Dioxolame distillation tower for removing formaldehyde

Abstract

The utility model discloses a dioxolame distillation tower for removing formaldehyde, and relates to the technical field of dioxolame production, the dioxolame distillation tower comprises a tower body and a heating assembly arranged on the tower body, and the tower body is also provided with a feed pipe, an exhaust pipe and a discharge pipe; a feeding valve is mounted on the feeding pipe, one end of the feeding pipe is connected with a material pumping assembly arranged outside the tower body, and the other end of the feeding pipe is connected with a liquid homogenizing assembly arranged inside the tower body; an exhaust valve is mounted on the exhaust pipe, the exhaust pipe is connected with a condenser through an air guide pipe, and a liquid outlet of the condenser is connected with a collecting tank; the discharge pipe is arranged at the bottom of the tower body and is provided with a discharge valve; and a rotary assembly is also arranged in the tower body. The device accelerates the inflow speed of raw materials, the raw materials are uniformly heated after uniformly entering the tower body, heat transfer in the distillation process is promoted, and the distillation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dioxolane production, in particular to a dioxolane distillation tower for removing formaldehyde. Background Art

[0002] Dioxolane is a chemical reagent with the molecular formula C3H6O2 and the appearance is a white liquid with the properties of water. During the production process of dioxolane, formaldehyde is dissolved, resulting in insufficient purity of dioxolane. However, dioxolane and formaldehyde are both miscible solvents and have a large difference in boiling points, so they are usually separated by distillation. Currently, most existing distillation towers rely on a single heating method to make the raw materials react. This distillation method has a slow reaction rate of the raw materials and low distillation efficiency. Utility Model Content

[0003] The purpose of the utility model is to solve the problems raised in the above background technology, and then proposes a dioxolane distillation tower for removing formaldehyde.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A dioxolane distillation tower for removing formaldehyde comprises a tower body and a heating component arranged on the tower body, wherein a feed pipe, an exhaust pipe and a discharge pipe are also arranged on the tower body; a feed valve is installed on the feed pipe and one end of the feed pipe is connected to a pump assembly arranged outside the tower body to speed up the feed speed of the raw material, and the other end of the feed pipe is connected to a liquid equalizing assembly arranged inside the tower body to achieve uniform injection of the raw material; an exhaust valve is installed on the exhaust pipe and the exhaust pipe is connected to a condenser through an air guide pipe, and the liquid outlet of the condenser is connected to a collection tank to achieve distillation of dioxolane and collection after condensation; the discharge pipe is arranged at the bottom of the tower body and a discharge valve is installed thereon; a rotary assembly is also arranged inside the tower body to heat the raw material evenly and promote heat transfer during the distillation process.

[0006] Furthermore, the pump assembly includes a material pump, an injection pipe and a material guide pipe; the material pump is arranged outside the tower body and is connected to the injection pipe and the material guide pipe, the injection pipe is connected to an external raw material source, and the material guide pipe is connected to one end of the feed pipe.

[0007] Furthermore, the pump material assembly includes a material pump, an injection pipe, a material guide pipe, a tee, a feed pipe, a feed valve, a water inlet pipe and a water inlet valve; the material pump is arranged outside the tower body and is connected to the injection pipe and the material guide pipe, the injection pipe is connected to the feed pipe and the water inlet pipe through a tee, the feed pipe is provided with a feed valve and the feed pipe is connected to an external raw material source, the water inlet pipe is provided with a water inlet valve and the water inlet pipe is connected to an external water source, and the material guide pipe is connected to one end of the feed pipe; the water inlet valve can be opened and the feed valve can be closed to clean the inside of the tank body, thereby improving the use effect.

[0008] Furthermore, the liquid equalizing component includes a liquid equalizing tube and a liquid equalizing box; the liquid equalizing tube is connected to the other end of the feed tube, and the liquid equalizing tube is connected to a liquid equalizing box horizontally arranged, and a plurality of drainage holes are arranged at the bottom of the liquid equalizing box.

[0009] Furthermore, the rotary assembly includes a drive motor and blades; the drive motor is arranged at the bottom end of the tower body and is connected to the blades arranged at the bottom end of the tower body so that the drive motor drives the blades to rotate horizontally in the tower body.

[0010] Furthermore, a pressure pump is installed on the air guide pipe to promote the circulation of steam.

[0011] Furthermore, an automatic pressure relief valve is installed on the tower body. When the pressure in the tower body reaches a critical value, the automatic pressure relief valve automatically starts the pressure relief operation, which has a good safety effect.

