CN214681425U - High-efficient mediation system of oil refinery petrol - Google Patents
High-efficient mediation system of oil refinery petrol Download PDFInfo
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- CN214681425U CN214681425U CN202120520497.5U CN202120520497U CN214681425U CN 214681425 U CN214681425 U CN 214681425U CN 202120520497 U CN202120520497 U CN 202120520497U CN 214681425 U CN214681425 U CN 214681425U
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Abstract
The utility model discloses a high-efficient blending system of oil refinery petrol, including each component oil apparatus for producing, each component oil pans and finished gasoline tank, the oil pipeline that each component oil apparatus for producing is connected divide into two the tunnel, all the way with the component oil pans intercommunication that corresponds, another way and finished gasoline tank intercommunication, each component oil pans passes through pipeline and finished gasoline tank intercommunication. By adopting the blending system of the utility model to blend gasoline, the component oil from the component oil production device can not enter or less enter the component oil intermediate tank, and can be directly blended into the finished gasoline in the pipeline before entering the finished gasoline tank, thereby shortening the blending process and reducing the blending time of the finished gasoline; when the blended finished gasoline grade needs to be replaced, only the process needs to be modified and the pump needs to be started or stopped for 2-4 times, so that the operation times of blending gasoline are reduced, and the labor intensity of workers is reduced.
Description
Technical Field
The utility model belongs to the technical field of the petrol mediation, in particular to high-efficient mediation system of oil refinery petrol.
Background
Gasoline blending is a key component of refinery storage and transportation management systems. Gasoline products are classified into 2 major categories (ethanol gasoline and clean gasoline) and 6 brands (92 # ethanol gasoline, 95# ethanol gasoline, 98# ethanol gasoline, 92# clean gasoline, 95# clean gasoline and 98# clean gasoline) according to national standards.
The product oils with different grades have very definite quality index requirements, and the component oil from the production device can not completely meet the quality index requirements of a certain product oil. In most cases, some of the quality indexes of part of the product oil do not meet the requirements, and other product oil quality indexes have surplus. According to the quality index requirements of the finished oil, proper component oils extracted from different production devices are selected and mixed according to a certain proportion, so that the blended finished oil meets the quality index requirements of certain finished oil, and the process is called oil blending.
The finished gasoline is prepared by blending various component oils such as S Zorb refined gasoline (catalytic gasoline), reformed gasoline, naphtha (ethylene raw material), mixed aromatics, MTBE, alkylate oil and the like produced by an oil refinery, and each component oil is conveyed to a component oil tank area from a respective production device and is stored respectively. Each component oil has at least more than 2 storage tanks, one storage tank receiving device is used for component oil, and one storage tank is used for sending the component oil to blend the finished product gasoline.
The component oil for producing the finished gasoline with the same grade can be combined in a plurality of proportions, and a list of the proportion combination of the component oil in part of the finished gasoline is attached.
Attached watch 1
Oil refinery gasoline blending conventional process: when finished gasoline is blended, according to the brand of a gasoline product, the component oil with the required weight is respectively pumped out of each component tank according to the proportion of each component oil, and is sequentially conveyed to a gasoline finished oil intermediate tank by a blending pump (circulating pump). After the test is qualified, the gasoline product is sold. Since the finished gasoline is blended by a storage tank, the process is commonly referred to as "tank blending". As shown in fig. 1.
The conventional gasoline blending method has the following major problems:
(1) the time required to blend a can of finished gasoline is long.
The oil refinery is provided with a mixing pump (also used as a circulating pump) with the discharge capacity of about 200 m 3In the blending process, the component oil enters a gasoline finished product oil intermediate tank in proportion,
to harmonize 4000m 3Finished gasoline (98 # clean gasoline) is taken as an example, and 400 m of reformed gasoline is required according to the component oil proportion of the attached table I 3Delivered for about 2 hours; s Zorb refined gasoline (catalytic gasoline) 2040 m 3Conveying for about 10 hours; MTBE 480 m 3Delivered for about 2.4 hours; alkylate 560 m 3Delivered for about 2.8 hours; mixed aromatic hydrocarbon 520 m 3And delivered for about 2.6 hours.
