Rectifying kettle for recovering 1, 4-dichloro-2, 5-dimethoxybenzene

Abstract

The utility model provides a rectifying still for recovering 1, 4-dichloro-2, 5-dimethoxybenzene, which belongs to the technical field of chemical engineering, and comprises a heating device, a rectifying still, a communicating pipe and a distillation cylinder, the rectifying still is connected in the heating device in a sliding manner, the communicating pipe is communicated with the communicating pipe, and the distillation cylinder is communicated with the communicating pipe. The rectifying still and the distillation cylinder are communicated through a communicating pipe, a condensation cylinder is fixedly connected in the distillation cylinder, the inner diameter of the distillation cylinder is larger than the outer diameter of the condensation cylinder, a condensation pipe is fixedly connected to the upper surface of the condensation cylinder in a penetrating mode, and the upper end of the condensation pipe is slidably connected to the upper surface of the distillation cylinder in a penetrating mode; the upper surface of the condensation pipe is fixedly connected with a first ball valve, and the upper surface of the distillation cylinder is fixedly connected with three brackets. By arranging the waste heat recovery device, waste heat generated in the reaction process of the equipment is recycled, so that the greenhouse effect in the atmosphere is reduced while resource waste is prevented, and the effects of energy conservation and emission reduction are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of chemical engineering, and particularly relates to a rectification kettle for recovering 1,4-dichloro-2,5-dimethoxybenzene. Background Technique

[0002] 1,4-Dichloro-2,5-dimethoxybenzene is an organic compound, which may be irritating and toxic to the human body. Appropriate protective measures should be taken when contacting it. Add the mixture containing 1,4-dichloro-2,5-dimethoxybenzene into the rectification kettle, vaporize the material by heating, the vaporized material enters the condenser, is cooled into a liquid, a part of the liquid returns to the rectification kettle as reflux liquid, and the other part is collected as a product. By adjusting parameters such as the reflux ratio, temperature, and pressure, the efficient recovery of 1,4-dichloro-2,5-dimethoxybenzene can be achieved.

[0003] For such chemical products, a large amount of waste heat will be generated during the distillation process, and the waste heat will be volatilized during the condensation process and enter the air, causing the greenhouse effect. Therefore, it is necessary to improve such equipment first. Content of the Utility Model

[0004] The purpose of the utility model is to solve the problems raised in the above background technique, and to provide a rectification kettle for recovering 1,4-dichloro-2,5-dimethoxybenzene.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A rectification kettle for recovering 1,4-dichloro-2,5-dimethoxybenzene, including a heating device, a rectification kettle, a connecting pipe, and a distillation cylinder. The rectification kettle is slidably connected inside the heating device. The rectification kettle and the distillation cylinder are connected through the connecting pipe. A condensation cylinder is fixedly connected inside the distillation cylinder. The inner diameter of the distillation cylinder is larger than the outer diameter of the condensation cylinder. The upper surface of the condensation cylinder is fixedly connected with a condensation pipe through. The upper end of the condensation pipe is slidably connected through the upper surface of the distillation cylinder. The upper surface of the condensation pipe is fixedly connected with a first spherical valve. The upper surface of the distillation cylinder is fixedly connected with three brackets, and the upper surfaces of the three brackets are fixedly connected with a water tank.

[0007] Preferably, a water inlet pipe is fixedly connected through the upper surface of the water tank, and a water outlet pipe is fixedly connected through the lower surface of the water tank. The lower part of the water outlet pipe is fixedly connected to the first spherical valve.

[0008] Preferably, a discharge pipe is fixedly connected through the lower end of the outer circumferential surface of the distillation cylinder, and the outer end of the discharge pipe is fixedly connected with a second spherical valve.

[0009] Preferably, a condensation discharge pipe is fixedly connected through the lower surface of the condensation cylinder, and a third spherical valve is fixedly connected to the lower end of the condensation discharge pipe.

[0010] Preferably, a feed pipe is fixedly connected through the upper end of the annular side surface of the rectification kettle.

[0011] Preferably, a plurality of first support columns are fixedly connected to the lower surface of the heating device, and a plurality of second support columns are fixedly connected to the lower surface of the distillation cylinder.

[0012] Compared with the prior art, the present utility model has the following advantages:

[0013] By setting up a waste heat recovery device, the present utility model recovers and utilizes the waste heat generated during the reaction of the equipment, preventing waste of resources and reducing the greenhouse effect in the atmosphere, so as to achieve the effect of energy conservation and emission reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 FIG. is a schematic structural diagram of a rectification kettle for recovering 1,4-dichloro-2,5-dimethoxybenzene proposed by the present utility model;

[0015] Figure 2 FIG. is a schematic sectional structural diagram of a rectification kettle for recovering 1,4-dichloro-2,5-dimethoxybenzene proposed by the present utility model;

[0016] Figure 3 FIG. is a schematic sectional structural diagram of a condensation device of a rectification kettle for recovering 1,4-dichloro-2,5-dimethoxybenzene proposed by the present utility model.

[0017] In the figure: 1 heating device, 2 rectification kettle, 3 first support column, 4 feed pipe, 5 connecting pipe, 6 distillation cylinder, 7 support, 8 water tank, 9 water inlet pipe, 10 discharge pipe, 11 second support column, 12 condensation cylinder, 13 second spherical valve, 14 condensation pipe, 15 first spherical valve, 16 condensation discharge pipe, 17 third spherical valve, 18 water outlet pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The technical solutions in the present utility model will be further described below with reference to the drawings and embodiments.

