CN115215353A - Integrated continuous ammonia production system under mild condition - Google Patents

Integrated continuous ammonia production system under mild condition Download PDF

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Publication number
CN115215353A
CN115215353A CN202210972039.4A CN202210972039A CN115215353A CN 115215353 A CN115215353 A CN 115215353A CN 202210972039 A CN202210972039 A CN 202210972039A CN 115215353 A CN115215353 A CN 115215353A
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China
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ext
gas
ammonia
catalytic material
synthesis
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吴志岳
刘炳言
曹学磊
刘晓翠
杜清华
尹晓艳
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Heideway Technology Group Qingdao Co ltd
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Heideway Technology Group Qingdao Co ltd
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    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01CAMMONIA; CYANOGEN; COMPOUNDS THEREOF
    • C01C1/00Ammonia; Compounds thereof
    • C01C1/02Preparation, purification or separation of ammonia
    • C01C1/04Preparation of ammonia by synthesis in the gas phase
    • C01C1/0405Preparation of ammonia by synthesis in the gas phase from N2 and H2 in presence of a catalyst
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01CAMMONIA; CYANOGEN; COMPOUNDS THEREOF
    • C01C1/00Ammonia; Compounds thereof
    • C01C1/02Preparation, purification or separation of ammonia
    • C01C1/04Preparation of ammonia by synthesis in the gas phase
    • C01C1/0405Preparation of ammonia by synthesis in the gas phase from N2 and H2 in presence of a catalyst
    • C01C1/0417Preparation of ammonia by synthesis in the gas phase from N2 and H2 in presence of a catalyst characterised by the synthesis reactor, e.g. arrangement of catalyst beds and heat exchangers in the reactor

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Analytical Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

The invention discloses an integrated continuous ammonia production system utilizing synthetic catalytic materials under mild conditions, which comprises a first air inlet processing device (PT 01), a second air inlet processing device (PT 02), a first synthetic generating device (MG 01), a second synthetic generating device (MG 02), a first catalytic material buffer device (FB 01), a second catalytic material buffer device (FB 02), a gas separation device (GSU), a gas recovery device (GRU), a nitrogen injection port (N1), a hydrogen injection port (N2), a hydrogen recovery port (N3), a nitrogen recovery port (N4) and a product ammonia outlet (N5). Compared with the traditional Huber's law and law adopted by the industrial synthesis of ammonia at present, the synthesis conditions which need high temperature, high pressure and high energy consumption are complex, and the problems of high cost, high pollution, high energy consumption and the like exist. The system has high integration degree, the structure of the manufacturing equipment is safe and reliable, flexible scaling can be realized, and different production and installation requirements are met.

Description

Integrated continuous ammonia production system under mild condition
Technical Field
The invention relates to the technical field of industrial synthetic ammonia, in particular to an integratable continuous ammonia preparation system under mild conditions.
Background
Ammonia is the most important nitrogen fertilizer, is one of the most productive synthetic chemical products, and is widely applied to the industrial manufacture of plastics, medicines, explosives and the like, and the derivatives of the ammonia can be used as propellants and oxidants for aerospace. At present, the largest application of ammonia is in the manufacturing industry of agricultural fertilizers, the grain yield can be greatly improved by using an ammonia-containing nitrogen fertilizer, and the world population and the ammonia yield are in a proportional correlation. Meanwhile, the ammonia molecule has three hydrogen atoms, so that the ammonia is an excellent energy carrier, and the ammonia is a colorless gas with stable chemical properties at normal temperature and normal pressure, is easy to liquefy and store and transport. Therefore, in recent years, ammonia has been regarded as a clean energy source. As a zero-carbon fuel, the research and application of the ammonia fuel have important significance for greenhouse gas emission reduction and realization of the target under the domestic 'double-carbon' strategy.
