CN105688581A - Liquid film dedusting device and desulfurizer dedusting rectification system with same - Google Patents
Liquid film dedusting device and desulfurizer dedusting rectification system with same Download PDFInfo
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- CN105688581A CN105688581A CN201610204079.9A CN201610204079A CN105688581A CN 105688581 A CN105688581 A CN 105688581A CN 201610204079 A CN201610204079 A CN 201610204079A CN 105688581 A CN105688581 A CN 105688581A
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- desulfurizing tower
- desulfurization
- dedusting
- spraying layer
- slurry
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- 239000007788 liquid Substances 0.000 title claims abstract description 40
- 239000000428 dust Substances 0.000 claims abstract description 92
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 58
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000003546 flue gas Substances 0.000 claims abstract description 37
- 238000001816 cooling Methods 0.000 claims abstract description 11
- 239000000110 cooling liquid Substances 0.000 claims abstract description 6
- 230000003009 desulfurizing effect Effects 0.000 claims description 81
- 239000002002 slurry Substances 0.000 claims description 71
- 238000006477 desulfuration reaction Methods 0.000 claims description 57
- 230000023556 desulfurization Effects 0.000 claims description 55
- 238000005507 spraying Methods 0.000 claims description 45
- 238000003756 stirring Methods 0.000 claims description 12
- 238000004140 cleaning Methods 0.000 claims description 10
- 239000007789 gas Substances 0.000 claims description 9
- 238000011010 flushing procedure Methods 0.000 claims description 6
- 230000003647 oxidation Effects 0.000 claims description 6
- 238000007254 oxidation reaction Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 229920002313 fluoropolymer Polymers 0.000 claims description 3
- 229920001083 polybutene Polymers 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 239000002826 coolant Substances 0.000 claims description 2
- 239000003517 fume Substances 0.000 claims description 2
- 239000000779 smoke Substances 0.000 abstract description 5
- 239000010410 layer Substances 0.000 description 46
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 8
- 239000003245 coal Substances 0.000 description 8
- 239000003500 flue dust Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000008187 granular material Substances 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000004071 soot Substances 0.000 description 3
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000006196 drop Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 235000003642 hunger Nutrition 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 230000037351 starvation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/40—Combinations of devices covered by groups B01D45/00 and B01D47/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/80—Semi-solid phase processes, i.e. by using slurries
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention relates to a liquid film dedusting device which is used in a desulfurizer, has a simple structure, can be used for effectively removing smoke dust and liquid drops in flue gas, and is free of secondary pollution. The liquid film dedusting device comprises a dedusting assembly formed by multiple layers of dedusting units, a water inlet header, a water return header, a circulating water pump and a circulating waterway, wherein each layer of dedusting units comprises a plurality of diversion pieces in parallel, a gap is formed between each two adjacent diversion pieces, the diversion pieces of each two adjacent layers of dedusting units are staggered in parallel to rectify flue gas, a water inlet of each diversion piece is communicated with the water inlet header, a water outlet of each diversion piece is communicated with the water return header, the water return header is communicated with the water inlet header via the circulating waterway and the circulating water pump in sequence to form a continuous path, the continuous path is filled with a cooling liquid, and the cooling liquid is used for cooling via air cooling when flowing in a pipeline outside the desulfurizer and is driven by the circulating pump to flow in a continuous circulating manner to precool vapor and liquid drops in flue gas in the desulfurizer to form liquid films on the outer walls of the diversion pieces.
