CN108800162B - Online sludge drying and blending combustion system of coal-fired power plant and application thereof - Google Patents
Online sludge drying and blending combustion system of coal-fired power plant and application thereof Download PDFInfo
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- CN108800162B CN108800162B CN201810596960.7A CN201810596960A CN108800162B CN 108800162 B CN108800162 B CN 108800162B CN 201810596960 A CN201810596960 A CN 201810596960A CN 108800162 B CN108800162 B CN 108800162B
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- 238000001035 drying Methods 0.000 title claims abstract description 81
- 239000010802 sludge Substances 0.000 title claims abstract description 80
- 238000002156 mixing Methods 0.000 title claims abstract description 24
- 238000002485 combustion reaction Methods 0.000 title abstract description 14
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 54
- 239000003546 flue gas Substances 0.000 claims abstract description 54
- 239000000428 dust Substances 0.000 claims abstract description 21
- 239000003245 coal Substances 0.000 claims abstract description 18
- 230000003009 desulfurizing effect Effects 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 239000000779 smoke Substances 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 5
- 238000005086 pumping Methods 0.000 claims description 4
- 238000010344 co-firing Methods 0.000 claims 1
- 239000011499 joint compound Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 5
- 238000007599 discharging Methods 0.000 abstract 1
- 238000000605 extraction Methods 0.000 description 9
- 239000002918 waste heat Substances 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 5
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 231100000614 poison Toxicity 0.000 description 4
- 239000003440 toxic substance Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052815 sulfur oxide Inorganic materials 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 244000052616 bacterial pathogen Species 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000599 controlled substance Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 239000010801 sewage sludge Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical class S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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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
-
- 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
-
- 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
- F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
-
- 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
-
- 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
- F23G5/46—Recuperation of heat
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/70—Blending
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2204/00—Supplementary heating arrangements
- F23G2204/10—Supplementary heating arrangements using auxiliary fuel
- F23G2204/101—Supplementary heating arrangements using auxiliary fuel solid fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2206/00—Waste heat recuperation
- F23G2206/10—Waste heat recuperation reintroducing the heat in the same process, e.g. for predrying
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/12—Heat utilisation in combustion or incineration of waste
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Treatment Of Sludge (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention relates to an online sludge drying and blending combustion system of a coal-fired power plant and application thereof, comprising a boiler furnace, a dust remover, a desulfurizing tower, a chimney, a stacking bin, a drying bin, a to-be-blended bin and a blending combustion conveyor, wherein the boiler furnace is connected with a flue, an outlet of the stacking bin is connected with a sludge feeding port of the drying bin, a sludge discharging port of the drying bin is connected with an inlet of the to-be-blended bin, an outlet of the to-be-blended bin is connected with the blending combustion conveyor, the blending combustion conveyor is used for conveying a mixture of dry sludge and coal to the boiler furnace for combustion, a flue gas inlet of the drying bin is connected with an outlet flue of the boiler furnace through an air suction pipeline, and a flue gas outlet of the drying bin is connected with an outlet flue of the boiler furnace through an air return pipeline. According to the invention, the flue gas is guided to enter the sludge drying bin for drying sludge, so that secondary utilization of the flue gas and online drying of the sludge are realized, real-time drying and real-time blending burning of the sludge are realized under the condition that the boiler efficiency is not influenced, and the cost of time-division drying and blending burning and the cost of sludge transportation in the process are reduced.
Description
Technical Field
The invention relates to the technical field of environmental protection treatment, in particular to an online sludge drying and blending combustion system of a coal-fired power plant and application thereof.
Background
The sewage sludge contains a large amount of organic pollutants, germs, heavy metals, cancerogenic chemical substances and other components, the urban sewage treatment capacity is increased year by year along with the acceleration of the urban process in China, the sludge yield of a sewage treatment plant is also increased sharply, and the untreated sludge can cause serious threat to human beings and the ecological environment after entering the environment. At present, harmless incineration treatment is a method for effectively treating sludge, and can effectively reduce and make harmless the sludge.
