CN116623496A - Asphalt mixture stirring and dedusting system and process - Google Patents
Asphalt mixture stirring and dedusting system and process Download PDFInfo
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- CN116623496A CN116623496A CN202310709053.XA CN202310709053A CN116623496A CN 116623496 A CN116623496 A CN 116623496A CN 202310709053 A CN202310709053 A CN 202310709053A CN 116623496 A CN116623496 A CN 116623496A
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- 239000010426 asphalt Substances 0.000 title claims abstract description 58
- 238000003756 stirring Methods 0.000 title claims abstract description 28
- 239000000203 mixture Substances 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000000428 dust Substances 0.000 claims abstract description 326
- 239000000843 powder Substances 0.000 claims abstract description 104
- 238000007599 discharging Methods 0.000 claims abstract description 91
- 239000000779 smoke Substances 0.000 claims abstract description 30
- 238000005507 spraying Methods 0.000 claims abstract description 18
- 239000004615 ingredient Substances 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 46
- 238000002156 mixing Methods 0.000 claims description 9
- 238000003860 storage Methods 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000005453 pelletization Methods 0.000 claims 1
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 59
- 239000003546 flue gas Substances 0.000 description 58
- 238000010521 absorption reaction Methods 0.000 description 33
- 238000007789 sealing Methods 0.000 description 26
- 239000003921 oil Substances 0.000 description 20
- 239000002699 waste material Substances 0.000 description 19
- 239000007789 gas Substances 0.000 description 15
- 230000008929 regeneration Effects 0.000 description 8
- 238000011069 regeneration method Methods 0.000 description 8
- 239000000126 substance Substances 0.000 description 8
- 238000001035 drying Methods 0.000 description 7
- 239000003517 fume Substances 0.000 description 7
- 238000000605 extraction Methods 0.000 description 6
- 238000010992 reflux Methods 0.000 description 6
- 238000009833 condensation Methods 0.000 description 5
- 230000005494 condensation Effects 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 238000004064 recycling Methods 0.000 description 5
- 239000000295 fuel oil Substances 0.000 description 4
- 230000006698 induction Effects 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- FMMWHPNWAFZXNH-UHFFFAOYSA-N Benz[a]pyrene Chemical compound C1=C2C3=CC=CC=C3C=C(C=C3)C2=C2C3=CC=CC2=C1 FMMWHPNWAFZXNH-UHFFFAOYSA-N 0.000 description 3
- 241000353097 Molva molva Species 0.000 description 3
- 210000000988 bone and bone Anatomy 0.000 description 3
- 230000000711 cancerogenic effect Effects 0.000 description 3
- 231100000315 carcinogenic Toxicity 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- UJOBWOGCFQCDNV-UHFFFAOYSA-N 9H-carbazole Chemical compound C1=CC=C2C3=CC=CC=C3NC2=C1 UJOBWOGCFQCDNV-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 238000012806 monitoring device Methods 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- DXBHBZVCASKNBY-UHFFFAOYSA-N 1,2-Benz(a)anthracene Chemical compound C1=CC=C2C3=CC4=CC=CC=C4C=C3C=CC2=C1 DXBHBZVCASKNBY-UHFFFAOYSA-N 0.000 description 1
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 125000000753 cycloalkyl group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 125000005575 polycyclic aromatic hydrocarbon group Chemical group 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
- E01C19/10—Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resins, i.e. producing mixtures or coating aggregates otherwise than by penetrating or surface dressing; Apparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
- E01C19/1009—Plant wherein type or construction of the mixer are irrelevant
-
- 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
- B01D47/06—Spray cleaning
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C2301/00—Machine characteristics, parts or accessories not otherwise provided for
- E01C2301/50—Methods or devices for preventing dust by spraying or sucking
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Road Paving Machines (AREA)
Abstract
The invention discloses an asphalt mixture stirring dust removing system and process, comprising a powder oil-wrapping dust removing device, wherein the powder oil-wrapping dust removing device consists of a powder oil-wrapping device and a first bag type dust remover, an air inlet end of the powder oil-wrapping device is used for receiving dust generated by ingredients, the powder oil-wrapping device comprises a fourth dust collection main pipe, a powder spraying pipe, a blower and a powder spraying tank, a vortex pipe joint is arranged on the fourth dust collection main pipe, a feeding branch pipe positioned on the feeding side of the vortex pipe joint is arranged on the side wall of the fourth dust collection main pipe, the discharging direction of the feeding branch pipe is parallel to the air outlet direction of the fourth dust collection main pipe, a bottom discharging hole of the powder spraying tank is respectively connected to a powder inlet of the powder spraying pipe and an air outlet of the blower, and the discharging hole of the powder spraying pipe is connected to the side wall of the fourth dust collection main pipe, and the discharging hole direction of the powder spraying pipe is parallel to the air outlet direction of the fourth dust collection main pipe. The whole system has reasonable design, simple and ingenious process, high dust and smoke removal efficiency and good treatment effect, and achieves the purpose of green environmental protection.
Description
The invention relates to a divisional application of an invention patent application with application number of 201810570270.4 and application date of 2018, 06 and 05, namely an asphalt mixture stirring environment-friendly treatment system and process.
Technical Field
The invention belongs to the technical field of environmental protection treatment of asphalt mixture stirring stations, and particularly relates to an asphalt mixture stirring and dedusting system and process.
