CN202687187U - Heating unit of large floating roof tank storing easy-coagulating and highly viscous crude oil at normal temperature - Google Patents
Heating unit of large floating roof tank storing easy-coagulating and highly viscous crude oil at normal temperature Download PDFInfo
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- CN202687187U CN202687187U CN 201220403049 CN201220403049U CN202687187U CN 202687187 U CN202687187 U CN 202687187U CN 201220403049 CN201220403049 CN 201220403049 CN 201220403049 U CN201220403049 U CN 201220403049U CN 202687187 U CN202687187 U CN 202687187U
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- floating roof
- oil
- highly viscous
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Abstract
The utility model discloses a heating unit of a large floating roof tank storing easy-coagulating and highly viscous crude oil at normal temperature. The heating unit comprises a steam pipe coil group placed below a floating cover, the beginning end of the pipe coil group is connected with a steam hose through a steam splitter, and a portion of the steam hose is fixedly arranged on an oil tank staircase. The steam hose passes over the top of a tank wall and is communicated with a steam admission pipeline arranged on the outer wall of a tank body, the terminal end of the pipe coil group is communicated with a water collection pit placed in the centre on the lower side of the floating cover through a condensate water outlet pipe, and a central drain-pipe placed at the bottom of the water collection pit extends downward to the bottom of the tank body and is communicated with the external of the tank body. The heating unit further comprises a send-receive oil pipeline composed of folding tubes. The heating unit can effectively improve the oil tank safety during the heating process of the easy-coagulating and highly viscous crude oil, and the safety and economic storage of the easy-coagulating and highly viscous crude oil are achieved.
Description
Technical field
The utility model is the large-scale floating roof tank that stores crude oil about a kind of, relates in particular to the easily heating arrangement of solidifying highly viscous crude of a kind of large-scale floating roof tank normal temperature storage.
Background technology
Since 1993 became net import of oil state, the demand of China's oil constantly increased, the import volume cumulative year after year, and externally interdependency is also improving constantly.Strategic oil reserve has also become the most important link of national energy security system.From most oil producing countries are different in the world, the crude oil that China produces mostly is greatly easily solidifying highly viscous crude, its high solidifying high sticking characteristic so that crude oil flowing power is relatively poor even present solid-state at normal temperatures.In order to guarantee flowing power, in storage process, need to pay quite high economic cost.
Along with the progressively foundation of oil conservation system, the storing mode problem of oil tank becomes increasingly conspicuous.For easy solidifying highly viscous crude, its high solidifying high sticking characteristic so that in storage process oil product need to keep higher temperature.If adopt conventional bottom steam coil pipe and hot oiling type of heating, need to consume a large amount of fuel, energy charge is quite serious, and runs in the opposite direction with the energy-saving and emission-reduction policy of country.If but oil tank were not carried out intermittent-heating, the crude oil in the tank could solidify when temperature is lower than condensation point gradually, solidifying oil reservoir occurs.When resuming operation, oil tank needs again to add outside the solidifying ability of pyrolysis defeated to crude oil.Yet in a single day condensing appears in the inner crude oil of oil tank, and the phenomenon that crude oil can't be extracted out might appear in more popular hot oiling type of heating if adopt at present.If adopt the bottom-heated coil pipe that oil tank is heated, can be because the crude oil of oil tank inside het expansion occurs and causes tank skin to bear extra additional stress.Simultaneously, because the intensity of the solidifying oil reservoir of tank top different directions and thickness distribution are uneven, heating also might cause the discontinuity of floating roof to tank bottom, produces serious potential safety hazard.
Therefore, need the heating problems of oil tank under the research normal temperature oil storage condition, propose safe and reliable, economically viable normal temperature oil storage method, for the safety and economic operation of oil tank provides the failure-free technical guarantee.
