Anti-blocking device for strengthening oxidation performance of desulfurization slurry

Abstract

The utility model discloses an anti-blocking device for strengthening the oxidation performance of desulfurization slurry, and relates to the technical field of desulfurization process flows. The device comprises multiple oxidation air branch pipes which are arranged at intervals, the head ends of the oxidation air branch pipes are located outside an absorption tower and connected with elbows, and the tail ends of the oxidation air branch pipes are located in the absorption tower; the head end of the oxidation air branch pipe is higher than the tail end of the oxidation air branch pipe. The device can effectively reduce the pipe blocking risk of the oxidation air branch pipe, ensure that the slurry has enough oxygen, improve the sulfite conversion rate, improve the desulfurization efficiency and the limestone utilization rate, prevent the problems of equipment damage and the like caused by pipe blocking of the oxidation air branch pipe, ensure safe and stable operation of a desulfurization system, improve the gypsum dehydration performance and reduce the production cost. The density of the absorption tower is well controlled, the overall performance and stability of a desulfurization system are improved, and reliable technical support is provided for waste gas treatment in industrial production.

Description

TECHNICAL FIELD

[0001] The utility model relates to desulfurization process technical field more specifically, it is a kind of device of preventing plugging enhanced desulfurization slurry oxidation performance. BACKGROUND

[0002] With the continuous improvement of environmental protection standard and the increasingly stringent requirement of people to air quality, the performance and stability of desulfurization system are put forward to higher requirement;However, in the actual desulfurization process, it faces a series of complex and severe challenges.

[0003] In the whole desulfurization process, it is of vital importance to maintain sufficient oxygen in slurry;From one aspect, sufficient oxygen can effectively promote the conversion of sulfite, which is the core of improving desulfurization efficiency, and the improvement of desulfurization efficiency not only helps to reduce the sulfur content in waste gas and reduce the pollution to the atmospheric environment, but also meets the inevitable requirement of national environmental protection policy and sustainable development strategy;From another aspect, sufficient oxygen is also the key guarantee to prevent the formation of scale in absorption tower and gypsum slurry pipeline, and the formation of scale not only affects the normal operation of equipment, increases maintenance cost, but also reduces the overall performance and service life of the system.

[0004] But the reality is not optimistic, because the oxidation air jet aperture is small, and the arrangement in the tower is extremely complex, which makes the possibility of oxidation air pipe blockage greatly increased;Once the oxidation air pipe is blocked, a series of chain reactions will be triggered;Firstly, the oxidation rate in the slurry will decrease sharply, which will lead to the increase of soluble sulfite concentration in the slurry, which not only reduces the desulfurization efficiency, but also makes the sulfur in waste gas unable to be removed sufficiently, and also reduces the utilization rate of limestone, increases the production cost, and in serious cases, it will also make the gypsum dewatering difficult, so that the density of absorption tower cannot be well controlled;More seriously, the blockage may cause the damage of oxidation air blower equipment due to pressure build-up operation, and the fracture of oxidation air pipe and its support, which may cause extremely serious consequences, such as the damage of oxidation air blower equipment not only brings high maintenance cost, but also leads to the shutdown of desulfurization system, which affects the normal operation of industrial production, and the fracture of oxidation air pipe and its support may cause safety accidents, which threatens the life safety of workers.

[0005] Therefore, in the face of various problems in the current desulfurization process, it is urgent to develop a device that can effectively prevent the blockage of oxidation air pipe and significantly improve the oxidation performance of desulfurization slurry, which has extremely important practical significance for improving the performance and stability of desulfurization system and ensuring the sustainable development of industrial production. UTILITY MODEL CONTENT

[0006] The existing oxidation air nozzles are small in diameter and complexly arranged within the tower, leading to a high risk of blockage in the oxidation air ducts. This problem not only affects the slurry oxidation rate, reducing desulfurization efficiency and limestone utilization, but can also lead to serious consequences such as damage to the oxidation blower equipment and breakage of the oxidation air duct and its bracket due to pressure buildup after blockage, threatening the safe and stable operation of the desulfurization system. Furthermore, when problems occur in the oxidation air ducts, oxidation efficiency and desulfurization efficiency decrease, gypsum dehydration becomes difficult, and absorption tower density becomes difficult to control, further impacting the overall performance and stability of the desulfurization system.

