Sodium-based dry desulfurization efficient vertical reactor

Abstract

The utility model relates to the technical field of environmental protection equipment, in particular to a sodium-based dry desulfurization efficient vertical reactor, which comprises an outer cylinder, an inner cylinder, an inner sealing plate and a cyclone, the outer cylinder and the inner cylinder are sleeved, the cyclone comprises an outer ring wall plate, an outer ring blade, an inner ring wall plate, an inner ring blade and a connecting pipe, and the outer ring blade and the inner ring blade are opposite in deviation. Flue gas flowing through the outer ring and the inner ring of the swirler moves in the clockwise direction, desulfurizing agents at the interface collide with each other in the opposite directions, large-particle desulfurizing agents are impacted and differentiated into small-particle desulfurizing agents, the total surface area of the desulfurizing agents is increased, the utilization rate of the desulfurizing agents can be increased, and through rotational flow of the swirler, the desulfurization effect is improved. Flue gas and materials can be fully mixed, local material accumulation can be avoided, the problem of incomplete reaction is completely eradicated, and therefore the desulfurization efficiency is improved. And a synergistic ring is also arranged, so that part of the desulfurizing agent is prevented from escaping from the edge, and the reaction rate of the desulfurizing agent is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental protection equipment, in particular to a sodium-based dry desulfurization high-efficiency vertical reactor. Background Art

[0002] Dry desulfurization, also known as dry flue gas desulfurization, refers to the use of powdered or granular absorbents, adsorbents or catalysts to remove sulfide-containing gases from flue gas. The original flue gas directly enters the SDS reactor. The desulfurizer sodium bicarbonate (baking soda) is first graded and ground into ultrafine powder, and then transported to the SDS reactor via the dilute phase. The ultrafine sodium bicarbonate powder is activated at high temperature to decompose highly active Na2CO3 and CO2. The highly active Na2CO3 fully contacts SO2 and other acidic media in the flue gas in the flue to react chemically to generate a mixture of Na2SO4 and Na2SO3. After the reaction, the desulfurization powdery granular products enter the bag dust collector with the airflow for removal, and are discharged from the lower part of the dust collector, and the by-products are stored centrally.

[0003] In the prior art, the desulfurizer may absorb water vapor in the air during storage and transportation, resulting in agglomeration problems. When the desulfurizer is transported to the desulfurization tower, the desulfurizer originally with a fineness of 200 mesh will be smaller than 20 mesh, or even form a mass. Although the high-temperature flue gas will dry the moisture on the surface of the particles, its block structure is maintained, which greatly reduces the total surface area of ​​contact between the desulfurizer and the flue gas, resulting in incomplete reaction of the desulfurizer, reduced desulfurization efficiency, and waste of part of the desulfurizer. Utility Model Content

[0004] The utility model solves the problem that a sodium-based dry desulfurization high-efficiency vertical reactor is provided to solve the problem of incomplete reaction of desulfurizer in the prior art.

[0005] The utility model is realized through the following technical scheme: a sodium-based dry desulfurization high-efficiency vertical reactor comprises: an outer cylinder, an inner cylinder, an inner sealing plate and a cyclone.

[0006] The straight cylinder has a skirt at the bottom, which is installed on a bracket or a civil engineering foundation, a closed top, and a smoke outlet at the side of the outer cylinder.

[0007] The inner tube is sleeved in the middle of the outer tube, with a flue gas inlet at the lower end and an opening at the upper end, and a venturi section is arranged in the middle of the inner tube. Flue gas enters the reactor from the flue gas inlet, passes through the middle of the inner tube, reaches the top position, turns back and goes down between the inner tube and the outer tube, and finally flows out of the reactor from the flue gas outlet, providing a channel for the desulfurizer to react for a longer time.

[0008] The inner sealing plate is arranged between the outer cylinder and the inner cylinder, arranged obliquely, and located below the flue gas outlet for sealing at the flue gas outlet. The inclined lower side is close to the flue gas outlet, so that even if there is settled desulfurizer, it can be carried to the downstream dust collector by the flue gas at the flue gas outlet.

