Material melting device for indigo production
By using jacket preheating technology in the chemical processing unit, aniline acetonitrile reaches its melting point before chemical processing, solving the problem of low chemical processing efficiency and achieving rapid dissolution and efficient chemical processing.
Patent Information
- Application Number
- CN202520286233.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-21
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2035-02-21
AI Technical Summary
Existing chemical processing devices are inefficient and have poor dissolution effects in the chemical processing of aniline acetonitrile, and cannot reach the melting point before entering the water, resulting in a long chemical processing time.
A jacket is fitted around the outside of the material tank, and a feeding pipe is connected to the bottom of the hopper. The feeding pipe has a discharge port in its branch pipe. The aniline acetonitrile is preheated to its melting point by steam in the jacket, and then dissolved in water under the action of a stirrer.
Preheating ensures that aniline acetonitrile reaches its melting point before being added to water, thus improving the dissolution rate and material processing efficiency, and enhancing the dissolution effect.
Smart Images
Figure CN223669085U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to a material dissolving device for indigo production. BACKGROUND
[0002] The production process of indigo mainly includes two steps, i.e. production of intermediate product aniline-based potassium (sodium) acetate and production of product indigo. In the production of the aniline-based potassium (sodium) acetate, raw material aniline-based acetonitrile is dissolved in a material dissolving tank and then injected into a hydrolysis and concentration kettle.
[0003] Aniline-based acetonitrile is difficult to dissolve in water. The existing material dissolving device is to first inject bottom water into the material dissolving tank and then inject aniline-based acetonitrile into the material dissolving tank. Steam is used to heat the material dissolving tank so that the aniline-based acetonitrile reaches the melting point, and the aniline-based acetonitrile is completely dissolved in water through stirring by a stirrer.
[0004] The existing material dissolving tank is to heat the aniline-based acetonitrile in water after the aniline-based acetonitrile is injected into water, and the aniline-based acetonitrile cannot reach the melting point before being injected into water, which leads to a long and low-efficiency material dissolving process of the aniline-based acetonitrile and affects the dissolving effect. CONTENT
[0005] The application provides a material dissolving device for indigo production to solve the problems of a long and low-efficiency material dissolving process of aniline-based acetonitrile and poor dissolving effect.
[0006] The application provides a material dissolving device for indigo production, which comprises a material dissolving tank and a hopper, a jacket is arranged outside the material dissolving tank, a discharging pipe which is in communication with the material dissolving tank is fixed to the bottom of the hopper, a stirrer is arranged in the material dissolving tank, a plurality of branch pipes are communicated with the bottom of the discharging pipe, a plurality of downward discharging ports are arranged at the lower ends of the branch pipes, the branch pipes are arranged in the jacket, the discharging ports penetrate through the top wall of the material dissolving tank and extend into the material dissolving tank, water injection pipes and discharging pipes are arranged at the upper and lower ends of the material dissolving tank respectively, and air inlet pipes and air outlet pipes are communicated with the two ends of the jacket.
[0007] Optionally, an upwardly-extending pipe sleeve is formed in the top surface of the jacket, the pipe sleeve wraps the discharging pipe in a chamber which is in communication with the jacket, and the air outlet pipe is communicated with the upper end of the pipe sleeve.
[0008] Optionally, a discharger is arranged between the lower end of the hopper and the discharging pipe.
[0009] Optionally, a pump body is arranged on the top of the material dissolving tank, a circulating pipe of the pump body penetrates through the jacket and extends into the lower end of the material dissolving tank, and a backflow pipe of the pump body is communicated with the upper end of the discharging pipe.
[0010] The application provides a material melting device for indigo production, and aniline-based ethanenitrile in a hopper can enter a branch pipe through a discharging pipe, and is preheated in the branch pipe through steam in a jacket. The preheating can make the aniline-based ethanenitrile reach a melting point before entering water, and then the preheated molten aniline-based ethanenitrile is discharged into water from a discharge port. The stirring of the preheated molten aniline-based ethanenitrile in a stirrer can be dissolved in water faster, and the dissolution effect and the material melting efficiency of the aniline-based ethanenitrile are improved. BRIEF DESCRIPTION OF DRAWINGS
[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.
[0012] Figure 1 The front view of the material melting device for indigo production provided by an embodiment of the present application;
[0013] Figure 2 The material melting device for indigo production provided by an embodiment of the present application Figure 1 The sectional view;
[0014] Figure 3 The material melting device for indigo production provided by an embodiment of the present application Figure 1 The sectional view of the left view;
[0015] Figure 4 The material melting device for indigo production provided by an embodiment of the present application Figure 1 The sectional view of the top view.
[0016] Explanation of reference signs:
[0017] Material melting tank 1, jacket 2, hopper 3, stirrer 4, discharging pipe 5, branch pipe 6, discharge port 7, water injection pipe 8, discharge pipe 9, air inlet pipe 10, exhaust pipe 11, unloader 12, pipe sleeve 13, pump body 14, circulating pipe 15, backflow pipe 16. DETAILED DESCRIPTION
[0018] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are some embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor also belong to the protection scope of the present application.
