The Potential of Energy Savings in Oxygen Production by Pressure Swing Adsorption

Kód výsledku v IS VaVaI

RIV/68407700:21220/21:00350191 - isvavai.cz

Výsledek na webu

https://doi.org/10.3303/CET2186053

DOI - Digital Object Identifier

10.3303/CET2186053

Jazyk výsledku

angličtina

Název v původním jazyce

The Potential of Energy Savings in Oxygen Production by Pressure Swing Adsorption

Popis výsledku v původním jazyce

The pressure swing adsorption (PSA) units are widely used as an oxygen source. The second PSA unit outgoing stream contains a dry mixture of O2 in N2 that is mostly exhausted into the atmosphere. Utilization of this stream's potential and waste compression heat leads to an increase in the unit's overall energetic capacity and the ecologically more friendly processing. This paper aims to demonstrate the above-described possibilities in the case of the oxy-fuel combustion unit. The following four options for integrating PSA technology were analyzed: i) single or dual compression, ii) utilization of waste compression heat for coal or biomass dewatering, iii) utilization of dry waste gas from the PSA unit for coal or biomass dewatering, and iv) energy recovery by an expansion of pressurized oxygen before combustion. The greatest potential for practical application was found for the usage of dual compression (saving of 10 % of electricity) and utilization of waste compression heat for coal or biomass dewatering. In this case, the saving of 5.3 % and 10.4 % of lignite and wood respectively can be reached depending on fuel moisture for reference fuel conditions.

Název v anglickém jazyce

The Potential of Energy Savings in Oxygen Production by Pressure Swing Adsorption

Popis výsledku anglicky

The pressure swing adsorption (PSA) units are widely used as an oxygen source. The second PSA unit outgoing stream contains a dry mixture of O2 in N2 that is mostly exhausted into the atmosphere. Utilization of this stream's potential and waste compression heat leads to an increase in the unit's overall energetic capacity and the ecologically more friendly processing. This paper aims to demonstrate the above-described possibilities in the case of the oxy-fuel combustion unit. The following four options for integrating PSA technology were analyzed: i) single or dual compression, ii) utilization of waste compression heat for coal or biomass dewatering, iii) utilization of dry waste gas from the PSA unit for coal or biomass dewatering, and iv) energy recovery by an expansion of pressurized oxygen before combustion. The greatest potential for practical application was found for the usage of dual compression (saving of 10 % of electricity) and utilization of waste compression heat for coal or biomass dewatering. In this case, the saving of 5.3 % and 10.4 % of lignite and wood respectively can be reached depending on fuel moisture for reference fuel conditions.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

20402 - Chemical process engineering

Projekt

EF16_019/0000753: Centrum výzkumu nízkouhlíkových energetických technologií

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

CHEMICAL ENGINEERING TRANSACTIONS

ISSN

2283-9216

e-ISSN

2283-9216

Svazek periodika

86

Číslo periodika v rámci svazku

053

Stát vydavatele periodika

IT - Italská republika

Počet stran výsledku

6

Strana od-do

313-318

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-85109706036