Background
The asphalt mixture stirring equipment is a mechanical device for producing and stirring various asphalt mixtures, and is an important equipment for road construction and maintenance. The asphalt mixture stirring equipment can generate a large amount of waste gas, mainly asphalt flue gas and dust, in the production process of the hot-mix mixture. Wherein, the high-temperature asphalt can generate a large amount of asphalt smoke at the discharging position of the exhaust port of the asphalt tank and the stirring pot; dust generated in the production processes of batching, feeding, stirring, discharging and the like is drifting everywhere, so that not only can the health of operators be seriously influenced, but also serious pollution can be caused to equipment and surrounding environments, such as haze, and the life of surrounding residents is influenced. In order to prevent the exhaust gas from harming the health of people and polluting the surrounding environment, the exhaust gas must be effectively restrained, and the air quality of the surrounding environment is improved.
Wherein, the asphalt fume is characterized by easy adhesion and inflammability and explosiveness above a certain temperature. In the process of collecting, conveying and eliminating smoke of asphalt flue gas, liquid-solid asphalt is easily adhered to the surfaces of pipelines and equipment; the solidified asphalt is difficult to remove, and often causes pipeline blockage and equipment damage, so that the system cannot normally operate. In addition, the asphalt smoke components are extremely complex and vary with asphalt sources; the asphalt fume contains solid and liquid particles formed by condensing volatile components of asphalt and vapor state organic matters, and part of the organic matters are high molecular polymers, so that serious environmental pollution is caused. The smoke contains various organic matters including carbon cyclic hydrocarbon, cyclic hydrocarbon derivatives and other compounds, which have a harmful effect on human health, the asphalt smoke contains various polycyclic aromatic hydrocarbon substances such as benzopyrene, benzanthracene, carbazole and the like, most of the substances are cancerogenic and strong cancerogenic substances, the particle size is between 0.1 and 1.0 mu m, the minimum particle size is only 0.01 mu m, the maximum particle size is about 10.0 mu m, the substances are various cancerogenic substances represented by 3, 4-benzopyrene, and the substances can be attached to fly ash below 8 mu m, are absorbed into human body through respiratory tract and harm human health.
Aiming at the environmental protection requirement of asphalt stirring equipment, three main points are needed to be solved: dust needs to be organized and concentrated; the asphalt flue gas needs to be treated in an organized and concentrated way; noise needs to be effectively controlled during the operation of the equipment.
Disclosure of Invention
In view of the defects of the prior art, the technical problem to be solved by the invention is to provide a stirring and dedusting system and a process for asphalt mixture, which can organically and intensively treat dust and asphalt flue gas and reduce noise generated by equipment operation.
In order to solve the technical problems, the invention adopts a technical scheme that: the asphalt mixture stirring dust removing system comprises a batching dust collecting device, a discharging dust collecting device, a powder oil-wrapping dust removing device and a recovered powder humidifying device, wherein the batching dust collecting device consists of a cold material enclosing device and a cold material dust collecting device, the cold material enclosing device is arranged at the outer side of the batching system, and an air inlet end of the cold material dust collecting device is arranged in the cold material enclosing device in a penetrating manner; the discharging and discharging smoke dust collecting device consists of a lane enclosing device and a discharging and discharging dust collecting device, wherein the lane enclosing device is arranged at the bottom channel position of the mixing building, and the air inlet end of the discharging and discharging dust collecting device is arranged in the lane enclosing device in a penetrating manner; the powder oil-wrapped dust collector comprises a powder oil-wrapped device and a first bag type dust collector, wherein the air outlet end of the cold material dust collector is connected to the air inlet end of the powder oil-wrapped device, the air outlet end of the discharging dust collector is connected to the air inlet end of the powder oil-wrapped device, the air outlet end of the powder oil-wrapped device is connected to the air inlet end of the first bag type dust collector, the discharge end of the first bag type dust collector is connected to the feed end of the recovered powder humidifying device, and the batching dust collector, the discharging dust collector, the powder oil-wrapped dust collector and the recovered powder humidifying device are all electrically connected to the control device.
Preferably, the cold material enclosing device comprises a raw aggregate enclosing device, the raw aggregate enclosing device comprises a first supporting frame and a plurality of first sealing plates fixed on the first supporting frame, the first supporting frame is arranged around a row of raw aggregate bins, and the first sealing plates enclose the left side, the right side, the rear side and the top side of the row of raw aggregate bins; the cold material dust extraction contains the first aggregate dust extraction, the first aggregate dust extraction contains first dust absorption main pipe, a plurality of first dust absorption cover body and many first dust absorption branch pipes, the air inlet that the air inlet of first dust absorption main pipe was connected to powder oil-wrapped device through first electronic air door, first dust absorption main pipe wears to locate in the first aggregate enclosure device and fix on first braced frame, the lateral wall of first dust absorption main pipe is provided with a plurality of first dust absorption joints and a plurality of second dust absorption joint, first dust absorption joint is connected with the air outlet that corresponds first dust absorption cover body through first pneumatic butterfly valve, first dust absorption cover body is located the back top that corresponds the first bone stock bin, the air inlet of first dust absorption cover body is towards the feed inlet top that corresponds the bone stock bin, the second dust absorption joint is connected with the air outlet that corresponds the first dust absorption branch pipe, the air inlet of first dust absorption branch pipe is located the discharge gate next door of bone stock bin, the air inlet of first dust absorption branch pipe is provided with first manual butterfly valve.
Preferably, the virgin aggregate enclosing device further comprises a second supporting frame and a plurality of second sealing plates fixed on the second supporting frame, wherein the second supporting frame is arranged around the virgin aggregate inclined conveying belt and the virgin aggregate Leng Zhen sieve, and the second sealing plates enclose the virgin aggregate inclined conveying belt and the virgin aggregate Leng Zhenshai; the primary aggregate dust collection device further comprises a second dust collection cover body, a third dust collection connector is arranged on the side wall of the first dust collection main pipe, the third dust collection connector is connected to the air outlet end of the second dust collection cover body through a second electric air door, and the air inlet end of the second dust collection cover body is located right above the primary aggregate Leng Zhenshai.
