A kind of compound efficient wet scrubber and its dust collecting process
Technical field
The invention belongs to flue gas ash removal technical fields, and in particular to a kind of compound efficient wet scrubber and its dedusting work
Skill.
Background technique
With the rapid development of industry, the discharge of volume of smoke causes serious pollution to environment, and affects the mankind
Existence health.Existing wet scrubber makes soot dust granule by water using the effect of the inertial collision of water droplet and flue dust and immixture
Stream is taken away.To achieve the purpose that dedusting.Since there are gas-liquid contact undercompounding, time of contact are short for existing wet scrubber
The problems such as, so that deduster efficiency of dust collection is low, it is not significant to improve environmental effect.
Summary of the invention
A kind of simple structure and reasonable design, increase are provided it is an object of the invention to overcome in the prior art insufficient
Gas-liquid contact time, enhance dust removing effects, a kind of compound efficient wet type with strong applicability and high dust collection efficiency removes
Dirt device and its dust collecting process.
The object of the present invention is achieved like this: including the air-introduced machine being connected with boiler smoke discharge tube, air-introduced machine is logical
The first import for crossing venturi is connected with the lower gas import of wet scrubber, and the wet scrubber includes wet scrubber
Cylinder, the top of wet scrubber cylinder are equipped with chimney, and the interior middle part of wet scrubber cylinder is equipped with several layers spray tube, several
The lower part of layer spray tube is successively arranged gas distributor and covering plate, and flue gas is equipped between the gas distributor and covering plate
Installation is removed there are two eddy current type on pipe, the lower part of the covering plate and the corresponding position of the lower gas import of wet scrubber
Dirt plate after assembly, forms airflow channel between two eddy current type dedusting plates, described airflow channel one end and wet scrubber
Lower gas import is connected, and the other end is connected with fume pipe;The second of the inlet of several layers spray tube and venturi into
Mouth is connected by water circulating pump with the lower part liquid outlet of sedimentation basin respectively, and the bottom liquid inlet mouth of sedimentation basin is removed by pipeline and wet type
First liquid outlet of dirt device is connected with the second liquid outlet of wet scrubber, and the first liquid outlet setting of the wet scrubber exists
The top of covering plate is arranged in the lower part of wet scrubber cylinder, the second liquid outlet of the wet scrubber.
Preferably, the flue gas inside pipe wall is equipped with several dust boards.
Preferably, the several layers spray tube is three layers.
Preferably, the material of described two eddy current type dedusting plates is stainless steel.
A kind of dust collecting process of compound efficient wet scrubber, includes the following steps:
Step 1: 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 into venturi is 200000m3/ h, temperature are
130~160 DEG C;The main component of dust in flue gas are as follows: Al2O3, Fe2O3, SiO2, CaO;Wherein, partial size is less than or equal in dust
10 μm of dust accounts for the ratio of total dust are as follows: and 75~80%, dust of the partial size greater than 10 μm accounts for the ratio of total dust are as follows:
20%~25%;
Step 2: the lye in sedimentation basin is respectively enterd in several layers spray tube and venturi by water circulating pump;
Step 3: flow is 200000m in the step 13/ h, the flue gas and step 2 that temperature is 130 DEG C~160 DEG C
Described in lye be sufficiently mixed in venturi after under the action of the centrifugal force, it is at the uniform velocity tangential to enter wet scrubber cylinder
It is interior;It is described tangential for along the circumferential direction, i.e. the direction vertical with wet scrubber cylinder radius;
Step 4: flue gas and lye after being sufficiently mixed described in step 3 enter in wet scrubber cylinder, due to whirlpool
Streaming dedusting plate is arc-shaped structure, and the flue gas and lye after being sufficiently mixed generate vortex, air-flow and air-flow, air-flow and eddy current type
After dedusting plate is mutually hit, removing 90%~95% partial size be greater than 10 μm of dust, removing 35%~40% partial size be less than etc.
In 10 μm of dust, the flue gas after dedusting is entered in fume pipe by airflow channel;
Step 5: the flue gas after dedusting described in step 4 into fume pipe is stopped through dust board in fume pipe
Formula physics dedusting can remove in the flue gas after dedusting 5%~10% dust by the dedusting of blocking type physics;
Step 6: on being continued after gas distributor described in step 5 by the flue gas after blocking type physics dedusting
Rising the flow sprayed with several layers spray tube is 30~50m3The lye of/h comes into full contact with, to remove 45~50% in flue gas
Dust, the flue gas after dedusting are discharged by chimney;Drop to the absorbing liquid and wet scrubber cylinder on covering plate after dedusting
Precipitating through sedimentation basin after absorbing liquid after the dedusting of body bottom is converged, upper layer clear water are continued to use after water circulating pump into literary mound
In the second import and several layers spray tube in.
