CN101874973A - Boiler flue gas desulfurization device with conical tower bottom - Google Patents
Boiler flue gas desulfurization device with conical tower bottom Download PDFInfo
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- CN101874973A CN101874973A CN 201010210129 CN201010210129A CN101874973A CN 101874973 A CN101874973 A CN 101874973A CN 201010210129 CN201010210129 CN 201010210129 CN 201010210129 A CN201010210129 A CN 201010210129A CN 101874973 A CN101874973 A CN 101874973A
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- flue gas
- tower
- storage tank
- liquid storage
- desulfurization device
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Abstract
The invention relates to a boiler flue gas desulfurization device with a conical tower bottom, and belongs to the technical field of environmental protection. The desulfurization device has a tower shape; the inside of the tower body is provided with a defroster and a spraying layer from top to bottom; the lower part in the tower body is provided with a liquid storage tank; the wall of the tower body between the spraying layer and the liquid storage tank is provided with a flue gas inlet; and an upper aerator pipe and a lower aerator pipe are arranged in the liquid storage tank. The boiler flue gas desulfurization device with the conical tower bottom has the advantages that: the tower bottom is conical, and a system generating disturbance in the conventional structure is eliminated, so the wear of a circulating pump is reduced. In the absorbing process, after slurry is saturated, (NH4)2SO4 crystals are continuously separated out, and generated particles suspending in the absorption liquid are grown continuously; and when the particles are grown to a certain degree, the particles are settled to the cone and are delivered to a cyclone through an extraction pump, so large solid particles are not positioned at the inlet of the circulating pump and the wear of the circulating pump is reduced.
Description
Technical field
The present invention relates at the bottom of a kind of tower is the boiler flue gas desulfurization device of taper, belongs to environmental protection technical field.
Background technology
Ammonia process of desulfurization major part is to continue to use sulfur removal technologies such as calcium method, magnesium method at present, only considers desulfurization, does not consider rate of recovery problem, and therefore, the ammonia recovery problem all fails thoroughly to solve.If ammonia recovery and product (NH
4)
2SO
4The rate of recovery reaches more than 98%, and the ammonia process of desulfurization is exactly present best sulfur removal technology.
Though ammonia process and calcium method, magnesium method all are the wet desulfurizing process of acid-base neutralization, ammonia process and calcium method, magnesium method are that there is a big difference.The solubility of the product ammonium sulfate of the ammonia process of desulfurization is very big, and in the time of 60 ℃, solubility is 84g/100gH
2Therefore O can not outwards discharge recovery liquid, and will control systematic water balance well, otherwise can have a strong impact on the rate of recovery.And the desulfurization of calcium method is because CaSO
4Solubility very little, do not need the water balance of strict control system, also can obtain product, and products C aSO
4Value low, so product recovery rate is not very important.
Summary of the invention
The objective of the invention is to propose at the bottom of a kind of tower is the boiler flue gas desulfurization device of taper, changes the structure of existing boiler flue gas desulfurization device, with the rate of recovery of useful products in the raising boiler smoke, and reduces the pollution of boiler smoke to environment.
The boiler flue gas desulfurization device that at the bottom of the tower that the present invention proposes is taper is a turriform, is provided with demister and spraying layer from top to bottom successively from cat head in the tower body, and the bottom is a liquid storage tank in the tower body; Tower body wall between described spraying layer and the liquid storage tank is provided with smoke inlet; Be provided with aeration tube and following aeration tube in the liquid storage tank.
At the bottom of the tower that the present invention proposes is the boiler flue gas desulfurization device of taper, and its advantage is to adopt taper at the bottom of tower, has cancelled the system that produces disturbance in the existing structure, has therefore reduced the wearing and tearing of circulating pump.In absorption process, after slurries are saturated, (NH
4)
2SO
4Crystallization is constantly separated out, and the particle of generation is suspended in the absorption liquid also constantly grows up, and grows up to a certain degree when particle, just is deposited to the tapering, sends into cyclone through excavationg pump, so the not big solid particle in pump entry place, thereby has reduced the wearing and tearing of circulating pump.
Description of drawings
Fig. 1 is to be the structural representation of the boiler flue gas desulfurization device of taper at the bottom of the tower that proposes of the present invention.
Among Fig. 1, the 1st, cat head, the 2nd, demister, the 3rd, spraying layer, the 4th, smoke inlet, the 5th, last aeration tube, the 6th, following aeration tube, the 7th, taphole, the 8th, liquid storage tank.Arrow is the flue gas traffic direction among the figure.
The specific embodiment
At the bottom of the tower that the present invention proposes be taper boiler flue gas desulfurization device structure as shown in Figure 1, this desulfurizer is a turriform, is provided with demister 2 and spraying layer 3 from top to bottom successively from cat head 1 in the tower body, the bottom is a liquid storage tank 8 in the tower body.Tower body wall between spraying layer 3 and the liquid storage tank 8 is provided with smoke inlet 4.Be provided with aeration tube 5 and following aeration tube 6 in the liquid storage tank 8.
