A continuous and high-efficiency process to separate coal bed methane with porous ZIF-8 slurry: Experimental study and mathematical modelling

Chen, Wan; Xiao-nan, Guo; Zou, Enbao; Luo, Mengling; Chen, Mengzijing; Yang, Mingke; Li, Hai; Jia, Chongzhi; Deng, Chun; Sun, Chang‐Yu; Liu, Bei; Yang, Le; Chen, Guangjin

doi:10.1016/j.gee.2020.04.015

Cited by 26 publications

(12 citation statements)

References 31 publications

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“…Paper [3] reports experimental research and mathematical modeling of a continuous, highly efficient process of separating coal seam methane from a porous suspension. The results of the experiments and the simulation of the process described in the paper provide basic data for the design and operation of the pilot and industrial plants.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…However, with the advent of the possibility of increasing the number of degrees of freedom of control over technological mechanisms, it became possible for technological processes to work with a parallel change in control trajectories under the dynamically changing external environmental conditions [1,2]. That made it possible to make adjustments to the production process in real time [3]. Thus, with the advent of self-adjusting, continuously operating technological systems, the importance of control interventions and the assessment of their effectiveness deserves even greater attention and requires devising scientifically-based approaches.…”

Section: Introductionmentioning

confidence: 99%

“…Studies of the levels of blood oxygenation (saturation), that is, the percentage of oxygen saturation of hemoglobin, became increasingly active as a result of the coronavirus pandemic (COVID-19). The first stage of this viral disease is characterized by «latent hypoxia» due to insufficient oxyge nation of the patient's blood [1][2][3]. Hypoxia, or lack of oxygen, can be almost unnoticeable for saturation levels close to 90 % and below.…”

Section: Introductionmentioning

confidence: 99%

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Cybernetic estimation of reserve utilization efficiency

Lutsenko

2021

EEJET

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This study relates to the field of verification of cybernetic estimates of the use of reserves as criteria for the effectiveness of transformative class systems with a continuous supply of a technological product. The task set here attracted even more attention after the advent of improved approaches that make it possible to automatically change the control trajectories of technological systems in real time. In such cases, the assessment of the current status of the process and the efficiency of stock management has become an integral part of the operation of the management subsystems. Therefore, the development and verification of cybernetic assessment of effectiveness for such control systems is a relevant issue. The first stage of the reported research involved the development of a cybernetic model of operation with distributed parameters. Four formal features have been proposed. Finding integral functions of these features has made it possible to obtain an idea of some quantitative characteristics of the process while finding the second time-dependent integral characteristic has made it possible to represent the physical and cybernetic parameters of the process. At the second stage, formulas for calculating the main assessment indicators were proposed; their verification was carried out under three different control trajectories, which showed the adequacy of the devised approach. The final step was to develop three variations of the efficiency formula, which is calculated at set points in time throughout the entire production cycle. Thus, cybernetic assessment of the effectiveness of the use of reserves makes it possible to formalize and fully automate the processes of optimization and adaptation of the functional systems of an enterprise

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Section: Literature Review and Problem Statementmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Cybernetic estimation of reserve utilization efficiency

Lutsenko

2021

EEJET

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“…Liu et al [21] proposed a ZIF-8/glycol-water slurry absorptionadsorption hybrid method to separate the gas mixture, where ZIF-8 can be suspended in water and maintain its adsorption performance because of its hydrophobicity and the similar density to water. By experiments, the solubility and separation performance of the slurry for carbon dioxide [22,23], low-boiling hydrocarbon [21], and their mixtures [24,25] were studied, and a continuous (ab-ad)sorption-desorption process was proposed with its mathematical model also developed [26]. Furthermore, the (ab-ad)sorption-desorption process was successfully run in a pilot-scale plant with promising results [27,28].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Breakthrough Separation for Hydrogen Recovery from Coke Oven Gas Using ZIF-8 Slurry

et al. 2022

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A large amount of COG (coke oven gas) is produced from coking plants every year, which contains 55–60% H2. In this work, the breakthrough separation of H2 from COG with ZIF-8/ethylene glycol-water slurry was studied. Following the investigation of the (ab-ad)sorption isotherms of the single component gas CH4 and H2, the main components of coke oven gas, in different slurries and their corresponding viscosities, and the influence of the operating conditions on the dynamic performance of CH4/H2 separation in slurry were studied in a bubble column. Low temperature, inlet flow rate, high pressure, and solid content can extend the breakthrough time, where the longest breakthrough time interval between H2 and CH4 can be as long as 70 min, meaning the high purity of H2 product could be obtained easily. All the results of this work prove the feasibility of the slurry method to separate CH4/H2 mixture and provide a theoretical basis for practical industrial applications.

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“…Coal bed methane (CBM) or coal mine methane (CMM) is a signi cant and unavoidable resource for natural gas exploration and production (Chen et al 2020;Karacan and Warwick 2019;Zheng et al 2018;Vedachalam et al 2015;Moore 2012). Speci cally, India has tremendous potential for the extraction of methane from coal beds (Rathi et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Permeability Damage and Supercritical Fluid Storage in the Cauvery Basin Neyveli Lignite Bed Containing Kaolinite Deposits during Alternative Injection of Brine and CO2

Rajkumar

Antony

Mahalingam³

et al. 2020

Preprint

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A laboratory based investigation has been conducted on permeability damage and CO2 storage or retention in the lignite core during alternative injection of brine and supercritical carbon dioxide. Moreover, anthracite and bituminous coal beds were focused by the scientific community for effective production and reservoir formation damage study. But, now-a-days, lignite based coal bed methane reservoirs have attracted attention for productive exploitation and formation collapse investigation. Hence, for this purpose, a single component injection two phase (Brine + Supercritical CO2) coreflood test analysis under alternative injections were performed to investigate the occurrence of lignite structural collapse, permeability damage, injectivity decline and CO2 retention as well. The experimental study reveals that, due to gravity segregation there is a high rate of fluid saturation in lignite core and also, moderate level of heat transfer coefficient was also noted. Also, lignite core structural collapse under the brine and supercritical CO2 injection at different velocities resulted in huge volume of coal and kaolinite fines concentration. Kaolinite and coal fines migration resulted in pressure change and permeability decline in lignite core. The suspensions produced were passed to microstructural analysis and it revealed that kaolinite fine particle tends to possess a leaflet geometrical structure, which obstructed the cleats and restricted the fluid flow. Subsequently, hysteresis modelling (Pranesh 2018) was applied to this problem to quantify the amount of CO2 retention in lignite core. Additionally, statistical model, multiple linear regression was applied to this problem to validate the experimental model, which showed good agreement.

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A continuous and high-efficiency process to separate coal bed methane with porous ZIF-8 slurry: Experimental study and mathematical modelling

Cited by 26 publications

References 31 publications

Cybernetic estimation of reserve utilization efficiency

Cybernetic estimation of reserve utilization efficiency

Experimental Study on Breakthrough Separation for Hydrogen Recovery from Coke Oven Gas Using ZIF-8 Slurry

Permeability Damage and Supercritical Fluid Storage in the Cauvery Basin Neyveli Lignite Bed Containing Kaolinite Deposits during Alternative Injection of Brine and CO2

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