System for treating particles subjected to secondary pollution of wet desulphurization lime liquid medicine

Abstract

The utility model discloses a system for treating secondary pollution particles of wet desulphurization lime liquid medicine, which comprises a desulfurizing tower, a water inlet tank arranged at the bottom end of one side of the desulfurizing tower, a water pump arranged at the top end of the water inlet tank, a flow guide mechanism arranged at the top end of the water pump, and a conveying inlet arranged at the top end of one side of the desulfurizing tower and matched with the flow guide mechanism. The top end of the diversion mechanism penetrates through the conveying inlet and is provided with a spraying mechanism; the top end of the desulfurization tower is provided with an exhaust chimney. The utility model has a scientific and novel structure, and can reduce the generation of particulate matters, promote deep dehydration and shorten the treatment time through clean water flushing, thereby reducing the resistance of the demister, reducing the wet electrostatic dust collection load, reducing the burden of subsequent equipment and lowering the cost; meanwhile, the system adopts a multi-component collaborative design, a reasonable process is planned through the flow guide mechanism, the treatment area is enlarged through the spraying mechanism, efficient and deep treatment of the flue gas can be realized, and the overall treatment efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of flue gas purification technology and equipment, in particular to a system for treating secondary polluted particulate matter of wet desulfurization lime syrup. Background Art

[0002] With the deepening of industrialization, harmful gases such as sulfur dioxide in industrial waste gas have become an important source of environmental pollution. With the expansion of industrial scale, the problem of flue gas desulfurization has gradually attracted people's attention. Wet desulfurization technology is a technology for treating dusty and sulfur-containing flue gas based on the adsorption reaction principle of sulfur dioxide and alkaline solution (such as limestone aqueous solution). It uses a simple and practical method of solution adsorption of sulfur dioxide. Compared with dry desulfurization, it has lower cost and more convenient operation. With the improvement of desulfurization efficiency, wet desulfurization technology has been deeply promoted in the power, steel and other industries. Through the continuous optimization of desulfurization tower structure and control system, the desulfurization efficiency can reach more than 96%. After nearly a century of development, wet desulfurization technology has matured and been widely used. It has made important contributions to protecting the environment and saving resources.

[0003] For example, Chinese patent CN218688116U discloses a wet desulfurization equipment, including a base, a desulfurizer preparation component, a spray component, an absorption tower, an exhaust pipe, an air intake pipe, a mounting frame, a mobile cleaning component and a filter plate, wherein the mounting frame and the filter plate are fixedly installed in the absorption tower, which can realize the cleaning of the filter plate, prevent the filter plate from being blocked, and do not affect the circulation and practicality of the desulfurizer. However, the above-mentioned wet desulfurization equipment has the following shortcomings in the specific application process: since the desulfurization liquid used in the traditional wet desulfurization is composed of limestone powder less than 80 mesh and water mixed, and then sprayed to the flue gas through the desulfurization water pump, during the spraying process, due to the high temperature and fast flow rate of the flue gas, a small amount of ultrafine limestone powder particles are often taken away, resulting in an increase in particulate matter emissions, thereby increasing the subsequent dust removal load and increasing power consumption; at the same time, the additional particulate matter needs to consume more energy for dust removal again, which reduces the desulfurization treatment efficiency of the entire device and increases maintenance costs.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0005] In view of the problems in the related technology, the utility model proposes a system for treating secondary contaminated particulate matter in wet desulfurization lime syrup to overcome the above technical problems existing in the existing related technology.

[0006] To this end, the specific technical solutions adopted by the utility model are as follows:

[0007] A system for treating secondary contaminated particulate matter from wet desulfurization lime syrup comprises a desulfurization tower, a water inlet tank is arranged at the bottom end of one side of the desulfurization tower, a water pump is arranged at the top of the water inlet tank, a flow guide mechanism is arranged at the top of the water pump, a delivery inlet matched with the flow guide mechanism is opened at the top of one side of the desulfurization tower, a spray mechanism is arranged at the top of the flow guide mechanism and passes through the delivery inlet, and an exhaust chimney is arranged at the top of the desulfurization tower.

