CN108421637B - Comprehensive treatment system for condensation and removal of fine particles in industrial waste gas and utilization of waste heat - Google Patents
Comprehensive treatment system for condensation and removal of fine particles in industrial waste gas and utilization of waste heat Download PDFInfo
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- CN108421637B CN108421637B CN201810119495.8A CN201810119495A CN108421637B CN 108421637 B CN108421637 B CN 108421637B CN 201810119495 A CN201810119495 A CN 201810119495A CN 108421637 B CN108421637 B CN 108421637B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/01—Pretreatment of the gases prior to electrostatic precipitation
- B03C3/014—Addition of water; Heat exchange, e.g. by condensation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/017—Combinations of electrostatic separation with other processes, not otherwise provided for
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/02—Plant or installations having external electricity supply
- B03C3/04—Plant or installations having external electricity supply dry type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/40—Electrode constructions
- B03C3/41—Ionising-electrodes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/40—Electrode constructions
- B03C3/45—Collecting-electrodes
- B03C3/47—Collecting-electrodes flat, e.g. plates, discs, gratings
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Abstract
The invention relates to the technical field of energy conservation and environmental protection, in particular to a comprehensive treatment system for condensing and removing fine particulate matters in industrial waste gas and utilizing waste heat. The invention further improves the removal efficiency of fine particles by combining the water vapor phase change condensation chamber with the unique structure of the electric dust collector.
Description
Technical Field
The invention relates to the technical field of energy conservation and environmental protection, in particular to a comprehensive treatment system for condensing and removing fine particles in industrial waste gas and utilizing waste heat.
Background
A great deal of SO exists in the waste gas generated in the industries of petroleum, chemical industry, steel, electric power, building materials and the likeX、NOXInhalable particles (PM10), particularly fine particles (PM2.5), and the like seriously affect human life and production. Along with the gradual worsening of haze, the atmospheric pollution treatment is not slow, and when the atmospheric pollution is treated, the main tasks of energy conservation and emission reduction of enterprises are to fully utilize waste heat in waste gas and remove fine particulate matters in the waste gas. The number concentration of fine particles in the soot, particularly those below PM10, can reach 99% of the total number concentration, while most current precipitators are not efficient for fine particle removal, and therefore, attention must be paid to the treatment of fine particle pollutants.
Traditional dust removing devices such as a cyclone dust remover, an inertial dust remover and the like have good effect of removing large-particle dust, but have poor effect of treating fine particles; the electrostatic dust collector, the bag type dust collector and the wet dust collector have good treatment effect on fine dust, but the cloth bag of the bag type dust collector needs to be periodically replaced, the cost is high, the bag type dust collector is not suitable for airflow with high humidity, the wet dust collector is easy to block, corrode and the like, and the electrostatic dust collector becomes industrial flue gas treatment equipment which is widely applied at present.
At present, the problem of secondary dust emission is easy to occur when an electrostatic dust collector removes particulate matters, only particulate pollutants with larger particle sizes in waste gas can be removed, and the treatment of fine particulate pollutants and gas pollutants and the recovery of waste heat in the waste gas cannot be helped.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in order to solve the technical problem of common dust removal effect of industrial waste gas in the prior art, the invention provides a comprehensive treatment system for condensing and removing fine particles of industrial waste gas and utilizing waste heat, which fully utilizes the waste heat of the waste gas, wherein one part provides steam for a water-vapor phase change condensation chamber, and the other part enters a waste gas reheater; the fine particles are coagulated and grown up through phase change coagulation, larger particles are settled to a sewage tank, and meanwhile, the fine particles with smaller particle size are further removed by using an electrostatic dust collector.