A kind of compound efficient wet scrubber and dust collecting process thereof
Technical field
The invention belongs to flue gas ash removal technical field, be specifically related to a kind of compound efficient wet scrubber and dedusting work thereof
Skill.
Background technology
Along with developing rapidly of industry, the discharge of volume of smoke, environment is caused serious pollution, and affects the mankind
Existence healthy.Existing wet scrubber utilizes the inertial collision effect of water droplet and flue dust and immixture to make soot dust granule by water
Stream is taken away.Thus reach the purpose of dedusting.Due to existing wet scrubber, to there is gas-to-liquid contact undercompounding, time of contact short
Etc. problem so that cleaner unit efficiency of dust collection is low, it is the most notable to improve environmental effect.
Summary of the invention
It is an object of the invention to overcome deficiency of the prior art to provide a kind of simple in construction, reasonable in design, increase
Gas-liquid contact time, enhance dust removing effects, there is a kind of compound efficient wet type that the suitability is strong and efficiency of dust collection is high remove
Dirt device and dust collecting process thereof.
The object of the present invention is achieved like this: includes the air-introduced machine being connected with boiler smoke discharge tube, and air-introduced machine leads to
The lower gas import of the first import and wet scrubber of crossing venturi is connected, and described wet scrubber includes wet scrubber
Cylinder, the top of wet scrubber cylinder is provided with chimney, if the interior middle part of wet scrubber cylinder is provided with dried layer shower, some
The bottom of layer shower is sequentially provided with gas distributor and covering plate, is provided with flue gas between described gas distributor and covering plate
Pipe, the position that the bottom of described covering plate is corresponding with the lower gas import of wet scrubber is provided with two eddy current types and removes
Dirt plate, after assembling, forms gas channel, described gas channel one end and wet scrubber between two eddy current type dedusting plates
Lower gas import is connected, and the other end is connected with fume pipe;If the second of the inlet of dried layer shower and venturi enters
Mouth is connected with the bottom liquid outlet of sedimentation tank by water circulating pump respectively, and the bottom liquid inlet mouth of sedimentation tank is removed with wet type by pipeline
First liquid outlet of dirt device is connected with the second liquid outlet of wet scrubber, and the first liquid outlet of described wet scrubber is arranged on
The bottom of wet scrubber cylinder, the second liquid outlet of described wet scrubber is arranged on the top of covering plate.
Preferably, described fume pipe inwall is provided with several dust boards.
Preferably, if described dried layer shower is three layers.
Preferably, the material of said two eddy current type dedusting plate is rustless steel.
The dust collecting process of a kind of compound efficient wet scrubber, comprises the steps:
Step one: containing dust concentration in boiler smoke discharge tube is 700~1000mg/m3Flue gas pass through air-introduced machine
The first import with venturi enters in venturi;The flow of the flue gas of described entrance venturi is 200000m3/ h, temperature is
130~160 DEG C;Being mainly composed of of dust in flue gas: Al2O3, Fe2O3, SiO2, CaO;Wherein, in dust, particle diameter is less than or equal to
The dust of 10 μm accounts for the ratio of total dust: 75~80%, and the ratio that particle diameter accounts for total dust more than the dust of 10 μm is:
20%~25%;
Step 2: if the alkali liquor in sedimentation tank is respectively enterd in dried layer shower and venturi by water circulating pump;
Step 3: in described step one, flow is 200000m3/ h, temperature is 130 DEG C~the flue gas of 160 DEG C and step 2
Described in alkali liquor be sufficiently mixed in venturi after under centrifugal action, the most tangential entrance wet scrubber cylinder
In;Described is tangentially along the circumferential direction, i.e. vertical with wet scrubber cylinder radius direction;
Step 4: flue gas and alkali liquor after being sufficiently mixed described in step 3 enter in wet scrubber cylinder, due to whirlpool
Streaming dedusting plate is arc-shaped structure, and flue gas and alkali liquor after being sufficiently mixed produce vortex, air-flow and air-flow, air-flow and eddy current type
After dedusting plate mutually clashes into, the particle diameter of removing 90%~95% is less than more than 10 μm dust, the particle diameter of removing 35%~40%
In 10 μm dust, the flue gas after removing dust is entered in fume pipe by gas channel;
Step 5: enter the dust board in fume pipe of the flue gas after the removing dust of fume pipe described in step 4 and stop
Formula physics dedusting, can remove the dust of 5%~10% in the flue gas after dedusting by blocking type physics dedusting;
Step 6: on being continued after gas distributor by the flue gas after blocking type physics dedusting described in step 5
If rising the flow with the ejection of dried layer shower is 30~50m3The alkali liquor of/h is fully contacted, thus removes in flue gas 45~50%
Dust, the flue gas after dedusting is discharged by chimney;Drop to the absorbing liquid after dedusting and wet scrubber cylinder on covering plate
Through the precipitation of sedimentation tank after bottom body, absorbing liquid after dedusting is converged, upper strata clear water is continuing with entering literary composition mound after water circulating pump
In the second import in and if dried layer shower.
