CN201214045Y - Flue gas desulfurization, denitration, dust exhaustion integrated process equipment - Google Patents
Flue gas desulfurization, denitration, dust exhaustion integrated process equipment Download PDFInfo
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- CN201214045Y CN201214045Y CNU2008201109088U CN200820110908U CN201214045Y CN 201214045 Y CN201214045 Y CN 201214045Y CN U2008201109088 U CNU2008201109088 U CN U2008201109088U CN 200820110908 U CN200820110908 U CN 200820110908U CN 201214045 Y CN201214045 Y CN 201214045Y
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- flue gas
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Abstract
The utility model relates to smoke-gas desulfurization, denitration and dust removal integrated process equipment, which comprises an oxygen supply device, a chemical reactor, a dust collector and the like, wherein the oxygen supply device is formed by the connection of an ozone generator and a gas dissolved machine, and the oxygen supply device is connected with a spraying layer consists of nozzles of a throat opening shrinking area on an inlet of a Venturi tube on the front end of the chemical reactor; a perpendicular type guide plate on the tail end of the chemical reactor is connected with the dust collector; the outer part of a straight tube is connected with a feeder; the chemical reactor comprises the Venturi tube, an elbow arranged on the bottom of the reactor, a white lime distribution plate and the straight tube; the straight tube is connected with the elbow; and the Venturi tube and the elbow form an oxidation area of the reactor, and the straight tube between the white lime distribution plate and the perpendicular type guide plate forms an neutralization area of the reactor. The new-generation smoke-gas desulfurization, denitration and dust removal integrated process equipment has the advantages of high efficiency, low cost and low operating expense.
Description
Technical field
The utility model relates to a kind of brand-new flue gas desulfurization denitration dust-removing integrated technique equipment.
Background technology
The present domestic flue gas desulfurization and denitrification technology that adopt external introduction more, as catalytic reducing smoke out of stock (SCR) technology, lime/lime stone-gypsum wet sulfur removal technology, it is higher that these technologies have purification efficiency, but the absorption tower volume is very huge, and it is big to have floor space, and investment is expensive, operating cost is big, the construction and installation cycle is long, and disadvantages such as operational management difficulty are especially out of stockly also wanted dependence on import with catalyst.For this reason, research and development are used for economic the desulfur denitrate dust collecting integrating technology and the equipment reliably of China's coal-fired plant boiler, Industrial Boiler and other Industrial Stoves, making its industrialization and form production scale, is that China's promotion smoke gas treatment work presses for.
Summary of the invention
The purpose of this utility model is to overcome the weak point that has the desulphurization denitration technology now, and a kind of desulfur denitrate dust collecting efficient height is provided, small investment, the brand-new flue gas desulfurization denitration dust-removing integrated technique equipment that operating cost is low (being called for short NHDD).
The purpose of this utility model is achieved through the following technical solutions.
A kind of flue gas desulfurization denitration dust-removing integrated technique equipment comprises apparatus of oxygen supply, chemical reactor and deduster three parts; Connect molten mechanism of qi by ozone, the apparatus of oxygen supply of constitution equipment, apparatus of oxygen supply are connected to the spraying layer that aditus laryngis shrinking zone, chemical reactor front end venturi inlet position is made up of plurality of nozzles, and the perpendicular type deflector of chemical reactor end connects deduster.
Described chemical reactor adopts the square pipeline reactor to comprise the elbow of Venturi tube, Venturi tube coupled reaction device bottom, and elbow connects the white lime distribution grid, and straight tube is connected with elbow; The zoneofoxidation of Venturi tube and elbow anabolic reaction device, the straight tube between white lime distribution grid and the perpendicular type deflector constitutes the neutral zone of reactor.Straight tube is externally connected to batcher from lime to straight tube that supply with; Batcher is by the fluidisation blower fan of air channel connection device peripheral hardware.
Described molten mechanism of qi is to be made of the outer motor that connects of a housing, in the housing installing be used to mix, the conveyor screw impeller of cutting oxygen and water, the interior bottom of housing is provided with the delivery outlet of oxygen enrichment absorption liquid.
Described batcher is made of the external variable-frequency motor of a housing, is provided with pears cutter impeller in the housing and is connected with variable-frequency motor, and the middle and lower part in the housing is provided with the formula of interrupting and revolves the band impeller, and air permeable belt is arranged at the bottom in the housing; Driving-belt connects variable-frequency motor.
Work the deduster of the effect of gathering dust, can select sack cleaner, perhaps electric-bag complex dust collector.
