CN201304317Y - Oxidation air feeder of wet-method flue gas desulfurization absorption-tower - Google Patents
Oxidation air feeder of wet-method flue gas desulfurization absorption-tower Download PDFInfo
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- CN201304317Y CN201304317Y CNU2008201543414U CN200820154341U CN201304317Y CN 201304317 Y CN201304317 Y CN 201304317Y CN U2008201543414 U CNU2008201543414 U CN U2008201543414U CN 200820154341 U CN200820154341 U CN 200820154341U CN 201304317 Y CN201304317 Y CN 201304317Y
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- oxidation air
- oxidation
- absorption tower
- flue gas
- gas desulfurization
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Abstract
The utility model discloses an oxidation air feeder of a wet-method flue gas desulfurization absorption-tower, which comprises a plurality of ejection guns arranged inside the absorption-tower. A lateral feeding-type stirrer is arranged aside each ejection gun; an ejector nozzle of each ejection gun is formed downwards, and each ejection gun also comprises an annular oxidation air tube, an oxidation air supplying-tube and an oxidation blower which are arranged at the middle part of the absorption-tower; each ejection gun and the annular oxidation air tube are communicated with the oxidation air supplying-tube; the oxidation air supplying-tube is connected with the oxidation blower; a plurality of nozzles which are distributed evenly are arranged on the annular oxidation air tube; and the nozzles are arranged downwards. The oxidation air feeder of the wet-method flue gas desulfurization absorption-tower enhances the oxidation of a serous fluid at the middle part of the absorption-tower, improves the quality of plaster subsidiary-products, and achieve the functions of enhancing the perturbation motion of the serous fluid at the middle part of the absorption-tower and preventing part of plasters from depositing at the same time.
Description
Technical field
The utility model relates to a kind of wet flue gas desulfurization absorption tower, particularly a kind of oxidation air feedway of limestone-gypsum wet flue gas desulfurization absorption tower.
Background technology
Limestone-gypsum method is present main flume sulfur removal technology, and occupation rate of market is more than 80%; Limestone-gypsum method can be divided into again and suppress oxidation technology and forced oxidation technology, and the two all adopts lime stone as desulfurization absorbent, and different is that the former suppresses absorption reaction product C aSO
3Oxidation, the latter blasts oxidation air with CaSO in the slurries pond in desulphurization reaction
3Forced oxidation becomes gypsum (CaSO
42H
2O) recycled; The desulfurizing byproduct of inhibition oxidation technology is generally abandoned and is made landfill disposal, and the gypsum that forced oxidation technology produces then can fully utilize.Therefore, under the situation of advocating comprehensive utilization of resources, circular economy concept energetically, forced oxidation technology has become the absolute main flow of limestone-gypsum method flue gas desulfurization technology.
Total chemical equation of wet type limestone-gypsum method flue gas desulfurization forced oxidation technology is:
In forced oxidation type wet flue gas desulfurization absorption tower, the supply mode of oxidation air directly influences the stable and desulfurization dust-removing efficiency of utilization ratio, system of oxidation air, the bad grade that can influence the gypsum accessory substance of oxidation air distribution effect, worsen the effect of absorption reaction, can cause taking place in the tower fouling and obstruction when serious, therefore at the form on absorption tower, being provided with of rational oxidation air feedway is most important.Common oxidation air feedway mainly contains two kinds: (1) torch-type oxidation air feedway, as shown in Figure 1, be provided with a plurality of side-feeding type slurry mixers 300 in the absorption tower 100, be provided with a spray gun 200 before each side-feeding type slurry mixer 300, spray gun 200 is ejected into oxidation air in the place ahead of side-feeding type slurry mixer 300 rotary blades, utilize the agitator paddle rotational kinetic energy that oxidation air bubble is smashed, and then be evenly distributed in the absorption slurries in the absorption tower 100; (2) ductwork type oxidation air feedway, as shown in Figure 2, be provided with slurry mixer 130 in the absorption tower 110, slurry mixer 130 tops are provided with ductwork type oxidation air nozzle 120, the ductwork type oxidation air nozzle 120 that utilization is distributed in the slurries blasts oxidation air in the slurries, characteristics are that the oxidation air nozzle evenly distributes in the slurries pond, directly oxidation air evenly is transported in the absorption slurries, oxidation air nozzle 120 generally is arranged in the absorption tower reaction zone of the following 3～6m degree of depth of slurries face.
