CN216273955U - Heavy oil deep processing device - Google Patents
Heavy oil deep processing device Download PDFInfo
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- CN216273955U CN216273955U CN202120595479.3U CN202120595479U CN216273955U CN 216273955 U CN216273955 U CN 216273955U CN 202120595479 U CN202120595479 U CN 202120595479U CN 216273955 U CN216273955 U CN 216273955U
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Abstract
The utility model provides a heavy oil deep processing device, belongs to petrochemical equipment technical field, including the riser reactor, the riser reactor is used for carrying out catalytic cracking reaction, and the bottom is provided with in advance lift gas inlet pipe and heavy oil inlet pipe, the lift gas inlet pipe sets up dry gas inlet pipe and vapour inlet pipe in advance, the dry gas inlet pipe slope sets up and forms the acute angle with the vapour inlet pipe, vapour inlet pipe and dry gas inlet pipe pass through proportional control ware control. By arranging the pre-lifting gas feeding pipe, the dry gas feeding pipe and the steam feeding pipe, dry gas and steam in a preset proportion are mixed to form pre-lifting gas to be introduced into the lifting pipe reactor, wherein the introduction of the dry gas can avoid the cracking of a catalyst, improve the selectivity of the catalyst, improve the product distribution, improve the yield of gasoline and diesel oil in the product, reduce the yield of the dry gas and increase the economic benefit.
Description
Technical Field
The utility model belongs to the technical field of petrochemical equipment, and particularly relates to a heavy oil deep processing device.
Background
With the rapid rise of the demand of transportation fuels, the oil refining industry in China carries out deep processing on more heavy oil, particularly vacuum residue oil.
The heavy oil deep processing means commonly used at home and abroad mainly comprise thermal cracking, coking, catalytic cracking, hydrocracking and the like. Thermal cracking is developed little after the technology and is gradually eliminated, coking is only suitable for processing vacuum residue, and although hydrocracking is technically advanced, high in product yield, good in quality and high in flexibility, equipment is complex, and a large amount of hydrogen is needed, so that the technical economy is limited to a certain extent, and catalytic cracking is the top in the secondary processing process of petroleum. It can not only change the cheap heavy raw material into the product with high price, high quality and market demand, but also the modern catalytic cracking device has the advantages of simple structure, wide raw material, long running period, flexible operation, various catalysts, simple operation and low operation cost, so it is widely used in the oil refining industry.
In the prior art, steam is adopted as a fluidized medium in the heavy oil catalytic cracking reaction, but the problems of large amount of steam required for the reaction, large discharge amount of generated sewage, energy consumption, easy cracking of a high-temperature catalyst under the action of steam, high cost and low content of gasoline and diesel oil in the product exist.
Disclosure of Invention
In view of the above, there is a need to provide a deep processing apparatus for heavy oil, which can solve the problems of large discharge of sewage, high energy consumption, easy cracking of high temperature catalyst under the action of steam, high cost, and low gasoline and diesel oil content in the product, which are caused by using steam as a fluidizing medium.
The utility model provides a heavy oil deep processing device, includes the riser reactor, the riser reactor is used for carrying out catalytic cracking reaction, and the bottom is provided with in advance lift gas inlet pipe and heavy oil inlet pipe, the lift gas inlet pipe sets up dry gas inlet pipe and vapour inlet pipe in advance, dry gas inlet pipe slope sets up and forms the acute angle with vapour inlet pipe, vapour inlet pipe and dry gas inlet pipe pass through the control of proportion controller.
Preferably, the corner of pre-lifting gas inlet pipe is an arc-shaped corner, and the dry gas inlet pipe is arranged on the outer wall of the arc-shaped corner of the pre-lifting gas inlet pipe.
Preferably, the heavy oil inlet pipe, the dry gas feed pipe and the vapor feed pipe of the riser reactor are respectively provided with a flow control valve.
Preferably, the heavy oil deep processing device further comprises a settler, wherein the settler is used for gas-solid separation and is provided with an oil mixture inlet, an oil gas outlet and a catalyst outlet, and the oil mixture inlet of the settler is connected with the oil mixture outlet of the riser reactor.
Preferably, the heavy oil deep processing device further comprises a regenerator, wherein the regenerator is used for regenerating a catalyst and is arranged at the lower part of the settler, a catalyst inlet of the regenerator is connected with a catalyst outlet of the settler, and a catalyst outlet of the regenerator is connected with a regenerated catalyst inlet of the riser reactor.
