Reboiler for refining furfuryl alcohol

Abstract

A reboiler for refining furfuryl alcohol comprises a tank body and an overflow port in one side of the top of the tank body, an inner layer of U-shaped bolts and an outer layer of U-shaped bolts are fixed in the tank body through a plurality of pieces of vertical angle steel, an inner spiral coil pipe penetrates through each U-shaped bolt in the inner layer, and the upper end of the inner spiral coil pipe is fixedly communicated with an inner coil pipe inlet penetrating through the tank body. The lower end of the inner spiral coil pipe is fixedly communicated with an inner coil pipe outlet penetrating through the tank body, the outer spiral coil pipe penetrates through each U-shaped bolt on the outer layer, the upper end of the outer spiral coil pipe is fixedly communicated with an outer coil pipe inlet penetrating through the tank body, and the lower end of the outer spiral coil pipe is fixedly communicated with an outer coil pipe outlet penetrating through the tank body; a circulation opening is further formed in the bottom of the tank body and communicated with the tank body. The inner spiral coil pipe and the outer spiral coil pipe form a two-layer spiral uniform comprehensive heating channel, the heat exchange structure can fully cover and make contact with products, fully utilize heat energy and effectively reduce heat loss, and the heat exchange structure is simple and reasonable in design, does not need regular inspection and maintenance and is low in maintenance cost.

Description

Technical Field

[0001] This utility model relates to a furfuryl alcohol production apparatus, specifically a furfuryl alcohol reboiler. Background Technology

[0002] Furfuryl alcohol reboilers are key pieces of equipment used in the production or refining of furfuryl alcohol. Their main function is to provide the necessary heat for processes such as distillation and separation of furfuryl alcohol, causing the liquid furfuryl alcohol to boil under specific pressure and generate vapor that returns to the column to maintain the continuous operation of the relevant processes. Furfuryl alcohol reboilers ensure that furfuryl alcohol is kept at the required temperature in the distillation column or other reaction equipment, thereby promoting the effective separation or reaction of furfuryl alcohol. By precisely controlling the temperature, the distillation or reaction process can be optimized, thereby improving production efficiency and product quality. A well-designed reboiler can effectively utilize thermal energy and reduce energy consumption and emissions.

[0003] However, current furfuryl alcohol reboilers may not be able to fully utilize heat energy due to improper design or material selection. For example, the heat exchange structure may not be able to fully cover the product in contact with the product, resulting in significant heat loss. If the heat exchange structure design is unreasonable, the maintenance cost of the reboiler may be high due to the need for regular inspection and maintenance, as well as replacement of damaged parts. Some reboilers may require a complex control system to precisely control the temperature, which increases the complexity of operation. Utility Model Content

[0004] To address the aforementioned problems, the purpose of this invention is to provide a reboiler for furfuryl alcohol refining.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: a reboiler for furfuryl alcohol refining includes a tank body and an overflow port on one side of the top of the tank body. Multiple vertical angle steels fix two layers of U-bolts inside the tank body. An inner spiral coil penetrates each U-bolt of the inner layer, and the upper end of the inner spiral coil is fixedly connected to an inner coil inlet penetrating the tank body, while the lower end of the inner spiral coil is fixedly connected to an inner coil outlet penetrating the tank body. An outer spiral coil penetrates each U-bolt of the outer layer, and the upper end of the outer spiral coil is fixedly connected to an outer coil inlet penetrating the tank body, while the lower end of the outer spiral coil is fixedly connected to an outer coil outlet penetrating the tank body. A circulation port is also provided at the bottom of the tank body, communicating with the tank body.

[0006] Furthermore, a feed inlet is provided on one side of the top of the tank, and the diameter of the feed inlet is larger than the diameter of the overflow outlet.

[0007] Furthermore, the inner coil inlet and outer coil inlet vertically penetrate the top of the tank, while the inner coil outlet and outer coil outlet vertically penetrate the bottom of the tank.

[0008] Furthermore, a manhole with a sealing cap is provided at the center of the top of the tank.

[0009] Furthermore, the lower end of each angle steel is fixedly connected to the bottom side wall of the tank body via a pad.

[0010] Furthermore, the tank is supported and fixed within a rectangular frame.

[0011] This invention utilizes a heating medium (such as steam or heat transfer oil) to exchange heat with furfuryl alcohol liquid. The heating medium passes through an inner and outer spiral coil that fills the tank, forming two layers of spiral-shaped, uniform, and comprehensive heating channels. This allows for faster and more even heat transfer to the furfuryl alcohol, raising its temperature to its boiling point. This heat exchange structure not only fully covers the product in contact with the product, maximizing heat energy utilization and effectively reducing heat loss, but also features a simple and reasonable design that eliminates the need for regular inspections and maintenance, resulting in low maintenance costs. Furthermore, the internal temperature of the tank can be easily controlled simply by adjusting the inflow and outflow of the inner and outer spiral coils, eliminating the need for a complex control system and reducing operational complexity. Attached Figure Description

[0012] The present invention will now be further described with reference to the accompanying drawings.

[0013] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of the tank body of this utility model from the front view.

