CN212457409U - Novel gas hot-blast stove - Google Patents

Novel gas hot-blast stove Download PDF

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Publication number
CN212457409U
CN212457409U CN202021135161.9U CN202021135161U CN212457409U CN 212457409 U CN212457409 U CN 212457409U CN 202021135161 U CN202021135161 U CN 202021135161U CN 212457409 U CN212457409 U CN 212457409U
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communicated
hot blast
heat exchanger
water outlet
temperature
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CN202021135161.9U
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Chinese (zh)
Inventor
王飞飞
牛继波
杨永强
马庆国
吴玺
梅庆义
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Linyi Ouke Energy Saving Technology Co ltd
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Linyi Ouke Energy Saving Technology Co ltd
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Abstract

The utility model discloses a novel gas hot blast stove, which comprises a hot blast stove shell and a controller; the controller is fixed on the hot blast furnace shell; it is characterized in that a burner, a furnace body and a heat exchanger are fixed in the shell of the hot blast furnace; the heat exchanger is arranged close to one side wall of the hot blast stove shell; an air heater is fixed on the hot air furnace shell; the hot air blower is arranged on one side wall of the hot air furnace shell which is tightly attached to the heat exchanger and is opposite to the heat exchanger; the combustor is fixed on the upper end or the upper section of the side wall of the furnace body. The utility model has the advantages that: the temperature of the discharged flue gas is close to the temperature of low-temperature circulating water in the water return pipe, and the heat transfer efficiency is high; the amount of nitrogen oxides in the flue gas is extremely low and far lower than the environmental protection requirement, and the flue gas can be directly discharged without additionally arranging a tail gas treatment device; the utility model discloses wholly be fixed in the hot-blast furnace casing, compact structure, it is small, occupation space is little, has extremely strong practicality.

