Catalyst regeneration energy recovery heat pump system

Abstract

The invention provides a catalyst regeneration energy recovery heat pump system, and belongs to the technical field of heat pumps. An air channel outside is communicated with a charring-regeneration system through a heat source regenerator, the charring-regeneration system is communicated with the outside through a flue gas channel via a heat exchanger and the heat source regenerator, the charring-regeneration system is communicated with a heating furnace through a CO-rich flue gas channel, and the heating furnace is communicated with the outside through a flue gas channel via the heat exchanger and the heat source regenerator. The low-temperature heat exchanger communicates with the compressor through a circulating working medium channel, the second expansion machine communicates with the compressor through a middle port after communicating with the heat regenerator through a circulating working medium channel, and the compressor communicates with the second expansion machine and the heat regenerator after communicating with a heat supplier through the heat exchanger, the heating furnace and the expansion machine through a circulating working medium channel. The heat regenerator further communicates with the low-temperature heat exchanger through a cycle working medium channel via a third expansion machine. And the heat supplier and the low-temperature heat exchanger are respectively communicated with the outside through a heated medium channel and a low-temperature heat medium channel, so that the catalyst regeneration energy recovery heat pump system is formed.

Description

Technical fields:

[0001] This invention belongs to the field of thermodynamics and heat pump technology. Background technology:

[0002] Catalytic cracking is the process of producing light petroleum products such as liquefied petroleum gas, gasoline, and diesel from heavy petroleum hydrocarbons under the action of a catalyst. When feedstock undergoes catalytic cracking on a catalyst, on the one hand, it generates products such as gases, gasoline, and diesel through cracking and other reactions; on the other hand, condensation reactions occur simultaneously to generate coke deposited on the catalyst surface—which reduces the activity of the catalyst.

[0003] Catalyst regeneration involves burning away the coke deposited on the catalyst with air to restore its activity. This process releases a large amount of high-temperature heat energy, which should be fully utilized. Currently, the main method for recovering energy from regenerated flue gas is to install waste heat boilers to generate steam or further generate power. However, careful analysis reveals the following problems:

[0004] (1) There is a large irreversible loss of temperature difference in the coking process; (2) The composition, temperature and quantity of flue gas are not considered at the same time in the utilization stage; (3) The flue gas energy utilization technology needs to be improved. There is a lot of room for improvement in both power utilization and heating utilization; (4) The flue gas energy recovery is not combined with the overall energy use of the oil refining process to enhance its application value.

[0005] Based on the fundamental principles of simplicity, initiative, safety, and efficiency in energy utilization, this invention presents a catalyst regeneration energy recovery heat pump system with a reasonable process and simple structure, which achieves efficient / high-value recovery and utilization of catalyst regeneration energy. Summary of the Invention:

[0006] The main objective of this invention is to provide a catalyst regeneration energy recovery heat pump system. The specific contents of the invention are described in detail below:

[0007] 1. The catalyst regeneration energy recovery heat pump system mainly consists of a heat source regenerator, a coke combustion-regeneration system, an expander, a compressor, a second expander, a third expander, a regenerator, a heat exchanger, a heater, a heater, and a low-temperature heat exchanger. Externally, it has an air passage connected to the coke combustion-regeneration system via the heat source regenerator. The coke combustion-regeneration system also has a flue gas passage connected to the outside via the heat exchanger and the heat source regenerator. The coke combustion-regeneration system also has a CO-rich flue gas passage connected to the heater. The heater also has a flue gas passage connected to the outside via the heat exchanger and the heat source regenerator. The low-temperature heat exchanger has a circulating working fluid passage connected to the compressor. The second expander... After the regenerator is connected by a circulating working fluid channel, it is connected to the compressor through an intermediate port. The compressor also has a circulating working fluid channel that connects to the expander via a heat exchanger and a heating furnace. The expander also has a circulating working fluid channel that connects to the heater and then splits into two paths—the first path connects to the second expander and the second path connects to the regenerator. The regenerator also has a circulating working fluid channel that connects to the low-temperature heat exchanger via a third expander. The heater also has a heated medium channel that connects to the outside, and the low-temperature heat exchanger also has a low-temperature heat medium channel that connects to the outside. The expander, the second expander, and the third expander are connected to the compressor and transmit power, forming a catalyst regeneration energy recovery heat pump system.

[0008] 2. The catalyst regeneration energy recovery heat pump system is the catalyst regeneration energy recovery heat pump system described in item 1, wherein the heating furnace is equipped with a fuel channel that connects to the outside to form the catalyst regeneration energy recovery heat pump system.

