Sustainable Energy Technologies and Assessments, Journal Year: 2023, Volume and Issue: 60, P. 103453 - 103453
Published: Sept. 13, 2023
Language: Английский
Applied Thermal Engineering, Journal Year: 2022, Volume and Issue: 214, P. 118880 - 118880
Published: June 18, 2022
Textile manufacturing discharges large amounts of wastewater containing significant thermal energy. The textile dyeing process consists several complex processes with different operating times, temperatures, and water usage. absence a suitable heat recovery (WWHR) system requires amount energy for heating fresh cooling wastewater. Therefore, recovering while satisfying the conditions each is crucial. Herein, we suggest an optimal design WWHR systems to maximize efficiency in using pinch analysis by novel two-step approach. First, scenarios all feasible methods were defined, designed accordingly integrating pump exchanger. Second, exchanger network developed was modified based on waste-heat efficiency. Finally, derive cost-optimal system, techno-economic conducted. total annualized cost (TAC), capital cost, determined current potential future economies. proposed energy-saving measures reduced TAC 28.6% obtained payback period up 4.3 y.
Language: Английский
Citations
20
Desalination, Journal Year: 2022, Volume and Issue: 548, P. 116284 - 116284
Published: Dec. 2, 2022
Steam methane reforming (SMR) process is facing serious greenhouse effect problems because of the significant CO2 emissions. To reduce pollution caused by gaseous emissions, desalination wastewater can be used it contains highly concentrated useful mineral ions such as Ca2+, Mg2+, and Na+, which react with carbonate ions. This study proposes a novel SMR for carbon-neutral hydrogen production integrated wastewater-based utilization. A model design proposed; comprises following steps: (1) production; (2) recovery In model, from was captured using Na+ ion, ionic carbonated Ca2+ Mg2+ in wastewater. The levelized cost (LCOH) assessed to demonstrate economic feasibility proposed process. Therefore, 94.5 % captured, conversion MgCO3 CaCO3 determined 60 99 %, respectively. addition, emission via 0.016 kgCO2/kgH2, LCOH calculated 2.6 USD/kgH2.
Language: Английский
Citations
20
Energy Conversion and Management X, Journal Year: 2025, Volume and Issue: unknown, P. 100882 - 100882
Published: Jan. 1, 2025
Language: Английский
Citations
0
Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: unknown, P. 115983 - 115983
Published: Feb. 1, 2025
Language: Английский
Citations
0
Energies, Journal Year: 2022, Volume and Issue: 15(9), P. 3090 - 3090
Published: April 23, 2022
Reactive dyeing is primarily used in the textile industry to achieve a high level of productivity for high-quality products. This method requires heating large amount freshwater and cooling biological treatment discharged wastewater. If heat wastewater from recovered, energy can be significantly reduced. However, efficiency this remains low, owing limited use waste heat. Hence, study suggested cost-optimal exchanger network (HEN) pump-assisted recovery system with maximizing simultaneously. A novel two-step approach was develop optimal HEN system. In first step, designed integrate pump recover effectively. second newly developed retrofitted using super-targeted pinch analysis minimize cost maximize As result, proposed reduced total annualized by up 43.07% as compared conventional lacking These findings may facilitate economic environmental improvements industry.
Language: Английский
Citations
18
Renewable Energy, Journal Year: 2022, Volume and Issue: 190, P. 1006 - 1017
Published: March 30, 2022
The black liquor is valuable biomass that can be recycled in the form of CO2-neutral fuels and burned recovery boiler furnaces to produce steam for power generation. However, combustion results a large amount ash deposits, which reduce heat transfer efficiency. Therefore, all boilers have an deposit removal system (ADRS). its operation inefficient, significant amounts energy are wasted, CO2 emissions increased. To solve these problems, this study addressed optimizing ADRS maximize recycling as renewable reduction. This mainly consists two parts. First, predict generation, process model with was developed, used define mathematical equations. Second, proposed recycling. increase calculated by multiplying net generation saved biomass. As result, 16.135 ton/d saved, were decreased 541–996 ton/y following 2,987 MWh/y present value $ 16,797,303.
Language: Английский
Citations
15
Desalination, Journal Year: 2022, Volume and Issue: 540, P. 115995 - 115995
Published: Aug. 4, 2022
Considerable seawater bittern is produced during salt production. Seawater can be used to reduce CO2 and SOx because of the presence valuable mineral ions, such as K+ Mg2+, which react with carbonate sulfate ions present in high concentrations. In this study, a novel recovery process proposed for utilization. The has following steps: (1) metal ion separation produce KOH Mg(OH)2; (2) capture utilization using generated (3) KOH. pay-back period (PBP) was calculated verify economic feasibility process. results revealed an efficiency approximately 99 % 98 %, respectively. Furthermore, annual net revenue 153,439 USD/y based on profit obtained from product savings absorbent. Thus, PBP 6.2 y.
Language: Английский
Citations
15
Desalination, Journal Year: 2023, Volume and Issue: 558, P. 116612 - 116612
Published: April 15, 2023
Language: Английский
Citations
8
Journal of Cleaner Production, Journal Year: 2022, Volume and Issue: 367, P. 133048 - 133048
Published: July 11, 2022
In the pulping process, recovery boiler produces "green" steam without use of fossil fuels as it burns biomass (black liquor). However, because black liquor concentration generated during woodchip cooking is not suitable for combustion, concentrated using an evaporator that uses a large amount energy evaporation. The sprayed to burn in furnace, and combustion air simultaneously supplied through distribution system. Biomass should be optimized realize sustainable cleaner production by maximizing recycling efficiency. this study, optimal operating conditions system pulp mill were determined efficiency maximization. First, process model was developed integrating furnace with Using model, consumption evaporator, generation boiler, recycled chemicals predicted profit cost estimation. Second, mathematical derive conditions. net calculated subtracting evaporation from recovered chemicals. Finally, maximize profit. As result, derived increased annual power 7,491 MWh/y 68,602 t/y. addition, 11.82%, CO2 emissions decreased 2,504 1,361 tons, making more sustainable. findings study promote substituting
Language: Английский
Citations
13
Sustainable Energy Technologies and Assessments, Journal Year: 2023, Volume and Issue: 60, P. 103560 - 103560
Published: Nov. 30, 2023
Heat pumps will play an important role in improving the performance of industrial processes aiming to decarbonize their heating requirements. Yet, defining best operating conditions those devices may be a challenging task, as they are embedded larger energy conversion systems and direct competition with fired electric heaters other waste heat recovery systems. The costs inputs also influence selection either pump or gas boiler, which affects overall efficiency incremental cost final solution. Thus, systematic analysis must applied order determine option supply requirement, without considerably impacting operational feasibility plant. In this work, base-case two applications intensive demand, namely, solvent regeneration process carbon capture unit black liquor concentration kraft pulp mill, compared that scenarios high temperature mechanical vapor recompression integrated, reduce consumption environmental impact. benefits integration over conventional reboiler multiple effect evaporation system discussed light thermodynamic, economic indicators. As result, alternative approaches remain competitive vis-à-vis solutions terms costs. addition, emissions associated could reduced by 45% if is integrated. optimized solution using has exergy 9% higher typical configuration ammonia mills, slightly scenario system.
Language: Английский
Citations
6