CN209481566U - A kind of process unit of oily sediment waste plastics pyrolysis - Google Patents
A kind of process unit of oily sediment waste plastics pyrolysis Download PDFInfo
- Publication number
- CN209481566U CN209481566U CN201920081374.9U CN201920081374U CN209481566U CN 209481566 U CN209481566 U CN 209481566U CN 201920081374 U CN201920081374 U CN 201920081374U CN 209481566 U CN209481566 U CN 209481566U
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- pyrolysis
- pyrolysis oven
- discharge port
- waste plastics
- feed inlet
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- 238000000197 pyrolysis Methods 0.000 title claims abstract description 125
- 239000004033 plastic Substances 0.000 title claims abstract description 73
- 229920003023 plastic Polymers 0.000 title claims abstract description 73
- 239000002699 waste material Substances 0.000 title claims abstract description 64
- 239000013049 sediment Substances 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000008569 process Effects 0.000 title claims abstract description 15
- 238000003860 storage Methods 0.000 claims abstract description 59
- 238000010438 heat treatment Methods 0.000 claims abstract description 51
- 239000000463 material Substances 0.000 claims description 9
- 230000007723 transport mechanism Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 40
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 14
- 229910052799 carbon Inorganic materials 0.000 description 14
- 239000000446 fuel Substances 0.000 description 13
- 239000000203 mixture Substances 0.000 description 12
- 239000008246 gaseous mixture Substances 0.000 description 11
- 239000007787 solid Substances 0.000 description 11
- 239000003921 oil Substances 0.000 description 9
- 238000012545 processing Methods 0.000 description 9
- 238000002485 combustion reaction Methods 0.000 description 7
- 229910001385 heavy metal Inorganic materials 0.000 description 7
- 239000007788 liquid Substances 0.000 description 7
- 239000003345 natural gas Substances 0.000 description 7
- 239000000470 constituent Substances 0.000 description 6
- 239000002994 raw material Substances 0.000 description 6
- 238000004064 recycling Methods 0.000 description 6
- 238000000926 separation method Methods 0.000 description 6
- 239000002283 diesel fuel Substances 0.000 description 5
- 239000000428 dust Substances 0.000 description 5
- 229930195733 hydrocarbon Natural products 0.000 description 5
- 150000002430 hydrocarbons Chemical class 0.000 description 5
- 238000005406 washing Methods 0.000 description 5
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 150000001335 aliphatic alkanes Chemical class 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 210000000952 spleen Anatomy 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241000790917 Dioxys <bee> Species 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 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
- 239000003129 oil well Substances 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000009671 shengli Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000002798 spectrophotometry method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000011269 tar Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000004056 waste incineration Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- 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
- Y02P20/141—Feedstock
- Y02P20/143—Feedstock the feedstock being recycled material, e.g. plastics
Abstract
The utility model discloses a kind of process unit of oily sediment waste plastics pyrolysis, including pulverizer, storage bin, screw conveyor, pyrolysis oven, separating-purifying tower, condenser, storage tank, flashback preventors；The discharge port of pulverizer is connected with the feed inlet of storage bin, the discharge port of storage bin is connected by screw conveyor with pyrolysis furnace feed inlet, pyrolysis oven lower part is equipped with pyrolysis oven discharge port, exhaust outlet is connect with the feed inlet of separating-purifying tower above pyrolysis oven, the connection of the feed inlet of separating-purifying tower bottom discharge port and pulverizer, separating-purifying tower upper air vent is connected with condenser air inlet, condenser gas outlet is connected with flashback preventor air inlet, outlet is connected with reservoir inlet under condenser, is arranged with heating furnace outside rotary kiln body.The utility model has simple production process, and manufacturing cost is low, and output object is in stable condition, without secondary pollution, is formed and is handled the thorough innoxious closed circulation of oily sediment waste plastics.
Description
Technical field
It is the utility model relates to a kind of process unit of oily sediment waste plastics pyrolysis, in particular to a kind of to utilize pyrolysis work
Skill and device realize the minimizing of oily sediment waste plastics that oil field operation plant stand generates, innoxious, recycling.
