CN209945043U

CN209945043U - Submerged arc furnace flue gas micro silicon powder recovery system with low carbon emission

Info

Publication number: CN209945043U
Application number: CN201920588003.XU
Authority: CN
Inventors: 房守忠
Original assignee: Ningxia Sanyuan Zhongtai Metallurgical Co Ltd
Current assignee: Ningxia Sanyuan Zhongtai Metallurgical Co Ltd
Priority date: 2019-04-26
Filing date: 2019-04-26
Publication date: 2020-01-14
Anticipated expiration: 2029-04-26

Abstract

The utility model provides a hot stove flue gas silica fume recovery system in ore deposit that low carbon discharges, including the hot stove in ore deposit, exhaust-heat boiler, tower spray cooler, negative-pressure air fan, the sack cleaner, the utility model discloses the tower spray cooler who sets up can avoid large granule dust to get into the sack cleaner, draw and damage the sack, avoid taking fire the charcoal granule to get into the sack cleaner, burn and damage the sack, carbon dioxide in the flue gas and vaporific gas-liquid two-phase fluid intensive mixing, contain alkali lye in the gas-liquid two-phase fluid, alkali lye reacts with carbon dioxide, the emission of carbon dioxide has been reduced, spray cooler cooling ability is strong, take up an area of for a short time, be equipped with the separator box in the steel ball collection device, after the mixture of dust and steel ball can make on the separator box the top and bottom alternately set up multirow rack can make the dust and the clearance between the rack, because, the steel balls and the dust can be fully separated from top to bottom in the whole separation box, and the dust and the steel balls can be fully separated.

Description

Submerged arc furnace flue gas micro silicon powder recovery system with low carbon emission

Technical Field

The utility model relates to a waste heat boiler technical field, in particular to hot stove flue gas silica fume recovery system in ore deposit that low carbon discharged.

Background

The ferrosilicon smelting smoke dust is considered to be smoke dust which seriously pollutes the environment, the submerged arc furnace for smelting ferrosilicon is generally divided into three furnace types, the first type is a fully-closed type, the second type is a semi-closed type with a short smoke hood, and the third type is an open type with a high smoke hood. The semi-closed furnace has large smoke volume, is suitable for heat exchange power generation by adopting a waste heat boiler, has the thermal efficiency of about 26-28 percent, but has the difficulty that the diameter of most dust in the smoke is 0.1-0.5 um, and the particles have different cohesiveness in different temperature areas and humidity and are very easy to adhere to the surfaces of a chimney, a flue and a metal pipe, so that the heat exchange efficiency of a heat exchange surface is reduced sharply. The publication number of the steel ball dust removal type submerged arc furnace waste heat boiler published by the Chinese intellectual property office is CN 101701775A. The invention adopts a steel ball scattering device arranged at the top of a furnace, a steel ball separating and collecting device is arranged below an ash hopper at the bottom of the furnace, the steel ball separating and collecting device conveys the collected steel balls to a steel ball conveying hopper, then the steel ball conveying hopper filled with the steel balls is conveyed to the position above the steel ball scattering device through a circulating type steel ball mechanical conveying device, the steel balls are poured into the steel ball scattering device through the steel ball conveying hopper through a mechanical unloading catch wheel, the steel ball scattering device scatters the steel balls into a waste heat boiler of an ore smelting furnace, and the dust removal is realized by knocking a heating surface through the steel balls with kinetic energy, however, the invention has the following defects: its steel ball separation collection device is poor to the separation effect of dust and steel ball, and dust collection efficiency is not high, and the large granule dust of smuggleing secretly in the smoke and dust and the charcoal granule of bringing with fire can mark the sack cleaner and lose or burn and lose, contain a large amount of carbon dioxide gas in the flue gas, along with the maximization of the hot stove in ore deposit, the emission of carbon dioxide does not change in a small number yet, current cooling arrangement, takes up an area of big, and cooling capacity is not enough.

Disclosure of Invention

In view of the above, it is necessary to provide a low-carbon-emission submerged arc furnace flue gas micro silicon powder recovery system with small floor area and strong cooling capability.