The sludge co-combustion is one of the main methods for sludge incineration treatment, and can utilize the existing pollutant control device of the coal-fired power plant to treat harmful components such as heavy metals and SO (sulfur oxides) generated in the sludge incineration process 2 NOx, etc. to make the mixed fuel reach the national emission standard after combustion. For the power plant, 60% -70% of the operating cost of the power plant comes from fuel cost, the fuel cost of the coal-fired power plant can be reduced by using the heat value in the sludge to mix and burn the sludge, and the production cost of the power plant is reduced, but the current sludge is required to be dried in a special drying place and then transported to the power plant, and the current sludge cannot be used as it is after being stacked, and the wet sludge is dried by using the waste heat of the flue gas after passing through the economizer and the air preheater, so that the on-site drying and mixing burning are realized, the secondary utilization of the waste heat of the flue gas can be effectively realized along with the drying and burning, and the drying and transportation cost is reduced.
Chinese patent CN207313417U discloses an online sludge drying and blending system of a utility boiler, which comprises a wet sludge bin, a sludge dryer, a coal conveying belt, a drying induced draft fan, a boiler, a coal economizer, a dust remover, a desulfurizing device, a boiler induced draft fan and a chimney, wherein the outlet of the wet sludge bin is connected with the feed inlet of the sludge dryer through a pipeline, the bottom of the sludge dryer is provided with a discharge port, the discharge port is connected to the coal conveying belt through a pipeline, the tail end of the coal conveying belt is connected with the boiler, the top of the coal economizer is communicated with the sludge dryer through a pipeline, the sludge dryer is respectively connected with the coal economizer and the dust remover through the drying induced draft fan, the outlet of the dust remover is connected to the desulfurizing device, the desulfurizing device is communicated with the chimney through the boiler induced draft fan, and is communicated with the outside atmosphere through the chimney.
However, the patent has the following defects in online sludge drying and blending combustion: (1) The patent directly extracts high-temperature flue gas in the front hearth of the economizer to influence the heating of the flue gas on the superheater reheater, and the high-temperature flue gas in the hearth can lead wet sludge to generate toxic and harmful substances such as dioxin in the drying process, and simultaneously reduces the flue gas quantity of the economizer and the air preheater, so that the flue gas waste heat can not be effectively utilized, and the thermal efficiency of the boiler is reduced; (2) The problems of uneven heating of wet sludge, smoke bypass and the like of introduced smoke are not explained by the sludge dryer, so that the drying degree of the wet sludge is further influenced, and the overall efficiency of a boiler is influenced; (3) The wet sludge is directly conveyed to the coal conveying belt after being dried by the sludge dryer, so that the problem of storing the sludge cannot be solved, the blending ratio of a boiler is limited, and the problem of leakage of flue gas at a discharge hole exists; (4) The wet sludge bin and the sludge dryer have no safety disconnection measures, and the phenomena of idling and the like of the dryer can be caused; (5) The drying induced draft fan is respectively connected with the coal economizer and the dust remover, and dry flue gas directly enters the dust remover to influence the performance of the dust remover and form interference with main stream flue gas; (6) The drying induced draft fan has the advantages that the connection part of the dust remover pipeline and the dust remover is subjected to larger abrasion and disturbance, so that the power consumption of the induced draft fan is increased, and the overall efficiency of the unit is reduced; (7) The coal conveying belt conveys the mixture of coal and sludge to the hearth, the condition of uneven mixing exists, the combustion condition in the hearth is affected, and the conditions of throwing and dropping of the sludge and the like can also exist.
Disclosure of Invention
The invention aims to solve the problems and provide an online sludge drying and blending system of a coal-fired power plant and application thereof, wherein the flue gas waste heat after passing through an economizer and an air preheater is utilized to dry wet sludge, so that on-site drying and blending is realized, secondary utilization of the flue gas waste heat can be effectively realized along with drying and blending, and drying and transportation costs are reduced.
The aim of the invention is achieved by the following technical scheme:
the utility model provides a coal fired power plant's online mud mummification adulteration system, includes boiler furnace, dust remover, desulfurizing tower, chimney, is used for stacking the dry storehouse of wet mud, will wet mud dry desiccation storehouse, store the dry mud wait to adulterate storehouse and will dry mud and coal mixed adulterate the conveyer, boiler furnace export is connected with the flue, dust remover and desulfurizing tower set gradually in the flue, the chimney is connected in the flue end, stack storehouse exit linkage desiccation storehouse's mud feed inlet, the entry of waiting to adulterate storehouse is connected to desiccation storehouse's mud discharge gate, wait to adulterate the conveyer of adulterate, the mixture of dry mud and coal is sent to boiler furnace and is burnt by adulterate the conveyer, desiccation storehouse's flue gas entry is connected with boiler furnace export flue through the air-bleed pipeline, the flue gas-bleed pipeline is connected with boiler furnace export flue through the air-bleed pipeline, the front end that the dust remover was all located to the air-bleed pipeline, and the front end that the air-bleed pipeline was located to the air-bleed pipeline.
