Treatment device for acid oil system
The treatment device, which combines a water washing tower and spray pipes, solves the problems of acidic media in process gas affecting product quality and wasting alkali solution. It achieves efficient absorption of acidic gas and reuse of alkali solution, thereby improving the operational stability of the device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO ZHONGTIAN ENG CO LTD
- Filing Date
- 2025-05-16
- Publication Date
- 2026-04-17
AI Technical Summary
In existing technologies, the acidic media mixed in the process gas affects product quality and the excessive use of alkali solution leads to waste.
The treatment device, which uses a water washing tower, spray pipes and reflux components, absorbs acidic gases through the spraying action of the middle and top spray pipes, and uses the reflux components to reuse the spray liquid. Combined with a wire mesh demister and anti-corrosion packing layer, it reduces mist entrainment and corrosion.
It achieves efficient absorption of acidic gases in process gas, reduces the waste of alkali solution, ensures gas quality, and extends the service life of the equipment.
Smart Images
Figure CN224126932U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of process gas treatment equipment, and in particular to a treatment device for acid oil systems. Background Technology
[0002] Process gases are frequently used in industries such as chemical and petroleum. They play a crucial role in many aspects, acting as reactants, catalysts, or reaction media in chemical reactions, participating in various complex processes to achieve product synthesis or conversion. For example, in petroleum cracking, high-temperature steam, as a reaction medium, helps promote the cracking reaction of petroleum hydrocarbon molecules, generating important chemical raw materials such as ethylene and propylene.
[0003] However, the reaction process often results in the introduction of acidic media into the process gas. These acidic media may originate from the decomposition products of the catalyst under reaction conditions, or from impurities inherent in the reactants that are transformed during the reaction. The acidic media in the process gas can affect subsequent production processes and product quality, necessitating the removal of these acidic components.
[0004] For acidic waste gases in process gases, alkaline absorption is a common and effective method. Its principle is based on acid-base neutralization. When the process gas comes into contact with alkaline solution, the acidic substances in the process gas (such as sulfur dioxide and hydrogen sulfide) react chemically with the alkaline components in the solution, producing salts and water, which are then removed from the process gas. However, this method involves filling the process gas into a tank containing a large amount of alkaline solution, resulting in excessive alkaline consumption, and therefore requires improvement. Utility Model Content
[0005] In order to facilitate the removal of acidic gases from process gases and reduce the waste of alkali solution, this application provides a treatment device for acid oil systems.
[0006] The technical solution of the acid oil system processing device provided in this application is as follows:
[0007] A treatment device for an acid oil system includes a water washing tower, a middle spray pipe, a top spray pipe, and a reflux assembly. An air inlet is provided through the lower side wall of the water washing tower for supplying process gas into the tower. The middle spray pipe is located above the air inlet, and the top spray pipe is located above the middle spray pipe; both the middle and top spray pipes are used to spray and absorb the process gas. An air outlet is provided at the top of the water washing tower. A drain outlet is provided at the bottom of the water washing tower, located below the air inlet. The reflux assembly connects the drain outlet and the middle spray pipe.
[0008] By adopting the above technical solution, during processing, the process gas enters the interior of the water scrubbing tower through the inlet, and then passes through the middle spray pipe and the top spray pipe sequentially from bottom to top. Through the spraying action of the middle spray pipe and the top spray pipe, the gas can fully contact the process gas, thereby absorbing the acidic gases contained in the process gas.
[0009] The treated process gas is discharged from the outlet for subsequent use. The scrubbing liquid in the water washing tower is collected at the bottom and returned to the middle and top spray pipes through the drain and reflux components for reuse. This facilitates the removal of acidic gases from the process gas while reducing the waste of alkali solution.
[0010] Preferably, the spray nozzles of the middle spray pipe and the top spray pipe are arranged opposite each other.
[0011] By adopting the above technical solution and setting two opposing spray nozzles, the spray coverage can be made wider and more uniform. The liquids sprayed from the two nozzles can converge in the middle area, thereby filling the coverage blind spots that may exist when spraying from a single nozzle, ensuring that the areas requiring spraying are fully treated. The simultaneous spraying from the two opposing nozzles will produce a superimposed effect in the convergence area, increasing the spray intensity and impact force in that area, making the absorption of acidic gases more uniform and improving the absorption efficiency.
