Pressurization density method production technique and device for controlling sulfonation rate in sulfonation production of anionic surfactant
A surfactant and production process technology, applied in the field of stable control of sulfonation rate and automation, can solve the problems of many control variables, high control cost, control error, etc., and achieve the effect of simple modification structure, low cost and convenient operation.
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Embodiment 1
[0031] AEO 2 Enter the membrane tube sulfonator through the organic material pump, SO 3 The gas enters from the top of the membrane sulfonator. The separated tail gas goes to the tail gas absorption system; after the ester comes out of the gas-liquid separator, it is transported to the neutralization system by the ester pump, the outlet pressure of the ester pump is kept at 0.6MPa through the back pressure valve, and the outlet density of the ester pump is Control between 1.0220~1.0230g / ml. After the whole system is stabilized, the ester neutralization value is stable at 111.0~112.0mgNaOH / g.
[0032] Under this process, the AES product index that obtains is active matter 70.1%, sulfate 0.6%, unsulfurized matter 1.0%, color and luster 15Hazen (10% ethanol aqueous solution of 5% active matter; promptly comprise the active matter of 5% volume content in the product , 10% ethanol aqueous solution by volume; the same below).
Embodiment 2
[0034] α-olefin enters the membrane tube sulfonator through the organic material pump, and SO3 gas enters from the top of the membrane sulfonator. The separated tail gas goes to the tail gas absorption system; after the ester comes out of the gas-liquid separator, it is transported to the neutralization system by the ester pump, the outlet pressure of the ester pump is kept at 0.5MPa through the back pressure valve, and the outlet density of the ester pump is Control between 0.9770~0.9780g / ml. After the whole system is stabilized, the ester neutralization value is stable at 130.0~131.0mgNaOH / g.
[0035] Under this process, the product obtained has 35% active matter, 1.3% sulfate, 1.2% petroleum ether extract, and 35 Hazen color (10% ethanol aqueous solution of 5% active matter).
Embodiment 3
[0037] The methyl ester enters the membrane tube sulfonator through the organic material pump, and the SO 3 The gas enters from the top of the membrane sulfonator. The separated tail gas goes to the tail gas absorption system; after the ester comes out of the gas-liquid separator, it is transported to the neutralization system by the ester pump, the outlet pressure of the ester pump is kept at 0.6MPa through the back pressure valve, and the outlet density of the ester pump is Control between 1.0230~1.0240g / ml. After the whole system is stabilized, the ester neutralization value is stable at 175~176mgNaOH / g.
[0038] Under this process, the product obtained has 85.0% active matter, 1.0% sulfate, 1.2% petroleum ether extract, and a color of 20 Hazen (10% ethanol aqueous solution of 5% active matter).
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