CN112843763A - Oil-electricity hybrid heating device for regenerating base oil by using waste mineral oil - Google Patents
Oil-electricity hybrid heating device for regenerating base oil by using waste mineral oil Download PDFInfo
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- CN112843763A CN112843763A CN202110069505.3A CN202110069505A CN112843763A CN 112843763 A CN112843763 A CN 112843763A CN 202110069505 A CN202110069505 A CN 202110069505A CN 112843763 A CN112843763 A CN 112843763A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 328
- 239000002480 mineral oil Substances 0.000 title claims abstract description 44
- 235000010446 mineral oil Nutrition 0.000 title claims abstract description 44
- 239000002699 waste material Substances 0.000 title claims abstract description 42
- 239000002199 base oil Substances 0.000 title claims abstract description 12
- 230000001172 regenerating effect Effects 0.000 title claims abstract description 11
- 239000003921 oil Substances 0.000 claims abstract description 202
- 238000001704 evaporation Methods 0.000 claims abstract description 24
- 230000008020 evaporation Effects 0.000 claims abstract description 22
- 238000005485 electric heating Methods 0.000 claims abstract description 13
- 230000001965 increasing effect Effects 0.000 claims abstract description 8
- 238000004821 distillation Methods 0.000 claims description 20
- 239000003822 epoxy resin Substances 0.000 claims description 8
- 229920000647 polyepoxide Polymers 0.000 claims description 8
- 229920000742 Cotton Polymers 0.000 claims description 7
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 claims description 7
- 239000000835 fiber Substances 0.000 claims description 7
- 238000010025 steaming Methods 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 3
- 230000001939 inductive effect Effects 0.000 claims description 2
- 238000009413 insulation Methods 0.000 claims 2
- 238000006243 chemical reaction Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 8
- 239000000295 fuel oil Substances 0.000 description 7
- 239000007788 liquid Substances 0.000 description 6
- 230000008929 regeneration Effects 0.000 description 5
- 238000011069 regeneration method Methods 0.000 description 5
- 238000004939 coking Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 238000004880 explosion Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005674 electromagnetic induction Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000002927 high level radioactive waste Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000004058 oil shale Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/10—Vacuum distillation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
- B01D3/32—Other features of fractionating columns ; Constructional details of fractionating columns not provided for in groups B01D3/16 - B01D3/30
-
- 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
- C10G7/00—Distillation of hydrocarbon oils
- C10G7/006—Distillation of hydrocarbon oils of waste oils other than lubricating oils, e.g. PCB's containing oils
-
- 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
- C10G7/00—Distillation of hydrocarbon oils
- C10G7/06—Vacuum distillation
Abstract
The invention provides an oil-electricity hybrid heating device for regenerating base oil by using waste mineral oil, which scientifically combines a heat conduction oil heating device and an electric heating device, develops advantages and avoids disadvantages, and is organically combined. The invention provides a technical scheme of an oil-electricity hybrid heating device for regenerating base oil by using waste mineral oil, which comprises the following steps: the electromagnetic heating coil and the heat conducting oil heating jacket are alternately arranged on the surface of the outer wall of the combined evaporation reducing reactor in a staggered manner; each heat-conducting oil heating jacket is connected with a temperature-measuring thermocouple with a temperature-measuring meter of the heat-conducting oil jacket and is used for controlling the heat-conducting oil heating jacket to work or close; each electromagnetic heating coil is connected with a temperature measuring thermocouple of the electromagnetic heating coil with a temperature control meter and is used for setting all the electromagnetic heating coils to be at the same heating temperature or the temperature is gradually increased from bottom to top; the electromagnetic heating coil and the heat conducting oil heating jacket work simultaneously or alternatively.
Description
Technical Field
The invention relates to the technical field of waste mineral oil regeneration, in particular to an oil-electricity hybrid heating device for regenerating base oil by using waste mineral oil.
Background
The waste mineral oil is mineral oil which is extracted and refined from petroleum, coal and oil shale, changes the original physical and chemical properties due to the action of external factors in the processes of mining, processing and using and cannot be continuously used.
In recent years, waste mineral oil regeneration has received attention. No matter it is waste mineral oil regeneration base oil, also regeneration fuel oil (including diesel oil), its heating device mainly includes following several:
1. tubular furnace heating device. The tubular furnace is usually heated by burning fuel oil at the heating temperature of 800-. The heating device of the tube furnace has high thermal efficiency which reaches 82 to 92 percent. In 1-3 kinds of heating devices, if all heating devices adopt fuel oil for heating, the heating cost is the lowest, but the heating devices have the defects of easy coking and easy pipe blockage. In addition, if the heating coil pipe leaks, a fire or explosion is easy to occur.
2. A heating device of a heat conduction oil furnace. The heat conducting oil furnace usually adopts fuel oil to heat, the pipe wall of the heating coil pipe is directly heated by flame and hot air, heat is transferred to heat conducting oil flowing in the pipe through the pipe wall to heat the pipe, and then the waste mineral oil is transferred through the heat conducting oil coil pipe or a jacket to heat the waste mineral oil to heat the pipe. The heating device of the heat conduction furnace has higher heat efficiency which reaches 75 to 88 percent. In 1-3 kinds of heating devices, if all adopt fuel oil heating, its heating cost is lower, and the heating furnace can keep away from waste mineral oil simultaneously, uses safest, but is limited by the conduction oil flash point, and heating temperature is lower, and heating temperature is about 300 ℃ during practical application.