Description
Technical field
The present invention relates to atmosphere pollution and control technical field, particularly relate to a kind of liquid film dust removal device for thermal power plant's waste gas purification and utilize the desulfurizing tower dedusting commutation system of this device。
Background technology
The resources supplIes of China's " rich coal, few gas, oil starvation ", determine the energy resource structure based on coal, the latest data that China Electricity Council issues shows, within considerable time from now on, coal leading position in energy resource structure still will not change, and is the long-term reliable basic energy resource of China。Although the coal resources rich reserves of China, but the colm of high ash and high sulphur content has accounted for more than 30%, wherein, the 50%～60% of coal resources is used for generating electricity, becoming the main source of pollution that caused by coal burning thing, coal directly burns and can produce substantial amounts of pollutant, such as sulfur dioxide, nitrogen oxides and little granule etc., at present, the pollutant emission problem that coal fired power generation causes just is causing showing great attention to of domestic and international society。
On the one hand, Environment Protect in China portion and State Administration for Quality Supervision and Inspection and Quarantine combine up-to-date " fossil-fuel power plant atmospheric pollutant emission standard (GB13223-2011) " of issue, and the dust emission concentration of coal-burning power plant not can exceed that 30mg/Nm3, key area coal-burning power plant emission request is lower than 20mg/Nm3。In December, 2015; Environment Protect in China portion, the National Development and Reform Commission and National Energy Board combine in " implementing in full coal-burning power plant's minimum discharge and reducing energy consumption programme of work " (environment-development [2015] 164) of issue and point out the year two thousand twenty; all coal-burning power plants possessing transformation condition, the whole nation strive realizing minimum discharge level, and smoke dust discharge concentration is not higher than 10mg/Nm3, the whole nation newly-built Thermal generation unit with good conditionsi reaches minimum discharge level。
On the other hand, in recent years in order to solve smoke pollution of boiler thing emission problem, coal-burning power plant has carried out dedusting, denitration, the setting up and transforming of desulphurization system, wherein Wet Flue Gas Desulfurization Technique is widely applied, but, flue gas after desulfurization is carried secretly Gypsum Fibrosum drop, has brought gypsum rain problem, had a strong impact on the living environment of power plant's nearby residents。
In order to reduce flue dust and drop discharge, the design people, actively research and innovation in addition, to found a kind of new structure for the liquid film dust removal device in desulfurizing tower so that it is have more the using value in industry。
Summary of the invention
For solving above-mentioned technical problem, it is an object of the invention to provide a kind of for the simple in construction in desulfurizing tower, the flue dust that can effectively remove in flue gas and drop, be absent from the liquid film dust removal device of secondary pollution。
A kind of liquid film dust removal device of the present invention, for fume treatment in desulfurizing tower, including the dedusting assembly being made up of some layers of dust removing units, water-inlet header, backwater header, water circulating pump and circulation waterway, every layer of dust removing units includes leaving gap between the conducting element of some laid out in parallel and adjacent guide part, the parallel stagger arrangement of conducting element of adjacent two layers dust removing units is arranged so that flue gas is carried out rectification, the water inlet of each conducting element and described water-inlet header are connected, the outlet of each conducting element and described backwater header are connected, described backwater header sequentially passes through circulation waterway, water circulating pump and described water-inlet header are connected to form continuous path, it is equiped with coolant body in described continuous path and described cooling liquid constantly circulates under the driving of water circulating pump so that the steam in flue gas in desulfurizing tower, drop pre-cooling is congealed into liquid film at the outer wall of conducting element。