Preferably, the lye in sedimentation basin described in the step 2 is one of sodium hydroxide solution or ammonia spirit.
The present invention is combined by the way that eddy current type dedusting plate several layers spray tube is arranged, and can be realized the purpose of classification dedusting,
Dust board enhances dust removing effects in the fume pipe of middle section, can finally make whole dust removal efficiency 90% of the invention~
95%, upper layer lye of the absorbing liquid after sedimentation basin precipitates is Ke Xunhuanliyong after dedusting, has investment cost low, and design is reasonable,
Structure is simple, strong applicability, dedusting and desulphurization integrated advantage.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Specific embodiment
For a clearer understanding of the technical characteristics, objects and effects of the present invention, this hair of Detailed description of the invention is now compareed
Bright specific embodiment, identical label indicates identical component in the various figures.To make simplified form, in each figure only schematically
Ground indicates part relevant to invention, they do not represent its practical structures as product.
As 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
2 the first import is connected with the lower gas import of wet scrubber, and the wet scrubber includes wet scrubber cylinder 1,
The top of wet scrubber cylinder 1 is equipped with chimney 12, and the interior middle part of wet scrubber cylinder 1 is equipped with several layers spray tube 6, several
The lower part of layer spray tube 6 is successively arranged gas distributor 10 and covering plate 8, sets between the gas distributor 10 and covering plate 8
There is a fume pipe 9, on the lower part of the covering plate 8 and the corresponding position of the lower gas import of wet scrubber there are two installations
Eddy current type dedusting plate 7 after assembly, forms airflow channel between two eddy current type dedusting plates 7, described airflow channel one end with it is wet
The lower gas import of formula deduster is connected, and the other end is connected with fume pipe 9;The inlet and text of several layers spray tube 6
2 the second import passes through water circulating pump 5 respectively and is connected with the lower part liquid outlet of sedimentation basin 4 in mound, the bottom liquid inlet mouth of sedimentation basin 4
It is connected by pipeline with the second liquid outlet of the first liquid outlet of wet scrubber and wet scrubber, the wet scrubber
The lower part of wet scrubber cylinder 1 is arranged in first liquid outlet, and the second liquid outlet of the wet scrubber is arranged in covering plate 8
Top.9 inner wall of fume pipe is equipped with several dust boards 11.The several layers spray tube 6 is three layers.Described two whirlpools
The material of streaming dedusting plate 7 is stainless steel.
A kind of dust collecting process of compound efficient wet scrubber, the dust collecting process include the following steps:
Step 1: 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 into venturi 2 is 200000m3/ h, temperature
Degree is 130~160 DEG C;The main component of dust in flue gas are as follows: Al2O3, Fe2O3, SiO2, CaO;Wherein, partial size is less than in dust
Dust equal to 10 μm accounts for the ratio of total dust are as follows: and 75~80%, dust of the partial size greater than 10 μm accounts for the ratio of total dust
Are as follows: 20%~25%;
Step 2: the lye in sedimentation basin 4 is respectively enterd in several layers spray tube 6 and venturi 2 by water circulating pump 5;
Step 3: flow is 200000m in the step 13/ h, the flue gas and step 2 that temperature is 130 DEG C~160 DEG C
Described in lye be sufficiently mixed in venturi 2 after under the action of the centrifugal force, it is at the uniform velocity tangential to enter wet scrubber cylinder 1
It is interior;It is described tangential for along the circumferential direction, i.e. the direction vertical with 1 radius of wet scrubber cylinder;
Step 4: flue gas and lye 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 the flue gas and lye after being sufficiently mixed generate vortex, air-flow and air-flow, air-flow and vortex
After formula dedusting plate 7 is mutually hit, the partial size of removing 90%~95% is greater than 10 μm of dust, and the partial size of removing 35%~40% is less than
Equal to 10 μm dust, the flue gas after dedusting are entered in fume pipe 9 by airflow channel;
Step 5: the flue gas after dedusting described in step 4 into fume pipe 9 is carried out through dust board 11 in fume pipe 9
Blocking type physics dedusting can remove in the flue gas after dedusting 5%~10% dust by the dedusting of blocking type physics;
Step 6: continued after gas distributor 10 described in step 5 by the flue gas after blocking type physics dedusting
Rising the flow sprayed with several layers spray tube 6 is 30~50m3The lye of/h comes into full contact with, thus remove 45 in flue gas~
50% dust, the flue gas after dedusting are discharged by chimney 12;Drop to the absorbing liquid and wet type on covering plate 8 after dedusting
Precipitating through sedimentation basin 4 after absorbing liquid after the 1 bottom dedusting of deduster cylinder is converged, upper layer clear water continue after water circulating pump 5
In the second import and several layers spray tube 6 using entrance venturi 2.Lye in sedimentation basin 4 described in the step 2 is
One of sodium hydroxide solution or ammonia spirit.
