CN102989306B - Flue gas ammonia desulfurization and deslagging system - Google Patents
Flue gas ammonia desulfurization and deslagging system Download PDFInfo
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- CN102989306B CN102989306B CN201210581015.2A CN201210581015A CN102989306B CN 102989306 B CN102989306 B CN 102989306B CN 201210581015 A CN201210581015 A CN 201210581015A CN 102989306 B CN102989306 B CN 102989306B
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Abstract
The invention discloses a flue gas ammonia desulfurization and deslagging system. The flue gas ammonia desulphurization and deslagging system comprises a flue gas desulfurization sub-system, an ammonium sulfate separation sub-system and an ammonium sulfate deslagging sub-system; the flue gas desulfurization sub-system comprises an absorption tower and a flue gas pre-dedusting cooling device arranged at the position of a flue gas inlet of the absorption tower; the ammonium sulfate separation sub-system comprises a primary cyclone, a secondary cyclone, a dehydration centrifugal machine and a fluidized drying bed which are sequentially connected with one another; the ammonium sulfate deslagging sub-system comprises a filtrate tank, a mixing dosing tank and a filter press which are sequentially connected with one another; and a slurry outlet of the absorption tower is connected with the primary cyclone, a purified liquor outlet of the primary cyclone, a purified liquor outlet of the secondary cyclone and a liquid outlet of the dehydration centrifugal machine are connected with the filtrate tank, and accordingly, the three sub-systems are connected into a whole. By means of the flue gas ammonia desulfurization and deslagging system, ammonia escape amount can be reduced, the phenomenon of acid rain can be effectively relieved, utilization ratios of absorbents are increased, recovery rates of ammonium sulfate products are increased, qualities of the ammonium sulfate products are improved, occupied space areas are small, space is saved, and the system can be generally used in ammonia flue gas desulfurization of thermal power generation and sintering flue gases.
Description
Technical field
The present invention relates to the flue-gas purification equipment of thermal power generation and steel industry, refer to a kind of flue gas ammonia method desulfurizing slag removing system particularly.
Background technology
Mainly adopt coal as fuel in thermal power generation and steel industry, coal dust firing, while providing required thermal source and electric power resource, also can bring serious sulfur dioxide SO
2pollute.According to statistics, the total sulfur dioxide of the annual coal fired power plant discharge of China is up to 2,549 ten thousand tons, and the acid rain region of causing thus, close to 40% of area, brings huge loss to China's ecological environment and industrial and agricultural production.Therefore, fundamentally coal fired power plant and steel industry sulfur dioxide in sintering flue gas SO is controlled
2discharge, extremely urgent.
At present, for the desulfur technology of coal-fired flue-gas and sinter fume, mainly adopt limestone-gypsum doctor treatment, Sea water respiratory distress syndrome, circulating fluid bed flue-gas desulfurizing method and wet type ammoniacal liquor doctor treatment etc.Desulfurization method of limestone-gypsum and Sea water respiratory distress syndrome exist that floor space is large, system complex, the defect that energy consumption is large, operating cost is high.Although circulating fluid bed flue-gas desulfurizing method system is simple, floor space is little, operating cost is low, high to the quality requirement of desulfurizing agent, and desulfuration byproduct calcium sulfite is difficult to comprehensive utilization.Wet type ammoniacal liquor doctor treatment have floor space little, investment and operating cost is low, desulfuration byproduct is the advantage such as valuable chemical raw material and crops chemical fertilizer.