Conveying the oil components into a gasoline finished product oil intermediate tank for about 20 hours; changing each component oil requires modifying the flow, starting and stopping the mixing pump, and counting according to the operation time of 10 hours; for uniform mixing, 4000m 3Circulating for about 20 hours; the oil refinery can run for three shifts for 8 hours, the operation frequency is reduced when the oil refinery actually shifts to work or shifts at night, and the operation is not performed for about 10 hours. Blend 4000m 3The finished gasoline (98 # clean gasoline) required at least 60 hours, about 3 days.
(2) The blending of one tank of finished gasoline requires many operation times and the labor intensity of workers is high.
The blending of one tank of finished gasoline requires the operator to change the flow on site and frequently start and stop the pump due to the delivery of each component oil and the circulation of intermediate finished products, and taking the blending of 98# clean gasoline as an example, the flow of each component oil and the circulation of the gasoline is changed for 1 time, the pump is started and stopped for 1 time, and the operation frequency is at least more than 12 times.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the defect among the above-mentioned prior art, provide a high-efficient mediation method of oil refinery petrol, reduced finished product petrol mediation time, reduced mediation petrol number of operations times, reduced workman intensity of labour.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model discloses the blending system does not advance or advance component oil intermediate tank less with the component oil of each apparatus for producing, shortens the mediation flow, directly blends into product gasoline in the pipeline before getting into the finished gasoline tank.
Due to the continuous development of the technology and the continuous expansion of the yield, the construction time and the purpose of each device of the oil refinery are different, the distance from each component oil production device to a finished gasoline tank area is different, the pressure (about 0.3-0.4 MPa) of the outlet of each component oil production device and the outlet of each component oil intermediate tank is adjusted, and the component oils are smoothly mixed into the finished gasoline tank for direct blending without robbing and jacking.
And (3) transforming the flow of each component oil in the tank field, wherein each component oil pipeline is divided into three paths before the mixer: one route is from each component oil production device, one route is from each component oil intermediate tank, and the other route returns the component oil intermediate tank. Considering that the proportion of the component oil produced by each production device does not necessarily accord with the proportion of a certain grade of product gasoline, when the proportion of the component oil is exceeded by the production device, part of the component oil returns to the component oil intermediate tank; when the proportion of the component oil is insufficient by the production device, the component oil is supplemented by the component oil intermediate tank.
The pipeline for each component oil to enter the finished gasoline tank is provided with a flowmeter and a flow regulating valve to control the instantaneous flow and the final total weight of each component oil entering the finished gasoline tank. When the pressure exceeds a certain value (about 0.45 MPa) by pressure measurement, the amount of the component oil is higher than the required flow, the pressure regulating valve is opened, and the redundant component oil returns to the component oil intermediate tank.
After the oil pipelines of all the components are converged, a static mixer is arranged before the oil pipelines enter a finished gasoline tank, and all the component oil is fully and uniformly mixed before entering the finished gasoline tank. The finished gasoline is blended into the finished gasoline without circulation, namely the gasoline is blended before entering the finished gasoline tank.
The beneficial effects of the utility model reside in that: by adopting the blending system of the utility model to blend gasoline, the component oil from the component oil production device can not enter or less enter the component oil intermediate tank, and can be directly blended into the finished gasoline in the pipeline before entering the finished gasoline tank, thereby shortening the blending process and reducing the blending time of the finished gasoline; when the blended finished gasoline grade needs to be replaced, only the process needs to be modified and the pump needs to be started or stopped for 2-4 times, so that the operation times of blending gasoline are reduced, and the labor intensity of workers is reduced.
Drawings
FIG. 1 is a block diagram of a prior art gasoline blending system configuration;
FIG. 2 is a block diagram of a gasoline blending system according to the present invention;
FIG. 3 is a gasoline blending flow chart of the gasoline blending system of the present invention;
wherein: 1. A component oil production device; 2. a component oil intermediate tank; 3. a finished gasoline tank; 4. a static mixer; 5. a mixer; 6. a flow regulating valve; 7. a pressure regulating valve.
Detailed Description
The following examples further illustrate the embodiments of the present invention in detail. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
As shown in fig. 2-3, an efficient gasoline blending system for an oil refinery comprises each component oil production device 1, each component oil intermediate tank 2 and a finished gasoline tank 3, wherein an oil pipeline connected with each component oil production device 1 is divided into two paths, one path is communicated with the corresponding component oil intermediate tank 2, the other path is communicated with the finished gasoline tank 3, and each component oil intermediate tank 2 is communicated with the finished gasoline tank 3 through a pipeline.
