CN213942718U - Ammonia injection spinning ammonia injection mixer for ammonia injection system - Google Patents

Abstract

The utility model discloses an ammonia injection system is with spouting ammonia spin ammonia injection blender, including the first female pipe of ammonia subregion of spouting, the first centre of spouting the female pipe of ammonia subregion is provided with the subregion governing valve, and the first one end of spouting the female pipe of ammonia subregion is connected with spouts the female pipe of ammonia, the lower extreme of the female pipe of first ammonia subregion of spouting is connected with rotary joint's one end, and rotary joint's the other end is connected with the second and spouts the upper end of the female pipe of ammonia subregion, and the second is spouted and is equipped with first gear on the outer wall of the female pipe of ammonia subregion, and one side perpendicular meshing of first gear is connected with the second gear, and one side of second gear is connected with the one end of transmission shaft, and the other end of transmission shaft is connected with the motor. This ammonia injection system is with spouting ammonia spin ammonia injection blender passes through the motor and drives the second and spout the rotation of ammonia subregion female pipe for a plurality of rotary spray head can also spout ammonia subregion female pipe revolution round the second in the rotation, thereby can eliminate to have the interval and the ammonia that results in between the rotary spray head is inhomogeneous, has further improved the flow field homogeneity in ammonia region.

Description

Ammonia injection spinning ammonia injection mixer for ammonia injection system

The technical field is as follows:

the utility model relates to a coal fired power plant equipment technical field specifically is an ammonia injection system is with spouting ammonia spin ammonia injection mixer.

Background art:

the method comprises the steps of adopting liquid ammonia as a denitration reducing agent in a coal-fired power plant, preparing the liquid ammonia by a urea catalytic hydrolysis technology, conveying a urea solution with the concentration of about 50% to a urea hydrolysis reactor, carrying out hydrolysis reaction under the conditions that the pressure is about 0.35-0.55 MPa and the temperature is about 130-150 ℃ to generate mixed gas with the ammonia concentration of about 37.5%, separating the mixed gas by a steam-water separator on the upper part of the hydrolysis reactor, mixing and diluting the mixed gas with hot dilution air in an ammonia/air mixer after pressure reduction and flow control adjustment until the ammonia concentration is below 5%, and finally entering an SCR reactor through an ammonia injection system for denitration.

According to the ammonia injection spinning mixer, the components thereof and the SCR denitration ammonia injection device comprising the same, which are disclosed by the patent number CN201921111694.0, the uniformity of a flow field of an ammonia area is improved through a plurality of spinning nozzles, but the ammonia injection effect is not uniform enough due to gaps among the nozzles only by means of the spinning of the nozzles.

This ammonia injection system is with spouting ammonia spin ammonia injection blender passes through the motor and drives the second and spout the rotation of ammonia subregion female pipe for a plurality of rotary spray head can also spout ammonia subregion female pipe revolution round the second in the rotation, thereby can eliminate to have the interval and the ammonia that results in between the rotary spray head is inhomogeneous, has further improved the flow field homogeneity in ammonia region.

The utility model has the following contents:

an object of the utility model is to provide an ammonia injection system is with spouting ammonia spin ammonia injection mixer to solve the problem among the above-mentioned background art.

The utility model discloses by following technical scheme implement: the utility model provides an ammonia injection system is with spouting ammonia spin ammonia injection blender, includes the first female pipe of ammonia subregion of spouting, and the first middle of spouting the female pipe of ammonia subregion is provided with the subregion governing valve, and the first one end of spouting the female pipe of ammonia subregion is connected with spouts the female pipe of ammonia, the first one end of spouting the female pipe of ammonia subregion is connected with rotary joint's one end, and rotary joint's the other end is connected with the second and spouts the upper end of the female pipe of ammonia subregion, and the cover is equipped with first gear on the outer wall of the female pipe of ammonia subregion is spouted to the second, and one side perpendicular meshing of first gear is connected with the second gear, and one side of second gear is connected with the one end of transmission shaft, and the other end of transmission shaft is connected with the motor, the lower extreme of the female pipe of ammonia subregion is spouted to the second is connected with spouts ammonia subregion branch pipe, and the lower extreme of spouting ammonia subregion branch pipe is connected with rotatory nozzle.

Preferably, the outer wall of the first ammonia spraying partition mother pipe is connected with the middle of a first cross frame, and the first ammonia spraying partition mother pipe is fixedly connected with the first cross frame.

Preferably, the rotating joint, the first gear, the second gear and the transmission shaft are externally sleeved with a housing.

Preferably, round holes are formed in the top and the bottom of the housing, and the first ammonia spraying partition main pipe and the second ammonia spraying partition main pipe penetrate through the round holes in the top and the bottom of the housing respectively.