At present, the Haber-Bosch method is adopted for large-scale industrial synthesis of ammonia, and iron catalyst catalytic materials are utilized to carry out the synthesis under the conditions of high temperature (450-600 ℃) and high pressure (20-40 MPa), thereby causing the generation of high cost, high pollution and high energy consumption. According to the statistics of relevant data, the energy consumed by the synthetic ammonia industry every year accounts for 2 percent of the total energy supply of the whole world, and accounts for CO of the whole world 2 1.6% of the discharge amount. Therefore, it was sought to use (A) under mild conditions< 450 °C,<5 MPa) becomes the central importance of the development of synthetic ammonia.
Meanwhile, with the development of industrial synthetic ammonia, specific catalysts for synthesizing ammonia, which are relatively low in temperature and high in activity, have been studied to increase the equilibrium conversion rate of ammonia products and the single-pass conversion rate of continuous production, and studies have been carried out in the following. In recent years, rare earth elements have a special electron transition form, can provide a good electron transfer orbit, and have great advantages in the field of heterogeneous supported catalysts no matter used as catalytic active centers or auxiliary agents, and have the characteristics of high catalytic activity, high initiation speed, controllable polymerization reaction, good stereoselectivity, less residue, low toxicity and the like, so that the rare earth elements are widely concerned in the fields of petrochemical industry, chemical industry, three-way catalysis, photoelectrocatalysis and the like.
It is worth paying attention to, through the diligent effort of researchers, various methods and means for synthesizing ammonia under mild conditions have been explored, mainly including photocatalytic synthesis of ammonia, nitrogen fixation enzyme biocatalytic synthesis of ammonia, electrochemical synthesis of ammonia, plasma catalytic synthesis of ammonia, and the like, but all have different problems, such as low catalytic efficiency (low faraday efficiency) and extremely low ammonia yield; the reaction environment is harsh, and the detection method and operation are difficult to realize; the energy consumption is too high, and the like, so that the application of the method in practice is limited. Recently, there is a recent article, mechanochhemistry for ammonia synthesis under mill conditions (published in journal of Nature nanotechnology, 12.2020), which reports a mechanochemical synthesis scheme of ammonia under mild conditions, with final ammonia concentrations of 82.5 vol% at temperatures as low as 45 ℃ and 1 bar. However, the solution in the article cannot be directly used in the actual ammonia production, with the main limitations as follows: firstly, the scheme is carried out under the laboratory condition, each reaction is completed by manual operation in sequence by steps, so that the manual operation time is increased, and the continuous and uninterrupted requirement in the actual production cannot be met. Secondly, in order to verify the final ammonia synthesis effect, the scheme ensures the full fusion of reactants after a sufficiently long ball milling time, and the actual production needs to seek the balance of the ammonia production concentration as large as possible and the reaction time as short as possible. Thirdly, a small planetary ball mill is adopted as a reaction synthesis generating device in the scheme, although the planetary ball mill is also practically applied in each occasion in industrial production and can be correspondingly expanded according to the reaction requirement, the search for a more reasonable and efficient reaction synthesis generating device is still the key for improving the yield. Finally, the catalytic material of pure iron powder is utilized in the scheme of the invention, and the ammonia synthesis reaction is verified to be feasible.
Disclosure of Invention
In order to solve the technical problems, the invention provides an integratable continuous ammonia production system under mild conditions, which aims to solve the problems of the prior industrial synthesis ammonia proposed in the background art, and realizes the integratable continuous ammonia production under mild conditions by using a mechanochemical method and a more efficient and stable catalytic material and through the action of a novel ammonia synthesis generator, thereby providing a novel solution for the preparation and wide application of ammonia.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides an integrated continuous ammonia production system under mild conditions, which comprises a first air inlet treatment device (PT 01), a second air inlet treatment device (PT 02), a first synthesis generation device (MG 01), a second synthesis generation device (MG 02), a first catalytic material buffer device (FB 01), a second catalytic material buffer device (FB 02), a gas separation device (GSU), a gas recovery device (GRU), a nitrogen injection port (N1), a hydrogen injection port (N2), a hydrogen recovery port (N3), a nitrogen recovery port (N4) and a product ammonia outlet (N5);
the nitrogen injection port (N1) is connected with the first air inlet treatment device (PT 01), and the hydrogen injection port (N2) is connected with the second air inlet treatment device (PT 02);
the first air inlet processing device (PT 01), the first synthesis generation device (MG 01), the second air inlet processing device (PT 02), the second synthesis generation device (MG 02) and the gas separation device (GSU) are sequentially connected through a first gas phase pipeline (LG 1), a second gas phase pipeline (LG 2), a third gas phase pipeline (LG 3) and a fourth gas phase pipeline (LG 4);
the first catalytic material buffer device (FB 01), the first synthesis generation device (MG 01), the second catalytic material buffer device (FB 02) and the second synthesis generation device (MG 02) are sequentially connected end to end;
a first solid phase pipeline (LS 1) is arranged between the first synthesis generation device (MG 01) and the second catalytic material buffer device (FB 02), and a second solid phase pipeline (LS 2) is arranged between the second synthesis generation device (MG 02) and the first catalytic material buffer device (FB 01);
the gas separation device (GSU) is connected with the product ammonia outlet (N5) and the gas recovery device (GRU);
the gas recovery device (GRU) is respectively connected with the hydrogen recovery port (N3) and the nitrogen recovery port (N4).
