CN106635225A - System for cooperative harmless treatment of sludge and straw - Google Patents

System for cooperative harmless treatment of sludge and straw Download PDF

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Publication number
CN106635225A
CN106635225A CN201610806244.8A CN201610806244A CN106635225A CN 106635225 A CN106635225 A CN 106635225A CN 201610806244 A CN201610806244 A CN 201610806244A CN 106635225 A CN106635225 A CN 106635225A
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China
Prior art keywords
sludge
stalk
fuel
heat
oil
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CN201610806244.8A
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Chinese (zh)
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孟祥雷
查晓峰
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孟祥雷
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Priority to CN201610806244.8A priority Critical patent/CN106635225A/en
Publication of CN106635225A publication Critical patent/CN106635225A/en
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    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10LFUELS 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
    • C10L5/00Solid fuels
    • C10L5/40Solid fuels essentially based on materials of non-mineral origin
    • C10L5/44Solid fuels essentially based on materials of non-mineral origin on vegetable substances
    • C10L5/445Agricultural waste, e.g. corn crops, grass clippings, nut shells or oil pressing residues
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10LFUELS 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
    • C10L5/00Solid fuels
    • C10L5/40Solid fuels essentially based on materials of non-mineral origin
    • C10L5/46Solid fuels essentially based on materials of non-mineral origin on sewage, house, or town refuse
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10LFUELS 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
    • C10L2290/00Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
    • C10L2290/02Combustion or pyrolysis
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10LFUELS 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
    • C10L2290/00Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
    • C10L2290/06Heat exchange, direct or indirect
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10LFUELS 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
    • C10L2290/00Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
    • C10L2290/08Drying or removing water
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10LFUELS 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
    • C10L2290/00Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
    • C10L2290/24Mixing, stirring of fuel components
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10LFUELS 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
    • C10L2290/00Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
    • C10L2290/28Cutting, disintegrating, shredding or grinding
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10LFUELS 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
    • C10L2290/00Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
    • C10L2290/30Pressing, compressing or compacting
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10LFUELS 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
    • C10L2290/00Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
    • C10L2290/32Molding or moulds
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00Technologies for the production of fuel of non-fossil origin
    • Y02E50/10Biofuels, e.g. bio-diesel
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00Technologies for the production of fuel of non-fossil origin
    • Y02E50/30Fuel from waste, e.g. synthetic alcohol or diesel

Abstract

The invention specifically relates to a system for cooperative harmless treatment of sludge and straw, belonging to the technical field of environmental protection. The system comprises a sludge pretreatment device, a straw pretreatment device, a mixing device, a pelletizer and a heat-conduction oil heating device. The whole process system realizes high-efficiency cyclic utilization, automatic totally-enclosed continuous operation, and zero-discharge of heat and waste materials; and the system can thoroughly realize reclamation of industrial waste and is low in cost and high in practicality.

Description

A kind of sludge cooperates with innocuity disposal system with stalk
Technical field
The invention belongs to environmental technology field, and in particular to a kind of sludge cooperates with innocuity disposal system with stalk.
Background technology
Municipal sludge, as the inevitable outcome of sewage treatment plant, is city domestic sewage and industrial wastewater in processing procedure The solid waste of generation.With the development of society and gradually stepping up for living standard, the yield of municipal sewage is also increasingly increasing It is long, so as to result in the increase of municipal sludge yield.By taking 20,000 tons/d municipal administrations water factory as an example, dewatered sludge amount about 6- is produced daily 10 tons, according to statistics, the sludge quantity of current China discharge every year is about 22,000,000 tons (moisture content is based on 80%), and so quantity is huge If big municipal sludge cannot get appropriate disposal will cause secondary pollution to environment.Have containing substantial amounts of in municipal sludge Machine thing, with higher calorific value, can directly burn or with other biological matter mixed combustion;Simultaneously containing abundant nitrogen phosphorus in sludge Deng materials such as nutrients, heavy metal and pathogenic bacteria and pathogens, if dealt with improperly, it will cause serious danger to ecological environment Evil.
The mud being widely used at present mainly has landfill, compost and burning.But, in view of existing water factory's addressing Limit, typically then can be more troublesome to remote landfill yard transported great, particularly mountain area;And due to Sludge landfill bearing capacity Difference, secondary pollution problems, more refuse landfill has been reluctant to reclaim landfill or raising disposal costs substantially.Therefore, with fill out Bury and compared with compost, sludge incineration can volume reduction to greatest extent, the volume of the remaining ash content of burning is only the 10% of initial volume, Pathogen after burning in sludge is thoroughly killed, and the stability of heavy metal is improved, and landfill and heap are reduced to a certain extent The pollution problem that underground water may be caused during fertilizer, while being also capable of achieving the recycling of the energy.Studies have shown that, it is dirty Mud individually burn then there are problems that energy consumption, equipment requirement it is high and, therefore, sludge pollution has become public affairs One of subject matter of crowd's concern..
