CN109248900A - A kind of pretreating process of cement kiln synergic processing industrial hazard waste - Google Patents
A kind of pretreating process of cement kiln synergic processing industrial hazard waste Download PDFInfo
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- CN109248900A CN109248900A CN201811019053.2A CN201811019053A CN109248900A CN 109248900 A CN109248900 A CN 109248900A CN 201811019053 A CN201811019053 A CN 201811019053A CN 109248900 A CN109248900 A CN 109248900A
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- 239000004568 cement Substances 0.000 title claims abstract description 99
- 239000002699 waste material Substances 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims abstract description 33
- 230000008569 process Effects 0.000 title claims abstract description 26
- 238000012545 processing Methods 0.000 title claims abstract description 24
- 230000002195 synergetic effect Effects 0.000 title claims abstract description 21
- 239000007787 solid Substances 0.000 claims abstract description 96
- 239000002994 raw material Substances 0.000 claims abstract description 42
- 239000002920 hazardous waste Substances 0.000 claims abstract description 41
- 239000007788 liquid Substances 0.000 claims abstract description 40
- 239000000463 material Substances 0.000 claims abstract description 34
- 238000000227 grinding Methods 0.000 claims abstract description 31
- 239000000446 fuel Substances 0.000 claims abstract description 19
- 238000001354 calcination Methods 0.000 claims abstract description 13
- 238000000605 extraction Methods 0.000 claims abstract description 11
- 230000009969 flowable effect Effects 0.000 claims abstract description 11
- 239000000084 colloidal system Substances 0.000 claims description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 238000005485 electric heating Methods 0.000 claims description 14
- 239000008187 granular material Substances 0.000 claims description 12
- 125000004122 cyclic group Chemical group 0.000 claims description 10
- 239000012716 precipitator Substances 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000005086 pumping Methods 0.000 claims description 7
- 239000007921 spray Substances 0.000 claims description 7
- 238000012546 transfer Methods 0.000 claims description 7
- 231100001261 hazardous Toxicity 0.000 claims description 5
- 239000005416 organic matter Substances 0.000 claims description 3
- 239000002910 solid waste Substances 0.000 claims description 3
- 238000000354 decomposition reaction Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 description 21
- 230000008901 benefit Effects 0.000 description 13
- 238000002485 combustion reaction Methods 0.000 description 5
- 238000010304 firing Methods 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000505 pernicious effect Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 239000002341 toxic gas Substances 0.000 description 2
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000008821 health effect Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
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- 230000000116 mitigating effect Effects 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Treatment Of Sludge (AREA)
Abstract
The present invention provides a kind of pretreating process of cement kiln synergic processing industrial hazard waste, it includes the following steps: (one) when industrial hazard waste is semisolid greasy filth: (1) heat: greasy filth enters disc dryer, and to be heated to material flowable；(2) it separates: separating mud extraction phase solid and oil phase liquid with centrifuge；(3) grinding enters kiln: mud phase solid is broken to be milled to raw material fineness, is delivered to dore furnace；Oil phase liquid is as alternative fuel, then is delivered to calcining cement in cement kiln；(2) when industrial hazard waste is solid: (1) Raymond mill classification grinding: solid hazardous waste of the Raymond mill to the solid hazardous waste for having calorific value and without calorific value carries out separate compiling；(2) it measures；(3) enter kiln: having the solid hazardous waste of calorific value as alternative fuel, be transported to calcining cement in cement kiln；The solid hazardous waste of no calorific value is sent to dore furnace as cement raw material.The technique can save energy emission reduction, reduce energy waste.
Description
Technical field
The present invention relates to a kind of pretreating process of cement kiln synergic processing industrial hazard waste, belong to industrial danger
Dangerous Waste Disposal Technology field.
Background technique
Waste is disposed using the method for landfill earliest, but Landfills addressing, construction and service requirement are high,
Operating cost is high, and must pass through stabilization processes before filling, and otherwise easily causes " secondary pollution " of poisonous and harmful substance.
Currently, waste treatment technology specifically includes that physics disposal technology, chemical treatment method, biochemical disposal technology, steady
Determining/solidification disposal technology and incineration disposal technology.For opposite incineration disposal technology, other several disposal technologies exist obvious
Limitation: (1) be not final disposal technology, if physics disposal technology be only change physical form and substance separation, also need
Other disposition means are taken, generally as preprocessing means；(2) specific aim is too strong, only for specific waste, at chemistry
Reason, biological treatment and stabilization treatment technology；(3) cost of disposal is high.
Incineration disposal technology is the current disposition widely used disposal technology of waste, mainly includes the dedicated burning of waste
Furnace incineration technology and cement kiln synergic processing technology.Wherein, (rotary incinerator, stoker fired grate are burnt waste incinerator special
Burn furnace, fluidized bed incinerator, liquid injection furnace, multicell incinerator, cyclone incineration furnace) it can handle the wastes of various forms,
But a large amount of auxiliary fuels (oil) are needed, processing cost is high, disposes small scale, needs complicated exhaust treatment system to be just able to satisfy environmental protection and wants
It asks, the flying ash of the dregs of incinerator of generation, enrichment dioxin and heavy metal still needs to further dispose, and here it is prior art institutes
Existing shortcoming.
