Energy-saving device for separating maleic anhydride based on multi-stage condensation and two-stage absorption integration and process thereof
A secondary absorption and maleic anhydride technology, applied in the chemical industry, sustainable manufacturing/processing, organic chemistry, etc., can solve the problem of high energy consumption and achieve high maleic anhydride yield, good effect, and significant economic benefits
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Embodiment 1
[0065] An energy-saving process based on multi-stage condensation and two-stage absorption integrated separation of maleic anhydride, comprising the following steps:
[0066] S1, 232251kg / h of air and 8244kg / h of benzene mixed to form the reaction raw material mixed gas 1 enters the maleic anhydride reactor R1 from the reaction raw material inlet, and generates a reaction product mixture with a maleic anhydride content of 3.2% through catalytic oxidation reaction Gas 2; the reaction product mixture gas 2 is cooled to 265°C by the reaction gas primary cooler E1, and enters the reaction gas secondary cooler E2 to continue cooling to 130°C;
[0067] S2. Maleic anhydride reaction gas with 240495kg / h maleic anhydride content of 3.2% is extracted from the outlet of reaction gas secondary cooler E2 and is divided into two streams of materials 4 and 5, which enter the absorption at the flow rates of 151512kg / h and 88983kg / h respectively The 25th tray of tower T1 and the reaction gas t...
Embodiment 2
[0081] An energy-saving process based on multi-stage condensation and two-stage absorption integrated separation of maleic anhydride, comprising the following steps:
[0082] S1, the reaction raw material mixed gas 1 formed by mixing 78144 kg / h of air and 2987 g / h of n-butane enters the maleic anhydride reactor R1 from the reaction raw material inlet, and generates a maleic anhydride content of 3.26% through catalytic oxidation reaction The reaction product mixture gas 2; the reaction product mixture gas 2 is cooled to 278°C by the reaction gas primary cooler E1, and enters the reaction gas secondary cooler E2 to continue cooling to 140°C;
[0083] S2. Maleic anhydride reaction gas with 3.2% maleic anhydride content of 81131kg / h is extracted from the outlet of reaction gas secondary cooler E2 and is divided into two streams of materials 4 and 5, which enter into the absorption at flow rates of 43000kg / h and 38131kg / h respectively The 25th tray of tower T1 and the reaction gas ...
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