Preferably, the cold material enclosing device further comprises a regenerated material enclosing device, the regenerated material enclosing device comprises a third supporting frame and a plurality of third sealing plates fixed on the third supporting frame, the third supporting frame is arranged around a row of regenerated storage bins, and the third sealing plates enclose the left side, the right side, the rear side and the top side of the row of regenerated storage bins; the cold material dust extraction still contains regeneration dust extraction, regeneration dust extraction contains second dust absorption main pipe, a plurality of third dust absorption cover body and many second dust absorption branch pipes, the air outlet of second dust absorption main pipe is connected to the air outlet end lateral wall of first dust absorption main pipe through the third electronic air door, the second dust absorption main pipe wears to locate regeneration material enclosure device and fixes on third braced frame, the lateral wall of second dust absorption main pipe is provided with a plurality of fourth dust absorption and a plurality of fifth dust absorption and connects, the fourth dust absorption is connected with the air outlet end that corresponds the third dust absorption cover body through the third pneumatic butterfly valve, the third dust absorption cover body is located the back top that corresponds the regeneration feed bin, the air inlet end orientation that corresponds the regeneration feed bin of the third dust absorption cover body, the fifth dust absorption is connected with the air outlet end that corresponds the second dust absorption branch pipe, the air inlet end of second dust absorption branch pipe is located the discharge gate next door of regeneration feed bin, the air inlet end of second dust absorption branch pipe is provided with the second manual butterfly valve.
Preferably, the lane enclosing device comprises a fourth supporting frame and a plurality of fourth sealing plates arranged on the fourth supporting frame, the fourth supporting frame is arranged at the bottom channel position of the mixing building, the fourth sealing plates enclose the left side, the right side and the top side of the bottom channel of the mixing building to form a lane, and two sets of photoelectric induction rolling doors respectively arranged at two ends of the lane are arranged on the fourth supporting frame; the discharging and dust sucking device comprises a third dust sucking main pipe, a plurality of finished product discharging dust sucking branch pipes and a plurality of waste product discharging dust sucking branch pipes, wherein the air outlet end of the third dust sucking main pipe is connected to the air inlet end of the powder oil wrapping device through a fourth electric air door, the third dust sucking main pipe penetrates through the lane enclosing device and is fixed on a fourth supporting frame, a plurality of sixth dust sucking connectors and a plurality of seventh dust sucking connectors are arranged on two side walls of the air inlet end of the third dust sucking main pipe, the finished product discharging dust sucking branch pipes are connected to the sixth dust sucking connectors through fourth pneumatic butterfly valves, the finished product discharging dust sucking branch pipes are located beside the discharging openings of the finished product bin, a plurality of first dust sucking openings are formed in the bottom side walls of the finished product discharging dust sucking branch pipes, the waste product discharging dust sucking branch pipes are connected to the seventh dust sucking connectors through fifth pneumatic butterfly valves, a plurality of second dust sucking openings are formed in the bottom side walls of the waste product discharging dust sucking main pipe, and a plurality of third dust sucking openings are formed in the lane.
Preferably, a bifurcation pipe is arranged on the side wall of the third main dust collection pipe, and the air outlet end of the bifurcation pipe is connected to the air inlet of the burner of the raw material drying roller through a fifth electric air door and a flue gas conveying pipe in sequence.
Preferably, the powder oil-wrapped device comprises a fourth dust collection main pipe, a powder spraying pipe, a blower and a powder spraying tank, wherein a vortex pipe joint is arranged on the fourth dust collection main pipe, a feeding branch pipe positioned at the feeding side of the vortex pipe joint is arranged on the side wall of the fourth dust collection main pipe, the discharging direction of the feeding branch pipe is parallel to the air outlet direction of the fourth dust collection main pipe, the bottom discharging port of the powder spraying tank is respectively connected to the powder inlet of the powder spraying pipe and the air outlet of the blower through a first impeller feeder, the discharging port of the powder spraying pipe is connected to the side wall of the fourth dust collection main pipe, the discharging port direction of the powder spraying pipe is parallel to the air outlet direction of the fourth dust collection main pipe, the top feeding port of the powder spraying tank is sequentially connected to the first discharging port at the side part of the powder recovery storage tank through a second impeller feeder and a third manual butterfly valve, and the second spiral conveyor at the side part of the powder recovery storage tank is sequentially connected to the feeding port of the powder recovery humidifying device through a fourth manual butterfly valve, a third impeller feeder and a second spiral conveyor.
Preferably, the recycled powder humidifying device comprises a fourth impeller feeder and a double-shaft waste powder humidifier, wherein the discharge port of the first bag type dust collector is connected with the feed port of the fourth impeller feeder, and the discharge port of the fourth impeller feeder is connected to the feed port of the double-shaft waste powder humidifier.
Preferably, the asphalt scale flue gas collection device comprises a first flue gas collection pipe and a first flue gas collection cover, the air inlet end of the first flue gas collection pipe is connected with the air outlet end of the first flue gas collection cover through a sixth pneumatic butterfly valve, the first flue gas collection cover is located above the asphalt scale, the air inlet end of the first flue gas collection cover faces the asphalt scale, the oil discharge pool flue gas collection device comprises a second flue gas collection pipe and a second flue gas collection cover, the air inlet end of the second flue gas collection pipe is connected with the air outlet end of the second flue gas collection cover through a seventh pneumatic butterfly valve, the second flue gas collection cover is located above the oil discharge pool, the air outlet end of the second flue gas collection cover faces the oil discharge pool, and the air outlet end of the first flue gas collection pipe and the air outlet end of the second flue gas collection pipe are connected to the air inlet end of the powder-wrapped dust removal device through a sixth electric air door after being connected in parallel.
