CN106635079A - Solid waste RDF treating method - Google Patents
Solid waste RDF treating method Download PDFInfo
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- CN106635079A CN106635079A CN201611177858.0A CN201611177858A CN106635079A CN 106635079 A CN106635079 A CN 106635079A CN 201611177858 A CN201611177858 A CN 201611177858A CN 106635079 A CN106635079 A CN 106635079A
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- 239000002910 solid waste Substances 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000000197 pyrolysis Methods 0.000 claims abstract description 88
- 239000007789 gas Substances 0.000 claims abstract description 65
- 239000003921 oil Substances 0.000 claims abstract description 46
- 239000000295 fuel oil Substances 0.000 claims abstract description 13
- 239000002918 waste heat Substances 0.000 claims abstract description 10
- 239000008247 solid mixture Substances 0.000 claims abstract description 6
- 239000007921 spray Substances 0.000 claims description 18
- 230000008569 process Effects 0.000 claims description 17
- 238000003672 processing method Methods 0.000 claims description 17
- 239000003054 catalyst Substances 0.000 claims description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 239000000428 dust Substances 0.000 claims description 9
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 6
- 239000003513 alkali Substances 0.000 claims description 6
- 150000002148 esters Chemical class 0.000 claims description 6
- 238000000746 purification Methods 0.000 claims description 6
- 230000006698 induction Effects 0.000 claims description 5
- 239000013618 particulate matter Substances 0.000 claims description 5
- 239000002893 slag Substances 0.000 claims description 5
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 claims description 4
- 239000002296 pyrolytic carbon Substances 0.000 claims description 4
- 238000012216 screening Methods 0.000 claims description 4
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000292 calcium oxide Substances 0.000 claims description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 3
- 229910000428 cobalt oxide Inorganic materials 0.000 claims description 3
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical compound [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 claims description 3
- 239000000395 magnesium oxide Substances 0.000 claims description 3
- 238000005194 fractionation Methods 0.000 claims description 2
- 229910000480 nickel oxide Inorganic materials 0.000 claims description 2
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 claims description 2
- 238000012545 processing Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000003915 air pollution Methods 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000004939 coking Methods 0.000 description 4
- 238000009833 condensation Methods 0.000 description 4
- 230000005494 condensation Effects 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000010813 municipal solid waste Substances 0.000 description 3
- 239000005416 organic matter Substances 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 239000002283 diesel fuel Substances 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000013517 stratification Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 206010020741 Hyperpyrexia Diseases 0.000 description 1
- 241000282320 Panthera leo Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010170 biological method Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000004508 fractional distillation Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000003317 industrial substance Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000007348 radical reaction Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000004056 waste incineration Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G1/00—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
- C10G1/002—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal in combination with oil conversion- or refining processes
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/10—Feedstock materials
- C10G2300/1003—Waste materials
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention discloses a solid waste RDF treating method, and relates to the technical field of solid waste processing. In the solid waste RDF treating method, a pyrolysis furnace is used for carrying out pyrolysis on solid waste RDF to generate a pyrolysis solid mixture and pyrolysis oil gas; the pyrolysis oil gas enters a fractionating system and is fractionated into residual oil, heavy oil and light oil through the fractionating system; tail gas generated by the pyrolysis furnace is purified through a tail gas treating system and exhausted, and waste heat is recovered and returned to the pyrolysis furnace. The solid waste RDF treating method has the advantages that pyrolysis oil generated by pyrolysis of the solid waste RDF is classified to produce high-valued fuel oil, and solid waste RDF recycling is achieved. In addition, the waste heat in the tail gas generated by the pyrolysis furnace is recovered and used, the energy use ratio is increased, and the tail gas is exhausted after being purified multiple times and does not cause air pollution.
Description
Technical field
The present invention relates to field of solid waste treating technology, and in particular to a kind of solid waste RDF processing method.
