CN101687164B - Reactor, gas lift pump for a reactor vessel, and also method for deactivating a reactor - Google Patents
Reactor, gas lift pump for a reactor vessel, and also method for deactivating a reactor Download PDFInfo
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- CN101687164B CN101687164B CN2008800150035A CN200880015003A CN101687164B CN 101687164 B CN101687164 B CN 101687164B CN 2008800150035 A CN2008800150035 A CN 2008800150035A CN 200880015003 A CN200880015003 A CN 200880015003A CN 101687164 B CN101687164 B CN 101687164B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/18—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
- B01J8/20—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles with liquid as a fluidising medium
- B01J8/22—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles with liquid as a fluidising medium gas being introduced into the liquid
- B01J8/224—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles with liquid as a fluidising medium gas being introduced into the liquid the particles being subject to a circulatory movement
- B01J8/226—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles with liquid as a fluidising medium gas being introduced into the liquid the particles being subject to a circulatory movement internally, i.e. the particles rotate within the vessel
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/22—Activated sludge processes using circulation pipes
- C02F3/223—Activated sludge processes using circulation pipes using "air-lift"
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F2003/001—Biological treatment of water, waste water, or sewage using granular carriers or supports for the microorganisms
- C02F2003/003—Biological treatment of water, waste water, or sewage using granular carriers or supports for the microorganisms using activated carbon or the like
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/003—Coaxial constructions, e.g. a cartridge located coaxially within another
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The invention relates to a reactor and also to a gas lift pump for said reactor. The reactor comprises a reactor vessel provided with fluid containing therein a bed of particle material. The reactor further comprises the gas lift pump according to the invention, which is arranged in the reactor vessel. The gas lift pump comprises a vertical first tube (inner tube) having an open underside and upper side, and also a mouthpiece for blowing in a gas. The open underside of the first tube (inner tube) lies in the bed of particle material. The mouthpiece is provided at the underside of the first tube (inner tube) in such a way that blowing gas into the first tube (inner tube) brings about a reduction in the density of the fluid. The gas lift pump further comprises a second tube (outer tube) having an open underside and an open upper side. The underside of the second tube (outer tube) lies concentrically around the underside of the first tube (inner tube) to produce a concentric channel at this location.
Description
The present invention relates to a kind of reactor, comprising:
Provide the reactor vessel of fluid, this fluid comprises having proportion 〉=1.1kg/dm
3The bed of particle; With
Be arranged in the gas-lift pump in the described reactor vessel;
Described gas-lift pump comprises:
The first vertical pipe (inner tube) with lower end of the upside of opening and opening; With
Be used for being blown into the gas port such as the gas of air;
The lower end of the opening of described the first pipe (inner tube) is positioned at the bed of granular materials;
Described gas port is positioned at the lower end of described the first pipe (inner tube) when being blown into gas with box lunch, and the gas that is blown into described the first pipe (inner tube) reduces the fluid density in described the first pipe (inner tube).
Such reactor of air inclusion elevator pump is actually well-known.Such gas-lift pump is comprised of the pipe of the top and bottom with opening usually, at this lower end supply gas.The gas of supplying has reduced the density (perhaps, can say proportion) of the fluid in this pipe.After all, owing to supplied gas, the outside fluid of this pipe of the fluid ratio in this pipe contains more gas.This difference of managing inside and outside density has caused entering the upwelling of this pipe, is also referred to as to promote stream.This upwelling also allows the conveying at other particle of place, the bottom suction of this pipe.This is a kind of phenomenon of likewise known, and it is used in particular for: keep layer of sand when sand filter moves; Heavy particle in mixing and/or the stirring reactor vessel; The ventilation and/or mix aerobic and anaerobic reactor; Etc..Yet gas-lift pump neither be no problem.
A known problem following gas-lift pump and occur is, owing to thicker deposited particulate layer is positioned near the lower end of this pipe, so it starts difficulty.This thicker deposited particulate layer has hindered the suction of liquid, because liquid can not fully permeate this thicker deposited particulate layer.Then, this upwelling determines by the amount of the gas that provides basically, impels particle to move up although this can not or be merely able to (because with these Particle Phase ratios, this gas has relatively low density).A kind of known workaround of this problem is that several holes are provided in this pipe.The purpose in these holes is to improve the suction of liquid, because the distance between the upside of these holes and this stratum granulosum is shorter, so this is in the cards.Yet these holes must be by one by one " excavation ".Because particle is discharged from these holes and is pumped under the impact of the gas that is blown into this pipe, so should " excavation " occur gradually.Therefore, should " excavation " be quite time-consuming.In addition, the process of this " mining process " is not optimum usually.
