A kind of processing method of the saponification waste lye of cyclohexanone production process
A technology of production process and treatment method, which is applied in the field of pretreatment of saponification waste lye, can solve the problems of difficult wastewater treatment and complex process, and achieve good economic and social benefits, high recovery value, and obvious economic benefits
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Embodiment 1
[0053] In the neutralization and removal of ammonia reaction device of saponification waste alkali liquor and concentrated solution, the length-to-height ratio of the horizontal phase separator is 1.5, and the outflow nozzle position of the upper oil phase in the phase separator is at the height (H) of the phase separator. At 0.6H, the position of the outflow nozzle of the upper oil phase in the phase separator is at the same level as the nozzle where the water phase enters the deamination reactor in the phase separator, and the reaction temperature in the deamination reactor is controlled at 90°C. The pH of the reaction solution is > 7, and the generated ammonia gas entrains water vapor and organic low boilers to escape from the mixed solution in a gaseous state. After cooling by the tower top condenser and phase separation by the phase separator, the recycled ring The content of cyclohexanone in the hexanone crude liquid is 50%.
Embodiment 2
[0055] In the neutralization and removal of ammonia reaction device of saponification spent caustic lye and concentrated solution, the length-to-height ratio of the horizontal phase separator is 3.5, and the outflow nozzle position of the upper oil phase in the phase separator is at the height (H) of the phase separator. At 0.8H, the position of the outflow nozzle of the upper oil phase in the phase separator is at the same level as the nozzle of the water phase entering the deamination reactor in the phase separator, and the reaction temperature in the deamination reactor is controlled at 100°C. The pH of the reaction solution is > 7, and the generated ammonia gas entrains water vapor and organic low boilers to escape from the mixed solution in a gaseous state. After cooling by the tower top condenser and phase separation by the phase separator, the recycled ring The content of cyclohexanone in the hexanone crude liquid is 58%.
Embodiment 3
[0057] In the neutralization and removal of ammonia reaction device of saponification spent caustic lye and concentrated solution, the length-to-height ratio of the horizontal phase separator is 5.0; At 0.7H, the position of the outflow nozzle of the upper oil phase in the phase separator is at the same level as the nozzle of the water phase entering the deamination reactor in the phase separator. The pH of the reaction solution is > 7, and the generated ammonia gas entrains water vapor and organic low boilers to escape from the mixed solution in a gaseous state. After cooling by the tower top condenser and phase separation by the phase separator, the recycled ring The content of cyclohexanone in the hexanone crude liquid is 70%.
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