Background technology
As population increases and expanding economy, house refuse and industrial refuse amount increase year by year.Contained plastics in rubbish,
The materials such as fabric, leather, resin, synthetic rubber all cannot be degraded by biological method.Landfill do not only take up a large amount of soils and
There is pollution hidden trouble.Incineration disposal investment is big, and the construction period is long, can also produce substantial amounts of flying dust He bioxin, seriously jeopardizes week
Surrounding environment and resident are healthy.Moreover, waste incineration just has scale effect in big city, and the little county of garbage treatment quantity, township are not
It is adapted to process solid waste using incinerating method.By rubbish it is sorted, mummification obtains RDF is a kind of utilization of waste as resource
Method, however, refuse classification does not thoroughly cause RDF to cannot function as ideal fuels product enters production system, make the utilization of RDF
It is restricted.
Using the thermal instability of organic matter in RDF, the indirectly heat in closed environment resolves into organic matter in RDF
Pyrolysis gas and carbon, condensation is collected pyrolysis gas and obtains fuel oil, it is possible to achieve the energy conversion of RDF.Due to pyrolysis gas it is condensed
Fixed gas also has enough calorific values to meet the energy needed for RDF pyrolytic process, reduces the cost of RDF energy conversion, and does not coagulate
The heat and the retention time of fume high-temperature section that gas burning is produced disclosure satisfy that the condition for eliminating bioxin, pyrolytic process flue gas row
Discharge complete up to standard, so pyrolytic technique is that generally acknowledged RDF is environmentally friendly, efficient energy method for transformation, become in recent years at solid waste
Purchase of property focus of attention.
China's prior art is：After house refuse RDF is sorted out, through high temperature (generally greater than 500 DEG C) pyrolysis gas
Change, pyrolysis gas are used directly as combustion gas, for producing steam or generating.The gas that pyrolysis is produced is difficult to as energy products
Transport processing, and often calorific value is not high, needs to realize that energy is converted using electricity generation system or with gas system, pyrolysis is produced
Slag need brick making system to coordinate could to realize recycling, whole system investment is big, and capacity usage ratio is relatively low, economy
It is poor, build adaptability low.
The content of the invention
It is an object of the invention to provide a kind of solid waste RDF processing method, is deposited with solving or at least mitigating in background technology
At least one at problem.
Catalyst is added in the solid waste RDF processing procedure of the present invention, catalyst not only can significantly reduce pyrolysis temperature
Degree, and can shorten the reaction time, improve production efficiency and oil product yield.
The invention provides a kind of pyrolysis oil gas it is quick, be efficiently fractionated collection technique, while provide it is a kind of solve it is cold
The dust stratification of condenser and the technology of coking problem.Pyrolysis oil gas produces pressure-fired and discharges out of the furnace by pyrolysis oven inside and outside temperature difference, power
Little, flow velocity is slow, during oil product condensation is collected, the component that the boiling point such as tar and semicoke is high, viscosity is big easily separate out and with heat
The trickle carbon powder particle formation coking being mingled with solution oil gas adheres to and pipeline is blocked on condenser and duct wall, not only hinders system
Normal operation, also creates potential safety hazard.The heat of the condensation oil recovery system effectively utilizes pyrolysis of the present invention is straight by oil gas is pyrolyzed
Connect and be fractionated into residual oil, heavy oil and light oil, not only contribute to the processing and utilization of product and put forward value, and efficiently solve pyrolytic gasification
The problem of middle tar blocking pipeline.
Present invention also offers the purification techniques that becomes more meticulous of a kind of pyrolysis oil gas and pyrolysis furnace exhaust gas.Disposition of solid waste
The secondary pollution problem of process is always the focus of public's highest attention, is also the bottle for restricting the development of disposition of solid waste industry
How neck, by technological improvement effective control and reduce the discharge of solid waste RDF disposal process pollutant, is research of technique in the industry
Emphasis.
