CN109135799B - Quenching oil tower - Google Patents
Quenching oil tower Download PDFInfo
- Publication number
- CN109135799B CN109135799B CN201811282248.6A CN201811282248A CN109135799B CN 109135799 B CN109135799 B CN 109135799B CN 201811282248 A CN201811282248 A CN 201811282248A CN 109135799 B CN109135799 B CN 109135799B
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- Prior art keywords
- oil
- tower
- rectifying section
- quenching
- tray
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- 238000010791 quenching Methods 0.000 title claims abstract description 63
- 230000000171 quenching effect Effects 0.000 title claims abstract description 48
- 239000003921 oil Substances 0.000 claims abstract description 94
- 239000007921 spray Substances 0.000 claims abstract description 16
- 239000010763 heavy fuel oil Substances 0.000 claims abstract description 13
- 239000010771 distillate fuel oil Substances 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims description 14
- 238000000197 pyrolysis Methods 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000005336 cracking Methods 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 9
- 238000007664 blowing Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 239000000446 fuel Substances 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 4
- 238000009833 condensation Methods 0.000 claims description 3
- 230000005494 condensation Effects 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 3
- 238000010992 reflux Methods 0.000 claims 2
- 238000004939 coking Methods 0.000 abstract description 3
- 239000000126 substance Substances 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G7/00—Distillation of hydrocarbon oils
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention provides a quenching oil tower which can effectively separate heavy fuel oil and light fuel oil, and has the advantages of high efficiency, large flow, small pressure drop, high heat transfer coefficient, difficult coking and long operation period. The vertical type quenching tower comprises a vertically arranged barrel, a lower seal head is arranged at the bottom of the barrel, a tower bottom oil outlet pipe is connected to the bottom of the lower seal head, an upper seal head is arranged at the top of the barrel, a gas outlet is arranged at the top of the upper seal head, the barrel comprises an upper rectifying section and a lower rectifying section, a gas feeding port and a two-phase feeding port are arranged on one side of a lower area of the lower rectifying section, a first tray is arranged in a middle cavity of the lower rectifying section, the first tray comprises a plurality of layers, a first spray pipe is arranged in an upper cavity of the lower rectifying section, an inlet of the first spray pipe is communicated with a quenching oil return port, a second tray is arranged in a lower cavity of the upper rectifying section, and the second tray comprises a plurality of layers.
Description
Technical Field
The invention relates to the technical field of heat exchange structures, in particular to a quenching oil tower.
Background
The quenching oil tower has the function of separating heavy fuel oil and light fuel oil components from the effluent of the cracking furnace by an oil washing method, and further cooling cracking gas, and the existing quenching oil tower has poor separation effect.
Disclosure of Invention
Aiming at the problems, the invention provides a quenching oil tower which can effectively separate heavy fuel oil and light fuel oil, and has the advantages of high efficiency, large flow, small pressure drop, high heat transfer coefficient, difficult coking and long operation period.
A quench oil tower, characterized in that: the vertical type quenching tower comprises a vertically arranged barrel, a lower end enclosure is arranged at the bottom of the barrel, a tower bottom oil outlet pipe is connected to the bottom of the lower end enclosure, an upper end enclosure is arranged at the top of the barrel, a gas outlet is arranged at the top of the upper end enclosure, the barrel comprises an upper rectifying section and a lower rectifying section, a gas feeding port and a two-phase feeding port are arranged on one side of a lower area of the lower rectifying section, a first tray is arranged in a middle cavity of the lower rectifying section, the first tray comprises a plurality of layers, a first spray pipe is arranged in an upper cavity of the lower rectifying section, an inlet of the first spray pipe is communicated with a quenching oil return port, a second tray is arranged in a lower cavity of the upper rectifying section, the second tray comprises a plurality of layers, a second spray pipe is arranged in an upper cavity of the upper rectifying section, and an inlet of the second spray pipe is communicated with an oil return inlet.
