CN114904383B - Fixed bed desulfurization system capable of efficiently utilizing desulfurizing agent - Google Patents
Fixed bed desulfurization system capable of efficiently utilizing desulfurizing agent Download PDFInfo
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- CN114904383B CN114904383B CN202210616777.5A CN202210616777A CN114904383B CN 114904383 B CN114904383 B CN 114904383B CN 202210616777 A CN202210616777 A CN 202210616777A CN 114904383 B CN114904383 B CN 114904383B
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- 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
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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
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
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- B01D2258/0283—Flue gases
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Abstract
The utility model provides a high-efficient fixed bed desulfurization system who utilizes desulfurizing agent, fixed bed desulfurization system includes desulfurizing tower module, material loading module, unloading module and emission chimney, the desulfurizing tower module includes vertical desulfurizing tower commonly used and reserve desulfurizing tower, and reserve desulfurizing tower drops into after using, can realize the online change of desulfurizing agent of commonly used desulfurizing tower under the circumstances of not stopping production, commonly used desulfurizing tower and reserve desulfurizing tower are by outer shell and inside desulfurization post constitution, the desulfurization post intussuseption is filled with the desulfurizing agent, the centre of desulfurization post is provided with vertical inner circle purification chamber, be provided with outer lane purification chamber between the inner wall of desulfurization post and shell, be provided with the inner circle baffle in the inner circle purification chamber, the inner circle baffle cuts apart the inner circle purification chamber into purification cabin and lower purification cabin, and after the desulfurizing tower carries out the design of dividing into separately, the volume of single-seat desulfurizing tower reduces, and flue gas distribution is more even, and the utilization ratio of desulfurizing agent improves.
Description
Technical Field
The invention relates to the technical field of dry desulfurization processes, in particular to a fixed bed desulfurization system capable of efficiently utilizing a desulfurizing agent.
Background
With the increasing importance of the national environmental protection, the emission standard of the flue gas in the industrial production is correspondingly improved, and the sulfur content standard in the flue gas is also more and more strict.
The traditional fixed bed desulfurization reaction tower is designed as a single tower, the specific structure of the traditional fixed bed desulfurization reaction tower is shown in fig. 8, flue gas enters from a flue at the bottom of the reaction tower, upwards passes through a desulfurizing agent layer, completes desulfurization reaction, and finally is discharged through a flue at the top. In the process, flue gas passes through the desulfurizing agent layer from bottom to top, and the lower material layer is deactivated earlier than the upper material layer, and because the inside of the desulfurizing reaction tower is of a through structure, the desulfurizing agent must be replaced integrally after the lower material layer is deactivated in order to ensure the desulfurizing efficiency, so that the desulfurizing agent of the upper material layer is wasted.
There is also a fixed bed desulfurization reaction tower with transverse air inlet on the market, the specific structure of which is shown in fig. 9, the reaction tower is provided with 2 flue gas inlets, the flue gas of each inlet transversely passes through 2 layers of desulfurizing agent layers from the side surface in sequence, and the flue gas is discharged through an outlet flue after being converged in the middle. Because every layer of desulfurizing agent layer is all link up, not the design of dividing the storehouse, so the online change of desulfurizing agent can't be realized, just can change after need stopping, influences normal production flow, still because inside needs to set up the reason of two-layer desulfurizing layer, leads to the whole volume ratio of reaction tower great, comparatively extravagant mill's production space.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a fixed bed desulfurization system capable of efficiently utilizing a desulfurizing agent.
