CN213913157U

CN213913157U - SCR denitration reactor

Info

Publication number: CN213913157U
Application number: CN202021835928.9U
Authority: CN
Inventors: 彭勤国; 陈聪; 周冬宇
Original assignee: Wuxi Xiyu Environmental Protection Technology Co ltd
Current assignee: Wuxi Xiyu Environmental Protection Technology Co ltd
Priority date: 2020-08-27
Filing date: 2020-08-27
Publication date: 2021-08-10
Anticipated expiration: 2030-08-27

Abstract

The utility model discloses a SCR denitration reactor, including the reactor body, the reactor body includes the casing, the flue gas entry has been seted up to the first end at casing top, the exhanst gas outlet has been seted up to the second end of casing bottom, fixed mounting has a plurality of bearing grids that are used for optimizing the flow field in the casing, vertical direction interval arrangement is followed to a plurality of bearing grids, the upper end of every bearing grid bears and is provided with the denitration catalyst, the upper portion of every bearing grid is provided with the trachea that is used for sweeping denitration catalyst surface dust, on the axial one end of trachea seals and is fixed in shells inner wall, set up a plurality of gas pocket in the tracheal periphery, the axial other end of trachea links to each other with the pulse soot blower. The utility model discloses on arranging the denitration catalyst in the bearing grid, the flue gas can carry out rectification once more through the bearing grid after the denitration catalyst for the flow field is more even, has not only improved the denitration effect, and can effectively prolong the life of denitration catalyst, has reduced the maintenance cost.

Description

SCR denitration reactor

Technical Field

The utility model relates to a SCR denitration device technical field especially relates to an SCR denitration reactor.

Background

The SCR denitration technology has high removal efficiency, is suitable for the current environmental protection requirement, and obtains high attention and wide application in the power industry.

At present, SCR denitration reactor all is provided with several layers of denitration catalyst for improving desorption efficiency usually, then, after upper denitration catalyst again, and the flow field in the casing is inhomogeneous to can lead to the catalytic reaction of lower floor's denitration catalyst comparatively concentrated, not only influence the denitration effect, and increased the maintenance frequency, the intangible cost that has increased, from this, the urgent need is solved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to above-mentioned problem, provide a SCR denitration reactor to solve the problem that proposes in the above-mentioned background art.

The utility model aims at realizing through the following technical scheme:

the utility model provides a SCR denitration reactor, includes the reactor body, the reactor body includes the casing, the flue gas entry has been seted up to the first end at casing top, just the exhanst gas outlet has been seted up to the second end of casing bottom, fixed mounting has a plurality of bearing grids that are used for optimizing the flow field in the casing, a plurality of bearing grids along vertical direction interval arrangement, every the upper end of bearing grid bears and is provided with denitration catalyst, and every the upper portion of bearing grid is provided with the trachea that is used for sweeping denitration catalyst surface dust, the axial one end of trachea seals and is fixed in on the shells inner wall, set up a plurality of gas pocket in tracheal periphery, the axial other end of trachea links to each other with the pulse soot blower, the pulse soot blower install in the outside of casing.

As a preferred scheme of the utility model, be located in the casing the flue gas entrance is provided with the first guide plate that the polylith plays the water conservancy diversion effect, the first guide plate interval parallel arrangement of polylith.

As an optimized scheme of the utility model, first guide plate is the arc structure.

As an optimized scheme of the utility model, be located in the casing the exhanst gas outlet department is provided with the second guide plate that plays the water conservancy diversion effect.

As a preferred scheme of the utility model, the denitration catalyst is plate catalyst or honeycomb formula catalyst or ripple plate catalyst.

The beneficial effects of the utility model are that, compared with the prior art, the utility model discloses on arranging the denitration catalyst in the bearing grid, the flue gas can carry out rectification once more through the bearing grid after the denitration catalyst for the flow field is more even, has not only improved the denitration effect, and can effectively prolong the life of denitration catalyst, has reduced the maintenance cost, and in addition, tracheal setting can sweep denitration catalyst surface dust to further improve the denitration effect, simple structure, easily realization.

Drawings

Fig. 1 is a schematic structural diagram of an SCR denitration reactor.

