CN106281396B - Waste plastic cracking equipment and method - Google Patents
Waste plastic cracking equipment and method Download PDFInfo
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- CN106281396B CN106281396B CN201610796258.6A CN201610796258A CN106281396B CN 106281396 B CN106281396 B CN 106281396B CN 201610796258 A CN201610796258 A CN 201610796258A CN 106281396 B CN106281396 B CN 106281396B
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- 239000004033 plastic Substances 0.000 title claims abstract description 84
- 229920003023 plastic Polymers 0.000 title claims abstract description 84
- 238000005336 cracking Methods 0.000 title claims abstract description 61
- 239000002699 waste material Substances 0.000 title claims abstract description 43
- 238000006243 chemical reaction Methods 0.000 claims abstract description 132
- 238000010504 bond cleavage reaction Methods 0.000 claims abstract description 58
- 238000004523 catalytic cracking Methods 0.000 claims abstract description 57
- 238000003860 storage Methods 0.000 claims abstract description 19
- 239000007789 gas Substances 0.000 claims description 74
- 239000002283 diesel fuel Substances 0.000 claims description 50
- 239000000463 material Substances 0.000 claims description 25
- 239000003502 gasoline Substances 0.000 claims description 17
- 239000002904 solvent Substances 0.000 claims description 17
- 238000000605 extraction Methods 0.000 claims description 15
- 238000006298 dechlorination reaction Methods 0.000 claims description 12
- 238000002844 melting Methods 0.000 claims description 12
- 239000007787 solid Substances 0.000 claims description 10
- 238000007233 catalytic pyrolysis Methods 0.000 claims description 9
- 239000003054 catalyst Substances 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 6
- 238000000197 pyrolysis Methods 0.000 claims description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N HCl Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 5
- 229910000041 hydrogen chloride Inorganic materials 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 239000007791 liquid phase Substances 0.000 claims description 4
- 238000004227 thermal cracking Methods 0.000 claims description 4
- 238000009835 boiling Methods 0.000 claims description 3
- 230000000875 corresponding Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 238000004880 explosion Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 239000002737 fuel gas Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 3
- 229920002456 HOTAIR Polymers 0.000 claims description 2
- 238000006555 catalytic reaction Methods 0.000 claims description 2
- 238000009833 condensation Methods 0.000 claims description 2
- 230000005494 condensation Effects 0.000 claims description 2
- 230000001351 cycling Effects 0.000 claims description 2
- 230000000382 dechlorinating Effects 0.000 claims description 2
- 239000004615 ingredient Substances 0.000 claims description 2
- PODWXQQNRWNDGD-UHFFFAOYSA-L sodium thiosulfate pentahydrate Chemical compound O.O.O.O.O.[Na+].[Na+].[O-]S([S-])(=O)=O PODWXQQNRWNDGD-UHFFFAOYSA-L 0.000 claims description 2
- 230000014759 maintenance of location Effects 0.000 claims 1
- 238000004939 coking Methods 0.000 abstract description 2
- 238000010924 continuous production Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 23
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reaction Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000002910 solid waste Substances 0.000 description 2
- 230000009089 cytolysis Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000002934 lysing Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J11/00—Recovery or working-up of waste materials
- C08J11/04—Recovery or working-up of waste materials of polymers
- C08J11/10—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Abstract
The present invention provides a kind of waste plastic cracking equipment and method, and waste plastic cracking equipment includes plastic cracking module, product oil rectifying module and fixed gas comprehensive utilization module；The plastic cracking module includes：Heat scission reaction kettle, catalytic cracking reaction kettle, high-temperature pump, the 1st filter and the 2nd filter；The product oil rectifying module includes：Rectifying column, condenser and several storage tanks；The fixed gas comprehensive utilization module includes：Hot-blast stove and high-temperature heat-exchanging.Waste plastic cracking equipment provided by the invention and method have the following advantages：Apparatus of the present invention have the characteristics that continuous production, environmental protection, anti-coking, light oil yield are high, energy-efficient, can be widely used to promote.