The advantage of the utility model process equipment is as follows:
1. the square pipeline reactor can be directly installed on the flue, and constitutes an integral body with the deduster gas approach;
2. little, in light weight, transportation simple installation, short construction period of volume;
3. floor space is little, is specially adapted to the transformation of old stove desulphurization denitration;
Reduced investment, operating cost is low but denitrification efficiency height 〉=90%;
5. reactor outlet cigarette temperature more than 15 ℃, need not heat exchanger greater than dew-point temperature;
6. has multiple function, simultaneously desulfur denitrate dust collecting;
7. the desulphurization denitration process does not have the waste liquid generation, and accessory substance is easily handled;
8. modularized design, operation maintenance management is convenient, can realize automation and intellectuality; Guarantee that deduster hangs down load of dust remove＜65g/Nm
3, overcome the big disadvantage of traditional semi-dry desulphurization load of dust remove.
Description of drawings
Fig. 1 is a process equipment schematic flow sheet of the present utility model;
Fig. 2 is that NHDD of the present utility model system facade is arranged schematic diagram;
Fig. 3 is the axial vertical section structure schematic diagram of molten mechanism of qi;
Fig. 4 is the axial vertical section structure schematic diagram of batcher.
Among the figure: 1 ozone generator, 2 ozone, 3 water, 4 molten mechanisms of qi, 5 oxygen enrichment absorption liquids, 6 former flue gases, 7 spraying layers, 8 Venturi tubes, 9 elbows, 10 white lime distribution grids, 11 straight tubes, 12 perpendicular type deflectors, 13 dedusters, 14 clean flue gases, 15 white limes, 16 batchers, 17 hp fluid airs, 18 fluidisation blower fans, 19 conveyor screw impellers, 20 variable-frequency motors, 21 housings, 22 pears cutter impellers, 23 variable-frequency motors, 24 driving-belts, 25 air permeable belts, 26 interrupt formula and revolve the band impeller.
The specific embodiment
Referring to Fig. 1, flue gas desulfurization denitration dust-removing integrated technique equipment is the former flue gas of boiler to be reacted by reaction of reactor generation forced oxidation and acid-base neutralization carry out desulphurization denitration, and the flue gas after the processing carries out dedusting through deduster.Support a whole set of reaction unit of technology of the present invention, comprise ozone generator 1, make concentration greater than 90% ozone 2 by it, ozone 2 cooperates process water 3 to supply with molten mechanism of qi 4, obtain oxygen enrichment absorption liquid 5 through molten mechanism of qi 4, send into reactor, mix, carry out the forced oxidation reaction with the flue gas that enters reactor.
Referring to Fig. 2, reactor of the present utility model adopts the square pipeline reactor, comprises Venturi tube 8, elbow 9, white lime distribution grid 10, straight tube 11, perpendicular type deflector 12, and the desulphurization denitration of flue gas is finished at this; Wherein, Venturi tube 9 and elbow 9 have been formed the zoneofoxidation of reactor, the neutral zone of the straight tube formation reactor between lime distribution grid 10 and the perpendicular type deflector 12 of looking around.Ozone generator 1 makes concentration greater than 90% ozone 2.Work the deduster 13 of the effect of gathering dust and to select sack cleaner or electric-bag complex dust collector.
Zoneofoxidation and the chemical reaction that neutral zone took place are as follows:
1. forced oxidation reaction (in the reactor zoneofoxidation---Venturi tube 8 and elbow 9 parts)
3SO
2+O
3+3H
2O→3H
2SO
4 (1)
SO
3+H
2O→H
2SO
4 (2)
NO
2+3NO+O
3+2O
2+2H
2O→4HNO
3 (3)
The required oxygen enrichment absorption liquid of this technology is by molten mechanism of qi supply, and the amount of process water depends on the humidity and the temperature of former flue gas.
2. acid-base neutralization reaction (straight tube 11 between reactor neutral zone-white lime distribution grid 10 and the perpendicular type deflector 12)
Ca(OH)
2+H
2SO
4→CaSO
4·2H
2O (4)
Ca(OH)
2+2HNO
3+2H
2O→Ca(NO
3)
2·4H
2O (5)
Ca(OH)
2+2HCl→CaCl
2+2H
2O (6)
Ca(OH)
2+2HF→CaF
2+2H
2O (7)
This technology calcium sulfur ratio is 1.1, and reactor neutral zone flue gas relative humidity is less than 20%, and this segment length only needs 6-9m to get final product, flue gas flow rate 9-22m/s.
