CN201578987U - Alkaline liquid pre-absorption circulating half-dry desulphurization device - Google Patents
Alkaline liquid pre-absorption circulating half-dry desulphurization device Download PDFInfo
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- CN201578987U CN201578987U CN2009201989275U CN200920198927U CN201578987U CN 201578987 U CN201578987 U CN 201578987U CN 2009201989275 U CN2009201989275 U CN 2009201989275U CN 200920198927 U CN200920198927 U CN 200920198927U CN 201578987 U CN201578987 U CN 201578987U
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- absorption
- flue gas
- alkali lye
- adjusting device
- shaped reactor
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Abstract
The utility model discloses an alkaline liquid pre-absorption circulating half-dry desulphurization device, which comprises a U-shaped reactor and a dust catcher, wherein the dust catcher is connected at one end of the upper part of the U-shaped reactor. The lower end of the dust hopper of the dust catcher is connected with the input end of a conditioner. The input end of the conditioner is additionally connected with a dry powder absorbent silo. A conditioning alkaline liquid filling port is arranged at the upper part of the conditioner. The output end of the conditioner is connected with the U-shaped reactor. A pneumatic conveying silo pump is connected at the lower end of the dust silo of the dust catcher. The purified flue gas outlet of the dust catcher is connected with a chimney through a draught fan. The utility model has the advantages that the temperature of the high-temperature flue gas is decreased and the humidity of the high-temperature flue gas is increased, the specific resistance of the dust is reduced, the desulphurization environment is improved, the added amount of the dry powder absorbent in the subsequent process is reduced, the pressure loss of the system and the equipment wear are reduced, the problems that the spray nozzle is blocked and the mixed dust sticks the wall to cause fouling are solved, the flue gas flow field and the mixed dust flow field are optimized, and the desulphurization efficiency is improved.
Description
Technical field
The utility model relates to a kind of flue gas desulphurization unit, specifically, relates to a kind of alkali lye pre-absorption cyclic semidry process desulfurizer.
Background technology
Existing flue gas dry desulfurizing technology mainly comprises circulating fluid bed flue-gas desulfurizing and cyclic semidry process flue gas desulfurization two class technologies.
Circulating fluidized bed desulfurization technique adopts fluidized-bed reactor, the built-in nozzle of reactor is added fresh water (FW) or absorbent slurry, utilizes high-temperature flue gas to evaporate the water to realize favourable desulfurization environment, and reactor is connected with deduster, the flying dust that captures partly circulates and enters reactor, the part discharger.This technology since nozzle and combination ash in same reactor, add, easily cause the water evaporation not exclusively, wall of reactor produces fouling, destroy flue gas flow field, thereby cause problem such as fluid bed avalanche, and nozzle is influenced by combination ash very easily to stop up, cause system's fluctuation of service, shortcomings such as in addition, this technology also has the inhomogeneous calcium sulfur ratio that causes of absorbent humidification to increase, and SR is big.
The cyclic semidry process sulfur removal technology does not directly add fresh water (FW) in reactor, but the outer damping of employing reactor contains the combination ash of absorbent, join reactor then, the evaporation of carrying moisture by combination ash reduces flue-gas temperature, thereby the water capacity in the increase flue gas, reach a desulfurization environment of acid-base neutralization preferably, utilize alkali components (the Main Ingredients and Appearance Ca (OH) in the combination ash again
2) absorb the acid contaminant in the flue gas, cause SO
2Transfer in the combination ash Deng gaseous contaminant, so the dust concentration in the flue gas after desulfurization is very high, dust is removed through cleaner, and flue gas after being purified is sent into smoke stack emission by air-introduced machine.
But the cyclic semidry process desulfurization and dedusting technology is owing to need add the combination ash of a large amount of humidifications in reactor, following problem appears in regular meeting: (1) adds combination ash in a large number makes SR significantly improve, and increases operating cost; (2) because the moisture that utilizes combination ash to carry reduces temperature, so mix the wetter of tone, behind the adding reactor phenomenons such as bonding, obstruction and skewness can appear, destroy flue gas flow field, reduce desulfuration efficiency; (3) compare with ammoniacal liquor, the alkalescence of combination ash a little less than, to SO
2Absorption relatively poor, so must a large amount of add circulating ash and absorbent, so that increased the load of back level deduster, strengthen the deduster model, increased investment and operating cost, and easily caused problems such as the not up to standard and desulfuration efficiency of dust concentration is not high; (4) wearing and tearing of reactor and deduster have been quickened in the adding of a large amount of combination ash.
The utility model content
The purpose of this utility model is to provide a kind of alkali lye pre-absorption cyclic semidry process desulfurizer, can effectively solve existing semi-dry desulphurization dedusting technology utilizes combination ash to carry the moisture cooling to cause adding and can occur bonding, obstruction and skewness behind the reactor, destroy flue gas flow field, the problem of reduction desulfuration efficiency etc.
