A regulating valve and a desulfurization tower

Abstract

The application discloses a regulating valve, which comprises a regulating rod and a plurality of butterfly valves, the butterfly valve comprises a valve body, a valve plate and a connecting rod sleeve, the connecting rod sleeve is sleeved on the valve regulating rod and is fixedly connected with the valve regulating rod; the plurality of butterfly valves are connected in series through the valve regulating rod, and both ends of the valve regulating rod are arranged outside the connecting rod sleeve. The application discloses a desulfurization tower, which comprises the regulating valve, the regulating valve is installed at one end of a tube bundle demister away from a spraying layer, one end of the valve body is connected with a demisting pipe, and both ends of the valve regulating rod are connected with a main body. The valve body is installed in a plurality of parallel pipelines, so that the plurality of parallel pipelines can be simultaneously opened and closed, meanwhile, the regulating valve has the advantages of simple structure and low cost; when the working condition load fluctuates, the demisting pipe is closed through the regulating valve, so that the flue gas amount in the remaining demisting pipe reaches the design flow velocity range, thereby the flow velocity of the tube bundle demister is controlled, and the demisting and dust removing efficiency is improved.

Description

Technical Field

[0001] This invention relates to the fields of valves and desulfurization towers, and in particular to a regulating valve and a desulfurization tower. Background Technology

[0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, and regulate and control the parameters of the conveyed medium. Currently, each valve is installed on a separate pipeline. When there are many pipelines, each valve on each pipeline needs to be adjusted individually, which is cumbersome. Currently, the only way to achieve batch adjustment of valves is to use solenoid valves electrically connected to a controller, which is costly.

[0003] Tube bundle demisters are commonly used in desulfurization towers to treat flue gas. A necessary condition for achieving ultra-low emissions with tube bundle demisters is a sufficient volume of flue gas to ensure a high flow velocity as the gas passes through the demister (ideally 5-7 m / s). The airflow spirals upwards along the inner wall of the tube, generating strong centrifugal force, causing the mist droplets in the flue gas to couple and coalesce on the wall, forming larger droplets that are then removed. However, the flue gas desulfurization, demisting, and dust removal processes in the ceramics industry experience significant fluctuations in operating conditions. In the raw material workshop, the number of spray towers operating in the powder production process needs to be adjusted according to the kiln's brick-making output. When each spray tower is started, stopped, or switched to other processes, the total flue gas volume for desulfurization, demisting, and dust removal fluctuates considerably, with operating load fluctuations ranging from 50% to 110%. This situation causes the flue gas volume in the tube bundle demister to fall below the designed flow velocity range during certain periods, resulting in low demisting and dust removal efficiency and hindering its widespread application in the ceramics industry. Therefore, it is necessary to control the flow velocity of the tube bundle demister. Summary of the Invention

[0004] The technical problems to be solved by this invention are: the high cost of valves for batch adjustment, and the need for ceramic factories to control the flow rate of tube bundle demisters.

[0005] The solution to the technical problem of this invention is:

[0006] A regulating valve includes a regulating rod and a plurality of butterfly valves. Each butterfly valve includes a valve body, a valve plate, and a connecting rod sleeve. The valve body is cylindrical and has two connecting holes distributed radially thereon. The two ends of the connecting rod sleeve are rotatably connected to the connecting holes. The valve plate is a circular plate disposed within the valve body. The connecting rod sleeve is fixedly disposed on the valve plate and sleeved on the regulating rod and fixedly connected to it. The plurality of butterfly valves are connected in series via the regulating rod, and both ends of the regulating rod extend beyond the connecting rod sleeve.

[0007] A further improved technical solution also includes a fastener and a seamless tube. The seamless tube is sleeved on the connecting rod sleeve and abuts against the connecting rod sleeve. One end of the fastener passes through the wall of the seamless tube and the wall of the connecting rod sleeve in sequence and is connected to the valve adjusting rod. A nut is provided on the outer wall of the seamless tube, and the fastener is threadedly connected to the nut.

[0008] As an optional technical solution, a reinforcing rib is also included, with both ends of the reinforcing rib fixedly connected to the valve plate and the connecting rod sleeve fixedly connected to the middle of the reinforcing rib.

