CN105920993B - A kind of white clay method fume desulfurizing tower - Google Patents
A kind of white clay method fume desulfurizing tower Download PDFInfo
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- CN105920993B CN105920993B CN201610515148.8A CN201610515148A CN105920993B CN 105920993 B CN105920993 B CN 105920993B CN 201610515148 A CN201610515148 A CN 201610515148A CN 105920993 B CN105920993 B CN 105920993B
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- smoke
- intake pipe
- pipe road
- rooms
- white clay
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/502—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific solution or suspension
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/40—Alkaline earth metal or magnesium compounds
- B01D2251/404—Alkaline earth metal or magnesium compounds of calcium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
The present invention relates to flue gas desulfurization device field, specifically a kind of white clay method fume desulfurizing tower, including tower body, tower body are provided with smoke inlet and exhaust opening, spray equipment are provided with tower body；Smoke inlet is connected with smoke-intake pipe road, the rectangular cross-section in smoke-intake pipe road, and the first casing and the second casing are respectively equipped with outside the two opposite side walls in smoke-intake pipe road, and the inside in smoke-intake pipe road is provided with heat exchanger tube；First box house is divided into A rooms and B rooms by dividing plate, and the first casing is provided with medium inlet and media outlet, and A rooms connect with medium inlet, and B rooms connect with media outlet；Second box house is provided with C rooms, and A rooms pass sequentially through heat exchanger tube and connected with C rooms, B rooms；Smoke-intake pipe road is obliquely installed, and one end that smoke-intake pipe road is connected with smoke inlet is less than the other end in smoke-intake pipe road.It is energy-conserving and environment-protective of the present invention, stable.
Description
Technical field
The present invention relates to flue gas desulfurization device field, specifically a kind of white clay method fume desulfurizing tower.
Background technology
At present, most of power plant of China are still generated electricity using coal as main fuel, and coal-burning boiler is atmosphere pollution SO2
Primary discharge source, therefore, increase thermal power plant SO2 control dynamics it is particularly urgent and necessary.Flue gas desulfurization (FGD) is current
Coal-burning boiler SO2 is controlled to discharge one of most effective approach.Industrial flue gas desulfurization technique can be divided into dry method, wet method and half
Dry method three major types.Wherein, Desulfurization of Wet Limestone-gypsum technique account for the whole world building and built desulfurizer using amount
90%, occupied an leading position in existing flue gas desulfurization technique.
Limestone scrubbing FGD, it is using lime stone slurry as desulfurizing agent, in desulfurizing tower carrying out spray to flue gas washes
Wash, CaSO3 is generated with the SO2 reactions in flue gas, while oxygen is blasted to the slurries of desulfurizing tower, CaSO3 is oxidized to CaSO4 and sink
Form sediment, i.e. gypsum, coal burning flue gas desulfurization rate can be made up to more than 90% using the method.In whole sweetening process, lime stone takes
With accounting for the 17% of whole sulfur removal technology totle drilling cost.But lime stone is a kind of limited natural crystal resource of reserves, lime is exploited
Stone can not only destroy ecology, and lime stone from exploit, transport to be processed into the cost of material that meets sulfur removal technology requirement compared with
It is high.
White clay, it is that paper industry carries out caused Main By product in alkali recovery process, its primary chemical to black liquor of pulp making
Composition is calcium carbonate, in addition the impurity also containing the type such as some calcium oxide and silicon, metal salt.Alkali recovery process is white at present
Mud actual production is about 2 ~ 2.2 tons of white clays/ton alkali, and for this, China paper mill will produce the white clay more than 3,000,000 tons every year, be
One of discarded object of power boiler discharge of papermaking industry.The mode of conventional harmless treatment paper white sludge mainly includes：It is sintered into stone
Ash is used as papermaking filler and for producing the building such as cement, coating in the recycling of alkali collection workshop section, Hydrolysis kinetics calcium carbonate
Material；In addition, paper white sludge also has a kind of more easy, practical processing mode, it is exactly the cigarette that white clay is used as to coal-burning boiler
Gas desulfurizer.According to detection, CaCO3 contents are about 85% in white clay, wherein, particle diameter accounts for more than 90% below 45 μm, and desulfurization is lived
Property is preferable, simultaneously promotion composition Na2O, MgO containing desulfurization etc., fully achieves more than 90% flue gas desulphuization rate, and
White clay is converted into gypsum in flue gas desulfurization course, has certain economic use value, therefore can solve paper mill simultaneously
Two big discarded object of solid and gas process problem, reach the treatment of wastes with processes of wastes against one another, the purpose of cost efficiency.