It is further characterized by:
the lower seal head is in a semi-ellipsoidal or hemispherical structure which is closed downwards, and the upper seal head is in a semi-ellipsoidal or hemispherical structure which is closed upwards, so that the flowing resistance of a substance is small, and the smoothness of the flowing of the substance is ensured;
the bottom end socket is characterized in that the whole body of the lower end socket is supported on a skirt after being connected with a cylinder body, the bottom of the skirt is supported on the ground, the bottom oil outlet pipe comprises a vertical section and a horizontal section, and the exposed end of the horizontal section penetrates through the side wall of the skirt;
the cylinder diameter of the cylinder corresponding to the upper rectifying section is smaller than that of the cylinder corresponding to the lower rectifying section, and the cylinder corresponding to the upper cavity of the lower rectifying section is an upward closing cone, so that the flow direction of the substance is smooth and reliable;
the top side wall of the cylinder is also provided with a tower top hanging column, so that the whole device can conveniently move in a hanging mode;
an evacuation port is also arranged on the upper sealing head;
the upper part of the gas feed port is also provided with a small-diameter gas feed port;
the other side wall positions of the cylinder body, which correspond to the quenching oil return port and the quenching oil return inlet, are respectively provided with a manhole, so that observation and overhaul are facilitated;
the steam blowing opening is arranged at the position of the upper side wall of the cylinder body corresponding to the lower sealing head, and is arranged towards the inner cavity of the cylinder body, so that the effective use of the cylinder body when cleaning is needed is ensured.
After the invention is adopted, the heavy fuel oil and the light fuel oil are separated from each other in the rectifying section of the quenching oil tower, the liquid flowing in from the oil return inlet at the top of the quenching oil tower is the mixed oil separated and obtained by the oil-water separator at the bottom of the quenching water tower at the front-stage station, and the temperature at the top of the quenching oil tower is controlled by the amount of the quenching oil flowing into the quenching oil return port so as to prevent steam condensation at the upper part of the quenching oil tower; the quenching oil tower is used for separating heavy fuel oil and light fuel oil components from the pyrolysis furnace effluent by an oil washing method and further cooling pyrolysis gas; introducing a cracking mixture from an oil cooler from a gas feed port and a two-phase feed port at the bottom of a tower, allowing quench oil to enter a cylinder through a quench oil return port, allowing pyrolysis gas components to rise, introducing mixed oil which flows back into an oil return hole at the top of the tower, respectively carrying out mass transfer and heat transfer on the rising gas, the mixed oil and the quench oil on a first tray and a second tray, condensing heavy components in the gas, vaporizing light components in the liquid, establishing vapor-liquid balance, separating heavy fuel oil from the bottom of the cylinder, discharging the heavy fuel oil through an oil outlet pipe at the bottom of the cylinder, separating water vapor, pyrolysis gasoline and pyrolysis light fuel components thereof from the top of the cylinder, and discharging the water vapor, pyrolysis gasoline and pyrolysis light fuel components thereof through a gas outlet at the top of the cylinder; the method can effectively separate heavy fuel oil and light fuel oil, and has the advantages of high efficiency, large flow, small pressure drop, high heat transfer coefficient, difficult coking and long operation period.
Drawings
FIG. 1 is a schematic diagram of a front view structure of the present invention;
the names corresponding to the serial numbers in the figures are as follows:
barrel 1, low head 2, bottom oil outlet pipe 3, vertical section 31, horizontal section 32, upper head 4, gas outlet 5, upper rectifying section 101, lower rectifying section 102, gas feed port 6, two-phase feed port 7, first tray 8, first spray pipe 9, quench oil return port 10, second tray 11, second spray pipe 12, oil return inlet 13, skirt 14, overhead column 15, evacuation port 16, small-diameter gas feed port 17, manhole 18, steam purge port 19.
Detailed Description
A quench oil tower, see fig. 1: which comprises a cylinder body 1 arranged vertically, a lower seal head 2 is arranged at the bottom of the cylinder body 1, a bottom oil outlet pipe 3 is connected with the bottom of the lower seal head 2, an upper seal head 4 is arranged at the top of the cylinder body 1, a gas outlet 5 is arranged at the top of the upper seal head 4, the cylinder body 1 comprises an upper rectifying section 101 and a lower rectifying section 102, a gas feed port 6 and a two-phase feed port 7 are arranged at one side of the lower region of the lower rectifying section 102, a first tray 8 is arranged in the middle cavity of the lower rectifying section 102, the first tower tray 8 comprises eight layers of tower trays, a first spray pipe 9 is arranged in the upper cavity of the lower rectifying section 102, a quenching oil return port 10 is communicated with the inlet of the first spray pipe 9, a second tower tray 11 is arranged in the lower cavity of the upper rectifying section 101, the second tower tray 11 comprises ten layers of tower trays, a second spray pipe 12 is arranged in the upper cavity of the upper rectifying section 101, and an oil return inlet 13 is communicated with the inlet of the second spray pipe 12.
