CN212713372U - Light hydrocarbon oil alkali washing desulfurization and oil-water separation tank for waste mineral oil hydrogenation regeneration - Google Patents
Light hydrocarbon oil alkali washing desulfurization and oil-water separation tank for waste mineral oil hydrogenation regeneration Download PDFInfo
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- CN212713372U CN212713372U CN202021314025.6U CN202021314025U CN212713372U CN 212713372 U CN212713372 U CN 212713372U CN 202021314025 U CN202021314025 U CN 202021314025U CN 212713372 U CN212713372 U CN 212713372U
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Abstract
The utility model relates to a waste mineral oil hydrogenation regeneration light hydrocarbon oil alkali wash desulfurization and oil-water separator jar, include: the device comprises a shell, a feeding mixing pipe, an alkali washing cabin, a buffer separation cabin, an oil-water separation cabin, a drainage cabin and an oil drainage cabin. The utility model discloses a wash the hydrogen sulfide that dissolves in the useless lubricating oil hydrogenation regeneration light hydrocarbon oil of desorption with alkaline, mix the liquid and subside through twice gravity again and separate for the profit is double-phase, can prepare sodium hydrosulfide solution accessory substance after alkali lye recycles. The alkaline washing desulfurization and oil-water separation tank has the characteristics of high hydrogen sulfide removal efficiency, low water content in an oil phase, economy, environmental protection and low operation cost.
Description
Technical Field
The utility model relates to a mechanical equipment technical field is handled to waste mineral oil, a waste mineral oil hydrogenation regeneration light hydrocarbon oil alkali wash desulfurization and oil-water separation jar specifically says so.
Background
Mineral oil 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 the mineral oil which can not be used continuously is called waste mineral oil. Waste mineral oil is listed in national records of dangerous waste for easily causing water quality and soil pollution, and belongs to the 8 th (HW 08) dangerous waste. High yield, low carbon, environmental protection and large-scale production become the industrial development direction of waste mineral oil treatment. The waste mineral oil hydrogenation regeneration is the most ideal treatment mode, and can slow down the energy crisis and does not cause secondary pollution. The hydrogenation regeneration comprises pretreatment (removing colloid, mechanical impurities and carbon residue, neutralizing acid value), distillation, hydrofining (removing sulfur, nitrogen, chlorine and a small amount of unsaturated hydrocarbon) and fractionation. In the process of hydrogenation regeneration of the waste lubricating oil, the sulfur component is hydrogenated and converted into hydrogen sulfide, and then the hydrogen sulfide is cut by a fractionating tower and dissolved in the light hydrocarbon component. The hydrogen sulfide gas dissolved in the light hydrocarbon components can be separated by means of steam stripping or desulfurizer adsorption, but the steam stripping equipment is complex, the operation cost is high, the desulfurizer is difficult to regenerate, and the desulfurization waste residue can be discharged. The alkaline washing desulfurization and oil-water separation tank is arranged at the rear end of the hydrogenated oil fractionating tower, so that hydrogen sulfide in light oil products can be completely removed, and sodium hydrosulfide byproducts can be produced, thus the method is economical and environment-friendly.
Disclosure of Invention
In order to overcome the shortcoming and the deficiency that exist among the prior art, the utility model aims to provide a useless mineral oil hydrogenation regeneration light hydrocarbon oil alkali wash desulfurization and oil-water separator jar to solve among the prior art the higher problem of hydrogen sulfide separation cost in the useless lubricating oil hydrogenation regeneration light hydrocarbon oil. The purpose of the utility model is realized through the following technical scheme:
the utility model provides a waste mineral oil hydrogenation regeneration light hydrocarbon oil alkali wash desulfurization and oil-water separator jar, include: the device comprises a feeding mixing pipe 1, an alkaline washing cabin 2, a buffer separation cabin 3, an oil-water separation cabin 4, a shell 5, an oil discharge cabin 6 and a water discharge cabin 7, wherein the cabins are isolated by one or two of weirs and plates.
The feeding mixing tube 1 is provided with an oil inlet tube 11, an alkaline liquid tube 12 and a static mixer 13 at the lower right side of the shell 5, and the static mixer 13 is arranged in a pipeline of the feeding port and can mix alkaline liquid and waste mineral hydrogenated oil for the first time.
