CN111023795A

CN111023795A - Small-size pit furnace with tail gas recycle device

Info

Publication number: CN111023795A
Application number: CN201911377058.7A
Authority: CN
Inventors: 戚智潍; 王晴
Original assignee: Jiangsu Mcc New Energy Technology Co Ltd
Current assignee: Jiangsu Mcc New Energy Technology Co Ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-04-17

Abstract

The invention discloses a small-sized well type furnace with a tail gas recycling device in the technical field of well type furnaces, wherein a waste gas box is arranged on the right side of the bottom of an inner cavity of a furnace body, an exhaust pipe is arranged on the bottom of the right side of the waste gas box, a first control valve is arranged on the right side of the exhaust pipe, a double-layer pipe is arranged on the right side of the furnace body and comprises an inner pipe and an outer pipe, an air inlet is formed in the bottom of the inner pipe, an air outlet is formed in the top of the inner pipe and is connected with the exhaust pipe, an air outlet pipe is arranged on the bottom of the right side of the outer pipe, a one-way valve is arranged in the air outlet pipe, a vent pipe is arranged on the air outlet pipe and the right side of the top of the furnace body, a heating device, and the control valve is located on the left side of the discharge pipe, and the device has a simple structure and a high recycling rate.

Description

Small-size pit furnace with tail gas recycle device

Technical Field

The invention relates to the technical field of pit furnaces, in particular to a small pit furnace with a tail gas recycling device.

Background

The shaft furnace can produce a large amount of flammable waste gas in the working condition, the flammable waste gas can be recycled, and devices for recycling the tail gas are available in the market at present, but the recycling effect is not ideal, the structure is complex, the cost is high, and therefore, a small-sized shaft furnace with a tail gas recycling device is provided.

Disclosure of Invention

The invention aims to provide a small-sized pit furnace with an exhaust gas recycling device, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a small-sized pit furnace with a tail gas recycling device comprises a furnace body, wherein a waste gas box is arranged at the right side of the bottom of an inner cavity of the furnace body, an exhaust pipe is arranged at the bottom of the right side of the waste gas tank, a first control valve is arranged on the right side of the exhaust pipe, the right side of the furnace body is provided with a double-layer pipe which comprises an inner pipe and an outer pipe, the bottom of the inner pipe is provided with an air inlet, the top of the inner pipe is provided with an air outlet, the air inlet is connected with an exhaust pipe, the bottom of the right side of the outer pipe is provided with an air outlet pipe, a one-way valve is arranged in the air outlet pipe, a vent pipe is arranged on the air outlet pipe and the right side of the top of the furnace body, the right bottom of the breather pipe is provided with a heating device, the top of the breather pipe is provided with a discharge pipe, the inside of the discharge pipe is provided with a quantitative air outlet device, the top of the breather pipe is provided with a second control valve, and the second control valve is positioned on the left side of the discharge pipe.

Preferably, the heating device comprises an air inlet pipe connected with the air pipe, a heater is arranged on the right side of the air inlet pipe, a suction fan is arranged on the right side of the heater, and a third control valve is arranged on the air inlet pipe.

Preferably, ration air outlet means includes a ration section of thick bamboo, ration section of thick bamboo inner wall top is provided with the semicircle board, the bottom of semicircle board be provided with the big semicircular of semicircle board assorted commentaries on classics board, the bottom of ration section of thick bamboo is provided with micro motor through the connecting rod, micro motor's last output is connected with the axis of rotation through the motor shaft, the top at the axis of rotation outer wall is cup jointed at the center of big semicircular commentaries on classics board.

Preferably, the vent pipe is a serpentine coil pipe, and carbon nanotubes are arranged in the vent pipe.

Preferably, an opening is formed in the contact position of the furnace body and the double-layer pipe, and a heat conducting plate is arranged in the opening.

Preferably, the outer wall of the double-layer pipe is provided with a heat preservation layer.

Compared with the prior art, the invention has the beneficial effects that: waste gas is heated through the high temperature in the furnace body behind the entering double-layer tube, be decomposed into hydrogen and nitrogen gas after being heated, decomposition efficiency reaches ninety five percent above, the double-layer tube has prolonged the time that waste gas passes through the pipe fitting, make the heated time greatly increased of waste gas, thereby waste gas decomposition effect has been improved, can make the hydrogen that obtains after being decomposed better adsorbed by carbon nanotube through quantitative gas outlet means, and some gases such as nitrogen gas are discharged, can make to be heated by carbon nanotube through heating device and emit hydrogen, the device simple structure, high recycle rate.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of the quantitative gas outlet device of the present invention.

In the figure: 1 furnace body, 2 waste gas box, 3 exhaust pipes, 4 control valve I, 5 double-layer pipes, 51 inner pipes, 52 outer pipes, 6 air inlets, 7 air outlets, 8 air outlet pipes, 9 one-way valves, 10 air pipes, 11 heating devices, 111 air inlet pipes, 112 heaters, 113 suction fans, 114 control valve III, 12 discharge pipes, 13 quantitative air outlet devices, 131 quantitative cylinders, 132 semicircular plates, 133 large semicircular rotating plates, 134 micro motors, 135 rotating shafts and 14 control valves II.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: the utility model provides a small-size well formula stove with tail gas recycle device, including furnace body 1, the bottom right side of 1 inner chamber of furnace body is provided with exhaust-gas tank 2, the right side bottom of exhaust-gas tank 2 is provided with blast pipe 3, the right side of blast pipe 3 is provided with control valve 4, the right side of furnace body 1 is provided with double-layer tube 5, double-layer tube 5 includes inner tube 51 and outer tube 52, the bottom of inner tube 51 is air inlet 6, the top of inner tube 51 is gas outlet 7, air inlet 6 is connected with blast pipe 3, the right side bottom of outer tube 52 is provided with outlet duct 8, be provided with check valve 9 in the outlet duct 8, outlet duct 8 is provided with breather pipe 10 with the top right side of furnace body 1, the right side bottom of breather pipe 10 is provided with heating device 11, the top of breather pipe 10 is provided with delivery pipe 12, be provided with quantitative air outlet device 13.

