A sulphuric acid distributor

Abstract

The utility model relates to sulfuric acid distribution equipment technical field, concretely is a kind of sulfuric acid distributor, including distributor body, toothed strip groove subassembly and disc type sieve plate subassembly;Distributor body is hollow cylinder structure, its top is equipped with sulfuric acid inlet, bottom is equipped with the sulfuric acid outlet that with dry tower inside intercommunication;Toothed strip groove subassembly is horizontally arranged in the inside of distributor body and is close to sulfuric acid inlet side;Disc type sieve plate subassembly is horizontally arranged in the inside of distributor body and is located below toothed strip groove subassembly.Rely on the two-stage structure of "toothed strip groove subassembly preliminary shunt+disc type sieve plate subassembly secondary shunt", effectively solve the problem of traditional equipment liquid distribution uneven: toothed strip groove is decomposed into multiple uniform liquid stream by staggered distribution V-shaped tooth mouth, preliminary covers distributor full section;The honeycomb sieve hole of disc type sieve plate and the liquid flow secondary distribution guided by guide convex boss, eliminate local liquid flow accumulation or vacancy, completely eliminate acid distribution blind area.

Description

Technical Field

[0001] This utility model relates to the technical field of sulfuric acid distribution equipment, and more specifically, to a sulfuric acid distributor. Background Technology

[0002] In chlor-alkali industrial production, chlorine drying is a crucial step in ensuring the safe and stable operation of subsequent processes. Excessive moisture content in chlorine not only severely corrodes chlorine compressors and pipelines, shortening equipment lifespan, but can also affect the quality of downstream products and even pose production safety risks. Currently, concentrated sulfuric acid is commonly used as a desiccant in industry. It absorbs moisture through countercurrent contact with chlorine gas within a drying tower. This process offers advantages such as high drying efficiency and operational flexibility; however, the uniformity of sulfuric acid distribution within the drying tower directly determines the drying effect and the sulfuric acid consumption per unit volume.

[0003] The commonly used sulfuric acid distribution equipment in existing chlorine drying towers mainly includes tubular acid distributors and traditional tubular acid distributors. Tubular acid distributors rely on the flow of liquid surface in the tank to achieve flow distribution, but the liquid surface is prone to peak and valley differences, resulting in large differences in sulfuric acid flow distribution at different locations, making it difficult to achieve uniform liquid distribution. Traditional tubular acid distributors operate under positive pressure turbulent flow conditions, with a low density of acid distribution points (usually about 32 points / ㎡), resulting in many acid distribution blind zones. Moreover, the outlet is prone to forming a scattered spray flow, which not only has obvious gas entrapment and misting phenomena, but also leads to significant differences in sulfuric acid flow between the central area and the edge area, and local areas experience overflow concentration or weak flow phenomena.

[0004] The inherent defects of the aforementioned distribution equipment directly lead to two major problems: First, uneven sulfuric acid distribution results in insufficient sulfuric acid in some areas of the drying tower, preventing the full absorption of moisture from the chlorine gas, while excessive sulfuric acid in other areas leads to waste and persistently high sulfuric acid consumption per unit area. Industry data shows that without optimized distribution systems, sulfuric acid consumption per unit area often exceeds 15 kg / tCl2, with some companies even exceeding 20 kg / tCl2, significantly increasing production costs. Second, uneven liquid flow prevents the formation of a continuous and uniform liquid film on the surface of the packing material within the tower, resulting in a reduced contact area and shorter contact time between chlorine and sulfuric acid. Consequently, the moisture content of the dried chlorine gas is difficult to stably control below the optimal level of 25 ppm, and under some operating conditions, it even exceeds 200 ppm, failing to meet the demands of high-end production.

