CN211612186U

CN211612186U - Sulfur dioxide preparation system with absorption process

Info

Publication number: CN211612186U
Application number: CN202020099834.3U
Authority: CN
Inventors: 黄平
Original assignee: Guangxi Qingchang Technology Development Co ltd
Current assignee: Guangxi Qingchang Technology Development Co ltd
Priority date: 2020-01-17
Filing date: 2020-01-17
Publication date: 2020-10-02
Anticipated expiration: 2030-01-17

Abstract

The utility model discloses a sulfur dioxide preparation system with absorption process, which comprises a sulfur dioxide generator, wherein the sulfur dioxide generator generates SO₂The gas passes through a jet mixing absorber and SO in sequence₂The spray absorption tower and the tail gas spray absorption tower are used for absorption. Also comprises a jet mixing absorber for absorbing SO flowing through by the absorption solution₂The gas is absorbed and the absorption solution is removed from SO₂Spray absorption tower internal pumpAnd (6) taking. Also includes SO₂Spraying absorption tower to absorb SO flowing through by absorption solution₂The gas is absorbed, and the absorption solution is pumped from the spray absorption tower. Also comprises a tail gas spraying absorption tower which is used for absorbing SO flowing through by absorption solution₂The gas is absorbed and the absorption solution is pumped from the circulation tank. Also comprises a circulating pool for receiving the SO absorbed by the jet mixing absorber₂Absorbing solution after gas and providing new absorbing solution for the tail gas spraying absorption tower. The technical scheme of the utility model provides the SO is improved₂The absorption efficiency of the gas.

Description

Sulfur dioxide preparation system with absorption process

Technical Field

The utility model relates to a sulfur dioxide preparation technical field, in particular to sulfur dioxide preparation system of area absorption technology.

Background

In the traditional process, a sulfur dioxide preparation system and various absorption processes are operated independently, the process technology is relatively backward, and the absorption mode is mostly a monopole soaking type or spraying/sprinkling type absorption process. The common method is single-phase absorption, incomplete absorption, low absorption efficiency, excessive SO2 emission and environmental pollution.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims at providing a take absorption process's sulfur dioxide preparation system aims at solving the gaseous absorption inefficiency of SO2, leads to the gaseous emission of SO2 problem that exceeds standard.

In order to achieve the above object, the utility model provides a sulfur dioxide preparation system of area absorption technology, its characterized in that includes:

a sulfur dioxide generator that generates SO₂The gas passes through a jet mixing absorber and SO in sequence₂Absorbing by a spray absorption tower and a tail gas spray absorption tower;

jet mixing absorber for absorbing SO flowing through by absorption solution₂The gas is absorbed and the absorption solution is removed from SO₂Pumping in a spray absorption tower;

SO₂spraying absorption tower to absorb SO flowing through by absorption solution₂Absorbing the gas, and pumping the absorption solution from the spray absorption tower;

tail gas spraying absorption tower for absorbing SO flowing through by absorption solution₂Absorbing the gas, and pumping the absorption solution from the circulating pool;

a circulation tank for receiving the SO absorbed by the jet mixing absorber₂Absorbing solution after gas and providing new absorbing solution for the tail gas spraying absorption tower.

Preferably, the sulfur dioxide generator comprises a sulfur burning main body, and a sight glass and/or an access hole are/is arranged on the sulfur burning main body.

Preferably, the SO₂The material of the spray absorption tower and/or the tail gas spray absorption tower is 316L stainless steel plate;

the SO₂And anticorrosive paint is sprayed inside the spray absorption tower and/or the tail gas spray absorption tower.

Preferably, the tail gas sprays the absorption tower and includes the tower body, seted up liquid discharge port on the bottom lateral wall of tower body, the bottom in the tower body is provided with slope drainage structure, the liquid discharge port is located slope drainage structure's downward sloping one side.

Preferably, the inside of slope drainage structure is provided with the motor, the drive shaft of motor upwards stretches out slope drainage structure, install the stirring structure on the drive shaft.

Preferably, a plurality of spraying structures are arranged in the tail gas spraying absorption tower, and are sequentially distributed in the vertical direction;

wherein, part of the spraying structures are alternatively inclined towards the side walls of the two sides.

The application realizes SO by arranging a sulfur dioxide generator₂And (4) producing gas. Meanwhile, a jet mixing absorber and SO are arranged at the downstream of the sulfur dioxide generator₂Spray absorption tower and tail gas spray absorption tower to SO₂The gas is absorbed three times. Thus, in three SO₂SO in tail gas after gas absorption₂The gas content is low, and the emission standard is reached. That is, it can be understood that the system is a set SO₂The gas production and absorption are integrated, thereby not only facilitating the industrial production, but also effectively ensuring the emission standard of tail gas.

