CN110669549A - Waste mineral oil regeneration and recovery treatment method - Google Patents
Waste mineral oil regeneration and recovery treatment method Download PDFInfo
- Publication number
- CN110669549A CN110669549A CN201910917376.1A CN201910917376A CN110669549A CN 110669549 A CN110669549 A CN 110669549A CN 201910917376 A CN201910917376 A CN 201910917376A CN 110669549 A CN110669549 A CN 110669549A
- Authority
- CN
- China
- Prior art keywords
- oil
- tower
- water
- wax
- heat exchanger
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
- C10G53/00—Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes
- C10G53/02—Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes plural serial stages only
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
- C10M175/0025—Working-up used lubricants to recover useful products ; Cleaning by thermal processes
- C10M175/0033—Working-up used lubricants to recover useful products ; Cleaning by thermal processes using distillation processes; devices therefor
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention relates to a waste mineral oil regeneration recovery processing method, which comprises a flash tower, a flash tower top condenser, a flash tower top oil-water separation tank, a raw oil/flash tower side line oil heat exchanger, a flash tower side line water cooler, a reaction feeding heating furnace, a reactor, a residual oil fractionating tower, a residual oil tower top condenser, a four-stage raw oil/residual oil heat exchanger, a residual oil water cooler, a wax oil fractionating tower, a secondary raw oil/wax oil heat exchanger, a wax oil water cooler, a wax oil tower top condenser, a lubricating oil fractionating tower, a secondary raw oil/lubricating oil heat exchanger, a lubricating oil water cooler, a lubricating oil tower top condenser, an engine oil fractionating tower, a secondary raw oil/engine oil heat exchanger, an engine oil water cooler, an engine oil tower top condenser, a fuel oil/fuel oil heat exchanger, a, The heat-conducting oil furnace, the non-combustible gas buffer tank and the fuel oil tower top buffer tank are treated. The invention has the advantages that: the resources are reasonably recycled.
Description
Technical Field
The invention relates to the technical field of waste mineral oil treatment, in particular to a waste mineral oil regeneration and recovery treatment method.
Background
The waste mineral oil is mineral oil extracted and refined from petroleum, coal and oil shale, and changes the original physical and chemical properties due to the action of external factors in the processes of mining, processing and using, and can not be used continuously.
The waste mineral oil is a complex mixture composed of a plurality of substances, and the main components of the waste mineral oil comprise C15-C36 alkane, Polycyclic Aromatic Hydrocarbon (PAHs), olefin, phenol and the like. Its various components
Has certain toxic and harmful effects on human body. Therefore, once a large amount of the liquid enters the environment, serious environmental pollution is caused. In addition, the waste mineral oil can destroy the normal living environment of organisms, and cause biological dysfunction.
According to data reports, the base oil produced by adopting the hydrogenation process in China is less, and the yield of the conventional hydrogenated base oil is only about 600 million t/a. In the structure of the lubricating oil base oil, the base oil above HVI only accounts for about 56 percent, and the MVI product is not suitable for the requirement of upgrading and updating oil products. Along with the expansion of the market and the improvement of the quality, particularly after the requirement of multi-stage engine oil is increased, the requirements on high viscosity index and low volatility of the lubricating oil base oil are provided, and the current lubricating oil base oil product cannot meet the standard requirement of high-quality products. In addition, the waste mineral oil components are complex, and further investigation is required to obtain standard lubricant base oils, engine oils and fuel oils.
In view of the above, there is a need to provide a method for recycling lubricant base oil, engine oil and fuel oil from waste mineral oil.
Disclosure of Invention
The invention aims to provide a method for regenerating and processing standard lubricating oil base oil, engine oil and fuel oil refined from waste mineral oil.