Above-mentioned two kinds of oxidation air supply modes respectively have pluses and minuses, are generally selected for use according to the characteristics and the operating cost on absorption tower.Usually torch-type oxidation air feedway is adopted on the fountain absorption tower, and ductwork type oxidation air feedway is adopted on JBR formula absorption tower.Entered since 21 century, along with the progressively raising of absorption tower agitator performance, torch-type oxidation air supply mode has obtained extensive use because form is simple relatively.Along with the development of limestone-gypsum wet process of FGD technology, single tower smoke treatment amount is increasing, and the absorption tower diameter is also increasing.For the desulfuration absorbing tower more than the diameter 20m, usually need 1～4 root post to be set in tower central authorities, general 500～the 800mm of column diameter, when adopting side-feeding mixer, because the interference of column, the poor slightly gypsum that causes easily of the slurries disturbance effect of absorption tower central authorities is piled up, and torch-type oxidation air supply mode may form the dead band in slurries pond central authorities, in this zone the oxidation air time of staying shorter, the slurries oxidation effectiveness is poor.And ductwork type oxidation air supply mode, in slurries pond, whole absorption tower, evenly arrange, form is comparatively complicated, its maintenance and maintenance difficulties are bigger, and the oxidation air pipeline is longer, and resistance loss of pipeline is bigger, the oxidation fan energy consumption is higher, the pressure that is assigned to each oxidation air nozzle is less, and the oxidation air pipeline is thinner, and local the obstruction taken place easily.In case the local obstruction of nozzle takes place, directly influence the quality of gypsum accessory substance, also need spend great amount of manpower and material resources and clear up.
Summary of the invention
For addressing the above problem, the utility model provides a kind of oxidation air feedway of wet flue gas desulfurization absorption tower, avoids absorption tower central authorities " dead band " to occur stirring, improves the quality of desulfurizing byproduct gypsum and prevents to take place in the absorption tower fouling or stopping state.
For achieving the above object, the oxidation air feedway of wet flue gas desulfurization absorption tower of the present utility model, comprise that a plurality of spray gun, each described spray gun next door that are arranged in the absorption tower are provided with side-feeding mixer, the spout of described spray gun is directed downwards, and it also comprises annular oxidation air pipe, oxidation air supply pipe and the oxidation fan that is arranged on absorption tower central authorities; The described oxidation air supply pipe of described spray gun and annular oxidation air Guan Junyu is communicated with; Described oxidation air supply pipe links to each other with described oxidation fan; Described annular oxidation air pipe is provided with a plurality of equally distributed nozzles, and described nozzle is directed downwards.
Be provided with the cooling water nozzle in the described oxidation air supply pipe.
Described oxidation fan adopts Roots blower.
Nozzle on the described annular oxidation air pipe adopts the SiC material to make.
The inlet of described annular oxidation air pipe is provided with the flow control valve that can regulate the oxidation air flow.
Nozzle on described spray gun and the annular oxidation air pipe is alternating expression and arranges.
The oxidation air feedway of wet flue gas desulfurization absorption tower of the present utility model has been strengthened the slurries oxidation at middle part, absorption tower, has improved the quality of gypsum accessory substance, has played the effect of strengthening the slurries disturbance of absorption tower central authorities, preventing local gypsum deposition simultaneously.
Description of drawings
Fig. 1 is the schematic diagram of torch-type oxidation air feedway on the absorption tower of prior art;
Fig. 2 is the schematic diagram of ductwork type oxidation air feedway on the absorption tower of prior art;
Fig. 3 is the schematic diagram of the oxidation air feedway of wet flue gas desulfurization absorption tower of the present utility model;
Fig. 4 is the schematic top plan view of the oxidation air feedway of wet flue gas desulfurization absorption tower of the present utility model.
The specific embodiment
Fig. 3 is the schematic diagram of the oxidation air feedway of wet flue gas desulfurization absorption tower of the present utility model; Fig. 4 is the schematic top plan view of the oxidation air feedway of wet flue gas desulfurization absorption tower of the present utility model.As shown in the figure, the oxidation air feedway of wet flue gas desulfurization absorption tower of the present utility model comprises that a plurality of spray gun 20, each spray gun 20 next door that are arranged in the absorption tower 10 are provided with side-feeding mixer 30, and the spout of described spray gun 20 is directed downwards.Utilize the rotation function of side-feeding mixer impeller, with oxidation air spray gun 20 at a high speed the oxidation air bubble of ejection smash, and then, play main slurries oxidation along with slurries are mobile and be transported to the absorption tower everywhere absorption tower 10 in.
The oxidation air feedway of wet flue gas desulfurization absorption tower of the present utility model also comprises: the annular oxidation air pipe 40, oxidation air supply pipe 50 and the oxidation fan 60 that are arranged on absorption tower 10 central authorities; Spray gun 20 and annular oxidation air pipe 40 all are communicated with oxidation air supply pipe 50, and described oxidation air supply pipe 50 links to each other with oxidation fan 60; Described annular oxidation air pipe 40 is provided with a plurality of equally distributed nozzles 41, and described nozzle is directed downwards.Utilize the kinetic energy of oxidation fan 60 that oxidation air is sprayed into the slurries on absorption tower 10 from the spray gun 20 in agitator 30 the place aheads and the nozzle 41 on the annular oxidation air pipe 40.The setting of annular oxidation air pipe 40 can be strengthened the slurries oxidation effectiveness of absorption tower 10 central authorities, can strengthen the effect of tower middle section slurries disturbance simultaneously, and annular oxidation air pipe 40 shapes can be circle or similar round.The inlet of annular oxidation air pipe 40 is provided with the flow control valve that can regulate the oxidation air flow.The nozzle 41 of annular oxidation air pipe 40 is arranged in spout with oxidation air spray gun 20 basically on identical horizontal plane.
