CN215523223U

CN215523223U - Fused salt heat collector of catalytic regenerator

Info

Publication number: CN215523223U
Application number: CN202122258078.1U
Authority: CN
Inventors: 杨宏伟
Original assignee: Luoyang Andelu Technology Co ltd; Sinopec Engineering Group Co Ltd; Sinopec Guangzhou Engineering Co Ltd
Current assignee: Luoyang Andelu Technology Co ltd; Sinopec Engineering Group Co Ltd; Sinopec Guangzhou Engineering Co Ltd
Priority date: 2021-09-17
Filing date: 2021-09-17
Publication date: 2022-01-14
Anticipated expiration: 2031-09-17

Abstract

The utility model discloses a catalytic regenerator molten salt heat collector, which comprises a regenerator, wherein heat collecting pipes are arranged on the inner side wall of the regenerator, cold molten salt headers and hot molten salt headers are respectively arranged at two ends of each heat collecting pipe, input ports of the cold molten salt headers are communicated with molten salt pipelines, one ends of the molten salt pipelines, far away from the cold molten salt headers, are communicated with cold molten salt pumps, input ports of the cold molten salt pumps are provided with cold molten salt tanks, output ports of the hot molten salt headers are communicated with molten salt pipelines, and one ends of the molten salt pipelines, far away from the hot molten salt headers, are communicated with the hot molten salt tanks. The construction cost is reduced, and the possibility of adopting higher pressure level for steam is provided through the heat extraction of the molten salt and the heat conducting oil.

Description

Fused salt heat collector of catalytic regenerator

Technical Field

The utility model relates to the technical field of heat exchange in the field of petrochemical industry, in particular to a molten salt heat collector of a catalytic regenerator.

Background

In a catalytic cracking unit in the petrochemical industry, a catalyst circulates between a reactor and a regenerator; the deactivated catalyst is regenerated by burning it in a regenerator and the regenerated catalyst is recycled to the reactor, typically a heavy oil catalytic cracking unit. The coking reaction of the catalyst in the regenerator needs to release a large amount of heat, when the heat exceeds the heat required by the catalytic reaction, an external heat exchanger is required to absorb the excessive heat so as to ensure the stable operation of the process, meanwhile, the external heat exchanger also utilizes the excessive heat to generate steam, and an external heat-taking steam generation system is arranged to become an important energy-saving measure in the catalytic cracking device;

the existing external heat collector has various types, but is a water pipe type heat exchanger, and the basic process is as follows: arranging a catalyst material and hot water heat exchanger outside the regenerator, introducing the catalyst material led out from the regenerator into an external heat exchanger after heat exchange with water is finished, adjusting heat extraction quantity by controlling catalyst circulation quantity, enabling the water in the external heat exchanger to reach a saturated state after heat exchange, generating a gas-water mixture, and separating steam from the steam-water mixture in a steam drum;

however, the heat collector has the disadvantages that an independent external heat collector is required to be arranged, the external heat collector and the regenerator are required to be arranged together closely, a steam-water circulation system of the external heat collector is complex, the investment is large, the temperature gradient in the regenerator is increased due to the fact that the catalyst material inlet and outlet are distributed on one side surface of the regenerator, the defect is particularly obvious along with the enlargement of equipment, the pressure of the regenerator is increased due to the fault of a water system, and therefore, the fused salt heat collector of the catalytic regenerator is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a molten salt heat collector of a catalytic regenerator, which solves the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a catalytic regenerator fused salt gets heater, includes regenerator, fused salt pipeline, water pipeling, stove water pipeling and steam conduit, the inside wall of regenerator is installed and is got the heat pipe, it installs cold molten salt header and hot molten salt header respectively to get the both ends of heat pipe, the input port of cold fused salt header has cold molten salt pump through fused salt pipeline intercommunication, cold molten salt jar is installed to the input port of cold molten salt pump, the delivery outlet of hot fused salt header has the hot molten salt jar through fused salt pipeline intercommunication, the hot molten salt pump is installed to the delivery outlet of hot molten salt jar, the delivery outlet of hot molten salt pump has steam superheater through fused salt pipeline intercommunication.

