CN213557068U - Desulfurization active coke spiral delivery washing regeneration system - Google Patents
Desulfurization active coke spiral delivery washing regeneration system Download PDFInfo
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- CN213557068U CN213557068U CN202022480612.9U CN202022480612U CN213557068U CN 213557068 U CN213557068 U CN 213557068U CN 202022480612 U CN202022480612 U CN 202022480612U CN 213557068 U CN213557068 U CN 213557068U
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Abstract
The utility model belongs to the atmospheric pollutants field of purifying, concretely relates to desulfurization activity burnt auger delivery washing regeneration system. The utility model comprises a chain bucket elevator and a three-stage spiral conveying washing system which are arranged outside an adsorption tower; the three-stage spiral conveying washing system comprises a first-stage spiral cylinder, a second-stage spiral cylinder and a third-stage spiral cylinder which are sequentially and horizontally connected, and a concentrated acid pool, a dilute acid pool and a clean water pool which are sequentially and correspondingly arranged below the third-stage spiral cylinder; the side wall of each stage of spiral cylinder body is provided with a plurality of openings; the inlet of the adsorption tower is connected with the outlet of the chain bucket elevator, the outlet of the adsorption tower is connected with the feeding port of the primary spiral cylinder, the discharge port of the primary spiral cylinder is connected with the feeding port of the secondary spiral cylinder, the discharge port of the secondary spiral cylinder is connected with the feeding port of the tertiary spiral cylinder, and the discharge port of the tertiary spiral cylinder is connected with the inlet of the chain bucket elevator and used for conveying active coke particles. The utility model discloses the system is simple, and the running cost is low, can regenerate in succession, effectively simplifies process flow.
Description
Technical Field
The utility model belongs to the atmospheric pollutants field of purifying relates to one kind and carries out the flue gas purification technology of comprehensive control for trade waste gases such as coal fired boiler, coking furnace, fritting furnace, biomass boiler, msw incineration boiler, concretely relates to active burnt auger delivery washing regeneration system of desulfurization.
Background
Fossil fuel combustion discharges a large amount of SO2And NOxThe gas causes great harm to the natural environment and physical and psychological health of people, so the flue gas desulfurization and denitration is always the key point of atmospheric pollution control. For coal-fired power plants, SNCR + SCR denitration and limestone-gypsum method desulfurization are generally adopted, the technical route is suitable for large coal-fired units, but the method is not suitable for industrial boilers with low smoke temperature, complex smoke components and small smoke quantity, and the activated coke desulfurization and denitrification technology can meet the resource utilization of sulfur while realizing desulfurization and denitrification and is a dry-process integrated removal technology with the greatest prospect.
The active coke flue gas purification technology is widely applied to the steel and coking industry, a moving bed and thermal regeneration process route is generally adopted, the process flow is complex, the investment and operation cost are high, particularly, the thermal regeneration energy consumption is high, the active coke is seriously ablated and abraded, the operation cost is high, the technology cannot be applied to small and medium boilers, a novel active coke desulfurization and denitrification technology, particularly a desulfurization active coke regeneration technology, is urgently required to be developed aiming at the desulfurization and denitrification of the flue gas of the small and medium boilers, and the technology has great significance for treating pollutants of the small and medium boilers.
The water washing regeneration system based on the desulfurization active coke is always a research hotspot. For example, chinese patent document CN104014231B discloses an integrated desulfurization, denitrification and demercuration flue gas purification system and purification process, in which desulfurization active coke is resolved by a thermal regeneration process, the regenerated active coke enters a pickling tank to be soaked, heavy metal mercury in pores of the active coke is resolved, and then acid liquor on the surface of the active coke is washed away by soaking in clear water in the pickling tank, so as to remove heavy metal mercury adsorbed by the active coke, but the treatment time of simple soaking is long, the regeneration effect is poor, and a large amount of heat energy needs to be consumed for resolution; chinese patent document CN110090541A discloses a system and a method for desulfurization and denitrification in combination with activated coke, the method comprises the steps of falling the activated coke into a hinged cage, immersing into a high-concentration acid tank, lifting the hinged cage, immersing into a low-concentration acid tank again, lifting the hinged cage, immersing into a lower-concentration acid tank again, hoisting the activated coke in batches, and completely separating the immersion regeneration process from the conveying process.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the not enough of prior art existence, providing a desulfurization active coke auger delivery washing regeneration system, reasonable in design, the system is simple, and the running cost is low, can regenerate in succession, effectively simplifies process flow.