[0009] 3. The catalyst regeneration energy recovery heat pump system is the catalyst regeneration energy recovery heat pump system described in item 1 or 2, wherein the heat source regenerator is connected to the coke burning-regeneration system via an air channel, and the air channel of the heat source regenerator is divided into two paths—the first path is connected to the coke burning-regeneration system and the second path is connected to the heating furnace, thus forming the catalyst regeneration energy recovery heat pump system.

[0010] 4. The catalyst regeneration energy recovery heat pump system is any one of the catalyst regeneration energy recovery heat pump systems described in items 1-3, with the addition of an auxiliary combustion chamber. An external fuel passage connects the auxiliary combustion chamber to the auxiliary combustion chamber. The coke-regeneration system is adjusted so that the flue gas passage connects the coke-regeneration system to the auxiliary combustion chamber, and the auxiliary combustion chamber is further connected to the heat exchanger via a flue gas passage, thus forming the catalyst regeneration energy recovery heat pump system.

[0011] 5. The catalyst regeneration energy recovery heat pump system mainly consists of a heat source regenerator, a coke combustion-regeneration system, an expander, a compressor, a second expander, a third expander, a regenerator, a heat exchanger, a heater, a heater, a low-temperature heat exchanger, an air compressor, a flue gas fan, and a second flue gas fan. Externally, it has an air passage connecting to the coke combustion-regeneration system via the air compressor and the heat source regenerator. The coke combustion-regeneration system also has a flue gas passage connecting to the outside via the flue gas fan, heat exchanger, and heat source regenerator. The coke combustion-regeneration system also has a CO-rich flue gas passage connecting to the heater via the second flue gas fan. The heater also has a flue gas passage connecting to the outside via the heat exchanger and the heat source regenerator. The low-temperature heat exchanger has a circulating working fluid passage connecting to the compressor. The second expander has a circulating working fluid channel connected to the regenerator and then to the compressor via an intermediate port. The compressor also has a circulating working fluid channel connected to the expander via a heat exchanger and a heater. The expander also has a circulating working fluid channel connected to the heater and then splits into two paths—the first path connects to the second expander and the second path connects to the regenerator. The regenerator also has a circulating working fluid channel connected to the low-temperature heat exchanger via a third expander. The heater also has a heated medium channel connected to the outside, and the low-temperature heat exchanger also has a low-temperature heat medium channel connected to the outside. The expander, the second expander, and the third expander are connected to the compressor and transmit power. The flue gas fan and the second flue gas fan are connected to the air compressor and transmit power, forming a catalyst regeneration energy recovery heat pump system.

[0012] 6. The catalyst regeneration energy recovery heat pump system is the catalyst regeneration energy recovery heat pump system described in item 5, wherein the heating furnace is equipped with a fuel channel that connects to the outside to form the catalyst regeneration energy recovery heat pump system.

[0013] 7. The catalyst regeneration energy recovery heat pump system is an auxiliary combustion chamber added to the catalyst regeneration energy recovery heat pump system described in item 5 or 6. The auxiliary combustion chamber is connected to the external fuel channel. The coke-regeneration system is changed from having a flue gas channel connected to the flue gas fan to having a flue gas channel connected to the auxiliary combustion chamber. The auxiliary combustion chamber is then connected to the flue gas fan via a flue gas channel, thus forming the catalyst regeneration energy recovery heat pump system.

[0014] 8. A catalyst regeneration energy recovery heat pump system is formed by adding a second regenerator to any of the catalyst regeneration energy recovery heat pump systems described in items 1-7. The regenerator is modified so that the circulating working fluid channel is connected to the third expander, and the circulating working fluid channel is connected to the third expander via the second regenerator. The low-temperature heat exchanger is modified so that the circulating working fluid channel is connected to the compressor, and the low-temperature heat exchanger is connected to the compressor via the second regenerator, thus forming a catalyst regeneration energy recovery heat pump system.

[0015] 9. A catalyst regeneration energy recovery heat pump system is formed by adding a high-temperature regenerator to any of the catalyst regeneration energy recovery heat pump systems described in items 1-8. The compressor's circulating working fluid channel is connected to the heat exchanger, and the compressor's circulating working fluid channel is connected to the heat exchanger via the high-temperature regenerator. The expander's circulating working fluid channel is connected to the heater, and the expander's circulating working fluid channel is connected to the heater via the high-temperature regenerator, thus forming a catalyst regeneration energy recovery heat pump system.

[0016] 10. A catalyst regeneration energy recovery heat pump system is any one of the catalyst regeneration energy recovery heat pump systems described in items 1-8, with the addition of a high-temperature regenerator. The compressor's circulating working fluid channel is adjusted to be connected to the heat exchanger via the high-temperature regenerator, and the expander's circulating working fluid channel is adjusted to be connected to the heater via the high-temperature regenerator, and then the expander has a circulating working fluid channel connected to the heater, thus forming a catalyst regeneration energy recovery heat pump system.

