A novel integrated Ca-Cu cycle with coal/biomass gasification unit for clean hydrogen production

Habibi, Roghayeh; Mehrpooya, Mehdi

doi:10.1016/j.enconman.2020.113682

Cited by 29 publications

(9 citation statements)

References 45 publications

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“…Table shows the comparison of the simulation results for the CCL process. The main operating parameters including the pressures of the ER, OXIR, and CALR and the temperature of CALR are the same as those in the literature . The simulation results obtained in this work, such as the conversion rates in the ER, OXIR, and CALR, the hydrogen yield, and the CO 2 capture efficiency are all close to those reported in the literature, which verifies the effectiveness of the simulation scheme presented in this work.…”

Section: Design Of the Clean Ammonia Synthesis System Based On Simula...supporting

confidence: 83%

“…The detailed calculation equation of the comparison parameters can be found in the literature. 15 Table 3 shows the comparison of the simulation results for the AS process. It can be seen that the operating parameters and simulation results in this work are basically the same as those in the literature.…”

Section: Conceptual Design Of a Clean Ammoniamentioning

confidence: 99%

“…It can be seen from Figure 9a that when r CaO/C ranges from 0 to 4.5, 15 the change in the composition of product gas divides into two obvious stages. With the increase in r CaO/C , the mole fraction of H 2 increases rapidly and reaches 0.955 when r CaO/C = 1.1.…”

Section: Conceptual Design Of a Clean Ammoniamentioning

confidence: 99%

“…13,14 It is reported that the CO 2 capture efficiency of CCL can reach as high as 88%, and the reaction conversion rate of the reforming process can be up to 94%. 15 Moreover, the CCL also has the potential to achieve the energy self-consistency and even energy output to a great degree. 16,17 Nowadays, the CCL technology has been widely studied and adopted in power generation and hydrogen production processes.…”

Section: Introductionmentioning

confidence: 99%

“…Although various methods of CO 2 capture have been proposed and widely used in industries, such as adsorption, absorption, and membrane, , they are less effective to increase the hydrogen yield in the syngas production. In recent years, CO 2 capture through the Ca–Cu chemical loop (CCL) has attracted much attention due to its higher efficiency of CO 2 capture and higher hydrogen yield by promoting the synthetic gas reforming process. , It is reported that the CO 2 capture efficiency of CCL can reach as high as 88%, and the reaction conversion rate of the reforming process can be up to 94% . Moreover, the CCL also has the potential to achieve the energy self-consistency and even energy output to a great degree. , …”

Section: Introductionmentioning

confidence: 99%

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Design and Optimization of a Clean Ammonia Synthesis System Based on Biomass Gasification Coupled with a Ca–Cu Chemical Loop

Tang

Kang

Liu

2022

Ind. Eng. Chem. Res.

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This paper addresses the optimal design of a clean ammonia synthesis system based on biomass gasification coupled with a Ca–Cu chemical loop (CCL), where biomass is adopted as the feedstock and ammonia is considered as the final product. In the proposed system, the processes of biomass gasification for syngas production, CCL for CO2 capture, and ammonia synthesis are highly integrated via mass and energy flows. The optimal operating parameters are determined after exploring the effects of key parameters on the performance of the proposed system by combining process simulations with sensitivity analysis. Then, a two-step heat integration strategy including heat exchanger network synthesis and waste heat recovery is conducted to maximize the energy utilization efficiency of the whole system. Results show that the proposed clean ammonia synthesis system can not only guarantee higher CO2 capture efficiency (96.4%) and ammonia synthesis capacity (0.281 kg NH3/kg wet biomass) by using biomass, steam, and air as raw materials but also achieve self-sustained energy demand to a great extent. The economic evaluation shows that the investment cost of the system accounts for more than 90% of the total annual cost, which is about 10 times the operating cost. In addition, the cost of ammonia production is 486.01 $/ton NH3, which depends largely upon the price of biomass.

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Section: Design Of the Clean Ammonia Synthesis System Based On Simula...supporting

confidence: 83%

Section: Conceptual Design Of a Clean Ammoniamentioning

confidence: 99%

Section: Conceptual Design Of a Clean Ammoniamentioning

confidence: 99%