A low-carbon-emission submerged arc furnace flue gas micro silicon powder recovery system comprises a submerged arc furnace, a waste heat boiler, a tower type spray cooler, a negative pressure fan and a bag-type dust remover, wherein the waste heat boiler comprises a boiler heating surface formed by a serpentine pipe group, a boiler flue gas channel with a sealed channel formed around the boiler heating surface, and a furnace bottom arranged at the bottom of the boiler flue gas channel, a steel ball collecting device is arranged at the furnace bottom, a flue gas discharge port of the submerged arc furnace is connected with an upper inlet of the waste heat boiler flue gas channel so as to convey high-temperature flue gas generated by the submerged arc furnace into the waste heat boiler flue gas channel, the steel ball collecting device comprises a separation box, a valve body, a valve core, an inclined flow pipe, a flexible connection, a first connecting rod, a second connecting rod, a third connecting rod and a balancing weight, the upper end and the lower end of the separation box are opened, the upper end of the separation, a plurality of rows of racks are arranged in the separation box from top to bottom, the racks are horizontally arranged columnar bodies, the racks between two adjacent rows are arranged in a staggered manner, one side of the separation box is provided with a smoke outlet, a screen is arranged on the smoke outlet, the screen mesh of the screen is smaller than the diameter of a steel ball, the upper end and the lower end of the valve body are open, the upper end opening of the valve body is connected with the lower end opening of the separation box, one side of the valve body is provided with a steel ball outlet, the steel ball outlet is connected with the inlet of an inclined flow pipe, the outlet of the inclined flow pipe is connected with the inlet of a flexible connection, the outer side wall of the valve core is hermetically connected with the inner side wall of the valve body, the valve core can linearly move up and down along the side wall of the valve body, the top wall of the valve core is obliquely designed, the top wall of the valve, the right end of the second connecting rod is provided with a balancing weight, the middle end of the second connecting rod is rotatably connected with the first rotating shaft, the upper end of the third connecting rod is hinged with the lower end of the first connecting rod, the lower end of the third connecting rod is a free end, the middle end of the third connecting rod is rotatably connected with the second rotating shaft, the tower type spray cooler comprises a tower body, a double-fluid spray gun group, a spray station and an alkaline water pump, an air inlet pipeline is arranged at the top of the tower body, an air outlet pipeline is arranged at the lower part of one side of the tower body, the double-fluid spray gun group is arranged at the upper part of the inner cavity of the tower body, the spray station comprises an air circuit component and a water circuit component, a high-pressure gas inlet of the double-fluid spray gun group is connected with the air circuit component of the spray station so as to provide high-pressure gas for the double-fluid spray gun group through the air circuit component, an alkaline liquid is provided for the double-fluid spray gun, the high-pressure gas and the alkali liquor generate foggy gas-liquid two-phase fluid from the spray opening, the lower part of the inner cavity of the tower body is a sedimentation tank, an inlet of an alkali water pump is connected with the upper part of the sedimentation tank, an outlet of the alkali water pump is connected with a water path component of the spray station so as to convey the alkali water in the sedimentation tank to the water path component of the spray station, and then the alkali water is conveyed to an alkali liquor inlet of a two-fluid spray gun group through the water path component, the two-fluid spray gun group comprises a left two-fluid spray gun and a right two-fluid spray gun, the left two-fluid spray gun and the right two-fluid spray gun are identical in structure, the two-fluid spray gun and the right two-fluid spray gun are symmetrically arranged in the center of the tower body, a smoke outlet is connected with an inlet of an air inlet pipeline of the tower type spray cooler, an outlet of an air.

Preferably, the waste heat boiler further comprises a boiler top arranged at the top of the boiler flue gas channel, a steel ball scattering device is arranged on the boiler top, the steel ball scattering device comprises a scattering and collecting hopper and a steel ball scattering and guiding device, and the steel ball scattering and guiding device is arranged below the scattering and collecting hopper and is connected with an output port of the scattering and collecting hopper; the steel ball scattering guide device comprises a cylindrical pipeline and at least three dispersion pipes; the upper end of the cylindrical pipeline is communicated with an output port of the scattering and collecting hopper, the lower end of the cylindrical pipeline is communicated with one end of each dispersion pipe, and the other ends of the three dispersion pipes are connected with the top of the boiler and communicated with a flue gas channel of the boiler so as to uniformly scatter the steel balls on the heated surface of the boiler.

