Wastewater methanol recovery device

Abstract

The invention relates to the technical field of methanol recovery, and discloses a wastewater methanol recovery device which comprises a wastewater tank, a heating tank, a liquid collection tank, a liquid guide pipe, a gas guide pipe and a condensation pipe, the liquid guide pipe communicates with the wastewater tank and the heating tank; the condensation pipe is provided with a condensation section positioned in the gas guide pipe; the air guide pipe is communicated between the heating box and the liquid collecting box, the liquid box is opposite and communicated, and condensate water circularly flows in the condensation pipe; the heating box comprises an outer housing, a pool body and an isolation plate; the outer housing covers the tank body, and the liquid guide pipe and the gas guide pipe both extend into the outer housing and are communicated with the tank body; the partition plates are arranged in the pool body and divide the pool body into a plurality of heating areas and a water outlet area, and a water outlet pipe is communicated in the water outlet area; a heating piece is arranged in the isolation plate, and a transferring device is arranged in the pool body, so that wastewater in the heating area is transferred to the adjacent heating area, and wastewater in the heating area close to the water outlet area is transferred to the water outlet area. The method can improve the recovery rate of methanol in the wastewater.

Description

Technical Field

[0001] The present application relates to the technical field of methanol recovery, and in particular to a wastewater methanol recovery device. Background Art

[0002] With the rapid development of industrialization, methanol, as an important organic chemical raw material and fuel, has been widely used in many fields such as chemical industry, medicine, fine chemicals, biodiesel, environmental protection and wine making. However, a large amount of methanol-containing wastewater will inevitably be generated during the production and use of methanol. If these wastewaters are directly discharged into the environment, they will have a serious impact on the ecosystem and human health.

[0003] The existing Chinese patent document with publication number CN212335077U discloses a wastewater methanol recovery device, including a recovery tower, a connected stirring recovery structure is provided on the outside of the recovery tower, the stirring recovery mechanism includes a stirring box and a stirring pipe, the stirring box is connected to the recovery tower and a first electric heating wire is provided on the inner wall; one side of the stirring box is connected to a heating box, and one side of the heating box has a molecular sieve; the top of the stirring box is connected to a gas collecting pipe 1, the top of the heating box is connected to a gas collecting pipe 2, the gases in the gas collecting pipe 1 and the gas collecting pipe 2 pass through a condensing coil together, and the gas collecting pipe 1 and the gas collecting pipe 2 are connected to a liquid collecting tank together.

[0004] With regard to the above-mentioned related technologies, the heated wastewater flows from the mixing box into the heating box by overflow, and also flows out of the heating box by overflow. This method easily causes part of the wastewater to flow out before being heated to the boiling point of methanol, which has an adverse effect on the recovery rate of methanol. Summary of the invention

[0005] In order to improve the recovery rate of methanol in wastewater, the present application provides a wastewater methanol recovery device.

[0006] The present application provides a wastewater methanol recovery device, which adopts the following technical solution: A wastewater methanol recovery device comprises a wastewater tank, a heating tank, a liquid collecting tank, a liquid guide pipe, an air guide pipe and a condenser pipe; The liquid guide pipe is connected to the waste water tank and the heating tank, and a water delivery valve is provided on the liquid guide pipe; the condenser pipe has a condensation section located in the air guide pipe; the air guide pipe is connected to the heating tank and the liquid collecting tank, the liquid tanks are opposite and connected, and condensed water circulates in the condenser pipe; The heating box includes an outer cover shell, a pool body and an isolation plate; the outer cover shell covers the pool body, and the liquid duct and the air duct both extend into the outer cover shell and communicate with the pool body; the isolation plate is arranged in the pool body and has a plurality of them to divide the pool body into a plurality of heating zones and a water outlet zone, and the plurality of heating zones and the water outlet zones are arranged in sequence, and the water outlet zone is connected with a water outlet pipe; a heating element is provided in the isolation plate, and a moving device is provided in the pool body to move the waste water in the heating zone to the adjacent heating zone, and to move the waste water in the heating zone close to the water outlet zone to the water outlet zone.

[0007] By adopting the above technical scheme, the wastewater flowing into the tank body from the wastewater tank is controlled by the water transfer valve, and the multiple heating zones can separate and heat the wastewater in the tank body, thereby improving the heating efficiency. The wastewater in the heating zone is gradually moved to the water outlet zone through other heating zones through the mobilization device, thereby realizing the orderly flow and heating of the wastewater between the heating zone and the water outlet zone, so that the wastewater is fully heated before being discharged from the water outlet zone, thereby improving the recovery rate of methanol in the wastewater.

