CN218167018U - Device for producing sodium naphthalenesulfonate through low-temperature neutralization - Google Patents
Device for producing sodium naphthalenesulfonate through low-temperature neutralization Download PDFInfo
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- CN218167018U CN218167018U CN202222306185.1U CN202222306185U CN218167018U CN 218167018 U CN218167018 U CN 218167018U CN 202222306185 U CN202222306185 U CN 202222306185U CN 218167018 U CN218167018 U CN 218167018U
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Abstract
The utility model discloses a device for producing sodium naphthalenesulfonate through low-temperature neutralization, belonging to the technical field of sodium naphthalenesulfonate production; comprises a neutralization kettle, a sulfonated liquid metering tank and a sodium sulfite metering tank; the neutralization kettle is provided with a sulfonated liquid inlet and a sodium sulfite inlet, the sulfonated liquid metering tank is connected with the sulfonated liquid inlet through a first liquid inlet pipe, and the sodium sulfite metering tank is connected with the sodium sulfite inlet through a second liquid inlet pipe; the kettle body of the neutralization kettle is provided with a jacket, and the bottom of the jacket is connected withA chilled water inlet pipe is connected, and the top of the jacket is connected with a chilled water outlet pipe; the neutralization kettle is connected with an acid-base concentration detection device and a temperature sensor; the first liquid inlet pipe is provided with an electromagnetic valve, and the temperature sensor is connected with the electromagnetic valve through a controller; the device can effectively prevent a large amount of SO 2 Entrainment and SO during gas release 2 Gas evolution.
Description
Technical Field
The utility model belongs to the technical field of sodium naphthalenesulfonate production, in particular to a device for producing sodium naphthalenesulfonate through low-temperature neutralization.
Background
The prior neutralization process for producing 2-naphthol sodium salt comprises the steps of adding naphthalenesulfonic acid into a neutralization kettle, and then adding preheated Na 2 SO 3 Solution, na 2 SO 3 Controlling the temperature of the solution at 95-100 ℃, and adding Na 2 SO 3 Controlling the feeding speed to keep the negative pressure in the neutralization kettle within 40-50 minutes, and sending sulfur dioxide gas generated by neutralization to an acidification kettle by utilizing the negative pressure. Because the temperature in the neutralization kettle is too high, sulfur dioxide gas can often burst out of the neutralization kettle, and the sulfur dioxide gas also has the phenomenon of material entrainment, so that the yield of the sodium naphthalene sulfonate is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model overcomes prior art's is not enough, provides a device of low temperature neutralization production sodium naphthalenesulfonate to solve the problem that in-process sulfur dioxide gas emits and sulfur dioxide gas area material.
In order to achieve the purpose, the utility model is realized by the following technical scheme.
A device for producing sodium naphthalenesulfonate by low-temperature neutralization comprises a neutralization kettle, a sulfonated liquid metering tank and a sodium sulfite metering tank; the neutralization kettle is provided with a sulfonated liquid inlet and a sodium sulfite inlet, the sulfonated liquid metering tank is connected with the sulfonated liquid inlet through a first liquid inlet pipe, and the sodium sulfite metering tank is connected with the sodium sulfite inlet through a second liquid inlet pipe; the kettle body of the neutralization kettle is provided with a jacket, the bottom of the jacket is connected with a chilled water inlet pipe, and the top of the jacket is connected with a chilled water outlet pipe; the neutralization kettle is connected with an acid-base concentration detection device and a temperature sensor; the first liquid inlet pipe is provided with an electromagnetic valve, and the temperature sensor is connected with the electromagnetic valve through a controller.
Furthermore, the second liquid inlet pipe is provided with a control valve.
Furthermore, the sodium sulfite metering tank is connected with a temperature detection device.
Furthermore, a stirring device is arranged in the neutralization kettle.
Further, the acid-base concentration detection device is connected with the electromagnetic valve through a controller.