The gas separation device is used for separating product ammonia. The gas recovery device is used for separating nitrogen and hydrogen, and is convenient for subsequent recycling.
Furthermore, a monitoring instrument sensor and a control valve are arranged on the gas-phase pipeline (LG 1-LG 4) and the solid-phase pipeline (LS 1-LS 2), and the reaction is ensured to independently and uninterruptedly operate in the synthesis generating device through sensor monitoring feedback and related valve control. The raw material reaction gases of nitrogen and hydrogen enter the synthesis generating device through the gas inlet processing device and the gas phase pipeline respectively, and the continuous and stable supply of the raw material reaction gases of nitrogen and hydrogen is ensured through the monitoring feedback of the sensor and the control of the relevant valve.
Further, the first combination generating device (MG 01) and the second combination generating device (MG 02) are configured as follows: ext> Aext> fixedext> electromagneticext> magneticext> deviceext> isext> arrangedext> outsideext> aext> rotatorext> barrelext> (ext> MGext> -ext> Bext>)ext>,ext> theext> electromagneticext> magneticext> deviceext> comprisesext> anext> upperext> electromagneticext> magneticext> deviceext> (ext> MGext> -ext> Aext>)ext> andext> aext> lowerext> electromagneticext> magneticext> deviceext> (ext> MGext> -ext> Dext>)ext>,ext> aext> grindingext> bodyext> inext> theext> rotatorext> barrelext> (ext> MGext> -ext> Bext>)ext> isext> drivenext> toext> moveext> byext> theext> rotationext> ofext> theext> rotatorext> barrelext> (ext> MGext> -ext> Bext>)ext>,ext> andext> theext> electromagneticext> magneticext> deviceext> hasext> magneticext> adsorptionext> effectext> onext> theext> grindingext> bodyext>,ext> andext> theext> workingext> modeext> canext> realizeext> oneext> orext> theext> combinationext> ofext> aext> rotatingext> modeext>,ext> aext> vibratingext> modeext> andext> theext> likeext>.ext>
Furthermore, the rotator cylinder (MG-B) is made of metal or metal alloy which is not easy to be magnetized, and the inner surface of the cylinder is provided with a lining plate (MG-C).
The function of the lining plate (MG-C) is as follows:
1. the energy is transferred, and the rotational kinetic energy provided by the motor is converted into the potential energy of the grinding body through the special shape of the surface of the lining plate and the friction force between the lining plate and the grinding body, so that the catalyst and the raw material gas are impacted and promoted to react.
2. Not only can the cylinder body be protected from directly receiving the impact of the grinding body, but also the rigidity of the cylinder body can be increased, and the service life is prolonged.
Furthermore, the material of the central part of the grinding body adopted in the rotary body cylinder (MG-B) is magnetic material, and the outer part of the grinding body is covered with wear-resistant material. The grinding body is selected from various particle sizes and is combined and used according to a certain proportion.
Preferably, the material of the central part of the grinding body is iron-based.
