CN102210970B - Desulfurization recycle unit for flue gas sulfur dioxide - Google Patents
Desulfurization recycle unit for flue gas sulfur dioxide Download PDFInfo
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- CN102210970B CN102210970B CN2011101069087A CN201110106908A CN102210970B CN 102210970 B CN102210970 B CN 102210970B CN 2011101069087 A CN2011101069087 A CN 2011101069087A CN 201110106908 A CN201110106908 A CN 201110106908A CN 102210970 B CN102210970 B CN 102210970B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention discloses a desulfurization recycle unit for flue gas sulfur dioxide. The desulfurization recycle unit comprises a high-temperature flue gas waste heat exchanger, wherein the high-temperature flue gas waste heat exchanger is connected with a flue gas condensation dust remover by virtue of a pipeline; the flue gas condensation dust remover is connected with a metal associated tube temperature adjuster by virtue of a pipeline; the metal associated tube temperature adjuster is connected with a flue gas filter by virtue of pipeline; the outlet of the flue gas filter is connected with the inlet of a membrane stack exchange absorption device by virtue of a pipeline; the outlet of the membrane stack exchange absorption device is communicated with the atmosphere; the absorption liquid outlet of the membrane stack exchange absorption device is connected with a second centrifugal machine by virtue of a pipeline; one end of the second centrifugal machine is connected with a first centrifugal machine, and the other end of the second centrifugal machine is connected with a third centrifugal machine which is connected with an air flow drying machine; and sulfite products are discharged from the outlet of the air flow drying machine, so that the desulfurization recycle unit disclosed by the invention can be used for achieving a relatively good desulfurization effect, and the sulfite produced during the flue gas desulfurization procedure is recycled.
Description
Technical field
The present invention relates to flue gas desulphurization system, is a kind of desulfurization recycle unit for flue gas sulfur dioxide.
Background technology
Sulfur dioxide severe contamination atmosphere, after sulfur dioxide was inhaled into human body, the secreting function of respiratory tract ciliary movement and mucous membrane was restricted when concentration reaches 10-15PPm; When concentration reaches 20PPm, cause cough and stimulate eyes; When concentration reached 100PPm, obvious irritation appearred in bronchus and lung; When toxicity after floating dust sucks has increased 3-4 doubly; Therefore, reducing the discharge capacity of sulfur dioxide, is the main target that reduces atmosphere pollution, and the sulfur dioxide desulfurization in the flue gas also is the equipment that fume emission enterprise must configure.At present, the flue gas desulfur device that fume emission enterprise uses is generally tower structure, and wet sprinkling desulfurization, dry method or the semidry method device etc. of being combined with tower structure are arranged.The deficiency of these desulfurizers is comparatively obvious: cost is high, and a cover tower desulfurizer cost needs more than 5,000 ten thousand yuan, and operating cost needs hundreds of thousands first every day, and maintenance cost is high, therefore, every day can't be opened these devices by many enterprises, causes atmosphere pollution serious.In addition, although some single devices cost is low, desulfurized effect is poor, can't reach national requirements 200mg/m
3Standard, and the enriched products in can't recovered flue gas.
Summary of the invention
The objective of the invention is, a kind of desulfurization recycle unit for flue gas sulfur dioxide is provided, make it reach good desulfurized effect, and the sulphite of simultaneously recovered flue gas sweetening process generation.
