Flow-disturbing catcher and a kind of wet process of FGD dedusting absorption tower
This utility model is related to desulphurization plant, and specifically flow-disturbing catcher and a kind of wet process of FGD dedusting absorbs
Flue gas desulfurization is the both economical and maximally efficient method that coal-burning power plant reduces sulfur oxides emissions, wherein with stone
Lime stone/gypsum wet technique is main flow, and which has a technology maturation, and operating experience is enriched, absorbent abundance, cheap,
The advantages of desulfuration efficiency is high.
Wet desulphurization is that desulfurizing agent and desulfurization product are hygrometric state, react in gas-to-liquid contact using slurry wash flue gas
Carry out, desulfuration efficiency reaches more than 90%, and calcium utilization is high, be the sulfur removal technology of large-sized boiler first-selection both at home and abroad at present.
But the subject matter that at present wet desulphurization faces is void tower desulfurization fume skewness, gas-liquid mass transfer is poor, causes
Desulfuration efficiency can not be improved, it is impossible to meet the environmental requirement of national " minimum discharge ", particularly much spray void tower efficiency of dust collection
30% is less than, What is more negative efficiency occurs.
Arranging orifice plate, rotation remittance bonder etc. in other desulfurizing tower at present carries out flow-disturbing, and the usual resistance of these structures is big, Yi Jie
Dirt, operation power consumption are high, and stability is poor.
Utility model content
For the problems referred to above, in order to solve the deficiencies in the prior art, the special one kind that provides can be used for desulphurization system or dedusting
System, the flow-disturbing catcher of gas-liquid mass transfer effect can be effectively improved.
This utility model also provides a kind of uniform air-flow of energy, by the setting of flow-disturbing catcher, effectively mitigates fouling, blocks up
The wet process of FGD dedusting absorption tower of plug, additionally, the absorption tower can also be prevented effectively from void tower presence because of flue gas escape drawn game
The serosity of the high flue gas flow rate in portion carries the problem that the flue gas dust content for causing increases.
This utility model provide the first string be：
Flow-disturbing catcher, including the hollow housing of a upper and lower surface, is provided with multilamellar flow-disturbing layer, every layer of flow-disturbing layer in housing
The spoiler at multiple intervals is provided with, the spoiler of adjacent layer is shifted to install.Because the flow-disturbing catcher is generally used for desulphurization system
Or dust pelletizing system, in order to not disturb flue gas and sprayed slurry, flow-disturbing catcher top and bottom are set to hollow with by flue gas；
The space that flue gas passes through between the multilamellar spoiler for shifting to install is gradually increasing, and can balance flue gas stream.
Wherein, in order to simplify structure and avoid excessive to flue gas resistance, the spoiler is I-shaped shape or grooved shape
Wherein, when the spoiler is grooved shape, spoiler positive can be arranged or oppositely arranged.
This utility model provide second scheme be：
A kind of wet process of FGD dedusting absorption tower, including：
Tower body, is provided with least one of which spraying layer in tower body, is provided with smoke inlet, described in tower body below spraying layer
The lower section of smoke inlet is provided with air intake in tower body.An at least flow-disturbing catcher is provided between spraying layer and smoke inlet,
The housing of flow-disturbing catcher is set to hollow so that flue gas passes through flow-disturbing catcher, flow-disturbing catcher to be used for airflow balancing, promotion
Even into spraying layer, the design promotes gas, liquid, solid three-phase to be fully contacted to flue gas, realizes that rapid desulfurization, flow-disturbing catcher include
The hollow housing of one upper and lower surface, is provided with multilamellar flow-disturbing layer in housing, and every layer of flow-disturbing layer is provided with the spoiler at multiple intervals, phase
The spoiler of adjacent bed is shifted to install；By the setting of above-mentioned flow-disturbing catcher, the uniform of smoke distribution in tower body is effectively increased
Property, by the spoiler for shifting to install, gas-liquid mass transfer effect is effectively increased, improve the desulfuration efficiency of desulfurizing tower；Additionally, disturbing
The grooved hole for arranging space formation between adjacent spoiler of stream catcher can effectively reduce fouling risk, it is to avoid blocking.
