Venturi scrubber
By optimizing the structural design of the Venturi scrubber, including the overflow chamber and the guide channel, and combining the wear-resistant layer and the annular pad, the problem of easy clogging and wear in existing Venturi scrubbers has been solved, achieving efficient purification and low-cost maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGZHENG ENG
- Filing Date
- 2025-07-11
- Publication Date
- 2026-07-14
AI Technical Summary
Existing Venturi scrubbers are prone to clogging and wear during the purification of high-temperature dust-laden syngas, and their complex manufacturing process results in high maintenance and production costs.
A Venturi scrubber was designed, including a scrubber body, a Venturi scrubbing tube, and a guide tube. By setting an overflow chamber and a guide groove, the gas-liquid mixing is optimized. Wear-resistant layers and annular pads are used to facilitate the replacement of internal parts.
It improves gas-liquid mixing, reduces clogging and wear, extends equipment life, lowers maintenance and production costs, and enhances the equipment's high-temperature resistance and operational stability.
Smart Images
Figure CN224485400U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of syngas treatment equipment, and in particular to a Venturi scrubber. Background Technology
[0002] Venturi scrubbers are important dust removal devices widely used for purifying high-temperature, dust-laden synthesis gas to improve the quality of synthetic chemical products. Existing Venturi scrubbers often employ radial or axial inward spraying structures when using flushing water. However, the high solids content, alkalinity, and hardness of the flushing water easily clog and damage the equipment, affecting the washing effect. Furthermore, existing Venturi scrubbers have complex manufacturing processes and high production and maintenance costs. Utility Model Content
[0003] The purpose of this invention is to provide a Venturi scrubber that at least partially solves the aforementioned problems of the prior art.
[0004] To achieve the above objectives, this utility model provides a Venturi scrubber, characterized in that it includes a scrubber drum and a Venturi scrubbing tube inside the drum; wherein,
[0005] The washing machine drum has an air inlet at one end and an outlet at the other end.
[0006] The Venturi scrubbing tube is located inside the scrubber drum near the air inlet. Multiple support plates are connected to the outer wall of the Venturi scrubbing tube inlet. The other side of the multiple support plates is connected to the inner wall of the scrubber drum. The multiple support plates are spaced apart from each other. The outer wall of the Venturi scrubbing tube outlet is sealed to the inner wall of the scrubber drum. The space between the outer wall of the Venturi scrubbing tube and the inner wall of the scrubber drum is an overflow chamber. The Venturi scrubbing tube inlet forms an overflow weir.
[0007] An inlet is provided on the washing drum between the inlet and outlet of the Venturi washing pipe, and the inlet is connected to the overflow chamber.
[0008] Furthermore, it also includes a guide tube, which is constricted and located inside the scrubber cylinder near the air inlet. The outer wall of the guide tube inlet is connected to the inner wall of the scrubber cylinder, and the outlet of the guide tube extends into the Venturi scrubbing tube. Syngas enters the Venturi scrubbing tube through the guide tube, and a gap is left between the outer wall of the guide tube outlet and the inner wall of the Venturi scrubbing tube.
[0009] Furthermore, the support plate is also connected to the outer wall of the guide tube to position and support the guide tube.
[0010] Furthermore, the guide tube has a streamlined or conical conical opening structure.
[0011] Furthermore, the inlet of the Venturi scrubbing pipe is configured as a straight pipe section, which forms an overflow weir.
[0012] Furthermore, a flow guide groove is provided on the top surface of the venturi washing tube inlet.
[0013] Furthermore, at least a portion of the guide channel is a serrated guide channel.
[0014] Furthermore, the support plates are evenly distributed along the washing machine drum, in 4-6 pairs.
[0015] Furthermore, a wear-resistant layer is provided on the inner wall of the Venturi scrubbing tube and / or on the outer wall of the Venturi scrubbing tube opposite to the water inlet.
[0016] Furthermore, the outer wall of the Venturi scrubbing tube outlet is connected to the inner wall of the scrubber drum via an annular gasket.
[0017] Furthermore, a weld is provided on the washing drum body, and the weld is located after the outlet of the Venturi washing pipe.
[0018] Compared with the prior art, the present invention has at least the following advantages:
[0019] By setting an overflow chamber, an overflow weir is formed at the inlet of the Venturi scrubbing pipe, resulting in a uniform flushing water flow rate. This facilitates gas-liquid mixing, improves the purification effect, and easily forms a water film to protect the equipment. It also enhances gas-liquid mixing and improves the washing effect. Furthermore, it reduces equipment damage caused by blockage and wear, enhances the equipment's high-temperature resistance, extends its service life, and improves operational stability. The manufacturing process is simple, and internal parts are easy to replace, reducing production and maintenance costs. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of a Venturi scrubber structure provided in Embodiment 1 of this utility model.