Preferably, the alkali liquor in sedimentation tank described in described step 2 is one of sodium hydroxide solution or ammonia spirit.
If the present invention combines by arranging eddy current type dedusting plate dried layer shower, it is possible to realize the purpose of classification dedusting,
In mid portion fume pipe, dust board enhances dust removing effects, finally can make the overall dust removal efficiency of the present invention be 90%~
95%, after dedusting, absorbing liquid upper strata alkali liquor reusable edible after sedimentation tank precipitates, has investment cost low, reasonable in design,
Simple in construction, the suitability is strong, dedusting and desulphurization integrated advantage.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Detailed description of the invention
In order to be more clearly understood from the technical characteristic of the present invention, purpose and effect, now comparison accompanying drawing illustrates this
Bright detailed description of the invention, the most identical label represents identical parts.For making simplified form, in each figure the most schematically
Indicate and invent relevant part, they do not represent its practical structures as product.
As it is shown in figure 1, the present invention includes the air-introduced machine 3 being connected with boiler smoke discharge tube, air-introduced machine 3 passes through venturi
First import of 2 is connected with the lower gas import of wet scrubber, and described wet scrubber includes wet scrubber cylinder 1,
The top of wet scrubber cylinder 1 is provided with chimney 12, if the interior middle part of wet scrubber cylinder 1 is provided with dried layer shower 6, some
The bottom of layer shower 6 is sequentially provided with gas distributor 10 and covering plate 8, sets between described gas distributor 10 and covering plate 8
There is fume pipe 9, the position that the bottom of described covering plate 8 is corresponding with the lower gas import of wet scrubber is provided with two
Eddy current type dedusting plate 7, after assembling, forms gas channel between two eddy current type dedusting plates 7, described gas channel one end is with wet
The lower gas import of formula cleaner unit is connected, and the other end is connected with fume pipe 9;If the inlet of dried layer shower 6 and literary composition
In mound, second import of 2 is connected with the bottom liquid outlet of sedimentation tank 4 by water circulating pump 5 respectively, the bottom liquid inlet mouth of sedimentation tank 4
It is connected with the first liquid outlet of wet scrubber and the second liquid outlet of wet scrubber by pipeline, described wet scrubber
First liquid outlet is arranged on the bottom of wet scrubber cylinder 1, and the second liquid outlet of described wet scrubber is arranged on covering plate 8
Top.Described fume pipe 9 inwall is provided with several dust boards 11.If described dried layer shower 6 is three layers.Said two whirlpool
The material of streaming dedusting plate 7 is rustless steel.
