Novel environment-friendly low-power-consumption ammonia decomposition device
By using dual heat source decomposition technology and catalyst exothermic reaction in the ammonia decomposition device, the problem of high energy consumption of traditional ammonia decomposition furnaces is solved, efficient ammonia cracking and environmental protection benefits are achieved, and resource waste and environmental pollution are reduced.
Patent Information
- Application Number
- CN202420860476.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-24
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-04-24
AI Technical Summary
Traditional ammonia decomposition furnaces have high energy consumption, and economic and environmental benefits need to be improved. In the prior art, the heat required for ammonia decomposition mainly comes from internal heating devices, resulting in waste of resources and environmental pollution problems.
Design a new environmentally friendly low-power ammonia decomposition device. Through dual heat source decomposition technology, multiple preheating and heating are used by electric heater and external mixed gas, combined with the exothermic reaction of the catalyst, the efficient cracking of ammonia is achieved and energy reduction Consume and improve environmental protection benefits.
It realizes efficient cracking of ammonia, reduces the energy consumption of ammonia cracking device, improves economic and environmental benefits, and through the combination of dual heat source decomposition and catalyst exothermic reaction, resources are effectively saved and environmental performance is improved.
Smart Images
Figure CN222164823U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ammonia decomposition, in particular to a novel environment-friendly and low-power consumption ammonia decomposition device. Background Art
[0002] During the operation of a traditional ammonia decomposition furnace, after ammonia enters the ammonia decomposition furnace and passes through the cracking channel, it is heated to a specified temperature by the electric heating wire next to the cracking channel inside the cracking furnace. Then, under the joint action of the catalyst in the cracking channel, the ammonia is decomposed into nitrogen and hydrogen. Before entering the ammonia cracking furnace, a set of regenerators is usually set up to perform heat exchange between the outlet gas and the inlet gas, so as to achieve a certain degree of energy saving and consumption reduction.
[0003] For example, Chinese patent CN216997665U proposes an ammonia decomposer, wherein a liquid ammonia storage tank is provided at the upper left end of the mounting base, the liquid ammonia storage tank is connected to a vaporization device through a delivery pipeline, a preheating device is provided on the delivery pipeline, the vaporization device is connected to a heat exchanger device through an air supply pipeline, the heat exchanger device is connected to a decomposition furnace device through a gas supply pipeline, an air outlet pipeline is provided at the right end of the decomposition furnace device, a detection device and a valve are provided on the air outlet pipeline, and a return air pipeline is provided on the valve.
[0004] However, the heat required for the decomposition of ammonia in the above reaction all comes from internal heating devices, such as heat exchangers, which have high energy consumption, and the economic and environmental benefits need to be improved.
[0005] Based on this, the utility model designs a novel environmentally friendly and low-power consumption ammonia decomposition device to solve the above problems. Utility Model Content
[0006] In view of the above-mentioned shortcomings of the prior art, the utility model provides a novel environmentally friendly and low-power consumption ammonia decomposition device.
[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:
[0008] A novel environmentally friendly and low-power consumption ammonia decomposition device, comprising an ammonia cracking furnace;
[0009] The ammonia cracking furnace is connected to the electric heater through the eighth pipeline, the electric heater is connected to the second reheat furnace through the seventh pipeline, the second reheat furnace is connected to the first reheat furnace through the sixth pipeline, and the first reheat furnace is connected to external ammonia through the fifth pipeline;
[0010] The external mixed gas is connected to the ammonia cracking furnace through the third pipeline, and the ammonia cracking furnace is connected to the first reheat furnace through the first pipeline;
[0011] The ammonia cracking furnace is connected to the second heat recovery furnace through a second pipeline.
[0012] Furthermore, the first pipe and the third pipe are both provided with a cavity for storing the catalyst.
[0013] Furthermore, the first reheat furnace is connected to an external waste gas or waste liquid recovery device through a ninth pipeline.
[0014] Furthermore, the second reheat furnace is connected to an external nitrogen and hydrogen collecting device through a fourth pipeline.
[0015] Furthermore, the mixed gas may be a gas that can undergo an exothermic reaction, or a waste gas that carries heat.
[0016] The utility model has the following technical effects:
[0017] 1. In the utility model, when ammonia enters the first reheating furnace through the fifth pipeline for the first preheating, the ammonia temperature rises to 200°C, and the ammonia enters the second reheating furnace through the sixth pipeline for the second preheating, and the ammonia temperature rises to 400°C. The ammonia enters the electric heater through the seventh pipeline for supplementary heating, and the ammonia enters the ammonia cracking furnace through the eighth pipeline for heating and cracking, and the ammonia temperature rises to 800°C. The nitrogen and hydrogen generated after the cracking of the ammonia enter the second reheating furnace through the second pipeline to provide heat for the second reheating furnace. When the heat of the nitrogen and hydrogen is absorbed by the second reheating furnace, it is discharged through the fourth pipeline.
[0018] 2. In the utility model, the external mixed gas enters the ammonia cracking furnace through the third pipe to provide heat for the ammonia cracking furnace. After the external mixed gas heats the ammonia in the ammonia cracking furnace, there is still residual heat. The external mixed gas with residual heat enters the first reheat furnace through the first pipe to provide heat for the first preheating. The external mixed gas after absorbing the heat is discharged through the ninth pipe; thus, dual heat source decomposition of ammonia is achieved through the electric heater and the external mixed gas, which reduces energy consumption, saves resources, and effectively improves environmental protection and economic benefits.
