Enabling pre-combustion plants—the DECARBit project

Røkke, Nils A.; Langørgen, Øyvind

doi:10.1016/j.egypro.2009.01.188

Cited by 12 publications

(7 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The adiabatic flame temperature of a H 2 flame is higher than that of natural gas (∼150 K higher) , CH 4 , and C 3 H 8 at the same stoichiometry, as shown in Table . Based on the higher adiabatic flame temperature of H 2 compared to CH 4, more than 3 times the thermal NO production is projected . The adiabatic flame temperature is a most important indicator of the NO x emissions.…”

Section: Combustion Propertiesmentioning

confidence: 99%

“…A sub-project carried out together with Alstom, investigated the combustion of H 2 , experimentally, in their sequential environmental combustor, which was implemented in the GT24 and GT26 gas turbines (see Table ). Details on the investigations that were carried out are reported in the literature. , …”

Section: Competing Interests In the Development Of H2 Gas Turbine Tec...mentioning

confidence: 99%

“…Recently, the focus of combustion systems research has shifted toward the development of combustion technologies for hydrogen/syngas operation downstream of Integrated Coal Gasification Combined Cycle (IGCC) systems. ,− For integrated coal gasification, the coal is gasified, CO 2 is captured, and almost pure H 2 becomes available for combustion in gas turbines.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Reviewing H₂ Combustion: A Case Study for Non-Fuel-Cell Power Systems and Safety in Passive Autocatalytic Recombiners

2018

View full text Add to dashboard Cite

This Review looks at past and current research and development (R&D) on H2 combustion in terms of power generation in gas turbines and safety in passive autocatalytic recombiners (PARs). The drive toward reducing greenhouse gas emissions has forced researchers to look at carbon-free alternatives for power generation. Fortunately, H2 is one such fuel source and has been proposed as a fuel in gas turbines for large-scale power production. The effects of H2 on the heating values, flame speed, burning velocity, flammability range, flashback, blow-off, ignition delay, and emissions have been reported, and the trends and gaps in R&D identified. Properties such as flame speed, burning velocities, and flammability limits at typical gas turbine conditions (high pressures, high temperatures, lean equivalence ratios, and turbulent conditions) still need to be determined experimentally for H2 fuel mixtures, especially for mixtures with higher H2 concentrations and fuel mixtures with other fuels (such as biogas) as an evolutionary step toward adapting to a hydrogen economy. Much work has been done on pre-mixed dry low emissions and diffusion combustion with dilution as means of accommodating high hydrogen content (HHC) fuels. Staged combustion, vortex-stabilized combustion, multiple injection combustion, and catalytic combustion have been proposed for HHC fuels, yet still further R&D is required. Finally, oxy-fuel combustion provides a promising technology for HHC fuels, and researchers should focus on its testing and development. Although H2 is a good alternative to carbon-based fuel, its unique properties increase the probability of a fire hazard. Toward developing a hydrogen economy, we also need to ensure the safety of H2. Unfortunately, in unique scenarios, for instance in closed areas, venting and detection measures are no long adequate, nor possible, to ensure safety. Other intervention methods are required. H2 combustion in PARs is well known in the nuclear industry, but PARs can also be used for flammable gas control in other applications. The current status quo of PARs is discussed. Understanding and developing robust PARs for nuclear applications as well as alternative applications is vital for establishing a hydrogen economy. Gas turbine technologies that are H2 compatible have attracted much attention worldwide, within both academia and industry, especially in the U.S., Europe, and some Asian countries. Presently, the key role-players in this field are the U.S. Department of Energy, Hitachi, Kawasaki, Siemens, and General Electric. Some of the initiatives toward developing H2 gas turbines are discussed, with the strongest being the potential use in clean integrated coal gasification combined cycle applications.

show abstract

Section: Combustion Propertiesmentioning

confidence: 99%

Section: Competing Interests In the Development Of H2 Gas Turbine Tec...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Reviewing H₂ Combustion: A Case Study for Non-Fuel-Cell Power Systems and Safety in Passive Autocatalytic Recombiners

2018

View full text Add to dashboard Cite

show abstract

“…The integration of carbon capture and storage supply chain with carbon capture and utilization supply chain has been considered. 7 The following strategies for carbon capture are used: post-combustion, 8 pre-combustion, 9 oxy-fuel combustion, 10 and chemical looping combustion. 11 Carbon dioxide can be stored in geological formations such as depleted oil or gas reservoirs, saline aquifers, or can be dissolved into seawater.…”