The present invention for achieving the above object, be achieved through the following technical solutions: a kind of desulfurization recycle unit for flue gas sulfur dioxide, comprise the high-temperature flue gas residual-heat exchanger, the high-temperature flue gas residual-heat exchanger is connected with the flue gas condensing deduster by pipeline, the flue gas condensing deduster is connected with the metal sheet tubes thermoregulator by pipeline, the metal sheet tubes thermoregulator is connected with smoke filter by pipeline, the smoke filter outlet is connected with membrane stack exchange absorption plant entrance by pipeline, membrane stack exchange absorption plant exhanst gas outlet communicates with atmosphere, the absorption liquid outlet of membrane stack exchange absorption plant is connected with the second centrifuge by pipeline, the second centrifuge one end is connected with the first centrifuge, the other end is connected with the 3rd centrifuge, the 3rd centrifuge is connected with distinguished and admirable drying machine, and distinguished and admirable drying machine outlet is the sulphite product;
The structure of flue gas condensing deduster is: housing is cylindric, the housing bottom is circular-arc, housing bottom outer wall is installed bracing frame, housing inner chamber bottom is for reclaiming sap cavity, the bottom of reclaiming sap cavity arranges reclaims the liquid outlet, reclaiming the liquid outlet is connected with the first centrifuge by pipeline, the first metal partion (metp) is installed at housing inner chamber middle part, uniform micropore on the first metal partion (metp), above the first metal partion (metp) metallic filler layer is set, metallic filler layer is that metal ball consists of, and the diameter of metal ball is the 3-5 millimeter, the height H of metallic filler layer is 95-105 centimetre, the second metal partion (metp) is installed on housing top, uniform micropore on the second metal partion (metp), and case top is installed the spray support bar, the spray support bar top is passed housing and is connected with nozzle, and spray quinoline support bar bottom is passed the second metal partion (metp) bottom surface and is connected with the spray head support;
The structure of metal sheet tubes thermoregulator is: an end of shell arranges gas approach, the other end set temperature adjuster exhanst gas outlet of shell, gas approach and thermoregulator exhanst gas outlet are located in the same horizontal plane, and both horizontal center lines are identical, the metal sealing dividing plate is installed on the cavity top of shell, offer through hole on the metal sealing dividing plate, interference fit vacuum tube in the through hole, vacuum tube top is positioned at the heat absorption chamber, the vacuum tube bottom is positioned at the cavity of shell, the vacuum tube periphery that is positioned at cavity is installed metal sheet tubes, it is U-shaped that metal sheet tubes is, the sealing of the U-shaped upper end open of metal sheet tubes and metal sealing dividing plate is connected, filling heat-conducting medium in the cavity between metal sheet tubes and vacuum tube, and the D outer diameter 1 of metal sheet tubes is 1.5 times of D outer diameter 2 of vacuum tube;
Membrane stack exchange absorption plant is composed in series by the first membrane module unit and the second membrane module unit at least, each membrane module unit has 12 diaphragms to consist of, the first membrane module unit bottom arranges smoke inlet, the second membrane module unit upper end arranges exhanst gas outlet, the second membrane module unit top arranges the absorption liquid entrance, the first membrane module unit bottom arranges the absorption liquid outlet, and 4500-5700 root film silk is set in the diaphragm.
Described membrane stack exchange absorption plant has two groups of parallel connections to make by the structure that the first membrane module unit and the series connection of the second membrane module unit consist of.5000 film silks are set in the diaphragm.
Device of the present invention can make the SO2 emissions of discharging in the flue gas lower by about 95% than national standard, and the cost of whole device only is 400-700 about ten thousand, operating cost be about 210-260 unit/hour, simultaneously, the product such as the sulphite that reclaims can be more than 300 ten thousand yuan of enterprise's extra earnings every year, the whole device of the present invention all is to move under closed state, without any pollution, and, single unit system of the present invention also has the manufacturing of being easy to, install, long service life, the advantages such as maintenance cost is low, for enterprise provides a kind of sulfur dioxide desulfurization retracting device that can all open use every day, guaranteed the requirement of atmosphere cleanliness factor when really having accomplished fume emission.
Description of drawings
Fig. 1 is desulfurization recycle unit for flue gas sulfur dioxide structural representation of the present invention; Fig. 2 is the structural representation of flue gas condensing deduster 2 among Fig. 1; Fig. 3 is the structural representation of temperature adjusting device for metal sheet tubes 5 among Fig. 1; Fig. 4 is the structural representation of membrane stack exchange absorption plant 9 among Fig. 1; Fig. 5 be among Fig. 4 A to the structure for amplifying schematic diagram; Fig. 6 is the B-B section structure for amplifying schematic diagram of diaphragm 43 among Fig. 4.