3. A hot air heating device. The hot blast stove usually adopts fuel oil to heat by burning, the wall of the heater (or the reaction kettle) is directly heated by hot blast, the heating temperature is up to 500-. The thermal efficiency of the heating device of the hot blast stove is slightly inferior to that of the heating device of the heat conduction oil stove, and reaches 75-85 percent. In 1-3 kinds of heating devices, if fuel oil is used for heating, the heating cost is slightly inferior to that of a heat-conducting oil furnace heating device, but the heating device has the defect of easy coking. In addition, if the heater (or the reaction kettle) leaks, fire or explosion is easy to happen.
4. An electric heating device. The electric heating device is only limited to an electromagnetic induction heating device, the electromagnetic induction coil wound on the wall of the heater (or the reaction kettle) is controlled by the heating host to directly heat the wall of the heater (or the reaction kettle), the heating temperature can reach 500 ℃ at most, the heating temperature can be automatically set and controlled, and the waste mineral oil in the electric heating device is heated by transferring heat to the wall of the heater (or the reaction kettle). Compared with a 1-3 heating device, the electric heating device has the highest electric-heat conversion efficiency which is up to 98%; the safest, there is no open fire; is most environment-friendly and has no emission, but the heating cost is the highest.
Disclosure of Invention
The invention provides an oil-electricity hybrid heating device for regenerating base oil by using waste mineral oil, which scientifically combines a heat conduction oil heating device and an electric heating device, develops advantages and avoids disadvantages, and is organically combined.
The invention provides a technical scheme of an oil-electricity hybrid heating device for regenerating base oil by using waste mineral oil, which comprises the following steps:
the electromagnetic heating coil and the heat conducting oil heating jacket are alternately arranged on the surface of the outer wall of the combined evaporation reducing reactor in a staggered manner; each heat-conducting oil heating jacket is connected with a temperature-measuring thermocouple with a temperature-measuring meter of the heat-conducting oil jacket and is used for controlling the heat-conducting oil heating jacket to work or close; each electromagnetic heating coil is connected with a temperature measuring thermocouple of the electromagnetic heating coil with a temperature control meter and is used for setting all the electromagnetic heating coils to be at the same heating temperature or the temperature is gradually increased from bottom to top; the electromagnetic heating coil and the heat conducting oil heating jacket work simultaneously or alternatively.
Preferably, in the above-mentioned technical solution of the oil-electric hybrid heating apparatus,
the height of the heat conducting oil heating jacket is between 200 and 500mm, and the installation height of the electromagnetic heating coil is between 200 and 500 mm.
Preferably, in the above-mentioned technical solution of the oil-electric hybrid heating apparatus,
the number of the heat conducting oil heating jackets is the same as that of the electromagnetic heating coils, and the ratio of the number of the heat conducting oil heating jackets to the number of the electromagnetic heating coils is 2:2 to 10: 10.
Preferably, in the above-mentioned technical solution of the oil-electric hybrid heating apparatus,
under the condition of alternative working, when the temperature of the waste mineral oil is lower than a set value, the heat-conducting oil heating jacket works, the electromagnetic heating coil is closed, when the temperature of the waste mineral oil is higher than the set value, the heat-conducting oil heating jacket is closed, and the electromagnetic heating coil heats to work according to the same temperature or gradually increases the heat work from bottom to top according to the temperature.
Preferably, in the above-mentioned technical solution of the oil-electric hybrid heating apparatus,
the outer wall of the combined evaporation reducing reactor is wrapped with aluminum silicate fiber heat-insulating cotton, the outer part of the aluminum silicate fiber heat-insulating cotton is wrapped with an epoxy resin plate, and an electromagnetic heating coil is wound on the epoxy resin plate.
Preferably, in the above-mentioned technical solution of the oil-electric hybrid heating apparatus,
each group of electromagnetic heating coils is connected in parallel by a plurality of high-temperature inductive leads.
Preferably, in the above-mentioned technical solution of the oil-electric hybrid heating apparatus,
each group of electromagnetic heating coils is respectively connected with an input and output line of the electromagnetic heating coils, and the input and output lines of each electromagnetic heating coil are connected with an electromagnetic heating host.
Preferably, in the above-mentioned technical solution of the oil-electric hybrid heating apparatus,
each group of heat transfer oil heating jackets are connected with an oil inlet manual ball valve and an oil inlet electric ball valve in series, the oil inlet manual ball valve is used for controlling the flow of heat transfer oil, and the oil inlet electric ball valve is used for controlling the on-off of the oil inlet of the heat transfer oil.
Preferably, in the above-mentioned technical solution of the oil-electric hybrid heating apparatus,
spiral guide vanes are arranged in each group of heat conducting oil heating jackets at intervals, and gaps are formed between the spiral guide vanes and the inner walls of the heat conducting oil heating jackets.
Preferably, in the above-mentioned technical solution of the oil-electric hybrid heating apparatus,
a stirrer is arranged in the combined reduced-pressure distillation reactor and is used for stirring the waste mineral oil.