At present on the basis of traditional mud, many researchers both domestic and external to sludge it is innoxious, The aspects such as minimizing, stabilisation, resource have carried out more exploratory developments.Such as sludge is used to prepare building materials, cracking liquefaction Or some sorbing materials etc. are prepared, but the studies above does not get a lot of applications.
Biomass fuel is a kind of regenerative resource, refers to the various organic substances produced by sun photosynthesis, It is a kind of form of energy of the solar energy in the form of chemical energy among biology, directly or indirectly from the light of plant Cooperation is used.Biomass be considered as be only second to coal, oil and natural gas and occupy the energy of world energy sources total quantity consumed the 4th Source, reserves big advantage wide with distribution.Biomass as organic matter fuel are closed by the macromolecular organic of Various Complex The complex of thing composition, chemical composition mainly has:Cellulose, hemicellulose, lignin and extract etc., these polymer substances Also different in variety classes biomass, its composition of the zones of different of one species biomass, some even have very big difference.
Biomass can typically divide following 4 big class:1. lignin:Wooden unit, wood chip, bark, tree root etc.;2. agricultural wastes: Stalk, fruit stone, corncob, sugarcane skin slag etc.;3. water plant:Algae, water hyacinth etc.;4. oil crops:Cottonseed, numb seed, oil Paulownia etc..The combustible component of biomass is mainly organic element such as carbon, hydrogen, nitrogen and sulphur.Although for the composition of element, biomass The composition and conventional fuel coal of fuel substantially has no difference, but exactly each composition difference quantitatively result in biology The difference of combustion product processed and coal., generally 50% or so, less than common bituminous coal, and hydrogen content is then for the carbon content of biomass Common bituminous coal is significantly larger than higher than bituminous coal, especially fugitive constituent and oxygen content, oxygen content exceedes 10 times or so of coal.Due to biomass The combustible component content of fuel compares relatively low, therefore the low heat valve of biomass fuel is lower than general bituminous coal.In combustion of catching fire Aspect of performance is burnt, the volatile content of biomass fuel is significantly larger than common bituminous coal, cause ignition performance apparently higher than general Logical bituminous coal.In terms of burning pollutant generates discharge, the sulfur content of biomass fuel is only 0.1% or so, nitrogen content and theory Nitrogen volume is also below bituminous coal, so total SO2And NOxGrowing amount is all far below bituminous coal.According to the high volatilization of straw biomass fuel Point, high oxygen amount, the fundamental characteristics of low-sulfur part and ash, therefore for coal, straw biomass has inflammable, wiper ring The characteristics of guarantor.Currently, the consumption of biomass fuel has accounted for the 14% of total worldwide energy consumption, in this ratio of developing country more It is to reach 38%.Predict according to the World Food Programme (FAO), the regenerative resource to the year two thousand fifty based on biomass energy will be provided The electric power in the whole world 60% and 40% fuel, its price is less than fossil fuel.Therefore, the exploitation of biomass fuel have been Become the common recognition in the world.
China is a large agricultural country, possesses abundant agricultural straw resource, and the north is mainly with wheat, maize straw It is main, and south is then based on straw.According to statistics, the annual production of the existing agricultural crop straw of China is about 700,000,000 tons, and stalk has heat It is worth the also higher advantage of higher and combust.But because people are not enough to stalk resource comprehensive utilization understanding, cause straw The utilization rate of stalk is very low.Meanwhile, crop straw burning and the phenomenon for arbitrarily abandoning are also of common occurrence, are not only to agricultural straw resource Significant wastage, and also result in environmental pollution.
Therefore, many utilization sludge and stalk are had been developed in prior art to carry out joining and burns the technique that collaboration is processed, and leads to Cross test sludge and find that after single mud sample catches fire, its burn rate is not high with the DTG curves of stalk, it is impossible to be quick Higher ignition temperature is formed, and combustion process is uneven.And mix after stalk, the volatile matter in stalk is analysed in a large number in low-temperature space Go out and burn, increased the severe degree of reaction so that ignition temperature, duration etc. meet in sludge some than stronger , the burning condition of stable compound, so as to improve the combustion stability and after-flame level of aggregate sample;And mix with stalk The increase of mixed ratio, the combustibility index increase of aggregate sample, combustibility has been lifted.
But, research is the reason for possible, it was also found that the integrated combustion property exponential quantity of single stalk sample is higher than sludge The temperature of volatile ingredient and burning in stalk is more concentrated, and most of volatile component is fast in 200-500 DEG C of temperature range The precipitation and burning of speed, after sample catches fire, can be rapidly formed high temperature until after-flame.And then because organic matter is constituted in sludge Relative complex, the chemical bond of each composition is strong and weak different, and it separates out and burn point and is located at different temperature sections, and because of its precipitation and fires Not concentrating for temperature is burnt, the stability of its burning is have impact on.Therefore, burn if directly sludge and stalk are entered into stove jointly, not only Its combustibility is subject to extreme influence, and can produce more serious sintering phenomenon.
The content of the invention
For this purpose, the technical problem to be solved is to provide a kind of sludge to cooperate with harmless treatment system with stalk System, to solve the problems, such as prior art in sludge and stalk co-fire calorific value be relatively low and easy-sintering.
