CN113371963A - Small drying incineration sludge treatment device and sludge treatment method thereof - Google Patents
Small drying incineration sludge treatment device and sludge treatment method thereof Download PDFInfo
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- CN113371963A CN113371963A CN202110633014.7A CN202110633014A CN113371963A CN 113371963 A CN113371963 A CN 113371963A CN 202110633014 A CN202110633014 A CN 202110633014A CN 113371963 A CN113371963 A CN 113371963A
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- 239000010802 sludge Substances 0.000 title claims abstract description 157
- 238000001035 drying Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000002485 combustion reaction Methods 0.000 claims abstract description 31
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000003546 flue gas Substances 0.000 claims abstract description 29
- 239000000779 smoke Substances 0.000 claims abstract description 22
- 239000002028 Biomass Substances 0.000 claims abstract description 19
- 239000007789 gas Substances 0.000 claims abstract description 10
- 239000000428 dust Substances 0.000 claims abstract description 9
- 239000002893 slag Substances 0.000 claims description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 239000012620 biological material Substances 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 claims description 3
- 238000007254 oxidation reaction Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 230000018044 dehydration Effects 0.000 abstract description 7
- 238000006297 dehydration reaction Methods 0.000 abstract description 7
- 238000012546 transfer Methods 0.000 abstract description 5
- 239000010865 sewage Substances 0.000 description 12
- 239000000446 fuel Substances 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 5
- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 239000002154 agricultural waste Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000010903 husk Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 239000010902 straw Substances 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002361 compost Substances 0.000 description 1
- 238000009264 composting Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/40—Solid fuels essentially based on materials of non-mineral origin
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/40—Solid fuels essentially based on materials of non-mineral origin
- C10L5/46—Solid fuels essentially based on materials of non-mineral origin on sewage, house, or town refuse
-
- 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
- F23G5/14—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion
- F23G5/16—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion in a separate combustion chamber
-
- 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
- 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
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J1/00—Removing ash, clinker, or slag from combustion chambers
- F23J1/06—Mechanically-operated devices, e.g. clinker pushers
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/10—Energy recovery
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/08—Drying or removing water
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/24—Mixing, stirring of fuel components
-
- 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
- F23G2202/00—Combustion
- F23G2202/10—Combustion in two or more stages
- F23G2202/103—Combustion in two or more stages in separate chambers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2203/00—Furnace arrangements
- F23G2203/105—Furnace arrangements with endless chain or travelling grate
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- 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
- F23G2209/00—Specific waste
- F23G2209/12—Sludge, slurries or mixtures of liquids
-
- 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
- F23J2217/40—Intercepting solids by cyclones
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2700/00—Ash removal, handling and treatment means; Ash and slag handling in pulverulent fuel furnaces; Ash removal means for incinerators
- F23J2700/003—Ash removal means for incinerators
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- 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
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
-
- 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
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a miniaturized drying incineration sludge treatment device, which comprises: the wet sludge bin, the sludge dryer, the dried sludge bin, the incinerator, the biomass bin and the air blower, wherein the discharge end of the dried sludge bin is communicated with the feed end of the incinerator, the discharge end of the biomass bin is communicated with the feed end of the incinerator, the smoke exhaust pipe of the incinerator is communicated with the inner cavity of the sludge dryer, the air outlet end of the air blower is communicated with the inner cavity of the incinerator, and combustion-supporting gas can be conveyed to the inner cavity of the incinerator. A sludge treatment method of the miniaturized drying incineration sludge treatment device. Burn burning furnace, two combustion chambers two-stage structure, burn burning furnace in unburnt complete gas, continue burning after getting into two combustion chambers, the flue gas in two combustion chambers is direct emission not, the heat transfer mode of direct contact, the heat of make full use of flue gas, and part smoke and dust can the adhesion on dehydration mud in the flue gas simultaneously to the smoke and dust volume in the flue gas has been reduced.
Description
Technical Field
The invention relates to the technical field of urban sludge treatment, in particular to a miniaturized drying incineration sludge treatment device and a sludge treatment method thereof.
Background
With the perfect construction of municipal sewage treatment plants and the implementation of ten water treatment plants, the sludge market is becoming mature day by day. The sewage treatment market sinks towards the markets of villages and towns, sludge treatment of sewage treatment plants in small towns (mainly counties and towns) is a trend of future market development, sludge treatment processes and complete equipment suitable for the small towns are developed in advance, pilot and demonstration projects are actively carried out, the market opportunity is favorably preempted, and the brand is established to realize a leading strategy.
The method is different from the method that the yield of the municipal sludge above the grade of the prefecture is large and the financial power is strong; the sludge scale of the small-sized towns is small, the sludge amount is generally 5-20 t/h, the operation managers are deficient, the financial repayment capability is weak, and the method has the characteristics of a large amount of resources and absorption ways of agriculture, forestry and the like; the traditional sludge treatment process is combined and innovated, and a sludge treatment process suitable for the characteristics of sludge in small towns is developed.
Disclosure of Invention
The invention aims to overcome the technical defects and provide a small drying incineration sludge treatment device and a sludge treatment method thereof, which are suitable for sludge treatment of small towns.
In order to achieve the technical purpose, the technical scheme of the invention provides a miniaturized drying incineration sludge treatment device, which comprises: the wet sludge bin, the sludge dryer, the dried sludge bin, the incinerator, the biomass bin and the air blower, wherein the discharge end of the wet sludge bin is communicated with the feed end of the sludge dryer, the discharge end of the sludge dryer is communicated with the feed end of the dried sludge bin, the discharge end of the dried sludge bin is communicated with the feed end of the incinerator, the discharge end of the biomass bin is communicated with the feed end of the incinerator, the smoke exhaust pipe of the incinerator is communicated with the inner cavity of the sludge dryer, the air outlet end of the air blower is communicated with the inner cavity of the incinerator, and combustion-supporting gas can be conveyed to the inner cavity of the incinerator.
Further, the incinerator comprises an incinerator hearth and a second combustion chamber, and the incinerator hearth is communicated with the second combustion chamber through a flue.
Furthermore, the miniaturized sludge drying and incineration treatment device further comprises a mixing bin, the discharge ends of the sludge drying machine and the biomass bin are communicated with the feed end of the mixing bin, and the discharge end of the mixing bin is communicated with the feed end of the incinerator.
Furthermore, one end of the smoke exhaust pipe is communicated with the inner cavity of the secondary combustion chamber, and the other end of the smoke exhaust pipe is communicated with the inner cavity of the sludge dryer.
Furthermore, a fire grate is arranged in the incinerator furnace chamber, a first slag discharge groove is arranged at the bottom of the incinerator furnace chamber, and a second slag discharge groove is arranged at the bottom of the secondary combustion chamber.
Furthermore, the grate is a stepped reciprocating grate, a first screw conveyer which is horizontally arranged is arranged at the lowest part of the stepped reciprocating grate, the axial direction of a screw rod with a helical blade of the first screw conveyer is vertical to the movement direction of the stepped reciprocating grate, the discharge end of the first screw conveyer is communicated with the first slag discharge groove, and a temporary slag storage chamber is arranged at the lower end of the first slag discharge groove.
Further, miniaturized mummification burns sludge treatment equipment still include second screw conveyer, second screw conveyer's feed end with interim storage slag chamber intercommunication.
Furthermore, a first igniter is arranged in the hearth of the incinerator, and a second igniter is arranged in the second combustion chamber.
The invention also provides a sludge treatment method of the miniaturized drying incineration sludge treatment device, which comprises the following steps:
step 4, conveying the dried sludge in the dried sludge bin to the incinerator, conveying the biological material in the biomass bin to the incinerator, mixing the dried sludge and the biological material at the feed end of the incinerator, and then conveying the mixture into the incinerator;
and 6, firstly sending the flue gas with low dust content separated by the cyclone separator into an alkaline washing tower to remove acid gas, then sending the flue gas into an oxidation tower to be completely oxidized, and finally sending the flue gas into a chimney to be discharged into the atmosphere.
Compared with the prior art, the invention has the beneficial effects that:
1. the fuel source is wide, and the fuel adopts the common biomass fuel in rural areas according to local conditions, so that the problem of the fuel source of the system is solved, and a treatment way is provided for agricultural waste such as straws, rice husks and barks in rural areas;
2. the system integration level is high, all the equipment is in 2-3 containers, the containers are transported to the site after being installed by a manufacturer, and the installation can be completed in 3-5 days;
3. burn burning furnace, two combustion chamber two-stage structure, burn burning furnace in not burning complete gas, continue burning after getting into two combustion chambers, the flue gas in two combustion chambers is not direct discharge, flue gas in two combustion chambers gets into sludge drying machine's inner chamber, with the dehydration mud direct contact heat transfer in the sludge drying machine, make the dehydration mud of moisture content 60% dried, and form the moisture content and fall to the mummification mud below 30%, this kind of direct contact's heat transfer mode, make full use of the heat of flue gas, simultaneously partial smoke and dust can the adhesion on dehydration mud in the flue gas, thereby the smoke and dust volume in the flue gas has been reduced.
4. The structure enables the stepped reciprocating grate to directly push slag to the first spiral conveyor, and the movement directions of the first spiral conveyor and the stepped reciprocating grate are vertical, so that shearing force to the slag is formed, and blockage in the slag discharging process is avoided.
Drawings
FIG. 1 is a schematic structural diagram of one embodiment of a miniaturized drying and incinerating sludge treatment device provided by the invention;
FIG. 2 is a schematic top view showing a partial structure of a miniaturized sludge drying and incinerating apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 and fig. 2, the present embodiment provides a miniaturized drying and incinerating sludge treatment device, including: wet sludge bin 1, sludge dryer 2, dried sludge bin 3, incinerator, biomass bin 4 and blower.
The discharge end of the wet sludge bin 1 is communicated with the feed end of the sludge dryer 2, the discharge end of the sludge dryer 2 is communicated with the feed end of the dried sludge bin 3, the discharge end of the dried sludge bin 3 is communicated with the feed end of the incinerator, the discharge end of the biomass bin 4 is communicated with the feed end of the incinerator, the smoke exhaust pipe 5 of the incinerator is communicated with the inner cavity of the sludge dryer 2, the air outlet end of the air blower is communicated with the inner cavity of the incinerator, and combustion-supporting gas (air) can be conveyed to the inner cavity of the incinerator.
In this embodiment, the incinerator includes an incinerator furnace 6 and a second combustion chamber 7, and the incinerator furnace 6 is communicated with the second combustion chamber 7 through a flue 8.
The miniaturized sludge drying and incinerating treatment device further comprises a mixing bin 9, the discharge ends of the sludge dryer 2 and the biomass bin 4 are communicated with the feed end of the mixing bin 9, and the discharge end of the mixing bin 9 is communicated with the feed end of the incinerator.
One end of the smoke exhaust pipe 5 is communicated with the inner cavity of the secondary combustion chamber 7, the other end of the smoke exhaust pipe 5 is communicated with the inner cavity of the sludge dryer 2, and the smoke exhaust pipe 5 is used for guiding smoke in the secondary combustion chamber 7 to enter the sludge dryer 2.
The incinerator furnace 6 is internally provided with a fire grate 11, the bottom of the incinerator furnace 6 is provided with a first slag discharge groove 6a, the bottom of the secondary combustion chamber 7 is provided with a second slag discharge groove 7a, the fire grate is a stepped reciprocating fire grate, a first spiral conveyer 10 which is horizontally arranged is arranged at the lowest part of the stepped reciprocating fire grate, the axial direction of a screw rod with a spiral blade of the first spiral conveyer 10 is vertical to the movement direction of the stepped reciprocating fire grate, the discharge end of the first spiral conveyer 10 is communicated with the first slag discharge groove 6a, and the lower end of the first slag discharge groove 6a is provided with a temporary slag storage chamber 12.
Miniaturized mummification burns sludge treatment equipment still include second screw conveyer 13, second screw conveyer 13 the feed end with interim storage slag chamber 12 intercommunication, be provided with first some firearm in the incinerator furnace 6, be provided with second some firearm in the second combustion chamber 7.
Furthermore, an emergency smoke pipe 13 is arranged on the second combustion chamber 7, and when the smoke exhaust pipe 5 is blocked, the emergency smoke pipe 13 can be used for temporarily exhausting smoke.
The implementation also provides a sludge treatment method of the miniaturized drying incineration sludge treatment device, which comprises the following steps:
step 4, conveying the dried sludge in the dried sludge bin to the incinerator, conveying the biological material in the biomass bin to the incinerator, mixing the dried sludge and the biological material at the feed end of the incinerator, and then conveying the mixture into the incinerator;
and 6, firstly sending the flue gas with low dust content separated by the cyclone separator into an alkaline washing tower to remove acid gas, then sending the flue gas into an oxidation tower to be completely oxidized, and finally sending the flue gas into a chimney to be discharged into the atmosphere.
The technical scheme has the following advantages:
1. the fuel source is wide, and the fuel adopts the common biomass fuel in rural areas according to local conditions, so that the problem of the fuel source of the system is solved, and a treatment way is provided for agricultural waste such as straws, rice husks and barks in rural areas;
2. the system integration level is high, all the equipment is in 2-3 containers, the containers are transported to the site after being installed by a manufacturer, and the installation can be completed in 3-5 days;
3. burn burning furnace, two combustion chamber two-stage structure, burn burning furnace in not burning complete gas, continue burning after getting into two combustion chambers, the flue gas in two combustion chambers is not direct discharge, flue gas in two combustion chambers gets into sludge drying machine's inner chamber, with the dehydration mud direct contact heat transfer in the sludge drying machine, make the dehydration mud of moisture content 60% dried, and form the moisture content and fall to the mummification mud below 30%, this kind of direct contact's heat transfer mode, make full use of the heat of flue gas, simultaneously partial smoke and dust can the adhesion on dehydration mud in the flue gas, thereby the smoke and dust volume in the flue gas has been reduced.
4. The structure enables the stepped reciprocating grate to directly push slag to the first spiral conveyor, and the movement directions of the first spiral conveyor and the stepped reciprocating grate are vertical, so that shearing force to the slag is formed, and blockage in the slag discharging process is avoided.
In actual use:
1. in a sewage treatment plant in a small grade city in a middle part, the sewage treatment capacity is 6 ten thousand M3/day, the sludge production is about 25 to 30 tons/day, the common treatment capacity of the conventional sludge treatment plant is 50 tons/day or more, and the total manufacturing cost is usually more than 3000 ten thousand; and because the actual throughput is lower than the design throughput for a long time, the running cost is very high; if the complete equipment of 30 tons/day in the small drying incineration sludge treatment device provided by the embodiment is adopted, the manufacturing cost is far lower than that of conventional plant equipment, the occupied area is small, the operation is simple, and the operation cost is low;
2. in a sewage treatment plant in a county-level city in a middle part, the sewage treatment capacity is 4 ten thousand M3/day, the sludge production is about 20 tons/day, the treatment capacity is completely impossible by using a set of conventional sludge drying and incinerating equipment, the land occupation is large by adopting methods such as composting and the like, and the environment is polluted; if 20 tons/day of complete equipment in the small drying incineration sludge treatment device provided by the embodiment is adopted, the requirements are perfectly met;
3. in a developed village and town sewage treatment plant in the east, the sewage treatment capacity is 2 ten thousand M3 per day, the sludge production is about 10 tons per day, the common treatment method is sanitary landfill and compost treatment at present, but the country requires to consolidate and make good the rural human settlements and tamp the basis of the rural joyful environment. Therefore, the original sludge treatment method does not meet the national requirements, a new sludge treatment method is required, and if a complete set of equipment of 10 tons/day in the miniaturized sludge drying and incinerating treatment device provided by the embodiment is adopted, the requirement of the nation for making the rural human living environment well is perfectly met.
4. A plurality of town sewage treatment plants are arranged in a certain area, the sludge amount is only a few tons every day, the equipment can be placed on a truck for mobile treatment, and the equipment can be arranged to the corresponding sewage treatment plant for treatment according to which sewage treatment plant needs to treat the sludge.
The above-described embodiments of the present invention should not be construed as limiting the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.
Claims (9)
1. The utility model provides a miniaturized mummification burns sludge treatment device which characterized in that includes: the wet sludge bin, the sludge dryer, the dried sludge bin, the incinerator, the biomass bin and the air blower, wherein the discharge end of the wet sludge bin is communicated with the feed end of the sludge dryer, the discharge end of the sludge dryer is communicated with the feed end of the dried sludge bin, the discharge end of the dried sludge bin is communicated with the feed end of the incinerator, the discharge end of the biomass bin is communicated with the feed end of the incinerator, the smoke exhaust pipe of the incinerator is communicated with the inner cavity of the sludge dryer, the air outlet end of the air blower is communicated with the inner cavity of the incinerator, and combustion-supporting gas can be conveyed to the inner cavity of the incinerator.
2. The device for treating sludge through miniaturized drying and incineration of claim 1, wherein the incinerator comprises an incinerator hearth and a secondary combustion chamber, and the incinerator hearth is communicated with the secondary combustion chamber through a flue.
3. The device for treating sludge through drying and incineration as claimed in claim 2, wherein the device for treating sludge through drying and incineration further comprises a mixing bin, the discharge ends of the sludge dryer and the biomass bin are communicated with the feed end of the mixing bin, and the discharge end of the mixing bin is communicated with the feed end of the incinerator.
4. The device for treating sludge through miniaturized drying and incineration of claim 3, wherein one end of the smoke exhaust pipe is communicated with the inner cavity of the secondary combustion chamber, and the other end of the smoke exhaust pipe is communicated with the inner cavity of the sludge dryer.
5. The device for treating sludge through miniaturized drying and incineration of claim 2, wherein a fire grate is arranged in the incinerator hearth, a first slag discharge groove is arranged at the bottom of the incinerator hearth, and a second slag discharge groove is arranged at the bottom of the secondary combustion chamber.
6. The miniaturized drying incineration sludge treatment device according to claim 5, wherein the grate is a stepped reciprocating grate, a first screw conveyor which is horizontally arranged is arranged at the lowest part of the stepped reciprocating grate, the axial direction of a screw rod with a screw blade of the first screw conveyor is vertical to the movement direction of the stepped reciprocating grate, the discharge end of the first screw conveyor is communicated with the first slag discharge groove, and a temporary slag storage chamber is arranged at the lower end of the first slag discharge groove.
7. The miniaturized drying incineration sludge treatment device according to claim 6, further comprising a second screw conveyor, wherein a feeding end of the second screw conveyor is communicated with the temporary slag storage chamber.
8. The device for treating sludge through miniaturized drying and incineration of claim 2, wherein a first igniter is arranged in the hearth of the incinerator, and a second igniter is arranged in the second combustion chamber.
9. The sludge treatment method of the miniaturized drying incineration sludge treatment device according to any one of claims 1 to 8, comprising the following steps:
step 1, dewatering dewatered sludge with the water content of 80% to reduce the water content to 60%, and storing the dewatered sludge in the wet sludge bin;
step 2, conveying the dewatered sludge with the water content of 60% in the wet sludge bin to the sludge dryer, contacting the dewatered sludge with the water content of 60% with hot flue gas conveyed from the incinerator in the sludge dryer, drying the dewatered sludge with the water content of 60%, and forming dried sludge with the water content of below 30%;
step 3, separating hot flue gas after heat exchange with dehydrated sludge in the sludge dryer through a cyclone separator, and conveying separated ash and dried sludge in the sludge dryer to the dried sludge bin;
step 4, conveying the dried sludge in the dried sludge bin to the incinerator, conveying the biological material in the biomass bin to the incinerator, mixing the dried sludge and the biological material at the feed end of the incinerator, and then conveying the mixture into the incinerator;
step 5, the air blower sends air into the incinerator to assist combustion of the biomass and the dried sludge, and the burnt ash is cooled by a slag cooler and then stored or sent out;
and 6, firstly sending the flue gas with low dust content separated by the cyclone separator into an alkaline washing tower to remove acid gas, then sending the flue gas into an oxidation tower to be completely oxidized, and finally sending the flue gas into a chimney to be discharged into the atmosphere.
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