the waste form and disposal of the captured species. This is of secondary importance compared to demonstrating and optimizing capacity and adsorption rates for the target species; but co-adsorption and impacts of coadsorption are areas where generally even less is currently known for both sorbent beds and wet scrubber systems.  Sorbent particle and bulk densities impact the volume of the adsorption system for a given mass of sorbent, but these physical properties data are readily measured.  For systems including regenerable sorbents, data o...

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“…The first general procedure for direct determination of critical temperature and pressure was developed by Peng and Robinson (1977), who used a criterion based on the Gibbs free energy, while a later method by Heidemann and Khalil (1979) is based on the Helmholtz free energy. Indirect methods, where the critical point is found from a phase envelope construction, have also been suggested (Assilineau et al, 1979al, , Michelsen, 1980. The direct methods result in two complex non-linear equations.…”

Section: Literature Citedmentioning

confidence: 99%

Nitric oxide gas absorption in a limestone packed column

Myerson

Sandy

1981

AIChE Journal

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then he drawn through these localized K-values to cover the entire TBP range. The calculations also indicate that the variation of the liquid concentrations of the heavy components contribute much less to the error in the K-values from the pseudocomponent treatment than the variation in the y value across the same cut. For example for the 533.15-560.95K fraction, at 533.15K and 10.335 MPa, the x-value of the heavy component varies from 0.8483 to 0.8473 while the y-value varies from 0.003834 to 0.007884.Once the basic data for the equilibrium liquid and vapor compositions of acceptable accuracy have been obtained to represent the K-values as a function of pressure, temperature and composition, the latter assigned along the true boiling point cut, then the calculations can he conducted using size of cuts more consistent with the new experimental accuracy, hopefully, much smaller than are inherent in the present treatment. NOTATION LV%WV P, = critical pressure T, = critical temperature y = volume percent of liquid boil off = liquid to vapor molar ratio X = mole fraction in the liquid phase = mole fraction in the vapor phase Greek Letters y Y O 4 o = acentric factor = activity coefficient in the liquid phase = fugacity coefficient in the liquid phase = fugacity coefficient in the vapor phase

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Gaseous Nitrogen Oxide Absorption in a Sieve-Plate Column

Cited by 18 publications

References 19 publications

Scrubbing of gaseous nitrogen oxides in packed towers

Scrubbing of gaseous nitrogen oxides in packed towers

Milestone Report - Data Requirements and Test System Needs for Development of an Integrated Off-Gas Treatment System

Nitric oxide gas absorption in a limestone packed column

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