But the wet type ammoniacal liquor doctor treatment phenomenon that ubiquity the escaping of ammonia rate is high on the one hand, plume is long, causes the problems such as absorbent loss is large, ammonia utilization rate is not high, the ammonium sulfate products rate of recovery is low; Carry dust in sinter fume on the other hand more, after the purification of head deduster, the granularity of dust of collection at large is mostly 3um, and granularity is very thin, is not easy to remove totally.In ammonia-ammonium sulfate method desulphurization system, arrange solution, the suspension brought into by ammoniacal liquor, fresh water (FW) and can not get rid of timely primarily of the flue dust lime-ash in the flue gas of loop slurry absorption, enrichment in sulphur ammonium slurries, and then affect the quality of byproduct ammonium sulfate and the stable operation of system.Remove lime-ash can adopt filtration or depositing technology, but because of the main component of flue dust be inorganic particle, grain diameter is very little, and its sedimentation time is longer, and liquid-solid boundary is not obvious, need larger sedimentation basin, and separating effect is bad.Secondly, the lime-ash fine size in precipitation concentration liquid, does not reach the instructions for use of the dehydration equipments such as plate and frame type filter-press yet, and precipitation concentration liquid cannot normally dewater, and causes difficulty to subsequent treatment.
Summary of the invention
Object of the present invention will provide a kind of flue gas ammonia method desulfurizing slag removing system exactly.This system, based on wet ammonia process desulfurizing system, can reduce amount of ammonia slip, effectively alleviates acid rain phenomenon, improves absorbent utilization rate, increases the ammonium sulfate products rate of recovery.
For achieving the above object, the flue gas ammonia method desulfurizing slag removing system designed by the present invention, comprise flue gas desulfurization subsystem, sulphur ammonium isolated subsystem and sulphur ammonium slagging-off subsystem, its special character is:
Described flue gas desulfurization subsystem comprises absorption tower, silk screen Despumation device is disposed with from top to bottom between the top exhanst gas outlet on described absorption tower and sidewall smoke inlet, demister, water washing device and absorbent spray equipment, described adsorption tower smoke porch is provided with the pre-dedusting heat sink of flue gas, the bottom liquid storage tank on described absorption tower is connected with the input of circulation slurry pump, described loop slurry delivery side of pump respectively dedusting heat sink pre-with absorbent spray equipment and flue gas is connected, the bottom liquid storage tank on described absorption tower is also connected with ammoniacal liquor device for supplying and oxygen device for supplying, the serum outlet on described absorption tower is connected with the input of sulphur ammonium slurries rear pump,
Described sulphur ammonium isolated subsystem comprises one-level cyclone, the entrance of described one-level cyclone exports delivery side of pump with sulphur ammonium slurries and is connected, the serum outlet of described one-level cyclone is connected with the entrance of second cyclone with baffle-box pump by eddy flow baffle-box successively, the serum outlet of described second cyclone is connected with the inlet of dewatering centrifuge, and the discharging opening of described dewatering centrifuge is connected with fluidizing drying bed charging aperture by batcher;
Described sulphur ammonium slagging-off subsystem comprises filtrate receiver, the input of described filtrate receiver is connected with the liquid outlet of dewatering centrifuge with the purified liquor outlet of one-level cyclone, the purified liquor outlet of second cyclone simultaneously, the output of described filtrate receiver is connected by the inlet of filtrate pump with mixing dosing tank, and the liquid outlet of described mixing dosing tank is by being connected with the input port of filter press except pulp pump.
Further, the bottom liquid storage tank on described absorption tower is outside equipped with jet pump, the input of described jet pump is connected with the bottom liquid storage tank on absorption tower, and described jet delivery side of pump is connected with jet agitator, and described jet agitator is arranged in the bottom liquid storage tank on absorption tower.Like this, the disturbance of absorbent slurry in liquid storage tank can be increased, improve the activity of absorbent slurry, make the fully mixing such as ammoniacal liquor, oxygen.
Further, the output of described ammoniacal liquor device for supplying is divided into two-way: a road is connected with the input of jet pump, and another road is connected with the output of oxygen device for supplying, and the output of described oxygen device for supplying is connected with the bottom liquid storage tank on absorption tower.Like this, liquid ammoniacal liquor can be made to gasify as early as possible under the synergy of jet pump and oxygen device for supplying, with the violent disturbance of absorbent slurry generation gas-liquid two-phase, reach well-mixed effect.
