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    • 65. 发明申请
    • METHOD FOR OXIDATIVELY DEHYDROGENATING N-BUTENES INTO 1,3-BUTADIENE
    • US20160152532A1
    • 2016-06-02
    • US14905569
    • 2014-07-17
    • BASF SE
    • Philipp GRÜNEGauthier Luc Maurice AVERLANTRagavendra Prasad BALEGEDDE RAMACHANDRANJan Pablo JOSCH
    • C07C5/48C07C7/11
    • C07C5/48B01J23/002B01J23/8878B01J23/8898B01J23/94B01J35/023B01J37/0045B01J37/0223B01J37/031B01J38/16B01J2523/00C07C7/11C07C2523/28C07C2523/887Y02P20/584C07C11/167B01J2523/13B01J2523/54B01J2523/67B01J2523/68B01J2523/842B01J2523/845
    • A process for oxidative dehydrogenation of n-butenes to 1,3-butadiene in a fixed-bed reactor (R), which comprises at least two production steps (i) and at least one regeneration step (ii), and in which in a production step (i), a starting gas mixture (1) comprising the n-butenes is mixed with an oxygen-comprising gas (2) and brought into contact with a heterogeneous, particulate multimetal oxide catalyst comprising molybdenum and at least one further metal as active composition in the fixed-bed reactor (R) and in a regeneration step (ii), the heterogeneous, particulate multimetal oxide catalyst comprising molybdenum and at least one further metal as active composition is regenerated by passing an oxygen-comprising regeneration gas mixture over it and burning off the carbonaceous material deposited on the multimetal oxide catalyst, where a regeneration step (ii) is carried out between two production steps (i) and where a product gas stream (6) which comprises 1,3-butadiene and additionally unreacted n-butenes, oxygen, water and further secondary components, in particular carbon monoxide, carbon dioxide, inert gases, in particular nitrogen, high-boiling hydrocarbons, i.e. hydrocarbons having a boiling point of 95° C. or above at a pressure of one atmosphere, optionally hydrogen and optionally oxygenates is obtained in the production step (i) in the fixed-bed reactor (R) and is fed as such or after one or more intermediate steps as stream (11) to an absorption column (K) in which an absorption is carried out at a pressure in the range from 3.5 to 20 bar by means of a high-boiling absorption medium (13) which becomes loaded with the C4-hydrocarbons from the product gas stream (6) or the stream (11) and is taken off as loaded solvent stream (14) from the bottom of the absorption column (K) to give an overhead stream (12) comprising oxygen, low-boiling hydrocarbons, i.e. hydrocarbons having a boiling point of less than 95° C. at a pressure of one atmosphere, residues of C4-hydrocarbons, residues of high-boiling hydrocarbons, i.e. hydrocarbons having a boiling point of 95° C. or above at a pressure of one atmosphere, optionally inert gases, in particular nitrogen, optionally carbon oxides and optionally water vapor, and is partly or completely recycled as recycle stream to the fixed-bed reactor (R), wherein at the end of each production step (i), the introduction of the oxygen-comprising gas (2) into the reactor (R) is throttled back or shut off and the production step (i) is continued until the oxygen concentration in the overhead stream (12) has decreased to 5% by volume, based on the total volume of the overhead stream (12), whereupon the introduction of the gas stream (1) comprising the n-butenes and also the introduction of the oxygen-comprising gas (2) is shut off, if this has not already been done at the end of the production step (i), at which point the production step (i) is complete and the regeneration step (ii) is started by the overhead stream (12) from the absorption column (K) functioning as oxygen-comprising regeneration gas mixture or substream of the oxygen-comprising regeneration gas mixture, is proposed.
    • 70. 发明申请
    • CATALYST FOR PREPARING VINYL CHLORIDE, METHODS OF PREPARATION AND APPLICATION THEREOF
    • 制备氯乙烯的催化剂,其制备方法及其应用
    • US20130204052A1
    • 2013-08-08
    • US13806726
    • 2011-10-26
    • Biao JiangJinguang Zhong
    • Biao JiangJinguang Zhong
    • B01J27/18C07C17/25
    • B01J27/1806B01J21/18B01J23/02B01J27/138B01J37/0018B01J37/0201B01J37/0203B01J37/0223B01J37/084C07C17/08C07C17/25C07C21/06
    • The present invention discloses a catalyst used in preparing vinyl chloride, its method of preparation, and its applications. Said catalyst used in making vinyl chloride comprises activated carbon as a support, a barium compound and a phosphorus compound supported thereon. The barium compound accounts for 0.2% to 20% of the total mass of the catalyst and the phosphorus compound accounts for 0% to 10% of the total mass of the catalyst based on the mass percentage. A water-soluble barium compound, a water-soluble phosphorus compound, an aqueous polymer monomer, and water are mixed to form a solution or emulsion A. The activated carbon is added into the solution or emulsion A. The activated carbon is removed from water after impregnation, spin-dried, and then the monomers are polymerized. The activated carbon, after polymerization step, is heated to remove water and to decompose and carbonize the polymer. The catalyst after carbonization was activated to obtain a catalyst used in making vinyl chloride.
    • 本发明公开了用于制备氯乙烯的催化剂及其制备方法及其应用。 用于制备氯乙烯的所述催化剂包括作为载体的活性炭,负载在其上的钡化合物和磷化合物。 钡化合物占催化剂总质量的0.2%至20%,磷化合物占催化剂总质量的0%至10%,基于质量百分比。 将水溶性钡化合物,水溶性磷化合物,水性聚合物单体和水混合以形成溶液或乳液A.将活性炭加入到溶液或乳液A中。将活性炭从水中除去 浸渍后,旋转干燥,然后使单体聚合。 在聚合步骤之后,将活性炭加热以除去水并分解和碳化聚合物。 碳化后的催化剂被活化,得到用于制备氯乙烯的催化剂。