CN114774160A - Cracked heavy oil storage and conveying equipment and method for storing and conveying cracked heavy oil - Google Patents
Cracked heavy oil storage and conveying equipment and method for storing and conveying cracked heavy oil Download PDFInfo
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- CN114774160A CN114774160A CN202210596431.3A CN202210596431A CN114774160A CN 114774160 A CN114774160 A CN 114774160A CN 202210596431 A CN202210596431 A CN 202210596431A CN 114774160 A CN114774160 A CN 114774160A
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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
- C10G53/00—Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes
- C10G53/02—Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes plural serial stages only
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/009—Heating or cooling mechanisms specially adapted for settling tanks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/24—Feed or discharge mechanisms for settling tanks
- B01D21/2405—Feed mechanisms for settling tanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/28—Mechanical auxiliary equipment for acceleration of sedimentation, e.g. by vibrators or the like
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/30—Control equipment
- B01D21/302—Active control mechanisms with external energy, e.g. with solenoid valve
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/30—Control equipment
- B01D21/34—Controlling the feed distribution; Controlling the liquid level ; Control of process parameters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C19/00—Other disintegrating devices or methods
- B02C19/22—Crushing mills with screw-shaped crushing means
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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
- C10G31/00—Refining of hydrocarbon oils, in the absence of hydrogen, by methods not otherwise provided for
-
- 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
- C10G31/00—Refining of hydrocarbon oils, in the absence of hydrogen, by methods not otherwise provided for
- C10G31/06—Refining of hydrocarbon oils, in the absence of hydrogen, by methods not otherwise provided for by heating, cooling, or pressure treatment
Abstract
The invention discloses storage and conveying equipment for cracked heavy oil and a method for storing and conveying the cracked heavy oil, and belongs to the field of thermal cracking equipment. Comprises a heavy oil buffer tank and a settling tank; the heavy oil cache tank comprises a tank body, a spray head arranged in the tank body and a spray pipeline connected with the spray head; the settling tank comprises a tank body, a first screw shaft, a second screw shaft, a third screw shaft, a first screw blade, a second screw blade, a third screw blade, a first driving piece, a second driving piece and a third driving piece; the second helical blade is meshed with the first helical blade; the third helical blade is meshed with the first helical blade; and the third driving piece is connected with the third screw shaft and drives the third screw shaft to rotate along the direction opposite to the rotating direction of the second screw shaft. The device is applied to the storage and conveying aspect of the cracked heavy oil, solves the technical problem that coke blocks the inner wall of the oil storage tank and the oil gas outlet pipeline in the conventional cracked heavy oil storage and conveying equipment, and has the characteristics of capability of effectively preventing coke from blocking and high production efficiency.
Description
Technical Field
The invention belongs to the field of thermal cracking equipment, and particularly relates to storage and conveying equipment for cracked heavy oil and a method for storing and conveying the cracked heavy oil.
Background
The waste tires are called black pollution in the industry, and the recovery and treatment technology of the waste tires is always a worldwide problem and also an environmental protection problem. Relevant statistics show that about 15 hundred million tires are scrapped every year in the world at present, and more than 400 million waste tires are produced every day. If the part of waste tires can be reasonably utilized, the effects of limited resources and unlimited circulation can be really realized, and meanwhile, huge economic value can be created.
Utilize traditional thermal cracking equipment to carry out the in-process of schizolysis to solid useless recovery raw materials such as waste plastics, rubber waste and domestic waste, can produce and smuggle the high temperature oil gas of a large amount of coke matter secretly, along with the lapse of time, the coke matter condenses gradually and subsides, leads to the effective aperture of oil gas storage device jar internal wall and oil-out, oil gas pipeline to diminish, and then can block up the pipeline, influences equipment and uses, consequently optimizes and innovate very necessary to oil gas storage device.
However, the existing storage and transportation equipment for cracked heavy oil is not provided with a coke cleaning unit, and a large amount of high-temperature oil gas with coke is carried along with the time, and is gradually condensed and settled to cause the blockage of the inner wall of the oil storage tank and an oil gas outlet pipeline. Because of the texture of the coke is comparatively thick, waste time and energy during the clearance, in addition, can influence the normal of high temperature oil gas and pass through after the oil gas outlet pipe blockage, very easily cause the incident.
Disclosure of Invention
The details of one or more embodiments of the invention are set forth in the accompanying drawings and the description below to provide a more concise and understandable description of the invention.
The invention provides cracked heavy oil storage and conveying equipment and a method for storing and conveying cracked heavy oil, solves the technical problem that coke blocks the inner wall of an oil storage tank and an oil gas outlet pipeline in the conventional cracked heavy oil storage and conveying equipment, and has the characteristics of capability of effectively preventing coke blocking and high production efficiency.