In order to solve the technical problems, the technical scheme of the invention is as follows: the regeneration and recovery treatment method of the waste mineral oil has the innovation points that: the regeneration recovery treatment method comprises the following steps:
step 1: dewatering pretreatment: sending the waste mineral oil with layered precipitates to a flash tower at the temperature of 95-105 ℃ for flash evaporation for 8-10 h, and carrying out dehydration pretreatment;
step 2: oil-water separation: after dehydration pretreatment, water and light components in the waste mineral oil are evaporated from the top of the tower, condensed by a condenser at the top of the flash tower and then enter an oil-water separation tank at the top of the flash tower for oil-water separation;
and step 3: after oil-water separation, a water layer enters a sewage treatment station for treatment, non-condensable gas enters a vacuum pump to be pumped to a heat conducting oil boiler for combustion and then is discharged, an oil layer is subjected to heat exchange through a raw oil/flash tower side line oil heat exchanger with the temperature controlled at 200-220 ℃, and after gasification, the oil layer enters a flash tower side line water cooler to obtain fuel oil for storage;
and 4, step 4: naturally precipitating the oil layer for 3-5 h after oil-water separation, and collecting a small amount of heavy oil components and oil residues from the bottom of an oil-water separation tank at the top of the flash tower to a reaction feeding heating furnace for treatment to obtain bottom oil of the flash tower;
and 5: heating the bottom oil of the flash tower obtained in the step (4) to 206-220 ℃ through a reaction kettle, gasifying the bottom oil, then feeding the bottom oil into a residual oil fractionating tower, evaporating water and a small amount of volatile components of base oil from the top of the residual oil fractionating tower, condensing the volatile components by a residual oil overhead condenser to obtain residual oil overhead oil, and sequentially pumping heavy components in the material from the bottom of the fractionating tower into a four-stage raw oil/residual oil heat exchanger and a residual oil water cooler with the temperature controlled at 360-385 ℃ for treatment to obtain residual oil for storage;
step 6: feeding the residual oil tower top oil obtained in the step 5 into a wax oil fractionating tower with the temperature controlled at 330-350 ℃ for fractionation, evaporating water and a small amount of base oil volatile components in the material from the top of the wax oil fractionating tower, feeding the evaporated water and a small amount of base oil volatile components into a wax oil tower top condenser for condensation to obtain wax oil tower top oil, and sequentially pumping heavy components in the material from the bottom of the wax oil fractionating tower into a secondary raw oil/wax oil heat exchanger and a wax oil water cooler for treatment to obtain wax oil for storage;
and 7: feeding the wax oil tower top oil obtained in the step (6) into a lubricating oil fractionating tower with the temperature controlled at 260-280 ℃, evaporating water and a small amount of volatile components of base oil from the tower top of the lubricating oil fractionating tower, then feeding the evaporated water and a small amount of volatile components of the base oil into a lubricating oil tower top condenser for condensation to obtain lubricating oil tower top oil, and sequentially pumping heavy components in the material from the tower bottom of the lubricating oil fractionating tower into a secondary raw oil/lubricating oil heat exchanger and a lubricating oil water cooler for treatment to obtain lubricating oil for storage;
and 8: feeding the lubricating oil tower top oil obtained in the step (7) into an engine oil fractionating tower with the temperature controlled at 200-220 ℃, evaporating water and a small amount of base oil volatile components in the material from the tower top of the engine oil fractionating tower, feeding the evaporated water and a small amount of base oil volatile components into an engine oil tower top condenser to obtain engine oil tower top oil, and sequentially pumping heavy components in the material from the tower bottom of the engine oil fractionating tower into a secondary raw oil/engine oil heat exchanger and an engine oil water cooler for treatment to obtain engine oil for storage;
and step 9: and (3) feeding the engine oil tower top oil obtained in the step (8) into a fuel oil fractionating tower with the temperature controlled at 140-160 ℃, evaporating water and a small amount of base oil volatile components in the material from the top of the fuel oil fractionating tower, sequentially feeding the evaporated water and a small amount of base oil volatile components into a fuel oil tower top condenser, a heat conducting oil furnace and a fuel oil tower top buffer tank to obtain light fuel oil, and sequentially pumping heavy components in the material from the bottom of the fuel oil fractionating tower into a raw oil/fuel oil heat exchanger and a fuel oil water cooler for treatment to obtain fuel oil.
The invention has the advantages that: the invention relates to a waste mineral oil regeneration recovery processing method, which comprises the steps of sending precipitated and layered waste mineral oil to a flash tower for dehydration pretreatment, evaporating water and light substances in the waste mineral oil from the top of the tower, condensing the waste mineral oil by a condenser, then feeding the waste mineral oil into an oil-water separation tank, separating oil from water, feeding a water layer into a sewage treatment station for treatment, feeding noncondensable gas into a vacuum pump for pumping to a heat-conducting oil boiler for combustion and then discharging, exchanging heat of an oil layer by a heat exchanger, and feeding the gasified waste mineral oil into a water cooler to obtain fuel; the heavy components from the bottom of the flash tower are pumped into a reaction feeding heating furnace for heating, the heavy components are gasified and then enter a residual oil fractionating tower, the materials enter a residual oil tower top condenser after water and a small amount of base oil volatile components are evaporated from the top of the fractionating tower, residual oil tower top oil is obtained, the heavy components in the materials are sequentially pumped into a heat exchanger and a residual oil water cooler from the bottom of the fractionating tower for processing, and residual oil is obtained and stored;
the waste residue oil enters a wax oil fractionating tower, the material enters a wax oil tower top condenser after water and a small amount of base oil volatile components are evaporated from the top of the fractionating tower to obtain wax oil tower top oil, and heavy components in the material are sequentially pumped into a heat exchanger and a wax oil water cooler from the tower bottom of the fractionating tower to be treated to obtain wax oil for storage; the wax oil tower top oil enters a lubricating oil fractionating tower, the material enters a lubricating oil tower top condenser after water and a small amount of base oil volatile components are evaporated from the top of the fractionating tower to obtain lubricating oil tower top oil, and heavy components in the material are sequentially pumped into a heat exchanger and a lubricating oil water cooler from the tower bottom of the fractionating tower to be treated to obtain lubricating oil for storage;
the waste lubricating oil enters an engine oil fractionating tower, the materials enter an engine oil tower top condenser after water and a small amount of volatile components of the base oil are evaporated from the top of the fractionating tower, engine oil tower top oil is obtained, heavy components in the materials are sequentially pumped into a heat exchanger and an engine oil water cooler from the bottom of the fractionating tower to be processed, and the engine oil is obtained and stored; the top oil of the machine oil tower enters a fuel oil fractionating tower, the materials enter a fuel oil tower top condenser, a heat conducting oil furnace and a fuel oil tower top buffer tank in sequence after water and a small amount of base oil volatile components are evaporated from the top of the fractionating tower, so that light fuel oil is obtained, and heavy components in the materials are pumped into a heat exchanger and a fuel oil water cooler in sequence from the bottom of the fractionating tower to be processed, so that the fuel oil is obtained and stored; can recycle part of the base oil, recycle effective resources and avoid waste oil.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 and 2 are schematic structural diagrams of a pretreatment system in the waste mineral oil regeneration and recovery processing method.
