CN212040401U - Device for preparing sulfanilic acid - Google Patents
Device for preparing sulfanilic acid Download PDFInfo
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- CN212040401U CN212040401U CN201922491236.0U CN201922491236U CN212040401U CN 212040401 U CN212040401 U CN 212040401U CN 201922491236 U CN201922491236 U CN 201922491236U CN 212040401 U CN212040401 U CN 212040401U
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- stirring
- tank body
- stirring blade
- aniline
- concentrated sulfuric
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Abstract
The utility model belongs to the field of preparation sulfanilic acid, and particularly discloses a device for preparing sulfanilic acid, an aniline storage tank is used for storing aniline, a concentrated sulfuric acid tank is used for storing concentrated sulfuric acid, and the aniline can react with the concentrated sulfuric acid to generate sulfanilic acid; the aniline storage tank can enter the mixing tank through a material flow pipeline, the concentrated sulfuric acid storage tank can enter the mixing tank through an acid inlet pipeline, aniline and concentrated sulfuric acid generate sulfanilic acid at the temperature of 130-180 ℃, the temperature of the mixed solution is increased due to the reaction, and the temperature of the inner tank body and the cooling liquid in the mixing tank can be kept at 130-170 ℃, so that the temperature of the mixing tank can be ensured, and the yield and the quality of sulfanilic acid are further ensured. First stirring vane group, second stirring vane group and the third stirring vane group that the stirring rake top-down set up, the setting of three stirring vane groups can be to concentrated sulfuric acid and aniline intensive mixing in the blending tank, can make the temperature of mixed liquid even, misce bene, the reaction is thorough.
Description
Technical Field
The utility model belongs to preparation sulfanilic acid field, in particular to preparation sulfanilic acid's device.
Background
The sulfanilic acid is white to grey white powder, turns into white crystal after absorbing water in the air, has crystal water with one molecule, loses the crystal water when the temperature reaches 100 ℃, starts to decompose and carbonize at 300 ℃, is slightly soluble in cold water, is soluble in boiling water, is insoluble in ethanol, diethyl ether and benzene, has obvious acidity, and can be dissolved in sodium hydroxide solution and sodium carbonate solution. It can be used for preparing azo dyes, etc., and can also be used as pesticide for preventing and controlling wheat rust. The sulfanilic acid is obtained by reacting aniline with sulfuric acid to form salt and then performing transposition. And (3) dripping aniline into concentrated sulfuric acid for reaction, and pouring the reaction mixture into cold water to obtain colorless precipitate of sulfanilic acid. Cooling, filtering and drying to obtain the sulfanilic acid. Wherein, because aniline can produce a large amount of heats with concentrated sulfuric acid reaction in-process, if the temperature is too high, can cause the influence to output, the quality of sulfanilic acid, therefore we propose a device for preparing sulfanilic acid to solve the high technical problem that causes output, quality are low of reaction temperature.
SUMMERY OF THE UTILITY MODEL
The utility model provides a device for preparing sulfanilic acid can make reaction temperature keep 130-.
The technical scheme of the utility model is realized like this:
an apparatus for preparing sulfanilic acid, comprising:
an aniline storage tank, a concentrated sulfuric acid storage tank and a mixing tank;
the concentrated sulfuric acid storage tank is connected with the mixing tank through an acid inlet pipeline, and the aniline storage tank is connected with the mixing tank through a material pipeline;
the mixing tank comprises an outer tank body and an inner tank body arranged in the outer tank body;
the top of the outer tank body is provided with a stirring motor, the output end of the stirring motor is provided with a stirring paddle, and one end of the stirring paddle extends into the inner tank body;
a first stirring blade group, a second stirring blade group and a third stirring blade group are arranged outside the stirring paddle from top to bottom; the acid inlet pipe and the material pipeline extend into the inner tank body;
a cooling liquid is arranged in the area between the outer tank body and the inner wall of the inner tank body;
a cooling liquid outlet is formed in the top of one side of the outer tank body, a cooling liquid inlet is formed in the bottom of the outer tank body, and the cooling liquid inlet and the cooling liquid outlet are connected with a cooler;
the outer tank body all is provided with the discharge gate, two discharge gates intercommunications with the inner tank body bottom.
Furthermore, the first stirring blade group comprises two spiral blades and a connecting rod, the connecting rod is fixedly connected with the stirring paddle, and the two spiral blades are coaxially and spirally arranged around the stirring paddle; the distance between the two helical blades and the stirring paddle is always the same; the two ends of the two helical blades are connected through a connecting rod.
