CN201132104Y - Desulfurizing device via method for oxidizing lime/carbide mud residue -gypsum out of the tower - Google Patents
Desulfurizing device via method for oxidizing lime/carbide mud residue -gypsum out of the tower Download PDFInfo
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- CN201132104Y CN201132104Y CNU2007201918162U CN200720191816U CN201132104Y CN 201132104 Y CN201132104 Y CN 201132104Y CN U2007201918162 U CNU2007201918162 U CN U2007201918162U CN 200720191816 U CN200720191816 U CN 200720191816U CN 201132104 Y CN201132104 Y CN 201132104Y
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Abstract
The utility model discloses a column oxidation lime/carbide slag-gypsum method desulfurizing device, which comprises a fume processing unit; a lime/carbide slag slurry preparation unit used for preparing and transferring lime/carbide slag slurry for the fume processing unit; and a desulphurization gypsum processing unit used for processing the desulphurization gypsum discharged by the fume processing unit; the fume processing unit comprises a main fan, a desulfurizing tower, a booster fan, a oxidation fan and a oxidation tank, wherein, the air outlet opening of the main fan is divided into two paths, one path is communicated with the desulfurizing tower, the other path is communicated with the air inlet opening of the booster fan, the air outlet opening of the booster fan and the outlet of the desulphurization slurry of the desulfurizing tower are all communicated with the oxidation tank, the oxidation tank is communicated with the air inlet opening of the main fan through the air outlet flue of the oxygen tank, and the air outlet opening of the oxygen fan is communicated with the oxygen tank. Compared with the prior lime/carbide slag-gypsum method, the device provided by the utility model not only reduces the investment and the running cost, but also ensures that the quality of the by-product desulphurization gypsum is higher.
Description
Technical field
The utility model relates to a kind of flue gas desulfur device, relates in particular to a kind of flue gas desulfur device of tower external oxidation.
Background technology
Limestone/lime-gypsum method flue gas desulfurization technique just began to occur in the 60 to 70's of twentieth century, had become the most ripe technology in flue gas desulfurization field.Since the oxidation of calcium sulfite need be under lower pH value could quick oxidation, so the method that early stage limestone-gypsum method all adopts the tower external oxidation to add acid adjusting lime slurry pH value prepares desulfurated plaster, develop the sulfur removal technology that low pH value absorption, oxidation in the tower subsequently gradually, improved the reliability of desulphurization system, simultaneously the by-product desulfurated plaster.
A kind of double circulation loop process for flue gas desulfurization by limestone/lime-gypsum wet method is disclosed in the Chinese invention patent application 200610200285.9, adopt double loop desulfurizing tower spray system, each circuit system has relatively independent spraying layer, slurry circulating pump and slurries gathering-device, has connecting pipe to be communicated with between two slurries gathering-devices.Double loop desulfurizing tower spray system is moved under different pH, and the pH of last loop slurries is controlled at 5.5-6.8, and the pH of following loop slurries is controlled at 4-5.Technological process is: flue gas in the desulfurizing tower following loop slurries circulating box and following loop spraying layer between enter, at first with the slurries haptoreaction of following loop spraying layer ejection, cool simultaneously, up spray the further haptoreaction of the slurries that get off with last loop spraying layer then, the clean flue gas after the desulfurization discharges through behind the demister.Lime stone slurry is transported in the slurries circulating box of loop, is collected into the last loop slurries catch tray that is arranged in the desulfurizing tower middle part through reacted slurries, gets back to loop slurries circulating box by pipeline.Part slurries in the slurries circulating box of last loop are delivered to the following loop slurries circulating box of desulfurizing tower bottom by connecting pipe, and the slurries behind spray and smoke reaction are got back to down loop slurries circulating box.Blast air from the desulfurizing tower bottom, the calcium sulfite slurries in the slurries circulating box of following loop are oxidized to the calcium sulfate slurries,, deliver to gypsum dehydration system by the gypsum excavationg pump.