Section: Introductionmentioning

confidence: 99%

Scenario Analysis of Carbon Capture, Utilization (Particularly Producing Methane and Methanol), and Storage (CCUS) Systems

Leonzio

Foscolo

Zondervan

et al. 2020

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

Carbon capture utilization and storage (CCUS) supply chains are expected to play an important role in the near future for greenhouse gas reduction. Reuse by chemical transformation has become an important way of reducing emissions, and this study explores this as an option. A more complete and realistic objective function than in previous studies is considered and minimized to determine optimal designs for CCUS systems. The objective function consists of remission of an element of carbon tax, economic incentives, and revenues subtracted from total supply chain costs. Carbon supply chains were analyzed for Italy and Germany. In the first case, the captured carbon dioxide is stored and used to produce methane, whereas, in the second case, the captured carbon dioxide is stored and used to produce methanol in one case, and more products in another case. The most significant values of cost parameters for the market prevailing in recent years are considered in a sensitivity analysis. Results show that the carbon tax influences only the total value of the objective function value, while economic incentives and revenues have a significant effect also on the topology of the supply chain. Model optimization is a useful decision support tool for CCUS supply chain design and related investment decisions.

show abstract

“…In case of a coal-based IGCC, additional nitrogen is required to transport coal into the gasifier. 1 The purified oxygen and nitrogen are usually obtained using cryogenic distillation of air. 2,3 1.1.…”

Section: Introductionmentioning

confidence: 99%

Improving the Heat Integration of Distillation Columns in a Cryogenic Air Separation Unit

Ham

Kjelstrup

2011

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

The distillation columns of a two-column cryogenic air separation unit (ASU) are responsible for a considerable part of the total ASU inefficiencies. The efficiency of a conventional distillation column can be increased by distributing the reboiler and condenser duties over a larger part of its length. In an ASU, this can be realized by moving the low-pressure column (LPC) down along the high-pressure column (HPC), thus increasing the number of heat-integrated stages (HI stages). We present an assessment of the effect that such an intensification of the heat integration has on the performance of the ASU distillation section, using the entropy production as performance criterion. When keeping the operating pressures fixed, the entropy production in the LPC is replaced by entropy production in the HI stages, without affecting the total entropy production. Reducing the pressure ratio enables a reduction in the LPC entropy production without increasing the contribution of the HI stages. For a probable value of the heattransfer capacity per stage, increasing the pressure in the LPC results in a decrease of 21% in the total entropy production, while decreasing the pressure in the HPC results in a decrease of 23%. Decreasing the pressure in the HPC when using an opportunistic heat-transfer capacity yields a decrease of 31%. The reductions in entropy production materialize eventually as changes in the required ASU compressor, pump, and expander duties. Compared to the addition of either an additional heat exchanger or an additional distillation column, the use of HI stages seems to be the most promising method for improving the thermodynamic performance of a cryogenic ASU. More-detailed experimental data are required to simulate heat-integrated distillation columns accurately.

show abstract

Enabling pre-combustion plants—the DECARBit project

Cited by 12 publications

References 6 publications

Reviewing H₂ Combustion: A Case Study for Non-Fuel-Cell Power Systems and Safety in Passive Autocatalytic Recombiners

Reviewing H₂ Combustion: A Case Study for Non-Fuel-Cell Power Systems and Safety in Passive Autocatalytic Recombiners

Scenario Analysis of Carbon Capture, Utilization (Particularly Producing Methane and Methanol), and Storage (CCUS) Systems

Improving the Heat Integration of Distillation Columns in a Cryogenic Air Separation Unit

Contact Info

Product

Resources

About

Enabling pre-combustion plants—the DECARBit project

Cited by 12 publications

References 6 publications

Reviewing H2 Combustion: A Case Study for Non-Fuel-Cell Power Systems and Safety in Passive Autocatalytic Recombiners

Reviewing H2 Combustion: A Case Study for Non-Fuel-Cell Power Systems and Safety in Passive Autocatalytic Recombiners

Scenario Analysis of Carbon Capture, Utilization (Particularly Producing Methane and Methanol), and Storage (CCUS) Systems

Improving the Heat Integration of Distillation Columns in a Cryogenic Air Separation Unit

Contact Info

Product

Resources

About

Reviewing H₂ Combustion: A Case Study for Non-Fuel-Cell Power Systems and Safety in Passive Autocatalytic Recombiners

Reviewing H₂ Combustion: A Case Study for Non-Fuel-Cell Power Systems and Safety in Passive Autocatalytic Recombiners