CN216321103U - Vertical reactor for sodium-based dry desulphurization - Google Patents
Vertical reactor for sodium-based dry desulphurization Download PDFInfo
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- CN216321103U CN216321103U CN202122952393.4U CN202122952393U CN216321103U CN 216321103 U CN216321103 U CN 216321103U CN 202122952393 U CN202122952393 U CN 202122952393U CN 216321103 U CN216321103 U CN 216321103U
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Abstract
The utility model relates to the field of dry desulphurization, in particular to a vertical sodium-based dry desulphurization reactor. The desulfurization vertical reactor comprises a reaction outer tube and a reaction inner tube, wherein the reaction inner tube is sleeved inside the reaction outer tube, a plurality of guide plates are arranged between the reaction outer tube and the reaction inner tube along the axis direction of the reaction outer tube, and the adjacent guide plates are arranged in a staggered manner, so that airflow forms an S-shaped trend in the reaction outer tube. The bottom side of the reaction outer tube is provided with a smoke outlet which is communicated with a smoke buffer tube with a powder collecting hopper at the bottom, and the reaction outer tubeThe lower sealing plate is provided with a purging nozzle at the upper edge of one side far away from the smoke outlet. The improved vertical desulfurization reactor can ensure that the flue gas and the desulfurizer are mixed more uniformly, and improve SO2Can also automatically clean the particles deposited in the reactor, and prevent the inside of the reactor from being blocked by the particles.
Description
Technical Field
The utility model relates to the field of dry desulphurization, in particular to a vertical sodium-based dry desulphurization reactor.
Background
The dry desulfurization is that superfine sodium bicarbonate powder is used as a desulfurizing agent, and the high-activity Na is decomposed from the sodium bicarbonate powder under the action of high-temperature flue gas under the condition that the flue gas temperature is higher than 140 DEG C2CO3And CO2(ii) a Highly active Na2CO3With SO in flue gas in the flue2Other acid media are fully contacted to generate chemical reaction and then are absorbed and purified, and a sodium-based dry desulphurization process is adopted, which is abbreviated as SDS and SO2The removal efficiency is greater than 90%.
The desulfurization reactor is mostly of a straight cylinder type structure, and in the prior art, the reaction time between the desulfurizing agent and the flue gas is usually increased by increasing the length of the reactor, so that the problems of large occupied area of equipment, high investment cost, unreasonable layout and the like are caused; moreover, because the structural design of the reactor is unreasonable and the necessary diversion measures are lacked, the flow direction and the retention time of the flue gas in the reactor are not controlled, thereby further influencing the SO2The removal efficiency of (2); desulfurizing agent and SO2The reaction product and the desulfurizer are solid particles, so that the solid particles can be settled in the reactor, and if the solid particles are not cleaned in time, the reactor can be blocked.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model provides a vertical sodium-based dry desulphurization reactor, wherein the main body of the reactor adopts an inner sleeve type structure and an outer sleeve type structure, and a flow guide device and a deposited particle cleaning device are additionally arranged in the reactor, so that the reaction efficiency can be effectively improved, and the cleaning difficulty of the reactor can be reduced.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the sodium-based dry desulfurization vertical reactor comprises a reaction outer tube and a reaction inner tube, wherein the top of the reaction outer tube is plugged by a top cover, the bottom of the reaction outer tube is plugged by a lower sealing plate, and the reaction outer tubeAnd a smoke outlet is formed in one side of the side wall, which is close to the lower sealing plate. The two ends of the reaction inner tube are open, one end of the reaction inner tube penetrates through the lower sealing plate and is sleeved in the reaction outer tube, and the other end of the reaction inner tube leaks to the outside of the reaction outer tube and is communicated with the flue gas inlet. After the flue gas to be treated is mixed with a desulfurizing agent, the flue gas enters the reaction inner tube from the flue gas inlet to carry out primary reaction, then enters the reaction outer tube from the reaction inner tube to continue the reaction, and