The former flue gas 6 of boiler output enters through the Venturi tube of reactor bottom elbow 9 porch, be furnished with plurality of nozzles in the aditus laryngis shrinking zone of Venturi tube and form spraying layer 7, oxygen enrichment absorption liquid 5 sprays into the aditus laryngis shrinking zone of Venturi tube after nozzle atomization, be dispersed into fine drop and cover the whole section of aditus laryngis, drop fully contacts with the interior flue gas of aditus laryngis, the high strength mass transfer, carries out desulphurization denitration; Reactant enters the reactor neutral zone with flue gas through the reactor zoneofoxidation of Venturi tube and elbow formation---straight tube 11, supply with white limes 15 by batcher 16 to straight tube 11.The reacted reactant of forced oxidation is in the neutral zone of reactor and the white lime generation neutralization reaction that evenly is blended in the flue gas; Reaction back flue gas carries a large amount of solid particles and enters deduster 13, and solid particle is isolated from flue gas by deduster 13, flows to the byproduct storehouse by pneumatic transport equipment.More than 15 ℃, heat enters chimney through air-introduced machine to flue gas 14 after the cleaning again, finishes the desulphurization denitration process in dew-point temperature.
Referring to Fig. 3, molten mechanism of qi 4 is to connect a motor outside housing, installing conveyor screw impeller 19 in the housing, impeller 19 rotations mix ozone 2 and the water 3 that enters molten mechanism of qi 4 and cutting, make in the ozone 2 abundant water-soluble 3, the oxygen enrichment absorption liquid 5 that makes is sent molten mechanism of qi 4 by the outlet of lower housing portion.
Referring to Fig. 4, batcher 16 by housing 21 external variable-frequency motors 23, has pears cutter impeller 22 to be connected with variable-frequency motor 23 in the housing 21, and the middle and lower part in the housing 21 is provided with the formula of interrupting and revolves band impeller 26, and air permeable belt 25 is arranged at the bottom in the housing 21; Driving-belt 24 connects variable-frequency motor 23.
By chemical reaction, NO, SO in the former flue gas 6
2By the active oxygen oxidation, above-mentioned chemical reaction (1) (2) (3) takes place after, be dissolved in the drop and generate nitric acid and sulfuric acid; Reactant enters reactor neutral zone (straight tube 11) with flue gas through reactor zoneofoxidation (Venturi tube 8 and elbow 9), this moment, flue gas obtained cooling, humidity increases, at reactor neutral zone and the lime 15 that evenly is blended in the flue gas above-mentioned neutralization reaction (4) (5) (6) (7) takes place, main product is calcium nitrate and calcium sulfate.Reacted flue gas carries a large amount of solid particles and enters deduster 13, is separated from flue gas by deduster 13, flows to the byproduct storehouse again by pneumatic transport equipment.More than 15 ℃, heat enters chimney through air-introduced machine to flue gas 14 after the cleaning again in dew-point temperature.White lime 15 is through batcher 16 and to be power with the hp fluid air 17 that fluidisation blower fan 18 provides enter reactor straight tube 11 by the gravitation guide effect of flue negative pressure by the overflow mode, makes it to be evenly distributed in the hot flue gas.
Main device of the present utility model comprises reactor, molten mechanism of qi 4, batcher 16, ozone generator 1, deduster 13, fluidisation blower fan 18, and wherein ozone generator 1, deduster 13 and fluidisation blower fan 18 are apolegamy equipment, and sufficient supply is arranged on the market.
Reactor is mainly by Venturi tube 8, elbow 9, white lime distribution grid 10, straight tube 11, perpendicular type deflector 12 is formed, desulphurization denitration is finished at this, wherein Venturi tube 8 and elbow 9 anabolic reaction device zoneofoxidations, straight tube 11 anabolic reaction device neutral zones between white lime distribution grid 10 and the perpendicular type deflector 12, when flue gas can form a stable flow field during by reactor, be flue gas desulfurization and denitrification and preferable reaction environment of acid-base neutralization reaction creation, perpendicular type deflector 12 can guarantee that flue gas enters deduster with suitable flow velocity and flow field, so that deduster obtains best dust removing effects.