Further described conducting element be pipe to constitute tube type dust removing assembly, described tube type dust removing assembly along the flue direction of desulfurizing tower in being horizontally disposed with or be obliquely installed；Or described conducting element be hollow deflection plate to constitute baffle plate type dedusting assembly, described baffle plate type dedusting assembly is that ridge type is arranged along the flue direction of desulfurizing tower。
Further, the angle of inclination of the tube type dust removing assembly being obliquely installed described in is 0-15 °；Or the angle of inclination of described baffle plate type dedusting assembly is 25-45 °。
Further, the spacing of adjacent two layers tube type dust removing assembly is 70mm-90mm, and the spacing of adjacent pipe is 90mm-110mm；Or the spacing of adjacent two layers baffle plate type dedusting assembly is 2.5m-4m, and the spacing of adjacent hollow deflection plate is 20mm-50mm。
Further, described cooling liquid is the water of 15 DEG C-25 DEG C。
Further, described conducting element is pipe or hollow deflection plate, and the diameter of described pipe is 45-55mm。
Further, described conducting element is made up of fluoroplastics or polybutene material or rustless steel or steel alloy。
By such scheme, the liquid film dust removal device of the present invention at least has the advantage that what the dust removing units that parallel stagger arrangement is arranged extended flue gas flows through path, flue gas and dust removing units is made to be fully contacted and carry out heat exchange, steam in flue gas, drop pre-cooling is congealed into liquid film at the outer wall of conducting element, liquid film can adhere to soot dust granule, achieve the purpose of flue dust and the drop effectively removing in flue gas, reduce smoke dust discharge concentration, reduce Gypsum Fibrosum droplet entrainment amount, avoid secondary pollution, whole apparatus structure is simple, dependable performance, suitable in station boiler, the flue gas ash removal of Industrial Boiler, easy to utilize。
The desulfurizing tower dedusting commutation system present invention also offers two kinds of flue dust that can effectively remove in flue gas and drop, flue gas having rectified action, efficiency of dust collection high。
A kind of desulfurizing tower dedusting commutation system of the present invention, it is characterised in that: including desulfurizing tower and above-mentioned liquid film dust removal device, described desulfurizing tower bottom is provided with air inlet, top is provided with gas outlet；The splendid attire slurry pool of desulfurization slurry, desulfurization spraying layer, described tube type dust removing assembly and multi-stage demister it is disposed with from bottom to top in described desulfurizing tower；Or it is disposed with the splendid attire slurry pool of desulfurization slurry, desulfurization spraying layer, multi-stage demister and described baffle plate type dedusting assembly in described desulfurizing tower from bottom to top；Or it is disposed with the splendid attire slurry pool of desulfurization slurry, desulfurization spraying layer, one-level demister, described baffle plate type dedusting assembly and one-level demister in described desulfurizing tower from bottom to top；Described slurry pool is connected with feed flow by slurry circulating pump with described desulfurization spraying layer, and described water circulating pump and circulation waterway are positioned at outside described desulfurizing tower。
Further, being provided with cleaning spraying layer in described desulfurizing tower, described cleaning spraying layer is positioned at described tube type dust removing assembly or the top of baffle plate type dedusting assembly, and described cleaning spraying layer is connected with the flushing water pump outside desulfurizing tower；Being additionally provided with agitating device and the oxidation fan ventilated in slurry pool on described desulfurizing tower, described agitating device includes drive motor and is driven the stirring paddle rotated by drive motor, and described stirring paddle stretches into described slurry pool and is submerged in described desulfurization slurry。