The specific embodiment
The present invention will be further described for the contrast drawings and Examples.
The present invention has a high-temperature flue gas residual-heat exchanger 1 for the desulfurization retracting device that reaches goal of the invention and provide, high-temperature flue gas residual-heat exchanger 1 is connected with flue gas condensing deduster 2 entrances by pipe outlet, 2 outlets of flue gas condensing deduster are connected with metal sheet tubes thermoregulator 3 entrances by pipeline, 3 outlets of metal sheet tubes thermoregulator are connected with smoke filter 4 entrances by pipeline, smoke filter 4 outlets are connected with membrane stack exchange absorption plant 5 entrances by pipeline, membrane stack exchange absorption plant 5 exhanst gas outlets communicate with atmosphere, the absorption liquid outlet 47 of membrane stack exchange absorption plant 5 is connected with the second centrifuge 8 by pipeline, the second centrifuge 8 one ends are connected with the first centrifuge 9, the other end is connected with the 3rd centrifuge 7, the 3rd centrifuge 7 is connected with distinguished and admirable drying machine 6, and distinguished and admirable drying machine 6 outlets are the sulphite product;
The structure of flue gas condensing deduster 2 is: housing 14 is cylindric, housing 14 bottoms are circular-arc, housing 14 bottom outer walls are installed bracing frame 18, housing 14 inner chamber bottoms are for reclaiming sap cavity 19, the bottom of reclaiming sap cavity 19 arranges reclaims liquid outlet 15, reclaiming liquid outlet 15 is connected with the first centrifuge 9 by pipeline, the first metal partion (metp) 21 is installed at housing 14 inner chambers middle part, uniform micropore on the first metal partion (metp) 21, above the first metal partion (metp) 21 metallic filler layer 22 is set, metallic filler layer 22 consists of for metal ball, the diameter of metal ball is the 3-5 millimeter, the height H of metallic filler layer 22 is 95-105 centimetre, uniform micropore on the second metal partion (metp) 12, the second metal partion (metp)s 12 is installed on housing 14 tops, and spray support bar 11 is installed at housing 14 tops, spray support bar 11 tops are passed housing 14 and are connected with nozzle 10, and spray quinoline support bar 11 bottoms are passed the second metal partion (metp) 12 bottom surfaces and are connected with spray head support 13;
The structure of metal sheet tubes thermoregulator 3 is: an end of shell 35 arranges gas approach 34, the other end set temperature adjuster exhanst gas outlet 26 of shell 35, gas approach 34 is located in the same horizontal plane with thermoregulator exhanst gas outlet 26, and both horizontal center lines are identical, metal sealing dividing plate 32 is installed on cavity 33 tops of shell 35, offer through hole on the metal sealing dividing plate 32, interference fit vacuum tube 30 in the through hole, vacuum tube 30 tops are positioned at heat absorption chamber 29, vacuum tube 30 bottoms are positioned at the cavity 33 of shell 35, vacuum tube 30 peripheries that are positioned at cavity 33 are installed metal sheet tubes 36, metal sheet tubes 36 is U-shaped, the U-shaped upper end open of metal sheet tubes 36 is connected with 32 sealings of metal sealing dividing plate, fill heat-conducting medium 37 in the cavity that metal sheet tubes 36 and vacuum tube are 30, the D outer diameter 1 of metal sheet tubes 36 is 1.5 times of D outer diameter 2 of vacuum tube 30;
Membrane stack exchange absorption plant 5 is composed in series by the first membrane module unit 45 and the second membrane module unit 42 at least, each membrane module unit has 12 diaphragms 43 to consist of, the first membrane module unit 45 bottoms arrange smoke inlet 46, the second membrane module unit 42 upper ends arrange exhanst gas outlet 40, the second membrane module unit 42 tops arrange absorption liquid entrance 41, the first membrane module unit 45 bottoms arrange absorption liquid outlet 47, the diaphragm 43 interior 4500-5700 root film silks 48 that arrange.
