CN210831979U - Tubular heating furnace for heating combustible gas - Google Patents
Tubular heating furnace for heating combustible gas Download PDFInfo
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- CN210831979U CN210831979U CN201921929650.9U CN201921929650U CN210831979U CN 210831979 U CN210831979 U CN 210831979U CN 201921929650 U CN201921929650 U CN 201921929650U CN 210831979 U CN210831979 U CN 210831979U
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Abstract
The utility model relates to a tubular heating furnace for heating combustible gas specifically is applied to organic matter thermal cracking such as waste plastics, rubber waste, waste oil, oil shale, straw and domestic waste to prepare fuel oil, carbon black and combustible gas. Comprises a heating furnace body; the furnace is characterized in that a fire-resistant insulating layer is arranged between a furnace shell and a hearth of a furnace body of the heating furnace, the side wall of the furnace shell is connected with a burner, and an observation hole is formed in the furnace shell; the waste gas generated by the burner is discharged from the top of the furnace; temperature detection couples are respectively arranged at the upper part, the middle part and the lower part in the hearth; the upper part of the furnace body is provided with a pyrolysis circulating gas inlet, and the inlet is provided with a pyrolysis circulating gas inlet regulating valve and a flowmeter; the lower part of the furnace body is provided with a pyrolysis circulating gas outlet; the upper part of the furnace body is also provided with a flue gas outlet.
Description
Technical Field
The invention relates to a tubular combustion heating furnace device for heating combustible gas, which is particularly applied to the thermal cracking of organic matters such as waste plastics, waste rubber, waste oil, oil shale, straws, household garbage and the like to prepare fuel oil, carbon black and combustible gas.
Background
The existing thermal cracking method of organic matters such as waste plastics, waste rubber and the like is mainly an external heating type, and has the defects of high investment, high energy consumption, low product yield and low efficiency. The internal heating thermal cracking mode has high energy consumption, low heat value of recovered gas and poor product quality due to the mixing of steam, nitrogen and CO2, and is rarely put into industrial production.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the tubular heating furnace for heating the combustible gas, which is used for internally heating organic waste materials such as waste rubber, waste plastic and the like, has the advantages of low investment, low energy consumption, high production efficiency, good product quality, capability of removing S, N, safety and environmental protection.
In order to achieve the purpose, the invention adopts the following technical scheme that the device comprises a heating furnace body; the furnace is characterized in that a fire-resistant insulating layer is arranged between a furnace shell and a hearth of a furnace body of the heating furnace, the side wall of the furnace shell is connected with a burner, and an observation hole is formed in the furnace shell; the waste gas generated by the burner is discharged from the top of the furnace; temperature detection couples are respectively arranged at the upper part, the middle part and the lower part in the hearth; the upper part of the furnace body is provided with a pyrolysis circulating gas inlet, and the inlet is provided with a pyrolysis circulating gas inlet regulating valve and a flowmeter; the lower part of the furnace body is provided with a pyrolysis circulating gas outlet; the upper part of the furnace body is also provided with a flue gas outlet.
Further, the pyrolysis recycle gas may be hydrogen H2、Nitrogen gas N2Methane CH4Ethylene C2H4Ethane C2H6Carbon monoxide CO and carbon dioxide CO2One or more of the mixed gases.
Further, the fuel of the burner is a combustible gas or a combustible liquid.
Further, a combustor inlet adjusting valve is arranged on the combustor. The fuel quantity of the combustion can be automatically adjusted according to the change of the flow of the heated gas and the temperature of the outlet, and further the temperature of the hearth can be adjusted.
Further, the furnace top is provided with a discharge valve.
Furthermore, pyrolysis circulating gas enters from a combustible gas inlet of the furnace body, is discharged from a pyrolysis circulating gas outlet, and performs countercurrent heat exchange with combustion flue gas.
Furthermore, a metal or ceramic heat exchange tube is arranged between an inlet and an outlet of the heated gas in the furnace.
Compared with the prior art, the invention has the beneficial effects.
The utility model discloses there is heat-resisting heat preservation inside lining in the stove outer covering, controls furnace temperature at 600 ~ 1000 ℃ through combustor combustion gas volume to control adjustment exhanst gas outlet temperature through the exhanst gas volume is at 200 ~ 500 ℃.