The another kind of known problem that occurs in the gas-lift pump is that this pump is difficult to promote heavy particle, namely has the relatively particle of high mass density, and therefore not too suitable or be not suitable for for the bed that contains heavy particle.
The purpose of this invention is to provide the improved reactor of the reactor of the type of describing at piece of writing head place, wherein improved reactor allows more effective operation.
According to the present invention, this purpose is by providing the reactor that comprises following characteristics to realize:
Provide the reactor vessel of fluid, this fluid comprises having proportion 〉=1.05kg/dm
3The bed of particle, and
Be arranged in the gas-lift pump in this reactor vessel;
Described gas-lift pump comprises:
The first vertical pipe (inner tube) with lower end of the upside of opening and opening, and
Be used for being blown into the gas port such as the gas of air;
The lower end of the opening of described the first pipe (inner tube) is arranged in the bed of granular materials;
Described gas port is positioned at the lower end of described the first pipe (inner tube), when being blown into gas with box lunch, the gas that is blown into described the first pipe (inner tube) reduces the fluid density in described the first pipe (inner tube), and this gas-lift pump also comprises the second pipe (outer tube) of the lower end with opening;
The base section of described the second pipe (outer tube) with one heart around the base section of described the first pipe (inner tube) to form the coaxial channel around the base section of described the first pipe (inner tube);
Look up from Vertical Square, the upside of described the second pipe is lower than the upside of described the first pipe;
Described second the pipe (outer tube) upside be fluid opening and that be arranged in described reactor horizontal plane below; With
When the bed of described granular materials is in when static (, when described gas supply is not worked), the upside of described the second pipe (inner tube) is positioned at proportion 〉=1.05kg/dm
3The top of particle (particularly be positioned at and contain proportion 〉=1.1kg/dm
3The top of particle of particle, and more particularly be positioned at the top of the particle of the particle that contains proportion 〉=1.25kg/dm3).
Described first the pipe, also will be called inner tube in this application, at first it base section by the second pipe ring around, in this application described second the pipe also will be called outer tube.Described outer tube produces the coaxial spaces of lower opening in the base section of described inner tube.The upside of described outer tube be fluid opening and that be arranged in described reactor horizontal plane below.Therefore, described inner tube can be drawn into fluid from described coaxial spaces, the liquid that described fluid especially can or cannot mix with particle and/or gas.
During described reactor start-up, when starting beginning, the bed of described granular materials forms stratum granulosum deposition, static usually, described coaxial spaces allows substantially unhinderedly the bottom accommodating fluid to described gas-lift pump, because the upside of described the second pipe (outer tube) is still in the top of described stratum granulosum, perhaps be still at least proportion 〉=1.05kg/dm
3The top of particle, particularly be positioned at and contain proportion 〉=1.1kg/dm
3The top of particle of particle, more particularly be positioned at and contain proportion 〉=1.25kg/dm
3The top of particle of particle.When being in when static, can expect lighter particle from the particle of the top that is arranged in described second pipe (outer tube) upside.Such lighter particle has hindered bottom accommodating fluid to described gas-lift pump in relatively low degree.The liquid that is drawn into the bottom of described inner tube has been taken the particle of the bottom that is positioned at described outer tube away, because the bottom of described gas-lift pump has been hollowed out.Faster, the more reliable reactor start-up of this permission.(should be noted in the discussion above that and be in when static and during operation, the upside of described the second pipe (outer tube) also may be positioned at the top of described stratum granulosum when described reactor.)
Should be noted in the discussion above that with regard to gas lift mud (sludge) bed bioreactor described bed is usually initial fully by having such as so relatively hyperbaric particle such as brown coal particle, anthracite particle, float stone particle (proportion 〉=1.5kg/dm for example
3Particle) form.For 10 meters high reactors, described bed initially has for example height of 80cm.At described reactor between the operating period, living beings (biomass) will (can) be deposited on these particles.The result supplies at once when closing gas, and the height of described bed will increase, and for example be increased to 1.5 meters or higher, and the proportion of these particles (comprising described living beings) will reduce.Then these particles that contain the living beings at the top that is positioned at described bed can have less than 1.25kg/dm
3Perhaps even less than 1.05kg/dm
3Proportion.According to the present invention, when closing gas for seasonable, in this case, these lighter particles self are positioned at the top of described second pipe (outer tube) upside.
Yet in case start, even there is not Mining Problems between the starting period, the present invention also provides the main advantage of normal work period.
Because described inner tube can easily be drawn into liquid by described coaxial spaces, described liquid can or cannot mix with particle, so described gas-lift pump can upwards transmit larger and/or higher surging volume flow by described inner tube.This provides some advantages of normal work period.Described gas-lift pump:
Can produce higher output;
Can upwards transmit the particle with better quality density; With
Can during upwards transmitting, make these particles that are transmitted more mobile; This is favourable for the mixing of the purification of described particle or described particle.
