CN205420292U - Atmospheric and vacuum unit triple tops waste gas recovery recycles device - Google Patents
Atmospheric and vacuum unit triple tops waste gas recovery recycles device Download PDFInfo
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- CN205420292U CN205420292U CN201620238967.8U CN201620238967U CN205420292U CN 205420292 U CN205420292 U CN 205420292U CN 201620238967 U CN201620238967 U CN 201620238967U CN 205420292 U CN205420292 U CN 205420292U
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Abstract
The utility model discloses an atmospheric and vacuum unit triple tops waste gas recovery recycles device, including primary distillation tower, atmospheric tower and vacuum tower, there is the atmospheric pressure kiln through pipeline connection at the bottom of the tower of primary distillation tower, the exit end of atmospheric pressure kiln passes through the pipeline to be connected with the atmospheric tower, the atmospheric tower passes through the pipeline and is connected with the vacuum tower through the decompression stove, the top of the tower of primary distillation tower, atmospheric tower all has gas to divide the fluid reservoir through pipeline connection, and the top of the tower of vacuum tower divides the fluid reservoir to be connected through subtracting a branch fluid reservoir with gas, and gas divides the exit end of fluid reservoir to pass through the compressor and is connected with catalysis fractionation top of the tower return tank, and the exit linkage that the top of the tower return tank is distillated fractionally in catalysis has catalytic unit to absorb the stable system connection. The utility model discloses it is rational in infrastructure, can carry out effective recycling to hydro carbons ingredient more than the C3 in the waste gas, reduced production and processing loss and device energy consumption, technology design is simple, convenient operation and the high advantage of recovery efficiency, possesses good popularization and application and worth.
Description
Technical field
This utility model relates to the waste gas recovery reutilization technology field of atmospheric and vacuum distillation unit, is specifically related to a kind of atmospheric and vacuum distillation unit three and pushes up exhaust gas recycle apparatus.
Background technology
At present, the waste gas that in atmospheric and vacuum distillation unit field, three column overhead such as primary distillation tower, atmospheric tower, vacuum tower produce fully is not recycled.Prior art is that atmospheric and vacuum distillation unit primary distillation tower, atmospheric tower tower top fixed gas are delivered to atmospheric pressure kiln and done fuel after merging, primary distillation tower and atmospheric tower tower top fixed gas contain the liquefied gas component of high added value, as atmospheric pressure kiln fuel, the liquefied gas component in fixed gas is not recycled utilization.In fixed gas, sulfur content is high simultaneously, directly as atmospheric pressure kiln fuel, can cause normal, vacuum furnace air preheater dew point corrosion.Being sampled analyzing according to three top tail gas, after three top tail gas removing air in each constituent content, carbon more than three component is all about 75%.If it not being carried out recovery can cause the waste of liquid hydrocarbon resource, also burden can be brought to environment protection treating.Liquefied gas component in the waste gas the most how three column overhead such as primary distillation tower, atmospheric tower, vacuum tower produce recycles effectively, becomes important research direction.
Summary of the invention
The purpose of this utility model is aiming at the defect that prior art exists, it is provided that a kind of rational in infrastructure, easy to operate, can reduce production and processing loss and plant energy consumption, and the atmospheric and vacuum distillation unit three that technological design is simple, organic efficiency is high pushes up exhaust gas recycle apparatus.
Its technical scheme is: atmospheric and vacuum distillation unit three pushes up exhaust gas recycle apparatus, including primary distillation tower, atmospheric tower and vacuum tower, connected by pipeline at the bottom of the tower of described primary distillation tower and have atmospheric pressure kiln, the port of export of described atmospheric pressure kiln is connected with atmospheric tower by pipeline, and described atmospheric tower is connected with vacuum tower through vacuum furnace by pipeline；
Described primary distillation tower, the tower top of atmospheric tower all have gas separatory tank by pipeline connection, the tower top of described vacuum tower is connected with gas separatory tank by subtracting top separatory tank, the port of export of described gas separatory tank is connected with catalysed fractionation return tank of top of the tower by compressor, and the outlet of described catalysed fractionation return tank of top of the tower connects has catalytic unit absorbing-stabilizing system to connect.
The tower top of described primary distillation tower and atmospheric tower enters gas pipe network by pipeline；The tower top of described vacuum tower enters gas pipe network by decreasing push, increasing pressure device；Described gas pipe network is connected with the fuel gas entrance of atmospheric pressure kiln and vacuum furnace.
