CN102249360A - Device for removing carbon dioxide from aquaculture water - Google Patents

Abstract

The invention discloses a device for removing carbon dioxide from aquaculture water. The device comprises a tower body, at least one packing layer, a water inlet pipeline, a water outlet pipeline, an air outlet, an air inlet, a negative-pressure air suction device and a liquid distributor, wherein the water inlet pipeline is communicated with the upper part of the tower body; the water outlet pipeline is communicated with the lower part of the tower body; the air outlet is formed on the top of the tower body; the air inlet is formed on the side wall of the tower body and is a little higher than the water outlet; the liquid distributor is arranged at a position in the tower body, which is a certain vertical distance away from the upper surface of the packing layer; every packing layer comprises a support plate and packing; the water inlet pipeline is provided with a water inlet device which is arranged on the top of the tower body and comprises a plurality of distributed spraying ports; a gate valve and a flow meter for controlling the water inlet flow are arranged at a position on the water inlet pipeline close to the water inlet; the negative-pressure air suction device is a cone-frustums-shaped air pulling barrel; and the top of the air suction device is selectively provided with an air cap for raising the negative pressure by using air flow, and can be also selectively provided with a butterfly valve and a gas flow meter for controlling the air exhaust capacity. The device has a simple structure, is convenient to install, realizes unpowered wind suction by making full use of the negative pressure, can be used for effectively removing carbon dioxide contained in circulating aquaculture water body and is energy-saving and environment-friendly.

Description

Culture water co 2 removal device

Technical field

The present invention relates to a kind of breed water co 2 removal device that is used for removing the carbonic acid gas of aquaculture system.

Background technology

In circulating water culture system, utilize water resources in order to save, generally adopt the recycle system to come purifying aquatic water, and the rate of water exchange of every day is very low usually, is approximately about 10%.On the other hand, the cultivation density of fish constantly increases along with its growth, and this moment, fish breathing and biofiltration nitration reaction can produce a large amount of carbon dioxide build-up, causes the carbonic acid gas that is dissolved in the water to increase severely.

In high-density cultivation system, concentration of carbon dioxide reaches more than 20-100 times of environment saturation concentration usually.Well-known is that carbonic acid gas is deleterious to fish, because it has reduced the oxygen carrying capacity of fish body blood, can cause fish death by suffocation when serious; Obviously reduce the pH value of aquaculture water simultaneously, influence the biopurification effect.Fish to the tolerance level of carbonic acid gas according to stage of the kinds of fish, growth and whole water quality condition and difference.For tilapia and perch, the safe concentration of carbonic acid gas is up to 60mg/L, and for responsive fish, the safe concentration of carbonic acid gas is up to 20mg/L.The general recommendation, the concentration of carbon dioxide of aquaculture water should be less than 10mg/L.

When cultivation density less than 30kg/m ³-60kg/m ³The time, conventional blast aeration oxygenation usually can be by the loose stirring on G﹠W surface of Bubbled stone, and the process that spray falls is got rid of carbonic acid gas.As the 60kg/m of cultivation density to modern technologies ³-100kg/m ³During development, generally adopt the oxygen supply of pure oxygen method, want this moment from the high-density breeding water body, to get rid of a large amount of carbonic acid gas unworkable fast with traditional blast aeration mode of passing through.

Therefore, in the high-density circulating water cultivation water body that adopts pure oxygen oxygenation, press for and a kind ofly can effectively remove carbonic acid gas, simultaneously breed water co 2 removal device that again can energy efficient.

Summary of the invention

The object of the present invention is to provide a kind of co 2 removal device that is applicable to the high-density cyclic culture water body of pure oxygen oxygenation, can effectively remove the carbonic acid gas of culturing in the water, again can energy efficient.

