Desulfurization device for recycling calcined dolomite dust-removing powder waste

Abstract

The utility model belongs to the field of desulfurization, and particularly relates to a calcined dolomite dust removal powder waste recycling desulfurization device which comprises a reaction tower, an air inlet pipe is fixedly connected to the top of the left side of the reaction tower, a slurry spraying assembly is arranged at the top in the reaction tower, and a cleaning assembly is arranged in the reaction tower. The top of the right side of the reaction tower is fixedly connected with a gas outlet pipe; when sulfur dioxide-containing gas is sprayed into the reaction tower through the gas inlet pipe, the flowing gas can push the communicating plate to rotate, limestone slurry is injected into the conveying pipe through the feeding pipe, and the slurry sprayed out in a rotating manner and the sprayed gas are fully mixed, so that the desulfurization efficiency is improved; in the desulfurization process, the annular cleaning block slides up and down on the inner wall of the reaction tower in a reciprocating manner, and at the moment, the annular cleaning block removes calcium sulfate particles adhered to the inner wall of the reaction tower, so that the formation of scale deposition can be reduced, and the normal operation of a desulfurization system is ensured.

Description

Technical Field

[0001] The utility model relates to the field of desulfurization, in particular to a desulfurization device for recycling and reusing calcined white dust removal powder waste. Background Art

[0002] A large amount of high-sulfur flue gas is generated during the production of magnesium metal. If the flue gas is not treated, it will have an adverse effect on the health of employees in the production area and will also pollute the environment. During the calcination process of rotary kiln, a large amount of calcined white dust removal powder that is difficult to dissolve in water is generated. It is usually treated as solid waste and is prone to cause certain dust pollution during the treatment process. The main component of calcined white dust removal powder is calcium oxide, which can be used as a desulfurizer with low cost. Therefore, it can be recycled to replace the original desulfurizer. It is processed into a desulfurization absorption slurry with a suitable proportion to react with sulfur-containing sulfur dioxide in the flue gas to form a stable calcium sulfate substance, thereby reducing the emission of sulfur dioxide in the flue gas and the emission of solid waste, thereby eliminating pollution to the environment to a certain extent.

[0003] At present, in the process of desulfurization using calcium oxide, the calcium oxide is usually first crushed and mixed with water to form a mixture of limestone and gypsum stone, and the mixture is in a slurry state. The mixture is then mixed with flue gas containing sulfur dioxide, and the two are reacted until the sulfur dioxide is converted into calcium sulfate. However, if the mixture of limestone and gypsum stone cannot be quickly mixed with the ejected flue gas, the reaction rate will be reduced, and it may also cause incomplete reaction so that the exhaust flue gas still contains sulfur dioxide, thereby endangering personnel health. Therefore, in view of the above problems, a desulfurization device for recycling and reusing calcined white dust removal powder waste is proposed. Utility Model Content

[0004] In order to make up for the shortcomings of the prior art and avoid the problem of insufficient reaction between the mixture and the flue gas, the utility model proposes a desulfurization device for recycling and reusing calcined ash dust waste.

[0005] The utility model solves the technical problem by adopting the following technical solution: a desulfurization device for recycling and reusing calcined white dust removal powder waste, comprising a reaction tower, the top of the left side of the reaction tower is fixedly connected with an air inlet pipe, the top of the inside of the reaction tower is provided with a slurry spraying assembly, the inside of the reaction tower is provided with a cleaning assembly, the top of the right side of the reaction tower is fixedly connected with an air outlet pipe, and the bottom of the right side of the reaction tower is fixedly connected with a discharge pipe;

[0006] The slurry spraying assembly includes a transport pipe fixedly installed inside the reaction tower, a rotating ring is rotatably connected to the middle part of the surface of the transport pipe, a connecting pipe is fixedly installed on the surface of the rotating ring, a connecting plate is fixedly installed on the other end of the connecting pipe, a porous carrier is fixedly installed on the other end of the connecting plate, a feed pipe is fixedly connected to the top of the front and rear ends of the transport pipe, a support rod is fixedly installed on the surface of the transport pipe, and an arc-shaped baffle is fixedly installed on the top of the support rod.

[0007] Preferably, a through hole is provided on the surface of the middle portion of the transport pipe, and the interiors of the transport pipe, the rotating ring, the connecting pipe and the connecting plate are connected. The end of the connecting plate away from the connecting pipe is connected to the porous carrier, and the limestone slurry can be introduced into the interior of the transport pipe through the feed pipe and then sprayed out through the porous carrier.

[0008] Preferably, the feed pipe is connected to the transport pipe, and the top end of the feed pipe passes through the reaction tower and extends to the top of the reaction tower.

[0009] Preferably, there are two support rods symmetrically arranged on the front and rear sides of the rotating ring on the surface of the transport pipe, and the arc baffle is located above the rotating ring. The slurry sprayed upward will spray to the bottom of the arc baffle, and then slowly drip downward at the bottom of the arc baffle.