FIG. 3 is a schematic structural diagram of a waste oil treatment system in the waste mineral oil recycling treatment method.
Fig. 4 and 5 are schematic structural views of a used lubricating oil recycling system in the waste mineral oil recycling treatment method.
Detailed Description
The following examples are presented to enable one of ordinary skill in the art to more fully understand the present invention and are not intended to limit the scope of the embodiments described herein.
Examples
In the method for recycling waste mineral oil of this embodiment, the waste mineral oil is recycled through the pretreatment system, the waste residue oil treatment system, and the waste lubricant oil recycling system.
The specific structure of the pretreatment system, as shown in fig. 1 and 2, includes a flash column 1, a flash column line tank 2, a flash column overhead condenser 3, a flash column overhead oil-water separation tank 4, a raw oil/flash column side line oil heat exchanger 5, a flash column side line water cooler 6, a reaction feed heating furnace 7, a reactor 8, a residual oil fractionating column 9, a residual oil overhead condenser 10, a four-stage raw oil/residual oil heat exchanger 11, and a residual oil water cooler 12.
The center of the top end of the flash tower 1 is provided with a water/light component discharge pipeline A communicated with the flash tower 1, the other end of the water/light component discharge pipeline A is communicated with a flash tower top condenser 3, and two flash tower top condensers 3 are arranged on the water/light component discharge pipeline A in parallel; the side top-down of flash column 1 upper portion has set gradually light fuel oil ejection of compact pipeline A and the fuel oil ejection of compact pipeline A with flash column 1 intercommunication, and the other end and the flash column survey line jar 2 intercommunication of fuel oil ejection of compact pipeline A, and the top center of this flash column survey line jar 2 is provided with the noncondensable gas pipeline of giving vent to anger with flash column survey line jar 2 intercommunication.
The flash tower measuring tank 2 is communicated with the raw oil/flash tower side line oil heat exchanger 5 through a fuel oil discharge pipeline B, and a flash tower measuring pump 13 is arranged on the fuel oil discharge pipeline B in series; the raw oil/flash tower side line oil heat exchanger 5 is also communicated with a fuel oil discharge pipeline C, and the fuel oil discharge pipeline C is serially connected with a flash tower side line water cooler 6; a raw oil discharge pipeline A and a raw oil feeding pipeline A which are communicated with the raw oil/flash tower side line oil heat exchanger 5 are sequentially arranged at one side end of the raw oil/flash tower side line oil heat exchanger 5 from top to bottom.
The bottom center of the flash tower 1 is provided with a heavy component discharge pipeline communicated with the flash tower 1, the other end of the heavy component discharge pipeline is communicated with the reaction feeding heating furnace 7, and the heavy component discharge pipeline is also provided with a flash tower bottom pump 14 in series.
A saturated steam inlet pipeline communicated with the reaction feeding heating furnace 7 is arranged on one side of the upper end of the reaction feeding heating furnace 7, an superheated steam outlet pipeline communicated with the reaction feeding heating furnace 7 is arranged on the other side of the upper end of the reaction feeding heating furnace 7, and a flash tower bottom oil outlet pipeline communicated with the reaction feeding heating furnace 7 is arranged on the reaction feeding heating furnace 7 below the superheated steam outlet pipeline.
The condenser 3 at the top of the flash tower is communicated with the oil-water separating tank 4 at the top of the flash tower through a water/light component discharging pipeline B, the light fuel oil discharging pipeline B communicated with the oil-water separating tank 4 at the top of the flash tower is further arranged at the bottom of the oil-water separating tank 4 at the top of the flash tower, the other end of the light fuel oil discharging pipeline B is communicated with the light fuel oil discharging pipeline A, and a reaction tower product pump 15 is arranged on the light fuel oil discharging pipeline B in series.
The center of the bottom end of the reactor 8 is communicated with a bottom oil discharge pipeline of the flash tower, the reactor 8 is communicated with a residual oil fractionating tower 9 through a residual oil discharge pipeline A, and the number of the reactors 8 is two and is arranged between the bottom oil discharge pipeline of the flash tower and the residual oil discharge pipeline A in parallel; a residual oil light component discharge pipeline communicated with the residual oil fractionating tower 9 is arranged in the center of the top end of the residual oil fractionating tower 9, and the other end of the residual oil light component discharge pipeline is communicated with a residual oil tower top condenser 10; two residual oil tower top condensers 10 are arranged on a residual oil light component discharge pipeline in parallel.
