Temperature prediction via reaction heat calculation of burned pseudo-components during in-situ combustion

Zhao, Renbao; Li, Bochun; Yang, Jie; Gao, Bo; Zhang, Chunhui; Fu, Joseph; Wang, Ruyan

doi:10.1016/j.fuel.2017.10.070

Cited by 15 publications

(11 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The molar amounts of oxygen consumption and carbon oxides production for the four distillate fractions (350-420 • C, 420-450 • C, 450-500 • C and 500+ • C) of oil sample 1 increased with the ambient temperature; the calculated results are listed in Tables 3 and 4. The results indicate that the higher the environment temperature, the greater the oxygen addition and cracking degree of LTO, which is consistent with the previous research [33]. R COx/O2 designates the ratio of carbon oxides production to oxygen consumption.…”

Section: Oxidation Degree At Different Temperature Regionssupporting

confidence: 91%

Evolution of the Pseudo-Components of Heavy Oil during Low Temperature Oxidation Processes

et al. 2022

Self Cite

View full text Add to dashboard Cite

Heavy oil was divided into different pseudo-components according to their boiling ranges through a real-boiling point distillation process, and the oxidation products for pseudo-components with a boiling range higher than 350 °C were systematically investigated during low temperature oxidation (LTO). Kinetic cell (KC) experiments were conducted under different ambient pressure conditions and temperature ranges, and the oxidation products were characterized using Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR-MS). The results indicate that the oxygen addition and cracking reactions typically occur in the temperature intervals of 140–170 °C and 180–220 °C, respectively, at the given heating rate of 3.83 °C/min. Components with the mass-to-charge ratio in the region of 250–450 Da mainly evaporate in the temperature regions of 25–150 °C, which results in losses from the fraction. Considering the gas-liquid multi-phase reaction, the pseudo-components with low boiling range distributed on the surface of the liquid film are prone to generate high molecular weight compounds through oxygen addition. In contrast, the high boiling point range fractions increase in molecular weight through oxygen addition and are then subject to further cracking processes that generate lower molecular weights in the region of 200–400 Da. N1O3- and N1O4- containing compounds were determined by high resolution mass spectra, and these compounds were generated through oxygen addition of basic N1-containing compounds. On the basis of these reactions and the experimental results obtained, some insights related to the LTO of heavy oil, which are highly valuable for ISC field applications, are summarized.

show abstract

Section: Oxidation Degree At Different Temperature Regionssupporting

confidence: 91%

Evolution of the Pseudo-Components of Heavy Oil during Low Temperature Oxidation Processes

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

“…Hence, the influence of the reservoir parameters on the combustion behaviors could be reasonably predicted by the numerical model. Part of the simulation results verified by physical experiments greatly increased the reliability of the prediction and facilitated the mechanism study of ISC …”

Section: Methodsmentioning

confidence: 89%

“…Part of the simulation results verified by physical experiments greatly increased the reliability of the prediction and facilitated the mechanism study of ISC. 16 …”

Section: Methodsmentioning

confidence: 99%

Study on the Lower Limits of Physical Parameters for Heavy Oil Reservoirs during the In Situ Combustion Process

Zhao

Sun

et al. 2023

ACS Omega

Self Cite

View full text Add to dashboard Cite

As an effective enhanced oil recovery (EOR) method in the late stage of the steam injection process, in situ combustion (ISC) has been verified by more and more researchers owing to its high recovery efficiency and low operation cost. However, the ISC process is prone to bringing about an unfavorable result with a low sweep efficiency and even an extinction process due to the complexity and uncertainty in oil and water distribution as well as the heterogeneity of the actual reservoir. In this work, combustion tube experiments combined with numerical simulations by CMG-STARS were conducted to study the influence of a reservoir′s physical parameters on the stability of ISC. It was found that the sustainability of the combustion process is sensitive to permeability and oil saturation, the lower limits of which are determined as 0.2 μm2 and 0.2, respectively. Then, a formula was preliminarily proposed as 0.25 ≤ So/K ≤ 0.8, which could be used as a reference of screening criteria in designing the ISC process.

show abstract

“…According to the reaction rate equation, ,− reaction heat equation, − convection heat transfer equation, − and related research works, ,, a temperature distribution model of MC reaction support is proposed, as shown in eq . Equation introduces the temperature of the i th region of the CRS in the MC reaction process.…”

Section: Methodsmentioning

confidence: 99%

3D-Printed Regular-Porous Structure with Trapezoidal Multiple Microchannels as Combustion Reaction Support for the Autothermal Methanol Steam Reforming Microreactor for Hydrogen Production

Zheng

Zhou

Zhong

et al. 2022

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

To decrease the temperature difference per unit temperature (ΔTA) of an autothermal methanol steam reforming (ATMSR) microreactor for hydrogen production (HP) and enhance its long-term HP performance for supplying long-term stable hydrogen source for fuel cell vehicles, a threedimensional (3D)-printed regular-porous structure with multiple microchannels is developed as combustion reaction support (CRS) of the ATMSR microreactor. A regular-porous structure with multiple microchannels is designed as CRS based on the temperature distribution model of methanol combustion (MC) reaction support established according to the MC reaction mechanism. Reactant concentration and temperature distributions of the regular-porous CRSs with various multiple microchannels are studied by numerical simulation. Combustion performances of regular-porous CRS with optimized multiple microchannels, nonoptimized regular-porous CRS, and nickel foam CRS with optimized multiple microchannels are compared by experiments. HP performances of ATMSR microreactors with the optimized and nonoptimized regular-porous CRSs are also compared. The results show that compared to the nonoptimized regular-porous CRS and the optimized nickel foam CRS, the ΔTA of the optimized regular-porous CRS decreases by 58.6 and 15.6%, respectively. Due to the less carbon deposition and particle agglomeration of the HP catalyst realized by the optimized regular-porous CRS, the ATMSR microreactor with the CRS can display better long-term HP performance. This research work offers a new method for enhancing the long-term HP performance of the ATMSR microreactor.

show abstract

Temperature prediction via reaction heat calculation of burned pseudo-components during in-situ combustion

Cited by 15 publications

References 17 publications

Evolution of the Pseudo-Components of Heavy Oil during Low Temperature Oxidation Processes

Evolution of the Pseudo-Components of Heavy Oil during Low Temperature Oxidation Processes

Study on the Lower Limits of Physical Parameters for Heavy Oil Reservoirs during the In Situ Combustion Process

3D-Printed Regular-Porous Structure with Trapezoidal Multiple Microchannels as Combustion Reaction Support for the Autothermal Methanol Steam Reforming Microreactor for Hydrogen Production

Contact Info

Product

Resources

About