[0010] Preferably, the cleaning assembly includes a support rod fixedly installed inside the reaction tower, a guide rail is fixedly installed on the surface of the support rod, a rodless cylinder is fixedly installed inside the guide rail, a connecting block is provided on the surface of the rodless cylinder, and an annular cleaning block is fixedly installed at the front end of the connecting block.

[0011] Preferably, the connecting block is fixedly connected to the piston surface of the rodless cylinder, and the annular cleaning block is slidably connected to the inner wall of the reaction tower. The rodless cylinder will drive the annular cleaning block to move reciprocatingly up and down, and at this time the annular cleaning block will remove the calcium sulfate particles that may adhere to the inner wall of the reaction tower.

[0012] The utility model is beneficial in that:

[0013] When the utility model sprays sulfur dioxide-containing gas into the interior of the reaction tower through the air inlet pipe, the flowing gas at this time will drive the connecting plate to rotate, and at the same time, limestone slurry is injected into the interior of the transport pipe through the feed pipe. At this time, the rotating sprayed slurry and the sprayed gas are fully mixed, thereby improving the desulfurization efficiency;

[0014] During the desulfurization process, the annular cleaning block slides back and forth up and down on the inner wall of the reaction tower. At this time, the annular cleaning block removes the calcium sulfate particles adhered to the inner wall of the reaction tower, thereby reducing the formation of scale and ensuring the normal operation of the desulfurization system. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] 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 or the description of the prior art 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.

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 It is a cross-sectional structural schematic diagram of the utility model;

[0018] Figure 3 For the utility model Figure 2 The enlarged structural diagram at A in the middle;

[0019] Figure 4 It is a schematic diagram of the structure of the rotating ring surface of the utility model;

[0020] Figure 5 It is a structural schematic diagram of the cleaning component of the utility model.

[0021] In the figure: 1. reaction tower; 2. air inlet pipe; 3. slurry spraying assembly; 31. transport pipe; 32. rotating ring; 33. connecting pipe; 34. connecting plate; 35. porous carrier; 36. feed pipe; 37. support rod; 38. arc baffle; 4. cleaning assembly; 41. support rod; 42. guide rail; 43. rodless cylinder; 44. connecting block; 45. annular cleaning block; 5. outlet pipe; 6. discharge pipe. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] The following is combined with Figure 1 —5 further details of this application,

[0024] The present application discloses a desulfurization device for recycling and reusing calcined ash dust waste. Figure 1 and Figure 2The desulfurization device for recycling and reusing calcined white dust removal powder waste comprises a reaction tower 1, an air inlet pipe 2 is fixedly connected to the top of the left side of the reaction tower 1, a slurry spraying assembly 3 is arranged on the top of the inside of the reaction tower 1, a cleaning assembly 4 is arranged inside the reaction tower 1, an air outlet pipe 5 is fixedly connected to the top of the right side of the reaction tower 1, and a discharge pipe 6 is fixedly connected to the bottom of the right side of the reaction tower 1;

[0025] Reference Figure 2 - Figure 4 The slurry spraying assembly 3 includes a transport pipe 31 fixedly installed inside the reaction tower 1, a rotating ring 32 is rotatably connected to the middle of the surface of the transport pipe 31, a connecting pipe 33 is fixedly installed on the surface of the rotating ring 32, a connecting plate 34 is fixedly installed on the other end of the connecting pipe 33, and a porous carrier 35 is fixedly installed on the other end of the connecting plate 34. A feed pipe 36 is fixedly connected to the top of both the front and rear ends of the transport pipe 31, a through hole is opened on the surface of the middle part of the transport pipe 31, and the interiors of the transport pipe 31, the rotating ring 32, the connecting pipe 33 and the connecting plate 34 are connected, and the end of the connecting plate 34 away from the connecting pipe 33 is connected to the porous carrier 35 The limestone slurry can be passed into the interior of the transport pipe 31 through the feed pipe 36 and then sprayed out through the porous carrier 35. The feed pipe 36 is connected to the transport pipe 31. The top of the feed pipe 36 passes through the reaction tower 1 and extends to the top of the reaction tower 1. A support rod 37 is fixedly installed on the surface of the transport pipe 31. An arc-shaped baffle 38 is fixedly installed on the top of the support rod 37. There are two support rods 37 and they are symmetrically arranged on the front and rear sides of the rotating ring 32 on the surface of the transport pipe 31. The arc-shaped baffle 38 is located above the rotating ring 32. The slurry sprayed upward will spray to the bottom of the arc-shaped baffle 38, and then slowly drip downward at the bottom of the arc-shaped baffle 38.

[0026] Reference Figure 2 and Figure 5 The cleaning assembly 4 includes a support rod 41 fixedly installed inside the reaction tower 1, a guide rail 42 fixedly installed on the surface of the support rod 41, a rodless cylinder 43 fixedly installed inside the guide rail 42, a connecting block 44 is provided on the surface of the rodless cylinder 43, an annular cleaning block 45 is fixedly installed at the front end of the connecting block 44, the connecting block 44 is fixedly connected to the piston surface of the rodless cylinder 43, the annular cleaning block 45 is slidably connected to the inner wall of the reaction tower 1, the rodless cylinder 43 will drive the annular cleaning block 45 to move back and forth up and down, at this time the annular cleaning block 45 will remove the calcium sulfate particles that may adhere to the inner wall of the reaction tower 1.