Present invention also offers a kind of comprehensive utilization of energy technology of pyrolytic process.Solid waste is a kind of low value thing
Material, in general, it is to need to spend high cost to realize environmentally friendly disposal that low value material is disposed, and for pyrolysis, energy consumption is
The cost of disposal process lion's share, improves the capacity usage ratio of pyrolytic process, is to reduce pyrolysis cost most efficient method, has
Help the popularization and application of pyrolytic technique.The present invention is not pyrolysis oven heat supply merely with pyrolysis fixed gas burning, also to being pyrolyzed tail
The waste heat of gas is recycled, and realizes the comprehensive utilization of energy of pyrolytic process.
The technical solution used in the present invention is：A kind of solid waste RDF processing method, heat is carried out using pyrolysis oven to solid waste RDF
Solution, generates pyrolysis solid mixture and pyrolysis oil gas；The pyrolysis oil gas is passed through into fractionating system, will be described using fractionating system
Pyrolysis oil gas fractionation is residual oil, heavy oil and light oil；The tail gas that pyrolysis oven is produced is discharged after exhaust treatment system purified treatment,
Waste heat is recovered sends pyrolysis oven back to.
Preferably, when solid waste RDF is pyrolyzed in pyrolysis oven, catalyst is added, the catalyst includes at least oxygen
Change the one kind in nickel, cobalt oxide, calcium oxide and magnesia.
Preferably, the catalyst accounts for (1-5) ‰ of the solid waste RDF mass.
Preferably, the pyrolysis solid mixture that solid waste RDF is produced after pyrolysis sub-elects heat through screening process
Solution carbon and slag charge.
Preferably, the fractionating system also purifies induction system comprising fixed gas, and the fixed gas purifies induction system bag
Containing one or more water sealed tanks equipped with alkaline water, fixed gas enters again after the purification of the water sealed tank equipped with alkaline water absorbs
Enter pyrolysis oven combustion system, the hot blast for producing that burns is pyrolysis stove heat.
Preferably, the tail gas that the pyrolysis oven is discharged removes particulate matter after recovery waste heat, then through bag-type dust.
Preferably, the tail gas removes sour gas after bag-type dust removes particulate matter into alkali lye spray column.
Preferably, the tail gas removes alkaline matter after alkali lye spray column into acid solution spray column.
Preferably, the tail gas is after acid solution spray column, into ester spray column organics removal.
Preferably, the tail gas is discharged after ester spray column after activated carbon packed column purified treatment.
The beneficial effects of the present invention is：
The solid waste RDF processing method of the present invention solid waste RDF is pyrolyzed the pyrolysis oil classification for producing and is processed, and has produced hyperpyrexia
Value fuel oil, realizes the resource of solid waste RDF.In addition, the waste heat in the tail gas produced to pyrolysis oven is recycled, improve
Energy utilization rate；Tail gas is discharged after multiple purifying, does not result in air pollution.
Description of the drawings
Fig. 1 is the flow chart of the solid waste RDF processing method of one embodiment of the invention.
Specific embodiment
To make purpose, technical scheme and the advantage of present invention enforcement clearer, below in conjunction with the embodiment of the present invention
Accompanying drawing, the technical scheme in the embodiment of the present invention is further described in more detail.In the accompanying drawings, identical from start to finish or class
As label represent same or similar element or the element with same or like function.Described embodiment is the present invention
A part of embodiment, rather than the embodiment of whole.It is exemplary below with reference to the embodiment of Description of Drawings, it is intended to use
It is of the invention in explaining, and be not considered as limiting the invention.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.Under
Face combines accompanying drawing and embodiments of the invention is described in detail.
As shown in figure 1, a kind of solid waste RDF processing method, is pyrolyzed using pyrolysis oven to solid waste RDF, pyrolysis is generated solid
Body mixture and pyrolysis oil gas；The pyrolysis oil gas is passed through into fractionating system, is fractionated the pyrolysis oil gas using fractionating system
For residual oil, heavy oil and light oil；The tail gas that pyrolysis oven is produced is discharged after exhaust treatment system purified treatment, and waste heat is recovered and send
Return pyrolysis oven.
