CN111256154A - Coal-fired power plant coupling sludge blending combustion device and blending combustion method - Google Patents
Coal-fired power plant coupling sludge blending combustion device and blending combustion method Download PDFInfo
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- CN111256154A CN111256154A CN202010208552.7A CN202010208552A CN111256154A CN 111256154 A CN111256154 A CN 111256154A CN 202010208552 A CN202010208552 A CN 202010208552A CN 111256154 A CN111256154 A CN 111256154A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/001—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals for sludges or waste products from water treatment installations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/033—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment comminuting or crushing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/04—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment drying
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
- F23J15/025—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow using filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/10—Drying by heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/80—Shredding
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/12—Sludge, slurries or mixtures of liquids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2215/00—Preventing emissions
- F23J2215/20—Sulfur; Compounds thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2217/00—Intercepting solids
- F23J2217/10—Intercepting solids by filters
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a coupling sludge blending combustion device and a coupling sludge blending combustion method for a coal-fired power plant, and the coupling sludge blending combustion device comprises a sludge pool, a sludge conveyer, a sludge dryer, a dry sludge bin, a fan grinder and a boiler burner, wherein the sludge dryer is sequentially connected with a pre-dust collector, a furnace smoke fan, a dust collector, a desulfurizing tower and a chimney through a flue; wet flue gas generated after drying wet sludge is dedusted and desulfurized and then is discharged into the atmosphere through a chimney, so that the aims of sludge drying and mixed combustion are fulfilled. The system adopts the technical scheme of drying, grinding and burning, minimizes the influence on boiler burning, heating surface abrasion and the like, has no emission of malodorous gas in a totally closed system, realizes harmless, quantitative reduction and resource utilization of sludge, and has better social and economic benefits.
Description
Technical Field
The invention relates to the technical field of sludge treatment, in particular to a coupling sludge co-combustion device and a co-combustion method for a coal-fired power plant.
Background
With the continuous development of urbanization, the storage amount and increment of sludge in each city are increased sharply, and the amount of sludge generated by a municipal sewage treatment plant in 2020 is expected to break through 6000 million, which seriously troubles the development of modern cities. The disposal mode of the sludge mainly comprises landfill, land utilization, building material utilization, incineration and the like, wherein the urban sludge treatment mainly comprises land landfill, and each main urban landfill site is close to saturation so as to gradually form a sludge enclosure phenomenon. With the stricter urban environmental protection policy, the proportion of direct landfill treatment of urban sludge is gradually reduced.
Sludge incineration can not only eliminate harmful substances, but also greatly reduce the volume of sludge and realize the innocent treatment of sludge, but the sludge is generally greatly influenced on a boiler and auxiliary equipment thereof when being mixed and burnt, malodorous gas has great influence on the environment, and secondary pollution caused by waste liquid is easy to generate.
Disclosure of Invention
The invention aims to solve the problems of high sludge treatment difficulty and poor environmental protection, and provides a coupling sludge co-combustion device and a co-combustion method for a coal-fired power plant. The coal-fired unit coupled sludge power generation is used as a sludge incineration utilization form, and has the unique advantages of high treatment capacity, strong adaptability, high system efficiency and the like.
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:
the utility model provides a coal fired power plant coupling mud mixes fever device, includes the sludge impoundment, and the sludge impoundment export has connected gradually sludge conveyer and sludge dryer, and sludge dryer's dry sludge export has connected gradually dry sludge storehouse and fan grinding machine, and the exit linkage of fan grinding machine has the boiler burner.
The invention is further improved in that:
the flue gas outlet of the sludge dryer is sequentially connected with a pre-dust collector and a furnace smoke fan, and the outlet of the furnace smoke fan is sequentially connected with a dust collector, a desulfurizing tower and a chimney.
The outlet of the boiler burner is connected with an economizer through a flue, the outlet of the economizer is connected with a sludge dryer through the flue, and the wet sludge is dried after the high-temperature flue gas conveyed from the outlet of the economizer is contacted and mixed with the wet sludge in the sludge dryer.
