CN107051177B - Desulfurizing dust-removing pneumatic-hydraulic dynamic cyclone synergistic device - Google Patents
Desulfurizing dust-removing pneumatic-hydraulic dynamic cyclone synergistic device Download PDFInfo
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- CN107051177B CN107051177B CN201710433345.XA CN201710433345A CN107051177B CN 107051177 B CN107051177 B CN 107051177B CN 201710433345 A CN201710433345 A CN 201710433345A CN 107051177 B CN107051177 B CN 107051177B
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- core
- plate
- desulfurization
- reaction
- absorption tower
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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
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/80—Semi-solid phase processes, i.e. by using slurries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
-
- 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
- B01D53/504—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 device
-
- 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
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/604—Hydroxides
-
- 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
Abstract
The invention discloses a desulfurization dust removal aerodynamic cyclone synergistic device, which is positioned between a flue gas inlet and a spraying layer of an absorption tower and comprises the following components: the core circulating plate is obliquely arranged in the circumferential direction of the inner wall of the absorption tower, one end of the core circulating plate is welded and fixed on the inner wall of the absorption tower, and the bottom surface of the other end of the core circulating plate is welded and fixed with supporting steel bars which are welded and fixed with the inner wall of the absorption tower; the core circulation dust accumulation pipes are fixedly arranged on the lower surface of the core circulation plate, and a plurality of core circulation dust accumulation pipes are uniformly distributed on the lower surface of the core circulation plate; the reaction circulating plate is vertically welded and fixed on the upper surface of the core circulating plate, a plurality of reaction circulating plates are uniformly distributed on the upper surface of the core circulating plate, and a plurality of grooves are formed in the reaction circulating plate; and the reaction power hole is formed in the middle of the reaction circulating plate. The invention has the beneficial effects that: the desulfurization and dust removal efficiency is improved, and meanwhile, the distribution condition of a flow field in the absorption tower is optimized.
Description
Technical Field
The invention relates to the technical field of desulfurization and dust removal, in particular to a desulfurization and dust removal aerodynamic cyclone synergistic device.
Background
The limestone/lime-gypsum desulfurization technology is the most mature, practical and stable in running condition desulfurization technology in the current desulfurization method. The desulfurization process is gas-liquid reaction, the desulfurization reaction rate is high, the desulfurization efficiency is high, the calcium utilization rate is high, and when the calcium-sulfur ratio is equal to 1, the desulfurization efficiency can reach more than 90%, so that the method is suitable for flue gas desulfurization of large-scale coal-fired power station boilers.
In the prior art, the limestone/lime-gypsum desulfurization technology is to absorb SO of flue gas in an absorption tower by lime or limestone slurry 2 Acid gases, dust and the like are absorbed and oxidized. Firstly absorbing and generating calcium sulfite, and then oxidizing the calcium sulfite into calcium sulfate, namely gypsum. The absorption tower is core equipment in wet desulfurization technology, alkaline slurry is pumped to spray nozzles of spray layers arranged at different heights in the absorption tower through a circulating pump, and the slurry forms a large number of small liquid drops and descends downwards after being sprayed out through the spray nozzles, and meanwhileThe flue gas containing acidic polluted gas and dust flows upwards in countercurrent, and during the period, the gas phase and the liquid phase are fully contacted and react and wash the acidic gas, the dust and the like contained in the flue gas.
However, in the existing desulfurizing and dedusting device of the absorption tower, SO escapes from the absorption tower 2 In comparison with SO in the flue gas 2 The residence time in the absorption tower is short, and SO in the flue gas is short 2 The desulfurization efficiency is only 95% due to the incapability of allowing separate reaction with limestone slurry, and the desulfurization outlet is discharged as smoke dust and SO 2 The discharge concentration is greater than 30 mg/cubic meter, 100 mg/cubic meter, respectively. Therefore, the prior conventional desulfurization dust removal device can not meet the emission requirement of ultra-low emission operation.
Disclosure of Invention
In order to solve the problems, the invention aims to provide the desulfurization and dust removal aerodynamic cyclone synergistic device, which improves desulfurization and dust removal efficiency and optimizes flow field distribution in an absorption tower.
The invention provides a desulfurization and dust removal aerodynamic cyclone synergistic device, which is positioned between a flue gas inlet and a spray layer of an absorption tower, and comprises:
the core circulating plate is obliquely arranged in the circumferential direction of the inner wall of the absorption tower, one end of the core circulating plate is welded and fixed on the inner wall of the absorption tower, the bottom surface of the other end of the core circulating plate is welded and fixed with supporting steel bars, and the supporting steel bars are welded and fixed with the inner wall of the absorption tower;
the core circulating dust accumulation pipes are fixedly arranged on the lower surface of the core circulating plate, and a plurality of core circulating dust accumulation pipes are uniformly distributed on the lower surface of the core circulating plate;
the reaction circulating plates are vertically welded and fixed on the upper surface of the core circulating plate, a plurality of reaction circulating plates are uniformly distributed on the upper surface of the core circulating plate, and a plurality of grooves are uniformly formed in the reaction circulating plates;
and the reaction power hole is formed in the middle of the reaction circulating plate.
