CN1424132A - Condensing smoke desulfurizing method and device thereof - Google Patents
Condensing smoke desulfurizing method and device thereof Download PDFInfo
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- CN1424132A CN1424132A CN02151234A CN02151234A CN1424132A CN 1424132 A CN1424132 A CN 1424132A CN 02151234 A CN02151234 A CN 02151234A CN 02151234 A CN02151234 A CN 02151234A CN 1424132 A CN1424132 A CN 1424132A
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Abstract
A condensing-type process and apparatus for desulfurizing fume features that a number of condensing rings inclined horizontally are arranged on the chimney. Said condensing ring is composed of the part inside the chimney, which has fume inlet holes, and another part outside the chimney, which has the condensed water outlet and exhaust holes, and has a central flow channel. The SO2 in fume is easily dissolved in said condensed water and discharged with the condensed water.
Description
Technical field
The invention belongs to chemical industry, the energy, environmental technology field, be specifically related to a kind of method and device thereof of condensing flue gas desulfurization.
Background technology
The burning of fossil fuel such as coal and oil, metal smelt, Chemical Manufacture etc. all can produce the flue gas that contains sulfur dioxide (SO2).Sulfur dioxide enters atmosphere with flue gas can form acid rain, causes environmental pollution, destroys the ecosystem and harm humans health and buildings such as agricultural, forestry and organism in water.In recent years, though various countries have taked the measure of all minimizing SO2 emissions, the sulfur dioxide that contains of burning unit mass fossil fuel discharging is reduced to some extent.But along with industrial expansion and Increase of population, the consumption figure sustainable growth of fossil fuel, the annual discharge capacity of whole world sulfur dioxide is by about 2.34 hundred million tons of about 3.3 hundred million tons of being increased to 2000 of the eighties in 19th century.China's sulfur dioxide (SO2) emissions are 1,495 ten thousand tons in nineteen ninety, then increase sharply by 1994 to 1,840 ten thousand tons, the sulfur dioxide that drained in 1998 in the atmosphere has reached 2,091 ten thousand tons of (Zhu Shiyong chief editor, environment and industrial gas purifying technology, Chemical Industry Press, Beijing, May calendar year 2001).
In industrial production, because smoke discharge amount is big, its contained sulfur dioxide concentration is low, is the problem of making us perplexing in the desulfuration field always.In causing the gaseous contaminant of atmosphere pollution, sulfur dioxide is topmost pollutant, its quantity maximum, and influence surface is the widest, and difficulty of governance is also maximum.The acid rain amount that China forms because of discharging sulfur dioxide has occupied first of the three big acid rain districts, the world, and the gesture of expanded range arranged, acid rain district area has accounted for 29% of area, direct economic loss has surpassed the (Miu Tiancheng that exceeds 100 billion, China administers the course and the suggestion of sulfur dioxide pollution, sulfuric acid industry, 2000, (1): 1).The atmosphere polluting problem that sulfur dioxide causes obtains the great attention of countries in the world government.Scientist both domestic and external and engineers and technicians have also carried out long-term a large amount of research to this, proposed the method for many flue gas desulfurizations.These methods are broadly divided into dry method and wet method two classes.Wherein dry method adopts the SO in solid phase absorbent, adsorbent or the catalyst removal flue gas
2The advantage of this method is no spent acid, discharge of wastewater, has reduced secondary pollution; Shortcoming is that desulfuration efficiency is low and unstable, and equipment is huge, and operation requires high.Wet method adopts alkaline solution to remove SO as absorbent usually
2The advantage of this method is that desulfuration efficiency is high and stable, and equipment is simple, processing ease; Shortcoming is to have secondary pollutions such as spent acid, waste water to handle again, and investment and operating cost are all higher.More than the two classes method of putting all be difficult to promote in many developing countries, its reason is that operation and installation cost are extremely expensive.With power plant's wet desulphurization, the installation fee that separation of flow device is installed is about 1/4 of a whole electric investment cost, and 300MW unit one cover separation of flow device is needed 2.5～3.0 hundred million yuans approximately.Power consumption 15～21MW per hour during operation, by per hour 0.3 yuan of calculating of kilowatt electricity, during this covering device operation per hour only the electricity charge just need 450～6,300,000 yuan, just needed 1.08～1.5 hundred million RMB in 1 day.So high expense is that this device can not be promoted the use of.
