Method and apparatus for the selective separation of gaseous coal gasification products by pressure swing adsorption

Patent · Tue Sep 29 00:00:00 EDT 1987

OSTI ID:5838149

Ghate, M H; Yang, R T

This patent describes the method for bulk separation of multi-component gases generated in a coal gasification process wherein coal is gasified in a gasifier to produce gasification products including a mixture of gases comprising hydrogen, carbon monoxide, methane, and acid gas components carbon dioxide and hydrogen sulfide. It consists of the steps of conveying a stream comprising the mixture of gases into one end of an elongated column containing a solid adsorbent for each of the gases forming the mixture of gases and pressurizing the charge of gases within the column to a pressure within a range sufficient to effect the adsorption by the adsorbent of the conveyed gases including the hydrogen defining the least absorbable gas in the mixture of gases. Then, decreasing the partial pressure of the charge of gases in the column to effect the sequential desorption of the gases hydrogen, carbon monoxide, and methane from the adsorbent in the column, and conveying the adsorbed gases from the column upon desorption thereof from the adsorbent.

• Assignee: Dept. of Energy, Washington, DC
• Patent Number(s): US 4696680
• OSTI ID: 5838149
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404* -- Coal
Lignite
& Peat-- Gasification
ABSORPTION
ADSORBENTS
ADSORPTION
ALKANES
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL COMPOSITION
COAL GAS
COAL GASIFICATION
DEGASSING
DESORPTION
ELEMENTS
FLUIDS
GASES
GASIFICATION
HYDROCARBONS
HYDROGEN
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
METHANE
NONMETALS
ORGANIC ACIDS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PRESSURE DEPENDENCE
PRESSURIZING
PROCESSING
PRODUCTION
RECOVERY
SEPARATION EQUIPMENT
SEPARATION PROCESSES
SOLIDS
SORPTION
SULFIDES
SULFUR COMPOUNDS
THERMOCHEMICAL PROCESSES