In one aspect, the invention discloses a storage and transportation device for cracked heavy oil, which comprises
The heavy oil buffer tank is used for collecting and temporarily storing heavy oil components generated by thermal cracking; and
the settling tank is arranged below the heavy oil cache tank, is connected with a discharge port of the heavy oil cache tank, and is used for collecting and settling heavy oil components from the heavy oil cache tank and forming coke;
the heavy oil buffer tank further comprises
A tank body;
the spray head is arranged in the tank body;
the spray pipeline is connected with the spray head;
the settling tank further comprises
A box body;
the first spiral shaft is arranged perpendicular to the discharging direction of the discharging port of the heavy oil cache tank and is arranged in the box body right below the discharging port of the heavy oil cache tank;
the second spiral shaft is parallel to the first spiral shaft, is arranged in the box body right below the discharge hole of the heavy oil cache tank and is positioned on one side of the first spiral shaft;
the third screw shaft is parallel to the first screw shaft, is arranged in the box body right below the discharge port of the heavy oil buffer tank and is positioned on the other side of the first screw shaft;
the first spiral blade is sleeved outside the first spiral shaft;
the second spiral blade is sleeved outside the second spiral shaft and meshed with the first spiral blade;
the third helical blade is sleeved outside the third helical shaft and meshed with the first helical blade;
the first driving piece is connected with the first screw shaft and drives the first screw shaft to rotate;
the second driving piece is connected with the second screw shaft and drives the second screw shaft to rotate;
the third driving piece is connected with the third screw shaft and drives the third screw shaft to rotate along the direction opposite to the rotating direction of the second screw shaft;
the first driving part, the second driving part and the third driving part respectively drive the first screw shaft, the second screw shaft and the third screw shaft to rotate, the first screw blade, the second screw blade and the third screw blade respectively rotate along with the first screw shaft, the second screw shaft and the third screw shaft, the rotating directions of the second screw blade and the third screw blade are opposite, the first screw blade and the second screw blade are meshed to rotate, the first screw blade and the third screw blade are meshed to rotate, the coke formed by precipitation in the precipitation box is meshed to rotate due to the first screw blade and the second screw blade, and the first helical blade and the third helical blade are meshed to rotate, so that the coke is sheared mutually and extruded downwards to crush and refine the coke, meanwhile, the spray head sprays the tank body and dilutes the crushed and refined coke by cooling oil flowing down from the discharge port of the heavy oil buffer tank, and then conveys the coke backwards.
In some of these embodiments, the heavy oil cache tank further comprises
The first jacket is sleeved outside the tank body and internally filled with cooling water;
the settling tank also comprises
And the heating assembly is arranged in the box body and heats the box body.
In some of these embodiments, the heavy oil cache tank further comprises
And the pressurizing assembly is communicated with the tank body and is used for pressurizing the tank body.
In some of these embodiments, the boost assembly further comprises
A vortex fan;
the vortex fan air supply pipeline is communicated with the tank body;
and the fan control valve is arranged on the air supply pipeline of the vortex fan.
In some of the embodiments, further comprises
The screw pump is arranged below the settling tank, the feed inlet is connected with a discharge port of the settling tank, the upper part of the feed inlet is in an inverted cone shape, and the lower part of the feed inlet is in a square shape.
In some of the embodiments, further comprises
The main conveying pipeline is connected with a discharge port of the screw pump;
the outward conveying pipeline is used for outputting cooling oil;
and the feed inlet is connected with the main conveying pipeline, one discharge outlet is connected with the spraying pipeline, and the other discharge outlet is connected with the external conveying pipeline.
In some of these embodiments, also include
The material loading level indicator is arranged at the upper part of the settling tank;
the feeding level meter is arranged at the lower part of the settling tank;
the first electric control valve is arranged on the spray pipeline;
the second electric control valve is arranged on the external conveying pipeline;
and the PLC is electrically connected with the feeding level indicator, the discharging level indicator, the first electric control valve and the second electric control valve.
In some of these embodiments, also include
The discharge port of the air cooling tank is connected with the feed port of the heavy oil cache tank;
the air cooling tank and the heavy oil cache tank are in same-diameter butt joint through flanges.
The air cooling tank also comprises
And the second jacket is sleeved outside the air cooling tank and internally filled with cooling water.
In some of these embodiments, also include
And the condenser is vertically arranged at the upper part of the heavy oil buffer tank.