[0012] Preferably, it also includes a demister, which is disposed above the top spray pipe and includes a wire mesh for removing mist contained in the gas.
[0013] By employing the above technical solution, when gas carrying mist rises at a certain speed through the wire mesh demister, the mist collides with the fine wires due to the inertia of its ascent and adheres to the surface of the wires. The diffusion of the mist on the wire surface and the gravitational settling of the mist cause it to form larger droplets that flow along the wires to the junction of two wires. The wettability of the wires, the surface tension of the liquid, and the capillary action of the wires cause the droplets to grow larger and larger until the accumulated droplets become so large that their own weight exceeds the combined force of the gas's upward force and the liquid's surface tension, at which point the droplets separate from the wires and fall. After passing through the wire mesh demister, the gas is essentially free of mist, reducing the entrainment of mist in the gas.
[0014] Preferably, a flushing port is provided through the water washing tower, the flushing port is close to the demister and is located between the demister and the air outlet.
[0015] By adopting the above technical solution, the flushing port can serve as an opening for clean water to enter the water washing tower and flush the wire mesh on the demister, thereby achieving cleaning and ensuring the smooth flow of gas through the demister.
[0016] Preferably, the system further includes a drain pipe, a water pump, and a sewage tank. The two ends of the drain pipe are connected to the drain outlet and the sewage tank, and the water pump is mounted on the drain pipe and is used to transport sewage.
[0017] By adopting the above technical solution, the spray liquid at the bottom of the water washing tower will be pumped by the water pump and flow along the drain pipe into the sewage tank for treatment.
[0018] Preferably, the reflux assembly includes a reflux pipe and a reflux pump. The reflux pipe is used to connect the drain outlet and the middle spray pipe. The top spray pipe is also connected to the reflux pipe. The reflux pump is located on the reflux pipe and is used to transport the spray liquid.
[0019] By adopting the above technical solution, the spray liquid enters the return pipe from the drain outlet, and under the transportation of the return pump, it can be returned to the middle spray pipe and the top spray pipe, realizing the reuse of the spray liquid.
[0020] Preferably, the system also includes a filter, which is disposed on the return pipe and is used to filter the returned spray liquid.
[0021] By adopting the above technical solution, the filter can filter the returned spray liquid, so that impurities are trapped in the filter and the impact of solid impurities on the spray is reduced.
[0022] Preferably, it further includes a packing layer, which is disposed between the demister and the air outlet.
[0023] By adopting the above technical solution, the packing layer uses corrosion-resistant RPTFE Pall ring random packing. Due to the presence of acidic and other corrosive gases in the tower, the RPTFE Pall ring random packing can withstand the harsh corrosive environment, ensuring the long-term stable operation of the water washing tower, effectively absorbing residual acidic gases and other harmful components, and achieving the standard emission of process gas.
[0024] In summary, this application includes at least one of the following beneficial technical effects:
[0025] (1) By setting up a water washing tower, a middle spray pipe, a top spray pipe and a reflux assembly, the process gas enters the interior of the water washing tower from the air inlet, and then passes through the middle spray pipe and the top spray pipe from bottom to top. The acidic gas contained in the process gas can be absorbed by the spraying of the middle spray pipe and the top spray pipe, thereby achieving the treatment of the process gas.
[0026] (2) By setting up a demister, when the gas carrying mist rises through the wire mesh demister at a certain speed, the mist collides with the wire mesh filaments due to the inertia of the mist rising and is attached to the surface of the filaments; after the gas passes through the wire mesh demister, it is basically free of mist, thus reducing the mist entrainment phenomenon in the gas.
[0027] (3) By setting up a packing layer, the packing can withstand the harsh corrosive environment, ensuring the long-term stable operation of the water washing tower, while effectively absorbing residual acidic gases and other harmful components, so as to achieve the standard emission of process gas. Attached Figure Description
[0028] Figure 1 This is a schematic diagram of the processing device in the embodiments of this application;
[0029] Figure 2 This is a schematic diagram of the water washing tower in the embodiments of this application.
