Dry desulfurization reactor

Abstract

The utility model relates to the technical field of dry desulfurization, and provides a dry desulfurization reactor which is characterized in that a first desulfurizing agent conveying pipe and a second desulfurizing agent conveying pipe are symmetrically arranged on two sides of a Venturi tube and are respectively communicated with a throat pipe section of the Venturi tube; the first spray gun, the second spray gun, the third spray gun and the fourth spray gun are respectively arranged in the Venturi tube, the first desulfurizing agent conveying pipe is respectively connected with the first spray gun and the second spray gun, and the second desulfurizing agent conveying pipe is respectively connected with the third spray gun and the fourth spray gun; the first spray gun and the third spray gun are used for spraying a desulfurizing agent in the direction perpendicular to the axis of the Venturi tube, and the second spray gun and the fourth spray gun are used for spraying the desulfurizing agent in the direction parallel to the axis of the Venturi tube. The first desulfurizing agent conveying pipe and the second desulfurizing agent conveying pipe are used for conveying a desulfurizing agent into the venturi pipe. The four spray guns respectively spray the tube wall and the tube center of the Venturi tube, so that the desulfurizing agent is uniformly sprayed at the waiting tube section of the Venturi tube, and the dry desulfurization reaction efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to dry desulfurization technical field, and particularly to a dry desulfurization reactor. BACKGROUND

[0002] The dry desulfurization mode is to spray the reactant (such as ground baking soda or finished product high specific surface calcium hydroxide) into the flue reactor or vertical reactor to react with sulfur dioxide in the flue gas, thereby removing sulfur dioxide, and the desulfurization byproduct is collected by the subsequent bag-type dust collector, the reaction process does not produce waste water, and the process is simple and reliable.

[0003] In the prior art, a spray gun is usually arranged horizontally in the reactor (for example, a Venturi tube) to perform dry desulfurization, but the spraying amount per unit time is limited, and the spraying surface is relatively concentrated, which easily causes the desulfurizer to accumulate in the flue gas pipeline, resulting in low dry desulfurization efficiency. In order to improve the dry desulfurization efficiency, multiple spray guns are arranged in the reactor to spray the reactant at the same time, but the multiple spray guns are usually arranged oppositely, which causes the desulfurizer spraying positions to overlap, resulting in blockage of the spray gun mouth and uneven spraying of the reactant in the reactor. SUMMARY

[0004] The utility model solves the problem of how to uniformly spray the dry desulfurization reactant.

[0005] To solve the above problems, the utility model provides a dry desulfurization reactor, which comprises a Venturi tube, a first desulfurizer conveying pipe, a second desulfurizer conveying pipe, a first spray gun, a second spray gun, a third spray gun and a fourth spray gun.

[0006] The first desulfurizer conveying pipe and the second desulfurizer conveying pipe are symmetrically arranged on the two sides of the Venturi tube, and the first desulfurizer conveying pipe and the second desulfurizer conveying pipe are respectively communicated with the throat pipe section of the Venturi tube.

[0007] The first spray gun, the second spray gun, the third spray gun and the fourth spray gun are respectively arranged in the Venturi tube, the first desulfurizer conveying pipe is connected with the first spray gun and the second spray gun, the second desulfurizer conveying pipe is connected with the third spray gun and the fourth spray gun, and the spraying openings of the first spray gun and the third spray gun are arranged non-coaxially.

[0008] The first spray gun and the third spray gun are used for spraying the desulfurizer in the direction perpendicular to the axis of the Venturi tube, and the second spray gun and the fourth spray gun are used for spraying the desulfurizer in the direction parallel to the axis of the Venturi tube.

[0009] Optionally, the first desulfurizer delivery pipe comprises a first main pipe, a first tee pipe, a first branch pipe and a second branch pipe, the first main pipe, the first branch pipe and the second branch pipe are connected with the first tee pipe respectively, the first branch pipe and the second branch pipe are communicated with the throat pipe section of the Venturi tube respectively, the first branch pipe is connected with the first lance, and the second branch pipe is connected with the second lance.

[0010] Optionally, the second desulfurizer delivery pipe comprises a second main pipe, a second tee pipe, a third branch pipe and a fourth branch pipe, the second main pipe, the third branch pipe and the fourth branch pipe are connected with the second tee pipe respectively, the third branch pipe and the fourth branch pipe are communicated with the throat pipe section of the Venturi tube respectively, the third branch pipe is connected with the third lance, and the fourth branch pipe is connected with the fourth lance.

