BDO organic waste liquid treatment device
By combining a tank heater and a filter screen, the problems of resource waste and environmental pollution in BDO waste liquid treatment are solved, and efficient classification, separation and resource recovery of waste liquid are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-23
- Publication Date
- 2026-04-21
AI Technical Summary
Existing BDO organic waste liquid treatment methods result in resource waste and environmental pollution, and make it difficult to effectively separate and recover valuable chemical raw materials.
The system employs a combination of tanks, heaters, steam inlets, ball valves, and filters to separate different components in BDO waste liquid through distillation and filtration, and to separate nitrates through nitrate reaction, thereby achieving efficient resource recovery.
This method enables efficient classification and treatment of BDO waste liquid, reduces environmental pollution, improves resource utilization, and recovers reusable organic products.
Smart Images
Figure CN224147896U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of BDO waste liquid treatment technology, and in particular to a BDO organic waste liquid treatment device. Background Technology
[0002] 1,4-Butanediol, also known as BDO, is a widely used fine chemical raw material. Since its introduction to China from the United States in the early 21st century, its annual production has rapidly increased from tens of thousands of tons to millions of tons. BDO is produced through methods such as the maleic anhydride method, the acetylene-aldehyde method, and the allyl alcohol method, but the acetylene-aldehyde method is the most commonly used. The acetylene-aldehyde method for producing 1,4-butanediol involves the reaction of acetylene with formaldehyde to produce 1,4-butynediol, which is then hydrogenated to saturation under high pressure to produce 1,4-butanediol. During this process, tar and sodium salts are produced because the raw materials need to be purified with concentrated sulfuric acid and a buffer solution composed of sodium hydroxide and sodium carbonate is needed to adjust the pH value of the reaction between formaldehyde and acetylene. To obtain high-purity 1,4-butanediol, the approximately 54% concentration 1,4-butanediol solution is concentrated, desalted, and subjected to distillation processes such as removal of low-boiling and high-boiling components to achieve 99.8% purity 1,4-butanediol. To ensure product purity, a portion of the material needs to be emptied and replaced in each distillation column during the distillation process. The purpose is to prevent impurities from accumulating in the column and affecting product quality. The replaced material is referred to as "BDO organic waste liquid" in the process.
[0003] The production of BDO generates a large amount of high-concentration organic waste liquid, containing butanol, methanol, propanol, propargyl alcohol, butynediol, water, and sodium salts. Under given component conditions, this BDO organic waste liquid easily forms a two-phase and low-boiling azeotropic mixture, making it difficult to separate the various components of the azeotrope within a distillation column.
[0004] In recent years, with the vigorous development of products such as 1,4-butanediol, the treatment of its by-product organic waste liquid has become an urgent problem. The organic waste liquid generated from the production of 1,4-butanediol contains over 50% recyclable alcoholic chemical raw materials. Current treatment methods mostly involve incineration, which not only wastes the recyclable organic products but also pollutes the atmosphere and wastes resources. Utility Model Content
[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a BDO organic waste liquid treatment device.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a BDO organic waste liquid treatment device, comprising a waste liquid tank, a nitric acid box fixedly connected to the left side of the waste liquid tank, water pumps fixedly connected to the bottom front sides of both the waste liquid tank and the nitric acid box, delivery pipes fixedly connected to the output ends of both water pumps, a top cover fixedly connected to the other end of the delivery pipes, a tank body slidably connected to the bottom of the top cover, a uniformly distributed heater installed inside the tank body, a temperature sensor fixedly connected to the bottom of the top cover, steam inlets fixedly connected to the left and right sides of the top center of the top cover, ball valves rotatably connected inside the two steam inlets, and motors fixedly connected to the left and right sides of the top center of the top cover, with the output ends of both motors fixedly connected to the ball valves.
[0007] As a further description of the above technical solution:
[0008] A tailing pipe is fixedly connected to the bottom right side of the tank. A separating box is fixedly connected to the other end of the tailing pipe. A first roller is rotatably connected to the front of the separating box. A filter screen is fixedly connected to the upper inside of the separating box. Electric push rods are fixedly connected to the four corners of the top of the separating box. Pressure blocks are fixedly connected to the top of each electric push rod. A reaction box is set behind the separating box. A second roller is rotatably connected to the top inside the reaction box. The second roller and the first roller are both fitted with a filter cloth.