A residual oil tower top oil discharge pipeline communicated with the residual oil tower top condenser 10 is arranged at the bottom end of the residual oil tower top condenser 10, and a raw oil discharge pipeline B and a raw oil feeding pipeline B communicated with the residual oil tower top condenser 10 are sequentially arranged at the side end of the residual oil tower top condenser 10 from top to bottom.
A residual oil heavy component discharge pipeline communicated with the residual oil fractionating tower 9 is arranged in the center of the bottom end of the residual oil fractionating tower 9, the other end of the residual oil heavy component discharge pipeline is communicated with the four-stage raw oil/residual oil heat exchanger 11, and a residual oil tower bottom pump 16 is further arranged on the residual oil heavy component discharge pipeline in series; a residual oil heavy component feeding pipeline communicated with the fourth-stage raw oil/residual oil heat exchanger 11 is arranged at the bottom end of the fourth-stage raw oil/residual oil heat exchanger 11, the other end of the residual oil heavy component feeding pipeline is communicated with a residual oil water cooler 12, and a residual oil discharging pipeline B communicated with the residual oil water cooler 12 is also arranged at the bottom end of the residual oil water cooler 12; the residual oil water coolers 12 are arranged on the residual oil discharge pipeline B in parallel.
A raw oil discharge pipeline C and a raw oil feed pipeline C which are communicated with the four-stage raw oil/residual oil heat exchanger 11 are also sequentially arranged at the side end of the four-stage raw oil/residual oil heat exchanger 11 from top to bottom.
The waste residual oil treatment system, as shown in fig. 3, includes a wax oil fractionating tower 17, a secondary raw oil/wax oil heat exchanger 18, a wax oil water cooler 19, a wax oil overhead condenser 20, a lubricating oil fractionating tower 21, a secondary raw oil/lubricating oil heat exchanger 22, a lubricating oil water cooler 23, and a lubricating oil overhead condenser 24.
The middle part of the side end of the wax oil fractionating tower 17 is communicated with the residual oil tower top oil discharging pipeline, the bottom center of the wax oil fractionating tower 17 is provided with a wax oil heavy component discharging pipeline communicated with the wax oil fractionating tower 17, the other end of the wax oil heavy component discharging pipeline is communicated with the secondary raw oil/wax oil heat exchanger 18, and a wax oil tower bottom pump 25 is connected in series on the wax oil heavy component discharging pipeline.
A raw oil discharge pipeline D and a raw oil feeding pipeline D which are communicated with the secondary raw oil/wax oil heat exchanger 18 are sequentially arranged at the side end of the secondary raw oil/wax oil heat exchanger 18 from top to bottom; a wax oil heavy component feeding pipeline communicated with the secondary raw oil/wax oil heat exchanger 18 is arranged at the bottom end of the secondary raw oil/wax oil heat exchanger 18, the other end of the wax oil heavy component feeding pipeline is communicated with a wax oil water cooler 19, and a wax oil discharging pipeline communicated with the wax oil water cooler 19 is also arranged at the bottom end of the wax oil water cooler 19; two wax oil water coolers 19 are arranged on the wax oil discharging pipeline in parallel.
The top center of the wax oil fractionating tower 17 is provided with a wax oil light component discharging pipeline communicated with the wax oil fractionating tower 17, and the other end of the wax oil light component discharging pipeline is communicated with a wax oil tower top condenser 20.
A wax oil tower top oil discharge pipeline communicated with the wax oil tower top condenser 20 is arranged at the bottom end of the wax oil tower top condenser 20, and the other end of the wax oil tower top oil discharge pipeline is communicated with a lubricating oil fractionating tower 21; a raw oil discharge pipeline E and a raw oil feeding pipeline E which are communicated with the wax oil tower top condenser 20 are sequentially arranged at the side end of the wax oil tower top condenser 20 from top to bottom, and a lubricating oil tower top condenser 24 is serially arranged on the raw oil feeding pipeline E; two lubricating oil tower top condensers 24 are arranged on the raw oil feeding pipeline E in parallel.
The top center of the lubricating oil fractionating tower 21 is provided with a lubricating oil light component discharging pipeline communicated with the lubricating oil fractionating tower 21, the other end of the lubricating oil light component discharging pipeline is communicated with a lubricating oil tower top condenser 24, and the bottom end of the lubricating oil tower top condenser 24 is also provided with a lubricating oil tower top oil discharging pipeline communicated with the lubricating oil tower top condenser 24.
A lubricating oil heavy component discharging pipeline communicated with the lubricating oil fractionating tower 21 is arranged at the center of the bottom end of the lubricating oil fractionating tower 21, the other end of the lubricating oil heavy component discharging pipeline is communicated with the secondary raw oil/lubricating oil heat exchanger 22, and a lubricating oil tower bottom pump 26 is further arranged on the lubricating oil heavy component discharging pipeline in series.