Preferably, the exhaust-heat boiler further comprises a circulating steel ball conveying device, the circulating steel ball conveying device comprises a driving gear, three driven gears, double rows of chains, a steel ball conveying hopper, a horizontal correcting rod and a reverse rotating wheel, the driving gear and the three driven gears are sequentially arranged at four corners of the supporting frame, the double rows of chains are sequentially wound on the driving gear and the three driven gears to form a closed rectangular chain ring, the steel ball conveying hopper is hung between two chains of the double rows of chains, the steel ball conveying hopper can rotate around the rotating center of the double rows of chains in a vertical plane relatively, the steel ball conveying hoppers are uniformly distributed along the rectangular chain ring, the gravity center of the steel ball conveying hopper deviates to one side of the rotating center of the steel ball conveying hopper, so that the steel ball conveying hopper can restore the state that the opening end of the steel ball conveying hopper faces upwards by virtue of the gravity, and, the horizontal correcting rod is positioned above the horizontal section below the annular part of the rectangular chain, the horizontal correcting rod is horizontally arranged along the length direction of the horizontal section below the annular part of the rectangular chain, two ends of the horizontal correcting rod are bent upwards so as to enable the end surface of the open end of the steel ball conveying hopper on the horizontal section below the annular part of the rectangular chain to be horizontally moved close to the lower part of the horizontal correcting rod, a stirring piece is arranged on the steel ball conveying hopper, the steel ball conveying hopper on the horizontal section below the annular part of the rectangular chain moves rightwards, the stirring piece stirs the free end of the third connecting rod to rotate around a second rotating shaft so as to enable steel balls in a valve body to fall from a steel ball outlet and enter the steel ball conveying hopper through an inclined flow pipe and flexible connection in sequence, the reverse rotating wheel is positioned below the horizontal section above the annular part of the rectangular chain, the steel ball hopper on the horizontal section above the annular part of the rectangular chain moves, so that the steel ball transporting hopper rotates around the rotation center of the double-row chain relatively to the double-row chain, so that the steel balls in the steel ball transporting hopper are poured into the spreading and collecting hopper, and the bottom of the steel ball transporting hopper in a 90-degree reverse rotation state is higher than the top of the reverse rotation wheel, so that the steel ball transporting hopper runs leftwards.

The utility model discloses in, flue gas from exhaust-heat boiler smoke outlet outflow gets into tower spray cooler through the admission line, the diameter of tower body is greater than the diameter of admission line far away, after the flue gas gets into tower spray cooler, speed dip, and simultaneously, the flue gas flows to the sedimentation tank of tower body bottom, after contacting with the liquid level of sedimentation tank, the large granule dust of smuggleing secretly in the flue gas is because inertia is big, get into the sedimentation tank, and the flue gas that contains the dust is 180 reversals in sedimentation tank liquid level department, then discharge through the pipeline of giving vent to anger, avoided the large granule dust to get into the sack cleaner, scratch the loss sack.

The utility model discloses in, the flue gas that flows from exhaust-heat boiler smoke and dust export gets into tower spray cooler through admission line, flue gas and left two fluid spray gun, right two fluid spray gun spun vaporific gas-liquid two-phase fluid intensive mixing, the fire carbon grain of taking that smugglies secretly in the smoke and dust is instantaneously cooled by the gas-liquid two-phase fluid, has avoided taking the fire carbon grain to get into the sack cleaner, burns out the sack. Meanwhile, the carbon dioxide in the flue gas is fully mixed with the vaporous gas-liquid two-phase fluid, the gas-liquid two-phase fluid contains alkali liquor, and the alkali liquor reacts with the carbon dioxide, so that the carbon dioxide is absorbed, and the emission of the carbon dioxide is reduced.

The utility model discloses in, adopt left two-fluid spray gun, the right two-fluid spray gun that the symmetry set up, mutual interference between the vaporific gas-liquid two-phase fluid of two-fluid spray gun, right two-fluid spray gun spun makes vaporific gas-liquid two-phase fluid in the tower spray cooler compare with single two-fluid spray gun, and it is more even to distribute, more is favorable to making the flue gas react with the alkali lye in the vaporific gas-liquid two-phase fluid.