Molten mechanism of qi 4 mainly is made up of uniform pitch conveyor screw impeller 19 and housing 18 etc., the concentration that ozone generator 1 is made is supplied with molten mechanism of qi 4 greater than 90% ozone 2 and process water 3 by design proportion, by impeller to water the face dissection make ozone fully soluble in water, make high oxygen enrichment absorption liquid 5 at last.Batcher 16 mainly revolves band impeller 26, air permeable belt 25 and housing 21 etc. by pears cutter impeller 22, the formula of interrupting to be formed, and is reactor neutral zone (straight tube 11) lime feedway, and multiple functions such as liquid collecting mixes admittedly, block cutting, conveying are in one.
Embodiment
Purifying with the 75T fire coal boiler fume is that example is described as follows:
1) flue gas basic parameter
| Sequence number | Parameter name | Unit | |
| 1 | Smoke eliminator inlet flue gas amount | Nm 3/h | 135000 |
| 2 | Smoke eliminator inlet SO 2Concentration | mg/Nm 3 | 1500 |
| 3 | Smoke eliminator inlet NO xConcentration | mg/Nm 3 | 350 |
| 4 | Smoke eliminator inlet dust concentration | g/Nm 3 | 45 |
| 5 | The smoke eliminator inlet flue gas temperature | ℃ | 143 |
| 6 | Desulfurization degree | ％ | >90 |
| 7 | The denitration rate | ％ | >80 |
| 8 | Dust removal efficiency | ％ | >99.99 |
| 9 | SO 2Concentration of emission | mg/Nm 3 | <150 |
| 10 | NO xConcentration of emission | mg/Nm 3 | <70 |
| 11 | Dust emission concentration | mg/m 3 | <30 |
| 12 | Clean flue-gas temperature | ℃ | >75 |
2) material balance table
| Sequence number | Title | Unit | |
| 1 | SO 2The amount of removing | t/h | 0.19 |
| 2 | NO xThe amount of removing | t/h | 0.04 |
| 3 | Calcium sulfur ratio Ca/S | 1.1 | |
| 4 | Ca(OH) 2Consumption | t/h | 0.29 |
| 5 | The consumption of ozone | t/h | 0.06 |
| 6 | Water consumption | t/h | 4.9 |
3) main technique equipment and technology parameter list
| Sequence number | Title | Specifications and | Remarks | |
| 1 | Reactor | □2×1.2m | Nonstandard | |
| 2 | Molten mechanism of qi | 2.5 | Nonstandard | |
| 3 | Batcher | 9.5KW | Nonstandard | |
| 4 | Deduster | The | Outsourcing | |
| 5 | Ozone generator | 50kg/h，55KW | Outsourcing | |
| 6 | The fluidisation blower fan | 15000Pa，75KW | Outsourcing |
Claims (4)
1. flue gas desulfurization denitration dust-removing integrated technique equipment, comprise apparatus of oxygen supply, chemical reactor and deduster three parts, it is characterized in that: connect molten mechanism of qi (4) by ozone generator (1), the apparatus of oxygen supply of constitution equipment, apparatus of oxygen supply is connected to the spraying layer (7) that chemical reactor front end Venturi tube (8) inlet aditus laryngis shrinking zone, position is made up of plurality of nozzles, and the perpendicular type deflector (12) of chemical reactor end connects deduster (13);
Described chemical reactor comprises the elbow (9) of Venturi tube (8), Venturi tube (8) coupled reaction device bottom, and elbow (9) connects white lime distribution grid (10), and straight tube (11) is connected with elbow (9); The zoneofoxidation of Venturi tube (8) and elbow (9) anabolic reaction device, the straight tube (11) between white lime distribution grid (10) and the perpendicular type deflector (12) constitutes the neutral zone of reactor; Straight tube (11) is externally connected to batcher (16) from lime to straight tube (11) that supply with, and batcher (16) is by the fluidisation blower fan (18) of air channel connection device peripheral hardware.
2. flue gas desulfurization denitration dust-removing integrated technique equipment according to claim 1, it is characterized in that: described molten mechanism of qi (4), be to constitute by the outer motor (20) that connects of a housing, in the housing installing be used to mix, the conveyor screw impeller (19) of cutting oxygen and water, the interior bottom of housing is provided with the delivery outlet of oxygen enrichment absorption liquid.
3. flue gas desulfurization denitration dust-removing integrated technique equipment according to claim 1, it is characterized in that: described batcher (16), constitute by the external variable-frequency motor of a housing (21) (23), being provided with pears cutter impeller (22) in the housing (21) is connected with variable-frequency motor (23), middle and lower part in the housing (21) is provided with the formula of interrupting and revolves band impeller (26), and air permeable belt (25) is arranged at the bottom in the housing (21); Driving-belt (24) connects variable-frequency motor (23).
