abundant organic polymers, mainly from the pulp and paper industry. Isolated from the plant each year about 1.4t cellulose, and lignin get 5000t. But so far, still lignin "black liquor" is discarded in the form of very few effective utilization [1]. Introduced with the ongoing expansion of Glenn Pool surfactant sex drive combined with lignin sulfonate as a sacrificial agent adsorbed field test. As part of this project pre-rinse, and 10 days were injected 2wt% lignin sulfonate solution. Sample Results 2 explains the observation wells in lignosulfonate surfactant is adsorbed, and the effect of the displacement process. Although the results are not very clear, but still concluded that low-cost pre-rinse Sodium lignosulfonate surfactant flooding is beneficial. Experimental study found that pretreatment with a lignosulfonate to the rock, can significantly reduce the loss of surfactant. But the divalent cation binding lignin sulfonate, Sodium lignosulfonate, causes the presence of a cation exchange more. Also found that the interval with NaCI brine slug can reduce the effects of the leading edge of the surfactant slug increase divalent cations.
Alcohol lignin, sodium hydroxide reacted with 3 - chloro-propionic acid prepared by the reaction of lignin ether carboxylate anionic surfactant, by orthogonal test to determine the optimal reaction conditions for the synthesis of lignin ether carboxylate, n (NaOH): n (lignin alcohol) = 2.5, n (3 - chloro-propionic acid): n (lignin alcohol) = 1.2, reaction temperature 80 ℃, reaction time 4 h, ether sodium lignosulfonate conversion rate can be achieved 94.8%. Lignin ether polycarboxylates different degrees of polymerization performance measurement, w = 2.5% of the surface tension can be achieved 41.2 mN / m, lime soap dispersion index of 4.8% ~ 8.4%; turpentine emulsion force 31 s, foam height is 30 ~ 50 mm. Ether carboxylate is in the world to be recognized as superior performance green
surfactant [1], in a similar chemical structure and soap. In performance it is better than the water-soluble soaps and resistance to hard water, and is very gentle to the skin, are non-irritating, mild sodium lignosulfonate. Ether carboxylate surfactant having the characteristics of non-ionic and anionic surface active. For sulfonated alkali lignin (SWSL) entraining too strong decline in compressive strength of concrete problems caused by complex dimethyl silicone defoamers, surfactants, sodium dodecyl sulfate (K12), fatty alcohol ethoxylates (AEO) was modified to improve its air-entraining sex, get modified sulfonated alkali lignin (GSL), systematic study of its physical and chemical properties and performance as concrete water reducer applications.
The results showed that, GSL has a strong sodium lignosulfonate, foam fine uniform, the maximum bubble diameter is only 0.5mm. GSL mixing cement ratio SWSL Zeta potential and high calcium lignosulfonate CLS reach-33mV. Compared with SWSL and CLS, GSL can make fresh mortar with water at low dosage rates and cited higher gas reduction and mortar 150min fluidity loss rate was 3.8%. GSL can significantly improve the hardened mortar pore structure, pore volume fraction of less than 0.02mm holes up to 81.5%. Wood sodium lignosulphonate. Content w (GSL) = 0.25%, the concrete water-reducing rate of 13.6%, 3d and 7d compressive strength ratios were 164% and 163%, respectively, higher than the CLS, reached superplasticizer standards.
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