Gas efficient purification device in coal-to-methanol process

Abstract

The utility model discloses a coal -to -methanol process gas high -efficient purification device, including filter jar, install the baffle in filter jar, and be provided with uniform gas guide subassembly and stirring subassembly on the baffle, the filter jar outer wall fixed mounting has filter case, be provided with filter adsorption subassembly in the filter case, the filter case top is provided with the induced draft unit, this coal -to -methanol process gas high -efficient purification device makes gas even dispersion through uniform gas guide subassembly, and stirring subassembly strengthens gas -liquid mixing, and the removal rate of impurity is greatly promoted, first through the purification medium in filter jar and removes most dust and soluble impurity, reduces the pollutant of entering filter case, reduces the filter layer jam probability, and the gear drive of motor drive makes gas and stirs synchronous action, increases the uniformity of gas -liquid mixing, and the compact structure has low energy consumption.

Description

Technical Field

[0001] This utility model relates to the technical field of gas purification devices, specifically a high-efficiency gas purification device for the coal-to-methanol process. Background Technology

[0002] In the coal-to-methanol production process, the syngas produced by coal gasification contains a variety of impurities, such as hydrogen sulfide (H2S), carbonyl sulfide (COS), carbon dioxide (CO2), dust, and other trace impurities. If these impurities are not effectively removed, they will not only affect the activity and lifespan of the methanol synthesis catalyst, leading to a decline in the quality of methanol products, but also cause corrosion to downstream equipment, increasing production costs and safety risks.

[0003] Chinese patent CN207253973U discloses a purification device for methanol-to-formaldehyde production. The device includes a housing with an inlet and an outlet at each end. A purification chamber is located inside the housing, containing a purification layer. A flow divider is also included, positioned between the inlet and the purification layer, within the purification chamber. By using a flow divider within the purification chamber, the methanol gas entering from the inlet is effectively dispersed, allowing for more uniform flow through the purification layer. This increases the effective contact area between the methanol gas and the purification layer, thereby improving purification efficiency and the purity of the purified methanol, which is beneficial for subsequent production.

[0004] However, the aforementioned patent has the following shortcomings: While it disperses gas using a diversion plate and purifies it with activated carbon and rock wool filters, it suffers from the following defects:

[0005] 1. Dust in the syngas can easily clog the filter layer, leading to frequent replacement of filter components and increased maintenance costs;

[0006] 2. It lacks a forced mixing structure for the gas and the purification medium (such as liquid desulfurizer), making it difficult to efficiently remove soluble impurities such as hydrogen sulfide. Therefore, it needs to be improved. Utility Model Content

[0007] The purpose of this invention is to provide a high-efficiency gas purification device in the coal-to-methanol process to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency gas purification device in the coal-to-methanol process, comprising a filter tank, a baffle plate installed inside the filter tank, and a uniform gas guiding component and a stirring component provided on the baffle plate; a filter box fixedly installed on the outer wall of the filter tank; a filter adsorption component provided inside the filter box; and an exhaust component provided on the top of the filter box.

[0009] The uniform air guiding assembly includes a rotary joint, a metal pipe, an exhaust pipe, and air guiding nozzles. A metal pipe is vertically and rotatably installed through the partition, and a rotary joint is installed on the top of the metal pipe. An air inlet pipe is installed on the top of the rotary joint, and a valve is installed at the end of the air inlet pipe through the top of the filter tank. Multiple exhaust pipes are horizontally installed on the outside of the metal pipe, and multiple air guiding nozzles are installed on each exhaust pipe.

[0010] As a further embodiment of this utility model: the stirring assembly includes a stirring rod and stirring blades, the stirring rod is vertically and through the top of the partition, and multiple stirring blades are installed on the outside of the stirring rod.

[0011] As a further embodiment of this utility model: a motor is installed on the top of the partition, and a small gear is installed at the output end of the motor. A large gear meshes with the outside of the small gear, and the large gear is fixedly installed on the metal tube. Medium gears mesh with both sides of the large gear, and the medium gears are installed on the top of the stirring rod.

[0012] As a further embodiment of this invention, the exhaust pipe and the stirring blade are inserted into each other.