Background technique
As plastic products sales volume constantly increases, waste plastic is increasing.China's waste plastic is mainly plastics at present
Film, plastic wire and knitting, foamed plastics, plastic package box and container, daily plastic product, polybag and agricultural mulching
Deng.In addition, China's automobile, electronic apparatus and household electrical appliances, which are matched, applies plastics more than 2,000,000 tons, at the weight of waste plastics after scrapping
Want one of source.If the storage of these waste plastics, transport, processing wait the processed application of waste plastic raw material and post-processing not
It is proper, will certainly welding, endanger the common people health.The raising of global crude oil price, the regeneration of waste plastic are also mentioned
Height has arrived top priority.The recycling and reusing of waste plastic is generallyd use by Modernized Chemical Enterprises.But it is produced when the maintenance of oil field
Utility value has been not present with current technology condition in the waste plastic of raw oily sediment.How to handle and is concerned.It is domestic
Centralized burning, high-temperature process etc. are generally adopted outside.But these methods have at high cost, and some easily causes secondary pollution, and some still needs to
It is technically further perfect.Thoroughly to solve its pollution problem.It is innoxious, clean, resource treatment technique will become contain
The inexorable trend of oil sediment Treatment of Waste Plastics technology development.In conjunction with China's national situation, the harmless treatment of economical rationality is developed
Applicable technology is also developing direction important from now on.
Utility model content
The utility model provides a kind of process unit of oily sediment waste plastics pyrolysis, and its object is to solve technique mistake
Journey complexity, manufacturing cost height, output object state labile, there are technical problems such as secondary pollution, safety differences, realize oil-containing
Innoxious, the recycling of silt Treatment of Waste Plastics.
The utility model uses following technical scheme:
The utility model a kind of oily sediment waste plastics pyrolysis process unit, including pulverizer (1), storage bin (2),
Screw conveyor (3), pyrolysis oven (5), separating-purifying tower (8), condenser (9), storage tank (10), flashback preventor (12),
The discharge port of the pulverizer (1) is connected with the feed inlet of the storage bin (2)；Storage bin (2) the lower end peace
Equipped with the screw conveyor (3)；
Storage bin (2) discharge port is connected by the screw conveyor (3) with the feed inlet of the pyrolysis oven (5)
It connects；
Pyrolysis oven (5) lower part is equipped with pyrolysis oven discharge port (11)；Exhaust outlet above the pyrolysis oven (5) with it is described
The feed inlet of separating-purifying tower (8) is connected；
Separating-purifying tower (8) bottom discharge port is connected with the feed inlet of the pulverizer (1), the separating-purifying
The exhaust outlet on tower (8) top is connected with the condenser (9) air inlet；
The gas outlet of the condenser (9) is connected with the flashback preventor (12) air inlet, under the condenser (9)
Outlet is connected with the storage tank (10) entrance；
The pyrolysis oven (5) is the rotary kiln of external heating type, and heating furnace (7) are arranged with outside the rotary kiln body；
Heating furnace (7) bottom is equipped with multiple burners (13)；
The burner (13) is the cell burner used for the heating furnace (7)；
The pyrolysis gas air inlet of the burner (13) respectively with the gas outlet of the flashback preventor (12), natural gas into
Mouth (14) is connected；The Imported gas (14) is equipped with valve；
The top of the heating furnace (7) is equipped with heating furnace air exit (6).
Storage bin (2) discharge port is connected to screw conveyor (3) feed inlet, screw conveyor (3) discharging
Mouth is connected to the feed inlet of the pyrolysis oven (5), and the smashed oily sediment waste plastics of storage is maintained in the storage bin (2)
(15) feed inlet that material seals the pyrolysis oven (5) prevents air from entering.
The screw conveyor (3) is closed transport mechanism.