The technical scheme of the invention is as follows:
the utility model provides a high-efficient fixed bed desulfurization system who utilizes desulfurizing agent for the sulfur-containing flue gas that production facility produced in the purification factory, after carrying out adsorption purification with the sulfur element in the sulfur-containing flue gas, form and purify the flue gas and discharge to the atmosphere again, fixed bed desulfurization system includes desulfurizing tower module, material loading module, unloading module and emission chimney, the desulfurizing tower module includes vertical desulfurizing tower commonly used and reserve desulfurizing tower, and the desulfurizing agent that can realize the desulfurizing agent commonly used in the desulfurizing tower on line change under the circumstances of not stopping production after the use of reserve desulfurizing tower, commonly used desulfurizing tower and reserve desulfurizing tower are by outer shell and inside desulfurization post constitution, the desulfurizing agent is filled in the desulfurization post, be provided with vertical inner circle purification chamber in the centre of desulfurization post, be provided with the outer lane purification chamber between the inner wall of desulfurization post and shell, be provided with the inner circle baffle in the inner circle purification chamber, the inner circle purification chamber is cut apart into purification cabin and lower purification cabin, the lower purification cabin of commonly used desulfurizing tower and reserve tower passes through the pipeline and is connected with production facility, and after the desulfurizing tower carries out the design of separating, and the volume reduction of single seat flue gas even more evenly distributes. The upper purification cabin of the common desulfurizing tower and the standby desulfurizing tower is connected with the discharge chimney through a pipeline, and a booster fan is arranged on the pipeline close to one side of the discharge chimney, so that air flow blowing from the desulfurizing tower module to the discharge chimney is formed in the pipeline, the utilization efficiency of desulfurizing agents in the desulfurizing column is improved, and the occupied area of a single reaction tower is reduced.
The feeding module is arranged above the desulfurizing tower module, the top ends of the common desulfurizing tower and the standby desulfurizing tower are respectively provided with a feed inlet, and new desulfurizing agents of the feeding module are filled into the desulfurizing columns from the feed inlets;
the unloading module comprises a scraper, the scraper is arranged below the desulfurizing tower module, and a disabled desulfurizing agent in the desulfurizing column enters the scraper from the lower end of the desulfurizing tower to be collected and conveyed.
The fixed bed desulfurization system for efficiently utilizing the desulfurizing agent is characterized in that a plurality of layered partition plates are arranged inside the desulfurization column, the space inside the desulfurization column is isolated into the annular isolation cabins which are adjacent up and down by the layered partition plates, the uppermost end of the annular isolation cabins is connected with the charging port, the lowermost end of the annular isolation cabins is provided with a discharge port at the lower end of the desulfurization tower, a plurality of isolation ports are arranged on the layered partition plates between the isolation cabins which are adjacent up and down, the isolation ports are communicated with the isolation cabins which are adjacent up and down, each isolation port is provided with a corresponding isolation door unit for controlling the opening and closing of the isolation port, and the arrangement of the isolation cabins can facilitate the up-down rotation of the desulfurizing agent in the desulfurization column.
The isolation door unit comprises a rotary door plate and a connecting rod, wherein the rotary door plate is movably connected below the isolation opening, the inner end of the connecting rod is rotationally connected with the rotary door plate, and the outer end of the connecting rod extends out of the desulfurizing tower shell. The operator can control the rotatory door plant through the connecting rod and carry out horizontal rotation to the switching of control isolation mouth.
Furthermore, the shape of the isolation opening is semicircular, and in order to ensure that the rotary door plate can completely block the isolation opening, the shape of the rotary door plate is a sector with the diameter of more than 1/2 and the radius is not smaller than the radius of the isolation opening.
Further, the center of the circle of the rotary door plate is connected with a hinge rod, and the hinge rod is rotationally connected with the inner end of the connecting rod.
The fixed bed desulfurization system of high-efficient utilization desulfurizing agent as described above, the diameter of isolation mouth is less than the width of layering baffle, thereby a plurality of isolation mouths on the layering baffle can divide into a plurality of section curved isolation bottom plates with layering baffle, isolation bottom plate includes linkage segment, opening section and inclined plane section, the height that highly is higher than the left end of inclined plane section right-hand member makes the inclined plane section forms the inclined plane, the left end of inclined plane section connects the opening section, the isolation mouth sets up on the opening section, the linkage segment is connected between the opening section and the inclined plane section of adjacent isolation bottom plate. After the corresponding isolation port is opened, the desulfurizing agent can slide into the isolation cabin of the lower layer from the isolation cabin of the upper layer along the isolation bottom plate under the action of gravity.