What existing lime-gypsum method generally adopted is that two-part double-cycle process or tower external oxidation prepare desulfurated plaster technology.All flue gas passes through twice absorption, the desulfuration efficiency height, but liquid-gas ratio is bigger, and the height of two desulfurizing towers or increase desulfurizing tower need be set, and cost is also than higher on device.
Summary of the invention
The utility model proposes a kind of reduction investment and operating cost, simultaneously the higher tower external oxidation lime/acetylene sludge-gypsum process flue gas desulfur device of quality of desulphurization gypsum of by-product.
A kind of tower external oxidation lime/acetylene sludge-gypsum process desulphurization device comprises:
Fume treatment unit;
Lime/carbide slag slurry preparation unit is used for preparation and carries lime/carbide slag slurry to fume treatment unit;
The desulfurated plaster processing unit is used for the desulfurated plaster that the smoke treatment processing unit is discharged;
Described fume treatment unit, comprise main air blower, desulfurizing tower, booster fan, oxidation fan and oxidation tank, wherein the main air blower air outlet is divided into two-way, one the tunnel is connected with desulfurizing tower, another road is connected with the air inlet of booster fan, the outlet of the desulfurization slurry of booster fan air outlet and desulfurizing tower all is communicated with oxidation tank, and oxidation tank is communicated with the air inlet of main air blower by the oxidation tank flue of giving vent to anger, and the oxidation fan air outlet is communicated with oxidation tank.
The desulfurization slurry outlet of described desulfurizing tower and the pipeline between oxidation tank are provided with the slurries excavationg pump.
Be provided with smoke washer in the described oxidation tank, the desulfurization slurry outlet of booster fan air outlet and desulfurizing tower all is communicated with smoke washer.
Described oxidation tank and oxidation tank are given vent to anger and are provided with demister between flue.
Be provided with agitator in the described oxidation tank.
Described lime/carbide slag slurry preparation unit comprises lime warehouse, conveying worm, weighing jar, lime slaker, ashing pump, lime white flow container and the lime white liquid pump of connecting successively, and wherein the lime slurry pump discharge is communicated with desulfurizing tower.
Described desulfurated plaster processing unit, comprise gypsum excavationg pump, hydraulic cyclone station, vacuum band-type filter machine, moisture trap, filter cake flush box, filter cake flush water pump and filtrate tank, described hydraulic cyclone station and oxidation tank pass through pipeline connection, be provided with the gypsum excavationg pump in the pipeline, the underflow outlet of hydraulic cyclone station is communicated with vacuum band-type filter machine, and the filtrate (liquid of vacuum band-type filter machine is communicated with filtrate tank.
The flow process of utilizing the utility model device to carry out flue gas desulfurization is:
The flue gas that comes out from boiler is gone into main air blower through dedusting is laggard, main air blower outlet flue gas (initial flue gas) is divided into two-way, most of flue gas enters desulfurizing tower, the desulfurizing tower import is provided with the cooling spray equipment, through the cooling cooled smoke in desulfurizing tower from bottom to top with top-down lime/carbide slag slurry haptoreaction, again through entering smoke stack emission behind the demister; The fraction flue gas enters oxidation tank by a booster fan, is provided with smoke washer in the oxidation tank, and sulfur in smoke is absorbed, and the pH value that is used to regulate oxidation tank makes it to help the oxidation of calcium sulfite.Because the pH value in the oxidation tank is lower, can not qualified discharge through the fraction flue gas of washing, so still get back to the main air blower import, and enter desulfurizing tower and carry out desulfurization, guarantee overall desulfuration efficiency.Desulfurizing tower sodalime/carbide slag slurry becomes desulfurization slurry after absorbing sulfur dioxide, and desulfurization slurry enters into oxidation tank by the slurries excavationg pump, with the fraction smoke reaction, removes unnecessary absorbent lime/carbide slag in oxidation tank, reduces the pH value.The air catalytic oxidation of coming in oxidation fan simultaneously becomes desulfurated plaster with wherein calcium sulfite oxidation, promptly forms the desulfurated plaster slurries.To rotational flow station, get back in the desulfurizing tower, guarantees the seed concentration in the desulfurizing tower, prevents fouling by the top rarer desulfurated plaster slurries of stream by the gypsum excavationg pump for the desulfurated plaster slurries.The desulfurated plaster slurries that underflow is thicker enter vacuum band-type filter machine, make desulfurated plaster after dehydration.Filtrate is collected reservoir, and most of filtrate is got back to the preparation that lime slaker is used for lime/carbide slag slurry, and fraction filtrate is gone wastewater treatment.