[0017] 11. A catalyst regeneration energy recovery heat pump system is formed by adding an expansion accelerator to replace the expander in any of the catalyst regeneration energy recovery heat pump systems described in items 1-10, adding a dual-energy compressor to replace the compressor, adding a second expansion accelerator to replace the second expander, and adding a third expansion accelerator to replace the third expander. Attached image description:

[0018] Figure 1 This is a principle thermodynamic system diagram of a catalyst regeneration energy recovery heat pump system provided by the present invention.

[0019] Figure 2 This is a second principle thermodynamic system diagram of a catalyst regeneration energy recovery heat pump system provided by the present invention.

[0020] Figure 3 This is a third principle thermodynamic system diagram of a catalyst regeneration energy recovery heat pump system provided by the present invention.

[0021] Figure 4 This is a fourth principle thermodynamic system diagram of a catalyst regeneration energy recovery heat pump system provided by the present invention.

[0022] Figure 5 This is the fifth principle thermodynamic system diagram of the catalyst regeneration energy recovery heat pump system provided by the present invention.

[0023] Figure 6 This is the sixth principle thermodynamic system diagram of the catalyst regeneration energy recovery heat pump system provided by the present invention.

[0024] Figure 7 This is the seventh principle thermodynamic system diagram of the catalyst regeneration energy recovery heat pump system provided by the present invention.

[0025] Figure 8 This is the eighth principle thermodynamic system diagram of the catalyst regeneration energy recovery heat pump system provided by the present invention.

[0026] Figure 9 This is the ninth principle thermodynamic system diagram of the catalyst regeneration energy recovery heat pump system provided by the present invention.

[0027] Figure 10 This is the tenth principle thermodynamic system diagram of the catalyst regeneration energy recovery heat pump system provided by the present invention.

[0028] In the diagram, 1-Heat source regenerator, 2-Coke-regeneration system, 3-Expander, 4-Compressor, 5-Second expander, 6-Third expander, 7-Regenerator, 8-Heat exchanger, 9-Heating furnace, 10-Heater, 11-Low-temperature heat exchanger, 12-Auxiliary combustion chamber, 13-Air compressor, 14-Smoke machine, 15-Second smoke machine, 16-Second regenerator, 17-High-temperature regenerator, 18-Expander speed-up unit, 19-Dual-energy compressor, 20-Second expander speed-up unit, 21-Third expander speed-up unit; it should also be noted that: ①The low-temperature heat exchanger is an evaporator during the transcritical cycle; ②The separation and purification components required for the coke-regeneration system are considered integral parts of the coke-regeneration system and are not listed separately. Detailed implementation method:

[0029] First, it should be noted that the structure and process are not repeated unless necessary, and obvious processes are not described. The invention will now be described in detail with reference to the accompanying drawings and examples.

[0030] Figure 1 The catalyst regeneration energy recovery heat pump system shown is implemented as follows:

[0031] (1) Structurally, it mainly consists of a heat source regenerator, a coke-regeneration system, an expander, a compressor, a second expander, a third expander, a regenerator, a heat exchanger, a heating furnace, a heater, and a low-temperature heat exchanger; externally, there is an air passage connected to the coke-regeneration system 2 via the heat source regenerator 1, the coke-regeneration system 2 also has a flue gas passage connected to the outside via the heat exchanger 8 and the heat source regenerator 1, the coke-regeneration system 2 also has a CO-rich flue gas passage connected to the heating furnace 9, the heating furnace 9 also has a flue gas passage connected to the outside via the heat exchanger 8 and the heat source regenerator 1, the low-temperature heat exchanger 11 has a circulating working fluid passage connected to the compressor 4, and the second expander 5 After the regenerator 7 is connected by a circulating working fluid channel, it is connected to the compressor 4 through an intermediate port. The compressor 4 also has a circulating working fluid channel that is connected to the expander 3 via the heat exchanger 8 and the heater 9. The expander 3 also has a circulating working fluid channel that is connected to the heater 10 and then splits into two paths—the first path is connected to the second expander 5 and the second path is connected to the regenerator 7. The regenerator 7 also has a circulating working fluid channel that is connected to the low-temperature heat exchanger 11 via the third expander 6. The heater 10 also has a heated medium channel that is connected to the outside, and the low-temperature heat exchanger 11 also has a low-temperature heat medium channel that is connected to the outside. The expander 3, the second expander 5, and the third expander 6 are connected to the compressor 4 and transmit power.