[0009] The cyclone is arranged in the inner cylinder, and comprises an outer ring wall plate, outer ring blades, an inner ring wall plate, inner ring blades, and a connecting pipe. The outer ring blades are provided with a plurality of pieces, which are evenly distributed between the inner cylinder and the inner ring wall plate. The inner ring blades are provided with a plurality of pieces, which are evenly distributed between the connecting pipe and the inner ring wall plate. The outer ring blades and the inner ring blades have opposite deflections. The desulfurizer is generally sprayed into the system in horizontal flue gas, and then enters the inner cylinder, undergoes the contraction and expansion of the Venturi, and undergoes preliminary gas-solid mixing, and then passes through the cyclone. The flue gas flowing through the outer blades of the cyclone produces a counterclockwise movement, and the flue gas flowing through the outer and inner circles of the cyclone produces a clockwise movement. The desulfurizers at the interface will collide with each other in opposite directions, causing large particles of desulfurizer to crash and break into small particles, thereby increasing the total surface area of ​​the desulfurizer and improving the utilization rate of the desulfurizer. In addition, the swirl of the cyclone can achieve full mixing of the flue gas and the material, avoid local material agglomeration, and eliminate the problem of incomplete reaction, thereby improving the desulfurization efficiency.

[0010] Furthermore, the cyclones are provided with two sets, with a spacing of ≥4m, arranged up and down, so as to achieve full mixing of the desulfurizer and the material.

[0011] Furthermore, the cyclone is made of wear-resistant material or coated with a wear-resistant coating, so as to improve the wear resistance of the cyclone and increase the service life.

[0012] Furthermore, the inner cylinder above the cyclone is also provided with an enhancement ring. The cross-section of the enhancement ring is triangular, and the radial height is 100mm-200mm. The enhancement ring is installed on the side wall of the inner cylinder. The shrinkage of the enhancement ring has an effect of accelerating the flue gas flowing through. We know that the flue gas flow rate is generally the fastest in the middle of the inner cylinder, and the flue gas flow rate is the slowest near the wall panel. When the flow rate is less than a certain speed, the desulfurizer will slide along the wall panel. After adding the enhancement ring, the desulfurizer will first fall on the enhancement ring, and then slide down to the edge of the enhancement ring, and then be brought up again by the accelerated flue gas for reaction, avoiding the problem of part of the desulfurizer escaping from the edge.

[0013] Furthermore, two sets of enhancement rings are provided. In order to control the optimal distance, the distance between the enhancement rings is ≥1.5m, and the distance between the enhancement rings and the cyclone is ≥1m.

[0014] The beneficial effects of the utility model are:

[0015] 1. The utility model is provided with a cyclone, and the outer ring blades and the inner ring blades are biased in opposite directions. The flue gas flowing through the outer ring and the inner ring of the cyclone produces a clockwise movement, and the desulfurizer at the interface will collide with each other in opposite directions, causing large particles of the desulfurizer to be crushed and differentiated into small particles of the desulfurizer, thereby increasing the total surface area of ​​the desulfurizer and improving the utilization rate of the desulfurizer. In addition, the swirl of the cyclone can achieve full mixing of the flue gas and the material, avoid local material agglomeration, and eliminate the problem of incomplete reaction, thereby improving the desulfurization efficiency.

[0016] 2. The utility model is also provided with a synergist ring, the cross section of which is a triangle. When the flue gas flow rate is less than a certain speed, the desulfurizer will slide along the wall panel. After adding the synergist ring, the desulfurizer will first fall on the synergist ring, then slide down to the edge of the synergist ring, and then be brought up again by the accelerated flue gas to react, thus avoiding the problem of part of the desulfurizer escaping from the edge. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a sodium-based dry desulfurization high-efficiency vertical reactor according to Example 1;

[0018] Figure 2 It is a structural schematic diagram of a sodium-based dry desulfurization high-efficiency vertical reactor according to Example 1;

[0019] Figure 3 It is a structural schematic diagram of a sodium-based dry desulfurization high-efficiency vertical reactor according to Example 1;

[0020] Figure 4 It is a structural schematic diagram of a sodium-based dry desulfurization high-efficiency vertical reactor according to Example 1;

[0021] Figure 5 for Figure 4 The local enlarged view of point I in the middle;

[0022] Figure 6 It is a schematic diagram of the structure of the cyclone;

[0023] Figure 7 Schematic diagram of the structure of the enhancement ring.