the inner sleeve type structure and the outer sleeve type structure of the reaction outer tube and the reaction inner tube effectively increase the reaction time and reduce the occupied area of equipment. The reaction inner tube is by being close to the one end of flue gas inlet begins to constitute by air inlet straight tube section, air inlet taper pipe section, middle straight tube section, play gas taper pipe section and the straight tube section of giving vent to anger in proper order, the structural style of venturi is formed to the middle part of reaction inner tube, can make flue gas and desulfurizer mix more evenly, is favorable to improving SO2The removal efficiency of (1). And one part of the air inlet straight pipe section is exposed outside the reaction outer pipe, and the rest parts of the air inlet straight pipe section are positioned inside the reaction outer pipe. The reaction outer tube with be equipped with the guide plate between the reaction inner tube, the guide plate slope set up and its incline direction with the flow direction of the interior air current of reaction outer tube is unanimous, the projection of guide plate in with air current vertically plane is the semi-annular shape, the outer lane of guide plate with the inside wall laminating of reaction outer tube is fixed, the inner circle of guide plate with the lateral wall laminating of reaction inner tube is fixed. The plurality of guide plates are uniformly distributed in the direction of the airflow in the reaction outer pipe, and the adjacent guide plates are arranged in a staggered manner, so that the airflow forms an S-shaped trend in the reaction outer pipe. When the guide plate is not arranged, smoke flows into the reaction outer pipe from one end of the reaction inner pipe, most of the smoke flows through the shortest path and is directly discharged from the smoke outlet, and the space in the reaction outer pipe is not effectively utilized, SO that the guide plate can guide airflow, the smoke fully flows through all the spaces in the reaction outer pipe, and the SO is further improved2The removal efficiency of (1).
Furthermore, one side of the flue gas outlet, which is far away from the reaction outer tube, is connected with a horizontally arranged flue gas buffer tube, the bottom of the flue gas buffer tube is provided with a powder collecting hopper, the bottom of the flue gas buffer tube is sunken downwards to form a conical hopper shape, and the bottom of the powder collecting hopper is connected with a discharging valve. The bottom of the smoke buffer tube is located at the downwind position of the air flow of the powder collecting hopper and is provided with an ash blocking plate, and the ash blocking plate is fixedly attached to the bottom of the smoke buffer tube. The particles deposited on the lower sealing plate can enter the powder collecting hopper under the action of wind power, and the unloading valve is opened to finish the unloading of the particles in the powder collecting hopper. The ash blocking plate can block particles close to the bottom of the smoke buffer tube
Furthermore, the top cover is an umbrella-shaped shell, and the area of one end of the top cover, which is close to the reaction outer tube, is larger than that of the other end of the top cover.
Further, the shrouding slope sets up down and its incline direction with the flow direction of the interior air current of reaction outer tube is unanimous, the shrouding is located the bottom of air current downwind one side with exhanst gas outlet's bottom parallel and level down. Keep away from on the reaction outer tube one side of exhanst gas outlet is equipped with sweeps the nozzle, sweep the nozzle insert extremely the inside of reaction outer tube and be located the last border of shrouding down, the inclination that sweeps the nozzle with the inclination of shrouding is unanimous down. The lower sealing plate is obliquely arranged, so that particles deposited on the lower sealing plate can automatically slide into the smoke buffer tube, and the blowing nozzle can further reduce the deposition of the particles on the lower sealing plate.
Furthermore, the outer side wall of the reaction outer tube is provided with annular reinforcing ribs which are uniformly arranged along the axial direction of the reaction outer tube.
Furthermore, a pressure difference sensor is arranged between the smoke inlet and the smoke buffer tube. The pressure difference sensor can measure the pressure difference value of the desulfurization reactor, when the inside of the desulfurization reactor is blocked, the display numerical value of the pressure difference sensor is increased, and a manager can be prompted to correspondingly overhaul the equipment.