[0032] (2) In terms of process, external air flows through the heat source regenerator 1 to absorb heat and increase its temperature, and then enters the coke-regeneration system 2 to participate in combustion; coke forms on the surface of the air and catalyst, and a series of processes including combustion are carried out to regenerate the catalyst. The coke-regeneration system 2 discharges flue gas with different CO contents in two separate paths; the flue gas generated by the coke-regeneration system 2 and after separation and purification (with low or almost no CO content) flows through the heat exchanger 8 and the heat source regenerator 1 to gradually release heat and cool down, and then is discharged to the outside; the CO-rich flue gas generated by the coke-regeneration system 2 and after separation and purification enters the heating furnace 9. The CO-rich flue gas completes combustion in the heating furnace 9 to generate high-temperature flue gas. The high-temperature flue gas releases heat to the circulating working fluid flowing through the heating furnace 9, and then flows through the heat exchanger 8 and the heat source regenerator 1 to gradually release heat and cool down, and then is discharged to the outside; the circulating working fluid discharged by the compressor 4 flows through the heat exchanger 8 and the heating furnace 9 to gradually absorb heat and increase its temperature, flows through the expander 3 to reduce pressure and do work, flows through the heater 10 to release heat and cool down, and then is divided into Two paths: The first path flows through the second expander 5 to reduce pressure and perform work, then through the regenerator 7 to absorb heat and increase temperature, and finally enters the compressor 4 through the intermediate air inlet port to increase pressure and temperature; the second path enters the regenerator 7 to release heat. The circulating working fluid discharged from the regenerator 7 flows through the third expander 6 to reduce pressure and perform work, then through the low-temperature heat exchanger 11 to absorb heat before entering the compressor 4 to increase pressure and temperature. The flue gas and CO-rich flue gas emitted from the coke-regeneration system 2 provide the driving heat load. The air and flue gas carry away the low-temperature emission heat load through the heat source flow process. The heated medium obtains a medium-temperature heat load through the heater 10, and the low-temperature heat medium provides a low-temperature heat load through the low-temperature heat exchanger 11. The mechanical energy output from the expander 3, the second expander 5, and the third expander 6 provides power to the compressor 4, or the mechanical energy output from the expander 3, the second expander 5, and the third expander 6 provides power to the compressor 4 and the external environment, or the expander 3, the second expander 5, the third expander 6, and the external environment jointly provide power to the compressor 4, forming a catalyst regeneration energy recovery heat pump system.

[0033] Figure 2 The catalyst regeneration energy recovery heat pump system shown is implemented as follows:

[0034] exist Figure 1 In the catalyst regeneration energy recovery heat pump system shown, the heating furnace 9 is equipped with a fuel channel that connects to the outside. The CO-rich flue gas and fuel are burned in the heating furnace 9 to form high-temperature flue gas. The high-temperature flue gas releases heat to the circulating working fluid flowing through the heating furnace 9, and then provides it to the heat exchanger 8 to form the catalyst regeneration energy recovery heat pump system.

[0035] Figure 3 The catalyst regeneration energy recovery heat pump system shown is implemented as follows:

[0036] (1) Structurally, in Figure 2In the catalyst regeneration energy recovery heat pump system shown, the heat source regenerator 1 is connected to the coke-regeneration system 2 via an air channel. The air channel of the heat source regenerator 1 is then divided into two paths: the first path is connected to the coke-regeneration system 2, and the second path is connected to the heating furnace 9.

[0037] (2) In terms of process, with Figure 2 Compared to the catalyst regeneration energy recovery heat pump system shown, the difference is that: external air flows through the heat source regenerator 1 to absorb heat and increase its temperature, and then splits into two paths - the first path enters the coke burning-regeneration system 2 to participate in the combustion chamber, and the second path enters the heating furnace 9 to participate in the combustion chamber; fuel, air and CO-rich flue gas are burned in the heating furnace 9 to generate high-temperature flue gas, and the high-temperature flue gas releases heat to the circulating working fluid flowing through the heating furnace 9, and then provides it to the heat exchanger 8 to form the catalyst regeneration energy recovery heat pump system.

[0038] Figure 4 The catalyst regeneration energy recovery heat pump system shown is implemented as follows:

[0039] (1) Structurally, in Figure 1 In the catalyst regeneration energy recovery heat pump system shown, an auxiliary combustion chamber 12 is added, and an external fuel channel is connected to the auxiliary combustion chamber 12. The coke-regeneration system 2, which was previously connected to the heat exchanger 8 via a flue gas channel, is now connected to the auxiliary combustion chamber 12 via a flue gas channel. The auxiliary combustion chamber 12 is then connected to the heat exchanger 8 via a flue gas channel.