Description

Novel gas hot-blast stove
Technical Field
The utility model relates to a gas hot-blast furnace field especially relates to a novel gas hot-blast furnace.
Background
Through long-term production practices, it has been recognized that the heat utilization and the thermal working effect can be improved more only by using hot air as a medium and a carrier. In the traditional electric heat source and steam heat power, a plurality of circulating fans are often arranged in the conveying process, so that hot air is formed indirectly to be dried or heated. The process has the defects of large energy waste, excessive accessory equipment, complex process and the like. Gas hot blast stoves have been developed to address the above problems.
Traditional gas hot-blast furnace adopts diffusion formula burning, and combustion temperature is high, leads to flue gas nitrogen oxide content high, and the direct emission of flue gas is not conform to the environmental protection requirement, need add tail gas processing apparatus, increases use cost. Therefore, the applicant develops a novel gas hot blast stove, and a full-premixing low-temperature combustion technology is adopted, so that the amount of nitrogen oxides in flue gas is extremely low and is far lower than the environmental protection requirement.
Disclosure of Invention
In order to solve the problems in the background art, the utility model discloses a novel gas hot blast stove, which comprises a hot blast stove shell and a controller; the controller is fixed on the hot blast furnace shell; it is characterized in that a burner, a furnace body and a heat exchanger are fixed in the shell of the hot blast furnace; the heat exchanger is arranged close to one side wall of the hot blast stove shell; an air heater is fixed on the hot air furnace shell; the hot air blower is arranged on one side wall of the hot air furnace shell which is tightly attached to the heat exchanger and is opposite to the heat exchanger; the burner is fixed at the upper end or the upper section of the side wall of the furnace body; the combustor is communicated with a first air inlet pipeline; a premixing fan is arranged on the first air inlet pipeline; the first air inlet pipeline is communicated with a second air inlet pipeline; the communication position of the second air inlet pipeline and the first air inlet pipeline is positioned at the front end of an air inlet of the premixing fan; a first electric control valve is arranged on the second air inlet pipeline; the furnace body is provided with a low-temperature water inlet, a high-temperature water outlet, a combustion chamber, a flue gas outlet and a heat exchange coil; one end of the heat exchange coil is communicated with the low-temperature water inlet, and the other end of the heat exchange coil is communicated with the high-temperature water outlet; the low-temperature water inlet is communicated with a water return pipe, and the other end of the water return pipe is communicated with a water outlet of the heat exchanger; the high-temperature water outlet is communicated with a water outlet pipe, and the other end of the water outlet pipe is communicated with a water inlet of the heat exchanger; the combustion chamber is communicated with the smoke outlet; the smoke outlet is communicated with the smoke exhaust pipe; a circulating water pump is arranged on the water return pipe; the combustor, the air heater, the premixing fan, the first electric control valve and the circulating water pump are electrically connected with the controller.
The low-temperature water inlet is arranged at the lower section of the furnace body; the high-temperature water outlet is arranged at the upper section of the furnace body.
The heat exchanger is a copper pipe heat exchanger.
A plurality of combustion chambers are arranged in the furnace body; the heat exchange coil is arranged on the side wall of the combustion chamber.
The side wall of the combustion chamber is provided with a plurality of conical bulges.
A pressure and temperature sensor is arranged on the water outlet pipe; the pressure and temperature sensor is used for detecting the water pressure and the water temperature in the water outlet pipe; the pressure and temperature sensor is electrically connected with the controller.
The lower end of the furnace body is provided with a water outlet; the water outlet is communicated with the combustion chamber; the lower end of the water outlet is communicated with a water outlet pipe.
The utility model has the advantages that: the temperature of the discharged flue gas is close to the temperature of low-temperature circulating water in the water return pipe, and the heat transfer efficiency is high; the amount of nitrogen oxides in the flue gas is extremely low and far lower than the environmental protection requirement, and the flue gas can be directly discharged without additionally arranging a tail gas treatment device; the utility model is integrally fixed in the shell of the hot blast stove, has compact structure, small volume, small occupied space and strong practicability; the circulating water and the hot flue gas form full countercurrent, so that the heat exchange efficiency is improved; the heat exchange efficiency can be further improved by adopting a plurality of combustion chambers; the heat exchange coil is directly arranged on the side wall of the combustion chamber, so that the whole furnace body can be formed in a casting mode, and the production cost of the furnace body is reduced; the conical protrusions can increase the heat exchange area, and further improve the heat exchange efficiency; the pressure and temperature sensor can effectively prevent the fault caused by the overhigh pressure or overhigh temperature of the circulating water.
Drawings
Fig. 1 is an overall schematic view of the present invention.
Fig. 2 is a perspective view of the furnace body of the present invention.
Fig. 3 is a front view of fig. 2.
Fig. 4 is a sectional view taken along a-a in fig. 3.
Fig. 5 is a sectional view taken along the direction B-B in fig. 3.
Fig. 6 is a sectional view taken along the direction C-C in fig. 4.
Fig. 7 is a sectional view taken along the direction D-D in fig. 4.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the invention can be more easily understood by those skilled in the art, thereby making the scope of the invention more clearly defined.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
