CN104419442A - Method and device for separating light gasoline, heavy gasoline and light diesel oil - Google Patents
Method and device for separating light gasoline, heavy gasoline and light diesel oil Download PDFInfo
- Publication number
- CN104419442A CN104419442A CN201310382789.7A CN201310382789A CN104419442A CN 104419442 A CN104419442 A CN 104419442A CN 201310382789 A CN201310382789 A CN 201310382789A CN 104419442 A CN104419442 A CN 104419442A
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- oil
- gasoline
- around circuit
- pump around
- heavy petrol
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Classifications
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- 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
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- 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
- C10G7/04—Dewatering
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- 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
- C10G2400/00—Products obtained by processes covered by groups C10G9/00 - C10G69/14
- C10G2400/02—Gasoline
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- 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
- C10G2400/00—Products obtained by processes covered by groups C10G9/00 - C10G69/14
- C10G2400/04—Diesel oil
-
- 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
- C10G2400/00—Products obtained by processes covered by groups C10G9/00 - C10G69/14
- C10G2400/06—Gasoil
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- 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 discloses a method for separating light gasoline, heavy gasoline and light diesel oil, which belongs to the technical field of petrochemical industries and can be used for solving the problem of separation among light gasoline, heavy gasoline and light diesel oil in a petrochemical process and the problem of salt coagulation in a separation process. The method comprises the following steps: performing oil product separation in a fractionating tower, and performing process dehydration. The method is characterized in that three separation sections are arranged at the upper part of the fractionating tower, an upper section is used for separating light gasoline and heavy gasoline, a lower section is used for separating heavy gasoline and light diesel oil, and a middle section is used for performing circulating reflux and heat extraction as well as dehydration. By adopting the method disclosed by the invention, the separation among light gasoline, heavy gasoline and light diesel oil can be achieved; and moreover, a separation process is low in energy consumption, and the problem that the upper part of the fractionating tower has a salt coagulation phenomenon can be solved. The invention also provides a separation device which can be used for performing the method and comprises an oil product fractionating tower and dehydration facilities. The method and device disclosed by the invention can be applied to petroleum processing devices with requirements for separating light gasoline, heavy gasoline and light diesel oil.
Description
Technical field
The invention belongs to technical field of petrochemical industry, particularly a kind of petroleum naphtha, heavy petrol, solar oil separation method and device.
Background technology
Petroleum naphtha, heavy petrol, solar oil separation is often used in petroleum refining process.Full distillation gasoline boiling range is initial boiling point ~ 205 DEG C, and petroleum naphtha boiling range is initial boiling point ~ 100 DEG C, and heavy petrol boiling range is 100 DEG C ~ 205 DEG C.Petroleum naphtha olefin(e) centent is high, octane value is high, sulphur content is low, is applicable to the raw material making ether-based device.Heavy petrol olefin(e) centent is relatively low, octane value is relatively low, sulphur content is high, is applicable to making gasoline hydrodesulfurizationmethod device raw material.Therefore petroleum chemical enterprise needs light, heavy petrol to be separated to process respectively.Petroleum chemical enterprise adjusts the product mix, and increases Etherification of Light FCC Gasoline, heavy petrol hydrogenation unit, usually adopts original production device motionless at present, sets up separately weight gasoline separation tower.The method is heated by full distillation gasoline, then enters in weight gasoline separation tower, arranges reboiler and provide heat to rectifying at the bottom of tower, and tower top petroleum naphtha oil gas obtains petroleum naphtha product after cooling, and part returns separation column as backflow.The method needs to input amount of heat at the bottom of tower for maintaining distillation operation, and therefore the method energy consumption is high.Catalytic cracking unit is also fractionated the puzzlement of tower salt crust often when processing heavy oil.
Summary of the invention
The object of this invention is to provide a kind of petroleum naphtha, heavy petrol, solar oil separation method, petroleum naphtha, heavy petrol, solar oil separation can be realized, significantly reduce weight gasoline sepn process energy consumption, and solve sepn process salt crust problem.