[0005] Furthermore, concentrated sulfuric acid is highly corrosive. Existing distributors often use ordinary coatings or metal linings for internal corrosion protection. Under prolonged high temperatures (40-60℃) and strong corrosive conditions, these coatings are prone to peeling or lining damage, affecting equipment lifespan and potentially contaminating the sulfuric acid with corrosion products, further reducing drying efficiency. Simultaneously, existing equipment lacks a precise flow regulation mechanism. When chlorine flow or humidity fluctuates within the drying tower, the sulfuric acid supply cannot be matched in a timely manner, further exacerbating uneven distribution and sulfuric acid waste. Utility Model Content

[0006] The purpose of this invention is to provide a sulfuric acid distributor to solve the problem mentioned in the background art, which is that uneven distribution of sulfuric acid leads to insufficient sulfuric acid in some areas of the drying tower, making it unable to fully absorb the moisture in the chlorine gas, while excessive sulfuric acid in some areas causes waste, resulting in high sulfuric acid consumption per unit area.

[0007] To achieve the above objectives, this utility model provides a sulfuric acid distributor, including a distributor body, a toothed groove assembly, and a disc sieve plate assembly; the distributor body is a hollow cylindrical structure with a sulfuric acid inlet at the top and a sulfuric acid outlet communicating with the interior of a drying tower at the bottom; the toothed groove assembly is horizontally arranged inside the distributor body and close to the sulfuric acid inlet; the disc sieve plate assembly is horizontally arranged inside the distributor body and located below the toothed groove assembly.

[0008] This setup uses a core framework of "distributor body + two-stage diversion assembly": the hollow cylindrical body provides a carrier for sulfuric acid flow and installation, the top inlet receives sulfuric acid and the bottom outlet connects to the drying tower to ensure directional delivery of sulfuric acid; the toothed trough assembly is located near the inlet to initially disperse the concentrated sulfuric acid, and the disc sieve plate assembly is located below to further refine the initially dispersed sulfuric acid. Through the hierarchical design of "coarse separation first, then fine separation", the problem of uneven liquid distribution in traditional single-stage distributors is solved.

[0009] Preferably, the toothed groove assembly includes several parallel and spaced toothed grooves, each toothed groove having several teeth along its length, and the teeth of adjacent toothed grooves being staggered.

[0010] This setup utilizes a "parallel spacing + staggered teeth" design: parallel grooves ensure even distribution of sulfuric acid radially along the distributor, preventing localized concentrations; the teeth along the length of the grooves break down the sulfuric acid into smaller streams, and the staggered distribution of teeth between adjacent grooves fills the "flow gaps" between individual groove teeth, eliminating acid separation blind spots and ensuring that the sulfuric acid after initial separation evenly covers the disc sieve plate below.

[0011] Preferably, the disc sieve plate assembly includes a sieve plate body and a plurality of sieve holes formed on the sieve plate body. The sieve holes are uniformly distributed in a honeycomb pattern, and the sieve plate body is also provided with a plurality of upwardly protruding guide protrusions, which are located between adjacent sieve holes. After sulfuric acid enters the distributor body through the sulfuric acid inlet, it first achieves preliminary diversion through the toothed groove assembly, and then is guided by the guide protrusions of the disc sieve plate assembly and achieves secondary uniform distribution through the sieve holes. Finally, it enters the drying tower through the sulfuric acid outlet to contact chlorine gas.

[0012] This setup constructs a secondary diversion mechanism of "honeycomb sieve holes + guide protrusions": the honeycomb sieve holes achieve fine distribution of sulfuric acid through dense and uniform openings; the guide protrusions between adjacent sieve holes can guide the liquid flow, avoid local accumulation caused by the liquid flowing randomly on the sieve plate surface, and at the same time extend the residence time of the liquid flow on the sieve plate, ensuring that each liquid flow can accurately enter the sieve hole, forming a complete process of "guidance-diversion-output".

[0013] Preferably, the toothed groove has a V-shaped toothed structure, the opening angle of the toothed groove is 30°-60°, and the spacing between adjacent toothed grooves is 5mm-10mm.

[0014] This design utilizes a V-shaped toothed structure and specific parameters: the V-shaped structure provides excellent flow conductivity, guiding the sulfuric acid to flow smoothly and preventing splashing; the 30°-60° opening angle balances flow efficiency and flow stability, as too small an angle can easily lead to flow blockage, while too large an angle can cause uneven flow; the 5mm-10mm tooth spacing ensures the density of acid distribution points, adapting to the sulfuric acid flow requirements and avoiding flow concentration caused by excessive spacing or blockage caused by insufficient spacing.

