CNG acid gas removal process. Technical progress report No. 2, 1 February-30 April 1981
During the second quarter of the CNG Acid Gas Removal Project, 4 subtasks were active. Within Subtask 1.1, melter design studies were performed to identify methods of improving melting rates in the CNG crystallizer. Greatly enhanced melting rates are thought possible with a melter configuration that excludes liquid carbon dioxide from the melting region and allows more intimate contact of the vapor and solid carbon dioxide. Also within Subtask 1.1, a review of triple-point desalination process literature was completed. Within Subtask 2.2, reconstruction and testing of the vapor-liquid solid equilibrium apparatus is nearly complete. Test operation with the carbon dioxide - ethylene binary system produced data in excellent agreement with published data for this system. The increased sample volume permitted minimum disturbance of the equilibrium states, and vapor-recirculation agitation permitted rapid attainment of equilibrium. Within Subtask 2.3, the original CNG crystallizer is being reactivated to measure separation factors for carbonyl sulfide and trace contaminants. Primary efforts to date have focused on reactivation of the crystallizer. However, a successful run with pure carbon dioxide was achieved late in April. Within Subtask 3.1, conceptual studies to assess treatment of low carbon dioxide crude gases focused on three processes: (1) a precompression process to boost the partial pressure of carbon dioxide; (2) a modified non-selective physical absorption process; and (3) a modified non-selective physical absorption process with solvent slurry. None of these three processes are as attractive as the modified physical absorption process incorporating the CNG crystallizer reported in the fist quarterly report. 12 references, 6 figures, 1 table.
- Research Organization:
- Helipump Corp., Cleveland, OH (USA)
- DOE Contract Number:
- AC21-80MC14399
- OSTI ID:
- 6662502
- Report Number(s):
- DOE/MC/14399-T1; ON: DE81027814
- Country of Publication:
- United States
- Language:
- English
Similar Records
CNG acid gas removal process. Technical progress report No. 10, February 1-April 30, 1983
CNG acid gas removal process. Technical progress report No. 9, November 1, 1982-January 31, 1983
Related Subjects
CARBON DIOXIDE
CRYSTALLIZATION
PHASE DIAGRAMS
PHASE STUDIES
REMOVAL
CNG PROCESS
ENGINEERING
ETHYLENE
FUEL GAS
PURIFICATION
HYDROGEN SULFIDES
KETONES
ABSORPTION
CARBON OXYSULFIDE
COAL GASIFICATION
EQUILIBRIUM
EXPERIMENTAL DATA
LIQUIDS
RESEARCH PROGRAMS
VAPORS
WATER REMOVAL
ALKENES
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
DATA
DIAGRAMS
FLUIDS
FUELS
GAS FUELS
GASES
GASIFICATION
HYDROCARBONS
HYDROGEN COMPOUNDS
INFORMATION
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
SEPARATION PROCESSES
SULFIDES
SULFUR COMPOUNDS
THERMOCHEMICAL PROCESSES
010404* - Coal
Lignite
& Peat- Gasification
010402 - Coal
Lignite
& Peat- Purification & Upgrading