Recovery device of byproduct ethanol in synthesis of coal to ethylene glycol

Abstract

The utility model discloses a coal is glycol synthesis byproduct ethanol's recovery unit, including product tank, the bottom intercommunication of product tank has the connecting pipe no.

Description

Technical Field

[0001] This utility model relates to the field of ethanol recovery technology, specifically to a device for recovering ethanol, a byproduct of coal-to-ethylene glycol synthesis. Background Technology

[0002] In the modern coal chemical industry system, coal-to-ethylene glycol, as a core technological route to achieve clean and efficient conversion of coal resources and alleviate dependence on ethylene glycol imports, has become an important development direction in my country's energy and chemical industry. Its production process uses coal as raw material, and obtains syngas through gasification, conversion, and purification. Then, through catalytic coupling and hydrogenation, ethylene glycol is produced as the main product. However, due to the limitations of catalyst selectivity, reaction process conditions, and trace impurities in the raw materials, in addition to the target product ethylene glycol, ethanol, methanol, acetaldehyde, and various byproducts are also generated in the reaction system. Among them, ethanol is usually one of the most abundant byproducts due to its stable formation pathway.

[0003] Traditional separation methods, such as molecular sieve adsorption equipment, have high steam consumption, large footprint, and low single-pass yield. Currently used extractive distillation, adsorption separation, and traditional dehydration methods are complex, energy-intensive, and polluting. To solve these problems, some devices use distillation coupling technology for purification and dehydration, using distillation to recover ethanol and reduce recovery energy consumption, and then removing water from the ethanol through pervaporation technology. However, although the use of new membrane separation technology has reduced energy consumption and improved separation efficiency to some extent, the cost of membrane modules is high, their service life is limited, and the cost of replacing membrane modules and the difficulty of maintenance are significant. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a device for recovering ethanol, a byproduct of coal-to-ethylene glycol synthesis, aiming to improve the problems of complex processes, high energy consumption, and serious pollution associated with commonly used extraction distillation, adsorption separation, and traditional dehydration methods in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a device for recovering ethanol, a byproduct of coal-to-ethylene glycol synthesis, comprising a product tank, a connecting pipe 1 connected to the bottom of the product tank, a pressure pump connected to the top left side of the connecting pipe 1, a connecting pipe 2 connected to the top of the pressure pump, an outer tank connected to the left side of the connecting pipe 2, an inner tank fixedly connected inside the outer tank, a heating pipe provided between the adjacent outer and inner tanks, a filter plate fixedly connected to the upper middle part of the inner wall of the inner tank, a top plate fixedly connected to the top of the outer tank, a connecting pipe 3 connected to the top left side of the top of the top plate, a cooling pipe connected to the bottom left side of the connecting pipe 3, a collection tank connected to the bottom of the cooling pipe, and a cleaning mechanism provided on the inner wall of the inner tank for cleaning and discharging waste material adhering to the inner tank.

[0006] As a further description of the above technical solution: The cleaning mechanism includes a motor slot, which is located at the top of the top plate. A motor is fixedly connected to the inner wall of the motor slot. A rotating shaft is fixedly connected to the output end of the motor. A crossbar is fixedly connected to the upper middle part of the rotating shaft. Connecting rods are fixedly connected to the front and rear sides of the crossbar. A scraper is fixedly connected to the outer wall of the connecting rod. A connecting plate is fixedly connected to the bottom of the rotating shaft. Multiple scrapers are fixedly connected to the bottom of the connecting plate.

[0007] As a further description of the above technical solution: A fixing block is fixedly connected to the outer wall of the collection tank, and the right side of the fixing block is fixedly connected to the left side of the outer tank.

[0008] As a further description of the above technical solution: A faucet is fixedly connected to the lower left side of the collection tank, and a hole is opened in the middle of the bottom of the outer tank.

[0009] As a further description of the above technical solution: A waste pipe is fixedly connected to the inner wall of the hole, and a handwheel is rotatably connected to the front side of the waste pipe.

[0010] As a further description of the above technical solution: The bottom of the outer tank is fixedly connected to two support legs 2, and the bottom of the product tank is fixedly connected to multiple support legs 1.

[0011] As a further description of the above technical solution: The bottom of the second support leg is fixedly connected to a base plate, and the bottom of the first support leg is fixedly connected to the top of the base plate.

[0012] As a further description of the above technical solution: The product tank is connected to a liquid inlet pipe on the right side, and the bottom plate has round holes at the four corners of the top.