Summary of the invention
The objective of the invention is to propose that a kind of equipment is simple, operation is easy for installation, desulfuration efficiency is high, operation and extremely low fume desulphurization method and the device of installation cost.
The fume desulphurization method that the present invention proposes is on the smoke evacuation chimney several condensation rings to be installed, and its quantity can determine that the plane of this condensation ring becomes 15 °～35 ° the oblique angle that dips down with horizontal plane, as shown in Figure 1 according to the actual conditions such as size of exhaust smoke level; The condensation loop section is (promptly with the crossing part of chimney) in chimney, and its downside has the flue gas air admission hole, and flow of flue gas direction is aimed in this hole; The condensation loop section is outside chimney, and its downside has the condensate stream outlet, and upside has several steam vents; Condensation ring inside is provided with cannelure, and air admission hole, steam vent, condensate stream outlet are connected; Flue gas enters the condensation ring from air admission hole, through heat exchange, makes its temperature progressively reduce to 35-60 ℃.
Among the present invention, the part of condensation ring in chimney can adopt not good heat conducting material, as cement, pottery etc.Part outside chimney can adopt the acidproof metal material of heat conduction, as stainless steel etc.In order to strengthen heat exchange effect, the metal pipe-wall of the outer part of chimney can approach, and is generally 2-8mm; Its outer surface can also be provided with radiating fin, with further raising heat exchange effect.
Principle of the present invention is as follows:
Owing to contain moisture content in the fuel, all contain a certain amount of water vapour in the flue gas that in boiler, generates because of combustion fuel.Vapour content is generally about 15%.Water recovery becomes water volume content to be about 0.015%.SO in the flue gas
2Volume content be about about 0.35%.And SO
2Very easily be dissolved in water, a water can dissolve 40 parts of SO
2, 0.015% water can dissolve about 0.6%SO
2Therefore, on the theory, can be by moisture content own in the flue gas fully with SO
2Dissolving.As long as the water vapour in the flue gas can condense into water, can realize complete desulfurization like this.The temperature of water recovery Cheng Shui is about 35～60 ℃ in the flue gas.The inventive method is to make the temperature of flue gas reduce to the scope of this temperature, thereby realizes removing SO
2Purpose.Detailed process is as follows:
When flue gas arrives the condensation ring through chimney, by the air inlet on the condensation ring enter condensation bad in, under the atmosphere convection heat transfer boundary condition, flue gas cools off rapidly, the water recovery in the flue gas become water and in condensation process with the SO in the flue gas
2Dissolving.Condensation water is by groove in the condensation ring, and the condensate outlet below the chimney exterior portion flows out.The condensation ring tilts to place, and is convenient to condensate liquid and flows out.After being collected, the condensate liquid that flows out can be used to make sulfuric acid.Partly top has aperture to the condensation ring in chimney outside, the later flue gas that is cooled (SO at this moment
2Dissolved) discharge by these apertures.As long as can fully be cooled off, can remove the SO in these discharge flue gases fully
2As long as on chimney, arrange abundant such condensation ring, can be with the flue gas cooling of all discharges, can reach and remove SO in the flue gas
2Purpose.
The inventive method winter, spring and autumn desulfuration efficiency can guarantee.In summer, because environment temperature can be affected than high desulfurization efficiency.The device that at this moment can add a cover shower water in the part outside the chimney on the condensation ring, an amount of water of spray in the condensation ring, the water that spirt goes can dissolve SO on the one hand
2, can also reduce the temperature of flue gas in the condensation ring on the other hand, these are all favourable to desulfurization.The water that spirt goes can be built a collecting-tank, assembles long-term sleet etc.Use as shower water after also condensate liquid can being handled separate sulfur.Treated, these water can also directly be quoted.But the area of Jie Binging need consider to settle heater can't flow out to prevent that condensate liquid from freezing in the winter time.Electric heater unit specifically can be installed or guide hot flue gas to be its heating.