In order to enable the lower isolation bottom plate to catch the desulfurizing agent slipped down from the upper isolation cabin, the desulfurizing agent can fill the upper isolation cabin, and the right end of the inclined plane section is arranged below the upper isolation opening.
Preferably, the incline angle of the incline section is 5-20 degrees.
Preferably, the cross-sectional shape of the inclined surface section comprises an inverted cone shape, so that the desulfurizing agent at two sides can slide towards the middle of the isolation bottom plate in the process of sliding from the left end of the isolation bottom plate to the right end isolation opening, and the flow speed during the transfer of the desulfurizing agent is increased.
Preferably, the cross-sectional shape of the inclined surface section comprises a circular arc shape, so that the condition that the desulfurizing agent is blocked in the isolation cabin is reduced.
The invention has the beneficial effects that:
1. according to the fixed bed desulfurization system for efficiently utilizing the desulfurizing agent, the desulfurizing column of the desulfurizing tower applied in the fixed bed desulfurization system is hollow, the inner ring is provided with the inner ring purifying cavity, the inner ring separating plate is arranged for separating the inner ring purifying cavity, sulfur-containing flue gas can pass through the desulfurizing agent in the same desulfurizing column twice, compared with the conventional desulfurizing tower with transverse air inlet, one desulfurizing column is less arranged, the volume of a single reaction tower is reduced, the flue gas distribution is more uniform, the utilization rate of the desulfurizing agent is improved, and the integral installation of the desulfurizing tower can be realized;
2. according to the fixed bed desulfurization system for efficiently utilizing the desulfurizing agent, the common desulfurizing tower and the standby desulfurizing tower which are connected in parallel are arranged, when the desulfurizing agent in the common desulfurizing tower needs to be replaced, the standby desulfurizing tower is started, so that the desulfurizing agent in the common desulfurizing tower can be replaced on line under the condition of no production stopping, besides, the desulfurizing agent in the lower section of the desulfurizing column is deactivated earlier than that in the upper section of the desulfurizing column, the common desulfurizing tower and the standby desulfurizing tower are switched regularly, the desulfurizing agent in the lower section of the desulfurizing column is added into the upper section for use, the periodic flow of a desulfurizing agent layer can be realized, the windward side of the desulfurizing agent is changed, and the utilization rate of the desulfurizing agent is improved;
3. according to the fixed bed desulfurization system for efficiently utilizing the desulfurizing agent, the desulfurizing column of the fixed bed desulfurization system is provided with the multi-layer layered partition plates, the space in the desulfurizing column is divided into the plurality of layers of upper and lower adjacent isolation cabins, and when the desulfurizing agent in the desulfurizing column is required to be rotated up and down, the desulfurizing agent in each layer of isolation cabins can be accurately controlled, so that the desulfurizing agents with different inactivation degrees are prevented from being mixed together.
Drawings
The aspects and advantages of the present application will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention.
In the drawings:
FIG. 1 is a schematic diagram showing the structure of a fixed bed desulfurization system using a desulfurizing agent efficiently in example 1;
fig. 2 is a partially enlarged structural view of the isolation capsule in embodiment 2;
FIG. 3 is a schematic view showing the internal structure of the desulfurizing tower module in the embodiment 2;
fig. 4 is a schematic structural view of the isolation gate unit in embodiment 2;
fig. 5 is a schematic view showing the structure of a layered separator in the present embodiment 2;
FIG. 6 is a schematic view showing the internal structure of the desulfurizing tower module in example 3;
fig. 7 is a schematic view showing the structure of a layered separator in this embodiment 3;
FIG. 8 is a schematic diagram of a conventional fixed bed desulfurization reaction tower;
FIG. 9 is a schematic diagram of a structure of a fixed bed desulfurization reaction column with lateral gas inlet;
the components represented by the reference numerals in the figures are:
1. a desulfurizing tower module; 11. a common desulfurizing tower; 12. a standby desulfurizing tower; 13. a housing; 131. a cone bucket; 132. a switching valve unit; 133. a gate valve; 134. a discharge valve; 14. a desulfurization column; 141. an isolation cabin; 142. an isolation port; 143. an isolation gate unit; 144. rotating the door panel; 145. a connecting rod; 146. a hinge rod; 147. a layered separator; 148. an isolation floor; 1481. a connecting stage; 1482. an open section; 1483. a bevel section; 15. an outer ring purifying cavity; 16. an inner ring purifying cavity; 17. an inner ring separator; 18. a purifying cabin is arranged on the upper part; 19. a lower purification cabin; 2. a feeding module; 3. a discharging module; 31. a scraper machine; 4. a discharge chimney; 5. a first inlet baffle door; 6. a first outlet flapper door; 7. a second inlet baffle door; 8. a second outlet flapper door; 9. a booster fan.
