Solid-state cold and hot ammonia combined cycle system driven by low-temperature heat source and operation method

Abstract

According to the solid-state cold and hot ammonia combined cycle system driven by the low-temperature heat source and the operation method, waste heat is guided into the ammonia storage part, the middle transmission part and the ammonia supply part through the industrial waste heat conduction part, adsorption and release of ammonia gas are promoted, recycling and reusing of the industrial waste heat are fully achieved, the external energy consumption requirement is reduced, and the energy consumption is reduced. And the overall energy conversion efficiency of the system is improved. The system adopts multi-stage cascade adsorption: ammonia gas output by an ammonia storage part is adsorbed again in a middle transfer part, and then is output to a cold / heat supply part through the middle transfer part; ammonia gas output by the ammonia storage part is re-adsorbed in the ammonia supply part and then is output to the application unit through the ammonia supply part, so that adsorption reactions in different stages are carried out at low temperature, a low-grade heat source is fully utilized, the requirement for the temperature of the heat source is lowered, energy consumption in the ammonia gas regeneration process is reduced, and the economical efficiency is improved; therefore, the economical efficiency of the ammonia adsorption system is improved on the whole, and the problem that an existing ammonia adsorption scheme is poor in economical efficiency is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ammonia adsorption, in particular to a low-temperature heat source driven solid-state cold and hot ammonia combined cycle system and operation method. BACKGROUND

[0002] With the increasing severity of global climate change, with the adjustment of global energy structure, the proportion of clean energy in the energy system of various countries is increasing. Ammonia, as a clean energy carrier, has the advantages of no carbon emission, high energy density, etc., and is concerned in the transformation of global energy structure. In recent years, the application research of ammonia energy in power generation, power propulsion, fuel cell and other fields has made remarkable progress, showing its great potential in the fields of electric power, transportation, industry and other fields, and is an important choice to achieve the goal of carbon neutralization. However, the traditional ammonia storage method mostly depends on liquid ammonia storage technology, which needs to reach-33 oC at atmospheric pressure or 11.7 bar at room temperature 30 oC, and the technical requirements are high. At the same time, the corrosion and volatility of ammonia, as well as its strict storage requirements and flash evaporation phenomenon, lead to the risk of leakage and toxicity to the human body, causing safety hazards, and restricting the further promotion and popularization of ammonia energy.

[0003] Compared with the traditional ammonia storage method, the solid-state adsorption ammonia storage technology has developed into a promising alternative to liquid storage. This technology uses complexation, chemical or physical adsorption principles to safely store and control the release of ammonia at moderate temperature and pressure conditions, with higher safety and energy efficiency. In addition, adsorption ammonia storage also shows broad application prospects in refrigeration, heat pump and thermal management. However, the release and regeneration process of ammonia in the solid-state adsorption ammonia storage technology has a large energy loss, and it depends too much on high-temperature heat sources, so the overall energy efficiency is low. In addition, there is no solution on the market that effectively combines adsorption ammonia storage technology, ammonia-based refrigeration heat pump technology and ammonia energy utilization technology, resulting in the inability to achieve overall collaborative optimization of ammonia energy storage and utilization process. If these technical problems can be solved, the overall application efficiency of ammonia energy will be significantly improved, and the wide application of ammonia energy in various fields will be promoted. SUMMARY

[0004] In view of the defects in the prior art, the purpose of the present application is to provide a low-temperature heat source driven solid-state cold and hot ammonia combined cycle system and operation method.

[0005] The low-temperature heat source driven solid-state cold and hot ammonia combined cycle system provided by the present application comprises: The ammonia storage part is used for receiving and storing ammonia gas, and its output end is connected with the intermediate transfer part and the ammonia supply part. The intermediate transfer section has its input end connected to the output end of the ammonia storage section and the output end of the hot and cold supply section, respectively. It is used to adsorb and temporarily store the ammonia gas released by the ammonia section or the hot and cold supply section, and its output end is connected to the input end of the hot and cold supply section. The hot and cold supply unit has its input end connected to the output end of the intermediate transfer unit. It is used to adsorb and temporarily store the ammonia gas released by the intermediate transfer unit. Its output end is connected to the input end of the intermediate transfer unit and the application unit, and generates hot and cold heat during the adsorption of ammonia gas. The ammonia supply unit has its input end connected to the output end of the ammonia storage unit. It is used to adsorb and temporarily store the ammonia gas released from the ammonia unit, and its output end is connected to the application unit. Application unit, used to receive ammonia gas released from the cold and heat supply unit or the ammonia supply unit and to perform subsequent applications; The heat / cold conduction section is connected to the heat / cold supply section and is used to receive the heat / cold generated by the heat / cold supply section.

[0006] Preferably, it further includes a first buffer container and a second buffer container; The input end of the first buffer container is connected to the output end of the ammonia storage section, and the output end of the first buffer container is connected to the air inlet end of the intermediate transfer section and the input end of the ammonia supply section. The input end of the second buffer container is connected to the output end of the hot and cold supply unit and the output end of the ammonia supply unit, and the output end of the second buffer container is connected to the input end of the application unit.

[0007] Preferably, the ammonia storage section includes at least one ammonia storage device; The output end of each of the ammonia storage devices is connected to the input end of the first buffer container. Each of the ammonia storage devices is provided with an ammonia storage device output check valve at its output end, and an ammonia storage exhaust valve is provided at the output end of the ammonia storage section.