[0012] Furthermore, a hydrophobic membrane is provided in the tower body, and the hydrophobic membrane is located above the liquid equalizing component to increase the concentration of dioxolane.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model accelerates the inflow speed of raw materials by setting the pump material component, and makes the raw materials evenly enter the tower body for distillation operation through the liquid equalizing component. In the distillation process, due to the setting of the rotary component, the raw materials are evenly heated, which promotes heat transfer in the distillation process and further improves the distillation efficiency of dioxolane. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0016] Figure 2 This is a schematic diagram of the structure of Embodiment 2 of the present utility model;

[0017] Figure 3 This is a schematic diagram of the structure of Embodiment 3 of the present utility model;

[0018] Wherein: 1. tower body; 11. feed pipe; 111. feed valve; 12. exhaust pipe; 121. exhaust valve; 13. discharge pipe; 131. discharge valve; 2. pump assembly; 21. material pump; 22. injection pipe; 221. material guide pipe; 23. tee; 24. feed pipe; 241. feed valve; 25. water inlet pipe; 251. water inlet valve; 3. liquid equalizing assembly; 31. liquid equalizing pipe; 32. liquid equalizing box; 321. discharge hole; 4. air guide pipe; 5. condenser; 6. collecting tank; 7. rotary assembly; 71. drive motor; 72. blades; 8. pressure pump; 9. automatic pressure relief valve; 91. hydrophobic membrane. DETAILED DESCRIPTION

[0019] 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. The utility model is further described in combination with the drawings and embodiments:

[0020] Embodiment 1:

[0021] Refer to the attached Figure 1 As shown, a dioxolane distillation tower for removing formaldehyde includes a tower body 1 and a heating component arranged on the tower body 1. The tower body 1 is also provided with a feed pipe 11, an exhaust pipe 12 and a discharge pipe 13; wherein a feed valve 111 is installed on the feed pipe 11 and one end of the feed pipe 11 is connected to a pump component 2 arranged outside the tower body 1 to speed up the feed speed of the raw material, and the other end of the feed pipe 11 is connected to a liquid equalizing component 3 arranged inside the tower body 1 to achieve uniform injection of the raw material; wherein the exhaust pipe 12 is installed An exhaust valve 121 is provided and the exhaust pipe 12 is connected to a condenser 5 via an air guide pipe 4; a liquid outlet of the condenser 5 is connected to a collecting tank 6 to realize the distillation of dioxolane and the collection of the dioxolane after condensation; wherein a discharge pipe 13 is provided at the bottom of the tower body 1 and a discharge valve 131 is installed thereon; when the dioxolane distillation operation is completed, the discharge operation in the tower body 1 can be realized by opening the discharge valve 131; wherein a rotary assembly 7 is also provided inside the tower body 1 to heat the raw materials evenly and promote heat transfer during the distillation process.

[0022] Specifically, in one of the schemes, the pump assembly 2 includes a material pump 21, an injection pipe 22 and a material guide pipe 221; the material pump 21 is arranged outside the tower body 1 and is connected to the injection pipe 22 and the material guide pipe 221, the injection pipe 22 is connected to an external raw material source, and the material guide pipe 221 is connected to one end of the feed pipe 11.

[0023] Specifically, in another scheme, the pump assembly 2 includes a material pump 21, an injection pipe 22, a material guide pipe 221, a tee 23, a feed pipe 24, a feed valve 241, a water inlet pipe 25 and a water inlet valve 251; the material pump 21 is arranged outside the tower body 1 and is connected to the injection pipe 22 and the material guide pipe 221, the injection pipe 22 is connected to the feed pipe 24 and the water inlet pipe 25 through the tee 23, the feed pipe 24 is provided with a feed valve 241 and the feed pipe 24 is connected to an external raw material source, the water inlet pipe 25 is provided with a water inlet valve 251 and the water inlet pipe 25 is connected to an external water source, and the material guide pipe 221 is connected to one end of the feed pipe 11; in this scheme, the water inlet valve 251 is opened and the feed valve 241 is closed to clean the inside of the tank body, thereby improving the use effect.

[0024] Specifically, the liquid equalizing component 3 includes a liquid equalizing tube 31 and a liquid equalizing box 32; the liquid equalizing tube 31 is connected to the other end of the feed tube 11, and the liquid equalizing tube 31 is connected to a liquid equalizing box 32 horizontally arranged, and a plurality of drainage holes 321 are provided at the bottom of the liquid equalizing box 32.

