Dehydration treatment device for organic recovery solvent

Abstract

The utility model provides a dehydration treatment device for an organic recovery solvent. A feeding pipe at the lower part of each adsorption tank is connected with a main feeding pipe through a first three-way electromagnetic valve; a discharge pipe at the upper part of each adsorption tank is respectively connected with a main discharge pipe and a return pipe through a second three-way electromagnetic valve, and the return pipe is connected with a feed pipe of the other adsorption tank through a third three-way electromagnetic valve; the air inlet pipe at the lower part of each adsorption tank is connected with a main air inlet pipe with a heater through a first electromagnetic valve; and the air outlet pipe at the upper part of each adsorption tank is connected with a main air outlet pipe with a fan and a condenser through a second electromagnetic valve. After one adsorption tank reaches a saturated state, the other adsorption tank is started to continue dehydration treatment, and the adsorption tank is heated and dried to wait for next cycle use, so that continuous and efficient operation of the adsorption tanks is ensured; and the undehydrated organic solvent remained in the adsorption tank is fed into the other adsorption tank for dehydration treatment, so that the waste of the organic solvent is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of organic solvent treatment, and more specifically, to a dehydration treatment device for recycled organic solvents. Background Art

[0002] The used organic solvents, especially the solvents slightly soluble in water, need to be further processed before they can be used in production again after being recycled; for example, the water content of recycled ethyl acetate is about 3-6%. The existing treatment methods are mainly distillation or dehydration separation using a rotating bed. These two methods have problems such as large equipment investment and high requirements for the height of the equipment installation site. At the same time, the daily processing capacity is also small, making it difficult to meet the production demand. Summary of the Utility Model

[0003] In order to solve the deficiencies of the above-mentioned prior art, the purpose of the present utility model is to provide a dehydration treatment device for recycled organic solvents to overcome the defects in the prior art.

[0004] To achieve the above purpose, the present utility model provides a dehydration treatment device for recycled organic solvents, which includes a plurality of adsorption tanks and a control terminal. An adsorbent layer is provided inside each adsorption tank; a feed pipe is provided at the lower part of each adsorption tank, and the feed pipe is connected to the main feed pipe through a first three-way solenoid valve. The main feed pipe is connected to the solvent tank through a feed pump, so that by controlling the opening and closing of the first three-way solenoid valve through the control terminal, the organic solvent to be treated is pumped into the corresponding adsorption tank by the feed pump; a discharge pipe is provided at the upper part of each adsorption tank, and the discharge pipe is respectively connected to the main discharge pipe and the return pipe through a second three-way solenoid valve. The main discharge pipe is connected to the collection tank through a discharge pump, and the return pipe is connected to the feed pipe of another adsorption tank through a third three-way solenoid valve, so that by controlling the opening and closing of the second three-way solenoid valve and the third three-way solenoid valve through the control terminal, the dehydrated organic solvent is pumped into the collection tank, or sent to another adsorption tank for secondary dehydration treatment; an air inlet pipe is provided at the lower part of each adsorption tank, and the air inlet pipe is connected to the main air inlet pipe through a first solenoid valve. A heater is provided on the main air inlet pipe, so that by controlling the opening and closing of the first solenoid valve through the control terminal, the introduced gas is heated and then sent into the corresponding adsorption tank for heating and drying treatment of the inside of the adsorption tank; an air outlet pipe is provided at the upper part of each adsorption tank, and the air outlet pipe is connected to the main air outlet pipe through a second solenoid valve. The main air outlet pipe is connected to a condenser through a blower, so that by controlling the opening and closing of the second solenoid valve through the control terminal, the discharged moisture is condensed and collected.

[0005] Through the above technical solution, a first three-way solenoid valve and a second three-way solenoid valve are provided for each adsorption tank to control the selection of untreated organic solvents to enter a certain adsorption tank, and to control the pumping of the treated organic solvents into the collection tank. After the adsorbent layer in one adsorption tank is saturated, another adsorption tank is enabled to continue the dehydration treatment, and the adsorption tank is heated and dried to wait for the next cycle of use, ensuring the continuous and efficient operation of the adsorption tank and meeting the production requirements; a second three-way solenoid valve and a third three-way solenoid valve are provided for each adsorption tank, and the discharge pipe of one adsorption tank is connected to the feed pipe of another adsorption tank through a return pipe, so that the organic solvents that cannot be absorbed by the adsorbent layer in the previously enabled adsorption tank can be sent into another adsorption tank for continuous dehydration treatment, improving the dehydration treatment efficiency of the device and avoiding the waste of organic solvents.

