CN211487139U

CN211487139U - Reheating circulating device after flue gas desulfurization and denitrification

Info

Publication number: CN211487139U
Application number: CN201922308197.6U
Authority: CN
Inventors: 缪晓东
Original assignee: Suzhou Liyi Environmental Technology Co ltd
Current assignee: Suzhou Liyi Environmental Technology Co ltd
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2020-09-15
Anticipated expiration: 2029-12-20

Abstract

The utility model discloses a reheating circulating device after flue gas desulfurization denitration, including heated warehouses and airflow port, heated warehouses both ends through connection has the airflow port, and the airflow port passes through flange and gas transmission pipeline through connection to the inside vertical sealed fixedly connected with baffler of heated warehouses, the inside shunt tubes that is provided with of heated warehouses, and the shunt tubes both ends run through the baffler and with baffler sealing connection, the inside resistance wire that is provided with of shunt tubes, and the resistance wire passes through connecting wire and external drive device electric connection. Has the advantages that: the utility model discloses a shunt tubes, inside the air current mouth got into the heated warehouses, the air current was dispersed into the little air current of stranded and is gone into the shunt tubes, is provided with the resistance wire in the shunt tubes, and resistance wire ohmic heating heats little air current, because the air current is divided into little strand, rate of heating is faster, and heating efficiency is higher, has solved the inhomogeneous problem of traditional ignition firing equipment heating, and the heating is more even.

Description

Reheating circulating device after flue gas desulfurization and denitrification

Technical Field

The utility model relates to a field particularly, relates to a reheat circulating device after flue gas desulfurization denitration.

Background

Along with the increase of the concern of society to air environment pollution problem, mill's tail gas must carry out SOx/NOx control when discharging, and carries out SOx/NOx control's in-process at tail gas, will lead to the fact tail gas temperature to reduce, and the tail gas temperature is lower to be unfavorable for coming into operation once more, can input after needing the reheat and participate in pyrolytic reaction for the reactor.

The flue gas heating device commonly used adopts the natural gas ignition to heat, ignition sets up in the backflow pipeline, because the pipeline diameter is great, the airflow diameter is great, lead to flame can't carry out the heating of full section to the air current, it is higher to lead to being close to flame one side temperature, and it is lower to keep away from flame one side temperature, thereby it is not enough even to make the heating, and simultaneously, the natural gas produces carbon monoxide and carbon dioxide in combustion process, smoke impurity has been increased, still need further carry out the decarbonization and handle, the process has been increased, it is comparatively troublesome to use.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a reheating circulating device after flue gas desulfurization denitration possesses that rate of heating is fast, the heating is even, the heating does not have the advantage of remaining, convenient to use, and then solves the problem in the above-mentioned background art.

For realize above-mentioned rate of heating is fast, the heating is even, the heating does not have advantage remaining, convenient to use, the utility model discloses a concrete technical scheme as follows:

the utility model provides a reheating circulating device after flue gas desulfurization denitration, includes heated warehouses and air current mouth, heated warehouses both ends through connection has the air current mouth, and the air current mouth passes through flange and gas transmission pipeline through connection to the inside vertical sealed fixedly connected with baffler of heated warehouses, the inside shunt tubes that is provided with of heated warehouses, and shunt tubes both ends run through the baffler and with baffler sealing connection, the inside resistance wire that is provided with of shunt tubes, and the resistance wire passes through connecting wire and external drive device electric connection.

Furthermore, the resistance wire is spiral, and the outer diameter of the resistance wire is slightly smaller than the inner diameter of the shunt tube.

Furthermore, the connecting wire runs through the shunt tubes and extends to the outside of the heating bin, the outer sleeve is sleeved on the surface of the connecting wire, a first heat insulation layer is filled between the outer sleeve and the connecting wire, and a second heat insulation layer wraps the outer surface of the outer sleeve, which is located on the outer surface of the heating bin.

Furthermore, a second sealant is plugged at the joint of the bottom surface of the outer sleeve and the surface of the shunt tube.