The flow of white clay method sulfur removal technology is that desulfurizing agent and water are configured to the suspension of concentration 20 ~ 25% under normal temperature bar
Sprayed from desulfurizing tower middle and upper part into tower, desulfurizing agent is mixed with up flue gas adverse current and reaction desulfuration.Because smoke-intake pipe road is cut
Face is larger, is easily deformed by high-temperature flue gas effect, influences service life of equipment, and therefore, existing inside is provided with more and strengthens branch
Dagger is to prevent smoke-intake pipe road deformed damaged.Temperature is higher after strengthening the heat of support column absorption high-temperature flue gas, when desulfurizing agent quilt
Be sprayed in smoke-intake pipe road or along inner wall of tower flow in smoke-intake pipe road when, can quickly dry out and be attached to reinforcement support column
On, this can not only influence fully contacting for desulfurizing agent and flue gas, reduce desulfuration efficiency, be generated after also resulting in desulfurizing agent and reacting
Gypsum quickly solidify together, block smoke-intake pipe road, influence equipment normal operation.
The content of the invention
The invention aims to solve above-mentioned the deficiencies in the prior art, there is provided a kind of skill of white clay method fume desulfurizing tower
Art scheme, it can prevent smoke-intake pipe road from blocking, so as to ensure the normal operation of desulfuration efficiency and equipment, moreover it is possible to more than recovered flue gas
Heat, improve energy utilization rate.
The technical problems to be solved by the invention are realized using following technical scheme：A kind of white clay method fume desulfurizing tower,
Including tower body, the tower body is provided with smoke inlet and exhaust opening, and spray equipment is provided with tower body；The smoke inlet and smoke-intake pipe road
Connect, the rectangular cross-section in the smoke-intake pipe road, the first casing and second are respectively equipped with outside the two opposite side walls in smoke-intake pipe road
Casing, the inside in smoke-intake pipe road are provided with heat exchanger tube；First box house is divided into A rooms and B rooms by dividing plate, is set on the first casing
There are medium inlet and media outlet, A rooms connect with medium inlet, and B rooms connect with media outlet；Second box house is provided with
C rooms, A rooms pass sequentially through heat exchanger tube and connected with C rooms, B rooms；The smoke-intake pipe road is obliquely installed, and smoke-intake pipe road is connected with smoke inlet
One end be less than smoke-intake pipe road the other end.
Technical scheme also has：The gradient of the smoke-intake pipe road with respect to the horizontal plane is 10 ° ~ 35 °.
Technical scheme also has：The tower body inwall is provided with gear cap, and the gear cap is located at the upper edge of smoke inlet
Place.Using the technical program, desulfurizing agent can be prevented to enter smoke-intake pipe road to a certain degree.
Technical scheme also has：The heat exchanger tube includes outer tube and inner tube, and the outer coaxial tube is sheathed on inner tube
There are space, one end closing of inner tube, the anchor ring closing between the other end and outer tube of inner tube, the periphery of inner tube in outside and interval
It is provided with spurt hole.Using the technical program, for gas as heat transferring medium, gas enters after inner tube by spurt hole height
Speed is sprayed onto outer tube wall, under the percussion of air-flow, makes the laminar boundary layer turbulent flowization between high-temperature flue gas and outer pipe surface,
Convection heat transfer' heat-transfer by convection is enhanced, improves heat exchange efficiency.
Technical scheme also has：Upper end of the arrangement density of the spurt hole along inner tube is gradual to the lower end of inner tube
Increase.Using the technical program, the gas injection flow in downstream can be increased, so as to strengthen the heat exchange in heat exchanger tube downstream.