Therefore described reactor vessel holds the bed of granular materials.The type that depends on the gas yield of described gas-lift pump and depend on bed and particle, in this case, these particles will not suspend or suspend hardly or suspend in larger or less degree.In situation about suspending, depend on these particles whether largely for suspending, the upside of described bed will be in higher level in described reactor operating period.When described reactor inactivation, the particle of these suspensions will deposit to form stratum granulosum deposition, static subsequently.If during operation these particles be not suspend or suspend hardly, for example have the situation of a lot of sand filters, during so in described reactor operating period and when described reactor inactivation, described upside will be located substantially on sustained height.In both of these case, when described reactor was not worked, the upside of described outer tube protruded from described bed.If these particles be not suspend or suspend hardly, in described reactor operating period, almost with regard to definition, the upside of described outer tube also will protrude from described bed so.In situation about suspending, whether the upside of described outer tube is also protruding the degree that will depend on that described outer tube protrudes above the described quiescent bed in described reactor operating period above the described liquefied bed.In a rear situation, be arranged in described liquefied bed and all be possible in the top that described reactor described upside of operating period is positioned at described (liquefaction) bed at the upside of described reactor described outer tube of operating period.
Since the particle that outer tube, therefore is positioned at described gas-lift pump bottom around the base section coaxial arrangement of described inner tube near the bottom of described gas-lift pump by equably suction.In this regard, described outer tube need to be all coaxially around described inner tube on its whole length, and perhaps the upside of the opening of described at least outer tube is not to extend coaxially around described inner tube.Yet, consider that for design described outer tube preferably extends around described inner tube coaxially on its whole length.
According to the present invention, for because upwards promoting the effect of stream effectively with in the described inner tube of particle suction, look up from Vertical Square, if the lower end of opening of described the first pipe (inner tube) be lower than described the second pipe (outer tube) opening the lower end be favourable.At place, the bottom of described inner tube, because described upwelling the and then liquid that extracts from described outer tube will more effectively transmit particle, because on horizontal direction, described outer tube does not cover the lower end of described inner tube fully but its part is exposed.
According to the present invention, in order to ensure, especially starting and normal work period, by described the second pipe (outer tube) suction fluid liquid especially effectively, it is favourable using following relation: 0.1 (D-d)≤Z≤0.4 (D-d), wherein d is the diameter of lower end of the opening of described the first pipe (inner tube), D is the diameter of lower end of the opening of described the second pipe (outer tube), and Z is from look up distance between the lower end of opening of the lower end of opening of described the first pipe (inner tube) and described the second pipe (outer tube) of Vertical Square.Especially, if the value of Z is approximately 0.2 (D-d), be favourable so in this case.
According to the present invention, can be drawn into by described outer tube in order to ensure the fluid of enough output especially liquid, it is favourable using following relation: 0.5D≤d≤0.7D, wherein d is the diameter of lower end of the opening of described the first pipe (inner tube), and D is the diameter of lower end of the opening of described the second pipe (outer tube).Especially, if the value of d is approximately 0.6D, be favourable so in this case.
According to the present invention, if described gas port is arranged on lower end following of described the first pipe (inner tube) and points to the inside of described the first pipe (inner tube), in order to during operation the gas of all suction is guided into described the first pipe (inner tube), then be favourable.This allows the resuspension that described gas flow just makes particle acquire a certain degree in the bottom of described gas-lift pump once activation by force between the starting period of described reactor.Guaranteed that also the gas that is blown into described coaxial spaces does not produce any (not expecting) lifting stream.
According to the present invention, in order to get rid of any risk of (not expecting) lifting stream in the described coaxial spaces, it is favourable being arranged on described gas port in described the first pipe (inner tube).So described gas port will be arranged on the inside of the base section of described the first pipe (inner tube).
According to the present invention, if in the wall of described the first pipe (inner tube), a distance, top of lower end at described the second pipe (outer tube), be arranged on described coaxial channel and described first and manage the one or more holes that produce the fluid connection between the inside of (inner tube), the excavation during the so described reactor start-up can further improve.By these holes, be possible from described coaxial channel withdrawn fluid especially liquid at the very start starting.In addition, help to improve upwards transfer capability during the normal operating that separates the startup stage of these Kong Zaiyu, thereby allow more easily upwards to transmit by described inner tube the particle of better quality density.
According to still another embodiment of the invention, these particles comprise one or more in the following particle:
Filter sand such as pomegranate sand and/or quartz sand;
Basalt;
Granule activated carbon;
Be positioned on the carrier or be not positioned at living beings on the carrier;
Crystal;
Mineral matter;
Brown coal;
Pellet;
Float stone;
Anthracite;
Etc..