Breed water co 2 removal device provided by the present invention comprises a tower body, one deck packing layer, of being located at tower body inside is communicated with the suction culvert on tower body top, air outlet, that an outlet pipeline, that is communicated with the tower body bottom is located at the tower body top and is located at the tower body sidewall and is located at the liquid distributor of tower body inside apart from the upper surface certain altitude position of packing layer a little more than blast inlet, a negative pressure air intake device and of water outlet at least.Wherein, each layer of described packing layer comprises a back up pad and filler; Described filler can be structured packing or dumped packing; Described suction culvert is provided with a water feed apparatus that comprises the mouth spray of a plurality of distributions at the tower body top, also be provided with a gate valve and a under meter with the control flooding velocity in this suction culvert near its water inlet position; Described negative pressure air intake device is the air duct that pulls out that is taper type, its lower end is matched with the air outlet at tower body top, its top is provided with a blast cap alternatively and promotes negative pressure to utilize air-flow, in addition, describedly pulls out that air duct also is provided with butterfly valve alternatively and gas meter is controlled exhaust air rate.Further, described liquid distributor is a disc type orifice flow type, and the diameter of its percentage of open area and liquid distributing hole is designed to make the liquid level that keeps on the liquid distributor to be no less than 5 millimeters, and preferably, its percentage of open area is not higher than 10%, and the liquid distributing hole diameter is for being not less than 5 millimeters.

The breed water co 2 removal device of technique scheme has simple in structure according to the present invention, easy for installation, make full use of negative pressure and realize unpowered air draught, effectively remove the carbonic acid gas that contains in the cyclic culture water body, the advantage of not only energy-conservation but also environmental protection can be widely used in the novel co 2 removal device in the high-density circulating water cultivation water body of pure oxygen oxygenation.

Description of drawings

Fig. 1 is the structural representation according to breed water co 2 removal device of the present invention;

Fig. 2 A and 2B are respectively vertical view and the sectional views according to the liquid distributor in the breed water co 2 removal device of the present invention;

Fig. 3 A and 3B are respectively according to structural representation that pulls out air duct and schematic diagram in the breed water co 2 removal device of the present invention.

Embodiment

Figure 1 shows that a kind of specific embodiment of culturing water co 2 removal device according to principle design of the present invention, this breed water co 2 removal device mainly comprises a tower body 10, be located at the multilayer packing layer 20 of tower body 10 inside, one is communicated with the suction culvert 30 on tower body 10 tops, one is communicated with the outlet pipeline 40 of tower body 10 bottoms, one is located at the blast inlet 50 of tower body 10 sidewalls near packing layer 20 belows, pull out an air duct 60 and a liquid distributor 70 in one air outlet that is arranged in the center of top of tower body 10 (among the figure sign ginseng number).

The packing layer 20 of tower body 10 inside is made of multilayer back up pad 21 and the filler 22 that piles up on this back up pad 21, and described filler 22 can be structured packing or dumped packing.If dumped packing should guarantee ratio D/d＞8 of inside diameter D with the diameter d of filler 22 of tower body 10, so that make the uniform gas-liquid distribution of the filler 22 of flowing through.The whole height of described packing layer 20 can be 1～1.5m.The back up pad 21 of packing layer 20 should have the weight that sufficient intensity and rigidity support filler 22.The percentage of open area of back up pad 21 is bigger, and gas-liquid can be passed through smoothly, generally can adopt forms such as orifice plate type, screen type, grid beam type, gas-liquid bypass type.

The front end of suction culvert 30 comprises a water pump 31, is used for water is delivered to the water feed apparatus 32 that is located at tower body 10 tops by pipeline, and need removes the breed water of carbonic acid gas by this water feed apparatus 32 to tower body 10 delivered inside.Between this water pump 31 and water feed apparatus 32, be provided with a gate valve 33 and a under meter 34, be used to measure and control the flow of water body.Special feature of the present invention is that also this water feed apparatus 32 comprises that a plurality of mouth sprays distributions are arranged on the top of tower body 10, are evenly distributed on the liquid distributor 70 water.