A kind of oily sediment waste plastics pyrolytic process method of the utility model, comprising the following steps:
(1) it crushes: the oily sediment waste plastics (15) being delivered in the pulverizer (1) and is crushed, is crushed to
Partial size is 20mm hereinafter, again conveying the smashed oily sediment waste plastics (15) through the pulverizer (1) lower discharge port
To in the storage bin (2), the useless modeling of the smashed oily sediment of pulverizer (1) is stored by the storage bin (2)
Expect (15)；
(2) it is pyrolyzed: the oily sediment waste plastics (15) in storage bin (2) described in step (1) is passed through into the spiral shell
Rotation conveyer (3) closing, which is delivered in the pyrolysis oven (5), to be pyrolyzed, and the furnace body outer cover of the pyrolysis oven (5) is equipped with institute
It states heating furnace (7), it is 400 DEG C~700 DEG C that the heating furnace (7), which maintains the in-furnace temperature of the pyrolysis oven (5),；The oil-containing
It is pyrolyzed in the state of high temperature anaerobic of the silt waste plastics (15) in the pyrolysis oven (5), primary product is gaseous state mixing
The mixture (17) of object and solid carbon, the pyrolysis oven of the mixture (17) of the solid carbon from the pyrolysis oven (5) lower part
Outside discharge port (11) discharger, the gaseous mixture is discharged into described point from the exhaust outlet above the pyrolysis oven (5)
From in purifying column (8)；
(3) it separates: by the gaseous mixture generated in pyrolysis oven (5) described in step (2) in the separating-purifying
Washing separation is carried out in tower (8), the gaseous state light component that separating-purifying tower (8) tower top is isolated passes through the condenser (9)
Condensation rear portion is transformed into liquid and enters in the storage tank (10), condensed a part of gas warp in the condenser (9)
The flashback preventor (12) is passed through in the burner (13) of the heating furnace (7) as fuel, is as fuel combustion
Pyrolysis oven (5) heating, the solid-state heavy constituent that separating-purifying tower (8) tower bottom is isolated are delivered to the described of step (1)
Crush with the oily sediment waste plastics (15) in pulverizer (1) and continues the circular treatment in this system.
The gaseous mixture of pyrolysis oven (5) output described in the step (2) mainly contains vapor, the heat containing hydro carbons
It vents one's spleen, tar and dust；The mixture of the solid carbon of pyrolysis oven (5) output mainly contains the heavy metal being cured；It is described
The gaseous state light component that separating-purifying tower (8) tower top described in step (3) are isolated includes vapor, pyrolysis gas；Described point
The solid-state heavy constituent isolated from purifying column (8) tower bottom includes tar, residue；Condenser (9) condensed liquid is
The primary naphtha of C6~C22 is spare into storage in the storage tank (10) as the primary raw material of petrol and diesel oil；The condenser
(9) it is the pyrolysis oven (5) heating that the gas being discharged, which contains a small amount of alkane pyrolysis gas as fuel combustion,.
The advantages of the utility model, is as follows:
1, there is simple production process, manufacturing cost is low, and output object is in stable condition, without secondary pollution；The utility model is whole
A system constitutes closed circulating treating system, while to the processing of oily sediment waste plastics Non-oxygen pyrolytic, forms oily sediment
The closed circulation processing system of waste plastics pyrolysis processing tail gas, by tail gas separation purification, condensation, closed circuit burning, recycling
Using several steps, the thorough harmless treatment to oily sediment waste plastics is realized, and saves the burning cost of pyrolysis oven.
2, innoxious, the recycling of oily sediment Treatment of Waste Plastics are realized.
Detailed description of the invention:
Fig. 1 is the process unit schematic diagram of the utility model oily sediment waste plastics pyrolysis；
Wherein, 1- pulverizer, 2- storage bin, 3- screw conveyor, 5- pyrolysis oven, 6- heating furnace air exit, 7- heating
Furnace, 8- separating-purifying tower, 9- condenser, 10- storage tank, 11- pyrolysis oven discharge port, 12- flashback preventor, 13- burner, 14-
Imported gas, 15- oily sediment waste plastics, 16- tail gas, the mixture of 17- solid carbon.
