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    METODO MEJORADO PARA PRODUCIR ACIDO CIANHIDRICO POR DESHIDRATACION CATALITICA DE FORMAMIDA GASEOSA.
    3.
    发明专利
    METODO MEJORADO PARA PRODUCIR ACIDO CIANHIDRICO POR DESHIDRATACION CATALITICA DE FORMAMIDA GASEOSA. 未知

    公开(公告)号：MX2010005158A

    公开(公告)日：2010-05-20

    申请号：MX2010005158

    申请日：2008-11-12

    Applicant: BASF SE

    Inventor： LUYKEN HERMANN ,  PFAB PETER ,  SCHNEIDER THOMAS ,  DECKERS ANDREAS ,  BOEHLING RALF ,  ACHHAMMER GUENTHER

    IPC: C01C3/02 ,  B01J19/24

    Abstract: La invención se refiere a un método para producir ácido cianhídrico por deshidratación catalítica de formamida gaseosa en un reactor tubular que comprende por lo menos un canal de reacción en donde ocurre la deshidratación catalítica, en donde el canal de reacción comprende una superficie interna hecha de un material que tiene una porción de hierro de = 50% en peso, y ningún catalizador y/o componentes incorporados están presentes en el canal de reacción, y el por lo menos un canal de reacción tiene un diámetro hidráulico medio de 0.5 a 6 mm. La invención además se refiere a un reactor que tiene las características mencionadas antes y el uso del reactor de conformidad con la invención para producir ácido cianhídrico por deshidratación catalítica de formamida gaseosa.

    IMPROVED METHOD FOR PRODUCING HYDROCYANIC ACID BY CATALYTIC DEHYDRATION OF GASEOUS FORMAMIDE
    6.
    发明专利
    IMPROVED METHOD FOR PRODUCING HYDROCYANIC ACID BY CATALYTIC DEHYDRATION OF GASEOUS FORMAMIDE 未知

    公开(公告)号：CA2705412A1

    公开(公告)日：2009-05-22

    申请号：CA2705412

    申请日：2008-11-12

    Applicant: BASF SE

    Inventor： BOEHLING RALF ,  DECKERS ANDREAS ,  SCHNEIDER THOMAS ,  ACHHAMMER GUENTHER ,  LUYKEN HERMANN ,  PFAB PETER

    IPC: C01C3/02 ,  B01J19/24

    Abstract: The invention relates to a method for producing hydrocyanic acid by catalytic dehydration of gaseous formamide in a tubular reactor comprising at least one reaction channel in which the catalytic dehydration occurs, wherein the reaction channel comprises an inner surface made of a material having an iron portion of = 50 wt.-%, and no additional catalysts and/or built-in components are present in the reaction channel, and the at least one reaction channel has an average hydraulic diameter of 0.5 to 6 mm. The invention further relates to a reactor having the features mentioned above and the use of the reactor according to the invention for producing hydrocyanic acid by catalytic dehydration of gaseous formamide.

    Method for extension of operation hours of plant for cleaning of hydrocyanic acid, comprises treating the surface of the plant that comes in contact with the hydrocyanic acid, with an oxidation agent
    7.
    发明专利
    Method for extension of operation hours of plant for cleaning of hydrocyanic acid, comprises treating the surface of the plant that comes in contact with the hydrocyanic acid, with an oxidation agent 未知

    公开(公告)号：DE102009001699A1

    公开(公告)日：2009-10-15

    申请号：DE102009001699

    申请日：2009-03-20

    Applicant: BASF SE

    Inventor： ACHHAMMER GUENTHER ,  LUYKEN HERMANN ,  PFAB PETER

    IPC: C01C3/02

    Abstract: The method comprises treating a surface of plant that comes in contact with the hydrocyanic acid, with an oxidation agent at 200-800[deg] C, and subsequently subjecting the plant with the hydrocyanic acid. The surface of the plant is stainless steel containing surface. The oxidation agent is oxidizing fluid, oxidizing paste and oxidizing gas. The treatment of the surface is carried out through immersing, spraying, flooding the plant, coating and conducting gases. Before the treatment of the surface with the oxidation agent, a mechanical processing of the surface is carried out. The method comprises treating a surface of plant that comes in contact with the hydrocyanic acid, with an oxidation agent at 200-800[deg] C, and subsequently subjecting the plant with the hydrocyanic acid. The surface of the plant is stainless steel containing surface. The oxidation agent is oxidizing fluid, oxidizing paste and oxidizing gas. The treatment of the surface is carried out through immersing, spraying, flooding the plant, coating and conducting gases. Before the treatment of the surface with the oxidation agent, a mechanical processing of the surface is carried out through high pressure cleaning, palpitating, beating, grinding, radiating, brushing and/or polishing and the surface is treated by rinsing with an aqueous caustic soda. During subjecting the plant with the hydrocyanic acid, a slight quantity of diluted acid and/or acid gas is dosed in the plant. The method is carried out for dewatering of hydrocyanic acid by distillation.

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