Effects of sulfur emission controls on the cost of gasification combined cycle power systems. Final report

Feerrar, S.; Joiner, J.; Kellard, J.; McElmurry, B.

doi:10.2172/6349986

Cited by 2 publications

(7 citation statements)

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“…Some of these sorbent options will also provide additional Stage II sulfur and halogen removal. Tables 4.63,4.64,and 4.65 list the major factors for comparison between the novel gas cleaning processes and the conventional processes for the two applications. Each table lists key process factors, environmental factors and economic factors.…”

Section: Resultsmentioning

confidence: 99%

“…Based on the above, using an approach similar to the continuous measurement of HCl might not be possible for H 2 S. The need to allow at least 30 minutes for the oxidation of H 2 S to SO 4 2limited the frequency of sampling. A different approach was suggested, where the effluent gas containing trace levels of H 2 S would be periodically sampled for a predetermined period.…”

Section: -mentioning

confidence: 99%

“…Various concentrations of the basic component (i.e., sodium hydroxide) and the oxidizer (i.e., hydrogen peroxide) would be evaluated. A strong oxidizing solution might produce peaks that would shadow the SO 4 2peak and prevent it from being measured. Therefore, the amount of the oxidizer in the scavenger solution would be optimized to provide acceptable oxidation of H 2 S, while preventing any conflicts with the IC measurement method.…”

Section: -mentioning

confidence: 99%

“…A certified gas mixture containing about 0.5 ppmv H 2 S in N 2 was ordered for these efforts; the mixture received contained 0.8 ppmv H 2 S. To make a quick assessment of this approach, three sets of tests were conducted during March. First, the effectiveness of absorber solution for H 2 S capture and oxidation to SO 4 2was investigated as a function of H 2 S concentration in the inlet gas. The certified gas mixture was diluted with N 2 to produce H 2 S-N 2 mixtures containing approximately 360 ppbv, 219 ppbv, and 118 ppbv.…”

Section: Appendix B -Trace Level H 2 S Gas Sampling Techniques and Mementioning

confidence: 99%

“…The results obtained are summarized in Table B1. Based on the measured SO 4 2concentration in liquid samples, the corresponding H 2 S concentration in the gas phase can be calculated. This value is reported in Table B1 as a percentage of the inlet concentration.…”

Section: Appendix B -Trace Level H 2 S Gas Sampling Techniques and Mementioning

confidence: 99%

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Novel Gas Cleaning/Conditioning for Integrated Gasification Combined Cycle

Newby¹,

Lippert²,

Slimane³

et al. 2001

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Coal gasification can generate hydrocarbon gases that may be utilized for the synthesis of chemicals or liquid fuels, or for fuel cell power generation, if extensive, deep syngas cleaning is first conducted. Conventional gas cleaning technology for this duty is expensive and may limit the feasibility of coal usage for such applications. The Siemens Westinghouse Power Corporation has proposed a novel scheme for polishing sulfur, halide, and particulate from gases to meet very stringent cleaning requirements for chemical synthesis, or for fuel cell power generation. This "Ultra-Clean" gas polishing process is a dry process, injecting fine sulfur and halide sorbent particles into two stages of barrier filter-reactors, or granular bed filter-reactors, to accomplished the gas polishing by dry sorbent adsorption of the contaminants. The sorbent materials for each stage, their feed rates, and the two stage temperatures must be specified to satisfy the gas cleaning requirements of any specific application, with the process having the potential for sulfur species less than 60 ppbv, halides less than 10 ppbv, and particulate less than 0.1 ppmw.The Base Program experimental activities described in this report have been completed to identify candidate sorbents and suitable operating conditions for each of the two stages of the Ultra-Clean process. The laboratory process simulation testing has identified a set of zinc-based and sodium-based, -325 mesh sorbents for each of the two stages that yield the performance potential for meeting the most stringent gas cleaning requirements. With these selected sorbents, the Stage I temperature is 499 C (930 F) and the Stage II temperature is 288 C (550 F).Conceptual commercial process evaluation of a novel gas cleaning process that utilizes the Ultra-Clean gas polishing process has been performed to devise potentially viable process details for two applications: a general chemical or liquid fuel synthesis application, and a solid oxide fuel cell power generation application. Commercial process performance and economics have been estimated for this novel gas cleaning process. The results indicate promising performance and economic potential compared to the conventional, Rectisol-based, gas cleaning technology. Sorbent maximum acceptable consumption criteria have been extracted from the commercial process evaluations and show that relatively high, once-through sorbent feed rates can be economically viable in the Ultra-Clean gas polishing process. The process can also incorporate ammonia removal and mercury removal. The next phase of the program will conduct integrated, bench-scale testing of the Ultra-Clean syngas polishing process on a sub-scale coal gasifier.iii

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Section: Resultsmentioning

confidence: 99%

Section: -mentioning

confidence: 99%

Section: -mentioning

confidence: 99%

Section: Appendix B -Trace Level H 2 S Gas Sampling Techniques and Mementioning

confidence: 99%

Section: Appendix B -Trace Level H 2 S Gas Sampling Techniques and Mementioning

confidence: 99%

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Novel Gas Cleaning/Conditioning for Integrated Gasification Combined Cycle

Newby¹,

Lippert²,

Slimane³

et al. 2001

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An Evaluation of a Partial Oxidation Concept for Combustion Turbine Power Systems

Newby

Yang

Bannister

1997

ASME 1997 Turbo Asia Conference

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In the partial oxidation concept, a high pressure, low-heating-value fuel gas is generated by partially combusting fuel with air. This fuel gas is expanded in a high-pressure turbine prior to being burned in a second-stage, conventional combustion turbine. This process reduces the specific air requirements of the power system and increases the power output. The performance, practicality, and cost of a heavy duty combustion turbine power system incorporating partial oxidation (PO) of natural gas has been estimated to assess the potential merits of this technology. Compared to conventional combustion turbine power cycles, the PO power cycle shows the potential for significant plant heat rate and cost-of-electricity improvements. However, significant development remains to verify and commercialize PO for combustion turbine power systems.

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Effects of sulfur emission controls on the cost of gasification combined cycle power systems. Final report

Cited by 2 publications

References 0 publications

Novel Gas Cleaning/Conditioning for Integrated Gasification Combined Cycle

Novel Gas Cleaning/Conditioning for Integrated Gasification Combined Cycle

An Evaluation of a Partial Oxidation Concept for Combustion Turbine Power Systems

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