[0015] Preferably, the thickness of the sieve plate body is 8mm-12mm, the diameter of the sieve holes is 3mm-5mm, and the spacing between the sieve holes is 8mm-12mm; the guide boss is a hemispherical structure with a diameter of 6mm-8mm, and the spacing between adjacent guide bosses is the same as the spacing between the sieve holes.

[0016] This design utilizes parameter matching between the sieve plate and the guide protrusions: a sieve plate thickness of 8mm-12mm ensures structural strength, while a sieve hole diameter of 3mm-5mm and a hole spacing of 8mm-12mm ensure high-density acid separation while maintaining sulfuric acid flow efficiency; the hemispherical guide protrusions (diameter 6mm-8mm, spacing consistent with the sieve holes) precisely match the sieve holes, guiding the liquid flow to evenly cover each sieve hole, avoiding liquid flow guidance failure caused by parameter mismatch.

[0017] Preferably, the inner wall of the distributor body is also provided with an anti-corrosion coating, which is a polytetrafluoroethylene coating or a perfluoroether rubber coating, and the coating thickness is 0.5mm-1mm.

[0018] This design is designed to address the highly corrosive nature of concentrated sulfuric acid by selecting a PTFE or perfluoroether rubber coating with excellent corrosion resistance. Both coatings exhibit good chemical stability and can withstand long-term corrosion from 98% concentrated sulfuric acid and high-temperature conditions of 40-60℃. The coating thickness of 0.5mm-1mm ensures corrosion protection while avoiding a reduction in the body's internal diameter due to excessive coating thickness, thus not affecting the flow of sulfuric acid.

[0019] Preferably, the system also includes a flow regulating component, which includes a regulating valve disposed at the sulfuric acid inlet and a controller electrically connected to the regulating valve. The controller is used to adjust the opening of the regulating valve according to the flow rate and humidity data of chlorine in the drying tower to control the flow rate of sulfuric acid entering the distributor body.

[0020] This setting establishes a "controller-regulating valve" linkage mechanism: the controller receives chlorine flow and humidity data in the drying tower, calculates the required sulfuric acid flow through a preset algorithm, and then adjusts the opening of the inlet regulating valve; achieving precise matching of "chlorine operating conditions - sulfuric acid flow" and avoiding insufficient or excessive sulfuric acid supply due to changes in chlorine operating conditions.

[0021] Preferably, the flow regulating component further includes a flow sensor disposed inside the distributor body. The flow sensor is electrically connected to the controller and is used to detect the flow rate of sulfuric acid in the distributor body in real time and feed it back to the controller. The controller adjusts the opening of the regulating valve according to the feedback signal of the flow sensor.

[0022] This setting adds a flow sensor to form a closed-loop control: the sensor detects the actual flow rate of sulfuric acid in the distributor in real time and feeds the data back to the controller; the controller compares the "calculated required flow rate" with the "actual flow rate" and adjusts the opening of the regulating valve to ensure that the sulfuric acid flow rate accurately meets the working conditions and avoids flow deviation caused by regulating valve error or changes in pipeline resistance.

[0023] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0024] Relying on a two-stage structure of "initial diversion by toothed trough assembly + secondary diversion by disc sieve plate assembly," the uneven liquid distribution problem of traditional equipment is effectively solved: the toothed trough, through its staggered V-shaped teeth, breaks down sulfuric acid into multiple uniform liquid streams, initially covering the entire cross-section of the distributor; the honeycomb sieve holes and guide protrusions of the disc sieve plate guide the secondary distribution of the liquid stream, preventing local liquid accumulation or gaps and completely eliminating acid separation blind zones. The uniformly distributed sulfuric acid can form a complete liquid film on the surface of the packing material inside the tower, significantly increasing the contact efficiency with chlorine gas, and ultimately stabilizing the moisture content of the dried chlorine gas within a high-quality range, meeting the production requirements of high-end chlorine products.

[0025] Precise distribution ensures sulfuric acid fully absorbs moisture, avoiding both over-addition due to insufficient local sulfuric acid and waste caused by local over-addition. Combined with dynamic control of the flow regulation component, it significantly reduces sulfuric acid consumption per unit area, minimizing unnecessary costs. Furthermore, this design offers high operational flexibility, maintaining good distribution even when sulfuric acid flow fluctuates within a certain range. It adapts to dynamic changes in chlorine flow and humidity within the drying tower, further reducing the increase in sulfuric acid consumption caused by operational fluctuations.

