CN201543335U

CN201543335U - Dehydration demister

Info

Publication number: CN201543335U
Application number: CN2009202567355U
Authority: CN
Inventors: 孔浩; 唐波
Original assignee: ZHENJIANG JINRUI ENVIRONMENTAL PROTECTION EQUIPMENT CO Ltd
Current assignee: ZHENJIANG JINRUI ENVIRONMENTAL PROTECTION EQUIPMENT CO Ltd
Priority date: 2009-10-30
Filing date: 2009-10-30
Publication date: 2010-08-11
Anticipated expiration: 2019-10-30

Abstract

The utility model relates to a dehydration demister which comprises a first-stage channel (1), rotational flow sheets (2), a cushioning channel (3), a second-stage channel (4) and flow baffles (5). The rotational flow sheets (2) and the flow baffles (5) are respectively arranged in the first-stage channel (1) and the second-stage channel (4), the cushioning channel (3) is arranged between the first-stage channel (1) and the second-stage channel (4), the flow baffles (5) are respectively arranged at the end of each stage of channel, and the rotational flow sheets (2) are internal trapezoidal micro circular-arc plate blades. The rotational flow sheets (2) adopt single blades, and the single blades adopt triangular pore space with the bottom spacing of 1,645mm and the horizontal height of 2,620mm. Inclination angles of the first-stage channel (1) and the second-stage channel (4) are respectively 24 DEG and 114 DEG. The first-stage channel (1) is in dextrorotatory form and the second-stage channel (4) is in levorotatory form. The shape design of the blades of the rotational flow sheets and the increasing of the channel stages increase the flowing distance and collision number of times of smoke, which greatly improves the demisting efficiency.

Description

The dehydrating demisting device

Technical field

The utility model relates to a kind of demister, relates in particular to a kind of dehydrating demisting device.

Background technology

Because the board-like dehydrating demisting device of big spacing eddy flow of former employed dehydrating demisting device Flow Behavior single-stage single channel formula, so the dehydrating demisting weak effect, demist is unclean, and drop is carried secretly seriously.Its reason mainly contain following some:

1. former demister is the single channel demister, and port number is the number of times that airflow direction changes, and is an important parameter of demister.The port number of demister is the amount doesn't matter, but should be taken into account the relation between demist efficient and pressure drop and the cleaning complexity.General port number is many more, and demist efficient is just high more, and the pressure drop of demister is big more, also is difficult for rinsing well, and producing possibility of jamming also increases.The single channel demister is the minimum demister of port number, so be to remove minimum a kind of of fog effect.

2. progression then represents to use the number of dehydrating demisting device, and is the amount doesn't matter according to demand, the same with port number, and progression many demists efficient more is high more.The single-stage demister also is minimum a kind of of progression, and removing fog effect does not generally have the good of secondary.

3. blade pitgh also directly has influence on the effect of demister.The increase of blade pitgh makes the circulation area of particle in passage become big, and the velocity attitude of air-flow variation simultaneously tends towards stability, and makes particle better to the followability of air-flow, is easy to along with air flow stream goes out blade path and is not captured the reduction of demist efficient.Interlobate spacing more little (except that the blade spacing less than the 18mm), demist efficient is high more, the flushing difficulty is also big more, the possibility that is blocked also increases, pressure drop increases.The cleaning of demister is added to the difficulties.Also can increase simultaneously the blade quantity in the unit are, and then increase the quality and the cost of demister.Previously used demister is spacing 750mm in single blade, the trapezoidal big spacing hole of olo 1300mm.So demist poor effect.

4. air-flow has only a kind of rotation mode, and collision probability was little when drop rose, and the droplet congregating amount is few

The utility model content

1, technical problem to be solved:

Provide a kind of demist efficient higher dehydrating demisting device at above not enough the utility model.

2, technical scheme:

The utility model comprises first order passage, spinning disk, buffer channel, second level passage, flow-stopping plate; Be respectively equipped with spinning disk and flow-stopping plate in first order passage and the second level passage; Be provided with buffer channel between first order passage and the second level passage; Flow-stopping plate is arranged on the end of every grade of passage; Spinning disk is interior trapezoidal little arc plate blade.

Spacing 1645mm at the bottom of single blade of described spinning disk, level height is the triangle hole of 2620mm.

Described first order passage inclination angle is 24 °, and passage 4 inclination angles in the second level are 114 °.

