Novel toluene recovery device with automatic feeding function

Abstract

The utility model discloses a novel toluene recovery device with an automatic feeding function, which comprises a tank body, a heater and a circulating pump, the tank body is communicated with a feed pipe and a discharge pipe, the upper side of the tank body is communicated with a steam discharge pipe and a temperature sensor, the temperature sensor is electrically connected with a controller, the steam discharge pipe is communicated with an inlet of a condenser, and the steam discharge pipe is communicated with an outlet of the condenser. An outlet of the condenser is communicated with the air purifier, the discharging pipe is communicated with one end of a circulating pipe provided with a circulating pump, the other end of the circulating pipe is communicated with an inlet of the heater, an outlet of the heater is communicated with the tank body, a discharging pipe is arranged on the circulating pipe, a liquid level sensor and a breather valve are arranged on the tank body, and the liquid level sensor and the circulating pump are electrically connected with the controller. A feeding pump is arranged on the feeding pipe and is electrically connected with the controller; the heating device and the circulating pipeline are arranged on the outer side of the tank body, and the liquid level sensor is additionally arranged, so that the heating device is convenient to maintain, automatic feeding can be performed according to the height of the liquid level in the tank body, and the labor intensity of personnel is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of toluene recovery, in particular to a novel toluene recovery device with an automatic feeding function. Background Art

[0002] During the production of sodium saccharin, the generated materials contain a large amount of toluene. Due to the large production volume, failure to recycle the toluene will result in waste and increase the company's costs. Therefore, it is necessary to recycle the toluene. In the prior art, distillation is generally used to recycle the toluene. The waste material is heated to generate toluene vapor, and the vapor is condensed in a cooler to form a toluene solution, thereby completing the extraction of toluene from the solution. However, the prior art is to set a heating device in the tank to heat the material in the tank. However, if the heating device fails, all the material in the tank needs to be discharged and the tank needs to be opened, which is cumbersome to operate. At the same time, in the existing recovery process, the solution in the tank needs to be added regularly by personnel, which increases the labor intensity of personnel. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a new toluene recovery device with automatic feeding function. By changing the position of the heater and adding a liquid level sensor on the basis of the existing recovery device, the problem of troublesome operation when the heater fails and increased labor intensity of personnel adding materials regularly is solved.

[0004] In order to solve the above technical problems, the utility model provides a technical solution: a new toluene recovery device with automatic feeding function, including a tank body, a heater and a circulation pump, the tank body is connected with a feed pipe and a discharge pipe, the upper side of the tank body is connected with a steam exhaust pipe and a temperature sensor, the temperature sensor is electrically connected to the controller, the steam exhaust pipe is connected with the inlet of the condenser, and the outlet of the condenser is connected with the air purifier, which is characterized in that: the discharge pipe is connected with one end of a circulation pipe provided with a circulation pump, the other end of the circulation pipe is connected with the inlet of the heater, the outlet of the heater is connected with the tank body, the circulation pipe is connected with a discharge pipe provided with a discharge valve through a tee, a liquid level sensor and a breathing valve are provided on the upper side of the tank body, the liquid level sensor and the circulation pump are electrically connected to the controller, a feed pump is provided on the feed pipe, and the feed pump is electrically connected to the controller.

[0005] Furthermore, the outer sides of the tank body, heater, circulation pipe and steam exhaust pipe are wrapped with a thermal insulation layer.

[0006] Furthermore, the heater is a steam heater or an electric heater.

[0007] The beneficial effects of the utility model are:

[0008] This application improves on the existing recovery device by adjusting the position of the heating device and adding a circulation pipeline and a liquid level sensor. It facilitates the maintenance of the heating device and can also automatically add materials according to the height of the liquid level in the tank, reducing labor intensity.

[0009] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only three of the drawings in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0011] Figure 1 This is a schematic diagram of the structure of this application.

[0012] In the figure, 1-tank body, 2-heater, 3-circulation pump, 4-feed pipe, 5-discharge pipe, 6-steam discharge pipe, 7-temperature sensor, 8-controller, 9-condenser, 10-air purifier, 11-discharge valve, 12-discharge pipe, 13-liquid level sensor, 14-breathing valve, 15-liquid discharge port, 16-feed pump. DETAILED DESCRIPTION

[0013] The following describes embodiments of the present invention in detail with reference to the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the accompanying drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0014] It should be understood that the steps described in the method embodiments of the present invention may be performed in a different order. Furthermore, the method embodiments may include additional steps or omit the steps shown. The scope of the present invention is not limited in this respect.

