Continuous refining device for tetrahydrofurfuryl alcohol

Abstract

A continuous refining device for tetrahydrofurfuryl alcohol comprises a reactor and a separator, a discharging conveying pipeline of the reactor is communicated with the feeding end of the separator through a cooling tank, an interlayer structure is arranged on the outer side wall of the columnar reactor, and water cooled by a cooling tank is conveyed to the interlayer structure through a cooling pump. The water of the interlayer structure flows back to the cooling tank through a pipeline to be cooled, the discharging end of the furfuryl alcohol coarse mixing device is conveyed to the furfuryl alcohol feeding end of the reactor through a furfuryl alcohol conveying pump, and a furfuryl alcohol catalyst is conveyed to the catalyst feeding end of the reactor through an electric heater. A catalyst is heated by the electric heater and then sent to the reactor, hydrogen is introduced into the reactor, furfuryl alcohol is sent to the reactor after being mixed, cooling water is introduced into the sandwich structure through the cooling pump for reaction, and a product enters the synthetic liquid separation tank for separation to obtain tetrahydrofurfuryl alcohol, so that the production efficiency is greatly improved, the consumption of the catalyst is low, and the production cost is low. Meanwhile, the probability of side reaction is also reduced.

Description

Technical Field

[0001] This utility model relates to a furfuryl alcohol production line, specifically a device for continuous refining tetrahydrofurfuryl alcohol. Background Technology

[0002] Tetrahydrofurfuryl alcohol (THFA) is an important organic chemical raw material with wide applications in the pharmaceutical, pesticide, dye, and fragrance industries. To obtain high-purity THFA, continuous refining equipment is widely used in its production process. However, current equipment consumes a high amount of catalyst and has a high probability of side reactions. Utility Model Content

[0003] To address the aforementioned problems, the purpose of this invention is to provide a continuous refining apparatus for tetrahydrofurfuryl alcohol.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows: a continuous refining device for tetrahydrofurfuryl alcohol, comprising a reactor and a separator, wherein the discharge conveying pipe of the reactor is connected to the feed end of the separator via a cooling tank, the outer wall of the columnar reactor is provided with a jacket structure, water cooled by the cooling tank is pumped to the jacket structure via a cooling pump, and the water in the jacket structure is then returned to the cooling tank via a pipe for cooling, the discharge end of the furfuryl alcohol coarse mixing device is pumped to the furfuryl alcohol feed end of the reactor via a furfuryl alcohol conveying pump, and the furfuryl alcohol catalyst is fed to the catalyst feed end of the reactor via an electric heater.

[0005] Furthermore, furfuryl alcohol is pumped to the reactor after passing through multiple preheaters.

[0006] Furthermore, furfuryl alcohol is pumped to the reactor after passing through multiple preheaters.

[0007] Furthermore, the heat source cooling outlets of multiple preheaters are sent to the cooling tank heat exchange structure through pipelines, and the heat source outlets of the cooling tank heat exchange structure are connected to the heat source inlet of each preheater.

[0008] Furthermore, the separator is a gas-liquid separator.

[0009] Furthermore, the discharge end of the separator is connected to the crude product tank via a conveying pipeline, and the crude product tank is then connected to the crude tetrahydrogen feed end of the furfuryl alcohol coarse mixing unit.

[0010] Furthermore, a hydrogen buffer tank is also provided at the hydrogen output end of the separator.

[0011] The catalyst of this invention is heated by an electric heater and then fed into a reactor. Hydrogen gas is introduced into the reactor, followed by furfuryl alcohol. After mixing, the mixture is fed back into the reactor. Cooling water is pumped through a cooling pump in a jacketed structure to react. The product then enters a synthesis liquid separation tank to separate tetrahydrofurfuryl alcohol. This invention can remove impurities from tetrahydrofurfuryl alcohol, such as moisture, unreacted raw materials, and byproducts, thereby improving the purity of the product. High-purity tetrahydrofurfuryl alcohol can meet the high requirements of downstream industries for raw material quality. Compared with batch production, continuous refining equipment can achieve continuous and automated production, reduce manual operation, and improve production efficiency. Continuous refining equipment usually has a high degree of automation, which can reduce labor costs. At the same time, by optimizing the production process, energy consumption and material consumption can be reduced, thereby reducing production costs. Continuous refining equipment usually adopts a closed design, which can reduce the emission of harmful gases and reduce environmental pollution. At the same time, by recycling and treating wastewater, waste gas, and other wastes, resource recycling can be achieved, which greatly improves production efficiency. Moreover, catalyst consumption is low, and the probability of side reactions is also reduced. 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 frame structure of this utility model. Detailed Implementation

