CN220567224U - Comprehensive utilization system for desulfurizing circulating fluidized bed boiler by using pasty red mud - Google Patents
Comprehensive utilization system for desulfurizing circulating fluidized bed boiler by using pasty red mud Download PDFInfo
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- CN220567224U CN220567224U CN202321727187.6U CN202321727187U CN220567224U CN 220567224 U CN220567224 U CN 220567224U CN 202321727187 U CN202321727187 U CN 202321727187U CN 220567224 U CN220567224 U CN 220567224U
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- 239000007788 liquid Substances 0.000 claims abstract description 18
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 4
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- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
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- Treating Waste Gases (AREA)
Abstract
The utility model discloses a comprehensive utilization system of pasty red mud for desulfurization of a circulating fluidized bed boiler, which comprises the following components: the in-furnace desulfurization system comprises a slurry red mud feeding device, a circulating fluidized bed boiler furnace, a cyclone separator and a boiler barrel which are sequentially connected, wherein a slag discharge port at the bottom of the cyclone separator and the circulating fluidized bed boiler furnace is connected with the in-furnace desulfurization product treatment system; the wet desulfurization system comprises a red mud liquid pool, a centrifugal slurry pump I and a desulfurization tower which are sequentially connected, wherein the centrifugal slurry pump I is connected with the upper part of the desulfurization tower through a pipeline, the lower part of the desulfurization tower is connected with a boiler barrel, the red mud liquid pool is connected with a filter press, and the filter press is connected with a wet desulfurization product treatment system; the utility model not only ensures that the discharged flue gas meets the technical requirement of desulfurization and reduces the desulfurization cost, but also realizes dealkalization of the red mud, the red mud desulfurization product can be further utilized, and the secondary pollution generated by waste landfill is avoided.
Description
Technical Field
The utility model relates to the technical field of red mud recycling, in particular to a comprehensive utilization system of pasty red mud for desulfurization of a circulating fluidized bed boiler.
Background
The red mud is extremely fine particle strong alkaline solid waste generated in the process of producing alumina by taking bauxite as a raw material. In recent years, with the rapid development of industries such as electrolytic aluminum, ceramics, medicines, electronics, machinery and the like in China, the demand of the market for alumina is obviously increased, and the amount of red mud generated is greatly increased. The main mode of the comprehensive utilization of the red mud in China is iron selection and road construction, and the secondary mode is the production of ceramic water permeable bricks, water permeable concrete, mortar, cement, ceramsite, microcrystalline materials, inorganic fibers, petroleum fracturing propping agents, steelmaking functional auxiliary materials, the use of the red mud in flue gas wet desulfurization and the like, wherein the comprehensive utilization rate is only 4.29%, and is far lower than the comprehensive utilization average level of solid wastes in large-scale industry in China.
Coal is one of the main energy sources in China all the time, and a large amount of SO can be generated in the process of burning the coal 2 Production of harmful gases such as smoke, CO, etc., especially SO therein 2 The most serious influence on the environment and human health is SO 2 Too high a concentration of (c) may cause the formation of "acid rain" and thus directly pollute the soil.In order to reduce the influence of fire coal on the environment, the study of boiler desulfurization technology is particularly important. The circulating fluidized bed boiler is a coal-fired boiler with higher cleaning efficiency, can be suitable for various fuels, has good load regulation performance and higher combustion efficiency, and also has better environmental protection performance. In particular, limestone is added to a circulating fluidized bed boiler for desulfurization, so that the effect is more remarkable, and the limestone is widely applied to the desulfurization.
However, when limestone is added to a circulating fluidized bed boiler for desulfurization, in order to ensure the desulfurization effect, the desulfurization effect can be ensured only by excessively adding limestone, but the waste of the desulfurizing agent is caused, meanwhile, free calcium oxide (f-CaO) with adverse effect on stability is also produced, so that slag and ash generated by desulfurization in the boiler cannot be used as a mixed material for cement production, and only can be used for landfill, thereby causing secondary pollution to the environment.
