In addition, the akin of Ph bulk anon affects the acidity of sodium ligno sulphonate acknowledgment system. First, because the hydrolysis acknowledgment NA2SO3 NAhSO3, in the acerb range, Ph bulk college acidity smaller, the bigger NA2SO3 hydrolysis, thereby announcement the reaction, the crop access sulfonation. Correlation amid the absorption of the sulfonated lignin crop can be apparent from Figure 6, the crop of sodium ligno sulphonate with accretion concentrations of awkward decreased substantially. The awkward lignin absorption of beneath than 52 5g / L ambit with the lignin concentration, the access in the dissolution of lignin and appropriately a slight access in the crop of sulfonation; If base lignin absorption greater than 52 5g / L, the acknowledgment arrangement dissolution of sodium ligno sulphonate by the solubility absolute of the colorant acidity undergrowth, mostly chapped presence, increases the bendability of the acknowledgment arrangement is not accessory to movement of agitator blow and the crop increases with the abatement in the lignin content.
The absorption of the awkward acknowledgment altitude optimal for lignin 52 5g / L. 2 6 NA2SO3 accord amid the bulk of sulfonation yields apparent from Figure 7, with NA2SO3 accumulation atom increases, the crop of sodium ligno sulphonate is accretion rapidly. In NA2SO3 the sulfonation acknowledgment a sulfonating abettor are nucleophilic barter acknowledgment [17]. The hydrolysis acknowledgment of the aboriginal action NA2SO3 NAhSO3, beneath assertive altitude appear with sulfonated lignin effect. According to the basal laws of chemistry, the greater the absorption of reactants, the acknowledgment gain added bound and thoroughly. Beneath assertive affairs sodium ligno sulphonate content, NA2SO3 college the concentration, the hydrolysis acknowledgment arrangement to accommodate for added hSO-3, added hSO-3 decidedly added its contacts with the blow of lignin advance the acknowledgment rate. But NA2SO3 bulk over. General artefact consistent ash increased, while the bulk of top NA2SO3 not alone access costs, but aswell adulterate the ambiance [4].
In the ambit of 100 ℃ ~ 120 ℃ added as the acknowledgment temperature increases the crop of sulfonation; if the temperature is college than 120 ℃ yields no cogent change in the access of alone 1 to 140 ℃. 6%, assuming that 120 ℃ bread-and-butter acknowledgment temperature. (2) if P> 2 0 × 105PA while little aftereffect on yield; kettle from a burden about up (1 5 ~ 2 0) × 105PA, With the absorption of sodium ligno sulfonate crop basal, so the burden should be aural the kettle into a pressure-based. (3) Acknowledgment 1 5h essentially best yield; sulfonation beneath acerb altitude yields access with accretion ethics ??of Ph.
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The absorption of the awkward acknowledgment altitude optimal for lignin 52 5g / L. 2 6 NA2SO3 accord amid the bulk of sulfonation yields apparent from Figure 7, with NA2SO3 accumulation atom increases, the crop of sodium ligno sulphonate is accretion rapidly. In NA2SO3 the sulfonation acknowledgment a sulfonating abettor are nucleophilic barter acknowledgment [17]. The hydrolysis acknowledgment of the aboriginal action NA2SO3 NAhSO3, beneath assertive altitude appear with sulfonated lignin effect. According to the basal laws of chemistry, the greater the absorption of reactants, the acknowledgment gain added bound and thoroughly. Beneath assertive affairs sodium ligno sulphonate content, NA2SO3 college the concentration, the hydrolysis acknowledgment arrangement to accommodate for added hSO-3, added hSO-3 decidedly added its contacts with the blow of lignin advance the acknowledgment rate. But NA2SO3 bulk over. General artefact consistent ash increased, while the bulk of top NA2SO3 not alone access costs, but aswell adulterate the ambiance [4].
In the ambit of 100 ℃ ~ 120 ℃ added as the acknowledgment temperature increases the crop of sulfonation; if the temperature is college than 120 ℃ yields no cogent change in the access of alone 1 to 140 ℃. 6%, assuming that 120 ℃ bread-and-butter acknowledgment temperature. (2) if P> 2 0 × 105PA while little aftereffect on yield; kettle from a burden about up (1 5 ~ 2 0) × 105PA, With the absorption of sodium ligno sulfonate crop basal, so the burden should be aural the kettle into a pressure-based. (3) Acknowledgment 1 5h essentially best yield; sulfonation beneath acerb altitude yields access with accretion ethics ??of Ph.
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http://www.whxydchem.com/index_en.html