CN116474535A - Desulfurization and denitrification treatment system and treatment process - Google Patents

Desulfurization and denitrification treatment system and treatment process Download PDF

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Publication number
CN116474535A
CN116474535A CN202310494246.8A CN202310494246A CN116474535A CN 116474535 A CN116474535 A CN 116474535A CN 202310494246 A CN202310494246 A CN 202310494246A CN 116474535 A CN116474535 A CN 116474535A
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desulfurization
pipeline
absorption tower
tower
treatment system
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Inventor
杜鹏
杨尚建
王莉莉
庞丽娟
熊超
王康志
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/75—Multi-step processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/48—Sulfur compounds
    • B01D53/50—Sulfur oxides
    • B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
    • B01D53/504—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/80—Semi-solid phase processes, i.e. by using slurries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/8621—Removing nitrogen compounds
    • B01D53/8625—Nitrogen oxides
    • B01D53/8631—Processes characterised by a specific device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/90—Injecting reactants
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treating Waste Gases (AREA)

Abstract

The invention relates to the technical field of desulfurization and denitrification treatment, and discloses a desulfurization and denitrification treatment system and a treatment process, wherein the desulfurization and denitrification treatment system comprises a removal reaction mechanism and a connecting mechanism, the removal reaction mechanism is provided with two devices for sequentially carrying out desulfurization and denitrification treatment, and the removal reaction mechanism comprises an absorption tower, a reactant supply assembly and a diffusion assembly; the connecting mechanism comprises a third pipeline and a fifth pipeline which are respectively arranged on the two absorption towers, and the two absorption towers are communicated through the fourth pipeline; the reactant supply assembly comprises a storage tower, a pump is arranged on the storage tower, and a first pipeline is arranged on the pump; according to the desulfurization and denitrification treatment system and the treatment process, gas is used as power to drive the rotating rod in the absorption tower to conduct compound motion in the tower, reactant liquid drops are released through the injection holes on the surface of the rotating rod in the process, a sufficient dispersed phase is formed, the reactant liquid drops are in sufficient collision contact with continuous phase gas, and harmful substance residues are reduced through sufficient reaction.

Description

Desulfurization and denitrification treatment system and treatment process
Technical Field
The invention relates to the technical field of desulfurization and denitrification treatment, in particular to a desulfurization and denitrification treatment system and a treatment process.
Background
The desulfurization and denitrification treatment system is a system for purifying industrial exhaust smoke. The desulfurization treatment refers to the removal treatment of sulfur-containing components such as sulfur dioxide in industrial exhaust gas, for example, sulfur dioxide in coal-fired flue gas. The desulfurization treatment method is many, taking a common limestone-gypsum desulfurization process as an example, in which limestone powder is added with water to prepare slurry, the slurry is pumped into an absorption tower as a desulfurization reactant to be fully contacted and mixed with flue gas, and sulfur dioxide in the flue gas is oxidized with calcium carbonate in the slurry and air blown from the lower part of the tower to generate calcium sulfate.
The denitration treatment is similar in principle, namely the removal treatment of nitrogen oxides in industrial exhaust gas is similar in principle, and the nitrogen oxides are reduced into nitrogen and water in an absorption tower by using ammonia water, urea and the like as denitration reactants.
However, the existing desulfurization and denitrification treatment system generally sprays the reactant into the tower from one direction at the top of the tower only through a spraying system, the contact area between the gas and the liquid drops of the reactant is small, and part of the gas is discharged out of the tower without fully contacting the reactant, so that sulfur-containing and nitrogen oxide components remain.
In view of the above, the present invention provides a desulfurization and denitrification treatment system and treatment process to solve the above technical problems in the prior art.
Disclosure of Invention
The invention provides a desulfurization and denitrification treatment system and a treatment process, which have the beneficial effects that gas is used as power to drive a rotating rod in an absorption tower to make compound motion in the tower, reactant liquid drops are released through injection holes on the surface of the rotating rod in the process, a sufficient dispersed phase is formed, the reaction is fully collided and contacted with continuous phase gas, harmful substance residues are reduced through full reaction, the problems that the conventional desulfurization and denitrification treatment system in the background art generally sprays reactants into the tower from one direction only through a spraying system, the contact area of the liquid drops of the gas and the reactants is small, and part of gas is discharged out of the tower without fully contacting the reactants, so that sulfur-containing and nitrogen oxide components remain are solved.