As further preferable in the present technical solution: the output port of the steam superheater is communicated with a steam evaporator through a molten salt pipeline, and the arranged steam evaporator is used for heat exchange to realize the effect of taking heat from molten salt.

As further preferable in the present technical solution: the delivery outlet of steam evaporator is through fused salt pipeline and stove water pipeline intercommunication respectively have water preheater and steam pocket, the delivery outlet of water preheater passes through the fused salt pipeline and communicates in the input port of cold molten salt jar, through the connection of above-mentioned setting, realizes that the holistic fused salt of device gets the thermal cycle operation.

As further preferable in the present technical solution: the delivery outlet of water heater has the steam pocket through water piping intercommunication, realizes through foretell setting that the water in the water heater enters into the inside of steam pocket.

As further preferable in the present technical solution: the output port of the steam drum is communicated with the input port of the steam evaporator through the boiler water pipeline, and boiler water circulation of the device is realized through the arrangement.

As further preferable in the present technical solution: the output port of the steam pocket is communicated with the input port of the steam superheater through a steam pipeline, and the steam pocket is connected with the steam superheater to heat the steam and carry out output operation.

Compared with the prior art, the utility model has the beneficial effects that: the utility model cancels an external heat collector, so that the arrangement of the regenerator is simpler, and the heat collecting pipes are uniformly arranged in the regenerator, thereby overcoming the temperature gradient of the regenerator, overcoming the problem of pressure rise of the regenerator caused by leakage of a water pipe type external heat collector, simplifying the structure of a heat collecting surface, reducing the construction cost, and providing possibility for adopting higher pressure level for steam by heat collection through molten salt and heat conducting oil.

Drawings

FIG. 1 is a schematic flow diagram of a molten salt and heat transfer oil heat extraction system of the present invention;

fig. 2 is a schematic flow chart of a heat removal system of a conventional external heat remover.

In the figure: 1. a cold molten salt tank; 2. a cold molten salt pump; 3. taking a heat pipe; 4. a hot-melt salt tank; 5. a hot-melt salt pump; 6. a steam superheater; 7. a vapor evaporator; 8. a water preheater; 9. a molten salt conduit; 10. a regenerator; 11. a cold molten salt header; 12. a hot-melt salt header; 13. a water conduit; 14. a boiler water pipeline; 15. a steam line; 16. and (4) a steam drum.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

Referring to fig. 1-2, the present invention provides a technical solution: the utility model provides a catalytic regenerator fused salt gets heater, including regenerator 10, fused salt pipeline 9, water pipeling 13, furnace water pipeling 14 and steam conduit 15, regenerator 10's inside wall is installed and is got heat pipe 3, it installs cold fused salt header 11 and hot molten salt header 12 respectively to get the both ends of heat pipe 3, the input port of cold fused salt header 11 has cold fused salt pump 2 through fused salt pipeline 9 intercommunication, cold fused salt jar 1 is installed to the input port of cold fused salt pump 2, the delivery outlet of hot molten salt header 12 has hot molten salt jar 4 through fused salt pipeline 9 intercommunication, hot molten salt pump 5 is installed to the delivery outlet of hot molten salt jar 4, the delivery outlet of hot molten salt pump 5 has steam superheater 6 through fused salt pipeline 9 intercommunication.

In this embodiment, specifically: the delivery outlet of the steam superheater 6 is communicated with a steam evaporator 7 through a molten salt pipeline 9, and the steam evaporator 7 is used for heat exchange through arrangement, so that the effect of taking heat from molten salt is realized.

In this embodiment, specifically: the output port of the steam evaporator 7 is respectively communicated with a water preheater 8 and a steam drum 16 through a molten salt pipeline 9 and a furnace water pipeline 14, the output port of the water preheater 8 is communicated with the input port of the cold molten salt tank 1 through the molten salt pipeline 9, and the integral molten salt heat transfer circulation operation of the device is realized through the connection of the above arrangement.

In this embodiment, specifically: the output port of the water preheater 8 is communicated with a steam drum 16 through a water pipeline 13, and the water in the water preheater 8 enters the steam drum 16 through the arrangement.

In this embodiment, specifically: the outlet of the steam drum 16 is communicated with the inlet of the steam evaporator 7 through the boiler water pipeline 14, and boiler water circulation of the device is realized through the arrangement.

