Dioxolame rectification device for efficiently removing heavy metal ions

Abstract

A dioxolame rectification device capable of efficiently removing heavy metal ions comprises a tower body, a tower base is arranged at the bottom of the tower body, a feeding port is formed in one side of the tower body, and a heavy metal ion discharging port is formed in the bottom of the tower body; the feeding hole is communicated with a feeding pipe, a spraying disc is mounted at the lower end of the feeding pipe, and the spraying disc is fixed with the tower body through a height adjusting mechanism; a condenser is arranged at the upper end of one side of the tower body, and a dioxolame discharge port is formed in the lower end of the condenser; and a reboiler is arranged at the lower end of one side of the tower body. The spraying disc is designed, so that liquid in the spraying disc can be uniformly sprayed, the feeding distribution is more uniform, and the rectification effect is improved; meanwhile, the spraying disc can be adjusted through the height adjusting mechanism and can be adjusted according to actual requirements, so that the optimal spraying effect is achieved. According to the device disclosed by the utility model, effective separation of dioxolame and heavy metal ions in a mixture and purification of dioxolame can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of distillation devices, in particular to a dioxolane distillation device for efficiently removing heavy metal ions. Background Art

[0002] Dioxolane, also known as 1,3-dioxolane (DOL), is an organic compound with the chemical formula C5H8O2. It is a five-membered ring structure containing two oxygen atoms. This compound is a water-white liquid in appearance, soluble in water and ethanol, and is widely used in the fields of organic synthesis and drug synthesis.

[0003] In order to obtain dioxolane with higher purity, a distillation device is required to remove impurities therein. The different volatilities of the components in the mixture are mainly utilized to separate the components through heating, vaporization, condensation and other steps. Chinese patent CN213492064U discloses a utility model patent of "an equal partition plate distillation tower for dioxolane purification". In this patent, each feed pipe (7) is located at the top of the inclined equal partition plate (2), which will lead to uneven distribution during feeding, thereby affecting the distillation effect. This is a shortcoming of the prior art. Utility Model Content

[0004] The purpose of the utility model is to solve the problems raised in the above background technology, and then propose a dioxolane distillation device for efficiently removing heavy metal ions.

[0005] The technical solution adopted by the utility model to solve the technical problem is: a dioxolane distillation device for efficiently removing heavy metal ions, comprising a tower body, a tower base is arranged at the bottom of the tower body, a feed inlet is arranged at one side of the tower body, and a heavy metal ion discharge port is arranged at the bottom of the tower body; the feed inlet is connected with a feed pipe, a spray plate is installed at the lower end of the feed pipe, and the spray plate is fixed to the tower body through a height adjustment mechanism; a condenser is arranged at the upper end of one side of the tower body, and a dioxolane discharge port is arranged at the lower end of the condenser; a reboiler is arranged at the lower end of one side of the tower body.

[0006] A further improvement of the utility model is that the height adjustment mechanism includes a horizontally arranged support rod, an outer sleeve is vertically installed on the support rod, an inner sleeve is arranged inside the outer sleeve, and the inner sleeve is fixedly connected to the feed pipe; a locking screw for positioning the inner sleeve is arranged on the outer sleeve.

[0007] A further improvement of the utility model is that mounting plates are respectively provided at both ends of the support rod, a connecting plate is provided on the inner wall of the tower body, and the mounting plate is fixedly connected to the connecting rod by bolts.

[0008] A further improvement of the utility model is that a first reflux pipe is provided at the lower end of the condenser, and the first reflux pipe is connected to the tower body.

[0009] A further improvement of the utility model is that a second reflux pipe is arranged at the lower end of the reboiler, and the second reflux pipe is connected to the tower body.

[0010] A further improvement of the utility model is that an inspection port is arranged at the lower end of the tower body.

[0011] A further improvement of the utility model is that a pressure sensor is arranged in the tower body, and an output end of the pressure sensor is electrically connected to an input end of the PLC controller.

[0012] A further improvement of the utility model is that a plurality of through holes are arranged on the spraying disc.

