CN210097389U - Regeneration tower bypass system - Google Patents
Regeneration tower bypass system Download PDFInfo
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- CN210097389U CN210097389U CN201920376664.6U CN201920376664U CN210097389U CN 210097389 U CN210097389 U CN 210097389U CN 201920376664 U CN201920376664 U CN 201920376664U CN 210097389 U CN210097389 U CN 210097389U
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- regeneration tower
- bypass system
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- tower
- based catalyst
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Abstract
The utility model discloses a regeneration tower bypass system is applicable to the regeneration tower of charcoal base catalysis method SOx/NOx control system. The inlet of the carbon-based catalyst of the regeneration tower is provided with a three-way distributor, the three-way distributor is connected with a buffer device through a bypass flow pipe, the buffer device is connected to a vibrating screen through the bypass flow pipe, and a conveying device for conveying the carbon-based catalyst to the desulfurization and denitrification tower is arranged below the vibrating screen. The utility model discloses can carry out the material circulation through bypass system and SOx/NOx control tower when regeneration tower material level is undulant or regeneration tower system breaks down, can not cause the shut down of a whole equipment in short term, leave the time and handle the fault recovery operation.
Description
The technical field is as follows:
the utility model belongs to the environmental engineering field, concretely relates to use regeneration tower bypass system among flue gas joint SOx/NOx control system of charcoal base catalyst as adsorbent and catalyst.
Background art:
the flue gas combined desulfurization and flue gas pollutant removal control technology using the carbon-based catalyst as the adsorbent and the catalyst can realize the integration of desulfurization, denitration, demercuration, heavy metal removal and dust removal and eliminate white smoke. The technology does not basically consume water, saves a large amount of water resources, ensures that the desulphurization byproduct is high-concentration SO2, is convenient for resource utilization, belongs to a deep purification technology, is a new generation flue gas pollutant control technology with very obvious advantages, and has great application prospects in a plurality of fields such as electric power, steel, smelting, waste incineration and the like.
The technical principle of the flue gas desulfurization and denitrification by the carbon-based catalytic method is as follows: SO in the flue gas under the adsorption and catalysis of the carbon-based catalyst2And O2And H20 is reacted to form H2SO4，H2SO4Adsorbing the nitrogen-containing gas to micropores and surfaces of a carbon-based catalyst, and simultaneously performing catalytic reduction reaction on NOx in flue gas and diluted ammonia gas to generate N by utilizing the catalytic performance of the carbon-based catalyst2The desulfurization and denitration of the flue gas are realized, and the carbon-based catalyst after the adsorption and catalytic reaction is regenerated and recycled.
A carbon-based catalytic flue gas desulfurization and denitrification system is generally provided with n desulfurization and denitrification towers and 1 regeneration tower, wherein n is 3-6.
A material circulating system in the carbon-based catalytic flue gas desulfurization and denitration technology is a balanced and stable closed system. And the adsorption saturated carbon-based catalyst discharged from the desulfurization and denitrification tower enters a regeneration tower, is heated, regenerated and cooled and then returns to the desulfurization and denitrification tower to complete a material cycle. When the material level of the desulfurization and denitrification tower or the regeneration tower abnormally fluctuates, the balance can be broken.
To SOx/NOx control tower, its feed bin is great, and it is undulant to absorb the material level by great amplitude, and sets up n SOx/NOx control towers in the SOx/NOx control system, and it is undulant to appear when certain SOx/NOx control tower material level, can adjust all the other SOx/NOx control tower digestion jointly through the operation, and the ability of reply the material level fluctuation is strong.
And to the regenerator column, its feed bin is less, only establishes 1 in the SOx/NOx control system moreover, and the ability of coping with the material level fluctuation is relatively weak.