Preferably, liquid distributor 70 is set at the mouth spray below of this water feed apparatus 32, further makes liquid homodisperse ground sprinkle on packing layer 20.A kind of specific embodiment of described liquid distributor 70 is the structure shown in Fig. 2 A and Fig. 2 B, as shown in the figure, described liquid distributor 70 is a disc type orifice flow type, and its percentage of open area is designed to about 10%, generally is not higher than 10%, for preventing that liquid distributing hole from stopping up, the liquid distributing hole diameter is generally greater than 5mm, and the size in aperture is generally according to the flow of cyclic culture water and difference, and flow is bigger, then requiring must be bigger with aperture design, and liquid level is also determined with the size and the flow in aperture.For guaranteeing liquid level at least more than 5mm, the diameter of percentage of open area and liquid distributing hole need design according to the flow range that is suitable for.On the installation site, described disc type liquid distributor 70 needs enough gas release spaces, generally is placed in apart from filler upper surface 150-300mm place; Be connected the sidewall of available silica gel and tower body 10 sealing around it with tower body 10 by self-tapping screw.

Pull out air duct 60 and be set at tower body 10 tops that the present invention cultures water co 2 removal device, operation design requirements according to the aquaculture water system, it has certain preset height H, shape is the frustum shape, match with the central through hole of liquid distributor 70 in the bottom that diameter is bigger, the less top of diameter extends upward maybe and can lead to beyond the roof.When the indoor and outdoor draught head reaches when making that tower body 10 is inner to form negative pressure, this pulls out air duct 60 and can be used as the negative pressure air intake device, sucks ambient airs by blast inlet 50, at the tower body 10 inner negative-pressure suckings that form.In order to regulate and control the negative-pressure sucking that pulls out air duct 60, can also establish a butterfly valve 61 and a gas meter 62 at the middle part of pulling out air duct 60, so that suction air volume is automatically adjusted.

Another the preferred embodiment according to the present invention, at this top of pulling out air duct 60 blast cap 63 can also be set, not only can be used for further strengthening wind-drawing effect, can also be used to preventing that the air-flow that the interference owing to outer gas stream forms from pouring in down a chimney, and play the effect of rainproof snow defence.

The operation logic of breed water co 2 removal device of the present invention is as follows: at first, the breed water that is rich in carbonic acid gas enters removal device by suction culvert 30.Water pump 31 on the suction culvert 30 is cultured water with round-robin and is pumped to the water feed apparatus 32 that extends to tower body 10 tops by pipeline, through the mouth spray that water feed apparatus 32 distributes be injected in liquid distributor 70 above.The flow of cyclic culture water can be regulated by gate valve on the suction culvert 30 33 and under meter 34, makes the liquid that enters tower body 10 tops reach liquid level more than about 20mm on liquid distributor 70.Subsequently, the liquid distributing hole that the cyclic culture water body sees through liquid distributor 70 again sprinkle equably disperses to form film on the surface of filler 22 on the surface of filler 22, under the slit flow between the filler 22, also may become drop to fall.Because the acting in conjunction of pulling out air duct 60 and blast cap 63, blast inlet 50 ambient airs are inhaled in the tower body 10, make the surface of packing layer 20 become the mass transfer surface of gas-liquid two-phase contact, make air fully contact at packing layer 20 with water, carbonic acid gas will be overflowed from culture water, thereby realizes the removal of carbonic acid gas.At last, discharge by water outlet 40 through the breed water of co 2 removal.As shown in Figure 1, the water outlet that is provided with near the bottom of tower body 10 can be designed to overflow type, and when water level reaches the upper end height of water outlet, water can overflow from water outlet automatically, discharge through outlet pipeline 40, prevent that simultaneously extraneous gas from entering or internal gas spills from this water outlet.

For making technical scheme of the present invention and effect more be easy to understand and understand, further set forth principle of the present invention below in conjunction with specific examples.