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides an industrial waste gas fine particles thing coagulation desorption and waste heat utilization's integrated processing system, includes waste gas cooler, steam phase transition coagulation room, electrostatic precipitator, desulfurizing tower, waste gas reheater, draught fan and the chimney that sets up according to process sequence from the past backward in proper order, is provided with the waste gas import on the waste gas cooler, is provided with the heat exchanger in the waste gas cooler, the electrostatic precipitator is half honeycomb type dust collection polar plate electrostatic precipitator, half honeycomb type dust collection polar plate electrostatic precipitator includes casing, first corona utmost point and a plurality of half honeycomb dust collection units, is provided with electrostatic precipitator import and electrostatic precipitator export on the both ends of casing respectively, and electrostatic precipitator import and steam phase transition coagulation room are connected, and electrostatic precipitator export and desulfurizing tower are connected, and the first corona utmost point setting of electrostatic precipitator import is close to electrostatic precipitator import department in the casing, and a plurality of half honeycomb dust collection units are crisscross each other and set up in the casing, form circuitous tortuous runner between the half honeycomb unit of gathering dust, every half honeycomb unit of gathering dust includes at least one half honeycomb polar plate of gathering dust and a central corona utmost point, half honeycomb polar plate of gathering dust includes the dull and stereotyped body and two turns over a swash plate, two turn over a swash plate respectively fixed connection on the both sides of the dull and stereotyped body, two turn over and form the flaring between the swash plate, the flaring enlarges from inside to outside gradually, the flaring is towards central corona utmost point, the length direction both ends of half honeycomb polar plate of gathering dust respectively with the casing in upper end and lower extreme fixed connection, electrostatic precipitator import is the X direction to electrostatic precipitator export orientation, the length direction and the X direction of half honeycomb polar plate of gathering dust are mutually perpendicular, the dull and stereotyped body parallels with the X direction, first corona utmost point and central corona utmost.
According to the invention, the dust collecting pole plates in the dust remover are changed into a semi-honeycomb type, and the semi-honeycomb dust collecting units are arranged in a staggered manner, so that tortuous channels are formed among the semi-honeycomb dust collecting units, and condensed waste gas and particulate matters can flow in a tortuous manner among the channels after entering the dust remover, so that double vortex is formed in the air flow in the dust remover, the particle collision probability is effectively improved, the retention time of dust particles is increased, more dust can be adsorbed on the dust collecting pole plates, the dust removing effect is further improved, and secondary dust raising is more effectively prevented; the volume of the electric dust collector is reduced, and the economical efficiency is better.
In order to further improve the dust removal effect, each half-honeycomb dust collection unit comprises two half-honeycomb dust collection pole plates and a central corona electrode, the two half-honeycomb dust collection pole plates are arranged in a centrosymmetric mode through the central corona electrode, and the two half-honeycomb dust collection pole plates are not in contact with each other. The two half-honeycomb dust collecting polar plates are not contacted with each other, so that the number of flow channels is further increased, the retention time of dust particles is prolonged, and the particle collision probability is improved.
Furthermore, the water vapor phase change merging chamber comprises a merging chamber shell, a settling chamber shell is arranged at the lower end of the merging chamber shell, a merging chamber inlet is arranged on the lower part of the merging chamber shell, a merging chamber outlet is arranged at the top of the merging chamber shell, the merging chamber inlet is communicated with the waste gas cooler, the merging chamber outlet is communicated with the inlet of the electric dust collector, the condensing chamber shell is internally provided with a rotational flow blade and a round pipe, the top of the round pipe is fixedly connected with the top in the condensing chamber shell, and the top of pipe and exhaust gas cooler's high-temperature steam export are connected, also can connect the outside high-pressure liquid pipeline mutually, and the bottom of pipe is provided with three evenly distributed's steam nozzle, and three steam nozzle is 120 each other, and the central line of steam nozzle and pipe is 45, and the whirl blade is spiral from supreme the setting of following in the pipe periphery, and the whirl blade still is connected with rotary driving device. The waste gas is required to be coagulated before dust removal, the purpose of coagulation is to coagulate small particles into large particles, so that the subsequent dust removal effect is facilitated, the particles are too small and are not easy to remove.
In order to enable the discharge to be uniform, uniform barbed wires are arranged on the peripheries of the first corona electrode and the central corona electrode, and the tail ends of the barbed wires are flat ends. The tail end of the existing prickle wire is a tip, the charging of particles is influenced by the uneven discharging, and the dust removal effect is poor.
