High temperature furnace slag utilizes stove
Technical field
The present invention relates to a kind of high temperature furnace slag and utilize stove.
Background technology
Yellow phosphorus is a kind of very important industrial chemicals, be used to produce hundreds of products such as phosphoric acid, agricultural chemicals, washing agent, phosphate fertilizer, be widely used in fertilizer industry, food industry, medical industry, pesticide industry, electronics industry, textile industry, feed industry, glass industry, metallurgical industry and ceramic industry etc. also have critical role in national defense industry.The production principle of yellow phosphorus is that rock phosphate in powder and reducing agent nut coke are played reduction reaction under the high temperature of electric furnace, thereby be reduced into the phosphorus in the phosphorus pentoxide elemental phosphorous, produce a large amount of tail gas simultaneously, the content of carbon monoxide will account for 80-90% in the tail gas, and present tail gas is burnt by emptying substantially.
Phosphorus production is the highly energy-consuming industry, and 1 ton of yellow phosphorus of every production will consume 1.4 ten thousand kilowatt hours electricity and 1.6 tons of carbon at least, and Chinese existing annual capacity is 800,000 tons.Equally, also there is similar problem in industries such as steel-making, aluminium metallurgy, copper metallurgy.Therefore, how reducing the power consumption that resource such as yellow phosphorus is produced, significantly reduce greenhouse gas emission with corresponding, is China's urgent problem.
Summary of the invention
Technical problem to be solved by this invention provides a kind of high temperature furnace slag that can significantly reduce the power consumption of resource production and utilizes stove.
For solving the problems of the technologies described above, high temperature furnace slag of the present invention utilizes stove, comprising: the wind furnace of helical rotation type wind is used for high temperature furnace slag and air from the mineral combustion stove are carried out heat exchange, to obtain high temperature air output; The inwall of described wind furnace is provided with the screw thread of exotic material, with at wind furnace around its central shaft time rotational, the high temperature furnace slag of the charging aperture of wind furnace one end is delivered to the discharging opening of the wind furnace other end.
Further, described wind furnace comprises at least 2 tooth bars being located at furnace body outer wall, is meshed with each tooth bar with gear that drives described wind furnace rotation and at least two pairs of pressure-bearings wheels that are used to support wind furnace that are symmetrically set in the body of heater below by synchronous variable-speed is motor-driven.
Further, wind furnace is that the bottom has conulite or the hollow cylinder that base plate and top have opening; Or described wind furnace constitutes one by hollow cylinder section and conulite section, and the bottom of hollow cylinder section has base plate, and the top of conulite section has opening; For convenient liquid slag in the sedimentation basin is introduced in the wind furnace, charging aperture is to be located at pushing away of described base plate central authorities to pull out the formula charging aperture, and the outer rim of charging aperture is provided with a plurality of air outlets, is provided with each air outlet opposite position and deposits bellows; The air outlet of depositing bellows is used to export described high temperature air.
Further, when the charging aperture of wind furnace stopped charging, described charging aperture was by the movable valve closure by cylinder control; The opening on described wind furnace top is a discharging opening, also is the air inlet of wind furnace, and this air inlet outer end is provided with the deep bead that is used to control the air intake size of cylinder control.
Further, for making behind the described wind furnace carrying high temperature furnace slag not the furnace wall that fusing does not take place and the whole wind stove and accessory has heat-insulating property preferably, be suitable for continuously or intermittent feeding and prevent slag cooling caking in the wind furnace, wind furnace comprises: metal shell body, the spiral type thread of being located at the adiabator layer on the metal shell body inwall and being built into by exotic material.This spiral type thread can make the high temperature furnace slag at the charging aperture place of wind furnace do the rolling type displacement to slag notch at the wind furnace time rotational, is beneficial to make high temperature furnace slag and the abundant heat exchange of air.