Described primary distillation tower, atmospheric tower overhead gas enter gas separatory tank through same pipeline, and vacuum tower overhead gas individually enters and subtracts top separatory tank.
Described compressor is liquid rotary compressor.
This utility model is compared with prior art, have the advantage that rational in infrastructure, more than C3 hydrocarbon component in waste gas can be carried out efficient recovery, reduce production and processing loss and plant energy consumption, the advantage that technological design is simple and convenient to operate and organic efficiency is high, possesses good application value.
Accompanying drawing explanation
It is presented herein below and in conjunction with the accompanying drawings and embodiments this utility model is further illustrated.
Fig. 1 is structural representation of the present utility model；
In figure: 1. primary distillation tower；2. atmospheric tower；3. vacuum tower；4. atmospheric pressure kiln；5. vacuum furnace；6. gas separatory tank；7. compressor；8. catalytic unit absorbing-stabilizing system；9. gas pipe network；10. catalysed fractionation return tank of top of the tower；11. catalytic fractionators；12. subtract top separatory tank；13. decreasing push, increasing pressure devices.
Detailed description of the invention
With reference to Fig. 1, atmospheric and vacuum distillation unit three pushes up exhaust gas recycle apparatus, including primary distillation tower 1, atmospheric tower 2 and vacuum tower 3.Connected by pipeline at the bottom of the tower of primary distillation tower 1 and have atmospheric pressure kiln 4, the port of export of atmospheric pressure kiln 4 is connected with atmospheric tower 2 by pipeline, raw oil after desalting and dewatering heat exchange enters primary distillation tower 1, the tower top of primary distillation tower 1 has on-condensible gas (waste gas), primary distillation tower 1 tower base oil heats through atmospheric pressure kiln 4, entering atmospheric tower 2, the Main Function of air-distillation is the light ends oil isolating boiling point from crude oil less than 350 DEG C.Atmospheric tower 2 tower top also can produce on-condensible gas (waste gas).
Atmospheric tower 2 is connected with vacuum tower 3 through vacuum furnace 5 by pipeline；Often base oil is after vacuum furnace 5 heats, due to the suction function of vacuum tower 3, and partly oil product gasification, at vacuum tower 3 feed zone, the vaporized residual oil in end enters at the bottom of tower, and the wax oil component of gasification gradually rises along tower tray, obtains subtracting one, two, three, four line products under the effect of backflow.
Tower top at primary distillation tower 1, atmospheric tower 2 and vacuum tower 3 is all connected by pipeline gas separatory tank 6, the port of export at gas separatory tank 6 is connected with catalysed fractionation return tank of top of the tower 10 by compressor 7, catalysed fractionation return tank of top of the tower 10 is connected with catalytic fractionator 11, and the port of export of catalysed fractionation return tank of top of the tower 10 connects catalytic unit absorbing-stabilizing system 8.Compressor 7 is liquid rotary compressor.Enter compressor 7 by gas separatory tank 6 tank deck gas, after compressor 7 boosts, deliver to the entrance of catalytic unit fractional distillation return tank of top of the tower 10, through catalytic unit absorbing-stabilizing system 8, to reclaim the liquefied gas component in fixed gas.Recycled by recovered liquid activating QI component.
The tower top of primary distillation tower 1 and atmospheric tower 2 enters gas pipe network 9 by pipeline, and the tower top of vacuum tower 3 enters gas pipe network 9 by decreasing push, increasing pressure device 13；Gas pipe network 9 is connected with the fuel gas entrance of atmospheric pressure kiln 4 and vacuum furnace 5.By gas pipe network 9 gas after desulfurization is atmospheric pressure kiln 4 and vacuum furnace 5 makees fuel gas.
Primary distillation tower 1, atmospheric tower 2 overhead gas enter gas separatory tank 6 through same pipeline, and vacuum tower 3 overhead gas individually enters and subtracts top separatory tank 12.Retain simultaneously and individually enter former gas pot pipeline flow process.
Technological process:
Raw oil after desalting and dewatering heat exchange enters primary distillation tower 1, and tower top has on-condensible gas (waste gas).Primary distillation tower 1 tower base oil heats through atmospheric pressure kiln 4, enters atmospheric tower 2, and the Main Function of air-distillation is the light ends oil isolating boiling point from crude oil less than 350 DEG C.Atmospheric tower 2 tower top also can produce on-condensible gas (waste gas).