[0026] The inner wall of the distributor body is coated with polytetrafluoroethylene or perfluoroether rubber, which can withstand the corrosion of concentrated sulfuric acid and high temperature conditions for a long time, solving the problems of coating peeling and lining damage in traditional equipment and extending the continuous service life of the equipment. In addition, the toothed groove and disc screen plate adopt a modular fixing design, which, together with the flow guide boss, buffers the liquid flow, reducing equipment vibration and liquid flow impact, and reducing the risk of component loosening and damage; and the V-shaped toothed mouth and honeycomb screen holes are not easy to clog, reducing the frequency of downtime for cleaning and improving the operational stability of the device.

[0027] The flow control component receives chlorine flow and humidity data from the drying tower via a controller, and adjusts the opening of the inlet regulating valve in real time. Combined with feedback from the flow sensor inside the distributor, it forms a closed-loop control, ensuring precise matching between sulfuric acid supply and chlorine drying demand, and rapid response to changes in operating conditions. Automated control not only reduces the workload of manual monitoring and operation, but also avoids uneven distribution and increased consumption caused by human error, improving the intelligence and stability of the production process. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0029] Figure 2 This is a schematic diagram of the toothed groove assembly in this utility model;

[0030] Figure 3 This is a schematic diagram of the structure of the disc-type sieve plate assembly of this utility model;

[0031] Figure 4 This is a schematic diagram of the flow regulation component in this utility model;

[0032] The meanings of the labels in the diagram are as follows:

[0033] 1. Distributor body; 11. Sulfuric acid inlet; 12. Sulfuric acid outlet; 13. Anti-corrosion coating; 2. Toothed groove assembly; 21. Toothed groove; 22. Toothed opening; 3. Disc sieve plate assembly; 31. Sieve plate body; 32. Sieve hole; 33. Flow guide boss; 4. Flow regulating assembly; 41. Regulating valve; 42. Controller; 43. Flow sensor. Detailed Implementation

[0034] 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.

[0035] This utility model provides a sulfuric acid distributor, such as... Figures 1-4 As shown, it includes a distributor body 1, a toothed trough assembly 2, and a disc sieve plate assembly 3; the distributor body 1 is a hollow cylindrical structure with a sulfuric acid inlet 11 at the top and a sulfuric acid outlet 12 at the bottom that communicates with the interior of the drying tower; the toothed trough assembly 2 is horizontally arranged inside the distributor body 1 and close to the sulfuric acid inlet 11; the disc sieve plate assembly 3 is horizontally arranged inside the distributor body 1 and located below the toothed trough assembly 2.

[0036] The core architecture is constructed using "distributor body 1 + toothed trough assembly 2 + disc sieve plate assembly 3": The hollow cylindrical distributor body 1 serves as the carrier for sulfuric acid flow and component installation. The top sulfuric acid inlet 11 receives external sulfuric acid, and the bottom sulfuric acid outlet 12 connects to the drying tower to ensure directional delivery of sulfuric acid. The toothed trough assembly 2 is horizontally positioned near the sulfuric acid inlet 11 to initially disperse the concentrated inflow of sulfuric acid. The disc sieve plate assembly 3 is horizontally arranged below it to further refine the initially dispersed sulfuric acid. Through the hierarchical design of "coarse separation first, then fine separation", the problem of uneven liquid distribution in traditional single-stage distributors is solved.

[0037] The core components and layout logic of the equipment were clearly defined, laying the foundation for subsequent functional optimization. This enabled the transformation of sulfuric acid from "centralized input" to "layered dispersion," initially eliminating local liquid accumulation within the distributor body 1 and ensuring that sulfuric acid covers the entire cross-section of the distributor, thus providing structural support for improving chlorine drying efficiency.

[0038] In this embodiment, the toothed groove assembly 2 includes a plurality of parallel and spaced toothed grooves 21. Each toothed groove 21 has a plurality of toothed openings 22 along its length, and the toothed openings 22 of adjacent toothed grooves 21 are staggered.