According to the present invention, pomegranate sand can have from 0.6 to 3mm granularity, and proportion is approximately 4.1kg/dm
3And storage volume is approximately 2.3kg/dm
3According to the present invention, quartz sand can have from 0.6 to 3mm granularity, and proportion is approximately 2.5 to 2.6kg/dm
3And storage volume is approximately 1.5 to 1.6kg/dm
3
According to another embodiment, described fluid comprises water.
According to another aspect, the present invention relates to be used to the method that makes reactor inactivation of the present invention, wherein, in the first step that keeps the gas supply, at first described gas supply is decreased to certain level, so that these particles hinder the supply of liquid by described bed along the lower end of described the second pipe (outer tube); And in the second step after described first step, keep the gas supply of described level or the gas supply that keeps reduced levels, under the effect of described gas, substantially be discharged into described the first pipe (inner tube) from described the second pipe (outer tube) until be arranged in the particle of described the second pipe (outer tube); In the third step after described second step, close described gas supply.
During making in this way described reactor inactivation guarantee that described reactor restarts, the least possible particle is arranged in described outer tube, especially is located in the coaxial channel of bottom of described gas-lift pump.Why this situation realizes, is that described gas supply at first reduces because during inactivation, thereby these particle depositions are to form the bed of the bottom of substantially closing described gas-lift pump.This closing causes fluid still to exist but is not that the mode of very strong lifting stream is drawn in the described inner tube by described outer tube.This particle that causes conversely the fluid that is arranged in described outer tube in the mode of Fluid Circulation by the described outer release that is in control.Because in this case, protrude above described grain bed on the top of described outer tube, so be accompanied by described fluid and the new particle of suction will reduce and can all obtain getting rid of by described outer tube.
In this case, if continue second step until described the second pipe (outer tube) and described the first pipe (inner tube) are substantially devoid of particle then are particularly advantageous.
According to another aspect, the present invention relates to a kind of gas-lift pump of the reactor vessel be used to providing fluid, described fluid comprises the bed of granular materials, and described gas-lift pump comprises:
-vertically place and have the first pipe (inner tube) of the lower end of the upside of opening and opening when using; With
-for the gas port that is blown into such as the gas of air;
Described gas port is positioned at the lower end of described the first pipe (inner tube) when being blown into gas with box lunch, the gas that is blown into described the first pipe (inner tube) reduces the density of the fluid in described the first pipe (inner tube), upwards promotes stream thereby produce the fluid that enters described the first pipe (inner tube);
Described gas-lift pump also comprises the second pipe of the lower end with opening;
Look up from Vertical Square, the upside of described the second pipe is lower than the upside of described the first pipe;
The base section of described the second pipe (outer tube) with one heart around the base section of described the first pipe (inner tube) to form the coaxial channel around the base section of described the first pipe (inner tube); With
The top of described the second pipe (outer tube) is opening, in order to can be drawn into owing to the suction that upwards promotes stream by described the first pipe (inner tube) at the place, top of described the second pipe (outer tube) fluid.
The another embodiment of described gas-lift pump is described in claim 17 to 24.According to a third aspect of the invention we, according to reactor of the present invention, it is clear that the advantage of described gas-lift pump will become from above-described.
The embodiment that schematically shows below with reference to accompanying drawings is explained in more detail the present invention, wherein:
Fig. 1 is according to the present invention, the startup stage diagrammatic view of the first reactor when beginning;
The startup stage that Fig. 2 being late period corresponding diagrammatic view;
Fig. 3 is the corresponding views that the first reactor is in normal work stage;
Fig. 4 is the corresponding views that the first reactor is in the inactivation stage; With
Fig. 5 is at the diagrammatic view of the second reactor of normal work period according to the present invention.
Two kinds of different application of the present invention below will be described.The first use (Fig. 1-4) relate to such as by the applicant with brand name
The activation that is called airlift reactor of selling (in case the gas supply stops).The second is used the improvement relate to the gas-lift pump duration of work, thus since this improvement can be easily with the application of principle of gas-lift pump in the bed that comprises relatively heavier particle, for example in the sand-bed filter that comprises such as pomegranate sand.
According to the present invention, in Fig. 1 to 4, label 10 expressions the first reactor.This reactor vessel containing fluid, the upper surface of this fluid (being also referred to as liquid level) represents with label 18.This fluid comprises the bed with particle 17, and particle 17 schematically represents with triangle.This upside schematically represents with label 19.This first reactor is such class reactor, and namely the bed of particle is liquefied during operation in this first reactor.For example, the bed that namely comprises the living beings load bearing grain.