[0008] Furthermore, in order to achieve efficient transportation and utilization of clean water, reduce the discharge of particulate matter while replenishing water by wet method, and improve the cleaning effect and processing capacity of the system, the diversion mechanism includes a plurality of fixed components arranged on one side of the desulfurization tower, and a delivery pipe matched with the fixed component is arranged at the top of the water pump, an L-shaped elbow penetrating the delivery inlet is arranged at the top of the delivery pipe, and a support component matched with the desulfurization tower is sleeved on the outer side of the L-shaped elbow, the fixed component includes a first support rod penetrating one side of the desulfurization tower, a first supporting semicircular ring is arranged at one end of the first support rod, and a first fixed semicircular ring is arranged on one side of the first supporting semicircular ring, the support component includes a second support rod penetrating one side of the desulfurization tower, a second supporting semicircular ring is arranged at one end of the second support rod, and a second fixed semicircular ring is arranged on one side of the second supporting semicircular ring.

[0009] Furthermore, in order to achieve the goal of increasing the contact area between liquid and particulate matter, promoting the flushing effect, reducing the generation of particulate matter, and reducing the load of wet electrostatic dust removal, the spray mechanism includes a conveying pipe network arranged at one end of the L-shaped elbow, and connecting pipes are arranged in the middle of both sides and the middle of both ends of the bottom of the conveying pipe network, and an inlet flange pipe is arranged at the bottom end of the connecting pipe, and a fixed joint is arranged inside the inlet flange pipe, and an in-pipe clamping part is arranged inside the fixed joint, and an outlet flange pipe matching the fixed joint is arranged at the bottom end of the inlet flange pipe, and diverter pipes are penetrated on both sides of the outlet flange pipe, and a flange joint is arranged at the bottom end of the diverter pipe, and an atomization assembly is arranged at the bottom end of the flange joint, and the atomization assembly includes a conical tube arranged at the bottom end of the flange joint, a vortex chamber is arranged at one end of the conical tube, and an eccentric nozzle is penetrated at one end of the vortex chamber.

[0010] The beneficial effects of the utility model are:

[0011] 1. The structure of the utility model is scientific and novel. It can reduce the generation of particulate matter by flushing with clean water, promote deep dehydration, shorten the processing time, thereby reducing the resistance of the demister, reducing the load of wet electrostatic dust removal, reducing the burden on subsequent equipment, and reducing costs; at the same time, the system adopts a multi-component collaborative work design, plans a reasonable process through the diversion mechanism, and expands the processing area through the spray mechanism, which can achieve efficient and deep treatment of flue gas and improve the overall processing efficiency; in addition, the system's efficient spraying can reduce the emission of tail gas particulate matter generated after desulfurization, and by adopting closed treatment, the impact on the environment during the treatment process is reduced, thereby reducing the generation of particulate matter, reducing the load of the induced draft fan, reducing the melting kiln pressure, and greatly reducing the power consumption of the entire system.

[0012] 2. By setting up a diversion mechanism, the conveying pipeline is fixed to the outside of the desulfurization tower through the support component and the fixing component, so as to prevent the conveying pipeline from moving and deforming due to external forces such as wind, which affects the conveying effect; at the same time, the mechanism effectively guides the flow of clean water through the diversion effect of the conveying pipeline and the L-shaped elbow, and transports the clean water from the outside to the inside, providing sufficient water for spraying for the spraying mechanism; in addition, the mechanism realizes efficient transportation and utilization of clean water by reasonably arranging various working components, reduces the discharge of particulate matter while replenishing water in the wet method, thereby improving the cleaning effect and processing capacity of the system.

[0013] 3. By setting up a spray mechanism, multiple atomizing components can be used for spraying together, so as to form a liquid atomization spray covering the entire treatment area, so that the liquid can evenly cover the entire area; at the same time, through the cooperation of the vortex chamber and the eccentric nozzle, the water flow forms a vortex in the vortex chamber, and after acceleration, it is sprayed out from the eccentric nozzle in an umbrella shape, and the atomization is particularly uniform; in addition, after the liquid produced by the eccentric nozzle is atomized, the droplet size is small and the surface area is large, which can effectively increase the contact area between the liquid and the particles, promote the flushing effect of the spray mechanism, reduce the generation of particles, and thus reduce the load of wet electrostatic dust removal. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a structural schematic diagram of a system for treating secondary contaminated particulate matter in wet desulfurization lime syrup according to an embodiment of the utility model;

[0016] Figure 2 It is a partial structural schematic diagram of a system for treating secondary contaminated particulate matter of wet desulfurization lime syrup according to an embodiment of the utility model;

[0017] Figure 3 yes Figure 2 A partial enlarged view of the middle A;

[0018] Figure 4 yes Figure 2 A partial enlarged view of point B in the middle;

[0019] Figure 5 It is a partial structural schematic diagram of a spray mechanism in a system for treating secondary contaminated particles of wet desulfurization lime solution according to an embodiment of the utility model;

[0020] Figure 6 It is a structural schematic diagram of an atomizing component in a system for treating secondary contaminated particulate matter in wet desulfurization lime syrup according to an embodiment of the utility model.

