公开(公告)号：CA1066030A

公开(公告)日：1979-11-13

申请号：CA218338

申请日：1975-01-21

Applicant: BASF AG

Inventor： HOERAUF WERNER ,  GUENTHER ERNST ,  KISSEL ERNST ,  VALENTIN GUENTER ,  DIETRICH ERNST

IPC: C08G69/00 ,  B01D11/00 ,  B01D11/02 ,  C08G69/04 ,  C08G69/46 ,  B01J8/08

Abstract: An extraction tube for the continuous removal of low molecular weight components of polylactam granules by means of hot water by the countercurrent principle of operation, the water being fed upwardly and the granules downwardly, the tube being provided with inlets and outlets for the granules and the water and exhibiting baffles within the tube, wherein there is provided, within the tube, a heat exchanger which (a) divides the tube into two sections bearing a ratio to each other of from 50:50 to 85:15 by volume, the smaller section being at the top of the tube, (b) exhibits ducts for the granules over the entire cross-section of the tube and (c) has upper inlet surfaces leading into each duct on the upper side of said heat exchanger facing the stream of granules, said inlet surfaces being inclined to taper inwardly toward the vertical ducts at an angle .beta. to the horizontal, this angle being equal to or greater than the angle of repose of the granules but less than 90.degree., further similar heat exchangers being provided beneath said heat exchanger if desired.

公开(公告)号：CH606820A5

公开(公告)日：1978-11-15

申请号：CH368376

申请日：1976-03-24

Applicant: BASF AG

Inventor： HOERAUF WERNER DR ,  PIRZER HANS DR ,  GUENTHER ERNST ,  NEUMANN ECKART ,  DIETRICH ERNST

IPC: F15D1/02 ,  B01J1/00 ,  C08G69/16

公开(公告)号：DE2530304A1

公开(公告)日：1977-01-20

申请号：DE2530304

申请日：1975-07-08

Applicant: BASF AG

Inventor： DIETRICH ERNST ,  GUENTHER ERNST DIPL ING ,  HOERAUF WERNER DIPL ING ,  KISSEL ERNST DIPL ING ,  LINGE HERMANN DR ,  NEUMANN ECKART DIPL ING ,  SCHAEFER EBERHARD

IPC: C08G69/00 ,  B29B13/06 ,  F26B17/14 ,  F26B21/14 ,  B29B3/04

Abstract: A vertical cylinder for drying and heating granules which includes an inlet at the top of the cylinder, a conically tapered outlet at the bottom of the cylinder, a rotatable screening ring beneath the inlet, a chute beneath the screening ring and a scraper above the ring inlets for gases in the downward extending section of the cylinder, a shell and tube heat exchanger located coaxially in the bottom quarter of the cylinder, a horizontally movable grid as flow control device below the heat exchange and a discharge zone below the grid.