Specific embodiment:
Specific embodiments of the utility model will be further explained with reference to the accompanying drawing, but the utility model and unlimited
In following description:
Shown in Figure 1, the utility model provides a kind of process unit of oily sediment waste plastics pyrolysis, including crushes
Machine 1, storage bin 2, screw conveyor 3, pyrolysis oven 5, separating-purifying tower 8, condenser 9, storage tank 10, flashback preventor 12,
The discharge port of the pulverizer 1 is connected with the feed inlet of the storage bin 2；2 lower end of the storage bin installation is
State screw conveyor 3；
2 discharge port of storage bin is connected by the screw conveyor 3 with the feed inlet of the pyrolysis oven 5；
5 lower part of pyrolysis oven is equipped with pyrolysis oven discharge port 11；The exhaust outlet of 5 top of pyrolysis oven is mentioned with described separate
The feed inlet of pure tower 8 is connected；
8 bottom discharge port of separating-purifying tower is connected with the feed inlet of the pulverizer 1, the separating-purifying tower 8
The exhaust outlet on top is connected with 9 air inlet of condenser；
The gas outlet of the condenser 9 is connected with 12 air inlet of flashback preventor, and the condenser 9 is lower to be exported
It is connected with 10 entrance of storage tank；
The pyrolysis oven 5 is the rotary kiln of external heating type, is arranged with heating furnace 7 outside the rotary kiln body；
7 bottom of heating furnace is equipped with multiple burners 13；
The burner 13 is the cell burner used for the heating furnace 7；
The pyrolysis gas air inlet of the burner 13 respectively with the gas outlet of the flashback preventor 12, Imported gas 14
It is connected；The Imported gas 14 is equipped with valve；
The top of the heating furnace 7 is equipped with heating furnace air exit 6.
2 discharge port of storage bin is connected to 3 feed inlet of screw conveyor, 3 discharge port of screw conveyor and institute
The feed inlet connection of pyrolysis oven 5 is stated, is maintained in the storage bin 2 described in smashed 15 material of the oily sediment waste plastics envelope of storage
The feed inlet of pyrolysis oven 5 prevents air from entering.
The screw conveyor 3 is closed transport mechanism.The pyrolysis oven is by smashed in the storage bin 2
15 material of oily sediment waste plastics encloses mouth, is in high temperature anaerobic pyrolysis processing state always inside pyrolysis oven.
The pyrolysis oven is external heating type pyrolysis oven, and furnace body outer cover is equipped with heating furnace.The burner is for adding
The cell burner that hot stove uses.
It has passed through one by separating-purifying from the gaseous mixture that the exhaust outlet of top is discharged after the pyrolysis oven pyrolysis
Tower 8, the closed harmless treatment for the closed circuit circulatory system that condenser 9, storage tank 10, flashback preventor 12, burner 13 form.
In above-mentioned technical proposal, the pulverizer, it is for by oily sediment waste plastics and mixed other big
Block crushing material, so as to pyrolysis oven more good berth.
In above-mentioned technical proposal, the screw conveyor, it is the oily sediment waste plastics after conveying crushing, together
When play the role of sealing, to prevent air from entering pyrolysis oven.
In above-mentioned technical proposal, the storage bin, it is for storing smashed oily sediment waste plastics, to oil-containing
Silt waste plastics plays the role of a buffering and material envelope before entering external heating type pyrolysis oven.
In above-mentioned technical proposal, the pyrolysis oven is external heating type pyrolysis oven, it is by externally heated oven and pyrolysis oven structure
At.Its effect is to be pyrolyzed smashed oily sediment waste plastics.The fuel of externally heated oven is natural gas or fuel oil, is passed through
Burner heats pyrolysis oven.When pyrolysis in-furnace temperature reaches 400 DEG C or more, by the useless modeling of the smashed oily sediment of storage bin
Material is sent into pyrolysis oven by the screw conveyor of lower section and is pyrolyzed, and is in oxygen-free environment in pyrolysis oven always.Oily sediment
The organic principle of waste plastics is pyrolyzed under the oxygen barrier state of high temperature, and a part generates gas, by purification, as fuel for heating furnace
It uses.Another part generates the mixture of stable carbon, and the heavy metal in oily sediment waste plastics is sintered wherein, unsuitable quilt
It is precipitated.The product can be used as construction material use, eliminate secondary pollution, realize minimizing, innoxious, recycling.
