Separation of tar sediments
For better environmental protection, charging of coking plants is now carried out with the coke oven connected to the collecting main. This causes the raw tar to be degraded by coal dust and other particulates. These solids reduce the container volume and impede disposal of the tar sediments. In this research programme a three-phase centrifuge to clean the tar generated in a coking plant was tested under normal operating conditions. An important consideration was that solid matter extracted by the centrifuge should be easy to handle. To optimise the installation for use in continuous coking operation, three pieces of equipment to regulate the feed flow were tested: (i) fixed-cycle solenoid valve; (ii) eccentric scroll pump (speed controlled); (iii) disk piston pump (speed-controlled). Only the disk piston pump proved suitable for continuous operation. The reliability of the centrifuge was also put to the test. In spite of considerable fluctuation in the water content of the feed, the performance of the centrifuge in separating liquid phases was excellent.
Bibliographic Reference: EUR 14265 DE (1992) 58 pp., MF, ECU 4, blow-up copy ECU 6
Record Number: 199211230 / Last updated on: 1994-11-29
Original language: de
Available languages: de