CN217727141U - Dynamic hydrogen reduction furnace - Google Patents
Dynamic hydrogen reduction furnace Download PDFInfo
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- CN217727141U CN217727141U CN202220375080.9U CN202220375080U CN217727141U CN 217727141 U CN217727141 U CN 217727141U CN 202220375080 U CN202220375080 U CN 202220375080U CN 217727141 U CN217727141 U CN 217727141U
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Abstract
The utility model discloses a developments hydrogen reduction furnace relates to reduction furnace technical field, including reducing furnace body, boiler tube, hydrogen import and hydrogen export, the boiler tube runs through reducing furnace body and both ends are located reducing furnace body outside, seal installation has hydrogen import and hydrogen export on the boiler tube. The beneficial effects are that: through the design of the alarm device, when the temperature in the reduction furnace body is abnormal, the temperature in the reduction furnace body can be timely prompted to workers, so that the workers can quickly adjust the temperature of the reduction furnace body, and the working efficiency is improved; through the ingenious design of the gas collecting device, when the reduced raw materials are output, the hydrogen in the furnace tube can be collected into the gas collecting chamber in time in advance, so that the hydrogen in the furnace tube is removed, and the phenomena that oxygen in the air enters the furnace tube along the outlet of the boat and the hydrogen detonates or even explodes at high temperature are effectively avoided.
Description
Technical Field
The utility model relates to a reduction furnace technical field especially relates to a developments hydrogen reduction furnace.
Background
In the powder metallurgy industry, a lot of metal powder is prepared by adopting a hydrogen reduction method, and the process generally comprises the steps of introducing hydrogen from the tail of a hydrogen reduction furnace and pushing materials from the head of the furnace. In order to ensure sufficient reduction, excessive flow of hydrogen is needed, and redundant hydrogen can escape; if the redundant hydrogen is not processed in time, explosion can occur, and the potential safety hazard is large; in addition, when the reduction is carried out, when the temperature in the reduction furnace body is abnormal, the staff cannot know the temperature in time, and then the temperature of the reduction furnace body cannot be adjusted quickly, so that the working efficiency is reduced.
Chinese patent No. CN108994312A, "a push boat reduction furnace apparatus and gas supply method", proposes a problem that "the amount of hydrogen gas required to be introduced into the furnace for normal reduction operation is much larger than the amount of hydrogen gas theoretically required for reduction, generally 10 times, but hydrogen gas not involved in reduction is generally burned off by ignition" in the specification, see paragraph 0003. The method specifically discloses a following solution, and solves the problems that when the furnace door is opened for feeding, the pressure difference between the interior of the furnace tube and the atmosphere is zero or unstable, so that the recovery system stops running and the recovery process cannot be smoothly carried out, and reduces the loss of hydrogen when the furnace is opened for feeding through on-off control of a program control valve.
In the production of the patent, excessive hydrogen enters a hydrogen recovery system through a hydrogen return pipeline, but the overall recovery arrangement is more complicated; in addition, the monitoring of the temperature of the reduction furnace body in production is not considered, and the safety defect exists; therefore, the hydrogen reduction furnace is improved by the inventor.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to a dynamic hydrogen reduction furnace for solving the above problems.
The utility model discloses a following technical scheme realizes above-mentioned purpose:
the utility model provides a developments hydrogen reduction furnace, includes reduction furnace body, boiler tube, hydrogen import and hydrogen export, the boiler tube runs through reduction furnace body and both ends and is located the reduction furnace body outside, sealed mounting has hydrogen import and hydrogen export on the boiler tube, hydrogen import and hydrogen export are located reduction furnace body's the left and right sides respectively, install alarm device and heat preservation device in the reduction furnace body, both ends are equipped with boat export and boat entry respectively about the boiler tube, install gas collection device on the boiler tube, gas collection device is located between hydrogen import and the boat export, pneumatic thruster is installed to the right-hand member of boiler tube.