As one of the examples, the component oil production apparatus includes an S Zorb gasoline production apparatus, a reformed gasoline production apparatus, an alkylate oil production apparatus, an MTBE production apparatus, a mixed aromatics production apparatus, and a naphtha production apparatus, and the component oil intermediate tank includes an S Zorb gasoline tank, a reformed gasoline tank, an alkylate oil tank, an MTBE tank, a mixed aromatics tank, and a naphtha tank. One path of an oil pipeline of the S Zorb gasoline production device is connected with the S Zorb gasoline tank, and the other path is connected with the finished product gasoline tank 3; one path of an oil pipeline of the reformed gasoline production device is connected with the reformed gasoline tank, and the other path is connected with the finished product gasoline tank 3; one path of an oil pipeline of the alkylate oil production device is connected with an alkylate oil tank, and the other path is connected with a finished gasoline tank 3; one path of an oil pipeline of the MTBE production device is connected with the MTBE tank, and the other path of the oil pipeline is connected with the finished gasoline tank 3; one path of an oil pipeline of the mixed aromatic hydrocarbon production device is connected with the mixed aromatic hydrocarbon tank, and the other path is connected with the finished gasoline tank 3; one way of the oil pipeline of the naphtha production device is connected with the naphtha tank, and the other way is connected with the finished gasoline tank 3.
Further, each component oil is provided with two component oil intermediate tanks 2, one of which is communicated with the corresponding component oil production device 1 through a pipeline, the other of which is communicated with the product gasoline tank 3 through a pipeline, and the two component oil intermediate tanks 2 are communicated with each other through a pipeline.
Further, pressure gauges are installed at the outlet of each component oil production apparatus 1 and the outlet of each component oil intermediate tank 2, and the pressure gauges are electrically connected to pressure regulating valves that regulate the pressures at the outlet of each component oil production apparatus 1 and the outlet of each component oil intermediate tank 2. The pressure of the outlet of each component oil production device 1 and the outlet of each component oil intermediate tank 2 are both ensured to be 0.3-0.4Mpa, and each component oil is not robbed and pushed against the cattle, and is smoothly mixed into a finished gasoline tank 3 for direct blending.
Furthermore, a flow meter is arranged on a pipeline before each component oil flows into the finished gasoline tank 3, the flow meter is electrically connected with the flow regulating valve 6, and the flow regulating valve 6 regulates the instantaneous flow and the final total mass of each component oil. The pipes through which the component oils flow into the corresponding component oil intermediate tanks 2 are provided with pressure gauges which are electrically connected with the pressure regulating valves 7, and the pressure regulating valves 7 regulate the flow rate and the flow direction of the component oils to be introduced into the finished gasoline tanks 3 through pressure measurement.
One of the component oils (e.g., S Zorb gasoline) is selected as the base component oil, and the other component oils are adjusted according to the proportions of the gasoline blending components in the product gasoline. When the ratio of each component oil flowing out from the distillation outlet of each component oil production device 1 exceeds the product gasoline of the brand, the part of each component oil flows into each component oil intermediate tank 2; when the ratio of each component oil flowing out of the distillation outlet of each component oil production device 1 does not reach the ratio of the product gasoline, each component oil flows out of each component oil intermediate tank 2 and is supplemented to a product gasoline tank 3.
The pressure needs to be controlled between 0.4 and 0.45MPa in the gasoline blending process. When the pressure exceeds 0.45MPa, which indicates that the flow of the component oil is higher than the required flow, the opening of the pressure regulating valve 7 needs to be increased, so that part of the component oil flows back to the component oil intermediate tank 2; when the pressure is less than 0.4MPa, the opening degree of the pressure regulating valve 7 needs to be reduced, so that the component oil flows out of the component oil intermediate tank 2 and is supplemented to the finished gasoline tank 3.
Furthermore, the oil pipelines connected with the finished gasoline tank 3 are merged into a total oil pipeline before entering the finished gasoline tank, the static mixer 4 is arranged on the total oil pipeline, and the component oils are uniformly mixed in the total oil pipeline and then flow into the finished gasoline tank 3.
Furthermore, a mixer 5 is arranged in the finished gasoline tank 3, so that the component oils are fully mixed again, and the finished gasoline is blended into the finished gasoline without recirculation.
The following table shows a blending table for blending 98# clean gasoline by using the blending system of the utility model.