The utility model discloses in, the directional tower internal diapire of fog nozzle of two fluid spray gun groups, flue gas and vaporific gas-liquid two-phase fluid syntropy flow have increased flue gas and vaporific gas-liquid two-phase fluid contact time, and cooling rate is faster.

Drawings

Fig. 1 is a schematic structural diagram of the low-carbon-emission submerged arc furnace flue gas micro silicon powder recovery system.

Fig. 2 is a schematic structural diagram of the waste heat boiler.

FIG. 3 is a schematic structural view of the steel ball collecting device.

In the figure: the waste heat boiler 10, the steel ball collecting device 11, the separating box 111, the rack 1111, the smoke outlet 1112, the valve body 112, the steel ball outlet 1121, the valve core 113, the inclined flow pipe 114, the flexible connection 115, the first connecting rod 116, the second connecting rod 117, the first rotating shaft 1171, the third connecting rod 118, the second rotating shaft 1181, the counterweight 119, the steel ball scattering device 12, the scattering and collecting hopper 121, the steel ball scattering and guiding device 122, the cylindrical pipeline 1221 and the dispersing pipe 1222, the device comprises a circulating type steel ball conveying device 13, a driving gear 131, a driven gear 132, a double-row chain 133, a steel ball conveying hopper 134, a stirring piece 1341, a horizontal correcting rod 135, a reverse rotating wheel 136, an ore furnace 20, a tower type spray cooler 30, a tower body 31, an air inlet pipeline 311, an air outlet pipeline 312, a two-fluid spray gun group 32, a left two-fluid spray gun 321, a right two-fluid spray gun 322, a spray station 33, an alkali water pump 34, a negative pressure fan 40 and a bag-type dust collector 50.

Detailed Description

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Referring to fig. 1 to 3, an embodiment of the present invention provides a low-carbon emission system for recovering fume and micro-silicon powder of an ore-smelting furnace, including an ore-smelting furnace 20, a waste heat boiler 10, a tower-type spray cooler 30, a negative pressure fan 40, and a bag-type dust collector 50, where the waste heat boiler 10 includes a boiler heating surface formed by serpentine pipes, a boiler fume channel forming a sealed channel around the boiler heating surface, and a furnace bottom disposed at the bottom of the boiler fume channel, the furnace bottom is provided with a steel ball collecting device 11, a fume discharge port of the ore-smelting furnace 20 is connected to an upper inlet of the fume channel of the waste heat boiler 10 to convey high-temperature fume generated by the ore-smelting furnace 20 into the fume channel of the waste heat boiler 10, the steel ball collecting device 11 includes a separation box 111, a valve body 112, a valve core 113, an inclined flow pipe 114, a flexible connection 115, a first connection rod 116, a second connection rod 117, a, the upper end opening of the separation box 111 is connected with the lower end opening of the flue gas channel, so that steel ball smoke dust mixture in the flue gas channel enters the separation box 111, a plurality of rows of racks 1111 are arranged in the separation box 111 from top to bottom, the racks 1111 are horizontally arranged columnar bodies, the racks 1111 between two adjacent rows are arranged in a staggered manner, one side of the separation box 111 is provided with a smoke outlet 1112, a screen is arranged on the smoke outlet 1112, the screen mesh of the screen is smaller than the diameter of the steel ball, the upper end and the lower end of the valve body 112 are opened, the upper end opening of the valve body 112 is connected with the lower end opening of the separation box 111, one side of the valve body 112 is provided with a steel ball outlet 1121, the steel ball outlet 1121 is connected with the inlet of the oblique flow pipe 114, the outlet of the oblique flow pipe 114 is connected with the inlet of the flexible connection 115, the outer side wall of the valve core 113 is connected with the inner side, the tower type spray cooler 30 comprises a tower body 31, a double-fluid spray gun group 32, a spray station 33 and an alkaline water pump 34, wherein the top of the tower body 31 is provided with an air inlet pipeline 311, the lower part of one side of the tower body 31 is provided with an air outlet pipeline 312, the upper part of an inner cavity of the tower body 31 is provided with the double-fluid spray gun group 32, the spray station 33 comprises an air channel component and a water channel component, a high-pressure air inlet of the double-fluid spray gun group 32 is connected with a component of the spray station 33, the high-pressure gas is provided for the two-fluid spray gun group 32 through the gas path assembly, an alkali liquor inlet of the two-fluid spray gun group 32 is connected with a water path assembly of the spray station 33, the alkali liquor is provided for the two-fluid spray gun group 32 through the water path assembly, a spray opening of the two-fluid spray gun group 32 points to the inner bottom wall of the tower body 31, the high-pressure gas and the alkali liquor generate atomized gas-liquid two-phase fluid from the spray opening, a sedimentation tank is arranged at the lower part of an inner cavity of the tower body 31, an inlet of an alkali water pump 34 is connected with the upper part of the sedimentation tank, an outlet of the alkali water pump 34 is connected with the water path assembly of the spray station 33, the alkali water in the sedimentation tank is conveyed to the water path assembly of the spray station 33, the alkali water is conveyed to the alkali liquor inlet of the two-fluid spray gun group 32 through the water path assembly, the two-fluid spray gun group 32 comprises a left two-fluid spray, The right double-fluid spray gun 322 is arranged in central symmetry with the tower body 31, the smoke outlet 1112 is connected with the inlet of the inlet pipeline 311 of the tower-type spray cooler 30, the outlet of the outlet pipeline 312 of the tower-type spray cooler 30 is connected with the inlet of the negative pressure fan 40, and the outlet of the negative pressure fan 40 is connected with the inlet of the bag-type dust collector 50.