Gas-lift pump is arranged in reactor vessel 10.This gas-lift pump comprise inner tube 11 and around this inner tube and with the outer tube 12 of the coaxial placement of this inner tube.Inner tube 11 and outer tube 12 define coaxial channel 21 jointly.This coaxial channel 21 especially extends along the base section of inner tube 11.Look up from Vertical Square, the lower end 15 of outer tube 12 is higher than the lower end 14 of inner tube 11.Gas port 20 is positioned at the middle part of inner tube 11 belows, along this gas port 20 gas (being in this case air) is blown into.In the accompanying drawings, bubble schematically represents with circle, and represents with label 16.
Fig. 1 illustrates when this reactor inactivation and fluid and is in when static, and the bed precipitation of granular materials forms relatively closely grain bed.This precipitation, relative closely grain bed has stopped up the bottom of gas-lift pump.When this inactive state, the upper end of outer tube 12 is from this upside 19 protrusions.Then, gas for example air is blown into by gas port 20, and fluid especially liquid will be drawn into by the upper end of outer tube 12 in this coaxial channel, in order to come to be drawn into the inner tube 11 from the bottom of coaxial channel 21 by the lifting stream that produces in inner tube 11 inside.If there is not hole 13 on the sidewall of inner tube 11, so this situation only occurs along the bottom of the lower end 14 of inner tube 11.Yet, provide hole 13 to guarantee that fluid just can be upwards to promote the mode that flows unhinderedly is drawn into inner tube 11 by hole 13 (seeing the arrow α among Fig. 1) inside from the beginning.
Through after a while, this gas-lift pump will be hollowed out fully in the bottom, thereby flow also is drawn into (seeing the arrow β among Fig. 2) by the lower end 14 of inner tube 11 along the bottom.
Start further and continue, depend on the process that operates in this reactor, this grain bed will finally become suspension to a certain extent.Then the upside 19 of this bed rises and depends on especially described process, even can rise to lower end and the outer tube 12 that is higher than inner tube 11.This point as shown in Figure 3.In this state, this gas-lift pump also will be drawn into fluid, especially liquid by the bed (seeing the arrow γ among Fig. 3) of this granular materials.
If this reactor then must inactivation, so as the schematically illustrating of Fig. 4, this gas supply will at first drop to certain level so that the bed of this granular materials begins thickening, and wherein the upside 19 of this bed will descend usually.Therefore the result of thickening has been these Particle Blockings bottom of this gas-lift pump still can only be drawn into fluid by a coaxial channel that limits between outer tube 12 and inner tube 11, schematically show such as the arrow α among Fig. 4 and β.Owing in this case the gas supply is further kept the regular hour and also reduces simultaneously if appropriate this gas supply, so coaxial channel 21 contains relatively few particle 17.After all, the particle that is arranged in coaxial channel 21 will be extracted out from coaxial channel 21 and be discharged by inner tube 11.Therefore, when this reactor inactivation, coaxial channel 21 can hold particle hardly.When this allows to restart fluid is just unhinderedly offered inner tube 11 by this coaxial channel from beginning.
In order to further specify the present invention, define following size with reference to Fig. 1, be used for gas-lift pump constructed according to the invention:
The diameter d of inner tube (representing with cm) in general is 2 to 100cm;
In general the diameter D (representing with cm) of outer tube is d=0.6*D, is distributed in 0.5*D≤d≤0.7*D scope;
Distance X (representing with cm) between the upper end of described inner tube and the upper end of described outer tube is X=3* (D-d), is distributed in 2* (D-d)≤X≤4* (D-d) scope;
Between the lower end of described inner tube and the lower end of described outer tube is Z=0.2* (D-d) apart from Z (representing with cm), is distributed in 0.1* (D-d)≤Z≤0.4* (D-d) scope;
Distance Y (representing with cm) between the lower end of described inner tube and the bottom of described reactor is Y=0.33*d, is distributed in 0.1*d≤Y≤0.5*D scope.This distance can become greatly alternatively, although have subsequently the larger risk that sediment will be retained in this reactor bottom.
According to the present invention, Fig. 5 shows the second reactor 30.This is a kind of sand filter reactor.Described sand can comprise any suitable filter sand, although it comprises that especially its proportion is approximately 4.1kg/dm such as having from the such pomegranate sand of the pomegranate sand of 0.6-3mm granularity in this case
3And storage volume is approximately 2.3kg/dm
3With regard to the sand filter reactor, bed 31 is formed by layer of sand, and this layer of sand can be several meters, for example 3 to 4 meters thick, and this formation filter bed 31.Liquid to be clean usually provides in this filter bed and then upwards flows in order to filter simultaneously by this filter bed.Simultaneously, this filter bed self moves down in order to extract dirty sand at place, the bottom of this filter bed from this bed, and the sand that also usually will purify with the sand that returns purification to this is deposited on this top.In such filter bed, a small amount of or liquefaction occur, so the top 32 of this filter bed 31 not between the operating period, always is positioned at same level at this reactor operating period and this reactor basically.Gas-lift pump is applied to make this filter bed to move and purify these sand particles and is actually known.