Preferably, in the above-mentioned technical solution of the oil-electric hybrid heating apparatus,
and the combined evaporation reducing reactor is also provided with an electric high-temperature ball valve and an electric contact pressure gauge, and when the electric contact pressure gauge detects overpressure of pressure, the electric high-temperature ball valve is controlled to be emptied and decompressed.
Preferably, in the above-mentioned technical solution of the oil-electric hybrid heating apparatus,
the combined pressure-reducing evaporation reactor is also provided with a pressure gauge and a mechanical safety valve, the pressure gauge is used for measuring and displaying the pressure in the combined pressure-reducing evaporation reactor, and when the pressure exceeds a certain value, the mechanical safety valve is used for overpressure evacuation.
Preferably, in the above-mentioned technical solution of the oil-electric hybrid heating apparatus,
and a temperature measuring thermocouple with an oil temperature zone temperature control meter is also arranged in the combined evaporation reducing reactor and is used for measuring, displaying and controlling the heating temperature of the waste mineral oil.
Preferably, in the above-mentioned technical solution of the oil-electric hybrid heating apparatus,
the combined reduced-distillation reactor is also connected with a distillation column.
Preferably, in the above-mentioned technical solution of the oil-electric hybrid heating apparatus,
the distillation tower is provided with a gas phase temperature measuring meter and a temperature measuring thermocouple with a temperature control meter.
In the technical scheme, the oil-electricity hybrid heating device is arranged on the surface of the outer wall of the combined pressure-reducing steam reactor 1, the heat-conducting oil heating jacket and the electromagnetic heating coils are arranged in a staggered mode, heat-conducting oil heating is added on the basis of electromagnetic heating, and by means of oil-electricity hybrid heating, the lower cost and the higher safety of the heat-conducting oil heating device are achieved, and the safety and the environmental friendliness of electric heating are also exerted.
Drawings
FIG. 1 is a schematic diagram of an oil-electric hybrid heating apparatus for regenerating base oil from waste mineral oil according to an embodiment of the present invention;
FIG. 2 is a structural diagram of an oil-electric hybrid heating apparatus for regenerating base oil from waste mineral oil according to an embodiment of the present invention;
illustration of the drawings: the device comprises a combined reduced-pressure distillation reactor 1, electromagnetic heating coils 2, 4, 6, 8, 10 and 12, heat-conducting oil heating jackets 3, 5, 7, 9, 11 and 13, jacket oil inlet pipes 14, oil inlet electric ball valves 15, oil inlet manual ball valves 16, oil inlet distribution pipes 17, jacket oil inlet automatic control electric ball valves 18, an oil inlet main pipe 19, jacket oil return branch pipe electric ball valves 20, jacket oil return main pipe electric ball valves 21, an oil inlet and return short-circuit pipe 22, a short-circuit electric ball valve 23, an oil return low-level tank electric ball valve 24, an oil return low-level tank pipeline 25, an oil return main pipe 26, an electromagnetic heating coil input and output line 27, an oil return collecting pipe 28, a branch oil return pipe 29, a connecting high-level tank pipe 30, a stirrer 31, a gas phase temperature measuring meter 32, a temperature measuring thermocouple 33 with a temperature measuring meter, a distillation tower 34, an electric high-temperature ball valve 35, an electric contact pressure meter 36, a, the oil temperature is provided with a temperature-measuring thermocouple 45 of a temperature-control meter, and the heat-conducting oil jacket is provided with a temperature-measuring thermocouple 46-51 of the temperature-control meter.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention relates to an oil-electricity hybrid heating device for regenerating base oil by using waste mineral oil, which comprises more than two groups of mutually independent electromagnetic heating coils, wherein the electromagnetic heating coils are arranged on the outer wall of a combined evaporation reducing reactor 1 at intervals. Each independent electromagnetic heating coil of group heats the combination and subtracts the outer wall of evaporating reactor 1 respectively, and in addition, the certain distance of every independent electromagnetic heating coil of group interval avoids mutual magnetic field interference, makes the heating even, has effectively improved heating efficiency and electrothermal energy conversion efficiency.
The combined reduced pressure distillation reactor 1 is used for the reduced pressure distillation of waste mineral oil.
Besides a plurality of groups of electromagnetic heating coils, the oil-electricity hybrid heating device also comprises heat conduction oil heating jackets in the same number, and meanwhile, the number of the heat conduction oil heating jackets and the number of the electromagnetic heating coils are both between 2 and 10, so that the ratio of the number of the heat conduction oil heating jackets to the number of the electromagnetic heating coils is between 2:2 and 10: 10.
The heat conducting oil heating jackets and the electromagnetic heating coils are arranged in a staggered mode and are tightly connected with each other. It can be understood that a heat conducting oil heating jacket is arranged in the interval area of every two electromagnetic heating coils.
In the technical scheme, the oil-electricity hybrid heating device is arranged on the surface of the outer wall of the combined pressure-reducing steam reactor 1, the heat-conducting oil heating jacket and the electromagnetic heating coils are arranged in a staggered mode, heat-conducting oil heating is added on the basis of electromagnetic heating, and by means of oil-electricity hybrid heating, the lower cost and the higher safety of the heat-conducting oil heating device are achieved, and the safety and the environmental friendliness of electric heating are also exerted.