[0013] As a further embodiment of this utility model: the filter adsorption assembly includes a filter layer and an installation groove, and the filter box has symmetrical installation grooves on both sides, with a filter layer inserted between the installation grooves.

[0014] As a further embodiment of this utility model: the exhaust assembly includes an exhaust fan, the top of the filter box is connected to the exhaust fan, and the suction end of the exhaust fan is connected to the filter tank through a pipe.

[0015] As a further embodiment of this utility model: a cover plate is provided on the outside of the filter box, and the cover plate is connected to the filter box by bolts; a purified gas outlet is installed on the outer wall of the filter box.

[0016] Compared with the prior art, the beneficial effects of this utility model are: the gas high-efficiency purification device in the coal-to-methanol process makes the gas uniformly dispersed through the uniform gas guiding component, and the stirring component enhances the gas-liquid mixing, which greatly improves the removal rate of impurities. Most of the dust and soluble impurities are removed by the purification medium in the filter tank first, reducing the pollutants entering the filter box and reducing the probability of filter layer blockage. The gear transmission driven by the motor makes the gas guiding and stirring work synchronously, increasing the uniformity of gas-liquid mixing. The structure is compact and the energy consumption is low. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0019] Figure 3 This is a schematic diagram of the internal structure of the filter tank of this utility model;

[0020] Figure 4 This is a schematic diagram of the filter box and cover plate structure of this utility model.

[0021] In the diagram: 1. Filter tank; 2. Filter box; 3. Rotary joint; 4. Metal pipe; 5. Inlet pipe; 6. Exhaust pipe; 7. Air guide nozzle; 8. Stirring rod; 9. Stirring blade; 10. Motor; 11. Pinion gear; 12. Large gear; 13. Medium gear; 14. Exhaust fan; 15. Filter layer; 16. Mounting groove; 17. Cover plate; 18. Purified gas outlet; 19. Baffle plate. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1-4 This utility model provides a technical solution: a gas high-efficiency purification device in the process of coal-to-methanol, including a filter tank 1, a partition 19 installed inside the filter tank 1, and a uniform gas guiding component and a stirring component provided on the partition 19; a filter box 2 fixedly installed on the outer wall of the filter tank 1, a filter adsorption component provided inside the filter box 2, and an exhaust component provided on the top of the filter box 2.

[0024] The uniform air guiding assembly includes a rotary joint 3, a metal pipe 4, an exhaust pipe 6, and an air guiding nozzle 7. The metal pipe 4 is vertically rotatably installed on the partition plate 19, and the rotary joint 3 is installed on the top of the metal pipe 4. The air inlet pipe 5 is installed on the top of the rotary joint 3, and the end of the air inlet pipe 5 passes through the top of the filter tank 1 and is equipped with a valve. Multiple exhaust pipes 6 are horizontally installed on the outside of the metal pipe 4, and multiple air guiding nozzles 7 are installed on each exhaust pipe 6.

[0025] Specifically, the metal tube 4 vertically penetrates the partition 19 and can rotate, and the top is connected to the air intake pipe 5 through the rotary joint 3. The rotary joint prevents the air intake pipe from getting tangled when the metal tube rotates.

[0026] Multiple exhaust pipes 6 are horizontally installed on the outside of the metal pipe 4, and air guide nozzles 7 are evenly distributed on the exhaust pipes 6.

[0027] Synthetic gas enters from the inlet pipe 5, passes through the rotary joint 3 and the metal pipe 4 to the exhaust pipe 6, and is finally evenly sprayed into the purification medium, such as "amine desulfurizing agent", in the lower area of ​​the filter tank 1 through the gas guide nozzle 7 to avoid gas accumulation.

[0028] Furthermore, the stirring assembly includes a stirring rod 8 and stirring blades 9. The stirring rod 8 is vertically and through the top of the partition 19, and multiple stirring blades 9 are installed on the outside of the stirring rod 8.

[0029] Specifically, the stirring rod 8 vertically penetrates the partition 19, and multiple stirring blades 9 are installed on the outside. The exhaust pipe 6 and the stirring blades 9 are inserted into each other and cooperate with each other, with the space staggered to avoid collision.

[0030] When the stirring blade 9 rotates, it agitates the purification medium, breaks up the bubble accumulation, and allows the gas to fully contact the medium, thereby improving the efficiency of desulfurization and other reactions.