[0006] As a further description of the dehydration treatment device for the organic recycled solvent described in the present invention, preferably, the control end is provided with a controller module and a feed control module; the controller module is electrically connected and signal-connected to the feed control module, and the feed control module is respectively electrically connected and signal-connected to the first three-way solenoid valve and the feed pump, so that the controller module inputs a dehydration start signal to the feed control module, and the feed control module controls the first three-way solenoid valve to connect the solvent tank to the feed pipe of one adsorption tank and controls the feed pump to start; the controller module inputs an adsorption saturation signal to the feed control module, and the feed control module controls the first three-way solenoid valve to connect the solvent tank to the feed pipe of another adsorption tank.

[0007] Through the above technical solution, the state of each adsorption tank is monitored by the controller module, and the first three-way solenoid valve and the feed pump are controlled by the feed control module. A first three-way solenoid valve is provided for each adsorption tank to realize the control of enabling the adsorption tank and the control of introducing the organic solvents to be treated, ensuring the efficient operation of the adsorption tank.

[0008] As a further description of the dehydration treatment device for the organic recycled solvent described in the present invention, preferably, the control end is provided with a controller module and a discharge control module; the controller module is electrically connected and signal-connected to the discharge control module, and the discharge control module is electrically connected and signal-connected to the second three-way solenoid valve, so that the controller module inputs a dehydration start signal to the discharge control module, and the discharge control module controls the second three-way solenoid valve to connect the discharge pipe of one adsorption tank to the collection tank; the controller module inputs an adsorption saturation signal to the discharge control module, and the discharge control module controls the second three-way solenoid valve to connect the discharge pipe of another adsorption tank to the collection tank.

[0009] Through the above technical solution, the controller module monitors the state of each adsorption tank, and the discharge control module controls the second three-way solenoid valve. Each adsorption tank is correspondingly provided with a second three-way solenoid valve, so as to control the pumping of the treated organic solvent from the enabled adsorption tank to the collection tank, ensuring the efficient operation of the adsorption tank.

[0010] As a further description of the dehydration treatment device for the organic solvent recovered by the present utility model, preferably, the control end is provided with a controller module and a saturation state control module; the controller module is electrically connected and signal-connected to the saturation state control module, and the saturation state control module is respectively electrically connected and signal-connected to the second three-way solenoid valve and the third three-way solenoid valve; so that the controller module inputs an adsorption saturation signal to the saturation state control module, and the saturation state control module controls the second three-way solenoid valve and the third three-way solenoid valve to connect the discharge pipe of one adsorption tank to the feed pipe of another adsorption tank through the return pipe.

[0011] Through the above technical solution, the controller module monitors the state of each adsorption tank, and the saturation state control module controls the second three-way solenoid valve and the third three-way solenoid valve. Each adsorption tank is correspondingly provided with a second three-way solenoid valve, and a third three-way solenoid valve is arranged between two adsorption tanks, so as to control the pumping of the untreated organic solvent in the adsorption tank to another adsorption tank when the adsorption tank reaches the saturation state, ensuring the efficient operation of the adsorption tank.

[0012] As a further description of the dehydration treatment device for the organic solvent recovered by the present utility model, preferably, a first moisture sensor is provided on the discharge pipe for detecting whether the moisture content of the recovered organic solvent is higher than the reuse standard; the first moisture sensor is electrically connected and signal-connected to the controller module, so that when the first moisture sensor detects that the moisture content of the organic solvent is higher than the moisture content value of the reuse standard, the controller module receives the moisture content value of the first moisture sensor and generates an adsorption saturation signal.

[0013] Through the above technical solution, by providing a first moisture sensor on the discharge pipe of each adsorption tank, it is realized to monitor whether the adsorbent layer in the adsorption tank reaches the saturation state. When the saturation state is reached, another adsorption tank can be enabled in time to continue the dehydration treatment, improving the dehydration treatment efficiency of the device and avoiding the unusability of the collected organic solvent.

[0014] As a further description of the dehydration treatment device for the organic recycling solvent described in the present utility model, preferably, the control end is provided with a controller module and an air intake control module; the controller module is electrically connected and signal-connected to the air intake control module, and the air intake control module is respectively electrically connected and signal-connected to the first solenoid valve and the second solenoid valve; so that the controller module inputs an adsorption saturation signal to the air intake control module, and the air intake control module controls the first solenoid valve to connect the air inlet pipe of one adsorption tank to the total air inlet pipe, and controls the second solenoid valve to connect the air outlet pipe of one adsorption tank to the total air outlet pipe.

[0015] Through the above technical solution, the controller module monitors the state of each adsorption tank, and the air intake control module controls the opening and closing of the first solenoid valve and the second solenoid valve. Each adsorption tank is correspondingly provided with a first solenoid valve and a second solenoid valve. After reaching the saturation state in one adsorption tank, the first solenoid valve and the second solenoid valve are opened to provide a gas circulation path for heating and drying the gas introduced into the adsorption tank. After the heating and drying treatment of one adsorption tank is completed, the first solenoid valve and the second solenoid valve are closed to ensure the environment for dehydrating the organic solvent in the adsorption tank.