The following description will be made with reference to fig. 1 and 2 for an electromagnetic heating coil and a heat conducting oil heating jacket of a combined reduced-pressure distillation reactor, an oil-electric hybrid heating device with a capacity of 1t/h, and the attached drawings show the oil-electric hybrid heating device installed on the outer wall of the combined reduced-pressure distillation reactor 1.
(one) Combined reduced-evaporation reactor 1
The combined evaporation reducing reactor 1 has an outer diameter of 2028mm (radius of 1.014m), a cylinder length of 5000mm (5m), a length-diameter ratio of 2.5:1, and a volume of about 20m3(3.14×1.0142×5m3) The loading rate of the waste mineral oil is 50-70%.
The combined pressure reducing and steaming reactor 1 is internally provided with a stirrer 31, and the stirrer 31 extends into the cylinder body and is used for continuously stirring the waste mineral oil in the heating process of the waste mineral oil.
The combined evaporation reducing reactor 1 is also provided with an electric high-temperature ball valve 35, an electric contact pressure gauge 36, a mechanical safety valve 37 and a pressure gauge 38. Wherein, the pressure gauge 38 is used in cooperation with the mechanical safety valve 37, the pressure gauge 38 is used for measuring and displaying the pressure in the combined pressure reducing and steaming reactor 1, and when the pressure exceeds a certain value, the mechanical safety valve 37 is used for overpressure evacuation. In addition, the electric contact pressure gauge 36 is used in cooperation with the electric high-temperature ball valve 35, and when the electric contact pressure gauge 36 detects overpressure in the combined pressure-reducing and steaming reactor 1, the electric contact pressure gauge 36 sends a signal to control the electric high-temperature ball valve 35 to exhaust and release pressure.
The combined pressure-reducing evaporation reactor 1 is also internally provided with an oil temperature thermocouple 45 with a temperature control meter, and the temperature thermocouple is used for measuring, displaying and controlling the heating temperature of the waste mineral oil.
The combined reduced-pressure distillation reactor 1 is also connected to a distillation column 34, and the distillation column 34 is used for gas-liquid separation. The distillation tower 34 is provided with a gas phase temperature measuring meter 32 and a temperature thermocouple 33 with a temperature control meter, the gas phase temperature measuring meter 32 is used for measuring and displaying gas phase temperature, and the temperature thermocouple 33 with the temperature control meter is used for measuring and displaying and controlling gas phase temperature. The gas phase temperature measuring meter 32 and the temperature measuring thermocouple 33 with the temperature control meter are both K-type thermocouples, the gas phase temperature measuring meter 32 is a mechanical thermometer, the measuring range is 0-500 ℃, heating is stopped when the temperature of the temperature measuring thermocouple 33 with the temperature control meter is too high, and the measuring range is-0.1 Mpa to 0.9 Mpa.
(II) electromagnetic heating coil and heat conducting oil heating jacket
The description is made in terms of installation height, number and structure.
(1) Height of heat conducting oil heating jacket and electromagnetic heating coil
According to the capacity of the oil-electricity hybrid heating device, namely the quantity of the waste mineral oil heated and evaporated in each hour is different, the height of the heat conduction oil heating jacket is between 200 and 500mm, and the installation height of the electromagnetic heating coil is between 200 and 500 mm.
The height of a heat conduction oil heating jacket (the distance between two groups of electromagnetic heating coils) in the designed oil-electricity hybrid heating device is 400mm, and the heat exchange area of each heat conduction oil heating jacket is 2.5 square meters (2 multiplied by 3.14 multiplied by 1.014 multiplied by 0.4). The installation height (the distance between two heat conducting oil heating jackets) of each group of the electromagnetic heating coils with the power of 30 kilowatts and the power of 30kW is just 300mm, and the two distances are optimal for the technical parameters for installing the oil-electricity hybrid heating device with the capacity of 1 t/h. Firstly, the 400mm distance just avoids the interference between two 30kW electromagnetic coils, and the defects that two groups of coils cannot work simultaneously and even parts such as a host capacitor and the like are burnt due to the electromagnetic interference between the coils are eliminated. Secondly, the spacing of 300mm just matches the installation of a 30kW electromagnetic heating coil, and the inductance is optimal.
(2) Number of heat conducting oil heating jackets and electromagnetic heating coils
The oil-electricity mixed heating device comprises 6 groups of electromagnetic heating coils and 6 heat-conducting oil heating jackets, wherein the electromagnetic heating coils and the heat-conducting oil heating jackets are alternately arranged and cover a part from 760mm at the lower end of a cone of the combined evaporation reducing reactor 1 to 3550mm of the height of a cylinder body, so that the oil-electricity mixed heating device with the heat exchange area of 27 square meters (2 multiplied by 3.14 multiplied by 1.014 multiplied by 3.550+0.760)) is formed, and the requirement of the capacity of 1t/h is met.