The sludge dryer is a cyclone drying tower, guide vanes are arranged in the cyclone drying tower, a sludge ejector is arranged at the top of the cyclone drying tower and consists of one or more nozzles, wet sludge is sprayed downwards from the top of the cyclone drying tower, and high-temperature flue gas is tangentially introduced from the lower part of the cyclone drying tower and is led out from the top of the cyclone drying tower.
The sludge dryer is a spiral dryer, a spiral conveying device is arranged in the spiral dryer, wet sludge enters from the front end of the spiral dryer and is led out from the rear end of the spiral dryer, high-temperature flue gas enters from the lower part of the spiral dryer and is led out from the upper part of the spiral dryer.
The system also comprises an interlocking protection system, wherein the control end of the interlocking protection system is connected with the sludge conveyor, the fan grinder and the boiler smoke blower and is used for stopping the sludge conveyor, the fan grinder and the boiler smoke blower when the boiler has an accident, closing corresponding gates and cutting off the gates from the boiler system.
A blending combustion method adopting a coal-fired power plant coupled sludge blending combustion device comprises the following steps:
and 3, burning the dried and ground sludge by a boiler burner.
In the step 1, the wet sludge is dried by a sludge dryer to generate low-temperature wet flue gas, the low-temperature wet flue gas enters a pre-dust remover through the upper part of the sludge dryer, the low-temperature wet flue gas after pre-dust removal enters the dust remover and a desulfurization tower through a furnace smoke fan to remove dust and desulfurization, and then the low-temperature wet flue gas is discharged into the atmosphere through a chimney.
The drying agent is one or more of hot flue gas, cold flue gas, hot air and cold air.
Compared with the prior art, the invention has the following beneficial effects:
the invention relates to a coupling sludge blending combustion device for a coal-fired power plant, which comprises a sludge pool, wherein a sludge conveyor and a sludge dryer are sequentially connected to the outlet of the sludge pool, a dry sludge bin, a fan grinder and a boiler burner are sequentially connected to the lower part of the sludge dryer, a pre-dust remover and a boiler smoke blower are sequentially connected to the upper part of the sludge dryer, and a dust remover, a desulfurizing tower and a chimney are sequentially connected to the outlet of the boiler smoke blower. The sludge dryer increases the contact area of sludge and flue gas, improves the drying efficiency, and reduces the energy consumption of the system while ensuring the drying of the sludge by optimizing the amount of the flue gas entering the sludge dryer. The device provided by the invention can prevent a large amount of sludge wastewater from entering the hearth, minimize the influence on boiler combustion, heating surface abrasion and the like, effectively treat harmful gas generated by sludge combustion and reduce environmental pollution.
The invention relates to a blending combustion method of a coupling sludge blending combustion device of a coal-fired power plant, which adopts the technical scheme of drying, grinding and combusting, integrates drying, grinding and combusting, dries wet sludge, grinds the wet sludge, and combusts the wet sludge by a boiler burner, thereby preventing a large amount of sludge wastewater from entering a hearth and minimizing the influence on boiler combustion, heating surface abrasion and the like; wet flue gas after drying wet sludge is discharged into the atmosphere through a chimney after dust removal and desulfurization, so that the environmental pollution is reduced. In addition, the invention is a totally closed system, no foul gas is emitted in the operation process and no secondary pollution is generated by waste liquid, the energy consumption of the system in operation is low, and the sludge is harmless, reduced and recycled.
Furthermore, a sludge ejector is arranged at the top of the cyclone drying tower, sludge flowing from top to bottom is fully contacted and mixed with flue gas flowing from bottom to top, the contact area is increased, the drying efficiency is improved, and the drying and inertial separation of the sludge are realized.
