CN2860600Y - Combined-circulation countercurrent absorbing tower - Google Patents
Combined-circulation countercurrent absorbing tower Download PDFInfo
- Publication number
- CN2860600Y CN2860600Y CN 200520125492 CN200520125492U CN2860600Y CN 2860600 Y CN2860600 Y CN 2860600Y CN 200520125492 CN200520125492 CN 200520125492 CN 200520125492 U CN200520125492 U CN 200520125492U CN 2860600 Y CN2860600 Y CN 2860600Y
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- demister
- tower
- following
- serum
- combined
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Abstract
The utility model provides a comprehensive circulation and convection absorption tower. An off-gas outlet is set on the top of the tower-tube and a serum reaction pool is set at the bottom of tower-tube. An off-gas inlet is set both in the serum reaction pool and on the tower-tube locating between the lower circulation-serum spraying devices which are above the serum reaction pool. A funnel-shape liquid collecting-returning device, a comprehensive controllable checking device, a top serum circulation spraying device, a top demister and a bottom demister successively locate in the tower-tube above the lower serum-circulation spraying device. The bottom sieve-hole board and a top sieve-hole board of comprehensive controllable checking device can revolve opposite each other and get connected through a supporting-frame. Inside the serum reaction pool, air-inlet connects with air-solution device. And plaster-serum outlet is set on the tower-tube of the bottom of serum reaction pool.
Description
Technical field:
The utility model relates to flue gas desulfurization device, is particularly suitable for the flue gas desulfurization that produces in enterprises' productions such as large-size thermal power plant, coking plant.
Background technology:
Along with the continuous growth of expanding economy and energy resource consumption, SO
2Discharge capacity increases day by day, and it is more and more serious that acid rain problem has become, the acid rain serious harm human healthy and living environment.No matter be national government, still existingly moving or preparing enterprise and relevant department and technical specialists such as newly-built generating, coking, SO
2Total emission volumn and concentration of emission have all caused great attention, have done a large amount of fruitful work, have obtained certain achievement, but problem is still very serious.
Flue gas desulfurization is divided into wet method, dry method and semi-dry desulphurization.Wherein wet desulphurization accounts for 85% of coal fired power generation installed capacity, at present, and the SO that wet desulphurization is adopted
2Absorption plant, summarize to get up to have the following disadvantages:
(1) the bigger absorption plant of flue gas flow field skewness, especially diameter.
(2) the absorption grout distribution inequality in the absorption plant, the liquid-gas ratio adjustable range is little, can not adapt to the variation tendency of coal, the desulfuration efficiency instability, system's operating flexibility is little.
(3) gas-liquid mass transfer weak effect, the absorbent utilization rate is low.
(4) operating cost height.
(5) the accessory substance gypsum is of poor quality, can not fully utilize on a large scale, and it is big to dispose difficulty, causes the huge wasting of resources.
Summary of the invention:
The purpose of this utility model provides a kind of system stable operation, desulfuration efficiency height, the higher combined-circulation convection current absorption tower that is used for flue gas desulfurization of gypsum quality of nothing waste and by-product.
The purpose of this utility model can realize by following technical measures:
There is the slurry reaction pond on this combined-circulation convection current absorption tower in the upper end is provided with the bottom of tower tube of exhanst gas outlet, the slurry reaction pond and be positioned at the top following circulating slurry sprinkling device between the tower tube on smoke inlet is arranged, in the tower tube of following circulating slurry sprinkling device top funnel liquid collecting reflux is arranged successively, compound controlled choke apparatus, cocycle slurries spray equipment, following demister reaches goes up demister, the counterrotating sieve tray down of doing of compound controlled choke apparatus is connected by support with last sieve tray, last demister, following demister, last sieve tray, the below of following sieve tray has water injector on the top respectively successively, last subordinate's water injector, water injector on the middle part, middle subordinate's water injector, have air-dissolving apparatus to be communicated with air intake in the slurry reaction pond, the tower tube of bottom, slurry reaction pond has the gypsum slurries outlet.
The purpose of this utility model also can realize by following technical measures:
Wash tub pipe is communicated with water injector on the middle part that is connected in support by support; Slurry reaction has agitator in the pond; Last demister and following demister are " V " shape demister; Last sieve tray and following sieve tray can be the lamina rotations, also can be that upper and lower laminate all rotates.
The utility model makes SO by setting up compound controlled choke apparatus and combined-circulation absorption system
2Absorption system is under the situation of boiler load generation than great fluctuation process, and smoke distribution and gas-liquid distribution still can be kept relatively stable, and builds the chemical reaction environment of the two turbulent flows of gas-liquid, three reaction zones and combined-circulation absorption system; (L/G) obtains better SO with lower liquid-gas ratio
2, SO
3, harmful substances such as HCI and HF removal effect, can reduce the number of plies of spray equipment in the tower and the power of slush pump, increase the treating capacity of flue gas, operating cost obviously reduces.In the pollution that removes smoke, can obtain the commercial gypsum of higher value.