The dust collecting process of a kind of compound efficient wet scrubber, this dust collecting process comprises the steps:
Step one: containing dust concentration in boiler smoke discharge tube is 700~1000mg/m3Flue gas pass through air-introduced machine
3 and the first import of venturi 2 enter in venturi 2;The flow of the flue gas of described entrance venturi 2 is 200000m3/ h, temperature
Degree is 130~160 DEG C;Being mainly composed of of dust in flue gas: Al2O3, Fe2O3, SiO2, CaO;Wherein, in dust, particle diameter is less than
The ratio accounting for total dust equal to the dust of 10 μm is: 75~80%, and particle diameter accounts for the ratio of total dust more than the dust of 10 μm
For: 20%~25%;
Step 2: if the alkali liquor in sedimentation tank 4 is respectively enterd in dried layer shower 6 and venturi 2 by water circulating pump 5;
Step 3: in described step one, flow is 200000m3/ h, temperature is 130 DEG C~the flue gas of 160 DEG C and step 2
Described in alkali liquor be sufficiently mixed in venturi 2 after under centrifugal action, the most tangential entrance wet scrubber cylinder 1
In;Described is tangentially along the circumferential direction, i.e. vertical with wet scrubber cylinder 1 radius direction;
Step 4: flue gas and alkali liquor after being sufficiently mixed described in step 3 enter in wet scrubber cylinder 1, due to whirlpool
Streaming dedusting plate 7 is arc-shaped structure, and flue gas and alkali liquor after being sufficiently mixed produce vortex, air-flow and air-flow, air-flow and eddy current
After formula dedusting plate 7 mutually clashes into, the particle diameter of removing 90%~95% is less than more than 10 μm dust, the particle diameter of removing 35%~40%
Equal to 10 μm dust, the flue gas after removing dust is entered in fume pipe 9 by gas channel;
Step 5: enter the flue gas dust board 11 in fume pipe 9 after the removing dust of fume pipe 9 described in step 4 and carry out
Blocking type physics dedusting, can remove the dust of 5%~10% in the flue gas after dedusting by blocking type physics dedusting;
Step 6: being continued after gas distributor 10 by the flue gas after blocking type physics dedusting described in step 5
If rising the flow with dried layer shower 6 ejection is 30~50m3The alkali liquor of/h is fully contacted, thus remove in flue gas 45~
The dust of 50%, the flue gas after dedusting is discharged by chimney 12;Drop to the absorbing liquid after dedusting and wet type on covering plate 8
Through the precipitation of sedimentation tank 4 after bottom cleaner unit cylinder 1, absorbing liquid after dedusting is converged, upper strata clear water continues after water circulating pump 5
If in using the second import and the dried layer shower 6 that enter venturi 2.Described in described step 2, the alkali liquor in sedimentation tank 4 is
One of sodium hydroxide solution or ammonia spirit.
The entrance that flue gas in the present invention and alkali liquor are the most tangential under centrifugal action after being sufficiently mixed in venturi 2
In wet scrubber cylinder 1, and producing vortex, air-flow and air-flow, air-flow mutually clash into eddy current type dedusting plate 7 and carry out dedusting,
Above-mentioned dedusting method adds gas-liquid contact time, enhances dust removing effects;Enter the flue gas of fume pipe 9 in fume pipe 9
Dust board 11 carries out blocking type physics dedusting, if abundant with the alkali liquor of dried layer shower 6 ejection after blocking type physics dedusting
Contact carries out further dedusting, overall dust removal efficiency finally can be made to reach 90%~95%, enable the flue gas of discharge to meet state
The relevant regulations of family.Technical scheme has dedusting and desulphurization integrated feature, and overall technical scheme has structure
Simply, reasonable in design, the suitability is strong and efficiency of dust collection is high advantage.