A lubricating oil heavy component feeding pipeline communicated with the secondary raw oil/lubricating oil heat exchanger 22 is arranged at the bottom end of the secondary raw oil/lubricating oil heat exchanger 22, the other end of the lubricating oil heavy component feeding pipeline is communicated with a lubricating oil water cooler 23, and a lubricating oil discharging pipeline communicated with the lubricating oil water cooler 23 is also arranged at the bottom end of the lubricating oil water cooler 23; a raw oil discharge pipeline F and a raw oil feed pipeline F which are communicated with the secondary raw oil/lubricating oil heat exchanger 22 are sequentially arranged at the side end of the secondary raw oil/lubricating oil heat exchanger 22 from top to bottom.
The system for regenerating and recovering the waste lubricating oil, as shown in fig. 4 and 5, includes an oil fractionating tower 27, a secondary raw oil/oil heat exchanger 28, an oil water cooler 29, an oil tower top condenser 30, a fuel oil fractionating tower 31, a raw oil/fuel oil heat exchanger 32, a fuel oil water cooler 33, a fuel oil tower top condenser 34, a heat transfer oil furnace 35, a non-combustible gas buffer tank 36 and a fuel oil tower top buffer tank 37.
The engine oil fractionating tower 27 is communicated with an oil feeding pipeline at the top of the lubricating oil tower, an engine oil heavy component discharging pipeline communicated with the engine oil fractionating tower 27 is arranged at the center of the bottom end of the engine oil fractionating tower 27, the other end of the engine oil heavy component discharging pipeline is communicated with the secondary raw oil/engine oil heat exchanger 28, and an engine oil tower bottom pump 38 is arranged on the engine oil heavy component discharging pipeline in series.
A raw oil discharge pipeline G and a raw oil feed pipeline G which are communicated with the secondary raw oil/engine oil heat exchanger 28 are sequentially arranged at the side end of the secondary raw oil/engine oil heat exchanger 28 from top to bottom, and the raw oil/fuel oil heat exchanger 32 is serially arranged on the raw oil feed pipeline G; the bottom end of the secondary raw oil/engine oil heat exchanger 28 is provided with an engine oil heavy component feeding pipeline communicated with the secondary raw oil/engine oil heat exchanger 28, the other end of the engine oil heavy component feeding pipeline is communicated with an engine oil water cooler 29, and the bottom end of the engine oil water cooler 29 is also provided with an engine oil discharging pipeline communicated with the engine oil water cooler 29.
The center of the top end of the engine oil fractionating tower 27 is provided with an engine oil light component discharging pipeline communicated with the engine oil fractionating tower 27, and the other end of the engine oil light component discharging pipeline is communicated with an engine oil tower top condenser 30; the engine oil tower top condensers 30 are arranged on the engine oil light component discharging pipeline in parallel.
The bottom end of the engine oil tower top condenser 30 is provided with an engine oil tower top oil discharge pipeline communicated with the engine oil tower top condenser 30, and the other end of the engine oil tower top oil discharge pipeline is communicated with a fuel oil fractionating tower 31; a raw oil discharge pipeline H and a raw oil feeding pipeline H which are communicated with the engine oil tower top condenser 30 are sequentially arranged at the side end of the engine oil tower top condenser 30 from top to bottom.
The top center of the fuel oil fractionating tower 31 is provided with a fuel oil tower top discharge pipeline communicated with the fuel oil fractionating tower 31, the bottom center of the fuel oil fractionating tower 31 is provided with a fuel oil heavy component discharge pipeline communicated with the fuel oil fractionating tower 31, the other end of the fuel oil heavy component discharge pipeline is communicated with the raw oil/fuel oil heat exchanger 32, and the fuel oil heavy component discharge pipeline is also provided with a fuel oil tower bottom pump 39 in series.
The bottom end of the raw oil/fuel oil heat exchanger 32 is provided with a fuel oil heavy component feeding pipeline communicated with the raw oil/fuel oil heat exchanger 32, the other end of the fuel oil heavy component feeding pipeline is communicated with a fuel oil water cooler 33, and the bottom end of the fuel oil water cooler 33 is also provided with a fuel oil discharging pipeline communicated with the fuel oil water cooler 33.
The fuel oil tower top condensers 34 are communicated with a fuel oil tower top discharge pipeline, and two fuel oil tower top condensers 34 are arranged on the fuel oil tower top discharge pipeline in parallel; the bottom end of the fuel oil tower top condenser 34 is provided with a light fuel oil heavy component discharging pipeline communicated with the fuel oil tower top condenser 34, and the other end of the light fuel oil heavy component discharging pipeline is communicated with the heat conducting oil furnace 35.
The top center of the heat conduction oil furnace 35 is provided with a non-combustible gas outlet pipeline A communicated with the heat conduction oil furnace 35, the other end of the non-combustible gas outlet pipeline A is communicated with a non-combustible gas buffer tank 36, and the top center of the non-combustible gas buffer tank 36 is provided with a non-combustible gas outlet pipeline B communicated with the non-combustible gas buffer tank 36.