[0008] Preferably, the intermediate transfer section includes at least two intermediate transfer devices; Each of the intermediate transfer devices is connected to the output of the first buffer container. The output of the first buffer container is provided with a first buffer container output check valve. Each of the intermediate transfer devices is provided with an intermediate transfer air inlet valve at its air inlet. The circulation input end of each intermediate transfer device is connected to the output end of the hot and cold supply device, and the circulation input end of each intermediate transfer device is provided with an intermediate transfer circulation inlet valve. The output end of each intermediate transfer device is connected to the input end of the hot and cold supply device, and the output end of each intermediate transfer device is provided with an intermediate transfer device output check valve.

[0009] Preferably, the heating and cooling supply section includes at least two heating and cooling supply devices; The input end of each cold-heat supply device is connected with the output end of the intermediate transmission device, and a cold-heat supply inlet valve is arranged at the input end of each cold-heat supply device; The output end of each cold-heat supply device is connected with the input end of the second buffer container and the circulating input end of the intermediate transmission device, and a cold-heat supply device output one-way valve is arranged at the output end of each cold-heat supply device, and a cold-heat supply part exhaust valve is arranged at the output end of the cold-heat supply part.

[0010] Preferably, the ammonia supply part comprises at least two ammonia supply devices; The input end of each ammonia supply device is connected with the output end of the first buffer container, and an ammonia supply inlet valve is arranged at the input end of each ammonia supply device; The output end of each ammonia supply device is connected with the input end of the second buffer container, and an ammonia supply device output one-way valve is arranged at the output end of each ammonia supply device, and an ammonia supply part exhaust valve is arranged at the output end of the ammonia supply part. A second buffer container output one-way valve is arranged at the output end of the second buffer container, and an application unit inlet valve is arranged at the input end of the application unit.

[0011] Preferably, the ammonia storage device, the intermediate transmission device, the cold-heat supply device and the ammonia supply device are all ammonia adsorption devices; The ammonia adsorption device comprises an input enrichment unit, a filling unit and an output enrichment unit arranged in sequence along the gas flow direction; The input end of the ammonia adsorption device is arranged on the input enrichment unit; The output end of the ammonia adsorption device is arranged on the output enrichment unit.

[0012] Preferably, the components filled in the filling unit include solid-state composite ammonia adsorbents and / or sulfidized expanded graphite, and the filling ratio mass ratio is 1:1-200:1; The solid-state composite ammonia adsorbent includes any one or more of halide materials in calcium chloride, manganese chloride, ammonium chloride, strontium chloride and sodium bromide which can react with ammonia to form a complex; The solid-state composite ammonia adsorbent is carried on any one or more of carbon-based materials, zeolite-based materials, mesoporous silica materials, metal-organic framework materials, covalent organic framework materials and hydrogen-bond organic framework materials by any one or more of impregnation, mechanical mixing, coprecipitation and in-situ growth.

[0013] Preferably, the ammonia storage part is provided with a first industrial waste heat exchange inlet and a first industrial waste heat exchange outlet for being connected with an industrial waste heat conduction part. The intermediate transmission part is provided with a second industrial waste heat exchange inlet and a second industrial waste heat exchange outlet for conducting with the industrial waste heat conducting part; The ammonia supply part is provided with a third industrial waste heat exchange inlet and a third industrial waste heat exchange outlet for conducting with the industrial waste heat conducting part.

[0014] Preferably, the cold and heat supply part is provided with a cold and heat exchange inlet and a cold and heat exchange outlet for conducting with the cold and heat conducting part.

[0015] Preferably, the application unit is used for any one or more of fuel cells, ammonia power generating sets, ammonia combustion boilers, ammonia for denitration, fuel supply of power devices, decomposition of hydrogen, and ammonia for agricultural production.

[0016] The application provides a low-temperature heat source driven solid-state cold and heat ammonia combined cycle system operation method. The first working mode is that the industrial waste heat conducting part provides heat to the ammonia storage part to drive the ammonia storage part to release ammonia gas; the ammonia gas enters the intermediate transmission part and is adsorbed and temporarily stored by the intermediate transmission part; after the intermediate transmission part completes the temporary storage of the ammonia gas, the ammonia gas passage between the ammonia storage part and the intermediate transmission part is cut off. The second working mode is that the industrial waste heat conducting part provides heat to the intermediate transmission part to drive the intermediate transmission part to release ammonia gas; the ammonia gas enters the cold and heat supply part and is adsorbed and temporarily stored by the cold and heat supply part, and the cold and heat generated in the process that the cold and heat supply part adsorbs the ammonia gas is transported to the cold and heat conducting part; after the cold and heat supply part completes the temporary storage of the ammonia gas, the ammonia gas passage between the intermediate transmission part and the cold and heat supply part is cut off. The third working mode is that the cold and heat conducting part provides heat to the cold and heat supply part to drive the cold and heat supply part to release ammonia gas; the ammonia gas enters the application unit and is used by the application unit; after the cold and heat supply part completes the release of the ammonia gas, the ammonia gas passage between the cold and heat supply part and the application unit is cut off. The fourth working mode is that the industrial waste heat conducting part provides heat to the ammonia storage part to drive the ammonia storage part to release ammonia gas; the ammonia gas enters the ammonia supply part and is adsorbed and temporarily stored by the ammonia supply part; after the ammonia supply part completes the temporary storage of the ammonia gas, the ammonia gas passage between the ammonia storage part and the ammonia supply part is cut off. The fifth working mode is that the industrial waste heat conducting part provides heat to the ammonia supply part to drive the ammonia supply part to release ammonia gas; the ammonia gas enters the application unit and is used by the application unit; after the ammonia supply part completes the release of the ammonia gas, the ammonia gas passage between the ammonia supply part and the application unit is cut off. The sixth working mode is that the cold and heat supply part releases ammonia gas; the ammonia gas enters the intermediate transmission part and is adsorbed and temporarily stored by the intermediate transmission part; after the cold and heat supply part completes the release of the ammonia gas, the ammonia gas passage between the cold and heat supply part and the intermediate transmission part is cut off. After the ammonia storage part completes ammonia release, the ammonia output path of the ammonia storage part is cut off; after the application unit completes ammonia application, the ammonia input path of the application unit is cut off.

