CN204017657U - A kind of sintering device flue gas wet desulphurization equipment - Google Patents

A kind of sintering device flue gas wet desulphurization equipment Download PDF

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Publication number
CN204017657U
CN204017657U CN201420507165.3U CN201420507165U CN204017657U CN 204017657 U CN204017657 U CN 204017657U CN 201420507165 U CN201420507165 U CN 201420507165U CN 204017657 U CN204017657 U CN 204017657U
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Prior art keywords
desulfurizing tower
displacement reaction
reaction pond
purifying column
connects
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Expired - Fee Related
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CN201420507165.3U
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Chinese (zh)
Inventor
吴建兴
王健
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WUXI SHENLU HYDRAULIC PARTS Co Ltd
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WUXI SHENLU HYDRAULIC PARTS Co Ltd
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Abstract

A kind of sintering device flue gas wet desulphurization equipment, comprise sintering machine, bellows, sack cleaner, booster fan, desulfurizing tower, dehumidifying purifying column, blower fan, chimney, it is characterized in that: the described sintering machine bellows that are linked in sequence, sack cleaner, booster fan, desulfurizing tower, dehumidifying purifying column, blower fan, chimney, between described bellows and sack cleaner, be connected with electric control valve, described fan outlet is connected with desulfurizing tower air intake, desulfurizing tower air intake lower sides is provided with PH and detects controller, PH detects controller and is connected with desulfur pump by control cables, desulfurizing tower air intake bottom connects aeration displacement reaction pond by pipeline, aeration displacement reaction pond connects sedimentation basin, aeration displacement reaction pond one side is provided with roots blower, opposite side is provided with calcium hydroxide feed bin.The advantages such as the utlity model has desulfuration efficiency high, investment operating cost is low, and reliability is high, and energy consumption is low, safeguards easily, and floor space is little, system long service life.

