CN215463348U - Dissolving kettle for preparing sulfamic acid - Google Patents
Dissolving kettle for preparing sulfamic acid Download PDFInfo
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- CN215463348U CN215463348U CN202121488567.XU CN202121488567U CN215463348U CN 215463348 U CN215463348 U CN 215463348U CN 202121488567 U CN202121488567 U CN 202121488567U CN 215463348 U CN215463348 U CN 215463348U
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Abstract
The utility model relates to a dissolving kettle for preparing sulfamic acid, belonging to the technical field of reaction equipment. Comprises a kettle body, a four-way pipeline and a liquid return pipeline. A stirring paddle is arranged in the kettle body; a first valve is arranged at the bottom of the kettle body; the first valve is connected with the sight glass; the sight glass is connected with one port of the four-way pipeline; the other three ports of the four-way pipeline are respectively connected with a gas pipeline, a liquid return pipeline and a valve III; the gas pipeline is provided with a gas valve; the liquid return pipeline is provided with a second valve and a liquid return pump; the liquid return pipeline is connected with the top of the kettle body. The utility model solves the problem that the sulfamic acid solid at the bottom part of the kettle body can not be dissolved, and the bottom feed liquid is circularly operated to be pumped back to the upper part of the dissolving kettle for full dissolution, thereby reducing the material loss in the subsequent process and improving the overall yield.
Description
Technical Field
The utility model relates to the technical field of reaction equipment, in particular to a dissolving kettle for preparing sulfamic acid.
Background
Sulfamic acid is an important fine chemical product and is widely applied to various fields of cleaning agents, textile industry, paper industry, petroleum industry, agriculture and the like. The sulfamic acid is prepared by a urea method, and is prepared by reacting urea with fuming sulfuric acid to obtain crude sulfamic acid, crystallizing and separating the crude sulfamic acid, and finally purifying the crude sulfamic acid by a recrystallization method. During purification, the crude amino sulfonic acid is dissolved by water under the condition of heating, and then the solution is subjected to pressure filtration to a crystallization kettle for crystallization. During dissolution, because the density of sulfamic acid is high, the sulfamic acid is easy to precipitate during the dissolution process, so that part of solid cannot be dissolved. Can be lost in the subsequent filter pressing process, and influences the overall yield.
SUMMERY OF THE UTILITY MODEL
Aiming at the problem that part of sulfamic acid solid at the bottom of a dissolving kettle can not be dissolved in the prior art, the utility model provides the dissolving kettle for preparing sulfamic acid, which aims to solve the problem.
A dissolving kettle for preparing sulfamic acid comprises a kettle body, a four-way pipeline and a liquid return pipeline. A stirring paddle is arranged in the kettle body; a first valve is arranged at the bottom of the kettle body; the first valve is connected with the sight glass; the sight glass is connected with one port of the four-way pipeline; the other three ports of the four-way pipeline are respectively connected with a gas pipeline, a liquid return pipeline and a valve III; the gas pipeline is provided with a gas valve; the liquid return pipeline is provided with a second valve and a liquid return pump; the liquid return pipeline is connected with the top of the kettle body.
Further, the liquid return pump is a pneumatic diaphragm pump. The pneumatic diaphragm pump can transmit the feed liquid with solids, and has the advantages of small occupied area, simple structure, easy maintenance, no need of electricity and the like.
Furthermore, a thermometer probe is arranged at the lower part of the kettle body. Therefore, the temperature of the reaction liquid can be measured without being influenced by the liquid level in the kettle.
Furthermore, the stirring paddle is provided with at least two layers of blades. The multi-layer blades can ensure that the material liquid on the upper part of the kettle body can be fully stirred.
Further, the gas pipeline is connected with a nitrogen storage tank.
Furthermore, the first valve, the four-way pipeline, the liquid return pipeline, the second valve and the third valve are lined with tetrafluoro. Because sulfamic acid is strongly acidic after being dissolved in water and has corrosiveness to metal materials, the metal pipelines can be effectively prevented from being corroded by the arranged lining tetrafluoride.
The working principle of the utility model is as follows: and after the crude sulfamic acid in the kettle body is dissolved for a period of time, opening the first valve to enable the feed liquid to flow through a sight glass, and observing the dissolution condition of the feed liquid. And when the dissolution is not complete, the liquid return pump and the valve II are opened, so that the feed liquid at the lower part of the kettle body circulates to the upper part of the kettle body to be fully dissolved. When the feed liquid in the observation sight glass is clear, the first valve is closed, the gas valve is opened, and the residual feed liquid in the pipeline is pumped back into the kettle through the liquid return pipeline by using nitrogen. And after the back-beating is finished, closing the gas valve, the valve II and the liquid return pump, and opening the valve III and the valve II to transfer materials.