[0024] In the figure:

[0025] 100 outer cylinder; 101 smoke outlet;

[0026] 200 inner cylinder; 201 flue gas inlet; 202 venturi section;

[0027] 300 inner sealing plate;

[0028] 400 cyclone; 401 outer ring blades; 402 inner ring wall plate; 403 inner ring blades; 404 connecting pipe; 405 outer ring wall plate; 500 enhancement ring. DETAILED DESCRIPTION

[0029] 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.

[0030] Embodiment 1, as Figure 1 As shown, a sodium-based dry desulfurization high-efficiency vertical reactor includes: an outer cylinder 100, an inner cylinder 200, an inner sealing plate 300, and a cyclone 400.

[0031] The bottom of the straight cylinder is provided with a skirt seat, which is installed on a bracket or a civil foundation, and the top is closed. The smoke outlet 101 is arranged on the side of the outer cylinder 100.

[0032] The inner cylinder 200 is sleeved in the middle of the outer cylinder 100, with a flue gas inlet 201 at the lower end and an opening at the upper end, and a venturi section 202 is arranged in the middle of the inner cylinder 200. Flue gas enters the reactor from the flue gas inlet 201, passes through the middle of the inner cylinder 200, reaches the top position, turns back and goes downward between the inner cylinder 200 and the outer cylinder 100, and finally flows out of the reactor from the flue gas outlet 101, providing a channel with a longer reaction time for the desulfurizer.

[0033] The inner sealing plate 300 is arranged between the outer cylinder 100 and the inner cylinder 200, arranged at an angle, and located below the flue gas outlet 101. It is used for sealing at the flue gas outlet 101, and the inclined lower side is close to the flue gas outlet 101. In this way, even if there is settled desulfurizer, it can be carried to the downstream dust collector by the flue gas at the flue gas outlet 101.

[0034] The cyclone 400 is provided in one piece and is disposed in the inner cylinder 200. Figure 6As shown, the cyclone 400 includes an outer ring wall plate 405, outer ring blades 401, an inner ring wall plate 402, inner ring blades 403, and a connecting pipe 404. The outer ring blades 401 are provided in multiple pieces and are evenly distributed between the inner cylinder 200 and the inner ring wall plate 402. The inner ring blades 403 are provided in multiple pieces and are evenly distributed between the connecting pipe 404 and the inner ring wall plate 402. The outer ring blades 401 and the inner ring blades 403 have opposite deflections. The cyclone 400 is made of wear-resistant material or coated with a wear-resistant coating to improve the wear resistance of the cyclone 400 and increase its service life. The desulfurizer is generally sprayed into the system in horizontal flue gas, and then enters the inner cylinder 200, undergoes the contraction and expansion of the Venturi, performs preliminary gas-solid mixing, and then passes through the cyclone 400. The flue gas flowing through the outer blades 401 of the cyclone 400 moves in a counterclockwise direction, and the flue gas flowing through the outer and inner circles of the cyclone 400 moves in a clockwise direction. The desulfurizers at the interface will collide with each other in opposite directions, causing large particles of the desulfurizer to be crushed and differentiated into small particles of the desulfurizer, thereby increasing the total surface area of ​​the desulfurizer and improving the utilization rate of the desulfurizer. In addition, the swirl of the cyclone 400 can achieve full mixing of the flue gas and the material, avoid local material agglomeration, and eliminate the problem of incomplete reaction, thereby improving the desulfurization efficiency.