The another kind of desulfurizing tower dedusting commutation system of the present invention, including desulfurizing tower and above-mentioned liquid film dust removal device, described desulfurizing tower bottom is provided with air inlet, top is provided with gas outlet；The splendid attire slurry pool of desulfurization slurry, desulfurization spraying layer, described tube type dust removing assembly, described baffle plate type dedusting assembly, multi-stage demister and cleaning spraying layer it is disposed with from bottom to top in described desulfurizing tower；Or it is disposed with the splendid attire slurry pool of desulfurization slurry, desulfurization spraying layer, described tube type dust removing assembly, multi-stage demister, described baffle plate type dedusting assembly in described desulfurizing tower from bottom to top and cleans spraying layer；Or it is disposed with the splendid attire slurry pool of desulfurization slurry, desulfurization spraying layer, described tube type dust removing assembly, one-level demister, described baffle plate type dedusting assembly, one-level demister in described desulfurizing tower from bottom to top and cleans spraying layer；Described cleaning spraying layer is connected with the flushing water pump outside desulfurizing tower；Described slurry pool is connected with feed flow by slurry circulating pump with described desulfurization spraying layer, described desulfurizing tower is additionally provided with agitating device and the oxidation fan ventilated in slurry pool, described agitating device includes drive motor and is driven the stirring paddle rotated by drive motor, described stirring paddle stretches into described slurry pool and is submerged in described desulfurization slurry, and described water circulating pump and circulation waterway are positioned at outside described desulfurizing tower。
By such scheme, the desulfurizing tower dedusting commutation system of the present invention at least has the advantage that one, the dust removing units of parallel stagger arrangement arrangement adopts flue gas condensing to form the principle of liquid film, reaches the purpose of flue dust and the drop effectively removing in flue gas；Two, the dust removing units of parallel stagger arrangement arrangement incorporates the flow direction and the flow velocity of flue gas, improves the uniformity of flue gas, reduces the blocking risk of the demister being positioned at dust removing units downstream in desulfurizing tower, improve the efficiency of dedusting；Three, desulfurizing tower dedusting commutation system is simple, it is not necessary to sewage treatment equipment, and use cost is low。
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention, and can be practiced according to the content of description, below with presently preferred embodiments of the present invention and coordinate accompanying drawing describe in detail as after。
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment one of the desulfurizing tower dedusting commutation system of the present invention；
Fig. 2 is the structural representation of the liquid film dust removal device (monolayer, horizontally disposed tube type dust removing assembly) of the present invention；
Fig. 3 is the structural representation of the embodiment two of the desulfurizing tower dedusting commutation system of the present invention；
Fig. 4 is the structural representation of the liquid film dust removal device (monolayer, baffle plate type dedusting assembly) of the present invention。
Detailed description of the invention
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail。Following example are used for illustrating the present invention, but are not limited to the scope of the present invention。
Embodiment one:
Shown in Fig. 1-2, a kind of desulfurizing tower dedusting commutation system of the preferred embodiment of the present invention, including desulfurizing tower 5 and liquid film dust removal device, liquid film dust removal device includes the dedusting assembly being made up of the horizontally disposed dust removing units 11 of two-layer, water-inlet header 112, backwater header 113, water circulating pump 10 and circulation waterway 12, it is outside that water circulating pump 10 and circulation waterway 12 are positioned at desulfurizing tower 5, the spacing of adjacent two layers dust removing units 11 is 80mm, the spacing of pipe 111 and pipe 111 that every layer of dust removing units 11 includes some laid out in parallel is 100mm, the parallel stagger arrangement arrangement of pipe 111 of adjacent two layers dust removing units 11, form tube type dust removing assembly, the water inlet of each pipe 111 and water-inlet header 112 are connected, the outlet of each pipe 111 and backwater header 113 are connected, backwater header 113 is sequentially by circulation waterway 12, water circulating pump 10 and water-inlet header 112 are connected to form continuous path, the water and the water that are equiped with 20 DEG C in continuous path constantly circulate under the driving of water circulating pump 10；Desulfurizing tower 5 bottom is provided with air inlet 6, top is provided with gas outlet 13, being disposed with the splendid attire slurry pool 4 of desulfurization slurry, desulfurization