Further, the pre-dedusting heat sink of described flue gas is equipped with fresh water (FW) device for supplying, the output of described fresh water (FW) device for supplying is connected with the spray head of the pre-dedusting heat sink of flue gas, and the pre-delivery port of dedusting heat sink of described flue gas is connected with the input of filtrate receiver.Like this, fresh water (FW) enters filtrate receiver, re-uses after treatment after carrying out pre-dedusting cooling to flue gas.
Further, booster fan is provided with between the pre-dedusting heat sink of described flue gas and smoke conveying duct.Like this, effectively can overcome flue gas resistance, accelerate flue gas desulfurization process, improve smoke desulfurization efficiency.
Further, the output of described filtrate receiver is also connected with the liquid mouth that returns on absorption tower by filtrate pump, like this, can utilization process water, saving water resource.
Further, the clear liquid delivery outlet of described filter press is connected with the input of filtrate receiver.Like this, be also utilization process water, saving water resource.
Further, described filter press is folded spiral shell formula filter press.Like this, the separating effect of mud and clear liquid can be improved.
The invention has the advantages that: the synergistic combination utilizing silk screen Despumation device in absorption tower, demister, water washing device and absorbent spray equipment, the escaping of ammonia rate can be reduced, and to solve in plume sulfur dioxide with the problem of fume emission.The mode adopting dosing to concentrate, dewater, can solve the too high problem impacted sulphur ammonium quality of cinder content in desulfurizer.For traditional spray column, effectively eliminate the droplet particle carried in flue gas, greatly reduce chimney and to rain phenomenon.Further, by the function that the sludge concentration and dewatering of filter press self is integrated, eliminate the clarification concentration basin on traditional approach, reduce floor space, save space.Meanwhile, ammonia utilization rate of the present invention is high, sulphur ammonium output is high, quality better, can generally be applicable to the ammonia type flue gas desulfurizing such as thermal power generation, sinter fume.
Accompanying drawing explanation
Accompanying drawing is a kind of structural representation of flue gas ammonia method desulfurizing slag removing system.
In figure: smoke conveying duct 1, booster fan 2, the pre-dedusting heat sink 3 of flue gas, absorption tower 4, absorbent spray equipment 5, water washing device 6, demister 7, silk screen Despumation device 8, circulation slurry pump 9, oxygen device for supplying 10, sulphur ammonium slurries rear pump 11, jet pump 12, ammoniacal liquor device for supplying 13, one-level cyclone 14, eddy flow baffle-box 15, baffle-box pump 16, second cyclone 17, dewatering centrifuge 18, batcher 19, fluidizing drying bed 20, filtrate receiver 21, filtrate pump 22, mixing dosing tank 23, except pulp pump 24, filter press 25, fresh water (FW) device for supplying 26, jet agitator 27.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Flue gas ammonia method desulfurizing slag removing system shown in figure, combines primarily of flue gas desulfurization subsystem, sulphur ammonium isolated subsystem and sulphur ammonium slagging-off subsystem.