Preferably, the outer wall of the housing is uniformly provided with an anticorrosive coating, and the anticorrosive coating is made of Teflon.

Preferably, the outer wall of the second ammonia spraying partition main pipe is connected with a second cross frame, a round hole is formed in the middle of the second cross frame, the second ammonia spraying partition main pipe penetrates through the round hole, and the second ammonia spraying partition main pipe is rotatably connected with the second cross frame.

The utility model has the advantages that: this ammonia injection system is with spouting ammonia spin ammonia injection blender passes through the motor and drives the second and spout the rotation of ammonia subregion female pipe for a plurality of rotary spray head can also spout ammonia subregion female pipe revolution round the second in the rotation, thereby can eliminate to have the interval and the ammonia that results in between the rotary spray head is inhomogeneous, has further improved the flow field homogeneity in ammonia region.

Description of the drawings:

in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a front view of an ammonia injection spinning ammonia injection mixer for an ammonia injection system according to the present invention;

FIG. 2 is an enlarged schematic structural view of the ammonia injection spinning ammonia injection mixer of the present invention shown in FIG. 1;

FIG. 3 is a top view of the ammonia injection system of the present invention with a self-rotating ammonia injection mixer.

In the figure: 1. spout the female pipe of ammonia, 2, subregion governing valve, 3, the female pipe of first ammonia subregion of spouting, 4, first crossbearer, 5, rotary joint, 6, first gear, 7, second gear, 8, motor, 9, transmission shaft, 10, the second spouts the female pipe of ammonia subregion, 11, second crossbearer, 12, housing, 13, spout ammonia subregion branch pipe, 14, rotatory nozzle, 15, anticorrosive coating.

The specific implementation mode is as follows:

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

Referring to fig. 1-3, the present invention provides a technical solution: an ammonia spraying spinning ammonia spraying mixer for an ammonia spraying system comprises a first ammonia spraying subarea main pipe 3, a subarea adjusting valve 2 is arranged in the middle of the first ammonia spraying subarea main pipe 3, one end of the first ammonia spraying subarea main pipe 3 is connected with an ammonia spraying main pipe 1, the lower end of the first ammonia spraying subarea main pipe 3 is connected with one end of a rotary joint 5, the outer wall of the first ammonia spraying subarea main pipe 3 is connected with the middle of a first cross frame 4, the first ammonia spraying subarea main pipe 3 is fixedly connected with the first cross frame 4, two ends of the first cross frame 4 are fixedly connected with the inner wall of a smoke pipe, a round hole is arranged in the middle of the first cross frame 4, the first ammonia spraying subarea main pipe 3 is inserted into the round hole, the first ammonia spraying subarea main pipe 3 and the first ammonia spraying subarea main pipe 3 are fixed by clamping, the structure can further improve the stability of the first ammonia spraying subarea main pipe 3, the other end of the rotary joint 5 is connected with the upper end of a second ammonia spraying subarea main pipe 10, the two ends of the rotary joint 5 are fixed through threaded connection, the function of the rotary joint is to ensure that the first ammonia spraying subarea main pipe 3 and the second ammonia spraying subarea main pipe 10 are kept connected when rotating, the outer wall of the second ammonia spraying subarea main pipe 10 is connected with a second cross frame 11, a round hole is arranged in the middle of the second cross frame 11, the second ammonia spraying subarea main pipe 10 is arranged in the round hole in a penetrating way, the second ammonia spraying subarea main pipe 10 is rotatably connected with the second cross frame 11 through a bearing, the two ends of the second cross frame 11 are fixedly connected with the inner wall of a smoke tube, the structure can improve the stability of the second ammonia spraying subarea main pipe 10, the outer wall of the second ammonia spraying subarea main pipe 10 is sleeved with a first gear 6, the first gear 6 and the second gear are fixed through clamping connection, one side of the first gear 6 is vertically meshed and connected with a second gear 7, one side of the second gear 7 is connected with one end of a transmission shaft 9, and the second gear 7 is fixedly connected through a screw, the other end of the transmission shaft 9 is connected with a motor 8, the transmission shaft 9 is fixedly connected with a shaft of the motor 8, the structure enables the second ammonia spraying subarea main pipe 10 to automatically rotate under the driving of the motor 8, the lower end of the second ammonia spraying subarea main pipe 10 is connected with an ammonia spraying subarea branch pipe 13, the two branch pipes are fixedly connected, the lower end of the ammonia spraying subarea branch pipe 13 is connected with a rotary spray head 14, the rotary spray head 14 can spin under the action of flowing pressure, a housing 12 is sleeved outside the rotary joint 5, the first gear 6, the second gear 7 and the transmission shaft 9, one end of the housing 12 is fixedly connected with the inner wall of the smoke pipe, the structure enables the rotary joint 5, the first gear 6, the second gear 7 and the transmission shaft 9 to be shielded and protected to prevent the smoke corrosion, round holes are formed in the top and the bottom of the housing 12, and the first ammonia spraying subarea main pipe 3 and the second ammonia spraying subarea main pipe 10 are respectively arranged in the round holes in the top and the bottom of the housing 12, housing 12 and the first female pipe 3 of ammonia subregion of spouting and the second junction of spouting female pipe 10 of ammonia subregion can set up the sealing rubber circle, and this structure makes housing 12 and the first female pipe 3 of ammonia subregion of spouting and the second be connected of spouting female pipe 10 inseparabler, prevents to leak, evenly is provided with anticorrosive coating 15 on the outer wall of housing 12, and anticorrosive coating 15 adopts the special fluorine dragon material, and this structure can improve housing 12's corrosion protection.