Further, the gas circuit at the air inlet of wind furnace and air outlet place is provided with air-introduced machine; Be provided with a plurality of temperature sensors in the described wind furnace, temperature sensor links to each other with PLC; PLC links to each other with described air-introduced machine through motor driving controling circuit; When the temperature in the described wind furnace is higher than default high temperature values, send into the steam vaporizer group for preventing the high temperature air that temperature is too high, PLC controls described air-introduced machine decelerate through motor driving controling circuit, and/or reduces the number of the air-introduced machine under the operating condition; When the temperature in the described wind furnace is lower than default low-temperature values, can generate enough high-temperature steams for guaranteeing the steam vaporizer group, PLC controls described air-introduced machine accelerated service through motor driving controling circuit, and/or the number of the air-introduced machine under the increase operating condition.
The present invention has positive effect with respect to prior art: (1) high temperature furnace slag of the present invention utilizes stove, utilize the wind furnace of helical rotation type wind to carry out heat exchange from the high temperature furnace slag and the air of mineral combustion stove, the high temperature air of wind furnace being exported by the steam vaporizer group is converted to elevated temperature heat steam with water then, send into high pressure tank then and drive the steam turbine generator generating, realize being incorporated into the power networks by the control circuit device that is incorporated into the power networks at last, thereby effectively utilized the waste heat of high temperature furnace slag, can significantly reduce phosphorus, iron, aluminium, the power consumption that resources such as copper are produced, the discharging of energy savings and a large amount of greenhouse gases of corresponding minimizing has good economic benefits and social benefit.(2) among the present invention, wind furnace is in the state around its horizontal middle spindle rotation all the time, and be controlled in the certain-length time of contact of wind furnace inwall and high temperature furnace slag, can prevent that high temperature furnace slag from melting the furnace wall.In addition, wind furnace is a conulite, so the height of the discharging opening of wind furnace is higher relatively, can prevent that liquid high temperature furnace slag from directly flowing out from the discharging opening of wind furnace; The air themperature that is beneficial to simultaneously in the wind furnace is evenly distributed.(3) deposit bellows in the air outlet opposite position setting of wind furnace, can guarantee that the hot blast that wind furnace is sent all delivers to the steam vaporizer group.The air outlet place of contiguous wind furnace has than large space in the wind furnace, can guarantee to have enough high temperature airs to send into the steam vaporizer group.(4) wind furnace is the conulite that the top has opening, and the opening on its top is less relatively, is beneficial to control air intake size, can prevent that also hot-air from overflowing from the opening on described top.
Description of drawings
Fig. 1 utilizes the structural representation of system for high temperature furnace slag among the embodiment 1;
Fig. 2 is the structural representation of mineral combustion stove, sedimentation basin, water scrubber and the settling tank of Fig. 1;
Fig. 3 is the cross-sectional view of wind furnace among Fig. 1;
Fig. 4 is the side view of wind furnace among Fig. 1;
Fig. 5 is the structural representation in mucking machine and mineral preheating and drying room among Fig. 1;
Fig. 6 is the structure chart of steam turbine generator among Fig. 1, high pressure tank and first order steam vaporizer;
Fig. 7 is the structural representation of second, third grade steam vaporizer among Fig. 1;
Fig. 8 is the structural representation of hot-water tower among Fig. 1;
Fig. 9 utilizes the structure diagram of system for high temperature furnace slag among the embodiment 1;
Figure 10 is the cross-sectional view of another kind of wind furnace;
Figure 11 is the cross-sectional view of hollow cylinder formula wind furnace.
