CN209501336U

CN209501336U - A kind of desulfurizing tower single column double circulation structure

Info

Publication number: CN209501336U
Application number: CN201822158445.9U
Authority: CN
Inventors: 宋俊华; 施亚亚
Original assignee: WUXI HUAGUANG NEW POWER ENVIRONMENTAL PROTECTION TECHNOLOGY Co Ltd
Current assignee: Huaguang Environmental Energy Xi'an Design And Research Institute Co ltd
Priority date: 2018-12-21
Filing date: 2018-12-21
Publication date: 2019-10-18
Anticipated expiration: 2028-12-21

Abstract

The utility model provides a kind of desulfurizing tower single column double circulation structure, not only can guarantee the dissolution of lime stone and the generation of gypsum in system, it is also ensured that and desulfuration efficiency is improved to the greatest extent；It includes desulfurizing tower, spraying layer is disposed in the desulfurizing tower, the spraying layer is divided into upper and lower level setting, the desulfurization inner wall of tower between the upper and lower spraying layer is equipped with collection device, the collection device includes at least two catch trays and is in stacked arrangement, there are height gaps between the adjacent catch tray, the catch tray is funnel-shaped, the outer diameter of the catch tray successively successively successively decreases from top to bottom, catch tray is connected with below the catch tray of bottom, the catch tray passes through the recycle slurry liquid pool outside perfusion tube connection.

Description

A kind of desulfurizing tower single column double circulation structure

Technical field

The utility model relates to desulphurization plant technical field, specially a kind of desulfurizing tower single column double circulation structure.

Background technique

At this stage, environmental requirement is higher and higher, the pollutants such as a large amount of SO2, flue dust is contained in coal-fired flue-gas, at present flue gas Desulfurization using it is more be Wet Flue Gas Desulfurization Technique, the Limestone-gypsum Wet Flue Gas Desulfurization Process technique in wet process, Technical comparing is mature, is Most sulfur removal technologies is applied now, and traditional limestone-gypsum desulfurizing tower is arranged generally in the form of spraying void tower, flue gas Entered in desulfurizing tower by desulfurizing tower entrance from slurry pool top, after passing sequentially through spraying layer, demister, through smoke stack emission, When desulfurizing tower desulphurization system operates normally, the plasm PH value in slurry pool is between 5 ~ 6, and desulfurization effect can be improved in general high pH value Rate is but unfavorable for the dissolution of lime stone and the generation of gypsum；Low pH value is conducive to the operation of system, but is unfavorable in flue gas The absorption of SO2, and in desulfurizing tower operation, it needs to guarantee the generation of the dissolution of lime stone and gypsum in system, also to guarantee to take off Sulphur efficiency, but the plasm PH value sprayed can only take the conservative value of compromise, and this to constrain desulfuration efficiency again to a certain extent It further increases.

Utility model content

For the existing desulfurizing tower method of operation, the plasm PH value of spray can only realize the conservative value of compromise, but restrict desulfurization The problem of further increasing of efficiency, the utility model provide a kind of desulfurizing tower single column double circulation structure, not only can guarantee The generation of the dissolution of lime stone and gypsum in system, it is also ensured that and desulfuration efficiency is improved to the greatest extent.

Its technical solution is such that it includes desulfurizing tower, is disposed with spraying layer in the desulfurizing tower, it is characterised in that: The spraying layer is divided into upper and lower level setting, and the desulfurization inner wall of tower between the upper and lower spraying layer is equipped with collection device, institute Stating collection device includes at least two catch trays and in stacked arrangement, there are height gap between the adjacent catch tray, The catch tray is funnel-shaped, and the outer diameter of the catch tray successively successively successively decreases from top to bottom, below the catch tray of bottom It is connected with catch tray, the catch tray passes through the recycle slurry liquid pool outside perfusion tube connection.

It is further characterized by:

It is to be arranged concentrically between the catch tray, ring diameter and the desulfurizing tower internal diameter phase on the catch tray of top layer Together, and with desulfurization inner wall of tower it is connected, passes through between the catch tray, between the catch tray and the catch tray of bottom Ribbed stiffener is connected, and the outer end gradient of the catch tray is all the same；

The lower ring diameter of the catch tray on upper layer is less than the upper ring diameter of the catch tray of lower layer, and is greater than lower layer The lower ring diameter of the catch tray, the lower ring diameter of the catch tray of bottom are less than the overall diameter of the catch tray；

The upper ring end of the catch tray between the catch tray and the catch tray of top layer is respectively connected with water conservancy diversion folding Plate, the water conservancy diversion folded plate are tilted down to desulfurization inner wall of tower direction.

The utility model has the beneficial effects that the spraying layer in desulfurizing tower is divided into upper and lower level setting, that is, by desulfurizing tower It is divided into two reaction zones section up and down, flue gas is bottom-up, falls directly into tower bottom, upper layer after lower layer's reaction zone slurries and smoke reaction Reaction zone is then collected the slurries after reaction to catch tray by the catch tray of stacked arrangement, drains into desulfurization by perfusion tube Recycle slurry liquid pool outside tower then can independently realize the slurries of different PH to carry out cyclic absorption, thus not only in desulfurizing tower It can guarantee the dissolution of lime stone and the generation of gypsum, it is also ensured that and further raising desulfuration efficiency.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the top view of collection device.