Such as the gas-lift pump of the present invention of having discussed with reference to Fig. 1-4, be desirable for such filter bed reactor (according to the present invention, filter bed also can be comprised of the material except sand).With regard to the reactor 30 of Fig. 5, be used for gas-lift pump with label identical among Fig. 1-4.In addition, in this case, bubble also schematically represents with circle 16.The sand particle schematically represents with triangle 34 in Fig. 5.In order to prevent that the sand particle from leaving the coaxial spaces 21 that falls into behind the upper end of inner tube 11 between inner tube 11 and the outer tube 12, the position provides cap 33 below inner tube 11 upper ends but above outer tube 12 upper ends.Yet can there be cap yet.
According to the present invention, the advantage of this gas-lift pump of use is that this gas-lift pump can upwards transmit particle with high specific weight, have high yield and improved cleaning characteristics in the filter bed reactor such such as the sand filter bed reactor (do not have in this filter bed reactor or a small amount of liquefaction occurs).Yet, should be understood that, these advantages (upwards transmitting the cleaning characteristics/mixed characteristic of particle with high specific weight, high yield, improvement) also can be advantageously used in during the normal operating of reactor of other type, the reactor that for example bed of granular materials is carried out the liquefaction of larger or less degree.In addition, will be clear that also that according to the present invention, the use of this gas-lift pump causes the improvement of startup of the reactor of filter bed reactor and other type.
Fig. 1-5 illustrates the bottom that feed tube 20 terminates in this reactor, so that described gas port (gas flows into this reactor from this gas port) is arranged in this bottom in this case.Yet, will be clear that supply pipe 20 also can stretch out the bottom of this reactor, even extend in the bottom of inner tube.In a rear situation, then this gas port will be positioned at the inside of inner tube 11.This gas port for example can be positioned at from the lower end 14 following 50cm of inner tube to more than the lower end of inner tube 11 near the scope of 50cm; Especially, this gas port will be positioned at from the lower end 14 following 20cm of inner tube to more than the lower end of inner tube 11 near the scope of 20cm.
The tabulation of the label that uses
10=the first reactor;
11=the first pipe/inner tube;
12=the second pipe/outer tube;
Hole in the 13=inner tubal wall;
The lower end of 14=inner tube;
The lower end of 15=outer tube;
The 16=bubble;
The 17=particle;
The upper surface of 18=fluid surface/liquid side;
The upside of 19=bed;
The 20=gas port;
The 21=coaxial channel;
30=the second reactor;
31=bed/filter bed;
The upside of 32=bed 31;
The 33=cap;
34=sand particle;
α=by coaxial channel 21 and hole 13 suction fluids;
β=by coaxial channel 21 and along the bottom suction fluid of the lower end 14 of inner tube 11;
γ=by bed and along the bottom suction fluid of the lower end 14 of the lower end 15 of outer tube 12 and inner tube 11;
The diameter of d=inner tube 11 (representing with cm);
The diameter of D=outer tube 12 (representing with cm);
X=is from the upper end of outer tube 12 to the vertical range (representing with cm) of the upper end of inner tube 11;
Vertical range between the lower end 14 of Y=inner tube 11 and the bottom of reactor;
Vertical range (representing with cm) between the lower end 14 of Z=inner tube 11 and the lower end 15 of outer tube 12.
Claims (26)
1. a reactor (10,30) comprising:
Provide the reactor vessel of fluid, comprise having proportion 〉=1.05kg/dm in the described fluid
3The bed of particle (17,34); With
Be arranged in the gas-lift pump in the described reactor vessel;
Described gas-lift pump comprises:
Vertical first pipe (11) of lower end (14) with upside with opening of opening; With
Be used for being blown into the gas port (20) of gas (16);
The lower end (14) of the opening of described the first pipe (11) is positioned in the bed of particle (17,34) material;
Described gas port (20) is arranged on the bottom of described the first pipe (11), and when being blown into gas (16) with box lunch, the gas (16) that is blown into described the first pipe (11) causes the fluid density in described the first pipe (11) to reduce;
It is characterized in that:
Described gas-lift pump also comprises the second pipe (12) of the lower end (15) with opening; The base section of described the second pipe (12) with one heart around the base section of described the first pipe (11) to form the coaxial channel (21) around the base section of described the first pipe (11);
From vertical direction, the upside of described the second pipe (12) is lower than the upside of described the first pipe (11);
Described second the pipe (12) upside be fluid opening and that be arranged in described reactor horizontal plane below; With
When the bed of particle (17,34) material is in when static, the upside of described the second pipe (12) is positioned at proportion 〉=1.05kg/dm
3The top of particle (17,34),
Wherein, from vertical direction, the lower end (14) of the opening of described the first pipe (11) is lower than the lower end (15) of the opening of described the second pipe (12).
