Multistage arrangement for countercurrent separation and methods

Details Multistage arrangement for countercurrent separation and methods Multistage arrangement for countercurrent separation and methods

1987-07-31

1988-07-05

Sever, Frank

Liquid purification or separation

Tangential flow or centrifugal fluid action

Multiple cyclone

209144, 209211, B01D 17038

Patent

active

047552956

ABSTRACT:
A multistage arrangement for countercurrent separation of suspended solids, such as crystals, by means of hydro-cyclone groups connected in series and corresponding pumps and pump wells. For operating with relatively small expenditures with respect to apparatus under high pressures and at high temperatures within a certain, limited temperature range, the hydro-cyclone groups, the pump wells with pumps projecting into the pump wells, and the essential parts or regions of the lines are placed in a common pressure-proof and heat-insulated chamber. In addition, for removing coarser crystallizations and solid particles, an upstream classifier also accommodated in the chamber may be provided. The multistage arrangement can be used in a process for the production of terephthalic acid from dimethyl-terephthalate as the intermediate product, and in a process for the hydrogenation of coal.

REFERENCES:
patent: 4285706 (1981-08-01), Dehne
patent: 4455224 (1984-06-01), Kaiser
patent: 4601734 (1986-07-01), Meier et al.

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