Therefore, the utility model provides a comprehensive utilization system for replacing limestone desulfurization with red mud, which solves the problems of low red mud recycling rate, high desulfurization cost of a circulating fluidized bed boiler and secondary pollution generated by the circulating fluidized bed boiler desulfurization.
Disclosure of Invention
The utility model aims to solve the technical problems of low red mud recycling rate, high desulfurization cost of a circulating fluidized bed boiler and secondary pollution generated by the desulfurization of the circulating fluidized bed boiler, and provides a comprehensive utilization system for the desulfurization of the circulating fluidized bed boiler by using pasty red mud, which not only ensures that discharged flue gas meets the technical requirements of desulfurization and reduces the desulfurization cost, but also realizes the dealkalization of the red mud, the red mud desulfurization product can be further utilized, and the secondary pollution generated by waste landfill is avoided.
The utility model is realized by the following technical scheme:
the comprehensive utilization system for desulfurizing the circulating fluidized bed boiler by using the pasty red mud comprises:
the in-furnace desulfurization system comprises a slurry red mud feeding device, a circulating fluidized bed boiler furnace, a cyclone separator and a boiler barrel which are sequentially connected, wherein a slag discharge port at the bottom of the cyclone separator and the circulating fluidized bed boiler furnace is connected with the in-furnace desulfurization product treatment system;
the wet desulfurization system comprises a red mud liquid pool, a centrifugal slurry pump I and a desulfurization tower which are sequentially connected, wherein the centrifugal slurry pump I pumps slurry in the red mud liquid pool into the upper part of the desulfurization tower, the lower part of the desulfurization tower is connected with the outlet end of a boiler barrel, the bottom of the desulfurization tower is connected with the red mud slurry pool, the red mud liquid pool is also connected with a filter press through the centrifugal slurry pump II, and the filter press is connected with a wet desulfurization product treatment system.
Further, the slurry red mud feeding device comprises a red mud pool I, a double-shaft screw feeder I, a plunger pump I, a slurry red mud bin, a double-shaft screw feeder II and a plunger pump II which are connected in sequence.
Further, a distributor is arranged at the bottom of the cyclone separator.
Further, the in-furnace desulfurization product treatment system comprises a fly ash bin, a spiral balance, a high fine mill, a powder separator and a first bag type dust collector which are sequentially connected, wherein the spiral balance is arranged at the bottom of the fly ash bin, the spiral balance is sequentially connected with the high fine mill, the powder separator and the first bag type dust collector, and a discharge hole at the bottom of the first bag type dust collector discharges qualified materials.
Further, the spiral balance is connected with the high fine mill through a first lifting machine, and the high fine mill is connected with the powder selecting machine through a second lifting machine.
Further, the fly ash bin is in butt joint with the cyclone separator and a slag discharge port at the bottom of a circulating fluidized bed boiler hearth through a tank car, and a waste gas outlet at the top of the bag type dust remover is communicated with the exhaust fan II.
Furthermore, the inlet end of the red mud slurry pond is also connected with a red mud pond II, and an overflow port is arranged on the red mud slurry pond II and is communicated with the red mud slurry pond.
Further, the top of the desulfurizing tower is also connected with an exhaust fan I and a chimney in sequence.
Further, the wet desulfurization product treatment system comprises a desulfurization red mud bin, a conveying and weighing device, a drying crusher, a coarse separator, a cyclone dust collector and a bag type dust collector II which are sequentially connected, wherein bottoms of the cyclone dust collector and the bag type dust collector II are communicated with a storage warehouse.
Further, the conveying and weighing device comprises a plate feeder, a belt conveyor, a weighing bin and a belt scale which are sequentially connected, wherein the plate feeder is connected with the bottom of the desulfurization red mud bin, and the belt scale is connected with a drying crusher; and the top waste gas outlet of the second bag type dust collector is communicated with the third exhaust fan.