2. reactor according to claim 1 (10,30), wherein, described gas is air.
3. reactor (10 according to claim 1,30), wherein, d is the diameter of the base section of described the first pipe (11), D is the diameter of base section of described the second pipe (12), and Z sees the distance between the lower end (15) of opening of the lower end (14) of opening of described the first pipe (11) and described the second pipe (12) and is suitable for following formula from vertical direction: 0.1 (D-d)≤Z≤0.4 (D-d).
4. reactor according to claim 3 (10,30), wherein, the value of Z is 0.2 (D-d).
5. reactor according to claim 1 (10,30), wherein, d is the diameter of the base section of described the first pipe (11), D is the diameter of the base section of described the second pipe (12), and is applicable to following formula: 0.5D≤d≤0.7D.
6. reactor according to claim 5 (10,30), wherein, the value of d is 0.6D.
7. reactor according to claim 1 (10,30), wherein, d is the diameter of the base section of described the first pipe (11), and is applicable to following relation: 2cm≤d≤100cm.
8. reactor (10 according to claim 1,30), wherein, described gas port (20) be arranged on described first the pipe (11) opening lower end (14) the below and point to described first the pipe (11) inside so that during operation all gases that are blown into (16) all be drawn towards described first the pipe (11).
9. reactor according to claim 1 (10,30), wherein, described gas port is positioned at described the first pipe (11).
10. reactor (10 according to claim 1,30), wherein, in the wall of described the first pipe (11), in a distance, top of lower end (15) of described the second pipe (12), be provided with the one or more holes (13) that between the inside of described coaxial channel (21) and described the first pipe (11), produce the fluid connection.
11. reactor according to claim 1 (10,30), wherein, described particle (17,34) comprises one or more in the following particle (17,34):
Filter sand;
Basalt;
Granule activated carbon;
Be positioned on the carrier or be not positioned at living beings on the carrier;
Crystal;
Mineral matter;
Brown coal;
Pellet;
Float stone;
Anthracite.
12. reactor according to claim 11 (10,30), wherein, described filter sand is pomegranate sand and/or quartz sand.
13. reactor according to claim 1 (10,30), wherein, described fluid comprises water.
14. reactor according to claim 1 (10,30), wherein, described bed is filter.
15. reactor according to claim 14 (10,30), wherein, described filter is sand filter.
16. reactor according to claim 1 (10,30), wherein, the length of described the second pipe (12) is so that its upside is positioned at the top of described bed in described reactor (10,30) operating period.
17. one kind makes such as each described reactor (10 in the claim 1 to 16,30) method of inactivation, wherein, in the first step that keeps the gas supply, at first described gas supply is decreased to certain level, so that described particle (17,34) hinders the supply of fluid by described bed along the lower end (15) of described the second pipe (12); In the second step after described first step, keep the gas supply of described level or the gas supply that keeps reduced levels, under the effect of described gas (16), substantially be discharged into described the first pipe (11) from described the second pipe (12) until be arranged in the particle (17,34) of described the second pipe (12); In the third step after described second step, close described gas supply.
18. method according to claim 17, wherein, described second step is proceeded until described the second pipe (12) and described the first pipe (11) do not contain particle (17,34) substantially.
19. a gas-lift pump that is used for providing the reactor vessel of fluid comprises the bed of granular materials in the described fluid, described gas-lift pump comprises:
-vertically place and have first pipe (11) of lower end (14) of upside and the opening of opening when using; With
-for the gas port (20) that is blown into gas (16);
Described gas port (20) be arranged on described first the pipe (11) below, so that during use when being blown into gas (16), the gas (16) that is blown into described the first pipe (11) reduces the fluid density in described the first pipe (11), upwards promotes stream thereby produce the fluid that enters described the first pipe (11);
It is characterized in that:
Described gas-lift pump also comprises the second pipe (12) of the lower end (15) with opening;
From vertical direction, the upside of described the second pipe (12) is lower than the upside of described the first pipe (11);
The base section of described the second pipe (12) with one heart around the base section of described the first pipe (11) to form the coaxial channel (21) around the base section of described the first pipe (11); With
The upside of described the second pipe (12) is opening, in order to can be drawn into owing to the suction that upwards promotes stream that flows to described the first pipe (11) at the upside place fluid of described the second pipe (12),
Wherein, from vertical direction, the lower end (14) of the opening of described the first pipe (11) is lower than the lower end (15) of the opening of described the second pipe (12).
