CN204127954U - Gas ignition jet pipe and mineral hot furnace - Google Patents

Gas ignition jet pipe and mineral hot furnace Download PDF

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Publication number
CN204127954U
CN204127954U CN201420402573.2U CN201420402573U CN204127954U CN 204127954 U CN204127954 U CN 204127954U CN 201420402573 U CN201420402573 U CN 201420402573U CN 204127954 U CN204127954 U CN 204127954U
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CN
China
Prior art keywords
gas
pipe
air
combustion
ignition jet
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Application number
CN201420402573.2U
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Chinese (zh)
Inventor
关兴旺
关珍旺
关越
张国庆
郭云奇
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宝鸡市晋旺达机械设备有限公司
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Priority to CN201420402573.2U priority Critical patent/CN204127954U/en
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Publication of CN204127954U publication Critical patent/CN204127954U/en

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Abstract

Gas ignition jet pipe and mineral hot furnace, gas ignition jet pipe stretches in mineral hot furnace, and it comprises combustion-aid air pipe; Be arranged at the gas pipe in combustion-aid air pipe; Be arranged at the gaseous mixture shower nozzle bottom gas pipe, gaseous mixture shower nozzle comprises nozzle body and spiral air flow adjustable plate, nozzle body comprises convergent part and diffusion part, spiral air flow adjustable plate is arranged at intervals on convergent part outer wall, diffusion part is arranged at intervals with venthole, and diffusion part forms the end face of giving vent to anger of combustion-aid air pipe; Air duct is formed between the inwall of combustion-aid air pipe and the outer wall of gas pipe, gas pipe inner chamber is gas passage, air duct is taken over air and is communicated with, gas passage is communicated with Joint pipe for gas, gas mixing zone is formed below gaseous mixture shower nozzle, coal gas is expelled to gas mixing zone from gas passage through nozzle body inner chamber, and air is expelled to gas mixing zone from air duct through the venthole of diffusion part.The utility model passes into fuel gas by gas ignition jet pipe in mineral hot furnace, keeps in-furnace temperature, realizes energy-saving and emission-reduction.

