Heat carrier heating furnace for burning biomass to produce gas
Technical Field
The utility model relates to an industrial boiler technical field, more specifically say, the utility model relates to a fire heat carrier heating furnace that living beings system gas.
Background
At present, with the continuous promotion of national targets of carbon neutralization and carbon peak reaching, biomass fuel is vigorously developed; however, due to the diversity and instability of biomass fuel sources, the output and pollutant discharge of a direct-fired biomass fuel heating furnace cannot be guaranteed to be stable, and the heating furnace using biomass gas as fuel is applied.
The biomass gas-making components are relatively stable, continuous in supply and convenient to adjust, but have the characteristics of low heat value, high water content and high tar content compared with natural gas, liquefied petroleum gas, coke oven gas and the like. Meanwhile, the quality of the gas sources generated by various gas making factories is greatly different, and the heat carrier heating furnace for making gas by burning biomass needs to be designed in a targeted manner.
SUMMERY OF THE UTILITY MODEL
In order to overcome the above-mentioned defect of prior art, the embodiment of the utility model provides a fire heat carrier heating furnace that living beings system gas, the utility model aims to solve the technical problem that: how to better utilize biomass gas making and improve the utilization efficiency of the biomass gas making.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a fire heat carrier heating furnace of living beings gas making, includes furnace body and combustion chamber, the combustion chamber sets up in the furnace body below, one side of combustion chamber is provided with the combustor, the inside one side bottom of keeping away from the combustor of furnace body installs the radiation section coil pipe, the upper end of radiation section coil pipe is connected with the ceiling pipe, one side that the inside of furnace body is located radiation section coil pipe and ceiling pipe is provided with the convection section, the outer end of furnace body is provided with the import header, the one end of import header sets up in furnace body internal connection and has the convection section header, the upper end of furnace body is provided with export header and outlet flue.
In a preferred embodiment, the lateral wall of combustion chamber has seted up the combustor interface, the combustor is installed at the combustor interface, the combustor is the low nitrogen gas burner of high temperature type, just be provided with multistage gas emergency cut-off device and bleeder mechanism on the combustor, the combustor can ignite the inside living beings gas making of combustion chamber, sets up multistage gas emergency cut-off device and bleeder mechanism and can effectively improve the security of biological stove.
In a preferred embodiment, the combustion chamber adopts negative pressure combustion, the biomass gasification device directly sends the gas to the combustion chamber for combustion without intermediate storage tank and pressurization, the biomass gas is directly used for combustion of the biological furnace, other processes are not needed in the process, the process is simple, and the cost is low.
In a preferred embodiment, the periphery and the lower part of the combustion chamber are heat insulation furnace walls, the upper part of the combustion chamber is provided with a furnace arch and a throat, the heat insulation combustion chamber is adopted, the temperature of the combustion chamber is always kept between 1000 and 1100 ℃ for various gases with low heat value, high water content and high tar content, the burnout rate is high, and the generation amount of nitrogen oxides is small.
In a preferred embodiment, the convection section comprises a first convection section, a second convection section, a third convection section and a fourth convection section, one end of the first convection section is connected with one end of the radiation section coil pipe, one end of the fourth convection section is connected with a convection section header pipe, and the multiple convection sections can better realize the exchange of heat carriers and heat inside the biological furnace.
In a preferred embodiment, the first convection section, the second convection section, the third convection section and the fourth convection section adopt a multi-stage parallel or series structure, the inter-segment distance of each stage of convection section is gradually reduced along with the flow direction of flue gas, and the convection sections can be selectively set into a series or parallel structure according to the actual inside of the furnace body.
In a preferred embodiment, the end of the ceiling tube remote from the radiant section coil is connected to an outlet header, through which the heat carrier can pass into the outlet header and then be discharged through the outlet header for heat rejection by the thermal plant.
Compared with the prior art, the utility model discloses a technological effect and advantage:
1. the utility model discloses adapt to all kinds of living beings gas making fuel, guarantee stable burning. The adiabatic combustion chamber is adopted, the temperature of the combustion chamber is always kept between 1000 and 1100 ℃ for various gases with low heat value, high water content and high tar content, the burnout rate is high, and the generation amount of nitrogen oxides is small;
2. the utility model is safe and reliable, the burner is provided with a multi-stage gas emergency cut-off and discharge device, the combustion chamber is a six-sided heavy furnace wall and is provided with an explosion door, the gas combustion of the heating furnace is safe and reliable, and the accident loss is small;
3. the utility model discloses the thermal efficiency is high, and living beings gas making calorific value is low, and the radiation heat transfer is few, the convection heat transfer is many, adopts radiation section + multistage convection current section structure, guarantees that the temperature of cigarette goes out is less than or equal to heat carrier import temperature +20 ℃.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
The reference signs are: 1. a furnace body; 2. a combustion chamber; 3. a burner; 4. a radiant section coil; 5. a ceiling pipe; 6. an inlet header; 7. a convection section header; 8. an outlet header; 9. a first convection section; 10. a second convection section; 11. a third convection section; 12. and a fourth convection section.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
According to the heat carrier heating furnace that a fire living beings system gas that figure 1 shows, including furnace body 1 and combustion chamber 2, combustion chamber 2 sets up in furnace body 1 below, one side of combustion chamber 2 is provided with combustor 3, radiation section coil pipe 4 is installed to the inside one side bottom of keeping away from combustor 3 of furnace body 1, the upper end of radiation section coil pipe 4 is connected with ceiling pipe 5, one side that the inside of furnace body 1 is located radiation section coil pipe 4 and ceiling pipe 5 is provided with the convection current section, the outer end of furnace body 1 is provided with import header 6, the one end of import header 6 sets up in furnace body 1 internal connection has convection current section header 7, the upper end of furnace body 1 is provided with export header 8 and outlet flue 13.