[0040] (2) In terms of process, with Figure 1 Compared to the catalyst regeneration energy recovery heat pump system shown, the difference is that: external fuel enters the auxiliary combustion chamber 12, and the flue gas emitted by the coke-regeneration system 2 enters the auxiliary combustion chamber 12. The fuel and flue gas are burned in the auxiliary combustion chamber 12 to form flue gas at a higher temperature, which is then supplied to the heat exchanger 8 to form the catalyst regeneration energy recovery heat pump system.

[0041] Figure 5 The catalyst regeneration energy recovery heat pump system shown is implemented as follows:

[0042] (1) Structurally, it mainly consists of a heat source regenerator, a coke-regeneration system, an expander, a compressor, a second expander, a third expander, a regenerator, a heat exchanger, a heating furnace, a heater, a low-temperature heat exchanger, an air compressor, a flue gas fan, and a second flue gas fan; externally, there is an air channel that connects to the coke-regeneration system 2 via the air compressor 13 and the heat source regenerator 1. The coke-regeneration system 2 also has a flue gas channel that connects to the outside via the flue gas fan 14, the heat exchanger 8, and the heat source regenerator 1. The coke-regeneration system 2 also has a CO-rich flue gas channel that connects to the heating furnace 9 via the second flue gas fan 14. The heating furnace 9 also has a flue gas channel that connects to the outside via the heat exchanger 8 and the heat source regenerator 1. The low-temperature heat exchanger 11 has a circulating working fluid channel that connects to the compressor 4, the second... Expander 5 has a circulating working fluid channel connected to regenerator 7, and then connected to compressor 4 through an intermediate port. Compressor 4 also has a circulating working fluid channel connected to expander 3 via heat exchanger 8 and heater 9. Expander 3 also has a circulating working fluid channel connected to heater 10, and then splits into two paths—the first path is connected to second expander 5 and the second path is connected to regenerator 7. Regenerator 7 also has a circulating working fluid channel connected to low-temperature heat exchanger 11 via third expander 6. Heater 10 also has a heated medium channel connected to the outside, and low-temperature heat exchanger 11 also has a low-temperature heat medium channel connected to the outside. Expander 3, second expander 5 and third expander 6 are connected to compressor 4 and transmit power. Smoke hood 14 and second smoke hood 14 are connected to air compressor 13 and transmit power.

[0043] (2) In terms of process, with Figure 1 Compared to the catalyst regeneration energy recovery heat pump system shown, the difference lies in the following: external air flows through air compressor 13 to increase pressure and temperature, and then enters heat source regenerator 1 to absorb heat and increase temperature; the flue gas (with low or no CO content) generated and discharged after separation and purification by coke-regeneration system 2 flows through flue gas fan 14 to reduce pressure and perform work, and then enters heat exchanger 8 to release heat and reduce temperature; the CO-rich flue gas generated and discharged after separation and purification by coke-regeneration system 2 flows through second flue gas fan 15 to reduce pressure and perform work, and then is supplied to heating furnace 8; expander 3, The mechanical energy output from the second expander 5, the third expander 6, the smoke generator 14, and the second smoke generator 15 provides power to the compressor 4 and the air compressor 13; or the mechanical energy output from the expander 3, the second expander 5, the third expander 6, the smoke generator 14, and the second smoke generator 15 provides power to the compressor 4, the air compressor 13, and the external environment; or the expander 3, the second expander 5, the third expander 6, the smoke generator 14, the second smoke generator 15, and the external environment jointly provide power to the compressor 4 and the air compressor 13, forming a catalyst regeneration energy recovery heat pump system.

[0044] Figure 6 The catalyst regeneration energy recovery heat pump system shown is implemented as follows:

[0045] (1) Structurally, in Figure 5In the catalyst regeneration energy recovery heat pump system shown, an auxiliary combustion chamber 12 is added, and an external fuel channel is connected to the auxiliary combustion chamber 12. The coke-regeneration system 2, which was previously connected to the flue gas duct 14, is now connected to the auxiliary combustion chamber 12, and the auxiliary combustion chamber 12 is further connected to the flue gas duct 14.

[0046] (2) In terms of process, with Figure 5 Compared to the catalyst regeneration energy recovery heat pump system shown, the difference is that: external fuel enters the auxiliary combustion chamber 12, and the flue gas emitted by the coke-regeneration system 2 enters the auxiliary combustion chamber 12. The fuel and flue gas are burned in the auxiliary combustion chamber 12 to form flue gas at a higher temperature, which is then supplied to the flue gas motor 14, thus forming the catalyst regeneration energy recovery heat pump system.

[0047] Figure 7 The catalyst regeneration energy recovery heat pump system shown is implemented as follows:

[0048] (1) Structurally, in Figure 1 In the catalyst regeneration energy recovery heat pump system shown, a second regenerator is added. The regenerator 7 is connected to the third expander 6 via a circulating working fluid channel. The regenerator 7 is then connected to the third expander 6 via the second regenerator 16. The low-temperature heat exchanger 11 is connected to the compressor 4 via a circulating working fluid channel. The low-temperature heat exchanger 11 is then connected to the compressor 4 via the second regenerator 16.