The working principle is as follows: when the ammonia injection system is used, the main part of the device is arranged in a smoke pipe, ammonia mixed gas enters a first ammonia injection subarea main pipe 3 from an ammonia injection main pipe 1 and then enters a second ammonia injection subarea main pipe 10, then enters the rotary spray head 14 from the ammonia spraying partition branch pipe 13 to spray and then is discharged, the rotary spray head 14 can spin under the fluid pressure to drive the ammonia mixed gas to be dispersed, meanwhile, after the motor 8 is started, the second ammonia spraying partition main pipe 10 is driven to rotate by the transmission shaft 9, the first gear 6 and the second gear 7, so that the rotary spray head 14 can revolve around the second ammonia spraying subarea mother pipe 10 while rotating, therefore, the ammonia injection unevenness caused by the space between the rotary spray heads 14 can be eliminated, and the flow field evenness of the ammonia area is further improved, which is the use process of the ammonia injection spinning ammonia injection mixer for the ammonia injection system.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. The utility model provides an ammonia injection system is with spouting ammonia spin ammonia injection blender, includes that first spout the female pipe of ammonia subregion (3), the centre of the female pipe of first spout ammonia subregion (3) is provided with subregion governing valve (2), and the one end of the female pipe of first spout ammonia subregion (3) is connected with spouts the female pipe of ammonia (1), its characterized in that: the lower extreme of the female pipe of first ammonia spraying subregion (3) is connected with the one end of rotary joint (5), and the other end of rotary joint (5) is connected with the upper end that the female pipe of ammonia subregion (10) was spouted to the second, and the cover is equipped with first gear (6) on the outer wall of the female pipe of ammonia subregion (10) is spouted to the second, and the perpendicular meshing in one side of first gear (6) is connected with second gear (7), and one side of second gear (7) is connected with the one end of transmission shaft (9), and the other end of transmission shaft (9) is connected with motor (8), the lower extreme of the female pipe of ammonia subregion (10) is spouted to the second is connected with and spouts ammonia subregion branch pipe (13), and the lower extreme of spouting ammonia subregion branch pipe (13) is connected with rotatory nozzle (14).

2. An ammonia injection spinning ammonia injection mixer for an ammonia injection system according to claim 1, wherein: the outer wall of the first ammonia spraying partition mother pipe (3) is connected with the middle of a first transverse frame (4), and the first ammonia spraying partition mother pipe (3) is fixedly connected with the first transverse frame (4).

3. An ammonia injection spinning ammonia injection mixer for an ammonia injection system according to claim 1, wherein: the outer sleeves of the rotary joint (5), the first gear (6), the second gear (7) and the transmission shaft (9) are provided with a housing (12).

4. An ammonia injection spinning ammonia injection mixer for an ammonia injection system according to claim 3, wherein: round holes are formed in the top and the bottom of the housing (12), and the first ammonia spraying partition main pipe (3) and the second ammonia spraying partition main pipe (10) penetrate through the round holes in the top and the bottom of the housing (12) respectively.

5. An ammonia injection spinning ammonia injection mixer for an ammonia injection system according to claim 3, wherein: the outer wall of the housing (12) is uniformly provided with an anti-corrosion coating (15), and the anti-corrosion coating (15) is made of Teflon.

6. An ammonia injection spinning ammonia injection mixer for an ammonia injection system according to claim 1, wherein: the outer wall of the second ammonia spraying partition main pipe (10) is connected with a second transverse frame (11), a round hole is formed in the middle of the second transverse frame (11), the second ammonia spraying partition main pipe (10) penetrates through the round hole, and the second ammonia spraying partition main pipe (10) is rotatably connected with the second transverse frame (11).

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