In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions: a kind of alkali lye pre-absorption cyclic semidry process desulfurizer, comprise the U-shaped reactor, be connected the deduster of U-shaped reactor top one end, the ash bucket lower end of described deduster is connected to the input of quality-adjusting device, the input of described quality-adjusting device also is connected with dry powder absorbent storehouse, the top of described quality-adjusting device also is provided with modified alkali lye and adds inlet, the output of described quality-adjusting device links to each other with the U-shaped reactor, the ash bucket lower end of described deduster also is connected with strength and carries the storehouse pump, and the purification smoke outlet of described deduster is connected with chimney by air-introduced machine.
Preferably, described U-shaped reactor comprises the decreasing temperature and increasing humidity pre-absorption portion of vertical setting, the combination ash reaction absorbent portion that vertically is provided with, the bottom of the bottom of described decreasing temperature and increasing humidity pre-absorption portion and combination ash reaction absorbent portion is connected by horizontally disposed flue gas drainage portion, described deduster is connected the top of combination ash reaction absorbent portion, and the output of described quality-adjusting device is connected the bottom of combination ash reaction absorbent portion;
Preferably, the top of described decreasing temperature and increasing humidity pre-absorption portion offers former gas approach, is provided with spray equipment in the decreasing temperature and increasing humidity pre-absorption portion of described former gas approach bottom, and the droplet of described spray equipment ejection is 50～500 μ m;
Preferably, the junction of the junction of decreasing temperature and increasing humidity pre-absorption portion and flue gas drainage portion, flue gas drainage portion and combination ash reaction absorbent portion is provided with some deflectors in the described U-shaped reactor;
Preferably, described combination ash reaction absorbent portion bottom is provided with bleeder valve;
Preferably, described deduster and combination ash reaction absorbent portion junction is provided with some deflectors;
Preferably, the ash bucket lower end of described deduster is connected the input of quality-adjusting device by the circulating ash batcher that has meter;
Preferably, the input of described quality-adjusting device connects dry powder absorbent storehouse by the dry powder charger of band meter;
Preferably, the combination ash of described quality-adjusting device and U-shaped reactor reaction absorbent portion junction is provided with stock guide;
Compared with prior art, the utility model has the advantages that: utilize the U-shaped reactor, separating in order of spray equipment and combination ash reaction absorption plant, realized the decreasing temperature and increasing humidity of high-temperature flue gas, reduced the ratio resistance of dust, improved the desulfurization environment, reduce the addition of back dry powder absorbent, reduced the pressure loss and the equipment attrition of system, solved the sticking wall fouling difficult problem of spray nozzle clogging and combination ash, optimize flue gas flow field and combination ash flow field, improved desulfuration efficiency.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
Consult the embodiment of Fig. 1 for a kind of alkali lye pre-absorption of the utility model cyclic semidry process desulfurizer, a kind of alkali lye pre-absorption cyclic semidry process desulfurizer, comprise U-shaped reactor 1, be connected the deduster 10 of U-shaped reactor 1 top one end, the ash bucket lower end of described deduster 10 is connected to the input of quality-adjusting device 12, the input of described quality-adjusting device 12 also is connected with dry powder absorbent storehouse 13, the top of described quality-adjusting device 12 also is provided with modified alkali lye and adds inlet 15, the output of described quality-adjusting device 12 links to each other with U-shaped reactor 1, the ash bucket lower end of described deduster 10 also is connected with strength and carries storehouse pump 17, the purification smoke outlet of described deduster 10 is connected with chimney 19 by air-introduced machine 18, described U-shaped reactor 1 comprises the decreasing temperature and increasing humidity pre-absorption portion 2 of vertical setting, the combination ash reaction absorbent portion 4 that vertically is provided with, the bottom of the bottom of described decreasing temperature and increasing humidity pre-absorption portion 2 and combination ash reaction absorbent portion 4 is connected by horizontally disposed flue gas drainage portion 3, described deduster 10 is connected the top of combination ash reaction absorbent portion 4, the output of described quality-adjusting device 12 is connected the bottom of combination ash reaction absorbent portion 4, the top of described decreasing temperature and increasing humidity pre-absorption portion 2 offers former gas approach 5, be provided with spray equipment 6 in the decreasing temperature and increasing humidity pre-absorption portion 2 of described former gas approach 5 bottoms, the droplet of described spray equipment 6 ejections is 50～500 μ m, the junction of decreasing temperature and increasing humidity pre-absorption portion 2 and flue gas drainage portion 3 in the described U-shaped reactor 1, flue gas drainage portion 3 is provided with some deflectors 7 with the junction of combination ash reaction absorbent portion 4, described combination ash reaction absorbent portion 4 bottoms are provided with bleeder valve 8, described deduster 10 is provided with some deflectors 7 with combination ash reaction absorbent portion 4 junctions, the ash bucket lower end passband of described deduster 10 has the circulating ash batcher 11 of meter to be connected the input of quality-adjusting device 12, the input of described quality-adjusting device 12 connects dry powder absorbent storehouse 13 by the dry powder charger 14 of band meter, and described quality-adjusting device 12 is provided with stock guide 16 with combination ash reaction absorbent portion 4 junctions of U-shaped reactor 1.