Description
Technical field
The invention belongs to fixed-end forces technical fields, and in particular to a kind of waste plastic cracking equipment and method.
Background technology
Solid waste pollution problem has become the waste plastics in global problem, especially solid waste, in natural environment not
Degradable, landfill easily generates secondary pollution again.With the improvement of living standards, the yield of waste plastics is more and more huger, give up
For the effective treating capacity of plastics well below discarded amount, the pollution problem for leading to waste plastics is increasingly severe.
The recovery processing of waste plastics is the best processing mode of current waste plastics.A kind of approach of waste plastics recovery is to carry out again
It is granulated, plastic products is then made again by various techniques；Another way is to carry out cracking made fuel oil.It is split in waste plastics
In terms of solving made fuel oil, existing manufacturing fuels from cracking waste plastics oil device and technique are in the side such as the continuity of production, environmental protection, energy saving
Face also Shortcomings, so as to limit the popularization of manufacturing fuels from cracking waste plastics oil device and technique and use.
Invention content
In view of the defects existing in the prior art, the present invention provides a kind of waste plastic cracking equipment and method, can effectively solve
The above problem.
The technical solution adopted by the present invention is as follows：
The present invention provides a kind of waste plastic cracking equipment, including plastic cracking module, product oil rectifying module and fixed gas
Comprehensively utilize module；
The plastic cracking module includes：Heat scission reaction kettle, catalytic cracking reaction kettle, high-temperature pump, the 1st filter and
2 filters；The product oil rectifying module includes：Rectifying column, condenser and several storage tanks；The fixed gas comprehensively utilizes mould
Block includes：Hot-blast stove and high-temperature heat-exchanging；
The heat scission reaction kettle is provided with feed inlet, oil extraction gas port and discharge gate；The oil extraction of the heat scission reaction kettle
Gas port is connected to the feed inlet of the rectifying column by the 1st pipeline；The discharge gate of the heat scission reaction kettle is connected by the 2nd pipeline
It is connected to the feed inlet of the catalytic cracking reaction kettle；Wherein, high-temperature pump and the 1st filter are installed on the 2nd pipeline；
The catalytic cracking reaction kettle setting feed inlet, oil extraction gas port, feedback outlet and discharge gate；The catalytic cracking reaction
The feed inlet of kettle is connected with the discharge gate of the heat scission reaction kettle；The oil extraction gas port of the catalytic cracking reaction kettle passes through the 3rd
Pipeline is connected to the feed inlet of the rectifying column；The discharge gate of the catalytic cracking reaction kettle is connected to described by the 4th pipeline
The feedback outlet of catalytic cracking reaction kettle；Wherein, the 2nd filter is installed on the 4th pipeline；
Rectifying column setting feed inlet, tower top on-condensible gas row mouth, gasoline fraction row mouth, light diesel fuel fraction Pai Kou and again
Fraction of diesel oil arranges mouth；The gasoline fraction row mouth, light diesel fuel fraction row's mouth and the heavy diesel fuel fraction arrange mouth respectively through cold
It is linked into corresponding storage tank after condenser condensation；For heavy diesel fuel fraction storage tank, outlet is linked into the heat by high-temperature pump
In cracking reaction kettle；The tower top on-condensible gas row mouth is connected to the fixed gas comprehensive utilization module；
The air inlet of the hot-blast stove is connected with tower top on-condensible gas row's mouth；The high-temperature fuel gas of the hot-blast stove passes through
The high-temperature heat-exchanging heat exchange, and then heat the material in the heat scission reaction kettle and the catalytic cracking reaction kettle.
Preferably, the heat scission reaction kettle and the catalytic cracking reaction kettle are filled respectively using the stirring of magnetic seal
It puts.
Preferably, in the plastic cracking module, the product oil rectifying module and fixed gas comprehensive utilization module,
For two units of interconnection, using flanged joint and seal.
Preferably, feed module is further included；The feed inlet of the discharge port of the feed module and the heat scission reaction kettle
It is tightly connected.