Furthermore, the second stirring blade group comprises three stirring rods from top to bottom, a rectangular stirring blade is arranged on one side face of each stirring rod, the height of the rectangular stirring blade is larger than that of each stirring rod, the rectangular stirring blade is movably connected to the stirring rods through movable shafts, and saw teeth are arranged on the rectangular stirring blade.
Further, the third stirring blade group is an arc-shaped stirring blade arranged at the bottom of the stirring paddle, and vent holes are uniformly formed in the arc-shaped stirring blade.
Furthermore, the lower part of the outer tank body is provided with a support leg.
The utility model provides a preparation sulfanilic acid's device has following advantage:
1) the aniline storage tank is used for storing aniline, the concentrated sulfuric acid tank is used for storing concentrated sulfuric acid, and aniline and concentrated sulfuric acid can react to generate sulfanilic acid; the aniline storage tank can enter the mixing tank through a material flow pipeline, the concentrated sulfuric acid storage tank can enter the mixing tank through an acid inlet pipeline, aniline and concentrated sulfuric acid generate sulfanilic acid at the temperature of 130-180 ℃, the temperature of the mixed solution is increased due to the reaction, and the temperature of the inner tank body and the cooling liquid in the mixing tank can be kept at 130-170 ℃, so that the temperature of the mixing tank can be ensured, and the yield and the quality of sulfanilic acid are further ensured.
2) First stirring vane group, second stirring vane group and the third stirring vane group that the stirring rake top-down set up, the setting of three stirring vane groups can be to concentrated sulfuric acid and aniline intensive mixing in the blending tank, can make the temperature of mixed liquid even, misce bene, the reaction is thorough.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an apparatus for preparing sulfanilic acid according to the present invention.
In the figure:
1. an aniline storage tank; 2. a concentrated sulfuric acid storage tank; 3. a mixing tank; 4. an outer tank body; 5. an inner tank body; 6. a first stirring blade group; 7. a second stirring blade group; 8. a third stirring blade group; 9. a helical blade; 10. a stirring rod; 11. a rectangular stirring blade; 12. an arc-shaped stirring blade; 13. a connecting rod.
Detailed Description
The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.
As shown in fig. 1, the utility model discloses a device for preparing sulfanilic acid, including:
an aniline storage tank 1, a concentrated sulfuric acid storage tank 2 and a mixing tank 3;
the concentrated sulfuric acid storage tank 2 is connected with the mixing tank 3 through an acid inlet pipeline, and the aniline storage tank 1 is connected with the mixing tank 3 through a material pipeline;
the mixing tank 3 comprises an outer tank body 4 and an inner tank body 5 arranged in the outer tank body 4;
the top of the outer tank body 4 is provided with a stirring motor, the output end of the stirring motor is provided with a stirring paddle, and one end of the stirring paddle extends into the inner tank body 5;
a first stirring blade group 6, a second stirring blade group 7 and a third stirring blade group 8 are arranged outside the stirring paddle from top to bottom; the acid inlet pipe and the material pipeline extend into the inner tank body 5;
a cooling liquid is arranged in the area between the inner walls of the outer tank body 4 and the inner tank body 5;
a cooling liquid outlet is formed in the top of one side of the outer tank body 4, a cooling liquid inlet is formed in the bottom of the outer tank body, and the cooling liquid inlet and the cooling liquid outlet are connected with a cooler;
the outer tank body 4 and the inner tank body 5 are both provided with discharge ports, and the two discharge ports are communicated.
The aniline storage tank 1 is used for storing aniline, the concentrated sulfuric acid tank is used for storing concentrated sulfuric acid, and aniline and concentrated sulfuric acid can react to generate sulfanilic acid; the aniline storage tank 1 can enter the mixing tank 3 through a material flow pipeline, the concentrated sulfuric acid storage tank 2 can enter the mixing tank 3 through an acid inlet pipeline, aniline and concentrated sulfuric acid generate sulfanilic acid at the temperature of 130-170 ℃, and the temperature in the mixing tank 3 can be kept at 130-170 ℃ due to the exothermic reaction of the aniline and the concentrated sulfuric acid.
First stirring vane group 6, second stirring vane group 7 and the third stirring vane group 8 that the stirring rake top-down set up, the setting of three stirring vane groups can be to concentrated sulfuric acid and aniline intensive mixing in the blending tank 3, can make the temperature of mixed liquid even, the misce bene, the reaction is thorough.