Further, mechanical demister is provided with above spraying layer in the tower body, set above mechanical demister
There are described flow-disturbing catcher, the setting of the flow-disturbing catcher effectively remove the serosity and flue dust carried in flue gas.
Further, the spoiler is I-shaped shape or grooved shape.
Additionally, being I-shaped shape or grooved shape to be located at spoiler in the flow-disturbing catcher below the spraying layer
When, the opening up setting of spoiler is washed away to spoiler with the whitewashing liquid for preventing spraying layer from spraying, and then extends flow-disturbing and caught
Catch the service life of device.
Further, it is I-shaped shape or grooved shape positioned at spoiler in the flow-disturbing catcher above the mechanical demister
During shape, the opening down setting of spoiler removes the serosity and flue dust carried in flue gas.
Additionally, the flue gas in desulfurizing tower is inversely to flow to flow-disturbing catcher, flue gas can be effectively increased and occurred by force with serosity
Strong gas-liquid turbulence is exchanged.
Additionally, in every layer of flow-disturbing layer adjacent spoiler the length being smaller than equal to the spoiler, so arrange
Purpose, not only can guarantee that the uniform of air-flow, and further extends flue gas, the serosity of spray on the motion road of flow-disturbing catcher
Footpath, effectively extends the mass transfer effect of gas-liquid, improves desulfuration efficiency.
The beneficial effects of the utility model are：
1) spoiler by shifting to install, effectively extends mobile route of the flue gas in flow-disturbing catcher, contributes to cigarette
Gas air-flow uniform, effectively increase gas-liquid mass transfer effect, improve the desulfuration efficiency of desulfurizing tower；Alleviate in conventional desulfurization tower
2) by the setting of flow-disturbing catcher, the serosity and flue dust carried in flue gas is removed.
3) spoiler is I-shaped shape or grooved shape, and flue gas, serosity can be promoted to form turbulence exchange between space, complete
Into the absorption and the seizure of flue dust of the sulfur dioxide in flue gas, slurry pool is finally fallen into, the effect of purifying smoke is reached.
Description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation of the second flow-disturbing catcher；
Fig. 3 is the structural representation of the first flow-disturbing catcher.
1- exhanst gas outlets, 2- the second flow-disturbing catchers, 3- machinery demisters, 4- spraying layers, 5- smoke inlets, 6- oxidations are empty
Gas, 7- agitators, 8- slurry pools, 9- the first flow-disturbing catchers.
With reference to Figure of description and specific embodiment, the utility model will be further described：
As shown in Figure 2 and Figure 3, flow-disturbing catcher, including the hollow housing of a upper and lower surface, in housing is provided with multilamellar and disturbs
Fluid layer, every layer of flow-disturbing layer are provided with the spoiler at multiple intervals, and the spoiler of adjacent layer is shifted to install.Because the flow-disturbing catcher leads to
It is usually used in desulphurization system or dust pelletizing system, in order to not disturb flue gas and sprayed slurry, by the upper and lower surface of flow-disturbing catcher
It is set to hollow；The flow-disturbing layer arranged by multilamellar, the space that flue gas passes through between the spoiler for shifting to install are gradually increasing, and are helped
Balance in flue gas stream；The flow-disturbing catcher can be used for flue gas desulfurization or the dedusting application of other systems.
Wherein, in order to simplify structure, the spoiler is I-shaped shape or grooved shape.
Wherein, when the spoiler is grooved shape, spoiler positive can be arranged or oppositely arranged.
