CN212610448U - Device for producing gasoline by crude oil two-stage hydrogenation - Google Patents
Device for producing gasoline by crude oil two-stage hydrogenation Download PDFInfo
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- CN212610448U CN212610448U CN202021272437.8U CN202021272437U CN212610448U CN 212610448 U CN212610448 U CN 212610448U CN 202021272437 U CN202021272437 U CN 202021272437U CN 212610448 U CN212610448 U CN 212610448U
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Abstract
The utility model relates to a device of crude oil two-stage hydrogenation production petrol, its characterized in that: the crude oil distillation tower discharging pipe and the additive inlet pipe that the crude oil distillation tower bottom set up, new hydrogen admission manifold and be connected to first order reactor through force (forcing) pump and first pre-heater, the top of first order reactor is connected to the separator, the bottom of separator is provided with the residual oil export, the separator top is connected to second order reactor top, second order reactor bottom is connected to cold separator through first cooler, cold separator is connected to the fractionating tower, the top of fractionating tower is connected to the petrol collection tank through the second cooler, the bottom of fractionating tower is provided with the clout recovery tube. The utility model has the advantages of being scientific and reasonable in structural design, simple process, petrol production efficiency is high, and the energy consumption is with low costs, and crude oil can high-efficient thorough separation.
Description
Technical Field
The utility model belongs to the technical field of crude oil hydrogenation, a device of crude oil hydrogenation production petrol is related to, in particular to device of crude oil two-stage hydrogenation production petrol.
Background
The existing crude oil processing technology, especially in the aspect of processing heavy oil with high boiling point, generally adopts a hydrogenation method, firstly hydrogenation reaction is carried out in a suspension bed reactor, then a reaction product is distilled, a product with low boiling point is extracted, heavy components are recycled to the reactor for continuous reaction, the process is circulated all the time until the heavy oil with high boiling point is fully converted into light middle distillate oil to be distilled out; in the light product distilled out, secondary hydrofining and hydrocracking are required to produce qualified gasoline and diesel, and the secondary hydrogenation reaction generally adopts a fixed bed reactor mode.
Attempts have been made to obtain light oil products with low boiling points by one-step hydrogenation in a fixed bed reactor, but a number of examples reveal the fact that the catalyst activity decreases more rapidly. Catalyst life can only be guaranteed at lower pressures and catalyst activity is greatly attenuated with increasing feed carbon residue and heavy metals. It is only possible to ensure the catalyst activity with frequent replacement of the catalyst, which makes the operation of the hydrogenation unit very costly.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to prior art's defect and not enough, provide a device of crude oil two-stage hydrogenation production petrol, simple process, petrol production efficiency is high, and the energy consumption is with low costs.
The utility model provides a its technical problem realize through following technical scheme:
a device for producing gasoline by crude oil two-stage hydrogenation is characterized in that: the system comprises a crude oil distillation tower, a primary reactor, a separator, a secondary reactor, a cold separator, a fractionating tower and a gasoline collecting tank, wherein a crude oil distillation tower discharge pipe arranged at the bottom end of the crude oil distillation tower, an additive feeding pipe and a fresh hydrogen inlet pipe are converged and connected to the primary reactor through a pressure pump and a first preheater, the top end of the primary reactor is connected to the separator, a residual oil outlet is arranged at the bottom end of the separator, the top end of the separator is connected to the top end of the secondary reactor, the bottom end of the secondary reactor is connected to the cold separator through a first cooler, the cold separator is connected to the fractionating tower, the top end of the fractionating tower is connected to the gasoline collecting tank through a second cooler, and a residual material recycling pipe is arranged at the bottom end of the fractionating tower.
And a circulating hydrogen pipeline is arranged at the top end of the cold separator, and the circulating hydrogen pipeline is converged with a residual material recovery pipe, a gasoline and diesel oil fraction oil pipe arranged at the top end of the crude oil distillation tower and a fresh hydrogen supply pipe and is connected to the top end of the secondary reactor through a second preheater.
And the circulating hydrogen pipeline at the top end of the cold separator is combined with a crude oil distillation tower discharging pipe, an additive feeding pipe and a fresh hydrogen inlet pipe and is connected to the primary reactor through a first preheater.