[0017] Compared with the prior art, the present application has the following beneficial effects: 1、The present application uses the industrial waste heat guide part to guide the waste heat into the ammonia storage part, the intermediate transfer part and the ammonia supply part, to promote the adsorption and release of ammonia, fully realizes the recycling and reuse of industrial waste heat, reduces the external energy consumption demand, and improves the overall energy conversion efficiency of the system. The multi-stage cascade adsorption is adopted, the ammonia gas output by the ammonia storage part is re-adsorbed in the intermediate transfer part, and then output to the cold and hot supply part; the ammonia gas output by the ammonia storage part is re-adsorbed in the ammonia supply part, and then output to the application unit, so that the adsorption reactions in different stages are carried out at a lower temperature, the lower grade heat source is fully utilized, thereby reducing the heat source temperature requirement, reducing the energy consumption in the ammonia regeneration process, improving the economy, thereby improving the economy of the ammonia adsorption system of the present embodiment as a whole, and solving the problem of poor economy of the existing ammonia adsorption scheme.

[0018] 2、The present application avoids the safety hazards that may occur during the storage and transportation of liquid ammonia by using the all-solid-state ammonia adsorption material, significantly improves the safety and stability of the system. The system integrates ammonia storage, release and cold and hot supply functions, and builds an integrated liquid ammonia-free cold-heat-ammonia supply and storage combined cycle system, realizing the adaptation of multiple application scenarios. Through multi-functional integrated design, the system can simultaneously meet the energy storage and supply requirements, improve the flexibility and efficiency of overall energy management, enhance the comprehensive utilization efficiency of energy, and solve the problem of single function and insufficient comprehensive application capability of the existing system. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only embodiments of the present application, and those skilled in the art can obtain other drawings according to the provided drawings without creating any creative labor. Other features, objects and advantages of the present application will become more apparent through reading the following detailed description of the non-limiting embodiments with reference to the accompanying drawings: Figure 1 FIG. 1 is a schematic diagram of a low-temperature heat source driven liquid ammonia-free cold-heat-ammonia supply and storage combined cycle system in the embodiments of the present application.

[0020] In the figure: 1 is an import pipe; 2 is an ammonia storage device; 2-1 is a first input enrichment unit; 2-2 is a first filling unit; 2-3 is a first output enrichment unit; 3 is a first buffer container; 4 is a first intermediate transfer device; 4-1 is a second input enrichment unit; 4-2 is a second filling unit; 4-3 is a second output enrichment unit; 5 is a second intermediate transfer device; 5-1 is a third input enrichment unit; 5-2 is a third filling unit; 5-3 is a third output enrichment unit; 6 is a first cold heat supply device; 6-1 is a fourth input enrichment unit; 6-2 is a fourth filling unit; 6-3 is a fourth output enrichment unit; 7 is a second cold heat supply device; 7-1 is a fifth input enrichment unit; 7-2 is a fifth filling unit; 7-3 is a fifth output enrichment unit; 8 is a first ammonia supply device; 8-1 is a sixth input enrichment unit; 8-2 is a sixth filling unit; 8-3 is a sixth output enrichment unit; 9 is a second ammonia supply device; 9-1 is a seventh input enrichment unit; 9-2 is a seventh filling unit; 9-3 is a seventh output enrichment unit; 10 is a second buffer container; 11 is an application unit; 12 is an ammonia storage device output one-way valve; 13 is an ammonia storage part exhaust valve; 14 is a first buffer container output one-way valve; 15 is a first intermediate transfer gas inlet valve; 16 is a first intermediate transfer device output one-way valve; 17 is a first cold heat supply inlet valve; 18 is a first cold heat supply device output one-way valve; 19 is a second intermediate transfer gas inlet valve; 20 is a second intermediate transfer device output one-way valve; 21 is a second cold heat supply inlet valve; 22 is a second cold heat supply device output one-way valve; 23 is a cold heat supply part exhaust valve; 24 is a first intermediate transfer circulation inlet valve; 25 is a second intermediate transfer circulation inlet valve; 26 is a first ammonia supply inlet valve; 27 is a first ammonia supply device output one-way valve; 28 is a second ammonia supply inlet valve; 29 is a second ammonia supply device output one-way valve; 30 is an ammonia supply part exhaust valve; 31 is a second buffer container output one-way valve; 32 is an application unit inlet valve; 33 is a first industrial waste heat heat exchange inlet; 34 is a first industrial waste heat heat exchange outlet; 35 is a second industrial waste heat heat exchange inlet; 36 is a second industrial waste heat heat exchange outlet; 37 is a cold heat exchange inlet; 38 is a cold heat exchange outlet; 39 is a third industrial waste heat heat exchange inlet; 40 is a third industrial waste heat heat exchange outlet. DETAILED DESCRIPTION

[0021] The application will be described in greater detail with reference to specific embodiments. The following examples are intended to further illustrate the application and are not intended to limit the scope of the application in any way. It should be noted that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the application. These all fall within the scope of the application.

[0022] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as "connected to" another component, it can be directly connected to or indirectly connected to that other component. Furthermore, a connection can be for both fixing and circuit connection purposes.

[0023] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of the present invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] Example 1 like Figure 1 As shown, in one embodiment, the low-temperature heat source driven solid-state cold-heat-ammonia combined cycle system provided by the present invention includes an ammonia storage section, an intermediate transfer section, a cold and heat supply section, an ammonia supply section, an application unit 11, an industrial waste heat conduction section, and a cold and heat conduction section.

