Process for the production of a co-mixture of piperazine and methyl-substituted piperazine
AssigneeUop LLC
InventorsNabil Al Yassir, Carl J. Stevens, Edwin P. Boldingh
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Abstract
Catalytic processes to manufacture piperazine and 2-methyl piperazine simultaneously through co-feeding a linear alkanolamine, or a diol, or an ethyleneamine with an analog of the alkanolamine, or the diol, or the ethyleneamine in the presence of anhydrous ammonia to produce a reaction mixture comprising the piperazine and the methyl-substituted piperazine are described. The catalyst comprises a 10 membered ring zeolite.
Claims20
A process for the production of a co-mixture of piperazine and methyl-substituted piperazine comprising:
- co-feeding a linear alkanolamine, or a diol, or an ethyleneamine with an analog of the alkanolamine, or the diol, or the ethyleneamine in a reaction zone comprising a reactor in the presence of anhydrous ammonia and a catalyst comprising a 10-member ring zeolite to produce a reaction mixture comprising the piperazine and the methyl-substituted piperazine.
A process for the production of a co-mixture of piperazine and methyl-substituted piperazine comprising:
- co-feeding a linear alkanolamine, or a diol, or an ethyleneamine with an analog of the alkanolamine, or the diol, or the ethyleneamine in a reaction zone comprising a reactor in the presence of anhydrous ammonia and a catalyst comprising a 10-member ring zeolite to produce a reaction mixture comprising the piperazine, the methyl-substituted piperazine, and a piperazine derivative, wherein the reaction mixture comprises a weight ratio of the piperazine to the methyl-substituted piperazine in a range of 10:90 to 90:10;
- separating the reaction mixture into a piperazine product stream comprising the piperazine and the methyl-substituted piperazine, and a byproduct stream comprising the piperazine derivatives;
- and
- recycling the byproduct stream to the reaction zone.
Dependencies are inferred from the claim text.