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    PROCESS FOR THE MANUFACTURE OF POLYALKYLENEPOLYAMINES
    4.
    发明专利
    PROCESS FOR THE MANUFACTURE OF POLYALKYLENEPOLYAMINES 未知

    公开(公告)号：CA1105058A

    公开(公告)日：1981-07-14

    申请号：CA312774

    申请日：1978-10-05

    Applicant: BASF AG

    Inventor： MUELLER HANS ,  WULZ KLAUS ,  BEYER KARL-HEINZ ,  STREIT WERNER

    IPC: C08G73/00 ,  C02F1/54 ,  C08G59/50 ,  C08G73/02 ,  C10M169/00 ,  C07C87/20

    Abstract: of the disclosure: A process for the manufacture, of polyalkylenepolyamines by reacting a primary or secondary ? with a compound of the formula (I) where X is -Cl, -Br or -OSO3H and R1 and R2 are H or saturated alkyl of 1 to 4 carbon atoms, and with at least the stoichiometric amount, based on the compound of the formula I, of an aqueous solution, of from 15 to 45 per cent strength, of an alkali metal hydroxide or alkaline earth metal hydroxide, at from 60 to 200.degree.C, cooling the reaction mixture to a temperature at which 2 phases form, and separating off the upper phase, containing polyalkylenepolyamines. The rate of reaction can be increased by adding catalytic amounts of compounds which initiate the polymerization of alkyleneimines.

    Production of Sodium Bicarbonate.
    5.
    发明专利
    Production of Sodium Bicarbonate. 未知

    公开(公告)号：GB1156820A

    公开(公告)日：1969-07-02

    申请号：GB4552466

    申请日：1966-10-12

    Applicant: BASF AG

    Inventor： MUELLER HANS ,  HANSEN GUENTER

    IPC: C01D7/18

    Abstract: 1,156,820. Mixing and aerating liquids. BADISCHE ANILIN-& SODA-FABRIK A.G. 12 Oct., 1966 [13 Oct., 1965], No. 45524/66. Heading B1C. [Also in Division C1] In a process for producing sodium bicarbonate (see Division C1) a saturated aqueous sodium chloride solution is passed through the venturi-type flared tube 3 of the jet mixer 2 whilst ammonia and carbon dioxide, together with some sodium chloride solution from line 7, are passed from the supply pipe 8 into the space between the casing 5 and the jets 4, which are provided at the periphery of said flared tube, and thence through these jets to mix with the solution passing through the tube 3.

    Method of calcining sodium bicarbonate
    6.
    发明专利
    Method of calcining sodium bicarbonate 未知

    公开(公告)号：GB943788A

    公开(公告)日：1963-12-04

    申请号：GB4243561

    申请日：1961-11-28

    Applicant: BASF AG

    Inventor： HANSEN GUENTER ,  MUELLER HANS ,  SCHMITT KARL OTTO ,  VOGEL KARL

    IPC: C01D7/12

    Abstract: Sodium bicarbonate, which may be moist, is kept in suspension in a finely divided condition in a current of hot gas, and calcined, after drying if necessary, and is then separated from the gas; the solid is treated in at least two systems connected in series, in each of which the solid is suspended in the gas by use of e.g. a flash dryer or fluidized bed furnace, and separated in, e.g., a cyclone or baffle chamber. In system I, gas at a temperature of about 300 DEG C. from separation cyclone 6 of system II, and the solid to be heated, separately enter the cylindrical flash dryer 3 of system I; here the solid becomes suspended in the gas and a spiral motion is imparted by guide plates. The solid is then separated in cyclone 4 from the gas, now at a temperature of about 100 DEG C., which leaves by blower 7 which maintains the requisite gas velocity. The solid then enters cylindrical flash dryer 5 of system II where it meets gas at a temperature of about 550 DEG C. The suspension proceeds to cyclone 6 where gas and solid are separated and the finished solid product is discharged through gate 8. The off-gas that leaves cyclone 4 may be used in yet another stage similar to systems I and II. The degree of heat utilization reaches a value of nearly 70%. In this process, formation of dust is cut down, and the product does not differ from the soda calcined in a rotary kiln. The iron apparatus used shows no product deposits even after operation for several weeks. No smell of ammonia is perceptible when the salt is dissolved in water.

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