Example:

Breed water co 2 removal device of the present invention is applied in the northern flounder flounder class high-density circulating water culture system, pull out air duct 60 (seeing Fig. 3 A) as the structure iron of the simplification of its negative pressure air intake device shown in Fig. 3 B.Suppose to pull out air duct 60 and highly be H, external temperature is-3 ℃, outdoor density of air ρ _a=1.3082Kg/m ³, room temp is 16 ℃, indoor density of air ρ _g=1.2177Kg/m ³, the speed V of air outlet ₃Be 2m/s, cross section 3-3 is in the air outlet position of pulling out air duct 60, and cross section 2-2 is in the bottom of pulling out air duct 60, and it is as follows to the gas Bernoulli's equation of cross section 3-3 to be listed as cross section 2-2:

h _s2+h _g2+h _d2＝h _s3+h _g3+h _d3+h _L2-3 (1)

Wherein, h _S2Gas-static head for the 2-2 position, bottom section of pulling out air duct 60; h _G2Gas position pressure head for the 2-2 position, bottom section of pulling out air duct 60; h _D2Gas dynamic pressure head for the 2-2 position, bottom section of pulling out air duct 60; h _S3Gas-static head for the top cross-section 3-3 air outlet position of pulling out air duct 60; h _G3Gas position pressure head for the top cross-section 3-3 air outlet position of pulling out air duct 60; h _D3Gas dynamic pressure head for the top cross-section 3-3 air outlet position of pulling out air duct 60; h _L2-3For gas rises to the drag losses of the top cross-section 3-3 position of pulling out air duct 60 from the 2-2 position, bottom section of pulling out air duct 60, unit is Pa.

Getting the top cross-section 3-3 that pulls out air duct 60 is reference plane, that is:

h _S3=0; h _G3=0; Then, ${\mathrm{<figure-callout\; id="3"\; label="h\; d"\; filenames="HDA0000061517540000031.png"\; state="\{\{state\}\}">h</figure-callout>}}_d={\mathrm{\&rho;}}_{\mathrm{<figure-callout\; id="3"\; label="g\; V"\; filenames="HDA0000061517540000031.png"\; state="\{\{state\}\}">g</figure-callout>}}{V}_{}^{}{}_3^2/2;$

Arrangement can get: ${\mathrm{<figure-callout\; id="2"\; label="P\; M"\; filenames="HDA0000061517540000031.png"\; state="\{\{state\}\}">P</figure-callout>}}_M+({\mathrm{\&rho;}}_a-{\mathrm{\&rho;}}_g)\mathrm{gH}+\frac{{\mathrm{\&rho;}}_g}{2}{\mathrm{<figure-callout\; id="2"\; label="V"\; filenames="HDA0000061517540000031.png"\; state="\{\{state\}\}">V</figure-callout>}}_2^2=\frac{{\mathrm{\&rho;}}_g}{2}{\mathrm{<figure-callout\; id="3"\; label="V"\; filenames="HDA0000061517540000031.png"\; state="\{\{state\}\}">V</figure-callout>}}_3^2+h_{L2-3}---\left(2\right)$

Actual draft h _v: $h_v=-{\mathrm{<figure-callout\; id="2"\; label="P\; M"\; filenames="HDA0000061517540000031.png"\; state="\{\{state\}\}">P</figure-callout>}}_M=({\mathrm{\&rho;}}_a-{\mathrm{\&rho;}}_g)\mathrm{gH}-\frac{{\mathrm{\&rho;}}_g}{2}({\mathrm{<figure-callout\; id="3"\; label="V"\; filenames="HDA0000061517540000031.png"\; state="\{\{state\}\}">V</figure-callout>}}_3^2-{\mathrm{<figure-callout\; id="2"\; label="V"\; filenames="HDA0000061517540000031.png"\; state="\{\{state\}\}">V</figure-callout>}}_2^2)-h_{L2-3}$

Wherein, V ₃Gas velocity (m/s) for the air outlet position of the top cross-section 3-3 that pulls out air duct 60; P _M2For the gas-static of the 2-2 position, bottom section of pulling out air duct can (Pa); V ₂Be the gas velocity (m/s) of the 2-2 position, bottom section of pulling out air duct, ρ _aDensity of air (kg/m during for-3 ℃ ³); ρ _gDensity of air (kg/m when being 16 ℃ ³).