(3) Structure of heat-conducting oil heating jacket and electromagnetic heating coil
4 pieces of 4mm electromagnetic heating coils are selected for each group2The high-temperature inductance leads are connected in parallel to replace the traditional single 12mm2The surface area of the high-temperature inductance lead selected by the invention is 12mm larger than that of the traditional single high-temperature inductance lead2The high-temperature inductance has large lead, large magnetic flux and high electrothermal conversion rate.
The inner layer of the electromagnetic heating coil is an epoxy resin plate with the thickness of 0.5mm, and aluminum silicate fiber heat-insulating cotton with the thickness of 50mm is arranged in the epoxy resin plate. It can be understood that the outer wall of the combined pressure reducing and steaming reactor 1 is wrapped with aluminum silicate fiber heat-insulating cotton, the exterior of the aluminum silicate fiber heat-insulating cotton is wrapped with an epoxy resin plate, and the electromagnetic heating coil is wound on the epoxy resin plate.
Spiral guide vanes with the pitch of 103mm are arranged in each group of heat conduction oil heating jackets, the width of each vane is 60mm, and the gap between each vane and the inner wall of each jacket is 26mm, so that a fluid model with laminar flow as a main part and turbulent flow as an auxiliary part after heat conduction oil enters the jacket is formed.
On the basis of 6 groups of electromagnetic heating coils and 6 heat-conducting oil heating jackets, each heat-conducting oil heating jacket is provided with a heat-conducting oil jacket with a temperature-measuring thermocouple of a temperature-measuring meter, and the heat-conducting oil jacket can be independently controlled to be started and stopped; in addition, each group of electromagnetic heating coils is provided with an electromagnetic heating coil with a temperature measuring thermocouple of a temperature control meter, can be independently controlled to be started and stopped, and can set heating temperature according to production requirements. And conducting oil is switched on for heating according to the low-temperature energy-saving requirement, and the short plate with low heating temperature of the conducting oil is compensated by switching on electromagnetic heating and switching off the heating of the conducting oil at high temperature.
The 6 groups of electromagnetic heating coils are respectively designated by a first electromagnetic heating coil 2, a second electromagnetic heating coil 4, a third electromagnetic heating coil 6, a fourth electromagnetic heating coil 8, a fifth electromagnetic heating coil 10 and a sixth electromagnetic heating coil 12, and the 6 heat-conducting oil heating jackets are respectively designated by a first heat-conducting oil heating jacket 3, a second heat-conducting oil heating jacket 5, a third heat-conducting oil heating jacket 7, a fourth heat-conducting oil heating jacket 9, a fifth heat-conducting oil heating jacket 11 and a sixth heat-conducting oil heating jacket 13.
The 6 groups of electromagnetic heating coils, namely the first electromagnetic heating coil 2, the second electromagnetic heating coil 4, the third electromagnetic heating coil 6, the fourth electromagnetic heating coil 8, the fifth electromagnetic heating coil 10 and the sixth electromagnetic heating coil 12 are respectively provided with a first electromagnetic heating coil temperature thermocouple 39 with a temperature control meter, a second electromagnetic heating coil temperature thermocouple 40 with a temperature control meter, a third electromagnetic heating coil temperature thermocouple 41 with a temperature control meter, a fourth electromagnetic heating coil temperature thermocouple 42 with a temperature control meter, a fifth electromagnetic heating coil temperature thermocouple 43 with a temperature control meter and a sixth electromagnetic heating coil temperature thermocouple 44 with a temperature control meter.
The 6 heat-conducting oil heating jackets (a heat-conducting oil heating jacket I3, a heat-conducting oil heating jacket II 5, a heat-conducting oil heating jacket III 7, a heat-conducting oil heating jacket IV 9, a heat-conducting oil heating jacket V11 and a heat-conducting oil heating jacket VI 13) are respectively provided with a heat-conducting oil jacket with a temperature-measuring thermocouple I46, a heat-conducting oil jacket with a temperature-measuring thermocouple II 47, a heat-conducting oil jacket with a temperature-measuring thermocouple III 48, a heat-conducting oil jacket with a temperature-measuring thermocouple IV 49, a heat-conducting oil jacket with a temperature-measuring thermocouple V50 and a heat-conducting oil jacket with a temperature-measuring thermocouple VI 51.
By adopting the technical scheme, the oil-electricity hybrid heating device designed by the invention has three working modes, and different production requirements are met.
The first working mode oil-electricity hybrid heating device has 6 groups of electromagnetic heating coils and 6 heat-conducting oil heating jackets which are all put into operation simultaneously, and meets the working requirements of rapid production and full load.
The second working mode is that 6 groups of electromagnetic heating coils and 6 heat-conducting oil heating jackets of the oil-electricity hybrid heating device are put into operation in stages, when the temperature of waste mineral oil heated in the combined pressure-reducing and steaming reactor 1 is below 300 ℃, the 6 heat-conducting oil heating jackets are all put into operation, the temperature reaches 300 ℃ or above, the heat-conducting oil heating is turned off, the 6 groups of electromagnetic heating coils are started for heating, the temperature is continuously raised to a set temperature, and the requirements of energy-saving production and heating cost reduction are met.