The lower seal head 2 is in a semi-ellipsoidal or hemispherical structure which is closed downwards, and the upper seal head 4 is in a semi-ellipsoidal or hemispherical structure which is closed upwards, so that the flowing resistance of a substance is small, and the smoothness of the flowing of the substance is ensured;
the whole body of the lower seal head 2 and the cylinder body 1 after being connected is supported on a skirt 14, the bottom of the skirt 14 is supported on the ground, the tower bottom oil outlet pipe 3 comprises a vertical section 31 and a horizontal section 32, and the exposed end of the horizontal section 32 penetrates through the side wall of the skirt 14;
the cylinder diameter of the cylinder body 1 corresponding to the upper rectifying section 101 is smaller than the cylinder diameter of the cylinder body 1 corresponding to the lower rectifying section 102, and the cylinder body corresponding to the upper cavity of the lower rectifying section 102 is an upward closing-up cone cylinder, so that the flow direction of a substance is smooth and reliable;
the top side wall of the cylinder body 1 is also provided with a tower top hanging column 15, so that the whole device can conveniently move in a hanging mode;
an emptying port 16 is also arranged on the upper sealing head 4;
the upper part of the gas feed port 6 is also provided with a small-diameter gas feed port 17;
the other side wall of the cylinder body 1, which corresponds to the quenching oil return port 10 and the oil return inlet 13, is respectively provided with a manhole 18, so that observation and overhaul are facilitated;
the cylinder 1 is arranged with a steam blowing opening 19 corresponding to the upper side wall of the lower seal head 2, the steam blowing opening 19 is arranged towards the inner cavity of the cylinder, and the effective use when cleaning is needed is ensured.
The liquid flowing into the oil return inlet at the top of the quenching oil tower is mixed oil separated by an oil-water separator at the bottom of the quenching water tower at the front-stage station, and the temperature at the top of the quenching oil tower is controlled by the amount of the quenching oil flowing into the quenching oil return port so as to prevent steam condensation at the upper part of the quenching oil tower; the quenching oil tower is used for separating heavy fuel oil and light fuel oil components from the pyrolysis furnace effluent by an oil washing method and further cooling pyrolysis gas; the cracking mixture from the oil cooler is introduced from a gas feed inlet and a two-phase feed inlet at the bottom of the tower, the quenching oil enters the cylinder through a quenching oil return port, the cracking gas component rises, the mixed oil flowing back is introduced into an oil return hole at the top of the tower, the rising gas respectively carries out mass transfer and heat transfer with the quenching oil and the mixed oil on a first tray and a second tray, heavy components in the gas are condensed, light components in the liquid are vaporized, vapor-liquid balance is established, heavy fuel oil is separated from the bottom of the cylinder and is discharged through an oil outlet pipe at the bottom of the tower, and the water vapor, the cracking gasoline and the cracking light fuel component thereof are separated from the top of the tower and are discharged through a gas outlet at the top of the tower.
The foregoing describes the embodiments of the present invention in detail, but the description is only a preferred embodiment of the invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications made in accordance with the scope of the present invention shall fall within the scope of the present patent.
Claims (9)
1. A method of operating a quench oil tower, comprising: the quenching oil tower comprises a vertically arranged barrel, a lower end enclosure is arranged at the bottom of the barrel, a tower bottom oil outlet pipe is connected to the bottom of the lower end enclosure, an upper end enclosure is arranged at the top of the barrel, a gas outlet is arranged at the top of the upper end enclosure, the barrel comprises an upper rectifying section and a lower rectifying section, a gas feed inlet and a two-phase feed inlet are arranged on one side of a lower area of the lower rectifying section, a first tray is arranged in a middle cavity of the lower rectifying section, the first tray comprises a plurality of layers, a first spray pipe is arranged in an upper cavity of the lower rectifying section, an inlet of the first spray pipe is communicated with a quenching oil return port, a second tray is arranged in a lower cavity of the upper rectifying section, the second tray comprises a plurality of layers, a second spray pipe is arranged in an upper cavity of the upper rectifying section, and an inlet of the second spray pipe is communicated with an oil return inlet;
the rectifying section of the quenching oil tower is used for separating heavy fuel oil and light fuel oil, the liquid flowing into the oil return inlet at the top of the quenching oil tower is mixed oil separated by the oil-water separator at the bottom of the quenching water tower at the front-stage station, and the temperature of the top of the quenching oil tower is controlled by the amount of the quenching oil flowing into the quenching oil return port so as to prevent steam condensation at the upper part of the quenching oil tower; the quenching oil tower is used for separating heavy fuel oil and light fuel oil components from the pyrolysis furnace effluent by an oil washing method and further cooling pyrolysis gas; the cracking mixture from the oil cooler is introduced from a gas feed inlet and a two-phase feed inlet at the bottom of the tower, the quenching oil enters the cylinder through a quenching oil return port, the cracking gas component rises, the reflux mixed oil is introduced into a reflux inlet at the top of the tower, the rising gas respectively carries out mass transfer and heat transfer with the quenching oil and the mixed oil on a first tray and a second tray, heavy components in the gas are condensed, light components in the liquid are vaporized, vapor-liquid balance is established, heavy fuel oil is separated out from the bottom of the cylinder and is discharged through an oil outlet pipe at the bottom of the tower, and water vapor, pyrolysis gasoline and the pyrolysis light fuel component thereof are separated out from the top of the tower and are discharged through a gas outlet at the top of the tower.