In order to be able to save energy, the exhaust gas cooler is connected to an exhaust gas reheater. The top of the circular tube is connected with a high-temperature steam outlet of the waste gas cooler. High temperature abandonment gets into that the high temperature water after the exhaust gas cooler heat transfer is partly to supply water vapour phase to become to condense the room and provide steam, another part gets into the exhaust gas reheater as the heat source, the cooling water after the exhaust gas reheater heat transfer is offered the exhaust gas cooler again and is regarded as the cooling energy, waste heat cyclic utilization, form waste heat recovery device, the cost is saved, the fine particle thing that wet-type electrostatic precipitator independent action can't be got rid of is got rid of more effectively, also can prevent that the waste gas temperature from crossing air feeder and pipeline frosting and SO that cause excessively3And the problem of acid corrosion is solved.
In order to remove dust on the semi-honeycomb dust collecting pole plate and improve the dust removing effect, a plurality of liquid nozzles are further arranged at the top in the shell and face the semi-honeycomb dust collecting pole plate.
The comprehensive treatment system for condensation and removal of fine particles in industrial waste gas and utilization of waste heat effectively utilizes waste gas waste heat through the waste heat recovery device, circulating water at normal temperature is heated to a steam state, one part of the heated steam provides steam for the water-vapor phase change condensation chamber, the other part of the heated steam enters the waste gas reheater, and waste heat circulation can be carried out, SO that fine particles which cannot be removed under the single action of the wet electric precipitator can be more effectively removed, and frost formation and SO (SO) formation of a blower and a pipeline caused by too low waste gas temperature can be prevented3The invention provides a vapor phase-change coagulation technology, which solves the problem of acid corrosion, fine particles are coagulated and grown in a vapor phase-change coagulation chamber, and the coagulated waste gas is largeThe effluent water sump is fallen into to the particulate matter, and simultaneously, fine particles further is by the desorption of electrostatic precipitator, and the unique structure of steam phase transition coalescence room and electrostatic precipitator combines together for fine particles gets rid of efficiency and further improves.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic structural diagram of a comprehensive treatment system for condensing and removing fine particles in industrial waste gas and utilizing waste heat.
Fig. 2 is a schematic perspective view of an electric precipitator according to the present invention.
Fig. 3 is a top view of an electric precipitator of the present invention.
Fig. 4 is a schematic structural diagram of a semi-honeycomb dust collecting pole plate of an electric dust collector of the invention.
Fig. 5 is a schematic structural view of a first corona electrode of an electric precipitator of the present invention.
Fig. 6 is a front view of the structure of the vapor phase change coalescence chamber of the present invention.
Fig. 7 is a top view of the vapor phase change coalescing chamber of the present invention.
In the figure: 1. the device comprises a waste gas cooler, 1-1 parts of a waste gas inlet, 1-2 parts of a heat exchanger, 2 parts of a water-vapor phase change condensation chamber, 2-1 parts of a condensation chamber shell, 2-2 parts of a settling chamber shell, 2-3 parts of a swirl vane, 2-4 parts of a circular pipe, 2-5 parts of a steam nozzle, 2-6 parts of a condensation chamber inlet, 3 parts of an electric dust remover, 3-1 parts of a shell, 3-2 parts of a first corona electrode, 3-2-1 parts of a barbed wire, 3-3 parts of a runner, 3-4 parts of a semi-honeycomb dust collecting polar plate, 3-4-1 parts of a flat plate, 3-4-2 parts of a turnover inclined plate, 3-4 parts of a flaring, 3-5 parts of a central corona electrode, 4 parts of a desulfurizing tower, 5 parts of a waste gas reheater, 6 parts of a waste gas induced draft fan.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