[0031] The filter tank 1 is equipped with a purification medium inlet and outlet, and valves are installed on both the inlet and outlet.

[0032] This rotating gas distribution design allows the gas to be evenly distributed to different areas of the purification liquid, avoiding the problem of local gas accumulation caused by traditional fixed gas distribution methods, and greatly increasing the contact area between the gas and the purification liquid.

[0033] Furthermore, a motor 10 is installed on the top of the partition 19, and a small gear 11 is installed at the output end of the motor 10. A large gear 12 meshes with the outside of the small gear 11, and the large gear 12 is fixedly installed on the metal tube 4. Medium gears 13 mesh with both sides of the large gear 12, and the medium gears 13 are installed on the top of the stirring rod 8; the exhaust pipe 6 and the stirring blade 9 are inserted into each other.

[0034] Specifically, after the motor 10 starts, its output end drives the small gear 11 to rotate. The small gear 11 meshes with the large gear 12, thereby driving the large gear 12 fixed on the metal pipe 4 to rotate, realizing the rotation of the metal pipe 4 and the exhaust pipe 6. At the same time, the large gear 12 meshes with the medium gear 13 on both sides, driving the medium gear 13 installed on the top of the stirring rod 8 to rotate, thereby making the stirring rod 8 and the stirring blade 9 rotate synchronously. Through the design of the gear transmission ratio, the small gear drives the large gear to decelerate, and the large gear drives the medium gear to increase speed, which can create a speed difference between the exhaust pipe 6 and the stirring blade 9, further enhancing the gas dispersion and liquid stirring effect. Moreover, only one motor is needed to drive the two sets of components, reducing the energy consumption of the equipment.

[0035] Furthermore, the filter adsorption assembly includes a filter layer 15 and a mounting groove 16. The two inner walls of the filter box 2 are symmetrically provided with mounting grooves 16, and the filter layer 15 is inserted between the mounting grooves 16.

[0036] Specifically, the filter layer 15 can adopt a multi-layer structure, such as: a primary filter to remove dust, an activated carbon layer to adsorb carbonyl sulfur, and a desulfurizing agent layer to deeply remove H2S, so as to deeply adsorb and filter the gas after the initial purification of the filter tank to remove residual impurities.

[0037] After initial purification in filter tank 1, most soluble impurities and some dust are removed. Under the negative pressure of exhaust fan 14, the gas enters filter box 2. The filter layer 15 in filter box 2 is fixed by mounting groove 16. Multiple layers of filter media of different materials can be set according to purification requirements. For example, the first layer is a metal mesh to intercept residual large dust particles, the second layer is activated carbon to adsorb organic impurities such as carbonyl sulfide, and the third layer is molecular sieve to deeply remove trace amounts of moisture and impurities. The gas passes through each filter layer 15 in sequence and achieves deep purification through physical interception and chemical adsorption. Finally, the qualified gas is discharged from the purified gas outlet 18.

[0038] Furthermore, the exhaust assembly includes an exhaust fan 14, the top of the filter box 2 is connected to and installed with the exhaust fan 14, and the air intake end of the exhaust fan 14 is connected to the filter tank 1 through a pipe.

[0039] Specifically, the exhaust fan 14 is installed on top of the filter box 2, and its suction end is connected to the inside of the filter tank 1 through a pipe. When working, it creates a negative pressure environment in the filter tank 1 and the filter box 2 to provide power for gas flow. By adjusting the power of the exhaust fan 14 and the valve on the air inlet pipe 5, the flow rate of the gas in the device can be controlled. If the flow rate is too slow, the processing efficiency will be reduced. If the flow rate is too fast, the contact time between the gas and the purification liquid and the filter layer will be reduced, affecting the purification effect. Reasonable flow rate control can ensure the purification quality while processing efficiently.

[0040] Furthermore, a cover plate 17 is provided on the outside of the filter box 2, and the cover plate 17 is connected to the filter box 2 by bolts. A purified gas outlet 18 is installed on the outer wall of the filter box 2.

[0041] Specifically, the purified gas is discharged from the purified gas outlet 18 and enters the subsequent methanol synthesis process. The cover plate 17 is opened periodically and the filter layer 15 is replaced through the installation slot 16 to ensure stable purification effect.

