CN218895408U - Biomass gasification sludge incineration coupling system - Google Patents
Biomass gasification sludge incineration coupling system Download PDFInfo
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- CN218895408U CN218895408U CN202222748640.3U CN202222748640U CN218895408U CN 218895408 U CN218895408 U CN 218895408U CN 202222748640 U CN202222748640 U CN 202222748640U CN 218895408 U CN218895408 U CN 218895408U
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Abstract
The utility model provides a biomass gasification sludge incineration coupling system, which comprises a sludge incinerator, wherein a biomass gasification furnace is arranged at the feed end of the sludge incinerator, the tail part of the sludge incinerator is connected with a waste heat boiler through a high-temperature flue, and a sludge feeding device is arranged at the lower part of the sludge incinerator. The beneficial effects of the utility model are as follows: the utility model solves the problem of the independent incineration auxiliary fuel supply of the sludge by organically combining the combustible gas generated after the biomass gasification with the sludge incineration energy, meanwhile, the problem that the life safety of boiler equipment is seriously endangered by direct caustic soda corrosion of biomass fuel is also solved. The biomass gasification and sludge incineration treatment of the system are cooperated, and a way is provided for realizing sludge reduction, harmless and recycling.
Description
Technical Field
The utility model belongs to the technical field of sludge treatment, and particularly relates to a biomass gasification sludge incineration coupling system.
Background
Sludge generally refers to flocculent materials mixed with solid and liquid generated in sewage treatment plants during sewage treatment, mainly from the process links of a primary sedimentation tank, a secondary sedimentation tank and the like. In China, early sludge is mainly buried, and simple landfill is harmful to environmental sanitation and is unfavorable for ecological civilization construction of China. The national fourteen-five planning schema requires popularization of sludge concentrated incineration harmless treatment, and the harmless treatment rate of municipal sludge reaches 90%. Sludge incineration is a major trend in sludge treatment, is also a main way for realizing sludge reduction, harmless and recycling. However, the existing independent incineration of sludge has the following problems: because the low-level heat productivity of the sludge is low, the source of the sludge is complex, the characteristic difference of the sludge is large, the stability of independent incineration of the sludge is difficult to maintain, the national environment-friendly requirement is difficult to meet, and an auxiliary fuel system is generally required to be arranged to ensure the stability of the sludge. Because biomass fuels are widely available and low in cost, however, because of high alkali metal content, direct caustic soda corrosion seriously jeopardizes boiler equipment life safety. Meanwhile, biomass fuel ash has low melting point, and high-temperature coking is easily caused by independent combustion.
Disclosure of Invention
In order to solve the defects in the prior art, the utility model provides a biomass gasification sludge incineration coupling system, so as to realize stable combustion of the sludge.
The aim of the utility model is achieved by the following technical scheme:
the biomass gasification sludge incineration coupling system comprises a sludge incinerator, wherein a biomass gasification furnace is arranged at the feeding end of the sludge incinerator, the tail part of the sludge incinerator is connected with a waste heat boiler through a high-temperature flue, and a sludge feeding device is arranged at the lower part of the sludge incinerator.
Preferably, one end of the biomass gasifier is connected with a dust remover, and the dust remover is connected with the sludge incinerator through a gasification fuel conveying pipeline system.
Preferably, a burner is arranged between the gasification fuel delivery pipe system and the sludge incinerator.
Preferably, the lower end of the biomass gasification furnace is provided with a gasification furnace air inlet device, the air inlet end of the air inlet device of the gasification furnace is connected with a primary fan of the gasification furnace.
Preferably, the biomass gasification furnace is respectively provided with a biomass feeding device and a bed material adding device.
Preferably, the method comprises the steps of, the biomass feeding device is arranged below the bed material adding device.
Preferably, the bottom of the dust remover is connected with an ash conveying device.
Preferably, a sludge incinerator air inlet device is arranged at the bottom of the sludge incinerator, and the inlet end of the sludge incinerator air inlet device is connected with a sludge incinerator primary fan.
The beneficial effects of the utility model are as follows: according to the utility model, the combustible gas generated after biomass gasification and the sludge incineration energy are organically combined, so that the problem of independent sludge incineration auxiliary fuel supply is solved, and the problem of serious endangerment of the service life safety of boiler equipment due to direct caustic soda incineration of biomass fuel is also solved. The biomass gasification and sludge incineration treatment of the system are cooperated, and a way is provided for realizing sludge reduction, harmless and recycling.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1: the system connection structure of the utility model is schematically shown.
The device comprises a biomass feeding device 1, a bed material adding device 2, a biomass gasifier 3, a dust remover 4, a gasification fuel conveying pipeline system 5, an ash conveying device 6, a gasification furnace air inlet device 7, a gasification furnace primary air fan 8, a burner 9, a sludge feeding device 10, a sludge incinerator 11, a high-temperature flue 12, a sludge incinerator air inlet device 13, a sludge incinerator primary air fan 14 and a waste heat boiler 15.
Detailed Description
The utility model discloses a biomass gasification sludge incineration coupling system, which is used for making the purposes, technical schemes and advantages of the utility model more clear, and is further described in detail below with reference to fig. 1 and an embodiment. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
The utility model provides a biomass gasification sludge incineration coupled system, includes sludge incinerator 11, sludge feed inlet department of the lower part of sludge incinerator 11 is provided with sludge feed device 10, sludge incinerator 11's bottom is provided with sludge incinerator air inlet unit 13, sludge incinerator air inlet unit 13's entrance point is connected with sludge incinerator primary fan 14. Air required by sludge incineration is sent into the sludge incinerator air inlet device 13 by the sludge incinerator primary fan 14, so that the air uniformly enters the gasification furnace at equal pressure, and the fluidized uniformity of the bed layer in the furnace is ensured.