[0019] As Figures 1-4As shown, an embodiment of the present application provides a material mixing device for indigo production, which comprises a material mixing box 1 and a hopper 3, a jacket 2 is arranged outside the material mixing box 1, a discharging pipe 5 is fixed to the bottom of the hopper 3 and communicates with the material mixing box 1, a stirrer 4 is installed in the material mixing box 1, a plurality of branch pipes 6 are communicated with the bottom of the discharging pipe 5, a plurality of downward discharge ports 7 are arranged at the lower end of the branch pipes 6, the branch pipes 6 are arranged in the jacket 2, the discharge ports 7 extend into the material mixing box 1 through the top wall of the material mixing box 1, a water injection pipe 8 and a discharging pipe 9 are arranged at the upper and lower ends of the material mixing box 1 respectively, and an air inlet pipe 10 and an air outlet pipe 11 are communicated with the two ends of the jacket 2.
[0020] In use, first, the bottom water is injected into the material mixing box 1 through the water injection pipe 8, and then the steam is injected into the jacket 2 through the air inlet pipe 10. After the bottom water in the material mixing box 1 is heated to 50℃ by the steam in the jacket 2, the aniline acetonitrile in the hopper 3 is injected into the branch pipes 6 through the discharging pipe 5. The aniline acetonitrile entering the branch pipes 6 can be preheated by the steam in the jacket 2. The preheated aniline acetonitrile enters the material mixing box 1 through the discharge ports 7 and is dissolved in the bottom water by the stirring of the stirrer 4, and finally is discharged into the hydrolysis kettle through the discharging pipe 9.
[0021] In this embodiment, the aniline acetonitrile in the hopper 3 can enter the branch pipes 6 through the discharging pipe 5 and be preheated by the steam in the jacket 2 in the branch pipes 6. The preheating can make the aniline acetonitrile reach the melting point before entering the water, and then be discharged into the water from the discharge ports 7. The preheated and melted aniline acetonitrile can be dissolved in the water more quickly by the stirring of the stirrer 4, thereby improving the dissolution effect of the aniline acetonitrile and the material mixing efficiency.
[0022] In a possible implementation, the top surface of the jacket 2 is formed with an upward extending pipe sleeve 13, the pipe sleeve 13 wraps the discharging pipe 5 in a chamber communicated with the jacket 2, and the air outlet pipe 11 is communicated with the upper end of the pipe sleeve 13.
[0023] The upward extending pipe sleeve 13 can wrap the discharging pipe 5 in the jacket 2, so that the aniline acetonitrile entering the discharging pipe 5 starts to be preheated, which not only prolongs the preheating time and path, but also increases the preheating amount of the aniline acetonitrile, thereby avoiding the interruption of material supply.
[0024] In a possible implementation, a discharger 12 is installed between the lower end of the hopper 3 and the discharging pipe 5.
[0025] The discharger 12 can control the speed of the aniline acetonitrile in the hopper 3 entering the discharging pipe 5 and control the preheating amount of the aniline acetonitrile.
[0026] In a possible implementation, the top of the melting tank 1 is provided with a pump body 14, a circulating pipe 15 on the pump body 14 extends into the lower end of the melting tank 1 through the jacket 2, and a return pipe 16 on the pump body 14 communicates with the upper end of the downcomer 5.
[0027] The pump body 14 can extract the solution in the melting tank 1 through the circulating pipe 15, and inject the solution into the downcomer 5 through the return pipe 16, so as to pre-mix the aniline-based acetonitrile in the downcomer, improve the mixing effect, and make the molten aniline-based acetonitrile in the downcomer 5 flow down, thereby improving the discharging speed of the discharging port 7.
[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. A material mixing device for indigo production, comprising a material mixing tank (1) and a hopper (3), a jacket (2) is sleeved on the outer side of the material mixing tank (1), a discharging pipe (5) in communication with the material mixing tank (1) is fixed at the bottom of the hopper (3), and a stirrer (4) is installed in the material mixing tank (1), characterized in that: The bottom of the downcomer (5) is communicated with a plurality of branch pipes (6), the lower end of the branch pipe (6) is provided with a plurality of downward discharge ports (7), the branch pipe (6) is arranged in the jacket (2), the discharge port (7) penetrates the top wall of the material melting box (1) and extends into the inside, the upper and lower ends of the material melting box (1) are respectively provided with a water injection pipe (8) and a discharge pipe (9), the two ends of the jacket (2) are communicated with an air inlet pipe (10) and an exhaust pipe (11).
2. The solution preparation device for indigo production according to claim 1, characterized by: The top surface of the jacket (2) is formed with an upwardly extending pipe sleeve (13), the pipe sleeve (13) wraps the downcomer (5) in the chamber communicated with the jacket (2), and the exhaust pipe (11) is communicated with the upper end of the pipe sleeve (13).
3. The solution preparation device for indigo production according to claim 2, characterized in that: A material discharger (12) is arranged between the lower end of the hopper (3) and the downcomer (5).
4. The solution preparation device according to claim 1 or 2, wherein: A pump body (14) is arranged on the top of the material melting box (1), a circulating pipe (15) on the pump body (14) penetrates the jacket (2) and extends into the lower end of the material melting box (1), and a backflow pipe (16) on the pump body (14) is communicated with the upper end of the downcomer (5).