Two-step neutralizing method for forming washing agent particles and product containing washing agent particles
A technology for detergent granules and neutralization, which is applied in the direction of detergent compounding agent, liquid component detergent preparation, detergent mixture composition preparation, etc., and can solve problems such as susceptibility to agglomeration and caking, limited fluidity, etc.
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Embodiment I
[0094] Aqueous surfactant acid precursor HLAS with 97% activity, 1% free water, 1% H2SO4 and 1% miscellaneous was pumped into the static mixer at a rate of 3300 kg / hr via a positive displacement pump. Caustic solution NaOH with 50% activity was also pumped into the static mixer at a rate of 120 kg / hr. The mixture after the static mixer was pumped into a Lodige CB 75 at a rate of 3420 kg / hr. At the same time, a powder stream comprising sodium carbonate was also fed to a Lodige CB 75 mixer at a rate of 6.5 ton / hr. Also flowing into the same mixer are two streams of sorted recycle comprising agglomerates, one comprising wet coarse particles and the other comprising dry fines. The agglomerates leaving the Lodige CB75 mixer were fed into a Lodige KM 4200 mixer. Thereafter, the agglomerates were fed into a fluid bed dryer at an air inlet temperature ranging from 90C to 140C. The air inlet temperature and air flow are adjusted to achieve a final humidity of less than 1.5% for the ...
Embodiment II
[0096] Aqueous surfactant acid precursor HLAS with 97% activity, 1% free water, 1% H2SO4 and 1% miscellaneous was pumped into the static mixer at a rate of 3300 kg / hr via a positive displacement pump. Caustic solution NaOH with 50% activity was also pumped into the static mixer at a rate of 180 kg / hr. The mixture after the static mixer was passed through a heat exchanger to reduce the temperature to 70C. The mixture was then pumped into the Lodige CB 75 at a rate of 3480 kg / hr. At the same time, a powder stream comprising sodium carbonate was also fed to a Lodige CB 75 mixer at a rate of 6.5 ton / hr. Also flowing into the same mixer are two streams of sorted recycle comprising agglomerates, one comprising wet coarse particles and the other comprising dry fines. The agglomerates leaving the Lodige CB75 mixer were fed into a Lodige KM 4200 mixer. Thereafter, the agglomerates were fed into a fluid bed dryer at an air inlet temperature ranging from 90C to 140C. The air inlet te...
Embodiment III
[0098] Aqueous surfactant acid precursor HLAS with 97% activity, 1% free water, 1% H2SO4 and 1% miscellaneous was pumped at a rate of 330 kg / hr into the static mixer via a positive displacement pump. Caustic solution NaOH with 50% activity was also pumped into the static mixer at a rate of 10 kg / hr. The mixture after the static mixer was pumped to a storage tank with a water jacket, where the temperature of the jacket was controlled at 50C to 80C. 22 kg of sodium carbonate powder material was added to a batch agglomeration plowshare mixer. Then, 8 kg of the HLAS / NaOH mixture was pumped at a rate of 2 kg / min into the plowshare agitator via a positive displacement pump. Add the liquid mixture to the chopper position. After metering the liquid mixture, the stirrer was stopped and then an additional 0.07 kg of zeolite was added to the batch stirrer. Run the mixer continuously for another 2 minutes. The final product is a free-flowing detergent granule. The partial neutralizat...
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Abstract
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