Preferably, the heat preservation device comprises a heat preservation layer and a fire-resistant layer, the heat preservation layer covers the inner wall of the reduction furnace body, and the fire-resistant layer covers the heat preservation layer.
Preferably, alarm device includes controller, temperature sensor, alarm and heater strip, temperature sensor electric connection has the controller, controller electric connection has alarm and heater strip, temperature sensor installs on the flame retardant coating, controller and alarm are installed on the outer wall of reduction furnace body, the heater strip is installed on the flame retardant coating.
Preferably, the boat outlet is located at the leftmost side of the hydrogen inlet, the boat inlet is located at the right side of the hydrogen outlet, and the air thruster is located at the right side of the boat inlet.
Preferably, the gas collecting device comprises a first valve, a vacuum air pump, an air exhaust pipe, a gas collecting chamber, a support rod, a second valve and a third valve, the first valve and the second valve are sequentially arranged on the furnace pipe from right to left, the support rod is fixedly connected to the upper end of the furnace pipe, the gas collecting chamber is fixedly connected to the upper end of the support rod, the right end of the gas collecting chamber is communicated with the furnace pipe through the air exhaust pipe, and the vacuum air pump and the third valve are arranged on the air exhaust pipe.
Preferably, a cooling sleeve is arranged on the furnace tube and is positioned between the first valve and the exhaust tube.
Has the advantages that: through the design of the alarm device, when the temperature in the reduction furnace body is abnormal, the temperature in the reduction furnace body can be timely prompted to workers, so that the workers can quickly adjust the temperature of the reduction furnace body, and the working efficiency is improved; through gas collection device's ingenious design, when the raw materials output after the reduction, can be in advance with the timely collection of the intraductal hydrogen of furnace gas to the gas collection indoor, and then get rid of the hydrogen in the boiler tube, effectively avoided because of the oxygen in the air enters into the boiler tube along the boat export and hydrogen takes place the detonation even explosion accident under high temperature.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive labor.
FIG. 1 is a schematic view of a partial cross-sectional structure of a dynamic hydrogen reduction furnace according to the present invention;
fig. 2 is a schematic diagram of an alarm device of the dynamic hydrogen reduction furnace of the present invention.
The reference numerals are explained below:
1. a reduction furnace body; 2. an alarm device; 201. a controller; 202. a temperature sensor; 203. an alarm; 204. heating wires; 3. a heat preservation device; 301. a heat-insulating layer; 302. a refractory layer; 4. a hydrogen inlet; 5. a furnace tube; 6. a gas collection device; 601. a first valve; 602. a vacuum pump; 603. an air exhaust pipe; 604. a gas collection chamber; 605. a support bar; 606. A second valve; 607. a third valve; 7. an outlet of the boat; 8. cooling the sleeve; 9. a hydrogen outlet; 10. a pneumatic thruster; 11. the entrance of the boat.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings as follows:
as shown in fig. 1-2, a dynamic hydrogen reduction furnace includes a reduction furnace body 1, a furnace tube 5, a hydrogen inlet 4 and a hydrogen outlet 9, the furnace tube 5 penetrates through the reduction furnace body 1, and two ends of the furnace tube are located outside the reduction furnace body 1, the furnace tube 5 is provided with the hydrogen inlet 4 and the hydrogen outlet 9 in a sealing manner, the hydrogen inlet 4 and the hydrogen outlet 9 are respectively located at the left side and the right side of the reduction furnace body 1, and the dynamic hydrogen reduction furnace is characterized in that: an alarm device 2 and a heat preservation device 3 are installed in the reduction furnace body 1, the alarm device 2 is used for prompting workers, and is convenient for the workers to quickly adjust the temperature in the reduction furnace body 1, the heat preservation device 3 is used for preserving heat in the reduction furnace body 1, the left end and the right end of the furnace tube 5 are respectively provided with a boat outlet 7 and a boat inlet 11, a gas collection device 6 is installed on the furnace tube 5, the gas collection device 6 is used for collecting gases such as hydrogen in the