CN-122007406-A - Continuous preparation device for hydrogenated metal powder

CN122007406ACN 122007406 ACN122007406 ACN 122007406ACN-122007406-A

Abstract

The invention relates to the technical field of hydrogenation powder preparation, and discloses a continuous preparation device for hydrogenated metal powder. The hydrogen is introduced into the reactor through the air inlet pipe to form ascending air flow, the metal powder enters the reactor through the feed pipe, hydrogenation reaction is carried out under the lifting of the ascending air flow, and the metal powder is discharged along with the air flow through the air outlet pipe. The reaction heat exchanger is arranged on the outer wall of the reactor and is used for carrying out heat management on the hydrogenation reaction. The design ensures that hydrogen and metal powder continuously flow, increases the contact area, improves the reaction efficiency and shortens the reaction time. The ascending airflow has the functions of reaction and heat dissipation, timely takes away the reaction heat released by hydrogenation through convection, realizes dynamic cooling, effectively prevents caking and melting phenomena caused by local high temperature, ensures the purity and granularity uniformity of the product, and realizes safe, continuous and efficient hydrogenation production.

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 (10)

1.A continuous preparation device for hydrogenated metal powder is characterized by comprising a continuous reaction mechanism, wherein the continuous reaction mechanism comprises a reactor body and a reaction heat exchanger, the reactor body comprises an air inlet pipe and an air outlet pipe, hydrogen is continuously introduced into the reactor body through the air inlet pipe to form ascending air flow and flows out through the air outlet pipe, the reaction heat exchanger is arranged on the outer wall of the reactor body and can carry out heat management on the reactor body so as to maintain the temperature of the hydrogenation reaction in the reactor body, a feeding pipe is arranged between the air inlet pipe and the air storage tank, metal powder enters the reactor body through the feeding pipe, hydrogenation reaction is carried out under proper temperature and pressure, and the hydrogen is discharged through the air outlet pipe under the driving of the ascending air flow.
2. The continuous production apparatus of metal hydride powder as claimed in claim 1, further comprising a refining unit comprising a plurality of refining nozzles fixedly disposed on the side wall of the reactor body and below the gas outlet pipe and in communication with the reaction gas.
3. The continuous production apparatus of metal hydride powder as claimed in claim 1, further comprising a gas-solid separation mechanism comprising a gas-solid separation unit, wherein the gas-solid separation unit comprises a gas-solid separation chamber which is communicated with the gas outlet pipe and can separate the solid and the gas discharged from the gas outlet pipe.
4. A continuous production apparatus for a metal hydride powder as claimed in claim 3, wherein the gas-solid separation chamber is provided with a first inlet and outlet, a second inlet and outlet and a third inlet and outlet, and the separation unit further comprises a filter member disposed between the second inlet and outlet and the first inlet and outlet and the third inlet and outlet, and for separating the solid from the gas so that the gas is discharged from the second inlet and outlet and the solid is discharged from the third inlet and outlet.
5. The continuous preparation device of metal hydride powder as claimed in claim 4, wherein the gas-solid separation unit further comprises a first intermediate bin and a first product bin, the first product bin is communicated with the third material inlet and outlet, the first intermediate bin is arranged between the separation cavity and the first product bin and is communicated with the gas-solid separation cavity and the first product bin through a valve, the first intermediate bin is connected with a punching pipe and a pressure relief pipe through a valve, and the pressure state of the first intermediate bin can be switched through the punching pipe and the pressure relief pipe.
6. The continuous preparation device of metal hydride powder as claimed in claim 5, wherein the gas-solid separation mechanism further comprises a pressure relief unit, the pressure relief unit comprises a pressure relief separation cavity and a second finished product bin, a second intermediate bin is connected between the pressure relief separation cavity and the second finished product bin through a valve, and the separation cavity is communicated with the finished product bin through the second intermediate bin.
7. The continuous production apparatus of metal hydride powder as claimed in claim 6, further comprising a gas supply mechanism comprising a gas supply unit including a hydrogen tank in which hydrogen is stored and provided with a hydrogen supply pipe, and a compressor provided between the hydrogen tank and the gas intake pipe and communicating the hydrogen tank with the gas intake pipe by the compressor.
8. The continuous preparation device of metal hydride powder as claimed in claim 7, wherein the gas supply mechanism further comprises a gas treatment unit, the gas treatment unit comprises a pressurizing module and a heating module, the pressurizing module and the heating module are respectively provided with a gas inlet end and a gas outlet end, the gas inlet end of the pressurizing module is communicated with the gas outlet end of the gas supplementing unit, the gas outlet end of the pressurizing module is communicated with the gas inlet end of the heating module, the gas outlet end of the heating module is communicated with the gas inlet pipe, and hydrogen output by the hydrogen storage tank is sequentially input into the reactor body through the gas inlet pipe after passing through the pressurizing module and the heating module.
9. The continuous preparation device of metal hydride powder as claimed in claim 8, wherein the gas supply mechanism further comprises a replacement unit, the replacement unit comprises a replacement storage tank for storing inert gas, the replacement storage tank is communicated with the gas treatment unit, the gas-solid separation unit and the pressure relief unit through valves and is provided with an inert gas supplementing pipe, the first intermediate bin and the second intermediate bin are connected with a vent pipe through valves, and the vent pipe is provided with a vent hole which is communicated with the atmosphere.
10. The continuous preparation device of hydrogenated metal powder according to claim 9, wherein the gas-solid separation mechanism comprises at least two groups of gas-solid separation units, separation cavities of adjacent gas-solid separation units are connected in series, filtering holes of the filtering piece are gradually reduced, and a balance pipe is arranged between adjacent first intermediate bins.