[0027] Working principle: The operator crushes the calcium oxide, then adds water to the calcium oxide powder to form a slurry, and then connects the various pipes on the surface of the reaction tower 1 to the corresponding equipment, and then passes the flue gas containing sulfur dioxide into the interior of the reaction tower 1 through the air inlet pipe 2. At this time, the slurry is pumped into the interior of the feed pipe 36 through the pump body. At this time, the slurry passes into the interior of the transport pipe 31 in the feed pipe 36. The slurry flows in the interior of the transport pipe 31 and flows to the rotating ring 32 through the through hole. Then, the slurry will pass through the rotating ring 32, the connecting pipe 33 and the connecting plate 34 in turn, and then spray out through the connecting plate 34, and the sprayed slurry will spray out through the holes on the surface of the porous carrier 35. At this time, the slurry is sprayed to the outside when it diffuses. At the same time, the flue gas sprayed into the interior of the reaction tower 1 through the air inlet pipe 2 will push the connecting plate 34. At this time, the connecting plate 34 is pushed and drives the rotating ring 32 to rotate on the surface of the transport pipe 31. At this time, the gas sprayed through the porous carrier 35 will fully mix and react with the flue gas entering the interior of the reaction tower 1, thereby accelerating the vulcanization process;

[0028] At the same time, the operator can drive the rodless cylinder 43 through the control system, so that the rodless cylinder 43 drives the connecting block 44 to move back and forth up and down. At this time, the connecting block 44 will drive the annular cleaning block 45 to move back and forth up and down in the vertical direction. At this time, the annular cleaning block 45 slides on the inner wall of the reaction tower 1. At this time, the annular cleaning block 45 removes the slurry and calcium sulfate particles adhered to the inside of the reaction tower 1, thereby ensuring the normal operation of the desulfurization system.

[0029] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A desulfurization device for recycling and reusing calcined dust waste, characterized by: The invention comprises a reaction tower (1), wherein the top of the left side of the reaction tower (1) is fixedly connected to an air inlet pipe (2), the top of the interior of the reaction tower (1) is provided with a slurry spraying assembly (3), the interior of the reaction tower (1) is provided with a cleaning assembly (4), the top of the right side of the reaction tower (1) is fixedly connected to an air outlet pipe (5), and the bottom of the right side of the reaction tower (1) is fixedly connected to a discharge pipe (6); The slurry spraying assembly (3) comprises a transport pipe (31) fixedly mounted inside the reaction tower (1); a rotating ring (32) is rotatably connected to the middle of the surface of the transport pipe (31); a connecting pipe (33) is fixedly mounted on the surface of the rotating ring (32); a connecting plate (34) is fixedly mounted on the other end of the connecting pipe (33); a porous carrier (35) is fixedly mounted on the other end of the connecting plate (34); a feed pipe (36) is fixedly connected to the top of both front and rear ends of the transport pipe (31); a support rod (37) is fixedly mounted on the surface of the transport pipe (31); and an arc-shaped baffle (38) is fixedly mounted on the top of the support rod (37).

2. The desulfurization device for recycling and reusing calcined dust waste according to claim 1 is characterized in that: A through hole is provided on the surface of the middle part of the transport pipe (31); the interiors of the transport pipe (31), the rotating ring (32), the connecting pipe (33) and the connecting plate (34) are connected; and one end of the connecting plate (34) away from the connecting pipe (33) is connected to the porous carrier (35).

3. The desulfurization device for recycling and reusing calcined dust waste according to claim 1 is characterized in that: The feed pipe (36) is connected to the transport pipe (31), and the top end of the feed pipe (36) penetrates the reaction tower (1) and extends to the top of the reaction tower (1).

4. The desulfurization device for recycling and reusing calcined dust waste according to claim 1 is characterized in that: There are two support rods (37) which are symmetrically arranged on the front and rear sides of the rotating ring (32) on the surface of the transport tube (31), and the arc-shaped baffle (38) is located above the rotating ring (32).

5. The desulfurization device for recycling and reusing calcined dust waste according to claim 1 is characterized in that: The cleaning assembly (4) comprises a support rod (41) fixedly mounted inside the reaction tower (1); a guide rail (42) is fixedly mounted on the surface of the support rod (41); a rodless cylinder (43) is fixedly mounted inside the guide rail (42); a connecting block (44) is provided on the surface of the rodless cylinder (43); and an annular cleaning block (45) is fixedly mounted at the front end of the connecting block (44).

6. The desulfurization device for recycling and reusing calcined ash dust waste according to claim 5 is characterized in that: The connecting block (44) is fixedly connected to the piston surface of the rodless cylinder (43), and the annular cleaning block (45) is slidably connected to the inner wall of the reaction tower (1).

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