Summary of the invention
The technical problem to be solved in the present invention aiming at deficiency of the prior art, and provides a kind of cement kiln
The pretreating process of cooperative disposal industrial hazard waste, the technique can save a large amount of land resource, energy-saving and emission-reduction, sufficiently
The energy is recycled, a large amount of energy waste is reduced.
This programme is achieved by the following technical measures: a kind of cement kiln synergic processing industrial hazard waste it is pre-
Treatment process, the industrial hazard waste are semisolid greasy filth and/or solid waste, the cement kiln synergic processing industry
The pretreating process of danger wastes includes the following steps:
(1) when the industrial hazard waste is semisolid greasy filth:
(1) heat: greasy filth enters disc dryer, and to be heated to material flowable；
(2) it separates: separating mud extraction phase solid and oil phase liquid with centrifuge；
(3) grinding, enter kiln: the mud phase solid colloid isolated in step (2) is milled to raw material fineness, then is delivered to decomposition
Furnace；The oil phase liquid isolated in step (2) enters holding vessel as alternative fuel, then is delivered to calcining cement in cement kiln；
(2) when the industrial hazard waste is solid:
(1) Raymond mill classification grinding: Raymond mill is solid hazardous useless to the solid hazardous waste for having calorific value and without calorific value
Gurry carries out separate compiling, and the granular material after grinding is delivered to different finished product bins respectively；
(2) measure: the granular material in finished product bin is delivered to weigher and is measured；
(3) enter firer's skill: after metering, having the solid hazardous waste of calorific value as alternative fuel, be transported in cement kiln and forge
It heats up water mud；The solid hazardous waste of no calorific value is delivered to dore furnace as cement raw material.
Preferably, when the industrial hazard waste is semisolid greasy filth, it includes the following steps:
(1) heat: greasy filth is first delivered to greasy filth and receives storehouse, and receives electric heating in storehouse in greasy filth, and greasy filth receives the temperature of storehouse inner cavity
Degree maintains between 60 DEG C -70 DEG C, then, the greasy filth in greasy filth reception storehouse is delivered to disc dryer through screw feeder and is added
Heat keeps material flowable to 70 DEG C -120 DEG C；
(2) separate: the greasy filth after heating to disc dryer is delivered to decanter centrifuge by plunger pump and separates mud extraction mutually admittedly
Body and oil phase liquid；
(3) grinding, enter kiln: the mud phase solid colloid isolated in step (2) is milled to raw material fineness, then passes through plunger pump
Dore furnace is delivered to as cement raw material；The oil phase liquid isolated in step (2) enters holding vessel as alternative fuel, then defeated
It send to calcining cement in cement kiln.
Preferably, it in the step (3), when mud phase solid is non-combustible solid, is broken in colloid mill and is milled to raw material fineness
It≤20 μm, screen over-size 18%-21%, when mud phase solid is flammable solid, is broken in colloid mill and is milled to raw material fineness≤1.5 μm,
Screen over-size is 18%-21%.
Preferably, in the step (1), greasy filth is heated to 80 DEG C, 90 DEG C, 95 DEG C, 100 DEG C or 110 by disc dryer
℃。
Preferably, in the step (1), greasy filth receives and is provided with electric heating layer on the outside of storehouse, and greasy filth receives storehouse inner cavity
Temperature maintains 62 DEG C, 65 DEG C or 68 DEG C.
Preferably, in the step (3), the oil phase liquid in holding vessel is sent by pumping to cement kiln head multicenter combustor
And calcining cement in cement kiln is sprayed into, and the input end of the transfer passage between holding vessel and cement kiln head is connected with steam tracing
Pipe, outlet end are connected with compressed air hose.
Preferably, when the industrial hazard waste is solid, it includes the following steps:
(1) Raymond mill is classified grinding: material feeds Raymond mill through plate-type feeding, and Raymond mill is to there is the solid hazardous useless of calorific value
Gurry and solid hazardous waste without calorific value carry out separate compiling, the granular material after grinding be delivered to respectively it is different at
Product feed bin；
(2) measure: the granular material in finished product bin is delivered to rotor weigher and is measured；
(3) enter firer's skill: after metering, having the solid hazardous waste of calorific value as alternative fuel, be transported in cement kiln and forge
It heats up water mud；The solid hazardous waste of no calorific value is delivered to dore furnace as cement raw material.