The third working mode is that the 6 groups of electromagnetic heating coils and the 6 heating jackets of the oil-electricity hybrid heating device are all put into operation simultaneously. Meanwhile, from bottom to top, i.e., from the 1 st group of electromagnetic heating coils to the 6 th group of electromagnetic heating coils, the set temperatures are stepwise increased from low to high, and are generally set as: 240 deg.C, 260 deg.C, 280 deg.C, 300 deg.C, 320 deg.C. Simultaneously, the waste mineral oil with water and first oil removed is continuously and equivalently added into the combined reduced evaporation reactor 1, the oil inlet flow is adjusted, the temperature of the oil liquid is increased in a step shape from bottom to top, the purpose of constant temperature vaporization and evaporation of high-level waste mineral oil liquid at about 300 ℃ is achieved, the heating temperature and the oil liquid temperature have a 10-20 ℃ temperature difference, and the requirement of a constant temperature evaporator is met.
The working flow of the oil inlet of the heat conducting oil is as follows:
the oil inlet main pipe 19 is connected with the oil inlet distribution pipe 17 through a pipeline, and a jacket oil inlet self-control electric ball valve 18 is arranged on the pipeline. The oil inlet distribution pipe 17 is respectively connected with the heat-conducting oil heating jacket I3, the heat-conducting oil heating jacket II 5, the heat-conducting oil heating jacket III 7, the heat-conducting oil heating jacket IV 9, the heat-conducting oil heating jacket V11 and the heat-conducting oil heating jacket VI 13 through the jacket oil inlet pipe 14 one by one, the jacket oil inlet pipe 14 is provided with an oil inlet manual ball valve 16 and an oil inlet electric ball valve 15 which are connected in series, the oil inlet manual ball valve 16 performs a flow adjusting function, and the oil inlet electric ball valve 15 performs a switching function.
The working flow of the heat conduction oil return is as follows:
6 heat-conducting oil heating jackets (a heat-conducting oil heating jacket I3, a heat-conducting oil heating jacket II 5, a heat-conducting oil heating jacket III 7, a heat-conducting oil heating jacket IV 9, a heat-conducting oil heating jacket V11 and a heat-conducting oil heating jacket VI 13) are respectively connected with branch oil return pipes 29 one by one, the branch oil return pipes 29 are provided with jacket oil return branch pipe electric ball valves 20, the six branch oil return pipes 29 are respectively connected with an oil return header pipe 26 through oil return collecting pipes 28, and the oil return header pipe 26 is provided with a jacket oil return header pipe electric.
The oil inlet and return short-circuit pipe 22 is respectively connected with the oil return main pipe 26 and the oil inlet main pipe 19, and the oil inlet and return short-circuit pipe 22 is connected with the short-circuit electric ball valve 23 in series. The short circuit electric ball valve 23 is used for: the heat conducting oil heating jacket stops working; the quantity of heat-conducting oil needed by the heat-conducting oil heating jacket is reduced; and cooling heat conducting oil circulation of the heat conducting oil heating furnace. The short circuit electric ball valve is closed at ordinary times.
The oil inlet main pipe 19 is also connected with an oil return low-level tank pipeline 25, and an oil return low-level tank electric ball valve 24 is arranged on the oil return low-level tank pipeline 25. The oil return low tank pipeline 25 is used for conveying oil, and the oil return low tank electric ball valve 24 is opened and closed at ordinary times.
The return oil collecting pipe 28 is also connected with a connecting elevated tank pipe 30 for oil pumping, oil supplementing and air exhausting.
Each group of electromagnetic heating coils is connected with an input and output line 27 of the electromagnetic heating coils, and the input and output lines 27 of the electromagnetic heating coils are connected with corresponding electromagnetic heating hosts respectively.
Compared with 4 heating devices in the background art, the oil-electric hybrid heating device has the following advantages:
1. and is safer. Both the tubular furnace heating device and the hot blast furnace heating device have the defect that the waste mineral oil carrier is directly heated by utilizing flame and hot air, and when the waste mineral oil carrier leaks, fire or explosion is inevitable. The oil-electricity mixed heating device does not have the direct heating of flame and hot air of a waste mineral oil carrier, the set temperature of the electromagnetic heating coil is only 10-20 ℃ higher than the temperature of the waste mineral oil, and the heating temperature is much lower than the temperature of the flame and the hot air at 320 ℃ or below. Because the oil-electricity hybrid heating device only starts electromagnetic heating at the high temperature of 300 ℃ and above, the safety is not inferior to that of a pure heat conduction oil heating device.
2. Compared with an electric heating device, the electric heating device saves energy and reduces cost. The oil-electricity hybrid heating device usually starts the heat conducting oil heating jacket when the temperature of oil is lower than 300 ℃, starts the electromagnetic heating coil when the temperature of oil is higher than 300 ℃, and greatly reduces the energy consumption and the cost compared with the heating by only using an electric heating device. Compared with other 3 heating devices, the oil-electricity hybrid heating device has the advantages that the energy consumption and the cost are relatively close, and the height is not much higher.
3. Can realize various working modes and meet the production requirement of intermittent or continuous oil production.
The first working mode firepower of the oil-electricity hybrid heating device is fully opened, and the requirements of quick production and full-load working can be met.