Preferably, using feed screw and frequency conversion explosion proof motor is configured in the feed module.
Preferably, the feed screw uses deuterostrophies charger, and the diameter of second level spiral is less than the first order
Spiral, also, second level spiral discharging mouth has contraction, forms conical discharge port.
The present invention also provides a kind of cracking waste plastics method using above-mentioned waste plastic cracking equipment, including following step
Suddenly：
Step 1：Using feed screw to heat scission reaction kettle feed while, to heat scission reaction kettle add in high temperature take off
Chlorine agent powder carries out heat scission reaction；Wherein, after plastic molten melt, dechlorination, the plastics of molten state immediately by dechlorination when generate
HCl absorbs, and realizes the dechlorination reaction in high-temperature liquid-phase；
Step 2：After heat scission reaction kettle is to plastics thermal cracking, the oil gas that plastic cracking generates is by the 1st pipeline from hot tearing
Solution reaction kettle top enters rectifying column, and the solid matter that plastic cracking obtains is as solvent and the plastics of melting are in heat scission reaction
Bottom portion is through high temperature pumped, and after the filtering of the 1st filter, solid matter is trapped on strainer screen, solvent and melting
Plastics enter catalytic cracking reaction kettle, carry out catalytic pyrolysis again in catalytic cracking reaction kettle；
Step 3：Catalytic cracking reaction kettle carries out catalytic pyrolysis to the plastics of solvent and melting, is produced in catalytic cracking reaction kettle
Raw oil gas enters rectifying column from catalytic cracking reaction kettle top, the solid matter and catalyst generated in catalytic cracking reaction kettle
After filter retains, the plastics of solvent and melting enter catalytic cracking reaction kettle through feedback outlet again, are achieved in recycling；
Step 4：After the oil gas that heat scission reaction kettle and catalytic cracking reaction kettle generate enters rectifying column, according to fixed gas,
Gasoline, light diesel fuel, heavy diesel fuel boiling range carry out side take-off after, the fixed gas of overhead extraction enters fixed gas comprehensive utilization mould
Block；Gasoline, light diesel fuel and heavy diesel fuel respectively enter gasoline tank, light diesel fuel storage tank and heavy diesel fuel storage tank；Then, heavy diesel fuel storage tank
In heavy diesel fuel heat scission reaction kettle is squeezed into using high-temperature pump, on the one hand as waste plastics solvent, on the other hand cracked again,
Realize that product heavy diesel fuel recycles simultaneously second pyrolysis；
Step 5：Fixed gas into fixed gas comprehensive utilization module is then burnt by hot-blast stove, is given by heat exchanger
Material heating in the material and rectifying column in material, catalytic cracking reaction kettle in heat scission reaction kettle, realizes gas integrated
It utilizes.
Preferably, in step 1, feed screw uses deuterostrophies charger, and the diameter of second level spiral is less than first
Grade spiral, also, second level spiral discharging mouth has contraction, forms conical discharge port, therefore, material has crowded in the spiral of the second level
Pressure acts on, and prevents the gas overflowing in heat scission reaction kettle.
Waste plastic cracking equipment provided by the invention and method have the following advantages：
Apparatus of the present invention have the characteristics that continuous production, environmental protection, anti-coking, light oil yield are high, energy-efficient, can push away extensively
It is wide to use.
Description of the drawings
Fig. 1 is the structure diagram of waste plastic cracking equipment provided by the invention.
Specific embodiment
In order to which technical problem solved by the invention, technical solution and advantageous effect is more clearly understood, below in conjunction with
Accompanying drawings and embodiments, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein only to
It explains the present invention, is not intended to limit the present invention.