The present invention solves the method that its technical problem adopts: the method comprises separation column oil product and is separated and process dehydration, it is characterized in that: 3 segregation sections are set on separation column top, epimere is separated light, heavy petrol, and hypomere separating heavy gasoline, solar oil, stage casing is pump around circuit heat-obtaining and dehydration.
Further, separative element is column plate or filler or its combination.
Further, pump around circuit heat-obtaining and dehydration comprise pressure-increasing unit, dehydration and heat exchange.
Further, or arrange in tower in the middle of the epimere or tower dewaters facility outward.
Further, arrange or heavy petrol, solar oil stripping tower are not set.
Realize a device for described inventive method, comprise separation column housing, 3 sections of filler, oil header, sparger and pump around circuit oil dewatering systems; Be provided with top backflow distributor above epimere filler, below is provided with heavy petrol and extracts oil header or band extraction bucket tower plate out; Be provided with pump around circuit oil sparger above the filler of stage casing, below is provided with pump around circuit oil and extracts oil header and redistributor out; Be provided with solar oil below hypomere filler and extract oil header or band extraction bucket tower plate out; Pump around circuit oil dewatering system comprises transferpump, water knockout and interchanger; Or oil header, sparger and intersegmental oily dewatering system are set in the middle of epimere filler, intersegmental oily dewatering system comprises transferpump, water knockout and interchanger.
Another kind realizes the device of described inventive method, comprises separation column housing, 3 sections of column plates and pump around circuit oil dewatering system; Epimere column plate top layer is provided with top backflow import, and bottom is provided with heavy petrol and entirely extracts bucket out; Stage casing column plate top layer is provided with pump around circuit oil inlet, and bottom is provided with pump around circuit oil and extracts bucket or oil header out; Hypomere column plate bottom is provided with solar oil and extracts bucket out; Pump around circuit oil dewatering system comprises transferpump, water knockout and interchanger; Or entirely take out column plate and intersegmental oily dewatering system middle setting of epimere column plate, intersegmental oily dewatering system comprises transferpump, water knockout and interchanger.
Innovative point of the present invention and positively effect:
Innovative point of the present invention is: arrange 3 segregation sections on separation column top, and epimere is separated light, heavy petrol, and hypomere separating heavy gasoline, solar oil, stage casing is pump around circuit heat-obtaining and dehydration.
Positively effect of the present invention is: sepn process makes full use of the heat of high temperature unstripped gas, does not need additionally to input amount of heat, and weight gasoline sepn process energy consumption is significantly reduced; Be provided with dehydration facility in sepn process, avoid salt coagulation of fractionating tower problem.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of petroleum naphtha, heavy petrol, solar oil separation method and device.
1-epimere filler, 2-heavy petrol oil header, 3-stage casing filler, 3A-hypomere filler, 4-pump around circuit oil oil header, 4A-solar oil oil header, 5-separation column, 6-high temperature unstripped gas, 7-refluxes, 8-backflow distributor, 9-pump around circuit oil, 10-pump around circuit oil water knockout, 11-brackish water, 12-pump around circuit oil pump, 13-pump around circuit oil sparger, 14-interchanger, 15-heavy petrol stripping column plate, 16-heavy petrol stripping tower, 17-stripped vapor, 18-heavy petrol pump, 19-heavy petrol water cooler, 20-heavy petrol, 21-solar oil, 22-fractionation tower top oil gas.
Fig. 2 is the schematic diagram of another kind of petroleum naphtha, heavy petrol, solar oil separation method and device.