Contain SO
2Concentration is 500～10000mg/Nm
3Temperature is 130～160 ℃ a boiler smoke, enter the decreasing temperature and increasing humidity pre-absorption portion 2 of U-shaped reactor 1 by the former gas approach 5 of apparatus of the present invention, head-on with the deposed ammonia of spray upwards or other alkaline waste water is reverse contacts, flue-gas temperature is reduced to 80～100 ℃ rapidly, and waste water is vaporizated into water vapour rapidly, realized the decreasing temperature and increasing humidity of flue gas, simultaneously, during the ammonia in the deposed ammonia and acidic gas in flue gas take place and absorption reaction generate ammonium salt, ammonium salt is dissolved or be adsorbed in the drop of water vapour.In decreasing temperature and increasing humidity pre-absorption portion 2, flue gas has obtained the modified of decreasing temperature and increasing humidity, the desulfurization environment is improved, flue gas after modified enters into combination ash reaction absorbent portion 4 naturally through the deflector 7 in the flue gas drainage portion 3, flue gas and half-dried circulating ash are carried out heat exchange, the circulating ash surface moisture is evaporated, flue-gas temperature further reduces, drop to 60～80 ℃, the mixed ash of ammonium salt in the flue gas and acid contaminant absorbs or absorption simultaneously, pollutant has been transferred to solid phase from gas phase or liquid phase, flue gas carries a large amount of dust and enters deduster 10 by reactor outlet deflector 7, dust obtains capturing, and flue gas is purified, and flue gas after being purified is discharged by chimney 19 by air-introduced machine 18.
The dust part that deduster 10 captures is sent into quality-adjusting device by the circulating ash batcher 11 that function of measuring is arranged, dry powder charger 14 also joins the dry powder absorbent in the dry powder absorbent storehouse 13 in the quality-adjusting device simultaneously, in quality-adjusting device, circulating ash, dry powder absorbent and add inlet 15 deposed ammonias of coming in by modified alkali lye and be mixed together modified, the combination ash that combination ash after modified is sent into U-shaped reactor 1 by deflector 7 is reacted absorbent portion 4, the acidic materials reaction in continuation and the flue gas.Remaining ash is then carried storehouse pump 17 dischargers by strength in the ash bucket of deduster 10.
The above only is a specific embodiment of the utility model, but technical characterictic of the present utility model is not limited thereto, any those skilled in the art is in field of the present utility model, and variation of being done or modification all are encompassed among the claim of the present utility model.
Claims (9)
1. alkali lye pre-absorption cyclic semidry process desulfurizer, it is characterized in that: comprise U-shaped reactor (1), be connected the deduster (10) of U-shaped reactor (1) top one end, the ash bucket lower end of described deduster (10) is connected to the input of quality-adjusting device (12), the input of described quality-adjusting device (12) also is connected with dry powder absorbent storehouse (13), the top of described quality-adjusting device (12) also is provided with modified alkali lye and adds inlet (15), the output of described quality-adjusting device (12) links to each other with U-shaped reactor (1), the ash bucket lower end of described deduster (10) also is connected with strength and carries storehouse pump (17), and the purification smoke outlet of described deduster (10) is connected with chimney (19) by air-introduced machine (18).
2. a kind of alkali lye pre-absorption cyclic semidry process desulfurizer as claimed in claim 1, it is characterized in that: described U-shaped reactor (1) comprises the decreasing temperature and increasing humidity pre-absorption portion (2) of vertical setting, the combination ash reaction absorbent portion (4) that vertically is provided with, the bottom of described decreasing temperature and increasing humidity pre-absorption portion (2) is connected by horizontally disposed flue gas drainage portion (3) with the bottom of combination ash reaction absorbent portion (4), described deduster (10) is connected the top of combination ash reaction absorbent portion (4), and the output of described quality-adjusting device (12) is connected the bottom of combination ash reaction absorbent portion (4).