In another aspect, the invention further provides a method for storing and transporting the cracked heavy oil by the cracked heavy oil storing and transporting equipment, which comprises the following steps
In the jar body: high-temperature cracked heavy oil enters a tank body of a heavy oil cache tank, is cooled under the cooling effect of a first jacket and flows downwards into a settling tank body through a discharge port of the heavy oil cache tank under the spraying of a spray head;
in the box: the first driving piece, the second driving piece and the third driving piece respectively drive the first screw shaft, the second screw shaft and the third screw shaft to rotate, the first screw blade, the second screw blade and the third screw blade respectively rotate along with the first screw shaft, the second screw shaft and the third screw shaft, the rotating directions of the second screw blade and the third screw blade are opposite, the first screw blade and the second screw blade are meshed to rotate, the first screw blade and the third screw blade are meshed to rotate, the coke quality formed by precipitation in the precipitation box is sheared and extruded downwards due to the meshed rotation of the first screw blade and the second screw blade and the meshed rotation of the first screw blade and the third screw blade, so that the coke quality is crushed and refined;
the cooling oil which flows downwards into the box body of the settling tank through a discharge hole of the heavy oil buffer tank dilutes and conveys the crushed and refined coke backwards; wherein the content of the first and second substances,
when the storage amount of the cooling oil and the coke in the tank body reaches the maximum value, the cooling oil which flows downwards into the box body of the settling tank through the discharge hole of the heavy oil cache tank dilutes the crushed and refined coke and outputs the diluted coke backwards;
when the storage amount of the cooling oil and the coke in the tank body does not reach the maximum value, the cooling oil which flows downwards into the box body of the settling tank through the discharge hole of the heavy oil cache tank dilutes the crushed and refined coke, and the crushed and refined coke is conveyed backwards and enters the spray head through the spray pipeline to circularly spray the tank body.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a cracked heavy oil storage and conveying device, wherein a spray head is arranged on a tank body of a heavy oil cache tank, heavy oil collected in the tank body is stirred, precipitated coke substances at the bottom of the tank body are washed, and impurity precipitation aggregation such as tar is prevented;
the invention provides cracked heavy oil storage and conveying equipment, wherein a first jacket is arranged outside a tank body of a heavy oil cache tank, cooling water is introduced into the first jacket, so that the coking of the inner wall of the tank body of the heavy oil cache tank is further prevented, meanwhile, a heating device is arranged in a settling tank, so that the poor flowability of residual oil caused by the cold transfer of natural gas is prevented, the smooth flowing of cracked heavy oil in each device is improved, and the blockage of pipelines is avoided;
the invention provides a cracked heavy oil storage and conveying device.A pressurizing assembly is arranged at the upper part of a heavy oil cache tank, and once the internal circulation of the tank is not smooth, the pressurizing assembly is started to increase pressure to the tank, so that the aim of preventing the whole storage and conveying system from being blocked under multiple pipelines is fulfilled;
the invention provides storage and conveying equipment for cracked heavy oil, which is characterized in that in order to prevent a feed inlet of a pump body from being blocked, the feed inlet is designed into a tapered square feed inlet on the basis of a tubular inlet of a traditional screw pump, so that the defect that the feed inlet is easy to block is greatly reduced;
the invention provides a cracked heavy oil storage and conveying device.A settling tank body is provided with a loading level indicator and a unloading level indicator, and a conveying pump is controlled to spray or carry out outward according to the liquid level condition in a heavy oil cache tank by utilizing PLC (programmable logic controller) for linkage;
the invention provides a cracked heavy oil storage and conveying device.A cylinder body of an air cooling tank is designed into a jacket form, condensed water is introduced into the jacket of the air cooling tank for cooling, and the influence of high-temperature oil steam on the service life of the device due to high-temperature coking on the inner wall of the air cooling tank is prevented; in order to prevent the connecting pipeline between the air cooling tank and the heavy oil cache tank from being blocked, the connecting pipeline between the traditional air cooling tank and the heavy oil cache tank is cancelled, and the flange at the lower part of the air cooling tank is in same-diameter butt joint with the inlet flange of the heavy oil cache tank, so that the defect of connecting pipe blockage is avoided.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural diagram of a cracked heavy oil storage and transportation facility provided by an embodiment of the invention;
FIG. 2 is another schematic structural diagram of a storage and transportation apparatus for cracked heavy oil according to an embodiment of the present invention;
description of the drawings: 101. a tank body; 102. a spray head; 103. a spray pipe; 104. a pressurizing assembly; 105. a first jacket; 201. a box body; 202. a first screw shaft; 203. a second screw shaft; 204. a third screw axis; 205. a first helical blade; 206. a second helical blade; 207. a third helical blade; 208. a first driving member; 209. a second driving member; 210. a third driving member; 211. a heating assembly; 3. a screw pump; 4. a main conveying pipeline; 5. an outward conveying pipeline; 6. a loading level indicator; 7. a level meter; 8. a first electrically controlled valve; 9. a second electrically controlled valve; 10. an air-cooled tank; 11. a condenser.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments provided by the present invention, belong to the protection scope of the present invention.
It is obvious that the drawings in the following description are only examples or embodiments of the invention, from which it is possible for a person skilled in the art, without inventive effort, to apply the invention also in other similar contexts. Moreover, it should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions must be made to achieve the developers' specific goals, such as compliance with system-related and business-related constraints, which may vary from one implementation to another.
Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one of ordinary skill in the art that the described embodiments of the present invention can be combined with other embodiments without conflict.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of the terms "a" and "an" and "the" and similar referents in the context of describing the invention are not to be construed as limiting in number, and may be construed to cover both the singular and the plural. The present invention relates to the terms "comprises," "comprising," "includes," "including," "has," "having" and any variations thereof, which are intended to cover non-exclusive inclusions; for example, a process, method, system, article, or apparatus that comprises a list of steps or modules (elements) is not limited to the listed steps or elements, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. The terms "connected," "coupled," and the like in the description of the invention are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The term "plurality" as used herein means two or more. "and/or" describes an association relationship of associated objects, meaning that three relationships may exist, for example, "A and/or B" may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. The terms "first" and "second" as referred to herein merely distinguish between similar objects and do not denote a particular ordering for the objects.
The embodiment of the invention provides a cracked heavy oil storage and transportation device, and fig. 1 and 2 are schematic structural diagrams of the cracked heavy oil storage and transportation device according to the embodiment of the invention. Referring to fig. 1 and 2, the cracked heavy oil storage and transportation equipment comprises a heavy oil buffer tank and a settling tank; the heavy oil buffer tank is used for collecting and temporarily storing heavy oil components generated by thermal cracking; the settling tank is arranged below the heavy oil cache tank, is connected with a discharge port of the heavy oil cache tank and is used for collecting and settling heavy oil components from the heavy oil cache tank and forming coke; the heavy oil cache tank further comprises a tank body 101, spray heads 102 arranged in the tank body 101, and spray pipelines 103 connected with the spray heads 102, wherein optionally, 6 spray heads 102 are uniformly arranged in the tank body 101, and are used for stirring the heavy oil collected in the tank body 101 and washing the precipitated coke at the bottom of the tank body 101 to prevent the precipitation and aggregation of impurities such as tar and the like; the settling tank further comprises a tank body 201, a first screw shaft 202, a second screw shaft 203, a third screw shaft 204, a first screw blade 205, a second screw blade 206, a third screw blade 207, a first driving member 208, a second driving member 209 and a third driving member 210; the first spiral shaft 202 is arranged perpendicular to the discharging direction of the discharging port of the heavy oil buffer tank and is arranged in the box body 201 right below the discharging port of the heavy oil buffer tank; the second spiral shaft 203 is parallel to the first spiral shaft 202, is arranged in the box body 201 right below the discharge port of the heavy oil buffer tank and is positioned on one side of the first spiral shaft 202; the third screw shaft 204 is parallel to the first screw shaft 202, is arranged in the box body 201 right below the discharge port of the heavy oil buffer tank and is positioned on the other side of the first screw shaft 202; the first helical blade 205 is sleeved outside the first helical shaft 202; the second helical blade 206 is sleeved outside the second helical shaft 203 and meshed with the first helical blade 205; the third helical blade 207 is sleeved outside the third helical shaft 204 and meshed with the first helical blade 205; a first driving member 208 is connected with the first screw shaft 202 and drives the first screw shaft 202 to rotate; the second driving piece 209 is connected with the second spiral shaft 203 and drives the second spiral shaft 203 to rotate; a third driving member 210 is connected to the third screw axis 204 for driving the third screw axis 204 to rotate in the direction opposite to the rotation direction of the second screw axis 203; because the spiral blades are meshed and rotated, the materials are sheared and extruded downwards, and the coke blocks are crushed and refined to be mutually dissolved with the condensed oil, so that the purposes of coke cleaning and blockage prevention are achieved. When cracked heavy oil is stored and conveyed, the first driving piece 208, the second driving piece 209 and the third driving piece 210 respectively drive the first screw shaft 202, the second screw shaft 203 and the third screw shaft 204 to rotate, the first screw blade 205, the second screw blade 206 and the third screw blade 207 respectively rotate along with the first screw shaft 202, the second screw shaft 203 and the third screw shaft 204, the rotation directions of the second screw blade 206 and the third screw blade 207 are opposite, the first screw blade 205 and the second screw blade 206 are meshed to rotate, the first screw blade 205 and the third screw blade 207 are meshed to rotate, coke formed by precipitation in the precipitation box is meshed to rotate due to the first screw blade 205 and the second screw blade 206, and the first screw blade 205 and the third screw blade 207 are meshed to rotate, so that the coke is sheared with each other and pressed downwards to crush the coke, and fine the coke, meanwhile, the spray head 102 sprays the cooling oil flowing down from the discharge port of the heavy oil buffer tank in the tank 101 to buffer the crushed coke Diluting and conveying backwards. This embodiment provides a schizolysis heavy oil storage conveying equipment, set up shower nozzle 102 on the jar body 101 of heavy oil buffer tank, stir the heavy oil of collecting in jar body 101, wash the sediment coke matter of jar body 101 bottom simultaneously, prevent impurity such as tar and deposit the set, in addition, set up the setting tank in the bottom of heavy oil buffer tank, be provided with the triple helix on the box 201, the stirring extrudees the coke matter, crush the coke matter bulk thing after will polymerizing through stirring extrusion back and forth, outwards carry after the cooling oil that combines to spray down dilutes the heavy component that takes the coke matter, the problem of coke matter jam oil storage tank inner wall and oil gas outlet pipeline has effectively been avoided, have and can effectively prevent coke matter jam, characteristics that production efficiency is high.
