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A kind of synthetic method of modified naphthalene series sulfonate water reducer

A technology of naphthalene sulfonate and synthesis method, which is applied in the field of synthesis of modified naphthalene sulfonate water reducer, can solve the problems of low economic cost and high use efficiency, achieve high concentration, reduce raw material cost, and easy good sex effect

Active Publication Date: 2020-10-09
ZHEJIANG KZJ NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the large amount of high-concentration recycled sulfuric acid produced in the production process of isooctane, there is no ultimate treatment method with low economic cost and high use efficiency

Method used

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  • A kind of synthetic method of modified naphthalene series sulfonate water reducer

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Sulfonation: In parts by mass, add 100 parts of industrial naphthalene to the reactor, and when heating to 120°C, start to drop 130 parts of reclaimed acid, and complete the dropwise addition within 1 hour; when the reclaimed acid is added dropwise, The temperature in the reaction kettle was controlled at 160°C, and the temperature was continued for 3 hours;

[0025] (2) Hydrolysis: in parts by mass, after the sulfonation reaction is completed, cool down to 120°C, add 50 parts of water, and carry out the hydrolysis reaction for 30 minutes;

[0026] (3) Condensation: in parts by mass, after the hydrolysis reaction ends, cool down to 98°C, add dropwise 60 parts of formaldehyde solution with a concentration of 37wt%, and complete the dropwise addition within 2 hours; heat up to 103°C, and keep warm for 3h; Add 15 parts of hot water not lower than 60°C in 2 times to adjust the viscosity of the material, and finally dilute with 300 parts of water according to demand;

...

Embodiment 2

[0029] (1) Sulfonation: In terms of parts by mass, add 100 parts of industrial naphthalene to the reaction kettle, and when the temperature rises to 120°C, start to add 135 parts of recovered acid dropwise, and the dropwise addition is completed within 1.5 hours; when the recovered acid is added dropwise , the temperature in the reactor is controlled at 160°C, and the temperature is kept for 3 hours;

[0030] (2) Hydrolysis: in parts by mass, after the sulfonation reaction is completed, cool down to 120°C, add 50 parts of water, and carry out the hydrolysis reaction for 30 minutes;

[0031] (3) Condensation: in parts by mass, after the hydrolysis reaction ends, cool down to 98°C, add dropwise 63 parts of formaldehyde solution with a concentration of 37wt%, and complete the dropwise addition within 2 hours; heat up to 103°C, and keep warm for 3h; Add 15 parts of hot water not lower than 60°C in 2 times to adjust the viscosity of the material, and finally dilute with 300 parts o...

Embodiment 3

[0034] (1) Sulfonation: In parts by mass, add 100 parts of industrial naphthalene to the reactor, and when the temperature is raised to 120°C, start to add 1358 parts of recovered acid dropwise, and the dropwise addition is completed within 1.5 hours; when the recovered acid is added dropwise , the temperature in the reactor was controlled at 162°C, and the temperature was kept for 4 hours;

[0035] (2) Hydrolysis: in parts by mass, after the sulfonation reaction is completed, cool down to 120°C, add 55 parts of water, and carry out the hydrolysis reaction for 30 minutes;

[0036] (3) Condensation: in parts by mass, after the hydrolysis reaction ends, cool down to 98°C, add dropwise 63 parts of formaldehyde solution with a concentration of 37wt%, and complete the dropwise addition within 3 hours; heat up to 105°C, and keep warm for 5h; Add 18 parts of hot water not lower than 60°C in 2 times to adjust the viscosity of the material, and finally dilute with 300 parts of water as...

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Abstract

The invention discloses a synthesis method of a modified naphthalene sulfonate water reducer, which comprises the following steps: (1) sulfonation, (2) hydrolysis, (3) condensation, and (4) neutralization. A new approach is created for treatment and comprehensive utilization of recovered acid in an isooctane production process; the current situation of pollution of the isooctane industry can be effectively improved; an environment is protected; recovered acid generated in the isooctane production process is comprehensively utilized; and the method has good economic and environmental benefits.

Description

technical field [0001] The invention belongs to the technical field of building admixtures, and in particular relates to a synthesis method of a modified naphthalene-based sulfonate water reducer. Background technique [0002] Isooctane is an important blending component in gasoline in my country. Isooctane has become a high-quality gasoline due to its high octane number, low sensitivity, low Layton vapor pressure, good volatility, combustibility and shock resistance. And an indispensable gasoline blending component. At present, the industry generally adopts the liquid acid alkylation process of isobutane and butene to prepare isooctane. When the reaction unit is concentrated sulfuric acid as a catalyst, isobutane and butene are rapidly reacted in the isooctane reactor. Alkylation reaction is carried out, and after the reaction is completed, a series of impurity removal processes such as concentrated sulfuric acid washing, alkali washing and water washing are used to remove ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/20C04B103/30
CPCC04B24/20C04B2103/302
Inventor 曾贤华朱巧勇黄文耀张乐沈兴强于飞宇
Owner ZHEJIANG KZJ NEW MATERIALS CO LTD
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