公开(公告)号：DE2514129A1

公开(公告)日：1976-09-30

申请号：DE2514129

申请日：1975-03-29

Applicant: BASF AG

Inventor： HOERAUF WERNER DIPL CHEM DR ,  PIRZER HANS DIPL CHEM DR ,  GUENTHER ERNST ,  NEUMANN ECKART ,  DIETRICH ERNST

IPC: F15D1/02 ,  B01J1/00

公开(公告)号：CA1083012A

公开(公告)日：1980-08-05

申请号：CA247615

申请日：1976-03-10

Applicant: BASF AG

Inventor： HOERAUF WERNER ,  PIRZER HANS ,  GUENTHER ERNST ,  NEUMANN ECKART ,  DIETRICH ERNST

IPC: F15D1/02 ,  F16K47/00

Abstract: A process and apparatus for achieving a uniform flow profile of very viscous liquids when flowing through a tube or reaction chamber. The very viscous liquid is passed through at least two sets of annular spaces arranged at axial intervals within the tube or reaction chamber, the annular spaces of each set extending concentrically with increasing diameter over the entire cross-section of the tube or reaction chamber and having the same depth in the direction of flow, the annular spaces of two consecutive sets being staggered with respect to each other as viewed in the direction of flow. The apparatus of the invention consists of a combination of two or more discs arranged at axial intervals within a tube transversely to the direction of flow, each disc consisting of a plurality of ring-shaped bands of increasing diameter, the bands being arranged freely of one another and concentrically at intervals on a grid supporting means to provide correspondingly concentric open spaces between the bands over the entire cross-section of the tube, with the walls of the bands running parallel to the direction of flow, and the bands of the separate discs being staggered with respect to each other as viewed in the direction of flow.

公开(公告)号：CA1079959A

公开(公告)日：1980-06-24

申请号：CA255180

申请日：1976-06-17

Applicant: BASF AG

Inventor： DIETRICH ERNST ,  GUENTHER ERNST ,  HOERAUF WERNER ,  KISSEL ERNST ,  LINGE HERMANN ,  NEUMANN ECKART ,  SCHAEFER EBERHARD

IPC: C08G69/00 ,  B29B13/06 ,  F26B17/14 ,  F26B21/14 ,  F26B17/12

Abstract: In a process for drying and heating nylon granules, in which the granules flow downwards through a vertical zone, hot inert gases which are free from molecular oxygen are passed in counter-current through the granules and the cooled granules are then intermittently discharged in part-streams, the improvement wherein the wet granules, or a suspension of the granules in water, are fed into the zone at the top, the granules are deposited as a layer, the water is led away, the layer of granules is then transferred into the next-lower part of the zone, the granules are there allowed to flow under gravity downwards through the zone, and inert gases which are free from molecular oxygen are passed in counter-current upwards through the granules at from 70 to 200.degree.C, with the proviso that the inert gas, before leaving the zone, is passed through the deposited layer Or granules, in the lower part of the zone the granules are divided into part-streams over the entire cross-section of the zone, these part-streams are cooled and the granules are passed intermittently, but simultaneously over the entire cross-section or the zone, into a discharge zone, with the proviso that the discharge zone is only partially filled, as well as an apparatus for carrying out the improved process.

公开(公告)号：DE2404510A1

公开(公告)日：1975-08-14

申请号：DE2404510

申请日：1974-01-31

Applicant: BASF AG

Inventor： DIETRICH ERNST ,  GUENTHER ERNST DIPL ING ,  HOERAUF WERNER DR ,  KISSEL ERNST DIPL ING ,  VALENTIN GUENTER

IPC: C08G69/00 ,  B01D11/00 ,  B01D11/02 ,  C08G69/04 ,  C08G69/46

Abstract: An extraction tube for the continuous removal of low molecular weight components of polylactam granules by means of hot water by the countercurrent principle of operation, the water being fed upwardly and the granules downwardly, the tube being provided with inlets and outlets for the granules and the water and exhibiting baffles within the tube, wherein there is provided, within the tube, a heat exchanger which A. DIVIDES THE TUBE INTO TWO SECTIONS BEARING A RATIO TO EACH OTHER OF FROM 50:50 TO 85:15 BY VOLUME, THE SMALLER SECTION BEING AT THE TOP OF THE TUBE, B. EXHIBITS DUCTS FOR THE GRANULES OVER THE ENTIRE CROSS-SECTION OF THE TUBE AND C. HAS TOP SURFACES FACING THE STREAM OF GRANULES, WHICH SURFACES ARE INCLINED TOWARD THE DUCTS TO AN ANGLE beta TO THE HORIZONTAL, THIS ANGLE BEING EQUAL TO OR GREATER THAN THE ANGLE OF REPOSE OF THE GRANULES BUT LESS THAN 90 DEG , FURTHER SIMILAR HEAT EXCHANGERS BEING PROVIDED BENEATH SAID HEAT EXCHANGER IF DESIRED.