CN210570051U

CN210570051U - Steel rolling heating furnace flue gas dry desulfurization dust removal deNOx systems

Info

Publication number: CN210570051U
Application number: CN201921089738.4U
Authority: CN
Inventors: 郑勇; 吕文彬; 盛大海; 文章; 尹世杰
Original assignee: Anhui Fangxin Lihua Environmental Protection Technology Co ltd; Tongxing Environmental Protection Technology Co ltd
Current assignee: Anhui Fangxin Lihua Environmental Protection Technology Co ltd; Tongxing Environmental Protection Technology Co ltd
Priority date: 2019-07-11
Filing date: 2019-07-11
Publication date: 2020-05-19
Anticipated expiration: 2029-07-11

Abstract

The utility model discloses a steel rolling heating furnace flue gas dry desulfurization dust removal deNOx systems, including desulfurization reactor, sack cleaner, denitration reactor, axial fan and chimney, desulfurization reactor's inside is provided with filler and homogenization frame, and denitration reactor includes casing, flue gas homogenizer, catalytic reduction frame, guide plate, denitration catalyst and spouts the ammonia grid. This steel rolling heating furnace flue gas dry process desulfurization dust removal deNOx systems, desulfurization reactor handles the sulphide in the flue gas earlier, the homogenization frame can carry out the homogenization to the flue gas, guarantee the filter effect, the particulate matter in the flue gas is got rid of to the sack cleaner and the product that desulfurization reaction generated, denitration reactor is arranged in getting rid of the nitride in the flue gas, flue gas after handling at last is discharged from chimney department, whole desulfurization dust removal system is efficient, the process systems is simple, there is not waste water treatment and discharge problem, no secondary pollution, equipment is reliable and durable simultaneously, long service life is high, very be fit for handling a large amount of flue gases.

Description

Steel rolling heating furnace flue gas dry desulfurization dust removal deNOx systems

Technical Field

The utility model relates to an industrial flue gas treatment technical field specifically is a steel rolling heating furnace flue gas dry process desulfurization dust removal deNOx systems.

Background

The continuous deepening of the industrial industrialization process in China causes serious atmospheric pollution and acid rain in certain areas in China. This is because a large amount of harmful fumes and harmful gases, such as sulfur dioxide and various nitrogen-containing compounds, are discharged during production work due to industries such as coal burning. In recent years, SO2, NOx pollution, has even surpassed soot pollution as the first major pollutant of the atmospheric environment. For long-term development later, the pollution treatment strength of China is continuously increased, and the environmental-friendly discharge standard is also getting tighter and tighter.

The heating furnace is used as key equipment in the steel rolling process, generally blast furnace gas or mixed gas is used as fuel, harmful substances such as particles, SO2, NOx and the like can be generated in the production process, the environment is polluted, and the latest national or local emission standard cannot be met. Therefore, the desulfurization and denitrification equipment is required to be used for removing the pollutants as much as possible to reach the emission standard, but the existing flue gas filtering system has the problems of poor filtering effect and easy generation of secondary pollutants.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a steel rolling heating furnace flue gas dry process desulfurization dust removal deNOx systems possesses that the filter effect is good, does not have the advantage of waste water treatment and emission problem, can solve the problem among the prior art.

In order to achieve the above object, the utility model provides a following technical scheme: a steel rolling heating furnace flue gas dry desulfurization dust removal denitration system comprises a desulfurization reactor, a bag-type dust remover, a denitration reactor, an axial flow fan and a chimney, wherein a filler and a homogenizing frame are arranged inside the desulfurization reactor, the homogenizing frame is positioned below the filler, the output end of the desulfurization reactor is connected with the bag-type dust remover through a pipeline, the output end of the bag-type dust remover is connected with the denitration reactor through a pipeline, the denitration reactor comprises a shell, a flue gas homogenizer, a catalytic reduction frame, a guide plate, a denitration catalyst and an ammonia injection grid, the top end of the shell is connected with the output end of the bag-type dust remover through a pipeline, the flue gas homogenizer, the catalytic reduction frame, the guide plate, the denitration catalyst and the ammonia injection grid are arranged on the inner side of the shell, the ammonia injection grid is positioned above the flue gas homogenizer, the guide plate is also arranged above the flue, the catalytic reduction frame is filled with a denitration catalyst, the bottom end of the shell is connected with an axial flow fan through a pipeline, and the axial flow fan is connected with a chimney through a pipeline.

Preferably, the filler is a desulfurizing agent.

Preferably, the air inlet of the bag-type dust collector is lower than the air outlet of the bag-type dust collector.

Preferably, the homogenization frame includes frame, flight, conical plate and folded plate, and frame fixed connection desulfurization reactor's inner wall, the upper edge of the fixed conical plate of frame, set up evenly distributed's bleeder vent on the conical plate, the flight is installed to the bottom surface of conical plate, and the folded plate is installed to the lateral wall department of flight.

