摘要:
The invention relates to a column (1) for the thermal treatment of a fluid, comprising: a cylindrical, vertically oriented column body (2) forming a column hollow chamber (3); and a material exchange base (4) arranged in the column hollow chamber (3), forming a collecting surface (5). The column (1) according to the invention is characterised by a circulation device (9) comprising: at least one outlet opening (10) formed in the column body (2) above the collecting surface (5); a circulation line (11) in fluid connection with the outlet opening (10); and at least one recirculation opening (14; 14-1 to 14-3) which is in fluid connection with the circulation line (11), and which is formed in the column body (2) above the collection surface (5). The invention also relates to a thermal separation method, wherein a column (1) of this type is used. With this separation method, a gas rises in the column and a liquid falls in the column, wherein the gas and/or the liquid contains in particular (meth)acrylmonomers.
摘要:
A thermal separating method between a gas rising in a separation column and a liquid, containing (meth)acrylic monomers, descending in the separation column, wherein the separation column contains a sequence of cross-current material exchange trays, the cross-current material exchange trays of which have passage openings for the rising gas both upstream and downstream, in the direction of the cross current, of an outlet shaft for the descending liquid, as well as such cross-current material exchange trays, and a sequence of cross-current material exchange trays contained in a separation column.
摘要:
The invention relates to a column (1) for thermally treating fluid mixtures, comprising a cylindrical, vertically-aligned column body (2) that forms a column cavity (3), a plurality of trays (8) which are mounted in the column cavity (3) and vertically spaced apart from one another, at least one neck (11) arranged in the column body (2) and extending away from said column body (2), and a closeable inspection opening (9) formed at the neck (11). The claimed column is characterised in that a spray device (20) is arranged in the column body (2) and can spray liquid (22) at least against the neck (11) surface (15) directed into the column cavity (3).
摘要:
The invention relates to a column (1) for thermally treating fluid mixtures, comprising a vertically aligned cylindrical column body (2) which forms a hollow column space (3), multiple bases (8) which are mounted in the hollow column space (3) in a mutually vertically spaced manner, and a support structure (9) which supports at least one of the bases (8) in the vertical direction. The column (1) according to the invention is characterized in that the support structure (9) has multiple openings (12) which allow a horizontal exchange of materials by means of the support structure (9). The invention further relates to a base device for such a column and to a thermal separating method between at least one gas which is ascending in such a column (1) and at least one liquid which is descending in the column (1).
摘要:
The invention relates to a system (1) for carrying out heterogeneous catalytic gas-phase reactions, comprising: a reactor (3); at least one line (11), leading into the reactor (3), for introducing reagents into the reactor (3); at least one first feed (5), leading into the line (11), for providing at least one first reagent A; at least one second feed (7), leading into the line (11), for providing at least one second reagent B; at least one third feed (9), leading into the line (11), for providing a circuit gas G; a temperature-control unit (13), arranged upstream from the reactor (3) in the line (11), for controlling the temperature of the first reagent A and/or second reagent B and/or the circuit gas G before entering into the reactor (3); and at least one outlet (15) for products, by-products and/or unreacted reagents of the gas-phase reaction. The invention also relates to a method for carrying out heterogeneous catalytic gas-phase reactions.
摘要:
The invention relates to a column (1) for thermally treating fluid mixtures, comprising a vertically aligned cylindrical column body (2) which forms a column cavity (3), a sequence of vertically spaced dual-flow material exchange bases (8) which are mounted in the column cavity (3) and which have openings for the passage of liquid and gas in counter-flow, and at least one gas inlet opening (5) which is arranged below the lowermost base of the sequence of dual-flow material exchange bases (8). The column according to the invention is characterized in that a gas distribution base (9) is arranged between the lowermost base of the sequence of dual-flow material exchange bases (8) and the gas inlet opening (5), said gas distribution base having openings (32) for the vertical passage of gas which can be introduced into the column cavity (3) via the gas inlet opening (5). The openings (32) are designed to cause a uniform distribution of gas over the column cross-section. The invention further relates to a method for thermally treating fluid mixtures in such a column (1).
摘要:
The invention relates to a column (1) for thermally treating fluid mixtures, comprising a cylindrical, vertically-aligned column body (2) that forms a column cavity (3) and a vertical inner surface (16), a plurality of trays (8) which are mounted in said column cavity (3) and vertically spaced apart from one another, at least one neck (11) arranged in the column body (2) and extending away from said column body (2), and a closeable inspection opening (9) formed at the neck (11). The claimed column is characterised in that, in a vertical cross-section of the column (1), the surface (15) of the lower intersection line of the neck (11), directed into the column cavity (3), or a tangent to the surface (15) of said lower intersection line of the neck (11), forms, together with the vertical inner surface (16) of the column body (2) which extends downwards from said neck (11), an angle in the range of 210° to 267°, at least in some sections.
摘要:
The invention relates to a method for recovering acrylic acid, having the following steps a) separating a temperature-controlled mother acid stream from a crystallization device in the direction of an absorption column (201) and in the direction of a splitting column (205), b) supplying the first temperature-controlled mother acid sub-stream as a return flow to the top plate of the splitting column (205), c) supplying at least one strip gas stream below the bottom plate of the splitting column (205), d) supplying an auxiliary component stream, which comprises an oligomeric acrylic acid, from the condensation column (201) to a central base of the splitting column (205), e) splitting at least one part of the oligomeric acrylic acid from the auxiliary component stream in the splitting column (205), thereby obtaining monomeric acrylic acid, f) separating the auxiliary components contained in the auxiliary component stream by means of a counter-current rectification process in the splitting column (205), g) discharging the monomeric acrylic acid without condensation as a gas mixture together with the supplied strip circuit gas stream at the head of the splitting column (205), and h) supplying the gas mixture below the bottom plate of the condensation column (201). The invention further relates to a system (1) for recovering acrylic acid.