Technical scheme also has：The both ends of the heat exchanger tube are provided with flange connector, the flange connector respectively with
The two opposite side walls in smoke-intake pipe road are welded and fixed.
Technical scheme also has：The bottom of the tower body is connected with oxidation fan, and oxidation fan is used for tower body
Bottom blasts air, CaSO3 is oxidized to CaSO4.
Technical scheme also has：The bottom of the tower body is provided with multiple screw propellers.Using this technology side
Case, screw propeller promote the suspension flowing of tower body bottom, on the one hand CaSO3 is fully contacted with oxygen, on the other hand carry
The mobility of high suspension, it is easy to discharge suspension.
The operation principle of the present invention：Flue gas enters tower body by smoke-intake pipe road, and at the same time, medium passes sequentially through A rooms, changed
Heat pipe, C rooms and B rooms, heat convection is carried out with flue gas.Flue gas after heat exchange and the reactive desulfurizing agent under spray equipment sprinkling, by
Exhaust opening is discharged.Desulfurizing agent generates gypsum with falling into tower body bottom after smoke reaction, with oxygen reaction.
Relative to prior art, beneficial effects of the present invention are：（1）Heat exchanger tube plays a part of supporting smoke-intake pipe road, energy
Enough prevent smoke-intake pipe road deformed damaged；（2）It will not quickly be dried out into the desulfurizing agent in smoke-intake pipe road and be attached to heat exchange
Guan Shang, so as to ensure fully contacting for desulfurizing agent and flue gas, improve desulfuration efficiency；（3）Into the desulfurizing agent in smoke-intake pipe road and
Gypsum quickly will not solidify in dehydration, have good mobility, can be flowed down along smoke-intake pipe road, so as to prevent smoke-intake pipe road from blocking up
Plug, ensure equipment normal operation；（4）Waste heat in flue gas can be recycled, environmental protection and energy saving, and because heat exchange is gone
Cheng great, heat convection make heat exchange efficiency higher.
Brief description of the drawings
Fig. 1 is the structural representation of white clay method fume desulfurizing tower.
Fig. 2 is the partial enlarged drawing in Figure 1A portions.
Fig. 3 be along Figure 1B to view.
Fig. 4 is the structural representation of heat exchanger tube.
In figure：1st, tower body, 2, smoke inlet, 3, exhaust opening, 4, spray equipment, 5, smoke-intake pipe road, the 6, first casing, 7, second
Casing, 8, heat exchanger tube, 9, dividing plate, 10, A rooms, 11, B rooms, 12, medium inlet, 13, media outlet, 14, C rooms, 15, gear cap, 16,
Outer tube, 17, inner tube, 18, spurt hole, 19, flange connector, 20, oxidation fan, 21, screw propeller.
Embodiment
For the technical characterstic for illustrating this programme can be understood, the specific embodiment of the invention is made below according to accompanying drawing further
Explanation.
As shown in Fig. 1 ~ Fig. 4, a kind of white clay method fume desulfurizing tower, including tower body 1, the cross section of tower body 1 is rectangle, tower body
1 is provided with smoke inlet 2 and exhaust opening 3, is provided with spray equipment 4 in tower body, the inwall of tower body 1 is provided with gear cap 15, and gear cap 15 is located at
At the upper edge of smoke inlet 2.
The bottom of tower body 1 is connected with oxidation fan 20.In the bottom of tower body 1, one is respectively provided with the left of each side wall of tower body
Individual screw propeller 21, as seen in Figure 3, four screw propellers 21 can make the suspension shape inside tower body 1
Circularize flowing.