In order to realize the purpose, the utility model discloses a technical scheme is:
a spiral conveying, washing and regenerating system for desulfurized active coke comprises a chain bucket elevator and a three-stage spiral conveying and washing system which are arranged outside an adsorption tower;
the three-stage spiral conveying washing system comprises a first-stage spiral cylinder, a second-stage spiral cylinder and a third-stage spiral cylinder which are sequentially and horizontally connected, and a concentrated acid pool, a dilute acid pool and a clean water pool which are sequentially and correspondingly arranged below the third-stage spiral cylinder; the side wall of each stage of spiral cylinder body is provided with a plurality of openings;
the inlet of the adsorption tower is connected with the outlet of the chain bucket elevator, the outlet of the adsorption tower is connected with the feeding port of the first-level spiral cylinder, the discharging port of the first-level spiral cylinder is connected with the feeding port of the second-level spiral cylinder, the discharging port of the second-level spiral cylinder is connected with the feeding port of the third-level spiral cylinder, and the discharging port of the third-level spiral cylinder is connected with the inlet of the chain bucket elevator and used for conveying active coke particles.
Furthermore, the first-stage spiral cylinder body is partially immersed in the concentrated acid pool, the second-stage spiral cylinder body is partially immersed in the diluted acid pool, and the third-stage spiral cylinder body is partially immersed in the clean water pool; the discharge outlet of the three-stage spiral cylinder is higher than the liquid level, and a lengthened pipe section is arranged as an active coke draining section.
Furthermore, the size of the openings on the side walls of the primary spiral cylinder, the secondary spiral cylinder and the tertiary spiral cylinder ranges from 3mm to 10mm, and the aperture of the openings is smaller than the minimum particle size of the active coke particles.
Further, an inlet at the bottom of the clean water tank is connected with an inlet of a process water pipe, and an outlet of the clean water tank is connected with an inlet at the bottom of the dilute acid tank through a clean water pump; the outlet at the bottom of the dilute acid tank is connected with the inlet at the bottom of the concentrated acid tank through a dilute acid pump; the outlet at the bottom of the concentrated acid tank is connected with the process acid treatment system through a concentrated acid pump.
Furthermore, the inner wall surfaces of the primary spiral cylinder body, the secondary spiral cylinder body and the tertiary spiral cylinder body are provided with continuous inner thread plates, and active coke particles roll forwards along the tracks of the inner thread plates in the rotating process of the cylinder body.
Further, a bin is arranged between the outlet of the chain bucket elevator and the inlet of the active coke adsorption tower; and a discharge valve is arranged at the bottom outlet of the active coke adsorption tower, and the outlet of the discharge valve is connected with a feeding port of the primary spiral cylinder.
Furthermore, the discharge valve adopts a star-shaped discharge valve.
Compared with the prior art, the utility model discloses the beneficial effect who has:
the utility model discloses a continuous washing regeneration technology, accomplish washing regeneration at defeated material in-process through the auger delivery active burnt, not only there is the soaking process when washing simultaneously, and there is the circulation flushing action, very big increase the concentration when washing liquid active area with guaranteed at every turn to act on, make active burnt can be abundant with the contact of washing liquid, the contact cavity that attachments such as its surface bubble brought has been avoided, compare in current hot regeneration active burnt technology, continuous washing regeneration has not only been realized, and satisfy it and continuously carry the circulation, system simple process, equipment is compact, investment and running cost are low, can effectively solve current washing regeneration technology complicacy, carry and regeneration process alone operation, active burnt circulation volume and regeneration volume can not satisfy the problem of designing requirement.
Further, the utility model discloses a different concentration acidizing fluid circulation wash, earlier thick back is rare, and the step utilizes, and the sulphuric acid concentration that finally obtains is high, effectively reduces the acid yield.
Further, the utility model discloses in the spiral transportation regeneration process, the active burnt granule rolls forward along the internal thread board track, and this kind constantly rolls forward's mode in the regeneration liquid for the washing regeneration effect is better.
Further, the utility model discloses a set up feed bin and discharge valve, can carry out the activity burnt transport operation according to actual need to guarantee stable continuous the carrying washing regeneration operation of entire system.
Drawings
Fig. 1 is a schematic view of a structure flow in an example of the present invention.
