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Energy-efficient sulfonation reaction device and method for naphthalene water reducers

A naphthalene-based water-reducing agent and sulfonation reaction technology, applied in chemical instruments and methods, chemical/physical/physical-chemical stationary reactors, chemical/physical processes, etc., can solve the problem of low heat utilization efficiency and uneven heating , long reaction time of the synthesis process, etc., to achieve the effect of improving efficiency and reducing cost

Pending Publication Date: 2019-02-26
山东万山化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This heat supply method leads to a long reaction time of the synthesis process, and it generally takes 14 to 17 hours for the entire reaction to be completed, resulting in a series of problems such as low heat utilization efficiency and uneven heat supply.

Method used

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  • Energy-efficient sulfonation reaction device and method for naphthalene water reducers

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A high-efficiency and energy-saving naphthalene-based water reducer sulfonation reaction device, including a sulfonation reactor 1, the top of the sulfonation reactor 1 is provided with a waste gas outlet 2; the outer wall of the sulfonation reactor 1 is provided with a jacket 3 , the lower part of the jacket 3 is provided with a heat transfer oil inlet 4, and the top of the jacket 3 is provided with a heat transfer oil outlet 5, and the heat transfer oil inlet 4 and the heat transfer oil outlet 5 are respectively connected with the heat transfer oil heating cycle device The outlet is connected to the inlet; the jacket 3 is provided with a baffle 6 extending spirally from the heat transfer oil inlet 4 to the heat transfer oil outlet 5, and the baffle 6 separates the jacket 3 into a spiral flow road. The sulfonation reactor 1 is provided with a stirring device 7 . It also includes a naphthalene melting tank 8; the outer wall of the naphthalene melting tank 8 is provided...

Embodiment 2

[0033] (1) Put solid industrial naphthalene into the naphthalene melting kettle, and enter high-temperature steam (above 100° C.) from the steam inlet into the heating channel of the naphthalene melting kettle. When the temperature in the naphthalene melting kettle reaches 80° C., the industrial naphthalene starts Melting; when the industrial naphthalene is completely melted, it is transported from the material outlet to the sulfonation reactor through a gear pump.

[0034] (2) Import high-temperature heat-conducting oil with a temperature of 135°C into the jacket of the sulfonation reaction kettle from the heat-conduction oil inlet, heat the sulfonation reaction kettle, and simultaneously weigh it according to the weight ratio of industrial naphthalene:concentrated sulfuric acid of 1.0 For 98% concentrated sulfuric acid, heat up to 128°C, start stirring, and start to add concentrated sulfuric acid dropwise; the sulfuric acid is added dropwise for 0.9 hours, and then react at a...

Embodiment 3

[0037](1) Put solid industrial naphthalene into the naphthalene melting kettle, and enter high-temperature steam (above 100° C.) from the steam inlet into the heating channel of the naphthalene melting kettle. When the temperature in the naphthalene melting kettle reaches 80° C., the industrial naphthalene starts Melting; when the industrial naphthalene is completely melted, it is transported from the material outlet to the sulfonation reactor through a gear pump.

[0038] (2) Import high-temperature heat-conducting oil with a temperature of 140°C into the jacket of the sulfonation reaction kettle from the heat-conduction oil inlet, heat the sulfonation reaction kettle, and simultaneously weigh it according to the weight ratio of industrial naphthalene:concentrated sulfuric acid of 1.05 For 98% concentrated sulfuric acid, heat up to 135°C, start stirring, and start to add concentrated sulfuric acid dropwise; the sulfuric acid is added dropwise for 0.5h, and then the temperature...

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Abstract

The invention discloses an energy-efficient sulfonation reaction device and method for naphthalene water reducers. The energy-efficient sulfonation reaction device comprises a sulfonation reactor, wherein a waste gas outlet is formed in the top of the sulfonation reactor; a jacket is arranged on the out wall of the sulfonation reactor, a heat conducting oil inlet is formed in the lower part of thejacket, a heat conducting oil outlet is formed in the top of the jacket; the device further comprises a naphthalene melting kettle; a heating runner is arranged on the outer wall of the naphthalene melting kettle; the exhaust gas outlet in the top of the sulfonation reactor is communicated with the hot runner of the naphthalene melting kettle through an exhaust fan. According to the method, the device is used, the sulfonation reactor is heated by heat conducting oil, the heating temperature is stable and accurate, and production efficiency of the naphthalene water reducers is improved; high-temperature gas of sulfonation reaction is directly used as a heat source for melting industrial naphthalene, and melting of industrial naphthalene is simultaneously performed in the sulfonation reaction process, so that the period of the whole process is greatly shortened, and production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of water reducers, in particular to a naphthalene-based water reducer sulfonation reaction device and a production process. Background technique [0002] Water-reducing agent is an admixture with water-reducing effect in concrete, which can improve construction conditions without increasing the water consumption of one party; improve the flexural and compressive strength of concrete; enhance the performance of concrete such as frost resistance and impermeability; at the same time, it can significantly Improve the workability and fluidity of concrete, improve the durability of concrete; or under the condition that the fluidity of concrete is basically the same and does not affect the workability, reduce the unilateral water consumption of concrete, reduce the water-binder ratio, and save the amount of unilateral cementitious materials. Water reducing agent has become the fifth necessary component of modern co...

Claims

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Application Information

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IPC IPC(8): B01J19/18B01J6/00
CPCB01J19/0013B01J6/005B01J19/18B01J2219/00094
Inventor 王培东
Owner 山东万山化工有限公司
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