Smoke inlet 2 is connected with smoke-intake pipe road 5, the rectangular cross-section in smoke-intake pipe road 5, outside the two opposite side walls in smoke-intake pipe road 5
Portion is respectively equipped with the first casing 6 and the second casing 7, and the inside in smoke-intake pipe road 5 is provided with heat exchanger tube 8.By dividing plate inside first casing 6
9 points are A rooms 10 and B rooms 11, and the first casing 6 is provided with medium inlet 12 and media outlet 13, and A rooms 10 connect with medium inlet 12
Logical, B rooms 11 connect with media outlet 13.The inside of second casing 7 is provided with C rooms 14, and A rooms 10 and C rooms 14, B rooms 11 pass sequentially through and changed
Heat pipe 8 connects, and the both ends of heat exchanger tube 8 are provided with flange connector 19, and flange connector 19 welds with the two opposite side walls in smoke-intake pipe road 5 respectively
Connect fixation.Smoke-intake pipe road 5 is obliquely installed, and 5 gradient with respect to the horizontal plane of institute's smoke-intake pipe road is 30 °, and smoke-intake pipe road 5 is with entering cigarette
One end of the connection of mouth 2 are less than the other end in smoke-intake pipe road 5.
Heat exchanger tube 8 includes outer tube 16 and inner tube 17, and the coaxial sleeve of outer tube 16 has space, inner tube located at the outside of inner tube 17 and interval
17 one end closing, the anchor ring closing between the other end and outer tube 16 of inner tube 17, the periphery of inner tube 17 are provided with spurt hole
18, the upper end of the arrangement density of spurt hole 18 along inner tube 17 gradually increases to the lower end of inner tube 17.
The operation principle of the present invention：Flue gas enters tower body 1 by smoke-intake pipe road 5, and at the same time, medium passes sequentially through A rooms
10th, heat exchanger tube 8, C rooms 14 and B rooms 11, heat convection is carried out with flue gas.Flue gas after heat exchange and taking off under the sprinkling of spray equipment 4
Sulphur agent is reacted, and is discharged by exhaust opening 3.Desulfurizing agent generates gypsum with falling into the bottom of tower body 1 after smoke reaction, with oxygen reaction.
Embodiments of the invention are elaborated above in conjunction with accompanying drawing, but the present invention is not limited to above-mentioned implementation
Example, in those of ordinary skill in the art's possessed knowledge, can also do on the premise of present inventive concept is not departed from
Go out various change.
Claims (8)
1. a kind of white clay method fume desulfurizing tower, including tower body（1）, the tower body（1）It is provided with smoke inlet（2）And exhaust opening（3）,
Spray equipment is provided with tower body（4）, it is characterised in that：The smoke inlet（2）With smoke-intake pipe road（5）Connection, the smoke-intake pipe road
（5）Rectangular cross-section, smoke-intake pipe road（5）Two opposite side walls outside be respectively equipped with the first casing（6）With the second casing（7）,
Smoke-intake pipe road（5）Inside be provided with heat exchanger tube（8）；First casing（6）Inside is by dividing plate（9）It is divided into A rooms（10）With B rooms
（11）, the first casing（6）It is provided with medium inlet（12）And media outlet（13）, A rooms（10）With medium inlet（12）Connection, B
Room（11）With media outlet（13）Connection；Second casing（7）Inside is provided with C rooms（14）, A rooms（10）With C rooms（14）, B rooms
（11）Pass sequentially through heat exchanger tube（8）Connection；The smoke-intake pipe road（5）It is obliquely installed, smoke-intake pipe road（5）With smoke inlet（2）Connection
One end be less than smoke-intake pipe road（5）The other end.
2. white clay method fume desulfurizing tower according to claim 1, it is characterised in that：The smoke-intake pipe road（5）Relative to water
The gradient of plane is 10 ° ~ 35 °.
3. white clay method fume desulfurizing tower according to claim 1, it is characterised in that：The tower body（1）Inwall is provided with gear
Cap（15）, the gear cap（15）Positioned at smoke inlet（2）It is upper along at.
4. according to any described white clay method fume desulfurizing tower of claim 1 ~ 3, it is characterised in that：The heat exchanger tube（8）Including
Outer tube（16）And inner tube（17）, the outer tube（16）Coaxial sleeve is located at inner tube（17）There are space, inner tube in outside and interval（17）'s
One end is closed, inner tube（17）The other end and outer tube（16）Between anchor ring closing, inner tube（17）Periphery be provided with jet flow
Hole（18）.