For the more detailed explanation present invention, in conjunction with embodiment, the present invention is further elaborated.Specific embodiment
As follows:
Embodiment one
The dust collecting process of a kind of compound efficient wet scrubber, this dust collecting process comprises the steps:
Step one: containing dust concentration in boiler smoke discharge tube is 700mg/m3Flue gas by air-introduced machine 3 and literary composition
In mound, first import of 2 enters in venturi 2;The flow of the flue gas of described entrance venturi 2 is 200000m3/ h, temperature is
130℃;Being mainly composed of of dust in flue gas: Al2O3, Fe2O3, SiO2, CaO;Wherein, in dust, particle diameter is less than or equal to 10 μm
Dust accounts for the ratio of total dust: 75%, and the ratio that particle diameter accounts for total dust more than the dust of 10 μm is: 25%;
Step 2: if the alkali liquor in sedimentation tank 4 is respectively enterd in dried layer shower 6 and venturi 2 by water circulating pump 5;
Step 3: in described step one, flow is 200000m3/ h, temperature is described in flue gas and the step 2 of 130 DEG C
Alkali liquor be sufficiently mixed in venturi 2 after under centrifugal action, in the most tangential entrance wet scrubber cylinder 1;Described
Tangential is along the circumferential direction, i.e. vertical with wet scrubber cylinder 1 radius direction;
Step 4: flue gas and alkali liquor after being sufficiently mixed described in step 3 enter in wet scrubber cylinder 1, due to whirlpool
Streaming dedusting plate 7 is arc-shaped structure, and flue gas and alkali liquor after being sufficiently mixed produce vortex, air-flow and air-flow, air-flow and eddy current
After formula dedusting plate 7 mutually clashes into, the particle diameter of removing 90%~95% is less than more than 10 μm dust, the particle diameter of removing 35%~40%
Equal to 10 μm dust, the flue gas after removing dust is entered in fume pipe 9 by gas channel;
Step 5: enter the flue gas dust board 11 in fume pipe 9 after the removing dust of fume pipe 9 described in step 4 and carry out
Blocking type physics dedusting, can remove the dust of 5%~10% in the flue gas after dedusting by blocking type physics dedusting;
Step 6: being continued after gas distributor 10 by the flue gas after blocking type physics dedusting described in step 5
If rising the flow with dried layer shower 6 ejection is 30~50m3The alkali liquor of/h is fully contacted, thus remove in flue gas 45~
The dust of 50%, the flue gas after dedusting is discharged by chimney 12;Drop to the absorbing liquid after dedusting and wet type on covering plate 8
Through the precipitation of sedimentation tank 4 after bottom cleaner unit cylinder 1, absorbing liquid after dedusting is converged, upper strata clear water continues after water circulating pump 5
If in using the second import and the dried layer shower 6 that enter venturi 2.Described in described step 2, the alkali liquor in sedimentation tank 4 is
Sodium hydroxide solution.
Embodiment two
The dust collecting process of a kind of compound efficient wet scrubber, this dust collecting process comprises the steps:
Step one: containing dust concentration in boiler smoke discharge tube is 1000mg/m3Flue gas by air-introduced machine 3 and literary composition
In mound, first import of 2 enters in venturi 2;The flow of the flue gas of described entrance venturi 2 is 200000m3/ h, temperature is
160℃;Being mainly composed of of dust in flue gas: Al2O3, Fe2O3, SiO2, CaO;Wherein, in dust, particle diameter is less than or equal to 10 μm
Dust accounts for the ratio of total dust: 80%, and the ratio that particle diameter accounts for total dust more than the dust of 10 μm is: 20%;
Step 2: if the alkali liquor in sedimentation tank 4 is respectively enterd in dried layer shower 6 and venturi 2 by water circulating pump 5;
Step 3: in described step one, flow is 200000m3/ h, temperature is described in flue gas and the step 2 of 160 DEG C
Alkali liquor be sufficiently mixed in venturi 2 after under centrifugal action, in the most tangential entrance wet scrubber cylinder 1;Described
Tangential is along the circumferential direction, i.e. vertical with wet scrubber cylinder 1 radius direction;
Step 4: flue gas and alkali liquor after being sufficiently mixed described in step 3 enter in wet scrubber cylinder 1, due to whirlpool
Streaming dedusting plate 7 is arc-shaped structure, and flue gas and alkali liquor after being sufficiently mixed produce vortex, air-flow and air-flow, air-flow and eddy current
After formula dedusting plate 7 mutually clashes into, the particle diameter of removing 90%~95% is less than more than 10 μm dust, the particle diameter of removing 35%~40%
Equal to 10 μm dust, the flue gas after removing dust is entered in fume pipe 9 by gas channel;
Step 5: enter the flue gas dust board 11 in fume pipe 9 after the removing dust of fume pipe 9 described in step 4 and carry out
Blocking type physics dedusting, can remove the dust of 5%~10% in the flue gas after dedusting by blocking type physics dedusting;
Step 6: being continued after gas distributor 10 by the flue gas after blocking type physics dedusting described in step 5
If rising the flow with dried layer shower 6 ejection is 30~50m3The alkali liquor of/h is fully contacted, thus remove in flue gas 45~
The dust of 50%, the flue gas after dedusting is discharged by chimney 12;Drop to the absorbing liquid after dedusting and wet type on covering plate 8
Through the precipitation of sedimentation tank 4 after bottom cleaner unit cylinder 1, absorbing liquid after dedusting is converged, upper strata clear water continues after water circulating pump 5
If in using the second import and the dried layer shower 6 that enter venturi 2.Described in described step 2, the alkali liquor in sedimentation tank 4 is
Ammonia spirit.
