A kind of natural heat dissipation device for magnesium method titanium sponge production
Technical field
It the utility model is related to sponge titanium smelting technical field, and in particular to a kind of nature for magnesium method titanium sponge production
Heat abstractor.
Background technology
Titanium tetrachloride magnesiothermic reduction is a strong exothermic reaction, in reduction production period, the reactor center highest temperature
Degree is more than 1400 DEG C.Failing in time draining waste heat caused by reduction reaction, the interior external quality of titanium sponge will be influenceed,
Charging and reaction rate are reduced, extends titanium sponge production cycle and increase production cost.Reduction reaction present invention device has following
Several sinking paths, inlet and outlet, great Gai, cooling water, furnace shell and furnace bottom etc..Wherein big lid, cooling water, furnace shell and furnace bottom dissipate
Calorific value is geostationary.Domestic titanium sponge production enterprise reduction radiating mode no matter I types stove or U-shaped stove, be all using leading to
Furnace shell wind band is crossed to rousing air discharging and radiating form in reduction furnace naturally, reduces reaction in furnace device temperature;Rapid heat dissipation, but it is uneven to radiate
Even, reduction reaction temperature transient fluctuation is big, and drum exhaust blower starts frequent.Magnesiothermic reduction course of reaction is a strong heat release
Journey, fuel factor is very big, removes that material heat absorption is outer, and the excess heat of release is quite a lot of in adiabatic process, in the reaction not only can be with
By self-heating maintenance reaction.But also waste heat must be excluded, it otherwise can make reactor wall overtemperature, product quality can be influenceed for a long time,
Reduction reaction speed is reduced, so waste heat must be excluded.
A kind of existing Patent No. CN200910102745.8 is entitled《A kind of radiating in sponge titanium producing process by magnesium method
Method》Chinese utility model patent disclose a kind of heat abstractor, the heat abstractor is arranged at reactor and covered greatly, is reducing
When, cooling medium is continuously passed through into heat abstractor, reaches the purpose to be radiated at the big lid of reactor.Utilize above-mentioned side
Method, in titanium sponge reduction, because reaction liquid level temperature is higher, heat is mainly directly radiated by heat radiation in the big lid of reactor
On, the temperature of the big lid of reactor is steeply risen, and cooling medium, cooling medium are constantly passed through from the cooling medium entrance of heat abstractor
Export and flow out from cooling medium, so as to realize effective heat exchange, then reached the radiating effect of reduction process in titanium sponge production
Fruit.But above-mentioned technical proposal Shortcomings, it is only radiated by covering greatly, is radiated the thermal Finite covered greatly first, its
It is secondary limited by covering progress radiating efficiency greatly, therefore effectively the heat in reduction process can not be adjusted with carrying out maneuverability
Section.
Utility model content
The purpose of this utility model is to provide a kind of natural heat dissipation device for magnesium method titanium sponge production, to solve
Radiating efficiency is low in the prior art, the problem of can not adjusting radiating according to reaction process maneuverability.
To achieve the above object, the utility model discloses following technical scheme:
A kind of natural heat dissipation device for magnesium method titanium sponge production, including reduction furnace furnace shell, convection device, the reduction
Wind band is provided with the middle part of stove furnace shell, top is provided with fire door, the convection device include it is at least one set of by upper convection current air port and under
The convection current air port of convection current air port composition, the upper convection current air port are arranged at wind band top, and the lower convection current air port is arranged at wind band
Bottom, the lower convection current air port are connected with air, and the end height in the upper convection current air port is equal to or higher than reduction furnace furnace shell
Highly;
Further, the end height in the upper convection current air port is higher than the height 50-100cm of reduction furnace furnace shell;
Further, the upper convection current air port end is connected with loose joint or blind plate;
Further, the remote stove end pipe open height of upper convection current air port pipeline is higher than the fire door of reduction furnace furnace shell;
Further, the upper convection current inlet number in the convection device is identical with lower convection current inlet number;
Further, the upper convection current inlet number in the convection device is more than lower convection current air port;
Further, the upper convection current air port in every group of convection current air port and lower convection current air port are longitudinally-aligned;
Further, the lower convection current air port is connected with blind plate;
Further, the lower convection current air port and blind plate are detachably connected by screw;
Further, the lower convection current air port is connected by two-port valve with air.
