CN212669616U - Fuel oil hydrogenation ammonia injection cracking device - Google Patents
Fuel oil hydrogenation ammonia injection cracking device Download PDFInfo
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- CN212669616U CN212669616U CN202022281228.6U CN202022281228U CN212669616U CN 212669616 U CN212669616 U CN 212669616U CN 202022281228 U CN202022281228 U CN 202022281228U CN 212669616 U CN212669616 U CN 212669616U
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Abstract
The utility model discloses an ammonia cracker is annotated in fuel oil hydrogenation, including following constitutional unit: the system comprises a refining reactor, a hydrocracking reactor, a high-pressure separation tank, a low-pressure separation tank, a cold high-pressure separation tank, a recycle hydrogen buffer tank, a heat exchanger, an air cooler, a compressor, an ammonia water tank and a high-pressure pump. The cracking device can reduce the concentration of hydrogen sulfide in the circulating hydrogen, improve the hydrocracking efficiency of the fuel oil and reduce the processing cost.
Description
Technical Field
The utility model relates to a fuel oil hydrocracking field especially relates to a fuel oil hydrogenation annotates ammonia device.
Background
The wax oil processed by the cracking reaction unit of the fuel oil hydrogenation device is designed to be low-sulfur wax oil with the sulfur content of less than 3000mg/kg, the processing amount is designed to be 53t/h (low-sulfur wax oil is 38t/h, low-sulfur tail oil is 15t/h), and the concentration of hydrogen sulfide in circulating hydrogen is less than 1000 mg/kg; in the actual production process, the processing raw material wax oil has the sulfur content of 20000mg/kg, so that the processing raw material wax oil needs to be mixed with low-sulfur tail oil (the sulfur content is less than 100mg/kg) for feeding, the maximum processing capacity of the high-sulfur wax oil is 8t/h, a 45t/h system of the low-sulfur tail oil carries a large amount of sulfur, hydrogen sulfide is generated after hydrogenation, the concentration of the hydrogen sulfide in the circulating hydrogen is more than 3000mg/kg, the high-concentration hydrogen sulfide brings great hidden dangers to the safe and long-term operation of equipment such as a circulating hydrogen compressor, a reaction product heat exchanger and the like, the desulfurization reaction is inhibited, and the improvement of the processing capacity of the raw material of the device is also inhibited.
SUMMERY OF THE UTILITY MODEL
Based on the above problem, the utility model aims at providing a fuel oil hydrogenation annotates ammonia device, it is through increasing an aqueous ammonia injection pipeline flow in the water injection system behind the hydrocracking reactor for hydrogen sulfide and ammonia react in the aqueous solution and generate ammonium sulfide, thereby dissolve in the aqueous solution effectively reduce the content of hydrogen sulfide in the circulating hydrogen, finally hydrogen sulfide concentration falls to below 1000mg/kg in the circulating hydrogen, the aqueous solution that contains ammonium sulfide carries out water oil separating with the oil after the reaction in the knockout drum, the aqueous solution is sent to acid water strip unit and is carried out purification treatment.
The fuel oil hydrogenation ammonia injection device comprises the following structural units:
the system comprises a refining reactor, a hydrocracking reactor, a high-pressure separation tank, a low-pressure separation tank, a cold high-pressure separation tank, a recycle hydrogen buffer tank, a heat exchanger, an air cooler, a compressor, an ammonia water tank and a high-pressure pump.
Preferably, the refining reactor is connected with the hydrocracking reactor, the other end of the hydrocracking reactor is connected with the high pressure separator, the upper end of the high pressure separator is connected with the heat exchanger, the heat exchanger is connected with the air cooler, the air cooler is connected with the cold high pressure separator, the upper end of the cold high pressure separator is connected with the circulating hydrogen buffer tank, the lower end of the cold high pressure separator is connected with the acidic water stripping unit, and the other end of the acidic water stripping unit is connected with an ammonia gas recovery device.