[0011] Optionally, the second lance comprises a lance body, an elbow pipe and a nozzle, the lance body is internally provided with a channel for delivering desulfurizer, one end of the elbow pipe is connected with the lance body, and the other end is connected with the nozzle, so that the central axis of the nozzle is parallel to the axial direction of the Venturi tube.

[0012] The fourth lance has the same structure as the second lance, and the nozzles of the fourth lance and the second lance are oriented in the same direction.

[0013] Optionally, the central axis of the nozzle coincides with the central axis of the throat pipe section of the Venturi tube.

[0014] Optionally, the first lance, the second lance, the third lance and the fourth lance are all located on the central horizontal plane of the throat pipe section of the Venturi tube.

[0015] Optionally, the dry desulfurization reactor further comprises a third desulfurizer delivery pipe, a fifth lance and a sixth lance.

[0016] The third desulfurizer delivery pipe is arranged above the throat pipe section of the Venturi tube, and the third desulfurizer delivery pipe is communicated with the throat pipe section of the Venturi tube.

[0017] The fifth lance and the sixth lance are arranged in the Venturi tube respectively, the third desulfurizer delivery pipe is connected with the fifth lance and the sixth lance respectively, and the fifth lance and the sixth lance are both located above the central horizontal plane.

[0018] Optionally, the third desulfurizer delivery pipe comprises a third main pipe, a third three-way pipe, a fifth branch pipe and a sixth branch pipe, the third main pipe, the fifth branch pipe and the sixth branch pipe are connected with the third three-way pipe respectively, the fifth branch pipe and the sixth branch pipe are communicated with the throat pipe section of the Venturi tube respectively, the fifth branch pipe is connected with the fifth spray gun, and the sixth branch pipe is connected with the sixth spray gun.

[0019] Optionally, the dry desulfurization reactor further comprises a support for supporting the Venturi tube.

[0020] Optionally, the support comprises a first support body and a second support body, the second support body is arranged at the upper end of the first support body, and an end face of the second support body in contact with the Venturi tube is adapted to the shape of the Venturi tube.

[0021] The dry desulfurization reactor has the following beneficial effects: the first desulfurizer delivery pipe and the second desulfurizer delivery pipe are symmetrically arranged at the two sides of the throat pipe section of the Venturi tube and communicated with the throat pipe section, and the desulfurizer is delivered into the Venturi tube in the process of dry desulfurization. The first spray gun, the second spray gun, the third spray gun and the fourth spray gun are arranged in the Venturi tube respectively, the first desulfurizer delivery pipe is connected with the first spray gun and the second spray gun respectively, the second desulfurizer delivery pipe is connected with the third spray gun and the fourth spray gun respectively, and the delivered desulfurizer is sprayed. The first spray gun and the third spray gun are used for spraying the desulfurizer in the direction perpendicular to the axis of the Venturi tube, the spray ports of the first spray gun and the third spray gun are arranged non-coaxially, the solid product generated in the spraying of the desulfurizer or after the flue gas desulfurization is prevented from entering the corresponding spray nozzle to cause blockage, the normal operation of the first spray gun and the third spray gun is ensured, the second spray gun and the fourth spray gun are used for spraying the desulfurizer in the direction parallel to the axis of the Venturi tube, the first spray gun, the second spray gun, the third spray gun and the fourth spray gun spray the pipe wall and the pipe center of the Venturi tube respectively, the desulfurizer is sprayed in multiple directions, the spray gun is prevented from being blocked, the desulfurizer is uniformly sprayed in the throat pipe section of the Venturi tube, and the flue gas dry desulfurization reaction efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a front view structural schematic diagram of the dry desulfurization reactor of the utility model embodiment;

[0023] Figure 2 It is a front view structural schematic diagram of the dry desulfurization reactor of the utility model embodiment; Figure 1 It is a middle A-A sectional view;

[0024] Figure 3 It is a left side view structural schematic diagram of the dry desulfurization reactor of the utility model embodiment;

[0025] Figure 4 It is a top view structural schematic diagram of the dry desulfurization reactor of the utility model embodiment;

[0026] Figure 5 It is right side view structural diagram of dry desulfurization reactor of the embodiment of the utility model.

