| 摘要 |
PCT No. PCT/EP88/01146 Sec. 371 Date Oct. 12, 1990 Sec. 102(e) Date Oct. 12, 1990 PCT Filed Dec. 13, 1988 PCT Pub. No. WO90/06807 PCT Pub. Date Jun. 28, 1990.In a tubular reactor (2) for catalytic chemical gas-phase reactions with symparallel [sic] guidance of the heat-exchanger, a partial stream of the heat-exchanger medium, this partial stream immediately neighboring the inlet side of the tube plate (6), is introduced through a by-pass channel (26) arranged in the center of the bank of tubes (4), by-passing the bank of tubes, and introduced at a point which is downstream to the discharge area of the heat-exchanger. In this way, undersirable severe local cooling in the reaction area of the bank of tubes (4) can be avoided.
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