At present, the normal temperature storage of crude oil with high solidifying point has been carried out applied research both at home and abroad.For large oil tank, the domestic floating roof tank spatial structure heating arrangement that has proposed to be applicable to the long-term normal temperature of crude oil with high solidifying point or storage at lower temperature.Its design concept is crude oil not to be heated between the storage life, only starts heating before the outside hair oil of needs, realizes that the efficient energy-saving of crude oil stores.But because its device more complicated, the reliability of this achievement is still waiting to do further checking by field experiment.Solid-state storage has proposed the top heating technique for crude oil with high solidifying point in Japan, different with the bottom-heated of domestic routine, the heating coil of top heating arrangement hangs on the floating roof below, when oil tank resumes operation, from oil tank top crude oil is heated, can realize limit heating edge hair oil.But there is the following problem in the prior art in the practice process: the first, and the external transport pipeline of oil tank adopts folded pipeline to be arranged in outside the tank, arranges downwards at tank outer tank skin upwards cross the highest point of tank skin from floating roof after.It is normal outer defeated that crude oil is failed the discrepancy in elevation ability that at first will overcome oil product position and tank skin highest point in the process outside, and the interior liquid level of tank is lower, and the discrepancy in elevation that oil product need to overcome when failing outside is larger, and energy charge is serious.Second, need to overcome the certain discrepancy in elevation because oil product is defeated outward, output pump must be installed on the floating roof top, the vibration that produces in the deadweight of output pump and the operational process will reduce the safety performance of floating roof, in addition, the existence of electric signal will bring huge disaster hidden-trouble in operational process, be a huge test to the safe operation of whole heating arrangement.The 3rd, the layout of steam turnover pipeline does not suit on-the-spot actual, and steam needs to overcome the discrepancy in elevation in discharge process discharges from the oil tank top, and this design is unfavorable for the discharge of the condensed water that produces in the heat process.Therefore, existing top heating technique still can run into some difficult problems in application process, need to improve.
Along with the development of national economy, petroleum strategic reserves is being played the part of more and more important role at the energy security of country, and reducing to greatest extent the storage life energy consumption is the key that reduces storage cost.Thus, the inventor relies on experience and the practice of being engaged in for many years relevant industries, proposes the easily heating arrangement of solidifying highly viscous crude of a kind of large-scale floating roof tank normal temperature storage, to overcome the defective of prior art.
The utility model content
The purpose of this utility model is to provide the easily heating arrangement of solidifying highly viscous crude of a kind of large-scale floating roof tank normal temperature storage, to be applicable to long-term economic, the easy solidifying highly viscous crude of normal temperature storage safely.
The purpose of this utility model is to realize like this, a kind of large-scale floating roof tank normal temperature storage is the heating arrangement of solidifying highly viscous crude easily, described large-scale floating roof tank includes tank body and floating roof, and the tank skin top of tank body is provided with the tank operation platform, is provided with the oil tank staircase between tank operation platform and the floating roof; Described heating arrangement comprises the overhead vapor coil pipe group that is arranged on the floating roof below, the top of steam coils group is connected with steam hose by a steam diverter, the part of steam hose is fixedly installed on the oil tank staircase, and steam hose is crossed tank skin top and the steam admission passage conducting that is arranged on tank wall; The terminal of described steam coils group is communicated with by the catch pit that a condensed water discharge pipe and is arranged on floating roof downside central part; This catch pit bottom is provided with one and extends downward tank base and conducting in the central drain of tank body outside; Described heating arrangement also comprises the oil transferring pipeline that is made of folded tube, and this oil transferring pipeline upper end mouth of pipe is fixedly installed on the floating roof below, and the oil transferring pipeline lower end mouth of pipe is to tank base extension and outside in tank body by the tank base conducting.
In a preferred embodiments of the present utility model, the described a part of steam hose that is fixedly installed on the oil tank staircase is substituted by the steam steel pipe.
In a preferred embodiments of the present utility model, described steam admission passage upwards passes to tank operation platform below by tank base along tank skin.
In a preferred embodiments of the present utility model, described steam diverter is fixed on the floating roof; This steam diverter is provided with a steam inlet and a plurality of steam (vapor) outlet.
In a preferred embodiments of the present utility model, described central drain is made of flexible pipe.
In a preferred embodiments of the present utility model, described steam coils group is made of a plurality of with one heart sheathed ring pipes in the same plane; Spacing is identical between each ring pipe.
In a preferred embodiments of the present utility model, be provided with a plurality of elbows in the described oil transferring pipeline, the pipeline of each elbow both sides can bend with respect to elbow or be folding.
From the above mentioned, heating arrangement of the present utility model is applicable to long-term economic, normal temperature storage is easily coagulated highly viscous crude safely; The oil transferring pipeline adopts the folded tube design, is arranged in oil tank inside, and the oil transferring pipeline lower end mouth of pipe is to tank base extension and outside in tank body by the tank base conducting; Crude oil does not need to overcome the vertex that the discrepancy in elevation is crossed tank skin in the defeated process outside, has saved large energy; Simultaneously, fuel transfer pump does not need to be installed on the floating roof, has improved the stability of floating roof in the oil tank operation, and does not have electric signal in the oil tank in heat process, and safety performance is improved.Special condensed water is not set with the closed tube road in the tank body, the condensed water that produces in the heat process is directly outside central drain drains into tank; Do like this pipeline quantity that has reduced to a certain extent in the tank, reduced the complexity of whole heating arrangement.