[0009] As a further description of the above technical solution:
[0010] Both steam inlets are fixedly connected to a steam pipe at their top, and both steam pipes are fixedly connected to a condenser at their other end.
[0011] As a further description of the above technical solution:
[0012] A return water pipe is fixedly connected to the top right side of the condenser, and a water storage tank is fixedly connected to the other end of the return water pipe. A water storage tank pump is fixedly connected to the bottom left side of the water storage tank, and an inlet pipe is fixedly connected to the output end of the water storage tank pump. The other end of the inlet pipe is fixedly connected to the bottom left side of the condenser.
[0013] As a further description of the above technical solution:
[0014] The condenser is fixedly connected to the left and right sides of the bottom front side of the condenser. The output ends of the two condenser water pumps are fixedly connected to condenser pipes, and the other ends of the two condenser pipes are fixedly connected to collection boxes.
[0015] As a further description of the above technical solution:
[0016] A control panel is fixedly connected to the bottom left side of the tank.
[0017] As a further description of the above technical solution:
[0018] A filter screen is fixedly connected to the bottom inside the reaction box.
[0019] As a further description of the above technical solution:
[0020] Small water pumps are fixedly connected to the bottom left and right sides of the reaction box. The output ends of the two small water pumps are fixedly connected to return pipes, and the other ends of the two return pipes are fixedly connected to the left and right sides of the reaction box.
[0021] This utility model has the following beneficial effects:
[0022] 1. In this utility model, the combined use of a tank, heater, steam interface and ball valve enables the classified extraction and treatment of BDO waste liquid, which has the benefits of reducing environmental pollution and resource waste.
[0023] 2. In this utility model, the separation and fine washing of nitrates are achieved by using a combination of a separation box, a reaction box, a filter cloth, and a filter screen, which has the benefit of increasing resource utilization. Attached Figure Description
[0024] Figure 1 This is a front view of a BDO organic waste liquid treatment device proposed in this utility model;
[0025] Figure 2 This is a rear view of a BDO organic waste liquid treatment device proposed in this utility model;
[0026] Figure 3 This is a schematic diagram of the condensation structure of a BDO organic waste liquid treatment device proposed in this utility model;
[0027] Figure 4 This is a schematic diagram of the solid-liquid separation structure of a BDO organic waste liquid treatment device proposed in this utility model;
[0028] Figure 5 This is a schematic diagram of the tank structure of a BDO organic waste liquid treatment device proposed in this utility model;
[0029] Figure 6 This is a top and bottom view of a BDO organic waste liquid treatment device proposed in this utility model;
[0030] Figure 7 This is a schematic diagram of the valve structure of a BDO organic waste liquid treatment device proposed in this utility model.
[0031] Legend:
[0032] 1. Waste liquid tank; 2. Nitric acid box; 3. Water pump; 4. Infusion pipe; 5. Tank body; 6. Steam pipe; 7. Condensation box; 8. Water inlet pipe; 9. Water return pipe; 10. Water storage tank; 11. Top cover; 12. Temperature sensor; 13. Heater; 14. Steam interface; 15. Ball valve; 16. Separator box; 17. First roller; 18. Filter screen; 19. Electric push rod; 20. Press block; 21. Filter cloth; 22. Second roller; 23. Reaction box; 24. Filter screen; 25. Small water pump; 26. Return pipe; 27. Motor; 28. Condensation box water pump; 29. Condensation pipe; 30. Collection box; 31. Water storage tank water pump; 32. Control panel; 33. Tail discharge pipe. Detailed Implementation
[0033] 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.
[0034] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0035] Reference Figure 1-7This utility model provides an embodiment of a BDO organic waste liquid treatment device, comprising a waste liquid tank 1, a nitric acid box 2 fixedly connected to the left side of the waste liquid tank 1, and water pumps 3 fixedly connected to the bottom front sides of both the waste liquid tank 1 and the nitric acid box 2. Each of the two water pumps 3 has a delivery pipe 4 fixedly connected to its output end, and a top cover 11 fixedly connected to the other end of the delivery pipe 4. A tank body 5 is slidably connected to the bottom of the top cover 11. The BDO organic waste liquid in the waste liquid tank 1 and the nitric acid in the nitric acid box 2 will both enter the tank body 5 through the water pumps 3 and their respective delivery pipes 4. A uniformly distributed heater 13 is installed inside the tank body 5 to heat the liquid inside. A temperature sensor 12 is fixedly connected to the bottom of the top cover 11, which can detect the temperature inside the tank body 5 and control the heater 13 to regulate the temperature. Steam inlets 14 are fixedly connected to the top center of the top cover 11 on both the left and right sides. Ball valves 15 are rotatably connected inside the two steam inlets 14. Motors 27 are fixedly connected to the top center of the top cover 11 on both the left and right sides. The output ends of the two motors 27 are fixedly connected to the ball valves 15. The motors 27 will drive the ball valves 15 to rotate inside the steam inlets 14, thereby controlling the flow of steam.
