CN201157753Y

CN201157753Y - Non-mixing oxidation apparatus of flue gas desulfurization slurry pool

Info

Publication number: CN201157753Y
Application number: CNU2007201883318U
Authority: CN
Inventors: 杨剑; 杜云贵; 刘清才; 刘艺; 董凌燕; 隋建才; 李锋; 洪燕; 王方群; 余宇; 强华松; 邓佳佳
Original assignee: Chongqing University; CPI Yuanda Environmental Protection Engineering Co Ltd
Current assignee: Chongqing University; CPI Yuanda Environmental Protection Engineering Co Ltd
Priority date: 2007-11-26
Filing date: 2007-11-26
Publication date: 2008-12-03
Anticipated expiration: 2017-11-26

Abstract

The utility model relates to a non-stirring oxidation device of a fume desulfurization serous fluid tank, in particular to an oxidation device for fume desulfurization. The lower part of the serous fluid tank is provided with round conducts, two ends of at least one diameter of the round conducts are provided with cambered conducts, the lower ends of which are communicated with the round conducts, and the upper ends extend out of the serous fluid tank to be connected with the output end of an air compressor 6 through an external connecting pipe; the internal rings of the round conducts are provided with lower air injection pipes, the lower sections of the cambered conducts present arc shapes, and the pipe walls of the cambered sections of the two cambered conducts are correspondingly provided with upper air injection pipes. The non-stirring oxidation device injects the air needed for oxidation through the air injection pipes after being compressed, to cause the serous fluid in the serous fluid tank to flow and form cyclone, thereby reaching the aim of stirring calcium sulfite, and leaves out a stirring device; in addition, utilizing the air to stir is also favorable to the full contact of oxygen and the calcium sulfite, thereby improving the desulfurization efficiency.

Description

A kind of non-stirring oxidization device of flue gas desulfurization slurry pool

Technical field

The utility model relates to a kind of flue gas desulfur device, specifically, relates to the non-stirring oxidization device in the slurries pond that is used for flue gas desulfurization.

Background technology

Be accompanied by economy development constantly rapidly, atmosphere is by SO ₂The situation of polluting is more and more serious.Coal burning flue gas desulfurization (FGD) is uniquely now can reduce SO on a large scale ₂The approach of discharging, in this technology, limestone-gypsum wet process of FGD (WFGD) occupies leading position.In WFGD, mainly contain two kinds of technology at present, a kind of is the liquid column tower technology, and a kind of is the spray column technology, and two kinds of technology are distinguished by different desulfurizing tower towers.

In the limestone-gypsum wet fuel gas desulfurizing technology, the oxidation of calcium sulfite is an important chemical process, and the height of its oxidation efficiency is directly connected to SO ₂Removal efficiency and the quality of by-produced gypsum, therefore significant to the limestone-gypsum wet fuel gas desulfurizing technology by the oxidation efficiency of suitable approach raising calcium sulfite.

At present, in the slurries pond, in the selection of oxidation technology and equipment, adopt air gun to add the mode of agitator mostly, though can obtain higher calcium sulfite oxidation rate, the equipment complexity, and also agitating device often breaks down.Chinese patent publication number CN1439449, " a kind of wet spray flue gas desulfur device " disclosed, this device has been integrated into forced oxidation, double diameter-changeable spraying layer structure and adverse current wet spray technology in the total system, has effectively guaranteed the atomization quality of drop.Chinese patent publication number CN101062462 discloses a kind of " liquid holding bath side-placed smoke gas desulfurization unit ", and it is made up of flue gas desulfurization section and the side-mounted liquid bath of holding.Flue gas enters from flue gas desulfurization section bottom, and with the absorption liquid counter current contacting that top spray falls, sulfur in smoke is removed; The absorption liquid of falling flue gas desulfurization section bottom is from the liquid bath of holding that flows into flue gas desulfurization section side-lower, and flue gas desulfurization section bottom is retain liquid not; Holding liquid bath top installation agitator, preventing the suspended particulate substance precipitation in the absorption liquid, holding the liquid bath bottom and blast oxidation air, the gas after the oxidation enters the flue gas desulfurization section and discharges with purifying the back flue gas.Be provided with agitator in above-mentioned two patents, agitator is driven by high power motor, and agitator is provided with agitator arm, and structure is comparatively complicated, is out of order easily, but also will regularly cleans deposit on the impeller.

The utility model content

The purpose of this utility model is to provide a kind of flue gas desulfurization slurry pool oxidation unit that need not agitating device.

For achieving the above object, the technical solution of the utility model is as follows: comprise the slurries pond, the bottom in slurries pond is equipped with circular pipe, the two ends of this circular pipe at least one diameter are provided with first curved catheter and second curved catheter, the lower end of this first curved catheter and second curved catheter is communicated with circular pipe, and the upper end is stretched out the slurries pond and is connected with the output of air compressor machine through outer connecting pipe; The inner ring of described circular pipe is provided with down air jet pipe, and for the bottom in the slurries pond produces swirling flow, the center line of this time air jet pipe is sharp angle with the tangent line of this center line of process and circular pipe intersection point, and α is 1 degree～45 degree; The hypomere of described first curved catheter and second curved catheter is curved, this segmental arc tube wall is provided with air jet pipe, for the top in the slurries pond produces swirling flow, with the center line of air jet pipe on this and the tangent line of last air jet pipe intersection point is reference line, and be the plane of reference with the common place of the axial line face in this reference line and slurries pond, the angle that this plane of reference and the described center line of going up air jet pipe form is acute angles beta, and β is 45 degree～89 degree; In order to make air jet pipe consistent with the swirling flow direction that following air jet pipe produces, the rotation direction of described air jet pipe down and last air jet pipe is identical.