Preferably, in the step (1), Raymond mill connects cyclone separator, the object of the discharge port discharge of cyclone separator
Material is delivered in finished product bin by screw conveyor, and the return air inlet of cyclone separator is connected by backwind tube and negative-pressure cyclic blower
It connects, the air outlet of negative-pressure cyclic blower is by two and air hose even is connect with the air intake vent of Raymond mill and dust-precipitator respectively, whirlwind
The material of the discharge port of separator and dust-precipitator discharge passes through screw conveyor and is delivered in finished product bin.
Preferably, in the step (1), the solid hazardous waste without volatile organic matter is transported by transport device
To feeding warehouse, the outlet end of feeding warehouse is equipped with rod valve, and solid hazardous waste is discharged from the outlet of feeding warehouse and passes through skin
Band machine is transported to feeding bin, and the surface of plate-type feeding input end is arranged in the outlet of feeding bin.
The beneficial effect of this programme can according to the description of the above program, and the cement kiln synergic processing industrial hazard is useless
In the pretreating process of gurry, by waste sorting, pretreatment, grinding, and existing new dry process rotary kiln system is utilized
It is burned, lime-ash incorporates in clinker, and pernicious gas decomposes at high temperature, has both taken full advantage of flammable group in waste
Divide calorific value calcination of chamotte, and the production clinker of the available inorganic component in waste lime-ash is utilized, while solving common
The problems such as pollution of incinerator noxious gas emission, lime-ash secondary treatment, there is good environmental benefit, to rotary kiln adaptability
By force, treating capacity is big, and technology is simple and reliable, reasonable, and waste 100% is utilized, and has good social benefit and warp
Ji benefit.It can be seen that compared with prior art, the present invention implementing with substantive distinguishing features outstanding and significant progress
Beneficial effect be also obvious.
Detailed description of the invention
Fig. 1 is the process flow chart of the specific embodiment of the invention.
Fig. 2 is the pretreating process structural schematic diagram of semisolid greasy filth danger wastes in the specific embodiment of the invention.
Fig. 3 is the pretreating process structural schematic diagram of solid hazardous waste in the specific embodiment of the invention.
In figure, 1- greasy filth receives storehouse, 2- screw feeder, 3- disc dryer, 4- plunger pump, 5- decanter centrifuge, 6-
Colloid mill, 7- holding vessel, 8- steam companions, 9- compressed air hose, 10- cement kiln head, 11- cement kiln, 12- spray gun, 13- points
Solve furnace, 14- feeding warehouse, 15- rod valve, 16- belt feeder, 17- feeding bin, 18- plate-type feeding, 19- Raymond mill, 20- negative pressure
Circulating fan, 21- dust-precipitator, 22- cyclone separator, 23- screw conveyor, 24- finished product bin, 25- rotor feeder, 26-
Bucket elevator, 27- rotor weigher, 28- helicoidal pump, 29- roots blower.
Specific embodiment
In order to clarify the technical characteristics of the invention, below by specific embodiment, and its attached drawing is combined, to we
Case is illustrated.
A kind of pretreating process of cement kiln synergic processing industrial hazard waste, the industrial hazard waste are half solid
The pretreating process of state greasy filth and/or solid waste, the cement kiln synergic processing industrial hazard waste includes below
Step.
(1) when the industrial hazard waste is semisolid greasy filth:
(1) heat: greasy filth enters disc dryer 3, and to be heated to material flowable；
(2) it separates: separating mud extraction phase solid and oil phase liquid with centrifuge；
(3) grinding, enter kiln: the mud phase solid colloid mill 6 isolated in step (2) is broken to be milled to raw material fineness, then is delivered to point
Solve furnace 13；The oil phase liquid isolated in step (2) enters holding vessel 7 as alternative fuel, then is delivered in cement kiln 11 and forges
It heats up water mud；
Preferably, when the industrial hazard waste is semisolid greasy filth, it includes the following steps:
(1) heat: greasy filth is first delivered to greasy filth and receives storehouse 1, and receives electric heating in storehouse 1 in greasy filth, and greasy filth receives the outside in storehouse 1
It is provided with electric heating layer, the temperature that greasy filth receives 1 inner cavity of storehouse maintains between 60 DEG C -70 DEG C, and preferably greasy filth receives 1 inner cavity of storehouse
Temperature maintains 62 DEG C, 65 DEG C or 68 DEG C, then, the greasy filth in greasy filth reception storehouse 1 is delivered to disk through screw feeder 2 and is done
Dry machine 3 is heated to 70 DEG C -120 DEG C, and greasy filth is heated to 80 DEG C, 90 DEG C, 95 DEG C, 100 DEG C or 110 DEG C by preferably disc dryer 3,
Keep material flowable；
(2) separate: the greasy filth after heating to disc dryer 3 is delivered to decanter centrifuge 5 by plunger pump 4 and separates mud extraction phase
Solid and oil phase liquid；
(3) grinding, enter kiln:
The mud phase solid colloid mill 6 isolated in step (2) is broken to be milled to raw material fineness, and specifically, mud phase solid is can not
It when firing solid, is broken in colloid mill 6 and is milled to raw material fineness≤20 μm, screen over-size 18%-21%, mud phase solid is flammable solid
When, it is broken in colloid mill and is milled to raw material fineness≤1.5 μm, screen over-size 18%-21%；Material after broken mill passes through plunger pump 4 again
Dore furnace 13 is delivered to as cement raw material；
The oil phase liquid isolated in step (2) enters holding vessel 7 as alternative fuel, then is delivered in cement kiln 11 and calcines water
Mud, the preferably oil phase liquid in holding vessel 7 are sent by pumping to 10 multicenter combustor of cement kiln head and spray into cement kiln 11 and forges
It heats up water mud, and the input end of the transfer passage between holding vessel 7 and cement kiln head 10 is connected with steam companions 8, outlet end connects
It being connected to compressed air hose 9, the supply of tracing steam in steam companions 8, it is ensured that the temperature of oil phase liquid maintains burning point,
After being mixed in favor of oil phase liquid with compressed air can in cement kiln head 10 full combustion.