The invention content is as follows:
to the above problem, the utility model provides a regeneration tower bypass system, technical scheme is as follows:
the utility model provides a regeneration tower bypass system, is applicable to the regeneration tower of carbon-based catalytic process SOx/NOx control system, its characterized in that, the entry of the carbon-based catalyst of regeneration tower still sets up the tee bend tripper, and the tee bend tripper is through bypass flow tube connection buffer, and buffer is connected to the shale shaker through bypass flow tube, and the shale shaker below is equipped with carries the conveyor of carbon-based catalyst to SOx/NOx control tower.
Preferably, the damping device is provided with a plurality of stages.
Preferably, the fall h between two adjacent stages of the buffer devices is 4-6 meters, preferably 5 meters.
Preferably, the damping device is provided with five stages.
Preferably, the buffer device comprises a containing cavity, the containing cavity is provided with a feeding hole and a discharging hole, and the feeding hole and the discharging hole are arranged in a staggered mode.
Preferably, a cylindrical baffle is arranged at the discharge hole in the cavity.
Preferably, the diameter D of the cylindrical baffle is (1.4-1.6) D, preferably D is 1.5D, wherein D is the diameter of the bypass flow pipe.
Preferably, the height a of the cylindrical baffle relative to the bottom plate is selected to be 40-60 mm, and preferably 50 mm.
Compared with the prior art, the utility model have following beneficial effect:
1. the utility model discloses can carry out short-term material circulation through bypass system and SOx/NOx control tower when regeneration tower system material level is undulant, avoid causing the shut down of a whole set of SOx/NOx control system.
2. The utility model discloses can carry out short-term material circulation through bypass system and SOx/NOx control tower when regeneration tower system breaks down, avoid causing the shut down of a whole set of SOx/NOx control system to the time of setting aside detects troubleshooting to resume the operation.
Description of the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the buffering device of the present invention;
wherein: 1-a booster fan; 2-a desulfurization and denitrification tower; 3-a chimney; 4-a first conveyor; 5-a regeneration tower; 6-vibrating screen; 7-a second conveyor; 8-a hot air circulating fan; 9-a heater; 10-a cooling fan; 11-inlet double rotary valve; 12-outlet double rotary valve; 13-a three-way distributor; 14-a level switch; 15-a continuous level gauge; 16-a bypass flow tube; 17-a buffer device; 18-cylindrical baffle.
The specific implementation mode is as follows:
the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The present invention can be modified and changed in various ways, and any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included within the protection scope of the present invention. The utility model discloses in, charcoal base catalyst is the active carbon of improvement, belongs to one kind of active carbon, all belong to the adsorbent of active carbon class, include: conventional activated carbon, activated coke, carbon-based adsorbents, etc. should be included in the scope of the present invention.
The first embodiment is as follows:
this embodiment adopts the utility model provides a pair of regeneration tower bypass system, the entry at the charcoal base catalyst of regeneration tower sets up tee bend tripper 13, the pan feeding end of tee bend tripper 13 passes through the discharge end of conveyor intercommunication SOx/NOx control tower, the entry of the charcoal base catalyst of regeneration tower 5 is connected to the discharge end regeneration tower side of tee bend tripper 13, the other roadside road side of discharge end connects buffer 17 through bypass flow tube 16, buffer 17 is connected to shale shaker 6 through bypass flow tube 16 again, shale shaker 6 below is equipped with carries the conveyer to SOx/NOx control system with the charcoal base catalyst.