To solve above-mentioned technical problem, sludge of the present invention cooperates with innocuity disposal system with stalk, including:
Sludge pretreatment equipment, for the sludge to be dried into processed;
Stalk pretreatment equipment, for the stalk to be carried out into pulverization process;
Mixing equipment, for the sludge and stalk to be mixed, and is processed for adding inert additwe;
Comminutor, for the process of the mixed material die mould of the sludge and stalk to be made into fuel slug;
Heat-conducting oil heating equipment, is connected respectively with the comminutor and the stalk pretreatment equipment, for being obtained Fuel slug burned, and by burn recycle heat utilized to the sludge pretreatment equipment.
The sludge pretreatment equipment is vac-uum disc dryer, and the thermal medium that adds of the vac-uum disc dryer includes steaming Vapour, hot water or conduction oil.
The vac-uum disc dryer includes support, and drive component, heat drying component have been sequentially arranged on the support And vent gas treatment component;
The drive component includes that motor is connected the reductor of driving with the motor, and the reductor passes through shaft coupling Device is connected with the heat drying component, realizes the transmission of driving force;
The heat drying component includes heating tank type tube body, and in the heating tank type tube body groomed oar rachis is provided with, The circumference of the groomed oar rachis is provided with some blades, and the hollow blade the tip of the axis stretches out the heating tank type tube body simultaneously Thermal source turnover swivel joint is installed, the groomed oar rachis is connected with the drive component, realizes the heat drying group The operating of part;
The heating tank type cylinder body outer wall is arranged with external thermal insulation circular cylinder body, and outer with described in the heating tank type tube body Heating coil is set between insulation circular cylinder body, and the heating coil stretches out the two ends of the external thermal insulation circular cylinder body and respectively uses Export in the Secondary Heat Source import for importing thermal source and the Secondary Heat Source for deriving thermal source, realize the input and derivation of thermal source;
The external thermal insulation circular cylinder body top offers aspirating hole, the top of the external thermal insulation circular cylinder body and close institute State and material inlet is offered at front sealed cylinder end cap, the bottom of the external thermal insulation circular cylinder body and near the rear sealing drum Material outlet is offered at body end lid, the transport of material is realized;
The vent gas treatment component is included by pipeline and the cyclone separator, spray column that the aspirating hole is connected, cold Condenser and centrifugal high pressure fan, in the gas of the centrifugal high pressure fan part as carrier gas through carrier gas preheater, And it is used as carrier gas by being arranged at the drying machine carrier gas inlet on external thermal insulation circular cylinder body top and being back in drying machine, another part Gas is then as exhaust emissions.
The peripheral of disc outside of each blade is uniformly distributed four scrapers, for the bur on disc to be hung Fall.
The groomed oar rachis is 2 for being disposed in parallel in, and is driven by gear train engagement.
The two ends of the external thermal insulation circular cylinder body are respectively mounted and are fixed with front sealed cylinder and rear sealed cylinder, described hollow Front airtight and watertight padding and rear airtight and watertight padding are respectively arranged with paddle shaft and the heating tank type tube body phase link position.
The fuel oil firing equipment includes stove seat, and oil oven body is provided with the stove seat, and the oil oven originally sets in vivo Heat conduction coil pipe is equipped with, heat conduction oil medium is entered in the heat conduction coil pipe by the oil-in being arranged at the oil oven body outer wall The heat that fuel combustion is produced is absorbed, then is discharged by being arranged at the oil-out at the oil oven body outer wall, for the dirt Mud pre-processing device;
The oil oven body is provided below burner hearth and is connected with the oil oven body, is provided with the hearth outer wall Fuel inlet and slag notch, are provided with fire grate in the burner hearth, the fuel slug enters the burner hearth by the fuel inlet And burn on the fire grate, the fire grate to the direction of the slag notch is moved, and the waste fuel after burning is discharged.
The fuel oil firing equipment also includes being arranged at the exhanst gas outlet on the oil oven body top and is arranged at institute State the cleaning door of oil oven body bottom.
The system also includes fuel incineration tail gas processing equipment, for reclaiming the tail gas of fuel burning.
The system also includes the moisture reclaimer being connected with the sludge pretreatment equipment, for recovered material steaming The moisture sent out is recycled.
The invention also discloses described sludge cooperates with innocuity disposal system to carry out what sludge and stalk were processed with stalk Technique, specifically includes following steps:
(1) take sludge and be dried processed, and take crushed stalk, it is standby;
(2) sludge after above-mentioned process and stalk are mixed, and adds inert additwe mixing;
(3) fuel slug is made in Jing compressions after the mixture press dewatering obtained by step (2);
(4) take obtained fuel slug in step (3) to burn, and collect lime-ash and process tail gas.
In the step (2), the inert additwe includes the addition of Al-Si based additives, Ca based additives and/or S bases Agent.
The inert additwe includes kaolin, dolomite, lime stone, ammonium sulfate and/or alundum (Al2O3).
The addition of the inert additwe is the 0.1-20wt% of the sludge and stalk total amount.