[0007] The purpose of the utility model is to overcome the shortcomings of the above-mentioned background technology and to provide a device for preventing clogging and enhancing the oxidation performance of desulfurization slurry.

[0008] In order to achieve the above-mentioned object, the technical solution of the utility model is: a device for preventing clogging and enhancing the oxidation performance of desulfurization slurry, characterized in that: it includes an oxidation air branch pipe, a plurality of the oxidation air branch pipes are arranged at intervals, the head end of the oxidation air branch pipe is located outside the absorption tower and connected to the elbow, and the tail end is located inside the absorption tower;

[0009] The oxidation air branch pipe is arranged obliquely, and the head end of the oxidation air branch pipe is higher than the tail end.

[0010] In the above technical solution, the inclination angle of the oxidation air branch pipe is 1-5°, and the angle at which the elbow connects to the oxidation air branch pipe is 91-95°.

[0011] In the above technical solution, multiple supporting steel beams are arranged at intervals inside the absorption tower; the oxidation air branch pipes on both sides are connected to the supporting steel beams, the middle of the middle oxidation air branch pipe is connected to the supporting steel beam, and the tail end is connected to the support plate on the inner wall of the absorption tower.

[0012] In the above technical solution, the oxidation air branch pipe is connected to the flushing water pipe.

[0013] In the above technical solution, the oxidation air branch pipe is provided with three rows of oxidation air holes, the first row of oxidation air holes is arranged at the bottom of the oxidation air branch pipe, and the second and third rows of oxidation air holes are located at 45° on both sides of the first row of oxidation air holes.

[0014] In the above technical solution, a pressure gauge is provided on the oxidation air branch pipe.

[0015] In the above technical solution, the oxidation air holes in the first row, the oxidation air holes in the second row, and the oxidation air holes in the third row are staggered.

[0016] In the above technical solution, the inner wall of the oxidation air branch pipe is sprayed with a corrosion-resistant coating.

[0017] In the above technical solution, an online monitoring device is installed to monitor the parameters in the oxidation air branch pipe and the oxidation state of the slurry in real time.

[0018] In the above technical solution, the installation is monitored in real time by the sensor to monitor the sulfite concentration in the slurry, and the intelligent flow control system automatically adjusts the oxidation air flow according to the concentration change.

[0019] Compared with the prior art, the utility model has the following advantages:

[0020] 1) The utility model can effectively reduce the risk of oxidation air branch pipe blockage, ensure sufficient oxygen in the slurry, improve the conversion rate of sulfite, improve the desulfurization efficiency and limestone utilization rate, prevent equipment damage and other problems caused by oxidation air branch pipe blockage, ensure the safe and stable operation of the desulfurization system, improve the dehydration performance of gypsum, well control the density of the absorption tower, improve the overall performance and stability of the desulfurization system, and provide reliable technical support for the waste gas treatment of industrial production.

[0021] 2) The utility model optimizes the structure and angle of the oxidation air branch pipe, so that the oxidation air is more evenly distributed in the tower, promotes the oxidation reaction of sulfite, thereby significantly improves the desulfurization efficiency, reduces the sulfur content in the waste gas, and better meets the environmental protection requirements.

[0022] 3) The utility model increases the number of oxidation air holes, so that the oxidation air can act on the slurry more comprehensively, further improves the oxidation effect, and provides strong guarantee for improving the desulfurization efficiency.

[0023] 4) The utility model reduces the residual slurry by increasing the number of oxidation air holes, avoids the deposition of slurry at the bottom, and reduces the risk of blockage from the source.

[0024] 5) The utility model reduces the occurrence of scaling by reducing the height of the oxidation air branch pipe tail gun and optimizing the angle, and reduces the possibility of oxidation air branch pipe blockage.

