CN100516173C - Method for processing waste plastic by using coking unit - Google Patents
Method for processing waste plastic by using coking unit Download PDFInfo
- Publication number
- CN100516173C CN100516173C CNB2005100422146A CN200510042214A CN100516173C CN 100516173 C CN100516173 C CN 100516173C CN B2005100422146 A CNB2005100422146 A CN B2005100422146A CN 200510042214 A CN200510042214 A CN 200510042214A CN 100516173 C CN100516173 C CN 100516173C
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- waste
- used plastics
- oil
- coking
- residual oil
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Abstract
The invention discloses a disposal method of old waste plastics through coking device, which comprises the following steps: using residual oil as raw material; heating; coking; distilling to produce vax oil, fuel oil, naphtha and fuel gas; avoiding dioxins occurrence. The invention provides certain quantity coling material for coking device and disposes old waste plastics simultaneously, which realizes the goal of environment protection and synergy.
Description
Technical field
The invention belongs to the treatment process of waste or used plastics, relate to and utilize the production technique of oil refining coker to handle waste or used plastics.
Background technology
The oil refining coker is to be raw material with residual oil etc., and main products is refinery coke and fuel wet goods, and the working temperature of its coking tower is about 500 ℃.
The processing of waste or used plastics at present mainly contains two kinds of methods: the one, and waste or used plastics is carried out pyrolysis and is converted into oil product etc.; The 2nd, waste or used plastics is carried out heat melt the back granulation, be converted into reprocessed plastic(s).The former is chemical process for these two kinds of methods, and the latter is the physical treatment method.Its shortcoming of method of chemical treatment is that facility investment is big, and transformation efficiency is low, and production cost is higher, and produces the extremely harmful De dioxin of environment, and its advantage is that waste or used plastics is decomposed completely and reduces; The advantage of physical treatment method is that investment is little, and operation of equipment is simple and easy, but its shortcoming is not to be that waste or used plastics is carried out in essence decomposition, and its product be the plastic pellet after refinement.
Waste or used plastics is a kind of pollutent, and it enters heat in time more than 100 ℃ and melts state, can decompose fully under 500 ℃ temperature condition, produces oil product and oil coke.
Summary of the invention
Technical problem to be solved by this invention is to utilize the oil refining coker to handle waste or used plastics, both for coker provides a certain amount of coking raw material, disposes waste or used plastics simultaneously again.
The present invention utilizes coker to handle the method for waste or used plastics, it is characterized in that the residual oil pipeline of waste or used plastics through overheated warm extruder grain injects the coking tower of oil refining coker with graininess before, sends in the coking tower in the lump with residual oil and handles.
Coker is raw material with residual oil, produce wax oil, oil fuel, petroleum naphtha, fuel gas etc. through heating, coking, fractionation, the working temperature of coking tower is (480～500 ℃) about 500 ℃, waste or used plastics enters heat in time more than 100 ℃ and melts state, under 500 ℃ temperature condition, can decompose fully, produce oil product and oil coke.So the coker operations conditionally complete can make waste or used plastics produce pyrolysis, thereby reaches the purpose of handling waste or used plastics, and avoid the generation of dioxin.The present invention both provided a certain amount of coking raw material for coker, disposed waste or used plastics simultaneously again, realized environmental protection and synergic dual purpose.
More specific processing step is:
(1) waste or used plastics of purchase is carried out suitable sub-sieve after, in tubular heater, be heated under 100 ℃ the condition, make waste or used plastics carry out heat and melt, utilize the heat of plastics to melt and cold solid feature, with its extruder grain, its particle diameter should be controlled in the 3mm;
(2) with the plastic waste particle of machine-shaping, inject residual oil with certain pressure on the residual oil pipeline before coking tower, its injection rate generally should be controlled at residual oil weight 10～15% between; Plastic grain behind the injection residual oil is produced heat by residual oil heating (250～280 ℃) and melts, softens, and sends in the coking tower in the lump with residual oil;
(3) after the plastic grain that is heated by residual oil enters coking tower, be heated to 480～500 ℃ (former working temperatures of coking tower) rapidly, and in coking tower with residual oil in the lump by coking, and products such as output oil coke and gasoline, diesel oil (treatment process such as fractionation is with original technology);
(4) in the plastics because of containing compositions such as hydrogen, carbon, after plastic grain is handled by coking, can improve the quality of coking residual oil oil coke and vapour, diesel oil to a certain extent.