20. gas-lift pump according to claim 19, wherein, described gas is air.
21. gas-lift pump according to claim 19, wherein, d is the diameter of the base section of described the first pipe (11), and D is the diameter of the base section of described the second pipe (12), and is applicable to following relation: 0.5D≤d≤0.7D.
22. gas-lift pump according to claim 21, wherein, the value apart from Z between the lower end of described inner tube and the lower end of described outer tube is 0.2 (D-d).
23. gas-lift pump according to claim 21, wherein, the value of d is 0.6D.
24. gas-lift pump according to claim 19, wherein, d is the diameter of the base section of described the first pipe (11), and is applicable to following relation: 2cm≤d≤100cm.
25. gas-lift pump according to claim 19, wherein, described gas port (20) be arranged on described first the pipe (11) opening lower end (14) the below and point to described first the pipe (11) inside so that during operation all gases that are blown into (16) all be drawn towards described first the pipe (11).
26. gas-lift pump according to claim 19, wherein, in the wall of described the first pipe (11), in a distance, top of lower end (15) of described the second pipe (12), be provided with the one or more holes (13) that between the inside of described coaxial channel (21) and described the first pipe (11), produce the fluid connection.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL2000637A NL2000637C2 (en) | 2007-05-08 | 2007-05-08 | Reactor, gas lift pump for in a reactor vessel, and method for switching off a reactor. |
| NL2000637 | 2007-05-08 | ||
| PCT/NL2008/050262 WO2008136665A1 (en) | 2007-05-08 | 2008-04-28 | Reactor, gas lift pump for a reactor vessel, and also method for deactivating a reactor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101687164A CN101687164A (en) | 2010-03-31 |
| CN101687164B true CN101687164B (en) | 2013-03-20 |
Family
ID=38962620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008800150035A Active CN101687164B (en) | 2007-05-08 | 2008-04-28 | Reactor, gas lift pump for a reactor vessel, and also method for deactivating a reactor |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN101687164B (en) |
| NL (1) | NL2000637C2 (en) |
| WO (1) | WO2008136665A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH655083A5 (en) * | 1981-06-29 | 1986-03-27 | Sulzer Ag | Reaction vessel for biological waste-water purification plants |
| DE3916520A1 (en) * | 1989-05-20 | 1990-11-22 | Zimmer Erich Helmut | Biological clarifier vessel using aerobic-selective principle - comprises insulated vertical cylindrical vessel divided into concentric zones for aeration, clarification and sedimentation |
| US5817702A (en) * | 1997-05-02 | 1998-10-06 | Exxon Research And Engineering Company | Hydrocarbon synthesis catalyst slurry rejuvenation with gas disengagement |
| CN1460650A (en) * | 2003-05-19 | 2003-12-10 | 清华大学 | Aerobic-anaerobic air float separation biological fluidized composite reactor |
| US20050242450A1 (en) * | 2004-04-22 | 2005-11-03 | A. J. Witheridge | Aeration of wastewater ponds using airlift pumps |
-
2007
- 2007-05-08 NL NL2000637A patent/NL2000637C2/en not_active IP Right Cessation
-
2008
- 2008-04-28 WO PCT/NL2008/050262 patent/WO2008136665A1/en active Application Filing
- 2008-04-28 CN CN2008800150035A patent/CN101687164B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH655083A5 (en) * | 1981-06-29 | 1986-03-27 | Sulzer Ag | Reaction vessel for biological waste-water purification plants |
| DE3916520A1 (en) * | 1989-05-20 | 1990-11-22 | Zimmer Erich Helmut | Biological clarifier vessel using aerobic-selective principle - comprises insulated vertical cylindrical vessel divided into concentric zones for aeration, clarification and sedimentation |
| US5817702A (en) * | 1997-05-02 | 1998-10-06 | Exxon Research And Engineering Company | Hydrocarbon synthesis catalyst slurry rejuvenation with gas disengagement |
| CN1460650A (en) * | 2003-05-19 | 2003-12-10 | 清华大学 | Aerobic-anaerobic air float separation biological fluidized composite reactor |
| US20050242450A1 (en) * | 2004-04-22 | 2005-11-03 | A. J. Witheridge | Aeration of wastewater ponds using airlift pumps |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101687164A (en) | 2010-03-31 |
| WO2008136665A1 (en) | 2008-11-13 |
| NL2000637C2 (en) | 2008-11-11 |
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