As shown in figures 1-7, which is the most preferred embodiment of the present invention, a comprehensive treatment system for coagulation and removal of fine particulate matters in industrial waste gas and utilization of waste heat, comprises a waste gas cooler 1, a vapor phase-change coagulation chamber 2, an electric dust remover 3, a desulfurizing tower 4, a waste gas reheater 5, a draught fan 6 and a chimney 7 which are sequentially and serially connected from front to back according to a process sequence, wherein the waste gas cooler 1 is provided with a waste gas inlet 1-1, the waste gas cooler 1 is internally provided with a heat exchanger 1-2, the electric dust remover 3 is a semi-honeycomb type electric dust collector with polar plates, the semi-honeycomb type electric dust collector comprises a shell 3-1, a first corona electrode 3-2 and a plurality of semi-honeycomb dust collecting units, the two ends of the shell 3-1 are respectively provided with an electric dust remover inlet and an electric dust remover outlet, the electric dust remover inlet is connected with the, an outlet of an electric precipitator is connected with a desulfurizing tower 4, a first corona electrode 3-2 at an inlet of the electric precipitator is arranged in a shell 3-1 and close to the inlet of the electric precipitator, a plurality of semi-honeycomb dust collecting units are arranged in the shell 3-1 in a staggered manner, a tortuous flow passage 3-3 is formed between the semi-honeycomb dust collecting units, each semi-honeycomb dust collecting unit comprises at least one semi-honeycomb dust collecting polar plate 3-4 and a central corona electrode 3-5, each semi-honeycomb dust collecting polar plate 3-4 comprises a flat plate body 3-4-1 and two turnover inclined plates 3-4-2, the two turnover inclined plates 3-4-2 are respectively and fixedly connected with two sides of the flat plate body 3-4-1, a flaring 3-4-3 is formed between the two turnover inclined plates 3-4-2, and the flaring 3-4-3 is gradually expanded from inside to outside, the flaring 3-4-3 faces the central corona pole 3-5, two ends of the half-honeycomb dust collecting pole plate 3-4 in the length direction are fixedly connected with the upper end and the lower end in the shell 3-1 respectively, the direction from the inlet of the electric dust collector to the outlet of the electric dust collector is the X direction (the X direction is approximately horizontal), the length direction of the half-honeycomb dust collecting pole plate 3-4 is vertical to the X direction, the flat plate body 3-4-1 is parallel to the X direction, and the first corona pole 3-2 and the central corona pole 3-5 are fixedly connected with the inside of the shell 3-1. The first corona electrode 3-2 and the central corona electrode 3-5 are both negative electrodes.
Each half-honeycomb dust collecting unit comprises two half-honeycomb dust collecting pole plates 3-4 and a central corona electrode 3-5, the two half-honeycomb dust collecting pole plates 3-4 are symmetrically arranged by taking the central corona electrode 3-5 as a center, and the two half-honeycomb dust collecting pole plates 3-4 are not in mutual contact.
The vapor phase change coalescence chamber 2 comprises a coalescence chamber shell 2-1, a sedimentation chamber shell 2-2 is arranged at the lower end of the coalescence chamber shell 2-1, a coalescence chamber inlet is arranged on the lower portion of the coalescence chamber shell 2-1, a coalescence chamber outlet is arranged at the top of the coalescence chamber shell 2-1, the waste gas in the vapor phase change coalescence chamber 2 moves from bottom to top, the coalescence chamber inlet is communicated with a waste gas cooler 1, the coalescence chamber outlet is communicated with an electric precipitator inlet, swirl vanes 2-3 and round pipes 2-4 are arranged in the coalescence chamber shell 2-1, the tops of the round pipes 2-4 are fixedly connected with the tops in the coalescence chamber shell 2-1, the tops of the round pipes 2-4 are connected with external steam, three steam nozzles 2-5 which are uniformly distributed are arranged at the bottom of the round pipes 2-4, the three steam nozzles 2-5 are 120 degrees, the central lines of the steam nozzles 2-5 and the circular tubes 2-4 are 45 degrees, the rotational flow blades 2-3 are spirally arranged on the peripheries of the circular tubes 2-4 from bottom to top in a surrounding manner, the rotational flow blades 2-3 are also connected with a rotary driving device, the rotary driving device can be a motor-driven rotary table, and the rotational flow blades 2-3 are fixedly connected with the rotary table.
The peripheries of the first corona electrode 3-2 and the central corona electrode 3-5 are both provided with uniform barbed wires 3-2-1, and the tail ends of the barbed wires 3-2-1 are flat ends. The exhaust gas cooler 1 is connected with the exhaust gas reheater 5, and the top of the circular tube 2-4 is connected with the high-temperature steam outlet of the exhaust gas cooler 1. The top inside the housing 3-1 is also provided with a plurality of liquid nozzles. A support can be arranged at the top in the shell 3-1, the liquid nozzle is fixed on the support, the spraying direction is downward, and the upper end of the semi-honeycomb dust collecting polar plate 3-4 in the length direction is fixedly connected with the support.