Description of drawings
The following drawings only is intended to the utility model done and schematically illustrates and explain, does not limit scope of the present utility model.Wherein:
Fig. 1: the structural representation that easily coagulates the heating arrangement of highly viscous crude for the large-scale floating roof tank normal temperature storage of the utility model.
Fig. 2: be the structural representation of heating arrangement piping layout in the utility model.
Fig. 3: be the structural representation of steam diverter in the utility model.
Fig. 4: be the elbow structure scheme drawing of oil transferring pipeline in the utility model.
Fig. 5: be the structural representation of steam coils group in the utility model.
Fig. 6: be the hanger structure scheme drawing of fixed steam coil pipe in the utility model.
The drawing reference numeral explanation:
The 11-tank body;
The 12-floating roof;
13-tank operation platform;
14-oil tank staircase;
2-overhead vapor coil pipe group;
The 21-ring pipe;
The 3-steam diverter;
The 31-steam inlet;
The 32-steam (vapor) outlet;
The 4-steam hose;
41-steam steel pipe;
5-steam admission passage;
The 6-condensed water discharge pipe;
The 7-catch pit;
The 71-central drain;
8-oil transferring pipeline;
The 81-elbow;
The 9-suspension bracket;
91-suspension bracket main body
92-suspension bracket fixing feet;
The 93-coil pipe fixing part;
The specific embodiment
Understand for technical characterictic of the present utility model, purpose and effect being had more clearly, now contrast the description of drawings specific embodiment of the present utility model.
As shown in Figure 1 and Figure 2, the utility model proposes the easily heating arrangement 100 of solidifying highly viscous crude of a kind of large-scale floating roof tank normal temperature storage, described large-scale floating roof tank includes tank body 11 and floating roof 12, the tank skin top of tank body 11 is provided with tank operation platform 13, is provided with oil tank staircase 14 between tank operation platform 13 and the floating roof 12; Described heating arrangement 100 comprises the overhead vapor coil pipe group 2 that is arranged on floating roof 12 belows, and described steam coils group 2 is made of a plurality of with one heart sheathed ring pipes 21 in the same plane; Concrete ring pipe 21 quantity can be adjusted according to the difference of heating condition, and spacing is equal to substantially between each ring pipe 21, so that homogeneous heating; The top of steam coils group 2 is connected with steam hose 4 by a steam diverter 3 (as shown in Figure 3), and described steam diverter 3 is fixed on the floating roof 12; This steam diverter 3 is provided with a steam inlet 31 that is connected with steam hose 4 and a plurality of steam (vapor) outlet 32 that is connected respectively with steam coils group top, one road steam of input can be divided into some roads; The part of steam hose 4 is fixedly installed on the oil tank staircase 14, in the present embodiment, the described a part of steam hose 4 that is fixedly installed on the oil tank staircase 14 can be substituted by one section steam steel pipe 41, steam hose 4 is crossed tank skin top and steam admission passage 5 conductings that are arranged on tank wall, and described steam admission passage 5 upwards passes to tank operation platform 13 belows by tank body 11 bottoms along tank skin; The terminal of described steam coils group 2 is communicated with a catch pit 7 that is arranged on floating roof downside central part by a condensed water discharge pipe 6 (as shown in Figure 5); These catch pit 7 bottoms are provided with one and extend downward tank body 11 bottoms and conducting in the central drain 71 of tank body 11 outsides, and described central drain 71 is made of flexible pipe, causes potential safety hazard thereby prevent from arranging too much folding pipeline in tank; Described heating arrangement also comprises the oil transferring pipeline 8 that is made of folded tube, is provided with a plurality of elbows 81 (as shown in Figure 4, two elbows being set among Fig. 2) in the described oil transferring pipeline 8, and the pipeline of each elbow 81 both sides can bend with respect to elbow or be folding; These oil transferring pipeline 8 upper end mouths of pipe are fixedly installed under the crude oil liquid level of floating roof 12 belows, and the oil transferring pipeline 8 lower end mouths of pipe extend to tank body 11 bottoms and be outside in tank body by tank body 11 bottom conductings.