[0027] Mark explanation:

[0028] 1-venturi tube;

[0029] 2-first desulfurizer delivery pipe;21-first main pipe;22-first tee;23-first branch pipe;24-second branch pipe;

[0030] 3-second desulfurizer delivery pipe;31-second main pipe;32-second tee;33-third branch pipe;34-fourth branch pipe;

[0031] 4-third desulfurizer delivery pipe;41-third main pipe;42-third tee;43-fifth branch pipe;44-sixth branch pipe;

[0032] 5-first lance;

[0033] 6-second lance;61-lance main body;62-elliptical pipe;63-nozzle;

[0034] 7-third lance;

[0035] 8 fourth lance;

[0036] 9-fifth lance;

[0037] 10-sixth lance;

[0038] 11-support;111-first frame body;112-second frame body. Specific embodiments

[0039] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the specific embodiments of the utility model are described in detail below with reference to the drawings. Although some embodiments of the utility model are shown in the drawings, it should be understood that the utility model can be realized in various forms, and should not be interpreted as being limited to the embodiments described herein, on the contrary, these embodiments are provided to more thoroughly and completely understand the utility model. It should be understood that the drawings and embodiments of the utility model are only for illustrative purposes, and are not used to limit the protection scope of the utility model.

[0040] The Z-axis in the drawings represents the vertical direction, that is, the up-down position, and the positive direction of the Z-axis represents the upward direction, and the negative direction of the Z-axis represents the downward direction; the X-axis in the drawings represents the horizontal direction and is designated as the front-rear position, and the positive direction of the X-axis represents the front side, and the negative direction of the X-axis represents the rear side; and the Y-axis in the drawings represents the left-right position, and the positive direction of the Y-axis represents the left side, and the negative direction of the Y-axis represents the right side. It should be noted that the meanings of the aforementioned Z-axis, Y-axis and X-axis are only for the convenience of describing the present application and simplifying the description, and are not indicative or suggestive of the devices or elements referred to having to have a specific orientation, being constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application.

[0041] The term "comprising" and variations thereof as used herein are open-ended, that is "including, but not limited to"; the term "based on" is, at least based on part on; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". Related definitions are given throughout the description. It should be noted that the terms "first", "second", and the like in the present application are only used to distinguish different devices, modules or units, and are not intended to limit the functions of these devices, modules or units, or the order or interdependence of these devices, modules or units.

[0042] It should be noted that the modification of "one" or "multiple" in the present application is illustrative and not restrictive, and those skilled in the art should understand that, unless otherwise explicitly indicated in the context, it should be understood as "one or more".

[0043] As shown in Figures 1 to 4 To solve the problems in the prior art, the present embodiment provides a dry desulfurization reactor, which comprises a Venturi tube 1, a first desulfurizer conveying pipe 2, a second desulfurizer conveying pipe 3, a first spray gun 5, a second spray gun 6, a third spray gun 7 and a fourth spray gun 8.

[0044] The first desulfurizer conveying pipe 2 and the second desulfurizer conveying pipe 3 are symmetrically arranged on both sides of the Venturi tube 1, and the first desulfurizer conveying pipe 2 and the second desulfurizer conveying pipe 3 are respectively in communication with the throat section of the Venturi tube 1; it should be noted that the other end of the first desulfurizer conveying pipe 2 and the second desulfurizer conveying pipe 3 is in communication with a desulfurizer source, so as to convey the desulfurizer in the desulfurizer source into the Venturi tube 1 for dry desulfurization reaction. It should be noted that the first desulfurizer conveying pipe 2, the second desulfurizer conveying pipe 3 and the Venturi tube 1 are connected through flanges.

[0045] As shown in Figure 2As shown, the first lance 5, the second lance 6, the third lance 7 and the fourth lance 8 are arranged in the Venturi tube 1 respectively, the first desulfurizer conveying pipe 2 is connected with the first lance 5 and the second lance 6 respectively, the second desulfurizer conveying pipe 3 is connected with the third lance 7 and the fourth lance 8 respectively, the first lance 5 and the third lance 7 are straight-line type lances and the jet ports thereof are arranged non-coaxially; the first lance 5 and the third lance 7 are arranged towards a direction perpendicular to the axis of the Venturi tube 1, and the first lance 5 and the third lance 7 are used for spraying desulfurizer towards a direction perpendicular to the axis of the Venturi tube 1; the second lance 6 and the fourth lance 8 can change the jet direction thereof to be parallel to the axis of the Venturi tube 1 by arranging an elbow 62 at the jet port of each lance, and the second lance 6 and the fourth lance 8 are used for spraying desulfurizer towards a direction parallel to the axis of the Venturi tube 1; the second lance 6 and the fourth lance 8 spray respectively towards the wall and the center of the Venturi tube 1, so as to realize multi-directional spraying of desulfurizer, avoid plugging of the lances and make the desulfurizer sprayed uniformly in the throat section of the Venturi tube 1.