Flue gas desulfurization subsystem has absorption tower 4, silk screen Despumation device 8, demister 7, water washing device 6 and absorbent spray equipment 5 is disposed with from top to bottom between the top exhanst gas outlet on absorption tower 4 and sidewall smoke inlet, booster fan 2, the pre-dedusting heat sink 3 of flue gas is disposed with between smoke conveying duct 1 and absorption tower 4 smoke inlet, the pre-dedusting heat sink 3 of flue gas is equipped with fresh water (FW) device for supplying 26, and its output is connected with the spray head of the pre-dedusting heat sink 3 of flue gas.The bottom liquid storage tank on absorption tower 4 is connected with the input of circulation slurry pump 9, the output of circulation slurry pump 9 respectively dedusting heat sink 3 pre-with absorbent spray equipment 5 and flue gas is connected, jet agitator 27 is provided with in the bottom liquid storage tank on absorption tower 4, the bottom liquid storage tank on absorption tower 4 is outside equipped with jet pump 12, the input of jet pump 12 is connected with the liquid storage tank on absorption tower 4, and the output of jet pump 12 is connected with jet agitator 27.The bottom liquid storage tank on absorption tower 4 is also connected with ammoniacal liquor device for supplying 13 and oxygen device for supplying 10, the output of ammoniacal liquor device for supplying 13 is divided into two-way: a road is connected with the input of jet pump 12, another road is connected with the output of oxygen device for supplying 10, and the output of oxygen device for supplying 10 is connected with the bottom liquid storage tank on absorption tower 4.The serum outlet on absorption tower 4 is connected with the input of sulphur ammonium slurries rear pump 11.
Sulphur ammonium isolated subsystem has one-level cyclone 14, the entrance of one-level cyclone 14 is connected with the output of sulphur ammonium slurries rear pump 11, the serum outlet of one-level cyclone 14 is connected with the entrance of baffle-box pump 16 with second cyclone 17 by eddy flow baffle-box 15 successively, the serum outlet of second cyclone 17 is connected with the inlet of dewatering centrifuge 18, the discharging opening of dewatering centrifuge 18 by batcher 19 with fluidizing drying bed 20 charging aperture be connected.
Sulphur ammonium slagging-off subsystem has filtrate receiver 21, the input of filtrate receiver 21 simultaneously with the delivery port of the pre-dedusting heat sink 3 of flue gas, the purified liquor outlet of one-level cyclone 14, the purified liquor outlet of second cyclone 17 is connected with the liquid outlet of dewatering centrifuge 18, the output of filtrate receiver 21 is connected with the input of filtrate pump 22, the output of filtrate pump 22 is divided into two-way: a road is connected with the liquid mouth that returns on absorption tower 4, another road is connected with the inlet of mixing dosing tank 23, the liquid outlet of mixing dosing tank 23 is by being connected with the input port of filter press 25 except pulp pump 24, the clear liquid delivery outlet of filter press 25 is connected with the input of filtrate receiver 21.Filter press 25 is folded spiral shell formula filter press, and the mud cake separated can make other purposes.
The operation principle of native system is such: flue gas from smoke conveying duct 1 through booster fan 2 boost after, enter in the pre-dedusting heat sink 3 of flue gas, after the pre-dedusting cooling of absorbent slurry, enter absorption tower 4, the slurries counter current contacting sprayed with absorbent spray equipment 5 is reacted, and removes the sulfur dioxide in flue gas, first reduce the droplet concentration of carrying secretly through water washing device 6, then through the preliminary demist of demister 7, then enter silk screen Despumation device 8 demist process further, finally enter chimney.
The ammoniacal liquor that ammoniacal liquor device for supplying 13 exports is divided into two-way: a road is successively by entering the bottom liquid storage tank on absorption tower 4 after jet pump 12, jet agitator 27 fully mixing, the bottom liquid storage tank on absorption tower 4 is entered after the oxygen that another road and oxygen device for supplying 10 export or air mix, slurries in liquid storage tank deliver to absorbent spray equipment 5 by circulation slurry pump 9, contact with flue gas adverse current, absorb sulfur dioxide wherein; Fraction slurries delivers to Flue Gas Pretreatment Device 3, and the fresh water (FW) that Flue Gas Pretreatment Device 3 according to circumstances also can select recruitment skill water device for supplying 26 to carry carries out dedusting cooling.