Description

Gas ignition jet pipe and mineral hot furnace
Technical field
The utility model belongs to technical field of metallurgical equipment, particularly relates to the gas ignition jet pipe used in a kind of mineral hot furnace and mineral hot furnace, and this jet pipe is used for passing into fuel gas and combustion air in mineral hot furnace, and burns after sufficiently mixing to obtain high-energy.
Background technology
Mineral hot furnace is the electric furnace of high melt ore or the metal utilizing electrode arc to produce, be mainly used in ore smelting, its furnace binding is similar with electric furnace arrangement for producing steel, during mineral hot furnace work, electrode lower end is embedded in the starting the arc in furnace charge, except the electric arc between electrode and furnace charge can produce except heat, electric current also can produce sizable heat by charging resistance during furnace charge, and mineral hot furnace utilizes the energy of electric arc and electric current to come smelting metal or non-metallic ore by the heat of furnace charge simultaneously.
Mineral hot furnace, in smelting process, is smelted the mineral aggregate in stove by the electrode starting the arc, and power consumption is very large.In order to energy-saving and emission-reduction, most of area can be carried out in peak times of power consumption and be used electricity in off-peak hours, industrial enterprise can only have a power failure in the period of using electricity in off-peak hours and stop producing, reopen mineral hot furnace after recovering electric power to produce, because temperature all can decline in mineral hot furnace after having a power failure, cause material in stove to freeze, reheat and not only take electricity, and make the production cycle of Flow of Goods and Materials also can be elongated, also can affect smelting quality simultaneously.Therefore, be necessary to research and develop a kind of device that can keep high temperature in mineral hot furnace, shorten the production time, realize the object of power and energy saving.
Summary of the invention
The purpose of this utility model is to provide a kind of gas ignition jet pipe and mineral hot furnace, in mineral hot furnace, pass into combustion gas and combustion air by gas ignition jet pipe, by eddy flow, siphon, coal gas is fully mixed at jet pipe, reach high-energy combustion, to keep in-furnace temperature, shorten the production time.
To achieve these goals, the utility model takes following technical solution:
Gas ignition jet pipe, comprising: combustion-aid air pipe, and described combustion-aid air pipe is connected with external source of air by air adapter; Be arranged at the gas pipe in described combustion-aid air pipe, described gas pipe is connected with outside coal gas source by Joint pipe for gas; Be arranged at the gaseous mixture shower nozzle bottom gas pipe, described gaseous mixture shower nozzle comprises nozzle body and the spiral air flow adjustable plate of hollow tubular, the diffusion part that described nozzle body comprises convergent part and is connected with described convergent part bottom, described spiral air flow adjustable plate is arranged at intervals on described convergent part outer wall, described diffusion part is arranged at intervals with venthole, and described diffusion part forms the end face of giving vent to anger of described combustion-aid air pipe; Air duct is formed between the inwall of described combustion-aid air pipe and the outer wall of described gas pipe, described gas pipe inner chamber is gas passage, described air duct is taken over described air and is communicated with, described gas passage is communicated with described Joint pipe for gas, gas mixing zone is formed below described gaseous mixture shower nozzle, coal gas is expelled to gas mixing zone from gas passage through described nozzle body inner chamber, and combustion air is expelled to gas mixing zone from air duct through the venthole of described diffusion part.
A concrete technical scheme of the utility model gas ignition jet pipe is that described gas mixing zone is positioned at described combustion-aid air pipe bottom.
A concrete technical scheme of the utility model gas ignition jet pipe is that described spiral air flow adjustable plate is obliquely installed.
A concrete technical scheme of the utility model gas ignition jet pipe is that described venthole is inclined hole.
A concrete technical scheme of the utility model gas ignition jet pipe is, also comprise outer cooling tube, described combustion-aid air pipe is arranged in described outer cooling tube, cooling water circulation passage is formed between the inwall of described outer cooling tube and the outer wall of described combustion-aid air pipe, described outer cooling tube is provided with and the cooling water inlet pipe of described cooling water circulation channel connection and cooling water outlet tube, described cooling water inlet pipe and cooling water outlet tube and external refrigeration water circulation channel system connectivity.
A concrete technical scheme of the utility model gas ignition jet pipe is that described combustion-aid air pipe is stretched out in the upper end of described gas pipe.
A concrete technical scheme of the utility model gas ignition jet pipe is, described outer cooling tube is stretched out in the upper end of described combustion-aid air pipe.
A concrete technical scheme of the utility model gas ignition jet pipe is, described cooling water inlet pipe is connected with bottom described outer cooling tube, and described cooling water outlet tube is connected with described outer cooling tube top.
A concrete technical scheme of the utility model gas ignition jet pipe is, described cooling water inlet pipe stretches to described outer cooling tube inner bottom part from described outer cooling tube top.
Mineral hot furnace, comprising: aforementioned gas ignition jet pipe; Cupola well, described gas ignition jet pipe stretches in described cupola well above cupola well, and the bottom of described gas ignition jet pipe is positioned at the top of cupola well material.