[0013] This utility model has the following beneficial effects: 1. In this utility model, by-products are transported to the inner tank by a pressure pump, and moderate heating by a heating tube can quickly promote the evaporation of ethanol in the by-products. The evaporated ethanol gas is filtered by a filter plate to remove impurities, and then cooled by a cooling tube to be converted into liquid ethanol that flows into the collection tank. This can realize the recovery of ethanol, and the purity of the recovered ethanol can be improved through the filtration process, effectively improving the utilization rate of ethanol resources and reducing the problem of high energy consumption during the recovery process.

[0014] 2. In this utility model, after the device has been used for a long time, the cleaning function can be started without disassembling the device. The motor drives the rotating shaft, crossbar, connecting rod and scraper to rotate in linkage, which can scrape off the waste material attached to the inner tank wall. At the same time, the rotation of the connecting plate and the scraper can gather the scraped waste material to the center and discharge it through the hole, saving the time and labor cost of manual cleaning. It can also remove the residual waste inside, and avoid the accumulation of waste material affecting the subsequent use efficiency of the device and the quality of ethanol recovery. Attached Figure Description

[0015] Figure 1 This is a front perspective view of the device for recovering ethanol, a byproduct of coal-to-ethylene glycol synthesis, as proposed in this utility model. Figure 2 This is a partial structural exploded view of the device for recovering ethanol, a byproduct of coal-to-ethylene glycol synthesis, proposed in this utility model. Figure 3 This is a partial structural diagram of the device for recovering ethanol, a byproduct of coal-to-ethylene glycol synthesis, proposed in this utility model. Figure 4 This is a partial structural diagram of the device for recovering ethanol, a byproduct of coal-to-ethylene glycol synthesis, as proposed in this utility model. Figure 5 This is a partial structural schematic diagram of the device for recovering ethanol, a byproduct of coal-to-ethylene glycol synthesis, as proposed in this utility model.

[0016] In the diagram: 1. Product tank; 2. Cleaning mechanism; 201. Motor slot; 202. Motor 1; 203. Rotating shaft; 204. Crossbar; 205. Connecting rod; 206. Scraper; 207. Connecting plate; 208. Scraper; 3. Connecting pipe 1; 4. Pressure pump; 5. Connecting pipe 2; 6. Outer tank; 7. Heating pipe; 8. Inner tank; 9. Top plate; 10. Filter plate; 11. Connecting pipe 3; 12. Cooling pipe; 13. Collection tank; 14. Fixing block; 15. Faucet; 16. Hole; 17. Waste pipe; 18. Handwheel; 19. Support leg 1; 20. Support leg 2; 21. Base plate; 22. Liquid inlet pipe; 23. Round hole. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 3An embodiment of this utility model provides a device for recovering ethanol, a byproduct of coal-to-ethylene glycol synthesis, comprising a product tank 1, a connecting pipe 3 connected to the bottom of the product tank 1, a pressure pump 4 connected to the top left side of the connecting pipe 3, a connecting pipe 5 connected to the top of the pressure pump 4, an outer tank 6 connected to the left side of the connecting pipe 5, an inner tank 8 fixedly connected inside the outer tank 6, a heating pipe 7 provided between the outer tank 6 and the inner tank 8, a filter plate 10 fixedly connected to the upper middle part of the inner wall of the inner tank 8, a top plate 9 fixedly connected to the top of the outer tank 6, a connecting pipe 11 connected to the top left side of the top of the top plate 9, a cooling pipe 12 connected to the bottom left side of the connecting pipe 11, a collection tank 13 connected to the bottom of the cooling pipe 12, a cleaning mechanism 2 provided on the inner wall of the inner tank 8, the cleaning mechanism 2 being used to clean and discharge waste adhering to the inner tank 8, two support legs 20 fixedly connected to the bottom of the outer tank 6, and multiple support legs 19 fixedly connected to the bottom of the product tank 1; Specifically, the bottom of product tank 1 is connected to connecting pipe 3, and the top left side of connecting pipe 3 is connected to pressure pump 4 to ensure smooth transmission of by-product liquid. The top of pressure pump 4 is connected to connecting pipe 5, and the left side of connecting pipe 5 is connected to outer tank 6, forming a complete transmission structure. An inner tank 8 is fixedly connected inside outer tank 6, with a certain space between them. A heating pipe 7 is installed in the adjacent space between outer tank 6 and inner tank 8 to heat the by-product liquid. A filter plate 10 is fixedly connected to the upper part of the inner wall of inner tank 8 to filter impurities in gaseous ethanol. A top plate is fixedly connected to the top of outer tank 6. 9. A connecting pipe 3 11 is connected to the top left side of the top plate 9. The bottom left side of the connecting pipe 3 11 is connected to the cooling pipe 12. The cooling pipe 12 is used to liquefy gaseous ethanol. The bottom of the cooling pipe 12 is connected to the collection tank 13, which is used to collect the processed ethanol liquid. A cleaning mechanism 2 is also provided on the inner wall of the inner tank 8. The cleaning mechanism 2 is used to clean and discharge the waste material attached to the inner wall of the inner tank 8 and keep the inner tank 8 clean. In order to enhance the stability of the entire device, two support legs 20 are fixedly connected to the bottom of the outer tank 6, while multiple support legs 19 are fixedly connected to the bottom of the product tank 1 to ensure that the device is stable and reliable during operation.