In above-mentioned technical proposal, the heating furnace, it is arranged for the external heating for pyrolysis oven, due to containing
The pyrolysis of oil sediment waste plastics is realized under anaerobic state, so carrying out external heating to pyrolysis oven, while being also acted as to heat
It vents one's spleen the effect purified, eliminates pollution, save the energy.
In above-mentioned technical proposal, the separating-purifying tower, it is by oily sediment waste plastics in external heating type pyrolysis oven
Gas, dust and the tar of generation carry out washing separation, and the gas after washing is used as fuel for heating furnace；The weight isolated
Group is distributed to pulverizer and crushes jointly with new oily sediment waste plastics, carries out secondary pyrolysis.
In above-mentioned technical proposal, the burner, it is a kind of cell burner used for heating furnace；It can be with
Natural gas and pyrolysis gas is used alone, natural gas and pyrolysis gas can also be used simultaneously；Natural gas when device heats up, after charging
After having pyrolysis gas generation, natural gas and pyrolysis gas use simultaneously；When pyrolysis gas is enough measured, natural gas is closed, pyrolysis is used alone
Gas.
A kind of process of oily sediment waste plastics pyrolysis processing provided by the utility model, process is referring to Fig. 1 institute
Show, comprising the following steps:
(1) it crushes: the oily sediment waste plastics 15 being delivered in the pulverizer 1 and is crushed, partial size is crushed to
For 20mm hereinafter, the smashed oily sediment waste plastics 15 is delivered to the storage through 1 lower discharge port of pulverizer again
In feed bin 2, the smashed oily sediment waste plastics 15 of the pulverizer 1 is stored by the storage bin 2；
(2) it is pyrolyzed: the oily sediment waste plastics 15 in storage bin 2 described in step (1) is passed through into the spiral transferring
It send the closing of machine 3 to be delivered in the pyrolysis oven 5 to be pyrolyzed, the furnace body outer cover of the pyrolysis oven 5 is equipped with the heating furnace 7,
It is 400 DEG C~700 DEG C that the heating furnace 7, which maintains the in-furnace temperature of the pyrolysis oven 5,；The oily sediment waste plastics 15 is described
High temperature anaerobic state in pyrolysis oven 5 issues heat solution, and primary product is the mixture 17 of gaseous mixture and solid carbon, described
The mixture 17 of solid carbon is outside 11 discharger of pyrolysis oven discharge port of 5 lower part of pyrolysis oven, the gaseous state mixing
Object is discharged into the separating-purifying tower 8 from the exhaust outlet above the pyrolysis oven 5；
(3) it separates: by the gaseous mixture generated in pyrolysis oven 5 described in step (2) in the separating-purifying tower 8
In carry out washing separation, the gaseous state light component that 8 tower top of separating-purifying tower is isolated condenses latter portion by the condenser 9
Point it is transformed into liquid into the storage tank 10, condensed a part of gas is through the flashback preventor in the condenser 9
12 are passed through in the burner 13 of the heating furnace 7 as fuel, are the pyrolysis oven 5 heating as fuel combustion, described
The solid-state heavy constituent that 8 tower bottom of separating-purifying tower is isolated is delivered in the pulverizer 1 of step (1) useless with the oily sediment
Plastics 15, which crush, continues the circular treatment in this system.
The gaseous mixture of 5 output of pyrolysis oven described in the step (2) mainly contains vapor, the pyrolysis containing hydro carbons
Gas, tar and dust；The mixture of the solid carbon of 5 output of pyrolysis oven mainly contains the heavy metal being cured；The step
(3) the gaseous state light component that 8 tower top of separating-purifying tower described in is isolated includes vapor, pyrolysis gas；The separating-purifying
The solid-state heavy constituent that 8 tower bottom of tower is isolated includes tar, residue；9 condensed liquid of condenser is the first of C6~C22
Grade naphtha as petrol and diesel oil primary raw material it is spare enter the storage tank 10 in store；The gas that the condenser 9 is discharged contains
Having a certain amount of alkane pyrolysis gas as fuel combustion is the pyrolysis oven 5 heating.