[0026] The ammonia storage unit has its input end connected to the inlet pipe 1 for receiving ammonia gas.

[0027] The air inlet of the intermediate transfer section is connected to the output of the ammonia storage section, the circulation inlet of the intermediate transfer section is connected to the output of the hot and cold supply section, and the output of the intermediate transfer section is connected to the inlet of the hot and cold supply section. This section is used to receive ammonia gas released from the ammonia storage unit, adsorb the ammonia gas, and temporarily store it. The input of the hot and cold supply section is connected to the output of the intermediate transfer section, and the output of the hot and cold supply section is connected to the application unit 11 and the circulation inlet of the intermediate transfer section. This section is used to receive ammonia gas passed through the intermediate transfer section, adsorb the ammonia gas, and temporarily store it. The input of the ammonia supply section is connected to the output of the ammonia storage unit, and the output of the ammonia supply section is connected to the input of the application unit 11. This section is used to receive ammonia gas released from the ammonia storage unit, adsorb the ammonia gas, and temporarily store it.

[0028] The input end of the application unit 11 is connected with the output end of the ammonia supply part and the output end of the cold-heat supply part, and is used for subsequent application of ammonia gas. The industrial waste heat guide part is connected to the ammonia storage part, the intermediate transfer part and the ammonia supply part respectively, and is used for providing heat to the ammonia storage part, the intermediate transfer part and the ammonia supply part.

[0029] The cold-heat guide part is connected to the cold-heat supply part, and is used for receiving the cold heat generated by the cold-heat supply part.

[0030] In this embodiment, the industrial waste heat guide part is used to guide waste heat into the ammonia storage part, the intermediate transfer part and the ammonia supply part, so as to promote the adsorption and release of ammonia gas, and fully realize the recycling and reuse of industrial waste heat, reduce the external energy consumption demand, and improve the overall energy conversion efficiency of the system. The system adopts a multi-stage cascade adsorption: the ammonia gas output by the ammonia storage part is re-adsorbed in the intermediate transfer part and then output to the cold-heat supply part from the intermediate transfer part; the ammonia gas output by the ammonia storage part is re-adsorbed in the ammonia supply part and then output to the application unit 11 from the ammonia supply part, so that the adsorption reactions in different stages are carried out at a lower temperature, the lower grade heat source is fully utilized, the heat source temperature demand is reduced, the energy consumption in the ammonia regeneration process is reduced, and the economy is improved, thereby improving the economy of the ammonia adsorption carbon capture system as a whole and solving the problem of poor economy of the existing ammonia adsorption scheme.

[0031] Meanwhile, by using the all-solid-state ammonia adsorption material, the safety hazards that may occur during the storage and transportation of liquid ammonia are avoided, and the safety and stability of the system are significantly improved. The system integrates the storage, release and cold-heat supply functions of ammonia, and builds an integrated liquid-ammonia-free cold-heat-ammonia supply and storage combined cycle system, realizing the adaptation to multiple application scenarios. Through multi-functional integrated design, the system can simultaneously meet the energy storage and supply demands, improve the flexibility and efficiency of overall energy management, enhance the comprehensive utilization efficiency of energy, and solve the problem of single function and insufficient comprehensive application capability of the existing system.

[0032] The specific structure of the low-temperature heat source driven liquid-ammonia-free cold-heat-ammonia supply and storage combined cycle system of this embodiment will be further described below (for example, the ammonia storage part includes one device, and the intermediate transfer part, the cold-heat supply part and the ammonia supply part each include two devices): In this embodiment, the low-temperature heat source driven liquid-ammonia-free cold-heat-ammonia supply and storage combined cycle system can further include a first buffer container 3 and a second buffer container 10.

[0033] The input end of the first buffer container 3 is communicated with the output end of the ammonia storage part, the output end of the first buffer container 3 is communicated with the gas input end of the intermediate transfer part and the input end of the ammonia supply part, for stable pressure regulation and control in the input process. The input end of the second buffer container 10 is communicated with the output end of the cold and hot supply part and the output end of the ammonia supply part, the output end of the second buffer container 10 is communicated with the input end of the application unit 11, for stable pressure regulation and control in the output process.

[0034] In the embodiment, the ammonia storage part can specifically include an ammonia storage device 2.

[0035] The output end of the ammonia storage device 2 is communicated with the input end of the first buffer container 3 through a pipeline; the output end of the ammonia storage device 2 is provided with an ammonia storage device output check valve 12, and the input end of the ammonia storage part is provided with an ammonia storage part exhaust valve 13.

[0036] Further, the intermediate transfer part includes a first intermediate transfer device 4 and a second intermediate transfer device 5.

[0037] The gas input end of the first intermediate transfer device 4 and the second intermediate transfer device 5 is communicated with the output end of the first buffer container 3 through a pipeline; the output end of the first buffer container 3 is provided with a first buffer container output check valve 14, and the gas input end of the first intermediate transfer device 4 and the second intermediate transfer device 5 is respectively provided with a first intermediate transfer gas inlet valve 15 and a second intermediate transfer gas inlet valve 19.

[0038] The circulation input end of the first intermediate transfer device 4 and the second intermediate transfer device 5 is communicated with the output end of the cold and hot supply device through a pipeline; the circulation input end of the first intermediate transfer device 4 and the second intermediate transfer device 5 is respectively provided with a first intermediate transfer circulation inlet valve 24 and a second intermediate transfer circulation inlet valve 25.

[0039] The output end of the first intermediate transfer device 4 and the second intermediate transfer device 5 is communicated with the input end of the cold and hot supply device through a pipeline; the output end of the first intermediate transfer device 4 and the second intermediate transfer device 5 is respectively provided with a first intermediate transfer device output check valve 16 and a second intermediate transfer device output check valve 20.