Embodiment 1: when the industrial hazard waste is semisolid greasy filth, it includes the following steps:
(1) heat: greasy filth is first delivered to greasy filth and receives storehouse 1, and receives electric heating in storehouse 1 in greasy filth, and greasy filth receives the outside in storehouse 1
It is provided with electric heating layer, the temperature that greasy filth receives storehouse inner cavity maintains 62 DEG C, then, greasy filth is received the greasy filth in storehouse 1 through spiral shell
Rotation feeder 2 is delivered to disc dryer 3 and is heated to 80 DEG C, keeps material flowable；
(2) separate: the greasy filth after heating to disc dryer 3 is delivered to decanter centrifuge 5 by plunger pump 4 and separates mud extraction phase
Solid and oil phase liquid；
(3) grinding, enter kiln:
The mud phase solid colloid mill 6 isolated in step (2) is broken to be milled to raw material fineness, and specifically, mud phase solid is can not
It when firing solid, is broken in colloid mill 6 and is milled to raw material fineness≤20 μm, screen over-size 18%-21%, mud phase solid is flammable solid
When, it is broken in colloid mill and is milled to raw material fineness≤1.5 μm, screen over-size 18%-21%；Material after broken mill passes through plunger pump 4 again
Dore furnace 13 is delivered to as cement raw material；
The oil phase liquid isolated in step (2) enters holding vessel 7 as alternative fuel, then is delivered in cement kiln 11 and calcines water
Mud, the preferably oil phase liquid in holding vessel 7 are sent by pumping to 10 multicenter combustor of cement kiln head and spray into cement kiln 11 and forges
It heats up water mud, and the input end of the transfer passage between holding vessel 7 and cement kiln head 10 is connected with steam companions 8, outlet end connects
It being connected to compressed air hose 9, the supply of tracing steam in steam companions 8, it is ensured that the temperature of oil phase liquid maintains burning point,
After being mixed in favor of oil phase liquid with compressed air can in cement kiln head 10 full combustion.
Embodiment 2: when the industrial hazard waste is semisolid greasy filth, it includes the following steps:
(1) heat: greasy filth is first delivered to greasy filth and receives storehouse 1, and receives electric heating in storehouse 1 in greasy filth, and greasy filth receives the outside in storehouse 1
It is provided with electric heating layer, the temperature that greasy filth receives 1 inner cavity of storehouse maintains 65 DEG C, then, greasy filth is received the greasy filth in storehouse 1 through spiral shell
Rotation feeder 2 is delivered to disc dryer 3 and is heated to 95 DEG C, keeps material flowable；
(2) separate: the greasy filth after heating to disc dryer 3 is delivered to decanter centrifuge 5 by plunger pump 4 and separates mud extraction phase
Solid and oil phase liquid；
(3) grinding, enter kiln:
The mud phase solid colloid mill 6 isolated in step (2) is broken to be milled to raw material fineness, and specifically, mud phase solid is can not
It when firing solid, is broken in colloid mill 6 and is milled to raw material fineness≤20 μm, screen over-size 18%-21%, mud phase solid is flammable solid
When, it is broken in colloid mill and is milled to raw material fineness≤1.5 μm, screen over-size 18%-21%；Material after broken mill passes through plunger pump 4 again
Dore furnace 13 is delivered to as cement raw material；
The oil phase liquid isolated in step (2) enters holding vessel 7 as alternative fuel, then is delivered in cement kiln 11 and calcines water
Mud, the preferably oil phase liquid in holding vessel 7 are sent by pumping to 10 multicenter combustor of cement kiln head and spray into cement kiln 11 and forges
It heats up water mud, and the input end of the transfer passage between holding vessel 7 and cement kiln head 10 is connected with steam companions 8, outlet end connects
It being connected to compressed air hose 9, the supply of tracing steam in steam companions 8, it is ensured that the temperature of oil phase liquid maintains burning point,
After being mixed in favor of oil phase liquid with compressed air can in cement kiln head 10 full combustion.