[0016] As a further description of the dehydration treatment device for the organic recycling solvent described in the present utility model, preferably, the control end is provided with an air outlet control module; the air intake control module is electrically connected and signal-connected to the air outlet control module, and the air outlet control module is respectively electrically connected and signal-connected to the heater, the blower and the condenser, so that the air intake control module inputs a start signal to the air outlet control module, and the air outlet control module controls the heater to start heating the gas introduced into the adsorption tank, the air outlet control module controls the blower to start discharging the gas entering the adsorption tank and the moisture discharged from the adsorbent layer, and the air outlet control module controls the condenser to start condensing and recovering the moisture discharged from the adsorbent layer.

[0017] Through the above technical solution, the start and stop of the heater, the blower and the condenser are controlled by the air outlet control module to realize the control of the gas required for heating and drying introduced into the adsorption tank. After the first solenoid valve and the second solenoid valve are opened, the air intake control module inputs a start signal to the air outlet control module. The gas introduced into the adsorption tank is heated by the heater and enters the adsorption tank through the first solenoid valve of one adsorption tank from the air inlet pipe. Under the action of the blower, the heated gas sweeps the adsorbent layer and carries the moisture in the adsorbent layer, and then is pumped to the condenser through the second solenoid valve by the air outlet pipe for condensation and then can be discharged and collected.

[0018] As a further description of the dehydration treatment device for the organic recycled solvent described in the present utility model, preferably, a second moisture sensor is provided in the adsorbent layer for detecting whether the moisture content of the adsorbent layer reaches the minimum value during the heating and drying treatment; the second moisture sensor is electrically connected and signal-connected to the controller module, so that when the second moisture sensor detects that the moisture content of the adsorbent layer reaches the minimum value, the controller module receives the moisture content value of the second moisture sensor and generates a closing signal, and then the controller module inputs a start signal to the air outlet control module to turn off the heater, the blower and the condenser.

[0019] Through the above technical solution, by arranging a second moisture sensor in the adsorbent layer of each adsorption tank, it is realized to monitor whether the moisture content of the adsorbent layer reaches the minimum value during the heating and drying treatment. When the minimum value is reached, the heating and drying treatment can be stopped, and the adsorbent layer is cooled to room temperature and waits for the next cycle of use, improving the heating and drying treatment efficiency of the device and ensuring the efficient operation of the adsorption tank.

[0020] The beneficial effects of the present utility model are as follows: The present utility model sets a first three-way solenoid valve and a second three-way solenoid valve in each adsorption tank to control the selection of untreated organic solvents to enter a certain adsorption tank and pump the treated organic solvents into the collection tank. After the adsorbent layer of one adsorption tank is saturated, another adsorption tank is enabled to continue the dehydration treatment, and the adsorption tank is heated and dried for the next cycle of use, ensuring the continuous and efficient operation of the adsorption tank and meeting the production requirements; a second three-way solenoid valve and a third three-way solenoid valve are set in each adsorption tank, and the discharge pipe of one adsorption tank is connected to the feed pipe of another adsorption tank through a return pipe, so that the organic solvents that cannot be absorbed by the adsorbent layer in the previously enabled adsorption tank can be sent into another adsorption tank for continuous dehydration treatment, improving the dehydration treatment efficiency of the device and avoiding the waste of organic solvents. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of the dehydration treatment device for the organic recycled solvent of the present utility model;

[0022] Figure 2 is a structural block diagram of the control end of the present utility model;

[0023] Figure 3 is a structural block diagram of the feed control module and the discharge control module of the present utility model;

[0024] Figure 4 is a structural block diagram of the saturation state control module of the present utility model;

[0025] Figure 5 is a structural block diagram of the air inlet control module and the air outlet control module of the present utility model.

[0026] In the figure: adsorption tank 1, adsorbent layer 11, feed pipe 12, discharge pipe 13, air inlet pipe 14, air outlet pipe 15, first three-way solenoid valve 2, total feed pipe 21, feed pump 22, solvent tank 23, second three-way solenoid valve 3, total discharge pipe 31, return pipe 32, discharge pump 33, collection tank 34, third three-way solenoid valve 4, first solenoid valve 5, total air inlet pipe 51, heater 52, second solenoid valve 6, total air outlet pipe 61, fan 62, condenser 63, first moisture sensor 7, second moisture sensor 8, control terminal 9, controller module 91, feed control module 92, discharge control module 93, saturation state control module 94, air inlet control module 95, and air outlet control module 96. Specific embodiments

[0027] In order to further understand the structure, features, and other purposes of the present invention, the following is a detailed description with reference to the attached preferred embodiments and accompanying drawings. The embodiments described by the drawings are only used to illustrate the technical solutions of the present invention and do not limit the present invention.