The primary naphtha that the liquid into the storage tank 10 is C6-C22, the primary raw material as petrol and diesel oil.
Pulverizer described in the utility model, screw conveyor, heating furnace, pyrolysis oven, storage bin, burner, separation mention
Pure tower, condenser, storage tank are common commercial equipment.
The utility model method and apparatus are specifically described below with reference to specific embodiment:
Embodiment 1:
Pulverizer model SDF200-2 used in the embodiment, screw conveyor model SL25-1 heat the type of furnace
It number is SJL05-1, external heating type pyrolysis oven model SRL80-05, storage bin model SC1, separating-purifying tower model
SFT500-4, burner model STAR-500.
The oily sediment waste plastics of processing is to generate in the work of Shengli Oil Field oil well overhaul.Wherein oily sediment waste plastics
The toxic heavy metal copper that contains, zinc, lead, cadmium, nickel, chromium, arsenic, mercury content be respectively 31.9mg/kg, 243mg/kg, < 4mg/
Kg, be not detected, 33.7mg/kg, 71mg/kg, 8.1mg/kg, be not detected, (as shown in table 1) through the utility model following methods into
Row processing: (1) it crushes: the oily sediment waste plastics 15 being delivered in the pulverizer 1 and is crushed, partial size is crushed to
For 20mm hereinafter, the smashed oily sediment waste plastics 15 is delivered to the storage through 1 lower discharge port of pulverizer again
In feed bin 2, the smashed oily sediment waste plastics 15 of the pulverizer 1 is stored by the storage bin 2；
(2) it is pyrolyzed: the oily sediment waste plastics 15 in storage bin 2 described in step (1) is passed through into the spiral transferring
It send 3 model SL25-1 of machine closing to be delivered in the pyrolysis oven 5 to be pyrolyzed, the furnace body outer cover of the pyrolysis oven 5 is equipped with
The heating furnace 7, the heating furnace 7 maintain the pyrolysis oven 5 in-furnace temperature be 400 DEG C~700 DEG C, anaerobic；The oil-containing
High temperature anaerobic state of the silt waste plastics 15 in the pyrolysis oven 5 issues heat solution, and primary product is for gaseous mixture and admittedly
The mixture 17 of state carbon, 11 discharger of pyrolysis oven discharge port of the mixture 17 of the solid carbon from 5 lower part of pyrolysis oven
Outside, the gaseous mixture is discharged into the separating-purifying tower 8 from the exhaust outlet above the pyrolysis oven 5；
(3) it separates: by the gaseous mixture generated in pyrolysis oven 5 described in step (2) in the separating-purifying tower 8
In carry out washing separation, the gaseous state light component that 8 tower top of separating-purifying tower is isolated condenses latter portion by the condenser 9
Point it is transformed into liquid into the storage tank 10, condensed a part of gas is through the flashback preventor in the condenser 9
12 are passed through in the burner 13 of the heating furnace 7 as fuel, are the pyrolysis oven 5 heating as fuel combustion, described
The solid-state heavy constituent that 8 tower bottom of separating-purifying tower is isolated is delivered in the pulverizer 1 of step (1) useless with the oily sediment
Plastics 15, which crush, continues the circular treatment in this system.
The gaseous mixture of 5 output of pyrolysis oven described in the step (2) mainly contains vapor about 20%, contains hydro carbons
Pyrolysis gas about 70%, tar 6% and dust 4%, about the 81% of initial material；The solid carbon of 5 output of pyrolysis oven
The heavy metal that mixture mainly contains carbon granules and is cured, about the 19% of initial material；It separates and mentions described in the step (3)
The gaseous state light component that pure 8 tower top of tower is isolated includes that vapor, pyrolysis gas account for volume to weight ratio 90%；The separating-purifying tower 8
The solid-state heavy constituent that tower bottom is isolated includes that tar, residue account for volume to weight ratio 10%；9 condensed liquid of condenser is C6
The primary naphtha of~C22, accounts for about the 75% of hydrocarbon pyrolysis gas.It is spare into the storage tank 10 as the primary raw material of petrol and diesel oil
Middle storage；C1~C5 gas that the condenser 9 is discharged accounts for about the 24% of hydrocarbon pyrolysis gas, is the pyrolysis as fuel combustion
Furnace 5 heats, and other pernicious gases account for 1%.