furnace tube 5, the gas collection device 6 is positioned between the hydrogen inlet 4 and the boat outlet 7, the right end of the furnace tube 5 is provided with a pneumatic thruster 10, the pneumatic thruster 10 is used for pushing raw materials to be reduced, the heat preservation device 3 comprises a heat preservation layer 301 and a fire-resistant layer 302, the heat preservation layer 301 covers the inner wall of the reduction furnace body 1, the fire-resistant layer 302 covers the heat preservation layer 301, the alarm device 2 comprises a controller 201, a temperature sensor 202, an alarm 203 and a heating wire 204, the temperature sensor 202 is electrically connected with the controller 201, the controller 201 is electrically connected with the alarm 203 and the heating wire 204, the temperature sensor 202 is installed on the fire-resistant layer 302, the controller 201 and the alarm 203 are installed on the outer wall of the reduction furnace body 1, the heating wire 204 is installed on the fire-resistant layer 302, the temperature sensor 202 transmits a temperature signal to the controller 201, the temperature signal is analyzed and processed by the controller 201, the controller 201 is provided with a temperature preset value, when the temperature signal received by the controller 201 is greater than or less than the preset value, the alarm 203 gives an alarm so that a worker can quickly adjust the temperature in the reduction furnace body 1, the abnormal reaction caused by the abnormal temperature in the reduction furnace body 1 is avoided, the working efficiency is effectively improved, the boat outlet 7 is positioned at the leftmost side of the hydrogen inlet 4, and the boat inlet 11 is positioned at the right side of the hydrogen outlet 9, the pneumatic thruster 10 is located on the right side of the boat inlet 11, the gas collection device 6 includes a first valve 601, a vacuum pump 602, a pumping pipe 603, a gas collection chamber 604, a support rod 605, a second valve 606 and a third valve 607, the first valve 601 and the second valve 606 are sequentially installed on the furnace tube 5 from right to left, the upper end of the furnace tube 5 is fixedly connected with the support rod 605, the upper end of the support rod 605 is fixedly connected with the gas collection chamber 604, the gas collection chamber 604 is used for collecting gases such as hydrogen in the furnace tube 5, so as to remove hydrogen in the furnace tube 5, the right end of the gas collection chamber 604 is communicated with the furnace tube 5 through the pumping pipe 603, the pumping pipe 603 is provided with the vacuum pump 602 and the third valve 607, the furnace tube 5 is provided with a cooling sleeve 8, the cooling sleeve 8 is used for cooling the furnace tube 5 located between the first valve 601 and the pumping pipe 603, and the cooling sleeve 8 is located between the first valve 601 and the pumping pipe 603.
The working principle is as follows: when the gas extraction device is used, raw materials to be reduced are placed into the furnace tube 5 from the boat inlet 11, the raw materials are conveyed into the reduction furnace body 1 through the pneumatic thruster 10, the heating wire 204 is opened to heat the interior of the reduction furnace body 1, hydrogen enters the furnace tube 5 from the hydrogen inlet 4, the hydrogen reacts with the raw materials to reduce the raw materials, the temperature sensor 202 can transmit a temperature signal in the reduction furnace body 1 to the controller 201 during the reaction process, after the temperature signal is processed and analyzed by the controller 201, the alarm 203 gives an alarm when the temperature is higher or lower than a preset value set by the controller 201 so as to prompt a worker to quickly adjust the temperature and improve the working efficiency, after the reduction is completed, the hydrogen is not input any more, the first valve 601 is opened, the pneumatic thruster 10 is started to move the reduced raw materials to the left, the raw materials are conveyed between the first valve 601 and the second valve 606, after the temperature is cooled by the cooling sleeve 8, the vacuum pump 602 and the third valve are opened, the hydrogen in the furnace tube 5 can be sucked into the gas collection chamber 604, the hydrogen is removed, the hydrogen extraction chamber 604, the vacuum pump is opened, the oxygen extraction valve 607 is discharged from the furnace tube 5, and the oxygen extraction device can effectively remove oxygen in case of the furnace tube 607, and the furnace tube.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention.