[0009] A desulfurization tower includes the regulating valve described in any one of the above descriptions, and also includes a vertically arranged cylindrical main body. The main body is provided with a tube bundle demister and a spray layer. The tube bundle demister includes a plurality of vertically arranged demister pipes. The tube bundle demister is installed on the upper or lower side of the spray layer. A gap is provided between the tube bundle demister and the spray layer. The regulating valve is installed at the end of the tube bundle demister away from the spray layer. One end of the valve body is connected to the demister pipe. Both ends of the valve regulating rod are connected to the main body.

[0010] As a further improved technical solution, the number of regulating valves is several, and the several regulating valves are arranged in parallel and spaced apart.

[0011] As an optional technical solution, the tube bundle demister is installed above the spray layer, which is located at the bottom of the main body.

[0012] As an optional technical solution, the valve body, valve plate, and connecting rod sleeve are all made of PP.

[0013] As an optional technical solution, a first welded pipe is fixed on the inner wall of the main body, a glass tube is provided inside the first welded pipe, a first reverse flange is provided at the inner end of the first welded pipe, a first positive flange is connected to the first reverse flange, a first connecting hole is provided on the first positive flange, and one end of the valve adjusting rod is rotatably connected to the first connecting hole.

[0014] The beneficial effects of this invention are: 1. By installing the valve body in multiple parallel pipelines, the simultaneous opening and closing of multiple parallel pipelines can be achieved. At the same time, the regulating valve of this application has the advantages of simple structure and low cost; 2. When the operating load fluctuates, the regulating valve closes part of the demister pipe, so that the amount of flue gas in the remaining tube demister pipe reaches the designed flow rate range, thereby achieving the purpose of controlling the flow rate of the tube bundle demister and improving the demisting and dust removal efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of the present invention, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0016] Figure 1 This is a top view of the regulating valve of the present invention;

[0017] Figure 2 This is a cross-sectional view of the regulating valve of the present invention;

[0018] Figure 3 yes Figure 2 A magnified view of a portion of the image;

[0019] Figure 4 This is a side view of some parts of the regulating valve of the present invention;

[0020] Figure 5 This is a top view of the desulfurization tower of the present invention;

[0021] Figure 6 This is a schematic diagram of the desulfurization tower installation regulating valve of the present invention;

[0022] Figure 7 This is a front view of the desulfurization tower of the present invention;

[0023] Figure 8 This is a schematic diagram showing the installation of one end of the adjusting rod of the present invention with the first positive flange and the first negative flange. Detailed Implementation

[0024] The following will clearly and completely describe the concept, specific structure, and technical effects of the present invention in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are all within the scope of protection of the present invention. Furthermore, all connections / linkages mentioned herein do not simply refer to direct connection of components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this invention can be combined interactively without contradicting each other.

[0025] Reference Figures 1-4 This is an embodiment of the regulating valve of this application, specifically:

[0026] A regulating valve includes a regulating rod 2 and a plurality of butterfly valves. Each butterfly valve includes a valve body 11, a valve plate 12, and a connecting rod sleeve 13. The valve body 11 is cylindrical and has two connecting holes 110 distributed radially thereon. The two ends of the connecting rod sleeve 13 are rotatably connected to the connecting holes 110. The valve plate 12 is a circular plate and is disposed in the valve body 11. The connecting rod sleeve 13 is fixed on the valve plate 12 and is sleeved on the regulating rod 2 and fixedly connected to the regulating rod 2. The plurality of butterfly valves are connected in series through the regulating rod 2, and both ends of the regulating rod 2 extend out of the connecting rod sleeve 13.

[0027] Rotating the valve regulating rod 2 causes the valve plate 12 to rotate via the connecting rod sleeve 13, allowing the valve body 11 to be installed in multiple parallel pipelines. This enables simultaneous opening and closing of multiple parallel pipelines. Furthermore, the regulating valve of this application has the advantages of simple structure and low cost. The valve body 11 is used to connect external pipelines. The cylindrical valve body 11 can be fitted with flanges, threads, tongue and groove joints at both ends to connect to the external pipelines. A sealing ring can be installed between the connecting rod sleeve 13 and the connecting hole 110; and between the valve plate 12 and the valve body 11 to improve the sealing performance of the butterfly valve. The valve regulating rod 2 can be configured as several detachably connectable regulating rod units. Each regulating rod unit has internal and external threads at both ends, with the internal and external threads being compatible. By rotating the regulating rod unit, adjacent butterfly valves can be connected to each other. Thus, during installation, each butterfly valve is installed in the external pipeline, and then the butterfly valves are connected in series. This reduces the installation difficulty of the regulating valve when the arrangement of the external pipelines is complex.