The utility model has the beneficial effects that:
the utility model solves the problem that the sulfamic acid solid at the bottom part of the kettle body can not be dissolved, and the bottom feed liquid is circularly operated to be pumped back to the upper part of the dissolving kettle for full dissolution, thereby reducing the material loss in the subsequent process and improving the overall yield.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
Fig. 1 is a schematic structural view of the present invention.
In the figure, 1-kettle body, 2-stirring paddle, 3-valve I, 4-sight glass, 5-four-way pipeline, 6-gas pipeline, 7-gas valve, 8-liquid return pipeline, 9-valve II, 10-liquid return pump, 11-thermometer probe, and 12-valve III.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not a whole embodiment. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A dissolving kettle for preparing sulfamic acid comprises a kettle body 1, a four-way pipeline 5 and a liquid return pipeline 8. A stirring paddle 2 is arranged in the kettle body 1; a first valve 3 is arranged at the bottom of the kettle body 1; the first valve 3 is connected with the sight glass 4; the sight glass 4 is connected with one port of the four-way pipeline 5; the other three ports of the four-way pipeline 5 are respectively connected with a gas pipeline 6, a liquid return pipeline 8 and a valve III 12; the gas pipeline 6 is provided with a gas valve 7; the liquid return pipeline 8 is provided with a second valve 9 and a liquid return pump 10; the liquid return pipeline 8 is connected with the top of the kettle body 1.
Example 2
A dissolving kettle for preparing sulfamic acid comprises a kettle body 1, a four-way pipeline 5 and a liquid return pipeline 8. A stirring paddle 2 is arranged in the kettle body 1; the stirring paddle 2 is provided with two layers of blades; a first valve 3 is arranged at the bottom of the kettle body 1; the first valve 3 is connected with the sight glass 4; the sight glass 4 is connected with one port of the four-way pipeline 5; the other three ports of the four-way pipeline 5 are respectively connected with a gas pipeline 6, a liquid return pipeline 8 and a valve III 12; the gas pipeline 6 is connected with a nitrogen storage tank; the gas pipeline 6 is provided with a gas valve 7; the liquid return pipeline 8 is provided with a second valve 9 and a liquid return pump 10; the liquid return pump 10 is a pneumatic diaphragm pump; the liquid return pipeline 8 is connected with the top of the kettle body 1; a thermometer probe 11 is arranged at the lower part of the kettle body 1; the first valve 3, the four-way pipeline 5, the liquid return pipeline 8, the second valve 9 and the third valve 12 are lined with tetrafluoro.
Although the present invention has been described in detail by referring to the drawings in connection with the preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and these modifications or substitutions are within the scope of the present invention/any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. A dissolving kettle for preparing sulfamic acid is characterized by comprising a kettle body, a four-way pipeline and a liquid return pipeline; a stirring paddle is arranged in the kettle body; a first valve is arranged at the bottom of the kettle body; the first valve is connected with the sight glass; the sight glass is connected with one port of the four-way pipeline; the other three ports of the four-way pipeline are respectively connected with a gas pipeline, a liquid return pipeline and a valve III; the gas pipeline is provided with a gas valve; the liquid return pipeline is provided with a second valve and a liquid return pump; the liquid return pipeline is connected with the top of the kettle body.
2. The dissolution tank of claim 1, wherein the liquid return pump is a pneumatic diaphragm pump.
3. The dissolution kettle according to claim 1, wherein a thermometer probe is provided at a lower portion of the kettle body.
4. The dissolution tank of claim 1, wherein the paddle is provided with at least two layers of blades.
5. The dissolution tank of claim 1, wherein the gas line is connected to a nitrogen storage tank.
6. The dissolution kettle according to claim 1, wherein the first valve, the four-way pipe, the liquid return pipe, the second valve and the third valve are lined with tetrafluoro.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121488567.XU CN215463348U (en) | 2021-06-30 | 2021-06-30 | Dissolving kettle for preparing sulfamic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121488567.XU CN215463348U (en) | 2021-06-30 | 2021-06-30 | Dissolving kettle for preparing sulfamic acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215463348U true CN215463348U (en) | 2022-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121488567.XU Active CN215463348U (en) | 2021-06-30 | 2021-06-30 | Dissolving kettle for preparing sulfamic acid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215463348U (en) |
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2021
- 2021-06-30 CN CN202121488567.XU patent/CN215463348U/en active Active
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