In the step (2), in terms of the total amount of the sludge and stalk, the addition of the stalk is less than 20%.
In the step (1), the drying sludge is dehydrated to moisture content and is less than 30%.
In the step (1), the crushed stalk to particle diameter is 20-30mm.
Sludge of the present invention and stalk collaboration innocuity disposal system, using sludge and stalk to process raw material, by straw Compression forming after stalk mixes with sludge makes fuel slug, and institute's calorific value of gained fuel slug is uniform and is readily delivered, it is possible to reduce Substantial amounts of heat loss due to unburned gas and heat loss due to exhaust gas, and burning velocity is uniformly moderate, burns relatively stable, while Improve the calorific value of sludge and straw burning.Importantly, the present invention is in order to solve showing for sludge and straw burning easy-sintering As selected to the addition of the sintering phenomenon that suitable inert additwe contributes in alleviation combustion process.
In system of the present invention, the vac-uum disc dryer and the heat-conducting oil heating equipment are voluntarily research and development and set Meter, the drying effect of material is splendid, and the heat-conducting oil heating equipment is even more and the circulation for realizing heat is burned using fuel, real The efficient circulation for having showed whole process system is utilized and full-automatic, totally-enclosed " zero " dirt worked continuously, realize heat and waste material Dye discharge, and technique of the present invention fully achieves the recycling of trade waste, and cost is relatively low and practicality is stronger.
Description of the drawings
In order that present disclosure is more likely to be clearly understood, the specific embodiment below according to the present invention is simultaneously combined Accompanying drawing, the present invention is further detailed explanation, wherein,
Fig. 1 is the structural front view of vac-uum disc dryer of the present invention;
Fig. 2 is the structure top view of vac-uum disc dryer of the present invention;
Fig. 3 is the structural representation of heat-conducting oil heating equipment of the present invention;
Fig. 4 is the burning process flow chart of processing system of the present invention;
Reference is expressed as in figure:1- heating tank type tube bodies, 2- groomed oar rachises, 3- motors, 4- reductors, 5- shaft couplings Device, 6- driven shafts, 7- heating coils, 7-1- Secondary Heat Source imports, 7-2- Secondary Heat Sources outlet, packing seal before 8- is protected outside 9- Warm circular cylinder body, sealed cylinder before 10-, sealed cylinder after 11-, 12- driving shafts, 13- thermals source turnover swivel joint, 13-1- the One thermal source import, the thermal source outlets of 13-2- first, packing seal after 14-, 15- ventings of dust explosion hole, 16- aspirating holes, 17- cyclone separators, 18- spray columns, 19- condensers, 20- centrifugal high pressure fans, 21- material inlets, 22- feed worm pumps, 23- feed bins, 24- oars Leaf, 25- scrapers, 26- material outlets, 27- star-shaped discharge valves, 28- discharging spiral conveyors, 29- carrier gas preheaters, 30- carrier gas Import, 31- oil oven bodies, 32- stove seats, 33- refractory brick, 34- oil-ins, 35- oil-outs, 36- exhanst gas outlets, 37- cleaning doors, 38- fuel inlets, 39- fire grates, 40- slag notches, 41- heat conduction coil pipes, 42- burner hearths.
Specific embodiment
Sludge of the present invention cooperates with innocuity disposal system to include with stalk:
Sludge pretreatment equipment, for the sludge to be dried into processed;
Moisture reclaimer, is connected with the sludge pretreatment equipment, and the moisture for recovered material evaporation is carried out back Receive and utilize;
Stalk pretreatment equipment, for the stalk to be carried out into pulverization process;
Mixing equipment, for the sludge and stalk to be mixed, and is processed for adding inert additwe;
Comminutor, for the process of the mixed material die mould of the sludge and stalk to be made into fuel slug;
Heat-conducting oil heating equipment, is connected respectively with the comminutor and the stalk pretreatment equipment, for being obtained Fuel slug burned, and by burn recycle heat utilized to the sludge pretreatment equipment;
Fuel incineration tail gas processing equipment, for reclaiming the tail gas of fuel burning.
Sludge pretreatment equipment of the present invention be vac-uum disc dryer, the vac-uum disc dryer plus thermal medium Including steam, hot water or conduction oil.
As shown in Figure 1-2, the vac-uum disc dryer include support, be sequentially arranged on the support drive component, Heat drying component and vent gas treatment component.
The drive component includes that motor 3 is connected the reductor 4 of driving with the motor 3, and the reductor 4 passes through Shaft coupling 5 is connected with the heat drying component, realizes the transmission of driving force.
The heat drying component includes being provided with what is be set up in parallel in heating tank type tube body 1, the heating tank type tube body 1 A tooth is stretched out and is fixed with from the front end of heating tank type tube body 1 in 2 groomed oar rachises 2, the front end of each groomed oar rachis 2 Wheel, forms intermeshing driving gear and driven gear is driven.The two ends of the shaft coupling 5 are separately installed with driving shaft 12 and driven shaft 6, the reductor 4 is connected with the driving shaft 12, and the driven shaft 6 is hollow with one of them being meshed The driving gear of paddle shaft 2 is connected, and drives another groomed oar rachis 2 to rotate backward.
