CN217662559U - Device for improving temperature of smoke at inlet of boiler denitration reactor - Google Patents
Device for improving temperature of smoke at inlet of boiler denitration reactor Download PDFInfo
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- CN217662559U CN217662559U CN202123306650.3U CN202123306650U CN217662559U CN 217662559 U CN217662559 U CN 217662559U CN 202123306650 U CN202123306650 U CN 202123306650U CN 217662559 U CN217662559 U CN 217662559U
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Abstract
The utility model discloses a device for improving the temperature of smoke at the inlet of a boiler denitration reactor, which comprises a heating component, a heating component and a micro-oil gun, wherein the heating component comprises an economizer outlet flue and the micro-oil gun is arranged outside the economizer outlet flue; and the catalytic assembly is arranged at one end of the economizer outlet flue, and comprises a catalytic tube arranged at one end of the economizer outlet flue and an output tube arranged at one end of the catalytic tube. The device of the utility model is additionally provided with the micro-oil gun at the rear part of the turning part of the exit flue of the economizer, so as to directly heat the denitration inlet flue gas, wherein the part is closer to the denitration system, the heat loss in midway is smaller, and the temperature rise is quicker; and the space is enough here, easily arranges oil gun, platform, pavement etc. moreover easily operation and maintenance work.
Description
Technical Field
The utility model relates to a boiler denitration reactor technical field, especially an improve device of boiler denitration reactor entry smoke temperature.
Background
At present, a Selective Catalytic Reduction (SCR) denitration technology is adopted for some boilers, and the SCR denitration technology refers to that under the action of a catalyst, a reducing agent (liquid ammonia) reacts with nitrogen oxides in flue gas to generate harmless nitrogen and water so as to remove NOx in the flue gas, when the temperature of the flue gas of the boiler is low, a denitration device cannot be put into operation, and the problems that the temperature of the flue gas is low, the catalyst loses activity, the nitrogen oxides in the flue gas slowly react with ammonia gas, sulfur dioxide in the flue gas reacts with the ammonia gas to generate ammonium bisulfate, the ammonium bisulfate is in a viscous liquid state and is easily attached to the surfaces of a catalyst and a heat storage element of an air preheater to cause catalyst failure, blockage of the catalyst and the heat storage element of the air preheater and the like are mainly considered, so that the operation temperature of the Selective Catalytic Reduction (SCR) denitration technology is generally set to be 315-420 ℃, and the denitration temperature of the inlet of the reactor at the initial stage of the boiler and the later stage of the boiler is generally low and is difficult to reach 315 ℃. In the initial stage of starting the furnace, the coal mill is started to produce powder after micro oil is put into the furnace, a large amount of nitrogen oxides are produced during coal powder combustion, because the smoke temperature at the inlet of the denitration reactor is low, denitration cannot be put into the furnace, overranging is caused, if no coal powder is put into the furnace, smoke is heated only by the heat of the oil gun, because the heating surface along the way is more, the heat absorption capacity is overlarge, if the denitration inlet reaches the designed operation temperature, on one hand, the oil consumption is overlarge, on the other hand, the heating time is overlong, about 7 hours is preliminarily estimated, and the micro oil heat is insufficient, a large oil gun must be put into the furnace, the effect of large oil gun is poor, and a rear catalyst, an electric dust removal system and a desulfurization system are easily polluted. In the initial stage of starting the furnace, the nitrogen oxides are excessively discharged for about 11 hours due to low smoke temperature, and in the later stage of stopping the furnace, the nitrogen oxides are excessively discharged for about 2 hours. Therefore, the denitration problem in the start-stop furnace stage is in urgent need of solving.
SUMMERY OF THE UTILITY MODEL
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract of the specification and the title of the application to avoid obscuring the purpose of this section, the abstract of the specification and the title of the application, and such simplifications or omissions are not intended to limit the scope of the invention.
In view of the above-mentioned and/or the problem that exists in the device of current improvement boiler denitration reactor entry gas temperature, provided the utility model discloses.
Therefore, the utility model aims to solve the problem of how can both guarantee under the boiler operating mode that denitration reaction zone entry temperature reaches more than 315 ℃.
In order to solve the technical problem, the utility model provides a following technical scheme: a device for improving the smoke temperature at the inlet of a boiler denitration reactor comprises a heating assembly, a heating assembly and a heating assembly, wherein the heating assembly comprises an economizer outlet flue and a micro-oil gun arranged outside the economizer outlet flue; and the catalytic assembly is arranged at one end of the coal economizer outlet flue, and comprises a catalytic tube arranged at one end of the coal economizer outlet flue and an output tube arranged at one end of the catalytic tube.