[0008] Optionally, the isolation plate includes an outer partition and an inner partition, the inner partition slides down inside the outer partition, and the outer partition is provided with first through holes in an array, and the inner partition is provided with second through holes in an array, the first through holes correspond to the second through holes one by one, and when the inner partition moves up and down, the first through holes and the second through holes can be adjusted to a connected state or a misaligned state; The mobilization device includes a push plate, an adjustment member, and a moving member; the push plates correspond to the heating zones one by one and are located in the heating zones, each of the push plates includes an outer push plate and an inner push plate, the inner push plate slides down in the outer push plate, and the outer push plate is provided with a third through hole in an array, and the inner push plate is provided with a fourth through hole in an array; the third through hole corresponds to the fourth through hole one by one, and the inner push plate can adjust the third through hole and the fourth through hole to a connected state or a misaligned state when moving up and down; The adjusting member is used to adjust the position of the inner partition relative to the outer partition, and at the same time adjust the position of the inner push plate relative to the outer push plate, so that when the first through hole is misaligned with the second through hole, the third through hole is connected with the fourth through hole, and when the third through hole is misaligned with the fourth through hole, the first through hole is connected with the second through hole; The moving member is installed in the pool body, and is used to drive the push plate to move in the heating zone along the distribution direction of the heating zone. When the third through hole and the fourth through hole are misaligned, the push plate separates the inner cavity of the heating zone along the distribution direction of the heating zone.

[0009] By adopting the above technical solution, the inner and outer partitions and the inner push plate move relative to each other, so that when the first through hole is misaligned with the second through hole, the water flow exchange between the heating zones can be prevented, and the heating zones can be isolated from each other. When the first through hole is connected with the second through hole, and the third through hole is misaligned with the fourth through hole, the push plate can be moved to push the wastewater in the current heating zone to the adjacent heating zone, and the wastewater flowing into the current heating zone from other heating zones is isolated by the push plate and is not easy to exchange water flow with the wastewater in the current heating zone, so that the wastewater in each heating zone is gradually exchanged to the water outlet zone under the condition of mutual isolation, so that the wastewater in each heating zone can be fully heated.

[0010] Optionally, the adjusting member includes a connecting frame, a connecting rod and a power source, the connecting frame simultaneously connects all the inner push plates; one end of the connecting rod is connected to the inner partition, and the end of the connecting rod away from the inner partition slides on the connecting frame along the moving direction of the push plate; the power source is installed on the outer wall of the pool body, and the output end of the power source is connected to the moving member to provide power for the moving member and the connecting frame to move up and down.

[0011] By adopting the above technical solution, through the cooperation of the connecting frame, the connecting rod and the power source, the synchronous control of the inner partition and the inner push plate is achieved, the control structure is simplified, and the stability and reliability of the system are improved.

[0012] Optionally, the output end of the movable member is connected to the connecting frame, and the output end of the movable member can be extended and retracted along the distribution direction of the heating area.

[0013] By adopting the above technical solution, the output end of the movable part can be extended and retracted along the distribution direction of the heating zone, so as to drive the connecting frame and the pushing plate to move, thereby realizing the pushing and changing of the wastewater in the heating zone.

[0014] Optionally, the connecting rod has a limiting portion at one end close to the connecting frame, and the connecting frame has a limiting groove for the limiting portion to slide along the moving direction of the push plate, and the width of the limiting portion away from one end of the connecting rod is greater than the width of the limiting portion close to the one end of the connecting rod.

[0015] By adopting the above technical solution, when the connecting frame moves along the distribution direction of the heating zone, the limiting part can move in the limiting groove, and the limiting part can limit the relative movement between the inner partition and the connecting frame in the vertical direction, so that when the connecting frame moves up and down, the inner partition can be driven to move up and down together.

[0016] Optionally, a guide bar extending along the moving direction of the push plate is protruded from the inner wall of the pool body, and the outer push plate is formed with a guide groove for slidingly enclosing the guide bar.

[0017] By adopting the above technical solution, the cooperation between the guide strip and the guide groove can improve the stability of the push plate moving in the tank body.

[0018] Optionally, the heating element is located in the inner partition and close to the second through hole, and when the third through hole is connected to the fourth through hole, the heating element is simultaneously opposite to the first through hole and the third through hole.