[0021] Figure 2 This is an enlarged schematic diagram of the structure of one end of the air inlet of a Venturi scrubber provided in Embodiment 1 of this utility model.
[0022] Figure 3 This is an enlarged schematic diagram of the structure of one end of the Venturi scrubbing tube outlet of a Venturi scrubber provided in Embodiment 1 of this utility model.
[0023] Figure 4 This is a partial structural schematic diagram of the sawtooth-shaped guide channel of a Venturi scrubber provided in Embodiment 1 of this utility model.
[0024] Figure label:
[0025] 1. Scrubber body; 2. Venturi scrubbing pipe; 3. Air inlet; 4. Outlet; 5. Support plate; 6. Overflow chamber; 7. Water inlet; 8. Guide tube; 9. Contraction section; 10. Throat; 11. Diffusion section; 12. Straight pipe section; 13. Guide groove; 14. Wear-resistant layer; 15. Elbow structure; 16. Annular pad; 17. Weld; 18. Drain port; 19. Ear seat; 20. Pressure transmitter port. Detailed Implementation
[0026] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort should fall within the scope of protection of the present invention.
[0027] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate to understand the embodiments of the utility model described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a product or device comprising a series of units is not necessarily limited to those explicitly listed, but may include other units not explicitly listed or inherent to such product or device.
[0028] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.
[0029] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.
[0030] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.
[0031] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.
[0032] Example 1
[0033] Embodiment 1 of this utility model provides a Venturi scrubber, see reference. Figure 1 As shown, the device includes a washer drum 1 and a Venturi scrubbing tube 2 inside the drum. One end of the washer drum 1 is an air inlet 3, and the other end is an air outlet 4. (Reference) Figure 2 As shown, the Venturi scrubbing tube 2 is located inside the scrubber drum 1 near the air inlet 3. Multiple support plates 5 are connected to the outer wall of the Venturi scrubbing tube 2 inlet. The other side of each support plate 5 is connected to the inner wall of the scrubber drum 1, and the support plates 5 are spaced apart from each other. (Reference) Figure 3 As shown, the outer wall of the Venturi scrubbing tube 2 outlet is sealed to the inner wall of the scrubbing drum 1. (Reference) Figure 1 As shown, the space between the outer wall of the Venturi scrubbing tube 2 and the inner wall of the scrubber cylinder 1 is the overflow chamber 6, and an overflow weir is formed at the inlet of the Venturi scrubbing tube 2. An inlet 7 is provided on the scrubber cylinder 1 between the inlet and outlet of the Venturi scrubbing tube 2, and the inlet 7 is connected to the overflow chamber 6. Syngas enters the Venturi scrubbing tube 2 through the air inlet 3, and flushing water enters the overflow chamber 6 through the inlet 7, then overflows into the Venturi scrubbing tube 2. After the flushing water and syngas mix in the Venturi scrubbing tube 2, the mixture is discharged from the outlet 4.
[0034] The solution provided by this utility model has the following technical effects: the rinsing water flow rate is uniform, which is conducive to gas-liquid mixing, improves the purification effect, and makes it easy to form a water film to protect the equipment; it can also reduce equipment damage and poor washing effect caused by blockage and wear; the rinsing water also plays a cooling role, increasing the equipment's high temperature resistance, extending its service life and operational stability, and reducing maintenance costs; the equipment manufacturing process is simple, reducing production costs.
[0035] refer to Figure 1 , Figure 2As shown, in a preferred embodiment of the present invention, a guide tube 8 is further included. The guide tube 8 is constricted and disposed inside the scrubber body 1 near the air inlet 3. The inlet of the guide tube 8 is connected to the inner wall of the scrubber body 1, for example, by welding. The outlet of the guide tube 8 extends into the Venturi scrubbing tube 2. Synthetic gas enters the Venturi scrubbing tube 2 through the guide tube 8. A gap is left between the outer wall of the outlet of the guide tube 8 and the inner wall of the Venturi scrubbing tube 2.
[0036] By incorporating the guide tube 8, the airflow velocity distribution at the inlet of the Venturi scrubbing tube 2 is made more uniform, which helps to mix the syngas and flushing water and improves the syngas purification effect. The design principle of the guide tube 8 is to have a smaller angle and a longer length to better avoid excessive airflow accumulation. In other embodiments, the guide tube 8 may not be provided.
[0037] refer to Figure 2 As shown, preferably, multiple support plates 5 are also connected to the outer wall of the guide tube 8 to position and support the guide tube 8. By integrating the guide tube 8, support plates 5, and Venturi scrubbing tube 2 into a single design, the potential displacement of the guide tube 8 and Venturi scrubbing tube 2 during equipment operation is reduced, enhancing the overall stability of the equipment and lowering maintenance costs. In other embodiments, the outer wall of the guide tube 8 may not be connected to the support plates 5.