In this embodiment, the steel balls enter the flue gas channel from the upper portion of the flue gas channel, and dust adhered to the inner wall of the flue gas channel falls off under the impact of the steel balls and then enters the separation box 111 along with the steel balls.

Referring to fig. 2, the lower end of the flexible connection 115 naturally falls, the lower end of the flexible connection 115 directly extends into the bottom of the container, the third link 118 is rotated, the first link 116 is pulled downward, the valve element 113 slides downward along the inner wall of the valve body 112, the valve element 113 reaches below the steel ball outlet 1121, the steel ball enters the steel ball outlet 1121, then enters the flexible connection 115 through the oblique flow tube 114, and then enters the container for containing the steel ball, and the steel ball output by the flexible connection 115 can be very conveniently prevented from jumping out of the container for containing the steel ball.

Referring to fig. 2, when the third connecting rod 118 is rotated without an external force, the second connecting rod 117 is rotated by the weight 119, the first connecting rod 116 is pushed upward, the valve core 113 slides upward along the inner wall of the valve body 112, and the valve core 113 blocks the steel ball outlet 1121.

And lifting the container containing the steel balls to the waste heat boiler 10, and pouring the steel balls into the flue gas channel of the waste heat boiler 10 for ash removal again.

The utility model discloses a be equipped with separator box 111 among the steel ball collection device 11, separator box 111 is last and after the mixture that multirow rack 1111 of crisscross setting down enabled dust and steel ball got into separator box 111, steel ball and dust random access clearance between rack 1111, because steel ball and dust random distribution between multirow rack 1111, this just enables steel ball and dust from the top abundant fraction open in whole separator box 111, be favorable to the dust to discharge from smoke outlet 1112 under negative-pressure air fan 40's effect, and the steel ball is because the relative dust of weight is big very much, get into valve body 112 under the effect of gravity, dust and steel ball can fully separate.

When the atomized gas and the atomized dust particles in the flue gas are combined, the atomized gas and the fine dust particles in the flue gas are condensed into larger particles through collision motion to settle down in the tower body 31, and the dust particles take away certain heat, so that the tower type spray cooler 30 has small floor area and strong cooling capacity compared with other cooling equipment.