Drawings
The invention is further described with reference to the following figures and detailed description. The scope of the invention is not limited to the following expressions.
FIG. 1 is a schematic diagram of the present invention.
In the figure, 1 is a hearth, 2 is a furnace shell, 3 is a fireproof insulating layer, 4 is a combustor, 5 is a combustor inlet adjusting valve, 6 is an observation hole, 7 is a flue gas outlet, 8 is a discharge valve, 9 is a pyrolysis circulating gas inlet adjusting valve, 10 is a pyrolysis circulating gas outlet, 11 is a galvanic couple, and 14 is a flow meter.
Detailed Description
As shown in FIG. 1, the present invention includes a heating furnace body; the furnace is characterized in that a fireproof heat-insulating layer 3 is arranged between a furnace shell 2 and a hearth 1 of a furnace body of the heating furnace, the side wall of the furnace shell 2 is connected with a burner 4, and an observation hole 6 is arranged on the furnace shell 2; the waste gas generated by the burner 4 is discharged from the top of the furnace; the upper part, the middle part and the lower part in the hearth 1 are respectively provided with a temperature detection couple 11; the upper part of the furnace body is provided with a pyrolysis circulating gas inlet, and the inlet is provided with a pyrolysis circulating gas inlet regulating valve 9 and a flowmeter 14; the lower part of the furnace body is provided with a pyrolysis circulating gas outlet 10; the upper part of the furnace body is also provided with a flue gas outlet 7.
Further, the pyrolysis recycle gas may be hydrogen H2、Nitrogen gas N2Methane CH4Ethylene C2H4Ethane C2H6Carbon monoxide CO and carbon dioxide CO2One or more of the mixed gases.
Further, the fuel of the burner 4 is a combustible gas or a combustible liquid.
Further, a burner inlet adjusting valve 5 is arranged on the burner. The fuel quantity of the combustion can be automatically adjusted according to the change of the flow of the heated gas and the temperature of the outlet, and further the temperature of the hearth can be adjusted.
Further, the furnace roof is provided with a discharge valve 8.
Furthermore, pyrolysis circulating gas enters from a combustible gas inlet of the furnace body, is discharged from a pyrolysis circulating gas outlet, and performs countercurrent heat exchange with combustion flue gas.
Furthermore, a metal or ceramic heat exchange tube is arranged between an inlet and an outlet of the heated gas in the furnace.
Specifically, as a specific example. Hydrogen H2、Nitrogen gas N2Methane CH4Ethylene C2H4Ethane C2H6Carbon monoxide CO and carbon dioxide CO2、And the like of a single or mixed combustible gas. The heating furnace body consists of a shell and a lining, and a flange is arranged on the outer wall of the lower part of the shell. The flange is connected with the burner and is provided with a viewing aperture 6. The fuel of the burner can be combustible gas and combustible liquid, and the generated waste gas is discharged from the top of the furnace; the furnace is internally provided with a metal or ceramic heat exchange tube connected with an inlet and an outlet of heated gas, the lower part, the middle part and the upper part of the furnace body are provided with temperature detection couples, a combustor is provided with a gas flow automatic regulating electromagnetic valve, and the temperature of a hearth and the quantity of fuel are automatically regulated according to the change of the flow and the outlet temperature of the heated gas.
The heated gas is N2、H2、CH4、C2H4、C2H6、CO、CO2And the like, can be used for thermally cracking organic matters such as waste plastics, waste rubber, waste oil, oil shale, straws, garbage and the like.
The heating temperature of the combustible gas is 350-700 ℃.
Combustible gas enters from the upper part of the heating furnace and is discharged from the lower part of the heating furnace, and the combustible gas and the combustion flue gas perform countercurrent heat exchange. The temperature of the hearth and the temperature of the flue gas discharged from the top of the furnace are automatically adjusted according to a set range, and the waste heat is recycled.