Description

A kind of sintering device flue gas wet desulphurization equipment
Technical field
The utility model relates to a kind of desulphurization plant of flue gas, especially relates to a kind of sintering device flue gas wet desulphurization equipment.
Background technology
At present, in the coke powder that SINTERING PRODUCTION is used and coal dust, contain sulphur, in 1200 ℃ of high-temperature firing processes of sintering machine, in raw material, approximately have 90% sulphur to generate SO through chemical reaction 2enter sinter fume, the SO of sintering machine discharge 2account for domestic SO 2a big chunk of total emission volumn, is the emission source that is only second to thermal power plant, and the analysis according to sinter fume, has following features:
(1) SO in sinter fume 2change in concentration is very fast and fluctuation of concentration amplitude is large;
(2) flue-gas temperature of sintering discharge fluctuation between 100 ℃~150 ℃ conventionally;
(3) dust concentration in sinter fume is substantially at 100g/Nm 3to 150g/Nm 3between change;
(4) oxygen content of sintering discharge flue gas changes between 14%~18%, and SO in flue gas 2there is certain corresponding relation in the variation of concentration and the variation of oxygen content: SO when oxygen content is on the low side in flue gas 2concentration is higher; SO when oxygen content is higher in flue gas 2concentration is on the low side;
(5) water capacity of sintering discharge flue gas is larger, fluctuation between 8%~10.5% conventionally.
In sum, the flue-gas temperature of sintering machine is relatively low, mostly between 100~150 ℃, residing flue gas environmental condition is more severe, oxygen content as higher in dust concentration, flue gas is higher, water capacity is large, heavy metal concentration is more high, in the situation that adopting sulphur coal, sintering device handpiece flue gas SO 2concentration of emission reach 6000~8000mg/Nm 3, environment is caused to severe contamination, but is not also applicable to the desulphurization plant of sintering device flue gas at present.
Summary of the invention
The utility model, for the problems referred to above, provides a kind of sintering device flue gas wet desulphurization equipment, has desulfuration efficiency high, and investment operating cost is low, reliability is high, and energy consumption is low, safeguards easily, the advantages such as floor space is little, system long service life, process for the desulfurization of metallurgy sintering smoke.
The technical solution of the utility model is: a kind of sintering device flue gas wet desulphurization equipment, comprise sintering machine, bellows, sack cleaner, booster fan, desulfurizing tower, dehumidifying purifying column, blower fan, chimney, it is characterized in that: the described sintering machine bellows that are linked in sequence, sack cleaner, booster fan, desulfurizing tower, dehumidifying purifying column, blower fan, chimney, between described bellows and sack cleaner, be connected with electric control valve, described fan outlet is connected with desulfurizing tower air intake, desulfurizing tower air intake lower sides is provided with PH and detects controller, PH detects controller and is connected with desulfur pump by control cables, desulfurizing tower air intake bottom connects aeration displacement reaction pond by pipeline, aeration displacement reaction pond connects sedimentation basin, aeration displacement reaction pond one side is provided with roots blower, opposite side is provided with calcium hydroxide feed bin, calcium hydroxide feed bin connects discharger, discharger connecting electronic spiral claims, electron helical claims to connect frequency conversion rotary feeder, frequency conversion rotary feeder connects aeration displacement reaction pond, aeration displacement reaction pond pool side is provided with aeration displacement reaction pond PH and detects controller, aeration displacement reaction pond PH detects controller and is connected with frequency conversion rotary feeder by control cables, sedimentation basin connects regulating reservoir, sedimentation basin bottom is provided with the outer discharge pipe of waste liquid, regulating reservoir opposite side is provided with NaOH storage tank, regulating reservoir pool side is provided with regulating reservoir PH and detects controller, regulating reservoir PH detects controller and is connected with electric charging valve by control cables, desulfurizing tower air intake top is provided with nozzle, nozzle top is provided with demister, demister top is provided with exhanst gas outlet, exhanst gas outlet connects dehumidifying purifying column, in dehumidifying purifying column, be provided with damp proof air cleaner, dehumidifying purifying column bottom is provided with the outer discharge pipe of dehumidifying purifying column waste liquid, nozzle is connected with the hose adapter of desulfurizing tower outer wall through desulfurizing tower inwall, hose adapter is connected with shower, shower is fixed on desulfurizing tower outer wall by support, shower is connected with feed tube, feed tube is connected with desulfur pump, desulfur pump connects regulating reservoir.
