Method for preparing powder material by polymer solvent removal
A technology of polymer powder and polymer, which is applied in the field of chemical production, can solve the problems of high production cost, large investment in equipment, high energy consumption, etc., and achieve the effects of quality improvement, wide range and strong adaptability
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[0022] Example 1
[0023] A method for removing polymer solvents to prepare powder materials, the steps are:
[0024] (1) First, the 5wt% SEBS polymer glue and superheated steam with a pressure of 1.0MPa and a temperature of 180℃ are sent into the drying tower through an ejector for spray drying to obtain polymer powder, and the temperature in the drying tower is controlled at 140-190℃ ; The polymer glue is a mixture of SEBS and n-hexane solvent;
[0025] (2). Then the polymer powder is sent to the cyclone separator to remove the organic solvent and water vapor. The temperature in the cyclone separator is controlled at 135-185℃, and the feed rate of the cyclone separator is controlled at 5-8m / s;
[0026] (3) Then the polymer powder is sent to a fluidized bed dryer for drying; the temperature of the fluidized bed is controlled at 80°C, and the fluidization time is 30 minutes.
[0027] (4) Finally, the polymer powder is sent to the product silo and then to the packaging machine for pac...
Example Embodiment
[0028] Example 2
[0029] A method for removing polymer solvents to prepare powder materials, the steps are:
[0030] (1) Firstly, 40wt% SEBS polymer glue and superheated steam with a pressure of 2.5MPa and a temperature of 230℃ are sent into the drying tower through an ejector for spray drying to obtain polymer powder. The temperature in the drying tower is controlled at 140-190℃ ; The polymer glue is a mixture of SEBS and n-hexane solvent;
[0031] (2). Then the polymer powder is sent to the cyclone separator to remove organic solvents and water vapor. The temperature in the cyclone separator is controlled at 135-185℃, and the feed speed of the cyclone separator is controlled at 5-8m / s;
[0032] (3) Then the polymer powder is sent to a fluidized bed dryer for drying; the temperature of the fluidized bed is controlled at 150°C, and the fluidization time is 15 minutes.
[0033] (4) Finally, the polymer powder is sent to the product silo and then to the packaging machine for packaging...
Example Embodiment
[0034] Example 3
[0035] A method for removing polymer solvents to prepare powder materials, the steps are:
[0036] (1) Firstly, 25wt% SEBS polymer glue and superheated steam with pressure of 1.3MPa and temperature of 200℃ are sent into the drying tower through the ejector for spray drying to obtain polymer powder. The temperature in the drying tower is controlled at 140-190℃ ; The polymer glue is a mixture of SEBS and n-hexane solvent;
[0037] (2). Then the polymer powder is sent to the cyclone separator to remove organic solvents and water vapor. The temperature in the cyclone separator is controlled at 135-185℃, and the feed speed of the cyclone separator is controlled at 5-8m / s;
[0038] (3) Then the polymer powder is sent to a fluidized bed dryer for drying; the temperature of the fluidized bed is controlled at 120°C, and the fluidization time is 25 minutes.
[0039] (4) Finally, the polymer powder is sent to the product silo and then to the packaging machine for packaging an...
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