[0049] (2) In terms of process, with Figure 1 The difference between the catalyst regeneration energy recovery heat pump system process shown is that: the circulating working fluid discharged from the low-temperature heat exchanger 11 flows through the second regenerator 16 to absorb heat and increase temperature, and then enters the compressor 4 to increase pressure and temperature; the second circulating working fluid discharged from the heater 10 flows through the regenerator 7 and the second regenerator 16 to gradually release heat, and then enters the third expander 6 to reduce pressure and do work, thus forming the catalyst regeneration energy recovery heat pump system.

[0050] Figure 8 The catalyst regeneration energy recovery heat pump system shown is implemented as follows:

[0051] (1) Structurally, in Figure 7 In the catalyst regeneration energy recovery heat pump system shown, a high-temperature regenerator 17 is added, and the compressor 4 is adjusted to have a circulating working fluid channel connected to the heat exchanger 8, which is connected to the heat exchanger 8 via the high-temperature regenerator 17. The expander 3 is adjusted to have a circulating working fluid channel connected to the heater 10, which is connected to the heater 10 via the high-temperature regenerator 17.

[0052] (2) In terms of process, with Figure 7Compared with the catalyst regeneration energy recovery heat pump system process shown, the difference is that: the circulating working fluid discharged from the compressor 4 flows through the high-temperature regenerator 17 to absorb heat and increase its temperature, and then provides it to the heat exchanger 8; the circulating working fluid discharged from the expander 3 flows through the high-temperature regenerator 17 to release heat and decrease its temperature, and then provides it to the heater 10, thus forming the catalyst regeneration energy recovery heat pump system.

[0053] Figure 9 The catalyst regeneration energy recovery heat pump system shown is implemented as follows:

[0054] (1) Structurally, in Figure 7 In the catalyst regeneration energy recovery heat pump system shown, a high-temperature regenerator 17 is added. The compressor 4 is adjusted so that the circulating working fluid channel is connected to the heat exchanger 8, and the compressor 4 is connected to the heat exchanger 8 via the high-temperature regenerator 17. The expander 3 is adjusted so that the circulating working fluid channel is connected to the heater 10, and the expander 3 is connected to itself via the high-temperature regenerator 17, and then the expander 3 is connected to the heater 10 via a circulating working fluid channel.

[0055] (2) In terms of process, with Figure 7 The difference between the catalyst regeneration energy recovery heat pump system shown is that the circulating working fluid discharged from the compressor 4 flows through the high-temperature regenerator 17 to absorb heat and increase its temperature, and then provides it to the heat exchanger 8; the circulating working fluid discharged from the heater 9 enters the expander 3 to reduce pressure and do work, and after reaching a certain level, it flows through the high-temperature regenerator 17 to release heat and reduce its temperature, and then enters the expander 3 to continue to reduce pressure and do work, and then provides it to the heater 10, thus forming the catalyst regeneration energy recovery heat pump system.

[0056] Figure 10 The catalyst regeneration energy recovery heat pump system shown is implemented as follows:

[0057] (1) Structurally, in Figure 7 In the catalyst regeneration energy recovery heat pump system shown, an expander accelerator 18 is added and replaces expander 3, a dual-energy compressor 19 is added and replaces compressor 4, a second expander accelerator 18 is added and replaces second expander 5, and a third expander accelerator 21 is added and replaces third expander 6.

[0058] (2) In terms of process, with Figure 7Compared to the catalyst regeneration energy recovery heat pump system flow shown, the difference lies in the following: the circulating working fluid discharged from the dual-energy compressor 19 gradually absorbs heat and increases in temperature through the heat exchanger 8 and the heater 9, then flows through the expander 18 to reduce pressure, perform work, and increase speed, and flows through the heater 10 to release heat and decrease temperature. Afterwards, it splits into two paths—the first path flows through the second expander 18 to reduce pressure, perform work, and increase speed, then flows through the regenerator 7 to absorb heat and increase temperature, and enters the dual-energy compressor 19 through the intermediate air inlet port to increase pressure, increase temperature, and decrease speed; the second path enters the regenerator 7 to release heat; the circulating working fluid discharged from the regenerator 7 flows through the second regenerator 16 to release heat and then enters the third expander 21 to reduce pressure and perform work. The energy is increased and accelerated, and the fluid gradually absorbs heat through the low-temperature heat exchanger 11 and the second regenerator 16. Then it enters the dual-energy compressor 19 to increase pressure and temperature and decrease speed. The mechanical energy output by the expansion speed increaser 18, the second expansion speed increaser 20 and the third expansion speed increaser 21 provides power to the dual-energy compressor 19, or the mechanical energy output by the expansion speed increaser 18, the second expansion speed increaser 20 and the third expansion speed increaser 21 provides power to the dual-energy compressor 19 and the outside, or the expansion speed increaser 18, the second expansion speed increaser 20, the third expansion speed increaser 21 and the outside jointly provide power to the dual-energy compressor 19, forming a catalyst regeneration energy recovery heat pump system.