Furthermore, the first catalytic material buffer device (FB 01) and the second catalytic material buffer device (FB 02) are well sealed, and the interiors of the first catalytic material buffer device and the second catalytic material buffer device are protected by pure and dry nitrogen, so that the invasion of pollution gases such as oxygen, water vapor and the like can be effectively avoided.
The system is wholly arranged in an independent sealing place, so that the danger caused by internal gas leakage is prevented, and the invasion of external polluted gas is also prevented.
The innovation points of the invention are as follows:
the electromagnetic device is added on the basis of the traditional roller grinder, so that the reaction can be promoted to be rapidly and efficiently carried out. The other devices are the existing devices or in the existing technology, including pipelines, valves and instruments and meters, form a complete system, and ensure the operation of the reaction.
The invention has the beneficial effects that:
compared with the traditional Huppe law adopted by the industrial synthesis of ammonia at present, the system has the advantages of complexity, high synthesis conditions of high temperature, high pressure and high energy consumption, high cost, high pollution, high energy consumption and the like. The system has high integration degree, the structure of the manufacturing equipment is safe and reliable, flexible scaling can be realized, and different production and installation requirements are met.
Drawings
FIG. 1 is a diagram of a continuous ammonia production system of the present invention.
FIG. 2 is a schematic structural diagram of a synthesis generator in the continuous ammonia production system of the present invention.
In the figure:
a first air inlet processing device PT01, a second air inlet processing device PT02, a first synthesis generating device MG01, a second synthesis generating device MG02, a first catalytic material buffer device FB01, a second catalytic material buffer device FB02, a gas separation device GSU, a gas recovery device GRU, a nitrogen gas injection port N1, a hydrogen gas injection port N2, a hydrogen gas recovery port N3, a nitrogen gas recovery port N4 and a product ammonia outlet N5; a first gas phase pipeline LG1, a second gas phase pipeline LG2, a third gas phase pipeline LG3, a fourth gas phase pipeline LG4, a first solid phase pipeline LS1, a second solid phase pipeline LS2, a rotator cylinder MG-B, a device MG-A, MG-D and a lining plate MG-C.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-2, the present embodiment provides an integrated continuous ammonia production system under mild conditions, which includes a first air inlet processing device (PT 01), a second air inlet processing device (PT 02), a first synthesis generation device (MG 01), a second synthesis generation device (MG 02), a first catalytic material buffer device (FB 01), a second catalytic material buffer device (FB 02), a gas separation device (GSU), a gas recovery device (GRU), a nitrogen gas injection port (N1), a hydrogen gas injection port (N2), a hydrogen gas recovery port (N3), a nitrogen gas recovery port (N4), and a product ammonia outlet (N5);
the nitrogen injection port (N1) is connected with the first air inlet treatment device (PT 01), and the hydrogen injection port (N2) is connected with the second air inlet treatment device (PT 02);
the first air inlet processing device (PT 01), the first synthesis generation device (MG 01), the second air inlet processing device (PT 02), the second synthesis generation device (MG 02) and the gas separation device (GSU) are sequentially connected through a first gas phase pipeline (LG 1), a second gas phase pipeline (LG 2), a third gas phase pipeline (LG 3) and a fourth gas phase pipeline (LG 4);
the first catalytic material buffer device (FB 01), the first synthesis generation device (MG 01), the second catalytic material buffer device (FB 02) and the second synthesis generation device (MG 02) are sequentially connected end to end;
a first solid phase pipeline (LS 1) is arranged between the first synthesis generation device (MG 01) and the second catalytic material buffer device (FB 02), and a second solid phase pipeline (LS 2) is arranged between the second synthesis generation device (MG 02) and the first catalytic material buffer device (FB 01);
the gas separation device (GSU) is connected with the product ammonia outlet (N5) and the gas recovery device (GRU);
the gas recovery device (GRU) is respectively connected with the hydrogen recovery port (N3) and the nitrogen recovery port (N4).