[0035] Embodiment 2, as Figure 2 As shown, the difference from the first embodiment is that the inner cylinder 200 above the cyclone 400 is further provided with an enhancement ring 500. Figure 7 As shown, the cross section of the enhancement ring 500 is triangular, and the radial height is 100mm-200mm. The enhancement ring 500 is installed on the side wall of the inner tube 200. The constriction of the enhancement ring 500 has an accelerating effect on the flue gas flowing through. We know that the flue gas flow rate is generally the fastest in the middle of the inner tube 200, and the flue gas flow rate is the slowest near the wall panel. When the flow rate is less than a certain speed, the desulfurizer will slide along the wall panel. After adding the enhancement ring 500, the desulfurizer will first fall on the enhancement ring 500, and then slide down to the edge of the enhancement ring 500, and then be brought up again by the accelerated flue gas for reaction, avoiding the problem of some desulfurizers escaping from the edge.

[0036] Embodiment three, as Figure 3 As shown, the difference from the second embodiment is that, further, two sets of enhancement rings 500 are provided. In order to control the optimal distance, the distance between the enhancement rings 500 is ≥1.5m, and the distance between the enhancement rings 500 and the cyclone 400 is ≥1m.

[0037] Embodiment 4, as Figure 4 As shown, the difference from the third embodiment is that: the cyclone 400 is provided with two sets, the interval is ≥ 4m, arranged up and down, which can achieve full mixing of the desulfurizer and the material. Figure 5 for Figure 4A partial enlarged view, from bottom to top, the cyclone-enhancing ring-cyclone-enhancing ring are arranged in sequence, which can further improve the desulfurization efficiency.

[0038] In summary, the sodium-based dry desulfurization high-efficiency vertical reactor described in the utility model can improve the reaction rate of the desulfurizer and improve the desulfurization efficiency.

[0039] The above shows and describes the basic principles, main features and advantages of the utility model. The technicians in this industry should understand that the above implementation is only to illustrate the technical concept and characteristics of the utility model, and its purpose is to enable people familiar with this technology to understand the content of the utility model and implement it, and it cannot be used to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A sodium-based dry desulfurization high-efficiency vertical reactor, characterized in that: include: The outer cylinder (100) is in a straight cylinder shape, has a skirt seat at the bottom, is installed on a bracket or a civil foundation, has a closed top, and has a smoke outlet (101) arranged on the side of the outer cylinder (100). The inner cylinder (200) is sleeved in the middle of the outer cylinder (100), has a smoke inlet (201) at the lower end, and an opening at the upper end. A Venturi section (202) is provided in the middle of the inner cylinder (200). The inner sealing plate (300) is disposed between the outer cylinder (100) and the inner cylinder (200), arranged obliquely, and located below the smoke outlet (101). The cyclone (400) is arranged in the inner cylinder (200), and comprises an outer ring wall plate (405), outer ring blades (401), an inner ring wall plate (402), inner ring blades (403), and a connecting pipe (404); the outer ring blades (401) are provided in a plurality of pieces and are evenly distributed between the inner cylinder (200) and the inner ring wall plate (402); the inner ring blades (403) are provided in a plurality of pieces and are evenly distributed between the connecting pipe (404) and the inner ring wall plate (402); the outer ring blades (401) and the inner ring blades (403) have opposite deflections. The inner cylinder (200) above the cyclone (400) is further provided with a booster ring (500). The cross section of the enhancement ring (500) is triangular, and the radial height is 100 mm to 200 mm.

2. A sodium-based dry desulfurization high-efficiency vertical reactor according to claim 1, characterized in that: The cyclones (400) are provided in two sets, with a spacing of ≥4 m.

3. A sodium-based dry desulfurization high-efficiency vertical reactor according to claim 1, characterized in that: The cyclone (400) is made of wear-resistant material or coated with a wear-resistant coating.

4. A sodium-based dry desulfurization high-efficiency vertical reactor according to claim 1, characterized in that: The enhancement rings (500) are provided in two sets, the distance between the enhancement rings (500) is ≥1.5 m, and the distance between the enhancement rings (500) and the cyclone (400) is ≥1 m.

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