[0019] By adopting the above technical solution, the heating element is opposite to each other when the third through hole is connected to the fourth through hole, so as to improve the efficiency of the heating element in conducting heat to the wastewater.

[0020] Optionally, the condenser tube further has a cooling section, and the cooling section is located in the waste water tank.

[0021] By adopting the above technical solution, the cooling section is located in the wastewater tank so as to transfer the heat of the methanol gas received by the condenser to the wastewater, so as to cool the condensed water flowing through the cooling section.

[0022] Optionally, the condenser tube further has a preheating section, which is located between the cooling section and the condensing section. When the condensed water flows out from the condensing section, it passes through the preheating section and the condensing section in sequence and then flows into the condensing section. The liquid guide tube has a portion located in the preheating section.

[0023] By adopting the above technical solution, when the wastewater flows through the preheating section, the condensed water in the preheating section transfers heat to the wastewater in the liquid guiding pipe, so as to preheat the wastewater while cooling the condensed water.

[0024] Optionally, the condenser tube is provided with an infusion tube, and the condenser tube is detachably connected to a blocking piece at the infusion tube.

[0025] By adopting the above technical solution, the infusion tube on the condenser tube facilitates the circulation and replenishment of condensed water.

[0026] In summary, the present application includes at least one of the following beneficial effects: 1. By setting up multiple heating zones and actuating devices, the zone heating can be achieved, and the wastewater in the heating zone can be transported to the outlet zone for discharge, so that the wastewater in each heating zone can be fully heated, so that the methanol in the wastewater can be fully evaporated and recovered, thereby improving the recovery rate of methanol in the wastewater; 2. The cooling section, preheating section and condensing section of the condenser tube utilize the heat energy of the wastewater and condensed water in the wastewater pool, realizing the cascade utilization of energy. The cooling section uses wastewater to cool the condensed water, and the preheating section uses the waste heat of the condensed water to preheat the wastewater entering the heating box, reducing the energy input required for heating, which not only improves the condensation efficiency, but also reduces the overall energy consumption and improves the resource utilization rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application; Figure 2 yes Figure 1 Sectional view at AA in the middle; Figure 3 It is a schematic diagram of the structure of the cell body in the embodiment of the present application; Figure 4 is a cross-sectional view of an isolation plate and a push plate in an embodiment of the present application; Figure 5 yes Figure 4 A schematic diagram of the enlarged structure at B in the middle; Figure 6 It is a schematic diagram of the structure of the isolation plate and the push plate in the embodiment of the present application; Figure 7 It is a structural schematic diagram of another state of the isolation plate and the push plate in the embodiment of the present application; Figure 8 This is a schematic diagram of the structure of the liquid guide tube, the air guide tube and the condenser tube in the embodiment of the present application; Fig. 9 It is a schematic diagram of the explosion structure of the condenser and the liquid guide tube in the embodiment of the present application.

[0028] Explanation of reference numerals: 1, waste water tank; 2, heating tank; 3, liquid collecting tank; 4, liquid guide pipe; 5, air guide pipe; 51, conveying section; 52, reaction section; 53, guide section; 54, collecting section; 6, condenser; 61, condensing section; 62, preheating section; 63, cooling section; 64, transmission section; 65, water delivery pump; 7, water delivery valve; 8, outer cover shell; 9, tank body; 10, isolation plate; 101, outer partition; 102, inner partition; 11, heating zone; 12, water outlet zone; 13 , water outlet pipe; 14, heating element; 15, first through hole; 16, second through hole; 17, pushing plate; 171, outer pushing plate; 172, inner pushing plate; 18, adjusting member; 181, connecting frame; 182, connecting rod; 183, power source; 19, moving member; 20, third through hole; 21, fourth through hole; 22, limiting part; 23, limiting groove; 24, guide strip; 25, guide groove; 26, infusion tube; 27, blocking member; 28, non-return floor drain valve; 29, synchronization rod. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-9 This application is described in further detail.

[0030] The present application embodiment discloses a wastewater methanol recovery device. Figure 1The wastewater methanol recovery device includes a wastewater tank 1, a heating tank 2, a liquid collecting tank 3, a liquid guide pipe 4, an air guide pipe 5 and a condenser pipe 6. The liquid guide pipe 4 connects the wastewater tank 1 with the heating tank 2, the air guide pipe 5 connects the heating tank 2 with the liquid collecting tank 3, condensed water circulates in the condenser pipe 6, and the condenser pipe 6 extends into the air guide pipe 5 to condense the gas in the air guide pipe 5, and the condensed gas is guided to the liquid collecting tank 3 for collection.