The system of the embodiment is wholly arranged in an independent sealed place and is carried out according to the following procedures:
firstly, the whole equipment is subjected to purging protection. Specifically, a purge gas, nitrogen, is continuously injected through the nitrogen injection port N1, and the nitrogen is decontaminated and dried through the first air inlet treatment device (PT 01). The protective gas-nitrogen gas purges the first to fourth gas phase pipelines (LG 1-LG 4), the first and second synthesis generation devices (MG 01 and MG 02), the gas separation device (GSU) and the gas recovery device (GRU) in sequence, so that the purging protection of the whole equipment is realized. The discharged blowing protection gas-nitrogen mixed with other impurity gases is discharged through a nitrogen recovery port N4.
The first and second catalytic material buffer devices (FB 01, FB 02) and the first and second solid phase pipelines (LS 1-LS 2) and the like are independently subjected to a purging protective gas-nitrogen purging before the system operates, and the catalytic material is sufficiently sealed in the first catalytic material buffer device (FB 01).
Further, the injection of the catalytic material (initial state) is performed.
Specifically, the catalytic material (initial state) stored in the first catalytic material buffer device (FB 01) is introduced into the first synthesis generator device (MG 01) via the relevant control valve.
Specifically, the catalytic material buffer device (FB 01) has good sealing performance, adopts pure and dry nitrogen protection inside, and can effectively prevent the invasion of polluted gases such as oxygen, water vapor and the like.
Further, dissociation of nitrogen was performed.
Specifically, the synthesis raw material gas-nitrogen gas is continuously injected through the nitrogen gas injection port N1, and the nitrogen gas is subjected to impurity removal and drying through the first gas inlet treatment device (PT 01). Through the associated control valve into a first synthesis generation device (MG 01).
Specifically, the first synthetic generator (MG 01) is started, and the first synthetic generator (MG 01) can operate in one or a combination of a rotation mode, a vibration mode and the like through the rotation of the cylinder and the magnetic adsorption effect of the electromagnetic magnetic device arranged on the surface of the cylinder on the grinding body in the synthetic generator. At this time, the mechanical collision in the mechanochemical friction process promotes the high defect density generated by the catalytic material in situ, and accelerates the dissociation of nitrogen. Because the dissociation of nitrogen is exothermic reaction, interval off-frequency can be properly increased to release heat, and simultaneously, an external air cooling system can be matched to cool the first synthesis generating device (MG 01).
Further, the transfer of the catalytic material (reaction intermediate) is carried out.
Specifically, the catalytic material (reaction intermediate product) having nitrogen adsorbed on the surface thereof generated in the first synthesis generation device (MG 01) is introduced into the second catalytic material buffer device (FB 02) via the relevant control valve, the first solid phase line (LS 1), and the like.
Specifically, after the transfer of the catalytic material (reaction intermediate product) is completed, the first synthesis generation device (MG 01) can continue the work of injecting the catalytic material (initial state), dissociating nitrogen gas, and the like.
Further, injection of catalytic material (reaction intermediate) is performed.
Specifically, the catalytic material (reaction intermediate) stored in the second catalytic material buffer device (FB 02) is introduced into the second synthesis generation device (MG 02) via the relevant control valve.
Specifically, the second catalytic material buffer device (FB 02) has good sealing, adopts pure and dry nitrogen protection inside, and can effectively prevent the invasion of polluted gases such as oxygen, water vapor and the like.
Further, replacement of hydrogen gas was performed.
Specifically, replacement gas, hydrogen, was continuously injected through the hydrogen injection port N2, and the hydrogen was decontaminated and dried through the second gas inlet treatment device (PT 02). The replacement gas-hydrogen sequentially passes through the third and fourth gas phase pipelines (LG 3-LG 4), the second synthesis generation device (MG 02), the gas separation device (GSU) and the gas recovery device (GRU), so that the original gas of the related equipment is replaced. Through the action of a Gas Recovery Unit (GRU), the discharged replacement gas-hydrogen is recycled or subjected to related treatment after passing through a hydrogen recovery port N3, and the rest gas is recycled or subjected to related treatment after passing through a nitrogen recovery port N4.
Further, a hydrogenation step is performed.
