Etherification kettle tail gas recycling and collecting device
By designing a reuse and collection device for the etherification kettle tail gas and using diversion and cooling technologies to collect dust and solvents in the etherification kettle tail gas, the problems of resource waste and environmental pollution are solved, and the efficient use of resources and environmental protection are achieved.
Patent Information
- Application Number
- CN202421172708.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-05-27
AI Technical Summary
The etherification kettle contains dust and solvents in the exhaust gas produced in the cellulose production process, and the prior art is difficult to effectively collect and reuse, resulting in waste of resources and environmental pollution.
A collection device for recycling the tail gas of the etherification kettle is designed, which includes a tank, an inner cylinder, a spiral blade and a diversion pipe. Through diversion and cooling, the dust and solvent in the tail gas are precipitated and effectively collected.
It improves the reuse rate of dust and solvents, reduces resource waste, avoids tail gas pollution of the environment, and achieves the goal of green environmental protection.
Smart Images
Figure CN222368591U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of etherification kettle tail gas recovery, in particular to an etherification kettle tail gas recycling collection device. Background Art
[0002] Cellulose is a natural polymer chemical substance with abundant reserves in the world. Its raw materials come from wood, cotton wool, cotton linter, hay, wheat straw, cattail, hemp, mulberry bark, paper mulberry bark and bagasse. The etherification kettle is the reaction equipment used in the cellulose production process. By adding etherification agent to carry out temperature reaction, a large amount of dust and solvent gas and other tail gas will be generated in the etherification kettle along with the temperature reaction, and it will be directly discharged into the atmosphere from the venting outlet of the etherification kettle, which causes the dust and solvent in the tail gas to be wasted, which not only causes waste but also pollutes the environment. Utility Model Content
[0003] The utility model provides a recycling collection device for tail gas from an etherification kettle in order to make up for the deficiencies of the prior art. The utility model has a reasonable structural design and is easy to operate. The tail gas discharged from the venting outlet of the etherification kettle can be diverted, and dust and solvent in the tail gas can be precipitated by cooling, and the dust and solvent can be effectively collected, thereby improving the recycling rate of dust and solvent and reducing the waste of dust and solvent. At the same time, the utility model can also effectively avoid environmental pollution caused by tail gas, is green and environmentally friendly, and solves the problems existing in the prior art.
[0004] The technical solution adopted by the utility model to solve the above technical problems is:
[0005] The invention discloses a collection device for recycling tail gas from an etherification kettle, comprising a tank body and a plurality of supporting legs arranged at the bottom of the tank body, wherein the lower part of the tank body is funnel-shaped, an inner cylinder is arranged inside the tank body along its axial centerline direction, the upper end of the inner cylinder is connected to the top plate of the tank body, and the lower end is connected to the outlet at the bottom of the tank body, and the side wall of the inner cylinder is arranged in parallel with the side wall of the tank body, a spiral blade is arranged between the side wall of the tank body and the side wall of the inner cylinder along their height direction, the spiral blade separates the side wall of the tank body and the side wall of the inner cylinder into a spiral channel, a water inlet pipeline is connected to the side wall of the tank body at the bottom of the spiral channel, a water outlet pipeline is connected to the side wall of the tank body at the top of the spiral channel, a tail gas inlet pipe is connected to the side wall of the inner cylinder at the top of the spiral channel, the outer end of the tail gas inlet pipe passes outwards through the side wall of the tank body, a diversion pipe is arranged inside the tank body, and the upper end of the diversion pipe passes vertically through the center of the top plate of the tank body.
[0006] Optionally, the length direction of the exhaust gas intake pipe is arranged tangent to the circumferential direction of the inner wall of the inner cylinder.
[0007] Optionally, the vertical distance between the lower end of the diversion pipe and the lower funnel-shaped tank body is 20 cm.
[0008] Optionally, a dust-proof mechanism is provided at the outlet position of the lower part of the tank body, and the dust-proof mechanism includes an inner tube connected to the outlet position of the tank body, an outer tube is sleeved on the outside of the inner tube, the upper end of the outer tube is connected to the bottom of the tank body, and the lower end is provided with a baffle connected to the outer wall of the inner tube, a plurality of inner exhaust holes are provided on the inner tube side wall at the bottom of the outer tube along its circumferential direction, and a plurality of outer exhaust holes are provided on the outer tube side wall at the top along its circumferential direction.
