CN116574885A - Container for noble metal catalyst heat treatment - Google Patents

Container for noble metal catalyst heat treatment Download PDF

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Publication number
CN116574885A
CN116574885A CN202310584508.XA CN202310584508A CN116574885A CN 116574885 A CN116574885 A CN 116574885A CN 202310584508 A CN202310584508 A CN 202310584508A CN 116574885 A CN116574885 A CN 116574885A
Authority
CN
China
Prior art keywords
cavity
noble metal
metal catalyst
container
air duct
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310584508.XA
Other languages
Chinese (zh)
Inventor
郑文
吴若飞
吴爱明
夏国锋
祝乾伟
朱凤鹃
任力闻
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Tang Feng Energy Technology Co ltd
Original Assignee
Shanghai Tang Feng Energy Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai Tang Feng Energy Technology Co ltd filed Critical Shanghai Tang Feng Energy Technology Co ltd
Priority to CN202310584508.XA priority Critical patent/CN116574885A/en
Publication of CN116574885A publication Critical patent/CN116574885A/en
Pending legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0006—Details, accessories not peculiar to any of the following furnaces
    • C21D9/0025—Supports; Baskets; Containers; Covers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/08—Heat treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/14—Treatment of metallic powder
    • B22F1/142—Thermal or thermo-mechanical treatment
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/02—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working in inert or controlled atmosphere or vacuum
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/14—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of noble metals or alloys based thereon

Abstract

Embodiments of the present disclosure provide a holding vessel for thermal treatment of a noble metal catalyst, comprising: the container body comprises a first cavity and a second cavity which are integrally formed, the inner diameter of the smallest part of the first cavity is larger than that of the second cavity, an air duct is arranged at the joint of the first cavity and the second cavity, the first end of the air duct is communicated with the first cavity, the second end of the air duct is closed, and a plurality of first air holes are formed in the second end of the air duct in a closed mode. The container body is formed by the first cavity and the second cavity with different inner diameters, the material is positioned in the first cavity with larger inner diameter, the second cavity with smaller inner diameter is arranged to prevent most of the material from splashing, the problem that the material drifts along with the air flow is solved, the effect of reducing or avoiding the material overflowing along with the air flow is achieved, meanwhile, the air guide pipe is arranged, the first air vent is formed in the air guide pipe, the air flow is led out, and the problem that the air flow of the second cavity is insufficient is solved.