Furthermore, a first sealant is sealed at the joint of the bottom surface of the second heat insulation layer and the surface of the heating bin.

Furthermore, the shunt tubes, the heating bin and the blocking plate are all made of high-temperature-resistant metal materials.

Compared with the prior art, the utility model provides a reheat circulating device after flue gas desulfurization denitration possesses following beneficial effect:

(1) the utility model discloses a shunt tubes, inside the air current mouth got into the heated warehouses, the air current was dispersed into the little air current of stranded and is gone into the shunt tubes, is provided with the resistance wire in the shunt tubes, and resistance wire ohmic heating heats little air current, because the air current is divided into little strand, rate of heating is faster, and heating efficiency is higher, has solved the inhomogeneous problem of traditional ignition firing equipment heating, and the heating is more even.

(2) The utility model discloses a resistance wire, resistance wire ohmic heating, the temperature can reach 1800 ℃, satisfies the air heating temperature, simultaneously, does not produce fossil energy resource consumption among the heating process, does not produce organic matters such as carbon dioxide, and the heating is cleaner, has saved the operation of heating the gas of passing here after, and it is more convenient to use.

Drawings

FIG. 1 is a schematic structural diagram of a reheating and circulating device after desulfurization and denitrification of flue gas provided by the present invention;

FIG. 2 is a front view of a reheating and circulating apparatus after desulfurization and denitrification of flue gas according to the present invention;

fig. 3 is a sectional view of the reheating circulation device after desulfurization and denitrification of flue gas provided by the utility model.

In the figure:

1. a heating chamber; 2. a resistance wire; 3. a shunt tube; 4. a barrier plate; 5. an airflow port; 6. a connecting flange; 7. an outer sleeve; 8. a first insulating layer; 9. a connecting wire; 10. a second thermal insulation layer; 11. a first sealant; 12. and (7) a second sealant.

Detailed Description

Referring now to the drawings and the detailed description, as shown in fig. 1-3, a reheating circulation device after flue gas desulfurization and denitration according to an embodiment of the present invention comprises a heating chamber 1 and an airflow port 5, the two ends of the heating chamber 1 are connected with the airflow port 5 through a through connection, the airflow port 5 is connected with a gas pipeline through a connecting flange 6, a baffle plate 4 is vertically and fixedly connected in the heating chamber 1 in a sealing manner, a shunt tube 3 is arranged in the heating chamber 1, the shunt tube 3 is uniformly arranged from top to bottom, the two ends of the shunt tube 3 penetrate through the baffle plate 4 and are connected with the baffle plate 4 in a sealing manner to avoid gas leakage, a resistance wire 2 is arranged in the shunt tube 3, the resistance wire 2 is electrically connected with an external driving device through a connecting wire 9, the external driving device controls the resistance wire 2 to heat, the heating chamber is of a common structure, and is not shown in the drawings, the airflow flows through, the air current is dispersed into the stranded little air current and is gone into shunt tubes 3, is provided with resistance wire 2 in the

shunt tubes

3, and 2 ohmic heating of resistance wire heat little air current, because the air current is divided into little strand, rate of heating is faster, and heating efficiency is higher, has solved the inhomogeneous problem of traditional ignition heating equipment heating, and the heating is more even, and little air current assembles into the air current again after the heating, flows into the reactor and participates in the thermal reaction.

In one embodiment, resistance wire 2 becomes the heliciform, increases the heating area to improve heat exchange area, and 2 external diameters of resistance wire slightly are less than shunt tubes 3 internal diameters, reduce the heating dead angle, resistance wire 2 ohmic heating, the temperature can reach 1800 ℃, satisfy air heating temperature, simultaneously, do not produce fossil energy consumption in the heating process, do not produce organic matters such as carbon dioxide, the heating is cleaner, has saved the operation of heating the back here and purifying the gas, and it is more convenient to use.

