Sulfuric acid dripping device for sulfonation reaction

Abstract

The utility model discloses a sulfuric acid dripping device for sulfonation reaction, which comprises a chemical tank, a chemical outlet pipeline, a chemical feeding pump, a chemical delivery pipeline and a reaction tank, the chemical tank is provided with the chemical feeding pump through the chemical outlet pipeline, and the output end of the chemical feeding pump is connected with the reaction tank through the chemical delivery pipeline to drip chemicals into the reaction tank. The output end of the dosing pump is communicated with the medicine feeding pipeline through a three-way pipe, three ports of the medicine feeding pipeline are respectively communicated with the dosing pump, the medicine feeding pipeline and the air blowing pipeline, the other end of the air blowing pipeline is communicated with the air pipe through the air pump, and one end, far away from the air pump, of the air pipe is communicated with the reaction tank. According to the sulfuric acid dropwise adding device for sulfonation reaction, airflow circulates through the air blowing pipeline and the air pipe, the wall hanging phenomenon of chemicals is prevented, the chemicals sent out by doing work of the chemical adding pump every time can be sent into the reaction tank through the airflow to react in time, and the chemical adding uniformity is kept in cooperation with the characteristic that the one-way valve blocks the chemicals.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of dropwise addition reaction equipment technical field, specifically a sulfuric acid dropwise addition device for sulfonation reaction. BACKGROUND

[0002] In the field of chemical synthesis, it is often necessary to add liquid reagents to the reaction kettle, which can be reaction materials or catalysts, etc. The current dropwise addition method is to extract the reagent through a peristaltic pump or a piston pump, and then add it to the reaction kettle through a dropwise addition pipe.

[0003] The diameter of the dropwise addition pipeline is fixed in the current dropwise addition method. When controlling the dropwise addition amount, the reagent flow in the pipe becomes smaller, which may cause wall hanging due to the surface tension of the reagent. Until the reagent gathers to break the tension and falls, precise control cannot be achieved. In order to improve the dropwise addition precision of the equipment and overcome the wall hanging problem caused by the tension of the reagent. SUMMARY

[0004] The utility model aims to provide a sulfuric acid dropwise addition device for sulfonation reaction to solve the problems raised in the background art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A sulfuric acid dropwise addition device for sulfonation reaction includes a reagent tank, a reagent outlet pipeline, a reagent feeding pump, a reagent feeding pipeline, and a reaction kettle. The reagent tank is installed with the reagent feeding pump through the reagent outlet pipeline. The output end of the reagent feeding pump is connected to the reaction kettle through the reagent feeding pipeline to dropwise add reagent to the reaction kettle. The output end of the reagent feeding pump is communicated with the reagent feeding pipeline through a three-way pipe. The three ports of the reagent feeding pipeline are communicated with the reagent feeding pump, the reagent feeding pipeline, and the air blowing pipeline. The other end of the air blowing pipeline is communicated with the air pipe through the air pump. The end of the air pipe away from the air pump is communicated with the reaction kettle.

[0007] As a further scheme of the utility model: a one-way valve is arranged inside the three-way pipe. The dropwise addition agent output by the three-way pipe flows into the one-way valve through the one-way valve.

[0008] As a further scheme of the utility model: a distribution pipe extending into the interior of the reaction kettle is installed at the output end of the reagent feeding pipeline.

[0009] As a further scheme of the utility model: the distribution pipe includes a contraction pipe, a throat pipe, and a distribution component. The distribution component is a wide-mouth pipe. The contraction pipe is communicated with the throat pipe and the distribution component. The top diameter of the contraction pipe is larger than the bottom diameter. The top diameter of the distribution component is smaller than the bottom diameter. The airflow is extruded by the contraction pipe and released and sprayed from the distribution component during its internal flow.

[0010] As a further scheme of the utility model: the distribution pipe includes a contraction pipe, a throat pipe and a distribution component, the contraction pipe is communicated through the throat pipe and the distribution component, the top diameter of the contraction pipe is larger than the bottom diameter, the distribution component is a high-pressure nozzle, and airflow is extruded from the distribution component during the internal flow process.

[0011] As a further scheme of the utility model: the medicine delivery pipeline is communicated with the medicine delivery pipeline through the reflux pipe, and the medicine delivery pipeline and the reflux pipe are communicated through the three-way valve.