[0039] The toothed trough assembly 2 adopts a design of "parallel spaced toothed troughs 21 + staggered toothed openings 22": several toothed troughs 21 are radially parallel and spaced along the distributor body 1, so that sulfuric acid is evenly distributed along the cross section and avoids local concentration; the toothed openings 22 opened in the length direction of each toothed trough 21 break the sulfuric acid in the trough into small liquid streams, and the toothed openings 22 of adjacent toothed troughs 21 are staggered to fill the "liquid flow gap" between the toothed openings 22 of a single trough, eliminate the acid separation blind zone, and ensure that the sulfuric acid after the initial separation evenly covers the disc sieve plate assembly 3 below.

[0040] The concentrated sulfuric acid is broken down into multiple uniform liquid streams, which increases the density of acid distribution points and avoids the final liquid distribution deviation caused by uneven initial distribution. This provides a uniform liquid flow basis for the secondary distribution of the disc sieve plate assembly 3, and reduces sulfuric acid waste and fluctuations in drying effect caused by uneven distribution.

[0041] Specifically, the disc sieve plate assembly 3 includes a sieve plate body 31 and a number of sieve holes 32 opened on the sieve plate body. The sieve holes 32 are uniformly distributed in a honeycomb pattern, and the sieve plate body 31 is also provided with a number of upwardly protruding guide protrusions 33, which are located between adjacent sieve holes 32. After sulfuric acid enters the distributor body 1 through the sulfuric acid inlet 11, it first achieves preliminary diversion through the toothed groove assembly 22, and then is guided by the guide protrusions 33 of the disc sieve plate assembly 3 and achieves secondary uniform distribution through the sieve holes 32. Finally, it enters the drying tower through the sulfuric acid outlet 12 and comes into contact with chlorine gas.

[0042] The disc-type sieve plate assembly 3 constructs a secondary diversion mechanism consisting of a sieve plate body 31, honeycomb-shaped sieve holes 32, and guide protrusions 33. The honeycomb-shaped sieve holes 32 on the sieve plate body 31 achieve fine distribution of sulfuric acid through dense and uniform openings. The upward-protruding guide protrusions 33 between adjacent sieve holes 32 guide the liquid flow uniformly on the surface of the sieve plate body 31, avoiding localized accumulation and extending the liquid residence time to ensure that each liquid stream accurately enters the sieve hole 32. After entering the distributor body 1 through the sulfuric acid inlet 11, the sulfuric acid is initially diverted by the toothed inlets 22 of the toothed groove assembly 2, guided by the guide protrusions 33, and then diverted again by the sieve holes 32, finally entering the drying tower from the sulfuric acid outlet 12.

[0043] The secondary uniform distribution of sulfuric acid completely eliminates the acid separation blind zone, making the sulfuric acid more evenly distributed on the cross section of the drying tower. The uniformly output sulfuric acid can form a continuous and complete liquid film on the surface of the packing in the tower, which greatly increases the contact area with chlorine gas, providing a key guarantee for reducing the water content of chlorine gas, while avoiding the waste of sulfuric acid due to the failure of the diversion.

[0044] Furthermore, the toothed groove 21 has a V-shaped toothed structure, the opening angle of the toothed groove 21 is 30°-60°, and the spacing between adjacent toothed grooves is 5mm-10mm.

[0045] The flow distribution performance is optimized through the structure and parameters of the toothed groove 21: the V-shaped toothed groove 22 has good flow conductivity, guiding the sulfuric acid to flow smoothly and avoiding liquid splashing; the opening angle of 30°-60° balances the flow distribution efficiency and liquid flow stability, preventing liquid flow blockage caused by too small an angle and uneven flow distribution caused by too large an angle; the spacing between adjacent toothed grooves 22 of 5mm-10mm ensures that the density of acid distribution points matches the sulfuric acid flow requirements, avoiding liquid flow concentration or blockage caused by improper spacing.

[0046] The flow distribution stability of the toothed groove 21 is optimized to ensure uniform sulfuric acid distribution without splashing, adapting to fluctuating sulfuric acid flow conditions; the V-shaped tooth 22 reduces sulfuric acid residue, reduces acid waste and corrosion risk of the toothed groove 21, and reduces equipment maintenance caused by tooth 22 parameter issues.

