CN210410212U

CN210410212U - High-performance SCR denitration device

Info

Publication number: CN210410212U
Application number: CN201920870798.3U
Authority: CN
Inventors: 万伟
Original assignee: Hongan Fangda Environmental Protection Engineering Co ltd
Current assignee: Hongan Fangda Environmental Protection Engineering Co ltd
Priority date: 2019-06-11
Filing date: 2019-06-11
Publication date: 2020-04-28
Anticipated expiration: 2029-06-11

Abstract

The utility model discloses a high performance SCR denitrification facility, including the denitration case, the internally mounted of denitration case has the SCR catalyst, the sheath is installed to one side of denitration case, and the inboard of sheath installs the reductant bin, main transfer line is installed on the top of reductant bin, the outside winding of flue gas shunt tubes has the cold water coil pipe, cold water conveying pipe is installed to top one side of heat exchanger, smoke and dust coupling is installed to one side of heat exchanger, the waste liquid collecting box is installed to the bottom of denitration case, the outlet duct is installed to top one side of waste liquid collecting box, the active carbon adsorption purification head is installed on the top of outlet duct. The utility model discloses a mixing tank installs in the top of denitration case, and the shower head is installed to the bottom of mixing tank, installs the heat exchanger in one side of mixing tank, can utilize the heat in the flue gas, increases its functionality, and make full use of heat energy can be energy-concerving and environment-protective.

Description

High-performance SCR denitration device

Technical Field

The utility model relates to a SCR denitrification facility technical field specifically is a high performance SCR denitrification facility.

Background

The denitration technology mainly comprises selective non-catalytic reduction (SNCR), Selective Catalytic Reduction (SCR) and a process combining the SNCR and the SCR, wherein the SCR has high denitration efficiency (70-90%), is a mature denitration technology and is the most widely applied technology for denitration, and the SCR means that nitrogen oxides in flue gas selectively react with a reducing agent to generate nitrogen and water and remove nitrogen oxides (NOx) in the flue gas.

The SCR denitration device at the present stage has various defects, such as single function, low denitration efficiency and inconvenient use.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high performance SCR denitrification facility to the function singleness that provides in solving above-mentioned background art, the denitration is inefficient, and uses inconvenient scheduling problem.

In order to achieve the above object, the utility model provides a following technical scheme: a high-performance SCR denitration device comprises a denitration box, wherein an SCR catalyst is arranged inside the denitration box, a sheath is arranged on one side of the denitration box, a reducing agent storage box is arranged on the inner side of the sheath, a main infusion tube is arranged at the top end of the reducing agent storage box, a spray head is arranged at the top of the denitration box, a mixing tank is arranged at the top end of the spray head, an infusion tube joint is arranged on one side of the mixing tank, a reducing agent shunt tube is arranged at one end of the infusion tube joint, a heat exchanger is arranged on the other side of the mixing tank, a flue gas shunt tube is arranged inside the heat exchanger, a cold water coil tube is wound on the outer side of the flue gas shunt tube, a cold water conveying tube is arranged on one side of the top of the heat exchanger, a smoke tube joint is arranged on one side of, and the top end of the air outlet pipe is provided with an activated carbon adsorption purification head.

Preferably, the reducing agent shunt tubes are provided with three reducing agent shunt tubes, and the three reducing agent shunt tubes are arranged between the infusion tube connector and the main infusion tube.

Preferably, the number of the smoke shunt pipes is three, and the smoke shunt pipes are communicated with the inner cavity of the smoke pipe joint.

Preferably, a cold water pump is installed on the cold water conveying pipe, and one end of the cold water conveying pipe is communicated with the cold water coil pipe.

Preferably, the SCR catalyst is arranged into a honeycomb structure, and a grid opening of the SCR catalyst is positioned right below the spray header.