Embodiment 3: when the industrial hazard waste is semisolid greasy filth, it includes the following steps:
(1) heat: greasy filth is first delivered to greasy filth and receives storehouse 1, and receives electric heating in storehouse 1 in greasy filth, and greasy filth receives the outside in storehouse 1
It is provided with electric heating layer, the temperature that greasy filth receives 1 inner cavity of storehouse maintains 68 DEG C, then, greasy filth is received the greasy filth in storehouse 1 through spiral shell
Rotation feeder 2 is delivered to disc dryer 3 and is heated to 100 DEG C, keeps material flowable；
(2) separate: the greasy filth after heating to disc dryer 3 is delivered to decanter centrifuge 5 by plunger pump 4 and separates mud extraction phase
Solid and oil phase liquid；
(3) grinding, enter kiln:
The mud phase solid colloid mill 6 isolated in step (2) is broken to be milled to raw material fineness, and specifically, mud phase solid is can not
It when firing solid, is broken in colloid mill 6 and is milled to raw material fineness≤20 μm, screen over-size 18%-21%, mud phase solid is flammable solid
When, it is broken in colloid mill and is milled to raw material fineness≤1.5 μm, screen over-size 18%-21%；Material after broken mill passes through plunger pump 4 again
Dore furnace 13 is delivered to as cement raw material；
The oil phase liquid isolated in step (2) enters holding vessel 7 as alternative fuel, then is delivered in cement kiln 11 and calcines water
Mud, the preferably oil phase liquid in holding vessel 7 are sent by pumping to 10 multicenter combustor of cement kiln head and spray into cement kiln 11 and forges
It heats up water mud, and the input end of the transfer passage between holding vessel 7 and cement kiln head 10 is connected with steam companions 8, outlet end connects
It being connected to compressed air hose 9, the supply of tracing steam in steam companions 8, it is ensured that the temperature of oil phase liquid maintains burning point,
After being mixed in favor of oil phase liquid with compressed air can in cement kiln head 10 full combustion.
Embodiment 4: when the industrial hazard waste is semisolid greasy filth, it includes the following steps:
(1) heat: greasy filth is first delivered to greasy filth and receives storehouse 1, and receives electric heating in storehouse 1 in greasy filth, and greasy filth receives the outside in storehouse 1
It is provided with electric heating layer, the temperature that greasy filth receives 1 inner cavity of storehouse maintains 62 DEG C, then, greasy filth is received the greasy filth in storehouse 1 through spiral shell
Rotation feeder 2 is delivered to disc dryer 3 and is heated to 110 DEG C, keeps material flowable；
(2) separate: the greasy filth after heating to disc dryer 3 is delivered to decanter centrifuge 5 by plunger pump 4 and separates mud extraction phase
Solid and oil phase liquid；
(3) grinding, enter kiln:
The mud phase solid colloid mill 6 isolated in step (2) is broken to be milled to raw material fineness, and specifically, mud phase solid is can not
It when firing solid, is broken in colloid mill 6 and is milled to raw material fineness≤20 μm, screen over-size 18%-21%, mud phase solid is flammable solid
When, it is broken in colloid mill and is milled to raw material fineness≤1.5 μm, screen over-size 18%-21%；Material after broken mill passes through plunger pump 4 again
Dore furnace 13 is delivered to as cement raw material；
The oil phase liquid isolated in step (2) enters holding vessel 7 as alternative fuel, then is delivered in cement kiln 11 and calcines water
Mud, the preferably oil phase liquid in holding vessel 7 are sent by pumping to 10 multicenter combustor of cement kiln head and spray into cement kiln 11 and forges
It heats up water mud, and the input end of the transfer passage between holding vessel 7 and cement kiln head 10 is connected with steam companions 8, outlet end connects
It being connected to compressed air hose 9, the supply of tracing steam in steam companions 8, it is ensured that the temperature of oil phase liquid maintains burning point,
After being mixed in favor of oil phase liquid with compressed air can in cement kiln head 10 full combustion.
| Greasy filth temperature | Less than 70 DEG C | Equal to 120 DEG C | Equal to 100 DEG C | Higher than 120 DEG C |
| Greasy filth performance | Flow of Goods and Materials separation is poor | Flow separation is good, is conducive to oil, the mud separation of next step | There is sufficient mobile performance, it is more safely controllable | There is security risk |
Table 1: the contrast table of the temperature of greasy filth and greasy filth performance in disc dryer.
Table 2: the contrast table of raw material fineness and its performance after the broken mill of mud phase solid.
