CN1380129A - High-effective desulfurizing and dust-removing method for flue gas and its used mixer - Google Patents
High-effective desulfurizing and dust-removing method for flue gas and its used mixer Download PDFInfo
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- CN1380129A CN1380129A CN 01107334 CN01107334A CN1380129A CN 1380129 A CN1380129 A CN 1380129A CN 01107334 CN01107334 CN 01107334 CN 01107334 A CN01107334 A CN 01107334A CN 1380129 A CN1380129 A CN 1380129A
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Abstract
The present invention relates to a high-effective flue gas desulfurization and dust-removing method and its used mixer. Said equipment includes absorbing agent preparation and converying system, flue gas cleaning system and ash water processing and recovery and utilization system, and is characterized by that the absorbing agent discharged from absorbing agent preparation and conveying system can be fed into a mixer, and can be mixed with steam or compressed air fed into the mixer, then sprayed into main tower of flue gas clenaing system via nozzle. Said invention can increase the contact area of absorbing agent and flue gas, and can raise the desulfurization and dust-removing effect, can be applicable to various coal-fired boilers and kiln furnaces.
Description
The present invention relates to the FGD dust collection method of coal-burning boiler, kiln.
The desulfurization and dedusting of flue gas mainly is sulfur dioxide, the flue dust of control coal-burning boiler, kiln discharging, reduces the pollution to atmosphere.And the desulfurization of flue gas is to reduce the difficult point of polluting.At present, domestic and international industrialized desulfurization and dedusting technology mainly contains dry method and wet method two classes.Wherein, drop into the industry operation based on wet method.Its desulfurization principle all is by the contacting of flue gas and akaline liquid, with in and sulfur in smoke.These class methods for improving desulfuration efficiency, need to use a large amount of alkaline waters because the alkaline water utilization rate is low.It is big to exist the alkaline matter consumption, and water consumption is big, the problem that the water treatment expense is high.Make the operating cost height, and desulfuration efficiency is unsatisfactory.
The objective of the invention is to: a kind of new high-efficiency flue gas desulfurization dust collection method is provided, this method desulfuration efficiency height, operating cost is low.It is the akaline liquid that desulfurization is used, and with after steam that feeds or compressed air mix, forms vaporific alkaline gas in a blender, directly spray in the king-tower then, reaches this purpose.
The present invention is achieved in that a kind of high-efficiency flue gas desulfurization dust collection method, and the device that it uses comprises absorbent preparation and induction system, flue gas purification system, grey water treatment, recycling system; It is characterized in that: the absorbent that absorbent preparation and induction system transfer out is delivered to a blender (4), and absorbent is with after the steam of sending into blender (4) or compressed air mix, and is direct in nozzle is the vaporific king-tower that sprays into flue gas purification system.
In the above-mentioned high-efficiency flue gas desulfurization dust collection method, described steam or the compressed air of sending into blender (4) is that pressure is 2～7 atmospheric steam or compressed air.
The blender that aforementioned high-efficiency flue gas desulfurization dust collection method is used, it is by cylindrical shell (17) and outside the constituting around cavity (18) of cylindrical shell (17); One end of cylindrical shell (17) joins with steam or compressed air appendix, and the other end and nozzle join, and offers through hole (19) on the barrel around the corresponding cylindrical shell (17) of cavity (18).
Compared with the prior art, the akaline liquid that the present invention uses desulfurization is the vaporific king-tower that directly sprays into after compressed steam or air mix, and makes the contact area of absorbent and flue gas increase, when having reduced absorbent and water consumption, improved the desulfurization and dedusting effect.Have the desulfurization dust-removing efficiency height, desulfurized effect is stable, the characteristics that operating cost is low.Can be applicable to various coal-burning boilers, kiln etc. and need to handle the occasion of discharging flue gas.
Below in conjunction with accompanying drawing the present invention is described in further detail.
Accompanying drawing 1 is a process chart of the present invention;
Accompanying drawing 2 is structural representations of the used blender of the present invention;
Accompanying drawing 3 is that the A--A of accompanying drawing 2 is to view.