Further, an induced draft fan for pumping high-temperature flue gas in the outlet flue of the boiler furnace to the drying bin is arranged in the air pumping pipeline.
Further, an elbow is arranged at the joint of the air return pipeline and the flue, and the opening direction of the elbow is the same as the flow direction of the flue gas.
Further, valves are arranged between the stacking bin and the drying bin and between the drying bin and the bin to be doped.
Further, a plurality of layers of chains for placing sludge are arranged in the drying bin, the chains are rotary transmission chains, the chains are arranged in a plurality of layers in the horizontal direction of the front wall and the rear wall of the drying bin, the rotation directions of the chains of the front wall and the rear wall are opposite, and the last-stage chains are used for conveying the dried sludge to a connecting pipeline of the drying bin and a bin to be doped.
Further, the drying bin is provided with a porous grid plate structure at the smoke inlet to enable smoke to flow uniformly.
Further, the stacking bin, the drying bin and the bin to be doped are all closed bins.
Further, valves are arranged at the joints of the air suction pipeline and the air return pipeline and the flue.
Further, an air preheater is arranged in the boiler furnace outlet flue, the air extraction flue is arranged behind the air preheater, and the flue gas temperature of the air extraction pipeline is 240-250 ℃, so that toxic substances such as dioxin and the like can not be generated by wet sludge.
The system is used for sludge treatment, and can dry and mix the sludge in the coal-fired power plant in real time.
Compared with the prior art, the invention has the following advantages:
1. the online sludge drying and mixing system for the coal-fired power plant can realize secondary utilization of underutilized flue gas, reduce the flue gas temperature of the flue gas, reduce the flue gas loss, and simultaneously dry wet sludge on site and burn at time of drying;
2. according to the invention, the stacking bin, the drying bin and the bin to be doped are respectively arranged in the system, and the valve is arranged between the stacking bin and the drying bin, so that the opening of the valve can be adjusted according to the needs, and the system realizes on-line circulating high-efficiency operation;
3. the rotary transmission chains are arranged in the drying bin, the rotation directions of the chains on the front wall and the rear wall are opposite, and the wet sludge is ensured to be repeatedly heated and dried on the chains;
4. the drying bin is provided with a porous grid plate structure for enabling the flue gas to flow uniformly at the flue gas inlet, so that the uniform diffusion of the heated flue gas is ensured;
5. the bent pipe is arranged at the joint of the air return pipeline and the flue, so that the flue gas in the air return pipeline can not damage the flow of flue gas, the disturbance is reduced, and the power consumption of the induced draft fan is reduced;
6. by arranging the air extraction flue in front of the dust remover after the air preheater, the influence on each heating surface of the flue is reduced, and the real waste gas is utilized;
7. the blending combustion conveyor mixes the coal and the sludge in advance before entering the hearth, so that the working efficiency of the hearth burner is improved, the generation of incomplete combustion is reduced, and the splashing and leakage of fuel can be effectively avoided;
8. valves arranged at the connecting pipeline of the stacking bin, the drying bin and the bin to be doped and at the air suction pipeline and the air return pipeline can effectively control the whole drying system and adjust the running condition of the system;
9. the exhaust pipeline is arranged behind the air preheater, so that the exhaust temperature can be controlled, and toxic substances are avoided under the high temperature condition.
Drawings
FIG. 1 is a schematic diagram of the on-line sludge drying and blending system of the coal-fired power plant;
FIG. 2 is a schematic diagram of the structure of a drying bin of the present invention;
FIG. 3 is a schematic view of the structure of the cellular lattice structure of the present invention;
FIG. 4 is a schematic view of the structure of the return air duct elbow of the present invention;
in the figure: 1-a boiler furnace; 2-a dust remover; 3-desulfurizing tower; 4-chimney; 5-induced draft fan; 6-drying bin; 7, stacking the bins; 8-to-be-doped bin; 9-blending and burning a conveyor; 10-valve; 11-cellular lattice plate structure; 12-a chain; 13-bending the pipe; 14-an air extraction pipeline; 15-return air pipeline.
Detailed Description
The present invention will now be described in detail with reference to the drawings and specific embodiments thereof, wherein it is apparent that the embodiments described are by way of illustration only and not of limitation. All other embodiments obtained without making any inventive effort based on the embodiments of the present invention fall within the scope of the present invention.