Specifically, the synthesis feed gas-hydrogen is continuously injected through the hydrogen injection port N2, and the hydrogen is subjected to impurity removal and drying through the second gas inlet treatment device (PT 02). Through the associated control valve into a second synthesis generation device (MG 02).
Specifically, the second synthetic generator (MG 02) is started, and the second synthetic generator (MG 02) can work in one of a rotary type, a vibration type and the like or a combination of the rotary type and the vibration type through the rotation of the cylinder and the magnetic adsorption effect of an electromagnetic device arranged on the surface of the cylinder on the grinding body in the synthetic generator. At this point, the mechanical impact of the mechanochemical friction process generates additional energy that promotes the separation of the strongly adsorbed intermediate product from the surface of the activated catalytic material, so that the final product ammonia is released. Since the hydrogenation step is an endothermic reaction, the intermittent frequency of the stop can be suitably reduced.
Further, the transfer of the catalytic material (nitrogen dissociated) is performed.
Specifically, the catalytic material whose surface nitrogen is dissociated from the nitrogen generated in the second synthesis generation device (MG 02) enters the first catalytic material buffer device (FB 01) via the relevant control valve, the second solid phase line (LS 2), and the like.
Specifically, after the transfer of the catalytic material (nitrogen dissociated) is completed, the second synthesis generation unit (M02) may continue the operations of injecting the catalytic material (reaction intermediate), hydrogenating the reaction intermediate, and the like.
Further, separation of product ammonia is performed.
Specifically, when the concentration of ammonia in the second synthesis generation device (MG 02) reaches a set concentration, the separation of product ammonia is performed. At the moment, ammonia gas and other mixed gas in the second synthesis generation device (MG 02) pass through a relevant control valve and a fourth gas phase pipeline (LG 4), and the final product ammonia is collected to a subsequent storage device through a product ammonia outlet N5 under the action of a gas separation device (GSU). Other mixed gases pass through the action of a gas recovery device (GRU), hydrogen in the mixed gases passes through a hydrogen recovery port N3 and then is recycled or is subjected to related treatment, and the rest gases pass through a nitrogen recovery port N4 and then are recycled or is subjected to related treatment. .
Furthermore, in the process, the first and second synthesis generation devices (MG 01, MG 02) and the first and second catalytic material buffer devices (FB 01, FB 02) are connected by the first and second solid phase pipelines (LS 1, LS 2) and the like, and the catalytic material and the reaction intermediate product are ensured to respectively and independently operate in the first and second synthesis generation devices (MG 01, MG 02) without interruption through sensor detection feedback and relevant valve control.
Furthermore, in the process, the raw material reaction gases of nitrogen and hydrogen respectively pass through the first and second gas inlet processing devices (PT 01, PT 02) and enter the first and second synthesis generating devices (MG 01, MG 02) through the first and second gas phase pipelines (LG 1, LG 2), and the continuous and stable supply of the raw material reaction gases of nitrogen and hydrogen is ensured through the detection feedback of the sensors and the control of relevant valves.
The whole system is arranged in an independent sealing place, so that danger caused by internal gas leakage is prevented, and invasion of external pollution gas can also be prevented. Due to aging of the catalytic material and the like, after the catalytic material runs for enough time, the catalytic material is checked and supplemented, and the yield of the product ammonia is ensured. When the system needs to be shut down completely, the whole equipment needs to be purged and protected by nitrogen, so that the danger caused by the leakage of combustible gas and toxic gas is prevented.
The above examples only illustrate that the integrable continuous ammonia production system under mild conditions is analyzed according to the achievable conditions, but the selection of the catalytic materials, the types of the processing equipment, the forms of the control valves, the configuration of the detecting instruments and meters and the like can be flexibly configured and changed according to the actual requirements.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.