At the uniform velocity tangential entrance under the action of the centrifugal force after flue gas and lye in the present invention are sufficiently mixed in venturi 2
In wet scrubber cylinder 1, and vortex being generated, air-flow is mutually hit with air-flow, air-flow and eddy current type dedusting plate 7 to be dusted,
Above-mentioned dedusting method increases gas-liquid contact time, enhances dust removing effects;Into fume pipe 9 flue gas through in fume pipe 9
Dust board 11 carries out the dedusting of blocking type physics, and the lye sprayed after blocking type physics dedusting with several layers spray tube 6 is abundant
Contact carries out further dedusting, finally whole dust removal efficiency can be made to reach 90%~95%, and the flue gas of discharge is enable to meet state
The relevant regulations of family.Technical solution of the present invention has the characteristics that dedusting and desulphurization integrated, whole technical solution has structure
Simply, the advantages of designing reasonable, strong applicability and high dust collection efficiency.
For the more detailed explanation present invention, the present invention is further elaborated now in conjunction with embodiment.Specific embodiment
It is as follows:
Embodiment one
A kind of dust collecting process of compound efficient wet scrubber, the dust collecting process include the following steps:
Step 1: containing dust concentration in boiler smoke discharge tube is 700mg/m3Flue gas pass through air-introduced machine 3 and text
2 the first import enters in venturi 2 in mound;The flow of the flue gas into venturi 2 is 200000m3/ h, temperature are
130℃;The main component of dust in flue gas are as follows: Al2O3, Fe2O3, SiO2, CaO;Wherein, partial size is less than or equal to 10 μm in dust
Dust accounts for the ratio of total dust are as follows: and 75%, dust of the partial size greater than 10 μm accounts for the ratio of total dust are as follows: 25%;
Step 2: the lye in sedimentation basin 4 is respectively enterd in several layers spray tube 6 and venturi 2 by water circulating pump 5;
Step 3: flow is 200000m in the step 13/ h, described in the flue gas and step 2 that temperature is 130 DEG C
Lye be sufficiently mixed in venturi 2 after under the action of the centrifugal force, it is at the uniform velocity tangential to enter in wet scrubber cylinder 1;It is described
It is tangential for along the circumferential direction, i.e. the direction vertical with 1 radius of wet scrubber cylinder;
Step 4: flue gas and lye 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 the flue gas and lye after being sufficiently mixed generate vortex, air-flow and air-flow, air-flow and vortex
After formula dedusting plate 7 is mutually hit, the partial size of removing 90%~95% is greater than 10 μm of dust, and the partial size of removing 35%~40% is less than
Equal to 10 μm dust, the flue gas after dedusting are entered in fume pipe 9 by airflow channel;
Step 5: the flue gas after dedusting described in step 4 into fume pipe 9 is carried out through dust board 11 in fume pipe 9
Blocking type physics dedusting can remove in the flue gas after dedusting 5%~10% dust by the dedusting of blocking type physics;
Step 6: continued after gas distributor 10 described in step 5 by the flue gas after blocking type physics dedusting
Rising the flow sprayed with several layers spray tube 6 is 30~50m3The lye of/h comes into full contact with, thus remove 45 in flue gas~
50% dust, the flue gas after dedusting are discharged by chimney 12;Drop to the absorbing liquid and wet type on covering plate 8 after dedusting
Precipitating through sedimentation basin 4 after absorbing liquid after the 1 bottom dedusting of deduster cylinder is converged, upper layer clear water continue after water circulating pump 5
In the second import and several layers spray tube 6 using entrance venturi 2.Lye in sedimentation basin 4 described in the step 2 is
Sodium hydroxide solution.
