Preheater heated by steam condensate

Abstract

The utility model discloses a preheater heated by steam condensate, which comprises a shell, the shell is of a hollow square structure, a partition plate is arranged on the inner wall of the shell, the interior of the shell is divided into an upper cavity and a lower cavity by the partition plate, the partition plate is made of heat conduction materials, and a feeding pipe is arranged on the upper surface of the shell in a penetrating manner. According to the preheater heated through the steam condensate, the heat-conducting partition plate is arranged in the shell, the spiral conveying pipe is arranged above the partition plate, the steam condensate flows from the conveying pipe and heats the interior of the shell, so that materials located below the partition plate are preheated, and the steam condensate comes from a steam generation device in the waste liquid treatment process; the preheater does not need to be provided with an additional heating structure and is energy-saving and environment-friendly.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical equipment, in particular to a preheater heated by steam condensate. Background Art

[0002] Adipic acid, also known as fatty acid, is an important organic dibasic acid that can undergo salt-forming reaction, esterification reaction, amidation reaction, etc., and can be polycondensed with diamines or diols to form high molecular polymers. Adipic acid is an industrially important dicarboxylic acid, and plays an important role in chemical production, organic synthesis industry, medicine, lubricant manufacturing, etc. Its output ranks second among all dicarboxylic acids.

[0003] A large amount of adipic acid waste liquid is generated during the production and use of adipic acid. The waste liquid also contains dicarboxylic acids that can be recycled. Therefore, recycling the adipic acid waste liquid meets the needs of environmental protection and economy. When recycling adipic acid waste liquid, an evaporation system is usually used. The rising film and falling film evaporators in the evaporation system are used to recover the adipic acid. During the reaction, preheating the materials can reduce energy consumption. However, the current preheater uses a heating device to preheat the materials, which increases energy consumption during the reaction. Utility Model Content

[0004] The purpose of the utility model is to provide a preheater heated by steam condensate. The device utilizes the high-temperature steam condensate generated by a steam generating device during the process of generating steam, and utilizes the steam condensate to preheat the material to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a preheater heated by steam condensate, comprising an outer shell, the outer shell being a hollow square structure, the inner wall of the outer shell being provided with a partition, the partition dividing the interior of the outer shell into two upper and lower chambers, and the partition being made of a heat-conducting material, a feed pipe being provided through the upper surface of the outer shell, the other end of the feed pipe being provided through the surface of the partition and extending into the lower chamber of the outer shell, a discharge pipe being provided through the side surface of the outer shell, one end of the discharge pipe being located in the lower chamber of the outer shell, and a valve being provided inside the discharge pipe to control opening and closing, a heating structure being provided in the chamber above the outer shell, the heating structure being provided to preheat the material using the steam condensate generated in the process of generating steam by a steam generating device.

[0006] Preferably, the heating structure includes a delivery pipe, which is a hollow spiral structure. The delivery pipe is fixedly installed in the upper chamber of the shell, and the delivery pipe is staggered with the feed pipe. One end of the delivery pipe passes through the side surface of the shell and is connected to the liquid inlet pipe, and the other end of the delivery pipe passes through the other side surface of the shell and is connected to the liquid discharge pipe.

[0007] By adopting the above technical solution, the interior of the device is heated by utilizing the high-temperature steam condensate passing through the conveying pipe, thereby achieving the effect of preheating the material.

[0008] Preferably, the middle section of the liquid inlet pipe is configured as a retractable hose structure, one end of the liquid inlet pipe is fixed to the outer surface of the shell, two support rods are symmetrically arranged on the outer surface of the liquid inlet pipe, the other end of the support rod is fixedly mounted on the outer surface of the shell, and the support rod is a retractable structure.

[0009] By adopting the above technical solution, the retractable liquid inlet pipe can be used to better connect the liquid inlet pipe with the steam generating device.

[0010] Preferably, a material mixing structure is arranged inside the shell, and the material mixing structure is provided with a stirring rod to stir the material while preheating the material to prevent the material from settling.

[0011] By adopting the above technical solution, the material can be stirred by utilizing the material mixing structure to prevent the material from settling during the preheating process.