Claims (6)
1. The utility model provides a dynamic hydrogen reduction furnace, includes reduction furnace body (1), boiler tube (5), hydrogen import (4) and hydrogen export (9), boiler tube (5) run through reduction furnace body (1) and both ends are located reduction furnace body (1) outside, sealed installation has hydrogen import (4) and hydrogen export (9) on boiler tube (5), hydrogen import (4) and hydrogen export (9) are located the left and right sides of reduction furnace body (1) respectively, its characterized in that: install alarm device (2) and heat preservation device (3) in reduction furnace body (1), both ends are equipped with boat export (7) and boat entry (11) respectively about boiler tube (5), install gas collection device (6) on boiler tube (5), gas collection device (6) are located between hydrogen import (4) and boat export (7), pneumatic thruster (10) are installed to the right-hand member of boiler tube (5).
2. A dynamic hydrogen reduction furnace according to claim 1, characterized in that: the heat preservation device (3) comprises a heat preservation layer (301) and a fire-resistant layer (302), the heat preservation layer (301) covers the inner wall of the reduction furnace body (1), and the fire-resistant layer (302) covers the heat preservation layer (301).
3. A dynamic hydrogen reduction furnace according to claim 2, characterized in that: alarm device (2) include controller (201), temperature sensor (202), alarm (203) and heater strip (204), temperature sensor (202) electric connection has controller (201), controller (201) electric connection has alarm (203) and heater strip (204), temperature sensor (202) are installed on flame retardant coating (302), controller (201) and alarm (203) are installed on the outer wall of reduction furnace body (1), heater strip (204) are installed on flame retardant coating (302).
4. A dynamic hydrogen reduction furnace according to claim 1, characterized in that: the boat outlet (7) is positioned at the leftmost side of the hydrogen inlet (4), the boat inlet (11) is positioned at the right side of the hydrogen outlet (9), and the pneumatic thruster (10) is positioned at the right side of the boat inlet (11).
5. A dynamic hydrogen reducing furnace according to claim 1, characterized in that: the gas collection device (6) comprises a first valve (601), a vacuum suction pump (602), a suction pipe (603), a gas collection chamber (604), a support rod (605), a second valve (606) and a third valve (607), wherein the first valve (601) and the second valve (606) are sequentially installed on the furnace pipe (5) from right to left, the upper end of the furnace pipe (5) is fixedly connected with the support rod (605), the upper end of the support rod (605) is fixedly connected with the gas collection chamber (604), the right end of the gas collection chamber (604) is communicated with the furnace pipe (5) through the suction pipe (603), and the vacuum suction pump (602) and the third valve (607) are installed on the suction pipe (603).
6. A dynamic hydrogen reduction furnace according to claim 5, characterized in that: and a cooling sleeve (8) is arranged on the furnace tube (5), and the cooling sleeve (8) is positioned between the first valve (601) and the exhaust tube (603).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220375080.9U CN217727141U (en) | 2022-02-23 | 2022-02-23 | Dynamic hydrogen reduction furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220375080.9U CN217727141U (en) | 2022-02-23 | 2022-02-23 | Dynamic hydrogen reduction furnace |
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| Publication Number | Publication Date |
|---|---|
| CN217727141U true CN217727141U (en) | 2022-11-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220375080.9U Active CN217727141U (en) | 2022-02-23 | 2022-02-23 | Dynamic hydrogen reduction furnace |
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|---|---|
| CN (1) | CN217727141U (en) |
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- 2022-02-23 CN CN202220375080.9U patent/CN217727141U/en active Active
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