[0036] A tail pipe 33 is fixedly connected to the bottom right side of tank 5. A separating box 16 is fixedly connected to the other end of the tail pipe 33. A filter screen 18 is fixedly connected to the upper side inside the separating box 16. A first roller 17 is rotatably connected to the front of the separating box 16. A second roller 22 is rotatably connected to the top inside the reaction box 23. The second roller 22 and the first roller 17 are fitted with a filter cloth 21. The remaining solution in tank 5 flows into the separating box 16 through the tail pipe 33 and is sprayed onto the filter cloth 21 above the filter screen 18. Electric push rods 19 are fixedly connected to the four corners of the top of the separating box 16. Each electric push rod 19 has a pressure block 20 fixedly connected to its top. When the solution on the filter cloth 21 accumulates to a certain amount, the electric push rods 19 move the pressure block 20 downwards, squeezing out the liquid from the solution to separate the solid and liquid. A reaction box 23 is located behind the separating box 16 and is filled with ethanol. A filter screen 24 is fixedly connected to the bottom inside the reaction chamber 23. Nitrates washed with ethanol will be deposited on the filter screen 24, and clean ethanol will be filtered out. Small water pumps 25 are fixedly connected to the left and right sides of the bottom inside the reaction chamber 23. The output ends of the two small water pumps 25 are fixedly connected to return pipes 26, and the other ends of the two return pipes 26 are fixedly connected to the left and right sides of the reaction chamber 23. The filtered ethanol will return to the upper part of the reaction chamber 23 for reuse through the small water pumps 25 and the return pipes 26. A return water pipe 9 is fixedly connected to the top right side of the condenser 7. The other end of the return water pipe 9 is fixedly connected to a water storage tank 10. A water storage tank pump 31 is fixedly connected to the bottom left side of the water storage tank 10. An inlet water pipe 8 is fixedly connected to the output end of the water storage tank pump 31, and the other end of the inlet water pipe 8 is fixedly connected to the bottom left side of the condenser 7. Cold water in the water storage tank 10 enters the condenser 7 via the water storage tank pump 31 and the inlet water pipe 8, and then returns to the water storage tank 10 via the return water pipe 9 to complete the circulation. Condenser pumps 28 are fixedly connected to both sides of the bottom front side of the condenser 7. Condensation pipes 29 are fixedly connected to the output ends of the two condenser pumps 28, and collection boxes 30 are fixedly connected to the other ends of the two condensation pipes 29. The condensed solution enters the collection box 30 via the condenser pumps 28 and the condensation pipes 29. A control panel 32 is fixedly connected to the bottom left side of the tank 5. The control panel 32 can control the working status of the entire equipment.
[0037] Working principle: The BDO organic waste liquid in the waste liquid tank 1 will enter the tank body 5 through the corresponding water pump 3 and the delivery pipe 4. The temperature sensor 12 and the heater 13 will work to heat the temperature inside the tank body 5 to 100°C. At this time, methanol, propanol and water will vaporize. A motor 27 on the top cover 11 will drive the ball valve 15 to rotate and connect a steam interface 14 to the corresponding steam pipe 6. The vapor composed of methanol, propanol and water will enter the condenser 7 through the steam pipe 6 and condense into a solution. Then, it will enter a collection box 30 through the condenser water pump 28 and the condenser pipe 29. After condensation is completed, the corresponding steam interface 14 will be closed. Next, heater 13 heats the temperature inside tank 5 to 160°C. At this time, butanol and propargyl alcohol will vaporize. Another motor 27 on top cover 11 will drive ball valve 15 to rotate and connect another steam port 14 to the corresponding steam pipe 6. The vapor composed of butanol and propargyl alcohol will enter the condenser 7 through steam pipe 6 and condense into a solution. Then, it will enter another collection box 30 through condenser water pump 28 and condenser pipe 29. After condensation is completed, the corresponding steam port 14 will be closed. At this point, the solution in tank 5 still contains butynediol and sodium salt. Nitric acid in nitric acid box 2 will enter tank 5 through the corresponding water pump 3 via the infusion pipe 4 and react with the sodium salt in the solution to produce nitrate. The mixed solution of nitrate and butynediol will flow into the separatory box 16 through the tail pipe 33 and be sprayed onto the filter cloth 21 above the filter screen 18. When the solution on the filter cloth 21 accumulates to a certain amount, the electric push rod 19 pushes down the pressure block 20 to squeeze out the butynediol liquid in the solution, thereby separating the nitrate. The first roller 17 and the second roller 22 rotate, driving the filter cloth 21 to move and placing the separated nitrate into the reaction box 23. Adding ethanol solution to the reaction box 23 can finely wash the nitrate, thereby obtaining nitrate with higher purity.
