Treatment method of β-alanine by-product
A treatment method and by-product technology, applied in the chemical field, can solve problems such as wasting resources and increasing environmental treatment costs, and achieve the effects of preventing decomposition, shortening high-temperature residence time, and improving selectivity and yield
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Embodiment 1
[0008] Example 1: Treatment of β-alanine by-products
[0009] First weigh 85.6g of 40% 3,3'-iminodipropionic acid sodium salt aqueous solution and 115g of 30% ammonia water for later use, adjust the reaction pressure of the microchannel flow reactor to 900 Kpa, and the reaction temperature to 200°C, and then Ammonia water with a volume flow rate of 8ml / min and 3,3'-iminodipropionic acid sodium salt solution with a volume flow rate of 7ml / min were injected into the microchannel flow reactor (manufactured by Corning Corporation, G1-A type) through a metering pump ), after continuous reaction and flash deamination, 160g of β-alanine sodium reaction solution was obtained, and then concentrated under reduced pressure at 50-80°C to reduce the moisture content of the reaction solution to 50%, and then treated by spray drying to obtain 37.3 g of solid product.
[0010] The product was sampled and detected by HPLC, and the results were as follows: 3,3'-iminodipropionate sodium was not...
Embodiment 2
[0011] Example 2: Treatment of β-alanine by-products
[0012] According to the treatment method of Example 1, the difference is that the reaction temperature is 150°C.
[0013] 37.2g of solid product was obtained through the reaction, and the product was sampled and detected by HPLC. The results were as follows: the content of sodium 3,3'-iminodipropionate was 20.6%, the content of sodium β-alanine was 79.4%, and the conversion rate was 77.6%. The rate is 78.4%.
Embodiment 3
[0014] Example 3: Treatment of β-alanine by-products
[0015] According to the processing method of Example 1, the difference is that the reaction temperature is 180° C., and the reaction pressure is 1000 Kpa.
[0016] 37.1g of solid product was obtained through the reaction, and the product was sampled and detected by HPLC. The results were as follows: 3,3'-iminodipropionate sodium content 0.4%, β-alanine sodium content 99.6%, conversion rate 99.6%, yield 98.1%.
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