[0028] In the first embodiment of the present invention, as Figure 1 shown, the present invention provides a dehydration treatment device for organic recovery solvents, including a plurality of adsorption tanks 1, and an adsorbent layer 11 is provided inside each adsorption tank 1. As Figure 2 shown, a structural block diagram of a control terminal 9 is shown.

[0029] In Figure 1 , a feed pipe 12 is provided at the lower part of each adsorption tank 1. The feed pipe 12 is connected to the total feed pipe 21 through the first three-way solenoid valve 2. The total feed pipe 21 is connected to the solvent tank 23 through the feed pump 22. By controlling the opening and closing of the first three-way solenoid valve 2 through the control terminal 9, the organic solvent to be treated is pumped into the corresponding adsorption tank 1 through the feed pump 22.

[0030] In Figure 1 , a discharge pipe 13 is provided at the upper part of each adsorption tank 1. The discharge pipe 13 is respectively connected to the total discharge pipe 31 and the return pipe 32 through the second three-way solenoid valve 3. The total discharge pipe 31 is connected to the collection tank 34 through the discharge pump 33. The return pipe 32 is connected to the feed pipe 12 of another adsorption tank 1 through the third three-way solenoid valve 4. By controlling the opening and closing of the second three-way solenoid valve 3 and the third three-way solenoid valve 4 through the control terminal 9, the dehydrated organic solvent is pumped into the collection tank 34, or sent into another adsorption tank 1 for secondary dehydration treatment.

[0031] In Figure 1In it, an air inlet pipe 14 is provided at the lower part of each adsorption tank 1. The air inlet pipe 14 is connected to the main air inlet pipe 51 through a first solenoid valve 5. A heater 52 is provided on the main air inlet pipe 51 for heating the gas introduced into the adsorption tank 1 to reach the temperature for heating and drying the adsorbent layer 11. By controlling the opening and closing of the first solenoid valve 5 through the control end 9, the introduced gas is heated and then sent into the corresponding adsorption tank 1 for heating and drying treatment of the interior of the adsorption tank 1.

[0032] In Figure 1 it, an air outlet pipe 15 is provided at the upper part of each adsorption tank 1. The air outlet pipe 15 is connected to the main air outlet pipe 61 through a second solenoid valve 6. The main air outlet pipe 61 is connected to the condenser 63 through a blower 62. By controlling the opening and closing of the second solenoid valve 6 through the control end 9, the discharged moisture is condensed and collected.

[0033] In this embodiment, the organic solvent to be treated is pumped in by a feed pump 22. When passing through a first three-way solenoid valve 2 connected to its adsorption tank 1, it enters the corresponding adsorption tank 1. The organic solvent flows upward in the adsorption tank 1 and passes through the adsorbent layer 11. The moisture in the organic solvent is absorbed by the adsorbent layer 11. The treated organic solvent is pumped out by a discharge pump 33 through a discharge pipe 13, passes through its second three-way solenoid valve 3 and enters the main discharge pipe 31, and flows into a collection tank 34.

[0034] After the adsorbent layer 11 is saturated, by controlling the opening and closing of the first three-way solenoid valve 2, the second three-way solenoid valve 3 and the third three-way solenoid valve 4 through the control end 9, another adsorption tank 1 is enabled to continue the dehydration treatment. Since the organic solvent is continuously introduced, there will be organic solvent in the previously enabled adsorption tank 1 that cannot be treated by the water absorption of the adsorbent layer 11. Therefore, by connecting its discharge pipe 13 to the return pipe 32 through the second three-way solenoid valve 3 and connecting the return pipe 32 to the feed pipe 12 of another adsorption tank 1 through the third three-way solenoid valve 4, the organic solvent not treated in the previously enabled adsorption tank 1 can be sent into another adsorption tank 1 to continue the dehydration treatment, improving the dehydration treatment efficiency of the device and avoiding waste of the organic solvent.

[0035] When the dehydration process continues in another adsorption tank 1, the first solenoid valve 5 and the second solenoid valve 6 of the previously enabled adsorption tank 1 are opened, so that the air inlet pipe 14 is connected to the main air inlet pipe 51, and the air outlet pipe 15 is connected to the main air outlet pipe 61. The heater 52 is started and gas is introduced into the main air inlet pipe 51 through the blower, so that the gas entering the adsorption tank 1 reaches the temperature for heating and drying the adsorbent layer 11, and the adsorbent layer 11 is continuously purged. The moisture discharged from the adsorbent layer 11 and the gas entering the adsorption tank 1 are discharged through the air outlet pipe 15 by the blower 62. The moisture discharged from the adsorbent layer 11 can be discharged and collected after being condensed by the condenser 63. After the adsorbent layer 11 in the adsorption tank 1 is dried and cooled to room temperature, it waits for the next cycle of use to ensure the continuous and efficient operation of the adsorption tank.