The circumference of the groomed oar rachis 2 is provided with some circular blades 24, and the peripheral of disc outside of each blade 24 is Even four scrapers 25 of distribution, can drop bur on disc and hang, at the same scraper 25 preferably can be provided with it is certain Angle has progradation to dry material.
The outer wall of heating tank type tube body 1 is arranged with external thermal insulation circular cylinder body 9, and in the heating tank type tube body 1 and institute Setting heating coil 7 between external thermal insulation circular cylinder body 9 is stated, the heating coil 7 stretches out the two ends of the external thermal insulation circular cylinder body 9 Respectively it is used to import the Secondary Heat Source import 7-1 of thermal source and the Secondary Heat Source for deriving thermal source exports 7-2, realizes thermal source Input and derivation, Secondary Heat Source import 7-1 and Secondary Heat Source outlet 7-2 stretch out from the bottom of external thermal insulation circular cylinder body 9.
Material inlet is offered at the top of the external thermal insulation circular cylinder body 9 and the close front sealed cylinder end cap 10 21, material outlet 26 is offered at the bottom of the external thermal insulation circular cylinder body 9 and the close rear sealed cylinder end cap 11, it is real Existing material is dried and completes transport in heating tank type tube body 1.The material inlet 21 is connected with feed worm in turn Pump 22 and feed bin 23, the discharging opening 26 is connected with star-shaped discharge valve 27 and discharging spiral conveyor 28 in turn.
Each groomed oar rachis 2 is separately installed with respectively with the inside and outside intersection of the front-end and back-end of heating tank type tube body 1 Front packing seal 8 and rear packing seal 14, the two ends of the external thermal insulation circular cylinder body 9 are respectively mounted and are fixed with front sealed cylinder 10 With rear sealed cylinder 11, front sealed cylinder 10 is by the front end of groomed oar rachis 2, driving gear, driven gear and front packing seal 8 Cover sets wherein, and rear sealed cylinder end cap 11 sets rear packing seal 14 and the thermal source turnover cover of swivel joint 13 wherein.
The inside and outside intersection of driven shaft and front sealed cylinder 10 then with mechanical connection, mechanical seal can for it is existing Know and routine sealing structure, for example, can include with driven sealing coordinate axle sleeve and be arranged on outside axle sleeve Pedestal, with axle sleeve rotating ring, stationary ring, bearing, spring and outside framework oil seal are equipped with, and are offered on sleeve lining first annular Groove, is provided with sleeve sealing circle in first annular groove, the end that pedestal is connected with front sealed cylinder end cap 10 offers the second ring Shape groove, is provided with kettle mouth sealing ring in the second cannelure, be provided with stationary ring sealing ring between pedestal and stationary ring, axle sleeve and rotating ring it Between be provided with seal ring of moving ring.
Thermal source turnover rotation is stretched out and is provided with from the rear end of interior heating tank type tube body 1 in the rear end of each groomed oar rachis 2 Joint 13, thermal source turnover swivel joint 13 has the first thermal source import 13-1 and the first thermal source outlet 13-2, the first thermal source import 13-1 and the first thermal source outlet 13-2 stretch out from rear sealed cylinder end cap 11, and the top of external thermal insulation circular cylinder body 9 offers venting of dust explosion Hole 15, manhole and aspirating hole 16.
The vent gas treatment component includes the cyclone separator 17, spray column being connected with the aspirating hole 16 by pipeline 18th, condenser 19 and centrifugal high pressure fan 20, a part is passed through as carrier gas in the gas of the centrifugal high pressure fan 20 Carrier gas preheater 29, and be back in drying machine by being arranged at the drying machine carrier gas inlet 30 on the top of external thermal insulation circular cylinder body 9 Used as carrier gas, another part gas is then as exhaust emissions.
In system of the present invention, the heat-conducting oil heating equipment respectively with the sludge pretreatment equipment and comminutor phase Connection, the fuel slug is burned gained energy transmission and is used as thermal medium into the sludge pretreatment equipment, after cooling Medium be recirculated to absorb heat in heat-conducting oil heating equipment, realize the energy transfer and conversion of whole system.It is described to lead Deep fat firing equipment may be selected typical thermal-conductive oil firing equipment of the prior art, or approximate device.
In the following embodiments of the present invention, as shown in figure 3, heat-conducting oil heating equipment of the present invention includes stove seat 32, it is described It is provided with stove seat 32 in oil oven body 31, the oil oven body 31 and is provided with heat conduction coil pipe 41, heat conduction oil medium is by arranging Oil-in 34 at the outer wall of oil oven body 31 is entered in the heat conduction coil pipe 41 and absorbs the heat that fuel combustion is produced, then Discharged by being arranged at the oil-out 35 at the outer wall of oil oven body 31, for the sludge pretreatment equipment.The oil oven The top of body 31 is provided with exhanst gas outlet 36, and the bottom of the oil oven body 31 is provided with cleaning door 37, the oil oven body 31 are internally provided with refractory brick 33.