As an improve a preferred scheme of device of boiler denitration reactor entry gas temperature, wherein: the economizer outlet flue comprises an injection pipe arranged at one end and a first connecting pipe arranged at one end of the injection pipe.
As an improve a preferred scheme of device of boiler denitration reactor entry gas temperature, wherein: the injection pipe comprises an injection grid arranged inside and an expansion joint arranged at one end of the injection pipe.
As an improve a preferred scheme of device of boiler denitration reactor entry gas temperature, wherein: the first connecting pipe comprises a manhole arranged on the outer side, and one end of the first connecting pipe is communicated with one end of the catalytic pipe.
As an improve a preferred scheme of device of boiler denitration reactor entry gas temperature, wherein: the micro-oil gun comprises a connecting plate arranged at one end, and the outer side of the connecting plate is fixedly matched with the outer side of the coal economizer outlet flue.
As an improve a preferred scheme of device of boiler denitration reactor entry gas temperature, wherein: the connecting plate is including setting up in inside connecting bolt, the outside of connecting bolt with the inside screw-thread fit of connecting plate.
As an improve a preferred scheme of device of boiler denitration reactor entry gas temperature, wherein: the catalysis pipe is including setting up the recess in inside, the output tube is including setting up the second even pipe in one end.
As an improve a preferred scheme of device of boiler denitration reactor entry gas temperature, wherein: the recess is including setting up in inside opening to and set up in inside first catalyst layer.
As an improve a preferred scheme of device of boiler denitration reactor entry gas temperature, wherein: the groove further comprises a second catalyst layer arranged on one side of the first catalyst layer and a third catalyst layer arranged on one side of the second catalyst layer.
As an improve a preferred scheme of device of boiler denitration reactor entry gas temperature, wherein: the second connecting pipe comprises an air preheater arranged at one end.
The utility model discloses beneficial effect does: the utility model adds the micro-oil gun at the rear part of the turning part of the exit flue of the economizer to directly heat the denitration inlet flue gas, wherein the part is closer to the denitration system, the heat loss in midway is smaller, and the temperature rise is faster; and the space is enough here, easily arranges oil gun, platform, pavement etc. moreover easily operation and maintenance work.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor. Wherein:
FIG. 1 is a structural view of an apparatus for increasing the inlet flue gas temperature of a boiler denitration reactor.
FIG. 2 is a view showing the structure of a catalytic module of an apparatus for increasing the inlet flue gas temperature of a boiler denitration reactor.
FIG. 3 is another perspective view of the catalytic assembly of the apparatus for increasing the inlet flue gas temperature of a boiler denitration reactor.
FIG. 4 is an enlarged view of the structure of the apparatus for increasing the inlet flue gas temperature of a boiler denitration reactor at A.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanying the present invention are described in detail below with reference to the accompanying drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be implemented in other ways different from the specific details set forth herein, and one skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Furthermore, the references herein to "one embodiment" or "an embodiment" refer to a particular feature, structure, or characteristic that may be included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Example 1
Referring to fig. 1 and 2, for the first embodiment of the present invention, this embodiment provides a device for increasing the inlet flue gas temperature of a boiler denitration reactor, the device for increasing the inlet flue gas temperature of a boiler denitration reactor comprises a heating component 100 and a catalytic component 200, by setting the heating component 100 and the catalytic component 200, a tiny oil gun is additionally installed at the rear of the turning part of an outlet flue of an economizer, the inlet flue gas is directly heated, the position is closer to a denitration system, the heat loss in midway is smaller, and the temperature rise is faster; and the space is enough here, easily arranges oil gun, platform, pavement etc. moreover easily operation and maintenance work.
Specifically, the heating assembly 100 includes an economizer outlet flue 101, and a micro-oil gun 102 disposed outside the economizer outlet flue 101. Through setting up economizer export flue 101 and tiny-oil gun 102, can make things convenient for direct heating denitration entry flue gas, it is nearer from deNOx systems, the heat loss midway is less, the intensification is very fast, and the space is enough, easily arranges oil gun, platform, pavement etc. easily operation, maintenance.
Preferably, the catalytic assembly 200 is disposed at one end of the economizer outlet flue 101, and includes a catalytic tube 201 disposed at one end of the economizer outlet flue 101, and an output tube 202 disposed at one end of the catalytic tube 201. By providing the catalyst pipe 201 and the output pipe 202, the catalysis can be facilitated.
When the denitration device is used, the heating assembly 100 and the catalytic assembly 200 are arranged, and the economizer outlet flue 101 and the micro-oil gun 102 are arranged, so that denitration inlet flue gas can be conveniently and directly heated, the position is close to a denitration system, heat loss in the midway is small, and temperature rise is fast; and the space is enough here, easily arranges oil gun, platform, pavement etc. moreover easily operation and maintenance work.