[0013] The beneficial effects of the utility model are as follows: the position and structural design of the spray plate of the utility model enable the liquid in the spray plate to be sprayed evenly, making the feed distribution more even, thereby improving the distillation effect; at the same time, the spray plate in the utility model can be adjusted by a height adjustment mechanism, and can be adjusted according to actual needs to achieve the best spraying effect. The utility model condenses the dioxolane vapor evaporated from the top of the tower through a condenser, and collects it through the dioxolane discharge port, which can achieve effective separation of dioxolane and heavy metal ions in the mixture and purification of dioxolane. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of a specific implementation method of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the connection between the outer sleeve and the inner sleeve of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the bottom of the spray plate of the utility model;

[0017] Figure 4 for Figure 1 A magnified view of the structure at center;

[0018] Figure 5 for Figure 1 Enlarged view of the structure at point B in the middle.

[0019] In the figure, 1 is a tower body, 11 is a feed port, 12 is a heavy metal ion discharge port, 2 is a tower base, 3 is a feed pipe, 4 is a spray plate, 41 is a through hole, 42 is a liquid discharge hole, 5 is a height adjustment mechanism, 51 is an outer sleeve, 52 is an inner sleeve, 53 is a locking screw, 54 is a support rod, 55 is a connecting plate, 56 is a mounting plate, 57 is a bolt, 6 is a condenser, 61 is a dioxolane discharge port, 62 is a first reflux pipe, 7 is a reboiler, 71 is a second reflux pipe, 8 is an inspection port, and 9 is a pressure sensor. DETAILED DESCRIPTION

[0020] 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:

[0021] like Figure 1-5 As shown, a dioxolane distillation device for efficiently removing heavy metal ions comprises a tower body 1, a tower base 2 is arranged at the bottom of the tower body 1, a feed inlet 11 is arranged on one side of the tower body 1 for introducing a dioxolane mixture to be treated, and a heavy metal ion discharge port 12 is arranged at the bottom of the tower body 1 for collecting and discharging a heavy metal ion solution separated after treatment.

[0022] Furthermore, the feed port 11 is connected to the feed pipe 3, and a spray disc 4 is installed at the lower end of the feed pipe 3, and its function is to evenly spray the mixture on the filler in the tower body 1, thereby increasing the contact area between the mixture and the filler and improving the separation efficiency; the spray disc 4 is fixed to the tower body 1 by a height adjustment mechanism 5, so that the height of the spray disc 4 can be adjusted according to actual needs to achieve the best spraying effect.

[0023] Furthermore, a condenser 6 is provided at the upper end of one side of the tower body 1 for condensing the dioxolane vapor evaporated from the tower top, and a dioxolane discharge port 61 is provided at the lower end of the condenser 6 for collecting and discharging the condensed dioxolane liquid. A reboiler 7 is provided at the lower end of one side of the tower body 1 for heating the liquid at the bottom of the tower, so that the dioxolane gas is vaporized and flows upward, thereby forming a countercurrent contact with the falling liquid, improving the separation effect, and the heavy metal ions that are not vaporized are left at the bottom of the tower. A first reflux pipe 62 is provided at the lower end of the condenser 6, and the first reflux pipe 62 is connected to the tower body 1, and is used to reflux the dioxolane liquid condensed in the condenser 6 to the top of the tower to maintain the liquid phase concentration and temperature gradient in the tower; a second reflux pipe 71 is provided at the lower end of the reboiler 7, and the second reflux pipe 71 is connected to the tower body 1, and is used to introduce the dioxolane vapor generated in the reboiler 7 into the lower part of the tower body 1, and further to form a countercurrent contact with the falling liquid.

[0024] Specifically, in order to allow the dioxolane vapor to flow upward smoothly, the utility model provides a plurality of through holes 41 on the spray plate 4 , and also provides a liquid outlet hole 42 on the spray plate, through which the solution flows out.

[0025] The height adjustment mechanism 5 comprises a horizontally arranged support rod 54, on which an outer sleeve 51 is vertically mounted, and an inner sleeve 52 is arranged inside the outer sleeve 51, and the inner sleeve 52 is fixedly connected to the feed pipe 3; a locking screw 53 for positioning the inner sleeve 52 is arranged on the outer sleeve 51. By adjusting the telescopic length of the inner sleeve 52 in the outer sleeve 51, the height of the spraying disc 4 can be adjusted; in order to fix the position of the inner sleeve 52, a locking screw 53 is also arranged on the outer sleeve 51 for positioning the inner sleeve 52.