Furthermore, the furnace smoke fan can be arranged on an inlet flue or an outlet flue of the sludge dryer, and the furnace smoke fan adjusts the amount of high-temperature smoke entering the sludge dryer through frequency conversion control according to the amount of sludge pumped by the sludge conveyor, so that dry sludge with different water contents is obtained. On the premise of ensuring the drying of the sludge, the high-temperature flue gas extraction is optimized, and the influence on the unit energy consumption is reduced.
Drawings
FIG. 1 is a schematic diagram of a coupled sludge co-combustion device of a coal-fired power plant according to the present invention;
fig. 2 shows two different forms of sludge dryers according to the invention, (a) a cyclone drying tower, (b) a screw dryer.
Wherein: 1-a sludge tank; 2-sludge conveyer; 3-a sludge dryer; 4-dry sludge bin; 5-fan grinder; 6-boiler burner; 7-a pre-deduster; 8-a flue gas blower; 9-a cyclone drying tower; 10-sludge ejector; 11-a spiral dryer; 12-an economizer; 13-a dust remover; 14-a desulfurization tower; 15-chimney.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments, and are not intended to limit the scope of the present disclosure. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Various structural schematics according to the disclosed embodiments of the invention are shown in the drawings. The figures are not drawn to scale, wherein certain details are exaggerated and possibly omitted for clarity of presentation. The shapes of various regions, layers and their relative sizes and positional relationships shown in the drawings are merely exemplary, and deviations may occur in practice due to manufacturing tolerances or technical limitations, and a person skilled in the art may additionally design regions/layers having different shapes, sizes, relative positions, according to actual needs.
In the context of the present disclosure, when a layer/element is referred to as being "on" another layer/element, it can be directly on the other layer/element or intervening layers/elements may be present. In addition, if a layer/element is "on" another layer/element in one orientation, then that layer/element may be "under" the other layer/element when the orientation is reversed.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The invention is described in further detail below with reference to the accompanying drawings:
as shown in fig. 1, the embodiment exemplifies a coupling sludge blending combustion device of a coal-fired power plant, which comprises a sludge tank 1, wherein an outlet of the sludge tank 1 is sequentially connected with a sludge conveyor 2 and a sludge dryer 3, a dry sludge outlet of the sludge dryer 3 is sequentially connected with a dry sludge bin 4 and a fan grinder 5, and an outlet of the fan grinder 5 is connected with a boiler burner 6. The flue gas outlet of the sludge dryer 3 is sequentially connected with a pre-dust collector 7 and a furnace flue gas fan 8, and the outlet of the furnace flue gas fan 8 is sequentially connected with a dust collector 13, a desulfurizing tower 14 and a chimney 15. The furnace smoke blower 8 can be arranged on an inlet flue or an outlet flue of the sludge dryer 3, and the furnace smoke blower 8 adjusts the amount of high-temperature smoke entering the sludge dryer 3 through frequency conversion control according to the amount of sludge pumped by the sludge conveyor 2 to obtain dry sludge with different water contents. On the premise of ensuring the drying of the sludge, the high-temperature flue gas extraction is optimized, and the influence on the unit energy consumption is reduced. The outlet of the boiler burner 6 is connected with an economizer 12 through a flue, the outlet of the economizer 12 is connected with the sludge dryer 3 through the flue, and the wet sludge is dried after the high-temperature flue gas conveyed from the outlet of the economizer 12 is contacted and mixed with the wet sludge in the sludge dryer 3. The sludge dryer increases the contact area of sludge and flue gas, improves the drying efficiency, and reduces the energy consumption of the system while ensuring the drying of the sludge by optimizing the amount of flue gas entering the sludge dryer.