This heating arrangement at first passes into steam in when work in steam admission pipe 5, steam is divided into some roads steam after entering steam diverter 3 by steam steel pipe 41 and steam hose 4, and the coil pipe pipeline that enters respectively separately heats the crude oil of floating roof 12 belows.The condensed water that heat process produces drains into catch pit 7 by condensed water discharge pipe 6, drains into the oil tank outside by central drain 71.When there was the liquid crude oil of certain altitude in oil tank floating roof 12 belows, the valve of unlatching oil transferring pipeline 8 was delivered to the liquid crude oil of floating roof 12 belows outside the tank by oil transferring pipeline 8.Along with the decline of liquid level in the tank, floating roof 12 also descends together with overhead vapor coil pipe group 2 thereupon, continues floating roof 12 below crude oil are heated, thereby liquid crude oil is delivered to the oil tank outside continually.Since this heating arrangement in heat process in the tank expanding volume of crude oil can release timely to floating roof 12, can in tank, not produce and build the pressure.Therefore even the crude oil in the tank is at the heating initial stage and solid-stately also can separates safely solidifying and operation, thereby so that in the oil tank crude oil within the storage life, can not heat.If the ability of heating system meets the demands, heating coil group connection and reasonable arrangement can realize the outside conveying crude oil of limit heating edge in heat process.Therefore, this heating arrangement is suitable for easily solidifying highly viscous crude of at normal temperatures long term storage.
Further, as shown in Figure 1 and Figure 2, the heating coil group 2 of top heating arrangement need to be suspended on floating roof 12 belows, and in heat process, along with moving up and down of floating roof 12, corresponding change in location can occur along with the action of staircase 14 whole heating pipe line; The factors such as vibrations that produce when considering the heating of the deadweight of coil pipe and coil pipe adopt 9 pairs of steam coils groups 2 of suspension bracket to be fixed; As shown in Figure 6, described suspension bracket 9 is comprised of suspension bracket main body 91, suspension bracket fixing feet 92 and coil pipe fixing part 93; Be fixed in oil tank floating roof 12 bottoms by suspension bracket fixing feet 92, the deadweight of carrying coil pipe is by suspension bracket main body 91 and each ring pipe 21 of coil pipe fixing part 93 fixed clamp.
In the present embodiment, described steam hose 4 adopts corrugated flexible hose.
Owing to adopted the utility model heating arrangement, can so that large floating roof oil tank is realized easily solidifying highly viscous crude of normal temperature storage, change traditional crude oil storing mode.Oil tank adopts this heating arrangement, and on the one hand, crude oil is through long-term normal temperature storage process in the tank, and the oil storage cost reduces greatly, has preferably economic benefit.On the other hand, when resuming operation, the cubic expansion amount of heating crude oil process because this heating arrangement can in time be released, floating roof is stressed steadily, and tank skin can not bear extra additional stress, heat process safety.Therefore, this heating arrangement has solved technical matters and the economic problems of easily solidifying highly viscous crude normal temperature storage.Utilize this heating arrangement, it is both energy-conservation, safe and reliable again to realize that floater stores easily solidifying highly viscous crude.
In addition, the utility model compared with prior art also has following advantage:
1. want in the heating arrangement of the present utility model, the oil transferring pipeline adopts the folded tube design, is arranged in oil tank inside, and the oil transferring pipeline lower end mouth of pipe is to tank base extension and outside in tank body by the tank base conducting; Crude oil does not need to overcome the vertex that the discrepancy in elevation is crossed tank skin in the defeated process outside, has saved large energy; Simultaneously, fuel transfer pump does not need to be installed on the floating roof, has improved floating roof and has wanted stability in the oil tank operation, and do not have electric signal in the oil tank in heat process, and safety performance is improved.
2. special condensed water is not set with the closed tube road in the tank body, the condensed water that produces in the heat process is directly outside central drain drains into tank; Do like this pipeline quantity that has reduced to a certain extent in the tank, reduced the complexity of whole heating arrangement; Simultaneously, the steam after the use still has higher temperature, can heat near the crude oil central drain, alleviate central drain because of around exist solidifying oily produce can't regular event phenomenon.
3. be to realize folding with elbow in the steam turnover pipeline, but elbow easily leakage under high pressure-temperature substitute elbow with steam hose in the utility model, has improved the safety of whole device in the prior art.Simultaneously, high-pressure telescopic pipeline difficulty technically is so that steam hose is more applicable for the scene.