After sulfur dioxide in flue gas is absorbed by sprayed slurry, bottom absorption tower 4, liquid storage tank is oxidized, and forms sulphur ammonium crystalloid solution.Squeeze into one-level cyclone 14 by sulphur ammonium slurries rear pump 11 and carry out initial gross separation, the isolated upper clear supernate of one-level cyclone 14 introduces filtrate receiver 21, bottom underflow is squeezed into second cyclone 17 by eddy flow baffle-box 15 and baffle-box pump 16 successively and is separated further, the isolated upper clear supernate of second cyclone 17 gets back to filtrate receiver 21, bottom underflow introduces dewatering centrifuge 18, underflow after dehydration enters fluidizing drying bed 20 through batcher 19, form qualified products sulphur ammonium after drying, stock after packing piling.A slurries part in filtrate receiver 21 is sent back in absorption tower 4 by filtrate pump 22 and is recycled, and another part squeezes into mixing dosing tank 23 by filtrate pump 22, then through delivering to folded spiral shell formula filter press 25 except pulp pump 24, the clear liquid be press-filtered out returns filtrate receiver 21.
Claims (5)
1. a flue gas ammonia method desulfurizing slag removing system, comprises flue gas desulfurization subsystem, sulphur ammonium isolated subsystem and sulphur ammonium slagging-off subsystem, it is characterized in that:
Described flue gas desulfurization subsystem comprises absorption tower (4), silk screen Despumation device (8) is disposed with from top to bottom between the top exhanst gas outlet on described absorption tower (4) and sidewall smoke inlet, demister (7), water washing device (6) and absorbent spray equipment (5), described absorption tower (4) smoke inlet place is provided with the pre-dedusting heat sink (3) of flue gas, the bottom liquid storage tank on described absorption tower (4) is connected with the input of circulation slurry pump (9), the output of described circulation slurry pump (9) respectively dedusting heat sink (3) pre-with absorbent spray equipment (5) and flue gas is connected, the bottom liquid storage tank on described absorption tower (4) is also connected with ammoniacal liquor device for supplying (13) and oxygen device for supplying (10), the serum outlet on described absorption tower (4) is connected with the input of sulphur ammonium slurries rear pump (11),
Described sulphur ammonium isolated subsystem comprises one-level cyclone (14), the entrance of described one-level cyclone (14) is connected with the output of sulphur ammonium slurries rear pump (11), the serum outlet of described one-level cyclone (14) is connected with the entrance of baffle-box pump (16) with second cyclone (17) by eddy flow baffle-box (15) successively, the serum outlet of described second cyclone (17) is connected with the inlet of dewatering centrifuge (18), the discharging opening of described dewatering centrifuge (18) is connected with the charging aperture of fluidizing drying bed (20) by batcher (19),
Described sulphur ammonium slagging-off subsystem comprises filtrate receiver (21), the input of described filtrate receiver (21) simultaneously with the purified liquor outlet of one-level cyclone (14), the purified liquor outlet of second cyclone (17) is connected with the liquid outlet of dewatering centrifuge (18), the output of described filtrate receiver (21) is connected by the inlet of filtrate pump (22) with mixing dosing tank (23), the liquid outlet of described mixing dosing tank (23) is by being connected with the input port of filter press (25) except pulp pump (24), described filter press (25) is folded spiral shell formula filter press,
The bottom liquid storage tank on described absorption tower (4) is outside equipped with jet pump (12), the input of described jet pump (12) is connected with the bottom liquid storage tank of absorption tower (4), the output of described jet pump (12) is connected with jet agitator (27), and described jet agitator (27) is arranged in the bottom liquid storage tank on absorption tower (4);
The output of described ammoniacal liquor device for supplying (13) is divided into two-way: a road is connected with the input of jet pump (12), another road is connected with the output of oxygen device for supplying (10), and the output of described oxygen device for supplying (10) is connected with the bottom liquid storage tank of absorption tower (4).
2. flue gas ammonia method desulfurizing slag removing system according to claim 1, it is characterized in that: the pre-dedusting heat sink (3) of described flue gas is equipped with fresh water (FW) device for supplying (26), the output of described fresh water (FW) device for supplying (26) is connected with the spray head of the pre-dedusting heat sink (3) of flue gas, and the delivery port of the pre-dedusting heat sink (3) of described flue gas is connected with the input of filtrate receiver (21).