(2) when the industrial hazard waste is solid:
(1) classification of Raymond mill 19 grinding: solid danger of the Raymond mill 19 to the solid hazardous waste for having calorific value and without calorific value
Dangerous waste carries out separate compiling, and the granular material after grinding is delivered to different finished product bins respectively；
(2) measure: the granular material in finished product bin 24 is delivered to weigher and is measured；
(3) enter firer's skill: after metering, having the solid hazardous waste of calorific value as alternative fuel, be transported in cement kiln 11
Calcining cement；The solid hazardous waste of no calorific value is delivered to dore furnace 13 as cement raw material.
Preferably, when the industrial hazard waste is solid, it includes the following steps:
(1) Raymond mill 19 classify grinding: the solid hazardous waste without volatile organic matter by transport device be transported into
Feed bin 14, the outlet end of feeding warehouse 14 are equipped with rod valve 15, and solid hazardous waste is discharged and leads to from the outlet of feeding warehouse 14
It crosses belt feeder 16 and is transported to feeding bin 17, the surface of 18 input end of plate-type feeding, material is arranged in the outlet of feeding bin 17
Raymond mill 19 is fed through plate-type feeding 18, Raymond mill 19 is according to supplied materials to the solid hazardous waste for having calorific value and without fever
The solid hazardous waste of amount carries out separate compiling, can produce heat after having the solid hazardous waste of calorific value to refer to burning
Solid hazardous waste, the solid hazardous waste of no calorific value will not generate the solid hazardous discarded of heat after referring to burning
Object, the granular material after grinding are delivered to different finished product bins 24 respectively；Specifically, Raymond mill 19 connects cyclone separator
22, the material of the discharge port discharge of cyclone separator 22 is delivered in finished product bin 24 by screw conveyor 23, cyclonic separation
The return air inlet of device 22 connect by backwind tube with negative-pressure cyclic blower 20, and the air outlet of negative-pressure cyclic blower 20 passes through two and company
Air hose is connect with the air intake vent of Raymond mill 19 and dust-precipitator 21 respectively, the discharge port discharge of cyclone separator 22 and dust-precipitator 21
Material passes through screw conveyor 23 and is delivered in finished product bin 24；When grinding, material feeds Raymond mill through plate-type feeding 18
19, material, which enters, forms padding layer in mill after mill, which is generated outside centrifugal force (i.e. extruding force) for object by grinding roller rotation
Material pulverizes, i.e., achievees the purpose that powder processed therefrom.After material grinding, wind is blown into the host of Raymond mill 19 by negative-pressure cyclic blower 20
In shell, powder is blown afloat, the sorter above grinding chamber is placed in and is sorted, the excessively thick material of fineness falls into grinding chamber weight again
Mill, the stream with the wind that fineness meets the specification enter cyclone separator 22, are discharged after collection by tube cell, as finished product, and pass through spiral shell
Rotation conveyer 23 is delivered to finished product bin 24.Air quantity backs into negative-pressure cyclic blower 20 by the backwind tube of 22 upper end of cyclone separator,
Wind path is to maintain circulation, and flows under negative pressure state, the air quantity increased portion lease making negative-pressure cyclic blower 20 of circulating air duct
It is discharged with the exhaust piping among 19 host of Raymond mill, and enters dust-precipitator 21, the material come is purified in dust-precipitator 21 through spiral shell
Rotation conveyer 23 is delivered in finished product bin 24；
(2) measure: the granular material in finished product bin 24 is delivered to rotor weigher 27 and is measured；
(3) enter firer's skill: after metering, having the solid hazardous waste of calorific value as alternative fuel, be transported to cement through air pump
Calcining cement in kiln 11；The solid hazardous waste of no calorific value is delivered to dore furnace 13 as cement raw material through air pump.
The pretreating process of the cement kiln synergic processing industrial hazard waste combines new dry cement technology feature
And hazardous waste component and chemical analysis feature, by waste sorting, pretreatment, grinding, and utilize existing new dry process
Quality coal in cement kiln systems is burned, and lime-ash incorporates in clinker, and pernicious gas decomposes at high temperature, both takes full advantage of waste
In combustible component calorific value calcination of chamotte, and be utilized the available inorganic component in waste lime-ash production clinker, simultaneously
It solves the problems such as common incinerator noxious gas emission pollution, lime-ash secondary treatment, there is good environmental benefit, be one
It is suitble to the new technologies of China's actual conditions, adaptable to rotary kiln, treating capacity is big, and technology is simple and reliable, rationally may be used
Row, waste 100% are utilized.Combustible calorific value maximum is up to 6000 kilocalories, minimum 3000 kilocalories, almost all in waste
For calcination of cement clinker, the inorganic matter in waste can save raw material resources for cement plant, have good economy of resources, often
Nian Kewei enterprise saves raw material preparation and burning expense, has good Business Economic Benefit.28,800,000 yuan of the technique gross investment,
After this project is gone into operation, preferable economic benefit will be obtained, investing financial internal rate of return (FIRR) after income tax entirely is 63.91%, complete to invest
Static payback time is 2.64, the implementation of the technique by applied for the change unordered heap of hazardous waste or single landfill it is unsound
Status opens up the exemplary role of circular economy new approaches, the pollution to Leachate site caused by mitigation hazardous waste etc. to environment
It is played actively with puzzlement, improvement The Surroundings in Cities health looks caused by resident living and raising people's lives and the general level of the health
Effect.