[0025] 6) The utility model can effectively remove the deposits and scale in the pipeline by connecting the flushing water pipeline, prevent blockage; the pressure gauge and the inspection are installed, which can timely find the pipeline blockage and process, avoid the deterioration of the blockage; the utility model can intelligently control the oxidation air flow, improve the oxidation efficiency while reducing the energy consumption, avoid the blockage risk caused by improper flow; the utility model adopts corrosion-resistant coating, prolongs the service life of the equipment, reduces the blockage problem caused by corrosion; regularly clean the oxidation air pipe, ensure that the pipeline always maintains good working condition, prevent blockage.

[0026] 7)The utility model installs on line monitoring equipment, real -time monitoring system operation state, when parameter is unusual, timely send early warning signal, make staff can take measures quickly, avoid problem to expand, guarantee the safe and stable operation of desulfurization system;The utility model comprehensively multiple anti -blocking measures, reduce the probability of oxidation air pipe blockage, reduce the equipment damage and shutdown maintenance condition caused by blockage, improve the reliability and stability of system.

[0027] 8)The utility model discloses the technical scheme simple structure, easy to install and operate, do not need complex technology and professional personnel to maintain;Adopt multiple economic practical measures, such as increasing air hole, access flush water pipe way etc., relatively low cost, have higher performance price ratio. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is the plan view of the utility model.

[0029] Figure 2 It is Figure 1 The sectional view of A1-A1 in it.

[0030] Figure 3 It is Figure 1 The sectional view of A2-A2 in it.

[0031] Figure 4 It is Figure 1 The sectional view of A3-A3 in it.

[0032] Figure 5 It is the bottom view of oxidation air branch pipe.

[0033] Figure 6 It is the front view of oxidation air branch pipe.

[0034] Figure 7 It is Figure 6 The enlarged view of B in it.

[0035] Among them, 100-oxidation air branch pipe, 110- elbow, 111- flange, 120- oxidation air hole, 130- corrosion -resistant coating, 200- absorption tower, 210- support steel beam, 220- support plate. DETAILED DESCRIPTION

[0036] The utility model will become more clear and easy to understand through the description that the embodiment of the utility model is described in detail below with accompanying drawings, but they do not constitute the limitation to the utility model, just for example.

[0037] As Figure 1As shown, a device for preventing clogging and enhancing the oxidation performance of desulfurization slurry is characterized in that it includes an oxidation air branch pipe 100, multiple oxidation air branch pipes 100 are arranged at intervals, the head end of the oxidation air branch pipe 100 is located outside the absorption tower 200 and connected to the elbow 110, and the tail end is located inside the absorption tower 200; one end of the elbow 110 is connected to the head end of the oxidation air branch pipe 100, and the other end is connected to the flange 111.

[0038] The oxidation air branch pipe 100 is tilted, and the head end of the oxidation air branch pipe 100 is higher than the tail end.

[0039] like Figures 2-4 As shown, the inclination angle of the oxidation air branch pipe 100 is 1-5°, and the angle at which the elbow 110 is connected to the oxidation air branch pipe 100 is 91-95°; such a design can effectively reduce the occurrence of scaling; after many tests and analyses, it is preferred that the angle between the oxidation air branch pipe 100 and the cross section inside the absorption tower 200 is 1° to 5°, and the angle at which the elbow 110 is connected is 91° to 95°; the setting of this angle range can make the distribution of the oxidation air in the absorption tower 200 more uniform, improve the oxidation efficiency, and reduce the local scaling problem caused by improper angles; the appropriate angle can make the oxidation air contact with the slurry in the best flow state, promote the oxidation reaction of sulfite, and avoid stagnation of the slurry in local areas, thereby reducing the possibility of scaling.

[0040] like Figure 1 As shown, multiple supporting steel beams 210 are arranged at intervals inside the absorption tower 200; the oxidation air branch pipes 100 on both sides are connected to the supporting steel beams 210, the middle of the middle oxidation air branch pipe 100 is connected to the supporting steel beam 210, and the tail end is connected to the support plate 220 on the inner wall of the absorption tower 200.