According to the comprehensive treatment system for condensation and removal of fine particles in industrial waste gas and utilization of waste heat, high-temperature waste gas firstly enters the waste gas cooler 1 from the waste gas inlet 1-1, the waste gas enters the water vapor phase-change condensation chamber 2 after heat exchange and temperature reduction, and particles in the waste gas are condensed in the water vapor phase-change condensation chamber 2. The waste gas is required to be coagulated before dust removal, the purpose of coagulation is to coagulate small particles into large particles, so that the subsequent dust removal effect is facilitated, the particles are too small and are not easy to remove, in order to improve the coagulation effect, the invention can keep sufficient steam quantity by arranging three nozzles and uniformly, so that fine particles and steam are fully coagulated, the turbulence intensity of gas can be improved by arranging the rotary swirl blades, the collision probability of the particles is further improved, the time of the particles in the steam phase change coagulation chamber 2 is prolonged, more coagulation effects are improved, the rotary swirl blades can throw large particles falling on the blades to the shell of the dust remover, and then the large particles flow to the settling chamber, so that the primary dust removal effect can be achieved, and the coagulation efficiency can also be improved.
The waste gas after coagulation and treatment enters the electric dust collector 3, the dust collecting polar plates in the electric dust collector 3 are changed into a semi-honeycomb type, the semi-honeycomb dust collecting units are arranged in a staggered mode, so that tortuous runners 3-3 are formed among the semi-honeycomb dust collecting units, and the coagulated waste gas and particulate matters can flow in a tortuous mode among the runners 3-3 after entering the electric dust collector 3, so that the air flow in the electric dust collector 3 forms double vortex, the particle collision probability is effectively improved, the dust particle retention time is prolonged, more dust can be adsorbed on the dust collecting polar plates, the dust collection effect is further improved, and secondary dust raising is more effectively prevented; the volume of the electric dust collector is reduced, and the economical efficiency is better.
And then the dedusted waste gas enters a desulfurizing tower 4 for desulfurization, then enters a waste gas reheater 5 for reheating, and finally an induced draft fan 6 and a chimney 7 are discharged into the air, wherein the induced draft fan 6 is also a power source for the waste gas. The steam phase of partly feedwater vapor phase after the heat transfer of exhaust gas cooler 1 becomes to congeal room 2 and provides steam, and another part gets into exhaust gas reheater 5 as the heat source, and the cooling water after the heat transfer of exhaust gas reheater 5 provides exhaust gas cooler 1 again as the cooling energy, and waste heat cyclic utilization forms waste heat recovery device, practices thrift the cost, and the fine particle thing that can't get rid of is acted on alone to the more effective wet-type electrostatic precipitator of desorption. Through waste heat recovery device effective utilization waste gas waste heat, to the circulating water heating to the steam state under the normal atmospheric temperature, steam partly after the heating provides steam for steam phase transition coalescence room 2, and another part gets into the exhaust gas reheater, carries out waste heat circulation and can effectively desorption wet-type electrostatic precipitator fine particle thing that the exclusive action can't be got rid of, also can prevent that exhaust gas temperature from crossing air feeder and pipeline that leads to the fact excessively frosting and SO3And the problem of acid corrosion is solved.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (5)
1. The utility model provides an industrial waste gas fine particles thing is congealed and desorption and waste heat utilization's integrated processing system which characterized in that: comprises a waste gas cooler (1), a water vapor phase change condensation chamber (2), an electric dust remover (3), a desulfurizing tower (4), a waste gas reheater (5), an induced draft fan (6) and a chimney (7) which are sequentially connected in series from front to back according to the process sequence, wherein a waste gas inlet (1-1) is arranged on the waste gas cooler (1), a heat exchanger (1-2) is arranged in the waste gas cooler (1),