[0021] In the figure:

[0022] 1. Desulfurization tower; 2. Water inlet tank; 3. Water pump; 4. Diversion mechanism; 401. Fixed assembly; 4011. First support rod; 4012. First support semicircular ring; 4013. First fixed semicircular ring; 402. Delivery pipeline; 403. L-shaped elbow; 404. Support assembly; 4041. Second support rod; 4042. Second support semicircular ring; 4043. Second fixed semicircular ring; 5. Delivery inlet; 6. Spray mechanism; 601. Delivery pipe network; 602. Connecting pipe; 603. Inlet flange pipe; 604. Fixed joint; 605. In-pipe compression piece; 606. Outlet flange pipe; 607. Diverter pipe; 608. Flange joint; 609. Atomization assembly; 6091. Conical pipe; 6092. Vortex chamber; 6093. Eccentric nozzle; 7. Exhaust chimney. DETAILED DESCRIPTION

[0023] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementation methods and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0024] According to an embodiment of the utility model, a system for treating secondary contaminated particulate matter in wet desulfurization lime syrup is provided.

[0025] The present invention is now further described in conjunction with the accompanying drawings and specific implementation methods. Figure 1-Figure 6As shown, a system for treating secondary contaminated particulate matter of wet desulfurization lime syrup according to an embodiment of the utility model includes a desulfurization tower 1, a water inlet tank 2 is arranged at the bottom end of one side of the desulfurization tower 1, a water pump 3 is arranged at the top of the water inlet tank 2, a flow guide mechanism 4 is arranged at the top of the water pump 3 (in addition, in specific applications, the water pump 3 adopts a flow rate of 150m³ / h water pump), a conveying inlet 5 matched with the flow guide mechanism 4 is opened at the top of one side of the desulfurization tower 1, a spray mechanism 6 is arranged at the top of the flow guide mechanism 4 and passes through the conveying inlet 5, and an exhaust chimney 7 is arranged at the top of the desulfurization tower 1.

[0026] In addition, it should be noted that the desulfurization tower 1 includes a treatment chamber, a spraying device, an exhaust duct and a demister. The bottom of the tower is divided into an alkaline slurry pool. The dust-containing and sulfur-containing flue gas flow from the boiler first enters the treatment chamber and contacts with the atomized alkaline slurry supplied by the spraying device. The dust-containing and sulfur-containing flue gas flow is sprayed and washed by the alkaline slurry, and then the treated gas-liquid mixture enters the demister through the exhaust duct, and the gas-liquid separation is carried out by the demister. Finally, the separated airflow flows upward and is discharged through the exhaust chimney 7. This is the prior art and will not be elaborated here.

[0027] With the help of the above-mentioned technical scheme of the utility model, the structure of the utility model is scientific and novel, and can reduce the generation of particulate matter through clean water flushing, promote deep dehydration, shorten the processing time, thereby reducing the resistance of the demister, reducing the load of wet electrostatic dust removal, reducing the burden on subsequent equipment, and reducing costs; at the same time, the system adopts a multi-component collaborative design, plans a reasonable process through the guide mechanism 4, and expands the processing area through the spray mechanism 6, which can achieve efficient and deep treatment of the flue gas and improve the overall processing efficiency.

[0028] In one embodiment, for the above-mentioned guide mechanism 4, the guide mechanism 4 includes a plurality of fixed components 401 arranged on one side of the desulfurization tower 1, and a conveying pipe 402 matched with the fixed component 401 is arranged at the top of the water pump 3 (in addition, in specific applications, the conveying pipe 402 adopts a stainless steel pipe with a diameter of 200 mm and a length of 55 m), an L-shaped elbow 403 penetrating the conveying inlet 5 is arranged at the top of the conveying pipe 402, and a support component 404 matched with the desulfurization tower 1 is sleeved on the outer side of the L-shaped elbow 403, and the fixed component 401 includes a first support rod 4011 penetrating one side of the desulfurization tower 1, a first support semicircular ring 4012 is arranged at one end of the first support rod 4011, and a first fixed semicircular ring 4013 is arranged on one side of the first support semicircular ring 4012 (in addition, at In specific applications, the first supporting semicircular ring 4012 is connected to the first fixed semicircular ring 4013 by bolts), the supporting assembly 404 includes a second supporting rod 4041 passing through one side of the desulfurization tower 1, a second supporting semicircular ring 4042 is provided at one end of the second supporting rod 4041, and a second fixed semicircular ring 4043 is provided on one side of the second supporting semicircular ring 4042 (in addition, in specific applications, the second supporting semicircular ring 4042 is connected to the second fixed semicircular ring 4043 by bolts), thereby achieving the purpose of fixing the conveying pipeline 402 on the outside of the desulfurization tower through the supporting assembly 404 and the fixing assembly 401, and through the guiding effect of the conveying pipeline 402 and the L-shaped elbow 403, effectively guiding the flow of clean water, and conveying the clean water from the outside to the inside, providing sufficient water for spraying for the spraying mechanism.