[0014] like Figure 1 As shown, a continuous refining apparatus for tetrahydrofurfuryl alcohol includes a reactor 1 and a separator 2. The discharge pipeline of the reactor 1 is connected to the feed end of the separator 2 via a cooling tank 3. The outer wall of the columnar reactor 1 is provided with a jacket structure 4. Water cooled by the cooling tank 5 is sent to the jacket structure 4 via a cooling pump 6. The water in the jacket structure 4 is then returned to the cooling tank 5 via a pipeline for further cooling. The discharge end of the furfuryl alcohol coarse mixing device 7 is sent to the furfuryl alcohol feed end of the reactor 1 via a furfuryl alcohol transfer pump 8. The furfuryl alcohol catalyst is sent to the catalyst feed end of the reactor 1 via an electric heater 9.

[0015] Specifically: the furfuryl alcohol transfer pump 8 delivers the product to the reactor 1 after passing through multiple preheaters 10. The heat source cooling outlet of the multiple preheaters 10 is sent to the heat exchange structure of the cooling tank 5 through a pipeline. The heat source outlet of the heat exchange structure of the cooling tank 5 is connected to the heat source inlet of each preheater 10. The separator 2 is a gas-liquid separator. The discharge end of the separator 2 is connected to the crude product tank through a conveying pipeline. The crude product tank is then connected to the crude tetrahydrogen feed end of the furfuryl alcohol coarse mixing device 7. A hydrogen buffer tank is also provided at the hydrogen output end of the separator 2.

[0016] The working principle of this invention is as follows: the catalyst is heated by the electric heater 9 and then sent to the reactor 1. Hydrogen gas is introduced into the reactor 1, and crude mixed furfuryl alcohol is also introduced. After mixing, the mixture is sent to the reactor 1. Cooling water is introduced through the cooling pump 6 in the jacket structure 4. After the reaction, the product enters the synthesis liquid separation tank to separate tetrahydrofurfuryl alcohol, which greatly improves the production efficiency, reduces the consumption of catalyst, and also reduces the probability of side reactions.

[0017] 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 continuous refining apparatus for tetrahydrofurfuryl alcohol, comprising a reactor (1) and a separator (2), characterized in that: The discharge pipeline of reactor (1) is connected to the feed end of separator (2) through cooling tank (3). The outer wall of the columnar reactor (1) is provided with a jacket structure (4). The water cooled by cooling tank (5) is sent to jacket structure (4) through cooling pump (6). The water in jacket structure (4) is then returned to cooling tank (5) through pipeline for cooling. The discharge end of furfuryl alcohol coarse mixing device (7) is sent to furfuryl alcohol feed end of reactor (1) through furfuryl alcohol transfer pump (8). Furfuryl alcohol catalyst is sent to catalyst feed end of reactor (1) through electric heater (9).

2. The continuous refining apparatus for tetrahydrofurfuryl alcohol as described in claim 1, characterized in that: The furfuryl alcohol transfer pump (8) delivers the fuel to the reactor (1) after passing through multiple preheaters (10).

3. The continuous refining apparatus for tetrahydrofurfuryl alcohol as described in claim 1, characterized in that: The discharge end of the separator (2) is connected to the crude tetrahydrogen feed end of the furfuryl alcohol coarse mixing device (7).

4. The continuous refining apparatus for tetrahydrofurfuryl alcohol as described in claim 2, characterized in that: The heat source cooling outlets of multiple preheaters (10) are sent to the heat exchange structure of the cooling tank (5) through pipelines. The heat source outlet of the heat exchange structure of the cooling tank (5) is connected to the heat source inlet of each preheater (10).

5. The continuous refining apparatus for tetrahydrofurfuryl alcohol as described in claim 1, characterized in that: The separator (2) is a gas-liquid separator.

6. The continuous refining apparatus for tetrahydrofurfuryl alcohol as described in claim 1, characterized in that: The discharge end of the separator (2) is connected to the crude product tank through a conveying pipeline, and the crude product tank is then connected to the crude product tetrahydrogen feed end of the furfuryl alcohol coarse mixing device (7).

7. The continuous refining apparatus for tetrahydrofurfuryl alcohol as described in claim 1, characterized in that: The hydrogen output end of the separator (2) is also equipped with a hydrogen buffer tank.

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