It should be noted that the aniline storage tank 1 and the concentrated sulfuric acid storage tank 2 may be arranged on the mixing tank 3, and when the aniline storage tank 1 and the concentrated sulfuric acid storage tank 2 are arranged on the mixing tank 3, valves are arranged on both the acid inlet pipeline and the material pipeline; when the aniline storage tank 1 and the concentrated sulfuric acid storage tank 2 are not arranged on the mixing tank 3, pumps are arranged on the acid inlet pipeline and the material pipeline.
In the present embodiment, the first stirring blade group 6 includes two helical blades 9 and a connecting rod 13, the connecting rod 13 is fixedly connected with the stirring paddle, and the two helical blades 9 are coaxially and helically arranged around the stirring paddle; the distance between the two helical blades 9 and the stirring paddle is always the same; both ends of the two helical blades 9 are connected by a connecting rod 13. Above-mentioned, resistance is little when first stirring blade group 6 stirs, can reduce the drive power of stirring rake, can also improve the mixed effect of material simultaneously.
Second stirring vane group 7 top-down includes three puddler 10, and puddler 10 a side is provided with rectangle stirring vane 11, and rectangle stirring vane 11 highly is greater than the height of puddler 10, and rectangle stirring vane 11 passes through loose axle swing joint on puddler 10, is provided with the sawtooth on the rectangle stirring vane 11. The second stirring blade group 7 can also improve the mixing effect of the materials.
The third stirring blade group 8 is an arc-shaped stirring blade 12 arranged at the bottom of the stirring paddle, and vent holes are uniformly formed in the arc-shaped stirring blade 12. The arc-shaped stirring blades 12 can ensure thorough and uniform stirring of materials in the mixing tank 3 and thorough reaction of aniline and concentrated sulfuric acid.
The rectangular agitating blades 11 are also provided with vent holes uniformly.
In the present embodiment, the lower portion of the outer tank 4 is provided with a support leg, which plays a role of supporting and fixing the mixing tank 3.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. An apparatus for preparing sulfanilic acid, comprising:
an aniline storage tank, a concentrated sulfuric acid storage tank and a mixing tank;
the concentrated sulfuric acid storage tank is connected with the mixing tank through an acid inlet pipeline, and the aniline storage tank is connected with the mixing tank through a material pipeline;
the mixing tank comprises an outer tank body and an inner tank body arranged in the outer tank body;
the top of the outer tank body is provided with a stirring motor, the output end of the stirring motor is provided with a stirring paddle, and one end of the stirring paddle extends into the inner tank body;
a first stirring blade group, a second stirring blade group and a third stirring blade group are arranged outside the stirring paddle from top to bottom; the acid inlet pipe and the material pipeline extend into the inner tank body;
a cooling liquid is arranged in the area between the outer tank body and the inner wall of the inner tank body;
a cooling liquid outlet is formed in the top of one side of the outer tank body, a cooling liquid inlet is formed in the bottom of the outer tank body, and the cooling liquid inlet and the cooling liquid outlet are connected with a cooler;
the outer tank body all is provided with the discharge gate, two discharge gates intercommunications with the inner tank body bottom.
2. The apparatus for preparing sulfanilic acid according to claim 1, wherein the first stirring blade set comprises two helical blades and a connecting rod, the connecting rod is fixedly connected with the stirring paddle, and the two helical blades are coaxially and spirally arranged around the stirring paddle; the distance between the two helical blades and the stirring paddle is always the same; the two ends of the two helical blades are connected through a connecting rod.
3. The apparatus for preparing sulfanilic acid according to claim 1, wherein the second stirring blade set comprises three stirring rods from top to bottom, one side of the stirring rod is provided with a rectangular stirring blade, the height of the rectangular stirring blade is greater than that of the stirring rod, the rectangular stirring blade is movably connected to the stirring rod through a movable shaft, and the rectangular stirring blade is provided with saw teeth.
4. The apparatus for preparing sulfanilic acid according to claim 1, wherein the third stirring blade set is an arc-shaped stirring blade provided at the bottom of the stirring paddle, and the arc-shaped stirring blade is uniformly provided with the vent holes.
5. The apparatus for preparing sulfanilic acid according to claim 1, wherein the lower part of the outer tank is provided with a leg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922491236.0U CN212040401U (en) | 2019-12-31 | 2019-12-31 | Device for preparing sulfanilic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922491236.0U CN212040401U (en) | 2019-12-31 | 2019-12-31 | Device for preparing sulfanilic acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212040401U true CN212040401U (en) | 2020-12-01 |
Family
ID=73535530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922491236.0U Active CN212040401U (en) | 2019-12-31 | 2019-12-31 | Device for preparing sulfanilic acid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212040401U (en) |
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2019
- 2019-12-31 CN CN201922491236.0U patent/CN212040401U/en active Active
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