1-epimere filler (on), 1A-epimere filler (under), 2-heavy petrol oil header, the intersegmental oil header of 2A-, 3-stage casing filler, 3A-hypomere filler, 4-pump around circuit oil oil header, 4A-solar oil oil header, 5-separation column, 6-high temperature unstripped gas, 7-refluxes, 8-backflow distributor, the intersegmental gasoline sparger of 8A-, 9-pump around circuit oil, 10-pump around circuit oil water knockout, 11-brackish water, 12-pump around circuit oil pump, 13-pump around circuit oil sparger, 14-interchanger, 15-heavy petrol stripping column plate, 16-heavy petrol stripping tower, 17-stripped vapor, 18-heavy petrol pump, 19-heavy petrol water cooler, 20-heavy petrol, 21-solar oil, 22-fractionation tower top oil gas, the intersegmental gasoline of 23-, the intersegmental gasoline water knockout of 24-, 25-brackish water, the intersegmental gasoline oil pump of 26-, the intersegmental gasoline interchanger of 27-.
Fig. 3 is the schematic diagram of another kind of petroleum naphtha, heavy petrol, solar oil separation method and device.
1-epimere column plate (on), 1A-epimere column plate (under), the intersegmental extraction column plate of 2A-, column plate extracted out by 2-heavy petrol, 3-stage casing column plate, 3A-hypomere column plate, 4-pump around circuit oil oil header, column plate extracted out by 4A-solar oil, 5-separation column, 6-high temperature unstripped gas, 7-refluxes, 9-pump around circuit oil, 10-pump around circuit oil water knockout, 11-brackish water, 12-pump around circuit oil pump, 14-interchanger, 15-heavy petrol stripping column plate, 16-heavy petrol stripping tower, 17-stripped vapor, 18-heavy petrol pump, 19-heavy petrol water cooler, 20-heavy petrol, 21-solar oil, 22-fractionation tower top oil gas, the intersegmental gasoline of 23-, the intersegmental gasoline water knockout of 24-, 25-brackish water, the intersegmental gasoline oil pump of 26-, the intersegmental gasoline interchanger of 27-.
Embodiment
See Fig. 1, Fig. 2, separative element is 3 sections of filler schemes, is wherein also provided with oil header, sparger and respective external dehydration facility between Fig. 2 epimere filler.Separation column 5 top is provided with epimere filler 1, stage casing filler 3 and hypomere filler 3A3 section filler.Be provided with backflow distributor 8 above epimere filler 1, below is provided with heavy petrol oil header 2; Be provided with pump around circuit oil sparger 13 above stage casing filler 3, below is provided with pump around circuit oil oil header 4; Solar oil oil header 4A is provided with below hypomere filler 3A.Pump around circuit oil water knockout 10 is connected with pump around circuit oil oil header 4, pump around circuit oil pump 12, and interchanger 14 is connected with pump around circuit oil sparger 13.Heavy petrol stripping tower 16 inside is provided with heavy petrol stripping column plate 15, and heavy petrol stripping tower 16 top is connected with heavy petrol oil header 2, and bottom is connected with heavy petrol pump 18.Fig. 2 is also provided with intersegmental dehydration facility, epimere filler (on) being provided with backflow distributor 8 above 1, below is provided with intersegmental oil header 2A; Epimere filler (under) top be provided with intersegmental gasoline sparger 8A, below is provided with heavy petrol oil header 2; Intersegmental gasoline water knockout 24 is connected with intersegmental oil header 2A, intersegmental gasoline oil pump 26, and intersegmental gasoline interchanger 27 is connected with intersegmental gasoline sparger 8A.