As shown in fig. 2, the sludge dryer 3 includes two forms, one is a cyclone drying tower 9, as shown in fig. 2(a), guide vanes are arranged inside the cyclone drying tower 9, a sludge ejector 10 is arranged on the top of the cyclone drying tower 9, the sludge ejector 10 is composed of one or more nozzles, wet sludge is ejected downwards from the top of the cyclone drying tower 9, high-temperature flue gas is tangentially introduced from the lower part of the cyclone drying tower 9 and is led out from the top of the cyclone drying tower 9, sludge flowing from top to bottom and flue gas flowing from bottom to top are fully contacted and mixed, the contact area is increased, the drying efficiency is improved, and drying and inertial separation of sludge are realized. Another form of the sludge dryer 3 is a spiral dryer 11, as shown in fig. 2(b), a spiral conveying device is arranged inside the spiral dryer 11, wet sludge enters from the front end of the spiral dryer 11, the rear end of the spiral dryer is led out, high-temperature flue gas enters from the lower part of the spiral dryer 11, and is led out from the upper part of the spiral dryer, and the sludge is conveyed from one end to the other end under the action of the spiral conveying device and is dried by the high-temperature flue gas in the process.
The coupling sludge co-combustion device of the coal-fired power plant in the embodiment further comprises an interlocking protection system, wherein a control end of the interlocking protection system is connected with the sludge conveyor 2, the fan grinder 5 and the boiler smoke blower 8, the sludge conveyor 2, the fan grinder 5 and the boiler smoke blower 8 can be stopped when a boiler has an accident, corresponding gates are closed, and the gate is cut off from the boiler system, so that safety accidents are reduced.
A blending combustion method adopting a coal-fired power plant coupled sludge blending combustion device comprises the following steps: wet sludge is conveyed to a sludge dryer 3 through a sludge conveyor 2 for drying; the dry sludge dried by the sludge dryer 3 enters a dry sludge bin 4, and the dry sludge in the dry sludge bin 4 and the drying agent enter a fan grinder 5 together for drying and grinding; the dried and ground sludge is combusted by a boiler burner 6. The low-temperature wet flue gas after drying wet sludge enters a pre-dust collector 7 through the upper part of the sludge dryer 3, the low-temperature wet flue gas after pre-dust collection enters a dust collector 13 and a desulfurizing tower 14 through a flue gas blower 8 for dust collection and desulfurization, and then is discharged into the atmosphere through a chimney 15. The drying agent is one or more of hot flue gas, cold flue gas, hot air and cold air.
In this embodiment, the technical scheme of drying, grinding and burning is adopted, so that the influences of a large amount of sludge wastewater on boiler combustion, heating surface abrasion and the like are avoided being minimized. Sludge and high temperature flue gas fully contact among the sludge dryer, have increased sludge and flue gas area of contact, have improved drying efficiency, through optimizing the flue gas volume that gets into the sludge dryer, reduce the system energy consumption when guaranteeing sludge drying. The totally-enclosed operation has no emission of malodorous gas and secondary pollution caused by waste liquid, the system has low energy consumption in operation, and realizes harmless, quantitative reduction and resource utilization of sludge.
The above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical idea of the present invention falls within the protection scope of the claims of the present invention.
Claims (9)
1. The utility model provides a coal fired power plant coupling mud mixes fever device, its characterized in that includes sludge impoundment (1), and sludge impoundment (1) export has connected gradually mud conveyer (2) and sludge dryer (3), and the dry sludge outlet of sludge dryer (3) has connected gradually dry sludge warehouse (4) and fan grinding machine (5), and the exit linkage of fan grinding machine (5) has boiler burner (6).
2. The coupled sludge co-combustion device of the coal-fired power plant according to claim 1, wherein a flue gas outlet of the sludge dryer (3) is sequentially connected with a pre-dust collector (7) and a flue gas blower (8), and an outlet of the flue gas blower (8) is sequentially connected with a dust collector (13), a desulfurizing tower (14) and a chimney (15).
3. The coupled sludge co-combustion device of the coal-fired power plant as recited in claim 1, wherein an outlet of the boiler burner (6) is connected with an economizer (12) through a flue, an outlet of the economizer (12) is connected with the sludge dryer (3) through a flue, and the wet sludge is dried after the high-temperature flue gas delivered from the outlet of the economizer (12) is contacted and mixed with the wet sludge in the sludge dryer (3).