Compared with the prior art, the utility model has the beneficial effects that:
the improved middle part of the reaction inner tube is provided with the air inlet taper tube section, the middle straight tube section and the air outlet taper tube section to form a Venturi structural form, SO that the flue gas and the desulfurizer can be mixed more uniformly, and the improvement of SO is facilitated2The removal efficiency of (2); a plurality of guide plates are arranged between the reaction outer tube and the reaction inner tube, which play a role in guiding the airflow, SO that the flue gas can fully flow through all the spaces in the reaction outer tube, and the SO is further improved2The removal efficiency of (2); the bottom of flue gas buffer tube is equipped with the powder and collects the fill to the cooperation the ash blocking plate, the lower shrouding that the slope set up and sweep the nozzle, can effectively improve the cleaning efficiency of reactor, prevent that the reactor is inside to be blockked up by sedimentary particulate matter.
Drawings
FIG. 1 is a schematic diagram of a front perspective structure of a vertical sodium-based dry desulfurization reactor according to the present invention.
Fig. 2 is a schematic cross-sectional structure at a in fig. 1.
FIG. 3 is a schematic front view of the reaction inner tube of the present invention.
In the figure: 1. the reaction outer tube, 2, the reaction inner tube, 2.1, the straight tube section of admitting air, 2.2, the taper pipe section of admitting air, 2.3, middle straight tube section, 2.4, the taper pipe section of giving vent to anger, 2.5, the straight tube section of giving vent to anger, 3, the top cap, 4, the guide plate, 5, lower shrouding, 6, the flue gas import, 7, differential pressure sensor, 8, the exhanst gas outlet, 9, the flue gas buffer tube, 10, sweep the nozzle, 11, the dust deflector, 12, the powder is collected and is fought, 13, the discharge valve, 14, cyclic annular strengthening rib.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 3, the vertical sodium-based dry desulfurization reactor comprises an outer reaction tube 1 and an inner reaction tube 2, wherein the top of the outer reaction tube 1 is plugged by a top cap 3, the bottom of the outer reaction tube 1 is plugged by a lower sealing plate 5, and a flue gas outlet 8 is formed in one side of the side wall of the outer reaction tube 1, which is close to the lower sealing plate 5. Both ends of the reaction inner tube 2 are open, one end of the reaction inner tube 2 penetrates through the lower sealing plate 5 and is sleeved in the reaction outer tube 1, and the other end of the reaction inner tube 2 leaks to the outside of the reaction outer tube 1 and is communicated with the flue gas inlet 6. After the flue gas to be treated is mixed with a desulfurizer, the flue gas enters the reaction inner tube 2 from the flue gas inlet 6 to carry out preliminary reaction, then enters the reaction outer tube 1 from the reaction inner tube 2 to continue the reaction, and the inner and outer sleeve type structures of the reaction outer tube 1 and the reaction inner tube 2 effectively increase the reaction time and reduce the occupied area of equipment. The reaction inner tube 2 is formed by a gas inlet straight tube section 2.1, a gas inlet taper tube section 2.2, a middle straight tube section 2.3, a gas outlet taper tube section 2.4 and a gas outlet straight tube section 2.5 which are close to one end of the flue gas inlet 6 in sequence, the middle part of the reaction inner tube 2 forms a Venturi structure, SO that flue gas and desulfurizer can be mixed more uniformly, and the improvement of SO is facilitated2The removal efficiency of (1). A part of the straight gas inlet pipe section 2.1 is exposed outside the reaction outer pipe 1, and the rest is positioned inside the reaction outer pipe 1. The reaction outer tube 1 with be equipped with guide plate 4 between the reaction inner tube 2, the slope of guide plate 4 sets up and its incline direction with the flow direction of air current is unanimous in the reaction outer tube 1, the projection of guide plate 4 in the plane with the air current vertically is the half annular shape, the outer lane of guide plate 4 with the laminating of the inside wall of reaction outer tube 1 is fixed, the inner circle of guide plate 4 with the laminating of the lateral wall of reaction inner tube 2 is fixed. A plurality of the guide plates 4 are uniformly distributed along the direction of the airflow in the reaction outer tube 1, and the adjacent guide plates 4 are arranged in a staggered manner, so that the airflow forms an S-shaped trend in the reaction outer tube 1. When the guide plate 4 is not arranged, the flue gas flows from one of the reaction inner tubes 2After the end flows into the reaction outer tube 1, most of the flue gas can flow through the shortest path and is directly discharged from the flue gas outlet 8, and the space in the reaction outer tube 1 is not effectively utilized, SO the guide plate 4 can guide the airflow, the flue gas can fully flow through all the spaces in the reaction outer tube 1, and the SO is further improved2The removal efficiency of (1).