The utility model discloses in, the flue gas that flows out from exhaust-heat boiler 10 smoke and dust export 1112 gets into tower spray cooler 30 through admission line 311, the diameter of tower body 31 is greater than the diameter of admission line 311 far away, the flue gas gets into behind tower spray cooler 30, velocity dip, and simultaneously, the flue gas flows to the sedimentation tank of tower body 31 bottom, after contacting with the liquid level of sedimentation tank, the large granule dust of smuggleing secretly in the smoke and dust is because inertia is big, get into the sedimentation tank, and the flue gas that contains the dust is in sedimentation tank liquid level department 180 reversals, then discharge through pipeline 312 of giving vent to anger, avoided the large granule dust to get into sack cleaner 50, scratch the sack.

The utility model discloses in, the flue gas that flows out from exhaust-heat boiler 10 smoke outlet 1112 gets into tower spray cooler 30 through admission line 311, flue gas and left two fluid spray gun 321, right two fluid spray gun 322 spun vaporific gas-liquid two-phase fluid intensive mixing, the fire carbon grain that takes smuggleing secretly in the smoke and dust is instantaneously cooled by the gas-liquid two-phase fluid, has avoided taking the fire carbon grain to get into sack cleaner 50, the burning loss sack. Meanwhile, the carbon dioxide in the flue gas is fully mixed with the vaporous gas-liquid two-phase fluid, the gas-liquid two-phase fluid contains alkali liquor, and the alkali liquor reacts with the carbon dioxide, so that the carbon dioxide is absorbed, and the emission of the carbon dioxide is reduced.

The utility model discloses in, adopt left two-fluid spray gun 321, right two-fluid spray gun 322 that the symmetry set up, mutual interference between the vaporific gas-liquid two-phase fluid of two-fluid spray gun, right two-fluid spray gun 322 spun makes vaporific gas-liquid two-phase fluid in tower spray cooler 30 compare with single two-fluid spray gun, and it is more even to distribute, more is favorable to making the flue gas react with the alkali lye in the vaporific gas-liquid two-phase fluid.

The utility model discloses in, the directional tower body 31 interior diapire of fog nozzle of two fluid spray gun group 32, flue gas and vaporific gas-liquid two-phase fluid syntropy flow have increased flue gas and vaporific gas-liquid two-phase fluid contact time, and cooling rate is faster.

Referring to fig. 1, further, the exhaust-heat boiler 10 further includes a boiler top disposed at the top of the flue gas channel of the boiler, a steel ball scattering device 12 is disposed on the boiler top, the steel ball scattering device 12 includes a scattering and collecting hopper 121 and a steel ball scattering and guiding device 122, the steel ball scattering and guiding device 122 is disposed below the scattering and collecting hopper 121 and connected to an output port of the scattering and collecting hopper 121; the steel ball scattering guide 122 includes a cylindrical pipe 1221 and at least three dispersion pipes 1222; the upper end of a cylindrical pipeline 1221 is communicated with an output port of the scattering and collecting hopper 121, the lower end of the cylindrical pipeline 1221 is communicated with one end of each dispersing pipe 1222, and the other ends of the three dispersing pipes 1222 are connected with the top of the boiler and communicated with a flue gas channel of the boiler so as to uniformly scatter steel balls on the heating surface of the boiler.