The alkaline washing cabin 2 is provided with a stirrer 21 and a feeding overflow weir 22, and the oil-water mixture fully reacts under the mechanical stirring action to remove hydrogen sulfide and then overflows the feeding overflow weir 22 to enter the buffer separation cabin 3.
The right side of the buffer separation cabin 3 is provided with a feeding partition plate 31, the left side is provided with a mixing overflow weir 32, and the bottom of the cabin body is provided with an alkali liquor circulating port 33; the alkali washing mixed liquid is primarily separated in the buffer separation cabin 3, the primarily separated oil phase enters the oil-water separation cabin 4 through the mixing overflow weir 32, and the alkali liquor is conveyed to the alkali liquor circulation tank through the alkali liquor circulation port 33.
The oil-water separation cabin 4 is positioned in front of the buffer separation cabin 3, the left side of the oil-water separation cabin 4 is provided with an oil separation plate 42, the right side of the oil-water separation cabin 4 is provided with a material mixing baffle plate 41, and the rear side of the oil-water separation cabin is provided with an oil overflow weir 61; the primary oil phase is subjected to oil-water separation again under the action of gravity in the oil-water separation chamber 4, the oil phase overflows the oil overflow weir 61 and flows into the oil discharge chamber 6, and the alkali liquor flows to the water discharge chamber 7 through the lower end of the oil separation plate 42.
The oil discharge cabin 6 is positioned right behind the oil-water separation cabin 4, an oil overflow weir 61 is arranged between the oil discharge cabin 6 and the oil-water separation cabin 4, and an oil discharge port 62 is arranged at the bottom of the oil discharge cabin; the light hydrocarbon oil is delivered to the storage tank through the oil outlet 62.
The drainage tank 7 is positioned on the left side of the oil-water separation tank 4, an overflow weir 72 and an oil separation plate 42 are arranged between the drainage tank 7 and the oil-water separation tank 4, and a water outlet 71 is arranged at the bottom of the drainage tank 7; conveying the sulfur-absorbing alkali liquor to a sodium hydrosulfide by-product tank through a water outlet 71; the sodium hydrosulfide solution by-product is catalytically oxidized to prepare elemental sulfur product.
The middle part of the lower end of the oil-water separation cabin 4 is provided with a cleaning liquid outlet 44, and the top part is provided with a flame arrester 51 and an alkali liquor pre-adding pipe 52; the light hydrocarbon oil is volatile and is inflammable and explosive steam, and the flame arrester can effectively prevent flame from spreading and protect the tank body from safety; when the operation desulfurization is carried out for the first time after the tank cabin is cleaned, alkali liquor needs to be injected into the oil-water separation cabin from the alkali liquor pre-feeding pipe, so that the liquid level is higher than the lower edge of the oil separation plate and lower than the lower edge of the mixing partition plate.
Further, the water level of the alkali liquor in the oil-water separation chamber 4 must be higher than the lower edge of the oil separation plate 42 and lower than the horizontal lower edge of the mixing partition plate 41.
The included angle between the oil overflow weir 61 and the horizontal plane is 75 degrees, and the connection mode between the oil overflow weir 61 and the oil separation plate 42 and the material mixing partition plate 41 is seamless welding.
The upper edges of the feeding overflow weir 22, the mixing overflow weir 32, the oil overflow weir 61, the overflow weir 72, the oil baffle plate 42 and the lower edge of the feeding clapboard 31 are all horizontal straight edges; the lower part of the mixing partition plate 41 is provided with a horizontal straight edge and a bevel edge which forms an angle of 105 degrees with the horizontal straight edge; the upper edge of the feeding overflow weir 22 is higher than the upper edge of the mixing overflow weir 32, the upper edge of the mixing overflow weir 32 is higher than the upper edge of the oil overflow weir 61, and the upper edge of the oil overflow weir 61 is higher than the upper edge of the overflow weir 72; the lower edge of the oil baffle plate 42 is lower than the lower edge of the mixing partition plate 41, and the lower edge of the mixing partition plate 41 is lower than the lower edge of the feeding partition plate 31; the liquid level in the cabin body from right to left is gradually reduced, and the liquid can automatically flow under the action of gravity to separate oil and water phases, so that the operation cost is reduced.
Further, the weir and the plate are parallel surfaces.