In the present embodiment, when solid waste RDF is pyrolyzed in pyrolysis oven, catalyst is added, the catalyst is included at least
One kind in nickel oxide, cobalt oxide, calcium oxide and magnesia.Catalyst can effectively reduce solid waste RDF pyrolysis reaction temperature, plus
Fast pyrolysis rate, improve production efficiency and oil product yield, can also recycle after the completion of pyrolysis through screening.
In the present embodiment, catalyst accounts for (1-5) ‰ of the solid waste RDF mass.
The pyrolysis solid mixture that solid waste RDF is produced after pyrolysis sub-elects pyrolytic carbon and slag charge through screening process.
Wherein, slag charge includes residual catalyst, and the residual catalyst again returns to pyrolysis oven re-using.
In the present embodiment, accelerate the principle of pyrolysis as follows using catalyst：
RDF is catalyzed pyrolysis mechanism：RDF (chemical formulas：～R-(R)n—R·H2O～)
RDF mummification dehydration phase principles：
RDF pyrolysis initiations form radical reaction：
RDF molecular chain ruptures react：
RDF molecule chain termination reactions：
Rm·+Rn·——→Rm—Rn
Rm·+ROn·——→Rm-(OR)n
ROm·+ROn·——→(RO)m-(OR)n
After the catalyst for preparing is mixed with RDF, convey into pyrolysis oven.In continuous pyrolysis stove, pyrolytic process is main
Experienced mummification section (less than 105 DEG C), warming-up section (105-180 DEG C), pyrolysis chain rupture section (180-350 DEG C) and carbonization section (350-
400 DEG C), the pyrolytic carbon that period produces then is discharged by cooling dreg removing system.Pyrolysis oil gas then enters fractionating system.
Fractionating system immediately pyrolysis oven, is made up of the condensing unit and collecting tank of one or more groups of temperature controllables, wherein
Include residual oil collection system, heavy oil collection system and light oil collection system.Residual oil collection system can first collect more than 350 DEG C
Asphalitine, tar and residual oil, it is to avoid quick condenser dust stratification and coking and blocking pipeline；Heavy oil collection system controls temperature collection
Heavy oil between 200-350 DEG C；Light oil below light oil collection system 200 DEG C of temperature collection of control.Oil product main component is 4-
The aliphatic hydrocarbon and aromatic hydrocarbon of 12 carbon, calorific value is up to 9000-10000Kcal/Kg.
The fractionating system of the present invention is effectively utilized the heat of pyrolysis, will pyrolysis oil gas straight fractional distillation into residual oil, heavy oil with
Light oil, so as to being conducive to the processing and utilization of product and putting forward value；Avoid during oil product condensation is collected, the boiling such as tar and semicoke
The big component of the high, viscosity of point is easily separated out and forms coking with the trickle carbon powder particle that is mingled with pyrolysis oil gas and adheres to condenser
With pipeline is blocked on duct wall, efficiently solve the problems, such as tar blocking pipeline in pyrolytic gasification.
In the present embodiment, fractionating system also purifies induction system comprising fixed gas, and the system is filled comprising one or more
There is the water sealed tank of alkaline water, fixed gas is again introduced into pyrolysis oven burning system after the purification of the water sealed tank equipped with alkaline water absorbs
System, the hot blast for producing that burns is pyrolysis stove heat.On the one hand water sealed tank absorbs the sour gas in fixed gas, extends burner hearth
And the service life of burner, the minimum solid particulate matter that pyrolysis is taken out of on the other hand can also be removed, prevent burner from blocking,
Again while being tempered when being also prevented from gas combustion.
In the present embodiment, the tail gas that pyrolysis oven is discharged removes particulate matter after recovery waste heat through bag-type dust, it
Alkali lye spray column is entered afterwards and removes sour gas, subsequently entered acid solution spray column and remove alkaline matter, enter back into ester spray column and go
Except organic matter, eventually pass and discharged after activated carbon packed column purified treatment.