Atmospheric tower 2 base oil is after vacuum furnace 5 heats, due to the suction function of vacuum tower 3, and partly oil product gasification, at vacuum tower feed zone, the vaporized residual oil in end enters at the bottom of tower, and the wax oil component of gasification gradually rises along tower tray, obtains subtracting one, two, three, four line products under the effect of backflow.The fixed gas of vacuum tower 3 is to low pressure gas separatory tank 6.Low pressure gas separatory tank 6 is the outer catalytic fractionator return tank of top of the tower 10 delivering to catalytic unit after going liquid rotary compressor 7 boosting, carry out gas-liquid separation, liquid is back to catalytic fractionator 11, and gas enters catalytic unit absorbing-stabilizing system 8, to reclaim the liquefied gas component in fixed gas.
The tower top fixed gas of primary distillation tower 1 and atmospheric tower 2 is individually drawn by pipeline, entering gas separatory tank 6, tank deck gas enters compressor 7, delivers to catalytic unit fractional distillation return tank of top of the tower entrance after compressor 7 boosts, through catalytic unit absorbing-stabilizing system 8, to reclaim the liquefied gas component in fixed gas；Vacuum tower 3 tower top waste gas Ye Yin mono-tunnel out enters gas separatory tank 6, catalytic unit absorbing-stabilizing system 8 is jointly delivered to primary distillation tower 1 and atmospheric tower 2 tower top waste gas out, retain simultaneously and individually enter former gas pot pipeline flow process, be atmospheric pressure kiln 4 by the gas pipe network 9 gas after desulfurization and vacuum furnace 5 makees fuel gas.
This utility model is not limited to above-mentioned embodiment, in the ken that those skilled in the art are possessed, it is also possible to make a variety of changes on the premise of without departing from this utility model objective, and the content after change still falls within protection domain of the present utility model.
Claims (4)
1. atmospheric and vacuum distillation unit three pushes up exhaust gas recycle apparatus, including primary distillation tower, atmospheric tower and vacuum tower, it is characterized in that: being connected by pipeline at the bottom of the tower of described primary distillation tower has atmospheric pressure kiln, the port of export of described atmospheric pressure kiln is connected with atmospheric tower by pipeline, and described atmospheric tower is connected with vacuum tower through vacuum furnace by pipeline；
Described primary distillation tower, the tower top of atmospheric tower all have gas separatory tank by pipeline connection, the tower top of described vacuum tower is connected with gas separatory tank by subtracting top separatory tank, the port of export of described gas separatory tank is connected with catalysed fractionation return tank of top of the tower by compressor, and the outlet of described catalysed fractionation return tank of top of the tower connects has catalytic unit absorbing-stabilizing system to connect.
Atmospheric and vacuum distillation unit three the most according to claim 1 pushes up exhaust gas recycle apparatus, it is characterised in that: the tower top of described primary distillation tower and atmospheric tower enters gas pipe network by pipeline；The tower top of described vacuum tower enters gas pipe network by decreasing push, increasing pressure device, and described gas pipe network is connected with the fuel gas entrance of atmospheric pressure kiln and vacuum furnace.
Atmospheric and vacuum distillation unit three the most according to claim 2 pushes up exhaust gas recycle apparatus, it is characterised in that: described primary distillation tower, atmospheric tower overhead gas enter gas separatory tank through same pipeline, and vacuum tower overhead gas individually enters and subtracts top separatory tank.
Atmospheric and vacuum distillation unit three the most according to claim 3 pushes up exhaust gas recycle apparatus, it is characterised in that: described compressor is liquid rotary compressor.
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| CN201620238967.8U CN205420292U (en) | 2016-03-28 | 2016-03-28 | Atmospheric and vacuum unit triple tops waste gas recovery recycles device |
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| CN201620238967.8U CN205420292U (en) | 2016-03-28 | 2016-03-28 | Atmospheric and vacuum unit triple tops waste gas recovery recycles device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107057755A (en) * | 2016-11-28 | 2017-08-18 | 北京理工大学 | A kind of pre- hydrodesulfurization of sulfur-bearing/sour crude |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107057755A (en) * | 2016-11-28 | 2017-08-18 | 北京理工大学 | A kind of pre- hydrodesulfurization of sulfur-bearing/sour crude |
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