CN200991635Y - Rotary charged spraying half-dry method desulfurizing device - Google Patents
Rotary charged spraying half-dry method desulfurizing device Download PDFInfo
- Publication number
- CN200991635Y CN200991635Y CN 200720006066 CN200720006066U CN200991635Y CN 200991635 Y CN200991635 Y CN 200991635Y CN 200720006066 CN200720006066 CN 200720006066 CN 200720006066 U CN200720006066 U CN 200720006066U CN 200991635 Y CN200991635 Y CN 200991635Y
- Authority
- CN
- China
- Prior art keywords
- tower
- desulfurizing agent
- desulfurizing
- shower nozzle
- air inlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 238000000034 method Methods 0.000 title claims abstract description 48
- 238000005507 spraying Methods 0.000 title claims abstract description 14
- 230000003009 desulfurizing effect Effects 0.000 title claims description 61
- 239000007921 spray Substances 0.000 claims abstract description 15
- 239000003795 chemical substances by application Substances 0.000 claims description 38
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 30
- 239000003546 flue gas Substances 0.000 claims description 30
- 238000006477 desulfuration reaction Methods 0.000 claims description 20
- 230000023556 desulfurization Effects 0.000 claims description 18
- 230000008569 process Effects 0.000 claims description 15
- 230000006698 induction Effects 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 3
- 239000000843 powder Substances 0.000 abstract description 11
- 239000008187 granular material Substances 0.000 abstract description 2
- 210000003608 fece Anatomy 0.000 abstract 2
- 238000001035 drying Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 9
- 239000000428 dust Substances 0.000 description 6
- 238000004581 coalescence Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 235000019738 Limestone Nutrition 0.000 description 4
- 239000006028 limestone Substances 0.000 description 4
- 239000003595 mist Substances 0.000 description 4
- 239000011593 sulfur Substances 0.000 description 4
- 229910052717 sulfur Inorganic materials 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000001694 spray drying Methods 0.000 description 2
- 206010039509 Scab Diseases 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- JGIATAMCQXIDNZ-UHFFFAOYSA-N calcium sulfide Chemical compound [Ca]=S JGIATAMCQXIDNZ-UHFFFAOYSA-N 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011236 particulate material Substances 0.000 description 1
- 239000002594 sorbent Substances 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model relates to a rotating charged spraying semi-dry process desulphurization unit, which comprises a desulphurization tower. The utility model is characterized in that: a main air inlet pipe extending to the cavity upper part of the tower body is positioned on the middle part of the desulphurization tower, and the side wall of the tower body lower part is provided with an air outlet. A desulfurizer spray head is positioned above the cavity of the desulphurization tower, and a high pressure charged electric appliance is positioned on the neighboring of the desulfurizer spray head to bring induced charge to the tiny dropping of the desulfurizer. The utility model can overcome the disadvantage of that: the alkalescence droppings of the tiny grains fogged by the high speed rotating sprayer are likely to have a collision and coagulate to droppings of big granule, and the spraying powder is not fine of the dry method pressure spray head, and the efficiency of the spray head is too low.
Description
Technical field
The utility model relates to a kind of rotation electrostatic charged spray semidry process desulfurizer.
Background technology
Following 3 stages have been experienced in the development of flue gas desulfurization technique in the world:
A) be representative first generation flue gas desulfurization with the limestone wet-process seventies in 20th century.
B) eighties in 20th century, with dry method, semidry method is the second generation flue gas desulfurization of representative.Mainly contain spray drying process, in-furnace calcium spraying adds humidification activation (LIFAC) behind the stove, flue gas circulating fluidized bed (CFB), cyclic semidry process sulfur removal technology (NID) etc.These desulfur technologies all adopt calcium-base absorbing agent basically, as lime or calcium hydroxide etc.Along with continuous improvement and the development to technology, equipment dependability improves, and system's availability reaches 97%, and desulfurization degree is generally 70%～95%, the medium small boiler of low-sulfur coal in being fit to use.