The invention provides the following technical scheme: the desulfurization and denitrification treatment system comprises a removal reaction mechanism and a connecting mechanism, wherein the removal reaction mechanism is provided with two devices for sequentially carrying out desulfurization and denitrification treatment, and comprises an absorption tower, a reactant supply assembly and a diffusion assembly;
the connecting mechanism comprises a third pipeline and a fifth pipeline which are respectively arranged on the two absorption towers, and the two absorption towers are communicated through a fourth pipeline;
the reactant supply assembly comprises a storage tower, a pump is arranged on the storage tower, a first pipeline is arranged on the pump, and the two storage towers are respectively used for storing desulfurization reactants and denitration reactants;
the diffusion subassembly is including seting up in spout in the absorption tower, slide in the spout and be provided with hollow pole, hollow pole with first pipe connection, just a plurality of injection hole has been seted up on the hollow pole, be provided with a plurality of kicking block in the spout.
As an alternative to the desulfurization and denitrification treatment system of the present invention, the following is adopted: the hollow rods are symmetrically arranged in the absorption towers, second pipelines are arranged on the hollow rods, and the second pipelines are slidably arranged in the first pipelines.
As an alternative to the desulfurization and denitrification treatment system of the present invention, the following is adopted: the number of the top blocks is even, and the number of the top blocks is two, and the two top blocks in one group are symmetrically arranged in the absorption tower.
As an alternative to the desulfurization and denitrification treatment system of the present invention, the following is adopted: the removing reaction mechanism further comprises an auxiliary diffusion assembly and a driving assembly, wherein the auxiliary diffusion assembly comprises a rotary table which is rotatably arranged in the absorption tower, the rotary table is driven to rotate by the driving assembly, and two rotary drums are rotatably arranged on the rotary table;
the two hollow rods are respectively arranged in the two rotating drums in a sliding mode, first springs are arranged on the two rotating drums, and the two first springs are respectively connected with the inner walls of the two rotating drums.
As an alternative to the desulfurization and denitrification treatment system of the present invention, the following is adopted: the auxiliary diffusion assembly further comprises two gears which are respectively arranged on the two rotary drums, a gear ring is arranged in the absorption tower, and the gear ring and the two gears are meshed.
As an alternative to the desulfurization and denitrification treatment system of the present invention, the following is adopted: the driving assembly comprises an annular pipeline arranged on the absorption tower, a rotary groove is formed in the annular pipeline, a rotary block is arranged in the rotary groove in a sliding mode, a second pipeline is arranged on the rotary block in a sliding mode, and a pushing block is further arranged on the rotary block.
As an alternative to the desulfurization and denitrification treatment system of the present invention, the following is adopted: and a sixth pipeline and a seventh pipeline are arranged on the two annular pipelines, the two seventh pipelines are respectively connected with the two absorption towers, and the two sixth pipelines are respectively connected with the third pipeline and the fourth pipeline.
As an alternative to the desulfurization and denitrification treatment system of the present invention, the following is adopted: a catalyst supply assembly is additionally arranged in the removal reaction mechanism for denitration treatment, the catalyst supply assembly comprises a storage box arranged in the absorption tower, and a storage tank is arranged in the storage box and used for storing spherical catalyst;
the catalyst supply assembly further comprises a screen plate, and a plurality of round grooves formed in the screen plate are used for containing spherical catalysts.
As an alternative to the desulfurization and denitrification treatment system of the present invention, the following is adopted: the catalyst supply assembly further comprises a convex disc which is arranged on the storage box in a sliding manner, a plurality of convex blocks are arranged on the convex disc and correspond to a plurality of round grooves on the screen plate respectively, a second spring is arranged on the convex disc, and the second spring is connected with the inner wall of the storage box;
the screen plate is provided with connecting rods, and the two hollow rods are rotatably arranged on the connecting rods.
The invention also provides the following technical scheme: a treatment process of a desulfurization and denitrification treatment system comprises the following steps:
s1, injecting gas into an absorption tower through a third pipeline, pumping a desulfurization reactant in a storage tower into two hollow rods through a pump at the moment, and releasing the desulfurization reactant into the absorption tower through a plurality of injection holes to react with the gas to remove sulfur-containing components;
s2, at the same time of the step S1, gas in the third pipeline is shunted into the annular pipeline through the sixth pipeline, so that the two hollow rods are pushed to revolve around the inside of the absorption tower and rotate at the same time, and undulate up and down when passing through a plurality of top blocks, and a desulfurization reactant is enabled to form a disperse phase and a continuous phase gas reaction;
s3, after desulfurization treatment, the gas enters another absorption tower through a fourth pipeline, a denitration reactant in the other storage tower is injected into the other absorption tower through driving of the other pump, and the step S1 and the step S2 are repeated in the other absorption tower to carry out denitration treatment;
s4, continuously taking out and diffusing the spherical catalyst in the storage tank to the other absorption tower by the convex disc to participate in the reaction of the denitration reactant and the nitrogen oxide component in the gas in the step S3.