The carbon-based catalytic desulfurization and denitrification system comprises n desulfurization and denitrification towers 2 and 1 regeneration tower 5 according to the flow of the purified flue gas, wherein n is 3-6, and n is 3 in the embodiment. The device further comprises a booster fan 1, a chimney 3, a first conveyor 4, a vibrating screen 6, a second conveyor 7, a hot air circulating fan 8, a heater 9 and a cooling fan 10. The booster fan 1 sends the raw flue gas into the desulfurization and denitrification tower 2 for desulfurization, denitrification and purification, and the purified flue gas is discharged from the chimney 3. The carbon-based catalyst in the desulfurization and denitrification tower contacts with the raw flue gas, is discharged from the desulfurization and denitrification tower 2 after being saturated by adsorption, and enters the regeneration tower 5 from the side of the regeneration tower at the discharge end of the three-way distributor 13 through the first conveyor 4. And a hot air circulating fan 8 at the upper part of the regeneration tower 5 sends hot air heated by a heater 9 into the shell pass of the regeneration tower 5 to heat the regenerated carbon-based catalyst. The lower cooling fan 10 of the regeneration tower 5 sends air into the shell side of the regeneration tower for cooling and heating the regenerated carbon-based catalyst. The carbon-based catalyst after cooling is passed through shale shaker 6 and is removed unqualified powder part sieve, and qualified granule part gets into SOx/NOx control tower 2 through second conveyer 7, accomplishes the material and circulates.
A material level switch 14 is also arranged in each hopper of the first conveyor 4, and in a normal running state, the hopper of the first conveyor 4 is not filled with the carbon-based catalyst, and the carbon-based catalyst directly enters the regeneration tower 5; when the hopper of the first conveyor 4 is filled with the carbon-based catalyst, the level switch 14 is started, and the bypass system is operated in an interlocking manner.
A continuous material level meter 15 is arranged in a bin at the upper part of the regeneration tower 5, the continuous material level meter 15 is respectively provided with 6 material levels including HH (high limit material level), H (high material level), CH (high control material level), CL (low control material level), L (low material level) and LL (ultralow material level) from high to low, and the material level change of the regeneration tower 5 is continuously detected. The inlet and the outlet of the regeneration tower 5 are respectively and correspondingly provided with an inlet double-layer rotary valve 11 and an outlet double-layer rotary valve 12, so that the gas locking function of the carbon-based catalyst in the feeding and discharging processes is realized, sealed nitrogen is introduced into the two layers of rotary valves, the gas locking performance is further improved, the regeneration tower is isolated from being communicated with the outside, and the air is prevented from entering the regeneration tower.
Operating the regeneration tower bypass system when one or more of the following conditions occur:
1) when the hopper of the first conveyor 4 is filled with the carbon-based catalyst and the material level switch 14 is started;
2) when the continuous level meter 15 of the regeneration tower 5 reaches HH (extreme high level);
3) when the regeneration tower 5 is in failure or maintenance;
4) when the inlet double-layer rotary valve 11 of the regeneration tower 5 is in failure shutdown;
5) when the outlet double-layer rotary valve 12 of the regeneration tower 5 is in failure shutdown;
6) when the heater 9 is stopped due to a malfunction or interlocked shutdown.
When the regeneration tower bypass system operates, the discharge end of the three-way distributor 12 is firstly switched to the bypass side from the regeneration tower side;
then the double-layer rotary valve 11 at the inlet and the outlet of the regeneration tower 5 is stopped in sequence; the control interface displays and records the running time of the bypass system, and the flashing warning of the control interface is started; and then carrying out fault detection and elimination on the carbon-based catalytic desulfurization and denitrification system. At this time, the carbon-based catalyst discharged from the desulfurization and denitrification tower enters the buffering device through the bypass flow pipe 16 from the side of the discharge end of the three-way distributor, and then enters the second conveyor 7 through the vibrating screen 6 to fall into the desulfurization and denitrification tower again.
After the fault is eliminated, when a regeneration tower bypass system is closed, an outlet double-layer rotary valve 12 of the regeneration tower 5 is started, and when a continuous level indicator 15 of the regeneration tower 5 is below H (high level), an inlet double-layer rotary valve 11 is started; when the continuous level indicator 15 of the regeneration tower 5 is above H (high level), the inlet double-layer rotary valve 11 is started again after the level is reduced below H (high level); the running time of the bypass system returns to zero, and the flashing warning of the control picture is closed; the discharge end of the three-way distributor 13 is reversed from the bypass side to the regeneration tower side; at this point, the carbon-based catalyst discharged from the desulfurization and denitrification tower enters the regeneration tower 5 again through the first conveyor 4 from the discharge end regeneration tower side of the three-way distributor.