The present invention provides a kind of waste plastic cracking equipment, including plastic cracking module, product oil rectifying module and fixed gas
Comprehensively utilize module；
Plastic cracking module includes：Heat scission reaction kettle, catalytic cracking reaction kettle, high-temperature pump, the 1st filter and the 2nd mistake
Filter；Product oil rectifying module includes：Rectifying column, condenser and several storage tanks；Fixed gas comprehensive utilization module includes：Hot wind
Stove and high-temperature heat-exchanging；
Heat scission reaction kettle is provided with feed inlet, oil extraction gas port and discharge gate；The oil extraction gas port of heat scission reaction kettle passes through
1st pipeline is connected to the feed inlet of rectifying column；The discharge gate of heat scission reaction kettle is connected to catalytic cracking reaction by the 2nd pipeline
The feed inlet of kettle；Wherein, high-temperature pump and the 1st filter are installed on the 2nd pipeline；
Catalytic cracking reaction kettle setting feed inlet, oil extraction gas port, feedback outlet and discharge gate；The charging of catalytic cracking reaction kettle
Mouth is connected with the discharge gate of heat scission reaction kettle；The oil extraction gas port of catalytic cracking reaction kettle is connected to rectifying column by the 3rd pipeline
Feed inlet；The discharge gate of catalytic cracking reaction kettle is connected to the feedback outlet of catalytic cracking reaction kettle by the 4th pipeline；Wherein,
The 2nd filter is installed on the 4th pipeline；
Rectifying column setting feed inlet, tower top on-condensible gas row mouth, gasoline fraction row mouth, light diesel fuel fraction row's mouth and heavy diesel fuel
Fraction arranges mouth；Gasoline fraction row mouth, light diesel fuel fraction row's mouth and heavy diesel fuel fraction row mouth are linked into after condensed device condenses respectively
In corresponding storage tank；For heavy diesel fuel fraction storage tank, outlet is linked by high-temperature pump in heat scission reaction kettle；Tower top does not coagulate
Gas row's mouth is connected to fixed gas comprehensive utilization module；
The air inlet of hot-blast stove is connected with tower top on-condensible gas row's mouth；The high-temperature fuel gas of hot-blast stove is changed by high-temperature heat-exchanging
Heat, and then heat the material in heat scission reaction kettle and catalytic cracking reaction kettle.
The main working process of above-mentioned cracking waste plastics device is：
Heat scission reaction occurs for heat scission reaction kettle, i.e.,：Only make plastics that cracking reaction occur under heat effect.Catalysis is split
Catalytic pyrolysis occurs for solution reaction kettle, i.e.,：Catalyst is added in reaction vessel, makes plastics that cracking occur under catalyst action anti-
It should.In product rectification module, the oil gas generated by heat scission reaction kettle and catalytic cracking reaction kettle is passed directly into rectifying dress
It puts, discharges and be followed successively by from low temperature to high temperature：Fixed gas, gasoline, light diesel fuel and heavy diesel fuel.Wherein, heavy diesel fuel ingredient finally returns that
It is continued cycling through into heat scission reaction kettle as solvent.Module is comprehensively utilized from the fixed gas that rectifier unit comes out by fixed gas
In hot air furnace device burning generate heat, to heat scission reaction kettle, catalytic cracking reaction kettle and rectifying column heat supply, realization is not coagulated
The comprehensive utilization of gas.
The present invention also provides a kind of cracking waste plastics methods, include the following steps：
Step 1：Using feed screw to heat scission reaction kettle feed while, to heat scission reaction kettle add in high temperature take off
Chlorine agent powder carries out heat scission reaction；Wherein, after plastic molten melt, dechlorination, the plastics of molten state immediately by dechlorination when generate
HCl absorbs, and realizes the dechlorination reaction in high-temperature liquid-phase；
In this step, feed screw uses deuterostrophies charger, and the diameter of second level spiral is less than first order spiral,
Also, second level spiral discharging mouth has contraction, forms conical discharge port, and therefore, material has squeezing action in the spiral of the second level,
Prevent the gas overflowing in heat scission reaction kettle.