[0046] It should be noted that the first lance 5, the second lance 6, the third lance 7 and the fourth lance 8 blow the reactant into the flue or the reactor by high-pressure air or other medium. In order to ensure that the reactant can be fully dispersed, the interior of the lance is usually designed with a special structure, such as a cyclone device or an atomization device, so as to form fine particles or mist droplets.

[0047] Specifically, the dry desulfurization is a commonly used flue gas purification technology, which is used for removing sulfur dioxide in flue gas, such as Figure 1 As shown, the dry desulfurization is carried out by using a Venturi tube reactor, wherein the Venturi tube 1 comprises an inlet section with gradually decreasing pipe diameter, a throat section with small diameter and a diffusion section with gradually increasing pipe diameter; high-temperature flue gas enters the inlet section of the Venturi tube 1 through a pipeline and runs towards the diffusion section in the Venturi tube 1, and based on the Venturi effect, the flue gas flow velocity is greatly increased when the flue gas passes through the throat section. The first desulfurizer conveying pipe 2 and the second desulfurizer conveying pipe 3 convey desulfurizer such as limestone powder to the throat section of the Venturi tube 1, and the desulfurizer is sprayed into the throat section of the Venturi tube 1 by the first lance 5, the second lance 6, the third lance 7 and the fourth lance 8 arranged in the throat section of the Venturi tube 1, so as to mix the desulfurizer with the high-speed airflow, atomize the desulfurizer into fine particles, improve the gas-solid contact efficiency, and make the atomized desulfurizer react with sulfur dioxide in the flue gas to generate solid products such as calcium sulfate, and the purified flue gas is discharged through the diffusion section of the Venturi tube 1 and enters subsequent treatment equipment or is discharged into the atmosphere.

[0048] In the embodiment, the first desulfurizer conveying pipe 2 and the second desulfurizer conveying pipe 3 are symmetrically arranged at two sides of the throat pipe section of the Venturi pipe 1 and communicate with the throat pipe section, and the desulfurizer is conveyed into the Venturi pipe 1 in the process of dry desulfurization. The first lance 5, the second lance 6, the third lance 7 and the fourth lance 8 are respectively arranged in the Venturi pipe 1, the first desulfurizer conveying pipe 2 is connected with the first lance 5 and the second lance 6 respectively, the second desulfurizer conveying pipe 3 is connected with the third lance 7 and the fourth lance 8 respectively, and the conveyed desulfurizer is sprayed. The first lance 5 and the third lance 7 are used for spraying the desulfurizer in the direction perpendicular to the axis direction of the Venturi pipe 1, and the spraying ports of the first lance 5 and the third lance 7 are arranged non-coaxially to avoid the solid product generated in the spraying of the desulfurizer or after the flue gas desulfurization from entering the corresponding lance nozzle 63 to cause blockage, so as to ensure the normal operation of the first lance 5 and the third lance 7. The second lance 6 and the fourth lance 8 are used for spraying the desulfurizer in the direction parallel to the axis direction of the Venturi pipe 1, and the first lance 5, the second lance 6, the third lance 7 and the fourth lance 8 respectively spray the pipe wall and the pipe center of the Venturi pipe 1, so that the desulfurizer is uniformly sprayed in the throat pipe section of the Venturi pipe 1, and the flue gas dry desulfurization reaction efficiency is improved.

[0049] Optionally, the first desulfurizer conveying pipe 2 comprises a first main pipe 21, a first tee pipe 22, a first branch pipe 23 and a second branch pipe 24, the first main pipe 21, the first branch pipe 23 and the second branch pipe 24 are connected with the first tee pipe 22 respectively, the first branch pipe 23 and the second branch pipe 24 communicate with the throat pipe section of the Venturi pipe 1 respectively, the first branch pipe 23 is connected with the first lance 5, and the second branch pipe 24 is connected with the second lance 6.