In the second working mode, the heat conduction oil is started for heating according to the low-temperature energy-saving requirement, and the short plate with low heating temperature of the heat conduction oil is compensated by switching on the electromagnetic heating at high temperature and switching off the heating of the heat conduction oil. Can meet the requirements of energy-saving production and heating cost reduction. The two working conditions can meet the requirement of batch production of the combined pressure-reducing distillation reactor 1.
In the third working mode, 6 groups of electromagnetic heating coils are arranged from bottom to top, the set temperature is stepped from low to high, simultaneously, the waste mineral oil with water and the first oil removed is continuously and equivalently added into the combined evaporation reducing reactor 1, the oil inlet flow is adjusted, the temperature of the oil liquid is increased in a step shape from bottom to top, the purpose that the high-level waste mineral oil is vaporized and evaporated at the constant temperature of about 300 ℃ is achieved, the heating temperature and the temperature of the oil liquid usually have the temperature difference of 10-20 ℃, and the requirement of a constant temperature evaporator is met. The working condition can meet the requirement of continuous production of the combined pressure reducing and steaming reactor 1 by matching with an independent pressure reducing tower.
4. The combined evaporation reducing reactor 1 has less coking and improves the working efficiency. Compared with the first 3 heating devices, the oil-electric hybrid heating device has lower heating temperature, the lower the heating temperature is, the lower the chance of coking the waste mineral oil is, the fewer times of cleaning a tar layer is, and the working efficiency is naturally improved.
5. The structure is compact. The core of the invention is that on the outer wall of the combined reduced pressure distillation reactor 1 for heating and reduced pressure distillation, a certain spacing distance is required to be opened by each group of independent electromagnetic heating coils, the inherent characteristic of mutual magnetic field interference is avoided, and a heat conducting oil heating jacket is ingeniously designed and installed on the spacing distance of the electromagnetic heating coils, so that the oil-electricity mixed heating of waste oil regeneration is realized. Compared with an electric heating device, the heat conducting oil heating jacket is arranged in the neutral zone which is originally heated, so that the structure becomes compact. In other words, the combined reduced pressure distillation reactor 1 has the same height, and the heat exchange area is increased.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. An oil-electricity hybrid heating device for regenerating base oil by using waste mineral oil is characterized by comprising an electromagnetic heating coil and a heat-conducting oil heating jacket, wherein the electromagnetic heating coil and the heat-conducting oil heating jacket are alternately arranged on the surface of the outer wall of a combined evaporation reducing reactor in a staggered manner; each heat-conducting oil heating jacket is connected with a temperature-measuring thermocouple with a temperature-measuring meter of the heat-conducting oil jacket and is used for controlling the heat-conducting oil heating jacket to work or close; each electromagnetic heating coil is connected with a temperature measuring thermocouple of the electromagnetic heating coil with a temperature control meter and is used for setting all the electromagnetic heating coils to be at the same heating temperature or the temperature is gradually increased from bottom to top; the electromagnetic heating coil and the heat conducting oil heating jacket work simultaneously or alternatively.
2. The oil-electric hybrid heating device as claimed in claim 1, wherein the height of the heat-conducting oil heating jacket is 200-500mm, the installation height of the electromagnetic heating coil is 200-500mm, the number of the heat-conducting oil heating jacket and the number of the electromagnetic heating coil are the same, and the number of the heat-conducting oil heating jacket and the number of the electromagnetic heating coil are both 2-10.
3. A hybrid oil-electric heating apparatus as claimed in claim 1, wherein in an alternative operation, the conduction oil heating jacket is operated and the electromagnetic heating coils are turned off when the temperature of the waste mineral oil is lower than a set value, and the conduction oil heating jacket is turned off when the temperature of the waste mineral oil is higher than the set value, and all the electromagnetic heating coils are operated at the same temperature or are operated at increasing temperatures stepwise from bottom to top.
4. The oil-electric hybrid heating device as claimed in claim 1, wherein the outer wall of the combined evaporation reducing reactor is wrapped with aluminum silicate fiber heat insulation cotton, the exterior of the aluminum silicate fiber heat insulation cotton is wrapped with an epoxy resin plate, and the electromagnetic heating coil is wound on the epoxy resin plate.
5. The oil-electric hybrid heating device according to claim 1, wherein each group of electromagnetic heating coils is connected in parallel by a plurality of high-temperature inductive wires, each group of electromagnetic heating coils is connected with an input/output line of the electromagnetic heating coils, and each input/output line of the electromagnetic heating coils is connected with the electromagnetic heating host.
6. The oil-electric hybrid heating device according to claim 1, wherein each group of the heat transfer oil heating jackets are connected in series with an oil inlet manual ball valve and an oil inlet electric ball valve, the oil inlet manual ball valve is used for controlling the flow of the heat transfer oil, and the oil inlet electric ball valve is used for controlling the on-off of the oil inlet of the heat transfer oil.
7. The oil-electric hybrid heating device according to claim 1, wherein each group of the heat-conducting oil heating jackets are internally provided with spiral guide vanes which are arranged at intervals, and a gap is formed between each spiral guide vane and the inner wall of the heat-conducting oil heating jacket.
8. An oil-electric hybrid heating apparatus as claimed in claim 1, wherein a stirrer is provided in the combined pressure-reducing reactor for stirring the waste mineral oil.