Wherein each Reference numeral is: 1--sedimentation basin, 1-1--metallic ore, 2--wind furnace, the 2-1--charging aperture, 2-2--goes out aerofoil, the 2-2-1--air outlet, 2-3--deposits bellows, 2-4--tooth bar, 2-5--gear, 2-6--synchronous variable-speed motor, 2-7--automatic valve, 2-8--pressure-bearing wheel, the 2-9--discharging opening, 2-10--hollow cylinder section, 2-11--conulite section, the 3--mucking machine, 3-1--goes into cinder notch, the 3-2--slag notch, the 3-3--screw rod, 4--air accumulator, 5--steam vaporizer group, 5-1--first order steam vaporizer, 5-2--second level steam vaporizer, 5-3--third level steam vaporizer, the 5-4--combustion chamber, 8--air-introduced machine, 9--steam turbine generator, 10--mineral combustion stove, 11--water scrubber, 12--settling tank, 13--mineral preheating and drying room, 14--cylinder, 15--high-pressure pump, the 16--operating desk, 20--deep bead, 21--hot-water tower.
The specific embodiment
(embodiment 1)
See Fig. 3, the high temperature furnace slag of present embodiment utilizes stove, comprising: the wind furnace 2 of helical rotation type wind is used for high temperature furnace slag and air from mineral combustion stove 10 are carried out heat exchange, to obtain high temperature air output; The inwall of described wind furnace 2 is provided with the screw thread of exotic material, with at wind furnace 2 around its central shaft time rotational, the high temperature furnace slag of the charging aperture 2-1 of wind furnace 2 one ends is delivered to the discharging opening 2-9 of wind furnace 2 other ends.
For wind furnace 2 is realized around its central shaft rotation, described wind furnace 2 comprises at least 2 tooth bar 2-4, being meshed with each tooth bar 2-4 with gear 2-5 that drives described wind furnace 2 rotations and at least two couples of pressure-bearings wheel 2-8 that are used to support wind furnace 2 that are symmetrically set in the body of heater below by synchronous variable-speed motor 2-6 driving of being located at furnace body outer wall.
Described wind furnace 2 has the conulite that base plate and top have opening for the bottom; Charging aperture 2-1 is located at pushing away of described base plate central authorities to pull out the formula charging aperture, and the outer rim of charging aperture 2-1 is provided with a plurality of air outlet 2-2-1, is provided with each air outlet 2-2-1 opposite position and deposits bellows 2-3; The air outlet of depositing bellows 2-3 is used to export described high temperature air.
When the charging aperture 2-1 of wind furnace 2 stopped charging, described charging aperture 2-1 was by the movable valve 2-7 closure by cylinder control; The opening on described wind furnace 2 tops is discharging opening 2-9, also is the air inlet of wind furnace 2, and this air inlet outer end is provided with the deep bead 20 that is used to control the air intake size of cylinder control.
Described wind furnace 2 comprises: metal shell body, the spiral type thread of being located at the adiabator layer on the metal shell body inwall and being built into by exotic material.
See Figure 10, as a kind of alternative embodiment, described wind furnace 2 constitutes one by hollow cylinder section 2-10 and conulite section 2-11.The bottom of hollow cylinder section 2-10 has described base plate, and the top of conulite section 2-11 has described opening; Wind furnace 2 adopts two-stage structure, and wherein hollow cylinder section 2-10 space is relatively large, is suitable for holding more high temperature slag.
See Figure 11, as the alternative embodiment of another kind, described wind furnace 2 integral body are hollow cylinder, are suitable for the working method of continuous feed.
(application examples 1)
On the basis of embodiment 1, see Fig. 1-9, use the high temperature furnace slag that above-mentioned high temperature furnace slag utilizes stove and utilize system to comprise: the wind furnace 2 of helical rotation type wind is used for high temperature furnace slag and air from mineral combustion stove 10 are carried out heat exchange; Steam vaporizer group 5 is used to utilize the high temperature air of wind furnace 2 outputs that water is converted to elevated temperature heat steam; High pressure tank 4 is used to store the elevated temperature heat steam of steam vaporizer group 5 outputs; Steam turbine generator 9 links to each other with high pressure tank 4 and generates electricity, and realizes being incorporated into the power networks by the control circuit device that is incorporated into the power networks at last.
