Method for continuous synthesis of 4A zeolite for detergent auxiliary
A technology of detergent additives and synthesis methods, applied in the direction of inorganic/elemental detergent compositions, etc., can solve the problems of low utilization rate of equipment, unstable synthesis system, and many artificial control points, so as to reduce equipment and stabilize the reaction system, The effect of reducing manual control points and improving product quality
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Embodiment 1
[0015] The semi-finished sodium aluminate solution of sintering alumina production process is desiliconized and refined, and then mixed with 4A mother liquor to Al 2 o 3 : 42.5g / L, diluted water glass: SiO 2 : 10.2%, the two solutions press n sio2 / n Al2o3 =2 ratio, the volume flow ratio is sodium aluminate preparation solution: dilute water glass=2.28, such as sodium aluminate preparation solution flow rate 150m 3 / h, dilute water glass 65.8m 3 The flow rate per hour is continuously added to the reaction tank through the delivery pump body to form a gel. The process is mechanically stirred, and the colloid stays in the reaction tank for 8 minutes. The directing agent is rapidly heated to 95°C, and after 1.5 hours of heat preservation, the material is separated from solid and liquid by a belt filter or a plate and frame filter press, and the solid is washed and dried to obtain 4A zeolite for detergent aids.
Embodiment 2
[0017] The semi-finished sodium aluminate solution of sintering alumina production process is desiliconized and refined, and then mixed with 4A mother liquor to Al 2 o 3 : 57.45g / L, diluted water glass: SiO 2 : 12.38%, the two solutions press n sio2 / n Al2o3 =1.8 ratio, the volume flow ratio is sodium aluminate preparation liquid: dilute water glass=2.44, such as sodium aluminate preparation liquid flow rate 150m 3 / h, dilute water glass 61.5m 3 The flow rate of / h is continuously added to the reaction tank through the delivery pump body to form a gel, and the process is mechanically stirred, the colloid stays in the reaction tank for 10 minutes, and the above colloid is continuously added to the crystallization tank (enough) by the delivery pump. Add amorphous directing agent, heat up to 95°C through rapid heating, and keep warm for 2 hours. The material is separated from solid and liquid by belt filter or plate and frame filter press, and the solid is washed and dried to...
Embodiment 3
[0019] The semi-finished sodium aluminate solution of sintering alumina production process is desiliconized and refined, and then mixed with 4A mother liquor to Al 2 o 3 : 68.75g / L, diluted water glass: SiO 2 : 15.11%, the two solutions press n sio2 / n Al2o3 =2.1 ratio, the volume flow ratio is sodium aluminate preparation solution: dilute water glass=2.24, such as sodium aluminate preparation solution flow rate 150m 3 / h, dilute water glass 66.9m 3 The flow rate of / h is continuously added to the reaction tank through the delivery pump body to form a gel. The process is mechanically stirred, and the colloid stays in the reaction tank for 9 minutes. The directing agent is rapidly heated to 95°C, and after 3 hours of heat preservation, the material is separated from solid and liquid by a belt filter or plate and frame filter press, and the solid is washed and dried to obtain 4A zeolite for detergent aids.
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