Preferably, the device further comprises a flue gas condensation reflux device, wherein the flue gas condensation reflux device comprises a plurality of condensers, and the condensers are respectively arranged at the exhaust port of the asphalt tank and the exhaust port of the heavy oil tank.
In order to solve the technical problems, the invention adopts another technical scheme that: the asphalt mixture stirring and dedusting process comprises the steps that the asphalt mixture stirring and dedusting system is adopted, a batching control device collects dust generated by batching into a powder wrapping oil dedusting device by controlling a batching dust collecting device, dust-containing gas is dedusted by the powder wrapping oil dedusting device to obtain clean gas and recovered powder, the clean gas is discharged, the recovered powder is conveyed to a recovered powder humidifying device, the recovered powder humidifying device humidifies the recovered powder into wet dust, and the wet dust is conveyed away; the control device for discharging and discharging the material collects the fume and dust generated by discharging and discharging to the dust wrapping and removing device by controlling the dust collecting device for discharging and discharging, the gas containing the fume and the dust is sequentially subjected to dust wrapping and removing treatment by the dust wrapping and removing device to obtain clean gas and recovered dust, the clean gas is discharged, the recovered dust is conveyed to the recovered dust humidifying device, the recovered dust humidifying device humidifies the recovered dust into wet dust, and the wet dust is conveyed away.
Compared with the prior art, the invention has the following beneficial effects: the cold material enclosing device and the lane enclosing device prevent dust and smoke from escaping, are beneficial to the concentration of the dust and the smoke, and reduce the noise of equipment operation; the cold material dust collection device and the discharging dust collection device are used for organically collecting dust and smoke to the powder oil-wrapping dust collection device, so that the collection efficiency is high; the powder oil-wrapping device wraps the smoke by using the recovered powder, so that the smoke is prevented from adhering to the side wall of the pipeline and the first bag type dust collector, and the effective treatment of the smoke is realized; the first bag type dust collector effectively filters solid particle dust after the powder is wrapped with oil, and respectively discharges clean air and recovers powder, so that air pollution caused by waste gas is avoided; after the reclaimed powder is humidified by the reclaimed powder humidifying device, wet mud is discharged, and the wet mud pollutes air, so that the reclaimed powder is convenient to further process; the whole system has reasonable design, simple and ingenious process, strong dust and smoke collection organization, high dust and smoke removal efficiency and good treatment effect, and achieves the aim of green and environment-friendly.
Drawings
Fig. 1 is a functional block diagram of an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a batching dust collecting device according to an embodiment of the present invention.
Fig. 3 is a schematic structural view of a discharging smoke dust collecting device according to an embodiment of the present invention.
Fig. 4 is a schematic top view of a discharging and dust collecting device according to an embodiment of the invention.
Fig. 5 is a schematic perspective view of a discharging and dust-absorbing device according to an embodiment of the invention.
Fig. 6 is a schematic top view of a dust collector for oil-in-powder and a humidifying device for reclaimed powder according to an embodiment of the present invention.
Fig. 7 is a schematic perspective view of a dust collector for oil-in-powder and a humidifying device for reclaimed powder according to an embodiment of the present invention.
Fig. 8 is a schematic structural diagram of a flue gas collection device, a flue gas collection device of an oil discharge pool and a flue gas condensation reflux device of an asphalt scale according to an embodiment of the invention.
Reference numerals: 11. a primary aggregate bin; 12. a regeneration bin; 13. virgin aggregate Leng Zhenshai; 14. a raw material drying roller; 15. a reclaimed material drying roller; 20. mixing building; 21. a finished product bin; 22. a waste bin; 31. an asphalt tank; 32. asphalt scale; 33. a heavy oil tank; 34. an oil discharging pool; 100. a batching dust collection device; 110. a cold material enclosure device; 120. a cold material dust collection device; 130. a virgin aggregate enclosure device; 131. a first support frame; 132. a first sealing plate; 133. a second support frame; 134. a second sealing plate; 140. a dust collection device for the raw aggregate; 141. a first dust collection main pipe; 1411. a first dust collection joint; 1412. a second dust collection joint; 1413. a third dust collection joint; 142. a first dust hood body; 143. a first dust collection branch pipe; 144. a first electric damper; 145. a first pneumatic butterfly valve; 146. a first manual butterfly valve; 147. a second dust hood body; 148. a second electric damper; 150. a reclaimed material enclosure device; 151. a third support frame; 152. a third sealing plate; 160. a reclaimed material dust collection device; 161. a second dust collection main pipe; 1611. a fourth dust collection joint; 1612. a fifth dust collection joint; 162. a third dust hood body; 163. a second dust collection branch pipe; 164. a third electric damper; 165. a third pneumatic butterfly valve; 166. a second manual butterfly valve; 200. a discharging smoke dust collecting device; 210. a lane enclosing device; 211. a fourth support frame; 212. a fourth sealing plate; 213. photoelectric induction rolling shutter door; 220. discharging and dust collecting device; 221. a third dust collection main pipe; 2211. a sixth dust collection joint; 2212. a seventh dust collection joint; 2213. a bifurcation tube; 2214. a third dust collection port; 222. a finished product discharging and dust collecting branch pipe; 2221. a first dust collection port; 223. waste discharging and dust collecting branch pipes; 2231. a second dust collection port; 224. a fourth electric damper; 225. a fourth pneumatic butterfly valve; 226. a fifth pneumatic butterfly valve; 227. a fifth electric damper; 300. a powder oil-wrapping dust-removing device; 310. a powder oil-wrapping device; 311. a fourth dust collection main pipe; 3111. vortex pipe joints; 3112. a feed manifold; 312. a powder spraying pipe; 313. a blower; 314. a powder spraying tank; 315. a first impeller feeder; 320. a first bag collector; 321. an induced draft fan; 322. a chimney; 330. a recycling powder tank; 331. a third manual butterfly valve; 332. a second impeller feeder; 333. a fourth manual butterfly valve; 334. a third impeller feeder; 335. a second screw conveyor; 340. a first screw conveyor; 400. a reclaimed powder humidifying device; 410. a fourth impeller feeder; 420. a double-shaft waste powder humidifier; 500. an asphalt scale flue gas collection device; 510. a first flue gas collection tube; 520. a first fume collection hood; 530. a sixth pneumatic butterfly valve; 540. a sixth electric damper; 600. a fume collecting device of the oil discharging pool; 610. a second flue gas collection tube; 620. a second fume collection hood; 630. a seventh pneumatic butterfly valve; 700. and the flue gas condensing and refluxing device.