Detailed Description
Example 1
Referring to fig. 1-5, a fixed bed desulfurization system for high-efficient use desulfurizing agent is arranged in the sulfur-containing flue gas that production facility produced in the purification factory, after carrying out adsorption purification with the sulfur element in the sulfur-containing flue gas, forms and purifies flue gas and discharges to the atmosphere, fixed bed desulfurization system includes desulfurizing tower module 1, material loading module 2, discharge module 3 and emission stack 4, desulfurizing tower module 1 includes vertical common desulfurizing tower 11 and reserve desulfurizing tower 12, and after the reserve desulfurizing tower 12 put into use, can realize the desulfurizing agent of common desulfurizing tower 11 on line replacement under the circumstances of not stopping production, common desulfurizing tower 11 and reserve desulfurizing tower 12 are by the shell 13 of skin and inside desulfurizing column 14 composition, the packing has the desulfurizing agent in the desulfurizing column 14, the centre of desulfurizing column 14 is provided with vertical inner circle purification chamber 16, be provided with inner circle purification chamber 15 between the inner wall of desulfurizing column 14 and shell 13, be provided with inner circle baffle 17 in the inner circle purification chamber 16, the inner circle baffle 17 is with inner circle purification chamber 16 be last purification cabin 18 and lower purification cabin 19, the desulfurizing tower 11 and the lower pipeline is installed to the desulfurization tower 12 and the desulfurization tower is realized through the design that the desulfurization tower is more evenly distributed, and the desulfurization tower is realized the desulfurization volume is reduced and the desulfurization tower is realized. The upper purifying tanks 18 of the common desulfurizing tower 11 and the standby desulfurizing tower 12 are connected with the exhaust chimney 4 through pipelines, and a booster fan 9 is arranged on the pipeline near one side of the exhaust chimney 4, so that air flow blowing from the desulfurizing tower module 1 to the exhaust chimney 4 is formed in the pipeline. In the whole desulfurization process, sulfur-containing flue gas firstly passes through the lower section of the desulfurization column 14 from the lower purification cabin 19 and enters the outer ring purification cavity 15, and then passes through the lower section of the desulfurization column 14 from the outer ring purification cavity 15 and enters the upper purification cabin 18, so that the utilization efficiency of the desulfurizing agent in the desulfurization column 14 is improved, and the occupied area of a single reaction tower is reduced.
Further, the feeding module 2 is arranged above the desulfurizing tower module 1, the top ends of the common desulfurizing tower 11 and the standby desulfurizing tower 12 are respectively provided with a feeding hole, and new desulfurizing agents of the feeding module 2 are filled into the desulfurizing columns 14 from the feeding holes;
further, the unloading module 3 comprises a scraper machine 31, the scraper machine 31 is arranged below the desulfurizing tower module 1, and the invalid desulfurizing agent in the desulfurizing column 14 enters the scraper machine 31 from the lower end of the desulfurizing tower for collection and transmission. The discharging module 3 can also discharge the desulfurizing agent which is firstly deactivated at the lower end of the desulfurizing column 14, and a new desulfurizing agent is added through the feeding module 2, so that the full utilization of the desulfurizing agent is ensured.