Specific embodiment

As shown in Figure 1 and Figure 2, the utility model includes desulfurizing tower 1, and spraying layer 2 is disposed in desulfurizing tower 1, and spraying layer 2 divides It is arranged for upper and lower level, 1 inner wall of desulfurizing tower between upper and lower spraying layer 2 is equipped with collection device, and collection device includes at least two Catch tray 3 and be in stacked arrangement, the slurries of upper layer reaction zone can be collected to tower outer circulation slurry pool, ultimately form two Desulfuration efficiency can be improved in independent slurry pool, the slurry pool of high pH value, and the slurry pool of low pH value is conducive to the dissolution of lime stone With the generation of gypsum, the runnability and gypsum qualitt of desulphurization system are improved；There are height gap between adjacent catch tray 3, Catch tray 3 is funnel-shaped, and the outer diameter of catch tray 3 successively successively successively decreases from top to bottom, is connected with liquid collecting below the catch tray 3 of bottom Disk 4, catch tray 4 connect external recycle slurry liquid pool by perfusion tube 5.

Be to be arranged concentrically between catch tray 3, ring diameter is identical as 1 internal diameter of desulfurizing tower on the catch tray 3 of top layer, and with it is de- 1 inner wall of sulphur tower is connected, and is connected by ribbed stiffener between catch tray 3, between the catch tray 3 of bottom and catch tray 4, can be protected Rigidity is held, the outer end gradient of catch tray 3 is all the same；The lower ring diameter of the catch tray 3 on upper layer is less than the upper of the catch tray 3 of lower layer Ring diameter, and it is greater than the lower ring diameter of the catch tray 3 of lower layer, the lower ring diameter of the catch tray 3 of bottom is less than the outer straight of catch tray 4 Diameter prevents the slurries flow down from escaping from gap；The upper ring end of catch tray 3 between the catch tray 3 and catch tray 4 of top layer It is respectively connected with water conservancy diversion folded plate 6, water conservancy diversion folded plate 6 is tilted down to 1 inner wall direction of desulfurizing tower, is used for flue gas water conservancy diversion, is made upward Flue gas flows uniformly through the gap between each catch tray 3, passes through transmit the liquid curtain to get off from top to down at a high speed, forms gas-membrane mass transfer It absorbs, this collection device has the function of that liquid collecting, reactive absorption, flue gas water conservancy diversion are integrated, can reduce liquid-gas ratio, reach reduction energy Consumption, improves the purpose of desulfuration efficiency.

In the utility model, the spraying layer 2 in desulfurizing tower 1 divides to be arranged for upper and lower level, that is, it is upper and lower that desulfurizing tower 1, which is divided, Two reaction zones section, flue gas is bottom-up, the slurries of upper and lower layer spray reaction zone from top to bottom, lower layer's reaction zone slurries with Tower bottom, the receipts that the slurries after slurries and smoke reaction are then passed through stacked arrangement by upper layer reaction zone are fallen directly into after smoke reaction Catch basin 3 is collected to catch tray 4, i.e., slurries successively flow to next layer of catch tray 3 along the inner wall of catch tray 3 from top to bottom It is interior, until collecting to catch tray 4, the recycle slurry liquid pool outside desulfurizing tower 1 is drained by perfusion tube 5, then it can be only in desulfurizing tower 1 The slurries of realization different PH are found to carry out cyclic absorption, to not only can guarantee the dissolution of lime stone and the generation of gypsum, also It can guarantee and further improve desulfuration efficiency.

Claims

1. a kind of desulfurizing tower single column double circulation structure comprising desulfurizing tower is disposed with spraying layer in the desulfurizing tower, and feature exists In: the spraying layer is divided into upper and lower level setting, and the desulfurization inner wall of tower between the upper and lower spraying layer is equipped with collection dress It sets, the collection device includes at least two catch trays and is in stacked arrangement, and there are height between the adjacent catch tray Gap, the catch tray is funnel-shaped, and the outer diameter of the catch tray successively successively successively decreases from top to bottom, the catch tray of bottom Lower section is connected with catch tray, and the catch tray passes through the recycle slurry liquid pool outside perfusion tube connection.

2. a kind of desulfurizing tower single column double circulation structure according to claim 1, it is characterised in that: between the catch tray To be arranged concentrically, on the catch tray of top layer, ring diameter is identical as the desulfurizing tower internal diameter, and is connected with desulfurization inner wall of tower, It is connected by ribbed stiffener between the catch tray, between the catch tray of bottom and the catch tray, the catch tray Outer end gradient it is all the same.

3. a kind of desulfurizing tower single column double circulation structure according to claim 1, it is characterised in that: the catch tray on upper layer Lower ring diameter be less than lower layer the catch tray upper ring diameter, and be greater than lower layer the catch tray lower ring diameter, bottom The lower ring diameter of the catch tray of layer is less than the overall diameter of the catch tray.

4. a kind of desulfurizing tower single column double circulation structure according to claim 1, it is characterised in that: the catch tray of top layer The upper ring end of the catch tray between the catch tray is respectively connected with water conservancy diversion folded plate, and the water conservancy diversion folded plate is to described de- Sulphur inner wall of tower direction tilts down.