The heating device 11 comprises an air inlet pipe 111 connected with the ventilation pipe 10, a heater 112 is arranged on the right side of the air inlet pipe 111, a suction fan 113 is arranged on the right side of the heater 112, a third control valve 114 is arranged on the air inlet pipe 111, and the interior of the ventilation pipe 10 is heated through the heating device 11;

the quantitative gas outlet device 13 comprises a quantitative cylinder 131, a semicircular plate 132 is arranged at the top of the inner wall of the quantitative cylinder 131, a large semicircular rotating plate 133 matched with the semicircular plate 132 is arranged at the bottom of the semicircular plate 132, a micro motor 134 is arranged at the bottom of the quantitative cylinder 131 through a connecting rod, the upper output end of the micro motor 134 is connected with a rotating shaft 135 through a motor shaft, and the center of the large semicircular rotating plate 133 is sleeved at the top of the outer wall of the rotating shaft 135, so that the decomposed hydrogen gas is better adsorbed by the carbon nano tube;

the vent pipe 10 is a serpentine coil pipe, and carbon nanotubes are arranged in the vent pipe 10 to increase the adsorption area;

an opening is arranged at the contact position of the furnace body 1 and the double-layer pipe 5, a heat conducting plate is arranged in the opening, and the heat in the furnace body 1 heats the double-layer pipe 5 through the heat conducting plate;

the outer wall of the double-layer pipe 5 is provided with a heat preservation layer to prevent heat loss.

The working principle is as follows: opening the first control valve 4, closing the second control valve 14 and the third control valve 114, collecting tail gas in the waste gas tank 2, allowing waste gas in the waste gas tank 2 to enter the inner pipe 51 through the exhaust pipe 3, and to enter the outer pipe 52 through the gas outlet of the inner pipe 51, heating the waste gas in the double-layer pipe 5 through the heat conducting plate by the heat in the furnace body 1, so that the waste gas is decomposed into nitrogen and hydrogen, allowing the nitrogen and hydrogen to pass through the vent pipe 10 through the one-way valve 9, adsorbing the hydrogen by the carbon nanotube in the vent pipe 10, and discharging the nitrogen through the discharge pipe 12, when the adsorbed hydrogen in the vent pipe 10 reaches a certain amount, closing the first control valve 4, opening the second control valve 14 and the third control valve 114, and simultaneously keeping the quantitative gas outlet device 13 in a closed state, starting the suction fan 113 and the heater 112 to heat the interior of the vent pipe 10, and releasing the.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a small-size pit furnace with tail gas recycle device, includes furnace body (1), its characterized in that: the bottom right side of furnace body (1) inner chamber is provided with exhaust-gas tank (2), the right side bottom of exhaust-gas tank (2) is provided with blast pipe (3), the right side of blast pipe (3) is provided with control valve (4), the right side of furnace body (1) is provided with double-layer tube (5), double-layer tube (5) include inner tube (51) and outer tube (52), the bottom of inner tube (51) is air inlet (6), the top of inner tube (51) is gas outlet (7), air inlet (6) are connected with blast pipe (3), the right side bottom of outer tube (52) is provided with outlet duct (8), be provided with check valve (9) in outlet duct (8), outlet duct (8) are provided with breather pipe (10) with the top right side of furnace body (1), the right side bottom of breather pipe (10) is provided with heating device (11), the top of breather pipe (10) is provided with delivery pipe (12), be provided with quantitative air outlet means (13) in delivery pipe (12), the top of breather pipe (10) is provided with control valve two (14), and control valve two (14) are located the left side of delivery pipe (12).

2. The small-sized shaft furnace with the tail gas recycling device according to claim 1, wherein: heating device (11) include intake pipe (111) be connected with breather pipe (10), the right side of intake pipe (111) is provided with heater (112), the right side of heater (112) is provided with suction fan (113), be provided with control valve three (114) on intake pipe (111).

3. The small-sized shaft furnace with the tail gas recycling device according to claim 1, wherein: quantitative gas outlet means (13) are including quantitative section of thick bamboo (131), quantitative section of thick bamboo (131) inner wall top is provided with semicircle board (132), the bottom of semicircle board (132) be provided with semicircle board (132) assorted big semicircle commentaries on classics board (133), the bottom of quantitative section of thick bamboo (131) is provided with micro motor (134) through the connecting rod, the last output of micro motor (134) is connected with axis of rotation (135) through the motor shaft, the top at axis of rotation (135) outer wall is cup jointed at the center of big semicircle commentaries on classics board (133).

4. The small-sized shaft furnace with the tail gas recycling device according to claim 1, wherein: the ventilating pipe (10) is a snake-shaped coil pipe, and carbon nano tubes are arranged in the ventilating pipe (10).

5. The small-sized shaft furnace with the tail gas recycling device according to claim 1, wherein: an opening is formed in the contact position of the furnace body (1) and the double-layer pipe (5), and a heat conducting plate is arranged in the opening.

6. The small-sized shaft furnace with the tail gas recycling device according to claim 1, wherein: and the outer wall of the double-layer pipe (5) is provided with a heat-insulating layer.