In addition, the common and standby desulfurizing towers 12 can be switched regularly, part of the desulfurizing agent at the lower end of the discharged desulfurizing column 14 is added into the upper end of the desulfurizing column 14 through the feeding module 2, so that the periodic flow of the desulfurizing agent layer is realized, the windward surface of the desulfurizing agent is changed, and the utilization rate of the desulfurizing agent is improved.
Preferably, the lower end of the housing 13 is provided with a cone hopper 131, the upper end with a large opening of the cone hopper 131 is connected with the lower end of the desulfurization column 14, the lower end with a small opening of the cone hopper 131 is connected with a switch valve unit 132 through a pipeline, the switch valve unit 132 is arranged above the scraper machine 31, and the cone hopper 131 can reduce the usage amount of the desulfurizing agent by filling waste materials without passing through flue gas.
Preferably, the on-off valve unit 132 includes a gate valve 133 and a discharge valve 134, the gate valve 133 is disposed between the discharge valve 134 and the cone 131, and controls the opening and closing of the lower pipe of the cone 131, and the discharge valve 134 controls the discharge rate of the lower pipe of the cone 131.
The specific desulfurization process of the sulfur-containing flue gas in the fixed bed desulfurization system comprises the following steps:
(1) The sulfur-containing flue gas generated by the production equipment enters a lower purification cabin 19 at the bottommost end of a common desulfurizing tower 11 or a standby desulfurizing tower 12 through a pipeline;
(2) The sulfur-containing flue gas passes through the desulfurization column 14 from the lower purification cabin 19 and enters the outer ring purification cavity 15 to be subjected to primary contact purification with the desulfurizing agent in the desulfurization column 14;
(3) The sulfur-containing flue gas moves upwards along the outer ring purification cavity 15, passes through the desulfurization column 14 again from the outer ring purification cavity 15 and enters the upper purification cabin 18, and is subjected to secondary contact purification with the desulfurizing agent in the desulfurization column 14 to form purified flue gas with sulfur content meeting emission standards;
(4) The purified flue gas of the upper purification cabin 18 is discharged into the exhaust stack 4 through a pipe, and is discharged into the atmosphere through the exhaust stack 4.
Example 2
Referring to fig. 2, a plurality of layered separators 147 are disposed inside the desulfurization column 14, the layered separators 147 isolate the space inside the desulfurization column 14 into annular upper and lower adjacent compartments 141, the uppermost compartment 141 is connected with a feed port, the lowermost compartment 141 is provided with a discharge port at the lower end of the desulfurization tower, a plurality of isolation ports 142 are disposed on the layered separators 147 between the upper and lower adjacent compartments 141, the isolation ports 142 are communicated with the upper and lower adjacent compartments 141, so that the desulfurizing agent in the upper compartment 141 can enter the lower compartment 141, each isolation port 142 is provided with a corresponding isolation door unit 143 for controlling the opening and closing of the isolation port 142, the compartments 141 are provided, the upper and lower rotation of the desulfurizing agent in the desulfurization column 14 can be conveniently performed, each compartment 141 can be independently opened and controlled, and the desulfurizing agent is taken out from the lowermost compartment 141 once and added into the uppermost compartment 141, so that the desulfurizing agents with different degrees of inactivation are prevented from being mixed together when the desulfurizing agent is taken out.
When the up-and-down rotation of the desulfurizing agent in the desulfurizing column 14 is performed, all the isolation gate units 143 are in a closed state by default, and first, the on-off valve units 132 at the lower end of the desulfurizing tower are individually opened, and the desulfurizing agent having a lower activity in the lowermost isolation chamber 141 is discharged onto the scraper machine 31 of the discharging module 3. In the second step, the switching valve unit 132 is closed. Third, the isolation door unit 143 is opened, the desulfurizing agent in the isolation cabin 141 is introduced into the isolation cabin 141 of the next layer, and then the isolation door unit 143 of the layer is closed, and the above operation is repeated until the original desulfurizing agent in the isolation cabin 141 enters the isolation cabin 141 of the next layer, so that the desulfurizing agents with different inactivation degrees in different isolation cabins 141 are prevented from being mixed together, and the uppermost isolation cabin 141 is emptied. Finally, after the desulfurizing agent discharged from the lower end isolation cabin 141 is stirred, the desulfurizing agent is added into the isolation cabin 141 at the uppermost layer of the desulfurizing column 14 from a charging port through the charging module 2, so that the up-down rotation of the desulfurizing agent in the desulfurizing column 14 is completed, the windward side of the desulfurizing agent is changed, and the utilization rate of the desulfurizing agent is improved.