[0031] Reference Figure 1 and Figure 2 , wherein the wastewater tank 1 is mounted on the heating box 2, and the liquid conduit 4 is connected from the bottom of the wastewater tank 1 downward to the top of the heating box 2 to connect the wastewater tank 1 with the heating box 2. The liquid conduit 4 is located between the wastewater tank 1 and the heating box 2 and is provided with a water delivery valve 7 outside the liquid conduit 4. The water delivery valve 7 is an electric valve that can cut off or connect the water path from the liquid conduit 4 to the heating box 2, so that when water needs to be delivered to the heating box 2, the valve is opened, and the water automatically flows to the heating box 2 under its own weight, and the valve is closed when the water delivery needs to be stopped.

[0032] The heating box 2 includes an outer shell 8, a cell body 9 and an isolation plate 10. The outer shell 8 is hollow inside, the cell body 9 is fixed in the outer shell 8 and has an upward opening, and the cell body 9 is a square structure. The isolation plates 10 are installed in the cell body 9 and there are multiple isolation plates 10, which are evenly spaced along the length direction of the cell body 9 to separate the cell body 9 into mutually isolated heating areas 11 and water outlet areas 12 along its own length direction. The heating area 11 is formed between the inner wall of one end of the cell body 9 and the adjacent partition, and between two adjacent partitions, and the water outlet area 12 is formed between the inner wall of the other end of the cell body 9 and the adjacent partition.

[0033] The bottom end of the liquid guide tube 4 is opposite to the top opening of the heating zone 11 away from the water outlet zone 12 to guide the waste water into the heating zone 11; the air guide tube 5 extends from the position opposite to the water outlet zone 12 of the outer cover shell 8 to the outer cover shell 8 to connect the air guide tube 5 with the inner cavity of the outer cover shell 8.

[0034] Reference Figure 1 and Figure 2 An outlet pipe 13 is connected to the inner bottom wall of the pool body 9. The outlet pipe 13 extends from the outer cover shell 8 out of the heating box 2, and a non-return floor drain valve 28 is installed in the outlet pipe 13. The valve plate of the non-return floor drain valve 28 is acted upon by a torsion spring to close the pipeline when it is not impacted by the water flow. When water flows into the outlet pipe 13, the gravity of the water opens the valve of the non-return floor drain valve 28 to discharge the waste water in the water outlet area 12 from the outlet pipe 13.

[0035] Each partition is provided with a heating element 14 to heat the wastewater in the heating zone 11, and the pool body 9 is provided with a mobilizing device. When the mobilizing device cooperates with the isolation plate 10, the wastewater in the heating zone 11 can be mobilized to the adjacent heating zone 11 toward the water outlet zone 12, and the wastewater in the heating zone 11 adjacent to the water outlet zone 12 can be mobilized to the water outlet zone 12.

[0036] Reference Figure 3 and Figure 4 Specifically, each baffle includes an outer baffle 101 and an inner baffle 102. The outer baffle 101 and the inner baffle 102 are both in the shape of square plates, the outer baffle 101 is fixed on the inner wall of the cell body 9, and the inner baffle 102 slides up and down in the outer baffle 101.

[0037] Reference Figure 5 and Figure 6 The outer partition 101 is provided with a plurality of first through holes 15 extending through two opposite sides thereof at uniform vertical intervals, and the inner partition 102 is provided with a plurality of second through holes 16 extending through two opposite sides thereof at uniform vertical intervals. The first through holes 15 correspond to the second through holes 16 one by one and have the same size. The distance between two adjacent first through holes 15 is the same as the distance between two adjacent second through holes 16, and the distance between two adjacent first through holes 15 is twice the extension height of a single first through hole 15.

[0038] When the inner partition 102 moves up and down relative to the outer partition 101, it can move to the first through hole 15 and the second through hole 16 opposite to each other, so that the water flow in the spaces on the opposite sides of the outer partition 101 is connected through the first through hole 15 and the second through hole 16; and the inner partition 102 can move to the first through hole 15 and the second through hole 16 are mutually offset, so that the water flow in the corresponding spaces on the opposite sides of the outer partition 101 is isolated from each other. In addition, the heating element 14 is installed in the inner partition 102 and close to the second through hole 16. The heating element 14 can be a heating rod or a heating wire, and the set temperature of the heating element 14 in the inner partition 102 increases successively along the direction close to the water outlet area 12.