The invention has the following beneficial effects:
1. according to the desulfurization and denitrification treatment system and the treatment process, desulfurization and denitration treatment is carried out step by step through the two absorption towers. After the gas enters the absorption tower, the reactant liquid drops are thrown out through a plurality of injection holes on two hollow rods which move around in the absorption tower, and are released into the absorption tower. Compared with the traditional absorption tower, the liquid drops are sprayed from the tower top, so that the sprayed reactant liquid drops form a full dispersed phase, fully collide with the gas of the continuous phase, and complete the gas-liquid mixing contact for full reaction by utilizing various actions such as liquid impact, capturing, turbulence and the like, thereby improving the reaction efficiency and reducing the residues of sulfur-containing components and nitrogen oxides. Meanwhile, the hollow rod also plays a role in stirring gas and liquid drops in the absorption tower, so that the gas and the liquid drops are more fully collided and contacted.
2. According to the desulfurization and denitrification treatment system and the treatment process, the two hollow rods do not only rotate in the surrounding absorption tower, but also rotate at the same time, and the two hollow rods do disordered up-and-down fluctuation motion when passing through a plurality of top blocks which are arranged in disordered change in the surrounding motion process. Thereby further increasing the complexity of the motion of the gas-liquid system in the absorption tower and enabling the collision contact reaction to be more sufficient.
3. The desulfurization and denitrification treatment system and the treatment process are characterized in that the power for driving the hollow rod to move is derived from gas injection, and a driving system is not required to be additionally arranged. Splitting the non-desulfurization and denitrification gas or the desulfurization and non-denitrification gas in a third pipeline or a fourth pipeline to enter two annular pipelines, and forming a circulation in the annular pipelines to push the hollow rod to move; the cost of the device is saved.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is a schematic cross-sectional view of the present invention.
Fig. 3 is a partial enlarged view at a in fig. 2.
Fig. 4 is a partial enlarged view at B in fig. 2.
Fig. 5 is a partial enlarged view at C in fig. 2.
Fig. 6 is a schematic view of a first explosive structure according to the present invention.
Fig. 7 is a schematic diagram of a second explosive structure according to the present invention.
In the figure: 10. removing the reaction mechanism; 101. an absorption tower; 102. a reactant supply assembly; 1021. a storage tower; 1022. a pump machine; 1023. a first pipe; 103. a diffusion assembly; 1031. a chute; 1032. a hollow rod; 1033. an injection hole; 1034. a top block; 1035. a second pipe; 104. an auxiliary diffusion assembly; 1041. a turntable; 1042. a rotating drum; 1043. a gear; 1044. a gear ring; 1045. a first spring; 105. a drive assembly; 1051. an annular pipe; 1052. a rotary groove; 1053. a rotating block; 1054. a pushing block; 106. a catalyst supply assembly; 1061. a storage bin; 1062. a storage tank; 1063. a screen plate; 1064. a cam; 1065. a second spring; 1066. a connecting rod; 20. a connecting mechanism; 201. a third conduit; 202. a fourth conduit; 203. a fifth pipe; 204. a sixth conduit; 205. and a seventh pipeline.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The two removal reaction mechanisms 10 have the same structure, the desulfurization treatment is firstly carried out by the first removal reaction mechanism 10 on the left side, and then the denitration treatment is carried out by the second removal reaction mechanism 10 on the right side, so that reactants can form sufficient disperse phase and continuous phase gas collision contact in the desulfurization and denitration process, the reaction is fully carried out, the reaction efficiency is improved, the residue is reduced, and the embodiment 1 is provided;
referring to fig. 1-6, a desulfurization and denitrification treatment system includes a removal reaction mechanism 10 and a connection mechanism 20, wherein the removal reaction mechanism 10 is provided with two desulfurization and denitrification treatments for sequential use, and the removal reaction mechanism 10 includes an absorption tower 101, a reactant supply assembly 102 and a diffusion assembly 103;
the connection mechanism 20 includes a third pipe 201 and a fifth pipe 203 respectively provided on the two absorption towers 101, and the two absorption towers 101 are communicated through a fourth pipe 202;
the reactant supply assembly 102 comprises a storage tower 1021, a pump 1022 is arranged on the storage tower 1021, a first pipeline 1023 is arranged on the pump 1022, and the two storage towers 1021 are respectively used for storing desulfurization reactants and denitration reactants;
the diffusion component 103 comprises a chute 1031 arranged in the absorption tower 101, a hollow rod 1032 is slidably arranged in the chute 1031, the hollow rod 1032 is connected with the first pipeline 1023, a plurality of injection holes 1033 are formed in the hollow rod 1032, and a plurality of top blocks 1034 are arranged in the chute 1031.
