Alkali lignin-phenol-sodium sulfanilate-formaldehyde polycondensate and preparation method thereof

A technology of sodium sulfanilate and formaldehyde polycondensation polymer is applied in the field of coal-water slurry additives to achieve the effects of simple production process, easy storage and transportation, and improved comprehensive performance

Active Publication Date: 2012-12-26
FUZHOU UNIV
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  • Description
  • Claims
  • Application Information

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  • Alkali lignin-phenol-sodium sulfanilate-formaldehyde polycondensate and preparation method thereof
  • Alkali lignin-phenol-sodium sulfanilate-formaldehyde polycondensate and preparation method thereof
  • Alkali lignin-phenol-sodium sulfanilate-formaldehyde polycondensate and preparation method thereof

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preparation example Construction

[0043] The specific steps of the preparation method are:

[0044] 1) Preparation of phenolized alkali lignin: the alkali lignin, alkali regulator, phenol and its derivatives and water are reacted at 90-120°C for 1.0-3.0h to obtain phenolized alkali lignin;

[0045] 2) Preparation of semi-condensate: Add catalyst to the phenolic alkali lignin to react for 30 minutes, then add sodium p-aminobenzene sulfonate and half of the formaldehyde solution to continue the reaction for 2.0 to 4.0 hours, the reaction temperature is 90 to 120 ℃, preparation Alkali lignin-phenol-sodium p-aminobenzenesulfonate-formaldehyde semi-condensate;

[0046] 3) Preparation of the product: add sodium sulfite and the other half of the formaldehyde solution, and react for a further 2.0-4.0h at a reaction temperature of 90-120℃ to obtain a liquid alkali lignin-phenol-sodium p-aminobenzenesulfonate-formaldehyde condensation After spray drying, a powder product can be obtained.

[0047] The components and mass parts ...

Embodiment 1

[0061] 1) The raw materials used in this embodiment are as follows:

[0062] Alkali lignin (extracted from the black liquor of eucalyptus pulp by the sulfate method): 100 kg; alkaline regulator (sodium hydroxide): 2 kg; sodium sulfite: 10 kg; phenol and its derivatives (bisphenol A): 115 kg ; Sodium p-aminobenzene sulfonate: 205 kg; formaldehyde (addition in 2 times, 37% content): 150 kg; catalyst (hydrogen peroxide / copper nitrate / sodium thiosulfate, mass ratio 3:2:1) : 12 kg; water: 406 kg.

[0063] 2) The preparation process steps and process parameters of this embodiment:

[0064] (1) Preparation of phenolized alkali lignin: add 100 kg of alkali lignin, 2 kg of sodium hydroxide, 115 kg of bisphenol A and 406 kg of water into the reactor, slowly increase the temperature to 100°C, and react for 2.0 hours to obtain phenolization Alkali lignin.

[0065] (2) Preparation of alkaline lignin-phenol-sodium p-aminobenzenesulfonate-formaldehyde semicondensate: add 12 kg of catalyst hydrogen...

Embodiment 2

[0068] 1) The raw materials used in this embodiment are as follows:

[0069] Alkali lignin (extracted from the black liquor of Masson pine pulp by the sulfate method): 80 kg; alkaline regulator (sodium tetraborate): 18 kg; sodium sulfite: 64 kg; phenol and its derivatives (phenol): 55 kg; Sodium aminobenzene sulfonate: 80 kg; formaldehyde (add in 2 times, 37% content): 115 kg; catalyst (potassium permanganate / ferrous sulfate, mass ratio 1:1): 3 kg; water: 415 kilogram.

[0070] 2) The preparation process steps and process parameters of this embodiment:

[0071] (1) Preparation of phenolized alkali lignin: add 80 kg of alkali lignin, 18 kg of sodium tetraborate, 55 kg of phenol and 415 kg of water into the reactor, slowly increase the temperature to 90℃, and obtain phenolized alkali lignin after 2.5 hours of reaction Vegetarian.

[0072] (2) Preparation of alkali lignin-phenol-sodium p-aminobenzenesulfonate-formaldehyde semicondensate: Add 3 kg of catalyst potassium permanganate / ferr...

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Abstract

The invention relates to alkali lignin-phenol-sodium sulfanilate-formaldehyde polycondensate and a preparation method thereof. The polycondensate is a liquid product or a powder product, and has the weight-average molecular weight Mw of 3,200 to 100,000 and the number-average molecular weight Mn of 1,600 to 50,000; and the preparation method comprises the following steps of: directly performing phenolate reaction on alkali lignin and phenol and derivatives thereof under the alkaline condition to prepare phenolic alkali lignin; performing polycondensation on the phenolic alkali lignin, sodium sulfanilate and formaldehyde; and introducing a large number of active phenolic hydroxyls and sulfonic acid groups onto a framework of the alkali lignin to prepare a coal-water-slurry additive of alkali lignin-phenol-sodium sulfanilate-formaldehyde polycondensate. The alkali lignin-phenol-sodium sulfanilate-formaldehyde polycondensate has not been reported at home and abroad at present. The preparation process is low in production cost, and the process method is simple and convenient; and the production cost of the product can be reduced, and the coal adaptability, stability and dispersibility of the product can be improved.

Description

Technical field [0001] The invention belongs to the field of coal water slurry additives, and more specifically relates to an alkali lignin-phenol-sodium p-aminobenzenesulfonate-formaldehyde polycondensate and a preparation method thereof. Background technique [0002] As a new type of fuel, coal water slurry has become the most competitive product that substitutes coal for oil due to its good fluidity and stability. The factors affecting the slurryability and rheology of coal water slurry are very complex, including the type of coal, chemical properties, particle size distribution and shape, interaction between coal particles, temperature and concentration, etc. [0003] Coal water slurry is a complex multi-stage dispersion suspension system with wide screening and high solid content, which is easy to produce coal-water separation. Therefore, low viscosity and good stability are the most important properties of coal water slurry. To improve these properties, a small amount of c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G14/073C08H7/00C10L1/24
Inventor 刘明华刘以凡
Owner FUZHOU UNIV
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