CN204529765U - A kind of biomass gasification fired heating system for Industrial Stoves - Google Patents

A kind of biomass gasification fired heating system for Industrial Stoves Download PDF

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Publication number
CN204529765U
CN204529765U CN201420819512.6U CN201420819512U CN204529765U CN 204529765 U CN204529765 U CN 204529765U CN 201420819512 U CN201420819512 U CN 201420819512U CN 204529765 U CN204529765 U CN 204529765U
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China
Prior art keywords
outlet
gas
temperature
kiln
inlet
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CN201420819512.6U
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Chinese (zh)
Inventor
詹昊
汤广稳
苏德仁
邓立新
张大林
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广东正鹏生物质能源科技有限公司
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    • Y02P20/124

Abstract

The utility model relates to a kind of biomass gasification fired heating system for Industrial Stoves, comprising: kiln, is provided with exhanst gas outlet and combustion inlet; Pyrolyzer, is provided with heat tunnel, pyrolysis gas outlet and material outlet, and described heat tunnel entrance connects the exhanst gas outlet of kiln; The vapourizing furnace in inclusive reaction district, described pyrolysis gas outlet passes to reaction zone by pipeline, and the material inlet of described vapourizing furnace connects the material outlet of pyrolyzer by pipeline, the gas outlet of described vapourizing furnace passes to the combustion inlet of kiln; And interchanger, described interchanger comprises the high temperature inlet, the low-temperature outlet that are interconnected, and the low-temperature inlet be interconnected, hot outlet, and described high temperature inlet connects the pneumatic outlet of kiln, and described hot outlet is passed in reaction zone by pipeline.Native system improves efficiency of utilization, makes the heat supply of biological fuel gas energy stability and high efficiency in Industrial Stoves.The utility model can be applicable to biological fuel gas to kiln heat supply.

Description

A kind of biomass gasification fired heating system for Industrial Stoves

Technical field

The utility model relates to gasifying biomass and combustion field, particularly a kind of biomass gasification fired heating system for Industrial Stoves.

Background technology

Biological fuel gas is the gas that biomass are transformed by pyrolytic gasification reaction, is that the higher-grade belonging to biomass energy utilizes.Compare solid biomass, the use range of biological fuel gas has been widened in the change of Energy harvesting form, can be widely used in Industrial Stoves field, as molten aluminium stove, steel annealing stove, glass furnace etc.In addition, due to the characteristic of biomass energy itself, biological fuel gas is clean with it, burning pollutant discharges few advantage, can effectively substitute conventional fossil fuel and be applied in Industrial Stoves field, meet the environmental requirement of this field to fuel, effectively alleviate environmental protection pressure.

Compare traditional gas fossil oil, as Sweet natural gas, oil liquefied gas etc., biological fuel gas belongs to fuel gas with low heat value in one, and calorific value usually can at 4 ~ 12 MJ/Nm 3regulate.And Industrial Stoves carry out the operations such as melting, calcining, thermal treatment usually under the high temperature conditions, need the fire box temperature of maintenance higher, usually more than 1000 DEG C.On the one hand, the flue-gas temperature that Industrial Stoves produce is very high, carries quite a few heat; On the other hand, in employing, low heat value biomass gas heating is in Industrial Stoves, and the exhaust gas volumn of generation is large, and rate of heat transfer is comparatively slow, and temperature is subject to a definite limitation.Therefore, how to be coupled from gasification, and combustion whole system aspect, make full use of each several part heat, improve the overall thermal utilising efficiency of biological fuel gas in Industrial Stoves heat supplying process, can stability and high efficiency coupling Industrial Stoves processing requirement, being the emphasis that biological fuel gas Industrial Stoves heat supply investigation and application is paid close attention to, is also the necessary factor of biological fuel gas Industrial Stoves heat supply large-scale promotion.

Utility model content

In order to overcome above-mentioned technical problem, the purpose of this utility model is to provide a kind of biomass gasification fired heating system for Industrial Stoves, thus improves efficiency of utilization.