The reaction zone of tower bottom makes the CaCO in the slurries
3With the SO in the flue gas
2, SO
3, harmful substance generation chemical reactions such as HCI and HF, generate CaSO
4The flue gas rising that is purified arrives the central reaction zone between funnel liquid collecting reflux and compound controlled choke apparatus, at this reaction zone flue gas because of being subjected to the obstruct of compound controlled choke apparatus, flue gas flow rate changes, add the slurries effect that comes from top reaction zone spray, produce the gas-liquid DIFFUSION IN TURBULENCE, chemical reaction rate is obviously accelerated, remaining SO
2And SO
3Further absorbed, generated CaSO
4, flue gas passes the last sieve tray of compound controlled choke apparatus and the sieve aperture of following sieve tray enters the top reaction zone, makes SO
2And SO
3Farthest absorbed, desulfurization degree is 97～98%; The flue gas of finishing sweetening process enters chimney and enters atmosphere after demist and heating.
The lime stone slurry reaction of flue gas (upper, middle and lower) and different PH, concentration and speed in the reaction zone of different condition, the system of assurance is under the optimum condition and moves.Sieve tray, following sieve tray and combined-circulation absorption system can be counterrotatingly gone up in increase in the tower, the two controls of gas-liquid have been realized, last sieve tray, sieve tray rotation under power-assisted hydraulic pressure or Pneumatic pressure power control down, two-ply pore relative position produces resistance flowing effect to adjust up and down, reaches the purpose of regulation and control flue gas stream.Flue gas treating capacity hour, laminate relatively rotates up and down, and vapour lock increases, and keeps the tower internal pressure relatively stable.Timing automatic bath shower nozzle is installed between two-ply, two plates are up and down carried out Xian clearly, keep pore unobstructed.System is produced under the situation of snare fluctuation at boiler load and coal-fired sulfur content, guarantee SO
2And SO
3Clearance is stable.
Lime stone slurry is ejected on the pore of compound controlled choke apparatus panel, and flue gas and lime stone slurry interact and produce the gas bubbling, and the decrease speed of spray droplet reduces relatively, and the liquid holdup in the unit volume is increased, and has increased SO
2And SO
3With the CaCO in the slurries
3Reaction table area and mass transfer rate.CaSO
3All be oxidized to CaSO
4, the gypsum quality is guaranteed, and can not take place by AlF
3And CaSO
3Cause to CaCO
3Inaccessible phenomenon takes place.In flue gas treating capacity hour, last dish is done and is relatively rotated, and staggers in the upper and lower plates hole site; When the flue gas treating capacity was big, the upper and lower plates hole site aligned up and down, and whole like this tower internal pressure keeps relative stability.
Flue gas enters the drop separation district after handling through desulfurization, because the deviation of streamline is realized gas-liquid separation under effect of inertia, drop impinges upon on the demister blade and is captured.Combined-circulation convection current adsorption tower smoke desulphurization system device adopts V-type flue gas demister.It mainly is to remove drop in the flue gas, and it is good to have discharge performance, demist efficient height, relatively opening big, be convenient to Xian clearly, advantage that resistance is little.
In lower reaction zone and slurry reaction pond, increased slurries secondary injection and the air-dissolving apparatus that is used for forced oxidation, make CaSO
3 H
2The O complete oxidation generates CaSO
42H
2O removes HF and HCI, and the pH value of slurries is low, has promoted CaCO
3The dissolving of (lime stone), so the consumption of lime stone reduces, the impurity in the by-produced gypsum is few, the quality height, the pure white degree of gypsum increases.
Description of drawings:
Fig. 1 is the schematic diagram of the utility model embodiment.
The specific embodiment:
There is slurry reaction pond 11 on this combined-circulation convection current absorption tower in the upper end is provided with the bottom of tower tube 2 of exhanst gas outlet 1, slurry reaction pond 11 and be positioned on the tower tube 2 of 9 of following circulating slurry sprinkling devices of top smoke inlet 16 is arranged, with in the tower tube 2 of following loop slurry inlet 10 following circulating slurry sprinkling device 9 tops that are communicated with on the tower tube 2 funnel liquid collecting reflux 8 is arranged successively, compound controlled choke apparatus 7, cocycle slurries spray equipment 5, V-shaped following demister 4 and last demister 3, cocycle slurries on the tower tube 2 inlet 6 is communicated with cocycle slurries spray equipment 5, the rotatable sieve tray 21 of going up of compound controlled choke apparatus 7 is connected by support 19 with following sieve tray 18, last demister 3, following demister 4, last sieve tray 21, the below of following sieve tray 18 has water injector 24 on the top that is provided with shower nozzle respectively successively, last subordinate's water injector 23, water injector 20 on the middle part, middle subordinate's water injector 17, agitator 15 and the air-dissolving apparatus 13 that is communicated with the air intake 14 that is connected tower tube 2 are arranged in the slurry reaction pond 11, the tower tube 2 of 11 bottoms, slurry reaction pond has gypsum slurries outlet 12, and wash tub pipe 22 is communicated with water injector 20 on the middle part that is connected in support 19.