In one embodiment, the connecting wire 9 runs through the shunt tube 3 and extends to the outside of the heating chamber 1, so that the connection is convenient, the outer sleeve 7 is sleeved on the surface of the connecting wire 9, the outer sleeve 7 plays an insulating role, a first heat insulation layer 8 is filled between the outer sleeve 7 and the connecting wire 9, the connecting wire 9 is prevented from being melted by the heating of hot air, the outer surface of the outer sleeve 7 is located on the outer surface of the heating chamber 1, a second heat insulation layer 10 wraps the outer surface of the heating chamber 1, the outer sleeve 7 is prevented from scalding workers, and the first heat insulation layer 8 and the second heat insulation layer 10.

In one embodiment, the joint of the bottom surface of the outer sleeve 7 and the surface of the shunt tube 3 is sealed by the second sealant 12, the second sealant 12 is a fireproof sealant to prevent high-temperature melting, and meanwhile, the second sealant 12 seals gaps to prevent air leakage.

In one embodiment, the first sealant 11 is sealed at the junction of the bottom surface of the second thermal insulation layer 10 and the surface of the heating chamber 1, the first sealant 11 is a fireproof sealant to prevent high-temperature melting, and meanwhile, the first sealant 11 seals gaps to prevent air leakage again.

In one embodiment, the shunt tube 3, the heating chamber 1 and the blocking plate 4 are made of high temperature resistant metal material, which prevents deformation due to heating, and can be made of tungsten steel.

The working principle is as follows:

install this device to suitable position, for external drive equipment of this device switch-on, the air current flows through inside airflow opening 5 gets into heated warehouses 1, the air current is dispersed into stranded little air current and enters shunt tubes 3, be provided with resistance wire 2 in the

shunt tubes

3, 2 ohmic heating of resistance wire, heat little air current, because the air current is divided into little thigh, the rate of heating is faster, the heating efficiency is higher, the inhomogeneous problem of traditional ignition heating equipment heating has been solved, it is more even to heat, little air current is through the heating back, assemble into the air current again, it participates in the thermal reaction to flow in the reactor, and simultaneously, the heating in-process does not produce fossil energy consumption, do not produce organic matter such as carbon dioxide, it is cleaner to heat, the operation of purifying gas here after having saved the heating, it is more convenient to use.

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

1. The utility model provides a reheating circulating device after flue gas desulfurization denitration, a serial communication port, including heated warehouses (1) and airflow port (5), heated warehouses (1) both ends through connection has airflow port (5), and airflow port (5) through flange (6) and gas transmission pipeline through connection to heated warehouses (1) inside vertical sealed fixedly connected with baffler (4), heated warehouses (1) inside is provided with shunt tubes (3), and shunt tubes (3) both ends run through baffler (4) and with baffler (4) sealing connection, shunt tubes (3) inside is provided with resistance wire (2), and resistance wire (2) through connecting wire (9) and external drive device electric connection.

2. The flue gas desulfurization and denitrification reheating circulating device as claimed in claim 1, wherein the resistance wire (2) is spiral, and the outer diameter of the resistance wire (2) is slightly smaller than the inner diameter of the shunt tube (3).

3. The device for recycling reheating after desulfurization and denitrification of flue gas according to claim 1, wherein the connecting line (9) penetrates through the shunt tube (3) and extends to the outside of the heating bin (1), an outer sleeve (7) is sleeved on the surface of the connecting line (9), a first heat insulation layer (8) is filled between the outer sleeve (7) and the connecting line (9), and a second heat insulation layer (10) is wrapped on the outer surface of the outer sleeve (7) which is positioned on the outer surface of the heating bin (1).

4. The flue gas desulfurization and denitrification reheating circulation device according to claim 3, wherein the joint of the bottom surface of the outer sleeve (7) and the surface of the shunt pipe (3) is plugged with a second sealant (12).

5. The flue gas desulfurization and denitrification reheating circulating device according to claim 3, wherein a first sealant (11) is sealed at the joint of the bottom surface of the second heat insulation layer (10) and the surface of the heating bin (1).

6. The flue gas desulfurization and denitrification reheating circulating device according to claim 1, wherein the flow dividing pipe (3), the heating chamber (1) and the blocking plate (4) are made of high temperature resistant metal materials.