The center of the bottom end of the heat-conducting oil furnace 35 is provided with a light fuel oil heavy component feeding pipeline communicated with the heat-conducting oil furnace 35, and the other end of the light fuel oil heavy component feeding pipeline is communicated with a fuel oil tower top buffer tank 37; the bottom center of the fuel oil tower top buffer tank 37 is provided with a light fuel oil discharging pipeline communicated with the fuel oil tower top buffer tank 37, and the light fuel oil discharging pipeline is provided with a light fuel oil discharging pump 40 in series.
The method for recycling and treating the waste mineral oil in the embodiment specifically comprises the following steps:
step 1: dewatering pretreatment: sending the waste mineral oil with layered precipitates to a flash tower 1 at the temperature of 95-105 ℃ for flash evaporation for 8-10 h, and carrying out dehydration pretreatment;
step 2: oil-water separation: after dehydration pretreatment, water and light components in the waste mineral oil are evaporated from the top of the tower, condensed by a condenser 3 at the top of the flash tower and enter an oil-water separation tank 4 at the top of the flash tower for oil-water separation;
and step 3: after oil-water separation, a water layer enters a sewage treatment station for treatment, non-condensable gas enters a vacuum pump to be pumped to a heat conducting oil boiler for combustion and then is discharged, an oil layer exchanges heat through a raw oil/flash tower side line oil heat exchanger 5 with the temperature controlled at 200-220 ℃, and the gasified gas enters a flash tower side line water cooler 6 to obtain fuel oil for storage;
and 4, step 4: naturally precipitating the oil layer for 3-5 h after oil-water separation, and collecting a small amount of heavy oil components and oil residues from the bottom of an oil-water separation tank 4 at the top of the flash tower to a reaction feeding heating furnace 7 for treatment to obtain bottom oil of the flash tower;
and 5: heating the bottom oil of the flash tower obtained in the step 4 to 206-220 ℃ through a reaction kettle 8, gasifying the bottom oil, then feeding the bottom oil into a residual oil fractionating tower 9, evaporating water and a small amount of base oil volatile components in the material from the top of the residual oil fractionating tower 9, condensing the evaporated water and a small amount of base oil volatile components through a residual oil overhead condenser 10 to obtain residual oil overhead oil, and sequentially pumping heavy components in the material from the bottom of the fractionating tower into a four-stage raw oil/residual oil heat exchanger 11 and a residual oil water cooler 12 with the temperature controlled at 360-385 ℃ for treatment to obtain residual oil;
step 6: feeding the residual oil tower top oil obtained in the step 5 into a wax oil fractionating tower 17 with the temperature controlled at 330-350 ℃ for fractionation, evaporating water and a small amount of base oil volatile components in the material from the top of the wax oil fractionating tower, then feeding the evaporated water and a small amount of base oil volatile components into a wax oil tower top condenser 20 for condensation to obtain wax oil tower top oil, and sequentially pumping heavy components in the material from the bottom of the wax oil fractionating tower into a secondary raw oil/wax oil heat exchanger 22 and a wax oil water cooler 19 for treatment to obtain wax oil for storage;
and 7: sending the wax oil tower top oil obtained in the step 6 into a lubricating oil fractionating tower 21 with the temperature controlled at 260-280 ℃, evaporating water and a small amount of volatile components of base oil from the top of the lubricating oil fractionating tower 21, then, sending the evaporated water and the volatile components into a lubricating oil tower top condenser 24 for condensation to obtain lubricating oil tower top oil, and sequentially pumping heavy components in the materials into a secondary raw oil/lubricating oil heat exchanger 22 and a lubricating oil water cooler 23 from the bottom of the lubricating oil fractionating tower 21 for treatment to obtain lubricating oil for storage;
and 8: feeding the lubricating oil tower top oil obtained in the step (7) into an engine oil fractionating tower 27 with the temperature controlled at 200-220 ℃, evaporating water and a small amount of base oil volatile components in the material from the tower top of the engine oil fractionating tower 27, feeding the evaporated water and a small amount of base oil volatile components into an engine oil tower top condenser 30 to obtain engine oil tower top oil, and sequentially pumping heavy components in the material from the tower bottom of the engine oil fractionating tower 27 into a secondary raw oil/engine oil heat exchanger 28 and an engine oil water cooler 29 for treatment to obtain engine oil for storage;
and step 9: and (3) feeding the engine oil tower top oil obtained in the step (8) into a fuel oil fractionating tower 31 with the temperature controlled at 140-160 ℃, evaporating water and a small amount of base oil volatile components in the material from the top of the fuel oil fractionating tower 31, sequentially feeding the evaporated water and a small amount of base oil volatile components into a fuel oil tower top condenser 34, a heat conducting oil furnace 35 and a fuel oil tower top buffer tank 37 to obtain light fuel oil, and sequentially pumping heavy components in the material from the bottom of the fuel oil fractionating tower into a raw oil/fuel oil heat exchanger 32 and a fuel oil water cooler 33 for treatment to obtain fuel oil.
The foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (1)
1. A method for recycling and treating waste mineral oil is characterized by comprising the following steps: the regeneration recovery treatment method comprises the following steps:
step 1: dewatering pretreatment: sending the waste mineral oil with layered precipitates to a flash tower at the temperature of 95-105 ℃ for flash evaporation for 8-10 h, and carrying out dehydration pretreatment;
step 2: oil-water separation: after dehydration pretreatment, water and light components in the waste mineral oil are evaporated from the top of the tower, condensed by a condenser at the top of the flash tower and then enter an oil-water separation tank at the top of the flash tower for oil-water separation;
and step 3: after oil-water separation, a water layer enters a sewage treatment station for treatment, non-condensable gas enters a vacuum pump to be pumped to a heat conducting oil boiler for combustion and then is discharged, an oil layer is subjected to heat exchange through a raw oil/flash tower side line oil heat exchanger with the temperature controlled at 200-220 ℃, and after gasification, the oil layer enters a flash tower side line water cooler to obtain fuel oil for storage;
and 4, step 4: naturally precipitating the oil layer for 3-5 h after oil-water separation, and collecting a small amount of heavy oil components and oil residues from the bottom of an oil-water separation tank at the top of the flash tower to a reaction feeding heating furnace for treatment to obtain bottom oil of the flash tower;
and 5: heating the bottom oil of the flash tower obtained in the step (4) to 206-220 ℃ through a reaction kettle, gasifying the bottom oil, then feeding the bottom oil into a residual oil fractionating tower, evaporating water and a small amount of volatile components of base oil from the top of the residual oil fractionating tower, condensing the volatile components by a residual oil overhead condenser to obtain residual oil overhead oil, and sequentially pumping heavy components in the material from the bottom of the fractionating tower into a four-stage raw oil/residual oil heat exchanger and a residual oil water cooler with the temperature controlled at 360-385 ℃ for treatment to obtain residual oil for storage;
step 6: feeding the residual oil tower top oil obtained in the step 5 into a wax oil fractionating tower with the temperature controlled at 330-350 ℃ for fractionation, evaporating water and a small amount of base oil volatile components in the material from the top of the wax oil fractionating tower, feeding the evaporated water and a small amount of base oil volatile components into a wax oil tower top condenser for condensation to obtain wax oil tower top oil, and sequentially pumping heavy components in the material from the bottom of the wax oil fractionating tower into a secondary raw oil/wax oil heat exchanger and a wax oil water cooler for treatment to obtain wax oil for storage;
and 7: feeding the wax oil tower top oil obtained in the step (6) into a lubricating oil fractionating tower with the temperature controlled at 260-280 ℃, evaporating water and a small amount of volatile components of base oil from the tower top of the lubricating oil fractionating tower, then feeding the evaporated water and a small amount of volatile components of the base oil into a lubricating oil tower top condenser for condensation to obtain lubricating oil tower top oil, and sequentially pumping heavy components in the material from the tower bottom of the lubricating oil fractionating tower into a secondary raw oil/lubricating oil heat exchanger and a lubricating oil water cooler for treatment to obtain lubricating oil for storage;
and 8: feeding the lubricating oil tower top oil obtained in the step (7) into an engine oil fractionating tower with the temperature controlled at 200-220 ℃, evaporating water and a small amount of base oil volatile components in the material from the tower top of the engine oil fractionating tower, feeding the evaporated water and a small amount of base oil volatile components into an engine oil tower top condenser to obtain engine oil tower top oil, and sequentially pumping heavy components in the material from the tower bottom of the engine oil fractionating tower into a secondary raw oil/engine oil heat exchanger and an engine oil water cooler for treatment to obtain engine oil for storage;
and step 9: and (3) feeding the engine oil tower top oil obtained in the step (8) into a fuel oil fractionating tower with the temperature controlled at 140-160 ℃, evaporating water and a small amount of base oil volatile components in the material from the top of the fuel oil fractionating tower, sequentially feeding the evaporated water and a small amount of base oil volatile components into a fuel oil tower top condenser, a heat conducting oil furnace and a fuel oil tower top buffer tank to obtain light fuel oil, and sequentially pumping heavy components in the material from the bottom of the fuel oil fractionating tower into a raw oil/fuel oil heat exchanger and a fuel oil water cooler for treatment to obtain fuel oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910917376.1A CN110669549A (en) | 2019-09-26 | 2019-09-26 | Waste mineral oil regeneration and recovery treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910917376.1A CN110669549A (en) | 2019-09-26 | 2019-09-26 | Waste mineral oil regeneration and recovery treatment method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110669549A true CN110669549A (en) | 2020-01-10 |