[0047] Furthermore, the thickness of the sieve plate body 31 is 8mm-12mm, the diameter of the sieve holes 32 is 3mm-5mm, and the spacing between the sieve holes 32 is 8mm-12mm; the guide boss 33 is a hemispherical structure, the diameter of the guide boss 33 is 6mm-8mm, and the spacing between adjacent guide bosses 33 is consistent with the spacing between the sieve holes 32.

[0048] The accuracy of flow distribution is improved by matching the parameters of the sieve plate body 31, sieve holes 32 and flow guide protrusions 33: the thickness of the sieve plate body 31 of 8mm-12mm ensures structural strength and prevents deformation under long-term stress; the sieve hole diameter of 32 of 3mm-5mm and the hole spacing of 8mm-12mm ensure high-density acid distribution while ensuring the efficiency of sulfuric acid flow; the hemispherical flow guide protrusions 33 with a diameter of 6mm-8mm and a spacing consistent with the sieve holes 32 are precisely matched to guide the liquid flow to evenly cover each sieve hole 32, avoiding liquid flow guidance failure caused by parameter mismatch.

[0049] Improve the structural stability and flow distribution accuracy of the disc screen assembly 3, reduce the probability of clogging of the screen holes 32, and enhance the guiding effect of the guide boss 33; the parameter matching design enables the screen body 31 to adapt to different sulfuric acid flow conditions, and improves the overall operational flexibility of the equipment.

[0050] Furthermore, the inner wall of the distributor body 1 is also provided with an anti-corrosion coating 13, which is a polytetrafluoroethylene coating or a perfluoroether rubber coating, with a coating thickness of 0.5mm-1mm.

[0051] To address the highly corrosive nature of concentrated sulfuric acid, an anti-corrosion coating 13 is applied to the inner wall of the distributor body 1: the polytetrafluoroethylene or perfluoroether rubber coating has excellent chemical stability and can withstand long-term corrosion from concentrated sulfuric acid and the high-temperature conditions inside the drying tower; the coating thickness of 0.5mm-1mm ensures the anti-corrosion effect while avoiding the reduction of the inner diameter of the distributor body 1 due to excessive coating thickness, thus not affecting the sulfuric acid flow efficiency.

[0052] The corrosion resistance of the distributor body 1 is greatly improved, solving the problems of coating peeling and lining damage in traditional equipment, and extending the continuous operating life of the equipment; the anti-corrosion coating 13 has no corrosion products falling off, avoiding contamination of sulfuric acid, ensuring stable drying efficiency, and reducing the replacement and maintenance costs of the distributor body 1.

[0053] Furthermore, it also includes a flow regulating component 4, which includes a regulating valve 41 installed at the sulfuric acid inlet and a controller 42 electrically connected to the regulating valve. The controller 42 is used to adjust the opening of the regulating valve 41 according to the flow rate and humidity data of chlorine in the drying tower to control the flow rate of sulfuric acid entering the distributor body 1.

[0054] The newly added flow regulation component 4 establishes a linkage mechanism of "regulating valve 41 - controller 42": regulating valve 41 is located at sulfuric acid inlet 11, and controller 42 is electrically connected to regulating valve 41. It receives chlorine flow and humidity data in the drying tower, calculates the required sulfuric acid flow through a preset algorithm, and adjusts the opening of regulating valve 41 to achieve precise matching of "chlorine conditions - sulfuric acid flow", avoiding insufficient or excessive sulfuric acid supply due to changes in chlorine conditions.

[0055] Breaking away from the lag of traditional manual adjustment, it achieves automatic control of sulfuric acid flow, quickly responds to changes in chlorine conditions, avoids the decline in drying quality or waste of sulfuric acid due to improper sulfuric acid supply, and reduces the intensity of manual operation and the risk of error.

[0056] Furthermore, the flow regulating component 4 also includes a flow sensor 43 disposed inside the distributor body 1. The flow sensor 43 is electrically connected to the controller 42 and is used to detect the flow rate of sulfuric acid in the distributor body 1 in real time and feed it back to the controller 42. The controller 42 adjusts the opening degree of the regulating valve 41 according to the feedback signal of the flow sensor 43.