[0036] In the second embodiment of the present utility model, as Figure 3 shown, the control end 9 is provided with a controller module 91 and a feed control module 92. The controller module 91 is electrically connected and signal-connected to the feed control module 92, and the feed control module 92 is respectively electrically connected and signal-connected to the first three-way solenoid valve 2 and the feed pump 22. When the controller module 91 inputs a dehydration start signal to the feed control module 92, the feed control module 92 controls the first three-way solenoid valve 2 to connect the solvent tank 23 to the feed pipe 12 of an adsorption tank 1, and controls the feed pump 22 to start. When the controller module 91 inputs an adsorption saturation signal to the feed control module 92, the feed control module 92 controls the first three-way solenoid valve 2 to connect the solvent tank 23 to the feed pipe 12 of another adsorption tank 1.

[0037] In this embodiment, the state of each adsorption tank 1 is monitored by the controller module 91, and the first three-way solenoid valve 2 and the feed pump 22 are controlled by the feed control module 92. Each adsorption tank 1 is correspondingly provided with a first three-way solenoid valve 2 to realize the control of enabling the adsorption tank 1 and the control of introducing the organic solvent to be treated. Among them, the feed control module 92 controls the first three-way solenoid valve 2 of the first adsorption tank 1 to connect the passage of the solvent tank 23 and its corresponding feed pipe 12, and closes the passages of the main feed pipes 21 on both sides of the first three-way solenoid valve 2, so as to enable the first adsorption tank 1 and introduce the organic solvent to be treated into it. When the first adsorption tank 1 reaches the saturation state, the feed control module 92 controls the first three-way solenoid valve 2 of the first adsorption tank 1 to connect the passages of the main feed pipes 21 on both sides of it, closes the passage of the solvent tank 23 and its corresponding feed pipe 12, and controls the first three-way solenoid valve 2 of the second adsorption tank 1 to connect the passage of the solvent tank 23 and its corresponding feed pipe 12, so as to enable the second adsorption tank 1 and introduce the organic solvent to be treated into it.

[0038] In the third embodiment of the present utility model, as Figure 3As shown in the figure, the control terminal 9 is provided with a controller module 91 and a discharging control module 93. The controller module 91 is electrically connected and signal-connected to the discharging control module 93, and the discharging control module 93 is electrically connected and signal-connected to the second three-way solenoid valve 3. When the controller module 91 inputs a dehydration start signal to the discharging control module 93, the discharging control module 93 controls the second three-way solenoid valve 3 to connect the discharging pipe 13 of one adsorption tank 1 to the collection tank 34. When the controller module 91 inputs an adsorption saturation signal to the discharging control module 93, the discharging control module 93 controls the second three-way solenoid valve 3 to connect the discharging pipe 13 of the other adsorption tank 1 to the collection tank 34.

[0039] In this embodiment, the state of each adsorption tank 1 is monitored by the controller module 91, and the second three-way solenoid valve 3 is controlled by the discharging control module 93. Each adsorption tank 1 is correspondingly provided with a second three-way solenoid valve 3 to realize the control of pumping the processed organic solvent to the collection tank 34. Among them, the discharging control module 93 controls the second three-way solenoid valve 3 of the first adsorption tank 1 to connect the corresponding discharging pipe 13 to the collection tank 34 and closes the passage between the discharging pipe 13 and the return pipe 32 on the second three-way solenoid valve 3, so as to pump the processed organic solvent in the first adsorption tank 1 to the collection tank 34. When the first adsorption tank 1 reaches the saturation state, the discharging control module 93 controls the second three-way solenoid valve 3 of the first adsorption tank 1 to close the passage between the corresponding discharging pipe 13 and the collection tank 34, and controls the second three-way solenoid valve 3 of the second adsorption tank 1 to connect the corresponding discharging pipe 13 to the collection tank 34 and closes the passage between the discharging pipe 13 and the return pipe 32 on the second three-way solenoid valve 3, so as to pump the processed organic solvent in the second adsorption tank 1 to the collection tank 34.

[0040] In the fourth embodiment of the present utility model, as Figure 4 shown, the control terminal 9 is provided with a controller module 91 and a saturation state control module 94. The controller module 91 is electrically connected and signal-connected to the saturation state control module 94, and the saturation state control module 94 is electrically connected and signal-connected to the second three-way solenoid valve 3 and the third three-way solenoid valve 4 respectively. When the controller module 91 inputs an adsorption saturation signal to the saturation state control module 94, the saturation state control module 94 controls the second three-way solenoid valve 3 and the third three-way solenoid valve 4 to connect the discharging pipe 13 of one adsorption tank 1 to the feeding pipe 12 of the other adsorption tank 1 through the return pipe 32.