The tail gas 16 generated in 7 heating process of heating furnace in step (3) includes nitrogen oxides NOx, sulfur dioxide SO2, dioxy
Change carbon CO2, a small amount of dust, discharged after conventional treatment is up to standard.
Tail gas is detected by " dangerous waste incineration atmosphere pollutants emission standards " DB11/503-2007；The mixing of solid carbon
Object is by " hazardous waste judging standard leaching characteristic identification " GB5085.3-2007 and " the measurement cold atom of solid waste total mercury is inhaled
Receive spectrophotometry " detection of GB/T15555.1-1995, value is as shown in table 1:
Table 1: the effect of the utility model method processing heavy metal
As shown in Table 1, oily sediment waste plastics is handled with the utility model method and device, in oily sediment waste plastics
Heavy metal is cured in the mixture of solid carbon, in stable condition, will not be gone out by elutriation, not generate pollution.In addition, most of turn
The primary naphtha for turning to C6~C22 is spare as the primary raw material of petrol and diesel oil, and small part is the pyrolysis as fuel combustion
Stove heating, the further circular treatment in system of tar, residue, has accomplished the thorough innoxious place to oily sediment waste plastics
Reason.
Above-described embodiment is only the technical conception and technical characteristics for illustrating the utility model, this can not be limited with this
The protection scope of utility model.The equivalent transformation or modification that all essence according to the present utility model is done should all be covered at this
Within the protection scope of utility model.
Claims (3)
1. a kind of process unit of oily sediment waste plastics pyrolysis, including pulverizer (1), storage bin (2), screw conveyor (3),
Pyrolysis oven (5), separating-purifying tower (8), condenser (9), storage tank (10), flashback preventor (12), which is characterized in that
The discharge port of the pulverizer (1) is connected with the feed inlet of the storage bin (2)；Storage bin (2) lower end is equipped with
The screw conveyor (3)；
Storage bin (2) discharge port is connected by the screw conveyor (3) with the feed inlet of the pyrolysis oven (5)；
Pyrolysis oven (5) lower part is equipped with pyrolysis oven discharge port (11)；Exhaust outlet above the pyrolysis oven (5) is separated with described
The feed inlet of purifying column (8) is connected；
Separating-purifying tower (8) bottom discharge port is connected with the feed inlet of the pulverizer (1), the separating-purifying tower
(8) exhaust outlet on top is connected with the condenser (9) air inlet；
The gas outlet of the condenser (9) is connected with the flashback preventor (12) air inlet, exports under the condenser (9)
It is connected with the storage tank (10) entrance；
The pyrolysis oven (5) is the rotary kiln of external heating type, and heating furnace (7) are arranged with outside the rotary kiln body；
Heating furnace (7) bottom is equipped with multiple burners (13)；
The burner (13) is the cell burner used for the heating furnace (7)；
The pyrolysis gas air inlet of the burner (13) respectively with the gas outlet of the flashback preventor (12), Imported gas
(14) it is connected；The Imported gas (14) is equipped with valve；
The top of the heating furnace (7) is equipped with heating furnace air exit (6).
2. a kind of process unit of oily sediment waste plastics pyrolysis as described in claim 1, which is characterized in that the storage bin
(2) discharge port is connected to screw conveyor (3) feed inlet, screw conveyor (3) discharge port and the pyrolysis oven (5)
Feed inlet connection, interior smashed oily sediment waste plastics (15) material of storage that maintains of the storage bin (2) seal the pyrolysis oven
(5) feed inlet prevents air from entering.
3. a kind of process unit of oily sediment waste plastics pyrolysis as claimed in claim 1 or 2, which is characterized in that the spiral shell
Revolving conveyer (3) is closed transport mechanism.
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