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    5.
    发明专利
    未知

    公开(公告)号：DE1222038B

    公开(公告)日：1966-08-04

    申请号：DEB0057080

    申请日：1960-03-16

    Applicant: BASF AG

    Inventor： NONNENMACHER DR HELMUT ,  ENGELBACH DR HEINZ ,  SINN DR RICHARD

    IPC: B01J8/24 ,  C10G9/32 ,  C10G47/30

    Abstract: In the production of gaseous olefins by cracking hydrocarbons such as crude oil or a crude oil distillate at 680 DEG -850 DEG C. in the presence of fluidized, hot, inert, heat carrier particles which circulate between the reactor and a regenerator where the heat necessary for the cracking is supplied by burning carbon deposits on the particles and by combustion of part of the oil residues boiling above 200 DEG C. from the product which have been used to quench the vapour leaving the reactor to below 400 DEG C., the particles used have a grain size between 0,05 and 4 mm., at least 10% having a size above 1 mm. The feedstock, having a final boiling point of 200 DEG -400 DEG C., is injected into reactor 1 by line 9 where it is contacted with a fluidized bed of hot inert solids, e.g. aluminium silicate containing more than 50% by weight of alumina, corundum, sillimanite or mullite. The cyclone 11 is adjusted so that the vapours leaving it still contain 5-50 grams of solid per normal cubic meter which prevent carbon deposits in the exit pipe. The vapours are quenched in vessel 13 with residual oil from line 15; this also removes the solids from the vapours. From receiver 17 the vapours are introduced into fractionating column 19 where gases and gasoline are recovered overhead, fuel oil by line 28, a rinsing oil for pump 26 by line 25 and quenching oil by line 24. Solids leave reactor 1 by standpipe 3 which is at an angle to the vertical of not more than 20 degrees and passed to regenerator 2 by riser 4 using air, flue gas or nitrogen introduced by line 30; the amount of solid leaving the reactor is regulated by a gas stream 29. In the regenerator carbon deposits and oil from line 32 are burned with sufficient excess oxygen to ensure an oxygen content of 0,3-3% by volume in the flue gas. This gas may be used as a conveying gas. Solids are returned to the reactor by pipes 5 and 6, steam being used as the conveying gas. Steam is also preferably used as the fluidizing gas.

    8.
    发明专利
    未知

    公开(公告)号：DE1022521B

    公开(公告)日：1958-01-09

    申请号：DEB0041514

    申请日：1956-08-24

    Applicant: BASF AG

    Inventor： HIMMLER DR WILHELM ,  ENGELBACH DR HEINZ

    IPC: B01F15/04 ,  B01J8/00 ,  B65G53/00

    Abstract: Catalysts for use in catalytic and thermal cracking of mineral oil, or mineral oil fractions, are introduced from a layer of such material moving downwards into a conveyer gas moving upwards by leading the catalysts through an annular chamber C surrounding the rising pipe 1 into a widened chamber, into which the pipe 1 projects, where it forms a crater A surrounding the widened lower end of the pipe 1 and the constricted opening 4 of the pipe 5 supplying gas, and introducing catalyst continuously into the gas from the crater together with a current of metering gas flowing on to the outer slope of the crater through a pipe 3 and an annular chamber D.

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