CN215947199U - Pretreatment system device for waste mineral oil regeneration - Google Patents
Pretreatment system device for waste mineral oil regeneration Download PDFInfo
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- CN215947199U CN215947199U CN202121992823.9U CN202121992823U CN215947199U CN 215947199 U CN215947199 U CN 215947199U CN 202121992823 U CN202121992823 U CN 202121992823U CN 215947199 U CN215947199 U CN 215947199U
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Abstract
The utility model discloses a pretreatment system device for waste mineral oil regeneration, which comprises a raw material tank, a hydrogen heating furnace, a static mixer, a flash tank, a pressure reduction tower, a reactor filled with dechlorination and heavy metal removal catalysts and a gas-liquid separation tank, wherein the raw material tank is connected with the hydrogen heating furnace; the utility model solves the problem of coking and blockage in a heating furnace, a decompression tower and a heat exchanger in the waste mineral oil pretreatment process by a combined device which heats hydrogen, statically mixes the hydrogen with the waste mineral oil and then carries out flash evaporation; the aim of removing chlorine and heavy metals is fulfilled efficiently by the hydrogen process, and the conditions are optimized for the protection of the subsequent high-pressure hydrofining catalyst.
Description
Technical Field
The utility model relates to the technical field of waste mineral oil regeneration, in particular to a pretreatment system device for waste mineral oil regeneration.
Background
The waste mineral oil is oil which is changed when the waste mineral oil cannot be used continuously due to the change of the original physical and chemical properties under the actions of impurity pollution, oxidation and heat; mainly comes from oil sludge and oil foot produced by oil extraction and refining; deposits produced during the warehousing of mineral oils; oil residue and filter medium in the process of oil replacement and regeneration of machinery, power, transportation and other equipment. The waste mineral oil is mainly hydrocarbon substances with relatively small carbon atoms, and is mostly unsaturated hydrocarbon. The main component of the catalyst is hydrocarbons with different chain lengths, and the performance is stable.
The existing regeneration pretreatment process of waste mineral oil usually uses equipment such as a heating furnace, a decompression tower, a heat exchanger and the like. The devices can be coked and blocked, so that the problem of short operation period is caused, the inspection and maintenance times are increased, the efficiency of the device is lower, and the production period is prolonged. In addition, the prior art has low efficiency in dechlorinating and removing heavy metals.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a pretreatment system device for waste mineral oil regeneration. The combined device for heating hydrogen, statically mixing the hydrogen with the waste mineral oil and then flashing solves the problem of coking and blockage in a heating furnace, a decompression tower and a heat exchanger in the waste mineral oil pretreatment process; the aim of removing chlorine and heavy metals is fulfilled efficiently by the hydrogen process, and the conditions are optimized for the protection of the subsequent high-pressure hydrofining catalyst.
In order to solve the technical problem, the utility model adopts the following technical scheme:
a pretreatment system device for regenerating waste mineral oil comprises a raw material tank, a hydrogen heating furnace, a static mixer, a flash tank, a decompression tower, a reactor filled with dechlorination and heavy metal removal catalysts and a gas-liquid separation tank;
the raw material tank is communicated with an inlet of the static mixer through a first pipeline;
the outlet of the static mixer is communicated with the inlet of the flash tank through a second pipeline;
the top outlet of the flash tank is communicated with the inlet of the reactor filled with the catalyst for dechlorination and heavy metal removal through a third pipeline;
the outlet of the reactor filled with the catalyst for dechlorination and heavy metal removal is communicated with the inlet in the middle of the gas-liquid separation tank through a fourth pipeline;
an outlet at the top of the gas-liquid separation tank is communicated with an inlet of the hydrogen heating furnace through a fifth pipeline, and a pretreated product outlet is formed at the bottom of the gas-liquid separation tank;
the outlet of the hydrogen heating furnace is communicated with the first pipeline through a sixth pipeline;
an outlet at the bottom end of the flash tank is communicated with an inlet of the pressure reducing tower through a seventh pipeline;
the vacuum tower is provided with an upper pre-treatment product outlet and a bottom asphaltene outlet.
Any range recited herein is intended to include the endpoints and any number between the endpoints and any subrange subsumed therein or defined therein.
The starting materials of the present invention are commercially available, unless otherwise specified, and the equipment used in the present invention may be any equipment conventionally used in the art or may be any equipment known in the art.
Compared with the prior art, the utility model has the following beneficial effects:
1. the industrial problems that the long-period start-up is influenced by coking and blockage generated in the heating process of the waste mineral oil heat-sensitive medium are effectively solved.
2. Under the condition of solving the problem of coking and blocking in the technical process, the aim of removing chlorine and heavy metals by hydrogen is fulfilled.
Drawings
The following detailed description of embodiments of the utility model is provided in connection with the accompanying drawings
FIG. 1 is a schematic view of the structure of the present invention.