Compared with the prior art, the utility model has the following advantages and beneficial effects:
1. the utility model uses the red mud as the main component of SiO 2 、Al 2 O 3 、CaO、Fe 2 O 3 、TiO 2 、Na 2 O and the like belong to alkaline solid waste residues and can be matched with SO in flue gas 2 The reaction can be carried out to replace lime, limestone or alkali liquor as a desulfurizing agent of the coal-fired circulating fluidized bed boiler of the thermal power plant, so that the discharged flue gas meets the technical requirements of desulfurization, the purposes of desulfurization and sulfur fixation are achieved, the desulfurization cost is reduced, meanwhile, the dealkalization of the red mud is realized, and the effect of treating waste by waste is achieved.
2. The utility model provides an effective path for recycling application of the red mud, reduces alkali pollution of red mud accumulation to the environment, further enables desulfurization byproducts to have more advantages in preparing building materials, roadbed materials and ecological reclamation, avoids secondary pollution caused by landfill of desulfurization products, realizes gradient utilization of the red mud, solves the problem of red mud utilization, and improves comprehensive utilization efficiency of the red mud.
3. In the utility model, the red mud is subjected to pretreatment before entering a dam, so that the cost of stockpiling, seepage prevention and the like in stockpiling is reduced for an electrolytic aluminum factory, and the red mud per ton is saved by 20-40 yuan.
4. The utility model designs a treatment system for the desulfurization products in the furnace and the wet desulfurization products, so that the desulfurization products can be further utilized, and the treated desulfurization products are used as cement mixed materials, ultrafine fly ash or processed into other building material products, so that the fly ash of the power plant is changed from the current full landfill into the external sales, 25-50 yuan per ton of fly ash is saved, great economic benefits are created for the power plant, and the waste of land resources caused by the landfill is saved.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the utility model and are incorporated in and constitute a part of this application, illustrate embodiments of the utility model. In the drawings:
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic diagram of the in-furnace desulfurization product treatment system;
FIG. 3 is a schematic diagram of a wet desulfurization product treatment system.
In the drawings, the reference numerals and corresponding part names:
1-red mud slurry pond I, 2-double-shaft screw feeder I, 3-plunger pump I, 4-slurry red mud bin, 5-double-shaft screw feeder II, 6-plunger pump II, 7-circulating fluidized bed boiler furnace, 8-cyclone separator, 9-distributor, 10-drum, 11-tank car, 12-red mud pond II, 13-red mud liquid pond, 14-centrifugal slurry pump I, 15-desulfurizing tower, 16-exhaust fan I, 17-chimney, 18-centrifugal slurry pump II, 19-filter press, 20-carrier, 21-fly ash bin, 22-spiral balance, 23-hoist I, 24-high fine mill, 25-hoist II, 26-powder separator, 27-bag dust remover I, 28-exhaust fan II, 29-desulfurized red mud bin, 30-plate feeder, 31-belt conveyor, 32-weighing bin, 33-belt balance, 34-drying crusher, 35-coarse separator, 36-cyclone dust collector, 37-bag dust remover II, 38-storage, 39-three-40-exhaust fan, and 41-exhaust system.
Detailed Description
For the purpose of making apparent the objects, technical solutions and advantages of the present utility model, the present utility model will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present utility model and the descriptions thereof are for illustrating the present utility model only and are not to be construed as limiting the present utility model.