Preferably, the reducing agent storage tanks are provided in total in three, and the three reducing agent storage tanks are provided in a structure for storing different types of reducing agents.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a blending tank installs in the top of denitration case, and the bottom of blending tank installs the shower head, install the heat exchanger in one side of blending tank, can utilize the heat in the flue gas, increase its functionality, make full use of heat energy, can be energy-concerving and environment-protective, install the smoke and dust coupling in one side of heat exchanger, carry the flue gas through it to mix with the reductant in the blending tank, then spray the flue gas after mixing on the SCR catalyst through the shower head, accomplish the denitration reaction, this kind of design can make the reaction more thorough and comprehensive, the degree of consistency is big, and the scope is wide, increase the denitration effect;

2. the utility model discloses a three reductant shunt tubes are installed to one side of blending tank, can increase diffusion efficiency with reductant evenly distributed to the different positions of blending tank through three reductant shunt tubes, and through the mode of mixing the re-reaction in advance, denitration efficiency can accelerate, avoids appearing the inhomogeneous incomplete problem of reaction.

Drawings

Fig. 1 is a schematic structural diagram of a high-performance SCR denitration device according to the present invention;

FIG. 2 is a schematic structural view of the mixing tank of the present invention;

fig. 3 is a top view of an SCR catalyst of the present invention.

In the figure: 1. a cold water delivery pipe; 2. a heat exchanger; 3. a smoke pipe joint; 4. a flue gas shunt pipe; 5. A cold water coil pipe; 6. a mixing tank; 7. a connector of the infusion tube; 8. a reducing agent shunt tube; 9. a main infusion tube; 10. a reductant storage tank; 11. a sheath; 12. a shower head; 13. an SCR catalyst; 14. a denitration box; 15. a waste liquid collection box; 16. an air outlet pipe; 17. an active carbon adsorption purification head.

Detailed Description

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.

Referring to fig. 1-3, the present invention provides an embodiment: a high-performance SCR denitration device comprises a denitration box 14, an SCR catalyst 13 is arranged inside the denitration box 14, the SCR catalyst 13 is a substance which causes a reducing agent to selectively react with nitrogen oxide in flue gas at a certain temperature in an SCR reaction, a jacket 11 is arranged on one side of the denitration box 14, a reducing agent storage box 10 is arranged on the inner side of the jacket 11, the reducing agent storage box 10 is conveniently and fixedly arranged by the jacket 11 and can be protected, a main infusion tube 9 is arranged at the top end of the reducing agent storage box 10, the main infusion tube 9 is used for conveying the reducing agent to a reducing agent shunt tube 8, the reducing agent is conveyed to a mixing tank 6 through the reducing agent shunt tube 8, a spray head 12 is arranged at the top of the denitration box 14, the spray head 12 is used for mixing the flue gas and the reducing agent and then spraying to the denitration box 14, the mixing tank 6 is arranged at the top end of the, a liquid pipe joint 7 is arranged on one side of a mixing tank 6, a reducing agent shunt pipe 8 is arranged at one end of the liquid pipe joint 7, a heat exchanger 2 is arranged on the other side of the mixing tank 6, the heat exchanger 2 can replace heat in the heat, the heat is fully utilized, energy is saved, a flue gas shunt pipe 4 is arranged inside the heat exchanger 2, a cold water coil pipe 5 is wound outside the flue gas shunt pipe 4, a cold water conveying pipe 1 is arranged on one side of the top of the heat exchanger 2, the cold water conveying pipe 1 is used for conveying cold water into the cold water coil pipe 5, the cold water coil pipe 5 is wound outside the flue gas shunt pipe 4, the cold water in the cold water pipe absorbs the heat in the flue gas shunt pipe 4, a smoke pipe joint 3 is arranged on one side of the heat exchanger 2, the smoke pipe joint 3 is connected with the flue gas pipe, the flue gas is input, a waste liquid collecting box, an air outlet pipe 16 is installed on one side of the top of the waste liquid collecting box 15, the air outlet pipe 16 is used for discharging the denitrated flue gas and nitrogen, an activated carbon adsorption purification head 17 is installed on the top end of the air outlet pipe 16, and the activated carbon adsorption purification head 17 can adsorb and purify pollution particles in the discharged gas.

Furthermore, three reducing agent shunt tubes 8 are arranged, the three reducing agent shunt tubes 8 are arranged between the infusion tube joint 7 and the main infusion tube 9, and reducing agents can be uniformly distributed into the mixing tank 6 through the reducing agent shunt tubes 8.