[0015] The names of the messages or information exchanged between multiple devices in the embodiments of the present invention are only used for illustrative purposes and are not used to limit the scope of these messages or information. Example 1

[0016] like Figure 1As shown, a new toluene recovery device with automatic feeding function includes a tank body 1, a heater 2 and a circulating pump 3. The tank body 1 is connected with a feed pipe 4 and a discharge pipe 5. The upper side of the tank body 1 is connected with a steam exhaust pipe 6 and a temperature sensor 7. The temperature sensor 7 is electrically connected to the controller 8. The steam exhaust pipe 6 is connected with the inlet of the condenser 9, and the outlet of the condenser 9 is connected with the air purifier 10. The discharge pipe 5 is connected with one end of the circulation pipe provided with the circulation pump 3, and the other end of the circulation pipe is connected with the inlet of the heater 2. The outlet of the heater 2 is connected with the tank body 1. The heater 2 is located outside the tank body 1 and operates independently, which is convenient for operation after a failure of the heater 2. The circulation pipe is connected with a discharge pipe 12 provided with a discharge valve 11 through a tee. A liquid level sensor 13 and a breathing valve 14 are provided on the upper side of the tank body 1. The liquid level sensor 13 and the circulating pump 3 are electrically connected to the controller 8. A feed pump 16 is provided on the feed pipe 4, and the feed pump 16 is electrically connected to the controller 8.

[0017] The heater 2 is a steam heater or an electric heater; preferably a steam heater, which can be directly connected to the steam pipe in the workshop. Example 2

[0018] like Figure 1 As shown, this embodiment is obtained by adding technical features such as a camera 15 and an intercom 17 on the basis of the embodiment one. The remaining technical features are the same as those of the embodiment one, and the similarities are not repeated here. Among them, the difference between this embodiment and the embodiment one is that the outer side of the tank body 1, the heater 2, the circulation pipe and the steam exhaust pipe 6 are wrapped with an insulation layer.

[0019] In this embodiment, since the circulation pipe and heater 2 are arranged on the outside of the tank body 1, the heating heat loss rate is higher than when the heater 2 is arranged inside the tank body 1. Therefore, an insulation layer is added to minimize heat loss and improve the heating efficiency compared to not wrapping the insulation layer.

[0020] The process of using the technical solution formed by the above embodiments is as follows:

[0021] The heating temperature and the upper limit, lower limit and working value of the liquid level are set by the controller 8. The liquid level sensor 13 detects the liquid level height in the tank body 1. If the liquid level height is less than the lower limit of the liquid level, a start signal is sent to the feed pump 16. The feed pump 16 works to pump the material into the tank body 1. If the liquid level height is greater than the liquid level working value, a start signal is sent to the circulation pump 3. The circulation pump 3 works to pump the material into the heater 2 for heating, and then returns to the tank body 1 to realize the circulating heating of the material in the tank body 1. If the liquid level height is greater than the upper limit of the liquid level, a stop signal is sent to the feed pump 16. The feed pump 16 stops working. The heated material evaporates in the tank body 1 to form steam. The steam enters the condenser 9 from the steam discharge pipe 6. After condensation, it is discharged from the liquid discharge port 15 of the condenser 9 into the toluene storage tank; when the toluene content of the material in the tank body 1 is too low, the discharge valve 11 is opened to discharge the material in the tank body 1 through the discharge pipe 12.

[0022] The controller can be any mature industrial computer in the existing technology, and can be electrically connected to the circulation pump 3, feed pump 16, temperature sensor 7, and liquid level sensor 13 according to the instructions; at the same time, the circulation pump 3, feed pump 16, temperature sensor 7, and liquid level sensor 13 can also be commonly used models in the existing technology; the comparison of the liquid level with the set threshold and the generation of the control signal according to the comparison result belong to the existing technology and will not be repeated here.

[0023] Note that the above are merely preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions are readily apparent to those skilled in the art without departing from the scope of protection of the present invention. Therefore, while the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the scope of the present invention. The scope of the present invention is determined by the appended claims.

Claims

1. A novel toluene recovery device with automatic feeding function, comprising a tank body, a heater and a circulation pump, wherein the tank body is connected to a feed pipe and a discharge pipe, the upper side of the tank body is connected to a steam discharge pipe and a temperature sensor, the temperature sensor is electrically connected to a controller, the steam discharge pipe is connected to the inlet of a condenser, and the outlet of the condenser is connected to an air purifier, characterized in that: The discharge pipe is connected to one end of a circulation pipe provided with a circulation pump, the other end of the circulation pipe is connected to the inlet of the heater, the outlet of the heater is connected to the tank body, the circulation pipe is connected to a discharge pipe provided with a discharge valve through a tee, a liquid level sensor and a breathing valve are provided on the upper side of the tank body, the liquid level sensor and the circulation pump are electrically connected to the controller, a feed pump is provided on the feed pipe, and the feed pump is electrically connected to the controller.

2. A novel toluene recovery device with automatic feeding function according to claim 1, characterized in that: The outer sides of the tank body, heater, circulation pipe and steam exhaust pipe are wrapped with a heat-insulating layer.

3. A novel toluene recovery device with automatic feeding function according to claim 2, characterized in that: The heater is a steam heater or an electric heater.

Images