Detailed Description
In order to more clearly illustrate the utility model, the utility model is further described below in connection with preferred embodiments. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the utility model.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the utility model.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
As one aspect of the present invention, the present invention is a pretreatment system apparatus for waste mineral oil regeneration, comprising:
a raw material tank 1 for storing and outputting a waste mineral oil raw material;
a hydrogen heating furnace 2 for heating the hydrogen for recycling;
a static mixer 3 for sufficiently mixing the circulating hydrogen gas and the waste mineral oil;
a flash tank 4 for separation of hydrogen from liquid;
a vacuum tower 5 for separating the pre-treated product and waste asphaltenes;
a reactor 6 containing a catalyst for dechlorination and heavy metal removal;
a gas-liquid separation tank 7 for separating the circulating hydrogen gas and the liquid pretreatment product;
the raw material tank 1 is communicated with an inlet of the static mixer 3 through a first pipeline 11;
the outlet of the static mixer 3 is communicated with the inlet of the flash tank 4 through a second pipeline 12;
the top outlet of the flash tank 4 is communicated with the inlet of the reactor 6 filled with dechlorination and heavy metal removal catalysts through a third pipeline 13;
the outlet of the reactor 6 filled with the catalyst for dechlorination and heavy metal removal is communicated with the inlet of the middle part of the gas-liquid separation tank 7 through a fourth pipeline 14;
an outlet at the top of the gas-liquid separation tank 7 is communicated with an inlet of the hydrogen heating furnace 2 through a fifth pipeline 15, and a pretreated product outlet 71 is arranged at the bottom of the gas-liquid separation tank 7;
the outlet of the hydrogen heating furnace 2 is communicated with the first pipeline 11 through a sixth pipeline 16;
the outlet at the bottom end of the flash tank 4 is communicated with the inlet of the vacuum tower 5 through a seventh pipeline 17;
the vacuum column 5 is provided with an upper pretreated product outlet 51 and a bottom asphaltene outlet 52.
Compared with the prior art, the utility model has the main difference that the hydrogen heating furnace 2 is additionally arranged in the system device, so that the mode of heating the waste mineral oil raw material by using hot hydrogen is an important characteristic of the utility model.
The use mode of the utility model is as follows: heating hydrogen to the temperature of 430 ℃ in a hydrogen heating furnace, fully mixing the hydrogen with the waste mineral oil in a static mixer to ensure that the mixed temperature is up to 390 ℃ in 370 ℃ so as to achieve the purposes of hydrodechlorination and heavy metal removal, and then entering a flash tank for gas-liquid separation; the liquid phase part enters a reduced pressure distillation tower to remove colloid asphaltene containing heavy metals from the bottom of the tower, and the gas phase part enters a reactor filled with a catalyst for removing the heavy metals and dechlorinating to remove the heavy metals again.
A comparison of the properties of the waste mineral oils before and after being prehydrogenated by the pretreatment system apparatus of the present invention is shown in the following table:
| item | Raw materials | Pre-hydrogenated product |
| Density (20.0 deg.C), g.cm-3 | 0.868 | 0.860 |
| Color intensity | >8.5 | 1.5 |
| Kinematic viscosity, mm2.s-1 | ||
| 40℃ | 52.0 | 48.6 |
| 100℃ | 9.05 | 6.60 |
| Pour point, DEG C | -30 | -15 |
| Flash point, DEG C | 169 | 40 |
| Acid value, mgKOH. g-1 | 0.71 | 0.01 |
| Sulfur content, μ g/g | 0.35 | 0.20 |
| Nitrogen content,. mu.g/g | 1900 | 978 |
| Chlorine content, μ g.g-1 | 240 | 2.1 |
| Carbon residue,% (m) | 0.89 | 0.01 |
| Water,% (m) | 3.5 | - |
| Total Metal content, μ g.g-1 | 2070 | ＜8 |
| Ca | 1764 | 2.5 |
| Fe | 203 | 1.5 |
| Na | 20.2 | ＜0.5 |
| Ni | 0.2 | - |
| V | 2.3 | 0.6 |
| Cu | 25.3 | ＜0.5 |
| Mg | 24 | ＜0.5 |
| Pb | 6.9 | - |
| Al | 17.9 | - |
| K | 5.8 | ＜0.5 |
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. Not all embodiments are exhaustive. All obvious changes and modifications which are obvious to the technical scheme of the utility model are covered by the protection scope of the utility model.
Claims (1)
1. A pretreatment system device for waste mineral oil regeneration is characterized in that: comprises a raw material tank, a hydrogen heating furnace, a static mixer, a flash tank, a decompression tower, a reactor filled with dechlorination and heavy metal removal catalysts and a gas-liquid separation tank;
the raw material tank is communicated with an inlet of the static mixer through a first pipeline;
the outlet of the static mixer is communicated with the inlet of the flash tank through a second pipeline;
the top outlet of the flash tank is communicated with the inlet of the reactor filled with the catalyst for dechlorination and heavy metal removal through a third pipeline;
the outlet of the reactor filled with the catalyst for dechlorination and heavy metal removal is communicated with the inlet in the middle of the gas-liquid separation tank through a fourth pipeline;
an outlet at the top of the gas-liquid separation tank is communicated with an inlet of the hydrogen heating furnace through a fifth pipeline, and a pretreated product outlet is formed at the bottom of the gas-liquid separation tank;
the outlet of the hydrogen heating furnace is communicated with the first pipeline through a sixth pipeline;
an outlet at the bottom end of the flash tank is communicated with an inlet of the pressure reducing tower through a seventh pipeline;
the vacuum tower is provided with an upper pre-treatment product outlet and a bottom asphaltene outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121992823.9U CN215947199U (en) | 2021-08-23 | 2021-08-23 | Pretreatment system device for waste mineral oil regeneration |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121992823.9U CN215947199U (en) | 2021-08-23 | 2021-08-23 | Pretreatment system device for waste mineral oil regeneration |
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| Publication Number | Publication Date |
|---|---|
| CN215947199U true CN215947199U (en) | 2022-03-04 |
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| CN202121992823.9U Active CN215947199U (en) | 2021-08-23 | 2021-08-23 | Pretreatment system device for waste mineral oil regeneration |
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- 2021-08-23 CN CN202121992823.9U patent/CN215947199U/en active Active
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