Example 1
The embodiment 1 provides a comprehensive utilization system of slurry red mud for desulfurization of a circulating fluidized bed boiler, as shown in fig. 1, comprising:
in-furnace desulfurization system: the in-furnace desulfurization system comprises a slurry red mud feeding device, a circulating fluidized bed boiler furnace 7, a cyclone separator 8 and a boiler barrel 10 which are sequentially connected, wherein a slag discharge port at the bottom of the cyclone separator 8 and the circulating fluidized bed boiler furnace 7 is connected with a in-furnace desulfurization product treatment system;
wet desulfurization system: the wet desulfurization system comprises a red mud slurry pond 13, a centrifugal slurry pump I14 and a desulfurization tower 15 which are sequentially connected, wherein the centrifugal slurry pump I14 pumps slurry in the red mud slurry pond 13 into the upper part of the desulfurization tower 15, the lower part of the desulfurization tower 15 is connected with the outlet end of a boiler barrel 10, the bottom of the desulfurization tower 15 is connected with the red mud slurry pond 13, the red mud slurry pond 13 is also connected with a filter press 19 through a centrifugal slurry pump II 18, and the filter press 19 is connected with a wet desulfurization product treatment system.
The working flow of the utility model is as follows:
the working flow of the in-furnace desulfurization system is as follows: the slurry red mud enters the top of a circulating fluidized bed boiler hearth 7 from a slurry red mud feeding device and a connecting pipeline to carry out in-furnace desulfurization, and after entering the hearth from the top, the slurry red mud is rapidly evaporated by high-temperature gas and water, then becomes powder, and moves circularly and uniformly mixed with high-temperature gas and materials flowing in the furnace through a cyclone separator 8, wherein the sulfur-fixing components in the red mud and SO 2 The gas is subjected to rapid gas-solid reaction, and after gas-solid separation by a cyclone separator 8, the flue gas SO is caused 2 And the aim of dealkalizing the red mud is fulfilled while the discharge reaches the standard. The red mud desulfurization products and fly ash generated by desulfurization are discharged from a cyclone separator 8 and a slag discharge port at the bottom of a hearth 7 of a circulating fluidized bed boiler, and are conveyed to a desulfurization product treatment system in the furnace for centralized treatment through a tank truck 11, so that the red mud desulfurization products and the fly ash can be directly used as cement mixed materials or further processed into ultrafine powder fly ash, and the utilization rate of the desulfurization products is improved; and the flue gas after desulfurization in the furnace is conveyed into a wet desulfurization system by a special pipeline for re-desulfurization after being cooled by the boiler barrel 10.
The working flow of the wet desulphurization system is as follows: the slurry in the red mud liquid pond 13 is pumped into the top of a desulfurization tower 15 of boiler flue gas by a plurality of centrifugal slurry pumps 14 to spray three layers of flue gas from the boiler barrel 10, so that wet desulfurization of the flue gas is realized, and the slurry discharged from the bottom of the desulfurization tower 15 enters the red mud liquid pond 13, so that repeated recycling of the slurry is realized. And, the red mud slurry after desulfurization is pumped into a filter press 19 by a plurality of centrifugal slurry pumps II 18 for filter pressing, filter pressing liquid is recycled, and filter pressing solid cakes are transported to a wet desulfurization product treatment system for centralized treatment by a transport vehicle 20, and are dried to prepare building materials, roadbed materials and the like.
The utility model uses the red mud as the main component of SiO 2 、Al 2 O 3 、CaO、Fe 2 O 3 、TiO 2 、Na 2 O and the like belong to alkaline solid waste residues and can be matched with SO in flue gas 2 The reaction takes place to replace lime, limestone or alkali liquor as a desulfurizing agent of a coal-fired circulating fluidized bed boiler of a thermal power plant, so that the technical requirement of flue gas desulfurization is met, the purpose of desulfurizing and sulfur fixing can be achieved, meanwhile, the dealkalization of red mud is realized, and the effect of treating waste by waste is achieved.
The utility model not only realizes the recycling application of the red mud, reduces the alkali pollution of the red mud accumulation to the environment, but also ensures that the desulfurization byproducts have more advantages in preparing building materials, roadbed materials and ecological reclamation, avoids secondary pollution caused by landfill of the desulfurization products, realizes the cascade utilization of the red mud, solves the difficult problem of the utilization of the red mud, and improves the comprehensive utilization efficiency of the red mud.