Introduce the operation principle and the course of work of desulfurizer of the present invention in detail below in conjunction with accompanying drawing:
The flue gas that boiler induced-draft fan (or desulfurization booster fan) comes, after being cooled to about 100 ℃, heat exchange enters desulfurizing tower from smoke inlet 4, and three layers of spray in spraying layer 3 from the bottom to top, the ammoniacal liquor and the sulfur in smoke that spray in the shower nozzle of spraying layer react, and generate ammonium sulfite.Flue gas after the desulfurization through demister 2 demists after cat head 1 enters smoke stack emission.The spraying layer below absorbs the ammonium sulfite that forms and be oxidized to ammonium sulfate in the liquid storage tank of bottom, absorption tower.
Taper is adopted in the bottom of the liquid storage tank 8 at the bottom of the flue gas desulfurization Tata of the present invention, and has cancelled the perturbed system in the existing desulfurizing tower, but has set up aeration tube 5 and following aeration tube 6 in liquid storage tank 8, to strengthen the oxidation reaction that sulfite oxidation becomes ammonium sulfate.After solution is saturated, (the NH in the solution
4)
2SO
4Crystallization is constantly separated out, and the particle of generation is suspended in the absorption liquid also constantly grows up, and grows up to a certain degree when particle, just is deposited to the tapering, sends through excavationg pump.Ammonia spray liquor in the spraying layer 3 is by the effect of circulating pump, constantly circulates with solution in the liquid storage tank 8, because the bulky grain in the solution has been deposited to the tapering, reduced the wearing and tearing of circulating pump.In absorption process,, so the not big solid particle in pump entry place, make the also not big solid particle in porch of circulating pump, thereby reduced the wearing and tearing of circulating pump.
In one embodiment of the present of invention, the used fog that removes is developed limited formula production by Beijing epoch safe section purification techniques.The product that also can use Wuhan Keep-Hope Environmental Protection Co., Ltd. to produce.
Claims (1)
1. be the boiler flue gas desulfurization device of taper at the bottom of the tower, it is characterized in that this desulfurizer is a turriform, is provided with demister and spraying layer from top to bottom successively from cat head in the tower body, the bottom is a liquid storage tank in the tower body; Tower body wall between described spraying layer and the liquid storage tank is provided with smoke inlet; Be provided with aeration tube and following aeration tube in the liquid storage tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010210129 CN101874973A (en) | 2010-06-25 | 2010-06-25 | Boiler flue gas desulfurization device with conical tower bottom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010210129 CN101874973A (en) | 2010-06-25 | 2010-06-25 | Boiler flue gas desulfurization device with conical tower bottom |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101874973A true CN101874973A (en) | 2010-11-03 |
Family
ID=43017716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010210129 Pending CN101874973A (en) | 2010-06-25 | 2010-06-25 | Boiler flue gas desulfurization device with conical tower bottom |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101874973A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104014235A (en) * | 2014-05-29 | 2014-09-03 | 苏州市金翔钛设备有限公司 | Waste-gas processing apparatus |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101428196A (en) * | 2008-11-28 | 2009-05-13 | 北京中大能环工程技术有限公司 | In-hollow column intercrystalline ammonia process of desulfurization, recovery system and method thereof |
| CN101579602A (en) * | 2009-06-12 | 2009-11-18 | 山西晋丰环保工程设计有限公司 | Energy-saving and high-quality ammonia desulphurization process for ammonia sulfate recovery |
| CN201380033Y (en) * | 2009-02-01 | 2010-01-13 | 中冶集团北京冶金设备研究设计总院 | Spraying type tower for flue gas desulfurization and absorption by magnesium |
| CN201744295U (en) * | 2010-06-25 | 2011-02-16 | 北京紫光威肯环保工程技术有限公司 | Boiler flue gas desulfurizer with conical tower bottom |
-
2010
- 2010-06-25 CN CN 201010210129 patent/CN101874973A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101428196A (en) * | 2008-11-28 | 2009-05-13 | 北京中大能环工程技术有限公司 | In-hollow column intercrystalline ammonia process of desulfurization, recovery system and method thereof |
| CN201380033Y (en) * | 2009-02-01 | 2010-01-13 | 中冶集团北京冶金设备研究设计总院 | Spraying type tower for flue gas desulfurization and absorption by magnesium |
| CN101579602A (en) * | 2009-06-12 | 2009-11-18 | 山西晋丰环保工程设计有限公司 | Energy-saving and high-quality ammonia desulphurization process for ammonia sulfate recovery |
| CN201744295U (en) * | 2010-06-25 | 2011-02-16 | 北京紫光威肯环保工程技术有限公司 | Boiler flue gas desulfurizer with conical tower bottom |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104014235A (en) * | 2014-05-29 | 2014-09-03 | 苏州市金翔钛设备有限公司 | Waste-gas processing apparatus |
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Application publication date: 20101103 |