[0028] As a further improvement to the above embodiment, it also includes a fixing member 14 and a seamless tube 15. The seamless tube 15 is sleeved on the connecting rod sleeve 13 and abuts against the connecting rod sleeve 13. One end of the fixing member 14 passes through the tube wall of the seamless tube 15 and the tube wall of the connecting rod sleeve 13 in sequence and is connected to the valve adjusting rod 2. A nut is provided on the outer side wall of the seamless tube 15, and the fixing member 14 is threadedly connected to the nut. This technical solution is a structure for connecting the connecting rod sleeve 13 and the adjusting rod 2. The fixing member 14 can be a screw, and the outer side wall of the seamless tube 15 and the nut can be tightly welded together. A sealing washer can be provided between the fixing member 14 and the nut to achieve a sealing and tight connection. In this way, fluid in the external pipeline can be prevented from flowing out of the pipe between the connecting rod sleeve 13 and the valve adjusting rod 2.

[0029] As an optional embodiment, a reinforcing rib 16 is also included, with both ends of the reinforcing rib 16 fixedly connected to the valve plate 12, and the connecting rod sleeve 13 fixedly connected to the middle of the reinforcing rib 16. Since the valve plate 12 experiences significant impact pressure from the fluid, the reinforcing rib 16 helps to improve the strength of the valve plate 12.

[0030] Reference Figures 5-8 This is an embodiment of the desulfurization tower of this application, specifically:

[0031] A desulfurization tower includes the aforementioned regulating valve and a vertically arranged cylindrical body 31. The body 31 houses a tube bundle demister 32 and a spray layer 33. The tube bundle demister 32 includes several vertically arranged demister tubes and is installed above or below the spray layer 33. A gap exists between the tube bundle demister 32 and the spray layer 33. The regulating valve is installed at the end of the tube bundle demister 32 away from the spray layer 33. One end of the valve body 11 is connected to the demister tubes, and both ends of the valve regulating rod 2 are connected to the body 31. Since the tube bundle demister 32 discharges exhaust gas after treating flue gas, one end of the valve body 11 is connected to the demister tubes, placing the valve body 11 at the end of the demister tubes. Preferably, the other end of the valve regulating rod 2 extends out of the body 31 and is bent at an acute, right, or obtuse angle to serve as an adjusting handle. When the operating load fluctuates, the regulating valve closes part of the demister tube, so that the amount of flue gas in the remaining tube demister tube reaches the designed flow rate range, thereby controlling the flow rate of the tube bundle demister and improving the demisting and dust removal efficiency.

[0032] As a further improvement to the above embodiment, the number of regulating valves is several, arranged in parallel and spaced apart. The designed flue gas treatment capacity is 1.02 million m³ / h. 3 The tower has a diameter of 9.8m and a total of 301 sets of pipe bundles installed per hour. The design wind speed for the pipe bundles is 5.5m / s. The actual flue gas volume under operating conditions is 750,000 m³ / h. 3 The tube bundle operating velocity is 3.6 m / s. Six rows of butterfly valves, totaling 86 pieces, are evenly arranged. When the flue gas volume is only at 70% load, closing these 86 butterfly valves reduces the tube bundle operating velocity to 5.4 m / s, reaching the design velocity range. This stabilizes the flow velocity within the tube bundle demister 32, ensuring that the particulate matter concentration meets ultra-low emission standards in real time. This flow velocity regulation device solves the problem of low flow velocity and low demisting and dust removal efficiency in a single tube of the tube bundle demister 32 due to flue gas volume fluctuations caused by the operation and shutdown of the spray tower. It can be widely used in the ceramics industry to achieve ultra-low particulate matter emissions in ceramic plants, fully adapting to flue gas condition fluctuations and ensuring that the particulate matter at the demister outlet is always <10 mg / m³. 3 .