The utility model has the following advantages that:
1) according to reduction furnace wind band, magnesium liquid face altitudes, multiple spot gravity-flow ventilation and the type of furnace and single stove production capacity are combined,
It is determined that ventilation points etc..It can ensure that more waste heat energies shed, reaction in furnace temperature fluctuation amplitude stabilization, expect that speed is steady, reduction is anti-
Best condition is should be at, simple to operate, production is stable, energy-conservation;
2) it is uneven to solve the interior radiating of reduction furnace, rouses air draft naturally and causes reaction temperature transient fluctuation big, product generation speed
Spend uneven, influence product quality, the problems such as high energy consumption.The principle to be floated using air heats expansion, in the wind band of reduction furnace
Upper and lower perforate, as into and out of air port, unnecessary heat is taken away by air flow, ensures being normally carried out for reaction;
3) can be adjusted accordingly into and out of air port heat dissipation capacity according to also original production different phase, in actual production, according to
According to the number of remaining magnesium amount in reactor, reduction process is divided into early stage, mid-term, later stage three phases.Reduction mid-term accounts for whole
The 80%-85% of individual reduction cycle.Using blind plate and loose joint, for reduction early stage and later stage, adjustment waste heat distributes speed and stream
Amount, ensure that radiating is uniform, it is simple and easy;
4) for having established good reaction zone in reduction interim response device, charging rate steps up peak,
A large amount of reaction heat are produced, keep air outlet to be shown in a fully open operation, reduction reactor temperature reaches alarming value and starts two-port valve, when also
Former temperature of reactor drops to safety value, closes two-port valve;The mode of natural heat dissipation is namely taken in reduction reaction mid-term, smoothly
Drain a large amount of waste heats caused by mid-term, it is ensured that magnesium liquid face is between wind band inlet and outlet all the time in reduction mid-term;Coordinate simultaneously
Reducing process system, shortening is taken per defective material feed time and feeding quantity, increase discharge magnesium chloride number.
The technical solution of the utility model coordinates lower convection current air port by adjustable upper convection current air port so that outlet temperature
With flow increase, reactor wall temperature is reduced, reaching reduction reaction speed, radiating in optimum value, reduction furnace is uniform, reacts
Temperature transient fluctuation amplitude stabilization, product formation speed are uniform, production Stability Analysis of Structures, so that quality improves, reduction
Feeding study on period shortens, and effectively reduces cost, saves the energy.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the natural heat dissipation device of the present utility model for magnesium method titanium sponge production.
Embodiment
Following examples are used to illustrate the utility model, but are not limited to the scope of the utility model.
Embodiment 1
As shown in figure 1, a kind of natural heat dissipation device for magnesium method titanium sponge production, including reduction furnace furnace shell 1, convection current dress
Put, the reduction furnace furnace shell middle part is provided with wind band 2, top is provided with fire door 3, and the convection device includes three groups by upper convection current
Air port 4 and the convection current air port of lower convection current air port 5 composition and unnecessary two upper convection current air ports, the upper convection current air port 4 is arranged at
The top of wind band 2, the lower convection current air port 5 are arranged at the bottom of wind band 2, and the lower convection current air port 5 is connected with air;The upper convection current
Air port can be connected by loose joint 6 with the pipeline of continued access, and the height of upper convection current air port end is higher than the fire door of reduction furnace furnace shell
100cm;The end of the pipeline in upper convection current air port can be also connected by loose joint with other pipelines, and the lower convection current air port passes through two-way
Valve is connected with air.
In use, loose joint or blind plate are used in upper convection current air port according to selection is actually needed, to the quantity in upper convection current air port
It is adjusted, and can continues through loose joint according to being actually needed and be connected with other pipelines, two-port valve also can be according to be actually needed choosing
Select unlatching or be not turned on, two-port valve is connected with air and lower convection current air port, can need to select natural heat dissipation according to production.
Embodiment 2
A kind of natural heat dissipation device for magnesium method titanium sponge production, including reduction furnace furnace shell, convection device, the reduction
Stove furnace shell middle part is provided with wind band, top is provided with fire door, and the convection device includes three groups by upper convection current air port and lower convection current
The convection current air port of air port composition and unnecessary two upper convection current air ports, the upper convection current air port is arranged at wind band top, under described
Convection current air port is arranged at wind band bottom, and the lower convection current air port is connected with air;The upper convection current air port can be by loose joint with continuing
The pipeline connection connect, the height of upper convection current air port end are higher than the fire door 50cm of reduction furnace furnace shell;The pipeline in upper convection current air port
End can be also connected by loose joint with other pipelines, and the lower convection current air port is connected by two-port valve with air.Set outside wind band
It is semicircular wind guide tank to be equipped with cross section, and wind guide tank is parallel with wind band, and wind guide tank one end is connected with air blower, the other end with it is big
Gas connects, can into wind guide tank, forced-air blast is radiated to wind band by air blower.
In use, be actually needed selection according to reaction process etc. uses loose joint or blind plate, upper convection current wind in upper convection current air port
Mouth is connected by the pipeline of loose joint and continued access, and can be complete by unwanted upper convection current air port using blind plate according to selection is actually needed
Totally-enclosed, two-port valve can also be opened or be not turned on according to selection is actually needed, and two-port valve is connected with air and lower convection current air port,
It can need to select natural heat dissipation according to production.
Although above having made detailed description to the utility model with generality explanation and specific embodiment,
On the basis of the utility model, it can be made some modifications or improvements, this is apparent to those skilled in the art
's.Therefore, the these modifications or improvements on the basis of without departing from the utility model spirit, belonging to the utility model will
Seek the scope of protection.