The beneficial effects of the utility model are: the utlity model has the advantages such as desulfuration efficiency is high, and investment operating cost is low, and reliability is high, and energy consumption is low, safeguards easily, and floor space is little, system long service life.
Compared with prior art, the utlity model has following advantage, economic effect:
1) adopt spray wet desulphurization mode, non-blind area, constantly carries out desulphurization reaction fully, and desulfuration efficiency is up to 98%.
2) NaOH consumption rate is less, and after the circulation of system absorption liquid, in fact main consumption is calcium hydroxide, and operating cost is low.
3) be provided with special efficient dehydration demister, dehydration, demist is effective.
4) system operation adopts controlled circulation liquid pH value control method to guarantee system stable operation.
5) liquid-gas ratio is little, and investment, operating cost is low, and system is anticorrosion, anti-wear performance is reliable, long service life.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is A-A profile in Fig. 1.
Fig. 3 is B-B profile in Fig. 1.
Fig. 1, Fig. 2, in Fig. 3, 1. sintering machine, 2. bellows, 3. electric flow control valve, 4. sack cleaner, 5. booster fan, 6. desulfurizing tower, 7. demister, 8. exhanst gas outlet, 9. damp proof air cleaner, 10. shower, 11. supports, 12. hose adapters, 13. nozzles, 14. feed tubes, 15. desulfurizing tower air intakes, 16. desulfur pumps, 17. calcium hydroxide feed bins, 18. dischargers, 19. electron helicals claim, 20. frequency conversion rotary feeders, 21. aeration displacement reaction ponds, 22. sedimentation basins, 23. regulating reservoirs, the outer discharge pipe of 24. waste liquids, 25. roots blowers, 26. NaOH storage tanks, 27. dehumidifying purifying columns, the outer discharge pipe of 28. dehumidifying purifying column waste liquid, 29. blower fans, 30. chimneys, 31. electric charging valves, 32.PH detects controller, 33. aeration displacement reaction pond PH detect controller, 34. regulating reservoir PH detect controller.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
As Fig. 1, Fig. 2, shown in Fig. 3, the utility model is a kind of sintering device flue gas wet desulphurization equipment, comprise sintering machine 1, bellows 2, sack cleaner 4, booster fan 5, desulfurizing tower 6, dehumidifying purifying column 27, blower fan 29, chimney 30, it is characterized in that: described sintering machine 1 bellows 2 that are linked in sequence, sack cleaner 4, booster fan 5, desulfurizing tower 6, dehumidifying purifying column 27, blower fan 29, chimney 30, between described bellows 2 and sack cleaner 4, be connected with electric control valve 3, described blower fan 5 outlets are connected with desulfurizing tower air intake 15, desulfurizing tower air intake 15 lower sides are provided with PH and detect controller 32, PH detects controller 32 and is connected with desulfur pump 16 by control cables, desulfurizing tower air intake 15 bottoms connect aeration displacement reaction pond 21 by pipeline, aeration displacement reaction pond 21 connects sedimentation basin 22, aeration displacement reaction pond 21 1 sides are provided with roots blower 25, opposite side is provided with calcium hydroxide feed bin 17, calcium hydroxide feed bin 17 connects discharger 18, discharger 18 connecting electronic spirals claim 19, electron helical claims 19 connection frequency conversion rotary feeders 20, frequency conversion rotary feeder 20 connects aeration displacement reaction pond 21, aeration displacement reaction pond 21 pool sides are provided with aeration displacement reaction pond PH and detect controller 33, aeration displacement reaction pond PH detects controller 33 and is connected with frequency conversion rotary feeder 20 by control cables, sedimentation basin 22 connects regulating reservoir 23, sedimentation basin 22 bottoms are provided with the outer discharge pipe 24 of waste liquid, regulating reservoir 23 opposite sides are provided with NaOH storage tank 26, regulating reservoir 23 pool sides are provided with regulating reservoir PH and detect controller 34, regulating reservoir PH detects controller 34 and is connected with electric charging valve 31 by control cables, desulfurizing tower air intake 15 tops are provided with nozzle 13, nozzle 13 tops are provided with demister 7, demister 7 tops are provided with exhanst gas outlet 8, exhanst gas outlet 8 connects dehumidifying purifying column 27, in dehumidifying purifying column 27, be provided with damp proof air cleaner 9, dehumidifying purifying column 27 bottoms are provided with the outer discharge pipe 28 of dehumidifying purifying column waste liquid, nozzle 13 is connected with the hose adapter 12 of desulfurizing tower 6 outer walls through desulfurizing tower 6 inwalls, hose adapter 12 is connected with shower 10, adopting hose adapter 12 objects is to be convenient to install, repair demolition is convenient, shower 10 is fixed on desulfurizing tower 6 outer walls by support 11, shower 10 is connected with feed tube 14, feed tube 14 is connected with desulfur pump 16, desulfur pump 16 connects regulating reservoir 23.
