SIMULATED MOVING BED SEPARATION DEVICE AND METHOD WITH EXTENDED JET BREAKER

    公开(公告)号:US20230093889A1

    公开(公告)日:2023-03-30

    申请号:US17956291

    申请日:2022-09-29

    IPC分类号: B01D15/18 B01D15/20 B01D15/42

    摘要: Distribution and collection panel comprising an upper screen (4), a collector (5), a separation plate (6) with outlet openings (11), a distributor (7), a lower screen (8), an injection/withdrawal tank (9) adjacent to the separation plate, and a jet breaker element (12) perpendicular to the flow (E) of a main fluid and comprising two solid jet breaker plates (13) that are: extended on either side of the injection/withdrawal tank; juxtaposed with the lower screen; disposed beneath the outlet openings (11); designed to direct the main fluid in the distributor in a direction orthogonal to the direction of the flow (E), the ratio I/L of the width I of the solid jet breaker plate to the width L of the lateral part of the separation plate being at least 0.1.

    Method for producing an alumina gel having a high dispersibility and a specific crystallite size

    公开(公告)号:US11577964B2

    公开(公告)日:2023-02-14

    申请号:US17011611

    申请日:2020-09-03

    摘要: Process for preparing alumina gel in a single precipitation step consisting of dissolving an aluminium precursor, aluminium chloride, in water, at a temperature of 10° C. to 90° C. such that the pH of the solution is from 0.5 to 5, for a period of 2 to 60 minutes, then adjusting the pH to 7.5 to 9.5 by adding a basic precursor, sodium hydroxide, to the solution obtained to obtain a suspension, at a temperature of 5° C. to 35° C., and for 5 minutes to 5 hours, followed by a filtration step, said process not comprising any washing steps. Also, novel alumina gel having a high dispersibility index, in particular a dispersibility index of more than 80%, a crystallite dimension of 0.5 to 10 nm, a chlorine content of 0.001% to 2% by weight and a sodium content of 0.001% to 2% by weight, the percentages by weight being expressed with respect to the total weight of the alumina gel.