Phenol production technology
A production process and an aromatic sulfonate technology, applied in the field of phenol production technology, can solve problems such as low production efficiency and long reaction time, and achieve the effects of reducing environmental protection pressure, shortening reaction time, and improving reaction yield
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Embodiment l
[0018] The 100kg sodium p-toluenesulfonate solid and the 50kg sodium hydroxide solid are mixed homogeneously in a mixer. Turn on the electric heating to control the temperature of the twin-screw extrusion reactor to 350° C., and then feed the mixed material into the twin-screw extrusion reactor at a uniform speed at a rate of 15 kg / h through the feeder. Driven by the extrusion of the screw, it moves to the other end of the pipeline and undergoes an alkali fusion reaction at the same time. The rotation speed of the twin-screw extrusion reactor is 85 rpm, and the residence time of the material in it is 16 minutes. The material from the outlet of the twin-screw extrusion reactor enters the aging kettle for aging for 40 minutes, the aging temperature is controlled at 360°C, and the aged material overflows through the outlet at the upper end of the aging kettle. The obtained material was subjected to acid treatment according to a conventional method, and purified to obtain 43.5 kg ...
Embodiment 2
[0020] The 100kg sodium p-toluenesulfonate solid and the 46kg sodium hydroxide solid are mixed homogeneously in a mixer. Turn on the electric heating to control the temperature of the twin-screw extrusion reactor to 350° C., and then feed the mixed material into the twin-screw extrusion reactor at a uniform speed at a rate of 15 kg / h through the feeder. Under the extrusion of the screw, it moves to the other end of the pipeline and undergoes an alkali fusion reaction at the same time. The rotation speed of the twin-screw extrusion reactor is 280 rpm, and the residence time of the material in it is 5 minutes. The material from the outlet of the twin-screw extrusion reactor enters the aging kettle for aging for 40 minutes, the aging temperature is controlled at 360°C, and the aged material overflows through the outlet at the upper end of the aging kettle. The obtained material was subjected to acid treatment according to a conventional method, and then purified to obtain 41.2 kg...
Embodiment 3
[0022] The 100kg sodium p-toluenesulfonate solid and the 50kg sodium hydroxide solid are mixed homogeneously in a mixer. Turn on the electric heating to control the temperature of the twin-screw extrusion reactor to 340°C, and then feed the mixed materials into the twin-screw extrusion reactor at a uniform speed through the feeder at a rate of 15kg, / h. Under the extrusion of the screw, it moves to the other end of the pipeline and simultaneously undergoes an alkali fusion reaction. The speed of the twin-screw extrusion reactor is 280 rpm, and the residence time of the material in it is omln. The material from the outlet of the twin-screw extrusion reactor enters the aging kettle for aging for 40 minutes, the aging temperature is controlled at 360°C, and the aged material overflows through the outlet at the upper end of the aging kettle. The obtained material was subjected to acid treatment according to a conventional method, and purified to obtain 42.7 kg of p-cresol crude pro...
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