5. white clay method fume desulfurizing tower according to claim 4, it is characterised in that：The spurt hole（18）Arrangement density
Along inner tube（17）Upper end to inner tube（17）Lower end gradually increase.
6. according to any described white clay method fume desulfurizing tower of claim 1 ~ 3, it is characterised in that：The heat exchanger tube（8）Two
End is provided with flange connector（19）, the flange connector（19）Respectively with smoke-intake pipe road（5）Two opposite side walls be welded and fixed.
7. according to any described white clay method fume desulfurizing tower of claim 1,2,3,5, it is characterised in that：The tower body（1）'s
Bottom and oxidation fan（20）Connection.
8. white clay method fume desulfurizing tower according to claim 7, it is characterised in that：The tower body（1）Bottom be provided with it is more
Individual screw propeller（21）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610515148.8A CN105920993B (en) | 2016-07-04 | 2016-07-04 | A kind of white clay method fume desulfurizing tower |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610515148.8A CN105920993B (en) | 2016-07-04 | 2016-07-04 | A kind of white clay method fume desulfurizing tower |
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| CN105920993A CN105920993A (en) | 2016-09-07 |
| CN105920993B true CN105920993B (en) | 2018-04-06 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107648960A (en) * | 2017-10-25 | 2018-02-02 | 安徽华创环保设备科技有限公司 | A kind of rinsing type emission-control equipment |
| CN111072091A (en) * | 2020-01-19 | 2020-04-28 | 济南山源环保科技有限公司 | System and method for treating desulfurization wastewater by using flue gas waste heat |
Citations (5)
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|---|---|---|---|---|
| CN2733290Y (en) * | 2004-08-11 | 2005-10-12 | 苏存章 | Multiple tube pass horizontal column tube type heat exchanger for aluminium smelting furnace |
| CN102654330A (en) * | 2012-06-06 | 2012-09-05 | 顺德职业技术学院 | Coupled evaporative condenser used for cascade heat pump hot water machine |
| CN104236331A (en) * | 2013-06-06 | 2014-12-24 | 浙江德谦节能科技有限公司 | Shell and tube type jet fin air heat exchanger |
| CN204582953U (en) * | 2015-05-11 | 2015-08-26 | 武汉凯迪电力环保有限公司 | A kind of energy-saving desulfuration device that simultaneously can remove multiple pollutant |
| CN205796940U (en) * | 2016-07-04 | 2016-12-14 | 山东太阳纸业股份有限公司 | A kind of white clay method fume desulfurizing tower |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6151533B2 (en) * | 2013-02-22 | 2017-06-21 | 三菱重工業株式会社 | Denitration pack loading system and method for exhaust heat recovery boiler, and exhaust heat recovery boiler |
-
2016
- 2016-07-04 CN CN201610515148.8A patent/CN105920993B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2733290Y (en) * | 2004-08-11 | 2005-10-12 | 苏存章 | Multiple tube pass horizontal column tube type heat exchanger for aluminium smelting furnace |
| CN102654330A (en) * | 2012-06-06 | 2012-09-05 | 顺德职业技术学院 | Coupled evaporative condenser used for cascade heat pump hot water machine |
| CN104236331A (en) * | 2013-06-06 | 2014-12-24 | 浙江德谦节能科技有限公司 | Shell and tube type jet fin air heat exchanger |
| CN204582953U (en) * | 2015-05-11 | 2015-08-26 | 武汉凯迪电力环保有限公司 | A kind of energy-saving desulfuration device that simultaneously can remove multiple pollutant |
| CN205796940U (en) * | 2016-07-04 | 2016-12-14 | 山东太阳纸业股份有限公司 | A kind of white clay method fume desulfurizing tower |
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Denomination of invention: A white mud flue gas desulfurization tower Effective date of registration: 20211229 Granted publication date: 20180406 Pledgee: Bank of Jining Limited by Share Ltd. Qufu branch Pledgor: SHANDONG TAIYANGZHIYE Co.,Ltd. Registration number: Y2021980016992 |
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