Catalytic effect of lignite ash on steam gasification of oil sand coke

Furimsky, Edward; Palmer, Allan D.

doi:10.1016/s0166-9834(00)81304-4

Cited by 16 publications

(14 citation statements)

References 11 publications

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“…The recovered Me site becomes available for another red-ox cycle and so on. For example, among three Fe oxidic forms of MeO (e.g., FeO, Fe 3 O 4 , and Fe 2 O 3 ), the most favorable driving forces for reactions and were obtained for FeO. − …”

Section: Properties Of Carbon Supportsmentioning

confidence: 99%

“…The involvement of mineral matter during the steam gasification of carbons has been confirmed in several studies. For example, pet-coke and coal were used to study the effect of inherent mineral matter. , For the latter, it was shown that the gasification reactivity of coal decreased significantly after being treated with concentrated HCl. This was attributed to the removal of inherent mineral matter during treatment.…”

Section: Properties Of Carbon Supportsmentioning

confidence: 99%

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CO₂ Hydrogenation to Methanol and Methane over Carbon-Supported Catalysts

Furimsky¹

2020

Ind. Eng. Chem. Res.

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Methanol and methane are among the important products obtained during the hydrogenation (HYD) of CO2. The distribution of products and their yields can be influenced by operating conditions. In this case, the type of catalyst has a dominant effect. Gradual transformation of CO2 involves several surface intermediates. Special geometry of active site is required for maximizing the yield of methanol and for minimizing the reaction run-away to methane. Such a state can be attained over catalysts that contain CuO-ZnO components. Catalysts containing other transition metals and noble metals are less suitable, while the same catalysts exhibit good performance during the HYD of CO2 to methane. In industrial applications, catalysts supported on oxidic supports, i.e., Al2O3, SiO2, TiO2, etc., have been used. During HYD of CO2, 1 and 2 mol of water are generated for every mole of methanol and methane, respectively. The stability of catalysts used for HYD of CO2 can be enhanced by replacing oxidic supports with carbon supports. Amorphous carbons, such as activated carbon, and carbon nanomaterials, such as carbon nanotubes, carbon nanofibers, and graphene-derived solids, have been tested both as catalysts and supports. For methanol synthesis, CuO-ZnO catalysts supported on these carbons have been evaluated. Similar carbon supports have been used for the preparation and testing of methanation catalysts consisting of a wide range of transition and noble metals as active metals. Both monometallic and bimetallic catalysts were evaluated.

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Section: Properties Of Carbon Supportsmentioning

confidence: 99%

Section: Properties Of Carbon Supportsmentioning

confidence: 99%

CO₂ Hydrogenation to Methanol and Methane over Carbon-Supported Catalysts

Furimsky¹

2020

Ind. Eng. Chem. Res.

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“…methanol, ammonia, etc. ), liquid fuels via Fischer–Tropsch (F‐T) synthesis and so on . However, the choice of the final product out of gasification depends on the refinery configuration and market requirements.…”

Section: Perspective Of Petcoke Gasificationmentioning

confidence: 99%

“…), liquid fuels via Fischer-Tropsch (F-T) synthesis and so on. [23][24][25][26][27][28][29][30][31][32] However, the choice of the final product out of gasification depends on the refinery configuration and market requirements. A high pressure steam can be produced by recovering heat from the hot gasification products directly in the gasifier and/or in the syngas cooler.…”

Section: Perspective Of Petcoke Gasificationmentioning

confidence: 99%

Petroleum coke gasification: A review

et al. 2013

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The production of petroleum coke (petcoke) in the refineries is progressively peaking up because of the trend of processing heavy crudes and in turn, a renewed interest in delayed coking process. Therefore, an efficient, economical, and environmentally safe utilisation of petcoke has become imperative in the current petroleum refining scenario. Gasification of petcoke has emerged as one of the attractive options and is gaining increasing attention to convert the petcoke to value‐added products. The process offers the refiners a variety of product slates mainly via synthesis gas route. The products include steam, hydrogen, electricity, chemicals (viz. methanol, ammonia, etc.), liquid fuels via Fischer–Tropsch (F‐T) synthesis and so on. Petcoke has been identified as a potential feedstock for about 15% of the total planned gasification capacity worldwide. In the present communication, the published literature pertaining to petcoke gasification has been extensively analysed and a state‐of‐the‐art review has been written that includes: (1) the importance of petcoke gasification in the present petroleum refining scenario; (2) petcoke gasification reaction mechanism, kinetics, and typical product profile; (3) parametric sensitivity of the operating variables such as temperature and pressure; (4) various gasifiers for petcoke gasification; (5) modelling efforts on different types of gasifiers and (6) future prospects of petcoke gasification. An attempt has been made to get the afore‐mentioned aspects together in a thematic framework so that the information is available at a glance and is expected to be useful as a single point source to the researchers and practicing refiners.

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“…Ueda et al (2011) studied the catalytic effect of an alkaline earth metal compound on gasification of bitumen coke in a fluidized bed reactor. Furimsky et al (1986) used a lignite ash containing Ca, Mg, Ba, Fe, and Ni oxides as catalyst with both delayed and fluid cokes from Alberta oil sands in a fixed bed reactor. Watkinson et al (1989) studied the addition of potassium carbonate to oil sand coke in a fluidized bed.…”

Section: Introductionmentioning

confidence: 99%

Investigate the kinetics of coke solution loss reaction with an alkali metal as a catalyst based on the improved genetic algorithm

Zhao

Zhang

Cui

2017

Int J Coal Sci Technol

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The kinetics of coke solution loss reaction with and without sodium carbonate were investigated under the reaction atmosphere of carbon dioxide. The variables of gas flow rate and coke particle size were explored to eliminate the external and internal diffusion, respectively. Then, the improved method combining with the least square and the genetic algorithm was proposed to solve the homogeneous model and the shrinking core model. It was found that the improved genetic algorithm method has good stability by studying the fitness function at each generation. In the homogeneous model, the activation energy with and without sodium carbonate was 54.89 and 95.56 kJ/mol, respectively. And, the activation energy with and without sodium carbonate in the shrinking core model was 49.83 and 92.18 kJ/mol, respectively. Therefore, it was concluded that the sodium carbonate has the catalytic action. In addition, results showed that the estimated conversions were agreed well with the experimental ones, which indicated that the calculated kinetic parameters were valid and the proposed method was successfully developed. Graphical AbstractKeywords Coking Á Kinetic Á Improved genetic algorithm Á Alkali metal Á Catalyst

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Catalytic effect of lignite ash on steam gasification of oil sand coke

Cited by 16 publications

References 11 publications

CO₂ Hydrogenation to Methanol and Methane over Carbon-Supported Catalysts

CO₂ Hydrogenation to Methanol and Methane over Carbon-Supported Catalysts

Petroleum coke gasification: A review

Investigate the kinetics of coke solution loss reaction with an alkali metal as a catalyst based on the improved genetic algorithm

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Catalytic effect of lignite ash on steam gasification of oil sand coke

Cited by 16 publications

References 11 publications

CO2 Hydrogenation to Methanol and Methane over Carbon-Supported Catalysts

CO2 Hydrogenation to Methanol and Methane over Carbon-Supported Catalysts

Petroleum coke gasification: A review

Investigate the kinetics of coke solution loss reaction with an alkali metal as a catalyst based on the improved genetic algorithm

Contact Info

Product

Resources

About

CO₂ Hydrogenation to Methanol and Methane over Carbon-Supported Catalysts

CO₂ Hydrogenation to Methanol and Methane over Carbon-Supported Catalysts