spraying layer 7,11, three grades of rhombus demisters 8 of some layers of dust removing units in desulfurizing tower 5 from bottom to top and clean spraying layer, each blade of afterbody rhombus demister 8 installs 6 pieces of gussets additional to improve gas-liquid separation efficiency；Clean spraying layer to be connected with the flushing water pump 9 outside desulfurizing tower 5；Slurry pool 4 is connected with feed flow by slurry circulating pump 3 with desulfurization spraying layer 7, desulfurizing tower 5 is additionally provided with agitating device 2 and the oxidation fan 1 ventilated in slurry pool 4, agitating device 2 includes drive motor and is driven the stirring paddle rotated by drive motor, and stirring paddle stretches into slurry pool 4 and is submerged in desulfurization slurry。
The pipe that diameter is 50mm that the pipe 111 of liquid film dust removal device is made up of fluoroplastics or polybutene material or rustless steel or steel alloy, its heat exchange effect is good, chemical-resistant is good, loss factor is low, normal-temperature water is drawn materials convenient and cheap, and the water-saving result adopting recirculated water is obvious。
The operation principle of the desulfurizing tower dedusting commutation system of the present invention:
The temperature of desulfurizing tower 5 inlet flue gas is 50 DEG C, its smoke-density is 1225kg/m3, in flue gas enters desulfurizing tower 5 from air inlet 6 and flow up, flue gas flows up through after desulfurization spraying layer 7, two-layer dust removing units 11 and three grades of rhombus demisters 8 by gas outlet 13 discharged to air。
One, slurry pool 4, slurry circulating pump 3, desulfurization spraying layer 7 match and form the desulfurization environment of circulated sprinkling desulfurization slurry, and flue gas flows up through desulfurization spraying layer 7 to carry out being fully contacted and carrying out desulphurization reaction with desulfurization slurry；
Two, the flue gas after desulfurization continues up and flows through two-layer dust removing units 11, carry out heat exchange and rectification, steam in flue gas, drop pre-cooling congeal into liquid film on pipe 111 wall of dust removing units 11, simultaneously, the soot dust granule carried in flue gas is attached on pipe 111 wall, after long time integration, forms Gypsum Fibrosum drop and falls into slurry pool 4, completing the collection of Gypsum Fibrosum drop, Gypsum Fibrosum drop is further reaction desulfuration in slurry pool 4；
Three and step 2 be synchronously performed, water in dust removing units 11 is heated and temperature rising, the water that water circulating pump 10 will heat up takes desulfurizing tower 5 out of and through circulation waterway 12 and air heat exchange cooling, and the water after cooling enters dust removing units 11 with dedusting again through water circulating pump 10；
Four, flue gas flows through three grades of rhombus demisters 8 and carries out gas-liquid separation to reclaim drop further。
Five, clean the in good time shower water of spraying layer, clean the laying dust outside dust removing units 11 and three grades of rhombus demisters 8 with blockage resisting or caking。
As shown in the table, under different operating modes, the efficiency of dust collection of the desulfurizing tower dedusting commutation system of the present embodiment is as follows:
The dust removing units 11 related in this enforcement is in being horizontally disposed with, but it is not limited only to this, also the dust removing units 11 being inclined to set or ridge-roof type is arranged is can be selected in desulfurizing tower 5, the angle of inclination of the dust removing units 11 being obliquely installed is 0-15 °, and be obliquely installed or ridge-roof type arrange the more horizontally disposed dust removing units 11 of dust removing units 11 increase contact dedusting area, efficiency of dust collection is higher。
Embodiment two:
As shown in Figure 3-4, a kind of desulfurizing tower dedusting commutation system of the preferred embodiment of the present invention, including desulfurizing tower 5 and liquid film dust removal device, liquid film dust removal device includes the dedusting assembly being made up of two-layer dust removing units (11), water-inlet header 112, backwater header 113, water circulating pump 10 and circulation waterway 12, the spacing of adjacent two layers dust removing units 11 is 3m, the spacing of deflection plate 111 and adjacent baffle 111 that every layer of dust removing units 11 includes some laid out in parallel is 30mm, preferably, deflection plate 111 is that existing deflection plate is transformed into hollow deflection