[0038] refer to Figure 2 As shown, the guide tube 8 has a streamlined or conical conical opening structure, which helps to optimize airflow distribution. The conical opening angle is preferably between 10 degrees and 40 degrees. The guide tube 8 is preferably made of wear-resistant duplex stainless steel.
[0039] The Venturi scrubbing tube 2 typically includes a constriction section 9, a throat section 10, and a diffuser section 11 connected in sequence, see reference. Figure 1 , Figure 2 As shown, in this embodiment, the inlet of the Venturi washing pipe 2 is also provided with a straight pipe section 12, which forms an overflow weir, further simplifying the production process and reducing production costs. Preferably, the height of the straight pipe section 12 is 20-40 mm. In other embodiments, the straight pipe section 12 may not be provided, and the inlet of the Venturi washing pipe 2 may be directly the contraction section 9, which forms an overflow weir.
[0040] refer to Figure 4 As shown, a guide groove 13 is provided on the top surface of the inlet of the Venturi scrubbing pipe 2, which is also the top surface of the overflow weir, to further guide the flushing water, allowing the flushing water to flow more evenly into the inner wall of the Venturi scrubbing pipe 2, enhancing gas-liquid mixing, and making it easier to form a water film to protect the equipment. In other embodiments, the guide groove 13 may not be provided on the top surface of the overflow weir.
[0041] refer to Figure 4As shown, the guide channel 13 can be entirely or partially configured as a serrated guide channel to break air bubbles and foam in the rinsing water and optimize the washing effect. Preferably, the serrated guide channel has a width of 5-10 mm, a depth of 3-5 mm, and a spacing of 10-15 mm between adjacent channels. In other embodiments, the guide channel 13 may not be configured as a serrated guide channel.
[0042] Preferably, multiple support plates 5 are evenly distributed along the washer drum 1, which can enhance the stability of the equipment, optimize the guidance of rinsing water, make the flow rate more uniform, strengthen gas-liquid mixing, and make it easier to form a water film to protect the equipment. The number of support plates is preferably 4-6 pairs, and the height is preferably 50-80 mm.
[0043] refer to Figure 1 As shown, preferably, the inlet 7 is located on the washer drum 1 near the outlet of the Venturi scrubbing pipe 2, opposite the diffuser section 11, to more efficiently utilize the flushing water to reduce the equipment temperature. In other embodiments, the inlet 7 may also be located at other positions on the washer drum 1, but should be located between the inlet and outlet of the Venturi scrubbing pipe 2 and communicate with the overflow chamber 6.
[0044] refer to Figure 3 As shown, the outer wall of the Venturi scrubbing pipe 2 opposite to the water inlet 7 is provided with a wear-resistant layer 14, which reduces the wear and erosion of the equipment by solid particles in the flushing water, extends the service life of the equipment, ensures stable operation of the equipment, and reduces maintenance costs. In other embodiments, the outer wall of the Venturi scrubbing pipe 2 opposite to the water inlet 7 may not be provided with a wear-resistant layer.
[0045] like Figure 1 , 2 As shown in Figures 1 and 3, the entire inner wall of the Venturi scrubbing pipe 2 is provided with a wear-resistant layer 14, which reduces the wear and erosion of the equipment caused by coal dust particles in the syngas and solid particles in the flushing water, extends the service life of the equipment, ensures stable operation of the equipment, and reduces maintenance costs. In other embodiments, the inner wall of the Venturi scrubbing pipe 2 may be partially provided with a wear-resistant layer, or it may not be provided with a wear-resistant layer.
[0046] like Figure 1 As shown, one end of the outlet 4 of the scrubber cylinder 1 is an elbow structure 15. The inner wall of the elbow structure 15 is provided with a wear-resistant layer 14, which reduces the wear and erosion of the equipment by coal dust particles in the syngas and solid particles in the flushing water, extends the service life of the equipment, ensures stable operation of the equipment, and reduces maintenance costs. In other embodiments, the elbow structure and wear-resistant layer may not be provided.
[0047] Preferably, the wear-resistant layer 14 has a thickness of 6-10 mm and is formed by welding or spraying.