the electric dust collector (3) is a half-honeycomb type dust collecting polar plate electric dust collector, the half-honeycomb type dust collecting polar plate electric dust collector comprises a shell (3-1), a first corona pole (3-2) and a plurality of half-honeycomb dust collecting units, an electric dust collector inlet and an electric dust collector outlet are respectively arranged at two ends of the shell (3-1), the electric dust collector inlet is connected with a vapor phase condensation chamber (2), the electric dust collector outlet is connected with a desulfurizing tower (4), the first corona pole (3-2) at the electric dust collector inlet is arranged in the shell (3-1) and close to the electric dust collector inlet, the half-honeycomb dust collecting units are arranged in the shell (3-1) in a staggered mode, and a circuitous flow passage (3-3) is formed between the half-honeycomb dust collecting units,
each semi-honeycomb dust collecting unit comprises two semi-honeycomb dust collecting pole plates (3-4) and a central corona pole (3-5), each semi-honeycomb dust collecting pole plate (3-4) comprises a flat plate body (3-4-1) and two turnover inclined plates (3-4-2), the two turnover inclined plates (3-4-2) are respectively and fixedly connected with two sides of the flat plate body (3-4-1), a flared opening (3-4-3) is formed between the two turnover inclined plates (3-4-2), the flared opening (3-4-3) is gradually enlarged from inside to outside, the flared opening (3-4-3) faces towards the central corona pole (3-5), two ends of the semi-honeycomb dust collecting pole plates (3-4) in the length direction are respectively and fixedly connected with the upper end and the lower end in the shell (3-1), the direction from the inlet of the electric dust collector to the outlet of the electric dust collector is the X direction, the length direction of the half-honeycomb dust collecting pole plates (3-4) is vertical to the X direction, the flat plate body (3-4-1) is parallel to the X direction, the first corona pole (3-2) and the central corona pole (3-5) are fixedly connected with the inside of the shell (3-1), the two half-honeycomb dust collecting pole plates (3-4) are symmetrically arranged by taking one central corona pole (3-5) as the center, and the two half-honeycomb dust collecting pole plates (3-4) are not in contact with each other.
2. The comprehensive treatment system for industrial waste gas fine particle coagulation and removal and waste heat utilization as claimed in claim 1, characterized in that: the vapor phase change coalescence chamber (2) comprises a coalescence chamber shell (2-1), a sedimentation chamber shell (2-2) is arranged at the lower end of the coalescence chamber shell (2-1), a coalescence chamber inlet is arranged on the lower part of the coalescence chamber shell (2-1), a coalescence chamber outlet is arranged at the top of the coalescence chamber shell (2-1), the coalescence chamber inlet is communicated with the waste gas cooler (1), the coalescence chamber outlet is communicated with the inlet of the electric dust collector,
the condensing chamber is characterized in that a cyclone blade (2-3) and a round pipe (2-4) are arranged in the condensing chamber shell (2-1), the top of the round pipe (2-4) is fixedly connected with the top in the condensing chamber shell (2-1), the top of the round pipe (2-4) is connected with external steam, three steam nozzles (2-5) which are uniformly distributed are arranged at the bottom of the round pipe (2-4), the three steam nozzles (2-5) are 120 degrees, the central lines of the steam nozzles (2-5) and the round pipe (2-4) are 45 degrees, the cyclone blade (2-3) is spirally arranged on the periphery of the round pipe (2-4) from bottom to top in a surrounding manner, and the cyclone blade (2-3) is further connected with a rotary driving device.
3. The comprehensive treatment system for industrial waste gas fine particle coagulation and removal and waste heat utilization as claimed in claim 1, characterized in that: the peripheries of the first corona electrode (3-2) and the central corona electrode (3-5) are both provided with uniform barbed wires (3-2-1), and the tail ends of the barbed wires (3-2-1) are flat ends.
4. The comprehensive treatment system for industrial waste gas fine particle coagulation and removal and waste heat utilization as claimed in claim 1, characterized in that: the waste gas cooler (1) is connected with the waste gas reheater (5), and the top of the circular tube (2-4) is connected with a high-temperature steam outlet of the waste gas cooler (1).
5. The comprehensive treatment system for industrial waste gas fine particle coagulation and removal and waste heat utilization as claimed in claim 1, characterized in that: the top in the shell (3-1) is also provided with a plurality of liquid nozzles.
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| CN110411907B (en) * | 2019-06-19 | 2020-05-22 | 上海交通大学 | Method, system and medium for measuring coagulation efficiency of submicron particles on plant leaves |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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