The utility model discloses an advantage and beneficial effect do:
1. the utility model discloses device of crude oil two-stage hydrogenation production petrol, through the two-stage hydrogenation of first order reactor and second order reactor, can make crude oil turn into light oil from heavy oil, turns into petrol from light oil again, can carry out high-efficient thorough separation with crude oil, and petrol productivity is high.
2. The utility model discloses device of crude oil two-stage hydrogenation production petrol, process steps is simple, and the energy consumption is with low costs, and recoverable cyclic utilization of hydrogen circulation and partial intermediate product improves the conversion rate and the petrol productivity of crude oil.
3. The utility model has the advantages of scientific and reasonable design, simple process, gasoline production efficiency is high, and the energy consumption is with low costs, and crude oil can high-efficient thorough separation.
Drawings
Fig. 1 is a process flow diagram of the present invention.
Description of the reference numerals
The system comprises a 1-gasoline and diesel oil fraction oil pipe, a 2-crude oil distillation tower, a 3-crude oil distillation tower discharge pipe, a 4-additive feed pipe, a 5-pressure pump, a 6-fresh hydrogen inlet pipe, a 7-first preheater, an 8-first-stage reactor, a 9-separator, a 10-residual oil outlet, an 11-second preheater, a 12-second-stage reactor, a 13-first cooler, a 14-circulating hydrogen pipeline, a 15-cold separator, a 16-second cooler, a 17-fractionating tower, an 18-gasoline collecting tank, a 19-residual material recovery pipe and a 20-fresh hydrogen supply pipe.
Detailed Description
The present invention will be described in further detail with reference to specific examples, which are provided for illustrative purposes only, and are not intended to be limiting, and the scope of the present invention should not be limited thereby.
The device for producing gasoline by crude oil two-stage hydrogenation is characterized in that: the system comprises a crude oil distillation tower 2, a primary reactor 8, a separator 9, a secondary reactor 12, a cold separator 15, a fractionating tower 17 and a gasoline collecting tank 18, wherein a crude oil distillation tower discharge pipe 3 arranged at the bottom end of the crude oil distillation tower is converged with an additive feed pipe 4 and a fresh hydrogen inlet pipe 6 and is connected to the primary reactor through a booster pump 5 and a first preheater 7, the top end of the primary reactor is connected to the separator, a residual oil outlet 10 is arranged at the bottom end of the separator, the top end of the separator is connected to the top end of the secondary reactor, the bottom end of the secondary reactor is connected to the cold separator through a first cooler 13, the cold separator is connected to the fractionating tower, the top end of the fractionating tower is connected to the gasoline collecting tank through a second cooler 16, and a residual material recycling pipe 19 is arranged at the bottom end of the fractionating tower.
And a circulating hydrogen pipeline 14 is arranged at the top end of the cold separator, and the circulating hydrogen pipeline is converged with the residual material recovery pipe, the gasoline and diesel oil fraction oil pipe 1 arranged at the top end of the crude oil distillation tower and the fresh hydrogen supply pipe 20 and is connected to the top end of the secondary reactor through a second preheater 11.
And a circulating hydrogen pipeline at the top end of the cold separator is combined with a crude oil distillation tower discharge pipe, an additive feeding pipe and a fresh hydrogen inlet pipe and is connected to the primary reactor through a first preheater.