[0009] The utility model adopts the above technical scheme, and has the advantages of reasonable structural design, convenient operation, and can guide the tail gas discharged from the etherification kettle vent outlet, and precipitate the dust and solvent in the tail gas by cooling, and effectively collect them, thereby improving the reuse rate of dust and solvent, reducing the waste of dust and solvent, and at the same time, effectively avoiding the tail gas from polluting the environment, which is green and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;
[0011] Figure 2 for Figure 1 A schematic diagram of a top view structure;
[0012] Figure 3 for Figure 2 AA-direction cross-sectional structural diagram;
[0013] In the figure, 1. tank body; 2. supporting legs; 3. inner tube; 4. top plate; 5. outlet; 6. spiral blades; 7. spiral channel; 8. water inlet pipe; 9. water outlet pipe; 10. exhaust gas inlet pipe; 11. guide pipe; 12. inner tube; 13. outer tube; 14. baffle; 15. inner exhaust hole; 16. outer exhaust hole. DETAILED DESCRIPTION
[0014] In order to clearly illustrate the technical features of the present solution, the present invention is described in detail below through specific implementation methods and in conjunction with the accompanying drawings. In the following description, many specific details are described to facilitate a full understanding of the present application. However, the present application can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below.
[0015] In addition, in the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.
[0016] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, they can be fixedly connected, detachably connected, or integrated. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" and the like mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.
[0017] like Figure 1-3As shown, in this embodiment, an etherification kettle tail gas recycling and collection device includes a tank body 1 and a plurality of supporting legs 2 arranged at the bottom of the tank body 1. The lower part of the tank body 1 is funnel-shaped, and an inner cylinder 3 is arranged inside the tank body 1 along its axial direction. The upper end of the inner cylinder 3 is connected to the top plate 4 of the tank body 1, and the lower end is connected to the outlet 5 at the bottom of the tank body 1. The side wall of the inner cylinder 3 is arranged parallel to the side wall of the tank body 1, and a spiral blade 6 is arranged between the side wall of the tank body 1 and the side wall of the inner cylinder 3 along their height direction. The spiral blades 6 separate the side wall of the tank body 1 and the side wall of the inner tube 3 into a spiral channel 7. A water inlet pipe 8 is connected to the side wall of the tank body 1 at the bottom of the spiral channel 7, and a water outlet pipe 9 is connected to the side wall of the tank body 1 at the top of the spiral channel 7. An exhaust gas intake pipe 10 is connected to the side wall of the inner tube 3 at the top of the spiral channel 7. The outer end of the exhaust gas intake pipe 10 passes through the side wall of the tank body 1 outwardly. A guide pipe 11 is provided in the tank body 1, and the upper end of the guide pipe 11 vertically passes through the center of the top plate 4 of the tank body 1.
[0018] Optionally, the length direction of the exhaust gas inlet pipe 10 is tangent to the circumferential direction of the inner wall of the inner tube 3. When the exhaust gas enters the inner tube 3 through the exhaust gas inlet pipe 10, the exhaust gas can be spirally rotated downward along the inner wall of the inner tube 3 at high speed, thereby increasing the entry speed of the exhaust gas and allowing the exhaust gas to fully contact the inner wall of the inner tube 3, thereby improving the heat exchange efficiency and the separation yield of the exhaust gas, and rapidly cooling the exhaust gas.
[0019] Optionally, the vertical distance between the lower end of the guide pipe 11 and the lower funnel-shaped tank body 1 is 20 cm. On the one hand, the heat exchange distance of the upper part of the tank body is fully utilized, so that the tail gas has sufficient reaction time for cooling, and at the same time, the separated tail gas, its dust and solvent can be gathered at the outlet 5 along the lower funnel-shaped tank body 1; on the other hand, the tail gas with precipitated dust and solvent can smoothly enter the lower end of the guide pipe 11.