The utility model device and prior art the lime-gypsum method desulfurizer compare and not only reduced investment and operating cost, the quality of desulphurization gypsum of by-product is higher simultaneously.
Description of drawings
Fig. 1 is that fume treatment unit is formed schematic diagram in the utility model device;
Fig. 2 is the utility model device main assembly schematic diagram;
Among each figure:
1, desulfurizing tower 2, circulating pump 3, lime warehouse
4, conveying worm 5, weighing jar 6, lime slaker
7, ashing pump 8, lime white flow container 9, lime white liquid pump
10, slurries excavationg pump 11, oxidation tank 12, gypsum excavationg pump
13, booster fan 14, oxidation fan 15, hydraulic cyclone station
16, vacuum band-type filter machine 17, filtrate tank 18, time liquid pump
19, moisture trap 20, filter cake flush box 21, filter cake flush water pump
22, vavuum pump 23, oxidation tank air inlet flue 24, the oxidation tank flue of giving vent to anger
25, accident pool 26, accident pump 27, smoke washer
28, demister 29, main air blower 30, chimney
31, fresh water (FW) 32, desulfurated plaster 33, waste water
The specific embodiment
As shown in Figure 1, the utility model tower external oxidation lime/acetylene sludge-gypsum process desulphurization device, fume treatment unit comprises main air blower 29, desulfurizing tower 1, booster fan 13, oxidation fan 14 and oxidation tank 11, wherein main air blower 29 air outlets are divided into two-way, one the tunnel is connected with desulfurizing tower 1, another road is connected with the air inlet of booster fan 13, the desulfurization slurry outlet of booster fan 13 air outlets and desulfurizing tower 1 all is communicated with oxidation tank 11, oxidation tank 11 is communicated with the air inlet of main air blower 29 by the oxidation tank flue 24 of giving vent to anger, and oxidation fan 14 air outlets are communicated with oxidation tank 11.
The pipeline that the desulfurization slurry outlet of desulfurizing tower 1 and oxidation tank are 11 is provided with slurries excavationg pump 10.
Be provided with smoke washer 27 in the oxidation tank 11, the desulfurization slurry outlet of booster fan 13 air outlets and desulfurizing tower 1 all is communicated with smoke washer 27.Oxidation tank 11 and oxidation tank 24 of the flues of giving vent to anger are provided with demister 28.Be provided with agitator in the oxidation tank 11.
As shown in Figure 2, the lime of the utility model tower external oxidation lime/acetylene sludge-gypsum process desulphurization device/carbide slag slurry preparation unit, the lime warehouse 3, conveying worm 4, weighing jar 5, lime slaker 6, ashing pump 7, lime white flow container 8 and the lime white liquid pump 9 that comprise series connection successively, wherein 9 outlets of lime white liquid pump are communicated with desulfurizing tower 1.
The desulfurated plaster processing unit, comprise gypsum excavationg pump 12, hydraulic cyclone station 15, vacuum band-type filter machine 16 and filtrate tank 17, pipeline connection is passed through with oxidation tank 11 in hydraulic cyclone station 15, be provided with gypsum excavationg pump 12 in the pipeline, the 15 underflows outlet of hydraulic cyclone station is communicated with vacuum band-type filter machine 16, and the filtrate (liquid of vacuum band-type filter machine 16 is communicated with filtrate tank 17.
Utilize the flow process of the utility model tower external oxidation lime/acetylene sludge-gypsum process desulphurization device smoke treatment to be:
The flue gas that comes out from boiler is gone into main air blower 29 through dedusting is laggard, main air blower 29 outlet flue gases (initial flue gas) are divided into two-way, wherein major part enters desulfurizing tower 1, this partial fume is in desulfurizing tower 1 and lime/carbide slag slurry reaction, chimney 30 from desulfurizing tower 1 top after purifying discharges, desulfurizing tower 1 can be plate columns such as rotating stream tray scrubber, sieve-plate tower, bubble column, and packed tower, venturi, spray column etc.