The utility model discloses a working process does:
1) crude oil distillation: introducing crude oil into a crude oil distillation tower, and distilling 25% of gasoline and diesel oil components at the top of the tower and heavy oil components at the bottom of the tower at normal pressure through the crude oil distillation tower;
2) first-order reaction: the heavy oil component at the tower bottom is merged with the hydrogen of a new hydrogen inlet pipe and the additive of an additive inlet pipe through a crude oil distillation tower discharge pipe, is pressurized through a booster pump and then is introduced into a first preheater for preheating; the preheated mixed gas enters a first-stage reactor for reaction;
3) first-stage separation: the product in the first-stage reactor enters a separator through the top end, and 3-5% of unconverted residual oil and added solid matters are separated from a residual oil outlet at the bottom end of the separator;
4) and (3) secondary reaction: the material separated from the top of the separator enters a secondary reactor with a catalyst, wherein the catalyst is a traditional hydrocracking and hydrofining catalyst containing nickel, molybdenum, cobalt and the like;
5) secondary separation: the reaction product at the bottom end of the secondary reactor enters a cold separator through a first cooler, and the product separated from the bottom end of the cold separator enters a fractionating tower and is fractionated into gasoline fraction with the distillation range of the top of the tower being less than 180 ℃ and diesel oil and wax oil components with the distillation range of the bottom of the tower being more than 180 ℃ through the fractionating tower;
6) and (3) cyclic reaction: the bottom of the fractionating tower is mixed with straight-run gasoline and diesel oil components distilled from a gasoline and diesel oil fractionating oil pipe arranged at the top end of the crude oil distillation tower through a residual material recovery pipe, new hydrogen in a new hydrogen supply pipe and circulating hydrogen in a circulating hydrogen pipeline, and the mixture after preheating and materials separated from the top end of the separator are introduced into a secondary reactor; meanwhile, a circulating hydrogen pipeline is combined with a crude oil distillation tower discharging pipe, an additive feeding pipe and a fresh hydrogen inlet pipe and is connected to the primary reactor through a first preheater.
7) And (3) gasoline collection: the gasoline fraction is cooled by a second cooler and then collected by a gasoline collecting tank.
Although the embodiments of the present invention and the accompanying drawings are disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims, and therefore, the scope of the present invention is not limited to the disclosure of the embodiments and the accompanying drawings.
Claims (3)
1. A device for producing gasoline by crude oil two-stage hydrogenation is characterized in that: the system comprises a crude oil distillation tower, a primary reactor, a separator, a secondary reactor, a cold separator, a fractionating tower and a gasoline collecting tank, wherein a crude oil distillation tower discharge pipe arranged at the bottom end of the crude oil distillation tower, an additive feeding pipe and a fresh hydrogen inlet pipe are converged and connected to the primary reactor through a pressure pump and a first preheater, the top end of the primary reactor is connected to the separator, a residual oil outlet is arranged at the bottom end of the separator, the top end of the separator is connected to the top end of the secondary reactor, the bottom end of the secondary reactor is connected to the cold separator through a first cooler, the cold separator is connected to the fractionating tower, the top end of the fractionating tower is connected to the gasoline collecting tank through a second cooler, and a residual material recycling pipe is arranged at the bottom end of the fractionating tower.
2. The apparatus for producing gasoline by two-stage hydrogenation of crude oil according to claim 1, wherein: and a circulating hydrogen pipeline is arranged at the top end of the cold separator, and the circulating hydrogen pipeline is converged with the residual material recovery pipe, the gasoline and diesel oil fraction oil pipe arranged at the top end of the crude oil distillation tower and the fresh hydrogen supply pipe and is connected to the top end of the secondary reactor through a second preheater.
3. The apparatus for producing gasoline by two-stage hydrogenation of crude oil according to claim 2, wherein: and a circulating hydrogen pipeline at the top end of the cold separator is combined with a crude oil distillation tower discharge pipe, an additive feeding pipe and a fresh hydrogen inlet pipe and is connected to the primary reactor through a first preheater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021272437.8U CN212610448U (en) | 2020-07-03 | 2020-07-03 | Device for producing gasoline by crude oil two-stage hydrogenation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021272437.8U CN212610448U (en) | 2020-07-03 | 2020-07-03 | Device for producing gasoline by crude oil two-stage hydrogenation |
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| CN212610448U true CN212610448U (en) | 2021-02-26 |
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| CN202021272437.8U Active CN212610448U (en) | 2020-07-03 | 2020-07-03 | Device for producing gasoline by crude oil two-stage hydrogenation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111849553A (en) * | 2020-07-03 | 2020-10-30 | 张家港保税区慧鑫化工科技有限公司 | Device and process for producing gasoline by crude oil two-stage hydrogenation |
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2020
- 2020-07-03 CN CN202021272437.8U patent/CN212610448U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111849553A (en) * | 2020-07-03 | 2020-10-30 | 张家港保税区慧鑫化工科技有限公司 | Device and process for producing gasoline by crude oil two-stage hydrogenation |
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