4. The coal-fired power plant coupling sludge blending combustion device as defined in claim 1, wherein the sludge dryer (3) is a cyclone drying tower (9), guide vanes are arranged inside the cyclone drying tower (9), a sludge injector (10) is arranged on the top of the cyclone drying tower (9), the sludge injector (10) is composed of one or more nozzles, wet sludge is injected downwards from the top of the cyclone drying tower (9), and high-temperature flue gas is tangentially introduced from the lower part of the cyclone drying tower (9) and is led out from the top of the cyclone drying tower (9).
5. The coupled sludge co-combustion device of the coal-fired power plant as recited in claim 1, wherein the sludge dryer (3) is a spiral dryer (11), a spiral conveying device is arranged inside the spiral dryer (11), wet sludge enters from the front end of the spiral dryer (11) and is led out from the rear end, and high-temperature flue gas enters from the lower part and is led out from the upper part of the spiral dryer (11).
6. The coupled sludge co-combustion device of the coal-fired power plant as claimed in claim 2, further comprising an interlocking protection system, wherein a control end of the interlocking protection system is connected with the sludge conveyor (2), the fan grinder (5) and the flue gas blower (8) and is used for stopping the sludge conveyor (2), the fan grinder (5) and the flue gas blower (8) and closing corresponding gates to cut off the sludge conveyor, the fan grinder (5) and the flue gas blower (8) from the boiler system when the boiler has an accident.
7. The co-combustion method of the coal-fired power plant coupled sludge co-combustion device in the claim 2 is characterized by comprising the following steps:
step 1, wet sludge is conveyed to a sludge dryer (3) through a sludge conveyor (2) for drying;
step 2, dry sludge dried by the sludge dryer (3) enters a dry sludge bin (4), and dry sludge in the dry sludge bin (4) and a drying agent enter a fan grinder (5) together for drying and grinding;
and 3, burning the dried and ground sludge by a boiler burner (6).
8. The blending combustion method according to claim 7, characterized in that in step 1, the wet sludge is dried by a sludge dryer (3) to generate low-temperature wet flue gas, the low-temperature wet flue gas enters a pre-dust remover (7) through the upper part of the sludge dryer (3), the low-temperature wet flue gas after pre-dust removal enters a dust remover (13) and a desulfurizing tower (14) through a flue gas blower (8) for dust removal and desulfurization, and then is discharged into the atmosphere through a chimney (15).
9. The blending combustion method as claimed in claim 7, wherein the drying agent is one or more of hot flue gas, cold flue gas, hot air and cold air.
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| CN202010208552.7A CN111256154A (en) | 2020-03-23 | 2020-03-23 | Coal-fired power plant coupling sludge blending combustion device and blending combustion method |
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| CN202010208552.7A CN111256154A (en) | 2020-03-23 | 2020-03-23 | Coal-fired power plant coupling sludge blending combustion device and blending combustion method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112728559A (en) * | 2021-01-26 | 2021-04-30 | 西安热工研究院有限公司 | Pre-drying sludge blending combustion system |
| CN113896401A (en) * | 2021-10-22 | 2022-01-07 | 上海发电设备成套设计研究院有限责任公司 | Coupling sludge drying device system and method for coal-fired power generating unit |
| CN117466516A (en) * | 2023-11-24 | 2024-01-30 | 河北长润环保科技有限公司 | Sludge drying coupling combustion system and process thereof |
-
2020
- 2020-03-23 CN CN202010208552.7A patent/CN111256154A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112728559A (en) * | 2021-01-26 | 2021-04-30 | 西安热工研究院有限公司 | Pre-drying sludge blending combustion system |
| CN113896401A (en) * | 2021-10-22 | 2022-01-07 | 上海发电设备成套设计研究院有限责任公司 | Coupling sludge drying device system and method for coal-fired power generating unit |
| CN117466516A (en) * | 2023-11-24 | 2024-01-30 | 河北长润环保科技有限公司 | Sludge drying coupling combustion system and process thereof |
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