[0041] In this embodiment, the controller module 91 monitors the state of each adsorption tank 1, and the saturation state control module 94 controls the second three-way solenoid valve 3 and the third three-way solenoid valve 4. Each adsorption tank 1 is provided with a second three-way solenoid valve 3, and a third three-way solenoid valve 4 is arranged between the two adsorption tanks 1, so as to realize the control of pumping out the unprocessed organic solvent in one adsorption tank 1 to another adsorption tank 1 when the adsorption tank 1 reaches the saturation state. Among them, the saturation state control module 94 controls the second three-way solenoid valve 3 of the first adsorption tank 1 to connect the corresponding discharge pipe 13 and the return pipe 32, and controls the corresponding third three-way solenoid valve 4 to connect the return pipe 32 and the feed pipe 12 of the second adsorption tank 1, so as to realize pumping out the unprocessed organic solvent in the first adsorption tank 1 to the second adsorption tank 1.

[0042] In the fifth embodiment of the present utility model, as Figure 4 shown, a first moisture sensor 7 is provided on the discharge pipe 13 of each adsorption tank 1, which is used to detect whether the moisture content of the recovered organic solvent is higher than the reuse standard. The first moisture sensor 7 is electrically connected and signal-connected to the controller module 91. When the first moisture sensor 7 detects that the moisture content of the organic solvent is higher than the moisture content value of the reuse standard, the controller module 91 receives the moisture content value of the first moisture sensor 7 and generates an adsorption saturation signal.

[0043] In this embodiment, by arranging the first moisture sensor 7 on the discharge pipe 13 of each adsorption tank 1, it is realized to monitor whether the adsorbent layer 11 in the adsorption tank 1 reaches the saturation state. When the saturation state is reached, another adsorption tank 1 can be timely enabled to continue the dehydration treatment, improving the dehydration treatment efficiency of the device and avoiding the unusability of the collected organic solvent. Among them, after the moisture of the organic solvent is absorbed by the adsorbent layer 11 in the first adsorption tank 1, the moisture content of the organic solvent pumped out by its discharge pipe 13 is lower than or reaches the reuse standard, and it can be collected and recycled; when the adsorbent layer 11 is gradually saturated and can no longer adsorb moisture, the moisture content of the organic solvent pumped out by the discharge pipe 13 will be higher than the reuse standard. At this time, the organic solvent cannot be recycled, and entering the collection tank 34 will affect the organic solvent meeting the use standard and reduce the dehydration treatment efficiency of the device.

[0044] In the sixth embodiment of the present utility model, as Figure 5As shown in the figure, the control end 9 is provided with a controller module 91 and an intake air control module 95. The controller module 91 is electrically connected and signal-connected to the intake air control module 95. The intake air control module 95 is respectively electrically connected and signal-connected to the first solenoid valve 5 and the second solenoid valve 6. The controller module 91 inputs an adsorption saturation signal to the intake air control module 95, and the intake air control module 95 controls the first solenoid valve 5 to connect the air inlet pipe 14 of an adsorption tank 1 to the main air inlet pipe 51, and controls the second solenoid valve 6 to connect the air outlet pipe 15 of an adsorption tank 1 to the main air outlet pipe 61.

[0045] In this embodiment, the state of each adsorption tank 1 is monitored by the controller module 91, and the opening and closing of the first solenoid valve 5 and the second solenoid valve 6 are controlled by the intake air control module 95. Each adsorption tank 1 is correspondingly provided with a first solenoid valve 5 and a second solenoid valve 6. After reaching the saturation state in an adsorption tank 1, the first solenoid valve 5 and the second solenoid valve 6 are opened to provide a gas circulation path for heating and drying the gas introduced into the adsorption tank 1. After the heating and drying treatment of an adsorption tank 1 is completed, the first solenoid valve 5 and the second solenoid valve 6 are closed to ensure the environment for dehydrating the organic solvent in the adsorption tank 1.

[0046] In the seventh embodiment of the present utility model, as Figure 5 shown, the control end 9 is provided with an air outlet control module 96. The intake air control module 95 is electrically connected and signal-connected to the air outlet control module 96. The air outlet control module 96 is respectively electrically connected and signal-connected to the heater 52, the blower 62 and the condenser 63. The intake air control module 95 inputs a start signal to the air outlet control module 96, and the air outlet control module 96 controls the heater 52 to start heating the gas introduced into the adsorption tank 1. The air outlet control module 96 controls the blower 62 to start discharging the gas entering the adsorption tank 1 and the moisture discharged from the adsorbent layer 11. The air outlet control module 96 controls the condenser 63 to start condensing and recovering the moisture discharged from the adsorbent layer 11.