As preferably, the last air jet pipe quantity on above-mentioned one first curved catheter and the second curved catheter segmental arc tube wall is 3～8, and the quantity of the following air jet pipe on the above-mentioned circular pipe is 4～10.

Beneficial effect: the utility model air compression back that oxidation is required sprays from air jet pipe, impels the slurries in the slurries pond to flow, and forms swirling flow, thereby reach the purpose that stirs calcium sulfite, has saved agitating device; And, utilize air to stir to also help oxygen fully to contact with calcium sulfite, improved desulfuration efficiency.

Description of drawings

Fig. 1 is the front view of the utility model first embodiment;

Fig. 2 be along A-A among Fig. 1 to view;

Fig. 3 is the enlarged drawing at I place among Fig. 1;

Fig. 4 is the enlarged drawing at J place among Fig. 2;

Fig. 5 be along B-B among Fig. 1 to view;

Fig. 6 is the structural representation of the utility model second embodiment.

The specific embodiment

Further the utility model is illustrated below in conjunction with drawings and Examples:

Embodiment 1, as depicted in figs. 1 and 2, the utility model is mainly by slurries pond 7, circular pipe 3, curved catheter 1,2 and air compressor machine 6 form, circular pipe 3 is installed in the bottom in slurries pond 7, the two ends of 3 one diameters of circular pipe are provided with first curved catheter 1 and second curved catheter 2, and the lower end of this first curved catheter 1 and second curved catheter 2 is communicated with circular pipe 3, and the upper end is stretched out slurries pond 7 and is connected through the output of outer connecting pipe 8 with air compressor machine 6.

Further as Fig. 3, Fig. 4 and shown in Figure 5, be welded with 8 following air jet pipes 5 on the inner ring of described circular pipe 3, the center line of this time air jet pipe 5 is sharp angle with the tangent line of this center line of process and circular pipe 3 intersection points, when α is 1 when spending, spray the swirling flow speed maximum that air form by following air jet pipe 5, when α is 45 degree, the slurries of compressed air in the middle of can stirring like this, α also can be between 1 degree be spent to 45; The epimere of described first curved catheter 1 and second curved catheter 2 is vertical, hypomere is curved, be welded with 4 and go up air jet pipes 4 relatively on this segmental arc tube wall, with the center line of air jet pipe on this 4 and the tangent line of last air jet pipe 4 intersection points is reference line, and be the plane of reference with the common place of the axial line face in this reference line and slurries pond 7, the angle that this plane of reference and the described center line of going up air jet pipe 4 form is acute angles beta, when β is 89 when spending, spray the swirling flow speed maximum that air form by last air jet pipe 4, when β is 45 when spending, slurries in the middle of compressed air can stir like this, β also can be at 45 degree between 89 degree; It is described that air jet pipe 5 is identical with the rotation direction of last air jet pipe 4 down, all to counter clockwise direction deflection, when the slurries height was higher in the slurries pond, last air jet pipe 4 and following air jet pipe 5 all were inclined upwardly, slurries that like this can stirring arm liquid pool top make that the slurries in the whole slurries pond fully stir.

Embodiment 2, as shown in Figure 6, first curved catheter 1, second curved catheter 2, the 3rd curved catheter 9 and the 4th curved catheter 10 are installed on two orthogonal diameter two ends of circular pipe 3, other structures are identical with embodiment 1, and by four curved catheters drum compressed air in slurries pond 7, it is more even to make that slurries stir, the carrying out that more helps oxidation reaction, volume is bigger when the slurries pond, when needing bigger stirring kinetic energy, can continue to increase the quantity of curved catheter.

Simultaneously, the utility model can also use self priming pump to import the mixture of air and slurries, thereby obtains bigger motive force.

Claims

1. non-stirring oxidization device of flue gas desulfurization slurry pool, comprise slurries pond (7), it is characterized in that: the bottom of slurries pond (7) is equipped with circular pipe (3), the two ends of these circular pipe (3) at least one diameters are provided with first curved catheter (1) and second curved catheter (2), the lower end of this first curved catheter (1) and second curved catheter (2) is communicated with circular pipe (3), and the upper end is stretched out slurries pond (7) and is connected through the output of outer connecting pipe (8) with air compressor machine (6); The inner ring of described circular pipe (3) is provided with down air jet pipe (5), and the center line of this time air jet pipe (5) is sharp angle with the tangent line of this center line of process and circular pipe (3) intersection point, and α is 1 degree～45 degree; The hypomere of described first curved catheter (1) and second curved catheter (2) is curved, this segmental arc tube wall is provided with air jet pipe (4), with the center line of air jet pipe on this (4) and the tangent line of last air jet pipe (4) intersection point is reference line, and be the plane of reference with the common place of the axial line face of this reference line and slurries pond (7), the angle that this plane of reference and the described center line of going up air jet pipe (4) form is acute angles beta, and β is 45 degree～89 degree; It is described that air jet pipe (5) is identical with the rotation direction of last air jet pipe (4) down.

2. non-stirring oxidization device of flue gas desulfurization slurry pool according to claim 1 is characterized in that: last air jet pipe (4) quantity on described first curved catheter (1) and second curved catheter (2) is 3～8; The quantity of the following air jet pipe (5) on the described circular pipe (3) is 4～10.