Description

Container for noble metal catalyst heat treatment
Technical Field
The specification relates to the technical field of noble metal catalyst heat treatment, in particular to a container for noble metal catalyst heat treatment.
Background
In the preparation of noble metal catalysts, the catalysts are generally subjected to a heat treatment step. The process steps are generally as follows: 1. the materials are contained in a crucible and the crucible is placed in a cavity of the heat treatment equipment; 2. evacuating the chamber of the thermal processing apparatus to remove air; 3. introducing inert gas and performing heat treatment.
The general crucible is usually an open container, and if the surface of the material itself contains moisture or additional gas is generated during the interaction with the reaction gas in step 3, the material may generate a phenomenon of splashing in the vacuum chamber.
Disclosure of Invention
In view of this, this description embodiment provides a hold container for noble metal catalyst thermal treatment, constitutes the container body through first cavity and the second cavity that the internal diameter is different, and the material is in the great first cavity of internal diameter, through setting up the less second cavity of internal diameter, can prevent the splash of most material, simultaneously through setting up the air duct, and set up first bleeder vent on the air duct, can increase the air current and derive.
The embodiment of the specification provides the following technical scheme: a holding vessel for noble metal catalyst heat treatment, comprising: the container body, the container body includes integrated into one piece's first cavity and second cavity, the internal diameter of the minimum department of first cavity is greater than the internal diameter of second cavity, first cavity and second cavity junction are provided with the air duct, the first end of air duct with first cavity is linked together, the second end of air duct is sealed, a plurality of first bleeder vents have been seted up to the second end closure of air duct.
Preferably, the first cavity is a cavity of a truncated cone;
and/or, the second cavity is a cylinder cavity.
Preferably, the larger end of the truncated cone cavity is closed, the smaller end of the truncated cone cavity is open, and the smaller end of the truncated cone cavity is connected with the cylindrical cavity.
Preferably, the inner diameter of the opening at the smaller end of the truncated cone is larger than the inner diameter of the cylindrical cavity.
Preferably, the air duct is arranged obliquely upwards, and the second end of the air duct and the top end of the second cavity are in the same plane.
Preferably, the container further comprises a cover cap, and the cover cap is arranged at the end surface of the second cavity far away from the first cavity.
Preferably, a plurality of second ventilation holes are formed in the cover.
Preferably, the cover is made of a quartz sand core, the thickness of the top of the cover is 2-5 mm, and the diameter of the second ventilation hole is 20-30 μm, or 10-15 μm, or 4.5-9 μm, or 3-4 μm.
Preferably, the first cavity and the second cavity are bonded together by sintering.
Preferably, the container further comprises a handle, and two ends of the handle are respectively connected with the outer walls of the first cavity and the second cavity.
Compared with the prior art, the beneficial effects that above-mentioned at least one technical scheme that this description embodiment adopted can reach include at least:
the container body is formed by the first cavity and the second cavity with different inner diameters, the material is positioned in the first cavity with larger inner diameter, the second cavity with smaller inner diameter is arranged to prevent most of the material from splashing, the problem that the material drifts along with the air flow is solved, the effect of reducing or avoiding the material overflowing along with the air flow is achieved, meanwhile, the air guide pipe is arranged, the first air vent is formed in the air guide pipe, the air flow is led out, and the problem that the air flow of the second cavity is insufficient is solved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic perspective view of a container for heat treatment of noble metal catalyst according to the present application;
FIG. 2 is a partial cross-sectional view of a containment vessel for precious metal catalyst heat treatment provided by the present application;
fig. 3 is a schematic structural view of a cover of a container for noble metal catalyst heat treatment according to the present application.
In the figure, 1, a first cavity, 11, a round platform cavity, 2, a second cavity, 21, a cylinder cavity, 3, an air duct, 4, a first air hole, 5, a handle, 6, a cover cap, 7 and a second air hole.
Detailed Description
Embodiments of the present application will be described in detail below with reference to the accompanying drawings.
Other advantages and effects of the present application will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present application with reference to specific examples. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. The application may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present application. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It is noted that various aspects of the embodiments are described below within the scope of the following claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the present disclosure, one skilled in the art will appreciate that one aspect described herein may be implemented independently of any other aspect, and that two or more of these aspects may be combined in various ways. For example, apparatus may be implemented and/or methods practiced using any number and aspects set forth herein. In addition, such apparatus may be implemented and/or such methods practiced using other structure and/or functionality in addition to one or more of the aspects set forth herein.
It should also be noted that the illustrations provided in the following embodiments merely illustrate the basic concept of the present application by way of illustration, and only the components related to the present application are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complicated.
In addition, in the following description, specific details are provided in order to provide a thorough understanding of the examples. However, it will be understood by those skilled in the art that the aspects may be practiced without these specific details.
In the prior art, during the preparation process of noble metal catalysts, a crucible is generally used for containing materials, and a general crucible is generally an open container, so that the materials are easy to splash in a vacuum cavity when gas reacts with the materials in the heat treatment process.
The inventor has conducted extensive and intensive experiments to design a holding vessel for the heat treatment of noble metal catalysts.
The application solves the technical problems that: avoiding the material from splashing in the heat treatment process of the noble metal catalyst.
More specifically, the solution adopted by the application comprises the following steps: the container body is formed by the first cavity and the second cavity with different inner diameters, the material is positioned in the first cavity with larger inner diameter, the second cavity with smaller inner diameter is arranged to prevent most of the material from splashing, the effect of reducing or avoiding the material overflowing along with the air flow is achieved, meanwhile, the air guide pipe is arranged, the first air holes are formed in the air guide pipe, and the air flow guiding out can be increased.
The following describes the technical scheme provided by each embodiment of the present application with reference to the accompanying drawings.
As shown in fig. 1 to 2, a container for heat treatment of a noble metal catalyst, comprising: the container body, the container body includes integrated into one piece's first cavity 1 and second cavity 2, and first cavity 1 and second cavity 2 are linked together, the internal diameter of the minimum department of first cavity 1 is greater than the internal diameter of second cavity 2, first cavity 1 and second cavity 2 junction is provided with air duct 3, air duct 3's first end with first cavity 1 is linked together, air duct 3's second end is sealed, a plurality of first bleeder vents 4 have been seted up in air duct 3's second end closure.