For the water-deficient area, can also on the condensation ring, fan be installed, with enhanced heat exchange, cooled flue gas.
The also available condensation of condensation ring rod replaces, and its structure and condensation lopps seemingly also have exhanst gas outlet after cigarette gas entering opening and the condensation, and condensation liquid bath and strong, heat exchange fin etc. also need be provided with if necessary and spray or heating arrangement.
The present invention adopts the condensation technology desulfurization, and its characteristics are as follows:
1. first cost is low, only is equivalent to 1%～2% of at present same capacity desulphurization plant investment substantially.
2. operating cost is low, consumes energy hardly during operation.Under some operating mode, only consume less energy.
3. byproduct such as recyclable sulfuric acid as industrial chemicals, produces economic benefit.
4. do not have any secondary pollution, do not have discarded object, do not need additive yet.
5. the desulfuration efficiency height can reach 100% in theory.
In sum, the present invention is not consumed energy or few power consumption, mainly utilizes the temperature of natural environment to lower the temperature and removes sulfur in smoke, and reduce and pollute, simultaneously, for chemical industry is supplied raw materials.
Description of drawings
Fig. 1 is a condensing sulfur method schematic diagram of the present invention.
Fig. 2 is condensation ring structure plane diagram among the present invention.
Fig. 3 is condensation ring structure cross-section illustration among the present invention.
Number in the figure: 1 is the smoke evacuation chimney, and 2 are the condensation ring, and 3 is air admission hole, and 4 are the condensate stream outlet, and 5 is steam vent, and 6 is the condensate flow groove.
The specific embodiment
As shown in drawings.For about 1.5 meters an of diameter, the metal smelt smoke evacuation chimney that height is 20 meters designs totally 10 on corresponding condensation ring 2,1.8 meters of condensation ring 2 diameters, and the endless tube diameter is 25cm, the width 6cm of central liquid chute 6, degree of depth 4cm.The part that ring is positioned at chimney adopts ceramic material, and wherein the diameter of the air admission hole 3 of subordinate's side is 10cm.Ring is positioned at the outer part of chimney and adopts stainless steel material, and wherein liquid flow hole 4 diameters of subordinate's side are 8cm, and the steam vent of its upside is 4, and diameter is 6cm.These condensation rings evenly are installed on the chimney, and about 1/3 part is positioned at chimney, and bad skew angle with horizontal plane is 15-20 ℃.In addition, fin is arranged, to strengthen heat radiation in the design of stainless steel tube wall outer surface.The condensation ring of design and installation can make flue-gas temperature be reduced to 40-50 ℃ effectively thus, and desulfuration efficiency can reach more than 90%.
Claims (8)
1, a kind of condensing fume desulphurization method, it is characterized in that on the smoke evacuation chimney, several condensation rings being installed, its quantity can be determined according to chimney size actual conditions, the plane that this condensation is bad becomes 15 °-35 ° the oblique angle that dips down with horizontal plane, the condensation loop section is in chimney, its downside has the flue gas air admission hole, and the flow of flue gas direction is aimed in this hole; The condensation loop section is outside chimney, and its downside has the condensate stream outlet, and upside has several steam vents; Condensation ring inside is provided with cannelure, and air admission hole, steam vent, condensate stream outlet are connected.
2, condensing fume desulphurization method according to claim 1 is characterized in that the part of condensation ring in chimney adopts not good heat conducting material, and the part outside chimney adopts the acidproof metal material of heat conduction.
3, condensing fume desulphurization method according to claim 2 is characterized in that the metal pipe-wall outer surface of condensation ring outside chimney is provided with radiating fin.