Step 2：After heat scission reaction kettle is to plastics thermal cracking, the oil gas that plastic cracking generates is by the 1st pipeline from hot tearing
Solution reaction kettle top enters rectifying column, and the solid matter that plastic cracking obtains is as solvent and the plastics of melting are in heat scission reaction
Bottom portion is through high temperature pumped, and after the filtering of the 1st filter, solid matter is trapped on strainer screen, solvent and melting
Plastics enter catalytic cracking reaction kettle, carry out catalytic pyrolysis again in catalytic cracking reaction kettle；Wherein, solid matter includes modeling
The substances such as the impurity that product, material after residue, remaining antichlor and dechlorination reaction that material cracking generates are brought into.
Step 3：Catalytic cracking reaction kettle carries out catalytic pyrolysis to the plastics of solvent and melting, is produced in catalytic cracking reaction kettle
Raw oil gas enters rectifying column from catalytic cracking reaction kettle top, the solid matter and catalyst generated in catalytic cracking reaction kettle
After filter retains, the plastics of solvent and melting enter catalytic cracking reaction kettle through feedback outlet again, are achieved in recycling,
Realize continuous feed, continuous discharge.
Step 4：After the oil gas that heat scission reaction kettle and catalytic cracking reaction kettle generate enters rectifying column, according to fixed gas,
Gasoline, light diesel fuel, heavy diesel fuel boiling range carry out side take-off after, the fixed gas of overhead extraction enters fixed gas comprehensive utilization mould
Block；Gasoline, light diesel fuel and heavy diesel fuel respectively enter gasoline tank, light diesel fuel storage tank and heavy diesel fuel storage tank；Then, heavy diesel fuel storage tank
In heavy diesel fuel heat scission reaction kettle is squeezed into using high-temperature pump, on the one hand as waste plastics solvent, on the other hand cracked again,
Realize that product heavy diesel fuel recycles simultaneously second pyrolysis；
Step 5：Fixed gas into fixed gas comprehensive utilization module is then burnt by hot-blast stove, is given by heat exchanger
Material heating in the material and rectifying column in material, catalytic cracking reaction kettle in heat scission reaction kettle, realizes gas integrated
It utilizes.
By waste plastic cracking equipment provided by the invention and method, has the following advantages：
(1) material zero is revealed
In feed module using deuterostrophies charger and with frequency conversion explosion proof motor, and it is less than the diameter of second level spiral
First order spiral, and second level spiral discharging mouth has contraction, makes conical discharge port, to reach material in the spiral of the second level
There is squeezing action, prevent the gas overflowing in pyrolysis kettle；The agitating device of magnetic seal is used in plastic cracking module, is realized
Material zero is revealed；Each device all using flanged joint and seals.
(2) while charging, high-temperature dechlorinating agent powder is added in, after plastic molten melt, dechlorination, immediately by the HCl of generation
It absorbs, realizes the dechlorination reaction in high-temperature liquid-phase, avoid the HCl haptoreaction kettle walls and pipeline of generation.
(3) continuous feed and continuous discharge are realized；
(4) it realizes product heavy diesel fuel second pyrolysis, improves lysis efficiency and gasoline, light diesel fuel yield；
(5) comprehensive utilization of fixed gas that cracking generates is realized.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should
Depending on protection scope of the present invention.