The angle that the inwall of wind furnace 2 is provided with exotic material is the screw thread of 10-60 degree, and the top of wind furnace 2 is discharging opening 2-9; The bottom of wind furnace 2 is provided with charging aperture 2-1; Around its horizontal middle spindle time rotational, described screw thread is delivered to described discharging opening 2-9 and output with the high temperature furnace slag at contiguous charging aperture 2-1 place in the wind furnace 2 at wind furnace 2.
See Fig. 3, wind furnace 2 has the conulite that base plate and top with the sidewall one have opening for the bottom, for convenient liquid slag in the sedimentation basin 1 is introduced in the wind furnace 2, and described charging aperture 2-1 is fixed in pushing away of wind furnace 2 ends to pull out the formula charging aperture; The opening on wind furnace 2 tops is described discharging opening 2-9, also is the air inlet of wind furnace 2, and this air inlet outer end is provided with the deep bead 20 that is used to control the air intake size of cylinder control; The central authorities of base plate have through hole, described charging aperture 2-1 is located in this through hole, be provided with out aerofoil 2-2 between the outer rim of charging aperture 2-1 and this through hole inner ring, go out aerofoil 2-2 and be provided with a plurality of air outlet 2-2-1, be provided with to be enclosed within each air outlet 2-2-1 opposite position and deposit bellows 2-3 on the charging aperture 2-1; The air outlet 2-2-1 that deposits bellows 2-3 links to each other with the high temperature air inlet of steam vaporizer group 5; Deposit bellows 2-3 in the setting of air outlet 2-2-1 opposite position, all deliver to steam vaporizer group 5 with the hot blast of guaranteeing wind furnace 2 is sent.Deposit bellows 2-3 and link to each other, do not rotate with wind furnace 2 with the external support frame.Base plate comprises by metal outer plate, adiabator layer and exotic material layer in outer the reaching.
After high temperature furnace slag falls in the wind furnace 2, rotation along with wind furnace 2, the slag temperature of contiguous charging aperture 2-1 one end is higher than the slag temperature on contiguous wind furnace 2 tops in the wind furnace 2, because described wind furnace 2 adopts conulite, so the space of contiguous charging aperture 2-1 one end is bigger with respect to the space on contiguous wind furnace 2 tops in the wind furnace 2, thereby has guaranteed that air outlet 2-2-1 one end has enough high temperature airs and can send into steam vaporizer group 5; In addition, wind furnace 2 is a conulite, is suitable for regulating the speed of the discharging opening 2-9 discharging of wind furnace 2.
Be to reclaim the metal in the slag, as iron etc., described high temperature furnace slag flows out after being used to precipitate the sedimentation basin 1 of metallic ore 1-1 from mineral combustion stove 10, flow to the charging aperture 2-1 of wind furnace 2.
For utilizing the waste heat of the slag of sending from wind furnace 2, the discharging opening 2-9 below of wind furnace 2 is provided with the mucking machine 3 of helix drum formula, the two ends of mucking machine 3 are respectively equipped with described discharging opening 2-9 opening opposing makes progress goes into cinder notch 3-1 and the slag notch 3-2 that Open Side Down, be provided with in the mucking machine 3 be used to make slag to slag notch 3-2 do the rolling type displacement by motor-driven screw rod 3-3, roll slag under the state, be beneficial to mucking machine 3 in the abundant heat exchange of air-flow; The described mucking machine 3 of one end of going into cinder notch 3-1 in vicinity links to each other with the gas outlet of described steam vaporizer group 5, and the other end of mucking machine 3 has the gas outlet that is used to be connected with mineral preheating and drying room 13; At mucking machine 3 during to the logical desiccant hot gas in mineral preheating and drying room 13, mucking machine 3 go into cinder notch 3-1 and slag notch 3-2 closure.Mineral preheating and drying room 13 comprises the venthole plate 13-1 that is used to stack mineral, and the gas outlet of mucking machine 3 extends to venthole plate 13-1 bottom through breather pipe.
