PROCESS OF MAKING MOLTEN METAL IN CUPOLA

    公开(公告)号:KR870002182B1

    公开(公告)日:1987-12-28

    申请号:KR820000133

    申请日:1982-01-14

    Abstract: Molten metal is produced by (i) charging coke and metal to a cupola furnace; (ii) buring the coke with introduced O2-contg. gas (I); (iii) additionally injecting O2-contg. gas (II) having a higher O2 concn. than (I) into the furnace, at a rate of flow such that the O2 concn. of (I) is enriched by 0.5-10%. The improvement is that the gas (II) is injected into the furnace at a supersonic velocity. Metal melting is more efficient than in other methods in which oxygen is injected directy into the furnace, because the increased rate of flow of ozygen gives increased combusion reasction penetration. Thus, less coke or fuel is required.

    PREPARATION OF RHODIUM COMPLEX COMPOUNDS

    公开(公告)号:KR870000645B1

    公开(公告)日:1987-04-03

    申请号:KR820005802

    申请日:1982-12-24

    Abstract: Hydridocarbonyltris(triorganophosphorous)rhodium compd. is prepd. for use as hydroformylation agent. Condenced rhodium complex soln., hydrogen gas, alcohol diluent, carbon monoxide and triorganophosphorous ligand are mixed to give homogeneous organic reaction soln.. This nonaqueous reaction soln. is reacted at 20-120≦̸C to give hydridocarbonyltris(triorganophosphrous) rhodium compd.. The solvent of condensed rhodium complex soln. is perhydroformylation reaction medium. This process is simple and economical.

    A PROCESS OF HYDROFORMYLATION
    5.
    发明授权

    公开(公告)号:KR870000200B1

    公开(公告)日:1987-02-16

    申请号:KR820003667

    申请日:1982-08-16

    Abstract: Aldehydes are produced by hydroformylating an olefinically unsatd. compd. with CO and H2 in a reaction medium contg. a rhodium complex catalyst, free triarylphosphine ligand and free organic tert. bisphosphine monoxide ligand of formula(I) with the mole ration of triarylphosphine ligand to (I) being (2-30):1 (Ar is an opt. substd. aryl; R1, R2 and R3 are opt. subst. monovalent hydrocarbyl; and Y is a divalent bridging gp.). Also clamined is a rhodium complex hydroformylating catalystic precursor compsn. comprising a solubilised rhodium carbonyl phosphorus acetylacetonate complex, an organic solvent and the ligands given above.

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