Drawings

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

FIG. 1 is a schematic structural view of an embodiment of a sulfur dioxide production system with absorption process according to the present invention;

FIG. 2 shows SO in the sulfur dioxide preparation system with absorption process of the present invention₂A process flow diagram of production and absorption;

FIG. 3 is a schematic diagram of the sulfur dioxide generator of FIG. 1;

FIG. 4 is a cross-sectional view of an embodiment of the tail gas spray absorber of FIG. 1;

fig. 5 is a cross-sectional view of another embodiment of the tail gas spray absorber of fig. 1.

The reference numbers illustrate:

the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

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 efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B" including either scheme A, or scheme B, or a scheme in which both A and B are satisfied. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a take sulfur dioxide preparation system of absorption technology when aiming at producing sulfur dioxide, absorbs through the multilayer and improves sulfur dioxide absorption efficiency, reaches sulfur dioxide emission standard.

Referring to fig. 1 and 2, fig. 1 is a schematic structural diagram of a sulfur dioxide preparation system 100 with absorption process of the present invention, and fig. 2 is SO₂A process flow chart of production and absorption.

As shown in FIG. 1, the sulfur dioxide production system with absorption process comprises a sulfur dioxide generator 110, a jet mixing absorber (mainly comprising a Venturi ejector 120, a mixing box and the like 130), and SO₂A spray absorption tower 140, a tail gas spray absorption tower 150, a circulating pool 160, a water pump 170 and the like. Sulfur dioxide generator for generating SO₂The outlet of the gas generated by the sulfur dioxide generator is communicated with the jet mixing absorber through a pipeline.

The jet mixing absorber is a vacuum obtaining device which uses fluid to transfer energy and mass and is based on a Venturi ejector 120, a process water flow with certain pressure is sprayed out through a nozzle, the pressure energy is converted into velocity energy due to the extremely high flow rate of the sprayed water, the pressure in an air suction area is reduced to generate vacuum, and SO2 gas in a pipeline is introduced into a mixing box 130 to be mixed and absorbed. The venturi ejector 120 receives SO generated from the sulfur dioxide generator 110₂Gas, and SO from the SO by water pump 170₂Spray mistPumping the absorption solution in the absorption tower, and further pumping SO in the pipeline through the absorption solution₂The gas is introduced into the mixing box 130 for mixing and absorption. The mixed and absorbed absorption solution is discharged into the circulation tank 160.

SO₂The lower portion of the spray absorption tower 140 is in communication with the mixing tank 130 through a gas pipe. SO (SO)₂The lower portion of the spray absorption tower 140 also communicates with the top of the venturi ejector 120 through a liquid pipe, and a water pump 170 is provided on the liquid pipe. From this, the SO remaining in the mixing tank 130 is known₂Gas flows into SO through gas pipeline₂The spray absorber 140 performs the next absorption. While the absorption solution received by venturi eductor 120 is SO-derived via water pump 170₂The bottom of the spray absorber tower 140 is drawn.

SO₂The upper part of the spray absorption tower 140 is communicated with the lower part of the tail gas spray absorption tower 150 through a gas pipeline (a fan can be arranged on the gas pipeline), and the SO is simultaneously used₂The upper part of the spray absorption tower 140 is also communicated with the lower part of the tail gas spray absorption tower 150 through a liquid pipeline, and a water pump 170 is arranged on the liquid pipeline. It can thus be understood that SO₂SO remaining in the spray absorption tower 140₂The gas flows into the tail gas spray absorption tower 150 through the gas pipeline for the final absorption. And SO₂The absorption solution received by the spray absorption tower 140 is drawn from the bottom of the tail gas spray absorption tower 150 by a water pump 170.

The top of the tail gas spray absorption tower 150 is provided with a tail gas discharge port, and SO is carried out through the tail gas spray absorption tower₂And after the gas is absorbed, discharging the tail gas reaching the standard. The upper part of the tail gas spray absorption tower 150 is communicated to the circulation tank 160 through a liquid pipeline, and a water pump 170 is also arranged on the liquid pipeline. Therefore, the new absorption solution in the circulation tank 160 is pumped into the tail gas spray absorption tower 150 by the water pump 170 to absorb the SO₂The gas is absorbed.

Referring to FIG. 2, the SO generated by the sulfur dioxide generator₂The gas sequentially passes through a jet mixing absorber and SO₂The spray absorption tower and the tail gas spray absorption tower are used for absorption. In addition, theIn the absorption process, the absorption solution is pumped to the tail gas spraying absorption tower from the circulating tank through the water pump in sequence and then pumped to the SO through the water pump₂After the absorption tower is sprayed, the mixture is pumped to a spray mixing absorber through a water pump. Thus, SO₂The gas passes through the SO after being absorbed once by the absorption solution when passing through the jet mixing absorber₂And in the process of spraying the absorption tower, after secondary absorption is carried out through the absorption solution, tertiary absorption is carried out through the tail gas spraying absorption tower.

Therefore, the present application realizes SO by providing the sulfur dioxide generator 110₂And (4) producing gas. Meanwhile, a jet mixing absorber and SO are arranged at the downstream of the sulfur dioxide generator 110₂Spray absorber 140 and tail gas spray absorber 150 for SO₂The gas is absorbed three times. Thus, in three SO₂SO in tail gas after gas absorption₂The gas content is low, and the emission standard is reached. That is, it can be understood that the system is a set SO₂The gas production and absorption are integrated, thereby not only facilitating the industrial production, but also effectively ensuring the emission standard of tail gas.