Preferably, a catalyst conveying pipe is arranged at the lower end of the regenerator, a control valve is arranged on the catalyst conveying pipe, and an outlet of the catalyst conveying pipe is connected with a catalyst inlet of the riser reactor.
Preferably, the heavy oil deep processing device further comprises a fractionating tower, wherein the fractionating tower is used for oil gas fractionation, an oil gas inlet and a sewage outlet are formed in the bottom of the fractionating tower, a liquefied gas outlet, a gasoline outlet and a diesel oil outlet are formed in the middle of the fractionating tower, a dry gas outlet is formed in the top of the fractionating tower, the oil gas inlet of the fractionating tower is connected with the oil gas outlet of the settler, and the dry gas outlet of the fractionating tower is connected with the dry gas feeding pipe.
Preferably, the heavy oil deep processing device further comprises a compressor, the compressor is arranged between the riser reactor and the fractionating tower, an inlet of the compressor is connected with a dry gas outlet of the fractionating tower, and an outlet of the compressor is connected with the dry gas feeding pipe.
By adopting the technical scheme, the utility model has the beneficial effects that:
the riser reactor is provided with a pre-lifting gas feeding pipe, the pre-lifting gas feeding pipe is provided with a dry gas feeding pipe and a steam feeding pipe, steam and dry gas are introduced into the pre-lifting gas feeding pipe according to a preset proportion, under the action of steam flow, dry gas is sucked into the pre-lifting gas feeding pipe to form pre-lifting gas, the pre-lifting gas is introduced into the riser reactor from the pre-lifting gas feeding pipe, the proportional controller is used for controlling valves of the steam feeding pipe and the dry gas feeding pipe, by controlling the proportion of the steam and the dry gas, the pre-lift gas adopted by the scheme has the advantages that on one hand, the existence of partial dry gas ensures that the catalyst is not easy to crack when flowing upwards in the riser reactor, thereby protecting the catalyst to a certain extent, enhancing the activity and the selectivity of the catalyst, further improves the product distribution, improves the yield of gasoline and diesel oil in the product, reduces the yield of dry gas and increases the economic benefit. On the other hand, the dry gas generated by catalytic cracking is partially recycled, and the dry gas replaces partial steam, so that the energy is saved, the environment is protected, and the sewage discharge is reduced.
Drawings
FIG. 1 is a schematic view of a heavy oil deep processing apparatus.
In the figure: riser reactor 100, settler 200, regenerator 300, fractionation column 400, pre-lift gas feed line 110, dry gas feed line 111, vapor feed line 112, catalyst transfer line 310.
Detailed Description
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Referring to fig. 1, a deep processing apparatus for heavy oil comprises: riser reactor 100, riser reactor 100 is used for carrying out catalytic cracking reaction, and the bottom is provided with pre-lift gas inlet pipe 110 and heavy oil inlet pipe, pre-lift gas inlet pipe 110 sets up dry gas inlet pipe 111 and vapour inlet pipe 112, dry gas inlet pipe 111 slope sets up and forms the acute angle with vapour inlet pipe 112, vapour inlet pipe 112 and dry gas inlet pipe 111 pass through the control of proportional controller.
The steam and the dry gas are respectively introduced into a steam feed pipe and a dry gas feed pipe, the dry gas is sucked into a pre-lifting gas feed pipe 110 to form pre-lifting gas under the drive of the steam, the introduction ratio of the steam and the dry gas is controlled by a ratio controller of a steam inlet and a dry gas inlet, meanwhile, a catalyst entering a riser reactor flows upwards under the action of the pre-lifting gas and contacts heavy oil at a heavy oil inlet pipe, and the heavy oil and the catalyst undergo a catalytic cracking reaction in the riser reactor 100 to form an oil mixture.
Further, the corner of pre-lift gas feed pipe 110 is an arc-shaped corner, and dry gas feed pipe 111 is disposed on the outer wall of the arc-shaped corner of pre-lift gas feed pipe 110, so as to suck dry gas into pre-lift gas feed pipe 110 when vapor flows.
Further, the heavy oil inlet pipe, the dry gas feed pipe 111 and the vapor feed pipe 112 of the riser reactor 100 are provided with flow control valves, respectively, for controlling the amount of heavy oil, dry gas and vapor introduced into the riser reactor 100.