Family
ID=69079370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910917376.1A Pending CN110669549A (en) | 2019-09-26 | 2019-09-26 | Waste mineral oil regeneration and recovery treatment method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110669549A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111154510A (en) * | 2020-01-22 | 2020-05-15 | 韦祖军 | Waste mineral oil treatment system and application method thereof |
| CN111378504A (en) * | 2020-04-30 | 2020-07-07 | 山西潞安太行润滑油有限公司 | Harmless refining method of coal-based white oil |
| CN112159705A (en) * | 2020-09-29 | 2021-01-01 | 甘肃环馨新能源科技有限公司 | Waste mineral oil regeneration production process |
| CN114854484A (en) * | 2022-06-02 | 2022-08-05 | 河北车迪石油化工有限公司 | Waste mineral oil regeneration process and system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6315897A (en) * | 1986-07-07 | 1988-01-22 | Mitsubishi Heavy Ind Ltd | Method of recovering waste oil |
| WO1994007798A1 (en) * | 1992-09-30 | 1994-04-14 | Viscolube Italiana S.P.A. | Process to re-refine used oils |
| CN103820201A (en) * | 2014-03-07 | 2014-05-28 | 淄博铁宇机车修理有限公司 | Technology and device for regenerating waste mechanical lubricant by four-stage short range distillation |
| CN106929095A (en) * | 2017-01-24 | 2017-07-07 | 玉门市润泽环保再生能源新技术有限公司 | A kind of waste mineral oil processing method |
-
2019
- 2019-09-26 CN CN201910917376.1A patent/CN110669549A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6315897A (en) * | 1986-07-07 | 1988-01-22 | Mitsubishi Heavy Ind Ltd | Method of recovering waste oil |
| WO1994007798A1 (en) * | 1992-09-30 | 1994-04-14 | Viscolube Italiana S.P.A. | Process to re-refine used oils |
| CN103820201A (en) * | 2014-03-07 | 2014-05-28 | 淄博铁宇机车修理有限公司 | Technology and device for regenerating waste mechanical lubricant by four-stage short range distillation |
| CN106929095A (en) * | 2017-01-24 | 2017-07-07 | 玉门市润泽环保再生能源新技术有限公司 | A kind of waste mineral oil processing method |
Non-Patent Citations (1)
| Title |
|---|
| 李艳红等: "废润滑油再生技术的研究进展", 《石油化工》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111154510A (en) * | 2020-01-22 | 2020-05-15 | 韦祖军 | Waste mineral oil treatment system and application method thereof |
| CN111378504A (en) * | 2020-04-30 | 2020-07-07 | 山西潞安太行润滑油有限公司 | Harmless refining method of coal-based white oil |
| CN112159705A (en) * | 2020-09-29 | 2021-01-01 | 甘肃环馨新能源科技有限公司 | Waste mineral oil regeneration production process |
| CN114854484A (en) * | 2022-06-02 | 2022-08-05 | 河北车迪石油化工有限公司 | Waste mineral oil regeneration process and system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110669549A (en) | Waste mineral oil regeneration and recovery treatment method | |
| US3625881A (en) | Crank case oil refining | |
| CN108587766B (en) | Pollution-free continuous regeneration pretreatment process for waste lubricating oil | |
| KR20070116074A (en) | Method for producing base lubricating oil from waste oil | |
| CN107021590B (en) | Method for reducing harmful components in ammonia distillation wastewater through step-by-step separation based on high dry distillation of coal cakes | |
| CN111718749A (en) | Waste mineral oil separation treatment method and system | |
| CN101831348A (en) | Method for separating and recovering product oil from waste lubricating oil and device thereof | |
| CN108485790B (en) | Method for improving regeneration treatment capacity of waste engine oil | |
| CN202576344U (en) | Equipment for extracting oil fuel from sandy oil sludge or/and organic waste | |
| CN103484159B (en) | Matching technology method for optimizing feeding of coal tar suspended bed hydrocracker | |
| CN211079043U (en) | Waste mineral oil regeneration recovery processing system | |
| CN211079039U (en) | Waste mineral oil preprocessing device | |
| CN105713647B (en) | A kind of utilization coal tar maximization prepares the method and device of carbolic oil and diesel oil | |
| CN101892064A (en) | Coal tar separation method | |
| CN211079041U (en) | Waste mineral oil regeneration pretreatment system | |
| CN211079075U (en) | Waste lubricating oil regeneration and recovery system | |
| CN110628455A (en) | Waste mineral oil regeneration recovery processing system | |
| CN102010733A (en) | Method and device for condensing and recovering shale oil in collecting tube section of oil shale retorting system | |
| RU2579517C2 (en) | Method of contacting of one or more contaminated hydrocarbons | |
| CN212246908U (en) | A regeneration processing system for waste mineral oil | |
| CN211079040U (en) | Waste residue oil regeneration treatment device | |
| KR101493966B1 (en) | a method and system for purify in waste oil | |
| RU2546677C1 (en) | Method and installation of hydrocracking with obtaining motor fuels | |
| CN210915945U (en) | Equipment for preparing regenerated base oil from waste mineral oil | |
| CN109097085B (en) | Coal tar pretreatment method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200110 |
|
| WD01 | Invention patent application deemed withdrawn after publication |