[0012] Preferably, the mixing structure includes a drain pipe, the cross-section of the drain pipe is L-shaped, the L-shaped drain pipe is fixedly installed on the outer surface of the shell, one end of the drain pipe is connected to the conveying pipe, and the other end of the drain pipe is arranged parallel to the lower surface of the shell, a cylinder is arranged inside the drain pipe, and the cylinder is connected with the drain pipe, and the cylinder is a hollow structure.

[0013] By adopting the above technical solution, the material mixing structure can be started by utilizing the flow of steam condensate in the discharge pipe.

[0014] Preferably, the inner wall of the cylinder is rotatably connected to an impeller, the rotating shaft of the impeller passes through the cylinder and the surface of the outer shell is provided with a driving wheel, the outer surface of the driving wheel is a gear structure, a driven wheel is provided on one side of the driving wheel, the driven wheel is rotatably connected to the bottom surface of the outer shell, a stirring rod is provided on the upper surface of the driven wheel, the outer surface of the driven wheel is a gear structure, and the driven wheel is meshed with the driving wheel.

[0015] By adopting the above technical solution, the steam condensate can be used to drive the impeller to rotate, thereby driving the stirring rod.

[0016] Preferably, the driven wheels and stirring rods are symmetrically arranged in two groups, and the two driven wheels are respectively meshed with the surface of the driving wheel.

[0017] By adopting the above technical solution, the two stirring rods move synchronously to fully stir the materials.

[0018] Compared with the prior art, the utility model has the following beneficial effects: the preheater heated by steam condensate:

[0019] 1. A heat-conducting partition is arranged inside the shell of the device, and a spiral conveying pipe is arranged above the partition. Steam condensate flows from the conveying pipe to heat the shell, thereby preheating the material below the partition. The steam condensate comes from the steam generating device in the waste liquid treatment process, so that the preheater does not need to be provided with an additional heating structure, which is energy-saving and environmentally friendly.

[0020] 2. The liquid inlet pipe connecting the device and the steam generating device is set as a retractable multi-section structure, one end of the liquid inlet pipe is fixed to the shell, and the other end is connected through a retractable support rod on the surface of the shell, and the middle section of the liquid inlet pipe is a retractable hose. The retractable structure of the liquid inlet pipe can be used to conveniently connect the preheater and the steam generating device;

[0021] 3. A driving wheel is arranged in the shell of the device, and the driving wheel is connected to the impeller below. The impeller is located in the discharge pipe. The driving wheel can be driven to rotate by the force of the impeller driven by the steam condensate. The rotation of the driving wheel drives the driven wheels on both sides to rotate, thereby driving the stirring rod to stir the preheated material in the shell to prevent the material from settling. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the front section structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the external structure of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the feed pipe and the delivery pipe of the utility model;

[0025] Figure 4 This is a schematic diagram of the cross-sectional structure of the liquid outlet pipe of the utility model;

[0026] Figure 5 This is a schematic diagram of the structure of the liquid inlet pipe of the utility model.

[0027] In the figure: 1. outer shell; 2. partition; 3. feed pipe; 4. discharge pipe; 5. conveying pipe; 6. liquid inlet pipe; 7. support rod; 8. discharge pipe; 9. cylinder; 10. driving wheel; 11. driven wheel; 12. stirring rod; 13. impeller. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figure 1-5The utility model provides a technical solution: a preheater heated by steam condensate, comprising a shell 1, a partition 2, a feed pipe 3, a discharge pipe 4, a delivery pipe 5, a liquid inlet pipe 6, a support rod 7, a liquid discharge pipe 8, a cylinder 9, a driving wheel 10, a driven wheel 11, a stirring rod 12, and an impeller 13.

[0030] This device has the effect of preheating adipic acid waste liquid, specifically:

