High-concentration naphthalene water reducer production device

Abstract

The utility model relates to the technical field of water reducing agent production equipment, and discloses a high-concentration naphthalene water reducing agent production device which comprises a sulfonation kettle, a condensation kettle, a neutralization kettle, a centrifugal machine and a finished product storage tank which are sequentially communicated through pipelines, valves and pumps, a discharge port of the sulfonation kettle is communicated to a feed port of the condensation kettle, a discharge port of the condensation kettle is communicated to a feed port of the neutralization kettle, a discharge port of the neutralization kettle is communicated to a feed port of the centrifugal machine, a discharge port of the centrifugal machine is provided with a solid material outlet and a liquid material outlet, and the liquid material outlet is communicated to a feed port of the finished product storage tank; a circulating pipe communicated with the upper part and the lower part of the kettle body is arranged outside the kettle body of the neutralization kettle; and a circulating pump is arranged at the lower part of the circulating pipe. The device is simple in structure, deposition of calcium sulfate is effectively prevented, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water reducing agent production equipment, in particular to a high-concentration naphthalene-based water reducing agent production device. Background Art

[0002] Naphthalene water reducer is the most widely used high-efficiency water reducer (accounting for more than 70% of the water reducer dosage) with the largest current production volume in my country. It is characterized in that the water reduction rate is higher, air is not entrained, the effect on the setting time is small, the compatibility with cement is relatively good, and it can be used in combination with other various admixtures, and the price is relatively cheap. At present, in the production of naphthalene water reducer, the raw materials used for neutralization reaction are different, and the products obtained are different. If only sodium hydroxide is used for neutralization, the sodium sulfate generated in the product reaches 20%, and what is obtained is a low-concentration water reducer. If a small amount of sodium hydroxide is used for neutralization, the sodium sulfate content obtained is only less than 10%, and the product is a high-concentration water reducer. The price of high-concentration water reducer has obvious advantages, so manufacturers will give priority to the production of high-concentration water reducer, but lime water is used for neutralization to generate calcium sulfate precipitate, which will produce sedimentation in the reaction process, which will affect the process of reaction, block the delivery pipeline, etc., and cause difficulties to subsequent production. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a high-concentration naphthalene-based water-reducing agent production device, which overcomes the defects of the prior art, has a simple structure, effectively prevents the deposition of calcium sulfate, and improves the production efficiency.

[0004] In order to solve the above technical problems, the technical solution of the utility model is:

[0005] A high-concentration naphthalene-based water-reducing agent production device comprises a sulfonation kettle, a condensation kettle, a neutralization kettle, a centrifuge and a finished product storage tank which are sequentially connected through pipelines, valves and pumps; the discharge port of the sulfonation kettle is connected to the feed port of the condensation kettle, the discharge port of the condensation kettle is connected to the feed port of the neutralization kettle, the discharge port of the neutralization kettle is connected to the feed port of the centrifuge, the discharge port of the centrifuge is provided with a solid material outlet and a liquid material outlet, and the liquid material outlet is connected to the feed port of the finished product storage tank; the kettle body of the neutralization kettle is provided with a circulation pipe which connects the upper part and the lower part of the kettle body, and the lower part of the circulation pipe is provided with a circulation pump.

[0006] Preferably, the sulfonation kettle is connected to the sulfuric acid tank and the naphthalene tank respectively through pipelines, valves and pumps.

[0007] Preferably, the condensation kettle is connected to the sulfuric acid tank, the formaldehyde tank, the caustic soda tank, the cold water tank and the hot water tank respectively through pipelines, valves and pumps.

[0008] Preferably, the neutralization kettle is connected to the caustic soda tank, the lime water tank and the auxiliary agent tank respectively through pipelines, valves and pumps.

[0009] Furthermore, the caustic soda tank is connected to the neutralization tank and the condensation kettle respectively through a main pipe connecting two branch pipes.

[0010] Furthermore, the sulfuric acid tank is connected to the sulfonation kettle and the condensation kettle respectively through a main pipe connecting two branch pipes.

[0011] Furthermore, the bottoms of the sulfuric acid tank, naphthalene tank, formaldehyde tank, caustic soda tank, cold water tank, hot water tank, lime water tank and additive tank are all provided with metering sensors, and the metering sensors and circulating pumps are electrically connected to the automatic control system; the automatic control system is a DCS automatic control system.

[0012] Preferably, the solid material outlet of the centrifuge is connected to a calcium sulfate storage tank through a pipeline. The calcium sulfate is dried and then sold.

[0013] Due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0014] The utility model arranges a circulation pipe and a circulation pump on the neutralization tank, so that a small amount of calcium sulfate generated during the neutralization reaction will circulate in the reaction liquid all the time, and no sedimentation will occur. Moreover, the flowing liquid can accelerate the reaction speed, thereby improving the production efficiency. After the reaction is completed, the calcium sulfate is transported to the centrifuge together with the liquid for centrifugal separation, and because there is no sedimentation process, the transportation pipeline will not be blocked.