As shown in fig. 4, the isolation door unit 143 includes a rotation door plate 144 and a connection rod 145, the rotation door plate 144 is movably connected below the isolation opening 142, an inner end of the connection rod 145 is rotatably connected with the rotation door plate 144, and an outer end of the connection rod 145 extends out of the desulfurizing tower housing 13. An operator can control the rotary door panel 144 to horizontally rotate through the connection rod 145, thereby controlling the opening and closing of the isolation opening 142.
Further, the shape of the isolation opening 142 is semicircular, and in order to ensure that the rotation door 144 can completely block the isolation opening 142, the shape of the rotation door 144 is a sector of 1/2 or more, and the radius is not smaller than the radius of the isolation opening 142.
Further, a hinge rod 146 is connected to the center of the rotary door 144, and the hinge rod 146 is rotatably connected to the inner end of the connecting rod 145. The connection mode that the connecting rod 145 is directly connected with the rotating door plate 144 body is not adopted, because the connection mode that the connecting rod 145 is directly connected with the rotating door plate 144 body is very inflexible to operate, the situation that the locking can not rotate easily occurs, after the hinge rod 146 is added, the connecting rod 145 is not directly connected with the rotating door plate 144 body any more, and the connecting rod 145 is utilized to rotate the hinge rod 146, so that the rotating door plate 144 is driven to rotate, and the operation is more labor-saving.
Further, the diameter of the isolation opening 142 is smaller than the width of the layered partition 147, the isolation openings 142 on the layered partition 147 can divide the layered partition 147 into a plurality of arc isolation bottom plates 148, the isolation bottom plates 148 comprise connecting sections 1481, opening sections 1482 and inclined surface sections 1483, the right end of each inclined surface section 1483 is higher than the left end, the inclined surface sections 1483 form inclined surfaces, the left end of each inclined surface section 1483 is connected with the corresponding opening section 1482, the isolation opening 142 is provided with the corresponding opening section 1482, the opening section 1482 is located at the lowest position of the isolation bottom plates 148, and the connecting sections 1481 are connected between the opening sections 1482 and the inclined surface sections 1483 of the adjacent isolation bottom plates 148. After opening the corresponding barrier 142, the desulfurizing agent can slide from the upper barrier compartment 141 to the lower barrier compartment 141 under the action of gravity along the barrier floor 148 without manual pushing.
In order to allow the lower spacer floor 148 to catch the desulfurizing agent slid down by the upper spacer compartment 141, the right end of the bevel section 1483 is disposed below the spacer orifice 142 of the upper layered partition 147.
Preferably, the inclined surface section 1483 of the present embodiment has an inclination angle of 7 degrees, and when the rotation door 144 is opened or closed due to an excessive inclination angle, the operation is not easy due to the excessive resistance of the desulfurizing agent, and the desulfurizing agent cannot slide out of the isolation cabin 141 completely due to the gravity effect due to a too small inclination angle.
Preferably, the cross-sectional shape of the bevel section 1483 includes an inverted cone shape, so that the desulfurizing agent on both sides can slide toward the middle of the isolation bottom plate 148 during the process from the left end of the isolation bottom plate 148 to the right end isolation opening 142, thereby increasing the flow speed during the transfer of the desulfurizing agent, saving time and improving efficiency.
