CN215001666U

CN215001666U - Desulfurization system

Info

Publication number: CN215001666U
Application number: CN202120353361.XU
Authority: CN
Inventors: 刘超; 雷恒; 薛鹏; 白延军
Original assignee: SHAANXI SHANHUA COAL CHEMICAL INDUSTRY GROUP CO LTD
Current assignee: SHAANXI SHANHUA COAL CHEMICAL INDUSTRY GROUP CO LTD
Priority date: 2021-02-08
Filing date: 2021-02-08
Publication date: 2021-12-03
Anticipated expiration: 2031-02-08

Abstract

The application discloses desulfurization system relates to flue gas desulfurization technical field, has solved among the prior art a large amount of flue gas of emission among the boiler combustion process and has leaded to desulfurization system utilization ratio low, the problem of desulfurization inefficiency. The desulfurization system of the scheme comprises: the system comprises a boiler, an induced draft fan and a plurality of desulphurization devices which are arranged in parallel; the smoke outlet of the boiler is connected with the air suction inlet of the induced draft fan, and the desulphurization device is connected with the air outlet of the induced draft fan; the desulfurization device comprises a flue, a valve and a desulfurization tower, and an air outlet of the induced draft fan is connected with a smoke inlet of the desulfurization tower through the flue; the valve is arranged on the flue. By adopting the desulfurization system, the utilization rate of the desulfurization system in the thermal power generation process is realized, and the desulfurization efficiency is improved.

Description

Desulfurization system

Technical Field

The application relates to the technical field of flue gas desulfurization, in particular to a desulfurization system.

Background

In the process of power generation of the thermal power station, a large amount of flue gas containing sulfur and nitrate is released from burning coal, and the flue gas enters the atmosphere to generate pollution and form acid rain, so that equipment for desulfurization and denitration is needed to be used in the thermal power station, and the desulfurization and denitration equipment is used for filtering sulfur and nitrate in the flue gas discharged by the thermal power generator set.

Currently, sulfur in the filtered flue gas is filtered by using a desulfurizing tower. When the desulfurization tower is used for filtering sulfur in flue gas, each group of thermal generator sets is generally communicated with one desulfurization tower, the flue gas discharged by each group of thermal generator sets flows into the desulfurization tower opposite to the group of thermal generator sets through a flue for desulfurization, and the desulfurized flue gas is discharged into the atmosphere. However, each group of thermal power generating units only corresponds to one desulfurization tower, and the emission of flue gas of each group of thermal power generating units is too high due to various factors, so that the utilization rate of the desulfurization tower is reduced, and the desulfurization efficiency is low.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application solves the problems that in the prior art, the utilization rate of a desulfurization system is low and the efficiency of desulfurization is low due to a large amount of flue gas discharged in the combustion process of a boiler, realizes the utilization rate of the desulfurization system in the thermal power generation process, and improves the desulfurization efficiency.

The embodiment of the utility model provides a desulfurization system, include: the system comprises a boiler, an induced draft fan and a plurality of desulphurization devices which are arranged in parallel;

the smoke outlet of the boiler is connected with the air suction inlet of the induced draft fan, and the desulphurization device is connected with the air outlet of the induced draft fan;

the desulfurization device comprises a flue, a valve and a desulfurization tower, and an air outlet of the induced draft fan is connected with a smoke inlet of the desulfurization tower through the flue;

the valve is arranged on the flue.

Furthermore, one end of the flue connected with the smoke inlet of the desulfurizing tower is obliquely arranged, one end of the flue far away from the desulfurizing tower is horizontally arranged, and the position of the horizontal end of the flue is higher than that of the smoke inlet of the desulfurizing tower.

Furthermore, a first nozzle is arranged in the obliquely arranged flue, and the first nozzle sprays desulfurization liquid into the flue.

Furthermore, a plurality of guide plates which are uniformly staggered along the inner wall of the desulfurization tower are arranged in the desulfurization tower, and the guide plates are all inclined downwards.

Furthermore, the lower surface of the guide plate is provided with a second nozzle, and the second nozzle sprays desulfurization liquid into the desulfurization tower.

Further, the guide plate is arranged above the smoke inlet of the desulfurizing tower.

