The effect of the hydrogen presence on combustion-induced rapid phase transition of CO/O2/N2 mixtures

Basco, Anna; Cammarota, F.; Benedetto, Almerinda Di; Sarli, Valeria Di; Salzano, Ernesto; Russo, G.

doi:10.1016/j.ijhydene.2013.10.028

Cited by 19 publications

(12 citation statements)

References 7 publications

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“…More recently, we have found a similar behavior during closed vessel explosion tests for CH 4 /O 2 /N 2 /CO 2 [13e15] and H 2 /CO/O 2 /N 2 /CO 2 [8,16] mixtures. In particular, a transition has been observed e with increasing oxygen content e from deflagration to an anomalous regime characterized by oscillations and over-adiabatic peaks in pressure time histories.…”

Section: Introductionsupporting

confidence: 60%

“…We first applied the theoretical analysis to the experimental data we obtained for H 2 /CO/O 2 /N 2 [16] and CH 4 /O 2 /N 2 /CO 2 [14] mixtures. Tables 1 and 2 give the characteristic times of reaction, t reac , and condensation, t cond , and the ratio q 1 (¼ t cond / t reac ) for H 2 /CO/O 2 /N 2 ( Table 1) and CH 4 /O 2 /N 2 /CO 2 ( Table 2) mixtures.…”

Section: Resultsmentioning

confidence: 99%

“…Fig. 3 shows a map for the occurrence of cRPT in the plane adiabatic temperature (T ad )-water partial pressure (P H2O ) (black symbols ¼ H 2 /CO/N 2 /O 2 mixtures [16]; red symbols ¼ CH 4 /O 2 / N 2 /CO 2 mixtures [14]). The GASEQ chemical equilibrium program [23] was used to calculate both T ad and P H2O .…”

Section: Resultsmentioning

confidence: 99%

“…Thus, the theoretical analysis requires the definition of a dimensionless parameter that quantifies the degree of synchronization between these two phases: Table 1 e Calculated characteristic time of reaction, t reac , characteristic time of condensation, t cond , and dimensionless parameter q 1 for the experimental data by Basco et al [16] (H 2 /CO/O 2 /N 2 mixtures). i n t e r n a t i o n a l j o u r n a l o f h y d r o g e n e n e r g y 4 0 ( 2 0 1 5 ) 8 2 3 9 e8 2 4 7…”

Section: Theoretical Analysismentioning

confidence: 99%

“…In Ref. [16], we presented the results of explosion tests for CO and H 2 eCO (H 2 mole fraction in the fuel e H 2 plus CO e varying from 0.01 to 0.1) in oxygen enriched-air. In the absence of H 2 and, thus, in the absence of H 2 O in the combustion products, no c-RPT has been found.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Theoretical analysis of anomalous explosion behavior for H 2 /CO/O 2 /N 2 and CH 4 /O 2 /N 2 /CO 2 mixtures in the light of combustion-induced rapid phase transition

Basco

Cammarota

Sarli

et al. 2015

International Journal of Hydrogen Energy

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Section: Introductionsupporting

confidence: 60%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Theoretical Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Theoretical analysis of anomalous explosion behavior for H 2 /CO/O 2 /N 2 and CH 4 /O 2 /N 2 /CO 2 mixtures in the light of combustion-induced rapid phase transition

Basco

Cammarota

Sarli

et al. 2015

International Journal of Hydrogen Energy

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Experimental and computational studies of concentration and flow field variation of syngas released

Li,

Wang,

Yin

et al. 2023

Env Prog and Sustain Energy

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Syngas is an important chemical energy source with broad application prospects. The main problem with using syngas is its hazards, such as high storage pressure, high dispersion, low mass density, explosive, and toxic. The aim of this article is to find the key factors for the diffusion of syngas leakage and analyze the distribution of the dangerous concentration range from the diffusion behavior and hazard range characteristics of syngas leakage under complex working conditions. Therefore, a syngas leakage experimental bench is established, and a three‐dimensional simulation of syngas leakage was modeled. The results show that the initial pressure is the most critical factor, and the concentration distribution under different initial pressures is significantly different. The time required for carbon monoxide (CO) and hydrogen (H2) to reach their maximum concentration increased as the initial pressure or temperature decreased. The volume ratio had little effect on the time when CO and H2 reached the maximum concentration. In the horizontal direction, CO diffused further than H2 in the buoyant jet. The max volume fraction of H2 and CO did not exceed 1% and 2.5%, respectively. The research results are expected to give guidelines for the safety protection and standard improvement of syngas leakage.

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Explosion behavior of ammonia and ammonia/methane in oxygen‐enriched air

Sarli

Cammarota

Salzano

et al. 2017

Process Safety Progress

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The effect of enriching air with oxygen on the explosion behavior of ammonia and ammonia/methane has been experimentally investigated in a closed 5‐l cylindrical vessel. Results have shown that for both ammonia and ammonia/methane, when moving from air to pure oxygen, a transition takes place from a normal deflagration behavior to one that near or at the end is accompanied by a combustion‐induced Rapid Phase Transition (cRPT) pressure pulse, an explosion mode characterized by strong oscillations in pressure time histories culminating in over‐adiabatic peaks (i.e., values of the peak pressure even higher than 400 bar and, thus, much higher than the thermodynamic value). On the basis of these findings under the experimental conditions applied in our tests, the occurrence of cRPT should be carefully considered in the development of industrial processes based on ammonia reactions in oxygen‐enriched atmosphere. For that, the phenomenon should be investigated in equipment of larger volume. © 2017 American Institute of Chemical Engineers Process Saf Prog 36: 368–371, 2017

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The effect of the hydrogen presence on combustion-induced rapid phase transition of CO/O2/N2 mixtures

Cited by 19 publications

References 7 publications

Theoretical analysis of anomalous explosion behavior for H 2 /CO/O 2 /N 2 and CH 4 /O 2 /N 2 /CO 2 mixtures in the light of combustion-induced rapid phase transition

Theoretical analysis of anomalous explosion behavior for H 2 /CO/O 2 /N 2 and CH 4 /O 2 /N 2 /CO 2 mixtures in the light of combustion-induced rapid phase transition

Experimental and computational studies of concentration and flow field variation of syngas released

Explosion behavior of ammonia and ammonia/methane in oxygen‐enriched air

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