The slurry red mud feeding device comprises a red mud slurry tank I1, a double-shaft screw feeder I2, a plunger pump I3, a slurry red mud bin 4, a double-shaft screw feeder II 5 and a plunger pump II 6 which are connected in sequence. The red mud slag discharge port of the electrolytic aluminum plant is discharged into a special automobile and transported to a first red mud tank 1 of a thermal power plant for temporary storage, forced feeding is carried out by a first double-shaft screw feeder 2, the red mud enters a slurry red mud bin 4 for storage through a first plunger pump 3 and a pipeline, forced feeding is carried out by a second double-shaft screw feeder 5, and the red mud enters the top of a boiler furnace 7 of a circulating fluidized bed of the thermal power plant for desulfurization in the boiler through a second plunger pump 6 and the pipeline.
Wherein, cyclone 8 bottom still is provided with distributor 9, and distributor 9 is used for discharging the red mud after the desulfurization along with the fly ash.
The inlet end of the red mud slurry tank 13 is also connected with a second red mud slurry tank 12, an overflow port is arranged on the second red mud slurry tank 12, and the overflow port is communicated with the red mud slurry tank 13. The red mud slag discharging port of the electrolytic aluminum plant is discharged into a special automobile and transported to a second red mud tank 12 of the thermal power plant for temporary storage, water (the ratio of red mud to water is 1:6-8) is added, mechanical stirring and compressed air blowing are arranged in the second red mud tank 12, upper slurry overflows into a red mud liquid tank 13, and when the pH value of the slurry cannot meet the desulfurization requirement, fresh slurry is supplemented by the second red mud tank 12.
The top of the desulfurizing tower 15 is also sequentially connected with an exhaust fan I16 and a chimney 17. The flue gas from the boiler is discharged from the exhaust fan after passing through desulfurization treatment in the desulfurization tower 15 and is discharged into the atmosphere through the chimney 17.
Example 2
This example further illustrates an in-furnace desulfurization product treatment system based on example 1.
The in-furnace desulfurization product treatment system comprises a fly ash bin 21, a spiral balance 22, a high fine mill 24, a powder concentrator 26 and a first bag type dust collector 27 which are sequentially connected, wherein the spiral balance 22 is arranged at the bottom of the fly ash bin 21, the spiral balance 22 is sequentially connected with the high fine mill 24, the powder concentrator 26 and the first bag type dust collector 27, and a discharge hole at the bottom of the first bag type dust collector 27 discharges qualified materials.
The spiral balance 22 is connected with the high fine mill 24 through a first lifter 23, and the high fine mill 24 is connected with the powder selecting machine 26 through a second lifter 25.
The fly ash bin 21 is in butt joint with the cyclone separator 8 and a slag discharge port at the bottom of the hearth 7 of the circulating fluidized bed boiler through the tank truck 11, and an exhaust gas outlet at the top of the first bag type dust collector 27 is communicated with the second exhaust fan 28.
The desulfurization product in the furnace is the most different from the existing limestone desulfurization product in that free calcium oxide (f-CaO) is not contained, and sodium sulfate (anhydrous sodium sulfate) is an early strength excitant. The red mud is used as a desulfurizing agent of the coal-fired circulating fluidized bed boiler of the power plant to replace limestone, and free calcium oxide (f-CaO) with adverse effect on stability is not generated even if the red mud is excessively doped. So the red mud desulfurization products and the fly ash produced by the in-furnace desulfurization have two utilization schemes:
firstly, since free calcium oxide (f-CaO) is not present, it can be used as a cement admixture or as a raw material for cement production.
Secondly, the superfine fly ash is processed by the treatment system provided in the embodiment.
The two utilization schemes thoroughly change the situation that the fly ash of the existing power plant is completely used for landfill, change the situation to be sold outwards, save 25-50 yuan for each ton of fly ash, create great economic benefit for the power plant, save a large amount of land resources at the same time, and have remarkable economic, environmental and social benefits.
