Method for separating potassium chloride/ammonium chloride mixture by organic amine and ammonium chloride conversion
A technology of potassium ammonium chloride and organic amine, applied in the direction of ammonium halide, alkali metal halide purification, etc., can solve problems such as difficult separation of potassium chloride and ammonium chloride, and achieve excellent separation effect, high reaction conversion rate, economical obvious effect
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Embodiment 1
[0024] Prepare 2mol / L ammonium chloride solution, take 50ml, the concentration of potassium ion and ammonium ion is 2mol / L, take 25ml (about 0.13mol) of tributylamine, and take 150ml of n-butanol and add it to the reactor, keep the temperature at 95°C Circulate water, pass condensed water (14°C), start stirring, set the stirring rate to 300 rpm, and give 4 hours to react. The substances produced by the reaction are tributylamine hydrochloride and ammonia gas, and the ammonia gas is introduced into 80 ml of water. After the reaction, the liquid was separated with a separating funnel for 30 minutes, and the volume of the organic phase was recorded as 208.5 ml, and the volume of the inorganic phase was 6.9 ml. Tributylamine hydrochloride exists in the diluent of the organic phase, and the inorganic phase is an ammonium chloride solution with an extremely low concentration that has not completely reacted. After analyzing the inorganic phase by chemical method, the conversion rate...
Embodiment 2
[0026] Prepare a mixed solution of potassium chloride and ammonium chloride. The concentration of potassium ions and ammonium ions is 2mol / L. Take 20ml, 20ml of triethylamine, and 20ml of isoamyl alcohol and add them to the reactor. Water (15°C), start stirring and set the stirring rate to 300 rpm, given 3 hours of reaction, the reaction products are triethylamine hydrochloride and ammonia gas, ammonia gas is introduced into 80ml of water. After the reaction, the reaction liquid was separated with a separating funnel for 30 minutes, and the volume of the organic phase was recorded as 42.8ml, and the volume of the inorganic phase was 23.5ml. After chemical analysis of the inorganic phase, the conversion rate of ammonium chloride obtained was 87.1% (calculated as ammonium ions). The organic phase was recovered with ammonia water for 4 h, separated again with a separatory funnel, and 38 ml of the upper organic phase was recovered, where the organic phase was triethylamine and iso...
Embodiment 3
[0028] Prepare a mixed solution of potassium chloride and ammonium chloride, the concentration of potassium ion and ammonium ion is 2mol / L, take 20ml, take 20ml of tripropylamine, and 40ml of isoamyl alcohol and add it to the reactor, control the constant temperature circulating water at 50°C, and pass the condensed water (15°C), turn on the stirring and set the stirring rate to 500 rpm, and react for 3 hours. The reaction product is tripropylamine hydrochloride and ammonia gas, and the ammonia gas is introduced into 80ml of water. After completion of the reaction, use a separatory funnel to stand still for 30 minutes to separate the liquid, record the volume of the organic phase as 57.4ml, and the volume of the inorganic phase as 15ml. The organic phase was recovered with ammonia water for 4 h, separated again with a separatory funnel, and 51 ml of the upper organic phase was recovered, where the organic phase was tripropylamine and isoamyl alcohol. The conversion of ammonium...
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