[0012] As a further scheme of the utility model: the trachea is provided with a pressure balance pipeline communicated with the medicament tank.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] The sulfuric acid dropping device for sulfonation reaction circulates airflow through the air blowing pipeline and the air pipe, prevents the medicament from appearing the wall-hanging phenomenon, and each time the medicament pumped by the dosing pump is sent into the reaction tank through the airflow and reacts in time. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic view of a sulfuric acid dropping device for sulfonation reaction;

[0016] Figure 2 It is a structural schematic view of a three-way pipe in a sulfuric acid dropping device for sulfonation reaction;

[0017] Figure 3 It is a distribution pipe structural schematic view of embodiment one in a sulfuric acid dropping device for sulfonation reaction;

[0018] Figure 4 It is a distribution pipe structural schematic view of embodiment two in a sulfuric acid dropping device for sulfonation reaction.

[0019] In the drawing: 1, medicament tank; 2, medicine outlet pipeline; 3, dosing pump; 4, reaction tank; 5, air pipe; 6, air pump; 7, pressure balance pipeline; 8, reflux pipe; 9, distribution pipe; 901, contraction pipe; 902, throat pipe; 903, distribution component; 10, three-way valve; 11, check valve; 12, three-way pipe; 13, air blowing pipeline; 14, medicine delivery pipeline. DETAILED DESCRIPTION

[0020] Embodiment one

[0021] Please refer to Figures 1 to 3The utility model discloses a kind of sulphation reaction sulfuric acid dropwise adding devices, including medicament tank 1, medicine outlet pipeline 2, dosing pump 3, medicine sending pipeline 14 and reaction tank 4, medicament tank 1 is installed dosing pump 3 by medicine outlet pipeline 2, the output of dosing pump 3 is connected reaction tank 4 by medicine sending pipeline 14 to reaction tank 4 dropwise adding medicament, the output of dosing pump 3 is communicated with medicine sending pipeline 14 by three-way pipe 12, three ports of medicine sending pipeline 14 are communicated with dosing pump 3, medicine sending pipeline 14 and air blowing pipeline 13, the other end of air blowing pipeline 13 is communicated with air pipe 5 by air pump 6, the end of air pipe 5 far from air pump 6 is communicated with reaction tank 4, medicament tank 1 is transported medicament to three-way pipe 12 under the action of dosing pump 3, to avoid medicament in medicine sending pipeline 14 wall-hanging, by air pump 6, gas in reaction tank 4 is sent into three-way pipe 12 by air blowing pipeline 13, the high-speed circulation of airflow, medicament can be carried to the inside of reaction tank 4 in the mode of air sending, medicament falls into reaction material in reaction tank 4 under the action of weight and reacts, airflow circulates by air blowing pipeline 13 and air pipe 5, prevent medicament from wall-hanging, medicament sent by dosing pump 3 every time will be sent into reaction tank 4 by airflow and react in time.

[0022] In a preferred embodiment, the inside of three-way pipe 12 is provided with one-way valve 11, and the dropwise adding agent output by three-way pipe 12 flows into one-way valve 11 through one-way valve 11. The medicament cannot be compressed, and the pipeline between dosing pump 3 and three-way pipe 12 has no airflow flow. The medicament is easy to converge, and the structure of one-way valve 11 is added for optimization. One-way valve 11 has the function of blocking the medicament. Every time dosing pump 3 works, an equal amount of medicament is squeezed through one-way valve 11. The airflow directly contacts one-way valve 11 and carries it into the airflow, thereby maintaining the uniformity of dosing.

[0023] In a preferred embodiment, the output end of medicine sending pipeline 14 is provided with distribution pipe 9 extending into the inside of reaction tank 4.

[0024] In a preferred embodiment, distribution pipe 9 includes contraction pipe 901, throat pipe 902 and distribution component 903. Distribution component 903 is a wide-mouth pipe. Contraction pipe 901 is communicated with throat pipe 902 and distribution component 903. The top diameter of contraction pipe 901 is greater than the bottom diameter. The top diameter of distribution component 903 is less than the bottom diameter. The airflow is squeezed to release and spray from distribution component 903 during the flow process in the inside of contraction pipe 901. After being compressed by contraction pipe 901, the airflow is released by distribution component 903. During the process of passing through throat pipe 902, the airflow collides with the sidewall of throat pipe 902 to form smaller water droplets. After the airflow is released by distribution component 903, the distribution area is larger.