[0039] Reference Figure 3 and Figure 5 The mobilization device includes a push plate 17, an adjustment member 18 and a moving member 19. The number of the push plates 17 is consistent with the number of the heating zones 11, and the push plates 17 correspond to the heating zones 11 one by one. The push plates 17 can slide in the corresponding heating zones 11 along the length direction of the cell body 9.

[0040] Each push plate 17 includes an outer push plate 171 and an inner push plate 172, both of which are in the shape of square plates. The outer push plate 171 slides in the heating zone 11, and the inner push plate 172 slides up and down in the outer push plate 171. The outer push plate 171 is evenly spaced vertically with a plurality of third through holes 20 penetrating the opposite sides of itself, and the inner push plate 172 is evenly spaced vertically with a plurality of fourth through holes 21 penetrating the opposite sides of itself, and the third through holes 20 and the fourth through holes 21 correspond to the first through holes 15 one by one.

[0041] Reference Figure 2 and Figure 6 The sizes of the third through hole 20 and the fourth through hole 21 are consistent with the size of the first through hole 15, and the spacing between two adjacent third through holes 20 and the spacing between two adjacent fourth through holes 21 are consistent with the spacing between two adjacent first through holes 15. A guide bar 24 extending along the length extension direction of the pool body 9 is protruded from the inner bottom wall of the pool body 9, and a guide groove 25 is slidably enclosed on the guide bar 24 along the length direction of the guide bar 24 at the bottom of the outer push plate 171, and the cross-section of the guide bar 24 is dovetail-shaped with a width gradually decreasing downward, so as to guide the movement of the outer push plate 171 while limiting the outer push plate 171 from leaving the pool body 9 upward.

[0042] Similarly, when the inner push plate 172 moves up and down relative to the outer push plate 171, it can move to the point where the third through hole 20 is opposite to the fourth through hole 21, so that the water flow in the spaces on opposite sides of the outer push plate 171 is connected with the fourth through hole 21 through the third through hole 20; and the inner push plate 172 can move to the point where the third through hole 20 and the fourth through hole 21 are offset from each other, so that the water flow in the corresponding spaces on opposite sides of the outer push plate 171 is isolated from each other.

[0043] Reference Figure 3 and Figure 6 The adjusting member 18 includes a connecting frame 181, a connecting rod 182 and a power source 183. The connecting frame 181 is fixedly connected to all the inner push plates 172 at the same time. The connecting frame 181 has a synchronization rod 29 whose length extension direction is consistent with the length direction of the tank body 9. The connecting rod 182 corresponds to the inner baffle 102 one by one and extends vertically. The bottom end of the connecting rod 182 is fixedly connected to the top of the corresponding inner baffle 102. The top end of the connecting rod 182 has a dovetail-shaped limit portion 22, so that the width of the top of the limit portion 22 is greater than the width of the bottom of the limit portion 22. Figure 2 The synchronous rod 29 is provided with a limiting groove 23 for the limiting portion 22 to slide, and the limiting portion 22 slides in the limiting groove 23 along the length direction of the pool body 9.

[0044] The moving member 19 and the power source 183 are both electric telescopic rods, the telescopic end of the moving member 19 is telescopic along the length direction of the pool body 9, and the telescopic end of the power source 183 is telescopic along the vertical direction. The base of the power source 183 is fixed on the outer wall of the pool body 9, the telescopic end of the power source 183 is connected to the base of the moving member 19, and the telescopic end of the moving member 19 is connected to the adjusting member 18.

[0045] Reference Figure 3 and Figure 5 , the moving member 19 and the power source 183 are both started at a certain interval. When the moving member 19 and the power source 183 are in the initial static state, the telescopic end of the moving member 19 is retracted, and the telescopic end of the power source 183 is extended. At this time, the first through hole 15 is misaligned with the second through hole 16, the third through hole 20 is connected with the fourth through hole 21, the first through hole 15 and the corresponding third through hole 20 are overlapped along the length direction of the pool body 9, and the heating element 14 in the inner partition 102 is relative to the first through hole 15 and the third through hole 20; at this time, the outer push plate 171 is in contact with the outer partition 101 on the side of the heating zone 11 close to the water outlet zone 12, and the wastewater in the heating zone 11 is heated by the heat conduction of the heating element 14.