As shown in fig. 1, a first inlet baffle door 5 is arranged on a pipeline of production equipment, which is close to one side of a common desulfurizing tower 11, a first outlet baffle door 6 is arranged on a pipeline of an exhaust chimney 4, which is close to one side of the common desulfurizing tower 11, a second inlet baffle door 7 is arranged on a pipeline of production equipment, which is close to one side of a standby desulfurizing tower 12, a second outlet baffle door 8 is arranged on a pipeline of the exhaust chimney 4, which is close to one side of the standby desulfurizing tower 12, and the first inlet baffle door 5 and the first outlet baffle door 6 are opened, so that sulfur-containing flue gas enters the common desulfurizing tower 11 for purification, and the second inlet baffle door 7 and the second outlet baffle door 8 are opened, so that the sulfur-containing flue gas enters the standby desulfurizing tower 12 for purification, thereby realizing seamless switching of the common desulfurizing tower and the standby desulfurizing tower 12.
When the activity of the desulfurizing agent in the common desulfurizing column 14 does not meet the desulfurizing requirement after a plurality of times, firstly, the first inlet baffle door 5 and the first outlet baffle door 6 are closed, and the second inlet baffle door 7 and the second outlet baffle door 8 are opened, so that the sulfur-containing flue gas enters the standby desulfurizing tower 12 for purification. In the second step, all the isolation gate units 143 and the on-off valve units 132 in the common desulfurization tower 11 are opened to discharge all the desulfurizing agents in the common desulfurization tower 11, and the desulfurizing agents are carried out by the scraper 31 of the discharging device. And thirdly, closing the on-off valve unit 132 of the common desulfurizing tower 11, and adding new desulfurizing agent into the desulfurizing column 14 from the feed inlet by using the feeding module 2. Third, after the desulfurizing agent is filled in the desulfurizing column 14, all the isolation gate units 143 in the conventional desulfurizing tower 11, and the feed port are closed. And fourthly, opening the first inlet baffle door 5 and the first outlet baffle door 6, closing the second inlet baffle door 7 and the second outlet baffle door 8, and enabling sulfur-containing flue gas to enter the common desulfurizing tower 11 for purification, thereby completing seamless switching of the common and standby towers and replacing desulfurizing agents in the common desulfurizing tower 11 on line.
Other features not mentioned in this embodiment may be the same as those in embodiment 1, and will not be described again.
Example 3
Referring to fig. 6 and 7, the cross-sectional shape of the bevel section 1483 is circular arc, which can make the surface of the isolation floor 148 smoother and smoother, and reduce the occurrence of the blocking of the desulfurizing agent in the isolation cabin 141.
Other features not mentioned in this embodiment may be the same as those in embodiment 1 and embodiment 2, and will not be described again.
Claims (7)
1. The utility model provides a high-efficient fixed bed desulfurization system who utilizes desulfurizing agent for the sulfur-containing flue gas that production facility produced in the purification factory, its characterized in that includes desulfurizing tower module (1), material loading module (2), discharge module (3) and emission chimney (4), desulfurizing tower module (1) are including vertical ordinary desulfurizing tower (11) and reserve desulfurizing tower (12), ordinary desulfurizing tower (11) and reserve desulfurizing tower (12) are constituteed by shell (13) of skin and inside desulfurization post (14), the intussuseption of desulfurization post (14) is filled with the desulfurizing agent, the centre of desulfurization post (14) is provided with vertical inner circle purifying chamber (16), be provided with outer lane purifying chamber (15) between the inner wall of desulfurization post (14) and shell (13), be provided with inner circle baffle (17) in inner circle purifying chamber (16), inner circle baffle (17) divide into upper purifying chamber (18) and lower purifying chamber (19) with inner circle purifying chamber (16), lower purifying chamber (19) of ordinary desulfurizing tower (11) and reserve tower (12) are through pipeline connection with production facility (4) are close to emission chimney (4) and are provided with on one side of the stack (4), forming an air flow blowing from the desulfurizing tower module (1) to the exhaust chimney (4) in the pipeline;