The tail part of the sludge incinerator 11 is connected with a waste heat boiler 15 through a high-temperature flue 12. The feeding end of the sludge incinerator 11 is provided with a biomass gasification furnace 3. One end of the biomass gasification furnace 3 is connected with a dust remover 4, the upper end of the dust remover 4 is connected with a gasification fuel conveying pipeline system 5, and the outlet end of the gasification fuel conveying pipeline system 5 is connected with the sludge incinerator 11 through a burner 9. The lower end of the dust remover 4 is connected with an ash conveying device 6.
The lower extreme of biomass gasification stove 3 is provided with gasifier hot blast blowpipe apparatus 7, the hot blast blowpipe apparatus 7's air inlet end is connected with gasifier primary air fan 8. Air required by biomass gasification is sent to the air inlet device 7 of the gasification furnace through the primary fan 8 of the gasification furnace, so that the air uniformly enters the biomass gasification furnace 3 at equal pressure, and the fluidized uniformity of the bed layer in the furnace is ensured. The biomass gasification furnace 3 is respectively provided with a biomass feeding port and a bed material adding port arranged above the biomass feeding port, and the biomass feeding port and the bed material adding port are respectively connected with a biomass feeding device 1 and a bed material adding device 2.
For a better understanding of the principles of the present utility model, the following brief description of the process of the coupling system of the present utility model is provided:
when the biomass gasification furnace is used, biomass fuel is sent into the biomass gasification furnace 3 through the biomass feeding device 1 to be gasified, gasified dust-containing fuel gas enters the dust remover 4, and the dust-removed fuel gas enters the sludge incinerator 11 through the gasification fuel conveying pipeline system 5 and the combustor 9.
The heat generated after combustion is beneficial to improving the temperature of the flue gas in the sludge incinerator 11, so that on one hand, the stability of sludge incineration is improved, and on the other hand, the sludge incineration is ensured to meet the environment-friendly requirement that the temperature in the sludge incinerator is more than or equal to 850 ℃. Before or during the start-up of the biomass gasification furnace 3, the bed material adding device 2 can be selectively utilized to add the bed material in order to improve the heat storage capacity in the furnace, the gasification stability and the gasification furnace operation load.
The fly ash after biomass gasification is collected by the dust remover 4 and then discharged through the ash conveying device 6. The sludge enters the sludge incinerator 11 through the sludge feeding device 10, and high-temperature flue gas (comprising biomass gasification gas combustion) generated by combustion enters the tail waste heat boiler 5 through the high-temperature flue 12, so that waste heat recovery is realized. The cooled low-temperature flue gas is treated by a flue gas purification system and then discharged after reaching the standard.
The utility model provides a way for realizing sludge reduction, harmlessness and recycling through biomass gasification and sludge incineration. Because biomass fuel ash has low melting point, the temperature of flue gas at the outlet of a hearth of a biomass boiler is required to be lower than 850 ℃, and herbs are required to be controlled within 800 ℃, otherwise, high-temperature coking is easy to cause. The sludge independent incinerator requires that the residence time of the flue gas temperature above 850 ℃ is not less than 2 seconds according to national relevant regulations. The biomass gasification dust removal device and the biomass gasification dust removal method are mutually contradictory, and the combustible gas generated after the biomass gasification dust removal device and the biomass gasification dust removal method are cleaner, so that the contradictory problems can be well solved.
Finally, it should be noted that: the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like refer to an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
And the above embodiments are only for illustrating the technical solution of the present utility model, not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (8)
1. Biomass gasification sludge incineration coupling system, its characterized in that: the device comprises a sludge incinerator, wherein a biomass gasifier is arranged at the feeding end of the sludge incinerator, the tail of the sludge incinerator is connected with a waste heat boiler through a high-temperature flue, and a sludge feeding device is arranged at the lower part of the sludge incinerator.
2. The biomass gasification sludge incineration coupling system according to claim 1, wherein: one end of the biomass gasification furnace is connected with a dust remover, and the dust remover is connected with the sludge incinerator through a gasification fuel conveying pipeline system.
3. The biomass gasification sludge incineration coupling system according to claim 2, wherein: a burner is arranged between the gasification fuel conveying pipeline system and the sludge incinerator.
4. A biomass gasification sludge incineration coupling system according to claim 3, wherein: the lower end of the biomass gasification furnace is provided with a gasification furnace air inlet device, and the air inlet end of the gasification furnace air inlet device is connected with a gasification furnace primary fan.
5. The biomass gasification sludge incineration coupling system according to claim 4, wherein: and the biomass gasification furnace is respectively provided with a biomass feeding device and a bed material adding device.
6. The biomass gasification sludge incineration coupling system according to claim 5, wherein: the biomass feeding device is arranged below the bed material adding device.
7. The biomass gasification sludge incineration coupling system according to claim 6, wherein: the bottom of the dust remover is connected with an ash conveying device.
8. The biomass gasification sludge incineration coupling system according to claim 7, wherein: the bottom of the sludge incinerator is provided with a sludge incinerator air inlet device, and the inlet end of the sludge incinerator air inlet device is connected with a sludge incinerator primary fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222748640.3U CN218895408U (en) | 2022-10-19 | 2022-10-19 | Biomass gasification sludge incineration coupling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222748640.3U CN218895408U (en) | 2022-10-19 | 2022-10-19 | Biomass gasification sludge incineration coupling system |
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| Publication Number | Publication Date |
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| CN218895408U true CN218895408U (en) | 2023-04-21 |
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| CN202222748640.3U Active CN218895408U (en) | 2022-10-19 | 2022-10-19 | Biomass gasification sludge incineration coupling system |
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| CN (1) | CN218895408U (en) |
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