Referring to fig. 1, further, the exhaust-heat boiler 10 further includes a circulating steel ball conveying device 13, the circulating steel ball conveying device 13 includes a driving gear 131, three driven gears 132, a double-row chain 133, a steel ball transporting hopper 134, a horizontal correcting rod 135, a reverse rotating wheel 136, the driving gear 131 and the three driven gears 132 are sequentially arranged at four corners of the supporting frame, the double-row chain 133 is sequentially wound around the driving gear 131 and the three driven gears 132 to form a closed rectangular chain ring, a steel ball transporting hopper 134 is hung between two chains of the double-row chain 133, the steel ball transporting hopper 134 can rotate around its rotation center in a vertical plane relative to the double-row chain 133, a plurality of steel ball transporting hoppers 134 are uniformly distributed along the rectangular chain ring, the gravity center of the steel ball transporting hopper 134 is deviated to one side of its rotation center to make the steel ball transporting hopper 134 restore its open end upward state, the horizontal correction rod 135 and the reverse turning wheel 136 are both fixedly arranged on the supporting frame, the horizontal correction rod 135 is positioned above the horizontal section below the annular lower part of the rectangular chain, the horizontal correction rod 135 is horizontally arranged along the length direction of the horizontal section below the annular lower part of the rectangular chain, two ends of the horizontal correction rod 135 are bent upwards so as to enable the end surface of the open end of the steel ball conveying hopper 134 on the horizontal section below the annular lower part of the rectangular chain to be clung to the lower part of the horizontal correction rod 135 to move horizontally, a stirring part 1341 is arranged on the steel ball conveying hopper 134, the steel ball conveying hopper 134 on the horizontal section below the annular lower part of the rectangular chain runs rightwards, the stirring part 1341 stirs the free end of the third connecting rod 118 to rotate around the second rotating shaft 1181 so as to enable steel balls in the valve body 112 to fall down from the steel ball outlet 1121 and enter the steel ball conveying hopper 134 through the inclined flow pipe 114 and the soft connection 115 in sequence, the, the top of the inversion wheel 136 is higher than the bottom of the ball transporting hopper 134 to block the ball transporting hopper 134 from moving leftward so that the ball transporting hopper 134 rotates about its rotational center with respect to the double row chain 133 to dump the balls in the ball transporting hopper 134 into the scattering collecting hopper 121, and the bottom of the ball transporting hopper 134 in the 90 ° inverted state is higher than the top of the inversion wheel 136 so that the ball transporting hopper 134 moves leftward.

The embodiment of the utility model provides a module or unit in the device can merge, divide and delete according to actual need.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a hot stove flue gas silica fume recovery system in ore deposit of low carbon emission which characterized in that: the device comprises an ore-smelting furnace, a waste heat boiler, a tower-type spray cooler, a negative pressure fan and a bag-type dust remover, wherein the waste heat boiler comprises a boiler heating surface consisting of a coiled pipe group, a boiler flue gas channel forming a sealed channel around the boiler heating surface, and a furnace bottom arranged at the bottom of the boiler flue gas channel, the furnace bottom is provided with a steel ball collecting device, a flue gas discharge port of the ore-smelting furnace is connected with an upper inlet of the waste heat boiler flue gas channel so as to convey high-temperature flue gas generated by the ore-smelting furnace into the waste heat boiler flue gas channel, the steel ball collecting device comprises a separation box, a valve body, a valve core, an inclined flow pipe, a flexible connection, a first connecting rod, a second connecting rod, a third connecting rod and a balancing weight, the upper end and the lower end of the separation box are opened, the upper end of the separation box is connected with a lower end opening, the rack is a horizontally arranged columnar body, the racks between two adjacent rows are arranged in a staggered manner, one side of the separation box is provided with a smoke outlet, a screen mesh is arranged on the smoke outlet, the screen mesh of the screen mesh is smaller than the diameter of a steel ball, the upper end and the lower end of the valve body are provided with openings, the upper end opening of the valve body is connected with the lower end opening of the separation box, one side of the valve body is provided with a steel ball outlet, the steel ball outlet is connected with an inlet of an oblique flow pipe, an outlet of the oblique flow pipe is connected with a flexibly connected inlet, the outer side wall of the valve core is hermetically connected with the inner side wall of the valve body, the valve core can linearly move up and down along the side wall of the valve body, the top wall of the valve core is designed to be inclined, the top wall of the valve core extends towards one side of the steel ball outlet, the middle end of the second connecting rod is rotatably connected with the first rotating shaft, the upper end of the third connecting rod is hinged with the lower end of the first connecting rod, the lower end of the third connecting rod is a free end, the middle end of the third connecting rod is rotatably connected with the second rotating shaft, the tower type spray cooler comprises a tower body, a two-fluid spray gun group, a spray station and an alkaline water pump, an air inlet pipeline is arranged at the top of the tower body, an air outlet pipeline is arranged at the lower part of one side of the tower body, the two-fluid spray gun group is installed at the upper part of the inner cavity of the tower body, the spray station comprises an air circuit component and a water circuit component, a high-pressure air inlet of the two-fluid spray gun group is connected with an air circuit component of the spray station so as to provide high-pressure air for the two-fluid spray gun group through the air circuit component, an alkaline liquid inlet of the two-fluid spray gun group is connected with the water circuit component, the high-pressure gas and the alkali liquor generate foggy gas-liquid two-phase fluid from the spray opening, the lower part of the inner cavity of the tower body is a sedimentation tank, an inlet of an alkali water pump is connected with the upper part of the sedimentation tank, an outlet of the alkali water pump is connected with a water path component of the spray station so as to convey the alkali water in the sedimentation tank to the water path component of the spray station, and then the alkali water is conveyed to an alkali liquor inlet of a two-fluid spray gun group through the water path component, the two-fluid spray gun group comprises a left two-fluid spray gun and a right two-fluid spray gun, the left two-fluid spray gun and the right two-fluid spray gun are identical in structure, the two-fluid spray gun and the right two-fluid spray gun are symmetrically arranged in the center of the tower body, a smoke outlet is connected with an inlet of an air inlet pipeline of the tower type spray cooler, an outlet of an.