[0048] like Figure 3As shown, the outer wall of the Venturi scrubbing tube 2 outlet is connected to the inner wall of the washer drum 1 via an annular gasket 16. This simplifies the manufacturing process and facilitates the replacement and maintenance of internal components such as the Venturi scrubbing tube 2 and multiple support plates 5 within the washer drum 1. The annular gasket 16 is welded to the inner wall of the washer drum 1 or formed by overlay welding. Preferably, the height of the annular gasket 16 is 20-30 mm, and its thickness is 6-10 mm. In other embodiments, the annular gasket 16 may be omitted, and the outer wall of the Venturi scrubbing tube 2 outlet may be directly and sealed to the inner wall of the washer drum 1.
[0049] like Figure 1 and Figure 3 As shown, a weld 17 is provided on the washer drum 1. The weld 17 is located after the outlet of the Venturi washer pipe 2, preferably 30-60 mm after the diffuser section 11, to facilitate the replacement and maintenance of the internal components in the washer drum 1. When it is necessary to replace or repair the internal components, the relevant operation can be performed by cutting at the weld 17. In other embodiments, the weld 17 may not be provided.
[0050] The Venturi scrubber internals provided in this embodiment include a guide tube 8, multiple support plates 5, a Venturi scrubbing tube 2, and an annular gasket 16. The installation sequence is as follows: First, the multiple support plates 5 are evenly positioned and welded to the inner wall of the scrubber drum 1. Then, the guide tube 8 is placed on the multiple support plates 5, and the outer wall of the inlet of the guide tube 8 is welded to the inner wall of the scrubber drum 1. Next, the straight pipe section 12 at one end of the inlet of the Venturi scrubbing tube 2 is inserted into the multiple support plates 5, and the outer wall of the diffuser section 11 at one end of the outlet of the Venturi scrubbing tube 2 is sealed and welded to the inner wall of the scrubber drum 1 through the annular gasket 16. The internal components are removed in the reverse order of installation.
[0051] refer to Figure 1 As shown, the washer drum 1 is also equipped with a drain port 18, a lug 19, and a pressure transmitter port 20. The drain port 18 is a spare and is normally closed. The lug 19 is used to fix the Venturi washer to the frame. The pressure transmitter port 20 is used to measure the pressure inside the drum.
[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Those skilled in the art should understand that modifications can be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A Venturi scrubber, characterized in that: Includes the washer drum and the Venturi scrubbing tube inside the drum; wherein, The washing machine drum has an air inlet at one end and an outlet at the other end. The Venturi scrubbing tube is located inside the scrubber drum near the air inlet. Multiple support plates are connected to the outer wall of the Venturi scrubbing tube inlet. The other side of the multiple support plates is connected to the inner wall of the scrubber drum. The multiple support plates are spaced apart from each other. The outer wall of the Venturi scrubbing tube outlet is sealed to the inner wall of the scrubber drum. The space between the outer wall of the Venturi scrubbing tube and the inner wall of the scrubber drum is an overflow chamber. The Venturi scrubbing tube inlet forms an overflow weir. An inlet is provided on the washing drum between the inlet and outlet of the Venturi washing pipe, and the inlet is connected to the overflow chamber.
2. A Venturi scrubber according to claim 1, characterized in that: It also includes a guide tube, which is constricted and located inside the scrubber cylinder near the air inlet. The outer wall of the guide tube inlet is connected to the inner wall of the scrubber cylinder, and the outlet of the guide tube extends into the Venturi scrubbing tube. Syngas enters the Venturi scrubbing tube through the guide tube, and a gap is left between the outer wall of the guide tube outlet and the inner wall of the Venturi scrubbing tube.
3. A Venturi scrubber according to claim 2, characterized in that: The support plate is also connected to the outer wall of the guide tube to position and support the guide tube.
4. A Venturi scrubber according to claim 2, characterized in that: The guide tube has a streamlined or conical conical opening structure.
5. A Venturi scrubber according to claim 1, characterized in that: The inlet of the Venturi scrubbing pipe is configured as a straight pipe section, which forms an overflow weir.
6. A Venturi scrubber according to claim 1, characterized in that: A flow guide groove is provided on the top surface of the inlet of the Venturi scrubbing pipe.
7. A Venturi scrubber according to claim 6, characterized in that: At least a portion of the guide channel is a sawtooth-shaped guide channel.
8. A Venturi scrubber according to claim 1, characterized in that: The support plates are evenly distributed along the washing machine drum, and there are 4-6 pairs of them.
9. A Venturi scrubber according to claim 1, characterized in that: A wear-resistant layer is provided on the inner wall of the Venturi scrubbing tube and / or on the outer wall of the Venturi scrubbing tube opposite to the water inlet.
10. A Venturi scrubber according to claim 1, characterized in that: The outer wall of the Venturi scrubbing tube outlet is connected to the inner wall of the scrubbing drum via an annular gasket.
11. A Venturi scrubber according to claim 1, characterized in that: A weld is provided on the washing drum, and the weld is located after the outlet of the Venturi washing pipe.