The processing system workflow of the present embodiment:
the red mud desulfurization products and the fly ash are transported to a fly ash bin 21 for storage by a tank truck 11, are metered by a bin bottom spiral scale 22, enter a high fine mill 24 for grinding by a first lifter 23, enter a high fine JS powder selecting machine 26 for sorting by a second grinding tail lifter 25, enter a material bin after being collected by a first bag type dust collector 27, return and grind the materials with unqualified fineness, filter mill waste gas by the first bag type dust collector 27, enter a chimney 17 by a second exhaust fan 28, and are then emptied.
Example 3
This example further illustrates a wet desulfurization product treatment system based on example 1.
The wet desulfurization product treatment system comprises a desulfurization red mud bin 29, a conveying and weighing device, a drying crusher 34, a coarse separator 35, a cyclone dust collector 36 and a second bag dust collector 37 which are sequentially connected, wherein bottoms of the cyclone dust collector 36 and the second bag dust collector 37 are communicated with a storage warehouse 38.
The conveying and weighing device comprises a plate feeder 30, a belt conveyor 31, a weighing bin 32 and a belt scale 33 which are sequentially connected, wherein the plate feeder 30 is connected with the bottom of the desulfurization red mud bin 29, and the belt scale 33 is connected with a drying crusher 34.
Wherein, the top waste gas outlet of the second bag type dust collector 37 is communicated with the third exhaust fan 40.
The processing system workflow of the present embodiment:
the red mud desulfurization product of wet desulfurization is prepared by using Na 2 SO 4 、CaSO 4 And SiO 2 Slurry as main component (Na of red mud after desulfurization 2 The O content can be reduced to 1% -2%), the materials are subjected to filter pressing by a plate-frame filter press 19, then are conveyed by a transport vehicle 20 to enter a desulfurization red mud storage bin 29, are fed into a belt conveyor 31 by a plate feeder 30, are provided with iron removers on the belt conveyor 31, then enter a weighing bin 32, are metered by a belt scale 33, are fed into a drying crusher 34 by a locking air feeder to be dried to powder, the materials discharged from the drying crusher 34 are separated by a coarse separator 35, the unqualified materials return to the drying crusher 34 to be continuously dried, the qualified materials are collected by a cyclone dust collector 36 and a bag dust collector II 37 and enter a storage bin 38 to be stored. Wherein the heat source of the dryer crusher 34 is provided by a hot blast stove 39. The dried waste gas is filtered by the two-stage dust remover and is discharged into a desulfurization and denitrification system 41 by an exhaust fan III 40.
The red mud desulfurization product subjected to wet desulfurization treated by the embodiment can be used for preparing building materials, roadbed materials and the like.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the utility model, and is not meant to limit the scope of the utility model, but to limit the utility model to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the utility model are intended to be included within the scope of the utility model.
Claims (10)
1. The utility model provides a system is used for cyclic fluidized bed boiler desulfurization's comprehensive utilization to pulpiness red mud which characterized in that includes:
the in-furnace desulfurization system comprises a slurry red mud feeding device, a circulating fluidized bed boiler furnace (7), a cyclone separator (8) and a boiler barrel (10) which are sequentially connected, wherein a slag discharge port at the bottoms of the cyclone separator (8) and the circulating fluidized bed boiler furnace (7) is connected with the in-furnace desulfurization product treatment system;
wet flue gas desulfurization system, wet flue gas desulfurization system is including red mud thick liquid pond (13), centrifugal sediment thick liquid pump (14), desulfurizing tower (15) that connect gradually, first centrifugal sediment thick liquid pump (14) pumps the thick liquid in red mud thick liquid pond (13) into desulfurizing tower (15) upper portion, desulfurizing tower (15) lower part is connected with drum (10) exit end, desulfurizing tower (15) bottom is connected with red mud thick liquid pond (13), red mud thick liquid pond (13) are still connected with pressure filter (19) through second centrifugal sediment thick liquid pump (18), pressure filter (19) are connected with wet flue gas desulfurization product processing system.