In this embodiment: a temperature control system, a pressure control system and the like can be arranged in the two absorption towers 101 to provide different reaction conditions for desulfurization and denitrification reactions. The two storage towers 1021 store desulfurization reactant and denitration reactant respectively, and both are in liquid or solution form.
An annular chute 1031 is formed in the bottom wall of the absorption tower 101, a hollow rod 1032 is slidably mounted in the chute 1031, a cavity is formed in the hollow rod 1032, and a plurality of injection holes 1033 are formed in the surface of the hollow rod 1032 and communicated with the cavity. After the gas enters the absorption tower 101 through the third pipeline 201, the reactant in the storage tower 1021 is pumped into the first pipeline 1023 through the pump 1022 and then enters the hollow rod 1032, and is diffused and released into the absorption tower 101 through the plurality of injection holes 1033 to react with the gas.
In this process, the reactants are released while moving circumferentially along the inside of the chute 1031 through the hollow rod 1032 and undulate up and down as they pass through the plurality of top blocks 1034, thereby allowing the reactants to diffuse more fully.
Example 2
Example 2 was proposed to make the release movement of the reactants more complex, thereby increasing the complexity of the movement of the gas-liquid system in the absorber column 101, more severe and sufficient collision contact;
in this embodiment, as shown in fig. 2 to 6, two hollow rods 1032 are provided, the two hollow rods 1032 are symmetrically disposed in the absorption tower 101, the two hollow rods 1032 are provided with second pipes 1035, and the second pipes 1035 are slidably disposed in the first pipes 1023;
the number of the top blocks 1034 is even, and the number of the top blocks 1034 is two, and the two top blocks 1034 in one group are symmetrically arranged in the absorption tower 101.
In this embodiment: the hollow bar 1032 is first symmetrically provided with two based on the midpoint of the absorption tower 101 to increase the number of injection holes 1033 and simultaneously release the coverage of the liquid droplets. The second pipe 1035 is a three-way pipe, two ends of the second pipe 1035 are respectively fixed with the two injection holes 1033, and the other end of the second pipe 1035 is slidably arranged in a port of the first pipe 1023, so that the second pipe 1035 can slide and rotate, and a sealing mechanism can be additionally arranged to ensure tightness.
The top blocks 1034 are arranged in groups of two, wherein two top blocks 1034 of a group are symmetrically arranged based on the middle point of the absorption tower 101, and a plurality of groups of top blocks 1034 are arranged in disorder. The heave of the two hollow bars 1032 is changed to a random motion, thereby increasing the complexity of the gas-liquid motion system in the absorber 101.
Example 3
In order to make the release movement of the reactants more complicated, thereby increasing the complexity of the movement of the gas-liquid system in the absorption column 101, more severe and sufficient collision contact, example 3 was proposed;
in this embodiment, an improvement is described based on embodiment 2, specifically referring to fig. 1-6, the removal reaction mechanism 10 further includes an auxiliary diffusion component 104 and a driving component 105, the auxiliary diffusion component 104 includes a turntable 1041 rotatably disposed in the absorption tower 101, the turntable 1041 is driven to rotate by the driving component 105, and two drums 1042 are rotatably disposed on the turntable 1041;
the two hollow rods 1032 are respectively and slidably arranged in the two rotary drums 1042, the two rotary drums 1042 are provided with first springs 1045, and the two first springs 1045 are respectively connected with the inner walls of the two rotary drums 1042;
the auxiliary diffusing assembly 104 further includes two gears 1043 disposed on the two drums 1042, respectively, a gear ring 1044 is disposed in the absorption tower 101, and the gear ring 1044 is engaged with the two gears 1043.
