A kind of preparation method of food grade sodium diacetate
A technology of sodium diacetate and food grade, applied in the field of preparation of food grade sodium diacetate, can solve the problems of harsh reaction conditions, high production cost, difficult to popularize, etc., and achieves the effects of low production cost, improved utilization rate and simple process
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Embodiment 1
[0027] The reactor is a multifunctional rake reactor, such as Figure 1-Figure 2 As shown, it includes: a support frame 1, a transmission device 2, a shaft seal device 3, a raking device 4, a feeding device 5, a body 6, a rotary joint 7 and a heat exchange device 8, and the body 6 is fixedly installed above the support frame 1 , the transmission device 2 is fixedly installed on the support frame 1 on the left side of the body 6, the top of the body 6 is provided with a suction port, a feeding port and a manhole, and the bottom of the body 6 is provided with a discharge port in the middle, and the discharge port is connected to the discharge valve The inside of the body 6 is provided with a raking device 4, the two ends of the raking device 4 run through the body 6, the space between the raking device 4 and the body 6 is sealed by the shaft sealing device 3, and the two ends of the raking device 4 are connected to each other by the rotor bearing. The bearing seat is rotationall...
Embodiment 2
[0037] The raw materials of soda ash and glacial acetic acid in this example are both food grade, and the reactor in this example is the multifunctional rake reactor in Example 1.
[0038] A kind of preparation method of food grade sodium diacetate, concrete steps are as follows:
[0039] S1. Add 500kg of soda ash into the rake reactor, turn on the rake device of the multifunctional rake reactor, slowly add 1160kg of glacial acetic acid into the reactor, and the feeding device distributes the glacial acetic acid evenly in the reactor to control the reaction temperature At 80°C, the reaction time is controlled at 2 hours, and the glacial acetic acid and sodium carbonate are fully chemically reacted to synthesize sodium diacetate under the stirring of the rake device;
[0040] S2. Introduce temperature-reducing and decompressing steam at 110° C. into the heat exchange device and raking device of the multifunctional rake reactor, ripen at 90° C. for 1 hour, and dry at 105° C. for...
Embodiment 3
[0046] The raw materials of soda ash and glacial acetic acid in this example are both food grade, and the rake reactor in this example is the multifunctional rake reactor in Example 1.
[0047] A kind of preparation method of food grade sodium diacetate, concrete steps are as follows:
[0048] S1. Add 800kg of soda ash into the rake reactor, open the rake device 4 of the multifunctional rake reactor, slowly add 1856kg of glacial acetic acid into the reactor, control the reaction temperature at 85°C, and control the reaction time at 2.2 hours. Under the agitation of the rake device, glacial acetic acid and sodium carbonate fully carry out chemical reaction to synthesize sodium diacetate;
[0049] S2. Introduce temperature-reducing and depressurizing steam at 112° C. into the heat exchange device and raking device of the multifunctional rake reactor, ripen at 85° C. for 1.2 hours, and dry at 102° C. for 2 hours;
[0050] S3. Turn off the steam, feed cooling water into the heat ...
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