Described first order passage is the dextrorotation formula, and second level passage is a levoform.

The quantitative range of described spinning disk blade is adjustable in 6 to 12 according to exhaust gas volumn.

3, beneficial effect:

The increase of design of the blade shape of spinning disk and passage progression improves demist efficient greatly thereby the number of times of distance that flue gas flows through and collision is increased.The hole gap ratio of spinning disk slightly amplified originally, thereby reduced the increase of pressure drop, regulated the extra pressure drop that increases.Second level passage makes flue gas change direction of rotation, and the drop in the flue gas is fully assembled.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the structural representation of the utility model flow-stopping plate.

The specific embodiment

Below in conjunction with the drawings and specific embodiments the utility model is done explanation in further detail.

As shown in Figure 1 and Figure 2, wherein 1 is first order passage, and 2 is spinning disk, and 3 is buffer channel, and 4 is second level passage, and 5 is flow-stopping plate.

The utility model comprises first order passage 1, spinning disk 2, buffer channel 3, second level passage 4, flow-stopping plate 5;

Be respectively equipped with spinning disk 2 and flow-stopping plate 5 in first order passage 1 and the second level passage 4;

Spinning disk 2 is interior trapezoidal little arc plate blade for spinning disk, interior trapezoidal little arc plate blade design of spinning disk 2 and first order passage 1, second level passage 4, thus the distance that the increase flue gas is flowed through and the number of times of collision improve demist efficient greatly.

Spacing 1645mm at the bottom of single blade of spinning disk 2, level height is the triangle hole of 2620mm.(blade pitgh is unfixing can be adjusted by number of blade decision.) the hole gap ratio of spinning disk 2 slightly amplifies originally, thereby reduce the increase of pressure drop, regulate the extra pressure drop that increases.The quantitative range of blade is adjustable in 6 to 12 according to exhaust gas volumn.

First order passage 1 inclination angle is 24 °, and passage 4 inclination angles in the second level are 114 °, is provided with buffer channel 3 between first order passage 1 and the second level passage 4; Because first order passage 1 inclination angle diminishes, the mist droplet particle size that can go out is also more little, but anxious turning can increase pressure drop.Because the tear effect of spinning disk 2 wedge angles to liquid film added in the increase of spinning disk 2 surperficial shearings, the secondary that can increase droplet carries simultaneously.So add the vertical buffer channel of the preceding paragraph 3 in the middle of first order passage 1 and second level passage 4, passage 4 inclination angles in the second level are 114 °, in the time of with assurance demist efficient, prevent that secondary from carrying.

Second level passage 4 makes flue gas change direction of rotation.Flue gas enters second level passage 4 in 1 dextrorotation of first order passage behind buffer channel 3, direction is left-handed.Drop in the flue gas is fully assembled.

For making the drop in the flue gas fully collide gathering, install flow-stopping plate 5 additional at the end of every grade of passage, flue gas collision flow-stopping plate 5 backs capture the last drop that exists.

Though the utility model with preferred embodiment openly as above; but they are not to be used for limiting the utility model; anyly be familiar with this skill person; in the spirit and scope that do not break away from the utility model; can do various variations or retouching from working as, what therefore protection domain of the present utility model should be defined with the application's claim protection domain is as the criterion.

Claims

1. a dehydrating demisting device is characterized in that: comprise first order passage (1), spinning disk (2), buffer channel (3), second level passage (4), flow-stopping plate (5); Be respectively equipped with spinning disk (2) and flow-stopping plate (5) in first order passage (1) and the second level passage (4); Be provided with buffer channel (3) between first order passage (1) and the second level passage (4); Flow-stopping plate (5) is arranged on the end of every grade of passage; Spinning disk (2) is interior trapezoidal little arc plate blade.

2. dehydrating demisting device according to claim 1 is characterized in that: spacing 1645mm at the bottom of single blade of described spinning disk (2), level height is the triangle hole of 2620mm.

3. dehydrating demisting device according to claim 1 is characterized in that: described first order passage (1) inclination angle is 24 °, and second level passage (4) inclination angle is 114 °.

4. according to claim 1 or 3 described dehydrating demisting devices, it is characterized in that: described first order passage (1) is the dextrorotation formula, and second level passage (4) is a levoform.

5. dehydrating demisting device according to claim 1 and 2 is characterized in that: the quantitative range of described spinning disk (2) blade is adjustable in 6 to 12 according to exhaust gas volumn.