9. The oil-electric hybrid heating device according to claim 1, wherein the combined pressure-reducing and steaming reactor is further provided with an electric high-temperature ball valve and an electric contact pressure gauge, and when the electric contact pressure gauge detects overpressure of pressure, the electric high-temperature ball valve is controlled to be evacuated and decompressed; the combined pressure-reducing evaporation reactor is also provided with a pressure gauge and a mechanical safety valve, the pressure gauge is used for measuring and displaying the pressure in the combined pressure-reducing evaporation reactor, when the pressure exceeds a certain value, the mechanical safety valve is used for overpressure evacuation, and the combined pressure-reducing evaporation reactor is also internally provided with an oil temperature thermocouple with a temperature control meter and used for measuring, displaying and controlling the heating temperature of the waste mineral oil.
10. The oil-electric hybrid heating device according to claim 1, wherein the combined evaporation reducing reactor is further connected with a distillation tower, and the distillation tower is provided with a gas phase temperature measuring meter and a temperature measuring thermocouple with a temperature control meter.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115283215A (en) * | 2022-07-18 | 2022-11-04 | 江苏中关村嘉拓新能源设备有限公司 | Oil-electricity hybrid heat exchange system |
| CN115978339A (en) * | 2022-10-18 | 2023-04-18 | 彭军 | Electric heating hose with temperature control device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201811413U (en) * | 2010-09-10 | 2011-04-27 | 白树发 | Electromagnetic heat exchanger |
| CN102711300A (en) * | 2012-06-20 | 2012-10-03 | 北京绿创生态科技有限公司 | Pipe electromagnetism heating device and electromagnetism heating method |
| CN105402705A (en) * | 2015-11-07 | 2016-03-16 | 江深 | Conduction oil electromagnetic steam heater |
| CN106521856A (en) * | 2016-12-24 | 2017-03-22 | 连云港鹰游工程技术研究院有限公司 | Dual-purpose oil-electric energy-saving lustering roller |
| CN106914204A (en) * | 2015-12-28 | 2017-07-04 | 刘方旭 | The quick temperature raising reactor of hot coil in a kind of electric heating external jacket auxiliary |
| CN106957679A (en) * | 2017-04-14 | 2017-07-18 | 海南巨澜新能源有限公司 | A kind of Electromagnetic Heating processing waste oil system and its technique |
| CN108716766A (en) * | 2018-06-01 | 2018-10-30 | 青岛中科鹏润节能技术有限公司 | A kind of oil product electromagnetic heater |
| CN208282406U (en) * | 2018-04-20 | 2018-12-25 | 盐城市光明电热电器制造有限公司 | A kind of heating structure of heat-conducting oil furnace |
| CN209631177U (en) * | 2018-12-14 | 2019-11-15 | 威海汇鑫化工机械有限公司 | Composition heating type reaction kettle |
-
2021
- 2021-01-19 CN CN202110069505.3A patent/CN112843763B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201811413U (en) * | 2010-09-10 | 2011-04-27 | 白树发 | Electromagnetic heat exchanger |
| CN102711300A (en) * | 2012-06-20 | 2012-10-03 | 北京绿创生态科技有限公司 | Pipe electromagnetism heating device and electromagnetism heating method |
| CN105402705A (en) * | 2015-11-07 | 2016-03-16 | 江深 | Conduction oil electromagnetic steam heater |
| CN106914204A (en) * | 2015-12-28 | 2017-07-04 | 刘方旭 | The quick temperature raising reactor of hot coil in a kind of electric heating external jacket auxiliary |
| CN106521856A (en) * | 2016-12-24 | 2017-03-22 | 连云港鹰游工程技术研究院有限公司 | Dual-purpose oil-electric energy-saving lustering roller |
| CN106957679A (en) * | 2017-04-14 | 2017-07-18 | 海南巨澜新能源有限公司 | A kind of Electromagnetic Heating processing waste oil system and its technique |
| CN208282406U (en) * | 2018-04-20 | 2018-12-25 | 盐城市光明电热电器制造有限公司 | A kind of heating structure of heat-conducting oil furnace |
| CN108716766A (en) * | 2018-06-01 | 2018-10-30 | 青岛中科鹏润节能技术有限公司 | A kind of oil product electromagnetic heater |
| CN209631177U (en) * | 2018-12-14 | 2019-11-15 | 威海汇鑫化工机械有限公司 | Composition heating type reaction kettle |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115283215A (en) * | 2022-07-18 | 2022-11-04 | 江苏中关村嘉拓新能源设备有限公司 | Oil-electricity hybrid heat exchange system |
| CN115978339A (en) * | 2022-10-18 | 2023-04-18 | 彭军 | Electric heating hose with temperature control device |
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| CN112843763B (en) | 2022-07-22 |
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Effective date of registration: 20231008 Address after: 536005 Within Hepu Industrial Park, Beihai City, Guangxi Zhuang Autonomous Region Patentee after: Beihai Tongli Environmental Protection Technology Co.,Ltd. Address before: No.12, zhuangliang 1st Road, xiaotoyota Industrial Zone, Luocun Wuzhuang, Shishan town, Nanhai District, Foshan City, Guangdong Province Patentee before: FOSHAN HEZHICHENG ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. |