CN218012078U

CN218012078U - SCR denitration ammonia injection device

Info

Publication number: CN218012078U
Application number: CN202222038518.7U
Authority: CN
Inventors: 潘显仨; 郑勇; 顾镇; 苏龙龙
Original assignee: Anhui Fangxin Lihua Environmental Protection Technology Co ltd; Tongxing Environmental Protection Technology Co ltd
Current assignee: Anhui Fangxin Lihua Environmental Protection Technology Co ltd; Tongxing Environmental Protection Technology Co ltd
Priority date: 2022-08-02
Filing date: 2022-08-02
Publication date: 2022-12-13
Anticipated expiration: 2032-08-02

Abstract

The utility model provides an SCR denitration ammonia spraying device, which relates to the technical field of ammonia spraying devices and comprises a conveying pipe, wherein a connecting pipe is fixedly arranged on the surface of the conveying pipe in a sealing way, one end of the connecting pipe, which is far away from the conveying pipe, is connected with a joint in a rotating and sealing way, the connecting pipe is communicated with the inside of the joint, a plurality of blades are fixedly arranged on the side surface of the joint, a spray head is arranged on the surface of each blade, the input end of the spray head is communicated with a channel arranged in each blade, one end of the channel is communicated with the joint, and the distances between the spray heads arranged on the surfaces of the blades and the rotating axis of an installation cylinder are unequal; the flue gas drives the blade and rotates when passing through the blade, drives corresponding shower nozzle by the blade and rotates at the flue, installs the catalyst that the shower nozzle of different positions erupted, distributes in different positions in the flue for flue gas through the blade is abundant to be mixed with the catalyst, and the flue gas forms the vortex simultaneously and mixes more evenly under the blade rotates, has strengthened the hybrid of catalyst and flue gas, makes both mix further evenly.

Description

SCR denitration ammonia injection device

Technical Field

The utility model relates to an ammonia injection device technical field especially relates to an ammonia device is spouted in SCR denitration.

Background

The flue gas denitration technology is a Selective Catalytic Reduction (SCR) process, and the main principle is as follows: under the action of the catalyst, a reducing agent (generally mixed gas of ammonia and air) is fully mixed with nitrogen oxides in the flue gas at the tail of the boiler and reacts to generate nitrogen and water, so that the aim of denitration is fulfilled.

The reducing agent that uses need evenly spout the flue through corresponding ammonia injection device and mixes with the flue gas, the homogeneous mixing degree of reducing agent and flue gas will directly influence deNOx systems's operating efficiency and operational effect, the ammonia injection device who usually adopts among the prior art is the nozzle formula basically, and single nozzle is fixed in the flue, can only spray fixed certain region, for making the catalyst can fully mix with flue gas in the flue, need set up a large amount of nozzles, has increased manufacturing cost.

In view of the above, the inventor of the present application has invented an SCR denitration ammonia injection device.

SUMMERY OF THE UTILITY MODEL

The utility model provides an ammonia device is spouted in SCR denitration to the not enough of prior art.

The utility model discloses a following technical means realizes solving above-mentioned technical problem: the utility model provides a SCR denitration ammonia injection device, includes the conveyer pipe, conveyer pipe surface seal wears to be equipped with the connecting pipe, the connecting pipe is kept away from conveyer pipe one end and is rotated sealing connection and connect, the connecting pipe with connect inside intercommunication, it is fixed with a plurality of blades to connect the side, the shower nozzle has been worn on the blade surface, the shower nozzle input communicates with the passageway of seting up in the blade, passageway one end communicates with the joint, and a plurality of blade surface mounting's shower nozzle is apart from an installation section of thick bamboo rotation axis distance inequality.

Further, the blades are close to the flue gas input end.

Further, the joint comprises an installation cylinder and a connecting sleeve, wherein one end of the hollow part of the installation cylinder is opened, the connecting sleeve is fixed at the opening of the installation cylinder in a sealing manner, one end, far away from the conveying pipe, of the connecting pipe is located in the connecting sleeve, a rotary sealing element is sleeved at the end part of the connecting pipe and located in the connecting sleeve, and the connecting pipe is connected with the connecting sleeve in a rotary sealing manner through the rotary sealing element.

Further, the blades are fixed on the side face of the installation cylinder, and the channel is communicated with the inside of the installation cylinder.

The utility model has the advantages that:

the utility model discloses SCR denitration spouts ammonia device, the flue gas is when the through-blade, it rotates to drive the blade, drive corresponding shower nozzle by the blade and rotate at the flue, the catalyst that the shower nozzle of installation different positions erupted, distribute different positions in the flue, make the flue gas through the blade fully mix with the catalyst, the flue gas forms the vortex simultaneously and mixes more evenly under the blade rotates, the hybrid of catalyst and flue gas has been strengthened, make both mix further evenly, remove the shower nozzle, make the catalyst cover bigger region, it can make flue gas and catalyst mix more evenly to use a small amount of shower nozzle, reduce SCR denitration and spout ammonia device manufacturing cost.