Wherein, 1 is the feed bin, 2 is the adsorption tower, 3 is the discharge valve, 4 is the chain bucket lifting machine, 5 is one-level spiral cylinder, 6 is second grade spiral cylinder, 7 is tertiary spiral cylinder, 8 is concentrated acid tank, 9 is concentrated acid pump, 10 is dilute acid pump, 11 is clean water pump, 12 is dilute acid tank, 13 is the clean water basin, 14 is the internal thread board, III is tertiary spiral delivery water washing system.
Detailed Description
The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the invention.
The utility model relates to a spiral conveying, washing and regenerating system for desulfurization activated coke, which is shown in figure 1 and comprises a storage bin 1, an adsorption tower 2, a discharge valve 3, a three-level spiral conveying and washing system I and a chain bucket elevator 4; desulfurization active coke is stored in feed bin 1, and 1 exit linkage active coke adsorption tower 2 entry in feed bin, and discharge valve 3 is installed to 2 exports of active coke adsorption tower, and 3 exit linkage tertiary auger delivery washing system I entry of discharge valve, tertiary auger delivery washing system I exit linkage chain bucket machine lifting machine 4 entries, 1 top entry of chain bucket lifting machine 4 exit linkage feed bin.
The three-stage spiral conveying water washing system I comprises a first-stage spiral cylinder 5, a second-stage spiral cylinder 6, a third-stage spiral cylinder 7, a concentrated acid tank 8, a dilute acid tank 12, a clear water tank 13, a concentrated acid pump 9, a dilute acid pump 10 and a clear water pump 11; each stage of spiral cylinder is horizontally and coaxially arranged, a feeding port is arranged on one side, a discharging port is arranged on the other side, and inlets and outlets of the first-stage to third-stage spiral cylinders are sequentially connected and used for conveying active coke particles; the one-level spiral cylinder body 5 is partially immersed in the concentrated acid pool 8, the second-level spiral cylinder body 6 is partially immersed in the dilute acid pool 12, the third-level spiral cylinder body 7 is partially immersed in the clean water pool 13, the bottom of the clean water pool 13 is connected with an inlet of a process water pipe, the bottom of the clean water pump 11 is connected with the bottom of the clean water pool 13, an outlet of the clean water pump is connected with the bottom of the dilute acid pool 12, the bottom of the dilute acid pool 10 is connected with an inlet of the dilute acid pump, an outlet of the dilute acid pump is connected with the bottom of the concentrated acid pool 8, the bottom of.
As the utility model discloses preferred embodiment, one-level spiral shell 5, second grade spiral shell 6, the trompil of the 7 side wall faces of tertiary spiral shell, the trompil size is 3mm ~ 10mm, the trompil aperture is less than the active burnt minimum particle diameter.
As the preferred embodiment of the utility model, the continuous internal thread board 14 is installed to one-level spiral barrel 5, second grade spiral barrel 6, tertiary spiral barrel 7 internal face, the barrel revolves the in-process active coke granule and rolls forward along the 14 trails of internal thread board.
As a preferred embodiment of the present invention, the discharge valve 3 is a star-type discharge valve.
As the preferred embodiment of the utility model, the discharge outlet of the three-stage spiral cylinder 7 is a lengthened pipe section which is higher than the liquid level and is an active coke draining section.
In a preferred embodiment of the present invention, the activated coke is cylindrical or unshaped coke and has a particle size of 3mm to 15 mm.
In practical application, use the utility model relates to a when desulfurization active coke spiral delivery washing regeneration system carries out the operation, the active coke granule is discharged through star type discharge valve 3 after accomplishing the desulfurization process in adsorption tower 2, get into one-level spiral barrel 5 in proper order, second grade spiral barrel 6 and tertiary spiral barrel 7, the active coke granule rolls forward along the 14 trails of internal thread board in the barrel revolves the in-process, simultaneously because the barrel submerges respectively in concentrated acid pond 8, dilute acid pond 12, clean water basin 13, the active coke granule rolls the in-process and corresponds submergence all the time in concentrated acid pond 8, in the regenerated liquid of the barrel bottom in dilute acid pond 12 and clean water basin 13, soak the regeneration by the regenerated liquid of different concentrations (concentration is by high to low) in the rotatory transportation process, promote to carry out reuse in adsorption tower 2 through chain bucket elevator 4 again; in the operation process, the regeneration liquid in the concentrated acid tank 8 is supplemented through the dilute acid tank 12, the regeneration liquid in the dilute acid tank 12 is supplemented through the clean water tank 13, and the regeneration liquid in the clean water tank 13 is supplemented through the process water. And when the mass concentration of the sulfuric acid in the concentrated acid tank 8 reaches 10-30%, discharging.