Example 2
Referring to fig. 1 to 4, the present embodiment is based on the previous embodiment, which is a second embodiment of the present invention.
Specifically, the economizer outlet flue 101 includes an injection pipe 101a provided at one end, and a first connection pipe 101b provided at one end of the injection pipe 101 a. By providing the injection pipe 101a and the first connection pipe 101b, the connection with the catalyst pipe 201 can be facilitated.
Preferably, the injection pipe 101a includes an injection mesh 101a-1 disposed inside, and an expansion joint 101a-2 disposed at one end of the injection pipe 101 a. By arranging the injection grid 101a-1 and the expansion joint 101a-2, the pipeline can be prevented from being damaged, and the service life of the pipeline is prolonged.
Preferably, the first pipe 101b includes a manhole 101b-1 provided at an outer side, and one end of the first pipe 101b communicates with one end of the catalyst pipe 201. Through setting up first connecting pipe 101b, can conveniently be connected with catalysis pipe 201, conveniently catalyze.
Preferably, the tiny-oil gun 102 comprises a connecting plate 102a arranged at one end, and the outer side of the connecting plate 102a is fixedly matched with the outer side of the economizer outlet flue 101. Through setting up connecting plate 102a, can conveniently be connected little oil gun 102 and economizer outlet flue 101, conveniently install little oil gun 102, and the quantity of little oil gun 102 sets up to six, conveniently heats.
Preferably, the connection plate 102a includes an internally disposed connection pin 102a-1, the outer side of the connection pin 102a-1 engaging with the internal threads of the connection plate 102 a. By arranging the connecting bolt 102a-1, the connecting plate 102a can be fixedly connected conveniently and can be detached and replaced conveniently.
When the denitration device is used, the heating assembly 100 and the catalytic assembly 200 are arranged, and the economizer outlet flue 101 and the micro-oil gun 102 are arranged, so that denitration inlet flue gas can be conveniently and directly heated, the position is close to a denitration system, heat loss in the midway is small, and temperature rise is fast; and here space is enough, easily arrange oil gun, platform, pavement etc. and easily operation and maintenance work, through setting up connecting plate 102a, can conveniently be connected little oil gun 102 and economizer export flue 101, conveniently install little oil gun 102, and the quantity of little oil gun 102 sets up to six, conveniently heats, through setting up connecting bolt 102a-1, can conveniently carry out fixed connection to connecting plate 102a, and conveniently dismantle the change.
Example 3
Referring to fig. 1 to 4, a third embodiment of the present invention is based on the first two embodiments.
Specifically, the catalyst tube 201 includes a groove 201a disposed inside, and the output tube 202 includes a second connecting tube 202a disposed at one end. By arranging the groove 201a and the second connecting pipe 202a, the connection with the air preheater 202a-1 at one end can be facilitated, and the first catalyst layer 201a-2, the second catalyst layer 201a-3 and the third catalyst layer 201a-4 can be conveniently installed.
Preferably, the groove 201a includes a through-hole 201a-1 disposed inside, and a first catalyst layer 201a-2 disposed inside. The catalytic tube 201 and the first connection tube 101b can be easily connected by providing the through port 201 a-1.
Preferably, the groove 201a further includes a second catalyst layer 201a-3 disposed at one side of the first catalyst layer 201a-2, and a third catalyst layer 201a-4 disposed at one side of the second catalyst layer 201 a-3. By providing the first catalyst layer 201a-2, the second catalyst layer 201a-3, and the third catalyst layer 201a-4, the catalytic operation can be facilitated.
Preferably, the second connecting pipe 202a includes an air preheater 202a-1 disposed at one end. By providing the air preheater 202a-1, safety can be improved.