Drawings

FIG. 1 is a schematic view of the installation structure of the SCR denitration ammonia spraying device and the flue of the present invention;

FIG. 2 is a schematic view of the connection structure of the blade and the joint of the present invention;

fig. 3 is the schematic view of the connection structure of the connection pipe and the connection sleeve of the present invention.

In the figure: 1. a flue; 2. a delivery pipe; 3. a connecting pipe; 4. a joint; 41. mounting the cylinder; 42. connecting sleeves; 5. a blade; 51. a channel; 6. a spray head; 7. the seal is rotated.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Examples

Please refer to fig. 1, the embodiment of the ammonia spraying device for SCR denitration includes a conveying pipe 2, the conveying pipe 2 is installed in a flue 1, a connecting pipe 3 is fixedly and hermetically inserted in the middle of the surface of the conveying pipe 2, the connecting pipe 3 is connected to a joint 4 by rotating and sealing the end far away from the conveying pipe 2, the connecting pipe 3 is communicated with the inside of the joint 4, a plurality of blades 5 are fixed on the side of the joint 4, a nozzle 6 is penetrated on the surface of each blade 5, the input end of the nozzle 6 is communicated with a channel 51 formed in each blade 5, one end of the channel 51 is communicated with the joint 4, and the distances from the nozzle 6 of the surface installation of the blades 5 to the rotation axis of the installation cylinder 41 are unequal, as shown in fig. 2.

During the use, flue gas is shown as A direction in figure 1 in the flue 1, the flue gas is when through blade 5, drive blade 5 and rotate, blade 5 direction of rotation is shown as B direction in figure 1, it is rotating at flue 1 to drive corresponding shower nozzle 6 by blade 5, install the catalyst that shower nozzle 6 of different positions erupted, distribute in different positions in flue 1, make the flue gas through blade 5 abundant and catalyst mixture, the flue gas forms the vortex simultaneously and mixes more evenly under blade 5 rotates, the hybrid of catalyst and flue gas has been strengthened, make both mix further evenly, remove the shower nozzle, make the bigger region of catalyst coverage, it is more even to use a small amount of shower nozzles can make flue gas and catalyst mixture, reduce SCR denitration ammonia injection device manufacturing cost.

The catalyst is ammonia gas or other suitable reducing agent.

Referring to fig. 1, the blades 5 are close to the flue gas input end of the flue 1, so as to reduce the impact of the flue 1 on the joint of the joint 4 and the connecting pipe 3 along the flue gas.

Referring to fig. 3, the joint 4 includes an installation cylinder 41 and a connection sleeve 42, the installation cylinder 41 is hollow and has an opening at one end, the connection sleeve 42 is fixed at the opening of the installation cylinder 41 in a sealing manner, the vane 5 is fixed on the side surface of the installation cylinder 41, the channel 51 is communicated with the installation cylinder 41, one end of the connection pipe 3 away from the delivery pipe 2 is located in the connection sleeve 42, the end of the connection pipe 3 is sleeved with a rotary sealing element 7, the rotary sealing element 7 is located in the connection sleeve 42, and the connection pipe 3 is connected with the connection sleeve 42 in a rotary sealing manner through the rotary sealing element 7. The rotary seal 7 may be a high temperature and high pressure resistant rotary oil seal or other suitable rotary seal as is known in the art.

It should be noted that, in this document, if there are first and second, etc., relational terms are only used for distinguishing one entity or operation from another entity or operation, and there is no necessarily any requirement or suggestion that any actual relation or order exists between the entities or operations. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a SCR denitration ammonia injection device, includes conveyer pipe (2), its characterized in that: conveyer pipe (2) surface seal is fixed wears to be equipped with connecting pipe (3), conveyer pipe (2) one end rotation sealing connection is kept away from in connecting pipe (3) has the joint (4), connecting pipe (3) and joint (4) inside intercommunication, joint (4) side-fixing has a plurality of blades (5), shower nozzle (6) have been worn on blade (5) surface, shower nozzle (6) input and the passageway (51) intercommunication of seting up in blade (5), passageway (51) one end with connect (4) intercommunication, and a plurality of blade (5) surface mounting's shower nozzle (6) are apart from installation section of thick bamboo (41) rotation axis distance inequality.

2. The SCR denitration ammonia injection device of claim 1, wherein: the blades (5) are close to the flue gas input end of the flue (1).

3. The SCR denitration ammonia injection device of claim 2, wherein: connect (4) including installation section of thick bamboo (41), adapter sleeve (42), the inside cavity of installation section of thick bamboo (41) one end opening thereof, adapter sleeve (42) are sealed to be fixed at installation section of thick bamboo (41) opening part, conveyer pipe (2) one end is located adapter sleeve (42) is kept away from in connecting pipe (3), connecting pipe (3) tip cover is equipped with rotary seal (7), rotary seal (7) are located adapter sleeve (42), connecting pipe (3) are connected through rotary seal (7) and adapter sleeve (42) rotary seal.

4. The SCR denitration ammonia injection device of claim 3, wherein: the blades (5) are fixed on the side face of the installation cylinder (41), and the channel (51) is communicated with the inside of the installation cylinder (41).