New technology for separating nitride in production of 2-cyano-4-nitroaniline
A technology of nitroaniline and new process is applied in the new process field of nitrate separation in the production of 2-cyano-4-nitroaniline, and can solve the problems of incomplete precipitation of nitrates, difficult handling of dilute sulfuric acid, complicated process operation and the like , to achieve the effect of shortening the production cycle, small output and increasing production capacity
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Embodiment 1
[0019] Major equipment:
[0020] serial number
Specification
material
use
1.
Water analysis kettle
10000L
enamel
Dilute with water
2.
Extraction phase separation tank
15000L
enamel
Chlorinated benzene extraction
[0021] The amount and quality of extraction raw materials
[0022]
[0023]
[0024] Add 4,000 kg of process water into the water analysis kettle, start stirring, slowly put in the nitrated nitrated product, and control the temperature at 30-35°C. Add 5,000 kilograms of chlorinated benzene after feeding, stir for half an hour and let it stand for half an hour. By separation, the oil phase obtains a chlorinated benzene solution of 2-cyano-4-nitrochlorobenzene, and the water phase obtains a concentration-diluted benzene solution. sulfuric acid.
[0025] Test results: the acid concentration in the water phase is 60.5%, and does not contain 2-cyano-4-nitrochlorobenzene; the oil ...
Embodiment 2
[0027] Major equipment:
[0028] serial number
Specification
material
use
1.
Water analysis kettle
10000L
enamel
Dilute with water
2.
Extraction phase separation tank
15000L
enamel
Chlorinated benzene extraction
[0029] The amount and quality of extraction raw materials
[0030] process
Weight (Kg)
Water analysis
process water
4000
extraction
Extractant: Chlorinated Benzene
6000
[0031] Add 4,000 kg of process water into the water analysis kettle, start stirring, slowly put in the nitrated nitrated product, and control the temperature at 30-35°C. Add 6,000 kilograms of chlorinated benzene after discharging the material, leave it to stand for half an hour after stirring for half an hour, and through separation, the oil phase obtains a chlorinated benzene solution of 2-cyano-4-nitrochlorinated benzene, and the water phase obta...
Embodiment 3
[0034] Major equipment:
[0035] serial number
Specification
material
use
1.
Water analysis kettle
10000L
enamel
Dilute with water
2.
Extraction phase separation tank
15000L
enamel
Chlorinated benzene extraction
[0036] The amount and quality of extraction raw materials
[0037] process
Weight (Kg)
Water analysis
process water
3500
extraction
Extractant: Chlorinated Benzene
5000
[0038] Add 3,500 kg of process water into the water analysis tank, start stirring, slowly put in the nitrated nitrated product, and control the temperature at 30-35°C. Add 5,000 kilograms of chlorinated benzene after feeding, stir for half an hour and let it stand for half an hour. By separation, the oil phase obtains a chlorinated benzene solution of 2-cyano-4-nitrochlorobenzene, and the water phase obtains a concentration-diluted benzene solution....
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