Furthermore, the number of the flue gas shunt pipes 4 is three, the flue gas shunt pipes 4 are communicated with the inner cavity of the flue gas pipe joint 3, and the flue gas shunt pipes 4 are used for conveying flue gas into the mixing tank 6 in three strands.

Further, a cold water pump is installed on the cold water delivery pipe 1, and one end of the cold water delivery pipe 1 is connected with the cold water coil 5, and the cold water delivery pipe 1 is used for delivering cold water into the cold water coil 5.

Further, the SCR catalyst 13 is configured as a honeycomb structure, and a grid opening of the SCR catalyst 13 is located right below the shower head 12, so that the reducing agent is caused to selectively react with nitrogen oxide in the flue gas at a certain temperature by the SCR catalyst 13.

Further, the reducing agent storage tanks 10 are provided in total of three, and the three reducing agent storage tanks 10 are provided in a structure for storing different types of reducing agents, which are used to store the three types of reducing agents by the three reducing agent storage tanks 10.

The working principle is as follows: when the equipment is used, a smoke dust pipeline is connected through a smoke dust pipe joint 3, smoke is conveyed into a smoke shunt pipe 4 in a heat exchanger 2, cold water is conveyed into a cold water coil 5 through a cold water conveying pipe 1, the cold water in the cold water coil 5 absorbs heat of the smoke in the smoke shunt pipe 4, then the smoke is conveyed into a mixing tank 6, a reducing agent in a reducing agent storage tank 10 is conveyed into the mixing tank 6 through a reducing agent shunt pipe 8 and a main liquid conveying pipe 9, the reducing agent is mixed with NOx in the smoke, then the reducing agent is sprayed to an SCR catalyst 13 through a spray header 12 to carry out chemical reaction to generate N2 and water, after the reaction, spray liquid waste liquid enters a waste liquid collecting box 15 to be collected, and the denitrated smoke and reaction product nitrogen are conveyed into an activated carbon adsorption purification head 17 through an air outlet pipe 16 to be purified and then are discharged into the air.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a high performance SCR denitrification facility, includes denitration case (14), its characterized in that: the utility model discloses a denitration device, including denitration case (14), main transfer line (9), shower head (12), mixing tank (6) are installed on the top of shower head (12), infusion tube connector (7) are installed to one side of mixing tank (6), reductant shunt tubes (8) are installed to the one end of infusion tube connector (7), heat exchanger (2) are installed to the opposite side of mixing tank (6), the internally mounted of heat exchanger (2) has flue gas shunt tubes (4), the outside winding of flue gas shunt tubes (4) has cold water coil pipe (5), cold water conveyer pipe (1) is installed to top one side of heat exchanger (2), the flue gas pipe joint (3) is installed to one side of heat exchanger (2), waste liquid collecting box (15) are installed to the bottom of denitration case (14), outlet duct (16) are installed to top one side of waste liquid collecting box (15), activated carbon adsorption purification head (17) are installed on the top of outlet duct (16).

2. The high-performance SCR denitration device according to claim 1, wherein: the reducing agent distribution pipe (8) is provided with three distribution pipes, and the three distribution pipes (8) are arranged between the infusion pipe joint (7) and the main infusion pipe (9).

3. The high-performance SCR denitration device according to claim 1, wherein: the number of the smoke shunt pipes (4) is three, and the smoke shunt pipes (4) are communicated with the inner cavity of the smoke pipe joint (3).

4. The high-performance SCR denitration device according to claim 1, wherein: and a cold water pump is arranged on the cold water conveying pipe (1), and one end of the cold water conveying pipe (1) is communicated with the cold water coil pipe (5).

5. The high-performance SCR denitration device according to claim 1, wherein: the SCR catalyst (13) is arranged to be a honeycomb structure, and a grid opening of the SCR catalyst (13) is positioned right below the spray header (12).

6. The high-performance SCR denitration device according to claim 1, wherein: the reducing agent storage tanks (10) are provided with three reducing agent storage tanks, and the three reducing agent storage tanks (10) are of structures for storing different types of reducing agents.