In this embodiment, specifically: an output port of the steam drum 16 is communicated with an input port of the steam superheater 6 through a steam pipeline 15, and the steam drum 16 is connected with the steam superheater 6 to heat the steam and perform output operation.

Working principle or structure principle, when working, the cold molten salt from the cold molten salt tank 1 enters the cold molten salt pump 2 to be pressurized, the pressurized cold molten salt enters the cold molten salt header 11 and then is distributed to the heat extraction pipe 3 arranged in the regenerator 10 through the cold molten salt header 11, so that the temperature is raised to obtain hot molten salt, the hot molten salt is collected in the hot molten salt header 12 and enters the connected hot molten salt tank 4 to be stored through the molten salt pipeline 9, the hot molten salt enters the hot molten salt pump 5 from the hot molten salt tank 4, and is pressurized through the hot molten salt pump 5, and then sequentially passes through the steam superheater 6, the steam evaporator 7 and the water preheater 8 to become cold molten salt, and finally flows into the cold molten salt tank 1 through the molten salt pipeline 9 to complete a cycle, and all the devices are connected through the molten salt pipeline 9, compared with the existing heat extraction process, the external heat extractor is cancelled, so that the heat extraction system and the regenerator 10 are independently arranged, because the working medium is molten salt, the failure of the heat taking pipe 3 has no influence on the pressure of the regenerator 10, so that the operating parameters of the steam system are further improved, the safety is kept and the flexibility is provided;

the heat load of the heat taking system takes the temperature of a regenerator 10 as a control object, takes the molten salt flow as a main adjusting means, takes the temperature of the molten salt as a feedback signal, takes water supply and steam flows as conventional flows, water supply enters each section of a water preheater 8 through a water pipeline 13 to absorb the heat of the molten salt, then enters a steam drum 16 through the water pipeline 13, steam water in a steam evaporator 7 enters the steam drum 16 through a boiler water pipeline 14, effective separation operation can be carried out in the steam drum 16, separated steam enters a steam superheater 6 through a steam pipeline 15, and the steam is heated and output in the steam superheater 6.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a catalytic regenerator fused salt heat extractor, includes regenerator (10), fused salt pipeline (9), water pipeling (13), stove water pipeline (14) and steam conduit (15), its characterized in that: the utility model discloses a heat pump, including regenerator (10), heat pipe (3) are got to the inside wall of regenerator (10) is installed, cold molten salt header (11) and hot molten salt header (12) are installed respectively to the both ends of getting heat pipe (3), the input port of cold molten salt header (11) has cold molten salt pump (2) through fused salt pipeline (9) intercommunication, cold molten salt jar (1) is installed to the input port of cold molten salt pump (2), the delivery outlet of hot molten salt header (12) has hot molten salt jar (4) through fused salt pipeline (9) intercommunication, hot molten salt pump (5) are installed to the delivery outlet of hot molten salt jar (4), the delivery outlet of hot molten salt pump (5) has steam superheater (6) through fused salt pipeline (9) intercommunication.

2. A catalytic regenerator molten salt heat collector as claimed in claim 1, wherein: the output port of the steam superheater (6) is communicated with a steam evaporator (7) through a molten salt pipeline (9).

3. A catalytic regenerator molten salt heat collector as claimed in claim 2, wherein: the delivery outlet of the steam evaporator (7) is respectively communicated with a water preheater (8) and a steam drum (16) through a molten salt pipeline (9) and a furnace water pipeline (14), and the delivery outlet of the water preheater (8) is communicated with the input outlet of the cold molten salt tank (1) through the molten salt pipeline (9).

4. A catalytic regenerator molten salt heat collector as claimed in claim 3, wherein: the outlet of the water preheater (8) is communicated with a steam drum (16) through a water pipeline (13).

5. A catalytic regenerator molten salt heat collector as claimed in claim 3, wherein: the outlet of the steam drum (16) is communicated with the inlet of the steam evaporator (7) through a boiler water pipeline (14).

6. A catalytic regenerator molten salt heat collector as claimed in claim 3, wherein: an output port of the steam drum (16) is communicated with an input port of the steam superheater (6) through a steam pipeline (15).