[0019] 3. In the utility model, when the pre-configured mixed gas enters the first pipe and the third pipe and contacts the catalyst pre-placed in the channel, an exothermic reaction occurs and heat is released to the ammonia cracking furnace. While being environmentally friendly, it can effectively save the energy consumption of the ammonia cracking device and fully release the economic value of the ammonia cracking device. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0021] Figure 1 This is a structural schematic diagram of a novel environmentally friendly, low-power consumption ammonia decomposition device of the utility model.
[0022] The numbers in the figure represent:
[0023] 1. First reheating furnace; 2. Second reheating furnace; 3. Electric heater; 4. First pipeline; 5. Second pipeline; 6. Third pipeline; 7. Fourth pipeline; 8. Fifth pipeline; 9. Sixth pipeline; 10. Seventh pipeline; 11. Eighth pipeline; 12. Ninth pipeline. DETAILED DESCRIPTION
[0024] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0025] The utility model is further described below in conjunction with embodiments.
[0026] Example 1
[0027] Please refer to the instruction manual Figure 1 , a new type of environmentally friendly and low-power consumption ammonia decomposition device, including an ammonia cracking furnace;
[0028] The ammonia cracking furnace is connected to the electric heater 3 through the eighth pipeline 11, the electric heater 3 is connected to the second reheat furnace 2 through the seventh pipeline 10, the second reheat furnace 2 is connected to the first reheat furnace 1 through the sixth pipeline 9, and the first reheat furnace 1 is connected to external ammonia through the fifth pipeline 8;
[0029] The external mixed gas is connected to the ammonia cracking furnace through the third pipeline 6, and the ammonia cracking furnace is connected to the first reheat furnace 1 through the first pipeline 4;
[0030] The ammonia cracking furnace is connected to the second regenerator 2 via a second pipeline 5;
[0031] The first pipe 4 and the third pipe 6 are both provided with a cavity for storing the catalyst;
[0032] The first reheat furnace 1 is connected to an external waste gas or waste liquid recovery device through a ninth pipeline 12;
[0033] The second regenerator 2 is connected to an external nitrogen and hydrogen collecting device via a fourth pipeline 7;
[0034] When ammonia enters the first reheating furnace 1 through the fifth pipeline 8 for the first preheating, the ammonia temperature rises to 200°C at this time, and the ammonia enters the second reheating furnace 2 through the sixth pipeline 9 for the second preheating, and the ammonia temperature rises to 400°C at this time, and the ammonia enters the electric heater 3 through the seventh pipeline 10 for supplementary heating, and the ammonia enters the ammonia cracking furnace through the eighth pipeline 11 for heating and cracking, and the ammonia temperature rises to 800°C at this time, and the nitrogen and hydrogen generated after the cracking of the ammonia enter the second reheating furnace 2 through the second pipeline 5 to provide heat for the second reheating furnace 2, and when the heat of the nitrogen and hydrogen is absorbed by the second reheating furnace 2, it is discharged through the fourth pipeline 7;
[0035] The external mixed gas enters the ammonia cracking furnace through the third pipeline 6 to provide heat for the ammonia cracking furnace. After the external mixed gas heats the ammonia in the ammonia cracking furnace, there is still residual heat. The external mixed gas with residual heat enters the first reheat furnace 1 through the first pipeline 4 to provide heat for the first preheating. The external mixed gas after absorbing the heat is discharged through the ninth pipeline 12; thus, dual heat source decomposition of ammonia is achieved through the electric heater 3 and the external mixed gas, which reduces energy consumption, saves resources, and effectively improves environmental protection benefits and economic benefits.
[0036] Example 2
[0037] like Figure 1 As shown, as a preferred embodiment of the utility model, the mixed gas can be selected from a gas that can undergo an exothermic reaction, or a waste gas that carries heat;
[0038] When the pre-configured mixed gas enters the first pipe 4 and the third pipe 6 and contacts the catalyst pre-placed in the channel, an exothermic reaction occurs and heat is released to the ammonia cracking furnace. While being environmentally friendly, it can effectively save the energy consumption of the ammonia cracking device and fully release the economic value of the ammonia cracking device.
[0039] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A new type of environmentally friendly and low-power consumption ammonia decomposition device, including an ammonia cracking furnace, characterized in that: The ammonia cracking furnace is connected to the electric heater (3) via an eighth pipeline (11), the electric heater (3) is connected to the second reheat furnace (2) via a seventh pipeline (10), the second reheat furnace (2) is connected to the first reheat furnace (1) via a sixth pipeline (9), and the first reheat furnace (1) is connected to external ammonia via a fifth pipeline (8); The external mixed gas is connected to the ammonia cracking furnace through a third pipeline (6), and the ammonia cracking furnace is connected to the first reheat furnace (1) through a first pipeline (4); The ammonia cracking furnace is connected to the second reheat furnace (2) via a second pipeline (5).
2. The novel environmentally friendly and low-power consumption ammonia decomposition device according to claim 1 is characterized in that: The first pipe (4) and the third pipe (6) are both provided with cavities for storing catalysts.
3. The novel environmentally friendly and low-power consumption ammonia decomposition device according to claim 2 is characterized in that: The first reheat furnace (1) is connected to an external waste gas or waste liquid recovery device via a ninth pipeline (12).
4. The novel environmentally friendly and low-power consumption ammonia decomposition device according to claim 3 is characterized in that: The second reheat furnace (2) is connected to an external nitrogen and hydrogen collecting device via a fourth pipeline (7).
5. The novel environmentally friendly and low-power consumption ammonia decomposition device according to claim 4 is characterized in that: The mixed gas may be a gas capable of undergoing an exothermic reaction, or a waste gas carrying heat.