Detailed Description
In order to make the above features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.
Referring to fig. 1, an asphalt mixture stirring and dedusting system comprises an ingredient dust collecting device 100, a discharging and discharging smoke dust collecting device 200, a powder oil-wrapping and dedusting device 300 and a recovered powder humidifying device 400, wherein the ingredient dust collecting device 100 consists of a cold material enclosing device 110 and a cold material dust collecting device 120, the cold material enclosing device 110 is arranged at the outer side of an ingredient system (generally comprising a cold material bin and a conveying belt), and an air inlet end of the cold material dust collecting device 120 is arranged in the cold material enclosing device 110 in a penetrating manner; the discharging and discharging smoke dust collecting device 200 consists of a lane enclosing device 210 and a discharging and discharging dust collecting device 220, wherein the lane enclosing device 210 is arranged at the bottom channel position of the mixing building 20, and the air inlet end of the discharging and discharging dust collecting device 220 is penetrated into the lane enclosing device 210; the powder oil-wrapped dust collector 300 is composed of a powder oil-wrapped device 310 and a first bag type dust collector 320, the air outlet end of the cold material dust collector 120 is connected to the air inlet end of the powder oil-wrapped device 310, the air outlet end of the discharging dust collector 220 is connected to the air inlet end of the powder oil-wrapped device 310, the air outlet end of the powder oil-wrapped device 310 is connected to the air inlet end of the first bag type dust collector 320, the discharge end of the first bag type dust collector 320 can be connected to the feed end of the recovered powder humidifying device 400 through a first screw conveyor 340, and the burdening dust collector 100, the discharging dust collector 200, the powder oil-wrapped dust collector 300 and the recovered powder humidifying device 400 are all electrically connected to a control device. Wherein, the control device is preferably but not limited to Siemens PLC, such as S7-300, S7-400, etc.; the first baghouse 320 is preferably, but not limited to, a BDM-360 pulse blowback baghouse.
In this embodiment, referring to fig. 1 and 2, the cold material enclosing device 110 includes a raw aggregate enclosing device 130, where the raw aggregate enclosing device 130 includes a first support frame 131 and a plurality of first sealing plates 132 fixed on the first support frame 131, the first support frame 131 is disposed around a row of raw aggregate bins 11, and the first sealing plates 132 enclose the left side, the right side, the back side and the top side of the row of raw aggregate bins 11; the cold material dust collection device 120 comprises a raw aggregate dust collection device 140, the raw aggregate dust collection device 140 comprises a first dust collection main pipe 141, a plurality of first dust collection cover bodies 142 and a plurality of first dust collection branch pipes 143, the air outlet end of the first dust collection main pipe 141 is connected to the air inlet end of the powder oil wrapping device 310 through a first electric air door 144, the first dust collection main pipe 141 penetrates through the raw aggregate enclosing device 130 and is fixed on the first support frame 131, a plurality of first dust collection joints 1411 and a plurality of second dust collection joints 1412 are arranged on the side wall of the first dust collection main pipe 141, the first dust collection joints 1411 are connected with the air outlet ends corresponding to the first dust collection cover bodies 142 through first air butterfly valves 145, the air inlet ends of the first dust collection cover bodies 142 face the upper side of the feed inlets corresponding to the raw aggregate bins 11, the second dust collection joints 1412 are connected with the air outlet ends corresponding to the first dust collection branch pipes 143, the air outlet ends of the first dust collection bin 11 are located beside the first air butterfly valves 146, and the air inlet ends of the first dust collection cover bodies 142 are located beside the first dust collection branch pipes 11.
In this embodiment, referring to fig. 1 and 2, the virgin aggregate enclosure device 130 further includes a second supporting frame 133 and a plurality of second sealing plates 134 fixed on the second supporting frame 133, the second supporting frame 133 is disposed around the virgin aggregate inclined conveyor belt and the virgin aggregate Leng Zhen sieve 13, and the second sealing plates 134 enclose the virgin aggregate inclined conveyor belt and the virgin aggregate Leng Zhen sieve 13; the primary aggregate dust collection device 140 further comprises a second dust collection cover 147, a third dust collection joint 1413 is arranged on the side wall of the first dust collection main pipe 141, the third dust collection joint 1413 is connected to the air outlet end of the second dust collection cover 147 through a second electric air door 148, and the air inlet end of the second dust collection cover 147 is located right above the primary aggregate Leng Zhen sieve 13.