[0042] Working principle: When using this high-efficiency gas purification device in the coal-to-methanol process, inject purification medium, such as amine liquid, into the lower zone of filter tank 1, ensuring that the liquid surface covers the gas guide nozzle 7 and stirring blade 9; check that the filter layer 15 in the filter box 2 is installed in place, and close the cover plate 17; open the valve of the air inlet pipe 5, and the coal-to-methanol synthesis gas enters through the air inlet pipe 5, passing sequentially through the rotary joint 3, metal pipe 4, and exhaust pipe 6, and finally being sprayed into the purification medium from the gas guide nozzle 7; at the same time, start the motor 10, which drives the metal pipe 4 and stirring rod 8 to rotate through gear transmission, and the exhaust pipe 6 rotates with the metal pipe 4. The rotating pipe 4 expands the gas distribution range, and the stirring blade 9 agitates the medium, allowing the gas to react fully with the medium, such as H2S reacting with amine liquid and being absorbed. The gas after preliminary purification enters the filter box 2 under the negative pressure of the exhaust fan 14, and passes through the filter layer 15 in sequence. The purified gas is discharged from the purified gas outlet 18 and enters the subsequent methanol synthesis process. The cover plate 17 is opened periodically, and the filter layer 15 is replaced through the installation groove 16 to ensure stable purification effect. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0043] The terms “center,” “longitudinal,” “lateral,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing this utility model 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. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0044] Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. A high-efficiency gas purification device for coal-to-methanol process, comprising a filter tank (1), characterized in that: The filter tank (1) is equipped with a partition (19), and a uniform air guiding component and a stirring component are provided on the partition (19). A filter box (2) is fixedly installed on the outer wall of the filter tank (1). A filter adsorption component is provided inside the filter box (2). A ventilation component is provided on the top of the filter box (2). The uniform air guiding assembly includes a rotary joint (3), a metal pipe (4), an exhaust pipe (6), and an air guiding nozzle (7). The metal pipe (4) is vertically rotatably installed on the partition (19), and the rotary joint (3) is installed on the top of the metal pipe (4). The air inlet pipe (5) is installed on the top of the rotary joint (3), and the end of the air inlet pipe (5) is installed inside the filter tank (1) with a valve installed on the top. Multiple exhaust pipes (6) are horizontally installed on the outside of the metal pipe (4), and multiple air guiding nozzles (7) are installed on each exhaust pipe (6).

2. The high-efficiency gas purification device in the coal-to-methanol process according to claim 1, characterized in that: The stirring assembly includes a stirring rod (8) and stirring blades (9). The stirring rod (8) is vertically mounted through the top of the partition (19), and multiple stirring blades (9) are mounted on the outside of the stirring rod (8).

3. The high-efficiency gas purification device in the coal-to-methanol process according to claim 1, characterized in that: A motor (10) is installed on the top of the partition (19), and a small gear (11) is installed at the output end of the motor (10). A large gear (12) meshes with the outside of the small gear (11), and the large gear (12) is fixedly installed on the metal tube (4). A medium gear (13) meshes with both sides of the large gear (12), and the medium gear (13) is installed on the top of the stirring rod (8).

4. The high-efficiency gas purification device in the coal-to-methanol process according to claim 1, characterized in that: The exhaust pipe (6) and the stirring blade (9) are inserted into each other.

5. The high-efficiency gas purification device in the coal-to-methanol process according to claim 1, characterized in that: The filter adsorption assembly includes a filter layer (15) and a mounting groove (16). The filter box (2) has mounting grooves (16) symmetrically opened on both sides, and a filter layer (15) is inserted between the mounting grooves (16).

6. The high-efficiency gas purification device in the coal-to-methanol process according to claim 1, characterized in that: The exhaust assembly includes an exhaust fan (14), the top of the filter box (2) is connected to the exhaust fan (14), and the air intake end of the exhaust fan (14) is connected to the filter tank (1) through a pipe.

7. The high-efficiency gas purification device in the coal-to-methanol process according to claim 1, characterized in that: The filter box (2) is provided with a cover plate (17) on the outside, and the cover plate (17) is connected to the filter box (2) by bolts. The filter box (2) is provided with a purified gas outlet (18) on the outer wall.

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