See Fig. 3, separative element is 3 sections of column plate schemes.Separation column 5 top be provided with epimere column plate (on) 1 and epimere column plate (under) 1A, stage casing column plate 3 and hypomere column plate 3A3 section column plate.Epimere column plate (on) being provided with backflow 7 import above 1, below is provided with intersegmental extraction column plate 2A; Epimere column plate (under) top be provided with intersegmental gasoline inlet, below be provided with heavy petrol extract out column plate 2; Be provided with pump around circuit oil inlet above stage casing column plate 3, below is provided with pump around circuit oil oil header 4; Be provided with solar oil below hypomere column plate 3A and extract column plate 4A out.Pump around circuit oil water knockout 10 extracts column plate 4 out with pump around circuit oil, pump around circuit oil pump 12 is connected, and interchanger 14 one end is connected with pump around circuit oil pump 12, and the other end is connected with separation column 5.Heavy petrol stripping tower 16 inside is provided with heavy petrol stripping column plate 15, and heavy petrol stripping tower 16 top and heavy petrol are extracted column plate 2 out and is connected, and bottom is connected with heavy petrol pump 18.Intersegmental gasoline water knockout 24 is connected with intersegmental extraction column plate 2A, intersegmental gasoline oil pump 26, and intersegmental gasoline interchanger 27 is connected with separation column 5.
See Fig. 1, high temperature unstripped gas 6 enters from separation column 5 bottom, in tower on flow into top separated region.Carry out heavy petrol through hypomere filler 3A to be separated with solar oil, the solar oil 21 separated is drawn from its outlet port and is removed its stripping tower; Oil gas continues upwards to flow, take out part oil gas heat through stage casing filler 3 and reduce oil gas temperature, pump around circuit oil 9 leads to pump around circuit oil water knockout 10 from pump around circuit oil oil header 4, deviate from brackish water 11, pump around circuit oil after dehydration enters in pump around circuit oil pump 12, and supercharging Posterior circle withdrawing oil returns separation column 5 through interchanger 14, pump around circuit oil sparger 13; Oil gas continues upwards to flow into epimere filler 1, carry out light, heavy petrol separation, the heavy petrol separated is drawn from heavy petrol oil header 2 and is entered heavy petrol stripping tower 16,4 ~ 6 blocks of heavy petrol stripping column plates 15 are provided with in it, stripped vapor 17 is fed in its underpart, discharge at its top and return separation column 5, the heavy petrol after stripping obtains heavy petrol product 20 after heavy petrol pump 18, heavy petrol water cooler 19.Push up outflow containing petroleum naphtha oil gas 22 from separation column 5, backflow 7 enters from separation column 5 top through backflow distributor 8, controls tower top temperature.
See Fig. 2, Fig. 3, high temperature unstripped gas 6 enters from separation column 5 bottom, in tower on flow into top separated region.Carry out heavy petrol through hypomere filler 3A (or hypomere column plate 3A) to be separated with solar oil, the solar oil 21 separated is drawn from its outlet port and is removed its stripping tower; Oil gas continues upwards to flow, take out part oil gas heat through stage casing filler 3 (or stage casing column plate 3) and reduce oil gas temperature, pump around circuit oil 9 leads to pump around circuit oil water knockout 10 from pump around circuit oil oil header 4, deviate from brackish water 11, pump around circuit oil after dehydration enters in pump around circuit oil pump 12, and supercharging Posterior circle withdrawing oil returns separation column 5 through interchanger 14, pump around circuit oil sparger 13 (or import).Oil gas continues upwards to flow into epimere filler (on) 1 and epimere filler (under) 1A (or epimere column plate (on) 1 and epimere column plate (under) 1A), carries out light, heavy petrol and is separated; Intersegmental gasoline 23 leads to intersegmental gasoline water knockout 24 from intersegmental oil header 2A (or intersegmental extraction column plate 2A), deviate from brackish water 25, between the gasoline approach section after dehydration in gasoline oil pump 26, after supercharging, gasoline returns separation column 5 through intersegmental gasoline interchanger 27, intersegmental gasoline sparger 8A (or import); The heavy petrol separated is drawn from heavy petrol oil header 2 (or column plate 2 extracted out by heavy petrol) and is entered heavy petrol stripping tower 16,4 ~ 6 blocks of heavy petrol stripping column plates 15 are provided with in it, stripped vapor 17 is fed in its underpart, discharge at its top and return separation column 5, the heavy petrol after stripping obtains heavy petrol product 20 after heavy petrol pump 18, heavy petrol water cooler 19.Push up outflow containing petroleum naphtha oil gas 22 from separation column 5, backflow 7 enters from separation column 5 top through backflow distributor 8 (or import), controls tower top temperature.