[0050] Optionally, the second desulfurizer conveying pipe 3 comprises a second main pipe 31, a second tee pipe 32, a third branch pipe 33 and a fourth branch pipe 34, the second main pipe 31, the third branch pipe 33 and the fourth branch pipe 34 are connected with the second tee pipe 32 respectively, the third branch pipe 33 and the fourth branch pipe 34 communicate with the throat pipe section of the Venturi pipe 1 respectively, the third branch pipe 33 is connected with the third lance 7, and the fourth branch pipe 34 is connected with the fourth lance 8.

[0051] Specifically, as shown in Figure 3 one end of the first main pipe 21 is connected with a desulfurizer source, the other end of the first main pipe 21, the first branch pipe 23 and the second branch pipe 24 are connected with the first tee pipe 22 respectively, the first branch pipe 23 is connected with the first lance 5, and the second branch pipe 24 is connected with the second lance 6, so as to supply the desulfurizer to the first lance 5 and the second lance 6 respectively. The structure of the second desulfurizer conveying pipe 3 is the same as that of the first desulfurizer conveying pipe 2, and details are not described herein again. Figure 5

[0052] ​Optionally, the second spray gun 6 includes a spray gun body 61, a bend 62, and a nozzle 63. The spray gun body 61 has a channel inside for conveying desulfurizing agent. One end of the bend 62 is connected to the spray gun body 61, and the other end is connected to the nozzle 63, so that the central axis of the nozzle 63 is parallel to the axial direction of the venturi tube 1.

[0053] The fourth spray gun 8 has the same structure as the second spray gun 6, and the nozzles 63 of the fourth spray gun 8 and the second spray gun 6 face the same direction.

[0054] Specifically, such as Figure 2 As shown, conventional spray guns, such as the first spray gun 5 and the third spray gun 7, may only include the spray gun body 61. The fourth spray gun 8 and the second spray gun 6 are improved spray guns. In order to make the fourth spray gun 8 and the second spray gun 6 spray in a direction parallel to the axis of the Venturi tube 1, a bend 62 is provided at the spraying end of the spray gun body 61 of the second spray gun 6. The other end of the bend 62 is connected to a nozzle 63. By connecting the bend 62, the spraying direction of the spray gun body 61 is changed to be parallel to the axis of the Venturi tube 1. At the same time, the desulfurizing agent is sprayed in the center of the Venturi tube 1. Combined with the first spray gun 5 and the third spray gun 7 that spray the desulfurizing agent to the tube wall, the desulfurizing agent is sprayed more evenly in the Venturi tube 1. The fourth spray gun 8 and the second spray gun 6 have the same structure, and the nozzles 63 of the fourth spray gun 8 and the second spray gun 6 face the same direction to avoid relative or back-to-back spraying.

[0055] Alternatively, the nozzle 63 can be configured as an equilateral triangle with a horizontal projection at the spray end to allow the desulfurizing agent to be sprayed over a wide area.

[0056] Optionally, the central axis of the nozzle 63 coincides with the central axis of the throat segment of the venturi tube 1.

[0057] Specifically, in order to ensure that the desulfurizing agent sprayed by the second spray gun 6 and the fourth spray gun 8 is more evenly distributed in the venturi tube 1, the nozzle 63 is placed at the center of the throat section through the bend 62, that is, the central axis of the nozzle 63 coincides with the axis of the venturi tube 1.

[0058] Optionally, the first spray gun 5, the second spray gun 6, the third spray gun 7, and the fourth spray gun 8 are all located on the central horizontal plane of the throat section of the Venturi tube 1. The Venturi tube 1 is typically horizontally extended and mounted on a support, and the central horizontal plane of its throat section is the horizontal plane passing through its central axis. By placing all four spray guns on the central horizontal plane of the throat section, it is possible to avoid the solid products generated during the desulfurization reaction between the desulfurizing agent and flue gas falling into the spray guns and causing them to become clogged.

[0059] Optionally, the dry desulfurization reactor further includes a third desulfurizing agent delivery pipe 4, a fifth spray gun 9, and a sixth spray gun 10.

[0060] The third desulfurizer delivery pipe 4 is arranged above the throat section of the Venturi tube 1, and the third desulfurizer delivery pipe 4 is in communication with the throat section of the Venturi tube 1.