The oil oven body 31 is provided below burner hearth 42 and is connected with the oil oven body 31, the outer wall of the burner hearth 42 Place is provided with fuel inlet 38 and slag notch 40, the burner hearth 42 and is provided with fire grate 39, and the fuel slug passes through the fuel Import 38 enters the burner hearth 42 and burns on the fire grate 39, and the fire grate 39 to the direction of the slag notch 40 is moved, Waste fuel after burning is discharged.
The sludge is carried out using processing system of the present invention and stalk cooperates with technological process such as Fig. 4 of harmless treatment It is shown, specifically include:
(1) sludge after preliminary hydro-extraction is input into into wet mud feed bin it is temporary, and Jing conveying worms be delivered to it is described Dehydration is dried in vac-uum disc dryer, dried sludge Jing bucket elevators feeding dewatered sludge feed bin is standby, and dirty Mud is dried the moisture of evaporation and then reclaims respectively through spray column process and condenser, is subsequently reclaimed by the process of half-dried extracting tower;
Taking a selected amount of stalk Jing stalk pretreatments equipment carries out being crushed to suitable particle diameter, standby;
(2) sludge and stalk after above-mentioned process is input into into into the mixing equipment mixing, and selected addition inertia Additive is mixed;
(3) mixture of gained is delivered to into the comminutor, fuel slug is made in Jing compressions Jing after press dewatering, and conveys It is standby to fuel storage silo;
(4) obtained fuel slug Jing bucket elevators are taken and is delivered in the burner hearth of the heat-conducting oil heating equipment and burnt Burning, and collect lime-ash carries out making the process of the accessory substances such as brick, while by the tail gas for burning respectively through half-dried extracting tower, bag-type dust After device process, arrange via outside chimney.
The heat that burning fuel block is obtained in the burner hearth heats the conduction oil via heating coil, and it is heated after Conduction oil is delivered to the vac-uum disc dryer to provide required energy as thermal medium, and the cold oil medium after cooling down is then again The heat for absorbing the incinerator through the heat-conducting oil heating equipment is heated, to realize the energy circulation profit of whole system With, really realize it is totally-enclosed work continuously and no pollution discharge.
In the following each embodiments of the present invention, the fuel burning for the sludge in the case of different ratio and stalk is ground Study carefully, to verify the effect of innocuity disposal system of the present invention.
Embodiment 1
A kind of sludge of the present invention cooperates with harmless treatment process with stalk, comprises the steps:
(1) taking sludge (moisture content 80%) 8kg, that processed is dried in vac-uum disc dryer is low to moisture content It is standby in 30%;
It is 20-30mm to take stalk 2kg and be crushed to particle diameter, standby;
(2) sludge after above-mentioned process and stalk are mixed, and adds kaolin inert additwe 2k g mixings;
(3) mixture obtained by step (2) is conventionally carried out into press dewatering process, it is subsequently compressed to make one The fuel slug being sized;
(4) take obtained fuel slug in step (3) and be placed in heat-conducting oil heating equipment and burned, and collect lime-ash and process Tail gas, while will burn the fuel slug gained heat recovery is dehydrated it into the vac-uum disc dryer for drying sludge To realize recycling for heat.
Embodiment 2
A kind of sludge of the present invention cooperates with harmless treatment process with stalk, comprises the steps:
(1) taking sludge (moisture content 80%) 9kg, that processed is dried in vac-uum disc dryer is low to moisture content It is standby in 30%;
It is 20-30mm to take stalk 1kg and be crushed to particle diameter, standby;
(2) sludge after above-mentioned process and stalk are mixed, and adds dolomite inert additwe 1kg mixings;
(3) mixture obtained by step (2) is conventionally carried out into press dewatering process, it is subsequently compressed to make one The fuel slug being sized;
(4) take obtained fuel slug in step (3) and be placed in heat-conducting oil heating equipment and burned, and collect lime-ash and process Tail gas, while will burn the fuel slug gained heat recovery is dehydrated it into the vac-uum disc dryer for drying sludge To realize recycling for heat.
Embodiment 3
A kind of sludge of the present invention cooperates with harmless treatment process with stalk, comprises the steps:
(1) take sludge (moisture content 80%) 8.5kg and processed is dried in vac-uum disc dryer to moisture content It is standby less than 30%;
It is 20-30mm to take stalk 1.5kg and be crushed to particle diameter, standby;
(2) sludge after above-mentioned process and stalk are mixed, and adds lime stone and ammonium sulfate (mass ratio is 1: 1) inertia Additive 100g is mixed;
(3) mixture obtained by step (2) is conventionally carried out into press dewatering process, it is subsequently compressed to make one The fuel slug being sized;
(4) take obtained fuel slug in step (3) and be placed in heat-conducting oil heating equipment and burned, and collect lime-ash and process Tail gas, while will burn the fuel slug gained heat recovery is dehydrated it into the vac-uum disc dryer for drying sludge To realize recycling for heat.