Embodiment: equipment therefor and process route and prior art are basic identical during the invention process.Device comprises absorbent preparation and induction system, flue gas purification system, grey water treatment, recycling system.The absorbent that different absorbent preparations and induction system transfer out is not to deliver to circulating water pool, but deliver to a blender 4, absorbent is with after the steam of sending into blender 4 or compressed air mix, directly in nozzle is the vaporific king-tower that sprays into flue gas purification system.In this example, absorbent preparation and induction system comprise change stock tank 1, lime stock tank 2, mixer 16, stock pump 13, conveyance conduit, blender 4 and the steam feed track among Fig. 1; Flue gas purification system comprises Venturi scrubber 5, flue gas inlet tube (between boiler 3 and Venturi scrubber 5), king-tower 6, secondary tower 7, air-introduced machine 8, chimney 9; Ash water treatment, recycling system comprise buck storage pond 12, slag stock pump 15, filter press 11, clear water reserviors 10, circulating pump 14.Send into the cavity 18 of blender 4 through conveyance conduit by the limewash after stock pump 13 superchargings (being absorbent), the through hole of offering on the barrel of the cylindrical shell 17 of blender 4 19 enters cylindrical shell 17 again, after the steam of sending into cylindrical shell 17 (pressure is 2.5 atmospheric pressure) mixes, form and directly spray into king-tower 6 after vaporific.The effect of blender 4 is by absorbent and vapor mixing with liquid state, and absorbent is converted into the mist attitude from liquid state.Vaporific absorbent with king-tower sulfur in smoke, flue dust contact process in, form great contact surface, can make the neutralization reaction of absorbent and sulfur dioxide more abundant, and improve the dust removing effects of sulfur district.Desulfuration efficiency of the present invention is high, can surpass 90%; And the absorbent consumption is few, and desulfurized effect is stable.
Main points of the present invention are that absorbent is converted into the mist attitude from liquid state, directly spray into then king-tower. Cause This makes absorbent preparation and the induction system that can directly export vaporific absorbent, and is then direct Spray into king-tower, should be considered as is simple replacement to the inventive method.
Claims (3)
1, a kind of high-efficiency flue gas desulfurization dust collection method, the device that it uses comprise absorbent preparation and induction system, flue gas purification system, grey water treatment, recycling system; It is characterized in that: the absorbent that absorbent preparation and induction system transfer out is delivered to a blender (4), and absorbent is with after the steam of sending into blender (4) or compressed air mix, and is direct in nozzle is the vaporific king-tower that sprays into flue gas purification system.
2, high-efficiency flue gas desulfurization dust collection method according to claim 1 is characterized in that: described steam or the compressed air of sending into blender (4) is that pressure is 2～7 atmospheric steam or compressed air.
3, the blender used of high-efficiency flue gas desulfurization dust collection method according to claim 1 and 2 is characterized in that: it is by cylindrical shell (17) and outside the constituting around cavity (18) of cylindrical shell (17); One end of cylindrical shell (17) joins with steam or compressed air appendix, and the other end and nozzle join, and offers through hole (19) on the barrel around the corresponding cylindrical shell (17) of cavity (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01107334 CN1380129A (en) | 2001-04-06 | 2001-04-06 | High-effective desulfurizing and dust-removing method for flue gas and its used mixer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01107334 CN1380129A (en) | 2001-04-06 | 2001-04-06 | High-effective desulfurizing and dust-removing method for flue gas and its used mixer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1380129A true CN1380129A (en) | 2002-11-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01107334 Pending CN1380129A (en) | 2001-04-06 | 2001-04-06 | High-effective desulfurizing and dust-removing method for flue gas and its used mixer |
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| CN (1) | CN1380129A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107441849A (en) * | 2017-08-29 | 2017-12-08 | 太仓市除尘设备厂 | A kind of flue gas and water mixing heat recovering process |
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2001
- 2001-04-06 CN CN 01107334 patent/CN1380129A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107441849A (en) * | 2017-08-29 | 2017-12-08 | 太仓市除尘设备厂 | A kind of flue gas and water mixing heat recovering process |
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