Membrane stack described in apparatus of the present invention exchange absorption plant 5 has two groups of parallel connections to make by the structure that the first membrane module unit 45 and 42 series connection of the second membrane module unit consist of, and is higher or require SO2 emissions to be lower than 5 mg/m when sulfur dioxide in flue gas concentration
3The time, use four membrane module unit, that is: in parallel again after two groups of series connection, can improve desulfurized effect.
Diaphragm of the present invention 43 is interior to arrange 5000 film silks 48, and this is the preferred version of a kind of better effects and lower cost.
The course of work of device of the present invention is: temperature is that 190 ℃-230 ℃ flue gas is after 1 heat exchange of high-temperature flue gas residual-heat exchanger, temperature is down to about 130 ℃, waste heat is used for domestic water heating and boiler hot air combustion-supporting etc., flue gas about 130 ℃ adopts booster fan to send into flue gas condensing deduster 2 by pipeline, flue gas is discharged through top through metallic filler layer, also through gas-water separation.Contain soda in the aqueous solution of the spray head ejection in the flue gas condensing deduster 2, behind the spray head spray, discharged by the lower housing portion leakage fluid dram, enters the first centrifuge 9 by absorption portion sulfur dioxide by the top entrance for the soda aqueous solution.Flue gas and the soda aqueous solution opposite direction that flows, flue gas and soda aqueous solution contact area are mainly in packing layer, because the specific area of the height of metallic filler layer and larger metal ball has been selected suitable parameter, so, the exchange reaction of sulfur dioxide and the soda aqueous solution is abundant, simultaneously, the heated temperature of the aqueous solution is generally about 70 ℃, at this moment, the temperature of metal ball is generally also in this temperature range, the soda aqueous solution contacts with flue gas at metallic filler layer, and water temperature can not rise, and can only make steam turn to steam.When aqueous solution import department temperature during 20 ℃ of left and right sides, water vapour in the flue gas is condensed, the vaporization that discharges during condensation, flue-gas temperature is descended, finish condensation process, the temperature that this moment, flue gas was discharged by case top is about about 60 ℃, and the soda aqueous solution can be selected: concentration is the sodium hydrate aqueous solution of 20-30%.Because entering membrane stack exchange absorption plant 5 when 60 ℃ of left and right sides, flue-gas temperature easily make diaphragm impaired, significantly reduced its service life, thereby raising maintenance cost, and affect the desulfurized effect of sulfur dioxide, therefore, adopt metal sheet tubes thermoregulator 3 to make flue-gas temperature be down to 40-50 ℃, vacuum tube 30 in the metal sheet tubes thermoregulator 3 adopts copper, aluminium, steel or alloy are made, flue gas passes to vacuum tube 30 by metal sheet tubes and heat-conducting medium, meet heat absorption by vacuum tube 30, meet cold and characteristics that put, rapidly realize making the purpose of flue gas cool-down, and transmit temperature and be exceedingly fast, heat-transfer rate is near velocity of sound.Metal sheet tubes thermoregulator 3 can make and reduce to rapidly the smoke temperature into about the cigarette temperature 60 C is 40-50 ℃, and has safe and reliablely, can be installed in the advantage such as work in the various adverse circumstances.Through the flue gas of metal sheet tubes 3 cooling pass through again smoke filter 4 with the contaminant filter in the flue gas after, make flue gas enter membrane stack exchange absorption plant 5.Owing to having adopted the series connection membrane module unit in the membrane stack exchange absorption plant 5, and the film silk that has adopted the high density in the diaphragm to fill, so, for flue gas provides great gas-liquid contact area, the flue gas that contains sulfur dioxide enters film silk inside, because the volatilization diffusivity that sulfur dioxide is extremely strong and absorption liquid are to the extremely strong seizure of sulfur dioxide, sulfur dioxide can see through fast membranous wall and enter absorption liquid, absorption liquid then can't see through membranous wall more greatly because of molecular weight, finish the gas-liquid exchange on the membranous wall surface, the exchange absorptivity can reach 98.9%, and energy consumption is low, does not pollute.The sulfur dioxide in flue gas content of discharging through membrane stack exchange absorption plant 5 is 5-10 mg/m
3The absorption liquid that membrane stack exchange absorption plant 5 is discharged enters the second centrifuge 8 and carries out liquid-solid separation, simultaneously, the liquid of discharging through flue gas condensing deduster 2 enters and also enters the second centrifuge 8 after the first centrifuge 9 carries out liquid-solid separation, merge with absorption liquid that membrane stack exchange absorption plant 5 is discharged and to carry out entering again the 3rd centrifuge 7 after liquid-solid the separation and carry out liquid-solid the separation, the solid after separating is carried out drying through distinguished and admirable drying machine 6 again obtain the sulphite product.