Example two:
the further design of this embodiment lies in: the buffering devices 17 are provided with five stages, the two adjacent stages of the buffering devices 17 are connected through a bypass flow pipe, the fall h of the two adjacent stages of the buffering devices 17 is 5 meters, and when a bypass system operates, damage caused by the carbon-based catalyst in the falling process is reduced.
Example three:
the further design of this embodiment lies in: as shown in fig. 2, the buffer device 17 includes a cavity, and the cavity is provided with a feeding hole and a discharging hole, which are arranged in a staggered manner. A cylindrical baffle is arranged at the discharge hole in the accommodating cavity. The diameter D of the cylindrical baffle 18 is 1.5D, and D is the diameter of the bypass flow pipe connected with the discharge port. The height a of the cylindrical baffle plate 18 relative to the bottom plate of the buffer device is 50 mm.
When the bypass system operates, the carbon-based catalyst enters the cavity from the feed inlet, a part of the carbon-based catalyst is firstly intercepted below the feed inlet to form a material pile, and after the height of the material pile is larger than that of the cylindrical baffle 18, the carbon-based catalyst enters the discharge port along a path shown by an arrow in figure 2, so that the damage of the carbon-based catalyst is reduced.
Claims (10)
1. The utility model provides a regeneration tower bypass system, is applicable to the regeneration tower of carbon-based catalytic process SOx/NOx control system, its characterized in that, the entry of the carbon-based catalyst of regeneration tower sets up the tee bend tripper, and the tee bend tripper is through bypass flow tube connection buffer, and buffer is connected to the shale shaker through bypass flow tube, and the shale shaker below is equipped with carries the conveyor of carbon-based catalyst to SOx/NOx control tower.
2. The regeneration tower bypass system of claim 1, wherein: the buffer device is provided with a plurality of stages.
3. The regeneration tower bypass system of claim 2, wherein: the fall h between the two adjacent stages of the buffer devices is 4-6 meters.
4. The regeneration tower bypass system of claim 3, wherein: h is 5 m.
5. The regeneration tower bypass system of claim 3, wherein: the buffer device is provided with five stages.
6. The regeneration tower bypass system according to any one of claims 1-5, wherein: the buffer device comprises a containing cavity, wherein the containing cavity is provided with a feed inlet and a discharge outlet, and the feed inlet and the discharge outlet are arranged in a staggered mode.
7. The regeneration tower bypass system of claim 6, wherein: and a cylindrical baffle is arranged at the discharge hole in the accommodating cavity.
8. The regeneration tower bypass system of claim 7, wherein: the diameter D of the cylindrical baffle is (1.4-1.6) D, wherein D is the diameter of the bypass flow pipe.
9. The regeneration tower bypass system of claim 8, wherein: the height a of the cylindrical baffle relative to the bottom plate is 40-60 mm.
10. The regeneration tower bypass system of claim 9, wherein: the diameter D of the cylindrical baffle is 1.5D, and the height a of the cylindrical baffle relative to the bottom plate is 50 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920376664.6U CN210097389U (en) | 2019-03-22 | 2019-03-22 | Regeneration tower bypass system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920376664.6U CN210097389U (en) | 2019-03-22 | 2019-03-22 | Regeneration tower bypass system |
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| Publication Number | Publication Date |
|---|---|
| CN210097389U true CN210097389U (en) | 2020-02-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920376664.6U Active CN210097389U (en) | 2019-03-22 | 2019-03-22 | Regeneration tower bypass system |
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| Country | Link |
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| CN (1) | CN210097389U (en) |
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2019
- 2019-03-22 CN CN201920376664.6U patent/CN210097389U/en active Active
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