Continuous tubular plug flow reactor and preparation method for preparing continuous bulk SAN (Styrene-Acrylonitrile) resin
A plug-flow reactor and reactor technology, which is applied in the field of polymer material synthesis and preparation, can solve problems such as product performance fluctuations, production processes, and operating conditions and equipment parameters, and achieve excellent processing performance, narrow molecular weight distribution, and impact high intensity effect
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[0019] Example 1
[0020] The prepared raw material liquid, initiator and chain transfer agent are transported to the inlet of the first plug flow reactor of each group of two-stage continuous tubular plug flow reactor in a certain proportion, and each group of two-stage continuous tubular plug flow reactor at the same time The circulating materials divided at the outlet of the second plug flow reactor of the flow reactor also enter the first plug flow reactor together. The temperatures of the upper, middle and lower zones of the first plug flow reactor are 124.5°C, 127.8°C, and 130.5°C, respectively. The temperatures of the upper, middle and lower zones of the second plug flow reactor are 135.9°C, 141.2°C, and 148.8°C, respectively. The weight ratio of styrene and acrylonitrile in the raw material liquid is 76:24, and the flow rate is controlled to be 100 g / h. The concentration of the initiator solution is 70 ppm, and the flow rate is controlled at 0.7 g / h. The chain transfer...
Example Embodiment
[0027] Example 2
[0028] The prepared raw material liquid, initiator and chain transfer agent are transported to the entrance of the first plug flow reactor of each group of two-stage continuous tubular plug flow reactor in a certain proportion, and each group of two-stage continuous tubular plug flow reactor at the same time The circulating materials divided at the outlet of the second plug flow reactor of the flow reactor also enter the first plug flow reactor together. The temperatures of the upper, middle and lower zones of the first plug flow reactor are 125.2°C, 128.1°C, and 131.6°C, respectively. The temperatures of the upper, middle and lower zones of the second plug flow reactor are 135.9°C, 141.8°C, and 147.8°C, respectively. The weight ratio of styrene and acrylonitrile in the raw material liquid is 76:24, and the flow rate is controlled to be 100 g / h. The concentration of the initiator solution is 70 ppm, and the flow rate is controlled at 0.7 g / h. The chain trans...
Example Embodiment
[0034] Example 3
[0035] The prepared raw material liquid, initiator and chain transfer agent are transported to the entrance of the first plug flow reactor of each group of two-stage continuous tubular plug flow reactor in a certain proportion, and each group of two-stage continuous tubular plug flow reactor at the same time The circulating materials divided at the outlet of the second plug flow reactor of the flow reactor also enter the first plug flow reactor together. The temperatures of the upper, middle and lower zones of the first plug flow reactor are 125.5°C, 127.9°C, and 131.6°C, respectively. The temperatures of the upper, middle and lower zones of the second plug flow reactor are 135.7°C, 140.9°C, and 149.1°C, respectively. The weight ratio of styrene and acrylonitrile in the raw material liquid is 76:24, and the flow rate is controlled to be 100 g / h. The concentration of the initiator solution is 70 ppm, and the flow rate is controlled at 0.7 g / h. The chain trans...
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