In this embodiment, referring to fig. 1 and 2, the cold material enclosing device 110 further includes a recycling material enclosing device 150, where the recycling material enclosing device 150 includes a third supporting frame 151 and a plurality of third sealing plates 152 fixed on the third supporting frame 151, the third supporting frame 151 is disposed around the row of recycling bins 12, and the third sealing plates 152 enclose the left side, the right side, the back side and the top side of the row of recycling bins 12; the cold material dust collection device 120 further comprises a reclaimed material dust collection device 160, the reclaimed material dust collection device 160 comprises a second dust collection main pipe 161, a plurality of third dust collection cover bodies 162 and a plurality of second dust collection branch pipes 163, the air outlet ends of the second dust collection main pipe 161 are connected to the air outlet end side walls of the first dust collection main pipe 141 through third electric air doors 164, the second dust collection main pipe 161 penetrates through the reclaimed material enclosure device 150 and is fixed on the third support frame 151, the side walls of the second dust collection main pipe 161 are provided with a plurality of fourth dust collection joints 1611 and a plurality of fifth dust collection joints 1612, the fourth dust collection joints 1611 are connected with the air outlet ends of the corresponding third dust collection cover bodies 162 through third pneumatic butterfly valves 165, the third dust collection cover bodies 162 are located above the rear ends of the corresponding reclaimed material bins 12, the air inlet ends of the third dust collection cover bodies 162 face the upper sides of the feed inlets of the corresponding reclaimed material bins 12, the fifth dust collection joints 2 are connected with the air outlet ends of the corresponding second dust collection branch pipes 163, the air outlet ends of the second dust collection branch pipes 163 are located beside the second pneumatic butterfly valves 1611, and the air outlet ends of the second dust collection cover bodies 163 are located beside the second pneumatic butterfly valves 1612.
In this embodiment, in order to further reduce dust diffusion, the first support frame 131 and the third support frame 151 may be provided with dust-proof soft curtains located on the front sides of the corresponding cold storage bins, so as to prevent dust from escaping during loading of the forklift. For the convenience of controlling the work of batching dust collection device 100, the batching system (i.e. each cold feed bin, including primary feed bin and regeneration feed bin) is provided with the sensor that is used for responding to the small forklift and is close to corresponding cold feed bin, sensor electric connection to controlling means, the sensor can be buried pressure sensor, infrared sensor or ultrasonic sensor etc. the forklift triggers the sensor when the material loading, and controlling means controls the pneumatic butterfly valve that corresponds cold feed bin after receiving the signal of sensor, realizes that every cold feed bin independently removes dust and works.
In this embodiment, referring to fig. 3 to 5, the lane enclosing device 210 includes a fourth supporting frame 211 and a plurality of fourth sealing plates 212 mounted on the fourth supporting frame 211, the fourth supporting frame 211 is disposed at a bottom channel position of the mixing tower 20, the fourth sealing plates 212 enclose the left side, the right side and the top side of the bottom channel of the mixing tower 20 to form a lane, two sets of photoelectric induction rolling doors 213 respectively disposed at two ends of the lane are mounted on the fourth supporting frame 211, when a vehicle enters the lane, the photoelectric induction rolling doors 213 are put down, so that both the discharging of the finished product material and the discharging of the waste material are in the sealed space, the escape of dust and asphalt smoke is prevented, and the sucking of dust and smoke is more effectively ensured; the discharging and discharging dust collection device 220 comprises a third dust collection main pipe 221, a plurality of finished product discharging dust collection branch pipes 222 and a plurality of waste product discharging dust collection branch pipes 223, wherein an air outlet end of the third dust collection main pipe 221 is connected to an air inlet end of the powder wrapping device 310 through a fourth electric air door 224, the third dust collection main pipe 221 is arranged in the lane enclosing device 210 in a penetrating mode and is fixed on the fourth support frame 211, a plurality of sixth dust collection joints 2211 and a plurality of seventh dust collection joints 2212 are arranged on two side walls of the air inlet end of the third dust collection main pipe 221, the finished product discharging dust collection branch pipes 222 are connected to the sixth dust collection joints 2211 through fourth pneumatic butterfly valves 225, the finished product discharging dust collection branch pipes 222 are located beside a discharging opening of the finished product bin 21, a plurality of first dust collection openings 2221 are formed in a bottom side wall of the finished product discharging dust collection branch pipes 222, the waste product discharging dust collection branch pipes 223 are connected to the seventh dust collection joints 2212 through fifth pneumatic butterfly valves 226, the waste product discharging dust collection branch pipes 223 are located beside a discharging opening of the waste product bin 22, the waste product discharging dust collection branch pipes 223 are located beside the discharging opening of the waste product bin 22, the waste product discharging dust collection main pipe 221 is provided with a plurality of third main pipe 221, and the third dust collection main pipe 221 is located inside the third side wall 221. Wherein, the lane enclosing device 210 may be provided with a monitoring device therein, and the monitoring device is electrically connected to the control device, so as to facilitate the production personnel to monitor the conditions of on-site discharging of the finished product and discharging of the waste product.
In this embodiment, referring to fig. 2 to 5, a bifurcation 2213 is disposed on a side wall of the third main dust collection pipe 221, and an air outlet end of the bifurcation 2213 may be connected to a burner air inlet of the raw material drying drum 14 through a fifth electric air door 227 and a flue gas conveying pipe (omitted in the drawings) in sequence; when only the finished product bin is discharged, the main component of the smoke is organic matters, and the smoke can be sent into the raw material drying roller 14 for supporting combustion. Wherein, the flue gas outlet of the raw material drying drum 14, the flue gas outlet of the regenerated material drying drum 15 and the flue gas outlet of the stirrer (on the mixing floor, omitted in the drawing) are all connected to a second bag type dust collector (omitted in the drawing), and the discharge port of the second bag type dust collector is connected to the recovered powder storage tank 330 shown in fig. 6 and 7.
