METHOD OF SLUICING VARIOUS OBJECTS AND SUBSTANCES AT HIGH AND SUPERHIGH PRESSURES Russian patent published in 2003 - IPC

FIELD: power engineering; chemical technology; mechanical engineering; farming. SUBSTANCE: container with material to be subjected to sluicing is placed on receiving site of inner hoist; use is also made of outer hoist for hoisting lower sluice gate for connecting it with sluice chamber , thus forming initial power hold-down of gate which is then rigidly secured; zone of sealing joint of gate is embraced by hermetic chamber introduced additionally ; then joint surfaces of gates are released from contact sealing and power loads are retained on gate; residual contact pressure is reduced to minimum level sufficient for coupling or sealing performed by additional chamber filled with liquid agent on side of high pressure; then liquid agent is cooled till hardening; at upper level, this agent is heated and is kept in liquid state for hydrodynamic sealing of joints of lower gate of sluice chamber; then pressure in sluice chamber is raised for equalizing with pressure in technological space above upper sluice gate which was sealed-up preliminarily; then it is heated for thawing-out and complete liquefaction; upper sluice gate relieved from back pressure and unsealed is opened inside technological space and container with material is raised to level of technological site, shifted and/or tilted to operating position after which container is placed on receiving platform of inter-sluice hoist for withdrawal from space at high and superhigh pressure reversing the procedure of sluicing. EFFECT: enhanced efficiency; enhanced ecological safety. 6 cl, 3 dwg