3. flue gas ammonia method desulfurizing slag removing system according to claim 1, is characterized in that: be provided with booster fan (2) between the pre-dedusting heat sink (3) of described flue gas and smoke conveying duct (1).
4. flue gas ammonia method desulfurizing slag removing system according to claim 1, is characterized in that: the output of described filtrate receiver (21) is also connected with the liquid mouth that returns of absorption tower (4) by filtrate pump (22).
5. flue gas ammonia method desulfurizing slag removing system according to claim 1, is characterized in that: the clear liquid delivery outlet of described filter press (25) is connected with the input of filtrate receiver (21).
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| CN201210581015.2A CN102989306B (en) | 2012-12-28 | 2012-12-28 | Flue gas ammonia desulfurization and deslagging system |
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|---|---|---|---|---|
| CN103239979B (en) * | 2013-05-17 | 2015-04-22 | 尚诚德 | Economical method for desulfurizing and dedusting glue gas produced during smelting of secondary lead |
| CN103405961B (en) * | 2013-08-22 | 2015-05-27 | 武汉钢铁(集团)公司 | Process and equipment for efficiently removing ash in ammonia process desulfurization slurry by adopting membrane filtration |
| CN105233660B (en) * | 2015-10-13 | 2017-07-18 | 建业庆松集团有限公司 | A kind of processing method of coke oven flue gas processing system |
| CN107321154B (en) * | 2017-05-16 | 2020-08-25 | 上海交通大学 | Ammonia flue gas desulfurization system and method |
| CA3077373A1 (en) * | 2017-10-07 | 2019-04-11 | Marsulex Environmental Technologies Corporation | Conversion equipment for flue gas desulfurization systems and methods of converting calcium-based flue gas desulfurization systems |
| CN107952352A (en) * | 2017-12-26 | 2018-04-24 | 亚太环保股份有限公司 | A kind of catalytic cracking flue gas desulphurization denitration dedusting acid-mist-removing integrated apparatus and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101708412A (en) * | 2009-11-16 | 2010-05-19 | 浙江大学 | Twin tower type recovering sulfur resource ammonia desulfuration equipment and method |
| CN102151480A (en) * | 2011-04-29 | 2011-08-17 | 长沙华泰环保设备工程有限公司 | Boiler flue gas desulfurization method and device |
| CN102451609A (en) * | 2010-10-20 | 2012-05-16 | 中国石油化工股份有限公司 | Pneumatic ammonia method flue gas desulfurizing and dedusting process |
| CN203002204U (en) * | 2012-12-28 | 2013-06-19 | 武汉钢铁(集团)公司 | Ammonia flue gas desulfurization slag removal equipment |
-
2012
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101708412A (en) * | 2009-11-16 | 2010-05-19 | 浙江大学 | Twin tower type recovering sulfur resource ammonia desulfuration equipment and method |
| CN102451609A (en) * | 2010-10-20 | 2012-05-16 | 中国石油化工股份有限公司 | Pneumatic ammonia method flue gas desulfurizing and dedusting process |
| CN102151480A (en) * | 2011-04-29 | 2011-08-17 | 长沙华泰环保设备工程有限公司 | Boiler flue gas desulfurization method and device |
| CN203002204U (en) * | 2012-12-28 | 2013-06-19 | 武汉钢铁(集团)公司 | Ammonia flue gas desulfurization slag removal equipment |
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Effective date of registration: 20170718 Address after: 430083, Hubei Wuhan Qingshan District Factory No. 2 Gate joint stock company organs Patentee after: Wuhan iron and Steel Company Limited Address before: 430080 Wuchang, Hubei Friendship Road, No. A, block, floor 999, 15 Patentee before: Wuhan Iron & Steel (Group) Corp. |
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