Preferably, the flue gas homogenizer is distributed with uniformly distributed small holes.

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

this steel rolling heating furnace flue gas dry process desulfurization dust removal deNOx systems, the sulphide in the flue gas is handled earlier to the desulfurization reactor, the homogenization frame that the inside of desulfurization reactor set up can carry out the homogenization to the flue gas, guarantee the filter effect, the particulate matter in the flue gas is got rid of to the sack cleaner and the product that desulfurization reaction generated, the denitration reactor is arranged in getting rid of the nitride in the flue gas, flue gas after handling at last is discharged from the chimney, whole desulfurization dust removal system is efficient, the process systems is simple, there are no waste water treatment and discharge problems, no secondary pollution, equipment is reliable and durable simultaneously, long service life is high, very be fit for handling a large amount of flue gases.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural view of a denitration reactor of the present invention;

FIG. 3 is a schematic structural view of a desulfurization reactor of the present invention;

FIG. 4 is a schematic bottom view of the homogenization frame structure of the present invention;

fig. 5 is a schematic view of the folded plate structure of the present invention.

In the figure: 1. a desulfurization reactor; 11. a filler; 12. a homogenization frame; 121. a frame; 122. a spiral sheet; 123. a conical plate; 124. folding the plate; 2. a bag-type dust collector; 3. a denitration reactor; 31. a housing; 32. a flue gas homogenizer; 33. a catalytic reduction frame; 34. a baffle; 35. a denitration catalyst; 36. an ammonia injection grid; 4. an axial flow fan; 5. and (4) a chimney.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, a steel rolling heating furnace flue gas dry desulfurization dust removal and denitration system comprises a desulfurization reactor 1, a bag-type dust collector 2, a denitration reactor 3, an axial flow fan 4 and a chimney 5, wherein the desulfurization reactor 1 is used as a first flue gas treatment device, the desulfurization reactor 1 treats sulfides in the flue gas, a filler 11 and a homogenizing frame 12 are arranged inside the desulfurization reactor 1, the filler 11 is a desulfurizer, when the flue gas passes through the filler 11, the desulfurizer in the filler 11 filters the flue gas, the homogenizing frame 12 comprises a frame 121, a spiral sheet 122, a conical plate 123 and a folded plate 124, the frame 121 is fixedly connected with the inner wall of the desulfurization reactor 1, the frame 121 fixes the upper edge of the conical plate 123, the conical plate 123 is provided with uniformly distributed air holes, the spiral sheet 122 is arranged on the bottom surface of the conical plate 123, the folded plate 124 is arranged on the side wall of the spiral sheet 122, and the homogenizing frame 12 is a homogenizing, homogenization frame 12 can homogenize the flue gas after being installed, the filtering effect is ensured, when the flue gas passes through homogenization frame 12, the flue gas can be shunted by spiral piece 122, the homogenization effect is achieved, homogenization frame 12 is located below filler 11, the output end of desulfurization reactor 1 is connected with bag-type dust remover 2 through a pipeline, the air inlet position of bag-type dust remover 2 is lower than the air outlet position thereof, the filtering efficiency of bag-type dust remover 2 is high, the bag-type dust remover 2 removes the particulate matter in the flue gas and the products generated by the desulfurization reaction, the output end of bag-type dust remover 2 is connected with denitration reactor 3 through a pipeline, denitration reactor 3 comprises a shell 31, a flue gas homogenizer 32, a catalytic reduction frame 33, a guide plate 34, a denitration catalyst 35 and an ammonia injection grid 36, the top end of shell 31 is connected with the output end of bag-type dust remover 2 through a pipeline, the inner, Catalytic reduction frame 33, guide plate 34, denitration catalyst 35 and ammonia injection grid 36, ammonia injection grid 36 is located the top of flue gas homogenizer 32, be covered with evenly distributed's aperture on the flue gas homogenizer 32, the aperture on flue gas homogenizer 32 can be worn to pass through to the flue gas, flue gas homogenizer 32's top still is equipped with guide plate 34, guide plate 34 is used for the water conservancy diversion, flue gas homogenizer 32's below is equipped with catalytic reduction frame 33, catalytic reduction frame 33 intussuseption is filled with denitration catalyst 35, denitration reactor 3 is arranged in getting rid of the nitride in the flue gas, there is axial fan 4 casing 31's bottom has through the pipe connection, axial fan 4 accelerates the flue gas flow, axial fan 4 passes through pipe connection chimney 5, the flue gas after the filtration reaches emission standard, the flue gas after the final treatment is discharged from chimney 5.