As a further improvement of the present invention, the inclination angle a of the core circulation plate with respect to the horizontal direction is greater than 0 degrees and less than 90 degrees.
As a further improvement of the present invention, the inclination angle a is 35 degrees.
As a further improvement of the invention, the supporting steel bars are triangular steel bars.
As a further improvement of the present invention, the core circulation plate is made of 2205 stainless steel.
As a further improvement of the present invention, the core circulation plate has a thickness of 10mm, a width of 450mm, and a length less than the diameter of the absorption tower.
As a further improvement of the invention, the core circulating dust accumulation pipe is made of 316L stainless steel.
As a further development of the invention, the nominal diameter DN of the core circulation dust tube is 65mm.
As a further improvement of the present invention, the reaction circulation plate is made of 2205 stainless steel.
As a further improvement of the present invention, the thickness of the reaction circulation plate is 10mm.
The beneficial effects of the invention are as follows:
1. through the core circulating dust accumulation pipe, more limestone or gypsum slurry carrying dust and large particles in slurry in the flue gas can be fully adsorbed;
2. the gas-liquid dynamic circulation and desulfurization re-reaction effects are achieved through the reaction circulation plate and the reaction power holes;
3. the desulfurization and dust removal aerodynamic cyclone synergistic device plays a role in desulfurization and dust removal synergistic effect, and the core circulation plate, the core circulation dust accumulation pipe, the reaction circulation plate and the reaction power hole are mutually synergistic in desulfurization and dust removal; the limestone or gypsum slurry carrying dust and large particles in the slurry in the flue gas can be mostly removed after passing through the core circulating dust accumulation pipe, meanwhile, after the flue gas passes through the grooves on the reaction circulating plate, the flue gas is rectified to form a uniform flow field, and meanwhile, after the flue gas passes through the reaction power holes, the contact opportunity of the flue gas and the limestone slurry can be increased, SO that the SO in the flue gas in the desulfurization absorption tower is prolonged 2 And stoneThe reaction time of the limestone slurry is that SO in the flue gas in the desulfurization absorption tower 2 Fully reacts with limestone slurry again, and ensures that the emission limit after modification is (namely under the condition of 6% of the reference oxygen content): sulfur dioxide less than or equal to 35 mg/cubic meter and smoke less than or equal to 10 mg/cubic meter).
Drawings
Fig. 1 is a schematic structural diagram of a desulfurization dust-removing aerodynamic cyclone synergistic device according to an embodiment of the invention.
In the drawing the view of the figure,
1. an inner wall of the absorption tower; 2. a core circulation plate; 3. supporting the steel bar; 4. a core circulating dust accumulation pipe; 5. a reaction circulation plate; 6. reaction power hole.
Detailed Description
The invention will now be described in further detail with reference to specific examples thereof in connection with the accompanying drawings.
In embodiment 1, as shown in fig. 1, the device for enhancing the desulfurization and dust removal aerodynamic cyclone in the embodiment of the invention is located between a flue gas inlet and a spray layer of an absorption tower, and comprises: the device comprises a core circulation plate 2, a core circulation dust accumulation pipe 4, a reaction circulation plate 5 and a reaction power hole 6.
The core circulating plate 2 is obliquely arranged on the circumferential direction of the inner wall 1 of the absorption tower, one end of the core circulating plate 2 is welded and fixed on the inner wall 1 of the absorption tower, the bottom surface of the other end of the core circulating plate 2 is welded and fixed with the supporting steel bar 3, and the supporting steel bar 3 is welded and fixed with the inner wall 1 of the absorption tower. The supporting steel bar 3 plays a fixed role, and for achieving a better fixed supporting effect, the supporting steel bar 3 adopts a triangular steel bar. The inclined angle of the core circulating plate 2 influences the effect of flue gas swirling flow, the inclined angle A of the core circulating plate 2 and the horizontal direction is larger than 0 degrees and smaller than 90 degrees, and the inclined angle A is suitable for achieving a good swirling flow effect.
The core circulation laying dust pipe 4 is fixedly arranged on the lower surface of the core circulation plate 2, and a plurality of core circulation laying dust pipes 4 are uniformly distributed on the lower surface of the core circulation plate 2. Through the core circulation dust pipe 4, more limestone or gypsum slurry carrying dust and large particles in slurry in the flue gas can be fully adsorbed.
The reaction circulating plates 5 are vertically welded and fixed on the upper surface of the core circulating plate 2, a plurality of reaction circulating plates 5 are uniformly distributed on the upper surface of the core circulating plate 2, and a plurality of grooves are uniformly formed on the reaction circulating plates 5. The arrangement of the uniform grooves ensures that the flue gas is more uniform around the disturbance of the reaction circulating plate 5, and the flue gas is rectified to form a uniform flow field.
The reaction power hole 6 is arranged in the middle of the reaction circulating plate 5, and the contact opportunity of the flue gas and limestone slurry can be increased after the flue gas passes through the reaction power hole, SO that SO in the flue gas in the desulfurization absorption tower can be prolonged 2 Reaction time with limestone slurry to enable SO in flue gas in a desulfurization absorption tower 2 Fully reacts with the limestone slurry again.