C) nineties in 20th century, with wet method, the third generation flue gas desulfurization of semidry method and dry desulfurizing process synchronized development.
Owing to technology and reason economically, some flue gas desulfurization techniques are eliminated, and main flow technology, as the limestone-gypsum wet method, flue gas circulating fluidized bed, in-furnace calcium spraying adds humidification activation behind the stove, spray drying process, the NID that gas suspension absorbs after sulfur removal technology (GSA) and the improvement has but obtained further development, and is tending towards ripe.The advantage of these flue gas desulfurization techniques is: desulfurization degree height (can reach more than 95%); System's availability height; Technological process is simplified; System's power consumption is low; Investment and operating cost are low.Since the nineties in 20th century, China has successively introduced various types of desulfur technologies from external, has built up 6 demonstration projects, relates to wet method, semidry method and dry flue gas desulphurization technology.
Dry method, semidry method is on the basis of wet method, improve the desulfurizing agent shower nozzle, make fully the contacting of desulfurizing agent and flue gas, improve the absorption efficiency of desulfurizing agent. wet method, the desulfurizing agent of semidry method and the present dry method of using all is a lime stone, lime, the maximum difference of their usings method is exactly that desulfurizing agent is different with the gas liquid ratio of flue gas, the wet desulphurization method liquid-gas ratio of the first generation is at 20 liters of desulfurizing agents/more than the cubic meter flue gas, the semidry method liquid-gas ratio of the second generation is at 0.5 liter of desulfurizing agent/cubic meter flue gas. the minimizing of liquid-gas ratio, the internal circulating load of desulfurizing agent significantly reduces, and the absorption resistance of desulfurizing tower reduces; Can reduce power consumption like this, most critical be to have reduced the wet method system temperature to be lower than flue gas dew point, the problem that needs large number quipments, pipeline corrosion protection, omitted cigarette roadside road, GGH, guaranteed that boiler switches the production accident that causes because of the wet method fault is urgent. for this reason, people constantly study new, more the efficient desulfurizing agent shower nozzle improves the result of use of improving various sulfur methods.
At present, the various shower nozzles of the device of desulfurization from flue gas, the high speed rotating spraying shower nozzle of semidry method and the charged powder injection desulphurization shower nozzle of the pulverized limestone of dry method are the comparatively ideal spraying nozzle of representative:
High speed rotary nozzle per minute rotation 10000～20000 times/minute, slip is got rid of into carefully dripping about 40～100 microns, well contact with flue gas, finish acidic flue gas with alkaline desulfurizing agent salt-forming reaction. still, easy collision coalescence becomes oarse-grained drop in the flue gas because the alkalies of the fine particle of high speed rotating spraying machine rotation mist formation drops in, reduced and the catalytic specific area of flue gas, caused can not improving of desulfuration efficiency;
The charged shower nozzle that dusts of pulverized limestone is desulfurization alkalescence powder to be sprayed into 100～2 00 microns mist powder under the effect of medium air with the pressure type shower nozzle, these mist powder are through the charged fine particulate material of high pressure, owing to all have the particle of same electric charge, under the mutually red effect of electric charge, can not collide coalescence is big powder, thereby guaranteed not reducing of desulfurization powder specific area, well contact with flue gas, finish the purpose of dry desulfurization. still, because the shower nozzle of dry method desulfurizer powder uses two streaming pressure nozzles usually, need a large amount of medium air, make this device very huge, energy waste is also very serious, and it is very big to think to improve powder granularity of spray fineness difficulty again, is restricted so method is applied.
Summary of the invention
The purpose of this utility model provides a kind of rotation electrostatic charged spray semidry process desulfurizer, the alkalies that it can overcome the fine particle of high speed rotating spraying machine rotation mist formation respectively drops in the flue gas shortcoming that collision coalescence easily becomes oarse-grained drop, can overcome again the dry method pressure nozzle dust thinless, the deficiency that shower nozzle efficient is too low.