The steel rolling heating furnace flue gas dry desulfurization dust removal denitration system comprises a desulfurization reactor 1, a bag-type dust remover 2, a denitration reactor 3, an axial flow fan 4 and a chimney 5, wherein the desulfurization reactor 1 is used as a first flue gas treatment device, the desulfurization reactor 1 treats sulfides in flue gas, a filler 11 and a homogenizing frame 12 are arranged inside the desulfurization reactor 1, the filler 11 is a desulfurizer, when the flue gas passes through the filler 11, the desulfurizer in the filler 11 filters the flue gas, the homogenizing frame 12 can homogenize the flue gas after being installed, the filtering effect is ensured, when the flue gas passes through the homogenizing frame 12, the flue gas can be shunted by a spiral sheet 122 to play a role of homogenizing effect, the output end of the desulfurization reactor 1 is connected with the bag-type dust remover 2 through a pipeline, the bag-type dust remover 2 removes particulate matters in the flue gas and products generated by the desulfurization reaction, and the air inlet position of the bag-type dust remover 2, this kind of sack cleaner 2's filtration efficiency is high, flue gas after sack cleaner 2 handles gets into denitration reactor 3, denitration reactor 3 is arranged in getting rid of the nitride in the flue gas, there is axial fan 4 bottom of casing 31 through the pipe connection, axial fan 4 accelerates the flue gas flow, axial fan 4 passes through pipe connection chimney 5, the flue gas after the filtration reaches emission standard, the flue gas after the final processing is discharged from chimney 5, whole desulfurization dust pelletizing system is efficient, process systems is simple, there is not waste water treatment and discharge problem, no secondary pollution, the while equipment is reliable and durable, long service life is high, very be fit for handling a large amount of flue gas.

In summary, the following steps: this steel rolling heating furnace flue gas dry process desulfurization dust removal deNOx systems, desulfurization reactor 1 is handled the sulphide in the flue gas earlier, homogenization frame 12 that desulfurization reactor 1's inside set up can carry out the homogenization to the flue gas, guarantee the filter effect, the particulate matter in the flue gas is got rid of to sack cleaner 2 and the product that desulfurization reaction generated, denitration reactor 3 is arranged in getting rid of the nitride in the flue gas, flue gas after handling at last is discharged from chimney 5, whole desulfurization dust pelletizing system is efficient, process systems is simple, there is not waste water treatment and discharge problems, no secondary pollution, the while equipment is reliable and durable, long service life is high, very be fit for handling a large amount of flue gases.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a steel rolling heating furnace flue gas dry process desulfurization dust removal deNOx systems, includes desulfurization reactor (1), sack cleaner (2), denitration reactor (3), axial fan (4) and chimney (5), its characterized in that: the denitration device is characterized in that a filler (11) and a homogenizing frame (12) are arranged in the desulfurization reactor (1), the homogenizing frame (12) is located below the filler (11), the output end of the desulfurization reactor (1) is connected with a bag-type dust collector (2) through a pipeline, the output end of the bag-type dust collector (2) is connected with a denitration reactor (3) through a pipeline, the denitration reactor (3) comprises a shell (31), a flue gas homogenizer (32), a catalytic reduction frame (33), a guide plate (34), a catalyst (35) and an ammonia injection grid (36), the top end of the shell (31) is connected with the output end of the bag-type dust collector (2) through a pipeline, the flue gas homogenizer (32), the catalytic reduction frame (33), the guide plate (34), the denitration catalyst (35) and the ammonia injection grid (36) are arranged on the inner side of the shell (31), and the ammonia injection grid (36) is located above the flue, the top of flue gas homogenizer (32) still is equipped with guide plate (34), and the below of flue gas homogenizer (32) is equipped with catalytic reduction frame (33), and catalytic reduction frame (33) intussuseption is filled with denitration catalyst (35), and there is axial fan (4) bottom of casing (31) through the pipe connection, and axial fan (4) pass through pipe connection chimney (5).

2. The steel rolling heating furnace flue gas dry desulfurization, dust removal and denitration system according to claim 1, characterized in that: the filler (11) is a desulfurizing agent.

3. The steel rolling heating furnace flue gas dry desulfurization, dust removal and denitration system according to claim 1, characterized in that: the air inlet position of the bag-type dust collector (2) is lower than the air outlet position thereof.

4. The steel rolling heating furnace flue gas dry desulfurization, dust removal and denitration system according to claim 1, characterized in that: homogenization frame (12) are including frame (121), flight (122), conical plate (123) and folded plate (124), and frame (121) fixed connection desulfurization reactor (1)'s inner wall, the top edge of frame (121) fixed conical plate (123), set up evenly distributed's bleeder vent on conical plate (123), and flight (122) are installed to the bottom surface of conical plate (123), and folded plate (124) are installed to the lateral wall department of flight (122).

5. The steel rolling heating furnace flue gas dry desulfurization, dust removal and denitration system according to claim 1, characterized in that: the flue gas homogenizer (32) is fully distributed with small holes which are uniformly distributed.