Further, the heavy oil deep processing device further comprises a settler 200, wherein the settler 200 is used for gas-solid separation and is provided with an oil mixture inlet, an oil gas outlet and a catalyst outlet, the oil mixture inlet is connected with the outlet of the riser reactor 100, and the oil mixture flows out from the outlet of the riser reactor 100 and enters the settler 200 for separation.
Further, the heavy oil deep processing device further comprises a regenerator 300, wherein the regenerator 300 is used for catalyst regeneration and is arranged at the lower part of the settler 300, a catalyst inlet of the regenerator 300 is connected with a catalyst outlet of the settler 200, a catalyst outlet of the regenerator 300 is connected with a catalyst inlet of the riser reactor 100, a catalyst separated from the settler 200 enters the regenerator 300 for regeneration, and the generated regenerated catalyst enters the riser reactor 100 again for recycling.
Preferably, a catalyst conveying pipe 310 is disposed at the lower end of the regenerator 300, a control valve is disposed on the catalyst conveying pipe 310, an outlet of the catalyst conveying pipe 310 is connected to a regenerated catalyst inlet of the riser reactor 100, the catalyst conveying pipe 310 is used for conveying a catalyst, and the control valve is used for controlling the amount of the regenerated catalyst entering the riser reactor 100.
Further, heavy oil deep-processing device still includes fractionating tower 400, fractionating tower 400 is used for the oil gas fractionation, and the bottom sets up oil gas entry and sewage outlet, and the middle part sets up liquefied gas export, gasoline export and diesel oil export, and the top sets up the dry gas export, the oil gas entry of fractionating tower 400 is connected the oil gas export of settler 200, the dry gas export of fractionating tower 400 is through connecting dry gas inlet pipe 111, and the oil gas that separates from settler 200 gets into fractionating tower 400 and fractionates, and the dry gas that the fractionation produced gets into and promotes gas inlet pipe reuse in advance, and liquefied gas, gasoline, the diesel oil that the fractionation produced are stored respectively for later use, and sewage is discharged by the sewage outlet.
Further, the heavy oil deep processing device further comprises a compressor 500, the compressor is arranged between the riser reactor 100 and the fractionating tower 400, an inlet of the compressor 500 is connected with a dry gas outlet of the fractionating tower 400, an outlet of the compressor 500 is connected with a dry gas feeding pipe 111, and dry gas generated by fractionation enters the compressor 500 from the dry gas outlet of the fractionating tower 400 to be compressed and then enters the pre-lifting gas feeding pipe 110.
The technical effects achieved by the present invention will be described in further detail below with reference to specific examples.
The pre-lift gas was introduced into the pre-lift gas feed line 110 at the bottom of the riser reactor 100 at an amount of 1.5t/h, wherein the dry gas was 0.27 t/h and the vapor was 1.23 t/h. Introducing heavy oil into the riser reactor 100 from a heavy oil inlet pipe, wherein the addition of the heavy oil is 22.8 t/h, simultaneously introducing a catalyst into the riser reactor 100 from an outlet of a regenerator 300, making the catalyst flow upwards under the drive of pre-lift gas, and performing catalytic cracking reaction in the riser reactor 100 after the catalyst contacts the heavy oil, wherein the reaction conditions of a reaction zone of the riser reactor 100 are as follows: the reaction temperature is 505 ℃, the reaction pressure is 0.1MPa, the generated oil gas and the catalyst enter the settler 200 together to realize gas-solid separation, the catalyst enters the regenerator 300 from the outlet of the settler 200 for regeneration, and the regenerated catalyst flows out from the outlet of the regenerator 300 and enters the riser reactor 100 again.
The separated oil gas flows out from the outlet at the top of the settler 200 and enters the fractionating tower 400 from the bottom for fractionation, the fractionated dry gas flows out from the top of the fractionating tower 400 and enters the dry gas feeding pipe 111 after passing through an air compressor, the liquefied gas flows out from the liquefied gas outlet and enters the liquefied gas storage tank, the gasoline flows out from the gasoline gas outlet and enters the gasoline storage tank, the diesel oil flows out from the diesel oil outlet and enters the diesel oil storage tank, and the sewage flows out from the bottom of the fractionating tower 400 for treatment and is discharged after reaching the standard. When steam is used as pre-lift gas, the catalyst is added for 1.5t every day on average, and the catalyst is added for 1.21t every day on average according to the using condition according to the implementation of the scheme.