As shown from the above technical solution, the utility model is by arranging the gas ignition jet pipe stretched in mineral hot furnace cupola well, fuel gas is passed in cupola well, coal gas is expelled to gas mixing zone from gas passage through nozzle body inner chamber, combustion air discharges through the venthole of diffusion part the mid point converging to gas mixing zone from combustion air passage, form uniform mist, make fuel gas Thorough combustion in cupola well, thus the hot environment in maintenance cupola well, accelerate smelting process, also can be incubated simultaneously, thus reach the effect of energy-saving and emission-reduction.The utility model also can be used in and other field of lighting a fire relevant, as sintering electric fire with improved internal, fools dry stove etc.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model gas ignition jet pipe.
Fig. 2 is the sectional view of the utility model gas ignition jet pipe.
Fig. 3 is the top view of the utility model gas ignition jet pipe.
Fig. 4 is the upward view of the utility model gas ignition jet pipe.
Fig. 5 is the structural representation of gaseous mixture shower nozzle.
Fig. 6 is the top view of gaseous mixture shower nozzle.
Fig. 7 is the sectional view of gaseous mixture shower nozzle.
Fig. 8 is the structural representation of the utility model mineral hot furnace.
Fig. 9 is the structural representation of another embodiment of the utility model gas ignition jet pipe.
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in more detail.
Detailed description of the invention
As shown in Figures 1 to 4, the gas ignition jet pipe of the present embodiment comprises outer cooling tube 1, middle level combustion-aid air pipe 2, internal layer gas pipe 3, the top of outer cooling tube 1 is provided with top board 11, and bottom is provided with annular base plate 12, and middle level combustion-aid air pipe 2 top is provided with flanged plate 21.Wherein, middle level combustion-aid air pipe 2 is arranged in outer cooling tube 1, and upper end passes outer cooling tube 1, and middle level combustion-aid air pipe 2 is communicated with air adapter 2-1, air adapter 2-1 is connected with external source of air, for passing into combustion air in middle level combustion-aid air pipe 2.Internal layer gas pipe 3 is arranged in middle level combustion-aid air pipe 2, and upper end passes middle level combustion-aid air pipe 2, and internal layer gas pipe 3 is communicated with Joint pipe for gas 3-1, and Joint pipe for gas 3-1 is connected with outside coal gas source, for passing into coal gas in inner layer gas pipe 3.The bottom of internal layer gas pipe 3 is provided with gaseous mixture shower nozzle 5, gaseous mixture shower nozzle 5 is positioned at middle level combustion-aid air pipe 2, gaseous mixture shower nozzle 5 is hollow tube, its inner chamber is communicated with internal layer gas pipe 3, outer wall forms the end face of giving vent to anger of middle level combustion-aid air pipe 2, and gas pipe bottom does not extend to combustion-aid air pipe bottom, forms gas mixing zone D in middle level combustion-aid air pipe 2 below gaseous mixture shower nozzle 5, after air and coal gas mix in gas mixing zone, discharge from igniting jet pipe.As a preferred embodiment of the present utility model, internal layer gas pipe 3 top is provided with sight glass 4, by the combustion case of sight glass 4 observable gas ignition jet pipe Exhaust Gas.Outer cooling tube 1 is provided with and the cooling water inlet pipe 1-1 of outer cooling tube inner space and cooling water outlet tube 1-2, cooling water inlet pipe 1-1 is communicated with external refrigeration water circulation system with cooling water outlet tube 1-2, cooling water enters outer cooling tube from cooling water inlet pipe 1-1, discharge from cooling water outlet tube 1-2, preferably, cooling water inlet pipe 1-1 stretches to the bottom of outer cooling tube 1 downwards from outer cooling tube 1 top, cooling water outlet tube 1-2 is arranged at outer cooling tube 1 top, namely its water inlet is positioned at outer cooling tube 1 inner top, cooling water inlet pipe is connected with bottom outer cooling tube, cooling water outlet tube is connected with outer cooling tube top, adopt the endless form of low in and high out.
The cooling water circulation passage A of the cooling water that circulates is formed between the inwall of outer cooling tube 1 of the present utility model and the outer wall of middle level combustion-aid air pipe 2, cooling water inlet pipe 1-1 and cooling water outlet tube 1-2 is communicated with cooling water circulation passage A, cooling water passes in cooling water circulation passage A through cooling water inlet pipe 1-1, a cooling layer is formed in igniting jet pipe outer ring, because gas ignition jet pipe is positioned at mineral hot furnace, mineral hot furnace inside is the environment of a unusual high temperature, be positioned at outermost cooling water circulation passage A to lower the temperature to gas ignition jet pipe, be conducive to increasing the service life on the one hand, also production safety can be ensured on the other hand.Because the temperature of bottom in mineral hot furnace is higher than the temperature on top, cooling water adopts the endless form of low in and high out, and first low-temperature cooling water passes into the higher bottom of temperature, then discharges from top, and cooling efficiency is higher.The air duct B of the combustion air that circulates is formed between the inwall of middle level combustion-aid air pipe 2 and the outer wall of internal layer gas pipe 3, internal layer gas pipe 3 inner chamber is the gas passage C of circulation coal gas, air adapter 2-1 is communicated with air duct B, Joint pipe for gas 3-1 is communicated with gas passage C, coal gas in gas passage C discharges from gaseous mixture shower nozzle 5 inner chamber bottom internal layer gas pipe 3, and the air in air duct B discharges through gaseous mixture shower nozzle 5 outer wall as its end face of giving vent to anger.Because coal gas is as fuel gas, within the scope of finite concentration, run into burning things which may cause a fire disaster can explode, the utility model adopts inner layer pipe ventilating coal gas, outer layer pipe leads to combustion air, because air pressure is greater than gas pressure, can avoid when pipeline occurs to leak because of reasons such as weld seams, coal gas can not directly leak in cupola well, but enter cupola well with gaseous mixture, in order to Thorough combustion, thus ensure production safety.
