CN-122007405-A - Control method of metal powder continuous hydrogenation system

CN122007405ACN 122007405 ACN122007405 ACN 122007405ACN-122007405-A

Abstract

The invention relates to the field of metal powder hydrogenation manufacturing equipment, and discloses a control method of a metal powder continuous hydrogenation system, which comprises the steps of S1 ventilation, S2 hydrogenation, S3 gas-solid separation, wherein reaction products enter a separation device through a discharge pipe to realize separation of hydrogenated powder and gas, the solid enters a finished product bin, and the gas is treated and recycled, wherein the reaction gas is fed into the reaction gas at the temperature of 50-500 ℃ under the pressure of 1-6MPa to form an ascending gas flow, and the metal powder with the particle size of less than 2000 mu m is fed into the reaction gas flow to carry out hydrogenation reaction under the lifting of the ascending gas flow, and meanwhile, a reaction heat exchanger is started to control the temperature and maintain the required reaction temperature. According to the method, the full contact of gas and solid is realized through ascending air flow, the reaction efficiency is improved, the radiation and convection composite temperature control is realized by utilizing the synergistic effect of the convection heat exchange of the reaction heat exchanger and unreacted gas, the reaction heat is timely led out, the agglomeration or melting caused by local overheating is prevented, and the product quality and the process stability are ensured.

Inventors

WANG WANLIANG
WU XUEYUN
CHEN XI
WANG JINGFENG
LI FANGFANG
XIE JUN
ZHANG HAOCHENG
ZHAO XINLING
GUO ZHENGZHI

Assignees

重庆新型储能材料与装备研究院

Dates

Publication Date: 20260512
Application Date: 20250917

Claims (8)

1. A control method of a metal powder continuous hydrogenation system is characterized by comprising the following steps of S1, ventilating, starting a gas supply mechanism, continuously outputting reaction gas with the pressure of 1-6 Mpa and the temperature of 50-500 ℃ through the gas supply mechanism, introducing the reaction gas into a continuous hydrogenation reaction device through a gas inlet pipe, discharging the reaction gas through a gas discharge pipe to form an ascending gas flow, S2, hydrogenating the metal powder with the particle size of less than 2000 mu m through a material inlet pipe, feeding the metal powder into the continuous hydrogenation reaction device, carrying out hydrogenation reaction under the lifting of the ascending gas flow to obtain hydrogenated metal powder, moving the hydrogenated metal powder upwards under the lifting of the ascending gas flow, discharging the hydrogenated metal powder along with the ascending gas flow through a gas discharge pipe, simultaneously starting a reaction heat exchanger to exchange heat in a hydrogenation reaction zone, enabling the temperature in the continuous hydrogenation reaction device to be maintained in a temperature range required by the hydrogenation reaction, S3, enabling the hydrogenated metal powder and the reaction gas discharged through the gas discharge pipe to enter the gas-solid separation device, carrying out gas-solid separation under the action of the gas-solid separation device to obtain solid hydrogenated metal powder and gas, switching the solid hydrogenated metal powder into a first intermediate bin, enabling the solid hydrogenated metal powder to enter a temporary storage bin to enter a hydrogenation reaction state, and carrying out thermal energy management under normal pressure after the continuous hydrogenation reaction.
2. The method of claim 1, wherein S2 further comprises refining S21, and the reaction gas is sprayed into the continuous hydrogenation reaction device after being accelerated by the refining nozzle before the hydrogenated metal powder is discharged, and drives the hydrogenated metal powder to collide with each other so as to reduce the particle size of the hydrogenated metal powder.
3. A control method of a metal powder continuous hydrogenation system is characterized in that in S3, a gas-solid separation device comprises a gas-solid separation cavity, the gas-solid separation cavity is communicated with a discharge pipe and comprises a plurality of separation cavities connected in series, each separation cavity is independently connected with a first intermediate bin, a punching pipe and a pressure relief pipe are connected to the first intermediate bin, the punching pipe is connected with a punching unit, the pressure relief pipe is communicated with the pressure relief unit, valves are respectively arranged between the first intermediate bin and the punching pipe, the pressure relief pipe, the gas-solid separation cavity and a finished product bin, during discharging, ascending gas flow discharged by the discharge pipe carries hydrogenated metal powder to sequentially pass through the separation cavities connected in series, a filter piece is respectively fixed in each separation cavity, and a filter hole of the filter piece is gradually reduced, so that the particle size of the hydrogenated metal is graded by the filter piece, a continuous grading effect of the hydrogenated metal is achieved, then, a valve between the punching pipe and the first intermediate bin is opened, a reaction gas is conveyed to the first intermediate bin by the punching unit, after the pressure relief pipe is communicated with the separation cavity, the first intermediate bin is opened, the pressure of the valve is transferred between the first intermediate bin and the pressure relief pipe is opened, the pressure of the gas is not transferred to the first intermediate bin, the pressure is equal to the pressure of the first intermediate bin is transferred to the pressure between the first intermediate bin and the pressure is transferred to the pressure of the first intermediate bin, the metal powder is separated by the intermediate bin, the pressure is separated by the intermediate bin and the pressure is separated by the intermediate bin, and the pressure is continuously is separated by the intermediate bin, and the particle size is separated by the filter effect is reduced by the filter material, and the particle size is continuously has particle size is reduced, and the particle diameter is has effect.
4. A control method of a metal powder continuous hydrogenation system according to claim 3, further comprising S4 heat recovery, wherein the metal powder continuous hydrogenation system comprises a heat recovery unit, the heat recovery unit comprises a first heat exchanger and a reaction heat exchanger, and heat energy released by the hydrogenation reaction is recovered through heat exchange media flowing in the first heat exchanger and the reaction heat exchanger during the hydrogenation reaction.
5. A control method of a metal powder continuous hydrogenation system according to claim 4, further comprising S5 heat utilization, wherein the metal powder continuous hydrogenation system further comprises a heat utilization module comprising a heat storage member and a plurality of heat users, wherein the heat storage member is arranged between the heat users and the reaction heat exchanger and the first heat exchanger and communicates the reaction heat exchanger and the first heat exchanger with the heat users.
6. The method for controlling a continuous metal powder hydrogenation system according to claim 4, further comprising S5 heat utilization, wherein the continuous metal powder hydrogenation system further comprises a heat utilization module comprising a steam turbine and a power generation assembly, and the steam turbine is communicated with the heat recovery unit and drives the power generation assembly to convert the heat energy absorbed by the heat recovery unit into electric energy.
7. A control method of a metal powder continuous hydrogenation system according to claim 1, wherein the gas supply mechanism comprises a punching unit and a gas supply unit and a replacement unit, the punching unit and the gas supply unit are used for outputting reaction gas with specific pressure, the punching unit and the gas supply unit independently operate, the output ends of the punching unit and the gas supply unit are mutually communicated to form a gas supply port, the gas supply port is communicated with the continuous hydrogenation reaction device, and the punching unit is communicated with the first intermediate bin.
8. The method of claim 1, wherein S4 is performed, the gas supply mechanism comprises a replacement unit, the replacement unit comprises a replacement pipe and a blow-down pipe, the replacement pipe is communicated with inert gas, and the inert gas is used for replacing reaction gas in the hydrogenation system through the replacement pipe and exhausting the reaction gas through the blow-down pipe when maintenance or after reaction is completed.