[0019] Please see the appendix Figure 2 and attached Figure 3The cleaning mechanism 2 includes a motor slot 201, which is located on the top of the top plate 9. A motor 202 is fixedly connected to the inner wall of the motor slot 201. A rotating shaft 203 is fixedly connected to the output end of the motor 202. A crossbar 204 is fixedly connected to the upper middle part of the rotating shaft 203. Connecting rods 205 are fixedly connected to the front and rear sides of the crossbar 204. A scraper 206 is fixedly connected to the outer wall of the connecting rod 205. A connecting plate 207 is fixedly connected to the bottom of the rotating shaft 203. Multiple scrapers 208 are fixedly connected to the bottom of the connecting plate 207. A waste pipe 17 is fixedly connected to the inner wall of the hole 16. A handwheel 18 is rotatably connected to the front side of the waste pipe 17. Specifically, a motor 202 is fixedly connected to the inner wall of the motor slot 201. The motor slot 201 is used to fix the motor 202. The output end of the motor 202 is fixedly connected to the rotating shaft 203. A crossbar 204 is fixedly connected to the upper middle part of the rotating shaft 203. The crossbar 204 is used to fix the connecting rod 205. A scraper 206 is fixedly connected to the outer wall of the connecting rod 205. The scraper 206 is used to scrape off the waste material attached inside to ensure the stability and efficiency of subsequent work. A connecting plate 207 is fixedly connected to the bottom of the rotating shaft 203. Multiple scrapers 208 are fixedly connected to the bottom of the connecting plate 207 to facilitate moving the scraped waste material towards the inner center. A waste pipe 17 is fixedly connected to the inner wall of the hole 16. A handwheel 18 is rotatably connected to the front side of the waste pipe 17 so that the operator can easily turn the handwheel 18 to control the operation of the waste pipe 17 when needed. Please see the appendix Figure 1 and attached Figure 2 The bottom of the second support leg 20 is fixedly connected to the base plate 21, the bottom of the first support leg 19 is fixedly connected to the top of the base plate 21, the right side of the product tank 1 is connected to the liquid inlet pipe 22, and the four corners of the top of the base plate 21 are provided with round holes 23. Specifically, the bottom of support leg 20 is connected to the base plate 21 to ensure the stability of the structure. The bottom of support leg 19 is also fixedly connected to the top of the base plate 21 to form a stable support. The right side of the product tank 1 is provided with a liquid inlet pipe 22, which is connected to the inside of the product tank 1 for the input of by-products. The four corners of the top of the base plate 21 are provided with round holes 23. The round holes 23 facilitate installation and fixation, and enhance the flexibility of the overall installation.

[0020] Please see the appendix Figure 1 and attached Figure 2 A fixing block 14 is fixedly connected to the outer wall of the collection tank 13. The right side of the fixing block 14 is fixedly connected to the left side of the outer tank 6. A faucet 15 is fixedly connected to the lower left side of the collection tank 13. A hole 16 is opened in the middle of the bottom end of the outer tank 6. Specifically, a fixing block 14 is fixedly connected to the outer wall of the collection tank 13. The fixing block 14 is fixedly connected to the left side of the outer tank 6 to ensure that the collection tank 13 and the outer tank 6 are fixedly connected. A faucet 15 is fixedly connected to the lower left side of the collection tank 13. The faucet 15 facilitates the control of the flow of ethanol liquid. A hole 16 is opened in the middle of the bottom end of the outer tank 6. The hole 16 is used for the discharge of waste liquid and waste materials to meet the needs of use.