The top parts of the oil separating plate 42, the mixing partition plate 41 and the feeding partition plate 31 are provided with pressure balance holes 43; the pressure balancing holes can ensure uniform pressure in each cabin, so that liquid can freely flow by gravity.
The circular arc edges of the overflow weir 72, the oil baffle plate 42, the mixing partition plate 41, the mixing overflow weir 32, the feeding partition plate 31 and the feeding overflow weir 22 are welded with the inside of the shell 5 in a seamless mode.
The utility model has the advantages that: the hydrogen sulfide removal rate is high, the hydrogen sulfide in the light hydrocarbon oil fully reacts with alkali liquor in the static mixer and the alkaline washing cabin respectively, and the content of desulfurized oil is less than 0.1 ppm; the cost is low, and compared with the traditional stripping tower, the equipment is simpler and has low operation cost; the oil-water separation effect is good, the oil phase and the water phase are subjected to two times of gravity settling separation, and the water content of the desulfurized oil is less than 5 mg/L; economic and environment-friendly, and the alkali liquor can be recycled and can be used for preparing sodium hydrosulfide solution by-products.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a left side view of the oil-water separation tank and the oil discharge tank;
in the figure: the device comprises a feeding mixing pipe 1, an alkaline washing cabin 2, a buffering separation cabin 3, an oil-water separation cabin 4, a shell 5, an oil discharge cabin 6, a water discharge cabin 7, an oil inlet pipe 11, an alkaline liquid pipe 12, a static mixer 13, a stirrer 21, a feeding overflow weir 22, a feeding partition plate 31, a mixing overflow weir 32, an alkaline liquid circulating port 33, a mixing partition plate 41, an oil separation plate 42, a pressure balance hole 43, a cleaning liquid discharge port 44, a flame arrester 51, an alkaline liquid pre-adding pipe 52, an oil overflow weir 61, an oil discharge port 62, a water discharge port 71 and an overflow weir 72.
Detailed Description
The invention will be further described with reference to specific embodiments and with reference to the accompanying drawings.
Examples
As shown in fig. 1 and fig. 2, a light hydrocarbon oil alkali washing desulfurization and oil-water separation tank for waste mineral oil hydrogenation regeneration comprises: the device comprises a feeding mixing pipe 1, an alkaline washing cabin 2, a buffer separation cabin 3, an oil-water separation cabin 4, a shell 5, an oil discharge cabin 6 and a water discharge cabin 7, wherein the cabins are isolated by one or two of weirs and plates. The feeding mixing pipe 1 is arranged at the bottom of the right side of the shell 5 and is provided with an oil inlet pipe 11, an alkali liquor pipe 12 and a static mixer 13, the static mixer 13 is arranged in a feeding pipeline, and alkali liquor and light hydrocarbon oil are mixed and subjected to alkaline washing in the static mixer 13 for the first time; a stirrer 21 and a feeding overflow weir 22 are arranged in the alkali washing cabin 2; the right side of the buffer separation cabin 3 is provided with a feeding partition plate 31, the left side is provided with a mixing overflow weir 32, and the bottom of the cabin body is provided with an alkali liquor circulating port 33; the oil-water separation cabin 4 is positioned at the left front part of the buffer separation cabin 3, the left side of the oil-water separation cabin 4 is provided with an oil separation plate 42, the right side of the oil-water separation cabin 4 is provided with a material mixing partition plate 41, the rear side of the oil separation cabin is provided with an oil overflow weir 61, the bottom of the oil separation cabin is provided with a cleaning liquid outlet 44, and the top of the oil separation cabin is provided with; the oil discharge cabin 6 is positioned right behind the oil-water separation cabin 4, an oil overflow weir 61 is arranged between the oil discharge cabin and the oil-water separation cabin 4, and an oil discharge port 62 is arranged at the bottom of the oil discharge cabin; the drainage tank 7 is positioned at the left side of the oil-water separation tank 4, an overflow weir 72 and an oil separation plate 42 are arranged between the drainage tank 7 and the oil-water separation tank 4, and a water outlet 71 is arranged at the bottom of the drainage tank 7.