Effect of the present invention:
The present invention directly utilizes the production technique of coker and characteristics to handle waste or used plastics, handles waste or used plastics with most economical way, makes waste or used plastics can replace a certain amount of residual oil raw material, handles waste or used plastics simultaneously, reaches environmental protection and energy-conservation effect.
(1) do not need to build the pyrolysis installation of special waste or used plastics, make full use of the throughput and the equipment of coker, make and handle and tooling cost reduces greatly;
(2) waste or used plastics heat is melted granulation, operate simple and easyly, facility investment is little, can form the mass-producing working ability;
(3) can replace a certain amount of residual oil raw material, plastic pellet can be annotated continuously, also can be interrupted filling;
(4) both can reach environmental protection requirement, eliminate " white pollution " thing, not influence the ordinary production and the operation of coker, can receive good economic benefit again.
Description of drawings
Fig. 1 is a process flow sheet of the present invention.
Embodiment
Waste or used plastics melts 100 ℃ of following heat through sorting, extruder grain then, and particle diameter obtains the waste or used plastics particle below 3mm.Mix with heated residual oil (250～280 ℃) in the waste or used plastics particle injecting mixer, waste or used plastics particulate injection rate is 10～15% of a residual oil weight, enters in the lump then to carry out the coking processing in the coking tower.The technological operation and the control condition of coking tower and separation column do not change, and is identical with the treatment process that with residual oil is raw material separately.
The working temperature of coking tower is 480～500 ℃, and cat head is a coking gas, is refinery coke at the bottom of the tower, and the middle part liquid ingredient enters the separation column fractionation and obtains different oil products.
Claims (4)
1, utilizes coker to handle the method for waste or used plastics, it is characterized in that the residual oil pipeline of waste or used plastics through overheated warm extruder grain injects the coking tower of oil refining coker with graininess before, send in the coking tower in the lump with residual oil and handle.
2, method according to claim 1 is characterized in that the waste or used plastics particle grain size is controlled in the 3mm.
3, method according to claim 1 is characterized in that waste or used plastics particulate injection rate is 10～15% of a residual oil weight.
4, method according to claim 1 is characterized in that the working temperature in the coking tower is 480～500 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100422146A CN100516173C (en) | 2005-03-25 | 2005-03-25 | Method for processing waste plastic by using coking unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100422146A CN100516173C (en) | 2005-03-25 | 2005-03-25 | Method for processing waste plastic by using coking unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1837331A CN1837331A (en) | 2006-09-27 |
| CN100516173C true CN100516173C (en) | 2009-07-22 |
Family
ID=37014842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100422146A Expired - Fee Related CN100516173C (en) | 2005-03-25 | 2005-03-25 | Method for processing waste plastic by using coking unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100516173C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101230284B (en) * | 2007-01-25 | 2013-06-19 | 华东理工大学 | Delayed coking treatment method for waste plastics and treatment device thereof |
| EP4055118A1 (en) | 2019-11-05 | 2022-09-14 | ExxonMobil Chemical Patents Inc. | Co-processing of waste plastic in cokers |
| US11939532B2 (en) | 2022-01-25 | 2024-03-26 | Braskem S.A. | Methods and systems for co-feeding waste plastics into a refinery |
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2005
- 2005-03-25 CN CNB2005100422146A patent/CN100516173C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1837331A (en) | 2006-09-27 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090722 Termination date: 20100325 |