A sustainable syngas cryogenic separation process combined with ammonia absorption refrigeration pre-cooling cycle

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F21%3APU141093" target="_blank" >RIV/00216305:26210/21:PU141093 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/abs/pii/S0959652621018308?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/abs/pii/S0959652621018308?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jclepro.2021.127612" target="_blank" >10.1016/j.jclepro.2021.127612</a>

Jazyk výsledku

angličtina

Název v původním jazyce

A sustainable syngas cryogenic separation process combined with ammonia absorption refrigeration pre-cooling cycle

Popis výsledku v původním jazyce

With the goal of effectively utilising low-grade waste compression heat by investigating potential improvements in energy efficiency, this study proposed a novel syngas liquefaction process combined with an ammonia absorption refrigeration cycle driven by available low-grade compression heat. The systems were evaluated from thermodynamics, as well as techno-economic aspects, to reduce the energy consumption and greenhouse gas emission. This study attempted to tackle two vital issues: how to effectively convert low-grade compression heat to cooling capacity to improve energy efficiency and design refrigeration cycles (both ammonia absorption refrigeration cycle and main refrigeration cycle) tailored with Heat Integration. The process was modelled, simulated, and optimised, aiming to reduce refrigerant and energy. The case study results demonstrated that the syngas liquefaction process with ammonia absorption cycle dramatically reduced the refrigerant consumption by 15.3%, contributing to a 7 MW reduction in electricity consumption. The specific energy consumption was decreased from 3.2 to 2.36. The coefficient of performance increased from 0.11 to 0.14. As for the environmental effect, the total greenhouse gas emissions were decreased from 0.12 Mt CO2-eq to 0.09 Mt CO2-eq. The exergy analysis showed that the new process decreased the total exergy destruction by 6.7 MW, leading to a higher exergy efficiency of 54.5%. In view of the economic performance, the total capital investment and total product cost were lowered by 10.8% and 20.1%. The proposed syngas liquefaction process exhibited the significant potential to improve environmental, thermodynamic, and techno-economic performances. The sensitivity analysis showed that the product cost of the new process was less sensitive to the variation of the electricity price. © 2021

Název v anglickém jazyce

A sustainable syngas cryogenic separation process combined with ammonia absorption refrigeration pre-cooling cycle

Popis výsledku anglicky

With the goal of effectively utilising low-grade waste compression heat by investigating potential improvements in energy efficiency, this study proposed a novel syngas liquefaction process combined with an ammonia absorption refrigeration cycle driven by available low-grade compression heat. The systems were evaluated from thermodynamics, as well as techno-economic aspects, to reduce the energy consumption and greenhouse gas emission. This study attempted to tackle two vital issues: how to effectively convert low-grade compression heat to cooling capacity to improve energy efficiency and design refrigeration cycles (both ammonia absorption refrigeration cycle and main refrigeration cycle) tailored with Heat Integration. The process was modelled, simulated, and optimised, aiming to reduce refrigerant and energy. The case study results demonstrated that the syngas liquefaction process with ammonia absorption cycle dramatically reduced the refrigerant consumption by 15.3%, contributing to a 7 MW reduction in electricity consumption. The specific energy consumption was decreased from 3.2 to 2.36. The coefficient of performance increased from 0.11 to 0.14. As for the environmental effect, the total greenhouse gas emissions were decreased from 0.12 Mt CO2-eq to 0.09 Mt CO2-eq. The exergy analysis showed that the new process decreased the total exergy destruction by 6.7 MW, leading to a higher exergy efficiency of 54.5%. In view of the economic performance, the total capital investment and total product cost were lowered by 10.8% and 20.1%. The proposed syngas liquefaction process exhibited the significant potential to improve environmental, thermodynamic, and techno-economic performances. The sensitivity analysis showed that the product cost of the new process was less sensitive to the variation of the electricity price. © 2021

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20704 - Energy and fuels

Projekt

<a href="/cs/project/EF15_003%2F0000456" target="_blank" >EF15_003/0000456: Laboratoř integrace procesů pro trvalou udržitelnost</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Cleaner Production

ISSN

0959-6526

e-ISSN

1879-1786

Svazek periodika

neuveden

Číslo periodika v rámci svazku

313

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

13

Strana od-do

127612-127612

Kód UT WoS článku

000683808700003

EID výsledku v databázi Scopus

2-s2.0-85108068424