[0046] Reference Figure 3 , Figure 5 and Figure 7 When the moving member 19 and the power source 183 are started, the telescopic end of the moving member 19 is extended first, so that the connecting frame 181 drives the outer push plate 171 to move away from the water outlet area 12 to abut against the outer partition 101 on the side of the heating area 11 away from the water outlet area 12. During the movement of the connecting frame 181, the limiting part 22 moves in the limiting groove 23, and during the movement of the outer push plate 171, the water flow in the heating area 11 is disturbed by the third through hole 20 and the fourth through hole 21. Then the telescopic end of the power source 183 is recovered, driving the inner partition 102 and the inner push plate 172 to move downward, so that the first through hole 15 is connected with the second through hole 16, and the third through hole 20 is misaligned with the fourth through hole 21; during the downward movement of the inner push plate 172 and the inner partition 102, the third through hole 20 and the fourth through hole 21 are misaligned first, and then the first through hole 15 is connected with the second through hole 16 again, so that it is not easy to exchange water between the two adjacent heating areas 11.

[0047] Afterwards, the telescopic end of the moving member 19 is retracted so that the connecting frame 181 drives the push plate 171 to move toward the water outlet area 12 to abut against the outer partition 101 on the side of the heating area 11 close to the water outlet area 12. During the movement of the push plate 171, the water flows on the opposite sides of the push plate 171 are isolated, so that the push plate 171 pushes the water flow in the space close to the water outlet area 12 to the adjacent heating area 11 through the first through hole 15 and the second through hole 16, and the push plate 171 receives the water flow pouring into the adjacent heating area 11 in the space away from the water outlet area 12, so as to realize the wastewater zone change, and the heating member 14 heats the wastewater when the wastewater flows through the second through hole 16. Finally, the telescopic end of the power source 183 is extended to return the moving part 19 and the power source 183 to their initial static state, and drive the inner partition plate 102 and the inner push plate 172 to move upward. During the process, the third through hole 20 and the fourth through hole 21 are provided with a connecting seat, the first through hole 15 is first offset with the second through hole 16, and the third through hole 20 is then connected with the fourth through hole 21, so that water flow exchange is not easy to occur between the two adjacent heating zones 11.

[0048] In this embodiment, there are four isolation plates 10. In the two heating areas 11 near the water outlet area 12, the wastewater reaches and exceeds the boiling point of methanol. The methanol in the wastewater evaporates into gas and flows upward from the air guide pipe 5 to the condenser pipe 6 for condensation. In addition, a heating element 14 is also provided in the inner wall of the top of the outer shell 8 to increase the temperature of the air above the outer shell 8.

[0049] Reference Figure 1 and Figure 8 Furthermore, the air duct 5 includes a conveying section 51, a reaction section 52, a guide section 53 and a collection section 54 which are connected and communicated in sequence. The conveying section 51 is connected to the top of the outer cover shell 8 and extends vertically, and the reaction section 52 is connected to and communicated with the top of the conveying section 51 and extends horizontally. The guide section 53 is connected to and communicated with the bottom position of the reaction section 52 away from one end of the conveying section 51, and one end of the collection section 54 is connected to and communicated with the bottom of the guide section 53, and the other end of the collection section 54 extends downward to the top of the liquid collecting tank 3 and communicates with the liquid collecting tank 3.

[0050] Reference Figure 1 , Figure 8 and Fig. 9The condenser 6 includes a condensation section 61, a preheating section 62, a cooling section 63, a transmission section 64 and a water pump 65 which are connected and communicated in sequence. The condensation section 61 is in a spiral shape winding in the reaction section 52 along the length direction of the reaction section 52, and the condensation section 61 is opposite to the guide section 53. The formaldehyde gas meets the condensation section 61 and becomes water droplets, then falls into the guide section 53, and enters the collecting tank 3 through the guide section 53 and the collecting section 54 in sequence for collection. The end of the condensation section 61 away from the transmission section 51 extends from the reaction section 52 and is connected to the preheating section 62. The preheating section 62 is located between the wastewater tank 1 and the heating tank 2 and extends upward from the bottom of the wastewater tank 1 to the wastewater tank 1. The cooling section 63 is located in the wastewater tank 1 and close to the bottom of the wastewater tank 1, and the end of the cooling section 63 away from the preheating section 62 extends from the wastewater tank 1 and is connected to the transmission section 64.

[0051] The end of the transmission section 64 away from the cooling section 63 is connected to and communicated with the water inlet of the water delivery pump 65, and the end of the condensation section 61 close to the conveying section 51 extends upward out of the reaction section 52 and communicates with the water outlet of the water delivery pump 65. Thus, the water delivery pump 65 circulates the condensed water along the condensation section 61, the preheating section 62, the cooling section 63, the transmission section 64 and then to the condensation section 61.