2. The system for recovering the micro-silicon powder in the flue gas of the submerged arc furnace with low carbon emission according to claim 1, characterized in that: the waste heat boiler also comprises a boiler top arranged at the top of the boiler flue gas channel, a steel ball scattering device is arranged at the boiler top, the steel ball scattering device comprises a scattering and collecting hopper and a steel ball scattering and guiding device, and the steel ball scattering and guiding device is arranged below the scattering and collecting hopper and is connected with an output port of the scattering and collecting hopper; the steel ball scattering guide device comprises a cylindrical pipeline and at least three dispersion pipes; the upper end of the cylindrical pipeline is communicated with an output port of the scattering and collecting hopper, the lower end of the cylindrical pipeline is communicated with one end of each dispersion pipe, and the other ends of the three dispersion pipes are connected with the top of the boiler and communicated with a flue gas channel of the boiler so as to uniformly scatter the steel balls on the heated surface of the boiler.

3. The system for recovering the micro-silicon powder in the flue gas of the submerged arc furnace with low carbon emission according to claim 2, characterized in that: the waste heat boiler also comprises a circulating type steel ball conveying device, the circulating type steel ball conveying device comprises a driving gear, three driven gears, double rows of chains, a steel ball conveying hopper, a horizontal correcting rod and a reverse rotating wheel, the driving gear and the three driven gears are sequentially arranged at four corners of the supporting frame, the double rows of chains are sequentially wound on the driving gear and the three driven gears to form a closed rectangular chain ring, the steel ball conveying hopper is hung between two chains of the double rows of chains, the steel ball conveying hopper can rotate around the rotating center of the steel ball conveying hopper in a vertical plane relatively, the steel ball conveying hoppers are uniformly distributed along the rectangular chain ring, the gravity center of the steel ball conveying hopper deviates to one side of the rotating center of the steel ball conveying hopper, so that the steel ball hopper conveying hopper can restore the state that the opening end of the steel ball hopper faces upwards by virtue of the gravity, the horizontal correcting rod and the reverse rotating wheel are fixedly arranged on, the horizontal correcting rod is horizontally arranged along the length direction of the horizontal section below the annular part of the rectangular chain, two ends of the horizontal correcting rod are bent upwards to enable the end surface of the open end of the steel ball conveying hopper on the horizontal section below the annular part of the rectangular chain to be tightly attached to the lower part of the horizontal correcting rod to move horizontally, a stirring part is arranged on the steel ball conveying hopper, the steel ball conveying hopper on the horizontal section below the annular part of the rectangular chain moves rightwards, the stirring part stirs the free end of the third connecting rod to rotate around a second rotating shaft, so that steel balls in a valve body fall down from a steel ball outlet and enter the steel ball conveying hopper through an inclined flow pipe and a flexible connection in sequence, the reverse rotating wheel is positioned below the horizontal section above the annular part of the rectangular chain, the steel ball conveying hopper on the horizontal section above the annular part of the rectangular chain moves leftwards, the top of the reverse rotating wheel is higher than the bottom of the steel ball conveying hopper, so that the steel balls in the steel ball conveying hopper are poured into the spreading and collecting hopper, and the bottom of the steel ball conveying hopper in a 90-degree reverse rotation state is higher than the top of the reverse rotation wheel, so that the steel ball conveying hopper runs leftwards.