Lime or carbide slag are stored in the lime warehouse 3, enter lime slaker 6 by conveying worm 4 and weighing jar 5, ashing pump 7 imports lime white flow container 8 again, and the lime/carbide slag slurry in the lime white flow container 8 is transported in the desulfurizing tower 1 by lime white liquid pump 9 as required.Lime/carbide slag slurry forms desulfurization slurry after entering desulfurizing tower 1 and smoke reaction, and desulfurization slurry is discharged to oxidation tank 11 by slurries excavationg pump 10.
Be provided with smoke washer 27 in the oxidation tank 11, in oxidation tank 11, another road of main air blower 29 outlet flue gases (initial flue gas) enters in the oxidation tank 11 by booster fan 13, in smoke washer 27 and desulfurization slurry reaction from slurries excavationg pump 10, remove the intact lime of unreacted in the desulfurization slurry, reduce pH value, simultaneously desulfurization slurry and from the air reaction of oxidation fan 14, oxidation makes desulfurated plaster.
Getting back to main air blower 29 air inlets through reacted flue gas after by demister 28 in the oxidation tank 11 enters in the desulfurizing tower 1 again.
Desulfurization slurry was converted into the desulfurated plaster slurries after oxidation reaction finished in the oxidation tank 11, the desulfurated plaster slurries enter hydraulic cyclone station 15 by gypsum excavationg pump 12 to be separated, the top at hydraulic cyclone station 15 flow back in the desulfurizing tower 1, and underflow gets desulfurated plaster 32 after entering vacuum band-type filter machine 16 dehydrations.The filtrate of vacuum band-type filter machine 16 enters filter cake flush box 20 by moisture trap 19, filter cake to vacuum band-type filter machine 16 washes as required, filtrate in the filter cake flush box 20 can be transported to filtrate tank 17 by filter cake flush water pump 21, most of filtrate is gone lime slaker 6 reuses by returning liquid pump 18 in the filtrate tank 17, and fraction filtrate is that waste water 33 goes wastewater treatment.Moisture trap 19 is isolated gas phase by vavuum pump 22.The used fresh water (FW) of each equipment can feed by fresh water (FW) pipeline 31.
When needs overhaul or have an accident, can import in accident pool 25 temporary by accident pump 26 lime slurry in the desulfurizing tower 1.
Claims (7)
1, a kind of tower external oxidation lime/acetylene sludge-gypsum process desulphurization device comprises:
Fume treatment unit;
Lime/carbide slag slurry preparation unit is used for preparation and carries lime/carbide slag slurry to fume treatment unit;
The desulfurated plaster processing unit is used for the desulfurated plaster that the smoke treatment processing unit is discharged;
It is characterized in that: described fume treatment unit, comprise main air blower (29), desulfurizing tower (1), booster fan (13), oxidation fan (14) and oxidation tank (11), wherein main air blower (29) air outlet is divided into two-way, one the tunnel is connected with desulfurizing tower (1), another road is connected with the air inlet of booster fan (13), the desulfurization slurry outlet of booster fan (13) air outlet and desulfurizing tower (1) all is communicated with oxidation tank (11), oxidation tank (11) is communicated with the air inlet of main air blower (29) by the oxidation tank flue (24) of giving vent to anger, and oxidation fan (14) air outlet is communicated with oxidation tank (11).
2, tower external oxidation lime as claimed in claim 1/acetylene sludge-gypsum process desulphurization device is characterized in that: the desulfurization slurry outlet of described desulfurizing tower (1) and the pipeline between oxidation tank (11) are provided with slurries excavationg pump (10).
3, tower external oxidation lime as claimed in claim 1/acetylene sludge-gypsum process desulphurization device, it is characterized in that: be provided with smoke washer (27) in the described oxidation tank (11), the desulfurization slurry outlet of booster fan (13) air outlet and desulfurizing tower (1) all is communicated with smoke washer (27).