[0030] Reference numerals: 1. Water scrubbing tower; 2. Middle spray pipe; 3. Top spray pipe; 4. Return assembly; 41. Return pipe; 42. Return pump; 5. Air inlet; 6. Air outlet; 7. Drain outlet; 8. Filter; 9. Demister; 10. Drain pipe; 11. Water pump; 12. Wastewater tank; 13. Packing layer; 14. Flushing port. Detailed Implementation
[0031] The technical solutions of this application will now be described with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can be embodied in many different forms and is not limited to the embodiments described herein.
[0032] In the representation of this application, the reference to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., means that a specific feature, structure, material, or characteristic represented in connection with that embodiment or example is included in at least one embodiment or example of this application. Moreover, the specific features, structures, materials, or characteristics represented may be combined in any suitable manner in one or more embodiments or examples.
[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.
[0034] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection; a detachable connection; an integral part; or a mechanical connection. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.
[0035] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Without conflict, those skilled in the art can combine and integrate the different embodiments or examples shown in this application, as well as the features of those embodiments or examples.
[0036] This application discloses a processing apparatus for an acid oil system. (Refer to...) Figure 1 and Figure 2 The treatment device includes a water washing tower 1, a middle spray pipe 2, a top spray pipe 3, and a reflux assembly 4. An air inlet 5 is provided through the lower side wall of the water washing tower 1, allowing the process gas to be treated to enter the interior of the water washing tower 1. The middle spray pipe 2 and the top spray pipe 3 are arranged sequentially from bottom to top along the height direction of the water washing tower 1, with the middle spray pipe 2 located above the air inlet 5 and the top spray pipe 3 located above the middle spray pipe 2. Both the middle spray pipe 2 and the top spray pipe 3 are used to spray and absorb the process gas. In this embodiment, the spray nozzles of the middle spray pipe 2 and the top spray pipe 3 are arranged facing each other. An air outlet 6 is provided at the top of the water washing tower 1, allowing the treated process gas to be discharged.
[0037] The bottom of the water washing tower 1 has a drain outlet 7, located below the air inlet 5. A reflux assembly 4 connects the drain outlet 7 to the middle spray pipe 2, and also connects the drain outlet 7 to the top spray pipe 3. The reflux assembly 4 includes a reflux pipe 41 and a reflux pump 42. The reflux pipe 41 connects the drain outlet 7 to the middle spray pipe 2, and the drain outlet 7 and the top spray pipe 3 are also connected through the reflux pipe 41. The reflux pump 42 is installed on the reflux pipe 41 and is used to transport the spray liquid. In some embodiments, a filter 8 is also installed on the reflux pipe 41. The filter 8 filters the refluxed spray liquid, trapping impurities and reducing the impact of solid impurities on the spraying.
[0038] During processing, the process gas enters the interior of the water scrubbing tower 1 through the inlet 5, and then passes through the middle spray pipe 2 and the top spray pipe 3 from bottom to top. Through the spraying action of the middle spray pipe 2 and the top spray pipe 3, the gas can fully contact the process gas, thereby absorbing the acidic gases contained in the process gas.
[0039] The treated process gas is discharged from outlet 6 for subsequent use. The spray liquid in the water washing tower 1 is collected at the bottom and returned to the middle spray pipe 2 and the top spray pipe 3 through the drain outlet 7 and the return component 4 for reuse. This facilitates the removal of acidic gases from the process gas and reduces the waste of alkali.
[0040] Specifically, a demister 9 is installed inside the water washing tower 1. The demister 9 is a wire mesh demister 9, located above the top spray pipe 3. The wire mesh is used to remove mist contained in the gas. When the gas carrying mist passes upward through the wire mesh demister 9 at a specific flow rate, based on the inertial effect during the mist's ascent, the mist collides with the fine wires of the wire mesh and adheres to the surface of the wires. On the surface of the wires, the mist undergoes a diffusion process and gradually settles under the influence of gravity. This series of actions causes the mist to converge into larger droplets, which flow along the wires to the junction of two wires.
[0041] Due to the wettability of the filaments, the surface tension of the liquid, and the capillary action of the filaments, the droplets will continue to grow. Until the weight of the accumulated droplet exceeds the combined force of the gas's upward force and the liquid's surface tension, the droplet will detach from the filaments and fall. After being processed by the wire mesh demister 9, the gas essentially no longer contains mist, effectively reducing mist entrainment in the gas. A flushing port 14 is provided through the water washing tower 1, located near the demister 9 and between the demister 9 and the gas outlet 6. The flushing port 14 serves as an opening for clean water to enter the water washing tower 1 and flush the wire mesh on the demister 9, achieving cleaning and ensuring smooth gas flow through the demister 9.