[0020] Optionally, a dust prevention mechanism is provided at the outlet 5 at the lower part of the tank body 1, and the dust prevention mechanism includes an inner tube 12 connected to the outlet of the tank body 1, an outer tube 13 is sleeved on the outer side of the inner tube 12, the upper end of the outer tube 13 is connected to the bottom of the tank body 1, and the lower end is provided with a baffle 14 connected to the outer wall of the inner tube 12, a plurality of inner exhaust holes 15 are provided on the side wall of the inner tube 12 at the bottom of the outer tube 13 along its circumferential direction, and a plurality of outer exhaust holes 16 are provided on the side wall of the outer tube at the top along its circumferential direction. When the dust and solvent are discharged from the outlet 5, they usually need to be sealed and connected to the storage box to prevent dust from occurring, and the excess air hinders the collection of the storage box. The excess gas enters the outer tube 13 through the inner exhaust hole 15 and is discharged from the outer exhaust hole 16, which can prevent dust and does not affect the collection of the storage box.
[0021] Before using the device, the circulating water inlet pipe needs to be connected to the water inlet pipeline 8, the circulating water outlet pipe needs to be connected to the water outlet pipeline 9, and at the same time, the etherification kettle vent outlet pipe needs to be connected to the tail gas inlet pipe 10. When in use, the circulating water enters between the side wall of the tank body 1 and the side wall of the inner cylinder through the water inlet pipeline 8, and moves upward rapidly along the spiral channel 7 separated by the spiral blades 6, so that the temperature in the tank body 1 is rapidly reduced, and the high-temperature tail gas enters the inner cylinder 3 through the tail gas inlet pipe 10, and moves downward, and heat exchange occurs in the tank body 1, so that the tail gas is rapidly cooled, and the precipitated dust and solvent slide into the outlet 5 of the tank body 1 through the side wall of the inner cylinder 3, and then are uniformly collected by the collection and storage box. The utility model has reasonable structural design and convenient operation. The exhaust gas discharged from the venting outlet of the etherification kettle can be diverted, and the dust and solvent in the exhaust gas can be precipitated by cooling, and the dust and solvent can be effectively collected, thereby improving the reuse rate of the dust and solvent and reducing the waste of the dust and solvent. At the same time, the exhaust gas can be effectively avoided from polluting the environment, which is green and environmentally friendly and solves the problems existing in the prior art.
[0022] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some or all of the technical features can be replaced by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention. For those skilled in the art, any replacement improvements or changes made to the implementation methods of the present invention are within the protection scope of the present invention.
[0023] The matters not described in detail in the present invention are all known technologies to those skilled in the art.
Claims
1. An etherification kettle tail gas recycling collection device, characterized in that: The utility model comprises a tank body and a plurality of supporting legs arranged at the bottom of the tank body, wherein the lower part of the tank body is funnel-shaped, and an inner cylinder is arranged inside the tank body along its axial centerline direction, the upper end of the inner cylinder is connected to the top plate of the tank body, and the lower end thereof is connected to the outlet at the bottom of the tank body, and the side wall of the inner cylinder is arranged parallel to the side wall of the tank body, and a spiral blade is arranged between the side wall of the tank body and the side wall of the inner cylinder along their height direction, and the spiral blade separates the side wall of the tank body and the side wall of the inner cylinder into a spiral channel, a water inlet pipe is connected on the side wall of the tank body at the bottom of the spiral channel, a water outlet pipe is connected on the side wall of the tank body at the top of the spiral channel, an exhaust gas inlet pipe is connected on the side wall of the inner cylinder at the top of the spiral channel, and the outer end of the exhaust gas inlet pipe passes outwardly through the side wall of the tank body, a diversion pipe is arranged inside the tank body, and the upper end of the diversion pipe passes vertically through the center of the top plate of the tank body.
2. The etherification kettle tail gas recycling and collection device according to claim 1, characterized in that: The length direction of the exhaust gas intake pipe is tangent to the circumferential direction of the inner wall of the inner cylinder.
3. The etherification kettle tail gas recycling and collection device according to claim 1, characterized in that: The vertical distance between the lower end of the diversion pipe and the lower funnel-shaped tank body is 20 cm.
4. The etherification kettle tail gas recycling and collection device according to claim 1, characterized in that: A dustproof mechanism is provided at the outlet position of the lower part of the tank body, and the dustproof mechanism includes an inner tube connected to the outlet position of the tank body, an outer tube is sleeved on the outer side of the inner tube, the upper end of the outer tube is connected to the bottom of the tank body, and the lower end is provided with a baffle connected to the outer wall of the inner tube, a plurality of inner exhaust holes are provided on the inner tube side wall at the bottom of the outer tube along its circumferential direction, and a plurality of outer exhaust holes are provided on the outer tube side wall at the top along its circumferential direction.