In this embodiment: a turntable 1041 is rotatably installed on the inner wall of the absorption tower 101, two drums 1042 are symmetrically rotatably installed on the turntable 1041, and two injection holes 1033 slide along the two drums 1042 respectively and are elastically connected with the two drums 1042 through two first springs 1045. The turntable 1041 also functions to seal the top cover portion of the absorption tower 101.
A gear 1043 is fixed to each of the two drums 1042, and a ring gear 1044 is fixed to the inner wall of the absorption tower 101. When the driving assembly 105 drives the turntable 1041 to rotate, the two hollow rods 1032 are driven to move along the chute 1031, and the gear 1043 is meshed with the gear ring 1044 to rotate. The diffusion is more uniform than a simple surround release droplet.
Example 4
If a power system is additionally arranged to drive the hollow rod 1032 to move, the overall operation cost of the system is obviously increased, and an embodiment 4 is provided for solving the problems;
in this embodiment, as described in the improvement made on the basis of embodiment 3, referring specifically to fig. 1-6, the driving assembly 105 includes an annular pipe 1051 disposed on the absorption tower 101, a rotary slot 1052 is formed on the annular pipe 1051, a rotary block 1053 is slidably disposed in the rotary slot 1052, a second pipe 1035 is slidably disposed on the rotary block 1053, and a pushing block 1054 is further disposed on the rotary block 1053;
the two annular pipes 1051 are each provided with a sixth pipe 204 and a seventh pipe 205, the two seventh pipes 205 are connected to the two absorption towers 101, and the two sixth pipes 204 are connected to the third pipe 201 and the fourth pipe 202, respectively.
In this embodiment: the annular pipe 1051 is installed at the top end of the absorption tower 101, and the annular pipe 1051 is annular. An annular rotary groove 1052 is formed in the upper end of the rotary groove 1052, a rotary block 1053 is rotatably installed in the rotary groove 1052, and a pushing block 1054 fixed at the lower end of the rotary block 1053 is positioned in the annular pipeline 1051 to play a role in pushing.
The connection parts of the second pipes 1035 and the rotating block 1053 are rectangular, and can slide up and down under the condition of not influencing the rotation of the rotating block.
A part of the gas which is not desulfurized and denitrified in the third pipeline 201 is shunted into the left sixth pipeline 204 and then into the left annular pipeline 1051 to push the left two hollow rods 1032 to move, and after forming a circle of circulation, the gas is injected into the left absorption tower 101 through the left seventh pipeline 205.
The desulphurised gas then enters the fourth conduit 202 and splits into the right sixth conduit 204 and the annular conduit 1051, likewise driving the right two hollow bars 1032 in motion. And then injected into the right absorption tower 101 through the right seventh pipe 205.
Example 5
In the denitration method, SCR is a common technology, and a reducing agent (NH 3, urea) is used to react with NOx selectively under the action of a metal catalyst to generate N2 and H2O, instead of being oxidized by O2. Has the advantages of high denitration efficiency and relatively low price. However, the disadvantage is that the catalyst is susceptible to failure due to temperature changes and the like. Example 5 is proposed for this purpose;
in this embodiment, as shown in fig. 1 to 7, a catalyst supply assembly 106 is additionally arranged in a removal reaction mechanism 10 for performing denitration treatment, the catalyst supply assembly 106 includes a storage tank 1061 disposed in an absorption tower 101, and a storage tank 1062 is provided in the storage tank 1061 for storing spherical catalyst;
the catalyst supply assembly 106 further comprises a mesh plate 1063, and a plurality of round grooves formed in the mesh plate 1063 are used for containing spherical catalysts;
the catalyst supply assembly 106 further comprises a convex disc 1064 slidably arranged on the storage tank 1061, wherein a plurality of convex blocks are arranged on the convex disc 1064 and respectively correspond to a plurality of round grooves on the screen plate 1063, a second spring 1065 is arranged on the convex disc 1064, and the second spring 1065 is connected with the inner wall of the storage tank 1061;
the net plate 1063 is provided with a connecting rod 1066, and two hollow rods 1032 are rotatably disposed on the connecting rod 1066.
In this embodiment: the bottom of the storage box 1061 is an air cavity, and the side wall is provided with a storage tank 1062 which is communicated with the air cavity. The catalyst is selected to be spherical, increases the reaction contact area, and is stored in the storage tank 1062, rather than being released into the absorber 101 at one time, increasing the utilization.