[0042] The bottom of the water washing tower 1 is also equipped with a drain pipe 10. One end of the drain pipe 10 is connected to the drain outlet 7, and the other end is connected to the external sewage tank 12. A water pump 11 is also installed on the drain pipe 10. The water pump 11 is used to transport sewage to the sewage tank 12.
[0043] In addition, the interior of the water scrubbing tower 1 is equipped with a packing layer 13, which uses corrosion-resistant RPTFE Pall ring random packing. The packing layer 13 is located between the demister 9 and the gas outlet 6. Because acidic and other corrosive gases exist inside the water scrubbing tower 1, the RPTFE Pall ring random packing can withstand the harsh corrosive environment, ensuring the long-term stable operation of the water scrubbing tower 1, effectively absorbing residual acidic gases and other harmful components, and achieving compliant emissions of process gas.
[0044] The implementation principle of a treatment device for an acid oil system according to an embodiment of this application is as follows: the process gas enters the interior of the water washing tower 1 from the air inlet 5, and then passes through the middle spray pipe 2 and the top spray pipe 3 from bottom to top. The acidic gas contained in the process gas can be absorbed by the spray from the middle spray pipe 2 and the top spray pipe 3, thereby achieving the treatment of the process gas.
[0045] The treated process gas is discharged from outlet 6 for subsequent use. The spray liquid in the water washing tower 1 is collected at the bottom and returned to the middle spray pipe 2 and the top spray pipe 3 through the drain outlet 7 and the return component 4 for reuse, reducing the waste of alkali solution.
[0046] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A treatment device for an acid oil system, characterized in that The system includes a water scrubbing tower (1), a middle spray pipe (2), a top spray pipe (3), and a reflux assembly (4). The lower side wall of the water scrubbing tower (1) has an air inlet (5) for supplying process gas into the interior of the water scrubbing tower (1). The middle spray pipe (2) is located above the air inlet (5), and the top spray pipe (3) is located above the middle spray pipe (2). Both the middle spray pipe (2) and the top spray pipe (3) are used to spray and absorb the process gas. An air outlet (6) is provided at the top of the water scrubbing tower (1). The bottom of the water washing tower (1) is provided with a drain outlet (7), which is located below the air inlet (5). The reflux assembly (4) is used to connect the drain outlet (7) and the middle spray pipe (2).
2. A treatment device for sour oil systems according to claim 1, characterized in that, The spray nozzles of the middle spray pipe (2) and the top spray pipe (3) are arranged facing each other.
3. The processing apparatus for an acid oil system according to claim 1, characterized in that, It also includes a demister (9), which is located above the top spray pipe (3) and includes a wire mesh for removing mist contained in the gas.
4. A treatment device for sour oil systems according to claim 3, characterized in that A flushing port (14) is provided through the water washing tower (1). The flushing port (14) is close to the demister (9) and is located between the demister (9) and the air outlet (6).
5. A treatment device for sour oil systems according to claim 1, characterized in that, It also includes a drain pipe (10), a water pump (11) and a sewage tank (12). The two ends of the drain pipe (10) are connected to the drain outlet (7) and the sewage tank (12). The water pump (11) is installed on the drain pipe (10) and is used to transport sewage.
6. A treatment device for sour oil systems according to claim 1, characterized in that, The reflux assembly (4) includes a reflux pipe (41) and a reflux pump (42). The reflux pipe (41) is used to connect the drain outlet (7) and the middle spray pipe (2). The top spray pipe (3) is also connected to the reflux pipe (41). The reflux pump (42) is located on the reflux pipe (41) and is used to transport the spray liquid.
7. A treatment device for sour oil systems according to claim 6, characterized in that It also includes a filter (8), which is disposed on the return pipe (41) and is used to filter the return spray liquid.
8. A treatment device for sour oil systems according to claim 3, characterized in that, It also includes a packing layer (13), which is disposed between the demister (9) and the air outlet (6).