[0040] Further, the cold and hot supply part includes a first cold and hot supply device 6 and a second cold and hot supply device 7.

[0041] The input end of the first cold and hot supply device 6 and the second cold and hot supply device 7 is communicated with the output end of the intermediate transfer device through a pipeline; the input end of the first cold and hot supply device 6 and the second cold and hot supply device 7 is respectively provided with a first cold and hot supply inlet valve 17 and a second cold and hot supply inlet valve 21.

[0042] The output ends of the first cold-heat supply device 6 and the second cold-heat supply device 7 are connected with the input end of the second buffer container 10 and the circulating input end of the intermediate transmission device through pipelines; the output ends of the first cold-heat supply device 6 and the second cold-heat supply device 7 are respectively provided with a first cold-heat supply device output check valve 18 and a second cold-heat supply device output check valve 22, and the output end of the cold-heat supply part is provided with a cold-heat supply part exhaust valve 23.

[0043] Further, the ammonia supply part includes a first ammonia supply device 8 and a second ammonia supply device 9.

[0044] The input ends of the first ammonia supply device 8 and the second ammonia supply device 9 are connected with the output end of the first buffer container 3 through pipelines; the input ends of the first ammonia supply device 8 and the second ammonia supply device 9 are respectively provided with a first ammonia supply inlet valve 26 and a second ammonia supply inlet valve 28.

[0045] The output ends of the first ammonia supply device 8 and the second ammonia supply device 9 are connected with the input end of the second buffer container 10; the output ends of the first ammonia supply device 8 and the second ammonia supply device 9 are respectively provided with a first ammonia supply device output check valve 27 and a second ammonia supply device output check valve 29, the output end of the ammonia supply part is provided with an ammonia supply part exhaust valve 30, the output end of the second buffer container 10 is provided with a second buffer container output check valve 31, and the input end of the application unit 11 is provided with an application unit inlet valve 32.

[0046] The operation process of the low-temperature heat source driven liquid-free ammonia cold-heat-ammonia supply and storage combined cycle system of the embodiment will be described below: After the ammonia gas enters the inlet pipe 1, it is adsorbed in the ammonia storage device 2 and temporarily stored in the ammonia storage device 2. The ammonia released in the ammonia storage device 2 enters the first buffer container 3 for pressure stabilization, and the ammonia gas output from the first buffer container output check valve 14 is divided into four paths.

[0047] The first path enters the first intermediate transmission device 4 through the first intermediate transmission gas inlet valve 15 and is adsorbed and temporarily stored. When released, it is output from the first intermediate transmission device output check valve 16, enters the first cold-heat supply device 6 through the first cold-heat supply inlet valve 17 and is adsorbed, and then the released ammonia gas is output from the first cold-heat supply device output check valve 18.

[0048] The second route of the second intermediate transfer inlet valve 19 enters the second intermediate transfer device 5 and is adsorbed and temporarily stored. When released, it is output by the second intermediate transfer device output check valve 20, enters the second cold heat supply device 7 through the second cold heat supply inlet valve 21 and is adsorbed, and then the released ammonia gas is output by the second cold heat supply device output check valve 22. The ammonia gas output by the first cold heat supply device output check valve 18 and the second cold heat supply device output check valve 22 both enter the second buffer container 10 through the cold heat supply exhaust valve 23 for pressure stabilization, and then, after being output by the second buffer container output check valve 31, they enter the application unit 11 through the application unit inlet valve 32 for subsequent application.

[0049] The third route enters the first ammonia supply device 8 through the first ammonia supply inlet valve 26 and is adsorbed and temporarily stored. When released, it is output by the first ammonia supply device output check valve 27.

[0050] The fourth route enters the second ammonia supply device 9 through the second ammonia supply inlet valve 28 and is adsorbed and temporarily stored. When released, it is output by the second ammonia supply device output check valve 29. The ammonia gas output by the first ammonia supply device output check valve 27 and the second ammonia supply device output check valve 29 both enter the second buffer container 10 through the ammonia supply exhaust valve 30 for pressure stabilization, and then, after being output by the second buffer container output check valve 31, they enter the application unit 11 through the application unit inlet valve 32 for subsequent application.

[0051] In addition, the intermediate transfer part and the cold heat supply part can operate independently of the ammonia storage part and the ammonia supply part: the ammonia gas released by the first intermediate transfer device 4 is output by the first intermediate transfer device output check valve 16, enters the first cold heat supply device 6 through the first cold heat supply inlet valve 17 and is adsorbed, and then the released ammonia gas is output by the first cold heat supply device output check valve 18 and reenters the first intermediate transfer device 4 through the first intermediate transfer cycle inlet valve 24 and is adsorbed; the ammonia gas released by the second intermediate transfer device 5 is output by the second intermediate transfer device output check valve 20, enters the second cold heat supply device 7 through the second cold heat supply inlet valve 21 and is adsorbed, and then the released ammonia gas is output by the second cold heat supply device output check valve 22 and reenters the first intermediate transfer device 5 through the second intermediate transfer cycle inlet valve 25 and is adsorbed.

[0052] In this embodiment, the ammonia storage device 2, the first intermediate transfer device 4, the second intermediate transfer device 5, the first cold heat supply device 6, the second cold heat supply device 7, the first ammonia supply device 8, and the second ammonia supply device 9 are all ammonia adsorption devices.