Embodiment 4
A kind of sludge of the present invention cooperates with harmless treatment process with stalk, comprises the steps:
(1) take sludge (moisture content 80%) 9.5kg and processed is dried in vac-uum disc dryer to moisture content It is standby less than 30%;
It is 20-30mm to take stalk 0.5kg and be crushed to particle diameter, standby;
(2) sludge after above-mentioned process and stalk are mixed, and adds alundum (Al2O3) inert additwe 500g mixings;
(3) mixture obtained by step (2) is conventionally carried out into press dewatering process, it is subsequently compressed to make one The fuel slug being sized;
(4) take obtained fuel slug in step (3) and be placed in heat-conducting oil heating equipment and burned, and collect lime-ash and process Tail gas, while will burn the fuel slug gained heat recovery is dehydrated it into the vac-uum disc dryer for drying sludge To realize recycling for heat.
Embodiment 5
A kind of sludge of the present invention cooperates with harmless treatment process with stalk, comprises the steps:
(1) take sludge (moisture content 80%) 9.9kg and processed is dried in vac-uum disc dryer to moisture content It is standby less than 30%;
It is 20-30mm to take stalk 0.1kg and be crushed to particle diameter, standby;
(2) sludge after above-mentioned process and stalk are mixed, and add kaolin and alundum (Al2O3) (mass ratio is 1: 1) Inert additwe 200g is mixed;
(3) mixture obtained by step (2) is conventionally carried out into press dewatering process, it is subsequently compressed to make one The fuel slug being sized;
(4) take obtained fuel slug in step (3) and be placed in heat-conducting oil heating equipment and burned, and collect lime-ash and process Tail gas, while will burn the fuel slug gained heat recovery is dehydrated it into the vac-uum disc dryer for drying sludge To realize recycling for heat.
Comparative example
Handling process is same as Example 1 described in this comparative example, and it is differed only in the step (2) without any Inert additwe.
Experimental example
1st, the component analysis of fuel
Fuel slug to preparing in above-described embodiment 1-5 carries out its composition component analysis, and record data see the table below 1.
The fuel slug composition component of table 1 is analyzed
2nd, combustibility result
The combustibility of each burning process in above-described embodiment 1-5 and comparative example is detected, the heat of each technique is tested Value and the sintering situation burned, and it is recorded in table 2 below.
The combustibility result of table 2
From upper table data, handling process of the present invention, the calorific value of sludge and straw burning can be effectively lifted, and And the inert additwe for adding contributes to alleviating the sintering phenomenon in combustion process.
Obviously, above-described embodiment is only intended to clearly illustrate example, and not to the restriction of embodiment.It is right For those of ordinary skill in the art, can also make on the basis of the above description other multi-forms change or Change.There is no need to be exhaustive to all of embodiment.And the obvious change thus extended out or Among changing still in the protection domain of the invention.

Claims (10)

1. a kind of sludge cooperates with innocuity disposal system with stalk, it is characterised in that include:
Sludge pretreatment equipment, for the sludge to be dried into processed;
Stalk pretreatment equipment, for the stalk to be carried out into pulverization process;
Mixing equipment, for the sludge and stalk to be mixed, and is processed for adding inert additwe;
Comminutor, for the process of the mixed material die mould of the sludge and stalk to be made into fuel slug;
Heat-conducting oil heating equipment, is connected respectively with the comminutor and the stalk pretreatment equipment, for by obtained combustion Material block is burned, and is utilized recycle heat is burned to the sludge pretreatment equipment.
2. sludge according to claim 1 cooperates with innocuity disposal system with stalk, it is characterised in that the sludge is located in advance Reason equipment is vac-uum disc dryer, and the thermal medium that adds of the vac-uum disc dryer includes steam, hot water or conduction oil.
3. sludge according to claim 2 cooperates with innocuity disposal system with stalk, it is characterised in that the vacuum disk Drying machine includes support, and drive component, heat drying component and vent gas treatment component have been sequentially arranged on the support;
The drive component includes that motor (3) is connected the reductor (4) of driving with the motor (3), the reductor (4) It is connected with the heat drying component by shaft coupling (5), realizes the transmission of driving force;
The heat drying component includes being provided with groomed oar rachis in heating tank type tube body (1), the heating tank type tube body (1) (2), the circumference of the groomed oar rachis (2) is provided with some blades (24), and the end of the groomed oar rachis (2) stretches out described Heating tank type tube body (1) is simultaneously provided with thermal source turnover swivel joint (13), the groomed oar rachis (2) and the drive component phase Connection, realizes the operating of the heat drying component;
Heating tank type tube body (1) outer wall is arranged with external thermal insulation circular cylinder body (9), and the heating tank type tube body (1) with Heating coil (7) is set between the external thermal insulation circular cylinder body (9), and the heating coil (7) stretches out the external thermal insulation circular cylinder The two ends of body (9) are respectively used to import the Secondary Heat Source import (7-1) of thermal source and the Secondary Heat Source for deriving thermal source is exported (7-2) input and derivation of thermal source, are realized;
External thermal insulation circular cylinder body (9) top offers aspirating hole (16), the top of the external thermal insulation circular cylinder body (9) and Material inlet (21) is offered near front sealed cylinder end cap (10) place, the bottom of the external thermal insulation circular cylinder body (9) is simultaneously And material outlet (26) is offered near rear sealed cylinder end cap (11) place, realize the transport of material;
The vent gas treatment component includes cyclone separator (17), the spray column being connected with the aspirating hole (16) by pipeline (18), condenser (19) and centrifugal high pressure fan (20), a part of conduct in the gas of the centrifugal high pressure fan (20) Carrier gas through carrier gas preheater (29), and by being arranged at the drying machine carrier gas inlet (30) on external thermal insulation circular cylinder body (9) top It is back in drying machine as carrier gas, another part gas is then as exhaust emissions.