Referring to fig. 3, the sulfur dioxide generator includes a sulfur burning body 111, a roots blower 112 and a control cabinet 113. The roots blower 112 supplies oxygen to the sulfur burning body 111, and the control cabinet 113 controls the sulfur burning body 111. In particular, the sulfur burning main body 111 is provided with a sight glass 114 and/or an access opening 115. The sight glass 114 is provided to facilitate the user's observation of the operation of the sulfur burning body 111. And the maintenance opening 115 is arranged, so that a user can directly maintain the inside of the sulfur burning main body 111 through the maintenance opening 115 without disassembling the whole sulfur burning main body 111.

Further, consider SO₂Gas and absorption solution to SO₂The spray absorption tower and the tail gas spray absorption tower are internally corroded. Thus, in said SO₂The material of the spray absorption tower and/or the tail gas spray absorption tower is 316L stainless steel plate so as to improve the corrosion resistance of the spray absorption tower and/or the tail gas spray absorption tower.

Furthermore, in order to obtain more corrosion resistance, SO in SO₂The spraying absorption tower and/or the tail gas spraying absorption tower are/is internally sprayed with anticorrosive paint.

In another embodiment, referring to fig. 4, the tail gas spray absorption tower 150 includes a tower body 151, a liquid outlet K is disposed on a bottom side wall of the tower body 151, an inclined flow guide structure 152 is disposed at a bottom inside the tower body 151, and the liquid outlet K is located on a downward-inclined side of the inclined flow guide structure 152. It can be understood that, by providing the inclined flow guide structure 152, the absorption liquid discharged into the tail gas spray absorption tower 150 is guided, and is effectively discharged from the liquid discharge port K on the tower body 151. Wherein the inclined drainage structure 152 is preferably made of concrete.

Furthermore, in order to spray the tail gas with the absorption solution and SO in the absorption tower₂The gas is more fully fused, so a motor (not marked in the figure) is arranged in the inclined drainage structure, the driving shaft of the motor extends upwards out of the inclined drainage structure 152, and a stirring structure 153 is arranged on the driving shaft. Therefore, the stirring structure 153 stirs the absorption solution in the tail gas spray absorption tower 150, and improves the absorption solution and the SO therein₂The degree of fusion of the gases. In addition, the motor is disposed in the inclined flow-guiding structure 152 to avoid corrosion.

In another embodiment, referring to fig. 5, a plurality of spraying structures 154 are disposed in the tail gas spraying absorption tower 150, and the plurality of spraying structures 154 are sequentially distributed in the vertical direction; wherein, part of the spraying structures 154 are alternatively inclined to the two side walls. It should be noted here that the absorption solution is sprayed from the spray structure 154 in the exhaust gas spray absorption tower 150 when the absorption solution is sprayed from the circulation tank 160 to the exhaust gas spray absorption tower 150. And SO₂The gas enters the tail gas spray absorption tower 150 from the bottom of the tail gas spray absorption tower 150, SO the SO is sprayed by the gas₂The gas is absorbed and discharged from the liquid discharge port K, and then pumped to SO by the water pump 170₂ Spray absorber tower 140.

Therefore, in the spraying process of the absorption solution, in order to fully spray the whole inner cavity of the tail gas spraying absorption tower 150, part of the spraying structures 154 are alternately inclined towards the side walls of the two sides, so that the spraying area of the absorption solution is increased, and the tail gas spraying absorption tower is prevented from generating a spraying blind area.

Of course, SO₂The spray absorption tower 140 may be provided in this manner.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A sulfur dioxide preparation system with an absorption process is characterized by comprising:

2. The sulfur dioxide production system with absorption process as claimed in claim 1, wherein the sulfur dioxide generator comprises a sulfur burning body, and the sulfur burning body is provided with a sight glass and/or a service opening.

3. The sulfur dioxide production system with absorption process as claimed in claim 1, wherein said SO is₂The material of the spray absorption tower and/or the tail gas spray absorption tower is 316L stainless steel plate;

4. The sulfur dioxide preparation system with absorption process as claimed in claim 1, wherein the tail gas spray absorption tower comprises a tower body, a liquid outlet is arranged on the side wall of the bottom of the tower body, an inclined flow guiding structure is arranged at the bottom in the tower body, and the liquid outlet is positioned at the downward inclined side of the inclined flow guiding structure.

5. The sulfur dioxide production system with absorption process as claimed in claim 4, wherein the inclined diversion structure is internally provided with a motor, a driving shaft of the motor extends upwards out of the inclined diversion structure, and the driving shaft is provided with a stirring structure.

6. The sulfur dioxide production system with absorption process according to claim 4 or 5, wherein a plurality of spraying structures are arranged in the tail gas spraying absorption tower, and the plurality of spraying structures are sequentially distributed in the vertical direction;