plate, the parallel stagger arrangement of deflection plate 111 of adjacent two layers dust removing units 11 is arranged so that flue gas is carried out rectification, constitute baffle plate type dedusting assembly and ridge type is arranged, the angle of inclination of this baffle plate type dedusting assembly is 30 °, the water inlet of each deflection plate 111 and water-inlet header 112 are connected, the outlet of each deflection plate 111 and backwater header 113 are connected, backwater header 113 is sequentially by circulation waterway 12, water circulating pump 10 and water-inlet header 112 are connected to form continuous path, the water and the water that are equiped with 20 DEG C in continuous path constantly circulate under the driving of water circulating pump 10, it is outside that water circulating pump 10 and circulation waterway 12 are positioned at desulfurizing tower 5；Desulfurizing tower 5 bottom is provided with air inlet 6, top is provided with gas outlet 13, is disposed with the splendid attire slurry pool 4 of desulfurization slurry, desulfurization spraying layer 7, multi-stage flat plate type demister 8, baffle plate type dedusting assembly from bottom to top and cleans spraying layer in desulfurizing tower 5；Clean spraying layer to be connected with the flushing water pump 9 outside desulfurizing tower 5；Slurry pool 4 is connected with feed flow by slurry circulating pump 3 with desulfurization spraying layer 7, desulfurizing tower 5 is additionally provided with agitating device 2 and the oxidation fan 1 ventilated in slurry pool 4, agitating device 2 includes drive motor and is driven the stirring paddle rotated by drive motor, and stirring paddle stretches into slurry pool 4 and is submerged in desulfurization slurry。
The operation principle of the desulfurizing tower dedusting commutation system of the present embodiment:
One, flue gas enters in desulfurizing tower 5 from air inlet 6 and flows up；
Two, slurry pool 4, slurry circulating pump 3, desulfurization spraying layer 7 match and form the desulfurization environment of circulated sprinkling desulfurization slurry, and flue gas flows up through desulfurization spraying layer 7 to carry out being fully contacted and carrying out desulphurization reaction with desulfurization slurry；
Three, flue gas flows up through multi-stage flat plate type demister 8 thus realizing gas-liquid separation, and droplets fall back is to slurry pool 4；
Four, the flue gas after desulfurization continues up and flows through the dedusting assembly arranged in ridge-roof type, carry out heat exchange and rectification, steam in flue gas, drop pre-cooling congeal into liquid film on deflection plate 111 wall of dust removing units 11, simultaneously, the soot dust granule carried in flue gas is attached on deflection plate 111 wall, after long time integration, forms Gypsum Fibrosum drop and falls into slurry pool 4, completing the collection of Gypsum Fibrosum drop, Gypsum Fibrosum drop is further reaction desulfuration in slurry pool 44；
Five and step 2 be synchronously performed, water in dust removing units 11 is heated and temperature rising, the water that water circulating pump 10 will heat up takes desulfurizing tower 5 out of and through circulation waterway 12 and air heat exchange cooling, and the water after cooling enters dust removing units 11 with dedusting again through water circulating pump 10；
Six, clean the in good time shower water of spraying layer, clean dust removing units 11 and multi-stage flat plate type demister 8 with blockage resisting or caking；
Seven, the flue gas after dedusting from gas outlet 13 discharged to air。
The dust removing units 11 implementing to relate in two is in ridge-roof type setting, but is not limited only to this, also can be selected for being inclined to set or horizontally disposed dust removing units 11 in desulfurizing tower 5, and the angle of inclination of the dust removing units 11 being obliquely installed is 0-15 °。
Below it is only the preferred embodiment of the present invention; it is not limited to the present invention; should be understood that; for those skilled in the art; under the premise without departing from the technology of the present invention principle; can also making some improvement and modification, these improve and modification also should be regarded as protection scope of the present invention。
Claims (10)