Rotation electrostatic charged spray semidry process desulfurizer of the present utility model, comprise desulfurizing tower, it is characterized in that: described desulfurizing tower middle part is provided with the air inlet that extends tower body inner chamber top from bottom to top and is responsible for, the tower body lower sides is provided with exhaust outlet, described desulfurizing tower inner chamber top is provided with the desulfurizing agent shower nozzle, is provided with near the described desulfurizing agent shower nozzle in order to apply the charged high-voltage charging electrical equipment of induction to the desulfurizing agent fine drop.
The utility model can overcome the charged desulfurizer of dry method needs a large amount of air of other feeding to blow afloat dispersion desulfurization powder, so that increased the shortcoming of load of dust remove; Powder is mixed in slip, and the spraying granule of formation is tiny; Can overcome the easy coalescence of semidry method high velocity fog drop again and grow into oarse-grained defective. the utility model rotation electrostatic charged spray desulfurizer will make the small flue gas that evenly is suspended in of desulfurizing agent spraying, keep higher desulfurized effect. reduce the calcium sulfur ratio of desulfurizing agent, further improve desulfuration efficiency, under energy-saving and cost-reducing prerequisite, near the effect of wet desulphurization, reduce cost of investment, energy efficient, minimizing corrosion greatly than wet method.
Description of drawings
Fig. 1 is the utility model embodiment organigram.
Among Fig. 1: desulfurizing tower 2; Air inlet 14 is responsible in air inlet; Air inlet is responsible for 12; The mouth of pipe 8 is assisted in air inlet; The auxilliary pipe 1 of air inlet; Exhaust outlet 6; Blast pipe 15; Slag-drip opening 16; Residual cake valve 7; Desulfurizing agent shower nozzle 10; Desulfurizing agent carrier pipe 9; Desulfurizing agent pump 13; High-voltage charging electrical equipment 11; Dc high-voltage source apparatus 5; Power line 4; Seal 3.
The specific embodiment
The utility model embodiment one comprises desulfurizing tower 2, it is characterized in that: described desulfurizing tower 2 middle parts are provided with the air inlet that extends tower body inner chamber top from bottom to top and are responsible for 12, the tower body lower sides is provided with exhaust outlet 6, described tower inner chamber top is provided with desulfurizing agent shower nozzle 10, is provided with near the described desulfurizing agent shower nozzle 10 in order to apply the charged high-voltage charging electrical equipment 11 of induction to the desulfurizing agent fine drop.
Desulfurization tower body top is provided with facing to air inlet and is responsible for 12 air inlets 14 so that flue gas stream is scattered the auxilliary pipe 1 of uniform air inlet, described desulfurizing agent shower nozzle 10 is the rotating spraying shower nozzle, and the desulfurizing agent carrier pipe 9 of this shower nozzle through passing the desulfurizing tower body is connected with the outlet of desulfurizing agent pump 13.
The power line of described high-voltage charging electrical equipment 11 is connected with tower dc high-voltage source apparatus 5 outward by the insulation support device that is arranged on the desulfurizing tower.
Described desulfurization tower body bottom is provided with slag-drip opening 16.
Described slag-drip opening is provided with residual cake valve 7.
