Method for preparing fatty acid by illegal cooking oil
A fatty acid and waste oil technology, applied in the field of oleochemical industry, to achieve the effect of short process, simple equipment and cost saving
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Embodiment 1
[0018] The method of utilizing waste oil to prepare fatty acid is:
[0019] A. Send water into the steam generator, control the temperature of the steam generator to 110°C and the pressure to 0.10MPa, so that the water evaporates into steam;
[0020] B. Send waste oil with an acid value of 161mgKOH / g into the hydrolysis reactor, and control the temperature of the hydrolysis reactor to 200°C and the pressure to 0.10MPa;
[0021] C, the water vapor of step A is 250m 3 The flow rate of / h is sent to the hydrolysis reaction kettle of step B, so that the waste oil is hydrolyzed with water vapor under high temperature conditions, and fatty acid, crude glycerin and oil are obtained by hydrolysis;
[0022] The fatty acids obtained in steps D and C enter into the condenser along with water vapor, and after conventional condensation, enter the fatty acid separator, control the temperature of the fatty acid separator to be 50° C., and the pressure to be 0.11 MPa to separate the fatty ac...
Embodiment 2
[0026] The method of utilizing waste oil to prepare fatty acid is:
[0027] A. Send water into the steam generator 3, control the temperature of the steam generator 3 to be 105°C and the pressure to be 0.12MPa, so that the water is evaporated into steam;
[0028] B. Send waste oil with an acid value of 163mgKOH / g into the hydrolysis reactor 2, and control the temperature of the hydrolysis reactor 2 to be 250°C and the pressure to be 0.12MPa;
[0029] C, the water vapor of step A is 200m 3 The flow rate of / h is sent into the hydrolysis reaction kettle 2 of step B, so that the waste oil is hydrolyzed with water vapor under high temperature conditions, and fatty acid, crude glycerin and oil are obtained by hydrolysis;
[0030] D, the fatty acid obtained in step C enters the condenser 5 along with water vapor, and after conventional condensation, enters the fatty acid separator 4 again, and the temperature of the fatty acid separator 4 is controlled to be 50°C and the pressure i...
Embodiment 3
[0034] The method of utilizing waste oil to prepare fatty acid is:
[0035] A. Send water into the steam generator 3, control the temperature of the steam generator 3 to be 100°C and the pressure to be 0.15MPa, so that the water is evaporated into steam;
[0036] B. Send waste oil with an acid value of 162mgKOH / g into the hydrolysis reactor 2, and control the temperature of the hydrolysis reactor 2 to be 230°C and the pressure to be 0.09MPa;
[0037] C, the water vapor in step A is 225m 3 The flow rate of / h is sent into the hydrolysis reaction kettle 2 of step B, so that the waste oil is hydrolyzed with water vapor under high temperature conditions, and fatty acid, crude glycerin and oil are obtained by hydrolysis;
[0038] D, the fatty acid obtained in step C enters the condenser 5 along with water vapor, and after conventional condensation, enters the fatty acid separator 4 again, and the temperature of the fatty acid separator 4 is controlled to be 80°C and the pressure i...
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