[0038] 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 BDO organic waste liquid treatment device comprising a waste liquid tank (1), characterized in that: A nitric acid box (2) is fixedly connected to the left side of the waste liquid tank (1). A water pump (3) is fixedly connected to the bottom front side of both the waste liquid tank (1) and the nitric acid box (2). A delivery pipe (4) is fixedly connected to the output end of both water pumps (3). A top cover (11) is fixedly connected to the other end of the delivery pipe (4). A tank body (5) is slidably connected to the bottom of the top cover (11). A heater (13) with even distribution is provided inside the tank body (5). A temperature sensor (12) is fixedly connected to the bottom of the top cover (11). A steam interface (14) is fixedly connected to the left and right sides of the top center of the top of the top cover (11). A ball valve (15) is rotatably connected inside the two steam interfaces (14). A motor (27) is fixedly connected to the left and right sides of the top center of the top of the top of the top cover (11). The output ends of the two motors (27) are fixedly connected to the ball valve (15).
2. The BDO organic waste liquid treatment device according to claim 1, characterized in that: A tail pipe (33) is fixedly connected to the bottom right side of the tank (5). A liquid separator (16) is fixedly connected to the other end of the tail pipe (33). A first roller (17) is rotatably connected to the front side of the liquid separator (16). A filter screen (18) is fixedly connected to the upper inside of the liquid separator (16). An electric push rod (19) is fixedly connected to the four corners of the top of the liquid separator (16). A pressure block (20) is fixedly connected to the top of each electric push rod (19). A reaction box (23) is provided behind the liquid separator (16). A second roller (22) is rotatably connected to the top inside the reaction box (23). The second roller (22) and the first roller (17) are together fitted with a filter cloth (21).
3. The BDO organic waste liquid treatment device according to claim 1, characterized in that: The top of each of the two steam inlets (14) is fixedly connected to a steam pipe (6), and the other end of each of the two steam pipes (6) is fixedly connected to a condenser box (7).
4. The BDO organic waste liquid treatment device according to claim 3, characterized in that: A return water pipe (9) is fixedly connected to the top right side of the condenser (7), and a water storage tank (10) is fixedly connected to the other end of the return water pipe (9). A water storage tank pump (31) is fixedly connected to the bottom left side of the water storage tank (10), and an inlet pipe (8) is fixedly connected to the output end of the water storage tank pump (31). The other end of the inlet pipe (8) is fixedly connected to the bottom left side of the condenser (7).
5. The BDO organic waste liquid treatment device according to claim 3, characterized in that: The condenser (7) is fixedly connected to the left and right sides of the bottom front side with condenser water pumps (28), and the output ends of the two condenser water pumps (28) are fixedly connected to condenser pipes (29), and the other ends of the two condenser pipes (29) are fixedly connected to collection boxes (30).
6. The BDO organic waste liquid treatment device according to claim 1, characterized in that: A control panel (32) is fixedly connected to the bottom left side of the tank (5).
7. The BDO organic waste liquid treatment device according to claim 2, characterized in that: A filter screen (24) is fixedly connected to the bottom inside the reaction box (23).
8. The BDO organic waste liquid treatment device according to claim 2, characterized in that: Small water pumps (25) are fixedly connected to the bottom left and right sides of the reaction box (23). The output ends of the two small water pumps (25) are fixedly connected to return pipes (26), and the other ends of the two return pipes (26) are fixedly connected to the left and right sides of the reaction box (23).