[0061] The fifth lance 9 and the sixth lance 10 are arranged in the Venturi tube 1 respectively, the third desulfurizer delivery pipe 4 is connected with the fifth lance 9 and the sixth lance 10 respectively, and the fifth lance 9 and the sixth lance 10 are both above the central horizontal plane.

[0062] Specifically, as shown in Figure 1 , the structure and function of the third desulfurizer delivery pipe 4 are the same as those of the first desulfurizer delivery pipe 2 and the second desulfurizer delivery pipe 3, and will not be repeated here. The fifth lance 9 and the sixth lance 10 are arranged obliquely in the throat section of the Venturi tube 1, that is, the extended lines of the fifth lance 9 and the sixth lance 10 pass through the center point of the Venturi tube 1, and the included angle between the extended lines and the vertical line a is 45°, further increasing the uniformity of desulfurizer injection in the Venturi tube 1. The vertical line a passes through the center point of the Venturi tube 1 and is perpendicular to the horizontal plane of the Venturi tube 1.

[0063] Optionally, the third desulfurizer delivery pipe 4 comprises a third main pipe 41, a third three-way pipe 42, a fifth branch pipe 43 and a sixth branch pipe 44, the third main pipe 41, the fifth branch pipe 43 and the sixth branch pipe 44 are connected with the third three-way pipe 42 respectively, the fifth branch pipe 43 and the sixth branch pipe 44 are in communication with the throat section of the Venturi tube 1 respectively, the fifth branch pipe 43 is connected with the fifth lance 9, and the sixth branch pipe 44 is connected with the sixth lance 10.

[0064] Specifically, as shown in Figure 4 , one end of the third main pipe 41 is connected with a desulfurizer source, the other end of the third main pipe 41, the third branch pipe 43 and the fifth branch pipe 44 are connected with the third three-way pipe 42 respectively, the fifth branch pipe 43 is connected with the fifth lance 9, and the sixth branch pipe 44 is connected with the sixth lance 10, so as to supply desulfurizer to the fifth lance 9 and the sixth lance 10 respectively.

[0065] It should be noted that the first branch pipe 23, the sixth branch pipe 24, the third branch pipe 33, the fourth branch pipe 34, the fifth branch pipe 43 and the sixth branch pipe 44 all adopt large-radius elbow pipes to provide channels for desulfurizer delivery, avoiding blockage of desulfurizer during delivery.

[0066] Optionally, the dry desulfurization reactor further comprises a support 11 for supporting the Venturi tube 1, so as to keep the Venturi tube 1 stable during desulfurization reaction.

[0067] Optionally, the support 11 includes a first frame 111 and a second frame 112, the second frame 112 being disposed at the upper end of the first frame 111, and the shape of the end face of the second frame 112 for contacting the Venturi tube 1 being adapted to the shape of the Venturi tube 1.

[0068] Specifically, such as Figure 1 As shown, the first frame 111 supports the Venturi tube 1 to increase the distance between the Venturi tube 1 and the ground, adapting to various reaction scenarios. The second frame 112 is located on top of the first frame, with its bottom surface matching the top surface of the first frame 111, so that the second frame 112 is stably mounted on the first frame 111. The top surface of the second frame 112, i.e., the end face that contacts the Venturi tube 1, is shaped to match the shape of the Venturi tube 1 to fix the Venturi tube 1 and ensure the normal operation of the dry desulfurization reaction.

[0069] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the protection scope of the present invention.

Claims

1. A dry desulfurization reactor characterized by, The device comprises a Venturi tube (1), a first desulfurizer conveying pipe (2), a second desulfurizer conveying pipe (3), a first spray gun (5), a second spray gun (6), a third spray gun (7) and a fourth spray gun (8). The first desulfurizer conveying pipe (2) and the second desulfurizer conveying pipe (3) are symmetrically arranged on both sides of the Venturi tube (1), and the first desulfurizer conveying pipe (2) and the second desulfurizer conveying pipe (3) are respectively communicated with the throat section of the Venturi tube (1). The first spray gun (5), the second spray gun (6), the third spray gun (7) and the fourth spray gun (8) are respectively arranged in the Venturi tube (1), the first desulfurizer conveying pipe (2) is connected with the first spray gun (5) and the second spray gun (6) respectively, the second desulfurizer conveying pipe (3) is connected with the third spray gun (7) and the fourth spray gun (8) respectively, and the spray ports of the first spray gun (5) and the third spray gun (7) are arranged non-coaxially. The first spray gun (5) and the third spray gun (7) are used for spraying desulfurizer in the direction perpendicular to the axis direction of the Venturi tube (1), and the second spray gun (6) and the fourth spray gun (8) are used for spraying desulfurizer in the direction parallel to the axis direction of the Venturi tube (1).