The container body is formed by the first cavity 1 and the second cavity 2 with different inner diameters, after the material is placed in the container body, the material is positioned in the first cavity 1, when the container body is positioned in the vacuum cavity, the material or adsorbed gas is released, as the inner diameter of the second cavity 2 is smaller than that of the first cavity 1, when the material splashes, the material can be blocked by the second cavity 2, the second cavity 2 can prevent most of the material from splashing, meanwhile, the air duct 3 is arranged at the joint of the first cavity 1 and the second cavity 2, and a plurality of first air holes 4 are formed in the closed end of the air duct 3, and the first air holes 4 enable the air duct 3 to be communicated with the vacuum cavity, so that the derivation of air flow in the container body can be increased.
It should be noted that, the end of the first cavity 1 away from the second cavity 2 is closed, the first cavity 1 can be arranged in a form of gradually decreasing the inner diameter from the end away from the second cavity 2 to the end close to the second cavity 2, so as to ensure that the inner wall of the first cavity 1 can play a role in blocking materials, and meanwhile, the inner diameter of the second cavity 2 is smaller than the minimum inner diameter of the first cavity 1, so that most of materials can be prevented from splashing.
It should be noted that the container body may be a crucible formed of the first cavity 1 and the second cavity 2 having different inner diameters so as to ensure the effect on the heat treatment process of the catalyst.
As shown in fig. 1-2, in some embodiments, the first cavity 1 is a frustoconical cavity 11; the second cavity 2 is a cylinder cavity 21, through setting up first cavity 1 as round platform body cavity 11, round platform body cavity 11 is from the gradual reduction of the internal diameter of big end to tip, and second cavity 2 sets up as cylinder cavity 21, and round platform body cavity 11 less one end internal diameter is not less than the internal diameter of cylinder cavity 21, and when carrying out the thermal treatment to the material, the container body is in the vacuum cavity, and the material is in round platform body cavity 11, and upper portion's cylinder cavity 21 is because cavity diameter is less than the cavity diameter of round platform body, consequently can prevent that most materials from splashing to avoid the material to get into in the vacuum cavity.
Further, the bigger one end of round platform body cavity 11 is sealed, the smaller one end opening of round platform body cavity 11, the smaller one end of round platform body cavity 11 with cylinder cavity 21 is connected, through the one end that is big with round platform body cavity 11 is sealed, is linked together less one end and cylinder cavity 21, and the material is in the blind end of round platform body cavity 11, when the material upwards splashes, because the internal diameter of round platform body cavity 11 from down supreme gradual reduction, and round platform body cavity 11's minimum end top is connected with cylinder cavity 21, consequently can be very big avoid the material to splash out the container body and get into in the vacuum cavity.
Still further, the smaller internal diameter of one end opening part of the round platform body is greater than the internal diameter of the cylinder cavity 21, and the internal diameter of the cylinder cavity 21 is set to be smaller than the internal diameter of the round platform body cavity 11, so that the material in the round platform body cavity 11 can be prevented from splashing out under the condition that the air flow is ensured by the cylinder cavity 21.
As shown in fig. 1-2, in some embodiments, the air duct 3 is disposed obliquely upward, the second end of the air duct 3 and the top end of the second cavity 2 are located in the same plane, and by disposing the air duct 3 obliquely upward, and the top end of the air duct 3 is flush with the top end of the second cavity 2, it is possible to avoid splashed material from blocking the first ventilation hole 4 at the second end of the air duct 3.
In other embodiments, the top end of the air duct 3 may be slightly higher than the top end of the second cavity 2, and may be set according to practical situations.
As shown in fig. 1-3, in some embodiments, the container further includes a cover 6, where the cover 6 is disposed at an end surface of the second cavity 2 away from the first cavity 1, and by disposing the cover 6, the cover 6 covers the top of the second cavity 2 and is matched with the top of the second cavity, when the material splashes to the top of the second cavity 2, the cover 6 can play a role in blocking the material, so as to prevent the material from entering the vacuum cavity, completely prevent the material from overflowing along with the airflow, and completely prevent the material from splashing.
As shown in fig. 3, further, the cover 6 is provided with a plurality of second ventilation holes 7, and the second ventilation holes 7 are formed in the cover 6, so that the gas in the container body is convenient to overflow, and meanwhile, the cover 6 can play a role in blocking the material, so that the material is prevented from overflowing along with the airflow into the vacuum cavity.
In some embodiments, the cover 6 is made of a quartz sand core with a thickness of 2-5 mm on top of the cover 6, the quartz sand core having a pore size of 20-30 μm, or 10-15 μm, or 4.5-9 μm, or 3-4 μm, when dried, to accommodate entrapment of catalyst particles of different particle sizes.
In some embodiments, the first cavity 1 and the second cavity 2 are bonded together by adopting a sintering mode, and the first cavity 1 and the second cavity 2 are bonded together by adopting a sintering mode, so that tight connection of the first cavity 1 and the second cavity 2 can be realized, and the connection process operation of the first cavity 1 and the second cavity 2 is more convenient.
As shown in fig. 1-2, in some embodiments, the container further includes a handle 5, two ends of the handle 5 are respectively connected with the outer walls of the first cavity 1 and the second cavity 2, and by setting the handle 5, a worker can hold the container through the handle 5, so that the holding of the container is convenient.
Referring to fig. 1 to 3, a specific method for using the container of the present application will be described below:
when the novel air-permeable container is used, the cover cap 6 is taken down, materials are placed in the container body, the materials fall into the inner bottom of the circular truncated cone cavity 11, the container body containing the materials is placed in the vacuum chamber of the vacuum furnace, vacuumizing is carried out in the vacuum chamber to remove air, inert atmosphere is introduced into the vacuum chamber and heat treatment is carried out, when the materials are heat treated, the materials or adsorbed gas is released, the materials are splashed, as the inner diameter of the circular truncated cone cavity 11 is gradually reduced from bottom to top, and the cylindrical cavity 21 is connected above the minimum end of the circular truncated cone cavity 11, most of the materials can be prevented from splashing, so that the materials are prevented from entering the vacuum chamber, and for other small parts of the materials, when the materials splash moves to the top of the second cavity 2, the cover cap 6 can play a role of blocking the materials, the materials are prevented from entering the vacuum chamber, the materials are completely prevented from overflowing along with the air flow, the materials are completely prevented from splashing, a plurality of first air-permeable holes 4 are formed in the closed end of the air-permeable container 3, the first air-permeable pipes 4 are communicated with the vacuum chamber, and the air-permeable holes 7 in the container body can be conveniently and discharged from the outside.
The same and similar parts of the embodiments in this specification are all mutually referred to, and each embodiment focuses on the differences from the other embodiments. In particular, for the method embodiments described later, since they correspond to the system, the description is relatively simple, and reference should be made to the description of some of the system embodiments.
The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present application should be included in the present application. Therefore, the protection scope of the application is subject to the protection scope of the claims.