Embodiment three
The dust collecting process of a kind of compound efficient wet scrubber, this dust collecting process comprises the steps:
Step one: containing dust concentration in boiler smoke discharge tube is 850mg/m3Flue gas by air-introduced machine 3 and literary composition
In mound, first import of 2 enters in venturi 2;The flow of the flue gas of described entrance venturi 2 is 200000m3/ h, temperature is
145℃;Being mainly composed of of dust in flue gas: Al2O3, Fe2O3, SiO2, CaO;Wherein, in dust, particle diameter is less than or equal to 10 μm
Dust accounts for the ratio of total dust: 77.5%, and the ratio that particle diameter accounts for total dust more than the dust of 10 μm is: 22.5%;
Step 2: if the alkali liquor in sedimentation tank 4 is respectively enterd in dried layer shower 6 and venturi 2 by water circulating pump 5;
Step 3: in described step one, flow is 200000m3/ h, temperature is described in flue gas and the step 2 of 145 DEG C
Alkali liquor be sufficiently mixed in venturi 2 after under centrifugal action, in the most tangential entrance wet scrubber cylinder 1;Described
Tangential is along the circumferential direction, i.e. vertical with wet scrubber cylinder 1 radius direction;
Step 4: flue gas and alkali liquor after being sufficiently mixed described in step 3 enter in wet scrubber cylinder 1, due to whirlpool
Streaming dedusting plate 7 is arc-shaped structure, and flue gas and alkali liquor after being sufficiently mixed produce vortex, air-flow and air-flow, air-flow and eddy current
After formula dedusting plate 7 mutually clashes into, the particle diameter of removing 90%~95% is less than more than 10 μm dust, the particle diameter of removing 35%~40%
Equal to 10 μm dust, the flue gas after removing dust is entered in fume pipe 9 by gas channel;
Step 5: enter the flue gas dust board 11 in fume pipe 9 after the removing dust of fume pipe 9 described in step 4 and carry out
Blocking type physics dedusting, can remove the dust of 5%~10% in the flue gas after dedusting by blocking type physics dedusting;
Step 6: being continued after gas distributor 10 by the flue gas after blocking type physics dedusting described in step 5
If rising the flow with dried layer shower 6 ejection is 30~50m3The alkali liquor of/h is fully contacted, thus remove in flue gas 45~
The dust of 50%, the flue gas after dedusting is discharged by chimney 12;Drop to the absorbing liquid after dedusting and wet type on covering plate 8
Through the precipitation of sedimentation tank 4 after bottom cleaner unit cylinder 1, absorbing liquid after dedusting is converged, upper strata clear water continues after water circulating pump 5
If in using the second import and the dried layer shower 6 that enter venturi 2.Described in described step 2, the alkali liquor in sedimentation tank 4 is
Ammonia spirit.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " arranges ", " pacifies
Dress " etc. should be interpreted broadly, connect for example, it may be fixing, be integrally connected, it is also possible to be to removably connect;Can also be
The connection of two element internals;Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, common for this area
For technical staff, above-mentioned term concrete meaning in the present invention can be understood as the case may be.Foregoing detailed description
Being only for the illustrating of feasibility embodiment of the present invention, they also are not used to limit the scope of the invention,
All made without departing from skill of the present invention spirit equivalent implementations, change and transformation should be included in protection scope of the present invention
Within.