Embodiment two
A kind of dust collecting process of compound efficient wet scrubber, the dust collecting process include the following steps:
Step 1: containing dust concentration in boiler smoke discharge tube is 1000mg/m3Flue gas pass through air-introduced machine 3 and text
2 the first import enters in venturi 2 in mound;The flow of the flue gas into venturi 2 is 200000m3/ h, temperature are
160℃;The main component of dust in flue gas are as follows: Al2O3, Fe2O3, SiO2, CaO;Wherein, partial size is less than or equal to 10 μm in dust
Dust accounts for the ratio of total dust are as follows: and 80%, dust of the partial size greater than 10 μm accounts for the ratio of total dust are as follows: 20%;
Step 2: the lye in sedimentation basin 4 is respectively enterd in several layers spray tube 6 and venturi 2 by water circulating pump 5;
Step 3: flow is 200000m in the step 13/ h, described in the flue gas and step 2 that temperature is 160 DEG C
Lye be sufficiently mixed in venturi 2 after under the action of the centrifugal force, it is at the uniform velocity tangential to enter in wet scrubber cylinder 1;It is described
It is tangential for along the circumferential direction, i.e. the direction vertical with 1 radius of wet scrubber cylinder;
Step 4: flue gas and lye 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 the flue gas and lye after being sufficiently mixed generate vortex, air-flow and air-flow, air-flow and vortex
After formula dedusting plate 7 is mutually hit, the partial size of removing 90%~95% is greater than 10 μm of dust, and the partial size of removing 35%~40% is less than
Equal to 10 μm dust, the flue gas after dedusting are entered in fume pipe 9 by airflow channel;
Step 5: the flue gas after dedusting described in step 4 into fume pipe 9 is carried out through dust board 11 in fume pipe 9
Blocking type physics dedusting can remove in the flue gas after dedusting 5%~10% dust by the dedusting of blocking type physics;
Step 6: continued after gas distributor 10 described in step 5 by the flue gas after blocking type physics dedusting
Rising the flow sprayed with several layers spray tube 6 is 30~50m3The lye of/h comes into full contact with, thus remove 45 in flue gas~
50% dust, the flue gas after dedusting are discharged by chimney 12;Drop to the absorbing liquid and wet type on covering plate 8 after dedusting
Precipitating through sedimentation basin 4 after absorbing liquid after the 1 bottom dedusting of deduster cylinder is converged, upper layer clear water continue after water circulating pump 5
In the second import and several layers spray tube 6 using entrance venturi 2.Lye in sedimentation basin 4 described in the step 2 is
Ammonia spirit.
Embodiment three
A kind of dust collecting process of compound efficient wet scrubber, the dust collecting process include the following steps:
Step 1: containing dust concentration in boiler smoke discharge tube is 850mg/m3Flue gas pass through air-introduced machine 3 and text
2 the first import enters in venturi 2 in mound;The flow of the flue gas into venturi 2 is 200000m3/ h, temperature are
145℃;The main component of dust in flue gas are as follows: Al2O3, Fe2O3, SiO2, CaO;Wherein, partial size is less than or equal to 10 μm in dust
Dust accounts for the ratio of total dust are as follows: and 77.5%, dust of the partial size greater than 10 μm accounts for the ratio of total dust are as follows: 22.5%;
Step 2: the lye in sedimentation basin 4 is respectively enterd in several layers spray tube 6 and venturi 2 by water circulating pump 5;
Step 3: flow is 200000m in the step 13/ h, described in the flue gas and step 2 that temperature is 145 DEG C
Lye be sufficiently mixed in venturi 2 after under the action of the centrifugal force, it is at the uniform velocity tangential to enter in wet scrubber cylinder 1;It is described
It is tangential for along the circumferential direction, i.e. the direction vertical with 1 radius of wet scrubber cylinder;
Step 4: flue gas and lye 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 the flue gas and lye after being sufficiently mixed generate vortex, air-flow and air-flow, air-flow and vortex
After formula dedusting plate 7 is mutually hit, the partial size of removing 90%~95% is greater than 10 μm of dust, and the partial size of removing 35%~40% is less than
Equal to 10 μm dust, the flue gas after dedusting are entered in fume pipe 9 by airflow channel;
Step 5: the flue gas after dedusting described in step 4 into fume pipe 9 is carried out through dust board 11 in fume pipe 9
Blocking type physics dedusting can remove in the flue gas after dedusting 5%~10% dust by the dedusting of blocking type physics;
Step 6: continued after gas distributor 10 described in step 5 by the flue gas after blocking type physics dedusting
Rising the flow sprayed with several layers spray tube 6 is 30~50m3The lye of/h comes into full contact with, thus remove 45 in flue gas~
50% dust, the flue gas after dedusting are discharged by chimney 12;Drop to the absorbing liquid and wet type on covering plate 8 after dedusting
Precipitating through sedimentation basin 4 after absorbing liquid after the 1 bottom dedusting of deduster cylinder is converged, upper layer clear water continue after water circulating pump 5
In the second import and several layers spray tube 6 using entrance venturi 2.Lye in sedimentation basin 4 described in the step 2 is
Ammonia spirit.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " setting ", " peace
Dress " etc. shall be understood in a broad sense, for example, it may be being fixedly connected, is integrally connected, may be a detachable connection;It is also possible to
Connection inside two elements;It can be directly connected, it can also indirectly connected through an intermediary, for the common of this field
For technical staff, the specific meanings of the above terms in the present invention can be understood according to specific conditions.Foregoing detailed description
Only for illustrating for feasible embodiment of the invention, the protection scope that they are not intended to limit the invention,
It is all to should be included in protection scope of the present invention without departing from equivalent implementations, change made by technical spirit of the present invention and transformation
Within.