Slurry reaction pond 11 is arranged in the bottom, absorption tower, makes of lined carbon steel, and the footpath, pond and the degree of depth were decided according to volume, the gypsum crystallization time of design slurries.Several suspension type agitators 15 are installed according to the slurries volume in the middle part in the pond, precipitate at 11 ends of slurry reaction pond to avoid the solid in the lime stone mixed serum.Slurries forced oxidation in 13 pairs of reaction tanks of aeration machines is installed by central authorities in the pond.
Lower floor's demister 4 upper and lower faces install respectively water injector 24 on the top, on 23 pairs of following demisters 4 of subordinate's water injector and last demister 3 carried out automatic jet douche once every 40 minutes, to guarantee the cleaning of demister, otherwise can produce fouling and blockage problem, can only depend on artificial clear Xian or change blade with restore funcitons.
The support 19 of compound controlled choke apparatus is used to support sieve tray 21 and following sieve tray 18 and relevant dynamical system.
Claims (4)
1, combined-circulation convection current absorption tower, it is characterized in that the upper end is provided with in the bottom of tower tube (2) of exhanst gas outlet (1) slurry reaction pond (11) is arranged, slurry reaction pond (11) and be positioned at the top following circulating slurry sprinkling device (9) between tower tube (2) on smoke inlet (16) is arranged, in the tower tube (2) of following circulating slurry sprinkling device (9) top funnel liquid collecting reflux (8) is arranged successively, compound controlled choke apparatus (7), cocycle slurries spray equipment (5), following demister (4) reaches goes up demister (3), the counterrotating sieve tray (18) down of doing of compound controlled choke apparatus (7) is connected by support (19) with last sieve tray (21), last demister (3), following demister (4), last sieve tray (21), the below of following sieve tray (18) has water injector on the top (24) respectively successively, last subordinate's water injector (23), water injector on the middle part (20), middle subordinate's water injector (17), have air-dissolving apparatus (13) to be communicated with air intake (14) in the slurry reaction pond (11), the tower tube (2) of slurry reaction pond (11) bottom has gypsum slurries outlet (12).
2, combined-circulation convection current according to claim 1 absorption tower is characterized in that wash tub pipe (22) is communicated with water injector (20) on the middle part that is connected in support (19).
3, combined-circulation convection current according to claim 1 absorption tower is characterized in that agitator (15) is arranged in the slurry reaction pond (11).
4, combined-circulation convection current according to claim 1 absorption tower is characterized in that demister (3) and following demister (4) are " V " shape demister.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520125492 CN2860600Y (en) | 2005-12-07 | 2005-12-07 | Combined-circulation countercurrent absorbing tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520125492 CN2860600Y (en) | 2005-12-07 | 2005-12-07 | Combined-circulation countercurrent absorbing tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2860600Y true CN2860600Y (en) | 2007-01-24 |
Family
ID=37658229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520125492 Expired - Fee Related CN2860600Y (en) | 2005-12-07 | 2005-12-07 | Combined-circulation countercurrent absorbing tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2860600Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104959016A (en) * | 2015-06-10 | 2015-10-07 | 浙江菲达脱硫工程有限公司 | Double-stage sectionalized spray desulfurization tower |
| CN105944550A (en) * | 2016-07-16 | 2016-09-21 | 江苏民生重工有限公司 | Calcium-based wet desulfurization tower |
| CN108072043A (en) * | 2017-12-13 | 2018-05-25 | 湖南云平环保科技有限公司 | Small-sized consumer waste incineration cleaning treatment system |
| CN113477062A (en) * | 2021-07-26 | 2021-10-08 | 东台市顺达工业气体有限公司 | Acetylene gas purification device for desorbing waste sodium hypochlorite by acetylene purification |
-
2005
- 2005-12-07 CN CN 200520125492 patent/CN2860600Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104959016A (en) * | 2015-06-10 | 2015-10-07 | 浙江菲达脱硫工程有限公司 | Double-stage sectionalized spray desulfurization tower |
| CN105944550A (en) * | 2016-07-16 | 2016-09-21 | 江苏民生重工有限公司 | Calcium-based wet desulfurization tower |
| CN108072043A (en) * | 2017-12-13 | 2018-05-25 | 湖南云平环保科技有限公司 | Small-sized consumer waste incineration cleaning treatment system |
| CN113477062A (en) * | 2021-07-26 | 2021-10-08 | 东台市顺达工业气体有限公司 | Acetylene gas purification device for desorbing waste sodium hypochlorite by acetylene purification |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070124 Termination date: 20121207 |