[0029] The working principle of the guide mechanism 4 is as follows: first, the delivery pipe 402 is fixed by tightening the first supporting semicircular ring 4012 and the first fixed semicircular ring 4013 by bolts, and then the L-shaped elbow 403 is fixed by tightening the second supporting semicircular ring 4042 and the second fixed semicircular ring 4043 by bolts, so as to guide the clean water delivered by the water pump 3 to enter from the delivery pipe 402, then be sent out from the L-shaped elbow 403, and finally be delivered to the spray mechanism 6.

[0030] In one embodiment, for the above-mentioned spray mechanism 6, the spray mechanism 6 includes a delivery pipe network 601 arranged at one end of the L-shaped elbow pipe 403, and connecting pipes 602 are arranged at the middle of both sides and the middle of both ends of the bottom end of the delivery pipe network 601, and the bottom end of the connecting pipe 602 is provided with an inlet flange pipe 603, and the interior of the inlet flange pipe 603 is provided with a fixed joint 604 (in addition, in specific applications, the fixed joint 604 is connected to the inlet flange pipe 603 and the outlet flange pipe 606 by threads), and the interior of the fixed joint 604 is provided with an inner pipe pressing member 605, and the bottom end of the inlet flange pipe 603 is provided with an outlet flange pipe 606 matched with the fixed joint 604 (in addition, in specific applications, the inlet flange pipe 606 is connected to the inlet flange pipe 603 by threads). The flange pipe 603 and the outlet flange pipe 606 are fixed to the outer flange plate by bolts), the two sides of the outlet flange pipe 606 are penetrated by a diverter pipe 607, the bottom end of the diverter pipe 607 is provided with a flange joint 608, the bottom end of the flange joint 608 is provided with an atomization component 609, the atomization component 609 includes a tapered tube 6091 arranged at the bottom end of the flange joint 608, one end of the tapered tube 6091 is provided with a vortex chamber 6092, and one end of the vortex chamber 6092 is penetrated by an eccentric nozzle 6093, thereby realizing the common spraying through multiple atomization components 609 to form a clean water atomization spray covering the entire flue gas treatment area, effectively increasing the contact area between liquid and particulate matter, and improving the flushing effect.

[0031] The working principle of the spray mechanism 6 is as follows: first, the inlet flange pipe 603 and the outlet flange pipe 606 are screwed and fixed by the fixed joint 604. When the clean water transported from the diversion mechanism 4 enters the delivery network 601 from the L-shaped elbow 403, it is sent to the inlet flange pipe 603 through the connecting pipe 602, and then flows through the inner tube clamp 605 inside the fixed joint 604. Since the diameter of the bottom end of the inner tube clamp 605 becomes smaller, the water flow rate becomes larger and the pressure becomes larger, thereby pressurizing the water flow once, and then flows out from the outlet flange pipe 606, and then flows into the atomization component 609 through the diversion pipe 607 for atomization.

[0032] As the inner diameter of the bottom end of the tapered tube 6091 becomes smaller, the flow velocity and pressure of the water flow increase, thereby subjecting the water flow to a second pressurization and flowing into the vortex chamber 6092 at a high speed. The water flow rotates along the cavity wall in the vortex chamber 6092. Under the action of centrifugal force, the adhesion between water molecules is stretched, and the surface tension of the liquid increases, causing the liquid to become many small droplets, which are finally sprayed out from the eccentric nozzle 6093 in an umbrella shape. When the small droplets leave the eccentric nozzle 6093, they will maintain a certain degree of rotational motion due to the action of momentum, which makes the droplet distribution more uniform, thereby realizing atomization spraying of the flue gas.

[0033] In order to facilitate understanding of the above technical solution of the present invention, the working principle or operation method of the present invention in the actual process is described in detail below.