[0053] The ammonia adsorption device comprises an input enrichment unit, a filling unit and an output enrichment unit arranged in sequence along the gas flow direction. The input enrichment unit is provided with an input end of the ammonia adsorption device. The output enrichment unit is provided with an output end of the ammonia adsorption device. The ammonia storage device 2 comprises a first input enrichment unit 2-1, a first filling unit 2-2 and a first output enrichment unit 2-3. The first intermediate transfer device 4 comprises a second input enrichment unit 4-1, a second filling unit 4-2 and a second output enrichment unit 4-3. The second intermediate transfer device 5 comprises a third input enrichment unit 5-1, a third filling unit 5-2 and a third output enrichment unit 5-3. The first cold heat supply device 6 comprises a fourth input enrichment unit 6-1, a fourth filling unit 6-2 and a fourth output enrichment unit 6-3. The second cold heat supply device 7 comprises a fifth input enrichment unit 7-1, a fifth filling unit 7-2 and a fifth output enrichment unit 7-3. The first ammonia supply device 8 comprises a sixth input enrichment unit 8-1, a sixth filling unit 8-2 and a sixth output enrichment unit 8-3. The second ammonia supply device 9 comprises a seventh input enrichment unit 9-1, a seventh filling unit 9-2 and a seventh output enrichment unit 9-3.

[0054] The components filled in the filling unit include solid-state composite ammonia adsorbent and or sulfidized expanded graphite, and the filling ratio of the mass is 1:1-200:1. The solid-state composite ammonia adsorbent includes any one or more of halide materials such as calcium chloride, manganese chloride, ammonium chloride, strontium chloride and sodium bromide which can react with ammonia to form a complex, and is carried on any one or more of carbon-based materials, zeolite-based materials, mesoporous silica materials, metal organic framework materials, covalent organic framework materials and hydrogen-bond organic framework materials by any one or more of methods such as impregnation, mechanical mixing, coprecipitation and in-situ growth.

[0055] The first filling unit 2-2 can use sulfidized expanded graphite composite adsorption material impregnated with manganese chloride. Optimally, the mass ratio of manganese chloride to sulfidized expanded graphite is 4:1.

[0056] The second filling unit 4-2, the third filling unit 5-2, the sixth filling unit 8-2 and the seventh filling unit 9-2 can use sulfidized expanded graphite composite adsorption material impregnated with calcium chloride. Optimally, the mass ratio of calcium chloride to sulfidized expanded graphite is 4:1.

[0057] The fourth filling unit 6-2 and the fifth filling unit 7-2 can use sulfidized expanded graphite composite adsorption material impregnated with ammonium chloride or sodium bromide. Optimally, the mass ratio of ammonium chloride or sodium bromide to sulfidized expanded graphite is 4:1.

[0058] In the embodiment, the ammonia storage device can be provided with a first industrial waste heat exchange inlet 33 and a first industrial waste heat exchange outlet 34 in communication with the industrial waste heat portion. The intermediate transfer device can be provided with a second industrial waste heat exchange inlet 35 and a second industrial waste heat exchange outlet 36 in communication with the industrial waste heat portion. The cold heat supply device can be provided with a cold heat exchange inlet 37 and a cold heat exchange outlet 38 in communication with the cold heat conduction portion. The ammonia supply device can be provided with a third industrial waste heat exchange inlet 39 and a third industrial waste heat exchange outlet 40 in communication with the industrial waste heat portion. That is, the heat exchange connection between the heat exchange waste heat conduction portion and the ammonia storage device, the intermediate transfer device, and the ammonia supply device; the cold heat conduction portion and the cold heat supply device are in the form of heat exchange connection.

[0059] In the embodiment, the application unit 11 is used for any one or more of fuel cells, ammonia power units, ammonia combustion boilers, ammonia for denitration, fuel supply of power devices, decomposition of hydrogen, and agricultural production of ammonia. As an embodiment of the present application, the application unit 11 uses fuel cells, fuel supply of ammonia power devices, and engine exhaust denitration.

[0060] In the embodiment, the present application provides a running method for the low-temperature heat source driven liquid-free ammonia cold-heat-ammonia supply and storage combined cycle system in the above-mentioned embodiment one, as follows: First working mode: open the ammonia storage portion exhaust valve 13 and the first intermediate transfer inlet valve 15 and / or the second intermediate transfer inlet valve 19, and at the same time, use the heat of the industrial waste heat conduction portion to heat the ammonia storage device 2, so that the ammonia in the first filling unit 2-2 is released and enters the first intermediate transfer device 4 and / or the second intermediate transfer device 5 and is temporarily stored; After storage is completed, the first intermediate transfer inlet valve 15 and / or the second intermediate transfer inlet valve 19 are closed.

[0061] Second working mode: open the first cold heat supply inlet valve 17 and / or the second cold heat supply inlet valve 21, and at the same time, use the heat of the industrial waste heat conduction portion to heat the first intermediate transfer device 4 and / or the second intermediate transfer device 5, so that the ammonia gas temporarily stored in the second filling unit 4-2 and / or the third filling unit 5-2 is released and enters the first cold heat supply device 6 and / or the second cold heat supply device 7 and is temporarily stored; After storage is completed, the first cold heat supply inlet valve 17 and / or the second cold heat supply inlet valve 21 are closed.

[0062] Third working mode: open the cold heat supply portion exhaust valve 23 and the application unit inlet valve 32, and at the same time, use the heat of the cold heat conduction portion to heat the first cold heat supply device 6 and / or the second cold heat supply device 7, so that the ammonia gas temporarily stored in the fourth filling unit 6-2 and / or the fifth filling unit 7-2 is released and enters the application unit 11; After the release is completed, the cold and heat supply part exhaust valve 23 is closed.