Referring to fig. 1-7, a novel gas hot-blast stove comprises a hot-blast stove housing 1 and a controller; the controller is fixed on the hot blast stove shell 1; a burner 2, a furnace body 3 and a heat exchanger 4 are fixed in the hot blast furnace shell 1; the heat exchanger 4 is arranged close to one side wall of the hot air furnace shell 1; a hot air blower 5 is fixed on the hot air furnace shell 1; the hot air blower 5 is arranged on one side wall of the hot air furnace shell 1 which is tightly attached to the heat exchanger 4 and is opposite to the heat exchanger 4; the burner 2 is fixed at the upper end or the upper section of the side wall of the furnace body 3; the combustor 2 is communicated with a first air inlet pipeline K1; a premixing fan 6 is arranged on the first air inlet pipeline K1; the first air inlet pipeline K1 is communicated with a second air inlet pipeline K2; the communication position of the second air inlet pipeline K2 and the first air inlet pipeline K1 is positioned at the front end of the air inlet of the premixing fan 6; a first electric control valve Z1 is arranged on the second air inlet pipeline K2; the furnace body 3 is provided with a low-temperature water inlet 301, a high-temperature water outlet 302, a combustion chamber 303, a flue gas outlet 304 and a heat exchange coil 305; one end of the heat exchange coil 305 is communicated with the low-temperature water inlet 301, and the other end is communicated with the high-temperature water outlet 302; the low-temperature water inlet 301 is communicated with a water return pipe K3, and the other end of the water return pipe K3 is communicated with a water outlet of the heat exchanger 4; the high-temperature water outlet 302 is communicated with a water outlet pipe K4, and the other end of the water outlet pipe K4 is communicated with a water inlet of the heat exchanger 4; the combustion chamber 303 is communicated with a flue gas outlet 304; the smoke outlet 304 is communicated with a smoke exhaust pipe K6; a circulating water pump 7 is arranged on the water return pipe K3; the combustor 2, the hot air blower 5, the premixing fan 6, the first electric control valve Z1 and the circulating water pump 7 are electrically connected with the controller.
The working principle and the using method are as follows: when the utility model is used, the controller starts the air heater 5, the pre-mixing fan 6 and the circulating water pump 7 firstly, and then opens the first electric control valve Z1 and starts the ignition device of the burner 2; therefore, the premixing fan 6 sucks air through the first air inlet pipeline K1, fuel gas enters the first air inlet pipeline K1 through the second air inlet pipeline K2 to be premixed with the air, and enters the combustor 2 after being premixed again by the premixing fan 6 to be ignited by the ignition device, the fuel gas is combusted in the combustion chamber 303, and smoke is discharged through the smoke outlet 304-the smoke exhaust pipe K6; the circulating water pump 7 enables circulating water to continuously circulate in the water return pipe K3, the heat exchange coil 305, the water outlet pipe K4 and the heat exchanger 4 in sequence; the low-temperature circulating water absorbs heat generated by gas combustion through the heat exchange coil 305 and is heated to become high-temperature circulating water, the high-temperature circulating water enters the heat exchanger 4 through the water outlet pipe K4, the inlet air of the air heater 5 exchanges heat with the high-temperature circulating water in the heat exchanger 4 through the surface of the heat exchanger 4, the inlet air of the air heater 5 is heated to form hot air, and the hot air is blown out through the air heater 5 to raise the indoor temperature, so that the heating purpose is achieved; the temperature of the circulating water in the heat exchanger 4 is reduced to be low-temperature circulating water, the low-temperature circulating water enters the heat exchange coil 305 through the water return pipe K3 to be heated and circulated continuously, and the hot air blower 5 blows out hot air continuously to raise the indoor temperature.
The temperature of the flue gas discharged by the utility model is close to the temperature of the low-temperature circulating water in the water return pipe K3, the heat transfer efficiency is high, the gas consumption can be saved by more than 60% compared with the traditional gas hot blast stove, and the high market promotion value is achieved; because a full-premix combustion technology is adopted, and heat generated by combustion of gas in the combustion chamber 303 is taken away in time through the heat exchange coil 305, the gas is always combusted at low temperature, so that the amount of nitrogen oxides in the flue gas is extremely low and far lower than the environmental protection requirement, and the flue gas can be directly discharged without additionally arranging a tail gas treatment device; the utility model discloses wholly be fixed in hot-blast furnace casing 1, compact structure, it is small, occupation space is little, has extremely strong practicality, is particularly suitable for places such as the factory building that do not have the heating installation.
The low-temperature water inlet 301 is arranged at the lower section of the furnace body 3; the high-temperature water outlet 302 is provided at the upper stage of the furnace body 3.
Therefore, the low-temperature circulating water moves from bottom to top in the heat exchange coil 305, the hot flue gas in the combustion chamber 303 moves from top to bottom, and the circulating water and the hot flue gas form full countercurrent, so that the heat exchange efficiency is improved.
The heat exchanger 4 is a copper tube heat exchanger.
A plurality of combustion chambers 303 are arranged in the furnace body 3; heat exchanging coil 305 opens into the side wall of combustion chamber 303.
The heat exchange efficiency can be further improved by adopting a plurality of combustion chambers 303; the heat exchange coil 305 is directly arranged on the side wall of the combustion chamber 303, so that the whole furnace body 3 can be formed in a casting mode, and the production cost of the furnace body 3 is reduced.
The side wall of the combustion chamber 303 is provided with a plurality of conical protrusions 306.
The conical protrusions 306 can increase the heat exchange area, and further improve the heat exchange efficiency.
A pressure and temperature sensor 8 is arranged on the water outlet pipe K4; the pressure and temperature sensor 8 is used for detecting the water pressure and the water temperature in the water pipe K4; the pressure and temperature sensor 8 is electrically connected with the controller.
When the pressure and temperature sensor 8 detects that the water pressure or the water temperature in the water outlet pipe K4 is higher than a set value, the controller controls the first electric control valve Z1 to stop the supply of fuel gas and send out an alarm to prevent faults caused by overhigh pressure or overhigh temperature of circulating water.
The lower end of the furnace body 3 is provided with a water outlet 307; the water outlet 307 is communicated with the combustion chamber 303; the lower end of the water outlet 307 is communicated with a water outlet pipe K5.
After the hot flue gas in the combustion chamber 303 is precooled, the water vapor in the flue gas is condensed into liquid water, and the condensed liquid water can flow out through the water discharge pipe K5.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any slight modifications, equivalent replacements and improvements made by the technical spirit of the present invention to the above embodiments should be included in the technical solution of the present invention.