Claims (10)

1. A container for thermal treatment of a noble metal catalyst, comprising: the container body, the container body includes integrated into one piece's first cavity and second cavity, the internal diameter of the minimum department of first cavity is greater than the internal diameter of second cavity, first cavity and second cavity junction are provided with the air duct, the first end of air duct with first cavity is linked together, the second end of air duct is sealed, a plurality of first bleeder vents have been seted up to the second end closure of air duct.
2. The vessel for thermal treatment of noble metal catalyst of claim 1, wherein the first cavity is a frustoconical cavity;
and/or, the second cavity is a cylinder cavity.
3. The vessel for the thermal treatment of noble metal catalysts of claim 2, wherein the larger end of the frustoconical cavity is closed and the smaller end of the frustoconical cavity is open and the smaller end of the frustoconical cavity is connected to the cylindrical cavity.
4. A vessel for the thermal treatment of noble metal catalysts according to claim 3, wherein the internal diameter of the smaller end opening of the truncated cone is greater than the internal diameter of the cylindrical cavity.
5. The vessel for the thermal treatment of a noble metal catalyst according to claim 1, wherein the gas-guide tube is disposed obliquely upward, and the second end of the gas-guide tube is in the same plane as the top end of the second cavity.
6. The vessel for thermal treatment of a noble metal catalyst according to any one of claims 1 to 5, further comprising a cover disposed at an end face of the second cavity remote from the first cavity.
7. The container for heat treatment of noble metal catalyst according to claim 6, wherein a plurality of second ventilation holes are formed in the cover.
8. The container for heat treatment of noble metal catalyst according to claim 7, wherein the cover is made of quartz sand core, the thickness of the top of the cover is 2-5 mm, and the diameter of the second ventilation hole is 20-30 μm, or 10-15 μm, or 4.5-9 μm, or 3-4 μm.
9. The vessel for the thermal treatment of a noble metal catalyst according to claim 1, wherein the first cavity and the second cavity are bonded together by sintering.
10. The container for the heat treatment of a noble metal catalyst according to claim 1, further comprising a handle, both ends of which are connected to outer walls of the first cavity and the second cavity, respectively.
CN202310584508.XA 2023-05-23 2023-05-23 Container for noble metal catalyst heat treatment Pending CN116574885A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310584508.XA CN116574885A (en) 2023-05-23 2023-05-23 Container for noble metal catalyst heat treatment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310584508.XA CN116574885A (en) 2023-05-23 2023-05-23 Container for noble metal catalyst heat treatment

Publications (1)

Publication Number Publication Date
CN116574885A true CN116574885A (en) 2023-08-11

Family

ID=87537450

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310584508.XA Pending CN116574885A (en) 2023-05-23 2023-05-23 Container for noble metal catalyst heat treatment

Country Status (1)

Country Link
CN (1) CN116574885A (en)

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