Claims (6)
- A kind of 1. cracking waste plastics method based on waste plastic cracking equipment, which is characterized in that waste plastic cracking equipment includes modeling Material cracking module, product oil rectifying module and fixed gas comprehensive utilization module；The plastic cracking module includes：Heat scission reaction kettle, catalytic cracking reaction kettle, high-temperature pump, the 1st filter and the 2nd mistake Filter；The product oil rectifying module includes：Rectifying column, condenser and several storage tanks；The fixed gas comprehensively utilizes module Including：Hot-blast stove and high-temperature heat-exchanging；The heat scission reaction kettle is provided with feed inlet, oil extraction gas port and discharge gate；The oil extraction gas port of the heat scission reaction kettle The feed inlet of the rectifying column is connected to by the 1st pipeline；The discharge gate of the heat scission reaction kettle is connected to by the 2nd pipeline The feed inlet of the catalytic cracking reaction kettle；Wherein, high-temperature pump and the 1st filter are installed on the 2nd pipeline；The catalytic cracking reaction kettle setting feed inlet, oil extraction gas port, feedback outlet and discharge gate；The catalytic cracking reaction kettle Feed inlet is connected with the discharge gate of the heat scission reaction kettle；The oil extraction gas port of the catalytic cracking reaction kettle passes through the 3rd pipeline It is connected to the feed inlet of the rectifying column；The discharge gate of the catalytic cracking reaction kettle is connected to the catalysis by the 4th pipeline The feedback outlet of cracking reaction kettle；Wherein, the 2nd filter is installed on the 4th pipeline；The rectifying column setting feed inlet, tower top on-condensible gas row mouth, gasoline fraction row mouth, light diesel fuel fraction row's mouth and heavy diesel fuel Fraction arranges mouth；The gasoline fraction row mouth, light diesel fuel fraction row's mouth and heavy diesel fuel fraction row's mouth distinguish condensed device It is linked into after condensation in corresponding storage tank；For heavy diesel fuel fraction storage tank, outlet is linked into the thermal cracking by high-temperature pump In reaction kettle；The tower top on-condensible gas row mouth is connected to the fixed gas comprehensive utilization module；The air inlet of the hot-blast stove is connected with tower top on-condensible gas row's mouth；The high-temperature fuel gas of the hot-blast stove passes through described High-temperature heat-exchanging exchanges heat, and then heats the material in the heat scission reaction kettle and the catalytic cracking reaction kettle；The main working process of above-mentioned cracking waste plastics device is：Heat scission reaction occurs for heat scission reaction kettle, i.e.,：Only make plastics that cracking reaction occur under heat effect.Catalytic pyrolysis is anti- Answer kettle that catalytic pyrolysis occurs, i.e.,：Catalyst is added in reaction vessel, makes plastics that cracking reaction occur under catalyst action； In product rectification module, the oil gas generated by heat scission reaction kettle and catalytic cracking reaction kettle is passed directly into rectifier unit, Discharging is followed successively by from low temperature to high temperature：Fixed gas, gasoline, light diesel fuel and heavy diesel fuel；Wherein, heavy diesel fuel ingredient is finally returned to heat It is continued cycling through in cracking reaction kettle as solvent.It is in the block by fixed gas comprehensive utilization mould from the fixed gas that rectifier unit comes out Hot air furnace device burning generates heat, to heat scission reaction kettle, catalytic cracking reaction kettle and rectifying column heat supply, realizes fixed gas Comprehensive utilization；Cracking waste plastics method, includes the following steps：Step 1：Using feed screw to heat scission reaction kettle feed while, to heat scission reaction kettle add in high-temperature dechlorinating agent Powder carries out heat scission reaction；Wherein, after plastic molten melt, dechlorination, antichlor powder immediately by dechlorination when the HCl that generates inhale It receives, realizes the dechlorination reaction in high-temperature liquid-phase；Step 2：After heat scission reaction kettle is to plastics thermal cracking, the oil gas that plastic cracking generates is by the 1st pipeline from Pyrolysis Kettle top is answered to enter rectifying column, the solid matter that plastic cracking obtains is as solvent and the plastics of melting are in heat scission reaction bottom Portion is through high temperature pumped, and after the filtering of the 1st filter, solid matter is trapped on strainer screen, the modeling of solvent and melting Material enters catalytic cracking reaction kettle, carries out catalytic pyrolysis again in catalytic cracking