The embodiment of the utility model provides an in one or more technical scheme, following technological effect or advantage have at least:

the embodiment of the utility model adopts the mode that a plurality of desulphurization devices arranged in parallel are communicated with the smoke outlet of the boiler, thereby increasing the number of the desulphurization devices and improving the desulphurization efficiency; and a valve is arranged on the flue of each desulfurization device connected in parallel, so that the plurality of desulfurization devices can be switched and utilized flexibly. The scheme of the desulfurization system effectively solves the problems that the utilization rate of the desulfurization system is low and the efficiency of desulfurization is low due to a large amount of flue gas discharged by a boiler in the combustion process in the prior art, realizes the utilization rate of the desulfurization system in the thermal power generation process, and improves the desulfurization efficiency.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a flow diagram of a desulfurization system provided in an embodiment of the present application;

fig. 2 is a schematic structural diagram of a desulfurization device provided in an embodiment of the present application.

Icon: 1. a boiler; 2. an induced draft fan; 3. a desulfurization unit; 31. a flue; 311. a first nozzle; 32. a valve; 33. a desulfurizing tower; 331. a baffle; 332. a second nozzle.

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 some, but not all, embodiments of the present invention. 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.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. The terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.

The embodiment of the utility model provides a desulfurization system, as shown in figure 1, include: the system comprises a boiler 1, an induced draft fan 2 and a plurality of desulphurization devices 3 which are arranged in parallel; the smoke outlet of the boiler 1 is connected with the air suction inlet of the induced draft fan 2, and the desulphurization device 3 is connected with the air outlet of the induced draft fan 2; the desulfurization device 3 comprises a flue 31, a valve 32 and a desulfurization tower 33, and an air outlet of the induced draft fan 2 is connected with a smoke inlet of the desulfurization tower 33 through the flue 31; valve 32 is disposed on flue 31.

The embodiment of the utility model adopts the mode that a plurality of desulphurization devices 3 arranged in parallel are communicated with the smoke outlet of the boiler 1, thereby increasing the number of the desulphurization devices 3 and improving the desulphurization efficiency; and a valve 32 is arranged on the flue 31 of each parallel desulphurization device 3, so that the flexible switching and utilization of a plurality of desulphurization devices 3 are facilitated. Adopt the desulfurization system of this embodiment, effectively solved among the prior art boiler 1 and discharged a large amount of flue gases and lead to desulfurization system utilization ratio low in the combustion process, the problem of the inefficiency of desulfurization, realized the utilization ratio at thermal power in-process desulfurization system to and improved desulfurization efficiency.

Specifically, the flue gas in the boiler 1 is sucked into the flue 31 of the desulfurization device 3 through the induced draft fan 2, and the flue gas is conveyed into the desulfurization tower 33 through the flue 31, in addition, the air outlet of the induced draft fan 2 is connected with a plurality of groups of flues 31 in parallel, and each group of flues 31 is connected with one desulfurization tower 33, so that the desulfurization device 3 can be flexibly switched; and each group of flues 31 is provided with a valve 32, so that the flues 31 can be conveniently switched and controlled at any time through the valves 32, the process of manually separating the flues 31 and recovering the flues 31 is reduced, and the pollution of the surrounding air environment caused by the phenomenon that the flues 31 are not tightly smoked is avoided.

As shown in fig. 2, one end of the flue 31 connected to the flue inlet of the desulfurizing tower 33 is inclined, one end of the flue 31 far from the desulfurizing tower 33 is horizontally arranged, and the horizontal end of the flue 31 is higher than the flue inlet of the desulfurizing tower 33.

In this embodiment, through setting up flue 31 into horizontal segment and slope section, boiler 1 or draught fan 2 are connected to the horizontal segment, and the flue inlet of desulfurizing tower 33 is connected to the slope section to guarantee that the position of horizontal segment is higher than the height of slope section, be the contained angle setting between 31 one end of flue of connecting desulfurizing tower 33 inlet promptly and the desulfurizing tower 33, effectively avoid the flue gas backward flow in the desulfurizing tower 33.