The technical scheme that the utility model adopts is:

For a biomass gasification fired heating system for Industrial Stoves, comprising:

Kiln, is provided with exhanst gas outlet and combustion inlet;

Pyrolyzer, is provided with heat tunnel, pyrolysis gas outlet and material outlet, and described heat tunnel entrance connects the exhanst gas outlet of kiln;

The vapourizing furnace in inclusive reaction district, described pyrolysis gas outlet passes to reaction zone by pipeline, and the material inlet of described vapourizing furnace connects the material outlet of pyrolyzer by pipeline, the gas outlet of described vapourizing furnace passes to the combustion inlet of kiln;

And interchanger, described interchanger comprises the high temperature inlet, the low-temperature outlet that are interconnected, and the low-temperature inlet be interconnected, hot outlet, and described high temperature inlet connects the pneumatic outlet of kiln, and described hot outlet is passed in reaction zone by pipeline.

As the further improvement of technique scheme, described reaction zone comprises top-down reduction zone and oxidation zone, and described pyrolysis gas outlet and hot outlet are connected to oxidation zone.

As the further improvement of technique scheme, the low-temperature outlet of described interchanger is connected to waste heat boiler.

As the further improvement of technique scheme, described waste heat boiler is provided with vapour outlet, and described vapour outlet connects the reduction zone of vapourizing furnace by pipeline.

As the further improvement of technique scheme, the outlet of the heat tunnel of described pyrolyzer is connected to the entrance of waste heat boiler by pipeline.

As the further improvement of technique scheme, the combustion inlet place of described kiln is provided with gas burner, and described gas burner connects the gas outlet of vapourizing furnace.

As the further improvement of technique scheme, described gas burner is provided with combustion-supporting gas entrance, and the hot outlet of described interchanger connects combustion-supporting gas entrance by pipeline.

The beneficial effects of the utility model are: biomass burning combustion gas is produce high-temperature flue gas after kiln heat supply, because containing a large amount of waste heat in high-temperature flue gas, a part for high-temperature flue gas is passed into after pyrolysis first being forced to biomass in pyrolyzer and gasify in vapourizing furnace, reduce the tar ingredients in biological fuel gas, improve system stability, high-temperature flue gas a part of in addition and gaseous media carry out heat exchange in interchanger, gaseous media is heated, the gaseous media of high temperature passes into the reaction zone of Reaktionsofen afterwards, improve the degree of oxidation of gasification and combustion processes, in general, native system improves efficiency of utilization, make the heat supply of biological fuel gas energy stability and high efficiency in Industrial Stoves.

Accompanying drawing explanation

Below in conjunction with drawings and embodiments, the utility model is further illustrated.

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the schematic diagram of interchanger.

Embodiment

The biomass gasification fired heating system for Industrial Stoves as shown in Figure 1, comprises kiln 1, pyrolyzer 2, vapourizing furnace 3, interchanger 4 and waste heat boiler 5.

Kiln 1 is provided with exhanst gas outlet 11 and combustion inlet, after biomass fuel gas firing, produces a large amount of energy heat supplies in kiln 1, and the high-temperature flue gas that kiln 1 produces is discharged from exhanst gas outlet 11.

Pyrolyzer 2 is provided with heat tunnel, pyrolysis gas outlet 21 and material outlet 22.Heat tunnel is used for passing into high-temperature gas, utilizes the heat of high-temperature flue gas to carry out pressure pyrolysis to the biomass of inside.The entrance of heat tunnel connects the exhanst gas outlet 11 of kiln 1, thus directly uses the high-temperature flue gas of kiln 1 as thermal source.Force pyrolysis to produce pyrolysis gas and charcoal, pyrolysis gas is discharged from pyrolysis gas outlet 21, and pyrolysis gas outlet 21 temperature controls more than 450 DEG C, and charcoal is discharged from material outlet 22.