[0041] The oxidation air branch pipe 100 is connected to the flushing water pipe; when the unit is overhauled and the slurry is emptied, or before the unit is shut down for a short period of time and started up, the connected flushing water pipe is used to flush the horizontal oxidation air branch pipes in the tower to prevent scale from remaining in these pipes; the access of flushing water can effectively remove sediment and scale in the pipe and keep the pipe unobstructed; its principle is to use the pressure and flow of flushing water to flush out impurities in the pipe to prevent blockage.

[0042] like Figures 5-7As shown, the oxidation air branch pipe 100 is provided with three rows of oxidation air holes 120, the first row of oxidation air holes 120 is arranged at the bottom of the oxidation air branch pipe 100, and the second and third rows of oxidation air holes 120 are located at 45 degrees on both sides of the first row of oxidation air holes 120; the number of oxidation air holes 120 is increased to reduce the residual slurry; the oxidation air branch pipe 100 of the prior art is only provided with two rows of oxidation air holes 120, which are arranged at 45 degrees on both sides of the pipeline, and no oxidation air hole is arranged directly below the pipeline, so that after the oxidation air fan stops running, the slurry in the absorption tower is emptied, and the slurry in the oxidation air branch pipe 100 cannot flow out and is deposited on the bottom wall; the utility model increases one row of oxidation air holes 120 with a diameter of 9 mm directly below each oxidation air branch pipe 100 in the absorption tower 200, and a total of three rows of oxidation air holes 120 are arranged, which can greatly reduce the residual amount of slurry in the oxidation air branch pipe 100 after the slurry in the absorption tower 200 is emptied; the additional row of oxidation air holes 120 can make the oxidation air also fully flow below the pipeline, avoiding the deposition of slurry at the bottom, and the principle is that by increasing the number and distribution of oxidation air holes 120, the oxidation air can act on the slurry more comprehensively, improving the oxidation effect, reducing the residual slurry and reducing the risk of blockage.

[0043] A pressure gauge is arranged on the oxidation air branch pipe 100; the pressure gauge is arranged on each oxidation air branch pipe 100, and the newly arranged pressure gauges are included in the normal inspection items, so as to monitor the air pressure of each oxidation air branch pipe 100; the pressure gauge can reflect the pressure in the pipeline in real time, and is used as a basis for judging the blockage of the pipeline. When the branch pipe is blocked by the pressure gauge, the blocked pipeline is flushed in time. In this way, problems can be found in time and measures can be taken to avoid the deterioration of the blockage. The scientific basis is that when the pipeline is blocked, the air pressure will change, and the flow condition of the pipeline can be judged by monitoring the change of the air pressure, so that corresponding maintenance measures can be taken.

[0044] As shown in the figure, Figure 5 The first row of oxidation air holes 120, the second row of oxidation air holes 120 and the third row of oxidation air holes 120 are arranged in a staggered manner.

[0045] A corrosion-resistant coating 130 is sprayed on the inner wall of the oxidation air branch pipe 100; the inner wall of the oxidation air branch pipe 100 and related parts is sprayed with a corrosion-resistant coating to enhance its corrosion resistance. In the desulfurization process, the slurry may contain corrosive substances, which will cause corrosion of the pipeline under long-term action, thereby increasing the risk of blockage; the corrosion-resistant coating 130 can effectively protect the inner wall of the pipeline, prolong the service life of the equipment and reduce the possibility of blockage; the scientific basis is that a protective layer is formed on the inner wall of the pipeline to prevent corrosive substances from directly contacting the pipeline and reduce the accumulation of corrosion products, thereby keeping the pipeline unblocked.

[0046] Online monitoring equipment is installed to monitor the parameters within the oxidation air branch pipe 100 and the oxidation state of the slurry in real time. If any abnormal parameters are detected, the online monitoring equipment automatically issues an early warning signal, alerting staff to take timely action. For example, a significant drop in air speed or an abnormal increase in pressure could indicate an increased risk of pipe blockage. This online monitoring equipment helps staff identify and address problems promptly, preventing them from escalating. It utilizes advanced sensor technology and data analysis algorithms to provide real-time monitoring and early warning of system operating status.