[0025] Specifically, the rotary assembly 7 includes a drive motor 71 and blades 72; the drive motor 71 is arranged at the outer bottom end of the tower body 1 and is connected to the blades 72 arranged at the inner bottom end of the tower body 1 so that the drive motor 71 drives the blades 72 to rotate horizontally in the tower body 1.

[0026] Embodiment 2:

[0027] Taking into account the natural exhaust speed of steam, Figure 2 As shown, in this embodiment, a pressure pump 8 is installed on the air guide pipe 4 to promote the circulation of steam.

[0028] Embodiment 3:

[0029] Considering that the increase of the internal pressure of the tower body 1 may cause safety problems, Figure 3 As shown, in this embodiment, an automatic pressure relief valve 9 is installed on the tower body 1. When the pressure in the tower body 1 reaches a critical value, the automatic pressure relief valve 9 automatically starts the pressure relief operation, and the safety effect is good. In addition, a hydrophobic membrane 91 that allows gas to pass is also provided in the tower body 1. The hydrophobic membrane 91 is located above the liquid equalizing component 3 to increase the concentration of dioxolane.

[0030] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the protection required by the utility model. The scope of protection required by the utility model is defined by the attached claims and their equivalents.

Claims

1. A dioxolane distillation tower for removing formaldehyde, comprising a tower body (1) and a heating assembly arranged on the tower body (1), the tower body (1) also being provided with a feed pipe (11), an exhaust pipe (12) and a discharge pipe (13); characterized in that: A feed valve (111) is installed on the feed pipe (11), one end of the feed pipe (11) is connected to a pump assembly (2) arranged outside the tower body (1), and the other end of the feed pipe (11) is connected to a liquid equalizing assembly (3) arranged inside the tower body (1); An exhaust valve (121) is installed on the exhaust pipe (12), and the exhaust pipe (12) is connected to a condenser (5) via an air guide pipe (4), and a liquid outlet of the condenser (5) is connected to a collection tank (6); A discharge pipe (13) is arranged at the bottom of the tower body (1) and a discharge valve (131) is installed on the discharge pipe; A rotating assembly (7) is also provided inside the tower body (1).

2. A dioxolane distillation tower for removing formaldehyde according to claim 1, characterized in that: The material pump assembly (2) comprises a material pump (21), an injection pipe (22) and a material guide pipe (221); the material pump (21) is arranged outside the tower body (1) and is connected to the injection pipe (22) and the material guide pipe (221); the injection pipe (22) is connected to an external raw material source, and the material guide pipe (221) is connected to one end of the feed pipe (11).

3. A dioxolane distillation tower for removing formaldehyde according to claim 1, characterized in that: The pump assembly (2) comprises a material pump (21), a material injection pipe (22), a material guide pipe (221), a tee (23), a material inlet pipe (24), a material inlet valve (241), a water inlet pipe (25) and a water inlet valve (251); the material pump (21) is arranged outside the tower body (1) and is connected to the material injection pipe (22) and the material guide pipe (221); the material injection pipe (22) is connected to the material inlet pipe (24) and the water inlet pipe (25) through the tee (23); the material inlet pipe (24) is provided with a material inlet valve (241) and the material inlet pipe (24) is connected to an external raw material source; the water inlet pipe (25) is provided with a water inlet valve (251) and the water inlet pipe (25) is connected to an external water source; and the material guide pipe (221) is connected to one end of the feed pipe (11).

4. A dioxolane distillation tower for removing formaldehyde according to claim 1, characterized in that: The liquid equalizing component (3) comprises a liquid equalizing pipe (31) and a liquid equalizing box (32); the liquid equalizing pipe (31) is connected to the other end of the feed pipe (11), and the liquid equalizing pipe (31) is connected to a liquid equalizing box (32) horizontally arranged, and a plurality of liquid drainage holes (321) are arranged at the bottom of the liquid equalizing box (32).

5. A dioxolane distillation tower for removing formaldehyde according to claim 1, characterized in that: The rotary assembly (7) comprises a driving motor (71) and blades (72); the driving motor (71) is arranged at the bottom end outside the tower body (1) and is connected to the blades (72) arranged at the bottom end inside the tower body (1).

6. A dioxolane distillation tower for removing formaldehyde according to claim 1, characterized in that: A pressure pump (8) is installed on the air guide pipe (4).

7. A dioxolane distillation tower for removing formaldehyde according to claim 1, characterized in that: An automatic pressure relief valve (9) is installed on the tower body (1).

8. A dioxolane distillation tower for removing formaldehyde according to claim 1, characterized in that: A hydrophobic membrane (91) is also provided in the tower body (1), and the hydrophobic membrane (91) is located above the liquid equalizing component (3).

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