[0031] The shell 1 is a hollow square structure, and the inner wall of the shell 1 is provided with a partition 2, which divides the interior of the shell 1 into two upper and lower chambers, and the partition 2 is made of a heat-conducting material. A feed pipe 3 is provided through the upper surface of the shell 1, and the other end of the feed pipe 3 penetrates the surface of the partition 2 and extends into the lower chamber of the shell 1. A discharge pipe 4 is provided through the side surface of the shell 1, and one end of the discharge pipe 4 is located in the lower chamber of the shell 1, and a valve is provided inside the discharge pipe 4 to control the opening and closing. A heating structure is provided in the chamber above the shell 1, and the heating structure is provided to generate steam condensate generated in the process of generating steam by the steam generating device. The material is preheated, and the heating structure includes a delivery pipe 5, which is a hollow spiral structure. The delivery pipe 5 is fixedly installed in the upper chamber of the shell 1, and the delivery pipe 5 is staggered with the feed pipe 3. One end of the delivery pipe 5 passes through the side surface of the shell 1 and is connected to the liquid inlet pipe 6, and the other end of the delivery pipe 5 passes through the other side surface of the shell 1 and is connected to the liquid discharge pipe 8. The middle section of the liquid inlet pipe 6 is set as a retractable hose structure, one end of the liquid inlet pipe 6 is fixed to the outer surface of the shell 1, and two support rods 7 are symmetrically arranged on the outer surface of the liquid inlet pipe 6. The other end of the support rod 7 is fixedly installed on the outer surface of the shell 1, and the support rod 7 is a retractable structure;

[0032] like Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, when using the device, the liquid inlet pipe 6 is held and pulled to extend the liquid inlet pipe 6. During the extension of the liquid inlet pipe 6, the support rod 7 will be driven to extend to stably support the liquid inlet pipe 6. The extended liquid inlet pipe 6 can be more convenient to connect with the steam generating device. After the liquid inlet pipe 6 is connected, the discharge pipe 4 is connected to the rising film evaporator of adipic acid, and the waste liquid of adipic acid is passed from the feed pipe 3 into the lower chamber of the shell 1. The steam condensate generated by the steam generating device enters the conveying pipe 5 in the shell 1 from the liquid inlet pipe 6, and flows along the conveying pipe 5 to the discharge pipe 8 for discharge. When the steam condensate moves in the conveying pipe 5, the high-temperature steam condensate heats the interior of the shell 1, and the heat is transferred to the lower chamber of the shell 1 under the action of the heat-conducting partition 2, so that the adipic acid waste liquid is preheated and enters the rising film evaporator along the discharge pipe 4 for reaction.

[0033] This device has the effect of preventing waste liquid from settling, specifically:

[0034] A mixing structure is arranged inside the shell 1. While the mixing structure is preheating the material, a stirring rod 12 is arranged to stir the material to prevent the material from settling. The mixing structure includes a drain pipe 8. The cross section of the drain pipe 8 is L-shaped. The L-shaped drain pipe 8 is fixedly installed on the outer surface of the shell 1. One end of the drain pipe 8 is connected to the conveying pipe 5. The other end of the drain pipe 8 is arranged parallel to the lower surface of the shell 1. A cylinder 9 is arranged inside the drain pipe 8, and the cylinder 9 is connected to the drain pipe 8. The cylinder 9 is a hollow structure. The inner wall of the cylinder 9 is rotated to connect An impeller 13 is connected, the rotating shaft of the impeller 13 passes through the cylinder 9 and the surface of the outer shell 1 is provided with a driving wheel 10, the outer surface of the driving wheel 10 is a gear structure, a driven wheel 11 is provided on one side of the driving wheel 10, the driven wheel 11 is rotatably connected to the bottom surface of the outer shell 1, a stirring rod 12 is provided on the upper surface of the driven wheel 11, the outer surface of the driven wheel 11 is a gear structure, and the driven wheel 11 is meshed with the driving wheel 10, and two groups of driven wheels 11 and stirring rods 12 are symmetrically provided, and the two driven wheels 11 are respectively meshed with the surface of the driving wheel 10;

[0035] like Figure 1 and Figure 4 As shown, when the steam condensate moves in the discharge pipe 8, it moves along the discharge pipe 8 into the cylinder 9 and drives the impeller 13 in the cylinder 9 to rotate. The rotation of the impeller 13 drives the driving wheel 10 to rotate. The rotation of the driving wheel 10 drives the driven wheels 11 on both sides to rotate. The rotation of the driven wheel 11 drives the stirring rod 12 above to rotate. The rotating stirring rod 12 continuously stirs the adipic acid waste liquid being preheated in the chamber below the shell 1 to prevent the waste liquid from precipitating during the preheating process and affecting the reaction process.