[0047] An intelligent flow control system is installed that monitors the sulfite concentration in the slurry in real time through sensors and automatically adjusts the oxidation air flow rate according to changes in concentration; the intelligent flow control system automatically adjusts the oxidation air flow rate according to the real-time status of the slurry in the absorption tower 200 (such as slurry concentration, oxidation degree, etc.); when the slurry oxidation demand is high, the oxidation air flow rate is increased; when the oxidation degree reaches a certain level, the flow rate is appropriately reduced to save energy and avoid excessive oxidation; for example, the sulfite concentration in the slurry is monitored by sensors, and when the concentration is high, the oxidation air flow rate is automatically increased to promote the rapid oxidation of sulfites; its scientific principle is based on real-time feedback and automatic control technology to achieve precise adjustment of the oxidation air flow rate, thereby improving oxidation efficiency while reducing energy consumption and clogging risks.

[0048] In actual use, there are 6 oxidation air branch pipes 100, and the spacing between adjacent oxidation air branch pipes 100 is 2000mm; there are 5 supporting steel beams 210, and the spacing between adjacent supporting steel beams 210 is 1900mm; Figure 4 Taking the oxidation air branch 100 as an example, the oxidation air branch 100 between adjacent supporting steel beams 210 is provided with 30 oxidation air holes 120, and the spacing between the oxidation air holes 120 is 60 mm; the oxidation air branch 100 between the first supporting steel beam 210 on the left end and 1500 mm to its left is provided with 25 oxidation air holes 120, and the spacing between the oxidation air holes 120 is 60 mm; the oxidation air branch 100 between the first supporting steel beam 210 on the right end and 700 mm to its right is provided with 11 oxidation air holes 120, and the spacing between the oxidation air holes 120 is 60 mm.

[0049] Example 1: Application of limestone-gypsum desulfurization system in thermal power plant

[0050] The desulfurization system of a thermal power plant uses the anti-clogging device for enhancing the oxidation performance of desulfurization slurry. Before implementation, the desulfurization system often encountered the problem of blockage of the oxidation air branch pipe 100, resulting in reduced desulfurization efficiency and increased equipment maintenance costs.

[0051] According to the technical scheme of the utility model, the height of the tail part spray gun of the oxidizing air branch pipe 100 in the absorption tower 200 is adjusted, the tail part spray gun side of the oxidizing air branch pipe 100 is higher than the oxidizing air branch pipe 100, the angle between the oxidizing air branch pipe 100 and the cross section in the tower is 2 DEG, and the angle of the bend 110 is 92 DEG.

[0052] A row of oxidizing air holes 120 with a diameter of 9 mm are added below each oxidizing air branch pipe 100, and three rows of oxidizing air holes 120 are formed.

[0053] An intelligent flow control system is installed, the concentration of sulfite in the slurry is monitored in real time through a sensor, the oxidizing air flow is automatically adjusted according to the concentration change, a pressure gauge is installed on the oxidizing air branch pipe, and the pressure gauge is included in the inspection project; meanwhile, an online monitoring device is installed, the parameters in the oxidizing air pipe and the oxidation state of the slurry are monitored in real time, a flushing water pipeline is connected, and flushing is performed before unit maintenance and short-term stop.

[0054] After the utility model is implemented, the oxidizing air branch pipe 100 of the desulfurization system of the thermal power plant does not have a blockage phenomenon after a period of operation, the desulfurization oxidizing air system is kept in an optimal state and runs, the oxidizing air volume reaches the design value, the slurry in the absorption tower 200 is fully oxidized, the quality of the slurry is gradually improved, and the safe, stable and environmentally-friendly operation of the desulfurization system is ensured; the intelligent flow control system effectively saves energy and avoids excessive oxidation; the pressure gauge and the online monitoring device can timely find potential blockage problems and facilitate timely processing by staff; and the connection of the flushing water pipeline ensures the cleanliness of the pipeline and reduces the accumulation of scale.