[0063] The fourth working mode: the ammonia storage part exhaust valve 13 and the first ammonia supply inlet valve 26 and or the second ammonia supply inlet valve 28 are opened, and the first filling unit 2-2 is heated by the heat of the industrial waste heat conduction part, so that the ammonia in the first filling unit 2-2 is released and temporarily stored in the first ammonia supply device 8 and or the second ammonia supply device 9; After the storage is completed, the first ammonia supply inlet valve 26 and or the second ammonia supply inlet valve 28 are closed.

[0064] The fifth working mode: the ammonia supply part exhaust valve 30 and the application unit inlet valve 32 are opened, and the first ammonia supply device 8 and or the second ammonia supply device 9 are heated by the heat of the industrial waste heat conduction part, so that the ammonia temporarily stored in the sixth filling unit 8-2 and or the seventh filling unit 9-2 is released and enters the application unit 11; After the release is completed, the ammonia supply part exhaust valve 30 is closed.

[0065] The sixth working mode: the first intermediate transfer cycle inlet valve 24 and or the second intermediate transfer cycle inlet valve 25 are opened, so that the ammonia temporarily stored in the fourth filling unit 6-2 and or the fifth filling unit 7-2 is released and temporarily stored in the first intermediate transfer device 4 and or the second intermediate transfer device 5; After the release is completed, the first intermediate transfer cycle inlet valve 24 and or the second intermediate transfer cycle inlet valve 25 are closed.

[0066] After the release of the ammonia storage part is completed, the ammonia storage part exhaust valve 13 is closed; after the application of the application unit 11 is completed, the application unit inlet valve 32 is closed.

[0067] The low-temperature heat source driven liquid-free ammonia cold-heat-ammonia supply and storage combined cycle system of the embodiment has continuous operation and modular expansion capability of cold and heat demand and ammonia demand, and multiple complete sets of ammonia storage devices, intermediate transfer devices, cold and heat supply devices and ammonia supply devices are set up to realize simultaneous continuous and collaborative operation of the first to sixth working modes, and have integrated storage and placement technology for large cold and heat demand and ammonia demand.

[0068] The various embodiments described in this specification are intended to be illustrative of the invention and do not limit the scope of the invention. Although specific embodiments have been described in detail, various modifications can be made to these details without departing from the spirit or scope of the application. Accordingly, it is intended that all such alternatives, modifications and variations be included within the scope of the following claims. The claims are intended to cover all adoptions of the application in which a patented process, machine, manufacture, or composition of matter is practiced.

[0069] The specific embodiments of the present application have been described. It is to be understood that the application is not limited to the specific embodiments described and that various modifications made to the embodiments can be made without departing from the spirit or scope of the application.

Claims

1. A low temperature heat source driven solid state cold heat ammonia combined cycle system, characterized in that, The application relates to a device for ammonia storage and supply, which comprises the following parts: an ammonia storage part, an input end of which is used for receiving and storing ammonia, and an output end of which is connected with an intermediate transfer part and an ammonia supply part; the intermediate transfer part, input ends of which are connected with the output end of the ammonia storage part and the output end of the cold-heat supply part respectively, and which is used for adsorbing and temporarily storing ammonia released by the ammonia storage part or the cold-heat supply part, and an output end of which is connected with the input end of the cold-heat supply part; the cold-heat supply part, an input end of which is connected with the output end of the intermediate transfer part, and which is used for adsorbing and temporarily storing ammonia released by the intermediate transfer part, and output ends of which are connected with the input end of the intermediate transfer part and an application unit respectively, and which generates cold-heat during the adsorption of ammonia; the ammonia supply part, an input end of which is connected with the output end of the ammonia storage part, and which is used for adsorbing and temporarily storing ammonia released by the ammonia storage part, and an output end of which is connected with the application unit; the application unit, which is used for receiving ammonia released by the cold-heat supply part or the ammonia supply part and carrying out subsequent application; the cold-heat conduction part, which is connected with the cold-heat supply part and is used for receiving cold-heat generated by the cold-heat supply part.

2. The low temperature heat source driven solid state cold heat ammonia combined cycle system of claim 1, wherein, The device further comprises a first buffer container and a second buffer container; an input end of the first buffer container is connected with the output end of the ammonia storage part, and an output end of the first buffer container is connected with the gas input end of the intermediate transfer part and the input end of the ammonia supply part; an input end of the second buffer container is connected with the output end of the cold-heat supply part and the output end of the ammonia supply part, and an output end of the second buffer container is connected with the input end of the application unit.

3. The low temperature heat source driven solid state cold and heat ammonia combined cycle system of claim 2, wherein, The ammonia storage part comprises at least one ammonia storage device; an output end of each of the ammonia storage devices is connected with the input end of the first buffer container, and an ammonia storage device output one-way valve is arranged at the output end of each of the ammonia storage devices, and an ammonia storage part exhaust valve is arranged at the output end of the ammonia storage part.

4. The low temperature heat source driven solid state cold and heat ammonia combined cycle system of claim 3, wherein, The intermediate transfer part comprises at least two intermediate transfer devices; a gas input end of each of the intermediate transfer devices is connected with the output end of the first buffer container, and a first buffer container output one-way valve is arranged at the output end of the first buffer container, and an intermediate transfer gas inlet valve is arranged at the gas input end of each of the intermediate transfer devices; a circulation input end of each of the intermediate transfer devices is connected with the output end of the cold-heat supply device, and an intermediate transfer circulation inlet valve is arranged at the circulation input end of each of the intermediate transfer devices; an output end of each of the intermediate transfer devices is connected with the input end of the cold-heat supply device, and an intermediate transfer device output one-way valve is arranged at the output end of each of the intermediate transfer devices.