[0021] Working principle: When the by-product enters the product tank 1 through the inlet pipe 22, the pressure pump 4 is started, and the product in the product tank 1 enters the inner tank 8 through the connecting pipe 3 and the connecting pipe 5. At the same time, the heating pipe 7 is started to moderately heat the by-product inside, so that the by-product can quickly volatilize ethanol. The volatilized ethanol will be further filtered through the filter plate 10. Then the ethanol gas will enter the connecting pipe 11 and be cooled when passing through the cooling pipe 12. The cooled liquid ethanol will flow into the collection tank 13. Through the above series of steps, the ethanol is recovered and the problem of high energy consumption during the recovery process is reduced. After prolonged use of the device, when it is necessary to clean the waste adhering to the inner tank 8, the motor 202 is started, causing the rotating shaft 203 to rotate. The rotation of the rotating shaft 203, in turn, causes the crossbar 204 to rotate. The rotation of the crossbar 204 causes the connecting rod 205 to rotate along with the crossbar 204, which in turn causes the scraper 206 to rotate, thereby scraping off the dirt on the inner tank 8. The scraped waste is moved towards the center by the rotation of the connecting plate 207 and the scraper 208, and then discharged downward through the hole 16, ultimately achieving the cleaning and discharge of the residual waste inside.

[0022] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for recovering ethanol, a byproduct of coal-to-ethylene glycol synthesis, comprising a product tank (1), characterized in that: The bottom of the product tank (1) is connected to a connecting pipe 1 (3), the top left side of the connecting pipe 1 (3) is connected to a pressure pump (4), the top of the pressure pump (4) is connected to a connecting pipe 2 (5), the left side of the connecting pipe 2 (5) is connected to an outer tank (6), the inner tank (8) is fixedly connected inside the outer tank (6), a heating pipe (7) is provided between the outer tank (6) and the inner tank (8), a filter plate (10) is fixedly connected to the upper part of the inner wall of the inner tank (8), a top plate (9) is fixedly connected to the top of the outer tank (6), a connecting pipe 3 (11) is connected to the top left side of the top of the top plate (9), a cooling pipe (12) is connected to the bottom left side of the connecting pipe 3 (11), a collection tank (13) is connected to the bottom of the cooling pipe (12), and a cleaning mechanism (2) is provided on the inner wall of the inner tank (8). The cleaning mechanism (2) is used to clean and discharge the waste material attached to the inner tank (8).

2. The apparatus for recovering ethanol, a byproduct of coal-to-ethylene glycol synthesis, according to claim 1, is characterized in that: The cleaning mechanism (2) includes a motor slot (201), which is located at the top of the top plate (9). A motor (202) is fixedly connected to the inner wall of the motor slot (201). A rotating shaft (203) is fixedly connected to the output end of the motor (202). A crossbar (204) is fixedly connected to the upper middle part of the rotating shaft (203). A connecting rod (205) is fixedly connected to both the front and rear sides of the crossbar (204). A scraper (206) is fixedly connected to the outer wall of the connecting rod (205). A connecting plate (207) is fixedly connected to the bottom of the rotating shaft (203). Multiple scrapers (208) are fixedly connected to the bottom of the connecting plate (207).

3. The apparatus for recovering ethanol, a byproduct of coal-to-ethylene glycol synthesis, according to claim 1, is characterized in that: The outer wall of the collection tank (13) is fixedly connected to a fixing block (14), and the right side of the fixing block (14) is fixedly connected to the left side of the outer tank (6).

4. The apparatus for recovering ethanol, a byproduct of coal-to-ethylene glycol synthesis, according to claim 1, is characterized in that: A faucet (15) is fixedly connected to the lower left side of the collection tank (13), and a hole (16) is opened in the middle of the bottom end of the outer tank (6).

5. The apparatus for recovering ethanol, a byproduct of coal-to-ethylene glycol synthesis, according to claim 4, is characterized in that: The inner wall of the hole (16) is fixedly connected to a waste pipe (17), and a handwheel (18) is rotatably connected to the front side of the waste pipe (17).

6. The apparatus for recovering ethanol, a byproduct of coal-to-ethylene glycol synthesis, according to claim 1, is characterized in that: The bottom of the outer tank (6) is fixedly connected to two support legs (20), and the bottom of the product tank (1) is fixedly connected to multiple support legs (19).

7. The apparatus for recovering ethanol, a byproduct of coal-to-ethylene glycol synthesis, according to claim 6, is characterized in that: The bottom of the second support leg (20) is fixedly connected to the base plate (21), and the bottom of the first support leg (19) is fixedly connected to the top of the base plate (21).

8. The apparatus for recovering ethanol, a byproduct of coal-to-ethylene glycol synthesis, according to claim 7, is characterized in that: The product tank (1) is connected to the liquid inlet pipe (22) on the right side, and the bottom plate (21) has round holes (23) at the four corners of the top.

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