In practical application, a horizontally arranged flue gas buffer tube 9 is connected to one side of the flue gas outlet 8, which is far away from the reaction outer tube 1, a powder collecting hopper 12 is arranged at the bottom of the flue gas buffer tube 9, the powder collecting hopper 12 is sunken downwards at the bottom of the flue gas buffer tube 9 to form a cone hopper shape, and the bottom of the powder collecting hopper 12 is connected with a discharge valve 13. The bottom of the smoke buffer tube 9 is located at the downwind position of the air flow of the powder collecting hopper 12 and is provided with an ash blocking plate 11, and the ash blocking plate 11 is attached and fixed to the bottom of the smoke buffer tube 9. The particles deposited on the lower sealing plate 5 can enter the powder collecting hopper 12 under the action of wind, and the unloading of the particles in the powder collecting hopper 12 can be completed by opening the unloading valve 13. The ash blocking plate 11 can block particles close to the bottom of the smoke buffer tube 9
In practical application, the top cover 3 is an umbrella-shaped shell, and the area of one end of the top cover 3 close to the reaction outer tube 1 is larger than that of the other end of the top cover.
In practical application, lower shrouding 5 slope sets up and its incline direction with the flow direction of the interior air current of reaction outer tube 1 is unanimous, lower shrouding 5 is located the bottom of air current downwind one side with the bottom parallel and level of exhanst gas outlet 8. Keep away from on the reaction outer tube 1 one side of exhanst gas outlet 8 is equipped with and sweeps nozzle 10, sweep nozzle 10 insert to the inside of reaction outer tube 1 just is located the last border of shrouding 5 down, sweep nozzle 10's inclination with shrouding 5's inclination is unanimous down. The lower closing plate 5 is obliquely arranged, so that particles deposited on the lower closing plate 5 can automatically slide into the smoke buffer tube 9, and the blowing nozzle 10 can further reduce the deposition of the particles on the lower closing plate 5.
In practical application, the outer side wall of the reaction outer tube 1 is provided with annular reinforcing ribs 14, and the annular reinforcing ribs 14 are uniformly arranged along the axial direction of the reaction outer tube 1.
In practical application, a differential pressure sensor 7 is arranged between the smoke inlet 6 and the smoke buffer tube 9. Differential pressure sensor 7 can measure the pressure differential value of desulfurization reactor, and when its inside jam, differential pressure sensor 7's demonstration numerical value increases, can indicate managers to carry out corresponding maintenance to equipment.