Using eco-cement industrial treatment hazardous waste than individually establish incineration disposal factory it is time saving, it is laborsaving, save ground, save money.
Operating cost is far below other processing modes.The Road of Cyclic Economy is being walked, the today built a conservation-minded society, is utilizing hazardous waste
A new bright spot in industry development will be become by producing eco-cement, and good social benefit and economic effect can be brought to society
Benefit.Project operation success will play good exemplary role to hazardous waste processing.In terms of handling hazardous waste, this technology
Compared with traditional hazardous waste treatment process, there is incomparable advantage, which meets the national industry energy, environmentally friendly political affairs
Plan also complies with the demand of urban development and cement new technology, and social benefit and economic benefit are obvious, saves a large amount of soil money
Source, energy-saving and emission-reduction, sufficiently the recycling energy, reduces a large amount of energy waste.
Technical characteristic in the present invention without description can be achieved by the prior art, and details are not described herein.The present invention is simultaneously
It is not limited only to above-mentioned specific embodiment, variation that those of ordinary skill in the art make within the essential scope of the present invention changes
Type, addition or replacement, also should belong to protection scope of the present invention.
Claims (9)
1. a kind of pretreating process of cement kiln synergic processing industrial hazard waste, it is characterized in that: the industrial hazard is discarded
Object is semisolid greasy filth and/or solid waste, the pretreating process packet of the cement kiln synergic processing industrial hazard waste
Include following step:
(1) when the industrial hazard waste is semisolid greasy filth:
(1) heat: greasy filth enters disc dryer, and to be heated to material flowable；
(2) it separates: separating mud extraction phase solid and oil phase liquid with centrifuge；
(3) grinding, enter kiln: the mud phase solid colloid isolated in step (2) is milled to raw material fineness, then is delivered to decomposition
Furnace；The oil phase liquid isolated in step (2) enters holding vessel as alternative fuel, then is delivered to calcining cement in cement kiln；
(2) when the industrial hazard waste is solid:
(1) Raymond mill classification grinding: Raymond mill is solid hazardous useless to the solid hazardous waste for having calorific value and without calorific value
Gurry carries out separate compiling, and the granular material after grinding is delivered to different finished product bins respectively；
(2) measure: the granular material in finished product bin is delivered to weigher and is measured；
(3) enter firer's skill: after metering, having the solid hazardous waste of calorific value as alternative fuel, be transported in cement kiln and forge
It heats up water mud；The solid hazardous waste of no calorific value is delivered to dore furnace as cement raw material.
2. the pretreating process of cement kiln synergic processing industrial hazard waste according to claim 1, it is characterized in that: working as
When the industrial hazard waste is semisolid greasy filth, it includes the following steps:
(1) heat: greasy filth is first delivered to greasy filth and receives storehouse, and receives electric heating in storehouse in greasy filth, and greasy filth receives the temperature of storehouse inner cavity
Degree maintains between 60 DEG C -70 DEG C, then, the greasy filth in greasy filth reception storehouse is delivered to disc dryer through screw feeder and is added
Heat keeps material flowable to 70 DEG C -120 DEG C；
(2) separate: the greasy filth after heating to disc dryer is delivered to decanter centrifuge by plunger pump and separates mud extraction mutually admittedly
Body and oil phase liquid；
(3) grinding, enter kiln: the mud phase solid colloid isolated in step (2) is milled to raw material fineness, then passes through plunger pump
Dore furnace is delivered to as cement raw material；The oil phase liquid isolated in step (2) enters holding vessel as alternative fuel, then defeated
It send to calcining cement in cement kiln.
3. the pretreating process of cement kiln synergic processing industrial hazard waste according to claim 2, it is characterized in that: institute
It states in step (3), when mud phase solid is non-combustible solid, is broken in colloid mill and be milled to raw material fineness≤20 μm, screen over-size is
18%-21% when mud phase solid is flammable solid, breaks in colloid mill and is milled to raw material fineness≤1.5 μm, screen over-size 18%-21%.
4. the pretreating process of cement kiln synergic processing industrial hazard waste according to claim 2 or 3, feature
Be: in the step (1), greasy filth is heated to 80 DEG C, 90 DEG C, 95 DEG C, 100 DEG C or 110 DEG C by disc dryer.
5. the pretreating process of cement kiln synergic processing industrial hazard waste according to claim 4, it is characterized in that: institute
It states in step (1), greasy filth receives and is provided with electric heating layer on the outside of storehouse, and the temperature that greasy filth receives storehouse inner cavity maintains 62 DEG C, 65
DEG C or 68 DEG C.