[0047] In this embodiment, the start and stop of the heater 52, the blower 62 and the condenser 63 are controlled by the air outlet control module 96 to realize the control of the gas required for heating and drying introduced into the adsorption tank 1. After the first solenoid valve 5 and the second solenoid valve 6 are opened by the intake air control module 95, a start signal is input to the air outlet control module 96. The gas introduced into the adsorption tank 1 is heated by the heater 52 and enters the adsorption tank 1 through the first solenoid valve 5 of an adsorption tank 1 from the air inlet pipe 14. Under the action of the blower 62, the heated gas sweeps the adsorbent layer 11 and carries the moisture in the adsorbent layer 11, and then is pumped to the condenser 63 through the second solenoid valve 6 by the air outlet pipe 15 for condensation and then can be discharged and collected.

[0048] In the eighth embodiment of the present utility model, as Figure 5As shown, a second moisture sensor 8 is provided in the adsorbent layer 11 to detect whether the moisture content of the adsorbent layer 11 reaches the minimum value during the heat drying process; the second moisture sensor 8 is electrically and signal-connected to the controller module 91, so that when the second moisture sensor 8 detects that the moisture content of the adsorbent layer 11 reaches the minimum value, the controller module 91 receives the moisture content value of the second moisture sensor 8 and generates a shutdown signal. Furthermore, the controller module 91 inputs a start signal to the air outlet control module 96 to turn off the heater 52, the blower 62, and the condenser 63.

[0049] In this embodiment, by providing the second moisture sensor 8 in the adsorbent layer 11 of each adsorption tank 1, it is realized to monitor whether the moisture content of the adsorbent layer 11 reaches the minimum value during the heat drying process. When the minimum value is reached, the heat drying process can be stopped, and the adsorbent layer 11 is cooled to room temperature and waits for the next cycle of use, improving the heat drying efficiency of the device.

[0050] It should be noted that the above-mentioned utility model content and specific implementation manners are intended to prove the practical application of the technical solutions provided by the present utility model, and should not be construed as a limitation on the protection scope of the present utility model. Those skilled in the art can make various modifications, equivalent replacements, or improvements within the spirit and principle of the present utility model. The protection scope of the present utility model shall be subject to the appended claims.

Claims

1. A dehydration treatment device for organic recovery solvent, characterized in that: It comprises a plurality of adsorption tanks (1) and a control end (9), wherein each adsorption tank (1) is provided with an adsorbent layer (11); A feed pipe (12) is provided at the bottom of each adsorption tank (1), the feed pipe (12) is connected to a main feed pipe (21) via a first three-way solenoid valve (2), and the main feed pipe (21) is connected to a solvent tank (23) via a feed pump (22), so that the organic solvent to be treated is pumped into the corresponding adsorption tank (1) via the feed pump (22) by controlling the opening and closing of the first three-way solenoid valve (2) through the control end (9); A discharge pipe (13) is provided at the top of each adsorption tank (1). The discharge pipe (13) is connected to a main discharge pipe (31) and a return pipe (32) respectively through a second three-way solenoid valve (3). The main discharge pipe (31) is connected to a collection tank (34) through a discharge pump (33). The return pipe (32) is connected to a feed pipe (12) of another adsorption tank (1) through a third three-way solenoid valve (4). The second three-way solenoid valve (3) and the third three-way solenoid valve (4) are controlled by the control end (9) to open and close, so that the organic solvent after dehydration treatment is pumped into the collection tank (34), or sent to another adsorption tank (1) for secondary dehydration treatment. An air inlet pipe (14) is provided at the bottom of each adsorption tank (1), and the air inlet pipe (14) is connected to a main air inlet pipe (51) via a first electromagnetic valve (5), and a heater (52) is provided on the main air inlet pipe (51), so that the first electromagnetic valve (5) is controlled to be on and off by a control end (9), and the gas introduced is heated and then sent to the corresponding adsorption tank (1), so that the interior of the adsorption tank (1) is heated and dried; An air outlet pipe (15) is provided at the top of each adsorption tank (1). The air outlet pipe (15) is connected to a main air outlet pipe (61) via a second solenoid valve (6). The main air outlet pipe (61) is connected to a fan (62) and a condenser (63) via a control end (9) to control the opening and closing of the second solenoid valve (6) so that the discharged moisture is condensed and collected.