1. a liquid film dust removal device, for desulfurizing tower (5) interior fume treatment, it is characterized in that: include the dedusting assembly being made up of some layers of dust removing units (11), water-inlet header (112), backwater header (113), water circulating pump (10) and circulation waterway (12), every layer of dust removing units (11) includes leaving gap between the conducting element (111) of some laid out in parallel and adjacent guide part (111), the parallel stagger arrangement of conducting element (111) of adjacent two layers dust removing units (11) is arranged so that flue gas is carried out rectification, the water inlet of each conducting element (111) and described water-inlet header (112) are connected, the outlet of each conducting element (111) and described backwater header (113) are connected, described backwater header (113) is sequentially by circulation waterway (12), water circulating pump (10) and described water-inlet header (112) are connected to form continuous path, it is equiped with coolant body and described cooling liquid in described continuous path and constantly circulates so that the steam in flue gas in desulfurizing tower (5) under the driving of water circulating pump (10), drop pre-cooling is congealed into liquid film at the outer wall of conducting element (111)。
2. liquid film dust removal device according to claim 1, it is characterized in that: described conducting element (111) is for pipe to constitute tube type dust removing assembly, and described tube type dust removing assembly is be horizontally disposed with or be obliquely installed along the flue direction of desulfurizing tower (5)；Or described conducting element (111) is for hollow deflection plate to constitute baffle plate type dedusting assembly, and described baffle plate type dedusting assembly is that ridge type is arranged along the flue direction of desulfurizing tower (5)。
3. liquid film dust removal device according to claim 2, it is characterised in that: described in the angle of inclination of tube type dust removing assembly that is obliquely installed be 0-15 °；Or the angle of inclination of described baffle plate type dedusting assembly is 25-45 °。
4. liquid film dust removal device according to claim 2, it is characterised in that: the spacing of adjacent two layers tube type dust removing assembly is 70mm-90mm, and the spacing of adjacent pipe is 90mm-110mm；Or the spacing of adjacent two layers baffle plate type dedusting assembly is 2.5m-4m, and the spacing of adjacent hollow deflection plate is 20mm-50mm。
5. liquid film dust removal device according to claim 2, it is characterised in that: described cooling liquid is the water of 15 DEG C-25 DEG C。
6. liquid film dust removal device according to claim 2, it is characterised in that: described conducting element (111) is pipe or hollow deflection plate, and the diameter of described pipe is 45-55mm。
7. liquid film dust removal device according to claim 2, it is characterised in that: described conducting element (111) is made up of fluoroplastics or polybutene material or rustless steel or steel alloy。
8. a desulfurizing tower dedusting commutation system, it is characterized in that: include desulfurizing tower (5) and the liquid film dust removal device as according to any one of claim 2-7, described desulfurizing tower (5) bottom is provided with air inlet (6), top is provided with gas outlet (13)；
The splendid attire slurry pool (4) of desulfurization slurry, desulfurization spraying layer (7), described tube type dust removing assembly and multi-stage demister it is disposed with from bottom to top in described desulfurizing tower (5)；
Or it is disposed with the splendid attire slurry pool (4) of desulfurization slurry, desulfurization spraying layer (7), multi-stage demister and described baffle plate type dedusting assembly in described desulfurizing tower (5) from bottom to top；
Or it is disposed with the splendid attire slurry pool (4) of desulfurization slurry, desulfurization spraying layer (7), one-level demister, described baffle plate type dedusting assembly and one-level demister in described desulfurizing tower (5) from bottom to top；
Described slurry pool (4) is connected with feed flow by slurry circulating pump (3) with described desulfurization spraying layer (7), and it is outside that described water circulating pump (10) and circulation waterway (12) are positioned at described desulfurizing tower (5)。
9. desulfurizing tower dedusting commutation system according to claim 8, it is characterized in that: described desulfurizing tower is provided with cleaning spraying layer in (5), described cleaning spraying layer is positioned at described tube type dust removing assembly or the top of baffle plate type dedusting assembly, and described cleaning spraying layer is connected with the flushing water pump (9) of desulfurizing tower (5) outside；Described desulfurizing tower (5) is additionally provided with agitating device (2) and the oxidation fan (1) ventilated in slurry pool (4), described agitating device (2) includes drive motor and is driven the stirring paddle rotated by drive motor, and described stirring paddle stretches into described slurry pool (4) and is submerged in described desulfurization slurry。