High-temperature flue gas residual-heat exchanger 1 of the present invention, smoke filter 4, the first centrifuge 9, the second centrifuge 8, the 3rd centrifuge 7 and distinguished and admirable drying machine 6 are known device.
16 is flue gas condensing deduster smoke inlets among the figure, the 17th, sewage draining exit, the 20th, reclaim the sap cavity entrance, the 23rd, the filler entrance, the 24th, flue gas condensing deduster exhanst gas outlet, 27 is first blow-off pipes, the 28th, and steam outlet pipe, the 31st, steam inlet pipe, 38 is second blow-off pipes, the 39th, temperature sensor, the 44th, pipeline, the 49th, absorption liquid.
Claims (3)
1. desulfurization recycle unit for flue gas sulfur dioxide, comprise high-temperature flue gas residual-heat exchanger (1), it is characterized in that: high-temperature flue gas residual-heat exchanger (1) is connected with flue gas condensing deduster (2) by pipeline, flue gas condensing deduster (2) is connected with metal sheet tubes thermoregulator (3) by pipeline, metal sheet tubes thermoregulator (3) is connected with smoke filter (4) by pipeline, smoke filter (4) outlet is connected with membrane stack exchange absorption plant (5) entrance by pipeline, membrane stack exchange absorption plant (5) exhanst gas outlet communicates with atmosphere, the absorption liquid outlet of membrane stack exchange absorption plant (5) is connected with the second centrifuge (8) by pipeline, the second centrifuge (8) one ends are connected with the first centrifuge (9), the other end is connected with the 3rd centrifuge (7), the 3rd centrifuge (7) is connected with distinguished and admirable drying machine (6), and distinguished and admirable drying machine (6) outlet is the sulphite product;
The structure of flue gas condensing deduster (2) is: housing (14) is cylindric, housing (14) bottom is circular-arc, housing (14) bottom outer wall is installed bracing frame (18), housing (14) inner chamber bottom is for reclaiming sap cavity (19), the bottom of reclaiming sap cavity (19) arranges reclaims liquid outlet (15), reclaiming liquid outlet (15) is connected with the first centrifuge (9) by pipeline, the first metal partion (metp) (21) is installed at housing (14) inner chamber middle part, the upper uniform micropore of the first metal partion (metp) (21), metallic filler layer (22) is set above the first metal partion (metp) (21), metallic filler layer (22) consists of for metal ball, the diameter of metal ball is the 3-5 millimeter, the height H of metallic filler layer (22) is 95-105 centimetre, the second metal partion (metp) (12) is installed on housing (14) top, the upper uniform micropore of the second metal partion (metp) (12), spray support bar (11) is installed at housing (14) top, spray support bar (11) top is passed housing (14) and is connected with nozzle (10), and spray quinoline support bar (11) bottom is passed the second metal partion (metp) (12) bottom surface and is connected with spray head support (13);
The structure of metal sheet tubes thermoregulator (3) is: an end of shell (35) arranges gas approach (34), the other end set temperature adjuster exhanst gas outlet (26) of shell (35), gas approach (34) is located in the same horizontal plane with thermoregulator exhanst gas outlet (26), and both horizontal center lines are identical, metal sealing dividing plate (32) is installed on cavity (33) top of shell (35), the metal sealing dividing plate is offered through hole on (32), interference fit vacuum tube (30) in the through hole, vacuum tube (30) top is positioned at heat absorption chamber (29), vacuum tube (30) bottom is positioned at the cavity (33) of shell (35), vacuum tube (30) periphery that is positioned at cavity (33) is installed metal sheet tubes (36), metal sheet tubes (36) is U-shaped, the U-shaped upper end open of metal sheet tubes (36) is connected with metal sealing dividing plate (32) sealing, fill heat-conducting medium (37) in the cavity between metal sheet tubes (36) and vacuum tube (30), the D outer diameter 1 of metal sheet tubes (36) is 1.5 times of D outer diameter 2 of vacuum tube (30);
Membrane stack exchange absorption plant (5) is composed in series by the first membrane module unit (45) and the second membrane module unit (42) at least, each membrane module unit has 12 diaphragms (43) to consist of, the first membrane module unit (45) bottom arranges smoke inlet (46), the second membrane module unit (42) upper end arranges exhanst gas outlet (40), the second membrane module unit (42) top arranges absorption liquid entrance (41), the first membrane module unit (45) bottom arranges absorption liquid outlet (47), and 4500-5700 root film silk (48) is set in the diaphragm (43).