To verify the effectiveness of the present invention, the average value of the product distribution obtained by a number of tests using the apparatus and process described in FIG. 1 was compared with the average value of the product distribution obtained by a comparative example using steam as the pre-lift gas, all other conditions being the same as in the examples, as shown in Table 1.
The distribution of the product obtained by the test of the apparatus compared with the distribution of the product obtained without modification is shown in Table 1.
TABLE 1 product distribution
| Type of process | Comparative example | Examples |
| Dry gas | 16.9% | 15.9% |
| Liquefied gas | 8.1% | 8.1% |
| Gasoline (gasoline) | 50.2% | 50.8% |
| Diesel oil | 24.8% | 25.2% |
It can be seen from table 1 that the yield of gasoline in the obtained product is improved by 0.6%, the yield of diesel oil is improved by 0.4%, the yield of dry gas is reduced by 1%, the 289Kg of catalyst can be saved on average every day, the cost is reduced by 2890 yuan, and the sewage discharge amount is reduced by using the device and the method of the utility model.
While the utility model has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the utility model.
Claims (8)
1. The utility model provides a heavy oil deep processing device which characterized in that, includes the riser reactor, the riser reactor is used for carrying out catalytic cracking reaction, and the bottom is provided with in advance lift gas inlet pipe and heavy oil inlet pipe, the lift gas inlet pipe sets up dry gas inlet pipe and vapour inlet pipe in advance, dry gas inlet pipe slope sets up and forms the acute angle with the vapour inlet pipe, vapour inlet pipe and dry gas inlet pipe pass through the control of proportion controller.
2. The heavy oil further processing apparatus according to claim 1, wherein: the corner of promoting the gas inlet pipe in advance is the arc corner, the dry gas inlet pipe sets up on the arc corner outer wall of promoting the gas inlet pipe in advance.
3. The heavy oil further processing apparatus according to claim 1, wherein: and a heavy oil inlet pipe, a dry gas feeding pipe and a steam feeding pipe of the riser reactor are respectively provided with a flow control valve.
4. The heavy oil further processing apparatus according to claim 1, wherein: the heavy oil deep processing device further comprises a settler, wherein the settler is used for gas-solid separation and is provided with an oil mixture inlet, an oil gas outlet and a catalyst outlet, and the oil mixture inlet of the settler is connected with the oil mixture outlet of the riser reactor.
5. The heavy oil further processing apparatus according to claim 4, wherein: the heavy oil deep processing device also comprises a regenerator, wherein the regenerator is used for regenerating a catalyst and is arranged at the lower part of the settler, a catalyst inlet of the regenerator is connected with a catalyst outlet of the settler, and a catalyst outlet of the regenerator is connected with a regenerated catalyst inlet of the riser reactor.
6. The heavy oil further processing apparatus according to claim 5, wherein: the lower end of the regenerator is provided with a catalyst conveying pipe, the catalyst conveying pipe is provided with a control valve, and the outlet of the catalyst conveying pipe is connected with the catalyst inlet of the riser reactor.
7. The heavy oil further processing apparatus according to claim 6, wherein: heavy oil deep-processing device still includes the fractionating tower, the fractionating tower is used for the oil gas to fractionate, and the bottom sets up oil gas entry and sewage outlet, and the middle part sets up liquefied gas export, gasoline export and diesel oil export, and the top sets up the dry gas export, the oil gas entry linkage settler's of fractionating tower oil gas export, the dry gas exit linkage dry gas inlet pipe of fractionating tower.
8. The heavy oil further processing apparatus according to claim 7, wherein: the heavy oil deep processing device further comprises a compressor, the compressor is arranged between the riser reactor and the fractionating tower, an inlet of the compressor is connected with a dry gas outlet of the fractionating tower, and an outlet of the compressor is connected with the dry gas feeding pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120595479.3U CN216273955U (en) | 2021-03-24 | 2021-03-24 | Heavy oil deep processing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120595479.3U CN216273955U (en) | 2021-03-24 | 2021-03-24 | Heavy oil deep processing device |
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| Publication Number | Publication Date |
|---|---|
| CN216273955U true CN216273955U (en) | 2022-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120595479.3U Active CN216273955U (en) | 2021-03-24 | 2021-03-24 | Heavy oil deep processing device |
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| CN (1) | CN216273955U (en) |
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2021
- 2021-03-24 CN CN202120595479.3U patent/CN216273955U/en active Active
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