2. The dry desulfurization reactor according to claim 1, characterized by, The first desulfurizer conveying pipe (2) comprises a first main pipe (21), a first tee pipe (22), a first branch pipe (23) and a second branch pipe (24), the first main pipe (21), the first branch pipe (23) and the second branch pipe (24) are connected with the first tee pipe (22) respectively, the first branch pipe (23) and the second branch pipe (24) are communicated with the throat section of the Venturi tube (1) respectively, the first branch pipe (23) is connected with the first spray gun (5), and the second branch pipe (24) is connected with the second spray gun (6).

3. The dry desulfurization reactor according to claim 1, characterized by, The second desulfurizer conveying pipe (3) comprises a second main pipe (31), a second tee pipe (32), a third branch pipe (33) and a fourth branch pipe (34), the second main pipe (31), the third branch pipe (33) and the fourth branch pipe (34) are connected with the second tee pipe (32) respectively, the third branch pipe (33) and the fourth branch pipe (34) are communicated with the throat section of the Venturi tube (1) respectively, the third branch pipe (33) is connected with the third spray gun (7), and the fourth branch pipe (34) is connected with the fourth spray gun (8).

4. The dry desulfurization reactor according to claim 1, characterized by, The second spray gun (6) comprises a spray gun body (61), an elbow pipe (62) and a nozzle (63), the spray gun body (61) is internally provided with a channel for conveying desulfurizer, one end of the elbow pipe (62) is connected with the spray gun body (61), and the other end is connected with the nozzle (63) so that the central axis of the nozzle (63) is parallel to the axis direction of the Venturi tube (1). The fourth spray gun (8) has the same structure as the second spray gun (6), and the nozzles (63) of the fourth spray gun (8) and the second spray gun (6) are oriented in the same direction.

5. The dry desulfurization reactor according to claim 4, characterized by, The central axis of the nozzle (63) coincides with the central axis of the throat section of the Venturi tube (1).

6. The dry desulfurization reactor according to claim 1, characterized by, The first lance (5), the second lance (6), the third lance (7) and the fourth lance (8) are all located on the central horizontal plane of the throat section of the Venturi tube (1).

7. The dry desulfurization reactor according to claim 6, characterized by A third desulfurizer delivery pipe (4), a fifth lance (9) and a sixth lance (10) are further included. The third desulfurizer delivery pipe (4) is arranged above the throat section of the Venturi tube (1) and communicates with the throat section of the Venturi tube (1). The fifth lance (9) and the sixth lance (10) are arranged in the Venturi tube (1) respectively, the third desulfurizer delivery pipe (4) is connected with the fifth lance (9) and the sixth lance (10) respectively, and the fifth lance (9) and the sixth lance (10) are both located above the central horizontal plane.

8. The dry desulfurization reactor according to claim 7, characterized by, The third desulfurizer delivery pipe (4) comprises a third main pipe (41), a third three-way pipe (42), a fifth branch pipe (43) and a sixth branch pipe (44), the third main pipe (41), the fifth branch pipe (43) and the sixth branch pipe (44) are connected with the third three-way pipe (42) respectively, the fifth branch pipe (43) and the sixth branch pipe (44) communicate with the throat section of the Venturi tube (1) respectively, the fifth branch pipe (43) is connected with the fifth lance (9), and the sixth branch pipe (44) is connected with the sixth lance (10).

9. The dry desulfurization reactor according to any one of claims 1 to 8, characterized in that, A support (11) is further included, and the support (11) is used for supporting the Venturi tube (1).

10. The dry desulfurization reactor according to claim 9, characterized by, The support (11) comprises a first frame body (111) and a second frame body (112), the second frame body (112) is arranged at the upper end of the first frame body (111), and the end face shape of the second frame body (112) used for contacting the Venturi tube (1) is matched with the shape of the Venturi tube (1).

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