As shown in fig. 2, a first nozzle 311 is provided in the obliquely installed flue 31, and the first nozzle 311 sprays the desulfurization solution into the flue 31.

In this embodiment, set up first nozzle 311 in the flue 31 of slope section to supply the doctor solution in first nozzle 311 through the pipeline, spray the doctor solution to the flue 31 of slope section through first nozzle 311 in, both can effectually reduce the sulphur in the flue gas, again will spray the doctor solution after through the flue 31 inflow desulfurizing tower 33 that the slope set up in, and discharge, structural design is simple and the effect of desulfurization has been increased.

As shown in fig. 2, a plurality of guide plates 331 are disposed in the desulfurization tower 33 and are uniformly staggered along the inner wall of the desulfurization tower 33, and the guide plates 331 are all inclined downward.

In this embodiment, through improving the inner structure of desulfurizing tower 33, fixed a plurality of guide plates 331 that set up along the direction of height is crisscross on the inner wall of desulfurizing tower 33 to with guide plate 331 downward sloping, the purpose that has played the water conservancy diversion to the flue gas that gets into in desulfurizing tower 33 is convenient for carry out operation on next step.

As shown in fig. 2, a second nozzle 332 is provided on the lower surface of the deflector 331, and the second nozzle 332 sprays the desulfurization solution into the desulfurization tower 33.

In this embodiment, the plurality of second nozzles 332 are disposed on the lower surface of the flow guide plate 331, and under the flow guide effect of the flow guide plate 331, the second nozzles 332 are disposed on the lower surface of the flow guide plate 331, so that the contact between the desulfurization solution sprayed by the second nozzles 332 and the flue gas is increased, and the desulfurization solution is sprayed layer by layer, so that the sulfur in the flue gas can be effectively removed, and the desulfurization efficiency of the desulfurization tower 33 is improved. The sprayed desulfurization solution can be guided to the bottom of the desulfurization tower 33 along the guide plate 331, so as to be convenient for collection. In addition, a corresponding dust removal device is arranged above the guide plate 331, and the flue gas is discharged after being subjected to dust removal.

As shown in fig. 2, the baffle 331 is disposed above the smoke inlet of the desulfurization tower 33.

In this embodiment, the guide plate 331 is disposed above the smoke inlet of the desulfurizing tower 33, and since the smoke enters the desulfurizing tower 33 and then goes upward, the guide plate 331 is disposed above the smoke inlet of the desulfurizing tower 33 to better guide the smoke.

The embodiments in the present specification are described in a progressive manner, and the same or similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments.

The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure.

Claims

1. A desulfurization system, comprising: the system comprises a boiler (1), an induced draft fan (2) and a plurality of desulphurization devices (3) which are arranged in parallel;

the smoke outlet of the boiler (1) is connected with the air suction inlet of the induced draft fan (2), and the desulphurization device (3) is connected with the air outlet of the induced draft fan (2);

the desulfurization device (3) comprises a flue (31), a valve (32) and a desulfurization tower (33), and an air outlet of the induced draft fan (2) is connected with a smoke inlet of the desulfurization tower (33) through the flue (31);

the valve (32) is arranged on the flue (31).

2. The desulfurization system according to claim 1, wherein one end of the flue (31) connected to the flue gas inlet of the desulfurization tower (33) is disposed obliquely, one end of the flue (31) away from the desulfurization tower (33) is disposed horizontally, and the horizontal end of the flue (31) is located higher than the flue gas inlet of the desulfurization tower (33).

3. The desulfurization system according to claim 2, wherein a first nozzle (311) is arranged in the obliquely arranged flue (31), and the first nozzle (311) sprays desulfurization liquid into the flue (31).

4. The desulfurization system of claim 1, wherein a plurality of baffles (331) are uniformly staggered along the inner wall of the desulfurization tower (33) and arranged in the desulfurization tower (33), and the baffles (331) are all inclined downwards.

5. The desulfurization system according to claim 4, wherein the lower surface of the deflector (331) is provided with a second nozzle (332), and the second nozzle (332) sprays desulfurization solution into the desulfurization tower (33).

6. The desulfurization system of claim 4, wherein said deflector (331) is disposed above a flue gas inlet of said desulfurization tower (33).