When using the utility model, the most of flue gas of boiler is responsible for (12) from air inlet and is entered into desulfurizing tower top by the desulfurizing tower air inlet person in charge mouthful (14), for flue gas stream is evenly distributed, the sub-fraction flue gas enters into the desulfurizing tower top by the auxilliary mouth of pipe (8) of the auxilliary pipe of air inlet (1) air inlet, desulfurizing agent pump (13) carries desulfurizing agent to arrive rotating spraying shower nozzle (10) by desulfurizing agent carrier pipe (9), under high speed rotary nozzle action of centrifugal force, desulfurizing agent is got rid of into 40～100 microns fine drop, the high voltage source that is produced by dc high-voltage source apparatus (5) is connected to high-voltage charging electrical equipment (11) by power line (4), high-voltage charging electrical equipment (11) is arranged in by the suitable seat of desulfurizing agent shower nozzle (10), it is charged that desulfurizing agent is implemented induction, make the micron-sized fine drop of desulfurizing agent have same sex electric charge, repulsion does not produce coalescence mutually, keep high specific area and high activity well to react with flue gas, high-voltage power-line enters desulfurizing tower by seal (3) and is connected with charge electric appliance, guarantee insulation with tower body, acidic flue gas is had exhaust outlet 6 blast pipes 15 to go to subsequently dust dust arrester by the desulfurization flue gas that alkaline reactive desulfurizing agent generates behind the sulfate through the desulfurizing tower bottom, carry out emptying after the dust removal process, by big sorbent particle and scab and drop to the dust stratification of desulfurizing tower bottom, by desulfurizing tower bottom slag-drip opening (16) residual cake valve (7) regular discharge carry out scarfing cinder and handle.
Claims (5)
1, a kind of rotation electrostatic charged spray semidry process desulfurizer, comprise desulfurizing tower, it is characterized in that: described desulfurizing tower middle part is provided with the air inlet that extends tower body inner chamber top from bottom to top and is responsible for, the tower body lower sides is provided with exhaust outlet, described desulfurizing tower inner chamber top is provided with the desulfurizing agent shower nozzle, is provided with near the described desulfurizing agent shower nozzle in order to apply the charged high-voltage charging electrical equipment of induction to the desulfurizing agent fine drop.
2, want 1 described rotation electrostatic charged spray semidry process desulfurizer according to right, it is characterized in that: desulfurization tower body top is provided with facing to air inlet and is responsible for air inlet so that flue gas stream is scattered the auxilliary pipe of uniform air inlet, described desulfurizing agent shower nozzle is the rotating spraying shower nozzle, and the desulfurizing agent carrier pipe of this shower nozzle through passing the desulfurizing tower body is connected with the desulfurizing agent delivery side of pump.
3, want 1 or 2 described rotation electrostatic charged spray semidry process desulfurizers according to right, it is characterized in that: the power line of described high-voltage charging electrical equipment is connected with tower dc high-voltage source apparatus outward by the insulation support device that is arranged on the desulfurizing tower.
4, want the 3 rotation electrostatic charged spray semidry process desulfurizers of stating according to right, it is characterized in that: described desulfurization tower body bottom is provided with slag-drip opening.
5, want the 4 rotation electrostatic charged spray semidry process desulfurizers of stating according to right, it is characterized in that: described slag-drip opening is provided with residual cake valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200720006066 CN200991635Y (en) | 2007-01-12 | 2007-01-12 | Rotary charged spraying half-dry method desulfurizing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200720006066 CN200991635Y (en) | 2007-01-12 | 2007-01-12 | Rotary charged spraying half-dry method desulfurizing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200991635Y true CN200991635Y (en) | 2007-12-19 |
Family
ID=38944710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200720006066 Expired - Lifetime CN200991635Y (en) | 2007-01-12 | 2007-01-12 | Rotary charged spraying half-dry method desulfurizing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200991635Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101890290A (en) * | 2010-07-15 | 2010-11-24 | 华南理工大学 | A compound atomization wet desulfurization device with high voltage electrostatic |
| CN105903332A (en) * | 2016-06-23 | 2016-08-31 | 山东大学 | Semi-dry method desulfurization and denitrification integrated process and device in synergism with charged oxidation |
-
2007
- 2007-01-12 CN CN 200720006066 patent/CN200991635Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101890290A (en) * | 2010-07-15 | 2010-11-24 | 华南理工大学 | A compound atomization wet desulfurization device with high voltage electrostatic |
| CN105903332A (en) * | 2016-06-23 | 2016-08-31 | 山东大学 | Semi-dry method desulfurization and denitrification integrated process and device in synergism with charged oxidation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20071219 |
|
| EXPY | Termination of patent right or utility model |