Description

Control method of metal powder continuous hydrogenation system Technical Field The scheme relates to the field of hydrogenated metal manufacturing equipment, in particular to a control method of a metal powder continuous hydrogenation system. Background The hydrogen energy is a secondary energy source with rich sources, and has wide application scenes. The hydrogen energy has the advantages of high energy density, functional diversity, no pollution, no toxicity or harm, abundant reserves, environmental compatibility and the like, is an ideal secondary energy carrier matched with the primary energy, and is expected to play a great role in the process of replacing fossil energy. The hydrogen energy full industrial chain comprises 3 key links of hydrogen production, hydrogen storage and transportation and hydrogen utilization. And the high-density storage and transportation of hydrogen energy is a bridge for hydrogen preparation to be applied. The hydrogen storage technology is mainly divided into low-temperature liquid hydrogen storage, high-pressure gaseous hydrogen storage and solid material hydrogen storage. Solid metal hydrogen storage is currently the most reliable, safest and most efficient way of storing hydrogen. At present, solid metal hydrogen storage materials are mainly prepared by methods such as a smelting method, a sintering method, a diffusion method, a ball milling method and the like. For example, chinese patent publication No. CN102583244B discloses a hydrogenation reaction method, in which a processed metal powder is placed in a reaction vessel, hydrogen gas with pressure required by a process is introduced, then the reaction vessel is heated to a temperature required by the process, and after the metal powder is sufficiently reacted with the hydrogen gas by thermal insulation hydrogenation, the heating is stopped, so as to obtain a solid metal hydrogen storage material. However, the hydrogenation reaction method cannot be used for continuous preparation, and the processes of heating, reacting, cooling, harvesting and the like are repeated every time the preparation process of the solid metal hydrogen storage material is carried out, so that the energy consumption is high. Disclosure of Invention The invention aims to provide a control method of a metal powder continuous hydrogenation system, which is used for continuously preparing a solid metal hydrogen storage material, so that the energy consumption for preparing the solid metal hydrogen storage material is reduced. The technical scheme includes that S1 is ventilated, an air supply mechanism is started, reaction gas with the pressure of 1-6 Mpa and the temperature of 50-500 ℃ is continuously output through the air supply mechanism, the reaction gas is led into a continuous hydrogenation reaction device through an air inlet pipe and is discharged through an air discharge pipe to form ascending air flow, S2 is hydrogenated, metal powder with the particle size of less than 2000 mu m is put into the continuous hydrogenation reaction device through an air inlet pipe and is subjected to hydrogenation reaction under the lifting of the ascending air flow to obtain hydrogenated metal powder, the hydrogenated metal powder moves upwards under the lifting of the ascending air flow and is discharged along with the ascending air flow through an air discharge pipe, meanwhile, a reaction heat exchanger is started to conduct heat exchange on a hydrogenation reaction zone, the temperature in the continuous hydrogenation reaction device is maintained in a temperature range required by hydrogenation reaction, S3 is subjected to gas-solid separation, the hydrogenated metal powder discharged through the air discharge pipe and the reaction gas enter a gas-solid separation device, gas-solid separation occurs under the action of the gas-solid separation device, the hydrogenated metal powder enters a temporary storage bin after being switched to a first intermediate bin, and the hydrogenated metal powder enters a continuous bin under normal pressure state. The technical scheme has the advantages that metal powder with the particle size smaller than 2000 mu m is put into a continuous hydrogenation reaction device through a feed pipe, reaction gas with the pressure of 1-6 Mpa ℃ and the temperature of 50-500 ℃ is continuously introduced from the lower part of the continuous hydrogenation reaction device, the reaction gas is discharged through an exhaust pipe, in the reaction process, the metal powder performs hydrogenation reaction under the action of ascending air flow and utilizes a reaction heat exchanger to control the temperature of a reactor body, meanwhile, ascending air flow which does not participate in the reaction takes away heat energy released by the hydrogenation reaction in a convection heat exchange mode, and the reaction heat exchanger is matched with the ascending air flow to form a heat energy management device, so that the radiation heat exchan