2. The dehydration treatment device for organic recovery solvent according to claim 1, characterized in that: The control end (9) is provided with a controller module (91) and a feed control module (92); the controller module (91) is electrically and signal-connected with the feed control module (92); the feed control module (92) is electrically and signal-connected with the first three-way solenoid valve (2) and the feed pump (22), respectively, so that the controller module (91) inputs a dehydration start signal to the feed control module (92), the feed control module (92) controls the first three-way solenoid valve (2) to connect the solvent tank (23) with the feed pipe (12) of one adsorption tank (1), and controls the feed pump (22) to start; the controller module (91) inputs an adsorption saturation signal to the feed control module (92), the feed control module (92) controls the first three-way solenoid valve (2) to connect the solvent tank (23) with the feed pipe (12) of another adsorption tank (1).

3. The dehydration treatment device for organic recovery solvent according to claim 1, characterized in that: The control end (9) is provided with a controller module (91) and a discharge control module (93); the controller module (91) is electrically and signal-connected with the discharge control module (93), and the discharge control module (93) is electrically and signal-connected with the second three-way solenoid valve (3), so that the controller module (91) inputs a dehydration start signal to the discharge control module (93), and the discharge control module (93) controls the second three-way solenoid valve (3) to connect the discharge pipe (13) of one adsorption tank (1) with the collection tank (34); the controller module (91) inputs an adsorption saturation signal to the discharge control module (93), and the discharge control module (93) controls the second three-way solenoid valve (3) to connect the discharge pipe (13) of another adsorption tank (1) with the collection tank (34).

4. The dehydration treatment device for organic recovery solvent according to claim 1, characterized in that: The control end (9) is provided with a controller module (91) and a saturation state control module (94); the controller module (91) is electrically connected to the saturation state control module (94) and signal-connected thereto; the saturation state control module (94) is electrically connected to the second three-way solenoid valve (3) and the third three-way solenoid valve (4) and signal-connected thereto respectively, so that the controller module (91) inputs an adsorption saturation signal to the saturation state control module (94); the saturation state control module (94) controls the second three-way solenoid valve (3) and the third three-way solenoid valve (4) to connect the discharge pipe (13) of one adsorption tank (1) to the feed pipe (12) of another adsorption tank (1) through the return pipe (32).

5. The dehydration treatment device for organic recovery solvent according to claim 4, characterized in that: A first moisture sensor (7) is provided on the discharge pipe (13) for detecting whether the moisture content of the recovered organic solvent is higher than the reuse standard; the first moisture sensor (7) is electrically and signal-connected to the controller module (91), so that when the first moisture sensor (7) detects that the moisture content of the organic solvent is higher than the moisture content value of the reuse standard, the controller module (91) receives the moisture content value of the first moisture sensor (7) and generates an adsorption saturation signal.

6. The dehydration treatment device for organic recovery solvent according to claim 1, characterized in that: The control end (9) is provided with a controller module (91) and an air intake control module (95); the controller module (91) is electrically and signal-connected to the air intake control module (95); the air intake control module (95) is electrically and signal-connected to the first solenoid valve (5) and the second solenoid valve (6), respectively, so that the controller module (91) inputs an adsorption saturation signal to the air intake control module (95), and the air intake control module (95) controls the first solenoid valve (5) to connect the air inlet pipe (14) of an adsorption tank (1) to the main air inlet pipe (51), and controls the second solenoid valve (6) to connect the air outlet pipe (15) of an adsorption tank (1) to the main air outlet pipe (61).

7. The dehydration treatment device for organic recovery solvent according to claim 6, characterized in that: The control end (9) is provided with an air outlet control module (96); the air intake control module (95) is electrically connected to the air outlet control module (96) and signal-connected thereto; the air outlet control module (96) is electrically connected to the heater (52), the fan (62) and the condenser (63) and signal-connected thereto respectively, so that the air intake control module (95) inputs a start signal to the air outlet control module (96); the air outlet control module (96) controls the heater (52) to start heating the gas entering the adsorption tank (1); the air outlet control module (96) controls the fan (62) to start discharging the gas entering the adsorption tank (1) and the moisture discharged from the adsorbent layer (11); and the air outlet control module (96) controls the condenser (63) to start condensing and recovering the moisture discharged from the adsorbent layer (11).

8. The dehydration treatment device for organic recovery solvent according to claim 7, characterized in that: A second moisture sensor (8) is provided in the adsorbent layer (11) for detecting whether the moisture content of the adsorbent layer (11) reaches a minimum value during the heating and drying process; the second moisture sensor (8) is electrically and signal-connected to the controller module (91), so that when the second moisture sensor (8) detects that the moisture content of the adsorbent layer (11) reaches a minimum value, the controller module (91) receives the moisture content value of the second moisture sensor (8) and generates a shutdown signal, and then the controller module (91) inputs a start signal to the air outlet control module (96) to shut down the heater (52), the fan (62) and the condenser (63).

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