Two-stage process and apparatus for the separation of tar
AssigneeKrupp-Koppers GmbH
InventorsNorbert Deuser, Friedrich-Paul Austermuhle
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Abstract
A two-stage process for the separation of tar, from the condensates which result from the cooling of coke oven or generator gas, is disclosed along with the apparatus for carrying out the process. The condensates are first separated in a preliminary stage into a water phase, a tar phase and a thick tar phase. The tar phase is then further dehydrated in a pressure separator.
Claims7
A two-stage process for the separation of coal tar from the tar-containing condensates obtained from the cooling of gases, which are the result of the coking of coal, comprising:
- (a) separating said condensates into an uppermost first level water phase, an intermediate second level coal tar phase, and a bottom third level thick tar phase which contains particles of coal and coke, within a vessel;
- (b) removing said water phase from said vessel;
- (c) mechanically conveying said thick tar phase from said vessel into a receptacle;
- (d) conveying said coal tar phase to a pressurized separator;
- (e) separating said coal tar phase into an uppermost first level of water, an intermediate second level of coal tar, and a bottom third level of thick tar at a minimum pressure of 1.5 atmospheres absolute and a minimum temperature of 60.degree. C. within said pressurized separator;
- (f) removing said water from said pressurized separator;
- (g) mechanically conveying said thick tar from said pressurized separator;
- (h) recirculating said thick tar to said vessel;
- (i) mechanically conveying said thick tar from said vessel to said receptacle;
- (j) removing said coal tar from said pressurized separator;
- and
- (k) conveying said coal tar to means for further refinement.
Apparatus for conducting a two-stage process for the separation of coal tar from the tar-containing condensates obtained from the cooling of gases, which are the result of the coking of coal, comprising:
- (a) means for separating said condensates into an uppermost first level water phase, an intermediate second level tar phase, and a bottom third level thick tar phase which contains particles of coal and coke, within a vessel;
- (b) means for removing said water phase from said vessel;
- (c) means for mechanically conveying said thick tar phase from said vessel into a receptacle;
- (d) means for conveying said coal tar phase to
- (e) pressurized separator means operable to separate said coal tar phase into an uppermost first level of water, an intermediate second level of coal tar, and a bottom third level of thick tar, at a minimum pressure of 1.5 atmospheres absolute and a minimum temperature of 60.degree. C. within said pressurized separator means;
- (f) means for removing said water from said pressurized separator means;
- (g) means for mechanically conveying said thick tar from said pressurized separator means;
- (h) means for recirculating said thick tar to said vessel;
- (i) means for mechanically conveying said thick tar from said vessel to said receptacle;
- (j) means for removing said coal tar from said pressurized separator means;
- and
- (k) means for conveying said coal tar to means for further refinement.
Dependencies are inferred from the claim text.