Described steam vaporizer group 5 comprises first order steam vaporizer 5-1, second level steam vaporizer 5-2 and the third level steam vaporizer 5-3 of series connection successively; The bottom of first order steam vaporizer 5-1 is provided with and is used for the further heating and generate the combustion chamber 5-4 that high-temperature steam is sent into air accumulator 4 of the vapours of first order steam vaporizer 5-1 and water, and the bottom of combustion chamber 5-4 links to each other with being used to carry the pipeline by the fuel gas that filters through water scrubber 11 of mineral combustion stove 10 dischargings; The side of combustion chamber 5-4 is the high temperature air inlet of steam vaporizer group 5, links to each other with the pipeline that is used to transport from the high temperature air of wind furnace 2.
The gas outlet of described first order steam vaporizer 5-1 connects the air intake of second level steam vaporizer 5-2, the gas outlet of second level steam vaporizer 5-2 connects the air intake of third level steam vaporizer 5-3, and the gas outlet of third level steam vaporizer 5-3 is the gas outlet of described steam vaporizer group 5; The gas outlet of third level steam vaporizer 5-3 is serially connected with air-introduced machine 8.The water inlet of third level steam vaporizer 5-3 links to each other with the hot-water tower 21 that is used for soft water preheating through high-pressure pump 15; The delivery port of third level steam vaporizer 5-3 links to each other with the water inlet of second level steam vaporizer 5-2, the delivery port of second level steam vaporizer 5-2 links to each other with the water inlet of first order steam vaporizer 5-1, and the high steam outlet of first order steam vaporizer 5-1 connects carries high pressure tank 4; The hot gas input of hot-water tower 21 links to each other with the waste gas outlet of steam turbine generator 9, thereby has effectively utilized the waste heat of the waste gas of steam turbine generator 9.
Be provided with a plurality of temperature sensors in the described wind furnace 2, temperature sensor links to each other with PLC in the operating desk 16; PLC links to each other with described air-introduced machine 8 through motor driving controling circuit; When the temperature in the described wind furnace 2 was higher than default high temperature values, PLC controlled described air-introduced machine 8 decelerates through motor driving controling circuit, and/or reduces the number of the air-introduced machine 8 under the operating condition; When the temperature in the described wind furnace 2 was lower than default low-temperature values, PLC controlled described air-introduced machine 8 accelerated services through motor driving controling circuit, and/or increases the number of the air-introduced machine 8 under the operating condition.
For preventing that when the air outlet 2-2-1 air-out, extraneous air is directly deposited bellows 2-3 through charging aperture 2-1 and air outlet 2-2-1, when the charging aperture 2-1 of wind furnace 2 stopped charging, described charging aperture 2-1 was by the movable valve 2-7 seal closure by cylinder 14 controls; For making the air that enters wind furnace 2 have long heat exchange stroke and realizing abundant heat exchange.
For making described wind furnace 2 can sustain high temperature furnace slag, wind furnace 2 comprises: metal shell body, the spiral type thread of being located at the adiabator layer on the metal shell body inwall and being made of exotic material.This spiral type thread can make the high temperature furnace slag at the charging aperture 2-1 place of wind furnace 2 do the rolling type displacement to slag notch 3-2 at wind furnace 2 time rotationals, is beneficial to make high temperature furnace slag and the abundant heat exchange of air.
As another embodiment, on the tracheae between described wind furnace 2 and the steam vaporizer the group 5 and/or gas outlet of described steam vaporizer group 5 is provided with at least one air-introduced machine 8.Thereby guarantee the high temperature air of wind furnace 2 outputs is introduced steam vaporizer group 5, realize water is converted to the purpose of elevated temperature heat steam.
Described being incorporated into the power networks is meant: the alternating current that steam turbine generator 9 is sent is sent in the electrical network that can use for mineral combustion stove 10.
Obviously, the above embodiment of the present invention only is for example of the present invention clearly is described, and is not to be qualification to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all embodiments.And these belong to conspicuous variation or the change that spirit of the present invention extended out and still are among protection scope of the present invention.