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 utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a vertical reactor of sodium-based dry process desulfurization, includes reaction outer tube (1) and reaction inner tube (2), its characterized in that: the top of the reaction outer tube (1) is plugged by a top cover (3), the bottom of the reaction outer tube (1) is plugged by a lower sealing plate (5), and a flue gas outlet (8) is formed in one side of the side wall of the reaction outer tube (1) close to the lower sealing plate (5); both ends of the reaction inner tube (2) are open, one end of the reaction inner tube (2) penetrates through the lower sealing plate (5) and is sleeved in the reaction outer tube (1), and the other end of the reaction inner tube (2) leaks out of the reaction outer tube (1) and is communicated with the flue gas inlet (6); the reaction inner tube (2) is sequentially composed of an air inlet straight tube section (2.1), an air inlet conical tube section (2.2), a middle straight tube section (2.3), an air outlet conical tube section (2.4) and an air outlet straight tube section (2.5) from one end close to the flue gas inlet (6), one part of the air inlet straight tube section (2.1) is exposed outside the reaction outer tube (1), and the rest parts of the air inlet straight tube section are positioned inside the reaction outer tube (1); a guide plate (4) is arranged between the reaction outer tube (1) and the reaction inner tube (2), the guide plate (4) is arranged in an inclined mode, the inclined direction of the guide plate is consistent with the flow direction of air flow in the reaction outer tube (1), the projection of the guide plate (4) in a plane perpendicular to the air flow is in a semi-annular shape, the outer ring of the guide plate (4) is fixedly attached to the inner side wall of the reaction outer tube (1), and the inner ring of the guide plate (4) is fixedly attached to the outer side wall of the reaction inner tube (2); a plurality of the guide plates (4) are uniformly distributed along the direction of the airflow in the reaction outer tube (1), and the adjacent guide plates (4) are arranged in a staggered manner, so that the airflow forms an S-shaped trend in the reaction outer tube (1).
2. The vertical reactor for sodium-based dry desulfurization of claim 1, characterized in that: one side of the flue gas outlet (8) far away from the reaction outer tube (1) is connected with a horizontally arranged flue gas buffer tube (9), the bottom of the flue gas buffer tube (9) is provided with a powder collecting hopper (12), the powder collecting hopper (12) is downwards sunken at the bottom of the flue gas buffer tube (9) to form a cone hopper shape, and the bottom of the powder collecting hopper (12) is connected with a discharge valve (13); the bottom of the smoke buffer tube (9) is located at the downwind position of the air flow of the powder collecting hopper (12) and is provided with an ash blocking plate (11), and the ash blocking plate (11) is attached to and fixed with the bottom of the smoke buffer tube (9).
3. The vertical reactor for sodium-based dry desulfurization of claim 1, characterized in that: the top cover (3) is an umbrella-shaped shell, and the area of one end, close to the reaction outer tube (1), of the top cover (3) is larger than that of the other end of the reaction outer tube.
4. The vertical reactor for sodium-based dry desulfurization of claim 1, characterized in that: the lower sealing plate (5) is obliquely arranged, the oblique direction of the lower sealing plate is consistent with the flow direction of the air flow in the reaction outer tube (1), and the bottom end of the lower sealing plate (5) on the downwind side of the air flow is flush with the bottom end of the flue gas outlet (8); keep away from on reaction outer tube (1) one side of exhanst gas outlet (8) is equipped with sweeps nozzle (10), sweep nozzle (10) insert to the inside of reaction outer tube (1) and be located the last border of shrouding (5) down, the inclination of sweeping nozzle (10) with the inclination of shrouding (5) is unanimous down.
5. The vertical reactor for sodium-based dry desulfurization of claim 1, characterized in that: the outer side wall of the reaction outer tube (1) is provided with annular reinforcing ribs (14), and the annular reinforcing ribs (14) are uniformly arranged along the axial direction of the reaction outer tube (1).
6. The vertical reactor for sodium-based dry desulfurization of claim 2, characterized in that: and a pressure difference sensor (7) is arranged between the smoke inlet (6) and the smoke buffer tube (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122952393.4U CN216321103U (en) | 2021-11-29 | 2021-11-29 | Vertical reactor for sodium-based dry desulphurization |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122952393.4U CN216321103U (en) | 2021-11-29 | 2021-11-29 | Vertical reactor for sodium-based dry desulphurization |
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| CN216321103U true CN216321103U (en) | 2022-04-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114849461A (en) * | 2022-04-29 | 2022-08-05 | 浙江天地环保科技股份有限公司 | Waste rotary kiln flue gas dry deacidification device of danger |
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2021
- 2021-11-29 CN CN202122952393.4U patent/CN216321103U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114849461A (en) * | 2022-04-29 | 2022-08-05 | 浙江天地环保科技股份有限公司 | Waste rotary kiln flue gas dry deacidification device of danger |
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