Preparation and application of low-toxicity and high-efficiency polymerization inhibitor for acrylonitrile device
A high-efficiency polymerization inhibitor and acrylonitrile technology, applied in the purification/separation of carboxylic acid nitrile, organic chemistry, etc., can solve the problems of flying dust, affecting the health of employees, material loss, etc., and achieve low freezing point, significant economic benefits and Social benefit, effect of extending operating time
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Embodiment 1
[0012] Example 1 Get 1000g of acrylonitrile to remove the polymerization inhibitor, do total reflux operation (operating temperature: 100°C, time: 30 minutes) in the following device, add 100ppm polymerization inhibitor respectively, then measure the polymer content in the product as 3.22 g.
Embodiment 2
[0013] Embodiment 2 Get 1000g of acrylonitrile for removing the polymerization inhibitor, do total reflux operation (operating temperature: 100°C, time: 30 minutes) in the following device, add 100ppm polymerization inhibitor respectively, then measure the polymer content in the product as 2.86g.
Embodiment 3
[0014] Embodiment 3 Get 1000g of acrylonitrile for removing the polymerization inhibitor, do total reflux operation (operating temperature: 100°C, time: 30 minutes) in the following device, add 100ppm polymerization inhibitor respectively, then measure the polymer content in the product as 2.14g.
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