Vapourizing furnace 3 is provided with material inlet, gas outlet, and its inside is also provided with reaction zone.In reaction zone, product---pyrolysis gas and the charcoal of main process pyrolyzer 2, carry out gasification reaction, produce the biological fuel gas of high temperature in stove.The pyrolysis gas outlet 21 of pyrolyzer 2 passes to reaction zone by pipeline for this reason, for reaction zone provides pyrolysis gas; The material inlet of vapourizing furnace 3 connects the material outlet 22 of pyrolyzer 2, the charcoal produced receive biomass pyrolytic from pyrolyzer 2 after by pipeline; Gas outlet passes to the combustion inlet of kiln 1, for kiln 1 provides the high-temperature biomass gas of burning.

Interchanger 4 is air preheater in the present embodiment.As shown in Figure 2, interchanger 4 is provided with the high temperature inlet 41, the low-temperature outlet 42 that are interconnected, thus forms flue gas heat exchange passage; Also be provided with the low-temperature inlet 44, the hot outlet 43 that are interconnected, thus form gaseous media heat exchanger channels.High temperature inlet 41 connects the exhanst gas outlet 11 of kiln 1, and low-temperature inlet 44 is connected with gas blower 7 by pipeline, and hot outlet 43 is passed in reaction zone by pipeline.High-temperature flue gas enters flue gas heat exchange passage by high temperature inlet 41, gaseous media enters gaseous media heat exchanger channels by low-temperature inlet 44, high-temperature flue gas and gaseous media generation heat exchange afterwards, high-temperature flue-gas reduces and becomes the lower middle temperature flue gas of temperature, cryogenic gas medium heats up into high temperature gas medium, and enters reaction zone.In embodiment, gaseous media is air, oxygen enrichment.Gaseous media is in the temperature of low-temperature inlet 44 at 25 ~ 30 DEG C, and the temperature of high temperature gas medium is at 600 ~ 800 DEG C.

By above-mentioned structure, the heat of biological fuel gas is used for kiln 1, and kiln 1 heat produced in high-temperature flue gas reasonably feeds back in pyrolyzer 2 and vapourizing furnace 3, and the heat in system is reasonably utilized, and is conducive to the efficiency of utilization of raising system.

As shown in Figure 1, in the present embodiment, reaction zone comprises top-down reduction zone 31 and oxidation zone 32, and pyrolysis gas outlet 21 and hot outlet 43 are all connected to oxidation zone 32.Therefore, pyrolysis gas and high temperature gas medium first burn in oxidation zone 32, and heat supply is in reduction zone 31.Pass into water vapor in reduction zone 31, burning in the charcoal after water vapor, pyrolysis and oxidation zone 32, the gas produced reduces in reduction zone 31, reforming reaction, and final production high-temperature biomass gas, temperature is more than 350 DEG C.

In the present embodiment, the low-temperature outlet 42 of interchanger 4 is connected to waste heat boiler 5, thus makes full use of the heat of middle temperature flue gas.Preferably, waste heat boiler 5 is provided with water inlet and vapour outlet 51, soft water enters waste heat boiler 5 from water inlet, water vapor is flashed to by after middle temperature flue gas heating, because vapour outlet 51 is by the reduction zone 31 of pipeline connection vapourizing furnace 3, therefore the water vapor generated in waste heat boiler 5 can be directly used in the reforming reaction of reduction zone 31, and the heat of middle temperature flue gas is also used appropriately.Exception, waste heat boiler 5 is an external induced draft fan 8 also, for the gas flow of whole system provides power.

Preferably, the outlet of the heat tunnel of pyrolyzer 2 is connected to the entrance of waste heat boiler 5 by pipeline.High-temperature flue gas is to after the biomass heating in pyrolyzer 2, and temperature reduces, and in discharging with interchanger 4, warm flue gas enters waste heat boiler 5 after converging jointly.

In embodiment, the combustion inlet place of kiln 1 is provided with gas burner 6, and gas burner 6 connects the gas outlet of vapourizing furnace 3, in order to the biological fuel gas of preparation in combustion gasification stove 3.Gas burner 6 is provided with combustion-supporting gas entrance 61, the hot outlet 43 of interchanger 4 connects combustion-supporting gas entrance 61 by pipeline, in high temperature gas medium, a part enters oxidation zone 32, another part enters gas burner 6 from combustion-supporting gas entrance 61, for the burning of biological fuel gas provides combustion-supporting gas.