Wherein, the core circulating plate 2 adopts 2205 stainless steel, the thickness is 10mm, the width is 450mm, and the length is smaller than the diameter of the absorption tower (ensures that flue gas can enter the desulfurization dust removal aerodynamic cyclone synergistic device). The core circulation dust pipe 4 is made of 316L stainless steel, and the nominal diameter DN is 65mm. The reaction circulation plate 5 is made of 2205 stainless steel and has a thickness of 10mm.
Flue gas flows upwards from the bottom of the absorption tower, and before the spraying layer, desulfurization and dust removal are carried out by the desulfurization and dust removal aerodynamic cyclone synergistic device. The core circulation plate, the core circulation dust accumulation pipe, the reaction circulation plate and the reaction power hole are mutually cooperated for desulfurization and dust removal. The limestone or gypsum slurry carrying large particles in the dust and slurry in the flue gas is mostly removed after passing through a core circulating dust accumulation pipe arranged on the ground of a core circulating plate; after the flue gas with the dust removed by the dust carrying part bypasses the core circulating plate, the flue gas passes through a plurality of reaction circulating plates uniformly arranged on the upper surface of the core circulating plate to form a convoluted air flow, and after passing through a plurality of uniformly arranged grooves on the reaction circulating plate, the flue gas is rectified to form a uniform flow field; after the uniform flue gas passes through the reaction power holes, the contact opportunity of the flue gas and limestone slurry can be increased, and SO in the flue gas in the desulfurization absorption tower can be prolonged 2 Reaction time with limestone slurry to enable SO in flue gas in a desulfurization absorption tower 2 Fully reacts with limestone slurry again to improve the removal efficiency of sulfur oxides.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a desulfurization dust removal aerodynamic cyclone synergistic device which characterized in that, desulfurization dust removal aerodynamic cyclone synergistic device is located between the flue gas entry of absorption tower and the spraying layer, desulfurization dust removal aerodynamic cyclone synergistic device includes:
the core circulation plate (2) is obliquely arranged on the circumferential direction of the inner wall (1) of the absorption tower, one end of the core circulation plate (2) is welded and fixed on the inner wall (1) of the absorption tower, the bottom surface of the other end of the core circulation plate (2) is welded and fixed with a supporting steel bar (3), the supporting steel bar (3) is welded and fixed with the inner wall (1) of the absorption tower, the inclination angle A between the core circulation plate (2) and the horizontal direction is larger than 0 and smaller than 90 degrees, and the thickness of the core circulation plate (2) is 10mm, the width of the core circulation plate is 450mm, and the length of the core circulation plate is smaller than the diameter of the absorption tower;
the core circulation dust accumulation pipes (4) are fixedly arranged on the lower surface of the core circulation plate (2), a plurality of the core circulation dust accumulation pipes (4) are uniformly distributed on the lower surface of the core circulation plate (2), and the nominal diameter DN of each core circulation dust accumulation pipe (4) is 65mm;
the reaction circulating plates (5) are vertically welded and fixed on the upper surface of the core circulating plate (2), a plurality of reaction circulating plates (5) are uniformly distributed on the upper surface of the core circulating plate (2), a plurality of grooves are uniformly formed in the reaction circulating plates (5), and the thickness of the reaction circulating plates (5) is 10mm;
and the reaction power hole (6) is formed in the middle of the reaction circulating plate (5).
2. The desulfurization and dust removal aerodynamic cyclone synergistic device according to claim 1, wherein the inclination angle a is 35 degrees.
3. The desulfurization and dust removal aerodynamic cyclone synergistic device according to claim 1, wherein the support steel bars (3) are triangular steel bars.
4. The desulfurization and dust removal aerodynamic cyclone synergistic device according to claim 1, wherein the core circulation plate (2) is made of 2205 stainless steel.
5. The desulfurization and dedusting aerodynamic cyclone synergistic device according to claim 1, wherein the core circulating dust accumulation pipe (4) is made of 316L stainless steel.
6. The desulfurization and dust removal aerodynamic cyclone synergistic device according to claim 1, wherein the reaction circulation plate (5) is made of 2205 stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710433345.XA CN107051177B (en) | 2017-06-09 | 2017-06-09 | Desulfurizing dust-removing pneumatic-hydraulic dynamic cyclone synergistic device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710433345.XA CN107051177B (en) | 2017-06-09 | 2017-06-09 | Desulfurizing dust-removing pneumatic-hydraulic dynamic cyclone synergistic device |
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| CN107051177A CN107051177A (en) | 2017-08-18 |
| CN107051177B true CN107051177B (en) | 2023-07-25 |
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2017
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH08332345A (en) * | 1995-06-08 | 1996-12-17 | Chiyoda Corp | Activated carbon-based catalyst reaction apparatus and waste gas desulfurization apparatus using same and method of desulfurization |
| JP2003334420A (en) * | 2002-05-21 | 2003-11-25 | Babcock Hitachi Kk | Wet exhaust gas desulfurization equipment |
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| CN107051177A (en) | 2017-08-18 |
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