[0055] Embodiment 2: Steel enterprise wet desulfurization device modification

[0056] The wet desulfurization device of a certain steel enterprise has poor oxidation performance and blockage problems, which affect the environmental protection standard and production efficiency of the enterprise; the original oxidizing air branch pipe 100 is modified by adopting the utility model, the height of the tail part spray gun of the oxidizing air branch pipe 100 is reduced, the angle is adjusted to 3 DEG, the angle of the bend 110 is 93 DEG, the number of rows of oxidizing air holes 120 is increased, and a row of oxidizing air holes 120 is added below the oxidizing air branch pipe 100; advanced online monitoring equipment and an intelligent flow control system are installed, real-time monitoring and automatic adjustment of the system are realized, the oxidizing air pipe is cleaned regularly, a cleaning plan is formulated, and the pipe is cleaned once every quarter; the oxidizing air branch pipe 100 and related parts are sprayed with a corrosion-resistant coating 130, and the corrosion resistance is enhanced.

[0057] The modified desulfurization device runs stably, and the blockage problem is effectively solved; the oxidation performance of the desulfurization slurry is obviously improved, and the environmental protection index of the enterprise is improved; the corrosion-resistant coating 130 prolongs the service life of the equipment and reduces the maintenance cost; regular cleaning ensures the long-term stable operation of the device and improves the production efficiency.

[0058] In summary, the utility model can play the remarkable effect in different application scene, provides effective solution for solving the blockage problem of desulfurization system and improving oxidation performance.

[0059] Other unexplained parts belong to the prior art.

Claims

1. A device for preventing clogging of the oxidation performance of a fortified desulfurization slurry, characterized by: The oxidation air branch pipe (100) is arranged at the outer side of the absorption tower (200) and connected with the elbow (110) at the head end and arranged at the inner side of the absorption tower (200) at the tail end. The oxidation air branch pipe (100) is arranged at the outer side of the absorption tower (200) and connected with the elbow (110) at the head end and arranged at the inner side of the absorption tower (200) at the tail end.

2. The device for preventing clogging and strengthening the oxidation performance of desulfurization slurry according to claim 1, characterized in that: The oxidation air branch pipe (100) is arranged at the outer side of the absorption tower (200) and connected with the elbow (110) at the head end and arranged at the inner side of the absorption tower (200) at the tail end.

3. The device for preventing clogging and strengthening the oxidation performance of desulfurization slurry according to claim 1, characterized in that: The absorption tower (200) is provided with a plurality of support steel beams (210) arranged at intervals; the oxidation air branch pipes (100) at both sides are connected with the support steel beams (210), and the middle oxidation air branch pipe (100) is connected with the support steel beams (210) at the middle part and connected with the support plate (220) on the inner wall of the absorption tower (200) at the tail end.

4. The device for preventing clogging and strengthening the oxidation performance of desulfurization slurry according to claim 1, characterized in that: The oxidation air branch pipe (100) is connected with the flushing water pipeline.

5. The device for preventing clogging and enhancing oxidation performance of a fortified desulfurization slurry according to claim 1, characterized in that: The oxidation air branch pipe (100) is provided with three rows of oxidation air holes (120), the first row of oxidation air holes (120) is arranged at the bottom of the oxidation air branch pipe (100), and the second and third rows of oxidation air holes (120) are arranged at 45° on both sides of the first row of oxidation air holes (120).

6. The device for preventing clogging and enhancing oxidation performance of the enhanced desulfurization slurry according to claim 4, characterized in that: The oxidation air branch pipe (100) is provided with a pressure gauge.

7. The device for preventing clogging and enhancing oxidation performance of the enhanced desulfurization slurry according to claim 5, characterized in that: The first, second and third rows of oxidation air holes (120) are arranged in a staggered manner.

8. The device for preventing clogging and strengthening the oxidation performance of desulfurization slurry according to claim 1, characterized in that: The inner wall of the oxidation air branch pipe (100) is sprayed with a corrosion-resistant coating (130).

9. The device for preventing clogging and enhancing oxidation performance of a fortified desulfurization slurry according to claim 6, characterized in that: An online monitoring device is installed to monitor the parameters in the oxidation air branch pipe (100) and the oxidation state of the slurry in real time.

10. The device for preventing clogging and enhancing oxidation performance of a fortified desulfurization slurry according to claim 9, characterized in that: An intelligent flow control system is installed to monitor the concentration of sulfite in the slurry in real time through a sensor and automatically adjust the flow of oxidation air according to the concentration change.

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