Detailed kinetic modeling of homogeneous H2S-CH4 oxidation under ultra-rich condition for H2 production

Li, Yang; Yu, Xia; Li, Hongjun; Guo, Qinghua; Dai, Zhenghua; Yu, Guangsuo; Wang, Fuchen

doi:10.1016/j.apenergy.2017.09.059

Cited by 24 publications

(11 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Free volume polymer extension takes place amid the mixing procedure of immiscible blends, causing higher gas permeation rates. However, a significant negative volume change in the mixing of homogeneous miscible polymer blend had led to a notable reduction in gas permeation rates and therefore, an expansion in gas selectivity [57,58]. Reproduced with permission from [52].…”

Section: Classical Membranes and Their Disadvantagesmentioning

confidence: 99%

Polymeric Membrane for CO2/CH4 Separation

Salleh

Ismail

Sazali

2021

Materials Research Foundations

View full text Add to dashboard Cite

This chapter presents a critical overview of polymeric membrane applications for CO2/CH4 separation. Comparative summary of availability and practice of different gas separation methods are outlined to give a state-of-the-art view of this technology. Detailed discussions on polymer-based membranes are also discussed in this work, highlighting the mechanism of selective gas permeation through the membranes. Future direction is discussed for possible new experimental design to maximize the membrane performances in separation of CO2/CH4.

show abstract

Section: Classical Membranes and Their Disadvantagesmentioning

confidence: 99%

Polymeric Membrane for CO2/CH4 Separation

Salleh

Ismail

Sazali

2021

Materials Research Foundations

View full text Add to dashboard Cite

show abstract

“…And, equation (3) leads to the production of H 2 , and hydrogen is a species which deserved consideration in the Claus process. As seen in the literature, Cong et al [8], Ravikumar et al [10], Savelieva et al [22], and Li et al [23] have studied the way to increase hydrogen production via the thermolysis and oxidation of hydrogen sulfide (H 2 S).…”

Section: Formation Of Sulfur Vapor (S 2 )mentioning

confidence: 99%

Kinetic Modeling Study of the Industrial Sulfur Recovery Process for Operating Condition Optimization

Huang

Teng

Zhang³

et al. 2020

Journal of Chemistry

View full text Add to dashboard Cite

Sulfur recovery from acid gas (H2S and CO2), which is contained in fresh natural gas, can bring many economic and environmental benefits, and this topic has been studied for years. Finding an optimal operating condition for the factory is of much importance. In this paper, we built a reactor network analysis model with a detailed mechanism to describe and calculate the process in the sulfur recovery unit. This detailed mechanism included 94 species and 615 elementary reactions. Our model has a more accurate residence time than other existing models. This simulation model was verified with industrial data, and the calculation result was highly consistent with the industrial data and more accurate than other approaches. Then, we used this reactor network analysis model to study the effect of the excess air coefficient, the thermal reactor temperature, and the temperature of cooling water on the sulfur recovery efficiency of a real device in the Puguang gas field. The result showed the excess air coefficient and thermal reactor temperature had a clear impact on sulfur recovery efficiency. After analysis, we got the optimum condition parameters for this device. At last, these parameters were tested in the real sulfur recovery device, and the result was reasonable. Our research provides a way to improve the sulfur recovery process in the industry, and it can be helpful to reduce pollution emissions and improve economic performance.

show abstract

“…Results of validation are presented in our previous works. 16,36−39 As an example, Figure 3 shows the comparison of measured 7,10 and calculated by the model 16 concentrations of target species H 2 and CS 2 at the reactor outlet produced during the conversion of H 2 S−CH 4 −N 2 mixtures.…”

Section: Kinetic Modelmentioning

confidence: 99%

“…Up to now, most studies were focused on the conversion of individual components of sour gas, mainly CH 4 and H 2 S. One of the first papers on the experimental study of hydrogen production from the reaction of methane and hydrogen sulfide was published in 1991 . In recent years, several works concerning the simultaneous reforming of CH 4 –H 2 S − and C 2 H 4 –H 2 S mixtures to obtain hydrogen were also published. Experimental studies , of the conversion of the H 2 S–CH 4 –N 2 mixture in a heated ( T = 1273–1673 K) quartz tubular reactor showed that the conversion of hydrogen sulfide and the production of hydrogen significantly increased in the presence of methane.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Numerical Study of Syngas Production during Partial Oxidation of Sour Natural Gases upon Activation of Oxygen by an Electrical Discharge

2019

View full text Add to dashboard Cite

The paper presents a numerical study of synthesis gas (H2 + CO) production during a low-temperature partial oxidation of sour natural gases in an atmospheric pressure plug-flow reactor upon activation of oxygen by an electrical discharge. Conversion features of sour gases with considerably different compositions are considered. One of them contains a noticeable amount of H2S and CO2, and the other consists mainly of methane. Calculations show that exposure of oxygen to an electrical discharge makes it possible to conduct the sour gas partial oxidation at a lower temperature (at least by 100 K compared to the thermal process) and to obtain the same yield of syngas. Specific energy required for production of 1 mol of syngas in this case can be 4.5–5 times lower than when using thermal conversion. The optimal fuel/oxygen equivalence ratio is φ ∼ 3. In this case, the maximum amount of syngas and minimal amount of byproducts form in the conversion products, and a lower energy supply is required per produced syngas. An addition of water vapor to sour gas does not lead to an increase in the syngas production during low-temperature plasma-assisted conversion of sour gases in the flow reactor.

show abstract

Detailed kinetic modeling of homogeneous H2S-CH4 oxidation under ultra-rich condition for H2 production

Cited by 24 publications

References 48 publications

Polymeric Membrane for CO2/CH4 Separation

Polymeric Membrane for CO2/CH4 Separation

Kinetic Modeling Study of the Industrial Sulfur Recovery Process for Operating Condition Optimization

Numerical Study of Syngas Production during Partial Oxidation of Sour Natural Gases upon Activation of Oxygen by an Electrical Discharge

Contact Info

Product

Resources

About