With reference to Fig. 5, Fig. 6 and Fig. 7, gaseous mixture shower nozzle 5 of the present utility model comprises nozzle body 5-1 and spiral air flow adjustable plate 5-2, nozzle body 5-1 is hollow tubular, comprise convergent part 5-1a and diffusion part 5-1b, diffusion part 5-1b is connected with convergent part 5-1a bottom, the inner chamber of convergent part 5-1a is big up and small down, and namely the inlet end of convergent part 5-1a is greater than outlet side, convergent part 5-1a outer wall is provided with circumferentially spiral air flow adjustable plate 5-2 uniformly at intervals.Spiral air flow adjustable plate can make flat board or arc.Diffusion part 5-1b is up-small and down-big taper shape, diffusion part 5-1b is processed with circumferentially venthole 5-1c uniformly at intervals.The inner chamber of nozzle body 5-1 is communicated with internal layer gas pipe 3, and coal gas discharges from nozzle body 5-1 inner chamber.Gaseous mixture shower nozzle 5 is arranged at bottom internal layer gas pipe 3, the diffusion part 5-1b of nozzle body 5-1 forms the end face of giving vent to anger of middle level combustion-aid air pipe 2, and the air in middle level combustion-aid air pipe 2 is discharged by the venthole 5-1c on spiral air flow adjustable plate, diffusion part 5-1b.
As the utility model specific embodiment, in this example, spiral air flow adjustable plate 5-2 is tilting, adopt tilted-putted spiral air flow adjustable plate, the air that gets off is led to through spiral air flow adjustable plate from middle level combustion-aid air pipe 2, owing to being subject to the adjustable diameter and screw adjusting of spiral air flow adjustable plate 5-2, change after airflow direction forms eddy current and just discharge from venthole 5-1c, venthole 5-1c is also inclined hole, the center line of venthole passes the center line of jet pipe, and the air being beneficial to discharge thus forms air-swirl below gaseous mixture shower nozzle.And the inner chamber of convergent part is convergent contour, leads to the coal gas that gets off from internal layer gas pipe 3 after convergent part 5-1a discharges, also concentrate on below gaseous mixture shower nozzle 5, two kinds of gases concentrate on gaseous mixture shower nozzle lower central, good mixing effect, is conducive to realizing Thorough combustion, improves efficiency of combustion.
As shown in Figure 8, gas ignition jet pipe 103 stretches in the cupola well 100 of mineral hot furnace from top, avoid electrode 101 and cloth tube 102, do not affect electrode work and cloth, the bottom of gas ignition jet pipe 103 is positioned at the top of cupola well material, and air and coal gas pass in cupola well by gas ignition jet pipe, burn, can improve and keep in-furnace temperature, thus shortening the heat, reaching energy-conservation effect.And be provided with the mineral hot furnace of gas ignition jet pipe, when having a power failure in case of avoided the peak hour, even if electrode can not work, still in cupola well, pass into fuel gas by gas ignition jet pipe, make gas keep temperature in cupola well combustion, wait when restarting work during incoming call, in-furnace temperature is constant, can continue smelting process immediately without the need to warm, efficiency is high, and metallurgical effect is good.As required, several gas ignition jet pipe can be installed in cupola well.
As shown in Figure 9, Fig. 9 is the structural representation of the another kind of embodiment of the utility model, the gas pipe 3 ' comprising combustion-aid air pipe 2 ' with previous embodiment unlike the gas ignition jet pipe of, the present embodiment and be arranged in combustion-aid air pipe 2 ', combustion-aid air pipe 2 ' does not arrange cooling tube outward.Combustion-aid air pipe 2 ' and gas pipe 3 ' adopt stainless steel to make, be air duct B between combustion-aid air pipe 2 ' inwall and gas pipe 3 ' outer wall, air duct B is communicated with air adapter 2-1, gas pipe 3 ' inner chamber is gas passage C, gas passage C is communicated with Joint pipe for gas 3-1, coal gas and air discharge from gaseous mixture shower nozzle 5 respectively by after gas piping C and comburent air duct B, and mix below gaseous mixture shower nozzle 5, in cupola well combustion after discharge, to keep hot environment in cupola well.
Really, technical conceive of the present utility model is not limited in above-described embodiment, many different concrete schemes can also be obtained according to design of the present utility model, such as, as long as cooling water inlet pipe is communicated with outer cooling tube with cooling water outlet tube, not can only be arranged at outer cooling tube top, conveniently be connected with external air source, the gas pipe of previous embodiment and combustion-aid air pipe stretch out in combustion-aid air pipe and cooling tube from upper end respectively, and air adapter and Joint pipe for gas are all arranged at top, but gas pipe might not stretch out in combustion-aid air pipe, combustion-aid air pipe also might not stretch out cooling tube, air adapter and Joint pipe for gas is only needed to be communicated with gas pipe with combustion-aid air pipe respectively, such as Joint pipe for gas can be connected with gas pipe through combustion-aid air pipe, air adapter can be connected with combustion-aid air pipe through cooling tube, and the shape of gaseous mixture shower nozzle also can need corresponding change according to design, such as these change and equivalent transformation all should be included within the scope described in claim.