When the denitration device is used, the heating assembly 100 and the catalytic assembly 200 are arranged, and the economizer outlet flue 101 and the micro-oil gun 102 are arranged, so that denitration inlet flue gas can be conveniently and directly heated, the position is close to a denitration system, heat loss in the midway is small, and temperature rise is fast; the space is enough, oil guns, platforms, footpaths and the like are easy to arrange, operation and maintenance work are easy, the micro-oil gun 102 can be conveniently connected with the coal economizer outlet flue 101 by arranging the connecting plate 102a, the micro-oil gun 102 is convenient to install, the number of the micro-oil guns 102 is six, heating is convenient, the connecting plate 102a can be conveniently and fixedly connected by arranging the connecting bolt 102a-1, disassembly and replacement are convenient, the air preheater 202a-1 at one end can be conveniently connected by arranging the groove 201a and arranging the second connecting pipe 202a, the first catalyst layer 201a-2, the second catalyst layer 201a-3 and the third catalyst layer 201a-4 are convenient to install, through setting up first catalyst layer 201a-2, second catalyst layer 201a-3 and third catalyst layer 201a-4, can conveniently carry out catalytic operation, through the heat transfer of air preheater 202a-1, make the primary air temperature improve, can directly satisfy the needs of the hot-blast powder process of boiler, boiler ignition air heater can be stopped use, the auxiliary steam consumption has been reduced, simultaneously, this hot primary air temperature is higher than the air temperature of air heater heating, the initial stage of lighting, can improve the powder process system and exert oneself, accelerate the start-up speed, the secondary air temperature improves to some extent after the heat transfer, steady burning and complete combustion to the initial stage of lighting have very big benefit, and flue tiny oil oxygen volume after burning, in the flue has been reduced, make denitration entry nitrogen oxide also descend by a wide margin (the initial stage of starting the stove, because oxygen volume is too high, lead to denitration entry nitrogen oxide to be high), the pressure of denitrification facility has been alleviateed.
It should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.
Claims (10)
1. The utility model provides an improve device of boiler denitration reactor entry gas temperature which characterized in that: comprises the steps of (a) preparing a substrate,
the heating assembly (100) comprises an economizer outlet flue (101) and a micro-oil gun (102) arranged outside the economizer outlet flue (101); and the number of the first and second groups,
the catalytic assembly (200) is arranged at one end of the economizer outlet flue (101), and comprises a catalytic tube (201) arranged at one end of the economizer outlet flue (101) and an output tube (202) arranged at one end of the catalytic tube (201).
2. The apparatus for increasing the temperature of flue gas at the inlet of a boiler denitration reactor as set forth in claim 1, wherein: the economizer outlet flue (101) comprises an injection pipe (101 a) arranged at one end and a first connecting pipe (101 b) arranged at one end of the injection pipe (101 a).
3. The apparatus for increasing the inlet flue gas temperature of a boiler denitration reactor of claim 2, wherein: the injection pipe (101 a) comprises an injection grid (101 a-1) arranged inside and an expansion joint (101 a-2) arranged at one end of the injection pipe (101 a).
4. The apparatus for increasing the inlet flue gas temperature of a boiler denitration reactor as set forth in claim 2 or 3, wherein: the first connecting pipe (101 b) comprises a manhole (101 b-1) arranged on the outer side, and one end of the first connecting pipe (101 b) is communicated with one end of the catalytic pipe (201).
5. The apparatus for increasing the inlet flue gas temperature of a boiler denitration reactor as set forth in claim 4, wherein: the micro-oil gun (102) comprises a connecting plate (102 a) arranged at one end, and the outer side of the connecting plate (102 a) is fixedly matched with the outer side of the coal economizer outlet flue (101).
6. The apparatus for increasing the inlet flue gas temperature of a boiler denitration reactor of claim 5, wherein: the connecting plate (102 a) comprises a connecting bolt (102 a-1) arranged in the inner part, and the outer side of the connecting bolt (102 a-1) is matched with the inner thread of the connecting plate (102 a).
7. The apparatus for increasing the inlet flue gas temperature of a boiler denitration reactor as set forth in claim 5 or 6, wherein: the catalytic tube (201) comprises a groove (201 a) arranged inside, and the output tube (202) comprises a second connecting tube (202 a) arranged at one end.
8. The apparatus for increasing the inlet flue gas temperature of a boiler denitration reactor as set forth in claim 7, wherein: the groove (201 a) comprises a through opening (201 a-1) arranged inside and a first catalyst layer (201 a-2) arranged inside.
9. The apparatus for increasing the inlet flue gas temperature of a boiler denitration reactor as set forth in claim 8, wherein: the groove (201 a) further includes a second catalyst layer (201 a-3) disposed on a side of the first catalyst layer (201 a-2), and a third catalyst layer (201 a-4) disposed on a side of the second catalyst layer (201 a-3).
10. The apparatus for increasing the inlet flue gas temperature of a boiler denitration reactor of claim 8 or 9, wherein: the second connecting pipe (202 a) comprises an air preheater (202 a-1) arranged at one end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123306650.3U CN217662559U (en) | 2021-12-23 | 2021-12-23 | Device for improving temperature of smoke at inlet of boiler denitration reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123306650.3U CN217662559U (en) | 2021-12-23 | 2021-12-23 | Device for improving temperature of smoke at inlet of boiler denitration reactor |
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| CN217662559U true CN217662559U (en) | 2022-10-28 |
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| CN202123306650.3U Active CN217662559U (en) | 2021-12-23 | 2021-12-23 | Device for improving temperature of smoke at inlet of boiler denitration reactor |
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