The invention relates to a method for separating formic acid from a reaction mixture by means of extraction, wherein, in addition to the formic acid, the reaction mixture comprises a polyoxometalate ion of general formula [PMoxVyO40]n− as a catalyst and a solvent that dissolves the catalyst, wherein 6≤x≤11, 1≤6, x+y=12 and 3
本发明涉及一种通过萃取从反应混合物中分离甲酸的方法,其中除甲酸外,反应混合物还包括通式为[PMoxVyO40]n-的多氧金属离子作为催化剂和溶解催化剂的溶剂,其中6≤x≤11,1≤6,x+y=12和3
Utilization of an extracting agent as antifoaming agent in the production of anhydrous formic acid
申请人:——
公开号:US20030009057A1
公开(公告)日:2003-01-09
The invention relates to a process for obtaining anhydrous or substantially anhydrous formic acid in which, during the work-up, a compound of the general formula I
1
where the radicals R1 and R2 are alkyl, cycloalkyl, aryl or aralkyl groups, or R1 and R2 jointly, together with the N atom, form a heterocyclic 5- or 6-membered ring, and only one of the radicals is an aryl group, and where R3 is hydrogen or a C1-C4-alkyl group,
is employed simultaneously as extractant for formic acid and as antifoam for a distillation process.
本发明涉及一种获得无水或基本无水甲酸的工艺,在该工艺中,在加工过程中,通式 I 的化合物
1
其中基团 R1 和 R2 为烷基、环烷基、芳基或芳烷基,或 R1 和 R2 与 N 原子共同构成杂环 5 或 6 元环,且其中只有一个基团为芳基,R3 为氢或 C1-C4 烷基、
可同时用作甲酸萃取剂和蒸馏过程中的消泡剂。
Method for producing anhydrous formic acid
申请人:——
公开号:US20030018216A1
公开(公告)日:2003-01-23
The invention relates to a process for obtaining anhydrous or substantially anhydrous formic acid, in which firstly aqueous formic acid is produced by hydrolysis of methyl formate, with the methanol content in the methyl formate having been reduced in advance. The process according to the invention has the special feature that—before the hydrolysis of the methyl formate—the methanol content of the methanol-containing methyl formate is reduced in a distillation column, this distillation column simultaneously being employed for other separation functions during work-up of the formic acid.
本发明涉及一种获得无水或基本无水甲酸的工艺,在该工艺中,首先通过水解甲酸甲酯生产甲酸水溶液,甲酸甲酯中的甲醇含量事先已被降低。根据本发明的工艺有一个特点,即在水解甲酸甲酯之前,先在蒸馏塔中降低含甲醇甲酸甲酯中的甲醇含量,在甲酸的加工过程中,该蒸馏塔还同时用于其他分离功能。
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