Claims (7)
1. A spiral conveying, water washing and regenerating system for desulfurization activated coke is characterized by comprising a chain bucket elevator (4) and a three-level spiral conveying and water washing system (I), wherein the chain bucket elevator and the three-level spiral conveying and water washing system are arranged outside an adsorption tower (2);
the three-stage spiral conveying water washing system (I) comprises a first-stage spiral cylinder body (5), a second-stage spiral cylinder body (6) and a third-stage spiral cylinder body (7) which are sequentially and horizontally connected, and a concentrated acid pool (8), a dilute acid pool (12) and a clean water pool (13) which are sequentially and correspondingly arranged below the third-stage spiral cylinder body; the side wall of each stage of spiral cylinder body is provided with a plurality of openings;
the inlet of adsorption tower (2) connect the export of chain fill lifting machine (4), the exit linkage of adsorption tower (2) the pan feeding mouth of one-level spiral barrel (5), the pan feeding mouth of second grade spiral barrel (6) is connected to the discharge gate of one-level spiral barrel (5), the feed feeding mouth of tertiary spiral barrel (7) is connected to the discharge gate of second grade spiral barrel (6), the entry of chain fill lifting machine (4) is connected to the discharge gate of tertiary spiral barrel (7), is used for carrying active coke granule.
2. The spiral conveying washing regeneration system for the desulfurized activated coke according to claim 1, characterized in that: the first-stage spiral cylinder (5) is partially immersed in the concentrated acid pool (8), the second-stage spiral cylinder (6) is partially immersed in the diluted acid pool (12), and the third-stage spiral cylinder (7) is partially immersed in the clean water pool (13); the discharge outlet of the three-stage spiral cylinder (7) is higher than the liquid level, and a lengthened pipe section is arranged as an active coke draining section.
3. The spiral conveying and washing regeneration system for the desulfurized active coke according to claim 1, wherein the side walls of the primary spiral cylinder (5), the secondary spiral cylinder (6) and the tertiary spiral cylinder (7) have openings with a size ranging from 3mm to 10mm, and the opening diameter is smaller than the minimum particle size of the active coke particles.
4. The spiral conveying washing regeneration system for the desulfurized activated coke according to claim 1, characterized in that: an inlet at the bottom of the clean water tank (13) is connected with an inlet of a process water pipe, and an outlet of the clean water tank is connected with an inlet at the bottom of the dilute acid tank (12) through a clean water pump (11); the outlet at the bottom of the dilute acid tank (12) is connected with the inlet at the bottom of the concentrated acid tank (8) through a dilute acid pump (10); the outlet at the bottom of the concentrated acid pool (8) is connected with a process acid treatment system through a concentrated acid pump (9).
5. The spiral conveying washing regeneration system for the desulfurized activated coke according to claim 1, characterized in that: the inner wall surfaces of the primary spiral cylinder body (5), the secondary spiral cylinder body (6) and the tertiary spiral cylinder body (7) are provided with continuous inner thread plates (14), and active coke particles roll forwards along the tracks of the inner thread plates (14) in the rotating process of the cylinder body.
6. The spiral conveying washing regeneration system for the desulfurized activated coke according to claim 1, characterized in that: a bin (1) is also arranged between the outlet of the chain bucket elevator (4) and the inlet of the active coke adsorption tower (2); and a discharge valve (3) is arranged at an outlet at the bottom of the active coke adsorption tower (2), and an outlet of the discharge valve (3) is connected with a feeding port of the primary spiral cylinder (5).
7. The spiral conveying washing regeneration system for the desulfurized activated coke according to claim 6, characterized in that: the discharge valve (3) adopts a star-shaped discharge valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022480612.9U CN213557068U (en) | 2020-10-29 | 2020-10-29 | Desulfurization active coke spiral delivery washing regeneration system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022480612.9U CN213557068U (en) | 2020-10-29 | 2020-10-29 | Desulfurization active coke spiral delivery washing regeneration system |
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| CN213557068U true CN213557068U (en) | 2021-06-29 |
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| CN202022480612.9U Active CN213557068U (en) | 2020-10-29 | 2020-10-29 | Desulfurization active coke spiral delivery washing regeneration system |
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