Preferably, the other end of the recycle hydrogen buffer tank is connected with the compressor, and the compressor is connected with the refining reactor pipeline.
Preferably, the lower end of the high-pressure separation tank is connected with the low-pressure separation tank, the other end of the low-pressure separation tank is connected with the rectification unit, and the rectification unit is connected with the cold high-pressure separation tank through a pipeline.
Preferably, an ammonia water tank is arranged between the heat exchanger and the air cooler and connected with a high-pressure pump.
Compared with the prior art, the utility model discloses following beneficial effect has: utilize the utility model discloses a cracker can reduce the hydrogen sulfide concentration in the circulating hydrogen, finally makes hydrogen sulfide concentration in the circulating hydrogen drop to below 1000mg/kg, has improved the hydrocracking efficiency of fuel oil simultaneously, and the work load of fuel oil promotes to 20t/h, has reduced the processing cost.
Drawings
FIG. 1 is a fuel oil hydrogenation ammonia injection cracking device according to the utility model,
the system comprises a refining reactor 1, a hydrocracking reactor 2, a high-pressure separating tank 3, a low-pressure separating tank 4, a cold high-pressure separating tank 5, a circulating hydrogen buffer tank 6, a heat exchanger 7, an air cooler 8, a compressor 9, an ammonia water tank 10, a high-pressure pump 11, an acidic water stripping unit 12, an ammonia gas recovery device 13 and a rectifying device 14.
Detailed Description
The present invention will be further described with reference to the following specific embodiments.
A fuel oil hydrogenation ammonia injection cracking device comprises the following structural units:
the system comprises a refining reactor 1, a hydrocracking reactor 2, a high-pressure separating tank 3, a low-pressure separating tank 4, a cold high-pressure separating tank 5, a circulating hydrogen buffer tank 6, a heat exchanger 7, an air cooler 8, a compressor 9, an ammonia water tank 10 and a high-pressure pump 11.
The refining reactor 1 and the hydrocracking reactor 2, the other end of the hydrocracking reactor 2 with the high-pressure separator 3 is connected, the upper end of the high-pressure separator 3 is connected with the heat exchanger 7, the heat exchanger 7 is connected with the air cooler 8, the air cooler 8 is connected with the cold high-pressure separator 5, the upper end of the cold high-pressure separator 5 is connected with the circulating hydrogen buffer tank 6, the lower end of the cold high-pressure separator 5 is connected with an acidic water stripping unit 12, and the other end of the acidic water stripping unit 12 is connected with an ammonia gas recovery device 13. The other end of the recycle hydrogen buffer tank 6 is connected with the compressor 9, and the compressor 9 is connected with the refining reactor 1 through a pipeline. The lower extreme of high branch jar 3 with low branch jar 4 links to each other, the other end of low branch jar 4 links to each other with rectifying unit 14, rectifying unit 14 with cold high branch jar 5 tube coupling. An ammonia water tank 10 is arranged between the heat exchanger 7 and the air cooler 8, and the ammonia water tank 10 is connected with a high-pressure pump 11.
A fuel oil hydrogenation ammonia injection cracking process comprises the following steps:
providing the fuel oil hydrogenation ammonia injection cracking device;
the heated high-sulfur raw oil is mixed with hydrogen and then enters a refining reactor 1 from the top to react and remove sulfur, nitrogen, aromatic hydrocarbon, olefin and oxygen in the raw oil, and a large amount of hydrogen sulfide can be generated in the process;
the reacted materials continuously enter a hydrocracking reactor 2 for cracking reaction, macromolecular organic matters are cracked into micromolecular organic matters, and products after the reaction enter a high molecular tank 3 for gas-liquid phase separation;
the gas phase passes through a heat exchanger 7, high-concentration ammonia in an ammonia water tank 10 is injected into a reaction system by virtue of high-pressure water injection and a high-pressure pump 11, and then is cooled by an air cooler 8 to become cold liquid-phase oil and hydrogen;
hydrogen enters a circulating hydrogen buffer tank 6, is continuously compressed by a compressor 9 and then is mixed with high-sulfur raw oil to enter a refining reactor 1 again for reaction, cold liquid-phase oil enters a cold high-pressure separation tank 5 for oil-water separation, the separated oil enters a rectifying unit 14 to produce finished oil, water enters an acidic water stripping unit 12 to separate hydrogen sulfide and ammonia dissolved in the water, and the ammonia is collected by an ammonia recovery device 13;
the liquid phase separated from the high-pressure separation tank 3 enters the low-pressure separation tank 4 for flash evaporation and pressure reduction, and then the oil product is sent to a rectification unit 14 to produce the finished oil product.