Then, with reference to the design of chimney, d ₂=(1.3～1.5) * d ₃, get d here ₂=1.5d ₃Wherein, d ₂Be the base diameter (m) that pulls out air duct; d ₃For pulling out the air outlet diameter (m) of air duct 60.Known V ₃=2m/s pulls out air duct 60 each section flow and equates, then:

$Q=\frac{{\mathrm{\&pi;<figure-callout\; id="3"\; label="d"\; filenames="HDA0000061517540000031.png"\; state="\{\{state\}\}">d</figure-callout>}}_3^2}{4}\&times;{\mathrm{<figure-callout\; id="3"\; label="V"\; filenames="HDA0000061517540000031.png"\; state="\{\{state\}\}">V</figure-callout>}}_3=\frac{{\mathrm{\&pi;<figure-callout\; id="2"\; label="d"\; filenames="HDA0000061517540000031.png"\; state="\{\{state\}\}">d</figure-callout>}}_2^2}{4}\&times;{\mathrm{<figure-callout\; id="2"\; label="V"\; filenames="HDA0000061517540000031.png"\; state="\{\{state\}\}">V</figure-callout>}}_2$

: V ₂=0.89m/s

Pulling out the internal resistance of air duct decreases: $h_{L2-3}=\mathrm{\&epsiv;}\frac{H}{d_{\mathrm{cp}}}\&times;\frac{{\mathrm{<figure-callout\; id="2"\; label="V\; cp"\; filenames="HDA0000061517540000031.png"\; state="\{\{state\}\}">V</figure-callout>}}_{\mathrm{cp}}^{}}{2}{\mathrm{\&rho;}}_g(1+\frac{t_{\mathrm{cp}}}{273})---\left(3\right)$

Pull out the mean diameter of air duct: $d_{\mathrm{cp}}=\frac{{\mathrm{<figure-callout\; id="2"\; label="d"\; filenames="HDA0000061517540000031.png"\; state="\{\{state\}\}">d</figure-callout>}}_2+{\mathrm{<figure-callout\; id="3"\; label="d"\; filenames="HDA0000061517540000031.png"\; state="\{\{state\}\}">d</figure-callout>}}_3}{2}=1.25{\mathrm{<figure-callout\; id="3"\; label="d"\; filenames="HDA0000061517540000031.png"\; state="\{\{state\}\}">d</figure-callout>}}_3$

Pull out the V-bar of air duct air: $V_{\mathrm{cp}}=\frac{4Q}{{\mathrm{\&pi;<figure-callout\; id="2"\; label="d\; cp"\; filenames="HDA0000061517540000031.png"\; state="\{\{state\}\}">d</figure-callout>}}_{\mathrm{cp}}^{}}=1.28m/s$

If pull out the bottom temp t of air in the air duct ₂=16 ℃, pull out every meter temperature drop coefficient α=1.5 of air duct ℃/m, then temperature out is:

t ₃＝t ₂-α×H＝16-1.5H

$t_{\mathrm{cp}}=\frac{{\mathrm{<figure-callout\; id="2"\; label="t"\; filenames="HDA0000061517540000031.png"\; state="\{\{state\}\}">t</figure-callout>}}_2+{\mathrm{<figure-callout\; id="3"\; label="t"\; filenames="HDA0000061517540000031.png"\; state="\{\{state\}\}">t</figure-callout>}}_3}{2}=16-0.75H$

Look into " air movement viscosity " Biao Kede, 16 ℃ of space-time fate kinetic viscosities are

$\mathrm{Re}=\frac{v_{\mathrm{cp}}{d}_{\mathrm{cp}}}{\mathrm{\&theta;}}=\frac{1.28\&times;1.25{\mathrm{<figure-callout\; id="3"\; label="d"\; filenames="HDA0000061517540000031.png"\; state="\{\{state\}\}">d</figure-callout>}}_3}{15.7\&times;{10}^{-6}}=101911{\mathrm{<figure-callout\; id="3"\; label="d"\; filenames="HDA0000061517540000031.png"\; state="\{\{state\}\}">d</figure-callout>}}_3$