Blending 4000m3 98# clean gasoline, 400 m of reformed gasoline is needed3S Zorb gasoline 2040 m3、MTBE 480 m3Alkylated oil 560 m3520 m of mixed aromatic hydrocarbon3. Each component oil directly enters a finished gasoline tank 3 from each component oil production device 1 and is directly blended into finished gasoline in a pipeline, the flow rate of the finished gasoline is equal to that of each component oil sent out by each component oil production device 1 and sent out by each component oil pumpThe discharge capacity superposition shortens the blending process, omits partial secondary conveying, reduces the blending time of the finished gasoline, and omits the links of gasoline circulation and the like. When the blended finished gasoline grade needs to be replaced, only the manual modification process needs to be operated, and the pump is started and stopped for 2-4 times, so that the operation times of blended gasoline are reduced, and the labor intensity of workers is reduced.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.
Claims (8)
1. The utility model provides an efficient blending system of oil refinery gasoline, includes each component oil apparatus for producing (1), each component oil intermediate tank (2) and finished product gasoline tank (3), its characterized in that: the oil delivery pipeline connected with each component oil production device (1) is divided into two paths, one path is communicated with the corresponding component oil intermediate tank (2), the other path is communicated with the finished gasoline tank (3), and each component oil intermediate tank (2) is communicated with the finished gasoline tank (3) through a pipeline.
2. The efficient blending system for gasoline in oil refinery of claim 1, characterized in that: a flow meter is arranged on a pipeline before each component oil flows into the finished gasoline tank (3), the flow meter is electrically connected with a flow regulating valve (6), and the flow regulating valve (6) regulates the instantaneous flow and the final total mass of each component oil;
and a pressure gauge is arranged on a pipeline of each component oil flowing into the corresponding component oil intermediate tank (2), the pressure gauge is electrically connected with a pressure regulating valve (7), and the flow rate and the flow direction of each component oil to be fed into the finished gasoline tank (3) are regulated by the pressure regulating valve (7).
3. The efficient blending system for gasoline in oil refinery of claim 1, characterized in that: the oil pipelines connected with the finished gasoline tank (3) are converged into a total oil pipeline before entering the finished gasoline tank (3), and the total oil pipeline is provided with a static mixer (4).
4. The efficient blending system for gasoline in oil refinery of claim 1, characterized in that: a mixer (5) is arranged in the finished gasoline tank (3).
5. The efficient blending system for gasoline in oil refinery of claim 1, characterized in that: each component oil is provided with two component oil intermediate tanks (2), one component oil intermediate tank is communicated with a corresponding component oil production device (1) through a pipeline, the other component oil intermediate tank is communicated with a finished gasoline tank (3) through a pipeline, and the two component oil intermediate tanks (2) are communicated through a pipeline.
6. The efficient blending system for gasoline in oil refinery of claim 1, characterized in that: pressure gauges are arranged at the outlets of the component oil production devices (1) and the outlets of the component oil intermediate tanks (2), the pressure gauges are electrically connected with pressure regulating valves, and the pressure regulating valves regulate the pressure at the outlets of the component oil production devices (1) and the outlets of the component oil intermediate tanks (2).
7. The efficient blending system for gasoline in oil refinery of claim 1, characterized in that: the component oil production device (1) comprises an S Zorb gasoline production device, a reformed gasoline production device, an alkylate oil production device, an MTBE production device and a mixed aromatic hydrocarbon production device, and the component oil intermediate tank (2) comprises an S Zorb gasoline tank, a reformed gasoline tank, an alkylate oil tank, an MTBE tank and a mixed aromatic hydrocarbon tank.
8. The efficient blending system for gasoline in oil refinery of claim 7, wherein: the component oil production device (1) further comprises a naphtha production device, and the component oil intermediate tank (2) further comprises a naphtha tank.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120520497.5U CN214681425U (en) | 2021-03-12 | 2021-03-12 | High-efficient mediation system of oil refinery petrol |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120520497.5U CN214681425U (en) | 2021-03-12 | 2021-03-12 | High-efficient mediation system of oil refinery petrol |
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| Publication Number | Publication Date |
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| CN214681425U true CN214681425U (en) | 2021-11-12 |
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| CN202120520497.5U Active CN214681425U (en) | 2021-03-12 | 2021-03-12 | High-efficient mediation system of oil refinery petrol |
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- 2021-03-12 CN CN202120520497.5U patent/CN214681425U/en active Active
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