[0015] In short, the device of the utility model has a simple structure, effectively prevents the deposition of calcium sulfate, and improves the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0017] In the figure, 1. sulfonation kettle; 2. condensation kettle; 3. neutralization kettle; 4. centrifuge; 5. finished product storage tank; 6. circulation pump; 7. naphthalene tank; 8. sulfuric acid tank; 9. formaldehyde tank; 10. cold water tank; 11. hot water tank; 12. caustic soda tank; 13. lime water tank; 14. additive tank. DETAILED DESCRIPTION

[0018] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0019] Embodiment 1

[0020] like Figure 1As shown, a high-concentration naphthalene-based water-reducing agent production device comprises a sulfonation kettle 1, a condensation kettle 2, a neutralization kettle 3, a centrifuge 4 and a finished product storage tank 5 which are sequentially connected through a pipeline (not marked), a valve (not marked) and a pump (not marked); the discharge port of the sulfonation kettle 1 is connected to the feed port of the condensation kettle 2, the discharge port of the condensation kettle 2 is connected to the feed port of the neutralization kettle 3, the discharge port of the neutralization kettle 3 is connected to the feed port of the centrifuge 4, the discharge port of the centrifuge 4 is provided with a solid material outlet (not marked) and a liquid material outlet (not marked), and the liquid material outlet is connected to the feed port of the finished product storage tank 5; a circulation pipe (not marked) connecting the upper and lower parts of the kettle body is provided outside the kettle body of the neutralization kettle 3, and a circulation pump 6 is provided at the lower part of the circulation pipe.

[0021] The sulfonation kettle 1 is connected to the naphthalene tank 7 and the sulfuric acid tank 8 through pipelines, valves and pumps respectively; the condensation kettle 2 is connected to the sulfuric acid tank 8, the formaldehyde tank 9, the cold water tank 10, the hot water tank 11 and the caustic soda tank 12 through pipelines, valves and pumps respectively; the neutralization kettle 3 is connected to the caustic soda tank 12, the lime water tank 13 and the auxiliary agent tank 14 through pipelines, valves and pumps respectively.

[0022] During actual production, at a temperature of 135 ℃, add an amount of sulfuric acid and naphthalene in the sulfonation kettle 1, react at 150 ℃ for 120 minutes, acidity still remains between 30%~30.5%, then the reaction solution is transported to the condensation kettle 2, cool down to 110 ℃ with cold water, keep warm for 30 minutes at 110 ℃ after adding sulfuric acid, cool down to 95 ℃ with cold water again, the temperature is controlled between 90~100 ℃ in the process of adding formaldehyde, when the stirrer current rises to 10A, add 50 ℃ hot water rapidly, stir for 30 minutes (the addition of caustic soda is relevant with reaction, and the acidity of reaction is regulated); The reacted material is put into the neutralization kettle 3, slowly add an amount of auxiliary agent, concentration is 35% sodium hydroxide and lime water to carry out neutralization reaction, the pH value to the reaction solution is 7~9 and then the reaction solution is transported to the centrifuge 4 for separation, the solid material is calcium sulfate, which is sold outside after drying, and the liquid is a high-concentration naphthalene water-reducing agent product, which is transported to the finished product storage tank 5 for temporary storage.

[0023] It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

Claims

1. A high-concentration naphthalene-based water-reducing agent production device, characterized in that: The invention comprises a sulfonation kettle, a condensation kettle, a neutralization kettle, a centrifuge and a finished product storage tank which are connected in sequence through pipelines, valves and pumps; the discharge port of the sulfonation kettle is connected to the feed port of the condensation kettle, the discharge port of the condensation kettle is connected to the feed port of the neutralization kettle, the discharge port of the neutralization kettle is connected to the feed port of the centrifuge, the discharge port of the centrifuge is provided with a solid material outlet and a liquid material outlet, and the liquid material outlet is connected to the feed port of the finished product storage tank; the kettle body of the neutralization kettle is provided with a circulation pipe which connects the upper part and the lower part of the kettle body, and the lower part of the circulation pipe is provided with a circulation pump.

2. The high-concentration naphthalene-based water-reducing agent production device according to claim 1, characterized in that: The sulfonation kettle is connected to the sulfuric acid tank and the naphthalene tank respectively through pipelines, valves and pumps.

3. The high-concentration naphthalene-based water-reducing agent production device according to claim 1, characterized in that: The condensation kettle is respectively connected to a sulfuric acid tank, a formaldehyde tank, a caustic soda tank, a cold water tank and a hot water tank through pipelines, valves and pumps.

4. The high-concentration naphthalene-based water-reducing agent production device according to claim 1, characterized in that: The neutralization kettle is connected to the caustic soda tank, the lime water tank and the auxiliary agent tank respectively through pipelines, valves and pumps.

5. The high-concentration naphthalene-based water-reducing agent production device according to claim 2 or 3, characterized in that: The sulfuric acid tank is connected to the sulfonation kettle and the condensation kettle respectively through a main pipe connecting two branch pipes.

6. The high-concentration naphthalene-based water-reducing agent production device according to claim 3 or 4, characterized in that: The caustic soda tank is connected to the neutralization tank and the condensation kettle respectively through a main pipe connecting two branch pipes.

7. The high-concentration naphthalene-based water-reducing agent production device according to claim 1, characterized in that: The solid material outlet of the centrifuge is connected to the calcium sulfate storage tank through a pipeline.

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