[0059] The effects achievable by this invention—the catalyst regeneration energy recovery heat pump system proposed in this invention has the following effects and advantages:

[0060] (1) Technical measures were proposed to improve the thermal energy grade of the catalyst regeneration process and to utilize it for refrigeration / heating.

[0061] (2) Reduce irreversible temperature loss during catalyst regeneration and increase the temperature of the initial driving heat source.

[0062] (3) The variable temperature obtains the driving heat load, thereby improving the performance index of the gas heat pump system by increasing the heat absorption temperature.

[0063] (4) The driving heat load provided by the regenerated flue gas and the regenerated CO-rich flue gas is used in stages to reduce the systemic irreversible loss and improve the energy utilization level of catalyst regeneration.

[0064] (5) Fuel (e.g., refinery gas or purchased fuel) provides high-temperature driving heat load through the combustion chamber, which greatly enhances the cooling / heating value of regenerated flue gas energy.

[0065] (6) Achieve efficient / high-value utilization of flue gas energy with relatively simple technical measures, reduce costs, and improve economic efficiency.

[0066] (7) The heat recovery measures increase the average temperature of the heat pump system during the heat absorption process, resulting in less systemic temperature difference loss and improved device performance index.

[0067] (8) Provides multiple technical solutions, which are conducive to the catalyst regeneration energy recovery heat pump system to better enhance the energy application value.

Claims

1. A catalyst regeneration energy recovery heat pump system, mainly composed of a heat source regenerator, a coke burning-regeneration system, an expander, a compressor, a second expander, a third expander, a regenerator, a heat exchanger, a heating furnace, a heat supplier and a low-temperature heat exchanger; externally, an air passage is connected with the coke burning-regeneration system (2) through the heat source regenerator (1), the coke burning-regeneration system (2) also has a flue gas passage connected with the outside through the heat exchanger (8) and the heat source regenerator (1), the coke burning-regeneration system (2) also has a CO-rich flue gas passage connected with the heating furnace (9), the heating furnace (9) also has a flue gas passage connected with the outside through the heat exchanger (8) and the heat source regenerator (1), the low-temperature heat exchanger (11) has a circulating working medium passage connected with the compressor (4), the second expander (5) has a circulating working medium passage connected with the regenerator (7) through an intermediate port and connected with the compressor (4), the compressor (4) also has a circulating working medium passage connected with the expander (3) through the heat exchanger (8) and the heating furnace (9), the expander (3) also has a circulating working medium passage connected with the heat supplier (10) and then divided into two paths, the first path connected with the second expander (5) and the second path connected with the regenerator (7), the regenerator (7) also has a circulating working medium passage connected with the low-temperature heat exchanger (11) through the third expander (6); the heat supplier (10) also has a heated medium passage connected with the outside, the low-temperature heat exchanger (11) also has a low-temperature heat medium passage connected with the outside, the expander (3), the second expander (5) and the third expander (6) are connected with the compressor (4) and transmit power, forming the catalyst regeneration energy recovery heat pump system.

2. The catalyst regeneration energy recovery heat pump system of claim 1, wherein the heating furnace (9) is additionally provided with a fuel passage connected with the outside, forming the catalyst regeneration energy recovery heat pump system.

3. The catalyst regeneration energy recovery heat pump system of claim 1 or claim 2, wherein the air passage of the heat source regenerator (1) connected with the coke burning-regeneration system (2) is adjusted to be divided into two paths, the first path connected with the coke burning-regeneration system (2) and the second path connected with the heating furnace (9), forming the catalyst regeneration energy recovery heat pump system.

4. The catalyst regeneration energy recovery heat pump system of any one of claims 1-3, wherein an auxiliary combustion chamber (12) is additionally provided, the outside has a fuel passage connected with the auxiliary combustion chamber (12), the flue gas passage of the coke burning-regeneration system (2) connected with the heat exchanger (8) is adjusted to be connected with the auxiliary combustion chamber (12), the auxiliary combustion chamber (12) further has a flue gas passage connected with the heat exchanger (8), forming the catalyst regeneration energy recovery heat pump system.

