FIELD: chemistry.
SUBSTANCE: invention relates to chemical industry. Liquid ammonia is mixed with a strongly basic ion exchanger and passed through it at temperature ranging from minus 20°C to 60°C and pressure ranging from 1 to 25 bar for 1-36 hours. Content of ammonia in the liquid ammonia is more than 98 wt % and content of halide ions, e.g., chloride ions, ranges from 10 ppm to 200 ppm. The flow rate of the liquid ammonia ranges from 10 to 120 (m3 ammonia)/(m3 ion exchanger)/h. The ion exchanger is laid in fixed layers. The basic frame of the strongly basic ion exchanger is a covalently cross-linked polymer matrix formed from cross-linked polystyrene or polyacrylate, and the functional groups of the ion exchanger are quaternary ammonium groups. Purified ammonia is used in the method to produce amines.
EFFECT: reducing the amount of undesirable by-products, reducing corrosion of the equipment.
14 cl, 2 ex
| Title | Year | Author | Number |
|---|---|---|---|
| ALKYLENE OXIDE HYDROLYSIS METHOD INVOLVING CATALYST-STABILIZING ADDITIVE | 1999 |
|
RU2230728C2 |
| METHOD OF PRODUCING ALKYLENE GLYCOL | 2008 |
|
RU2467995C2 |
| GRANULAR POLYMERS BASED ON POLYACRYLATE FUNCTIONALIZED WITH QUATERNIZED DIETHYLENETRIAMINE, METHOD FOR PRODUCING THEM, USE OF THESE POLYMERS AND METHOD FOR REMOVING OXOANIONS FROM AQUEOUS AND/OR ORGANIC SOLUTIONS | 2017 |
|
RU2754099C2 |
| PROCEDURE FOR EXTRACTION OF URANIUM | 2006 |
|
RU2412266C2 |
| METHOD OF REGENERATING FLUORINATED ALKANE ACIDS FROM WASTE WATERS | 1999 |
|
RU2224721C2 |
| METHOD OF RECOVERING FLUORINATED ALKANE ACIDS FROM WASTE WATERS | 1999 |
|
RU2226186C2 |
| URANIUM EXTRACTION | 2017 |
|
RU2735528C2 |
| PURIFICATION OF BORIC ACID IN THE ION EXCHANGE PROCESS | 2019 |
|
RU2759088C1 |
| TREATMENT OF SEWAGE WATER FROM COKING | 2011 |
|
RU2577379C1 |
| METHOD FOR PREPARING ALKYLENE GLYCOLS AND CATALYTIC COMPOSITION FOR THEIR PREPARING | 1999 |
|
RU2233261C2 |
