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Processing technique of naphthalene water-reducing agent or its homologous dispersant

A naphthalene-based water reducer and production process technology, applied in the field of water reducer production, can solve problems such as large quality fluctuations, adverse effects on equipment life, and high labor intensity of workers, so as to reduce labor intensity and human factors, and facilitate stability and process control, prolonging the effect of equipment service life

Inactive Publication Date: 2012-04-25
四川吉龙化学建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. The temperature of the reactor changes periodically, which has a negative impact on the life of the equipment;
[0005] 2. The entire process is manually operated, and the labor intensity of the workers is high, which is not conducive to the production operation and process control of the workers; and the quality fluctuation caused by human factors is too large, which is not conducive to the demand for stable product quality;
[0006] 3. The intermittent production cycle is too long, the production efficiency is low, the equipment utilization rate is low, and the energy consumption in the production process is too large, resulting in waste of labor and energy consumption, which is not conducive to energy saving and consumption reduction

Method used

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  • Processing technique of naphthalene water-reducing agent or its homologous dispersant
  • Processing technique of naphthalene water-reducing agent or its homologous dispersant

Examples

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Effect test

Embodiment 1

[0045] This embodiment is a production process of a naphthalene-based high-efficiency water reducer:

[0046] Such as figure 1 As shown in the process flow, it includes main steps such as melting naphthalene, sulfonation reaction, hydrolysis reaction, condensation reaction, and neutralization reaction; the sulfonation reaction is a three-stage sulfonation reaction, and the condensation reaction is a four-stage condensation reaction. The specific operation of each step is as follows:

[0047] (1) Fused naphthalene:

[0048] Concentrate industrial naphthalene in a melting pot to melt naphthalene, and obtain molten industrial naphthalene at 100°C;

[0049] (2) Tertiary sulfonation reaction:

[0050] a. The first stage sulfonation reaction:

[0051]Put the liquid industrial naphthalene in the molten state obtained in the above step (1) into the 1# sulfonation kettle at 50kg / h through the liquid raw material metering pump, and simultaneously put sulfuric acid into the 1# sulfon...

Embodiment 2

[0071] This example is a production process of a solid naphthalene-based high-efficiency water reducer:

[0072] Such as figure 1 As shown in the process flow, it includes main steps such as melting naphthalene, sulfonation reaction, hydrolysis reaction, condensation reaction, and neutralization reaction; the sulfonation reaction is a three-stage sulfonation reaction, and the condensation reaction is a four-stage condensation reaction. The specific operation of each step is as follows:

[0073] (1) Fused naphthalene:

[0074] Concentrate industrial naphthalene in a melting pot to melt naphthalene, and obtain molten industrial naphthalene at 100°C;

[0075] (2) Tertiary sulfonation reaction:

[0076] a. The first stage sulfonation reaction:

[0077] Put the liquid industrial naphthalene in the molten state obtained in the above step (1) into the 1# sulfonation kettle through the liquid raw material metering pump at 50kg / h, and simultaneously put sulfuric acid into the 1# su...

Embodiment 3

[0098] This embodiment is a production process of a solid industrial acenaphthene high-efficiency water reducer:

[0099] Such as figure 1 As shown in the process flow, it includes the main steps of melting acenaphthene, sulfonation reaction, hydrolysis reaction, condensation reaction, and neutralization reaction; the sulfonation reaction is a three-stage sulfonation reaction, and the condensation reaction is a three-stage condensation reaction. The specific operation of each step is as follows:

[0100] (1) Fused acenaphthene:

[0101] Concentrate industrial acenaphthene in a melting kettle to melt acenaphthene, and obtain liquid industrial acenaphthene in a molten state at 90°C;

[0102] (2) Tertiary sulfonation reaction:

[0103] a. The first stage sulfonation reaction:

[0104] Put the liquid industrial acenaphthene in the molten state obtained in the above step (1) into the 1# sulfonation kettle at 100kg / h through the liquid raw material metering pump, and simultaneou...

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Abstract

The invention discloses a naphthalene water-reducing agent and a processing technique of homologous dispersant thereof. The processing technique mainly comprises the following steps: melting naphthalene or homologous compound thereof, sulfonation reaction, hydrolysis reaction, condensation reaction and neutralization reaction. The invention is characterized in that the sulfonation reaction is three-class sulfonation reaction, the condensation reaction is three to five class condensation reactions, and the whole technique can realize continuous operation by continuous feeding. The processing technique can realize continuous production of the naphthalene water-reducing agent or the homologous dispersant thereof, thus improving usage rate of equipments and production efficiency, prolonging service life of equipment, reducing manual operation, lowering energy consumption and labor intensity, lessening the impact on product quality from human factors, and being favor of stabilizing productquality.

Description

technical field [0001] The invention relates to the technical field of water reducer production, in particular to a naphthalene-based water reducer or its homologous dispersant (including naphthalenesulfonic acid formaldehyde condensate, acenaphthylenesulfonic acid formaldehyde condensate, sulfonic acid formaldehyde condensate, methylnaphthalenesulfonic acid Acid formaldehyde condensate, etc.) production process. Background technique [0002] Naphthalene-based (high-efficiency) water-reducers and their homologous dispersants are currently the most widely used concrete water-reducers in China. Naphthalene series or its homologues are used as the main raw material to form a liquid high-efficiency water reducing agent through melting naphthalene or its homologues, sulfonation reaction, hydrolysis reaction, condensation reaction, and neutralization reaction, and then dried to obtain a naphthalene-based high-efficiency water reducing agent. agent or its homologous dispersant pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/22C04B103/40C04B103/30
Inventor 徐世强沈依勇李应斌
Owner 四川吉龙化学建材有限公司
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