5. The low temperature heat source driven solid state cold and heat ammonia combined cycle system of claim 4, wherein, The cold-heat supply part comprises at least two cold-heat supply devices; an input end of each of the cold-heat supply devices is connected with the output end of the intermediate transfer device, and a cold-heat supply inlet valve is arranged at the input end of each of the cold-heat supply devices; an output end of each of the cold-heat supply devices is connected with the input end of the second buffer container and the circulation input end of the intermediate transfer device, and a cold-heat supply device output one-way valve is arranged at the output end of each of the cold-heat supply devices, and a cold-heat supply part exhaust valve is arranged at the output end of the cold-heat supply part.

6. The low temperature heat source driven solid state cold and heat ammonia combined cycle system of claim 5, wherein, The ammonia supply part comprises at least two ammonia supply devices; An input end of each of the ammonia supply devices is connected to an output end of the first buffer container, and an ammonia supply inlet valve is arranged at the input end of each of the ammonia supply devices; An output end of each of the ammonia supply devices is connected to an input end of the second buffer container, and an ammonia supply device output check valve is arranged at the output end of each of the ammonia supply devices, and an ammonia supply part output exhaust valve is arranged at the output end of the ammonia supply part; An output end of the second buffer container is provided with a second buffer container output check valve, and an application unit inlet valve is arranged at an input end of the application unit.

7. The low temperature heat source driven solid state cold and heat ammonia combined cycle system of claim 6, wherein, The ammonia storage device, the intermediate transfer device, the cold and heat supply device, and the ammonia supply device are ammonia adsorption devices; The ammonia adsorption device comprises an input enrichment unit, a filling unit, and an output enrichment unit arranged in sequence along a gas flow direction; The input end of the ammonia adsorption device is arranged on the input enrichment unit; The output end of the ammonia adsorption device is arranged on the output enrichment unit.

8. The low temperature heat source driven solid state cold and heat ammonia combined cycle system of claim 7, wherein, The components filled in the filling unit include solid-state composite ammonia adsorbents and / or sulfidized expanded graphite, and the filling ratio mass ratio is 1:1-200:1; The solid-state composite ammonia adsorbent includes any one or more of halide materials that can react with ammonia, such as calcium chloride, manganese chloride, ammonium chloride, strontium chloride, and sodium bromide. The solid-state composite ammonia adsorbent is carried on any one or more of carbon-based materials, zeolite-based materials, mesoporous silica materials, metal-organic framework materials, covalent organic framework materials, and hydrogen-bond organic framework materials by any one or more of impregnation, mechanical mixing, coprecipitation, and in-situ growth.

9. The low temperature heat source driven solid state cold and heat ammonia combined cycle system of claim 1, wherein, The ammonia storage part is provided with a first industrial waste heat exchange inlet and a first industrial waste heat exchange outlet for conducting with the industrial waste heat conducting part; The intermediate transfer part is provided with a second industrial waste heat exchange inlet and a second industrial waste heat exchange outlet for conducting with the industrial waste heat conducting part; The ammonia supply part is provided with a third industrial waste heat exchange inlet and a third industrial waste heat exchange outlet for conducting with the industrial waste heat conducting part.

10. A method of operating a low temperature heat source driven solid state cold heat ammonia combined cycle system, characterized by, The low-temperature heat source driven solid-state cold and heat ammonia combined cycle system according to any one of claims 1-9 comprises the following working modes: In the first working mode, the industrial waste heat conducting part provides heat to the ammonia storage part to drive the ammonia storage part to release ammonia gas, the ammonia gas is adsorbed and temporarily stored by the intermediate transfer part after entering the intermediate transfer part, and the ammonia gas path between the ammonia storage part and the intermediate transfer part is cut off after the intermediate transfer part completes the temporary storage of the ammonia gas; In the second working mode, the industrial waste heat conducting part provides heat to the intermediate transfer part to drive the intermediate transfer part to release ammonia gas, the ammonia gas is adsorbed and temporarily stored by the cold and heat supply part after entering the cold and heat supply part, and the cold and heat generated during the adsorption of the ammonia gas by the cold and heat supply part is delivered to the cold and heat conducting part, and the ammonia gas path between the intermediate transfer part and the cold and heat supply part is cut off after the cold and heat supply part completes the temporary storage of the ammonia gas; In the third working mode, the cold and heat conducting part provides heat to the cold and heat supply part to drive the cold and heat supply part to release ammonia gas, the ammonia gas is used by the application unit after entering the application unit, and the ammonia gas path between the cold and heat supply part and the application unit is cut off after the cold and heat supply part completes the release of the ammonia gas. The fourth working mode is that the receiving industrial waste heat conduction part provides heat to the ammonia storage part to drive the ammonia storage part to release ammonia gas; the ammonia gas enters the ammonia supply part and is adsorbed and temporarily stored by the ammonia supply part; after the ammonia supply part completes the temporary storage of the ammonia gas, the ammonia gas passage between the ammonia storage part and the ammonia supply part is cut off; The fifth working mode is that the receiving industrial waste heat conduction part provides heat to the ammonia supply part to drive the ammonia supply part to release ammonia gas; the ammonia gas enters the application unit and is used by the application unit; after the ammonia supply part completes the release of the ammonia gas, the ammonia gas passage between the ammonia supply part and the application unit is cut off; The sixth working mode is that the cold and heat supply part releases ammonia gas, and the ammonia gas enters the intermediate transfer part and is adsorbed and temporarily stored by the intermediate transfer part; after the cold and heat supply part completes the release of the ammonia gas, the ammonia gas passage between the cold and heat supply part and the intermediate transfer part is cut off; After the ammonia storage part completes the release of the ammonia gas, the ammonia gas output passage of the ammonia storage part is cut off; after the application unit completes the application of the ammonia gas, the ammonia gas input passage of the application unit is cut off.

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