The included angle between the oil overflow weir 61 and the horizontal plane is 75 degrees, and the connection mode between the oil overflow weir 61 and the oil separation plate 42 and the material mixing partition plate 41 is seamless welding; the circular arc edges of the overflow weir 72, the oil baffle plate 42, the mixing baffle plate 41, the mixing overflow weir 32, the feeding baffle plate 31 and the feeding overflow weir 22 are welded with the inside of the shell 5 in a seamless mode. The upper edges of the feeding overflow weir 22, the mixing overflow weir 32, the oil overflow weir 61, the overflow weir 72 and the lower edges of the oil baffle plate 42, the mixing partition plate 41 and the feeding partition plate 31 are all horizontal straight edges.
The upper edge of the feeding overflow weir 22 is higher than the upper edge of the mixing overflow weir 32, the upper edge of the mixing overflow weir 32 is higher than the upper edge of the oil overflow weir 61, and the upper edge of the oil overflow weir 61 is higher than the upper edge of the overflow weir 72; the lower edge of the oil baffle plate 42 is lower than the horizontal lower edge of the mixing partition plate 41, and the horizontal lower edge of the mixing partition plate 41 is lower than the lower edge of the feeding partition plate 31.
The oil baffle plate 42, the mixing partition plate 41 and the top of the feeding partition plate 31 are provided with pressure balance holes 43.
Alkali liquor is added into the oil-water separation chamber 4 through an alkali liquor pre-adding pipe 52, so that the liquid level is between the lower edge of the oil separation plate 42 and the lower edge of the mixing partition plate 41. The waste mineral oil hydrogenation regeneration light hydrocarbon oil and alkali liquor respectively enter a static mixer 13 from an oil inlet pipe 11 and an alkali liquor pipe 12 for fully mixing and alkali washing, then enter an alkali washing cabin 2 for fully reacting and removing hydrogen sulfide in an oil phase under the strong stirring and mixing of a stirrer 21, and then an oil-water mixture overflows into a buffer separation cabin 3 from the top of a feeding overflow weir 22. In the buffer separation cabin 3, the oil-water mixture is primarily separated under the action of gravity; when the liquid level of the primary alkali liquor in the buffer separation cabin 3 is close to the lower end of the feeding partition plate 31, the primary alkali liquor is conveyed to an alkali liquor recovery tank through an alkali liquor circulating port 33; the primary oil phase overflows into the oil-water separation chamber 4 from the top of the mixing overflow weir 32 for gravity settling separation again, and the oil phase and the water phase overflow into the oil discharge chamber 6 and the water discharge chamber 7 respectively and are then conveyed to the oil storage tank and the sodium bisulfate storage tank through the oil discharge port 62 and the water discharge port 71 respectively.
The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and equivalent transformation of doing above embodiment the utility model discloses technical scheme's protection scope.
Claims (6)
1. A light hydrocarbon oil alkali washing desulfurization and oil-water separation tank for waste mineral oil hydrogenation regeneration is characterized by comprising: the device comprises a feeding mixing pipe (1), an alkaline washing cabin (2), a buffering separation cabin (3), an oil-water separation cabin (4), a shell (5), an oil discharge cabin (6) and a water discharge cabin (7), wherein the cabins are isolated by one or two of weirs and plates;
the feeding mixing pipe (1) is arranged at the bottom of the right side of the shell (5) and consists of an oil inlet pipe (11), an alkali liquor pipe (12) and a static mixer (13), and the static mixer (13) is arranged in a pipeline of the feeding hole; mixing light hydrocarbon oil and alkali liquor for the first time in a static mixer (13) for alkali washing and desulfurization;
the alkali washing cabin (2) is provided with a stirrer (21) and a feeding overflow weir (22); after the oil-water mixture fully reacts under the action of mechanical stirring, the oil-water mixture overflows over a feeding overflow weir (22) and enters a buffer separation cabin (3);
a feeding partition plate (31) is arranged on the right side of the buffer separation cabin (3), a mixing overflow weir (32) is arranged on the left side of the buffer separation cabin, and an alkali liquor circulating port (33) is arranged at the bottom of the cabin body; the alkali washing mixed liquor is primarily separated in the buffer separation cabin (3), the primarily separated oil phase enters the oil-water separation cabin (4) through the mixing overflow weir (32), and the desulfurized alkali liquor is conveyed to the alkali liquor circulation tank through the alkali liquor circulation port (33);
the oil-water separation cabin (4) is positioned in front of the left side of the buffer separation cabin (3), the left side of the oil-water separation cabin (4) is provided with an oil separation plate (42), the right side of the oil-water separation cabin is provided with a mixing partition plate (41), the rear side of the oil separation cabin is provided with an oil overflow weir (61), the bottom of the oil separation cabin is provided with a cleaning liquid outlet (44), and the top of the oil separation cabin is provided with a flame arrester (51) and; the primarily separated oil phase is subjected to oil-water separation again under the action of gravity in the oil-water separation cabin (4), the oil phase overflows the oil overflow weir (61) and flows into the oil drainage cabin (6), and the alkali liquor flows to the water drainage cabin (7) through the lower end of the oil separation plate (42);
the oil discharge cabin (6) is positioned right behind the oil-water separation cabin (4), an oil overflow weir (61) is arranged between the two cabins, and an oil discharge port (62) is arranged at the bottom of the oil discharge cabin (6);
the drainage tank (7) is positioned on the left side of the oil-water separation tank (4), an overflow weir (72) and an oil separation plate (42) are arranged between the two tanks, and a water outlet (71) is arranged at the bottom of the drainage tank (7).