4, tower external oxidation lime as claimed in claim 1/acetylene sludge-gypsum process desulphurization device is characterized in that: described oxidation tank (11) and oxidation tank are given vent to anger and are provided with demister (28) between flue (24).
5, tower external oxidation lime as claimed in claim 1/acetylene sludge-gypsum process desulphurization device, it is characterized in that: described oxidation tank is provided with agitator in (11).
6, tower external oxidation lime as claimed in claim 1/acetylene sludge-gypsum process desulphurization device, it is characterized in that: described lime/carbide slag slurry preparation unit, the lime warehouse (3), conveying worm (4), weighing jar (5), lime slaker (6), ashing pump (7), lime white flow container (8) and the lime white liquid pump (9) that comprise series connection successively, wherein lime white liquid pump (9) outlet is communicated with desulfurizing tower (1).
7, tower external oxidation lime as claimed in claim 1/acetylene sludge-gypsum process desulphurization device, it is characterized in that: described desulfurated plaster processing unit, comprise gypsum excavationg pump (12), hydraulic cyclone station (15), vacuum band-type filter machine (16) and filtrate tank (17), pipeline connection is passed through with oxidation tank (11) in described hydraulic cyclone station (15), be provided with gypsum excavationg pump (12) in the pipeline, hydraulic cyclone station (15) underflow outlet is communicated with vacuum band-type filter machine (16), and the filtrate (liquid of vacuum band-type filter machine (16) is communicated with filtrate tank (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201918162U CN201132104Y (en) | 2007-10-31 | 2007-10-31 | Desulfurizing device via method for oxidizing lime/carbide mud residue -gypsum out of the tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201918162U CN201132104Y (en) | 2007-10-31 | 2007-10-31 | Desulfurizing device via method for oxidizing lime/carbide mud residue -gypsum out of the tower |
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| Publication Number | Publication Date |
|---|---|
| CN201132104Y true CN201132104Y (en) | 2008-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201918162U Expired - Lifetime CN201132104Y (en) | 2007-10-31 | 2007-10-31 | Desulfurizing device via method for oxidizing lime/carbide mud residue -gypsum out of the tower |
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| CN (1) | CN201132104Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101797466B (en) * | 2009-10-14 | 2012-05-23 | 中国科学院过程工程研究所 | Wet flue gas desulphurizing method utilizing carbide slag slurry and device thereof |
| CN102764580A (en) * | 2012-07-18 | 2012-11-07 | 浙江天蓝环保技术股份有限公司 | White mud/ carbide slag-gypsum wet flue gas desulfurization device and method |
| CN108283873A (en) * | 2018-04-10 | 2018-07-17 | 李威 | A kind of environment-friendly disposal system of exhaust gas |
| CN110182838A (en) * | 2019-06-25 | 2019-08-30 | 湘潭大学 | A kind of modified technique system and method for flue gas desulfurization ash |
-
2007
- 2007-10-31 CN CNU2007201918162U patent/CN201132104Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101797466B (en) * | 2009-10-14 | 2012-05-23 | 中国科学院过程工程研究所 | Wet flue gas desulphurizing method utilizing carbide slag slurry and device thereof |
| CN102764580A (en) * | 2012-07-18 | 2012-11-07 | 浙江天蓝环保技术股份有限公司 | White mud/ carbide slag-gypsum wet flue gas desulfurization device and method |
| CN102764580B (en) * | 2012-07-18 | 2015-08-26 | 浙江天蓝环保技术股份有限公司 | A kind of apparatus and method of white clay/carbide slag-gypsum wet flue gas desulfurizing |
| CN108283873A (en) * | 2018-04-10 | 2018-07-17 | 李威 | A kind of environment-friendly disposal system of exhaust gas |
| CN110182838A (en) * | 2019-06-25 | 2019-08-30 | 湘潭大学 | A kind of modified technique system and method for flue gas desulfurization ash |
| CN110182838B (en) * | 2019-06-25 | 2023-10-17 | 湘潭大学 | Modification process system and method for flue gas desulfurization ash |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20071031 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |