CN109574451A - A kind of method of sludge drying comprehensive utilization - Google Patents

A kind of method of sludge drying comprehensive utilization Download PDF

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Publication number
CN109574451A
CN109574451A CN201811459093.9A CN201811459093A CN109574451A CN 109574451 A CN109574451 A CN 109574451A CN 201811459093 A CN201811459093 A CN 201811459093A CN 109574451 A CN109574451 A CN 109574451A
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CN
China
Prior art keywords
sludge
rotary kiln
stockyard
desiccation
comprehensive utilization
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201811459093.9A
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Chinese (zh)
Inventor
孙亮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Foshan Feng Hui Environmental Protection Engineering Co Ltd
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Foshan Feng Hui Environmental Protection Engineering Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Foshan Feng Hui Environmental Protection Engineering Co Ltd filed Critical Foshan Feng Hui Environmental Protection Engineering Co Ltd
Priority to CN201811459093.9A priority Critical patent/CN109574451A/en
Publication of CN109574451A publication Critical patent/CN109574451A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/38—Removing components of undefined structure
    • B01D53/40—Acidic components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/54—Nitrogen compounds
    • B01D53/58—Ammonia
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/75—Multi-step processes
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B33/00—Clay-wares
    • C04B33/02—Preparing or treating the raw materials individually or as batches
    • C04B33/13—Compounding ingredients
    • C04B33/132—Waste materials; Refuse; Residues
    • C04B33/1321—Waste slurries, e.g. harbour sludge, industrial muds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/30—Alkali metal compounds
    • B01D2251/304—Alkali metal compounds of sodium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/60—Inorganic bases or salts
    • B01D2251/604—Hydroxides
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • General Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biomedical Technology (AREA)
  • Health & Medical Sciences (AREA)
  • Organic Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Treatment Of Sludge (AREA)

Abstract

The invention discloses a kind of method of sludge drying comprehensive utilization, its steps is as follows: 1) being inputted sludge in rotary kiln by charging car, feeder, belt conveyor and screw conveyor；2) foul gas in sludge stockyard is pumped into hot-blast stove by blower negative pressure and is used as combustion air, and material is uniformly distributed in rotary kiln and disperses and come into full contact with hot wind；3) material movement is transported to the storage of desiccation mud stockyard as brick-making raw material in case brickmaking process uses to another section of discharge finished product of rotary kiln；4) adobe for mixing sludge enters tunnel oven after drying and is burnt into；5) dust caused by rotary kiln and tunnel oven transports desiccation mud stockyard after being collected by deduster and recycles；6) foul gas in the foul gas and desiccation mud field after dedusting is pumped into chemical washing device using air-introduced machine；7) foul gas leads to Plasma deodorizer progress deep purifying after chemical washing device, is then discharged by chimney.

Description

A kind of method of sludge drying comprehensive utilization
Technical field
The present invention relates to a kind of methods of sludge drying comprehensive utilization.
Background technique
The country increases successively with sewage treatment plant, and the national total yield of year sludge has broken through 35,000,000 tons.According to incomplete Statistics, disposal options burning in the whole nation accounts for 6% at present；Compost accounts for 8%；Remaining 86% progress " landfill ".Sewage treatment is about to terminate, Specific resistance to filtration ability ground zero leads to sludge " overstocked ", becomes one of significant problem of environmental area.As aerobic fermentation plus The technology path of land use (based on agricultural), which carries out processing sludge, can have additional nutrients the internal circulating load of matter, but noenergy is returned It receives, the technology path as anaerobic digestion plus land use (based on agricultural), which carries out processing sludge, can directly reduce carbon emission, But technical difficulty is big, invests also larger.
Summary of the invention
The purpose of the present invention is overcome the deficiencies of the prior art and provide a kind of method of sludge drying comprehensive utilization.
Using fume afterheat parallel sludge at low temperature drying method the step of it is as follows:
1) the sealed tank car of sludge transports it into the sludge stockyard of sludge treatment plant, passes through charging car, feeder, belt Conveyer and screw conveyor input sludge in rotary kiln.
2) foul gas in sludge stockyard is pumped into hot-blast stove by the blower negative pressure of hot-blast stove and is used as combustion air, The hot wind that hot-blast stove generates is sent into rotary kiln end, and wet material is after rotary kiln end investment, in the uniformly distributed shovelling plate of inner cylinder It stirs down, material is uniformly distributed and disperses in rotary kiln, and abundant with the hot wind that temperature is 650~850 DEG C is entered from kiln hood Contact, makes moisture fast transferring become vapor and vapor is discharged by wet-emitting blower again.
3) material moves to another section of discharge finished product of rotary kiln under the action of with gradient cylinder and shovelling plate, The storage of desiccation mud stockyard is transported to as brick-making raw material in case brickmaking process uses.
4) desiccation mud, which is transported from desiccation mud stockyard to brick field, makees brick-making raw material, and the adobe for mixing sludge enters after drying Tunnel oven is burnt into, volatile matter and organic matter whole decomposition combustion in sludge.
5) dust caused by rotary kiln and tunnel oven transports desiccation mud stockyard after being collected by deduster and recycles.
6) foul gas in the foul gas and desiccation mud field after dedusting chemical washing is pumped into using air-introduced machine to fill It sets, after after chemical reaction, the sediment in sedimentation basin is transported to desiccation mud stockyard, the flowing back into of chemical liquid in sedimentation basin Wash mill is learned to utilize again.
7) foul gas leads to Plasma deodorizer progress deep purifying after chemical washing device, is then arranged by chimney Out.
As a kind of preferred embodiment of the invention, the tunnel oven that the tunnel oven is 1050 DEG C of furnace temperature, the tunnel Road kiln kiln tail passes through after waste-heat recovery device recovery waste heat to rotary kiln heat supply.
As a kind of preferred embodiment of the invention, the deduster of the step 5) includes cyclone dust collectors, cloth bag Deduster and wet cottrell, the cyclone dust collectors and bag filter dedusting are connected to rotary kiln, and the wet type is quiet Electric precipitator is connected to tunnel oven.
As a kind of preferred embodiment of the invention, the chemical washing device includes alkali electroless wash mill With acidic chemical wash mill, the alkali electroless wash mill uses the sour gas in Na2OH base extraction foul smell, described Acidic chemical wash mill uses the ammonia nitrogen gas in 5% sulfuric acid solution foul smell.
As a kind of preferred embodiment of the invention, the Plasma deodorizer is DDBD plasma deodorization dress It sets.
As a kind of preferred embodiment of the invention, the dewatered sludge accounts for the 15% of common brick raw material.
The beneficial effects of the present invention are:
The present invention provides a kind of method of sludge drying comprehensive utilization, by first drying, then using dewatered sludge as building The part material admixture of material production, technically fairly simple, investment is relatively fewer, and the construction period is also short, and processing is compared Thoroughly, " sludge reduction, innoxious and recycling " three changes processing has been reached, has both solved sludge handling problem in this way, in sludge Energy substance be fully used, reduce the production cost of wall body brick.
Detailed description of the invention
Attached drawing 1 is the total step schematic diagram of a kind of method of sludge drying comprehensive utilization.
Specific embodiment
Below in conjunction with the embodiment of the present invention and attached drawing, technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
Embodiment
Attached drawing is please referred to, is a kind of step schematic diagram of the method for sludge drying comprehensive utilization of the invention.
A kind of method of sludge drying comprehensive utilization of the invention, includes the following steps:
1) the sealed tank car of sludge that moisture content is 80~85% transports it into the sludge stockyard of sludge treatment plant, passes through Charging car, feeder, belt conveyor and screw conveyor input sludge in rotary kiln.
2) foul gas in sludge stockyard is pumped into hot-blast stove by the blower negative pressure of hot-blast stove and is used as combustion air, The hot wind that hot-blast stove generates is sent into rotary kiln end, and wet material is after rotary kiln end investment, in the uniformly distributed shovelling plate of inner cylinder It stirs down, material is uniformly distributed and disperses in rotary kiln, and abundant with the hot wind that temperature is 650~850 DEG C is entered from kiln hood Contact, makes moisture fast transferring become vapor and is again arranged vapor by wet-emitting blower, to reach dry requirement, sludge is dry Moisture content is 25~30% after change.
3) material moves to another section of discharge finished product of rotary kiln under the action of with gradient cylinder and shovelling plate, The storage of desiccation mud stockyard is transported to as brick-making raw material in case brickmaking process uses.
4) desiccation mud, which is transported from desiccation mud stockyard to brick field, makees brick-making raw material, and the adobe for mixing sludge enters after drying Tunnel oven is burnt into, volatile matter and organic matter whole decomposition combustion in sludge, due in the sludge of desiccation contain 2000~ The heat (being equivalent to 0.286~0.35kg standard coal) of 2500kcal/kg, the coal dust amount admixed in adobe also accordingly reduce, wall The cost of body brick also accordingly declines.
5) dust caused by rotary kiln and tunnel oven transports desiccation mud stockyard after being collected by deduster and recycles, and has There is higher utilization rate.
6) foul gas in the foul gas and desiccation mud field after dedusting chemical washing is pumped into using air-introduced machine to fill It sets, after after chemical reaction, the sediment in sedimentation basin is transported to desiccation mud stockyard, the flowing back into of chemical liquid in sedimentation basin Wash mill is learned to utilize again, it is more environmentally-friendly.
7) foul gas leads to Plasma deodorizer progress deep purifying after chemical washing device, removes odors, reaches It is discharged after to discharge standard from chimney.
The tunnel oven that tunnel oven is 1050 DEG C of furnace temperature, tunnel oven kiln tail pass through Xiang Huizhuan after waste-heat recovery device recovery waste heat Kiln heat supply.Deduster includes cyclone dust collectors, bag filter and wet cottrell, cyclone dust collectors and bag filter Dedusting is connected to rotary kiln, and wet cottrell is connected to tunnel oven.
Chemical washing device includes alkali electroless wash mill and acidic chemical wash mill, and alkali electroless wash mill makes With the sour gas in Na2OH base extraction foul smell, acidic chemical wash mill uses the ammonia in 5% sulfuric acid solution foul smell Nitrogen, alkaline detergent solution flows through alkalies sedimentation basin precipitating after washing acid foul smell, after acidic cleaning liquid washs alkaline foul smell Acidic Liquid sedimentation basin precipitating is flowed through, the water after precipitating flows separately through respective pond of making up a prescription for alkaline washing and acidic cleaning with liquid With not outlet is recycled in water system, more environmentally-friendly.Plasma deodorizer is DDBD Plasma deodorizer.Dewatered sludge Account for the 15% of common brick raw material.
Finally, it should be noted that being not intended to restrict the invention the foregoing is merely preferred embodiment of the invention, to the greatest extent Present invention has been described in detail with reference to the aforementioned embodiments for pipe, for those skilled in the art, still can be with It modifies the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features.It is all Within the spirit and principles in the present invention, any modification, equivalent replacement, improvement and so on should be included in guarantor of the invention Within the scope of shield.