In this embodiment, the first supporting frame 131, the second supporting frame 133, the third supporting frame 151 and the fourth supporting frame 211 all adopt steel structures, and the first sealing plate 132, the second sealing plate 134, the third sealing plate 152 and the fourth sealing plate 212 all adopt but are not limited to encaustic tiles, and the first supporting frame 131, the first sealing plate 132, the third supporting frame 151 and the third sealing plate 152 respectively form a three-face closed structure to prevent dust diffusion during feeding and discharging. For lighting, a plurality of transparent windows, which may be aluminum alloy glass windows, may be respectively provided at the left and right sides of the fourth support frame 211.
In this embodiment, referring to fig. 6 and 7, the oil-coating device 310 includes a fourth main dust collection pipe 311, a dust collection pipe 312, a blower 313 and a dust collection tank 314, a vortex pipe joint 3111 is disposed on the fourth main dust collection pipe 311, a feeding branch pipe 3112 disposed on a feeding side of the vortex pipe joint 3111 is disposed on a side wall of the fourth main dust collection pipe 311, a discharging direction of the feeding branch pipe 3112 is parallel to an air outlet direction of the fourth main dust collection pipe 311, a bottom discharging port of the dust collection tank 314 is connected to an air inlet of the dust collection pipe 312 and an air outlet of the blower 313 through a first impeller feeder 315, a discharging port of the dust collection pipe 312 is connected to a side wall of the fourth main dust collection pipe 311, a discharging port of the dust collection tank 314 is parallel to an air outlet direction of the fourth main dust collection pipe 311 through a second impeller feeder 332 and a third manual butterfly valve 331, and a side portion of the collection tank 330 is connected to a first discharging port of the collection tank 330 through a second impeller feeder 332, a fourth impeller feeder 334 and a third manual butterfly valve 333. The diameter of the vortex tube segment 3111 is larger than that of the fourth main dust collection tube 311, and the diameter of the vortex tube segment 3111 is increased, so that the recycled powder for oil wrapping is tangentially sprayed into the fourth main dust collection tube 31, and the sprayed recycled powder and the flue gas form vortex in the vortex tube segment 3111, so that the recycled powder is fully mixed with the flue gas, and the recycled powder wraps oil and liquid substances in the flue gas to form solid substances.
In this embodiment, referring to fig. 6 and 7, the recycled powder humidifying device 400 includes a fourth impeller feeder 410 and a dual-shaft waste powder humidifier 420 (also referred to as dual-shaft dust humidifier), wherein the outlet of the first bag-type dust collector 320 is connected to the inlet of the fourth impeller feeder 410, and the outlet of the fourth impeller feeder 410 is connected to the inlet of the dual-shaft waste powder humidifier 420.
In this embodiment, referring to fig. 8, the asphalt mixture stirring and dust removing system may further include an asphalt scale flue gas collecting device 500 and an oil discharge tank flue gas collecting device 600, where the asphalt scale flue gas collecting device 500 includes a first flue gas collecting pipe 510 and a first flue gas collecting cover 520, an air inlet end of the first flue gas collecting pipe 510 is connected with an air outlet end of the first flue gas collecting cover 520 through a sixth pneumatic butterfly valve 530, the first flue gas collecting cover 520 is located above the asphalt scale 32, the air inlet end of the first flue gas collecting cover 520 faces the asphalt scale 32, the oil discharge tank flue gas collecting device 600 includes a second flue gas collecting pipe 610 and a second flue gas collecting cover 620, the air inlet end of the second flue gas collecting pipe 610 is connected with an air outlet end of the second flue gas collecting cover 620 through a seventh pneumatic butterfly valve 630, the air inlet end of the second flue gas collecting cover 620 is located above the oil discharge tank 34, the air inlet end of the second flue gas collecting cover 620 faces the oil discharge tank 34, and the air outlet end of the first flue gas collecting pipe 510 and the air outlet end of the second flue gas collecting pipe 610 are connected to the oil suction dust removing device 300 through a sixth pneumatic butterfly valve 540.
In this embodiment, referring to fig. 8, the asphalt mixture stirring dust removal system may further include a flue gas condensation and reflux device 700, where the flue gas condensation and reflux device 700 includes a plurality of condensers, and the condensers are respectively installed at the exhaust port of the asphalt tank 31 and the exhaust port of the heavy oil tank 33, and the flue gas generated by the asphalt tank 31 and the heavy oil tank 33 is respectively collected, condensed and refluxed to avoid the environmental pollution caused by the flue gas.
In this embodiment, the air inlet end of the powder-wrapping device 310 may be provided with a three-way pipe, a four-way pipe, etc. to facilitate connection with the air outlet end of the batching dust collecting device 100, the air outlet end of the discharging dust collecting device 200, etc. The batching dust collecting device 100 and the discharging dust collecting device 200 work under the negative pressure of the induced draft fan 321 of the first bag filter 320, and clean gas filtered by the first bag filter 320 can be directly discharged into the atmosphere through the chimney 322.
Referring to fig. 1 to 8, in an asphalt mixture stirring and dedusting process, with the asphalt mixture stirring and dedusting system, a batching control device controls a batching dust collecting device 100 to collect dust generated by batching into a powder-wrapping oil dedusting device 300, dust-containing gas is dedusted by the powder-wrapping oil dedusting device 300 to obtain clean gas and recovered powder, the clean gas is discharged, the recovered powder can be conveyed to a recovered powder humidifying device 400 through a first screw conveyor 340, the recovered powder humidifying device 400 humidifies the recovered powder into wet dust, and the wet dust is conveyed away; the control device for discharging and discharging is used for collecting the smoke and dust generated by discharging and discharging to the powder oil-wrapping dust-removing device 300 by controlling the smoke and dust collecting device 200 for discharging and discharging, the gas containing the smoke and the dust is subjected to powder oil-wrapping dust-removing device 300 and dust-wrapping treatment in sequence to obtain clean gas and recovered powder, the clean gas is discharged, the recovered powder can be conveyed to the recovered powder humidifying device 400 through the first screw conveyor 340, the recovered powder humidifying device 400 is used for humidifying the recovered powder into wet dust, and the wet dust is conveyed away.