Pyrolytic carbon calorific value height, fixed carbon content height that process of the present invention is produced, can be used as shaped fuel, carbon black and activated carbon
The raw material of production.The fuel oil calorific value that the present invention is produced is up to 9000-10000Kcal/Kg, is energy density equivalent to petrol and diesel oil
Very high fuel product, is readily transported, processes and sells, and as feedstock oil gasoline, diesel oil and solvent naphtha can also be processed into,
Industrial chemicals can be therefrom extracted, with very high economic benefit.
Pyrolysis heating apparatus burns of the on-condensible gas by pyrolysis oven, the heat of generation is warm from heat supply as pyrolysis system
Source, without outside addition fuel heat supply.
The tail gas that fixed gas is formed after preliminary purification, high-temp combustion sprays, lives through bag-type dust, alkali spray, acid spray, ester
Property charcoal absorption process of refinement mode, the possibility of secondary pollution is prevented to greatest extent so that the discharge of every pollutant
Discharging standards are below, this process program has applied widely, resource degree high, and product economic worth is high, tail gas
The advantage of harmless treatment.
It is last it is to be noted that：Above example only to illustrate technical scheme, rather than a limitation.To the greatest extent
Pipe has been described in detail with reference to the foregoing embodiments to the present invention, it will be understood by those within the art that：It is still
Technical scheme described in foregoing embodiments can be modified, or equivalent is carried out to which part technical characteristic and replaced
Change；And these modifications or replacement, do not make the essence of the essence disengaging various embodiments of the present invention technical scheme of appropriate technical solution
God and scope.
Claims (10)
1. a kind of solid waste RDF processing method, it is characterised in that：Solid waste RDF is pyrolyzed using pyrolysis oven, generates pyrolysis solid
Mixture and pyrolysis oil gas；The pyrolysis oil gas is passed through into fractionating system, is by the pyrolysis oil gas fractionation using fractionating system
Residual oil, heavy oil, light oil；The tail gas that pyrolysis oven is produced is discharged after exhaust treatment system purified treatment, and waste heat is recovered sends back to
Pyrolysis oven.
2. solid waste RDF processing method as claimed in claim 1, it is characterised in that：Solid waste RDF is pyrolyzed in pyrolysis oven
When, catalyst is added, the catalyst is including at least the one kind in nickel oxide, cobalt oxide, calcium oxide and magnesia.
3. solid waste RDF processing method as claimed in claim 2, it is characterised in that：The catalyst accounts for the solid waste RDF mass
(1-5) ‰.
4. solid waste RDF processing method as claimed in claim 3, it is characterised in that：What solid waste RDF was produced after pyrolysis
Pyrolysis solid mixture sub-elects pyrolytic carbon and slag charge through screening process.
5. solid waste RDF processing method as claimed in claim 1, it is characterised in that：The fractionating system is also net comprising fixed gas
Change induction system, comprising one or more water sealed tanks equipped with alkaline water, fixed gas is passed through the fixed gas purification induction system
After the purification of water sealed tank equipped with alkaline water absorbs, pyrolysis oven combustion system is again introduced into, the hot blast for producing that burns adds for pyrolysis oven
Heat.
6. solid waste RDF processing method as claimed in claim 1, it is characterised in that：The tail gas that the pyrolysis oven is discharged is passed through back
After receiving waste heat, then particulate matter is removed through bag-type dust.
7. solid waste RDF processing method as claimed in claim 6, it is characterised in that：The tail gas is through bag-type dust removal
After grain thing, into alkali lye spray column sour gas is removed.
8. solid waste RDF processing method as claimed in claim 7, it is characterised in that：The tail gas enters after alkali lye spray column
Enter acid solution spray column and remove alkaline matter.
9. solid waste RDF processing method as claimed in claim 8, it is characterised in that：The tail gas enters after acid solution spray column
Enter ester spray column organics removal.
10. solid waste RDF processing method as claimed in claim 9, it is characterised in that：The tail gas after ester spray column, Jing
Cross after activated carbon packed column purified treatment and discharge.
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| CN114456832A (en) * | 2022-02-14 | 2022-05-10 | 中国石油大学(华东) | A method for co-pyrolysis of waste synthetic fibers and inferior oil products by hydrogenation |
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