[0057] A flow sensor 43 is added to the flow regulation component 4 to form a closed-loop control: The flow sensor 43 is located inside the distributor body 1 and is electrically connected to the controller 42. It detects the actual flow of sulfuric acid in the distributor body 1 in real time and feeds it back to the controller 42. The controller 42 compares the "calculated required flow" with the "actual flow" and automatically adjusts the opening of the regulating valve 41 to ensure that the sulfuric acid flow accurately matches the working conditions and avoids flow deviation caused by the error of the regulating valve 41 or changes in pipeline resistance.

[0058] Improve the accuracy of flow regulation and reduce sulfuric acid flow control deviation; closed-loop control can automatically correct flow deviation without manual intervention, enhance equipment operation stability, adapt to dynamic changes in chlorine conditions, ensure efficient utilization of sulfuric acid, and reduce ineffective consumption.

[0059] The steps for using the sulfuric acid distributor of this utility model are as follows:

[0060] Sulfuric acid input and initial diversion stage: External concentrated sulfuric acid enters the equipment through the sulfuric acid inlet 11 at the top of the distributor body 1, first contacting the toothed trough assembly 2 near the inlet. Several parallel and spaced toothed troughs 21 receive the concentrated liquid flow, and the V-shaped serrations 22 (opening angle 30°-60°, adjacent spacing 5mm-10mm) opened along the length of the trough break the sulfuric acid into multiple small liquid streams. The serrations 22 of adjacent toothed troughs 21 are staggered to fill the gaps between the liquid streams, ensuring that the sulfuric acid after initial diversion evenly covers the disc sieve plate assembly 3 below, without local gaps or accumulation.

[0061] Secondary fine distribution stage of sulfuric acid: The sulfuric acid, after initial diversion, flows to the horizontally positioned disc sieve assembly 3 below, first contacting the hemispherical guide protrusions 33 (diameter 6mm-8mm, spacing consistent with sieve holes 32) on the sieve plate body 31. The guide protrusions 33 guide the liquid flow to flow evenly on the surface of the sieve plate body 31 (thickness 8mm-12mm), preventing the liquid from accumulating randomly. Subsequently, the liquid flow is further subdivided through the honeycomb-distributed sieve holes 32 (hole diameter 3mm-5mm, hole spacing 8mm-12mm), forming a high-density uniform liquid flow, completely eliminating acid separation blind zones, and ensuring that the sulfuric acid is evenly distributed at the bottom cross section of the distributor body 1.

[0062] Sulfuric acid output and chlorine contact stage: After secondary distribution, the sulfuric acid enters the chlorine drying tower through the sulfuric acid outlet 12 at the bottom of the distributor body 1, and is evenly sprayed onto the surface of the packing material inside the tower, forming a continuous and complete liquid film. At this time, the chlorine rising from the bottom of the drying tower comes into counter-current contact with the sulfuric acid liquid film on the surface of the packing material. The sulfuric acid fully absorbs the moisture in the chlorine, achieving chlorine drying and purification. After drying, the moisture content of the chlorine can be stably controlled within the excellent quality range.

[0063] Dynamic flow regulation stage: Throughout the entire operation, the flow regulation component 4 operates continuously: the flow sensor 43 detects the sulfuric acid flow rate in the distributor body 1 in real time and feeds the data back to the controller 42; the controller 42 calculates the current required sulfuric acid flow rate based on a preset algorithm and the chlorine flow rate and humidity detection data in the drying tower; if there is a deviation between the actual flow rate and the required flow rate, the controller 42 automatically adjusts the opening of the regulating valve 41 until the sulfuric acid flow rate accurately matches the operating conditions. For example, when the chlorine humidity increases, the controller 42 increases the opening of the regulating valve 41 to increase the sulfuric acid supply and ensure stable drying effect.