The course of work of the present utility model: 120m 2sintering machine 1, exhaust gas volumn 200000Nm 3/ h, SO 2concentration 7500mg/Nm 3, dust concentration 120mg/Nm 3, 100~150 ℃ of flue-gas temperatures, sintering machine 1 flue gas enters in bellows 2 by the suction function of blower fan 5, connecting each bellows 2 to main pipeline, be provided with electric flow control valve 3, be used for mating each bellows 2 air quantity, then enter sack cleaner 4, sintering machine 1 ash-laden gas is played to the effect of dedusting, efficiency of dust collection reaches 99.99%, prevent that dust from entering desulfurizing tower 6 and producing obstruction, sintering machine 1 flue gas of process sack cleaner 4 enters desulfurizing tower 6 by the effect of blower fan 5, flue gas from bottom to top, when being laid in the nozzle 13 at desulfurizing tower 6 middle parts, due to gas-liquid counter current, make the doctor solution of nozzle 13 ejections be fluidized state, gas-liquid is fully contacted, flue gas is after nozzle 13 sprays, by efficient demister, remove water smoke, the concentration of demister outlet flue fog drip is less than 75mg/m 3, prevent water droplet corrosion chimney 30, then in dehumidifying purifying column 27 damp proof air cleaner 9, collect the fine solid particle in gas, purify air, further remove water droplet, finally by chimney 30, be discharged in atmosphere.
Adopt NaOH as desulfurization absorbent, desulfurizing agent is squeezed into desulfurizing tower 6 through desulfur pump 16 and fully contact with flue gas, make the sulfur dioxide in flue gas react generation Na with desulfurizing agent NaOH 2sO 3, the Na discharging from desulfurizing tower 6 2sO 3solution, through aeration oxidation, generates Na 2sO 4, by adding calcium hydroxide separating out the regeneration of absorption liquid and solid by-product, through aeration and sodium, the mixed liquor of calcium displacement flows into sedimentation basin 22, supernatant after precipitation Ash Water Separator, send into regulating reservoir 23, in regulating reservoir 23, when pH value is reduced to a certain degree, by regulating reservoir PH, detect after the pH value in controller 34 mensuration regulating reservoirs 23, controlling electric charging valve 31 constantly supplements the NaOH in NaOH storage tank 26 to add in regulating reservoir 23, in desulfurizing tower 6, when pH value is reduced to a certain degree, by PH, detect after the pH value in controller 32 mensuration desulfurizing towers 6, by controlling desulfur pump 16, in desulfurizing tower 6, add desulfurizing agent, so circulation, heavy ash in sedimentation basin 22 is regularly removed, pick up outward transport.
By the conveying device that calcium hydroxide feed bin 17, discharger 18, electron helical claim 19, frequency conversion rotary feeder 20 forms calcium hydroxide, in aeration displacement reaction pond 21, when pH value is reduced to a certain degree, by aeration displacement reaction pond PH, detect after the pH value in controller 33 mensuration aeration displacement reaction ponds 21, after electron helical claims 19 Weighings, by frequency conversion rotary feeder 20, according to the pH value in aeration displacement reaction pond 21, the conveying capacity of adjusting calcium hydroxide by the mode that changes rotating speed, calcium hydroxide is sent in aeration displacement reaction pond 21.
Desulfurization chemical reaction formula:
In absorption tower, absorb SO 2:
2NaOH+SO 2→Na 2SO 3+H 2O
Na 2SO 3+SO 2+H 2O→2NaHSO 3
To absorb SO 2absorption liquid deliver to aeration displacement reaction pond 21, carry out separating out of the oxidation of inferior sulfate radical, the regeneration of absorption liquid and solid by-product.
By roots blower 25, blast air, in aeration displacement reaction pond 21, oxidation reaction occurs.
Oxidation reaction: Na 2sO 3+ 0.5O 2→ Na 2sO 4
By adding calcium hydroxide separating out the regeneration of absorption liquid and solid by-product.
Displacement reaction: Ca (OH) 2+ Na 2sO 4+ 2H 2o → NaOH+CaSO 42H 2o
Ca(OH) 2+Na 2SO 3→2NaOH+CaSO 3
Ca(OH) 2+2NaHSO 3→Na 2SO 3+CaSO 3·0.5H 2O+0.5H 2O
NaOH and the Na of regeneration 2sO 3deng desulfurizing agent, can recycle.
As can be seen here, NaOH consumption rate is less here, and after the circulation of system absorption liquid, in fact main consumption is calcium hydroxide, so operating cost is lower.
The maximum feature of this equipment is that NaOH consumption rate is less by adding calcium hydroxide to the separating out of the regeneration of absorption liquid and solid by-product, and in fact main after the circulation of system absorption liquid what consume is calcium hydroxide, and desulfuration efficiency is up to 98%, and operating cost is lower.
With 120m 2flue gas of sintering machine technique is example, and the utility model and conventional equipment comparison, be described as follows:
Note: work per year and calculate for 330th.
As can be seen here, the utlity model has the advantages such as desulfuration efficiency is high, and investment operating cost is low, and reliability is high, and energy consumption is low, safeguards easily, and floor space is little, system long service life.