reaction kettle；Step 3：Catalytic cracking reaction kettle carries out catalytic pyrolysis to the plastics of solvent and melting, is generated in catalytic cracking reaction kettle Oil gas enters rectifying column from catalytic cracking reaction kettle top, and the solid matter generated in catalytic cracking reaction kettle and catalyst pass through After filter retention, the plastics of solvent and melting enter catalytic cracking reaction kettle through feedback outlet again, are achieved in recycling；Step 4：After the oil gas that heat scission reaction kettle and catalytic cracking reaction kettle generate enters rectifying column, according to fixed gas, gasoline, Light diesel fuel, heavy diesel fuel boiling range carry out side take-off after, the fixed gas of overhead extraction enters fixed gas comprehensive utilization module；Vapour Oil, light diesel fuel and heavy diesel fuel respectively enter gasoline tank, light diesel fuel storage tank and heavy diesel fuel storage tank；Then, in heavy diesel fuel storage tank Heavy diesel fuel squeezes into heat scission reaction kettle using high-temperature pump, on the one hand as waste plastics solvent, is on the other hand cracked, realized again Product heavy diesel fuel recycles and second pyrolysis；Step 5：Fixed gas into fixed gas comprehensive utilization module is then burnt by hot-blast stove, by heat exchanger to hot tearing Material heating in the material and rectifying column in material, catalytic cracking reaction kettle in solution reaction kettle, realizes that gas integrated utilizes；In step 1, feed screw uses deuterostrophies charger, and the diameter of second level spiral is less than first order spiral, also, Second level spiral discharging mouth has contraction, forms conical discharge port, therefore, material has squeezing action in the spiral of the second level, prevents Gas overflowing in heat scission reaction kettle.
- 2. the cracking waste plastics method according to claim 1 based on waste plastic cracking equipment, which is characterized in that the heat Cracking reaction kettle and the catalytic cracking reaction kettle use the agitating device of magnetic seal respectively.
- 3. the cracking waste plastics method according to claim 1 based on waste plastic cracking equipment, which is characterized in that the modeling In material cracking module, the product oil rectifying module and fixed gas comprehensive utilization module, for two lists of interconnection Member using flanged joint and seals.
- 4. the cracking waste plastics method according to claim 1 based on waste plastic cracking equipment, which is characterized in that further include Feed module；The discharge port of the feed module and the feed inlet of the heat scission reaction kettle are tightly connected.
- 5. the cracking waste plastics method according to claim 4 based on waste plastic cracking equipment, which is characterized in that it is described into Material module is using feed screw and frequency conversion explosion proof motor is configured.
- 6. the cracking waste plastics method according to claim 5 based on waste plastic cracking equipment, which is characterized in that the spiral shell Charger is revolved using deuterostrophies charger, and the diameter of second level spiral is less than first order spiral, also, second level spiral goes out Material mouth has contraction, forms conical discharge port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610796258.6A CN106281396B (en) | 2016-08-31 | 2016-08-31 | Waste plastic cracking equipment and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610796258.6A CN106281396B (en) | 2016-08-31 | 2016-08-31 | Waste plastic cracking equipment and method |
Publications (2)
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| CN107434979A (en) * | 2017-08-09 | 2017-12-05 | 蓝德环保科技集团股份有限公司 | A kind of waste plastic oil-refining method |
| CN107828440A (en) * | 2017-12-11 | 2018-03-23 | 广西锟德能源科技有限公司 | A kind of continuous carburetor of waste plastics |
| CN109481982A (en) * | 2018-10-18 | 2019-03-19 | 海宁市英德赛电子有限公司 | A kind of the rectifying Preparation equipment and technique of 6N4 high-purity ammon |
| CN112063409B (en) * | 2020-09-08 | 2022-04-26 | 重庆科技学院 | Process and device for preparing oil by pyrolyzing chlorine-containing plastics based on multiphase gas-solid fluidization reaction |
| CN112646597A (en) * | 2020-12-14 | 2021-04-13 | 蓝德环保科技集团股份有限公司 | Automatic continuous operation reaction device and method for preparing fuel oil by cracking waste plastics |
| CN114540067A (en) * | 2022-01-12 | 2022-05-27 | 青岛科技大学 | System for improving yield of organic compound cracking liquid phase product and working method thereof |
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| CN102786980A (en) * | 2012-08-01 | 2012-11-21 | 山东汇科通用机械有限公司 | Waste plastic oil refining production method and production line thereof |
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