4. the steam admission pipe is arranged along staircase at the floating roof upper section, and along with moving up and down of floating roof, the change of staircase relative position can drive the change of steam admission pipe position.
5. in the crude oil storage cycle, do not need crude oil is heated, when oil tank resumes operation, can realize limit heating edge conveying, greatly reduce storing and operating cost.
The above only is the schematic specific embodiment of the utility model, is not to limit scope of the present utility model.Any those skilled in the art, the equivalent variations of having done under the prerequisite that does not break away from design of the present utility model and principle and modification all should belong to the scope that the utility model is protected.
Claims (7)
1. the easy heating arrangement of solidifying highly viscous crude of one kind large-scale floating roof tank normal temperature storage, described large-scale floating roof tank includes tank body and floating roof, and the tank skin top of tank body is provided with the tank operation platform, is provided with the oil tank staircase between tank operation platform and the floating roof; It is characterized in that: described heating arrangement comprises the overhead vapor coil pipe group that is arranged on the floating roof below, the top of steam coils group is connected with steam hose by a steam diverter, the part of steam hose is fixedly installed on the oil tank staircase, and steam hose is crossed tank skin top and the steam admission passage conducting that is arranged on tank wall; The terminal of described steam coils group is communicated with by the catch pit that a condensed water discharge pipe and is arranged on floating roof downside central part; This catch pit bottom is provided with one and extends downward tank base and conducting in the central drain of tank body outside; Described heating arrangement also comprises the oil transferring pipeline that is made of folded tube, and this oil transferring pipeline upper end mouth of pipe is fixedly installed on the floating roof below, and the oil transferring pipeline lower end mouth of pipe is to tank base extension and outside in tank body by the tank base conducting.
2. large-scale floating roof tank normal temperature storage as claimed in claim 1 is easily coagulated the heating arrangement of highly viscous crude, it is characterized in that: the described a part of steam hose that is fixedly installed on the oil tank staircase is substituted by the steam steel pipe.
3. large-scale floating roof tank normal temperature storage as claimed in claim 1 is easily coagulated the heating arrangement of highly viscous crude, it is characterized in that: described steam admission passage upwards passes to tank operation platform below by tank base along tank skin.
4. large-scale floating roof tank normal temperature storage as claimed in claim 1 is easily coagulated the heating arrangement of highly viscous crude, and it is characterized in that: described steam diverter is fixed on the floating roof; This steam diverter is provided with a steam inlet and a plurality of steam (vapor) outlet.
5. large-scale floating roof tank normal temperature storage as claimed in claim 1 is easily coagulated the heating arrangement of highly viscous crude, and it is characterized in that: described central drain is made of flexible pipe.
6. large-scale floating roof tank normal temperature storage as claimed in claim 1 is easily coagulated the heating arrangement of highly viscous crude, it is characterized in that: described steam coils group is made of a plurality of with one heart sheathed ring pipes in the same plane; Spacing is identical between each ring pipe.
7. large-scale floating roof tank normal temperature storage as claimed in claim 1 is easily coagulated the heating arrangement of highly viscous crude, it is characterized in that: be provided with a plurality of elbows in the described oil transferring pipeline, the pipeline of each elbow both sides can bend with respect to elbow or be folding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220403049 CN202687187U (en) | 2012-08-14 | 2012-08-14 | Heating unit of large floating roof tank storing easy-coagulating and highly viscous crude oil at normal temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220403049 CN202687187U (en) | 2012-08-14 | 2012-08-14 | Heating unit of large floating roof tank storing easy-coagulating and highly viscous crude oil at normal temperature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202687187U true CN202687187U (en) | 2013-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220403049 Expired - Fee Related CN202687187U (en) | 2012-08-14 | 2012-08-14 | Heating unit of large floating roof tank storing easy-coagulating and highly viscous crude oil at normal temperature |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202687187U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102815475A (en) * | 2012-08-14 | 2012-12-12 | 中国石油大学(北京) | Heating device for low-pour-point and high-viscosity oil stored at room temperature in large-size floating roof tank |
-
2012
- 2012-08-14 CN CN 201220403049 patent/CN202687187U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102815475A (en) * | 2012-08-14 | 2012-12-12 | 中国石油大学(北京) | Heating device for low-pour-point and high-viscosity oil stored at room temperature in large-size floating roof tank |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130123 Termination date: 20140814 |
|
| EXPY | Termination of patent right or utility model |