[0052] The middle part of the liquid guide tube 4 is penetrated into the preheating section 62 and extends vertically for a distance before passing through the preheating section 62. Therefore, after the methanol gas transfers heat to the condensed water in the condensing section 61, part of the heat is transferred to the liquid guide tube 4 during the process of the condensed water flowing from the preheating section 62 to the cooling section 63, and the wastewater in the liquid guide tube 4 is preheated, and the condensed water is cooled at the same time. When the condensed water flows into the cooling section 63, the heat is transferred to the wastewater in the wastewater tank 1 for cooling, and the wastewater at the bottom of the wastewater tank 1 is preheated. When the condensed water flows from the cooling section 63 to the transmission section 64, it is cooled again by the external environment, and the cooled condensed water flows into the condensing section 61 to continue to absorb the heat of the methanol gas. Among them, the cooling section 63 and the transmission section 64 of the condenser 6 and the part of the liquid guide tube 4 located in the preheating section 62 can all be spiral, and the straight tube is shown in the figure of this application for convenience of display.

[0053] Reference Figure 8 Furthermore, the interfaces of the cooling section 63 and the transmission section 64 are connected and communicated with a liquid infusion tube 26, through which the condensed water can be replaced and increased or decreased. A plugging member 27 is detachably connected to the opening of the water delivery pipe, and the plugging member 27 is a rubber plug that is inserted into the opening of the water delivery pipe by interference fit.

[0054] Reference Figure 1 In addition, the liquid duct 4, the air duct 5 and the condenser 6 correspond to each other and have two parallel groups, and the collecting sections 54 of the two groups of air ducts 5 are connected to the same liquid collecting tank 3, and the two groups of liquid ducts 4 are relative to the heating area 11 away from the water outlet area 12.

[0055] The implementation principle of a wastewater methanol recovery device in the embodiment of the present application is as follows: the wastewater in the wastewater tank 1 is transported to the heating zone 11 far away from the water outlet zone 12 through the liquid guide tube 4, and the wastewater in the heating zone 11 is heated by the heating element 14 and heated, so that the methanol in the wastewater evaporates, and the gaseous methanol enters after condensation through the condenser 6. After the wastewater in the heating zone 11 is heated for a period of time, the moving element 19 and the power source 183 work together to drive the inner partition plate 102, the outer push plate 171 and the inner push plate 172 to move, so that the wastewater in the heating zone 11 enters the adjacent heating zone 11 through the isolation plate 10, and the wastewater in the heating zone 11 close to the water outlet zone 12 enters the water outlet zone 12, and the wastewater in the water outlet zone 12 is discharged through the water outlet pipe 13. After the wastewater is replaced, the liquid guide tube 4 is opened for a certain period of time to transport the wastewater to the heating zone 11 far away from the water outlet zone 12 again.

[0056] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A wastewater methanol recovery device, characterized in that: It comprises a waste water tank (1), a heating tank (2), a liquid collecting tank (3), a liquid guide pipe (4), an air guide pipe (5) and a condenser pipe (6); The liquid guide pipe (4) is connected to the waste water tank (1) and the heating tank (2), and a water delivery valve (7) is provided on the liquid guide pipe (4); the condenser pipe (6) has a condenser section (61) located in the air guide pipe (5); the air guide pipe (5) is connected to the heating tank (2) and the liquid collecting tank (3), the liquid tanks are opposite to each other and are connected, and condensed water circulates in the condenser pipe (6); The heating box (2) comprises an outer cover shell (8), a pool body (9) and an isolation plate (10); the outer cover shell (8) covers the pool body (9), the liquid guide tube (4) and the air guide tube (5) both extend into the outer cover shell (8) and communicate with the pool body (9); the isolation plate (10) is arranged in the pool body (9) and has a plurality of them, so as to divide the pool body (9) into a plurality of heating zones (11) and a water outlet zone (12); the plurality of heating zones (11) and the water outlet zone (12) are arranged in sequence, and the water outlet zone (12) is communicated with a water outlet tube (13); the isolation plate (10) has a heating element (14) in it, and the pool body (9) has a mobilization device, so as to mobilize wastewater in the heating zone (11) to an adjacent heating zone (11), and mobilize wastewater in the heating zone (11) close to the water outlet zone (12) to the water outlet zone (12).