[0064] Long-term stable operation guarantee stage: The anti-corrosion coating 13 (thickness 0.5mm-1mm) on the inner wall of the distributor body 1 continues to play a role throughout the operation, avoiding the corrosion of the body by concentrated sulfuric acid. At the same time, the structural design of the toothed groove 21 and the sieve plate body 31 (such as V-shaped toothed mouth without residue and sieve holes that are not easy to clog) reduces the equipment maintenance requirements, ensuring that the sulfuric acid distributor participates in the chlorine drying process stably for a long time without frequent shutdown for maintenance.

[0065] Finally, it should be noted that the electronic components in the controller 42, flow sensor 43, etc. in this embodiment are all general standard parts or parts known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. In the idle part of this device, all the above-mentioned electrical components are connected by wires. The specific connection method should refer to the working order of each electrical component in the above working principle to complete the electrical connection. All of these are technologies known in the art.

[0066] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A sulfuric acid distributor for use in a chlorine drying tower to achieve uniform contact between sulfuric acid and chlorine gas to absorb moisture from the chlorine gas, characterized in that: It includes a distributor body (1), a toothed groove assembly (2), and a disc sieve plate assembly (3); the distributor body (1) is a hollow cylindrical structure with a sulfuric acid inlet (11) at the top and a sulfuric acid outlet (12) at the bottom that communicates with the inside of the drying tower; the toothed groove assembly (2) is horizontally arranged inside the distributor body (1) and close to the sulfuric acid inlet (11); the disc sieve plate assembly (3) is horizontally arranged inside the distributor body (1) and located below the toothed groove assembly (2).

2. The sulfuric acid distributor according to claim 1, characterized in that: The toothed groove assembly (2) includes several parallel toothed grooves (21), and each toothed groove (21) has several teeth (22) along its length. The teeth (22) of adjacent toothed grooves (21) are staggered.

3. The sulfuric acid distributor according to claim 1, characterized in that: The disc sieve assembly (3) includes a sieve plate body (31) and a number of sieve holes (32) opened on the sieve plate body. The sieve holes (32) are evenly distributed in a honeycomb pattern. The sieve plate body (31) is also provided with a number of upwardly protruding guide protrusions (33). The guide protrusions (33) are located between adjacent sieve holes (32). After sulfuric acid enters the distributor body (1) through the sulfuric acid inlet (11), it first achieves preliminary diversion through the toothed groove assembly (22), and then is guided by the guide protrusions (33) of the disc sieve assembly (3) and achieves secondary uniform distribution through the sieve holes (32). Finally, it enters the drying tower through the sulfuric acid outlet (12) and comes into contact with chlorine.

4. The sulfuric acid distributor according to claim 1, characterized in that: The toothed groove (21) has a V-shaped toothed opening (22), the opening angle of the toothed opening (22) is 30°-60°, and the distance between adjacent toothed openings (22) is 5mm-10mm.

5. The sulfuric acid distributor according to claim 3, characterized in that: The thickness of the sieve plate body (31) is 8mm-12mm, the diameter of the sieve hole (32) is 3mm-5mm, and the hole spacing of the sieve hole (32) is 8mm-12mm; the guide boss (33) is a hemispherical structure, the diameter of the guide boss (33) is 6mm-8mm, and the spacing between adjacent guide bosses (33) is consistent with the hole spacing of the sieve hole (32).

6. The sulfuric acid distributor according to claim 1, characterized in that: The inner wall of the distributor body (1) is also provided with an anti-corrosion coating (13), which is a polytetrafluoroethylene coating or a perfluoroether rubber coating with a thickness of 0.5mm-1mm.

7. The sulfuric acid distributor according to claim 1, characterized in that: It also includes a flow regulating component (4), which includes a regulating valve (41) installed at the sulfuric acid inlet and a controller (42) electrically connected to the regulating valve. The controller (42) is used to adjust the opening of the regulating valve (41) according to the flow rate and humidity data of chlorine in the drying tower to control the flow rate of sulfuric acid entering the distributor body (1).

8. The sulfuric acid distributor according to claim 7, characterized in that: The flow regulating component (4) also includes a flow sensor (43) disposed inside the distributor body (1). The flow sensor (43) is electrically connected to the controller (42) and is used to detect the flow rate of sulfuric acid in the distributor body (1) in real time and feed it back to the controller (42). The controller (42) adjusts the opening of the regulating valve (41) according to the feedback signal of the flow sensor (43).

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