Two hollow bars 1032 are rotatably mounted on the connecting bar 1066 and are rotatable to drive the connecting bar 1066 up and down. A mesh plate 1063 is fixed to the lower end of the connecting rod 1066, and a plurality of holes on the mesh plate 1063 are used for containing the spherical catalyst.
As the up-and-down motion, the mesh plate 1063 contacts the cam 1064 downward, and the cam 1064 pushes the catalyst existing on the mesh plate 1063 upward to participate in the reaction. The mesh plate 1063 continues to push the cam 1064 downward so that the gas in the tank 1061 compresses to push the catalyst up in the tank 1062. Knowing that the mesh plate 1063 moves downward to a position where it communicates with the upper side of the storage tank 1062 and the inner wall of the storage tank 1061.
And then a part of the spherical catalyst is supported and then rises. This process is repeated to increase catalyst utilization.
Example 6
The invention also provides a treatment process of the desulfurization and denitrification treatment system;
specifically, referring to fig. 1-7, the method includes the following steps:
s1, injecting gas into the absorption tower 101 through a third pipeline 201, pumping desulfurization reactant in a storage tower 1021 into two hollow rods 1032 through a pump 1022, and releasing the desulfurization reactant into the absorption tower 101 through a plurality of injection holes 1033 to react with the gas to remove sulfur-containing components;
s2, at the same time of the step S1, gas in the third pipeline 201 is shunted into the annular pipeline 1051 through the sixth pipeline 204, so that the two hollow rods 1032 are pushed to revolve around the inside of the absorption tower 101 and rotate at the same time, and undulate up and down when passing through the plurality of top blocks 1034, thereby enabling the desulfurization reactant to form a disperse phase and a continuous phase gas reaction;
s3, after desulfurization treatment, gas enters the other absorption tower 101 through a fourth pipeline 202, a denitration reactant in the other storage tower 1021 is driven by the other pump 1022 to be injected into the other absorption tower 101, and the step S1 and the step S2 are repeated in the other absorption tower 101 to carry out denitration treatment;
s4, at the same time of the step S3, the convex plate 1064 continuously takes out and diffuses the spherical catalyst in the storage tank 1062 to the other absorption tower 101 to participate in the reaction of the denitration reactant and the nitrogen oxide component in the gas.
It is noted that relational terms such as first and second, and the like are 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. Moreover, 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.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the scope of the invention.

Claims (9)

1. A desulfurization and denitrification treatment system is characterized in that: the desulfurization and denitration device comprises a removal reaction mechanism (10) and a connecting mechanism (20), wherein the removal reaction mechanism (10) is provided with two devices for desulfurization and denitration treatment in sequence, and the removal reaction mechanism (10) comprises an absorption tower (101), a reactant supply assembly (102), a diffusion assembly (103), an auxiliary diffusion assembly (104) and a driving assembly (105);
the connecting mechanism (20) comprises a third pipeline (201) and a fifth pipeline (203) which are respectively arranged on the two absorption towers (101), and the two absorption towers (101) are communicated through a fourth pipeline (202);
the reactant supply assembly (102) comprises a storage tower (1021), a pump (1022) is arranged on the storage tower (1021), a first pipeline (1023) is arranged on the pump (1022), and the two storage towers (1021) are respectively used for storing desulfurization reactants and denitration reactants;
the diffusion assembly (103) comprises a chute (1031) arranged in the absorption tower (101), a hollow rod (1032) is arranged in the chute (1031) in a sliding mode, the hollow rod (1032) is connected with the first pipeline (1023), a plurality of injection holes (1033) are formed in the hollow rod (1032), and a plurality of top blocks (1034) are arranged in the chute (1031);
the auxiliary diffusion assembly (104) comprises a rotary table (1041) rotatably arranged in the absorption tower (101), the rotary table (1041) is driven to rotate by the driving assembly (105), and two rotary drums (1042) are rotatably arranged on the rotary table (1041);
the two hollow rods (1032) are respectively arranged in the two rotary drums (1042) in a sliding mode, first springs (1045) are arranged on the two rotary drums (1042), and the two first springs (1045) are respectively connected with the inner walls of the two rotary drums (1042).
2. The desulfurization and denitrification treatment system according to claim 1, wherein: the two hollow rods (1032) are symmetrically arranged in the absorption tower (101), the two hollow rods (1032) are provided with second pipelines (1035), and the second pipelines (1035) are slidably arranged in the first pipelines (1023).