In order to prevent coking on the inner wall of the tank body 101 of the heavy oil buffer tank, and simultaneously prevent the residual oil from flowing poorly due to weather cold, smooth flowing of cracked heavy oil in each device is improved, and pipeline blockage is avoided, the heavy oil buffer tank further comprises a first jacket 105 which is sleeved outside the tank body 101 and is internally communicated with cooling water, and the settling tank further comprises a heating component 211 which is arranged in the tank body 201 and used for heating the tank body 201.
In order to further prevent blockage and ensure smooth delivery of cracked heavy oil, the heavy oil cache tank further comprises a pressurizing assembly 104 communicated with the tank body 101 and used for pressurizing the tank body 101, and optionally, the pressurizing assembly 104 further comprises a vortex fan, a vortex fan air supply pipeline communicated with the tank body 101, and a fan control valve arranged on the vortex fan air supply pipeline.
Regarding the heavy oil buffer tank, specifically, the heavy oil buffer tank is a container for collecting and temporarily storing heavy components, the oil vapor inlet is vertically arranged on the left side of the upper part of the tank body 101, and a flange on the upper part of the tank body is connected with a flange on the lower part of the air cooling tank 10 in an equal diameter manner. The on-site thermometer is vertically arranged on the leftmost tank body 101 of the heavy oil cache tank, the temperature of oil gas in the tank can be detected in real time, and the flow of cooling water in the jacket can be adjusted according to the temperature of the oil gas in the tank. A local pressure gauge is vertically arranged on the middle tank body 101 of the heavy oil cache tank and used for detecting the oil gas pressure in the tank in real time. In order to facilitate cleaning and maintenance, a heavy oil buffer tank manhole is arranged in the middle of the tank body 101, and a blind flange is arranged on the upper portion of the tank body. A pressurization air inlet is vertically arranged on the upper portion of the heavy oil cache tank close to the right side, a pressure air source is provided by a vortex fan, an air outlet of the vortex fan is connected with an air supply pipeline of the vortex fan, and a fan control valve is arranged on an air transmission pipeline and used for adjusting the air quantity and the pressure. A first jacket 105 is arranged on the heavy oil cache tank body 101, a water inlet is arranged at the bottom of the left tank body 101, a water return port is arranged at the upper part of the right tank body 101, a sewage discharge port is arranged at the lower part of a sealing head of the right tank body 101, and a liquid level meter is arranged on the left sealing head. Optionally, the spray head 102 is a spiral spray head 102, the spray pipeline 103 is provided with 6 sets of three-way oil outlets, which are connected with the oil inlets of the cyclic spray branch pipelines and the flow control valves, the flow control valves are connected with the cyclic spray branch pipelines, and the spiral spray head 102 is installed at the end of the cyclic spray branch pipeline.
Regarding the settling tank, specifically, the oil vapor after thermal cracking contains light components and heavy components, and also contains carbon black dust and coke, if not treated, the oil vapor will adhere to the bottom of the oil storage tank after a long time, and more seriously will block the conveying pipeline, so that the oil outlet can be blocked after a long time without redesigning the traditional oil storage tank, and the conveying of cooling oil is difficult. According to the invention, the settling tank is arranged at the lower part of the tank body 101 of the heavy oil cache tank, 3 groups of screw machines are matched to work at the lower part of the tank body 201 on the front surface of the tank body 201 of the settling tank, and when the heavy oil cache tank operates, one of the screw machines is in a left-handed mode, and the other screw machine is in a right-handed mode. Because the helical blades are meshed and rotated, the materials are sheared mutually and extruded downwards, and the coke blocks are crushed and refined to be mutually dissolved with the condensed oil, so that the purposes of coke cleaning and blockage prevention are achieved. It should be noted that the spiral coke cleaning components are all assembled by modules, so that the disassembly is very convenient, three groups of spirals are matched to run, large coke substances in the mixed oil can be directly crushed, the oil-gas channel is prevented from being blocked, the spiral coke cleaning components can be stably used for a long time, and the precipitated substances such as the coke substances in the tank body 101 do not need to be cleaned manually.