Claims (1)

1. a sintering device flue gas wet desulphurization equipment, comprise sintering machine, bellows, sack cleaner, booster fan, desulfurizing tower, dehumidifying purifying column, blower fan, chimney, it is characterized in that: the described sintering machine bellows that are linked in sequence, sack cleaner, booster fan, desulfurizing tower, dehumidifying purifying column, blower fan, chimney, between described bellows and sack cleaner, be connected with electric control valve, described fan outlet is connected with desulfurizing tower air intake, desulfurizing tower air intake lower sides is provided with PH and detects controller, PH detects controller and is connected with desulfur pump by control cables, desulfurizing tower air intake bottom connects aeration displacement reaction pond by pipeline, aeration displacement reaction pond connects sedimentation basin, aeration displacement reaction pond one side is provided with roots blower, opposite side is provided with calcium hydroxide feed bin, calcium hydroxide feed bin connects discharger, discharger connecting electronic spiral claims, electron helical claims to connect frequency conversion rotary feeder, frequency conversion rotary feeder connects aeration displacement reaction pond, aeration displacement reaction pond pool side is provided with aeration displacement reaction pond PH and detects controller, aeration displacement reaction pond PH detects controller and is connected with frequency conversion rotary feeder by control cables, sedimentation basin connects regulating reservoir, sedimentation basin bottom is provided with the outer discharge pipe of waste liquid, regulating reservoir opposite side is provided with NaOH storage tank, regulating reservoir pool side is provided with regulating reservoir PH and detects controller, regulating reservoir PH detects controller and is connected with electric charging valve by control cables, desulfurizing tower air intake top is provided with nozzle, nozzle top is provided with demister, demister top is provided with exhanst gas outlet, exhanst gas outlet connects dehumidifying purifying column, in dehumidifying purifying column, be provided with damp proof air cleaner, dehumidifying purifying column bottom is provided with the outer discharge pipe of dehumidifying purifying column waste liquid, nozzle is connected with the hose adapter of desulfurizing tower outer wall through desulfurizing tower inwall, hose adapter is connected with shower, shower is fixed on desulfurizing tower outer wall by support, shower is connected with feed tube, feed tube is connected with desulfur pump, desulfur pump connects regulating reservoir.
CN201420507165.3U 2014-08-30 2014-08-30 A kind of sintering device flue gas wet desulphurization equipment Expired - Fee Related CN204017657U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108786402A (en) * 2018-06-05 2018-11-13 佛山市易轩软件科技有限公司 A kind of waste gas purification apparatus of environmental protection and energy saving
CN109200693A (en) * 2018-10-31 2019-01-15 广州博昊信息科技有限公司 A kind of desulfuring and denitrifying apparatus of the compressible flue gas of coal-fired plant
CN109847558A (en) * 2017-11-30 2019-06-07 中国石油天然气股份有限公司 A kind of storage tank depriving hydrogen sulphide system and technique

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109847558A (en) * 2017-11-30 2019-06-07 中国石油天然气股份有限公司 A kind of storage tank depriving hydrogen sulphide system and technique
CN108786402A (en) * 2018-06-05 2018-11-13 佛山市易轩软件科技有限公司 A kind of waste gas purification apparatus of environmental protection and energy saving
CN109200693A (en) * 2018-10-31 2019-01-15 广州博昊信息科技有限公司 A kind of desulfuring and denitrifying apparatus of the compressible flue gas of coal-fired plant

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20141217

Termination date: 20160830

CF01 Termination of patent right due to non-payment of annual fee