Claims (8)

1. An integrated continuous ammonia production system under mild conditions is characterized by comprising a first air inlet treatment device (PT 01), a second air inlet treatment device (PT 02), a first synthesis generation device (MG 01), a second synthesis generation device (MG 02), a first catalytic material buffer device (FB 01), a second catalytic material buffer device (FB 02), a gas separation device (GSU), a gas recovery device (GRU), a nitrogen injection port (N1), a hydrogen injection port (N2), a hydrogen recovery port (N3), a nitrogen recovery port (N4) and a product ammonia outlet (N5);
the nitrogen injection port (N1) is connected with the first air inlet treatment device (PT 01), and the hydrogen injection port (N2) is connected with the second air inlet treatment device (PT 02);
the first air inlet processing device (PT 01), the first synthesis generation device (MG 01), the second air inlet processing device (PT 02), the second synthesis generation device (MG 02) and the gas separation device (GSU) are sequentially connected through a first gas phase pipeline (LG 1), a second gas phase pipeline (LG 2), a third gas phase pipeline (LG 3) and a fourth gas phase pipeline (LG 4);
the first catalytic material buffer device (FB 01), the first synthesis generation device (MG 01), the second catalytic material buffer device (FB 02) and the second synthesis generation device (MG 02) are sequentially connected end to end;
a first solid phase pipeline (LS 1) is arranged between the first synthesis generation device (MG 01) and the second catalytic material buffer device (FB 02), and a second solid phase pipeline (LS 2) is arranged between the second synthesis generation device (MG 02) and the first catalytic material buffer device (FB 01);
the Gas Separation Unit (GSU) is connected with the product ammonia outlet (N5) and the Gas Recovery Unit (GRU);
the gas recovery device (GRU) is respectively connected with the hydrogen recovery port (N3) and the nitrogen recovery port (N4).
2. An integrated continuous ammonia process system under mild conditions as claimed in claim 1 wherein said gas and solid phase lines are provided with instrumentation sensors and control valves.
3. The system for integrated continuous ammonia production under mild conditions according to claim 1, wherein the first synthesis generator (MG 01) and the second synthesis generator (MG 02) are configured as follows: ext> Aext> fixedext> electromagneticext> magneticext> deviceext> isext> arrangedext> outsideext> aext> rotatorext> barrelext> (ext> MGext> -ext> Bext>)ext>,ext> theext> electromagneticext> magneticext> deviceext> comprisesext> anext> upperext> electromagneticext> magneticext> deviceext> (ext> MGext> -ext> Aext>)ext> andext> aext> lowerext> electromagneticext> magneticext> deviceext> (ext> MGext> -ext> Dext>)ext>,ext> aext> grindingext> bodyext> inext> theext> rotatorext> barrelext> (ext> MGext> -ext> Bext>)ext> isext> drivenext> toext> moveext> byext> theext> rotationext> ofext> theext> rotatorext> barrelext> (ext> MGext> -ext> Bext>)ext>,ext> andext> theext> electromagneticext> magneticext> deviceext> hasext> magneticext> adsorptionext> effectext> onext> theext> grindingext> bodyext>,ext> andext> theext> workingext> modeext> canext> realizeext> oneext> orext> theext> combinationext> ofext> aext> rotatingext> modeext>,ext> aext> vibratingext> modeext> andext> theext> likeext>.ext>
4. A mild condition integratable continuous ammonia production system according to claim 3, wherein the rotor body (MG-B) is made of a non-magnetizable metal or metal alloy, and the inner surface of the rotor body is provided with a lining plate (MG-C).
5. A system for the integrated continuous production of ammonia under mild conditions as in claim 2, wherein the rotor body (MG-B) comprises a grinding body, the central part of which is made of magnetic material and the outer part of which is covered with wear-resistant material.
6. A mild condition integrable continuous ammonia plant system according to claim 5, characterised in that the grinding bodies are selected from a large number of particle sizes and are used in combination according to a certain ratio.
7. The system of claim 5, wherein the central portion of the grinding body is iron-based.
8. The system for the integrated continuous production of ammonia under mild conditions according to claim 1, wherein the first catalytic material buffer unit (FB 01) and the second catalytic material buffer unit (FB 02) have good sealing performance and are protected by pure and dry nitrogen.
CN202210972039.4A 2022-08-14 2022-08-14 Integrated continuous ammonia production system under mild condition Pending CN115215353A (en)

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