2. The comprehensive utilization system for desulfurization of a circulating fluidized bed boiler according to claim 1, wherein the slurry red mud feeding device comprises a first red mud tank (1), a first double-shaft screw feeder (2), a first plunger pump (3), a slurry red mud bin (4), a second double-shaft screw feeder (5) and a second plunger pump (6) which are sequentially connected.
3. The comprehensive utilization system for desulfurization of the circulating fluidized bed boiler according to claim 1, wherein a distributor (9) is further arranged at the bottom of the cyclone separator (8).
4. The comprehensive utilization system for desulfurization of the circulating fluidized bed boiler according to claim 1, wherein the in-furnace desulfurization product treatment system comprises a fly ash bin (21), a spiral balance (22), a high fine mill (24), a powder selecting machine (26) and a first bag type dust collector (27) which are sequentially connected, the spiral balance (22) is arranged at the bottom of the fly ash bin (21), the spiral balance (22) is sequentially connected with the high fine mill (24), the powder selecting machine (26) and the first bag type dust collector (27), and a discharge port at the bottom of the first bag type dust collector (27) discharges qualified materials.
5. The comprehensive utilization system for desulfurization of the circulating fluidized bed boiler according to claim 4, wherein the spiral balance (22) is connected with the high fine grinding machine (24) through a first lifting machine (23), and the high fine grinding machine (24) is connected with the powder selecting machine (26) through a second lifting machine (25).
6. The comprehensive utilization system for circulating fluidized bed boiler desulfurization of slurry red mud according to claim 4, wherein the fly ash bin (21) is in butt joint with the cyclone separator (8) and a slag discharging port at the bottom of a circulating fluidized bed boiler furnace (7) through a tank truck (11), and an exhaust outlet at the top of the first bag type dust collector (27) is communicated with the second exhaust fan (28).
7. The comprehensive utilization system for desulfurization of the circulating fluidized bed boiler according to claim 1, wherein an inlet end of the red mud slurry pond (13) is further connected with a red mud pond II (12), an overflow port is arranged on the red mud pond II (12), and the overflow port is communicated with the red mud slurry pond (13).
8. The comprehensive utilization system for desulfurization of the circulating fluidized bed boiler according to claim 1, wherein an exhaust fan I (16) and a chimney (17) are further connected to the top of the desulfurizing tower (15) in sequence.
9. The comprehensive utilization system for circulating fluidized bed boiler desulfurization of slurry red mud according to claim 1, wherein the wet desulfurization product treatment system comprises a desulfurization red mud storage bin (29), a conveying and weighing device, a drying crusher (34), a coarse separator (35), a cyclone dust collector (36) and a bag type dust collector II (37) which are sequentially connected, wherein the bottoms of the cyclone dust collector (36) and the bag type dust collector II (37) are communicated with a storage warehouse (38).
10. The comprehensive utilization system for desulfurization of a circulating fluidized bed boiler according to claim 9, wherein the conveying and weighing device comprises a plate feeder (30), a belt conveyor (31), a weighing bin (32) and a belt scale (33) which are sequentially connected, the plate feeder (30) is connected with the bottom of the desulfurization red mud bin (29), and the belt scale (33) is connected with a drying crusher (34); and the top waste gas outlet of the second bag type dust collector (37) is communicated with the third exhaust fan (40).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202321727187.6U CN220567224U (en) | 2023-07-03 | 2023-07-03 | Comprehensive utilization system for desulfurizing circulating fluidized bed boiler by using pasty red mud |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202321727187.6U CN220567224U (en) | 2023-07-03 | 2023-07-03 | Comprehensive utilization system for desulfurizing circulating fluidized bed boiler by using pasty red mud |
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| CN220567224U true CN220567224U (en) | 2024-03-08 |
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