[0015] Figure 3 This is a top view of the internal structure of the tank body of this utility model;

[0016] Figure 4 This is a schematic diagram of the internal and external spiral coils of this utility model;

[0017] Figure 5 This is a physical reference drawing of the present invention. Detailed Implementation

[0018] like Figure 1-4 As shown, a reboiler for furfuryl alcohol refining includes a tank body 1 and an overflow port 2 on one side of the top of the tank body 1. Multiple vertical angle steels 3 are used to fix two layers of U-bolts 4 inside the tank body 1. An inner spiral coil 5 penetrates each of the inner U-bolts 4, and the upper end of the inner spiral coil 5 is fixedly connected to an inner coil inlet 6 penetrating the tank body 1. The lower end of the inner spiral coil 5 is fixedly connected to an inner coil outlet 7 penetrating the tank body 1. An outer spiral coil 8 penetrates each of the outer U-bolts 4, and the upper end of the outer spiral coil 8 is fixedly connected to an outer coil inlet 9 penetrating the tank body 1. The lower end of the outer spiral coil 8 is fixedly connected to an outer coil outlet 10 penetrating the tank body 1. A circulation port 11 is also provided at the bottom of the tank body 1, communicating with the inside of the tank body 1.

[0019] Specifically: A feed inlet 12 is provided on one side of the top of the tank body 1, and the diameter of the feed inlet 12 is larger than the diameter of the overflow outlet 2. The inner coil inlet 6 and the outer coil inlet 9 vertically penetrate the top of the tank body 1, while the inner coil outlet 7 and the outer coil outlet 10 vertically penetrate the bottom of the tank body 1. A manhole 13 with a sealing cover is provided at the center of the top of the tank body 1. The lower end of each angle steel 3 is fixedly connected to the inner bottom side wall of the tank body 1 through a pad 14. The support of the tank body 1 is fixed in a rectangular frame 15.

[0020] Working principle of this utility model

[0021] Heat transfer principle: The furfuryl alcohol reboiler exchanges heat with the furfuryl alcohol liquid through a heating medium (such as steam, heat transfer oil, etc.). The heating medium is heated through the inner spiral coil 5 and the outer spiral coil 8 that fill the tank 1. The inner spiral coil 5 and the outer spiral coil 8 form two layers of spiral uniform and comprehensive heating channels, which transfer heat to the furfuryl alcohol more quickly and evenly, raising its temperature to the boiling point.

[0022] Phase equilibrium principle: In the furfuryl alcohol reboiler, the furfuryl alcohol liquid is heated and vaporized, forming a vapor-liquid two-phase equilibrium. The generated vapor is rich in light components and returns to the relevant tower, where it undergoes mass and heat transfer with the liquid descending in the tower, thereby achieving the process objectives of furfuryl alcohol separation and purification.

[0023] Circulation principle: The circulation method varies depending on the type of reboiler. For example, the thermosiphon reboiler relies on the density difference between the liquid at the bottom of the column and the vapor-liquid mixture in the reboiler to generate natural circulation power; the forced circulation reboiler uses a pump to drive the furfuryl alcohol liquid to circulate, so that it continuously flows through the reboiler and is heated.

[0024] The above description is merely an illustrative embodiment of this utility model and is not intended to limit the scope of this utility model. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of this utility model should fall within the protection scope of this utility model.

Claims

1. A furfuryl alcohol refining reboiler comprising a tank body (1) and an overflow port (2) on one side of the top of the tank body (1), characterized in that: The tank (1) is fixed with two layers of U-bolts (4) inside by multiple vertical angle steels (3). The inner spiral coil (5) passes through each U-bolt (4) of the inner layer. The upper end of the inner spiral coil (5) is fixedly connected to the inner coil inlet (6) that passes through the tank (1). The lower end of the inner spiral coil (5) is fixedly connected to the inner coil outlet (7) that passes through the tank (1). The outer spiral coil (8) passes through each U-bolt (4) of the outer layer. The upper end of the outer spiral coil (8) is fixedly connected to the outer coil inlet (9) that passes through the tank (1). The lower end of the outer spiral coil (8) is fixedly connected to the outer coil outlet (10) that passes through the tank (1). The bottom of the tank (1) is also provided with a circulation port (11) that communicates with the inside of the tank (1).

2. A furfuryl alcohol purification reboiler as defined in claim 1, wherein: A feed inlet (12) is provided on one side of the top of the tank (1), and the diameter of the feed inlet (12) is larger than the diameter of the overflow outlet (2).

3. A furfuryl alcohol purification reboiler as defined in claim 1 wherein: The inner coil inlet (6) and the outer coil inlet (9) penetrate vertically through the top of the tank (1), while the inner coil outlet (7) and the outer coil outlet (10) penetrate vertically through the bottom of the tank (1).

4. A furfuryl alcohol purification reboiler as defined in claim 1 wherein: The top center of the tank (1) is provided with a manhole (13) with a sealing cap.

5. A furfuryl alcohol purification reboiler as defined in claim 1 wherein: The lower end of each angle steel (3) is fixedly connected to the bottom side wall of the tank body (1) through a pad (14).

6. A furfuryl alcohol purification reboiler as defined in claim 1 wherein: The tank (1) is fixed within a rectangular frame (15).

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