Air is laminar flow, then resistance coefficient in the flow state of pulling out air duct:

$\mathrm{\&epsiv;}=\frac{64}{\mathrm{Re}}=\frac{64}{101911{\mathrm{<figure-callout\; id="3"\; label="d"\; filenames="HDA0000061517540000031.png"\; state="\{\{state\}\}">d</figure-callout>}}_3}$

Substitution (3) formula gets:

$h_{L2-3}=\frac{64}{101911{\mathrm{<figure-callout\; id="3"\; label="d"\; filenames="HDA0000061517540000031.png"\; state="\{\{state\}\}">d</figure-callout>}}_3}\&times;\frac{H}{1.25{\mathrm{<figure-callout\; id="3"\; label="d"\; filenames="HDA0000061517540000031.png"\; state="\{\{state\}\}">d</figure-callout>}}_3}\&times;\frac{{1.28}^2}{2}\&times;1.2177\&times;(1+\frac{16-0.75H}{273})$

$=5.01\&times;{10}^{-4}\frac{\mathrm{<figure-callout\; id="3"\; label="H\; d"\; filenames="HDA0000061517540000031.png"\; state="\{\{state\}\}">H</figure-callout>}}{d_{}^{}}\&times;(1+\frac{16-0.75H}{273})$

With reference to the design requirements of chimney, pull out the actual draft h of air duct _v=1.3h _L2-3

Can get by formula (2):

${1.3h}_{L2-3}=({\mathrm{\&rho;}}_a-{\mathrm{\&rho;}}_g)\mathrm{gH}-\frac{{\mathrm{\&rho;}}_g}{2}({\mathrm{<figure-callout\; id="3"\; label="V"\; filenames="HDA0000061517540000031.png"\; state="\{\{state\}\}">V</figure-callout>}}_3^2-{\mathrm{<figure-callout\; id="2"\; label="V"\; filenames="HDA0000061517540000031.png"\; state="\{\{state\}\}">V</figure-callout>}}_2^2)-h_{L2-3}$

$({\mathrm{\&rho;}}_a-{\mathrm{\&rho;}}_g)\mathrm{gH}-\frac{{\mathrm{\&rho;}}_g}{2}({\mathrm{<figure-callout\; id="3"\; label="V"\; filenames="HDA0000061517540000031.png"\; state="\{\{state\}\}">V</figure-callout>}}_3^2-{\mathrm{<figure-callout\; id="2"\; label="V"\; filenames="HDA0000061517540000031.png"\; state="\{\{state\}\}">V</figure-callout>}}_2^2)-{2.3h}_{L2-3}=0$

$(1.3082-1.2177)\&times;9.8\&times;H-\frac{1.2177}{2}(2^2-{0.89}^2)-2.3\&times;5.01\&times;{10}^{-4}\frac{\mathrm{<figure-callout\; id="3"\; label="H\; d"\; filenames="HDA0000061517540000031.png"\; state="\{\{state\}\}">H</figure-callout>}}{d_{}^{}}\&times;(1+\frac{16-.075H}{273})=0$

Arrangement draws H and d ₃Relation:

$\frac{H^2}{{\mathrm{<figure-callout\; id="3"\; label="d"\; filenames="HDA0000061517540000031.png"\; state="\{\{state\}\}">d</figure-callout>}}_3^2}-406.6\frac{\mathrm{<figure-callout\; id="3"\; label="H\; d"\; filenames="HDA0000061517540000031.png"\; state="\{\{state\}\}">H</figure-callout>}}{d_{}^{}}+2.956\&times;{10}^{5}H-6.5\&times;{10}^5=0---\left(4\right)$

If H=5m, substitution formula (4): d ₃=49mm

Can get outflow rate at last: $Q=\frac{{\mathrm{\&pi;<figure-callout\; id="3"\; label="d"\; filenames="HDA0000061517540000031.png"\; state="\{\{state\}\}">d</figure-callout>}}_3^2}{4}{13.6\mathrm{<figure-callout\; id="3"\; label="m"\; filenames="HDA0000061517540000031.png"\; state="\{\{state\}\}">m</figure-callout>}}^3/h$

See through above derivation, obtain data as can be known from test, this pulls out the airshed demand that wind flow can satisfy the co 2 removal device fully, realizes the technical purpose that the present invention will reach.Consider that blast cap 63 is installed at the top of pulling out air duct 60 or other increase the device of drafts, can further increase and pull out tolerance that when air draught airshed during greater than certain threshold value, the big I of airshed is further regulated by gas meter 62 and butterfly valve 61.