The combustible gas heating furnace is divided into a lower hearth radiation heat exchange section, a middle convection heat exchange section and an upper flue gas section, a heat-resistant heat-preservation lining is arranged in a furnace shell, the temperature of the hearth is controlled to be 600-1000 ℃ through the combustion gas quantity of a burner, and the temperature of a flue gas outlet is adjusted to be 200-500 ℃ through the control of the flue gas quantity. Circulating pyrolysis gas H2、CH4、C2H4、CO、CO2、H2O、N2And the mixed gas enters from an inlet at the upper part of a heating pipe in the furnace at the flow speed of 6-30 m/s and flows out from an outlet at the lower part, and the mixed gas flows in the reverse direction with the high-temperature flue gas to be heated to the temperature of 350-700 ℃ required by pyrolysis. The heating furnace automatically detects and adjusts the combustion temperature, the flue gas temperature, the outlet temperature and the flow of the heated gas, and ensures that the temperature of the heated gas and the flue gas meet the set requirements.
As shown in figure 1, combustible gas is mixed and combusted with air sucked by a burner blower through an inlet adjusting valve of a burner and then is sprayed into a hearth, and a furnace body consists of a furnace shell and a fireproof heat-insulating layer; the method comprises the following steps: lower radiant heat transfer zone, II: middle convective heat transfer zone, III: the upper flue gas discharge area is provided with a corresponding temperature detection couple, the middle part is provided with a pyrolysis circulating gas inlet regulating valve and a flowmeter, the lower radiation heat transfer area is provided with an observation hole 6, a pyrolysis circulating gas outlet and a flue gas outlet, and the pyrolysis circulating gas is used for supplying heat or discharged through a discharge valve 8.
It should be understood that the detailed description of the present invention is only for illustrating the present invention and is not limited by the technical solutions described in the embodiments of the present invention, and those skilled in the art should understand that the present invention can be modified or substituted equally to achieve the same technical effects; as long as the use requirements are met, the method is within the protection scope of the invention.
Claims (7)
1. A tubular heating furnace for heating combustible gas comprises a heating furnace body; the furnace is characterized in that a fire-resistant insulating layer is arranged between a furnace shell and a hearth of a furnace body of the heating furnace, the side wall of the furnace shell is connected with a burner, and an observation hole is formed in the furnace shell; the waste gas generated by the burner is discharged from the top of the furnace; temperature detection couples are respectively arranged at the upper part, the middle part and the lower part in the hearth;
the upper part of the furnace body is provided with a pyrolysis circulating gas inlet, and the inlet is provided with a pyrolysis circulating gas inlet regulating valve and a flowmeter; the lower part of the furnace body is provided with a pyrolysis circulating gas outlet;
the upper part of the furnace body is also provided with a flue gas outlet.
2. The tube furnace according to claim 1, wherein: the pyrolysis recycle gas may be hydrogen H2、Nitrogen gas N2Methane CH4Ethylene C2H4Ethane C2H6Carbon monoxide CO and carbon dioxide CO2One or more of the mixed gases.
3. The tube furnace according to claim 1, wherein: the fuel of the combustor is combustible gas or combustible liquid.
4. The tube furnace according to claim 1, wherein: and the combustor is provided with a combustor inlet adjusting valve.
5. The tube furnace according to claim 1, wherein: the furnace top is provided with a discharge valve.
6. The tube furnace according to claim 1, wherein: pyrolysis circulating gas enters from a combustible gas inlet of the furnace body, is discharged from a pyrolysis circulating gas outlet, and performs countercurrent heat exchange with combustion flue gas.
7. The tube furnace according to claim 1, wherein: a metal or ceramic heat exchange tube is arranged between the inlet and the outlet of the heated gas in the furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921929650.9U CN210831979U (en) | 2019-11-11 | 2019-11-11 | Tubular heating furnace for heating combustible gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921929650.9U CN210831979U (en) | 2019-11-11 | 2019-11-11 | Tubular heating furnace for heating combustible gas |
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| Publication Number | Publication Date |
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| CN210831979U true CN210831979U (en) | 2020-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921929650.9U Active CN210831979U (en) | 2019-11-11 | 2019-11-11 | Tubular heating furnace for heating combustible gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114453398A (en) * | 2021-12-10 | 2022-05-10 | 南京万德斯环保科技股份有限公司 | System for utilize direct organic waste pyrolysis carbomorphism of circulation flue gas |
-
2019
- 2019-11-11 CN CN201921929650.9U patent/CN210831979U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114453398A (en) * | 2021-12-10 | 2022-05-10 | 南京万德斯环保科技股份有限公司 | System for utilize direct organic waste pyrolysis carbomorphism of circulation flue gas |
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