10. a desulfurizing tower dedusting commutation system, it is characterized in that: include desulfurizing tower (5) and the liquid film dust removal device as according to any one of claim 2-7, described desulfurizing tower (5) bottom is provided with air inlet (6), top is provided with gas outlet (13)；
The splendid attire slurry pool (4) of desulfurization slurry, desulfurization spraying layer (7), described tube type dust removing assembly, described baffle plate type dedusting assembly, multi-stage demister and cleaning spraying layer it is disposed with from bottom to top in described desulfurizing tower (5)；
Or it is disposed with the splendid attire slurry pool (4) of desulfurization slurry, desulfurization spraying layer (7), described tube type dust removing assembly, multi-stage demister, described baffle plate type dedusting assembly in described desulfurizing tower (5) from bottom to top and cleans spraying layer；
Or it is disposed with the splendid attire slurry pool (4) of desulfurization slurry, desulfurization spraying layer (7), described tube type dust removing assembly, one-level demister, described baffle plate type dedusting assembly, one-level demister in described desulfurizing tower (5) from bottom to top and cleans spraying layer；Described cleaning spraying layer is connected with the flushing water pump (9) of desulfurizing tower (5) outside；Described slurry pool (4) is connected with feed flow by slurry circulating pump (3) with described desulfurization spraying layer (7), described desulfurizing tower (5) is additionally provided with agitating device (2) and the oxidation fan (1) ventilated in slurry pool (4), described agitating device (2) includes drive motor and is driven the stirring paddle rotated by drive motor, described stirring paddle stretches into described slurry pool (4) and is submerged in described desulfurization slurry, and it is outside that described water circulating pump (10) and circulation waterway (12) are positioned at described desulfurizing tower (5)。
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| CN201610204079.9A CN105688581A (en) | 2016-04-01 | 2016-04-01 | Liquid film dedusting device and desulfurizer dedusting rectification system with same |
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| CN201610204079.9A CN105688581A (en) | 2016-04-01 | 2016-04-01 | Liquid film dedusting device and desulfurizer dedusting rectification system with same |
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| CN201610204079.9A Pending CN105688581A (en) | 2016-04-01 | 2016-04-01 | Liquid film dedusting device and desulfurizer dedusting rectification system with same |
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| CN106422740A (en) * | 2016-11-11 | 2017-02-22 | 中国大唐集团科学技术研究院有限公司 | Centrifugal type deep flue gas purification device provided with shunting ring and desulfurization tower |
| CN106582153A (en) * | 2016-12-29 | 2017-04-26 | 北京新世翼节能环保科技股份有限公司 | Horizontal fluorine plastic tube type dust and mist collection device mounted inside absorption tower |
| CN107185329A (en) * | 2017-07-24 | 2017-09-22 | 北京国电龙源环保工程有限公司 | A kind of high-effective dust-removing and device for reclaiming moisture |
| CN108201706A (en) * | 2018-03-14 | 2018-06-26 | 重庆东钛化工有限公司 | The heat-engine plant desulfurized tower water cooling coagulating type demister circulatory system |
| CN108525413A (en) * | 2018-05-22 | 2018-09-14 | 马龙县天龙橡胶制品有限公司 | A kind of waste tire processing exhaust gas purification system |
| CN109432976A (en) * | 2019-01-02 | 2019-03-08 | 江苏龙净节能科技有限公司 | A kind of modular condensation pre electrified grid |
| CN110652807A (en) * | 2019-09-30 | 2020-01-07 | 四川大学 | Non-uniform film falling pipe, unit and device applied to falling film dust removal |
| CN115715925A (en) * | 2022-11-16 | 2023-02-28 | 山东志庆德碳素科技有限公司 | Flue gas desulfurization device is used in burnt production after calcination |
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| CN106582153A (en) * | 2016-12-29 | 2017-04-26 | 北京新世翼节能环保科技股份有限公司 | Horizontal fluorine plastic tube type dust and mist collection device mounted inside absorption tower |
| CN107185329A (en) * | 2017-07-24 | 2017-09-22 | 北京国电龙源环保工程有限公司 | A kind of high-effective dust-removing and device for reclaiming moisture |
| CN108201706A (en) * | 2018-03-14 | 2018-06-26 | 重庆东钛化工有限公司 | The heat-engine plant desulfurized tower water cooling coagulating type demister circulatory system |
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