Description

Continuous preparation device for hydrogenated metal powder Technical Field The scheme relates to the technical field of hydrogenation powder preparation, in particular to a continuous preparation device for hydrogenated metal powder. Background The hydrogen energy is a secondary energy source with rich sources, has the advantages of high energy density, functional diversity, no pollution, no toxicity or harm, rich reserves, environmental compatibility and the like, is an ideal secondary energy carrier matched with the primary energy source, has wide application scene and is expected to play a great role in the process of replacing fossil energy sources. The large-scale application of hydrogen energy mainly comprises three 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 and application and is a bottleneck for restricting the large-scale application of hydrogen energy. The hydrogen storage and transportation technology is mainly divided into low-temperature liquid hydrogen storage, high-pressure gaseous hydrogen storage and solid material hydrogen storage, wherein solid metal hydrogen storage is the most reliable, safer and most efficient hydrogen storage mode at present. At present, the mode of converting hydrogen into solid metal mainly comprises a smelting method, a sintering method, a diffusion method, a ball milling method and other preparation processes, for example, china patent with the publication No. CN102583244B discloses a hydrogenation preparation process, hydrogen with pressure required by the process is put into a reaction vessel, the reaction vessel is heated to the temperature required by the process, heat preservation and hydrogenation are carried out to enable the metal powder to fully react with the hydrogen, heating is stopped, and a solid metal hydrogen storage material is prepared, and meanwhile, china patent with the publication No. CN119499988B discloses a mechanical grinding preparation method, and a solid-gas reaction or a solid-solid reaction occurs in the mechanical grinding process and a new compound is generated. However, the existing preparation process can not continuously hydrogenate and refine solid metal, the hydrogenation and refinement time is long, the efficiency is low, and meanwhile, the heat generated in the hydrogenation process can not be transferred in time, so that the materials are heated unevenly in the hydrogenation and refinement process, and the local high temperature can cause metal powder agglomeration and melting to influence the product quality. Disclosure of Invention The invention aims to provide a continuous preparation device for hydrogenated metal powder, which is used for carrying out continuous hydrogenation reaction on solid metal and reducing the influence of local high temperature on the product quality in the hydrogenation process. The technical scheme is that the continuous preparation device for the hydrogenated metal powder comprises a continuous reaction mechanism, wherein the continuous reaction mechanism comprises a reactor body and a reaction heat exchanger, the reactor body comprises an air inlet pipe and an air outlet pipe, hydrogen is continuously introduced into the reactor body through the air inlet pipe to form an ascending air flow and flows out through the air outlet pipe, the reaction heat exchanger is arranged on the outer wall of the reactor body and can carry out thermal management on the reactor body to enable the temperature of the hydrogenation reaction to be maintained in the reactor body, a feeding pipe is arranged between the air inlet pipe and the air storage tank, metal powder enters the reactor body through the feeding pipe, hydrogenation reaction is carried out under proper temperature and pressure, and the metal powder is discharged through the air outlet pipe under the driving of the ascending air flow. The metal powder continuous hydrogenation reaction device has the beneficial effects that for the metal hydrogenation reaction, a certain temperature is required to be kept in the reaction process so as to initiate the reaction and ensure the reaction efficiency, but because the hydrogenation reaction is an exothermic reaction, heat energy is required to be released in the reaction process, when the heat energy generated in the hydrogenation process cannot be timely transferred, the material is possibly heated unevenly, the local high temperature is caused, the metal powder is agglomerated and melted, the quality of a product is influenced, the metal powder continuous hydrogenation reaction device of the scheme enables the metal powder to continuously enter a reactor body to carry out the hydrogenation reaction and be in a flowing state through the arrangement of the ascending air flow and the reaction heat exchanger, hydrogen can fully react with the metal powder, the