The principle and the implementation of the present invention are explained herein by using specific examples, and the above description of the embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (4)
1. The fuel oil hydrogenation ammonia injection cracking device is characterized by comprising the following structural units:
the system comprises a refining reactor (1), a hydrocracking reactor (2), a high-pressure separating tank (3), a low-pressure separating tank (4), a cold high-pressure separating tank (5), a circulating hydrogen buffer tank (6), a heat exchanger (7), an air cooler (8), a compressor (9), an ammonia water tank (10) and a high-pressure pump (11);
the refining reactor (1) with hydrocracking reactor (2), the other end of hydrocracking reactor (2) with high branch jar (3) are connected, the upper end of high branch jar (3) is connected heat exchanger (7), heat exchanger (7) with air cooler (8) are connected, air cooler (8) with cold high branch jar (5) are connected, cold high branch jar (5) upper end is connected circulation hydrogen buffer tank (6), cold high branch jar (5) lower extreme is connected with acid water air stripping unit (12), the other end of acid water air stripping unit (12) is connected with ammonia recovery unit (13).
2. The fuel oil hydrogenation ammonia injection cracking device according to the claim 1, characterized in that the other end of the recycle hydrogen buffer tank (6) is connected with the compressor (9), and the compressor (9) is connected with the refining reactor (1) through a pipeline.
3. The fuel oil hydrogenation ammonia injection cracking device according to the claim 1, characterized in that the lower end of the high-pressure separator (3) is connected with the low-pressure separator (4), the other end of the low-pressure separator (4) is connected with a rectification unit (14), and the rectification unit (14) is connected with the cold high-pressure separator (5) through a pipeline.
4. The fuel oil hydrorefining ammonia injection cracking unit according to claim 1, characterized in that an ammonia tank (10) is arranged between the heat exchanger (7) and the air cooler (8), and the ammonia tank (10) is connected with a high-pressure pump (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022281228.6U CN212669616U (en) | 2020-10-14 | 2020-10-14 | Fuel oil hydrogenation ammonia injection cracking device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022281228.6U CN212669616U (en) | 2020-10-14 | 2020-10-14 | Fuel oil hydrogenation ammonia injection cracking device |
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| CN212669616U true CN212669616U (en) | 2021-03-09 |
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| CN202022281228.6U Active CN212669616U (en) | 2020-10-14 | 2020-10-14 | Fuel oil hydrogenation ammonia injection cracking device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112080321A (en) * | 2020-10-14 | 2020-12-15 | 河北新启元能源技术开发股份有限公司 | Fuel oil hydrogenation ammonia injection cracking device and process thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112080321A (en) * | 2020-10-14 | 2020-12-15 | 河北新启元能源技术开发股份有限公司 | Fuel oil hydrogenation ammonia injection cracking device and process thereof |
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: HEBEI XINXINYUAN ENERGY Co.,Ltd. Assignor: HEBEI XINQIYUAN ENERGY TECHNOLOGY DEVELOPMENT Co.,Ltd. Contract record no.: X2023980040216 Denomination of utility model: A fuel oil hydrogenation and ammonia injection cracking device Granted publication date: 20210309 License type: Common License Record date: 20230822 |