In a preferred embodiment, a combustor interface is arranged on the side wall of the combustion chamber 2, the combustor 3 is installed at the combustor interface, the combustor 3 is a high-temperature low-nitrogen gas combustor, a multi-stage gas emergency cut-off device and a discharge device are arranged on the combustor 3, the combustor 3 can ignite biomass gas in the combustion chamber 2 to make gas, and the safety of the biological furnace can be effectively improved by the multi-stage gas emergency cut-off device and the discharge device.
In a preferred embodiment, the combustion chamber 2 adopts negative pressure combustion, the biomass gasification device directly sends the gas to the combustion chamber 2 for combustion without intermediate storage tank and pressurization, the biomass gas is directly used for combustion of the biological furnace, other processes are not needed in the middle, the process is simple, and the cost is low.
In a preferred embodiment, the periphery and the lower part of the combustion chamber 3 are all heat insulation furnace walls, the upper part of the combustion chamber 3 is provided with a furnace arch and a throat, and an explosion door, a fire observation hole, a manhole, an inspection hole and the like are further arranged at the combustion chamber 2 in actual use, so that the safety performance of the equipment is improved.
In a preferred embodiment, the convection section comprises a first convection section 9, a second convection section 10, a third convection section 11 and a fourth convection section 12, one end of the first convection section 9 is connected with one end of the radiant section coil 4, one end of the fourth convection section 12 is connected with the convection section header 7, and the multiple convection sections can better realize the exchange of the heat carrier and the heat inside the biological furnace.
In a preferred embodiment, the first convection section 9, the second convection section 10, the third convection section 11 and the fourth convection section 12 adopt a multi-stage parallel or series structure, and the tube piece spacing of each stage of convection section is gradually reduced along with the flow direction of the flue gas.
In a preferred embodiment, the end of the ceiling tube 5 remote from the radiant section coil 4 is connected to an outlet header 8, and the heat carrier can enter the outlet header 8 through the ceiling tube 5 and then exit through the outlet header 8 for heat rejection by the thermal plant.
The implementation mode is specifically as follows: when the biomass gasification furnace is used, biomass gasification gas generated by a biomass furnace is introduced into a combustion chamber 2 through negative pressure, the biomass gasification gas is ignited by a combustor 3, the front part of hot smoke generated by biomass gasification combustion is folded to enter the radiation section coil 2 and the outside of a ceiling pipe 3, then the hot smoke sequentially enters a first convection section 9, a second convection section 10, a third convection section 11 and a fourth convection section 12, and finally is discharged through a smoke outlet 13, a heat carrier is introduced through an inlet header 6 and then enters a convection section header 7, so that the heat carrier sequentially passes through the fourth convection section 12, the third convection section 11, the second convection section 10 and the first convection section 9, the heat carrier exchanges heat with heat generated by combustion in the furnace body 1 in a plurality of convection sections, the heat carrier in the first convection section 9 enters the radiation section coil 2 for continuous heat exchange, the heat carrier in the radiation section coil 2 enters the ceiling pipe 3, and the heat carrier in the ceiling pipe 3 enters an outlet header 8 and then is discharged for heating equipment.
The utility model discloses adapt to all kinds of living beings gas making fuel, guarantee stable burning. The adiabatic combustion chamber is adopted, the temperature of the combustion chamber is always kept between 1000 and 1100 ℃ for various gases with low heat value, high water content and high tar content, the burnout rate is high, and the generation amount of nitrogen oxides is small; the utility model is safe and reliable, the burner is provided with a multi-stage gas emergency cut-off and discharge device, the combustion chamber is a six-sided heavy furnace wall and is provided with an explosion door, the gas combustion of the heating furnace is safe and reliable, and the accident loss is small; the utility model discloses the thermal efficiency is high, and living beings gas making calorific value is low, and the radiation heat transfer is few, convection heat transfer is many, adopts radiation section + multistage convection section structure, guarantees that the cigarette temperature is less than or equal to heat carrier import temperature +20 ℃.
The points to be finally explained are: first, in the description of the present invention, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," "connecting," and "connecting" should be understood broadly, and may be a mechanical connection or an electrical connection, or a connection between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;
secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are referred to, and other structures can refer to the common design, and under the condition of no conflict, the same embodiment and different embodiments of the present invention can be combined with each other;
and finally: the above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.