2. a kind of desulfurization recycle unit for flue gas sulfur dioxide according to claim 1 is characterized in that: described membrane stack exchange absorption plant (5) has two groups of parallel connections to make by the structure of the first membrane module unit (45) and the second membrane module unit (42) series connection formation.
3. a kind of desulfurization recycle unit for flue gas sulfur dioxide according to claim 1 is characterized in that: 5000 film silks (48) are set in the diaphragm (43).
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| CN2011101069087A CN102210970B (en) | 2011-04-27 | 2011-04-27 | Desulfurization recycle unit for flue gas sulfur dioxide |
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| CN2011101069087A CN102210970B (en) | 2011-04-27 | 2011-04-27 | Desulfurization recycle unit for flue gas sulfur dioxide |
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| CN102210970B true CN102210970B (en) | 2013-02-27 |
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Families Citing this family (3)
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| CN104353338A (en) * | 2014-10-28 | 2015-02-18 | 南京大学（苏州）高新技术研究院 | Cross flow-type desulfurization device |
| CN105771532A (en) * | 2016-04-26 | 2016-07-20 | 中冶南方工程技术有限公司 | Flue gas desulfurizer through condensation |
| CN112473169A (en) * | 2020-12-07 | 2021-03-12 | 南通海嘉智能科技有限公司 | Supercritical carbon dioxide extraction reaction system |
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| CN1608717A (en) * | 2004-09-14 | 2005-04-27 | 天津大学 | Method and apparatus for desulfurizing waste gas containing SO2 |
| US20050223895A1 (en) * | 2004-04-08 | 2005-10-13 | Wong Kenneth K | Utilization of compressor surge control air in an aircraft on-board inert gas generating system |
| CN101480559A (en) * | 2008-01-09 | 2009-07-15 | 中国石油化工股份有限公司 | Method for recycling sulfureous in flue gas using film |
| CN201643945U (en) * | 2010-02-09 | 2010-11-24 | 江苏工业学院 | Flue gas desulfurization device |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050223895A1 (en) * | 2004-04-08 | 2005-10-13 | Wong Kenneth K | Utilization of compressor surge control air in an aircraft on-board inert gas generating system |
| CN1608717A (en) * | 2004-09-14 | 2005-04-27 | 天津大学 | Method and apparatus for desulfurizing waste gas containing SO2 |
| CN101480559A (en) * | 2008-01-09 | 2009-07-15 | 中国石油化工股份有限公司 | Method for recycling sulfureous in flue gas using film |
| CN201643945U (en) * | 2010-02-09 | 2010-11-24 | 江苏工业学院 | Flue gas desulfurization device |
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Effective date of registration: 20191011 Address after: 250022 No. 8, West Street, Ying Ying, Ji'nan, Shandong Patentee after: Ji'nan Tai Reed Environmental Technology Co., Ltd. Address before: Ying Shi Xi Jie, Huaiyin District of Ji'nan city of Shandong Province, No. 8 250022 Patentee before: Li Wei Dong |