Examples
The invention provides an online sludge drying and blending system of a coal-fired power plant, which comprises a boiler furnace 1, a stacking bin 7, a drying bin 6, a bin 8 to be blended, an air extraction pipeline 14, an air return pipeline 15 and a chimney 4, wherein the boiler furnace 1 is connected with a flue, a dust remover 2 and a desulfurizing tower 3 are arranged in the flue, the air extraction pipeline 14 is arranged in front of the dust remover 2, the air extraction pipeline 14 is connected with an induced draft fan 5, the induced draft fan 5 is connected with the drying bin 6, a plurality of layers of chains 12 for placing sludge are arranged in the drying bin 6, the chains 12 are rotary transmission chains, the chains 12 are arranged in the horizontal direction of the front wall and the rear wall of the drying bin 6 in a plurality of layers, the rotary directions of the chains 12 of the front wall and the rear wall are opposite, the last-stage chains 12 convey dried sludge to the connecting pipeline of the drying bin 6 and the bin 8 to be blended, and the drying bin 6 is provided with a porous grid plate structure 11 for enabling the flue gas to uniformly flow at a flue gas inlet. The flue gas enters the drying bin 6 through the air extraction pipeline 14, the wet sludge on the drying chain 12 is uniformly diffused at the porous grid plate structure 11, and then the wet sludge returns to the flue through the air return pipeline 15, and in order to ensure the cleaning of the flue gas of the drying sludge, the air return pipeline 15 is arranged behind the air extraction pipeline 14 and in front of the dust remover 2.
As shown in fig. 2 and 3, after the flue gas enters the drying bin 6, the flue gas is uniformly diffused at the porous grid plate structure 11, so that the heating of wet sludge in the whole drying process is ensured, the chain 12 is a rotary transmission chain, the chain rotation directions of the front wall and the rear wall are opposite, the repeated heating and drying of the wet sludge on the chain 12 are ensured, the dried sludge enters the to-be-mixed bin 8 through the valve 10 to wait for use, the flue gas in the drying bin 6 carries water vapor and part of pollutants after the drying of the sludge and returns to the flue gas through the air return pipeline 15, and then the flue gas is purified through the dust remover 2 and the desulfurizing tower 3.
In order to ensure that the flue gas in the air return pipeline 15 cannot damage the flow of flue gas, a bent pipe 13 is specially arranged, and as shown in fig. 4, the flue gas in the drying bin 6 flows in the same direction as the main flue gas after entering the flue. In the whole system, the flue gas can only be discharged through the chimney 4 and all the flue gas needs to pass through the dust remover 2 and the desulfurizing tower 3, so that the system discharge is ensured to meet the national standard. Since the general sludge can generate highly toxic substances such as dioxin at high temperature, the exhaust pipeline 14 is positioned behind the air preheater in the flue, and the flue gas temperature at the place of millions of units is about 240 ℃, so that the wet sludge can not generate toxic substances such as dioxin.
According to the online sludge drying and blending system for the coal-fired power plant, provided by the invention, online drying treatment of wet sludge is realized through the air exhaust pipeline 14, the induced draft fan 5, the drying bin 6 and the air return pipeline 15, dried sludge is sent to the to-be-blended bin 8 through the valve 10, and on-site drying and storage of blended sludge are realized, so that the sludge drying and off-site transportation cost is saved, meanwhile, the flue gas after the air preheater does not have waste heat utilization equipment, the flue gas waste heat is utilized, the secondary utilization of the flue gas can be realized by adopting the online sludge drying system, the flue gas temperature is reduced, the heat loss of discharged flue gas is reduced, and the boiler efficiency is improved.
The foregoing description is only illustrative of the preferred embodiments of the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present invention.