2. A method of operating a quench oil tower as claimed in claim 1, wherein: the lower end enclosure is specifically a semi-ellipsoidal or hemispherical structure which closes downwards, and the upper end enclosure is specifically a semi-ellipsoidal or hemispherical structure which closes upwards.
3. A method of operating a quench oil tower as claimed in claim 1 or claim 2, wherein: the bottom oil outlet pipe comprises a vertical section and a horizontal section, and the exposed end of the horizontal section penetrates through the side wall of the skirt.
4. A method of operating a quench oil tower as claimed in claim 1, wherein: the cylinder diameter of the cylinder corresponding to the upper rectifying section is smaller than that of the cylinder corresponding to the lower rectifying section, and the cylinder corresponding to the upper cavity of the lower rectifying section is an upward closing cone.
5. A method of operating a quench oil tower as claimed in claim 1, wherein: the top side wall of the cylinder body is also provided with a tower top hanging column.
6. A method of operating a quench oil tower as claimed in claim 1, wherein: and an evacuation port is also arranged on the upper sealing head.
7. A method of operating a quench oil tower as claimed in claim 1, wherein: the upper part of the gas feeding hole is also provided with a small-diameter gas feeding hole.
8. A method of operating a quench oil tower as claimed in claim 3, wherein: and manholes are respectively arranged on the other side wall of the cylinder body, which corresponds to the quenching oil return port and the quenching oil return inlet.
9. A method of operating a quench oil tower as claimed in claim 1, wherein: the steam blowing port is arranged at the position of the upper side wall of the cylinder body corresponding to the lower sealing head, and the steam blowing port is arranged towards the inner cavity of the cylinder body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811282248.6A CN109135799B (en) | 2018-10-30 | 2018-10-30 | Quenching oil tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811282248.6A CN109135799B (en) | 2018-10-30 | 2018-10-30 | Quenching oil tower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109135799A CN109135799A (en) | 2019-01-04 |
| CN109135799B true CN109135799B (en) | 2023-12-29 |
Family
ID=64806662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811282248.6A Active CN109135799B (en) | 2018-10-30 | 2018-10-30 | Quenching oil tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109135799B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202777875U (en) * | 2012-08-06 | 2013-03-13 | 中冶焦耐工程技术有限公司 | Novel purified ammonia rectifying tower |
| CN108251152A (en) * | 2018-03-20 | 2018-07-06 | 刘彦昌 | A kind of vacuum tower of waste lubricating oil pretreatment |
| CN209161963U (en) * | 2018-10-30 | 2019-07-26 | 苏州圣汇装备有限公司 | A kind of quenching oil column |
-
2018
- 2018-10-30 CN CN201811282248.6A patent/CN109135799B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202777875U (en) * | 2012-08-06 | 2013-03-13 | 中冶焦耐工程技术有限公司 | Novel purified ammonia rectifying tower |
| CN108251152A (en) * | 2018-03-20 | 2018-07-06 | 刘彦昌 | A kind of vacuum tower of waste lubricating oil pretreatment |
| CN209161963U (en) * | 2018-10-30 | 2019-07-26 | 苏州圣汇装备有限公司 | A kind of quenching oil column |
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| Publication number | Publication date |
|---|---|
| CN109135799A (en) | 2019-01-04 |
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