[0026] Furthermore, mounting plates 56 are respectively provided at both ends of the support rod 54 , and a connecting plate 55 is provided on the inner wall of the tower body 1 . The mounting plate 56 is fixedly connected to the connecting rod by bolts 57 , so that the entire height adjustment mechanism 5 is stably mounted on the tower body 1 .

[0027] In order to facilitate the inspection and maintenance of the components inside the tower body 1, an inspection port 8 is provided at the lower end of the tower body 1. The design of the inspection port 8 allows the staff to easily enter the tower body 1 to inspect, repair or replace the spray disc 4, filler and other components.

[0028] In order to monitor the pressure changes inside the tower body 1 in real time and ensure the safe operation of the device, a pressure sensor 9 is provided in the tower body 1, and the output end of the pressure sensor 9 is electrically connected to the input end of the PLC controller. The PLC controller can monitor and adjust the operating state of the device according to the real-time collected pressure data.

[0029] The dioxolane mixture is sprayed into the tower body 1 through the feed pipe 3 and the spray plate 4, achieving uniform feeding; the dioxolane liquid at the bottom is evaporated by heating, so that the lighter component (dioxolane) will be evaporated into gas and rise to the top of the tower, and the heavier component (metal ion) remains in the mother liquor, achieving the separation of dioxolane and heavy metals. These dioxolane gases then enter the condenser 6, which condenses into a high-purity dioxolane liquid by lowering the temperature of the gas. The condensed dioxolane liquid is collected through the dioxolane discharge port 61 at the lower end of the condenser 6.

[0030] In addition, in order to ensure the stability of the pressure and temperature in the tower body 1, part of the condensed dioxolane liquid may be refluxed to the top of the tower through the first reflux pipe 62 to maintain the liquid phase concentration and temperature gradient in the tower. This can not only improve the separation efficiency, but also prevent the temperature at the top of the tower body 1 from being too high or the pressure from fluctuating.

[0031] 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 device for efficiently removing heavy metal ions, characterized in that: It includes a tower body, a tower base is arranged at the bottom of the tower body, a feed inlet is arranged on one side of the tower body, and a heavy metal ion discharge port is arranged at the bottom of the tower body; the feed inlet is connected with a feed pipe, a spray plate is installed at the lower end of the feed pipe, and the spray plate is fixed to the tower body through a height adjustment mechanism; a condenser is arranged at the upper end of one side of the tower body, and a dioxolane discharge port is arranged at the lower end of the condenser; a reboiler is arranged at the lower end of one side of the tower body.

2. The dioxolane distillation device for efficiently removing heavy metal ions according to claim 1, characterized in that: The height adjustment mechanism includes a horizontally arranged support rod, an outer sleeve is vertically installed on the support rod, an inner sleeve is arranged inside the outer sleeve, and the inner sleeve is fixedly connected to the feed pipe; a locking screw for positioning the inner sleeve is arranged on the outer sleeve.

3. The dioxolane distillation device for efficiently removing heavy metal ions according to claim 2, characterized in that: Both ends of the support rod are respectively provided with mounting plates, the inner wall of the tower body is provided with a connecting plate, and the mounting plate is fixedly connected to the connecting rod by bolts.

4. The dioxolane distillation device for efficiently removing heavy metal ions according to any one of claims 1 to 3, characterized in that A first reflux pipe is provided at the lower end of the condenser, and the first reflux pipe is connected to the tower body.

5. The dioxolane distillation device for efficiently removing heavy metal ions according to claim 4, characterized in that A second reflux pipe is provided at the lower end of the reboiler, and the second reflux pipe is connected to the tower body.

6. The dioxolane distillation device for efficiently removing heavy metal ions according to claim 1, characterized in that A maintenance opening is provided at the lower end of the tower body.

7. The dioxolane distillation device for efficiently removing heavy metal ions according to claim 1, characterized in that A pressure sensor is arranged in the tower body, and the output end of the pressure sensor is electrically connected to the input end of the PLC controller.

8. The dioxolane distillation device for efficiently removing heavy metal ions according to claim 1, characterized in that , the spray plate is provided with a plurality of through holes.

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