3. The desulfurization and denitrification treatment system according to claim 1, wherein: the number of the top blocks (1034) is even, the number of the top blocks (1034) is two, the top blocks (1034) are in a group, and the two top blocks (1034) in the group are symmetrically arranged in the absorption tower (101).
4. A desulfurization and denitrification treatment system according to claim 3, wherein: the auxiliary diffusion assembly (104) further comprises two gears (1043) respectively arranged on the two rotary drums (1042), a gear ring (1044) is arranged in the absorption tower (101), and the gear ring (1044) is meshed with the two gears (1043).
5. A desulfurization and denitrification treatment system according to claim 3, wherein: the driving assembly (105) comprises an annular pipeline (1051) arranged on the absorption tower (101), a rotary groove (1052) is formed in the annular pipeline (1051), a rotary block (1053) is arranged in the rotary groove (1052) in a sliding mode, a second pipeline (1035) is arranged on the rotary block (1053) in a sliding mode, and a pushing block (1054) is further arranged on the rotary block (1053).
6. The desulfurization and denitrification treatment system according to claim 5, wherein: the two annular pipelines (1051) are respectively provided with a sixth pipeline (204) and a seventh pipeline (205), the two seventh pipelines (205) are respectively connected with the two absorption towers (101), and the two sixth pipelines (204) are respectively connected with the third pipeline (201) and the fourth pipeline (202).
7. The desulfurization and denitrification treatment system according to claim 2, wherein: a catalyst supply assembly (106) is additionally arranged in the removal reaction mechanism (10) for denitration treatment, the catalyst supply assembly (106) comprises a storage box (1061) arranged in the absorption tower (101), and a storage groove (1062) is formed in the storage box (1061) and used for storing spherical catalysts;
the catalyst supply assembly (106) further comprises a screen plate (1063), and a plurality of round grooves formed in the screen plate (1063) are used for containing spherical catalysts.
8. The desulfurization and denitrification treatment system according to claim 7, wherein: the catalyst supply assembly (106) further comprises a convex disc (1064) arranged on the storage box (1061) in a sliding manner, a plurality of convex blocks are arranged on the convex disc (1064) and correspond to a plurality of round grooves on the screen plate (1063) respectively, a second spring (1065) is arranged on the convex disc (1064), and the second spring (1065) is connected with the inner wall of the storage box (1061);
the screen plate (1063) is provided with a connecting rod (1066), and the two hollow rods (1032) are rotatably arranged on the connecting rod (1066).
9. The process of any one of claims 1 to 8, comprising the steps of:
s1, injecting gas into an absorption tower (101) through a third pipeline (201), pumping desulfurization reactant in a storage tower (1021) into two hollow rods (1032) through a pump (1022) at the moment, and releasing the desulfurization reactant into the absorption tower (101) through a plurality of injection holes (1033) to react with the gas to remove sulfur-containing components;
s2, during the step S1, gas in the third pipeline (201) is shunted into the annular pipeline (1051) through the sixth pipeline (204), and the two hollow rods (1032) are pushed to revolve around the inside of the absorption tower (101) and rotate at the same time, and undulate up and down when passing through a plurality of top blocks (1034), so that a desulfurization reactant forms a disperse phase and a continuous phase gas reaction;
s3, after desulfurization treatment, gas enters the other absorption tower (101) through a fourth pipeline (202), a denitration reactant in the other storage tower (1021) is driven by the other pump (1022) to be injected into the other absorption tower (101), and the step S1 and the step S2 are repeated in the other absorption tower (101) to carry out denitration treatment;
s4, at the same time of the step S3, the convex plate (1064) continuously takes out and diffuses the spherical catalyst in the storage tank (1062) to the other absorption tower (101) to participate in the reaction of the denitration reactant and the nitrogen oxide component in the gas.
CN202310494246.8A 2023-05-05 2023-05-05 Desulfurization and denitrification treatment system and treatment process Pending CN116474535A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117101383A (en) * 2023-08-26 2023-11-24 秦强 Desulfurization and denitrification equipment and process thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117101383A (en) * 2023-08-26 2023-11-24 秦强 Desulfurization and denitrification equipment and process thereof
CN117101383B (en) * 2023-08-26 2024-03-05 唐山鹏淏环保设备有限公司 Desulfurization and denitrification equipment and process thereof

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