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    • 3. 发明申请
    • Concentrating method, treating method, concentrating system and treating system for polyisocyanate residues
    • 浓缩方法,处理方法,浓缩系统和多异氰酸酯残留物处理系统
    • US20090216042A1
    • 2009-08-27
    • US11988677
    • 2006-07-10
    • Masaaki SasakiTadashi YoshidaShigetoshi Suzuki
    • Masaaki SasakiTadashi YoshidaShigetoshi Suzuki
    • C07C263/18C07C209/86B01D3/02
    • C07C263/20C07C265/14
    • A concentrating method and a concentrating system for concentrating polyisocyanate residues that that can effectively concentrate polyisocyanate residues from crude polyisocyanate comprising polyisocyanate and polyisocyanate residues in a short time and can also suppress increase in viscosity to provide stable transport of the residues and prevent blockage of the transport line, and a treating method and a treating system for decomposing the concentrated components to polyamine.The polyisocyanate residues are first heated on the boil by the distiller to be concentrated to a midterm concentrating rate, and then, the polyisocyanate residues are concentrated to the final concentrating rate by evaporation using a evaporator. This can allow the polyisocyanate residues to be decomposed to polyamine to be recovered by setting a Cl content of a high boiling point distillate fraction concentrated to be not more than 2 weight % and then putting the high boiling point distillate fraction into contact with high temperature and high pressure water to be hydrolyzed by the decomposing apparatus.
    • 一种用于浓缩多异氰酸酯残留物的浓缩方法和浓缩系统,其可以在短时间内有效地浓缩来自粗多异氰酸酯的多异氰酸酯残基的多异氰酸酯残基,并且还可以抑制粘度增加以提供残余物的稳定运输并防止运输 线,以及将浓缩成分分解成多胺的处理方法和处理体系。 首先通过蒸馏器将多异氰酸酯残余物在沸点上加热以浓缩至中期浓缩速率,然后使用蒸发器蒸发将多异氰酸酯残余物浓缩至最终浓缩速率。 这可以通过将浓缩至2重量%以下的高沸点馏出物馏分的Cl含量设定为高分子馏分与高温接触,使多异氰酸酯残渣分解成多胺, 由分解装置水解的高压水。
    • 10. 发明申请
    • PROCESS AND EQUIPMENT FOR THE DECOMPOSITION AND RECOVERY OF ISOCYANATE COMPOUNDS
    • 异氰酸酯化合物的分解和还原过程和设备
    • US20090275776A1
    • 2009-11-05
    • US11995397
    • 2006-07-12
    • Fumihiko KasuyaMasahiro YamagataShigetoshi SuzukiTadashi Yoshida
    • Fumihiko KasuyaMasahiro YamagataShigetoshi SuzukiTadashi Yoshida
    • C07C263/18B01J19/00B01J19/18B01J19/20
    • B01J19/20B01J3/02B01J3/042B01J19/006B01J2219/00772B01J2219/185B01J2219/1943C07C209/62C07C2601/14C07C211/12C07C211/18C07C211/27C07C211/36C07C211/46C07C211/50C07C211/51C07C211/58
    • The present invention relates to a method for decomposing and recovering an isocyanate compound, which comprises: continuously mixing and dispersing into water at high pressure and high temperature an isocyanate compound having at least one isocyanate group or group derived from an isocyanate group in a molten state or solution state, supplying a liquid mixture containing the isocyanate compound and the water at high pressure and high temperature continuously to a reactor, followed by subjecting the isocyanate compound to a decomposition reaction in the reactor, and recovering a raw material for the isocyanate compound or a derivative thereof; and an apparatus for decomposing and recovering an isocyanate compound, which comprises: a reactor which brings water at high pressure and high temperature into contact with an isocyanate compound having at least one isocyanate group or group derived from an isocyanate group to cause a decomposition reaction, a water supply line which continuously supplies the water at high pressure and high temperature to a reactor, a compound supply line which continuously supplies the isocyanate compound in a molten state or solution state to the water supply line, an on-off valve which communicates the compound supply line with a vicinity of a communication portion of the water supply line to the reactor, a dehydrating device which conducts a dehydration of a decomposition reaction product discharged from the reactor, and a purification device which purifies the decomposition reaction product after the dehydration.
    • 本发明涉及一种分解和回收异氰酸酯化合物的方法,包括:在高压和高温下连续混合和分散在具有至少一种异氰酸酯基团或衍生自异氰酸酯基团的基团的异氰酸酯化合物处于熔融状态 或溶液状态,将含有异氰酸酯化合物和水的液体混合物在高压高温下连续供给反应器,然后使异氰酸酯化合物在反应器中进行分解反应,并回收异氰酸酯化合物的原料或 其衍生物; 以及用于分解和回收异氰酸酯化合物的装置,其包括:使高压高温水与具有至少一个异氰酸酯基的异氰酸酯化合物或衍生自异氰酸酯基团的异氰酸酯化合物接触引起分解反应的反应器, 向反应器连续供给高压高温的水的供水管线,向熔融状态或溶液状态连续供给异氰酸酯化合物的供给管线,供给管路,其将 化合物供给管线,与供水管路的连通部分邻近反应器,将从反应器排出的分解反应产物脱水的脱水装置,以及在脱水后净化分解反应产物的净化装置。