[0019] Refer to Figures 1-3, a rectification kettle for recycling 1,4-dichloro-2,5-dimethoxybenzene, comprising a heating device 1, a rectification kettle 2, a connecting pipe 5 and a distillation cylinder 6. The upper end of the annular side of the rectification kettle 2 is fixedly connected through penetration with a feed pipe 4. The rectification kettle 2 is slidably connected within the heating device 1. The rectification kettle 2 and the distillation cylinder 6 are connected through the connecting pipe 5. A condensation cylinder 12 is fixedly connected within the distillation cylinder 6. The inner diameter of the distillation cylinder 6 is greater than the outer diameter of the condensation cylinder 12, so as to form a closed space between the distillation cylinder 6 and the condensation cylinder 12. The upper surface of the distillation cylinder 6 is fixedly connected with three supports 7. The upper surfaces of the three supports 7 are fixedly connected with a water tank 8. The upper surface of the water tank 8 is fixedly connected through penetration with a water inlet pipe 9. The lower surface of the water tank 8 is fixedly connected through penetration with a water outlet pipe 18. The lower part of the water outlet pipe 18 is fixedly connected to a first ball valve 15. Through the first ball valve 15, the water in the water tank can enter the condensation cylinder 6.

[0020] The upper surface of the condensation cylinder 12 is fixedly connected through penetration with a condensation pipe 14. The upper end of the condensation pipe 14 is slidably connected through penetration with the upper surface of the distillation cylinder 6. The upper surface of the condensation pipe 14 is fixedly connected with a first ball valve 15. The lower end of the annular outer surface of the distillation cylinder 6 is fixedly connected through penetration with a discharge pipe 10. The outer end of the discharge pipe 10 is fixedly connected with a second ball valve 13. When the distilled water generated after the steam is condensed by the condensation device is discharged through the second ball valve 13, the lower surface of the condensation cylinder 12 is fixedly connected through penetration with a condensation discharge pipe 16. The lower end of the condensation discharge pipe 16 is fixedly connected with a third ball valve 17. The condensation cylinder 12 is heated by steam and finally discharged through the third ball valve 17. By setting a waste heat recovery device, the waste heat generated during the reaction of the equipment is recovered and utilized, preventing resource waste and reducing the greenhouse effect in the atmosphere at the same time, so as to achieve the effect of energy conservation and emission reduction.

[0021] The functional principle of the present utility model can be elaborated through the following operation mode:

[0022] When a mixture containing 1,4-dichloro-2,5-dimethoxybenzene is added to the rectification kettle, it is heated by the heating device 1. The material is vaporized by heating. The vaporized material enters the condenser and is cooled into a liquid. Part of the liquid returns to the rectification kettle as reflux liquid, and the other part is collected as a product. The heat generated during vaporization will enter the distillation cylinder 6 in the form of steam through the connecting pipe 5. Under the condensation effect of the condensation cylinder 12, the heat will be converted. The vaporized steam will be converted into a liquid. The converted liquid can be discharged through the second ball valve 13 for people to use and collect. At the same time, the waste heat of the gas will heat the liquid in the condensation cylinder 12. The heated liquid can be discharged through the third ball valve 17 for people to use. By setting a waste heat recovery device, the waste heat generated during the reaction of the equipment is recovered and utilized, preventing resource waste and reducing the greenhouse effect in the atmosphere at the same time, so as to achieve the effect of energy conservation and emission reduction.

[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A rectifying still for recovering 1,4-dichloro-2,5-dimethoxybenzene, comprising a heating device (1), a rectifying still (2), a connecting pipe (5) and a distillation cylinder (6), characterized in that, The rectifying kettle (2) is slidably connected inside the heating device (1). The rectifying kettle (2) and the distillation cylinder (6) are connected through a communicating pipe (5). A condensing cylinder (12) is fixedly connected inside the distillation cylinder (6). The inner diameter of the distillation cylinder (6) is larger than the outer diameter of the condensing cylinder (12). The upper surface of the condensing cylinder (12) is fixedly connected through a condensing pipe (14). The upper end of the condensing pipe (14) is slidably connected through the upper surface of the distillation cylinder (6). A first ball valve (15) is fixedly connected to the upper surface of the condensing pipe (14). Three supports (7) are fixedly connected to the upper surface of the distillation cylinder (6). A water tank (8) is fixedly connected to the upper surfaces of the three supports (7).

2. The rectifying still for recovering 1,4-dichloro-2,5-dimethoxybenzene according to claim 1, wherein, A water inlet pipe (9) is fixedly connected through the upper surface of the water tank (8). A water outlet pipe (18) is fixedly connected through the lower surface of the water tank (8). The lower part of the water outlet pipe (18) is fixedly connected to the first ball valve (15).

3. A rectifying still for recovering 1,4-dichloro-2,5-dimethoxybenzene according to claim 1, wherein, A discharge pipe (10) is fixedly connected through the lower end of the outer circumferential surface of the distillation cylinder (6). A second ball valve (13) is fixedly connected to the outer end of the discharge pipe (10).

4. A rectifying still for recovering 1,4-dichloro-2,5-dimethoxybenzene according to claim 1, characterized in that, A condensing discharge pipe (16) is fixedly connected through the lower surface of the condensing cylinder (12). A third ball valve (17) is fixedly connected to the lower end of the condensing discharge pipe (16).

5. A rectifying still for recovering 1,4-dichloro-2,5-dimethoxybenzene according to claim 1, characterized in that, A feed pipe (4) is fixedly connected through the upper end of the circumferential side surface of the rectifying kettle (2).

6. The rectifying still for recovering 1,4-dichloro-2,5-dimethoxybenzene according to claim 1, wherein Multiple first support columns (3) are fixedly connected to the lower surface of the heating device (1). Multiple second support columns (11) are fixedly connected to the lower surface of the distillation cylinder (6).

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