Claims (10)

1. gas ignition jet pipe, is characterized in that, comprising:
Combustion-aid air pipe, described combustion-aid air pipe is connected with external source of air by air adapter;
Be arranged at the gas pipe in described combustion-aid air pipe, described gas pipe is connected with outside coal gas source by Joint pipe for gas;
Be arranged at the gaseous mixture shower nozzle bottom gas pipe, described gaseous mixture shower nozzle comprises nozzle body and the spiral air flow adjustable plate of hollow tubular, described nozzle body comprises and convergent part and the diffusion part that is connected with described convergent part bottom, described spiral air flow adjustable plate is arranged at intervals on described convergent part outer wall, described diffusion part is provided with venthole, and described diffusion part forms the end face of giving vent to anger of described combustion-aid air pipe;
Air duct is formed between the inwall of described combustion-aid air pipe and the outer wall of described gas pipe, described gas pipe inner chamber is gas passage, described air duct is taken over described air and is communicated with, described gas passage is communicated with described Joint pipe for gas, gas mixing zone is formed below described gaseous mixture shower nozzle, coal gas is expelled to gas mixing zone from gas passage through described nozzle body inner chamber, and air is from the gas mixing zone of air duct through the venthole discharge of described diffusion part.
2. gas ignition jet pipe according to claim 1, is characterized in that: described gas mixing zone is positioned at described combustion-aid air pipe bottom.
3. gas ignition jet pipe according to claim 1, is characterized in that: described spiral air flow adjustable plate is obliquely installed.
4. gas ignition jet pipe according to claim 1, is characterized in that: described venthole is inclined hole, and the center line of described inclined hole passes the center line of jet pipe.
5. gas ignition jet pipe according to claim 1, it is characterized in that: also comprise outer cooling tube, described combustion-aid air pipe is arranged in described outer cooling tube, cooling water circulation passage is formed between the inwall of described outer cooling tube and the outer wall of described combustion-aid air pipe, described outer cooling tube is provided with and the cooling water inlet pipe of described cooling water circulation channel connection and cooling water outlet tube, described cooling water inlet pipe and cooling water outlet tube and external refrigeration water circulation channel system connectivity.
6. gas ignition jet pipe according to claim 1, is characterized in that: described combustion-aid air pipe is stretched out in the upper end of described gas pipe.
7. gas ignition jet pipe according to claim 5, is characterized in that: described outer cooling tube is stretched out in the upper end of described combustion-aid air pipe.
8. gas ignition jet pipe according to claim 5, is characterized in that: described cooling water inlet pipe is connected with bottom described outer cooling tube, and described cooling water outlet tube is connected with described outer cooling tube top.
9. gas ignition jet pipe according to claim 8, is characterized in that: described cooling water inlet pipe stretches to described outer cooling tube inner bottom part from described outer cooling tube top.
10. mineral hot furnace, is characterized in that, comprising:
Gas ignition jet pipe described in any one of claim 1 to 9;
Cupola well, described gas ignition jet pipe stretches in described cupola well above cupola well, and the bottom of described gas ignition jet pipe is positioned at the top of cupola well material.
CN201420402573.2U 2014-07-21 2014-07-21 Gas ignition jet pipe and mineral hot furnace CN204127954U (en)