Further still include screw pump 3, screw pump 3 locates the setting tank below, and the feed inlet links to each other with the setting tank discharge gate, for preventing that pump body feed inlet from blockking up, on the basis of 3 tubulose imports of traditional screw pump, design the feed inlet into the tapered square feed inlet of area, specifically, feed inlet upper portion is the back taper, and the lower part is the square, greatly reduced the easy drawback of blockking up of feed inlet. The screw pump 3 is a main device for outputting cooling oil and circularly spraying, a discharge port of the feed inlet settling tank is connected, a control valve is arranged at the discharge port, and the screw pump further comprises a Y-shaped filter valve and a check valve, wherein the Y-shaped filter valve is connected with the control valve. And a pressure gauge is also arranged on the pipeline at the discharge hole of the screw pump 3.
Further, the device also comprises a main conveying pipeline 4 connected with a discharge hole of the screw pump 3, an external conveying pipeline 5 used for outputting cooling oil, and a tee joint; the three-way feed inlet is connected with the main conveying pipeline 4, one discharge outlet is connected with the spraying pipeline 103, and the other discharge outlet is connected with the external conveying pipeline 5. When the heavy oil storage tank needs to be circularly sprayed, cooling oil passes through the spraying pipeline 103 and sprays the inner wall of the tank body 101 through the spray head 102, when materials in the settling tank reach the maximum storage value, the cooling oil needs to be transported outwards, and then the cooling oil is transported outwards through the outward transport pipeline 5, so that the circulating work is repeatedly carried out. Based on this, in order to further improve degree of automation, still including locating the last level indicator 6 on settling tank upper portion, locating the lower level indicator 7 of settling tank lower part, locate first electric control valve 8 on shower 103, locate the second electric control valve 9 on outer pipeline 5 to and the PLC who is connected with last level indicator 6, lower level indicator 7, first electric control valve 8 and the electricity of second electric control valve 9. And the screw pump 3 is controlled to spray or output according to the liquid level conditions in the heavy oil buffer tank detected by the loading level indicator 6 and the unloading level indicator 7 by utilizing PLC (programmable logic controller) for interlocking. Further, the screw driver further comprises a PLC electrically connected with the first driver 208, the second driver 209 and the third driver 210, and the first screw shaft 202, the second screw shaft 203 and the third screw shaft 204 are controlled to rotate clockwise or counterclockwise as required under the control of the PLC.
The heavy oil storage tank is characterized by further comprising an air cooling tank 10 with a discharge hole connected with a feed inlet of the heavy oil storage tank, and in order to prevent the blockage of a connecting pipeline between the air cooling tank 10 and the heavy oil storage tank, the connecting pipeline between the traditional air cooling tank 10 and the heavy oil storage tank is eliminated, and the lower flange of the air cooling tank 10 is in same-diameter butt joint with the inlet flange of the heavy oil storage tank, so that the defect of connection pipe blockage is avoided. The air cooling tank 10 further comprises a second jacket which is sleeved outside the air cooling tank 10 and is internally communicated with cooling water, and coking of high-temperature oil steam on the inner wall of the air cooling tank 10 is effectively avoided. High-temperature oil steam generated after the waste such as waste rubber and plastic is subjected to high-temperature pyrolysis in the thermal cracking kettle enters the inlet control valve through the conveying pipeline and then directly enters the air cooling tank 10 through the high-temperature oil steam inlet pipeline. The air cooling tank 10 is a first container through which high-temperature oil vapor passes, in order to prevent coking of the high-temperature oil vapor on the inner wall of the air cooling tank 10, a cooling jacket, namely a second jacket, is arranged outside the cylinder of the air cooling tank 10, a water inlet is arranged at the lower part of the cylinder at the right side of the air cooling tank 10, and a water return port is arranged at the upper part of the left side of the cylinder of the air cooling tank 10. In order to detect the temperature and pressure of the entering oil vapor, an on-site thermometer is vertically arranged on the left side of the upper part of the sealing head of the air cooling tank 10, and an on-site pressure gauge is vertically arranged on the right side of the upper part of the sealing head of the air cooling tank 10. The high-temperature oil vapor inlet of the air cooling tank 10 is connected with a high-temperature oil vapor inlet pipeline. It should be noted that the purpose of introducing cooling water into the first jacket 105 of the air cooling tank 10 is mainly to achieve the effect of cooling, so that the cooling water absorbs heat and takes away higher temperature in the oil vapor, and besides preventing coking on the inner wall of the tank body 101, the oil vapor can be cooled in advance, and the yield of oil products is improved. The manufacturing method of the jacket of the tank body 101 is that on the basis of the original cylinder body, the cylinder body of the outer jacket is cut off from the middle line, and then an upper closing plate and a lower closing plate are additionally arranged on the butt welding.