The present invention is not limited to the above embodiments, but can be modified, equivalent, and modified in any way by those skilled in the art without departing from the scope of the present invention.
Claims (6)
1. An asphalt mixture stirring dust pelletizing system, its characterized in that: the dust collector comprises a dust collector, wherein the dust collector comprises a dust collector and a first bag-type dust collector, the air inlet end of the dust collector is used for receiving dust generated by ingredients, the air outlet end of the dust collector is connected to the air inlet end of the first bag-type dust collector, the dust collector comprises a fourth dust collection main pipe, a dust pipe, a blower and a dust spraying tank, a vortex pipe joint is arranged on the fourth dust collection main pipe, a feeding branch pipe positioned on the feeding side of the vortex pipe joint is arranged on the side wall of the fourth dust collection main pipe, the discharging direction of the feeding branch pipe is parallel to the air outlet direction of the fourth dust collection main pipe, the bottom discharge port of the dust spraying tank is connected to the powder inlet of the dust pipe and the air outlet of the blower through a first impeller feeder, the discharge port of the dust pipe is connected to the side wall of the fourth dust collection main pipe, and the discharge port direction of the dust pipe is parallel to the air outlet direction of the fourth dust collection main pipe.
2. The asphalt mixture stirring and dedusting system as set forth in claim 1, wherein: the top feed inlet of the powder spraying tank is connected to the first discharge port on the side part of the recovered powder storage tank sequentially through a second impeller feeder and a third manual butterfly valve.
3. The asphalt mixture stirring and dedusting system as set forth in claim 1, wherein: the cold material enclosing device is arranged at the outer side of the batching system, and the air inlet end of the cold material dust collection device is arranged in the cold material enclosing device in a penetrating manner; the air outlet end of the cold material dust collection device is connected to the air inlet end of the powder oil wrapping device.
4. The asphalt mixture stirring and dedusting system as set forth in claim 1, wherein: the device comprises a lane enclosing device and a discharging dust collection device, wherein the lane enclosing device is arranged at the bottom channel position of a mixing building, and the air inlet end of the discharging dust collection device is arranged in the lane enclosing device in a penetrating way; the air outlet end of the discharging and dust collecting device is connected to the air inlet end of the powder oil wrapping device.
5. The asphalt mixture stirring and dedusting system as set forth in claim 1, wherein: the device is characterized by further comprising an asphalt scale smoke collection device and an oil discharge pool smoke collection device, wherein the air outlet ends of the asphalt scale smoke collection device and the oil discharge pool smoke collection device are connected to the air inlet end of the powder oil-wrapping dust removal device.
6. A stirring and dedusting process for asphalt mixture is characterized in that: the asphalt mixture stirring and dedusting system as set forth in any one of claims 1 to 5 is adopted, dust generated by the ingredients is collected into a dust-wrapping and dedusting device during the ingredients, dust-containing gas is dedusted by the dust-wrapping and dedusting device to obtain clean gas and recovered powder, and the clean gas is discharged.
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| CN202310709053.XA CN116623496A (en) | 2018-06-05 | 2018-06-05 | Asphalt mixture stirring and dedusting system and process |
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| CN201810570270.4A CN108532414B (en) | 2018-06-05 | 2018-06-05 | Asphalt mixture stirring environment-friendly treatment system and process |
| CN202310709053.XA CN116623496A (en) | 2018-06-05 | 2018-06-05 | Asphalt mixture stirring and dedusting system and process |
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| CN202310709053.XA Pending CN116623496A (en) | 2018-06-05 | 2018-06-05 | Asphalt mixture stirring and dedusting system and process |
| CN202310709049.3A Pending CN116791436A (en) | 2018-06-05 | 2018-06-05 | Asphalt mixture stirring, dedusting and humidifying system and process |
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| CN109213062A (en) * | 2018-09-18 | 2019-01-15 | 山推建友机械股份有限公司 | A kind of bituminous mixing plant automatic dust removal control system and method |
| CN109513301A (en) * | 2019-01-24 | 2019-03-26 | 福建铁拓机械有限公司 | A kind of bituminous mixing plant entrucking area bitumen flue gas processing system |
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| US6152308A (en) * | 1997-05-29 | 2000-11-28 | Marsulex Environmental Technologies, Llc | Mobile classifier for aggregates |
| EP1367176A1 (en) * | 2002-05-22 | 2003-12-03 | BITELLI S.p.A. | Dust control system for a road working machine |
| US6715702B2 (en) * | 2002-08-14 | 2004-04-06 | Mcpherson Mike | Dust collector for powdered material spreader |
| CN104436957A (en) * | 2014-11-24 | 2015-03-25 | 江苏新中环保股份有限公司 | Adsorbing and separating device for oil contamination in flue gas for dust remover |
| CN205711631U (en) * | 2016-06-15 | 2016-11-23 | 四川人杰筑路机械有限公司 | Environment-friendly type closed asphalt concrete agitation station integrating device |
| CN206986673U (en) * | 2017-04-24 | 2018-02-09 | 福建铁拓机械有限公司 | A kind of asphalt mixing station finished product bin dedusting smoking apparatus |
| CN207221611U (en) * | 2017-09-19 | 2018-04-13 | 徐州翔凯重工科技有限公司 | A kind of environment-friendly type asphalt mixing plant negative pressure dust treatment device |
| CN208293355U (en) * | 2018-06-05 | 2018-12-28 | 福建泉成机械有限公司 | A kind of asphalt stirring environment-friendly disposal system |
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| CN116791436A (en) | 2023-09-22 |
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