Claims (2)
1. The utility model provides a coal fired power plant's online sludge drying adulteration system, its characterized in that includes boiler furnace (1), dust remover (2), desulfurizing tower (3), chimney (4), be used for piling up wet mud stack storehouse (7), with wet mud dry desiccation storehouse (6), store dry mud wait adulteration conveyer (9) of mixing dry mud and coal, boiler furnace (1) export and flue connection, dust remover (2) and desulfurizing tower (3) set gradually in the flue, chimney (4) are connected in the flue end, stack storehouse (7) exit linkage desiccation storehouse (6) mud feed inlet, the mud discharge gate of desiccation storehouse (6) is connected and is waiting to adulterate the entry of storehouse (8), wait to adulterate the export of storehouse (8) and mix burning conveyer (9), mix the burning conveyer (9) with dry mud and coal and mix to boiler furnace (1) burning, the flue gas entry of desiccation storehouse (6) is through bleed duct (14) and boiler furnace (1) export connection, the return air duct (15) and the return air duct (15) of desiccation storehouse (6) are located in the flue end of returning (15) and are connected with flue duct (15), the air exhaust pipeline (14) is arranged at the front end of the air return pipeline (15);
an induced draft fan (5) for pumping high-temperature flue gas in an outlet flue of the boiler furnace (1) to the drying bin (6) is arranged in the air pumping pipeline (14);
an elbow (13) is arranged at the joint of the air return pipeline (15) and the flue, and the opening direction of the elbow (13) is the same as the flow direction of the flue gas;
valves (10) are arranged between the stacking bin (7) and the drying bin (6) and between the drying bin (6) and the bin (8) to be doped;
a plurality of layers of chains (12) for placing sludge are arranged in the drying bin (6), the chains (12) are rotary transmission chains, the chains (12) are arranged in a plurality of layers in the horizontal direction of the front wall and the rear wall of the drying bin (6), the rotation directions of the chains (12) of the front wall and the rear wall are opposite, and the last-stage chains (12) are used for conveying the dried sludge to a connecting pipeline of the drying bin (6) and a bin (8) to be doped;
the drying bin (6) is provided with a porous grid plate structure (11) at a smoke inlet for enabling smoke to flow uniformly;
the stacking bin (7), the drying bin (6) and the bin to be doped (8) are all closed bins;
valves are arranged at the joints of the air suction pipeline (14) and the air return pipeline (15) and the flue;
an air preheater is arranged in an outlet flue of the boiler furnace (1), and the flue gas temperature of the air exhaust pipeline (14) is 240-250 ℃.
2. The use of an on-line sludge drying and co-firing system for a coal-fired power plant according to claim 1, wherein the system is used for sludge treatment to dry and co-fire sludge in real time in the coal-fired power plant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810596960.7A CN108800162B (en) | 2018-06-11 | 2018-06-11 | Online sludge drying and blending combustion system of coal-fired power plant and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810596960.7A CN108800162B (en) | 2018-06-11 | 2018-06-11 | Online sludge drying and blending combustion system of coal-fired power plant and application thereof |
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| Publication Number | Publication Date |
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| CN108800162A CN108800162A (en) | 2018-11-13 |
| CN108800162B true CN108800162B (en) | 2024-01-23 |
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| CN110590115A (en) * | 2019-10-12 | 2019-12-20 | 宜清环境技术有限公司 | Sludge blending combustion system of thermal power plant |
| CN111256154A (en) * | 2020-03-23 | 2020-06-09 | 西安热工研究院有限公司 | Coal-fired power plant coupled sludge blending device and blending method |
| CN111408230A (en) * | 2020-04-22 | 2020-07-14 | 华能国际电力股份有限公司 | Wastewater recoverable integrated treatment system and method suitable for coal-fired power plant |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110012918A (en) * | 2009-07-31 | 2011-02-09 | 한국염색기술연구소 | Fuelization apparatus and method of dyeing wastewater sludge for coal-fired power plant boiler facility |
| CN105502877A (en) * | 2015-11-30 | 2016-04-20 | 林斌炎 | Integrated treatment system for coal-fired flue gas and sludge |
| CN207313417U (en) * | 2017-10-16 | 2018-05-04 | 山东金孚环境工程有限公司 | A kind of online sludge drying co-combustion system of station boiler |
| CN208504404U (en) * | 2018-06-11 | 2019-02-15 | 上海电力学院 | A kind of online sludge drying co-combustion system in coal-burning power plant |
-
2018
- 2018-06-11 CN CN201810596960.7A patent/CN108800162B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110012918A (en) * | 2009-07-31 | 2011-02-09 | 한국염색기술연구소 | Fuelization apparatus and method of dyeing wastewater sludge for coal-fired power plant boiler facility |
| CN105502877A (en) * | 2015-11-30 | 2016-04-20 | 林斌炎 | Integrated treatment system for coal-fired flue gas and sludge |
| CN207313417U (en) * | 2017-10-16 | 2018-05-04 | 山东金孚环境工程有限公司 | A kind of online sludge drying co-combustion system of station boiler |
| CN208504404U (en) * | 2018-06-11 | 2019-02-15 | 上海电力学院 | A kind of online sludge drying co-combustion system in coal-burning power plant |
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