[0025] In a preferred embodiment, the medicine delivery pipeline 14 is connected to the medicine delivery pipeline 14 and the reflux pipeline 8 through the three-way valve 10, which switches to send the medicine into the reaction tank 4 or the reflux pipeline 8, and when the emergency stop occurs, the three-way valve 10 switches to send the medicine into the reflux pipeline 8, avoiding the medicine remaining in the pipeline.

[0026] In a preferred embodiment, the gas pipeline 5 is provided with the pressure balance pipeline 7 connected to the medicine tank 1, which balances the gas pressure in the medicine tank 1 and the reaction tank 4, and internally circulates the gas with pungent or toxic smell, preventing the gas from leaking out.

[0027] Embodiment two

[0028] Please refer to Figure 4 In the embodiment of the utility model, the distribution pipeline 9 includes the contraction pipeline 901, the throat pipeline 902 and the distribution component 903, the contraction pipeline 901 is communicated through the throat pipeline 902 and the distribution component 903, the top diameter of the contraction pipeline 901 is greater than the bottom diameter, the distribution component 903 is the high-pressure nozzle, and the airflow is extruded from the distribution component 903 and sprayed out in the internal flow process, the high-pressure nozzle has better and more uniform distribution characteristics, and the medicine is distributed to the reaction raw materials.

[0029] It should be noted that the above embodiments all belong to the same utility model concept, and the description of each embodiment has different emphases, and the description not described in detail in individual embodiments can be referred to the description in other embodiments.

[0030] The above-described embodiments only express the implementation of the utility model, and the description is more specific and detailed, but it should not be understood as the limitation of the utility model patent range. It should be pointed out that for ordinary skilled in the art, without departing from the utility model concept, a number of variations and improvements can be made, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A sulfuric acid dropping device for sulfonation reaction, comprising a reagent tank (1), a reagent outlet pipeline (2), a reagent feeding pump (3), a reagent feeding pipeline (14) and a reaction tank (4), the reagent tank (1) is installed with the reagent feeding pump (3) through the reagent outlet pipeline (2), and the output end of the reagent feeding pump (3) is connected with the reaction tank (4) through the reagent feeding pipeline (14) to drop reagent into the reaction tank (4), characterized in that, The output end of the dosing pump (3) is communicated with the medicine delivery pipeline (14) through a three-way pipe (12), three ports of the medicine delivery pipeline (14) are communicated with the dosing pump (3), the medicine delivery pipeline (14) and the air blowing pipeline (13) respectively, the other end of the air blowing pipeline (13) is communicated with the air pipe (5) through the air pump (6), and the end of the air pipe (5) far away from the air pump (6) is communicated with the reaction tank (4).

2. The apparatus according to claim 1, wherein The inside of the three-way pipe (12) is provided with a one-way valve (11), and the dropwise additive output by the three-way pipe (12) flows into the one-way valve (11) through the one-way valve (11).

3. The apparatus according to claim 1, wherein The output end of the medicine delivery pipeline (14) is provided with a distribution pipe (9) extending into the inside of the reaction tank (4).

4. The apparatus according to claim 3, wherein The distribution pipe (9) comprises a contraction pipe (901), a throat pipe (902) and a distribution component (903), the distribution component (903) is a wide-mouth pipe, the contraction pipe (901) is communicated with the throat pipe (902) and the distribution component (903), the top diameter of the contraction pipe (901) is larger than the bottom diameter, the top diameter of the distribution component (903) is smaller than the bottom diameter, and the airflow is extruded through the contraction pipe (901) and released from the distribution component (903) during the flow in the inside.

5. The apparatus according to claim 4, wherein The distribution pipe (9) comprises a contraction pipe (901), a throat pipe (902) and a distribution component (903), the contraction pipe (901) is communicated with the throat pipe (902) and the distribution component (903), the top diameter of the contraction pipe (901) is larger than the bottom diameter, the distribution component (903) is a high-pressure nozzle, and the airflow is extruded through the contraction pipe (901) and released from the distribution component (903) during the flow in the inside.

6. The apparatus for dropping sulfuric acid for sulfonation reaction according to claim 1, wherein The medicine delivery pipeline (14) is communicated with the medicine delivery pipeline (14) through the backflow pipe (8), and the medicine delivery pipeline (14) and the backflow pipe (8) are communicated through the three-way valve (10).

7. The apparatus according to claim 1, wherein The air pipe (5) is provided with a pressure balance pipeline (7) communicated with the medicine tank (1).

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