2. The alkaline washing desulfurization and oil-water separation tank for the waste mineral oil hydrogenation regeneration light hydrocarbon oil according to claim 1, characterized in that: the feeding overflow weir (22), the mixing overflow weir (32), the oil overflow weir (61), the upper edge of the overflow weir (72), the lower edges of the oil separation plate (42) and the feeding partition plate (31) are all horizontal straight edges, and the weirs and the plates are all parallel surfaces; the lower part of the mixing partition plate (41) is provided with a horizontal straight edge and a bevel edge which forms an angle of 105 degrees with the horizontal straight edge; the upper edge of the feeding overflow weir (22) is higher than the upper edge of the mixing overflow weir (32), the upper edge of the mixing overflow weir (32) is higher than the upper edge of the oil overflow weir (61), and the upper edge of the oil overflow weir (61) is higher than the upper edge of the overflow weir (72); the lower edge of the oil baffle plate (42) is lower than the horizontal lower edge of the mixing partition plate (41), and the horizontal lower edge of the mixing partition plate (41) is lower than the lower edge of the feeding partition plate (31).
3. The alkaline washing desulfurization and oil-water separation tank for the waste mineral oil hydrogenation regeneration light hydrocarbon oil according to claim 1, characterized in that: the included angle between the oil overflow weir (61) and the horizontal plane is 75 degrees, and the connection mode between the oil overflow weir (61) and the oil separation plate (42) and the material mixing partition plate (41) is seamless welding.
4. The alkaline washing desulfurization and oil-water separation tank for the waste mineral oil hydrogenation regeneration light hydrocarbon oil according to claim 1, characterized in that: and pressure balance holes (43) are formed in the tops of the oil separating plate (42), the mixing partition plate (41) and the feeding partition plate (31).
5. The alkaline washing desulfurization and oil-water separation tank for the waste mineral oil hydrogenation regeneration light hydrocarbon oil according to claim 1, characterized in that: the circular arc edges of the overflow weir (72), the oil separating plate (42), the mixing partition plate (41), the mixing overflow weir (32), the feeding partition plate (31) and the feeding overflow weir (22) are welded with the inside of the shell (5) in a seamless mode.
6. The alkaline washing desulfurization and oil-water separation tank for the waste mineral oil hydrogenation regeneration light hydrocarbon oil according to claim 1, characterized in that: the water level of the alkali liquor in the oil-water separation cabin (4) is higher than the lower edge of the oil separation plate (42) and lower than the horizontal lower edge of the mixing partition plate (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021314025.6U CN212713372U (en) | 2020-07-07 | 2020-07-07 | Light hydrocarbon oil alkali washing desulfurization and oil-water separation tank for waste mineral oil hydrogenation regeneration |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021314025.6U CN212713372U (en) | 2020-07-07 | 2020-07-07 | Light hydrocarbon oil alkali washing desulfurization and oil-water separation tank for waste mineral oil hydrogenation regeneration |
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| CN212713372U true CN212713372U (en) | 2021-03-16 |
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| CN202021314025.6U Active CN212713372U (en) | 2020-07-07 | 2020-07-07 | Light hydrocarbon oil alkali washing desulfurization and oil-water separation tank for waste mineral oil hydrogenation regeneration |
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| CN (1) | CN212713372U (en) |
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