a plurality of layered partition boards (147) are arranged in the desulfurization column (14), the layered partition boards (147) divide the space in the desulfurization column (14) into annular isolation cabins (141) which are adjacent up and down, a plurality of isolation openings (142) are formed in the layered partition boards (147) between the isolation cabins (141) which are adjacent up and down, each isolation opening (142) is provided with a corresponding isolation door unit (143), the opening and closing of the isolation opening (142) are controlled, each layer of isolation cabin (141) can be independently opened and controlled, and therefore a desulfurizing agent is taken out from the isolation cabin (141) at the lowest end and added into the isolation cabin (141) at the uppermost end;
the diameter of the isolation opening (142) is smaller than the width of the layered partition plate (147), the layered partition plate (147) is divided into a plurality of arc isolation bottom plates (148) by the isolation opening (142) on the layered partition plate (147), each isolation bottom plate (148) comprises a connecting section (1481), an opening section (1482) and an inclined plane section (1483), the right end of each inclined plane section (1483) is higher than the left end, so that the inclined plane section (1483) forms an inclined plane, the opening section (1482) is connected to the left end of each inclined plane section (1483), the isolation opening (142) is arranged on each opening section (1482), and each connecting section (1481) is connected between the opening section (1482) and the inclined plane section (1483) of the adjacent isolation bottom plates (148);
the right end of the inclined plane section (1483) is arranged below the upper isolation opening (142);
the feeding module (2) is arranged above the desulfurizing tower module (1), the top ends of the common desulfurizing tower (11) and the standby desulfurizing tower (12) are respectively provided with a feeding hole, and new desulfurizing agents of the feeding module (2) are filled into the desulfurizing columns (14) from the feeding holes;
the unloading module (3) comprises a scraper machine (31), the scraper machine (31) is arranged below the desulfurizing tower module (1), and a disabled desulfurizing agent in the desulfurizing column (14) enters the scraper machine (31) from the lower end of the desulfurizing tower for collection and transmission.
2. The fixed bed desulfurization system for efficiently utilizing a desulfurizing agent according to claim 1, characterized in that the uppermost said compartment (141) is connected with a feed port, and the lowermost said compartment (141) is provided with a discharge port at the lower end of the desulfurizing tower.
3. The fixed bed desulfurization system for efficiently utilizing a desulfurizing agent according to claim 2, wherein the isolation door unit (143) comprises a rotary door plate (144) and a connecting rod (145), the rotary door plate (144) is movably connected below the isolation opening (142), the inner end of the connecting rod (145) is rotatably connected with the rotary door plate (144), and the outer end of the connecting rod (145) extends out of the desulfurizing tower casing (13).
4. A fixed bed desulfurization system for highly effective use of a desulfurizing agent according to claim 3, characterized in that said partition opening (142) is semicircular in shape, said rotary door plate (144) is in the shape of a sector of 1/2 or more, and the radius is not smaller than the radius of the partition opening (142).
5. The fixed bed desulfurization system for efficiently utilizing a desulfurizing agent according to claim 4, characterized in that a hinge rod (146) is connected to the center position of the rotary door plate (144), and the hinge rod (146) is rotatably connected to the inner end of the connecting rod (145).
6. A fixed bed desulfurization system for highly effective use of a desulfurizing agent according to claim 1, characterized in that the cross-sectional shape of said ramp section (1483) comprises an inverted cone shape.
7. A fixed bed desulfurization system for highly effective use of a desulfurizing agent according to claim 1, characterized in that the cross-sectional shape of said slope section (1483) comprises a circular arc shape.
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| CN202210616777.5A CN114904383B (en) | 2022-06-01 | 2022-06-01 | Fixed bed desulfurization system capable of efficiently utilizing desulfurizing agent |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2651574B2 (en) * | 1987-07-09 | 1997-09-10 | 東京都下水道サ−ビス株式会社 | Gas treatment tower |
| CN214715668U (en) * | 2020-12-14 | 2021-11-16 | 辽宁基伊能源科技有限公司 | Fixed bed desulfurization reactor convenient for replacing desulfurizer |
| CN113274845A (en) * | 2021-05-08 | 2021-08-20 | 江苏淮江科技有限公司 | Molecular sieve adsorption tower |
| CN114272744A (en) * | 2021-12-09 | 2022-04-05 | 西南化工研究设计院有限公司 | Moving bed device and process for dry flue gas desulfurization |
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