[0036] Working principle: When using the preheater heated by steam condensate, the liquid inlet pipe 6 is a retractable structure, and the preheater can be conveniently connected to the steam generating device by using the extendable liquid inlet pipe 6. A spiral conveying pipe 5 is arranged in the outer shell 1. The steam condensate generated by the steam generating device flows in the conveying pipe 5, so as to heat the inner shell 1, thereby preheating the adipic acid, so that the preheater does not need to be provided with an additional heating structure, which is energy-saving and environmentally friendly. After the steam condensate heats the device, it is discharged from the discharge pipe 8. During the movement of the discharge pipe 8, the steam condensate drives the impeller 13 to rotate, and the rotation of the impeller 13 drives the driving wheel 10 to rotate, and the rotation of the driving wheel 10 drives the driven wheel 11 to rotate, and the rotating driven wheel 11 drives the stirring rod 12 to rotate, thereby preventing the adipic acid waste from precipitating during the preheating process, thereby increasing the overall practicality.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A preheater heated by steam condensate, comprising a shell (1), the shell (1) being a hollow square structure, the inner wall of the shell (1) being provided with a partition (2), the partition (2) dividing the interior of the shell (1) into two upper and lower chambers, and the partition (2) being made of a heat-conducting material, a feed pipe (3) being provided through the upper surface of the shell (1), the other end of the feed pipe (3) being provided through the surface of the partition (2) and extending into the lower chamber of the shell (1), a discharge pipe (4) being provided through the side surface of the shell (1), one end of the discharge pipe (4) being located in the lower chamber of the shell (1), and a valve being provided inside the discharge pipe (4) for controlling opening and closing, characterized in that: A heating structure is arranged in the chamber above the shell (1), and the heating structure is arranged to preheat the material by utilizing the steam condensate generated in the process of generating steam by the steam generating device.

2. A preheater heated by steam condensate according to claim 1, characterized in that: The heating structure comprises a delivery pipe (5), the delivery pipe (5) being a hollow spiral structure, the delivery pipe (5) being fixedly installed in the upper chamber of the outer shell (1), and the delivery pipe (5) being staggered with the feed pipe (3), one end of the delivery pipe (5) penetrating the side surface of the outer shell (1) and being connected to a liquid inlet pipe (6), and the other end of the delivery pipe (5) penetrating the other side surface of the outer shell (1) and being connected to a liquid discharge pipe (8).

3. A preheater heated by steam condensate according to claim 2, characterized in that: The middle section of the liquid inlet pipe (6) is arranged as a telescopic hose structure, one end of the liquid inlet pipe (6) is fixed to the outer surface of the housing (1), two support rods (7) are symmetrically arranged on the outer surface of the liquid inlet pipe (6), the other end of the support rod (7) is fixedly mounted on the outer surface of the housing (1), and the support rod (7) is a telescopic structure.

4. A preheater heated by steam condensate according to claim 1, characterized in that: A material mixing structure is arranged inside the outer shell (1), and while the material mixing structure preheats the material, a stirring rod (12) is arranged to stir the material to prevent the material from settling.

5. A preheater heated by steam condensate according to claim 4, characterized in that: The mixing structure comprises a drain pipe (8), the cross section of the drain pipe (8) is L-shaped, the L-shaped drain pipe (8) is fixedly mounted on the outer surface of the housing (1), one end of the drain pipe (8) is connected to the delivery pipe (5), the other end of the drain pipe (8) is arranged parallel to the lower surface of the housing (1), a cylinder (9) is arranged inside the drain pipe (8), and the cylinder (9) is connected to the drain pipe (8), and the cylinder (9) is a hollow structure.

6. A preheater heated by steam condensate according to claim 5, characterized in that: The inner wall of the cylinder (9) is rotatably connected to an impeller (13); the rotating shaft of the impeller (13) passes through the cylinder (9) and the surface of the outer shell (1); a driving wheel (10) is provided; the outer surface of the driving wheel (10) is a gear structure; a driven wheel (11) is provided on one side of the driving wheel (10); the driven wheel (11) is rotatably connected to the bottom surface of the outer shell (1); a stirring rod (12) is provided on the upper surface of the driven wheel (11); the outer surface of the driven wheel (11) is a gear structure, and the driven wheel (11) is meshed with the driving wheel (10).

7. A preheater heated by steam condensate according to claim 6, characterized in that: The driven wheels (11) and stirring rods (12) are symmetrically arranged in two groups, and the two driven wheels (11) are respectively meshed with the surface of the driving wheel (10).

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