In order to prevent that hot oxidation air is when entering absorption tower 10, cause that moisture content evaporates in a large number in the slurries of oxidation air pipe exit, be provided with cooling water nozzle 51 in the oxidation air supply pipe 50 before oxidation air enters the absorption tower, make the oxidation air cooling and the state that reaches capacity.
For guaranteeing effective, the stable operation of oxidation air feedway, annular oxidation air pipe 40 and being provided with preferably of oxidation air spray gun 20 meet the following conditions: the annular diameter of (1) annular oxidation air pipe 40 is 1/6～2/3 of an absorption tower diameter, can obtain reasonable oxidation air distribution effect like this; (2) annular oxidation air pipe 40 is arranged in the following 3～6m depths of slurries face, and annular oxidation air pipe 40 is distributed in the central authorities on absorption tower, with the absorption tower concentric; (3) pipe diameter of annular oxidation air pipe 40 is 15～100mm, and nozzle 41 adopts wear-resisting, the corrosion-resistant nozzle of SiC or other material; (4) nozzle 41 on oxidation air spray gun 20 and the annular oxidation air pipe 40 is the alternating expression layout, to cover whole absorption tower section.
Claims (6)
1, a kind of oxidation air feedway of wet flue gas desulfurization absorption tower, comprise that a plurality of spray gun, each described spray gun next door that are arranged in the absorption tower are provided with side-feeding mixer, the spout of described spray gun is directed downwards, it is characterized in that, also comprise the annular oxidation air pipe, oxidation air supply pipe and the oxidation fan that are arranged on absorption tower central authorities; The described oxidation air supply pipe of described spray gun and annular oxidation air Guan Junyu is communicated with; Described oxidation air supply pipe links to each other with described oxidation fan; Described annular oxidation air pipe is provided with a plurality of equally distributed nozzles, and described nozzle is directed downwards.
2, the oxidation air feedway of wet flue gas desulfurization absorption tower as claimed in claim 1 is characterized in that, is provided with the cooling water nozzle in the described oxidation air supply pipe.
3, the oxidation air feedway of wet flue gas desulfurization absorption tower as claimed in claim 1 is characterized in that, described oxidation fan adopts Roots blower.
4, the oxidation air feedway of wet flue gas desulfurization absorption tower as claimed in claim 1 is characterized in that, the inlet of described annular oxidation air pipe is provided with the flow control valve that can regulate the oxidation air flow.
5, the oxidation air feedway of wet flue gas desulfurization absorption tower as claimed in claim 1 is characterized in that, the nozzle on the described annular oxidation air pipe adopts the SiC material to make.
6, the oxidation air feedway of wet flue gas desulfurization absorption tower as claimed in claim 1 is characterized in that, the nozzle on described spray gun and the annular oxidation air pipe is alternating expression and arranges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201543414U CN201304317Y (en) | 2008-10-22 | 2008-10-22 | Oxidation air feeder of wet-method flue gas desulfurization absorption-tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201543414U CN201304317Y (en) | 2008-10-22 | 2008-10-22 | Oxidation air feeder of wet-method flue gas desulfurization absorption-tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201304317Y true CN201304317Y (en) | 2009-09-09 |
Family
ID=41096779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201543414U Expired - Lifetime CN201304317Y (en) | 2008-10-22 | 2008-10-22 | Oxidation air feeder of wet-method flue gas desulfurization absorption-tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201304317Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109200693A (en) * | 2018-10-31 | 2019-01-15 | 广州博昊信息科技有限公司 | A kind of desulfuring and denitrifying apparatus of the compressible flue gas of coal-fired plant |
| CN110052118A (en) * | 2018-01-19 | 2019-07-26 | 斗山重工业建设有限公司 | Wet flue gas desulfurizer |
-
2008
- 2008-10-22 CN CNU2008201543414U patent/CN201304317Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110052118A (en) * | 2018-01-19 | 2019-07-26 | 斗山重工业建设有限公司 | Wet flue gas desulfurizer |
| CN110052118B (en) * | 2018-01-19 | 2022-02-08 | 斗山重工业建设有限公司 | Wet flue gas desulfurization device |
| CN109200693A (en) * | 2018-10-31 | 2019-01-15 | 广州博昊信息科技有限公司 | A kind of desulfuring and denitrifying apparatus of the compressible flue gas of coal-fired plant |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090909 |
|
| CX01 | Expiry of patent term |