The utility model discloses produced beneficial effect for prior art does:
the utility model is provided with a sulfonated liquid metering tank and a sodium sulfite metering tank which are respectively connected with a neutralization kettle through a liquid inlet pipe, and the liquid adding of the sulfonated liquid and the sodium sulfite is accurately controlled; the normal-temperature sodium sulfite is added into the neutralization kettle through the second liquid inlet pipe, the sodium sulfite is cooled through chilled water in the jacket, when the temperature sensor detects that the temperature of the sodium sulfite reaches a set value, the controller controls the solenoid valve to open the sulfonation liquid metering tank to dropwise add the naphthalenesulfonic acid into the neutralization kettle, and when the set pH range is reached, the dropwise addition of the naphthalenesulfonic acid is stopped.
This device utilizes the mode of low temperature neutralization, with naphthalenesulfonic acid dropwise add to low temperature sodium sulfite in, compare with the device of high temperature sodium sulfite dropwise add to naphthalenesulfonic acid among the prior art, this device can protect 1-naphthalenesulfonic acid furthest not destroyed, and the terminal point of adding naphthalenesulfonic acid is pH at the scope of 1.5 ~ 2, and sodium bicarbonate content is less than or equal to 1%. SO at low temperature 2 Slow release speed, and effective prevention of large amount of SO 2 Entrainment and SO on gas release 2 Gas evolution.
Drawings
Fig. 1 is a schematic structural diagram of a device for producing sodium naphthalenesulfonate through low-temperature neutralization according to the present invention.
In the figure, 1-a neutralization kettle, 2-a sulfonated liquid metering tank, 3-a sodium sulfite metering tank, 4-a first liquid inlet pipe, 5-a second liquid inlet pipe, 6-a jacket, 7-a chilled water inlet pipe, 8-a chilled water outlet pipe, 9-an acid-alkali concentration detection device, 10-a temperature sensor, 11-an electromagnetic valve, 12-a controller, 13-a control valve, 14-a temperature detection device and 15-a stirring device.
Detailed Description
In order to make the technical problem, technical scheme and beneficial effect that the utility model will solve clearer and more obvious, combine embodiment and attached drawing, it is right to go on further detailed description the utility model discloses. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention. The technical solution of the present invention is described in detail below with reference to the embodiments and the drawings, but the scope of protection is not limited thereto.
As shown in fig. 1, the embodiment provides a device for producing sodium naphthalenesulfonate through low-temperature neutralization, which comprises a neutralization kettle 1, a sulfonation liquid metering tank 2 and a sodium sulfite metering tank 3; the kettle body of the neutralization kettle 1 is provided with a jacket 6, the bottom of the jacket 6 is connected with a chilled water inlet pipe 7, and the top of the jacket 6 is connected with a chilled water outlet pipe 8. Materials of the neutralization kettle 1: inner parts are enameled, and a jacket Q345R is arranged; the diameter is 2400/2600mm, and the height is 4000mm. The neutralization kettle jacket is used for freezing water, and the inlet and outlet pipe diameter is DN80.
Material quality of the sulfonated liquid metering tank 2: inner-part enamel, jacket Q345R; the diameter is phi 1600/1750mm, and the height is 2500mm.
The material S30408 of the sodium sulfite metering tank 3; φ 2400 × 2500mm.
Wherein, a stirring device 15 is arranged in the neutralization kettle 1. Two groups of stirring paddles are arranged on the upper and lower parts of the stirring shaft of the stirring device 15 to improve the stirring uniformity. The neutralization kettle 1 is provided with a sulfonated liquid inlet and a sodium sulfite inlet, the sulfonated liquid metering tank 2 is connected with the sulfonated liquid inlet through a first liquid inlet pipe 4, and the sodium sulfite metering tank 3 is connected with the sodium sulfite inlet through a second liquid inlet pipe 5. The second inlet pipe 5 is provided with a control valve 13.
The neutralization kettle 1 is connected with an acid-base concentration detection device 9 and a temperature sensor 10; the first liquid inlet pipe 4 is provided with an electromagnetic valve 11, and the temperature sensor 10 is connected with the electromagnetic valve 11 through a controller 12. The acid-base concentration detection device 9 is connected with the electromagnetic valve 11 through the controller 12.
The sodium sulfite measuring tank 3 is connected to a temperature detecting device 14.
The temperature sensor 10 connected with the neutralization kettle 1 is the prior art, and the temperature sensor 10 is used for controlling the electromagnetic valve 11 through the controller 12.