Claims (7)

1. A novel gas hot blast stove comprises a hot blast stove shell and a controller; the controller is fixed on the hot blast furnace shell; it is characterized in that a burner, a furnace body and a heat exchanger are fixed in the shell of the hot blast furnace; the heat exchanger is arranged close to one side wall of the hot blast stove shell; an air heater is fixed on the hot air furnace shell; the hot air blower is arranged on one side wall of the hot air furnace shell which is tightly attached to the heat exchanger and is opposite to the heat exchanger;
the burner is fixed at the upper end or the upper section of the side wall of the furnace body; the combustor is communicated with a first air inlet pipeline; a premixing fan is arranged on the first air inlet pipeline; the first air inlet pipeline is communicated with a second air inlet pipeline; the communication position of the second air inlet pipeline and the first air inlet pipeline is positioned at the front end of an air inlet of the premixing fan; a first electric control valve is arranged on the second air inlet pipeline;
the furnace body is provided with a low-temperature water inlet, a high-temperature water outlet, a combustion chamber, a flue gas outlet and a heat exchange coil; one end of the heat exchange coil is communicated with the low-temperature water inlet, and the other end of the heat exchange coil is communicated with the high-temperature water outlet; the low-temperature water inlet is communicated with a water return pipe, and the other end of the water return pipe is communicated with a water outlet of the heat exchanger; the high-temperature water outlet is communicated with a water outlet pipe, and the other end of the water outlet pipe is communicated with a water inlet of the heat exchanger; the combustion chamber is communicated with the smoke outlet; the smoke outlet is communicated with the smoke exhaust pipe; a circulating water pump is arranged on the water return pipe;
the combustor, the air heater, the premixing fan, the first electric control valve and the circulating water pump are electrically connected with the controller.
2. The novel gas hot blast stove according to claim 1, wherein the low temperature water inlet is provided at a lower section of the stove body; the high-temperature water outlet is arranged at the upper section of the furnace body.
3. The novel gas hot blast stove according to claim 1, wherein the heat exchanger is a copper tube heat exchanger.
4. The novel gas hot blast stove according to claim 1, characterized in that a plurality of said combustion chambers are provided in said stove body; the heat exchange coil is arranged on the side wall of the combustion chamber.
5. The novel gas hot blast stove according to claim 4, characterized in that the side wall of the combustion chamber is provided with a plurality of conical protrusions.
6. The novel gas hot blast stove according to claim 5, characterized in that a pressure and temperature sensor is arranged on the water outlet pipe; the pressure and temperature sensor is used for detecting the water pressure and the water temperature in the water outlet pipe; the pressure and temperature sensor is electrically connected with the controller.
7. The novel gas hot blast stove according to claim 1, characterized in that the lower end of the stove body is provided with a water outlet; the water outlet is communicated with the combustion chamber; the lower end of the water outlet is communicated with a water outlet pipe.
CN202021135161.9U 2020-06-18 2020-06-18 Novel gas hot-blast stove Active CN212457409U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202021135161.9U CN212457409U (en) 2020-06-18 2020-06-18 Novel gas hot-blast stove

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202021135161.9U CN212457409U (en) 2020-06-18 2020-06-18 Novel gas hot-blast stove

Publications (1)

Publication Number Publication Date
CN212457409U true CN212457409U (en) 2021-02-02

Family

ID=74471085

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202021135161.9U Active CN212457409U (en) 2020-06-18 2020-06-18 Novel gas hot-blast stove

Country Status (1)

Country Link
CN (1) CN212457409U (en)

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