6. the pretreating process of cement kiln synergic processing industrial hazard waste according to claim 2 or 3, feature
Be: in the step (3), the oil phase liquid in holding vessel is sent by pumping to cement kiln head multicenter combustor and sprays into cement kiln
Interior calcining cement, and the input end of the transfer passage between holding vessel and cement kiln head is connected with steam companions, outlet end connects
It is connected to compressed air hose.
7. the pretreating process of cement kiln synergic processing industrial hazard waste according to claim 1, it is characterized in that: working as
When the industrial hazard waste is solid, it includes the following steps:
(1) Raymond mill is classified grinding: material feeds Raymond mill through plate-type feeding, and Raymond mill is to there is the solid hazardous useless of calorific value
Gurry and solid hazardous waste without calorific value carry out separate compiling, the granular material after grinding be delivered to respectively it is different at
Product feed bin；
(2) measure: the granular material in finished product bin is delivered to rotor weigher and is measured；
(3) enter firer's skill: after metering, having the solid hazardous waste of calorific value as alternative fuel, be transported in cement kiln and forge
It heats up water mud；The solid hazardous waste of no calorific value is delivered to dore furnace as cement raw material.
8. the pretreating process of cement kiln synergic processing industrial hazard waste according to claim 7, it is characterized in that: institute
It states in step (1), Raymond mill connects cyclone separator, and the material of the discharge port discharge of cyclone separator is defeated by screw conveyor
It send to finished product bin, the return air inlet of cyclone separator is connect by backwind tube with negative-pressure cyclic blower, negative-pressure cyclic blower
Air outlet is by two and air hose even connect with the air intake vent of Raymond mill and dust-precipitator respectively, cyclone separator and dust-precipitator out
The material of material mouth discharge passes through screw conveyor and is delivered in finished product bin.
9. the pretreating process of cement kiln synergic processing industrial hazard waste according to claim 8, it is characterized in that: institute
It states in step (1), the solid hazardous waste without volatile organic matter is transported to feeding warehouse by transport device, feeding warehouse
Outlet end is equipped with rod valve, and solid hazardous waste, which is discharged from the outlet of feeding warehouse and passes through belt feeder, is transported to feeding bin,
The surface of plate-type feeding input end is arranged in the outlet of feeding bin.
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| CN110195868A (en) * | 2019-07-02 | 2019-09-03 | 山东东华水泥有限公司 | The device and its process of leather sludge and waste are disposed using cement kiln |
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| CN111825357A (en) * | 2020-07-22 | 2020-10-27 | 长沙紫宸科技开发有限公司 | Method for cooperatively treating solid hazardous waste in cement kiln through high-temperature alkalization treatment |
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| CN113333440A (en) * | 2021-06-17 | 2021-09-03 | 山东清洁环保重工科技有限公司 | Dangerous waste mine restoration production line |
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| CN114453113A (en) * | 2020-11-10 | 2022-05-10 | 四川隆盛欣建筑工程有限公司 | Preparation system and preparation method of alternative fuel for cement kiln |
| CN116590067A (en) * | 2023-05-26 | 2023-08-15 | 镇江普境新能源科技有限公司 | Preparation system and preparation method of hazardous waste disposal derived fuel |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110171935A (en) * | 2019-05-23 | 2019-08-27 | 惠州市环境科学研究所 | A kind of method of cement kiln synergic processing footwear material leftover pieces |
| CN110195868A (en) * | 2019-07-02 | 2019-09-03 | 山东东华水泥有限公司 | The device and its process of leather sludge and waste are disposed using cement kiln |
| CN110293117A (en) * | 2019-08-09 | 2019-10-01 | 黄石市四棵水泥厂 | The recycling and reusing device and technology of a kind of industrial solid waste in rotary kiln |
| CN111825357A (en) * | 2020-07-22 | 2020-10-27 | 长沙紫宸科技开发有限公司 | Method for cooperatively treating solid hazardous waste in cement kiln through high-temperature alkalization treatment |
| CN114453113A (en) * | 2020-11-10 | 2022-05-10 | 四川隆盛欣建筑工程有限公司 | Preparation system and preparation method of alternative fuel for cement kiln |
| CN112944361A (en) * | 2021-01-29 | 2021-06-11 | 吉林化工学院 | Process system for cooperatively treating oil sludge by using cement kiln |
| CN113333440A (en) * | 2021-06-17 | 2021-09-03 | 山东清洁环保重工科技有限公司 | Dangerous waste mine restoration production line |
| CN114017778A (en) * | 2021-09-28 | 2022-02-08 | 安徽华塑股份有限公司 | Treatment method for treating park solid waste by cooperation of cement kiln |
| CN116590067A (en) * | 2023-05-26 | 2023-08-15 | 镇江普境新能源科技有限公司 | Preparation system and preparation method of hazardous waste disposal derived fuel |
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