[0033] As an optional embodiment, the tube bundle demister 32 is installed above the spray layer 33, which is located at the lower part of the main body 31.

[0034] As an optional embodiment, the valve body 11, valve plate 12, and connecting rod sleeve 13 are all made of PP. PP can withstand the high temperatures inside the desulfurization tower and is wear-resistant, making it suitable as a material for butterfly valves.

[0035] As an optional embodiment, a first welded pipe is fixedly mounted on the inner wall of the main body 31. A glass tube is housed within the first welded pipe. A first reverse flange is located at the inner end of the first welded pipe. A first positive flange is connected to the first reverse flange. A first connecting hole is provided on the first positive flange. One end of the valve adjusting rod 2 is rotatably connected to the first connecting hole. Preferably, a second welded pipe is fixedly mounted on the outer wall of the main body 31. A second reverse flange is fixedly mounted at the outer end of the second welded pipe. A second positive flange is connected to the second reverse flange. A second connecting hole is provided on the second positive flange. The other end of the valve adjusting rod 2 is rotatably connected to the second connecting hole. This structure is a simple way to install the valve adjusting rod 2 onto the main body 31. The glass tube is used to resist corrosion, as the flue gas contains a large amount of sulfides and is highly corrosive.

[0036] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A desulfurization tower characterized by: The adjusting valve comprises a vertically arranged cylindrical main body (31), a tube bundle demister (32) and a spray layer (33) arranged in the main body (31), the tube bundle demister (32) comprises a plurality of vertically arranged demisting pipes, the tube bundle demister (32) is arranged on the upper side or the lower side of the spray layer (33), a gap is arranged between the tube bundle demister (32) and the spray layer (33), the adjusting valve is arranged at one end of the tube bundle demister (32) away from the spray layer (33), one end of a valve body (11) is connected with the demisting pipe, and both ends of a valve adjusting rod (2) are connected with the main body (31); the adjusting valve comprises the valve adjusting rod (2) and a plurality of butterfly valves, the butterfly valve comprises the valve body (11), a valve plate (12) and a connecting rod sleeve (13), the valve body (11) is cylindrical, two connecting holes (110) are arranged on the valve body (11) in the radial direction, both ends of the connecting rod sleeve (13) are rotatably connected with the connecting holes (110), the valve plate (12) is a circular sheet, the valve plate (12) is arranged in the valve body (11), the connecting rod sleeve (13) is fixedly arranged on the valve plate (12), the connecting rod sleeve (13) is sleeved on the valve adjusting rod (2) and is fixedly connected with the valve adjusting rod (2); the plurality of butterfly valves are connected with each other in series through the valve adjusting rod (2), both ends of the valve adjusting rod (2) extend out of the connecting rod sleeve (13); a sealing ring is arranged between the valve plate (12) and the valve body (11); the valve adjusting rod (2) is arranged as a plurality of detachably connected adjusting rod units, both ends of each adjusting rod unit are respectively provided with an internal thread and an external thread, the internal thread and the external thread are matched to connect adjacent butterfly valves with each other; the adjusting valve further comprises a fixing member (14) and a seamless pipe (15), the seamless pipe (15) is sleeved on the connecting rod sleeve (13) and abuts against the connecting rod sleeve (13), one end of the fixing member (14) passes through the pipe wall of the seamless pipe (15) and the pipe wall of the connecting rod sleeve (13) in sequence and is connected with the valve adjusting rod (2), a nut is arranged on the outer side wall of the seamless pipe (15), and the fixing member (14) is threadedly connected with the nut; the valve body (11), the valve plate (12) and the connecting rod sleeve (13) are all made of PP; a reinforcing rib (16) is further arranged, both ends of the reinforcing rib (16) are fixedly connected with the valve plate (12), and the connecting rod sleeve (13) is fixedly connected with the middle part of the reinforcing rib (16); the number of the adjusting valves is a plurality, the plurality of adjusting valves are arranged in parallel and at intervals; a first welded pipe is fixedly arranged on the inner side wall of the main body (31), a glass pipe is arranged in the first welded pipe, a first reverse flange is arranged at the inner end of the first welded pipe, a first positive flange is connected with the first reverse flange, a first connecting hole is arranged on the first positive flange, and one end of the valve adjusting rod (2) is rotatably connected with the first connecting hole.

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