The system further comprises a condenser 11 vertically installed on the upper portion of the heavy oil cache tank, and an oil gas inlet flange of a lower end enclosure of the condenser is connected with an oil vapor outlet flange of the heavy oil cache tank. A condensing tube is arranged in the cold cylinder of the condenser 11, a water inlet of the condenser 11 is arranged at the lower part of the cylinder at the right side, and a water return port is arranged at the upper part of the cylinder at the left side. A local thermometer is vertically arranged on the left side of an end socket on the upper portion of the condenser 11, a local pressure gauge is vertically arranged on the right side of the end socket, an oil vapor outlet of the condenser 11 is arranged in the center of the end socket and connected with an oil gas output main pipeline, and a control valve is further arranged on the oil gas output main pipeline of the condenser 11.
In another aspect, the invention provides a method for storing and transferring cracked heavy oil by using the cracked heavy oil storing and transferring equipment, which comprises
In the tank body 101: high-temperature cracked heavy oil enters a tank body 101 of a heavy oil cache tank, is cooled under the cooling effect of a first jacket 105, is sprayed by a spray head 102, and flows downwards into a settling tank body 201 through a discharge port of the heavy oil cache tank;
in the case 201: the first driving member 208, the second driving member 209 and the third driving member 210 respectively drive the first screw shaft 202, the second screw shaft 203 and the third screw shaft 204 to rotate, the first screw blade 205, the second screw blade 206 and the third screw blade 207 respectively rotate along with the first screw shaft 202, the second screw shaft 203 and the third screw shaft 204, the rotating directions of the second screw blade 206 and the third screw blade 207 are opposite, the first screw blade 205 and the second screw blade 206 are meshed to rotate, the first screw blade 205 and the third screw blade 207 are meshed to rotate, the coke quality formed by precipitation in the precipitation box is meshed to rotate due to the first screw blade 205 and the second screw blade 206, and the first screw blade 205 and the third screw blade 207 are meshed to rotate, so that the coke quality is sheared and extruded downwards to crush and refine the coke quality;
the cooling oil which flows downwards into the box body 201 of the settling tank through the discharge hole of the heavy oil buffer tank dilutes the crushed and refined coke and conveys the coke backwards; wherein the content of the first and second substances,
when the storage amount of the cooling oil and the coke in the tank body 101 reaches the maximum value, the cooling oil which flows downwards into the box body 201 of the settling tank through the discharge hole of the heavy oil cache tank dilutes the crushed and refined coke and outputs the diluted coke backwards;
when the storage amount of the cooling oil and the coke in the tank body 101 does not reach the maximum value, the cooling oil which flows downwards into the box body 201 of the settling tank through the discharge port of the heavy oil buffer tank dilutes the crushed and refined coke, and the crushed and refined coke is conveyed backwards and enters the spray head 102 through the spray pipeline 103 to carry out circulating spray on the tank body 101.
All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent should be subject to the appended claims.
Claims (10)
1. The storage and conveying equipment for the cracked heavy oil is characterized by comprising
The heavy oil buffer tank is used for collecting and temporarily storing heavy oil components generated by thermal cracking; and
the settling tank is arranged below the heavy oil cache tank, is connected with a discharge port of the heavy oil cache tank, and is used for collecting and settling heavy oil components from the heavy oil cache tank and forming coke;
the heavy oil buffer tank further comprises
A tank body;
the spray head is arranged in the tank body;
the spray pipeline is connected with the spray head;
the settling tank further comprises
A box body;
the first spiral shaft is arranged perpendicular to the discharging direction of the discharging port of the heavy oil cache tank and is arranged in the box body right below the discharging port of the heavy oil cache tank;
the second spiral shaft is parallel to the first spiral shaft, is arranged in the box body right below the discharge hole of the heavy oil cache tank and is positioned on one side of the first spiral shaft;
the third screw shaft is parallel to the first screw shaft, is arranged in the box body right below the discharge port of the heavy oil buffer tank and is positioned on the other side of the first screw shaft;
the first spiral blade is sleeved outside the first spiral shaft;
the second spiral blade is sleeved outside the second spiral shaft and meshed with the first spiral blade;
the third spiral blade is sleeved outside the third spiral shaft and meshed with the first spiral blade;
the first driving piece is connected with the first screw shaft and drives the first screw shaft to rotate;
the second driving piece is connected with the second screw shaft and drives the second screw shaft to rotate;
the third driving piece is connected with the third screw shaft and drives the third screw shaft to rotate along the direction opposite to the rotating direction of the second screw shaft;
the first driving piece, the second driving piece and the third driving piece respectively drive the first screw shaft, the second screw shaft and the third screw shaft to rotate, the first screw blade, the second screw blade and the third screw blade respectively rotate along with the first screw shaft, the second screw shaft and the third screw shaft, the rotating directions of the second screw blade and the third screw blade are opposite, the first screw blade and the second screw blade are meshed to rotate, the first screw blade and the third screw blade are meshed to rotate, the coke quality formed by precipitation in the precipitation box is meshed to rotate due to the first screw blade and the second screw blade, and the first helical blade and the third helical blade are meshed to rotate, so that the coke is sheared mutually and extruded downwards to be crushed and refined, meanwhile, the spray head sprays the tank body and dilutes the crushed and refined coke by cooling oil flowing down from the discharge port of the heavy oil buffer tank, and then the coke is conveyed backwards.
