Manufacturing technique of high-purity thenardite
Anhydrous Glauber's salt, a manufacturing process technology, applied in the direction of alkali metal sulfite/sulfate dehydration, etc., can solve the problems of unfavorable large-scale production, low purity of Glauber's salt, large harvesting site, etc., to achieve environmental protection, Reduced cleaning time and high productivity
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Embodiment 1
[0037] Example 1: Under the monitoring of the DCS automatic monitoring system and the control of the AK liquid balance flowmeter, the raw nitric water with a Be concentration of 24 ° Be transported down the well is obtained through a first-stage pipeline filter to remove mechanical impurities, and a fourth-stage ion exchanger for refining and purification. Refined nitric water with extremely low impurity content is input into the continuous crystallization process system. There are heat exchangers, crystallizers and thickeners in the continuous crystallization system. Refined nitric water is heated with 1°C cold water in the heat exchanger. Exchange to form a supersaturated solution containing 20% sodium sulfate crystals—grain slurry; the crystal slurry is input from the bottom of the crystallizer, and the crystal grows in the crystallizer to an average particle size of 0.5mm, thereby forming a 35% crystal slurry. The saturated solution containing sodium sulfate in the upper ...
Embodiment 2
[0038] Example 2: Under the monitoring of the DCS automatic monitoring system and the control of the AK liquid balance flowmeter, the 24-30 ° Be concentration raw nitric water transported downhole is removed through the three-stage pipeline filter to remove mechanical impurities, and the eight-stage ion exchanger is refined and purified The refined nitric water with extremely low impurity content is processed and input into the continuous crystallization process system. There are heat exchangers, crystallizers and thickeners in the continuous crystallization system. The refined nitric water is mixed with 3 ℃ cold water Perform heat exchange to form a supersaturated solution containing 20% sodium sulfate crystals—a magma mixture; the magma is input from the bottom of the crystallizer, and the crystals grow to an average particle size of 0.4mm in the crystallizer, thereby forming 40% The crystal slurry, the saturated solution containing sodium sulfate in the upper part returns ...
Embodiment 3
[0039] Embodiment 3: Under the monitoring of the DCS automatic monitoring system and the control of the AK liquid balance flowmeter, the raw nitric water with a Be concentration of 24-30 ° sent down the well is removed through a three-stage pipeline filter to remove mechanical impurities, and an eight-stage ion exchanger is refined and purified. The refined nitric water with extremely low impurity content is processed and input into the continuous crystallization process system. There are heat exchangers, crystallizers and thickeners in the continuous crystallization system. Cold water is used for heat exchange to form a supersaturated solution containing 15% sodium sulfate crystals—the crystal slurry; the crystal slurry is input from the bottom of the crystallizer, and the crystal grows to an average particle size of 0.5mm in the crystallizer, thereby forming 37% sodium sulfate. The crystal slurry, the saturated solution containing sodium sulfate in the upper part returns to t...
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