[0034] In actual application, first, by starting the water pump 3, the water in the water inlet tank 2 is transported to the guide mechanism 4 (the working principle of the guide mechanism 4 is as described above), and the water is transported from the outside of the desulfurization tower 1 to the spray mechanism 6 inside (the working principle of the spray mechanism 6 is as described above), and then the water is atomized and sprayed to the flue gas through the spray mechanism 6, and the flue gas is fully sprayed and washed, so as to remove the limestone powder particles entrained in the flue gas, reduce the emission of particulate matter, and reduce the subsequent dust removal load.

[0035] To sum up, with the help of the above-mentioned technical scheme of the utility model, the structure of the utility model is scientific and novel, and can reduce the generation of particulate matter through clean water flushing, promote deep dehydration, shorten the processing time, thereby reducing the resistance of the demister, reducing the load of wet electrostatic dust removal, reducing the burden on subsequent equipment, and reducing costs. At the same time, the system adopts a multi-component collaborative design, plans a reasonable process through the guide mechanism 4, and expands the processing area through the spray mechanism 6, which can achieve efficient and deep processing of flue gas and improve the overall processing efficiency; by setting the guide mechanism 4, the efficient transportation and utilization of clean water is realized, and the discharge of particulate matter is reduced while wet water replenishment, thereby improving the cleaning effect and processing capacity of the system; by setting the spray mechanism 6, the liquid atomization spray covering the entire processing area is realized, so that the liquid can evenly cover the entire area and the flue gas is fully sprayed and washed.

[0036] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A system for treating secondary contaminated particles in wet desulfurization lime syrup, comprising a desulfurization tower (1), characterized in that: A water inlet box (2) is arranged at the bottom end of one side of the desulfurization tower (1), a water pump (3) is arranged at the top end of the water inlet box (2), a flow guide mechanism (4) is arranged at the top end of the water pump (3), a delivery inlet (5) matched with the flow guide mechanism (4) is opened at the top end of one side of the desulfurization tower (1), a spray mechanism (6) is arranged at the top end of the flow guide mechanism (4) and passes through the delivery inlet (5), and an exhaust chimney (7) is arranged at the top end of the desulfurization tower (1).

2. A system for treating secondary contaminated particles in wet desulfurization lime solution according to claim 1, characterized in that: The flow guide mechanism (4) comprises a plurality of fixed components (401) arranged on one side of the desulfurization tower (1), and a delivery pipeline (402) matching with the fixed component (401) is arranged at the top of the water pump (3), an L-shaped elbow (403) penetrating the delivery inlet (5) is arranged at the top of the delivery pipeline (402), and a support component (404) matching with the desulfurization tower (1) is sleeved on the outer side of the L-shaped elbow (403).

3. A system for treating secondary contaminated particles in wet desulfurization lime solution according to claim 2, characterized in that: The fixing assembly (401) comprises a first support rod (4011) penetrating one side of the desulfurization tower (1); a first supporting semicircular ring (4012) is arranged at one end of the first support rod (4011); and a first fixing semicircular ring (4013) is arranged at one side of the first supporting semicircular ring (4012); The support assembly (404) comprises a second support rod (4041) penetrating one side of the desulfurization tower (1), a second support semicircular ring (4042) being provided at one end of the second support rod (4041), and a second fixed semicircular ring (4043) being provided at one side of the second support semicircular ring (4042).

4. A system for treating secondary contaminated particles in wet desulfurization lime solution according to claim 2, characterized in that: The spray mechanism (6) comprises a delivery pipe network (601) arranged at one end of the L-shaped curved pipe (403), connecting pipes (602) are arranged at the middle of both sides and the middle of both ends of the bottom end of the delivery pipe network (601), and an inlet flange pipe (603) is arranged at the bottom end of the connecting pipe (602).

5. A system for treating secondary contaminated particles in wet desulfurization lime solution according to claim 4, characterized in that: The inlet flange pipe (603) is provided with a fixed joint (604) inside, and the fixed joint (604) is provided with an in-tube pressing piece (605) inside. The bottom end of the inlet flange pipe (603) is provided with an outlet flange pipe (606) that matches the fixed joint (604).

6. A system for treating secondary contaminated particles in wet desulfurization lime solution according to claim 5, characterized in that: A diversion pipe (607) is provided through both sides of the outlet flange pipe (606), a flange joint (608) is provided at the bottom end of the diversion pipe (607), and an atomization assembly (609) is provided at the bottom end of the flange joint (608).

7. A system for treating secondary contaminated particles in wet desulfurization lime solution according to claim 6, characterized in that: The atomization assembly (609) comprises a tapered tube (6091) arranged at the bottom end of the flange joint (608), one end of the tapered tube (6091) is provided with a vortex chamber (6092), and one end of the vortex chamber (6092) is penetrated by an eccentric nozzle (6093).

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