In the figure:

1. a housing; 2. a flue gas inlet; 3. a flue gas outlet; 4. a load-bearing grid; 5. an air tube; 6. a pulse soot blower; 7. a first baffle; 8. a second baffle.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings. It is to be understood that the embodiments described herein are merely illustrative of the present invention and are not limiting thereof.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an SCR denitration reactor.

In this embodiment, an SCR denitration reactor includes a reactor body, the reactor body includes a housing 1, a flue gas inlet 2 is disposed at a first end of the top of the housing 1, a flue gas outlet 3 is disposed at a second end of the bottom of the housing 1, 3 bearing grids 4 for optimizing a flow field are fixedly mounted in the housing 1, the 3 bearing grids 4 are arranged at intervals along a vertical direction, a denitration catalyst is supported at an upper end of each bearing grid 4, the denitration catalyst is a honeycomb catalyst, an air pipe 5 for blowing dust on the surface of the denitration catalyst is disposed at an upper portion of each bearing grid 4, an axial end of the air pipe 5 is sealed and fixed on an inner wall of the housing 1, a plurality of air holes are disposed on the periphery of the air pipe 5, and the axial other end of the air pipe 5 is connected to a pulse soot blower 6, the pulse sootblower 6 is mounted on the outside of the housing 1.

Specifically, in this embodiment, the casing 1 is located 2 departments of flue gas entry are provided with 4 first guide plates 7 that play the water conservancy diversion effect, first guide plate 7 is the arc structure, 4 first guide plates 7 interval parallel arrangement.

Specifically, in this embodiment, a second flow guide plate 8 for guiding flow is disposed at the flue gas outlet 3 in the housing 1.

It should be noted that, although in this embodiment, the denitration catalyst is a honeycomb catalyst, the present invention is not limited thereto, and the denitration catalyst can also be a plate catalyst or a corrugated plate catalyst.

Flue gas enters through the flue gas entry 2, enters the denitration catalyst at the top in the casing 1 after first guide plate 7 carries out flow field optimization, and the back gets into next layer denitration catalyst and next layer bearing grid 4 through bearing grid 4, flows out from the exhanst gas outlet 3 through second guide plate 8 after successively passing through denitration catalyst, bearing grid 4.

Above-mentioned SCR denitration reactor arranges the denitration catalyst in on bearing grid 4, and the flue gas can carry out rectification once more through bearing grid 4 after the denitration catalyst for the flow field is more even, has not only improved the denitration effect, and can effectively prolong the life of denitration catalyst, has reduced the maintenance cost, and in addition, setting up of trachea 5 can sweep denitration catalyst surface dust, thereby further improve the denitration effect, simple structure, easily realization.

The above embodiments have been merely illustrative of the basic principles and features of the present invention, and the present invention is not limited by the above embodiments, and does not depart from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims.

Claims

1. The utility model provides a SCR denitration reactor, includes the reactor body, its characterized in that: the reactor body comprises a shell, a flue gas inlet is formed in the first end of the top of the shell, a flue gas outlet is formed in the second end of the bottom of the shell, a plurality of bearing grids used for optimizing a flow field are fixedly mounted in the shell and are arranged at intervals in the vertical direction, denitration catalysts are loaded and arranged on the upper ends of the bearing grids, each bearing grid is provided with a gas pipe used for sweeping dust on the surface of the denitration catalysts, one axial end of the gas pipe is sealed and fixed on the inner wall of the shell, a plurality of gas holes are formed in the periphery of the gas pipe, the other axial end of the gas pipe is connected with a pulse soot blower, and the pulse soot blower is mounted outside the shell.

2. The SCR denitration reactor of claim 1, wherein: the casing is internally provided with a plurality of first guide plates for guiding flow, wherein the first guide plates are arranged at intervals in parallel.

3. The SCR denitration reactor of claim 2, wherein: the first guide plate is of an arc-shaped structure.

4. The SCR denitration reactor of claim 3, wherein: and a second guide plate for guiding flow is arranged in the shell and positioned at the smoke outlet.

5. An SCR denitration reactor as defined in any one of claims 1 to 4, wherein: the denitration catalyst is a plate type catalyst or a honeycomb type catalyst or a corrugated plate type catalyst.