5. The catalyst regeneration energy recovery heat pump system mainly consists of a heat source regenerator, a coke-regeneration system, an expander, a compressor, a second expander, a third expander, a regenerator, a heat exchanger, a heating furnace, a heater, a low-temperature heat exchanger, an air compressor, a flue gas fan, and a second flue gas fan. Externally, there is an air channel that connects to the coke-regeneration system (2) via the air compressor (13) and the heat source regenerator (1). The coke-regeneration system (2) also has a flue gas channel that connects to the outside via the flue gas fan (14), the heat exchanger (8), and the heat source regenerator (1). The coke-regeneration system (2) also has a CO-rich flue gas channel that connects to the heating furnace (9) via the second flue gas fan (15). The heating furnace (9) also has a flue gas channel that connects to the outside via the heat exchanger (8) and the heat source regenerator (1). The low-temperature heat exchanger (11) has a circulating working fluid channel that connects to the compressor (4). The second expander (5) has a circulating working fluid channel... After the regenerator (7) is connected to the compressor (4) through the intermediate port, the compressor (4) also has a circulating working fluid channel connected to the expander (3) through the heat exchanger (8) and the heating furnace (9). The expander (3) also has a circulating working fluid channel connected to the heater (10) and then splits into two paths - the first path is connected to the second expander (5) and the second path is connected to the regenerator (7). The regenerator (7) also has a circulating working fluid channel connected to the low-temperature heat exchanger (11) through the third expander (6). The heater (10) also has a heated medium channel connected to the outside. The low-temperature heat exchanger (11) also has a low-temperature heat medium channel connected to the outside. The expander (3), the second expander (5) and the third expander (6) are connected to the compressor (4) and transmit power. The smoke machine (14) and the second smoke machine (15) are connected to the air compressor (13) and transmit power, forming a catalyst regeneration energy recovery heat pump system.

6. The catalyst regeneration energy recovery heat pump system is a catalyst regeneration energy recovery heat pump system according to claim 5, wherein the heating furnace (9) is provided with a fuel channel connected to the outside to form the catalyst regeneration energy recovery heat pump system.

7. The catalyst regeneration energy recovery heat pump system is an auxiliary combustion chamber (12) added to the catalyst regeneration energy recovery heat pump system described in claim 5 or claim 6. The auxiliary combustion chamber (12) is connected to the external fuel channel. The coke-regeneration system (2) is adjusted to have a flue gas channel connected to the smoke machine (14) so ​​that the coke-regeneration system (2) has a flue gas channel connected to the auxiliary combustion chamber (12) and the auxiliary combustion chamber (12) has a flue gas channel connected to the smoke machine (14), thus forming the catalyst regeneration energy recovery heat pump system.

8. A catalyst regeneration energy recovery heat pump system is a catalyst regeneration energy recovery heat pump system according to any one of claims 1-7, wherein a second regenerator is added, the regenerator (7) is connected to the third expander (6) via a circulating working fluid channel, and the regenerator (7) is connected to the third expander (6) via a circulating working fluid channel through the second regenerator (16), and the low-temperature heat exchanger (11) is connected to the compressor (4) via a circulating working fluid channel through the second regenerator (16), thereby forming a catalyst regeneration energy recovery heat pump system.

9. A catalyst regeneration energy recovery heat pump system is a catalyst regeneration energy recovery heat pump system according to any one of claims 1-8, wherein a high-temperature regenerator (17) is added, the compressor (4) is connected to the heat exchanger (8) via a circulating working fluid channel, and the compressor (4) is connected to the heat exchanger (8) via the high-temperature regenerator (17), and the expander (3) is connected to the heater (10) via a circulating working fluid channel, and the expander (3) is connected to the heater (10) via the high-temperature regenerator (17), thereby forming a catalyst regeneration energy recovery heat pump system.

10. A catalyst regeneration energy recovery heat pump system is a catalyst regeneration energy recovery heat pump system according to any one of claims 1-8, wherein a high-temperature regenerator (17) is added, the compressor (4) is connected to the heat exchanger (8) via a circulating working fluid channel, and the compressor (4) is connected to the heat exchanger (8) via the high-temperature regenerator (17), and the expander (3) is connected to the heater (10) via a circulating working fluid channel, and the expander (3) is connected to itself via the high-temperature regenerator (17), and then the expander (3) is connected to the heater (10) via a circulating working fluid channel, thereby forming a catalyst regeneration energy recovery heat pump system.

11. A catalyst regeneration energy recovery heat pump system is formed by adding an expansion speed increaser (18) to replace the expander (3), adding a dual-energy compressor (19) to replace the compressor (4), adding a second expansion speed increaser (20) to replace the second expander (5), and adding a third expansion speed increaser (21) to replace the third expander (6) in any of the catalyst regeneration energy recovery heat pump systems described in claims 1-10.

Images