2. The cracked heavy oil storage and transportation apparatus of claim 1, wherein the heavy oil surge tank further comprises
The first jacket is sleeved outside the tank body and internally filled with cooling water;
the settling tank also comprises
And the heating component is arranged in the box body and heats the box body.
3. The cracked heavy oil storage and transportation apparatus of claim 1, wherein the heavy oil surge tank further comprises
And the pressurizing assembly is communicated with the tank body and is used for pressurizing the tank body.
4. The cracked heavy oil storage and delivery apparatus of claim 3, wherein the pressure boosting assembly further comprises
A vortex fan;
the vortex fan air supply pipeline is communicated with the tank body;
and the fan control valve is arranged on the air supply pipeline of the vortex fan.
5. The cracked heavy oil storage and delivery apparatus of claim 1, further comprising
The screw pump is arranged below the settling tank, the feed inlet is connected with a discharge port of the settling tank, the upper part of the feed inlet is in an inverted cone shape, and the lower part of the feed inlet is in a square shape.
6. The cracked heavy oil storage and delivery apparatus of claim 5, further comprising
The conveying main pipeline is connected with a discharge port of the screw pump;
the outward conveying pipeline is used for outputting cooling oil;
and the feed port of the tee joint is connected with the main conveying pipeline, one discharge port of the tee joint is connected with the spraying pipeline, and the other discharge port of the tee joint is connected with the external conveying pipeline.
7. The cracked heavy oil storage and delivery apparatus of claim 5, further comprising
The material loading level indicator is arranged at the upper part of the settling tank;
the feeding level meter is arranged at the lower part of the settling tank;
the first electric control valve is arranged on the spray pipeline;
the second electric control valve is arranged on the external conveying pipeline;
and the PLC is electrically connected with the feeding level indicator, the discharging level indicator, the first electric control valve and the second electric control valve.
8. The cracked heavy oil storage and transfer apparatus of claim 1, further comprising
The discharge port of the air cooling tank is connected with the feed port of the heavy oil cache tank;
the air cooling tank and the heavy oil cache tank are in same-diameter butt joint through flanges.
The air cooling tank also comprises
And the second jacket is sleeved outside the air cooling tank and internally filled with cooling water.
9. The cracked heavy oil storage and delivery apparatus of claim 1, further comprising
And the condenser is vertically arranged at the upper part of the heavy oil buffer tank.
10. The method for storing and transporting cracked heavy oil by using cracked heavy oil storing and transporting equipment as claimed in any one of claims 1 to 9, which comprises
In the jar body: high-temperature cracked heavy oil enters a tank body of a heavy oil cache tank, is cooled under the cooling effect of a first jacket and flows downwards into a box body of a settling tank through a discharge port of the heavy oil cache tank under the spraying of a spray head;
in the box: the first driving part, the second driving part and the third driving part respectively drive the first screw shaft, the second screw shaft and the third screw shaft to rotate, the first screw blade, the second screw blade and the third screw blade respectively rotate along with the first screw shaft, the second screw shaft and the third screw shaft, the rotating directions of the second screw blade and the third screw blade are opposite, the first screw blade and the second screw blade are meshed to rotate, the first screw blade and the third screw blade are meshed to rotate, the coke formed by precipitation in the precipitation box is meshed to rotate due to the meshing of the first screw blade and the second screw blade, and the first screw blade and the third screw blade are meshed to rotate, so that the coke is sheared with each other and extruded downwards to crush and refine the coke;
the cooling oil which flows downwards into the box body of the settling tank through the discharge hole of the heavy oil buffer tank dilutes the crushed and refined coke and conveys the coke backwards; wherein the content of the first and second substances,
when the storage amount of the cooling oil and the coke in the tank body reaches the maximum value, the cooling oil which flows downwards into the tank body of the settling tank through the discharge port of the heavy oil cache tank dilutes the crushed and refined coke and outputs the diluted coke backwards;
when the storage amount of the cooling oil and the coke in the tank body does not reach the maximum value, the cooling oil which flows downwards into the box body of the settling tank through the discharge port of the heavy oil cache tank dilutes the crushed and refined coke, and the crushed and refined coke is conveyed backwards and enters the spray head through the spray pipeline to circularly spray the tank body.
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| CN202210596431.3A CN114774160B (en) | 2022-05-30 | 2022-05-30 | Storage and conveying equipment for cracked heavy oil and method for storing and conveying cracked heavy oil |
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