2. A wastewater methanol recovery device according to claim 1, characterized in that: The isolation plate (10) comprises an outer partition (101) and an inner partition (102), the inner partition (102) slides up and down in the outer partition (101), and the outer partition (101) is provided with a first through hole (15) in an array, and the inner partition (102) is provided with a second through hole (16) in an array, the first through hole (15) and the second through hole (16) correspond one to one, and when the inner partition (102) moves up and down, the first through hole (15) and the second through hole (16) can be adjusted to a connected state or a misaligned state; The mobilizing device comprises a pushing plate (17), an adjusting member (18) and a moving member (19); the pushing plates (17) correspond one-to-one with the heating zones (11) and are located in the heating zones (11); each pushing plate (17) comprises an outer pushing plate (171) and an inner pushing plate (172); the inner pushing plate (172) slides up and down in the outer pushing plate (171); a third through hole (20) is formed in an array on the outer pushing plate (171); a fourth through hole (21) is formed in an array on the inner pushing plate (172); the third through hole (20) corresponds one-to-one with the fourth through hole (21); when the inner pushing plate (172) moves up and down, the third through hole (20) and the fourth through hole (21) can be adjusted to a connected state or a misaligned state; The adjusting member (18) is used to adjust the position of the inner partition (102) relative to the outer partition (101), and simultaneously adjust the position of the inner push plate (172) relative to the outer push plate (171), so that when the first through hole (15) and the second through hole (16) are misaligned, the third through hole (20) and the fourth through hole (21) are communicated, and when the third through hole (20) and the fourth through hole (21) are misaligned, the first through hole (15) and the second through hole (16) are communicated; The moving member (19) is installed in the pool body (9) and is used to drive the push plate (17) to move in the heating zone (11) along the distribution direction of the heating zone (11); and when the third through hole (20) and the fourth through hole (21) are misaligned, the push plate (17) separates the inner cavity of the heating zone (11) along the distribution direction of the heating zone (11).

3. A wastewater methanol recovery device according to claim 2, characterized in that: The adjusting member (18) comprises a connecting frame (181), a connecting rod (182) and a power source (183); the connecting frame (181) is connected to all the inner push plates (172) at the same time; one end of the connecting rod (182) is connected to the inner baffle (102), and the end of the connecting rod (182) away from the inner baffle (102) slides on the connecting frame (181) along the moving direction of the push plate (17); the power source (183) is installed on the outer wall of the pool body (9), and the output end of the power source (183) is connected to the moving member (19) to provide power for the moving member (19) and the connecting frame (181) to move up and down.

4. A wastewater methanol recovery device according to claim 3, characterized in that: The output end of the moving member (19) is connected to the connecting frame (181), and the output end of the moving member (19) can be extended and retracted along the distribution direction of the heating zone (11).

5. A wastewater methanol recovery device according to claim 3, characterized in that: The connecting rod (182) has a limiting portion (22) at one end close to the connecting frame (181), and the connecting frame (181) has a limiting groove (23) for the limiting portion (22) to slide along the moving direction of the pushing plate (17), and the width of the limiting portion (22) at the end away from the connecting rod (182) is greater than the width of the limiting portion (22) at the end close to the connecting rod (182).

6. A wastewater methanol recovery device according to claim 2, characterized in that: A guide strip (24) extending along the moving direction of the push plate (17) is protruded from the inner wall of the pool body (9), and the outer push plate (171) is formed with a guide groove (25) for slidingly enclosing the guide strip (24).

7. A wastewater methanol recovery device according to claim 2, characterized in that: The heating element (14) is located in the inner partition (102) and is close to the second through hole (16), and when the third through hole (20) is connected to the fourth through hole (21), the heating element (14) is simultaneously opposite to the first through hole (15) and the second through hole (16).

8. A wastewater methanol recovery device according to claim 1, characterized in that: The condenser tube (6) further comprises a cooling section (63), and the cooling section (63) is located in the waste water tank (1).

9. A wastewater methanol recovery device according to claim 8, characterized in that: The condenser tube (6) further comprises a preheating section (62), wherein the preheating section (62) is located between the cooling section (63) and the condensing section (61); when the condensed water flows out of the condensing section (61), it passes through the preheating section (62) and the condensing section (61) in sequence and then flows into the condensing section (61); and the liquid guide tube (4) comprises a portion located in the preheating section (62).

10. A wastewater methanol recovery device according to claim 9, characterized in that: The condenser tube (6) is provided with a liquid infusion tube (26), and the condenser tube (6) is detachably connected to a sealing member (27) at the liquid infusion tube (26).

Images