3. a kind of alkali lye pre-absorption cyclic semidry process desulfurizer as claimed in claim 2, it is characterized in that: the top of described decreasing temperature and increasing humidity pre-absorption portion (2) offers former gas approach (5), be provided with spray equipment (6) in the decreasing temperature and increasing humidity pre-absorption portion (2) of described former gas approach (5) bottom, the droplet of described spray equipment (6) ejection is 50～500 μ m.
4. a kind of alkali lye pre-absorption cyclic semidry process desulfurizer as claimed in claim 2 is characterized in that: described U-shaped reactor (1) interior decreasing temperature and increasing humidity pre-absorption portion (2) and junction, the flue gas drainage portion (3) of flue gas drainage portion (3) are provided with some deflectors (7) with the junction of combination ash reaction absorbent portion (4).
5. a kind of alkali lye pre-absorption cyclic semidry process desulfurizer as claimed in claim 2 is characterized in that: described combination ash reaction absorbent portion (4) bottom is provided with bleeder valve (8).
6. a kind of alkali lye pre-absorption cyclic semidry process desulfurizer as claimed in claim 2 is characterized in that: described deduster (10) is provided with some deflectors (7) with combination ash reaction absorbent portion (4) junction.
7. a kind of alkali lye pre-absorption cyclic semidry process desulfurizer as claimed in claim 1 is characterized in that: the ash bucket lower end passband of described deduster (10) has the circulating ash batcher (11) of meter to be connected the input of quality-adjusting device (12).
8. a kind of alkali lye pre-absorption cyclic semidry process desulfurizer as claimed in claim 1 is characterized in that: the input of described quality-adjusting device (12) connects dry powder absorbent storehouse (13) by the dry powder charger (14) of band meter.
9. a kind of alkali lye pre-absorption cyclic semidry process desulfurizer as claimed in claim 1 is characterized in that: described quality-adjusting device (12) is provided with stock guide (16) with combination ash reaction absorbent portion (4) junction of U-shaped reactor (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201989275U CN201578987U (en) | 2009-10-26 | 2009-10-26 | Alkaline liquid pre-absorption circulating half-dry desulphurization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201989275U CN201578987U (en) | 2009-10-26 | 2009-10-26 | Alkaline liquid pre-absorption circulating half-dry desulphurization device |
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| Publication Number | Publication Date |
|---|---|
| CN201578987U true CN201578987U (en) | 2010-09-15 |
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| CN2009201989275U Expired - Lifetime CN201578987U (en) | 2009-10-26 | 2009-10-26 | Alkaline liquid pre-absorption circulating half-dry desulphurization device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102824825A (en) * | 2012-09-12 | 2012-12-19 | 无锡光初科技服务有限公司 | Multi-effect U-shaped tube type dedusting and desulfurization integrated device of coal-fired boiler and dedusting and desulfurization method thereof |
| CN108097031A (en) * | 2018-01-16 | 2018-06-01 | 斐控环境工程（上海）有限公司 | A kind of flow-guiding type retort |
| CN108671715A (en) * | 2018-05-11 | 2018-10-19 | 南京师范大学 | A kind of coal-fired flue-gas sulfur trioxide removing means and its application method and application |
| CN110368799A (en) * | 2019-07-30 | 2019-10-25 | 福建龙净脱硫脱硝工程有限公司 | A kind of semidry process desulfurizer and method |
-
2009
- 2009-10-26 CN CN2009201989275U patent/CN201578987U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102824825A (en) * | 2012-09-12 | 2012-12-19 | 无锡光初科技服务有限公司 | Multi-effect U-shaped tube type dedusting and desulfurization integrated device of coal-fired boiler and dedusting and desulfurization method thereof |
| CN102824825B (en) * | 2012-09-12 | 2014-10-29 | 无锡光初科技服务有限公司 | Multi-effect U-shaped tube type dedusting and desulfurization integrated device of coal-fired boiler and dedusting and desulfurization method thereof |
| CN108097031A (en) * | 2018-01-16 | 2018-06-01 | 斐控环境工程（上海）有限公司 | A kind of flow-guiding type retort |
| CN108671715A (en) * | 2018-05-11 | 2018-10-19 | 南京师范大学 | A kind of coal-fired flue-gas sulfur trioxide removing means and its application method and application |
| CN110368799A (en) * | 2019-07-30 | 2019-10-25 | 福建龙净脱硫脱硝工程有限公司 | A kind of semidry process desulfurizer and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Zhejiang Feida Desulfuration Engineering Co., Ltd. Assignor: Zhejiang Feida Environmental Science & Technology Co., Ltd. Contract record no.: 2011330001030 Denomination of utility model: Alkaline liquid pre-absorption circulating half-dry desulphurization device Granted publication date: 20100915 License type: Exclusive License Record date: 20110729 |
|
| CX01 | Expiry of patent term |
Granted publication date: 20100915 |
|
| CX01 | Expiry of patent term |