As shown in figure 1, former flue gas enters absorption tower by smoke inlet 5, it is provided with tower body in the lower section of the smoke inlet 5
6 entrance of oxidation air, flue gas stream the first flow-disturbing of grooved catcher 9 under spraying layer remove part flue dust and sulfur dioxide
Afterwards, the flue gas being evenly distributed is provided with multilamellar through spraying layer 4, spraying layer 4, and in this region gas, liquid, solid, three are fully contacted, fast
Speed completes secondary mass transfer desulfurization and dedusting process, reaches the purpose of gas purification, and reacted mixing liquid falls into slurry pool 8, this
When purified gas carry steam and enter mechanical 3 demisting of demister, eventually passing the second flow-disturbing of upper strata grooved catcher 2 is carried out
Dedusting simultaneously discharges absorption tower through exhanst gas outlet 1.
Mechanical demister is provided with above spraying layer in the tower body, above mechanical demister, is provided with the second flow-disturbing
Catcher 2, the setting of the second flow-disturbing catcher 2, the flue gas that can be prevented effectively from the presence of conventional desulfurization tower are escaped and the high stream in local
Fast flue gas carries the problem for increasing flue gas dust content.
By the setting of first and second flow-disturbing catcher, the strong adaptability of flow-disturbing catcher, can also effectively mitigate spray
The scale formation of layer, it is to avoid the blocking of spraying layer, improves the dust collection capacity of desulfurizing tower, reduces liquid-gas ratio, save energy consumption.
First and second flow-disturbing catcher includes the hollow housing of a upper and lower surface, is provided with multilamellar flow-disturbing in housing
Layer, every layer of flow-disturbing layer are provided with the spoiler at multiple intervals, and the spoiler of adjacent layer is shifted to install, and the spoiler can also be work
Word shape or zigzag fashion, additionally, in every layer of flow-disturbing layer adjacent spoiler the length being smaller than equal to the spoiler,
The purpose for so arranging, not only can guarantee that the uniform of air-flow, and further extends fortune of the flue gas in the second flow-disturbing catcher
Dynamic path, effectively extends the mass transfer effect of gas-liquid, improves desulfuration efficiency.
Additionally, when being grooved shape to be located in the first flow-disturbing catcher 9 below the spraying layer 4 spoiler, disturbing
The opening up setting of stream part, the serosity of such spraying layer spray can fill up the upper surface of grooved spoiler, to prevent spraying layer
The whitewashing liquid of ejection is washed away to spoiler, and then extends the service life of flow-disturbing catcher.
Further, positioned at spoiler in the flow-disturbing catcher above the mechanical demister be grooved shape when, flow-disturbing
The opening down setting of part, to avoid flue gas in tower body from escaping and aid in the content for reducing dirt in high flow rate flue gas.
Additionally, in order to ensure desulfurized effect, the smoke inlet and the setting at an acute angle of the vertical centrage of the tower body, this
The flue gas that sample is entered in desulfurizing tower is inversely to flow to flow-disturbing catcher, can be effectively increased flue gas, with serosity, strong gas occur
Liquid turbulence is exchanged.
So, flue gas is entered in desulfurizing tower tower body by smoke inlet 5, and flue gas inversely flows through the first flow-disturbing catcher, cigarette
There is strong gas-liquid turbulence and exchange in gas, serosity, the soot dust granule in flue gas is trapped by sprayed slurry, sulfur dioxide also with
Be removed, while the first flow-disturbing catcher also have airflow balancing effect, promote flue gas uniformly enter spraying layer, enter one
Sulfur dioxide in step removing flue gas；Flue gas is moved on continuing, and after mechanical demister demisting, then passes through the second flow-disturbing catcher
Further desulfurizing tower is discharged after dedusting.
Preferred embodiment of the present utility model is the foregoing is only, is not whole embodiments of the present utility model,
Not in order to limit this utility model, all within spirit of the present utility model and principle, any modification for being made, equivalent,
Improve etc., should be included within protection domain of the present utility model.
In addition to technical characteristic described in description, remaining technical characteristic is technology known to those skilled in the art, in order to prominent
Go out innovative characteristicses of the present utility model, above-mentioned technical characteristic will not be described here.