4, according to claim 2 or 3 described condensing fume desulphurization methods, it is characterized in that the condensation ring is provided with the device of shower water.
5, according to claim 2 or 3 described condensing fume desulphurization methods, it is characterized in that on the condensation ring fan being installed.
6, a kind of device that is used for as the said condensing fume desulphurization method of claim 1 is characterized in that being annular, and the part downside that intersects with the smoke evacuation chimney has the flue gas air admission hole; Part downside outside chimney has the condensate stream outlet, and upside has the plurality of rows pore; Be provided with cannelure in the ring, this groove connects air admission hole, steam vent, liquid flowing outlet.
7, device according to claim 6 is characterized in that the part that intersects with chimney adopts not good heat conducting material, and the part outside chimney adopts the acidproof metal material of heat conduction.
8, device according to claim 6 is characterized in that the metal pipe-wall outer surface outside chimney is provided with radiating fin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021512345A CN1311891C (en) | 2002-12-12 | 2002-12-12 | Condensing smoke desulfurizing method and device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021512345A CN1311891C (en) | 2002-12-12 | 2002-12-12 | Condensing smoke desulfurizing method and device thereof |
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| Publication Number | Publication Date |
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| CN1424132A true CN1424132A (en) | 2003-06-18 |
| CN1311891C CN1311891C (en) | 2007-04-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021512345A Expired - Fee Related CN1311891C (en) | 2002-12-12 | 2002-12-12 | Condensing smoke desulfurizing method and device thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102210005A (en) * | 2008-11-10 | 2011-10-05 | 应用材料公司 | Exhaust condensate removal apparatus for abatement system |
| CN110132699A (en) * | 2019-05-17 | 2019-08-16 | 南通华兴石油仪器有限公司 | A kind of rock core oil washing instrument |
| CN112945887B (en) * | 2021-03-11 | 2023-12-19 | 西安交通大学 | Flue gas in-situ monitoring system and method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3346865C1 (en) * | 1983-12-23 | 1985-04-18 | Air Fröhlich AG für Energierückgewinnung, Arbon | Method and device for separating pollutants from a flue gas |
| DE3630940A1 (en) * | 1986-09-11 | 1988-03-24 | Insumma Energie Systemplanung | METHOD AND DEVICE FOR DESULFURING SMOKE GAS |
| DE4233685C2 (en) * | 1992-10-02 | 1998-02-12 | Ver Energiewerke Ag | Process and arrangement for the use of energy from flue gases in coal-fired power plants |
| US5291841A (en) * | 1993-03-08 | 1994-03-08 | Dykema Owen W | Coal combustion process for SOx and NOx control |
| CN2435648Y (en) * | 2000-07-12 | 2001-06-20 | 陈南洋 | Cyclone counterspray impact washer |
-
2002
- 2002-12-12 CN CNB021512345A patent/CN1311891C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102210005A (en) * | 2008-11-10 | 2011-10-05 | 应用材料公司 | Exhaust condensate removal apparatus for abatement system |
| CN110132699A (en) * | 2019-05-17 | 2019-08-16 | 南通华兴石油仪器有限公司 | A kind of rock core oil washing instrument |
| CN112945887B (en) * | 2021-03-11 | 2023-12-19 | 西安交通大学 | Flue gas in-situ monitoring system and method |
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| Publication number | Publication date |
|---|---|
| CN1311891C (en) | 2007-04-25 |
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Owner name: CHINA DATANG GROUP SCIENCE AND TECHNOLOGY RESEARCH Effective date: 20131121 |
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Effective date of registration: 20131121 Address after: 200090 Pingliang Road, Shanghai, No. 2103, No. Patentee after: Shanghai University of Electric Power Patentee after: China Datang Group Science & Technology Research Institute Co., Ltd. Address before: 200090 Pingliang Road, Shanghai, No. 2103, No. Patentee before: Shanghai University of Electric Power |
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