In the present embodiment, the pipeline of various gas conveying all takes Insulation, makes surface temperature be no more than 70 DEG C, as the pipeline of high-temperature flue gas, the pipeline etc. of high temperature gas medium.

Certainly, the utility model is not limited to above-mentioned embodiment, those of ordinary skill in the art also can make equivalent variations or replacement under the prerequisite without prejudice to the utility model spirit, and these equivalent modification or replacement are all included in the application's claim limited range.

Claims (7)

1., for a biomass gasification fired heating system for Industrial Stoves, it is characterized in that, comprising:
Kiln (1), is provided with exhanst gas outlet (11) and combustion inlet;
Pyrolyzer (2), is provided with heat tunnel, pyrolysis gas outlet (21) and material outlet (22), and the entrance of described heat tunnel connects the exhanst gas outlet (11) of kiln (1);
The vapourizing furnace (3) in inclusive reaction district, described pyrolysis gas outlet (21) passes to reaction zone by pipeline, the material inlet of described vapourizing furnace (3) connects the material outlet (22) of pyrolyzer (2) by pipeline, the gas outlet of described vapourizing furnace (3) passes to the combustion inlet of kiln (1);
And interchanger (4), described interchanger (4) comprises the high temperature inlet (41), the low-temperature outlet (42) that are interconnected, and the low-temperature inlet be interconnected (44), hot outlet (43), described high temperature inlet (41) connects the exhanst gas outlet (11) of kiln (1), and described hot outlet (43) is passed in reaction zone by pipeline.
2. the biomass gasification fired heating system for Industrial Stoves according to claim 1, it is characterized in that: described reaction zone comprises top-down reduction zone (31) and oxidation zone (32), described pyrolysis gas outlet (21) and hot outlet (43) are all connected to oxidation zone (32).
3. the biomass gasification fired heating system for Industrial Stoves according to claim 2, is characterized in that: the low-temperature outlet (42) of described interchanger (4) is connected to waste heat boiler (5).
4. the biomass gasification fired heating system for Industrial Stoves according to claim 3, it is characterized in that: described waste heat boiler (5) is provided with vapour outlet (51), described vapour outlet (51) connects the reduction zone (31) of vapourizing furnace (3) by pipeline.
5. the biomass gasification fired heating system for Industrial Stoves according to claim 3, is characterized in that: the outlet of the heat tunnel of described pyrolyzer (2) is connected to the entrance of waste heat boiler (5) by pipeline.
6. the biomass gasification fired heating system for Industrial Stoves according to any one of claim 1 to 5, it is characterized in that: the combustion inlet place of described kiln (1) is provided with gas burner (6), described gas burner (6) connects the gas outlet of vapourizing furnace (3).
7. the biomass gasification fired heating system for Industrial Stoves according to claim 6, it is characterized in that: described gas burner (6) is provided with combustion-supporting gas entrance (61), the hot outlet (43) of described interchanger (4) connects combustion-supporting gas entrance (61) by pipeline.
CN201420819512.6U 2014-12-18 2014-12-18 A kind of biomass gasification fired heating system for Industrial Stoves CN204529765U (en)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105571337A (en) * 2016-01-27 2016-05-11 广东工业大学 Energy-saving industrial furnace adopting biomass gasification combustion power generation system
CN107421320A (en) * 2017-08-15 2017-12-01 安徽卓煌机械设备有限公司 A kind of biomass gasification fired energy supply cement rotary kiln

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105571337A (en) * 2016-01-27 2016-05-11 广东工业大学 Energy-saving industrial furnace adopting biomass gasification combustion power generation system
CN105571337B (en) * 2016-01-27 2019-06-14 广东工业大学 Using the energy-saving industrial kiln of biomass gasification fired electricity generation system
CN107421320A (en) * 2017-08-15 2017-12-01 安徽卓煌机械设备有限公司 A kind of biomass gasification fired energy supply cement rotary kiln

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