4. flue gas desulfurization denitration dust-removing integrated technique equipment according to claim 1 is characterized in that: work the deduster (13) of the effect of gathering dust, can select sack cleaner, perhaps electric-bag complex dust collector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201109088U CN201214045Y (en) | 2008-04-29 | 2008-04-29 | Flue gas desulfurization, denitration, dust exhaustion integrated process equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201109088U CN201214045Y (en) | 2008-04-29 | 2008-04-29 | Flue gas desulfurization, denitration, dust exhaustion integrated process equipment |
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|---|---|
| CN201214045Y true CN201214045Y (en) | 2009-04-01 |
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|---|---|---|---|
| CNU2008201109088U Expired - Fee Related CN201214045Y (en) | 2008-04-29 | 2008-04-29 | Flue gas desulfurization, denitration, dust exhaustion integrated process equipment |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101829490A (en) * | 2010-05-14 | 2010-09-15 | 上海龙净环保科技工程有限公司 | Oxygen supply pipe device for wet flue gas desulfurization oxidation |
| CN102327736A (en) * | 2011-06-14 | 2012-01-25 | 于力 | Method and integrated equipment for collecting desulfuration product by ammonia wet desulfuration dry method |
| CN102949921A (en) * | 2012-11-19 | 2013-03-06 | 厦门城力机电设备有限公司 | High-pressure electrostatic dust collection electric field device of coal-fired unit for generating ozone and simultaneously desulfurizing and denitrating |
| WO2015054929A1 (en) * | 2013-10-15 | 2015-04-23 | 中国科学院过程工程研究所 | Combined desulfuration, denitration, and mercury removal apparatus and method using semidry process in circulating fluidized bed |
| CN106563329A (en) * | 2015-10-09 | 2017-04-19 | 冀文平 | Dry and wet dual-use mixed gas apparatus for organic flue gas, and technology thereof |
| CN106563341A (en) * | 2015-10-09 | 2017-04-19 | 冀文平 | Wet-dry dual-use gas mixing and spraying device for organic flue gas and process thereof |
| CN106563330A (en) * | 2015-10-09 | 2017-04-19 | 冀文平 | Dry and wet dual-use flue gas purification technology of organic flue gas |
-
2008
- 2008-04-29 CN CNU2008201109088U patent/CN201214045Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101829490A (en) * | 2010-05-14 | 2010-09-15 | 上海龙净环保科技工程有限公司 | Oxygen supply pipe device for wet flue gas desulfurization oxidation |
| CN101829490B (en) * | 2010-05-14 | 2012-08-15 | 上海龙净环保科技工程有限公司 | Oxygen supply pipe device for wet flue gas desulfurization oxidation |
| CN102327736A (en) * | 2011-06-14 | 2012-01-25 | 于力 | Method and integrated equipment for collecting desulfuration product by ammonia wet desulfuration dry method |
| CN102949921A (en) * | 2012-11-19 | 2013-03-06 | 厦门城力机电设备有限公司 | High-pressure electrostatic dust collection electric field device of coal-fired unit for generating ozone and simultaneously desulfurizing and denitrating |
| WO2015054929A1 (en) * | 2013-10-15 | 2015-04-23 | 中国科学院过程工程研究所 | Combined desulfuration, denitration, and mercury removal apparatus and method using semidry process in circulating fluidized bed |
| US9656206B2 (en) | 2013-10-15 | 2017-05-23 | Institute Of Process Engineering, Chinese Academy Of Sciences | Combined desulfuration, denitration, and demercuration apparatus and method using semi-dry process in circulating fluidized bed |
| CN106563329A (en) * | 2015-10-09 | 2017-04-19 | 冀文平 | Dry and wet dual-use mixed gas apparatus for organic flue gas, and technology thereof |
| CN106563341A (en) * | 2015-10-09 | 2017-04-19 | 冀文平 | Wet-dry dual-use gas mixing and spraying device for organic flue gas and process thereof |
| CN106563330A (en) * | 2015-10-09 | 2017-04-19 | 冀文平 | Dry and wet dual-use flue gas purification technology of organic flue gas |
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| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Liu Haiqing Document name: Notification of Termination of Patent Right |
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| DD01 | Delivery of document by public notice |
Addressee: Liu Haiqing Document name: Notification to Pay the Fees |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090401 Termination date: 20100429 |