Claims (6)

1. a kind of method of sludge drying comprehensive utilization, it is characterised in that its steps is as follows:
1) the sealed tank car of sludge transports it into the sludge stockyard of sludge treatment plant, passes through charging car, feeder, Belt Conveying Machine and screw conveyor input sludge in rotary kiln.
2) foul gas in sludge stockyard is pumped into hot-blast stove by the blower negative pressure of hot-blast stove and is used as combustion air, hot wind The hot wind that furnace generates is sent into rotary kiln end, and wet material is after rotary kiln end investment, in stirring for the uniformly distributed shovelling plate of inner cylinder Under, material is uniformly distributed and disperses in rotary kiln, and comes into full contact with the hot wind that temperature is 650~850 DEG C is entered from kiln hood, Make moisture fast transferring become vapor vapor is discharged by wet-emitting blower again.
3) material moves to another section of discharge finished product of rotary kiln, conduct under the action of with gradient cylinder and shovelling plate Brick-making raw material is transported to the storage of desiccation mud stockyard in case brickmaking process uses.
4) desiccation mud, which is transported from desiccation mud stockyard to brick field, makees brick-making raw material, and the adobe for mixing sludge enters tunnel after drying Kiln is burnt into, volatile matter and organic matter whole decomposition combustion in sludge.
5) dust caused by rotary kiln and tunnel oven transports desiccation mud stockyard after being collected by deduster and recycles.
6) foul gas in the foul gas and desiccation mud field after dedusting is pumped into chemical washing device using air-introduced machine, passed through After crossing chemical reaction, the sediment in sedimentation basin is transported to desiccation mud stockyard, and the chemical liquid in sedimentation basin flows back into chemistry and washes Device is washed to utilize again.
7) foul gas leads to Plasma deodorizer progress deep purifying after chemical washing device, is then discharged by chimney.
2. a kind of method of municipal sludge desiccation comprehensive utilization according to claim 1, it is characterised in that: the tunnel oven For 1050 DEG C of tunnel oven of furnace temperature, the tunnel oven kiln tail passes through after waste-heat recovery device recovery waste heat to rotary kiln heat supply.
3. a kind of method of municipal sludge desiccation comprehensive utilization according to claim 1, it is characterised in that: the step 5) Deduster include cyclone dust collectors, bag filter and wet cottrell, the cyclone dust collectors and bag filter Dedusting is connected to rotary kiln, and the wet cottrell is connected to tunnel oven.
4. a kind of method of sludge drying comprehensive utilization according to claim 1, it is characterised in that: the chemical washing Device includes alkali electroless wash mill and acidic chemical wash mill, and the alkali electroless wash mill uses Na2OH lye The sour gas in foul smell is handled, the acidic chemical wash mill uses the ammonia nitrogen gas in 5% sulfuric acid solution foul smell.
5. a kind of method of sludge drying comprehensive utilization according to claim 1, it is characterised in that: the plasma deodorization Device is DDBD Plasma deodorizer.
6. a kind of method of sludge drying comprehensive utilization according to claim 1, it is characterised in that: the dewatered sludge accounts for The 15% of common brick raw material.
CN201811459093.9A 2018-11-30 2018-11-30 A kind of method of sludge drying comprehensive utilization Pending CN109574451A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110436731A (en) * 2019-08-05 2019-11-12 山东理工大学 Sludge drying system based on biomass energy
CN110947735A (en) * 2019-12-16 2020-04-03 广州市醇美环保科技有限公司 Comprehensive treatment method and treatment system for treating wastes with wastes in household garbage and sludge
CN115179413A (en) * 2022-09-09 2022-10-14 山东省聚祥固废应用研究院 System for making bricks by using municipal sludge and production method
CN115784556A (en) * 2022-12-28 2023-03-14 广东广业投资集团有限公司 Sludge drying method, sludge drying system and tunnel kiln production system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003055033A (en) * 2001-08-17 2003-02-26 Zensei Koshigen Kagi Kofun Koshi RECYCLING METHOD FOR CALCIUM FLUORIDE (CaF2) SLUDGE AND RECYCLED PRODUCT
CN104315844A (en) * 2014-11-15 2015-01-28 郭金良 Process for producing brick by waste heat drying sludge from sintered brick production line tunnel kiln
CN205575906U (en) * 2016-04-29 2016-09-14 广东绿由环保设备有限公司 Sludge drying system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003055033A (en) * 2001-08-17 2003-02-26 Zensei Koshigen Kagi Kofun Koshi RECYCLING METHOD FOR CALCIUM FLUORIDE (CaF2) SLUDGE AND RECYCLED PRODUCT
CN104315844A (en) * 2014-11-15 2015-01-28 郭金良 Process for producing brick by waste heat drying sludge from sintered brick production line tunnel kiln
CN205575906U (en) * 2016-04-29 2016-09-14 广东绿由环保设备有限公司 Sludge drying system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110436731A (en) * 2019-08-05 2019-11-12 山东理工大学 Sludge drying system based on biomass energy
CN110947735A (en) * 2019-12-16 2020-04-03 广州市醇美环保科技有限公司 Comprehensive treatment method and treatment system for treating wastes with wastes in household garbage and sludge
CN110947735B (en) * 2019-12-16 2020-06-30 广州市醇美环保科技有限公司 Comprehensive treatment method and treatment system for treating wastes with wastes in household garbage and sludge
CN115179413A (en) * 2022-09-09 2022-10-14 山东省聚祥固废应用研究院 System for making bricks by using municipal sludge and production method
CN115784556A (en) * 2022-12-28 2023-03-14 广东广业投资集团有限公司 Sludge drying method, sludge drying system and tunnel kiln production system

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Application publication date: 20190405