Claims (7)
1. a petroleum naphtha, heavy petrol, solar oil separation method, comprise separation column oil product to be separated and process dehydration, it is characterized in that: arrange 3 segregation sections on separation column top, epimere is separated light, heavy petrol, hypomere separating heavy gasoline, solar oil, stage casing is pump around circuit heat-obtaining and dehydration.
2. method according to claim 1, is characterized in that: separative element is column plate or filler or its combination.
3. method according to claim 1, is characterized in that: pump around circuit heat-obtaining and dehydration comprise pressure-increasing unit, dehydration and heat exchange.
4. method according to claim 1, is characterized in that: or arrange in tower in the middle of the epimere or tower dewaters facility outward.
5. method according to claim 1, is characterized in that: arrange or do not arrange heavy petrol, solar oil stripping tower.
6. realize a device for inventive method described in claim 1, comprise separation column housing, 3 sections of filler, oil header, sparger and pump around circuit oil dewatering systems; Be provided with top backflow distributor above epimere filler, below is provided with heavy petrol and extracts oil header or band extraction bucket tower plate out; Be provided with pump around circuit oil sparger above the filler of stage casing, below is provided with pump around circuit oil and extracts oil header and redistributor out; Be provided with solar oil below hypomere filler and extract oil header or band extraction bucket tower plate out; Pump around circuit oil dewatering system comprises transferpump, water knockout and interchanger; Or oil header, sparger and intersegmental oily dewatering system are set in the middle of epimere filler, intersegmental oily dewatering system comprises transferpump, water knockout and interchanger.
7. another kind realizes the device of inventive method described in claim 1, comprises separation column housing, 3 sections of column plates and pump around circuit oil dewatering system; Epimere column plate top layer is provided with top backflow import, and bottom is provided with heavy petrol and entirely extracts bucket out; Stage casing column plate top layer is provided with pump around circuit oil inlet, and bottom is provided with pump around circuit oil and extracts bucket or oil header out; Hypomere column plate bottom is provided with solar oil and extracts bucket out; Pump around circuit oil dewatering system comprises transferpump, water knockout and interchanger; Or entirely take out column plate and intersegmental oily dewatering system middle setting of epimere column plate, intersegmental oily dewatering system comprises transferpump, water knockout and interchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310382789.7A CN104419442A (en) | 2013-08-29 | 2013-08-29 | Method and device for separating light gasoline, heavy gasoline and light diesel oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310382789.7A CN104419442A (en) | 2013-08-29 | 2013-08-29 | Method and device for separating light gasoline, heavy gasoline and light diesel oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104419442A true CN104419442A (en) | 2015-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310382789.7A Pending CN104419442A (en) | 2013-08-29 | 2013-08-29 | Method and device for separating light gasoline, heavy gasoline and light diesel oil |
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| CN (1) | CN104419442A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106433771A (en) * | 2016-10-26 | 2017-02-22 | 华南理工大学 | Low-energy-consumption catalytic cracking and catalytic gasoline selective hydrogenation combined process |
-
2013
- 2013-08-29 CN CN201310382789.7A patent/CN104419442A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106433771A (en) * | 2016-10-26 | 2017-02-22 | 华南理工大学 | Low-energy-consumption catalytic cracking and catalytic gasoline selective hydrogenation combined process |
| CN106433771B (en) * | 2016-10-26 | 2018-04-13 | 华南理工大学 | A kind of catalytic cracking of low energy consumption and catalytic gasoline selective hydrogenation process integration |
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Application publication date: 20150318 |
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| WD01 | Invention patent application deemed withdrawn after publication |