Benzoic acid
Although benzoic acid can be made of toluene chlorination process and phthalic acid decarboxylation method, but widely used in industrial production methods at home and abroad for using toluene as raw materials of liquid phase catalytic air oxidation process.
Will dissolve a catalyst, acid cobalt, cobalt naphthenate or cobalt acetate) of toluene and continuous pumping air oxidation tower (or kettle), 140-140 ℃ and 0.3 0.4 MPa pressure oxidation generated benzoic acid.
The tower exhaust gas condenses and activated carbon adsorption to recover the toluene and release it.
The reaction fluid of the tower is often used to recover the light components, such as toluene, benzyl methanol, and benzaldehyde, which are not reactive in the initial distillation, and then decompress the distillation of benzoic acid.
The recovered toluene and other return oxidation towers can control over 35% of the conversion of toluene.
At home, the consumption of benzoic acid is 1025-1500kg, which is about 4kg naphthenic acid.
Foreign toluene consumption is 820kg per ton.
Although production method of benzoic acid can be made of toluene chlorination process and phthalic acid decarboxylation legal system, but generally used at home and abroad industrial production method for using toluene as raw materials of liquid phase catalytic air oxidation process.
Will dissolve a catalyst (cobalt naphthenate, cobalt naphthenate or cobalt acetate) of toluene and continuous pumping air oxidation tower (or kettle), in 140 ~ 165 ℃ and 0.3 ~ 0.4 MPa oxide generated under the pressure of benzoic acid.
The tower exhaust gas condenses and activated carbon adsorption to recover the toluene and release it.
The reaction fluid of the tower is often used to recover the light components, such as toluene, benzyl methanol, and benzaldehyde, which are not reactive in the initial distillation, and then decompress the distillation of benzoic acid.
The recovered toluene and other return oxidation towers can control over 35% of the conversion of toluene.
At home, the consumption of benzoic acid is 1025 ~ 1500kg, and about 4kg naphthenic acid.
Foreign toluene consumption is 820kg per ton.
2C6CH5CH3 + 3O2 [cobalt salt], 2C6H5COOH
Category flammable solid
Toxicity grade poisoning
Acute toxicity oral - rat LD50:1700 mg/kg;
Oral - mouse LD50:1940 mg/kg
Stimulate data skin - the rabbit 500 mg / 24 hours light;
Eyes - the rabbit 100 milligram is heavy
Explosive explosive dangerous properties and oxidants react strongly;
Its powder burns rapidly in oxygen
Inflammable dangerous properties, hot and flammable;
Burning produces a stimulus smoke
Storage and transport characteristics with low temperature drying;
Separate from the oxidizer
Extinguishing powder, carbon dioxide, fog water
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Will dissolve a catalyst, acid cobalt, cobalt naphthenate or cobalt acetate) of toluene and continuous pumping air oxidation tower (or kettle), 140-140 ℃ and 0.3 0.4 MPa pressure oxidation generated benzoic acid.
The tower exhaust gas condenses and activated carbon adsorption to recover the toluene and release it.
The reaction fluid of the tower is often used to recover the light components, such as toluene, benzyl methanol, and benzaldehyde, which are not reactive in the initial distillation, and then decompress the distillation of benzoic acid.
The recovered toluene and other return oxidation towers can control over 35% of the conversion of toluene.
At home, the consumption of benzoic acid is 1025-1500kg, which is about 4kg naphthenic acid.
Foreign toluene consumption is 820kg per ton.
Although production method of benzoic acid can be made of toluene chlorination process and phthalic acid decarboxylation legal system, but generally used at home and abroad industrial production method for using toluene as raw materials of liquid phase catalytic air oxidation process.
Will dissolve a catalyst (cobalt naphthenate, cobalt naphthenate or cobalt acetate) of toluene and continuous pumping air oxidation tower (or kettle), in 140 ~ 165 ℃ and 0.3 ~ 0.4 MPa oxide generated under the pressure of benzoic acid.
The tower exhaust gas condenses and activated carbon adsorption to recover the toluene and release it.
The reaction fluid of the tower is often used to recover the light components, such as toluene, benzyl methanol, and benzaldehyde, which are not reactive in the initial distillation, and then decompress the distillation of benzoic acid.
The recovered toluene and other return oxidation towers can control over 35% of the conversion of toluene.
At home, the consumption of benzoic acid is 1025 ~ 1500kg, and about 4kg naphthenic acid.
Foreign toluene consumption is 820kg per ton.
2C6CH5CH3 + 3O2 [cobalt salt], 2C6H5COOH
Category flammable solid
Toxicity grade poisoning
Acute toxicity oral - rat LD50:1700 mg/kg;
Oral - mouse LD50:1940 mg/kg
Stimulate data skin - the rabbit 500 mg / 24 hours light;
Eyes - the rabbit 100 milligram is heavy
Explosive explosive dangerous properties and oxidants react strongly;
Its powder burns rapidly in oxygen
Inflammable dangerous properties, hot and flammable;
Burning produces a stimulus smoke
Storage and transport characteristics with low temperature drying;
Separate from the oxidizer
Extinguishing powder, carbon dioxide, fog water