The specific working process is as follows: firstly adding 10% of sodium sulfite at normal temperature into the neutralization kettle 1 through a second liquid inlet pipe, cooling the sodium sulfite through chilled water in a jacket 6, cooling a sodium sulfite solution to 20 ℃, controlling an electromagnetic valve 11 to open a first liquid inlet pipe 4 connected with a sulfonation liquid metering tank 2 through a controller 12 after a temperature sensor 10 detects that the temperature of the sodium sulfite reaches 20 ℃, and dropwise adding naphthalene sulfonic acid into the neutralization kettle 1, wherein the end point of adding the naphthalene sulfonic acid is the pH range of 1.5-2; when the pH value reaches the set pH range, the acid-base concentration detection device 9 closes the electromagnetic valve 11 through the controller 12 and stops dripping the naphthalenesulfonic acid. The content of sodium hydrogen is less than or equal to 1 percent.
This device utilizes the mode of low temperature neutralization, with naphthalenesulfonic acid dropwise add to microthermal sodium sulfite in, compare with the device of dropwise add high temperature sodium sulfite to naphthalenesulfonic acid among the prior art, this device can protect 1-naphthalenesulfonic acid furthest not destroyed, SO under the low temperature 2 Slow release speed, and effective prevention of large amount of SO 2 Entrainment and SO on gas release 2 Gas evolution.
The above description is for further details of the present invention with reference to specific preferred embodiments, and it should not be understood that the embodiments of the present invention are limited thereto, and it will be apparent to those skilled in the art that the present invention can be implemented in a plurality of simple deductions or substitutions without departing from the scope of the present invention, and all such alterations and substitutions should be considered as belonging to the present invention, which is defined by the appended claims.
Claims (5)
1. The device for producing sodium naphthalenesulfonate through low-temperature neutralization is characterized by comprising a neutralization kettle (1), a sulfonated liquid metering tank (2) and a sodium sulfite metering tank (3); the neutralization kettle (1) is provided with a sulfonated liquid inlet and a sodium sulfite inlet, the sulfonated liquid metering tank (2) is connected with the sulfonated liquid inlet through a first liquid inlet pipe (4), and the sodium sulfite metering tank (3) is connected with the sodium sulfite inlet through a second liquid inlet pipe (5); the kettle body of the neutralization kettle (1) is provided with a jacket (6), the bottom of the jacket (6) is connected with a chilled water inlet pipe (7), and the top of the jacket (6) is connected with a chilled water outlet pipe (8); the neutralization kettle (1) is connected with an acid-base concentration detection device (9) and a temperature sensor (10); the first liquid inlet pipe (4) is provided with an electromagnetic valve (11), and the temperature sensor (10) is connected with the electromagnetic valve (11) through a controller (12).
2. The apparatus for producing sodium naphthalenesulfonate through low-temperature neutralization according to claim 1, wherein the second liquid inlet pipe (5) is provided with a control valve (13).
3. The device for producing sodium naphthalenesulfonate through low-temperature neutralization according to claim 1, characterized in that the sodium sulfite metering tank (3) is connected with a temperature detection device (14).
4. The device for producing sodium naphthalenesulfonate through low-temperature neutralization according to claim 1, characterized in that a stirring device (15) is arranged in the neutralization kettle (1).
5. The device for producing sodium naphthalenesulfonate through low-temperature neutralization according to claim 1, wherein the acid-base concentration detection device (9) is connected with the electromagnetic valve (11) through the controller (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222306185.1U CN218167018U (en) | 2022-08-31 | 2022-08-31 | Device for producing sodium naphthalenesulfonate through low-temperature neutralization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222306185.1U CN218167018U (en) | 2022-08-31 | 2022-08-31 | Device for producing sodium naphthalenesulfonate through low-temperature neutralization |
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| CN218167018U true CN218167018U (en) | 2022-12-30 |
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| CN202222306185.1U Active CN218167018U (en) | 2022-08-31 | 2022-08-31 | Device for producing sodium naphthalenesulfonate through low-temperature neutralization |
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- 2022-08-31 CN CN202222306185.1U patent/CN218167018U/en active Active
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