In sum, the advantage of breed water co 2 removal device of the present invention is, " wind-drawing effect " that promptly pull out air duct by its negative pressure air intake device can replace blower fan to blow to system, realization makes total system purpose of energy saving more, be installed in the blast cap that pulls out air duct top and can form bigger negative pressure draft at the top of pulling out air duct by wind-force, further strengthen described " wind-drawing effect " that pulls out air duct, increase and pull out air quantity, thereby fully satisfy the wind flow of pulling out of system's needs.

Although the preferable embodiment of the present invention has been described in explanation by way of example above, protection scope of the present invention is not limited in above-mentioned explanation, but is defined by all technical characterictics and the equivalent technologies feature thereof that appended claim provides.Persons skilled in the art are understandable that, under the essence and marrow prerequisite that does not deviate from the present invention and instructed, any modifications and variations may still drop within the protection domain of claim of the present invention.

Claims (10)

1. culture water co 2 removal device for one kind, comprise a tower body (10), at least one deck is located at the inner packing layer (20) of described tower body (10), one is communicated with the suction culvert (30) on described tower body (10) top, one is communicated with the outlet pipeline (40) of described tower body (10) bottom, one is located at the air outlet of described tower body (10) center of top, and one be located at the blast inlet (50) of described tower body (10) sidewall a little more than the water outlet of tower body wall, it is characterized in that also comprising

One negative pressure air intake device (60), the lower end of described negative pressure air intake device (60) is matched with in the air outlet at described tower body (10) top.

2. breed water co 2 removal device according to claim 1 is characterized in that also comprising:

One liquid distributor (70) is located at the position of the upper surface certain altitude of described tower body (10) inner distance packing layer (20).

3. breed water co 2 removal device according to claim 2, it is characterized in that described liquid distributor (70) is a disc type orifice flow type, the liquid level that the diameter of its percentage of open area and liquid distributing hole is designed to make liquid distributor (70) go up reservation is no less than 5 millimeters, percentage of open area is not higher than 10%, and the liquid distributing hole diameter is for being not less than 5 millimeters.

4. breed water co 2 removal device according to claim 1 it is characterized in that described suction culvert (30) is provided with a water feed apparatus (32) at described tower body (10) top, and described water feed apparatus (32) comprises the mouth spray of a plurality of distributions.

5. breed water co 2 removal device according to claim 1, the suction culvert (30) that it is characterized in that described breed water co 2 removal device is provided with a gate valve (33) in the position near its water-in, and is provided with a under meter (34) in a side of this gate valve (33).

6. breed water co 2 removal device according to claim 1 is characterized in that described negative pressure air intake device (60) is for being the air duct that pulls out of taper type.

7. breed water co 2 removal device according to claim 1 is characterized in that also being provided with on the described negative pressure air intake device (60) butterfly valve (61) and gas meter (62).

8. breed water co 2 removal device according to claim 1 is characterized in that the top of described negative pressure air intake device (60) also is provided with a blast cap (63).

9. breed water co 2 removal device according to claim 1, each layer that it is characterized in that described packing layer (20) comprises a back up pad (21) and filler (22), and the whole height of packing layer (20) is 1 meter to 1.5 meters, and wherein said filler (22) can be structured packing or dumped packing.

10. breed water co 2 removal device according to claim 9, the diameter ratio D/d that it is characterized in that the internal diameter of described tower body (10) and dumped packing (22) is greater than 8.

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