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CN201420402573.2U CN204127954U (en) 2014-07-21 2014-07-21 Gas ignition jet pipe and mineral hot furnace

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Application Number Priority Date Filing Date Title
CN201420402573.2U CN204127954U (en) 2014-07-21 2014-07-21 Gas ignition jet pipe and mineral hot furnace

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Publication Number Publication Date
CN204127954U true CN204127954U (en) 2015-01-28

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104110679A (en) * 2014-07-21 2014-10-22 宝鸡市晋旺达机械设备有限公司 Fuel gas ignition jet tube and submerged arc furnace utilizing same
CN104832921A (en) * 2015-04-15 2015-08-12 安徽诚铭热能技术有限公司 Sleeve type dual-guiding burner nozzle
CN104879736A (en) * 2015-05-18 2015-09-02 山东好帮环保科技有限公司 Heat transfer compounding integrated furnace for biomass burning
CN105967146A (en) * 2016-07-11 2016-09-28 南通星球石墨设备有限公司 Gas distribution graphite component for hydrochloric acid synthesis furnace

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104110679A (en) * 2014-07-21 2014-10-22 宝鸡市晋旺达机械设备有限公司 Fuel gas ignition jet tube and submerged arc furnace utilizing same
CN104832921A (en) * 2015-04-15 2015-08-12 安徽诚铭热能技术有限公司 Sleeve type dual-guiding burner nozzle
CN104879736A (en) * 2015-05-18 2015-09-02 山东好帮环保科技有限公司 Heat transfer compounding integrated furnace for biomass burning
CN105967146A (en) * 2016-07-11 2016-09-28 南通星球石墨设备有限公司 Gas distribution graphite component for hydrochloric acid synthesis furnace

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