4. sludge according to claim 3 cooperates with innocuity disposal system with stalk, it is characterised in that each described blade (24) peripheral of disc outside is uniformly distributed four scrapers (25), for hanging the bur on disc.
5. the sludge according to claim 3 or 4 cooperates with innocuity disposal system with stalk, it is characterised in that described hollow Paddle shaft (2) is 2 for being disposed in parallel in, and is driven by gear train engagement.
6. the sludge according to any one of claim 3-5 cooperates with innocuity disposal system with stalk, it is characterised in that described The two ends of external thermal insulation circular cylinder body (9) are respectively mounted and are fixed with front sealed cylinder (10) and rear sealed cylinder (11), described hollow Paddle shaft (2) is connected at position with the heating tank type tube body (1) and is respectively arranged with front airtight and watertight padding (8) and rear airtight and watertight padding (14)。
7. the sludge according to any one of claim 1-6 cooperates with innocuity disposal system with stalk, it is characterised in that described Fuel oil firing equipment includes stove seat (32), is provided with the stove seat (2) in oil oven body (31), the oil oven body (31) Heat conduction coil pipe (41) is provided with, heat conduction oil medium is entered by being arranged at the oil-in (34) at oil oven body (31) outer wall The heat that fuel combustion is produced is absorbed in the heat conduction coil pipe (41), then by being arranged at oil oven body (31) outer wall Oil-out (35) is discharged, for the sludge pretreatment equipment;
The oil oven body (31) is provided below burner hearth (42) and is connected with the oil oven body (31), the burner hearth (42) It is provided with outer wall in fuel inlet (38) and slag notch (40), the burner hearth (42) and is provided with fire grate (39), the fuel slug Burnt into the burner hearth (42) and on the fire grate (39) by the fuel inlet (38), the fire grate (39) is to described The direction motion of slag notch (40), the waste fuel after burning is discharged.
8. sludge according to claim 7 cooperates with innocuity disposal system with stalk, it is characterised in that the fuel oil adds Hot equipment also includes being arranged at the exhanst gas outlet (36) on oil oven body (31) top and is arranged at the oil oven body (31) cleaning door (37) of bottom.
9. the sludge according to any one of claim 1-8 cooperates with innocuity disposal system with stalk, it is characterised in that described System also includes fuel incineration tail gas processing equipment, for reclaiming the tail gas of fuel burning.
10. the sludge according to any one of claim 1-9 cooperates with innocuity disposal system with stalk, it is characterised in that institute The moisture reclaimer that system also includes being connected with the sludge pretreatment equipment is stated, the moisture for recovered material evaporation enters Row is recycled.
CN201610806244.8A 2016-08-30 2016-08-30 System for cooperative harmless treatment of sludge and straw Pending CN106635225A (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108587720A (en) * 2018-05-21 2018-09-28 宁夏紫荆花纸业有限公司 A kind of bio-fuel and preparation method thereof
WO2019153943A1 (en) * 2018-02-12 2019-08-15 舟山新舟鱼粉机械有限公司 Vacuum dual shaft dryer

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CN103968657A (en) * 2014-05-28 2014-08-06 常州市金陵干燥设备有限公司 High vacuum multi-axis paddle dryer
CN104059709A (en) * 2014-01-23 2014-09-24 江山华隆能源开发有限公司 Preparation method of anti-slagging biomass solid granular fuel
CN205048449U (en) * 2015-03-17 2016-02-24 南京工程学院 Processing system of grate type waste incinerator multifuel combustion mud
CN206843398U (en) * 2016-08-30 2018-01-05 孟祥雷 A kind of sludge cooperates with innocuity disposal system with stalk

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EP1502667A1 (en) * 2003-07-29 2005-02-02 Ecoengineering Impianti S.r.l. Municipal waste briquetting system and method of filling land
JP2006111645A (en) * 2004-10-12 2006-04-27 Nippon Steel Corp Method for producing formed massive material and method for disposing of waste utilizing formed massive material
CN104059709A (en) * 2014-01-23 2014-09-24 江山华隆能源开发有限公司 Preparation method of anti-slagging biomass solid granular fuel
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CN108587720A (en) * 2018-05-21 2018-09-28 宁夏紫荆花纸业有限公司 A kind of bio-fuel and preparation method thereof

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