CN215312295U - Catalyst on-line evaluation device for directly synthesizing hydrogen peroxide by using hydrogen and oxygen - Google Patents
Catalyst on-line evaluation device for directly synthesizing hydrogen peroxide by using hydrogen and oxygen Download PDFInfo
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- CN215312295U CN215312295U CN202120075813.2U CN202120075813U CN215312295U CN 215312295 U CN215312295 U CN 215312295U CN 202120075813 U CN202120075813 U CN 202120075813U CN 215312295 U CN215312295 U CN 215312295U
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Abstract
The utility model provides an on-line evaluation device for a catalyst for directly synthesizing hydrogen peroxide by hydrogen and oxygen, which comprises a feeding device, a reaction kettle and a product analysis and treatment device; the feeding device comprises a gas feeding device and a solution feeding port; the gas feed device comprises a first gas control conduit and a second gas control conduit; the product analysis and treatment device comprises a gas phase analysis and treatment device and a liquid phase analysis and treatment device. The device can realize the direct processing and analysis of the product and the raw material, has accurate and reliable data and high analysis efficiency, and can efficiently evaluate the performance of the catalyst for directly synthesizing the hydrogen peroxide by the hydrogen and the oxygen.
Description
Technical Field
The utility model relates to the technical field of catalyst evaluation devices and the technical field of hydrogen peroxide production; more particularly, the utility model relates to an on-line evaluation device for a catalyst for directly synthesizing hydrogen peroxide by hydrogen and oxygen.
Background
The hydrogen peroxide is an important green chemical product, is also an important fine chemical and inorganic chemical raw material, and is widely applied to a plurality of fields such as chemical industry, textile, papermaking, wastewater treatment, aerospace application and the like. With the continuous development of chemical industry and the increasing awareness of the environment in various countries, the demand of hydrogen peroxide is increasing year by year. At present, the main method for industrially producing hydrogen peroxide at home and abroad is an anthraquinone method, but has the problems of large device investment, high production cost, complex production process, large amount of byproducts, great environmental pollution and the like. However, the method for directly synthesizing hydrogen peroxide by using hydrogen and oxygen has the advantages of simple production process, low energy consumption, small pollution, high atom economy and good environmental benefit, and is one of the main research directions for producing hydrogen peroxide in the future. However, in order to realize industrialization of the method, the problems of safety and selectivity need to be solved, so that research needs to be carried out on a catalyst for directly synthesizing hydrogen peroxide by using hydrogen and oxygen to achieve the purpose of improving the selectivity and yield of the hydrogen peroxide.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is to provide an on-line evaluation device for a catalyst for directly synthesizing hydrogen peroxide by hydrogen and oxygen; the device can realize the direct processing and analysis of products and raw materials, has accurate and reliable data and high analysis efficiency, and can efficiently evaluate the performance of the catalyst for directly synthesizing hydrogen peroxide by oxyhydrogen.
In order to solve the technical problems, the utility model adopts the following technical scheme:
an on-line evaluation device for a catalyst for directly synthesizing hydrogen peroxide by hydrogen and oxygen comprises a feeding device, a reaction kettle and a product analysis and treatment device;
the feeding device comprises a gas feeding device and a solution feeding port;
the gas feed device comprises a first gas control conduit and a second gas control conduit;
the first gas control pipeline comprises a first gas storage tank, a first ball valve, a first gas filter, a pressure gauge A, a first pressure reducing valve, a pressure gauge B and a first one-way valve which are connected in sequence, and the first one-way valve is communicated with the reaction kettle through a pipeline;
the second gas control pipeline comprises a second gas storage tank, a second ball valve, a second gas filter, a pressure gauge C, a second pressure reducing valve, a pressure gauge D and a second one-way valve which are connected in sequence, and the second one-way valve is communicated with the reaction kettle through a pipeline;
the product analysis and treatment device comprises a gas phase analysis and treatment device and a liquid phase analysis and treatment device.
In some embodiments, the gas analysis processing apparatus comprises a third ball valve, a third filter, a first needle valve, a metering valve, a six-position valve, a dosing ring, and a gas chromatograph; the reaction kettle is sequentially connected and communicated with a third ball valve, a third filter, a first needle valve, a metering valve, a six-position valve, a quantitative ring and a gas chromatograph through pipelines.
In some embodiments, the liquid phase analytical processing device comprises a ceramic filtration membrane block, a third ball valve, a second needle valve, a calibration tank, a waste liquid tank, a small diaphragm pump, a deionized water tank, and an automatic potentiometric titrator; the ceramic filtering membrane resistance piece is arranged in the reaction kettle and is sequentially communicated with a third ball valve, a second needle valve, a calibration tank, a waste liquid tank and a small diaphragm pump through pipelines; the deionized water tank is communicated with the calibration tank through a pipeline; the automatic potentiometric titrator is communicated with the calibration tank through a pipeline.
In some embodiments, the pipeline between the first one-way valve and the reaction kettle and the pipeline between the ceramic filtering membrane block and the third ball valve are connected through a nitrogen back-flushing pipeline.
In some embodiments, a mechanical stirring device or a magnetic stirring device is arranged in the reaction kettle.
The utility model has the advantages of
The utility model can realize the direct processing and analysis of the product and the raw material, has accurate and reliable data and high analysis efficiency, and can efficiently evaluate the performance of the catalyst for directly synthesizing the hydrogen peroxide by the hydrogen and the oxygen
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural diagram of an on-line evaluation device for a catalyst for directly synthesizing hydrogen peroxide by hydrogen and oxygen.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent 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 obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The following disclosure provides many different embodiments, or examples, for implementing different features of the utility model. Specific examples of components and arrangements are described below to simplify the present disclosure. These are, of course, merely examples and are not intended to limit the utility model. For example, in the following description, forming a first feature over or on a second feature may include embodiments in which the first and second features are formed in direct contact, and may also include embodiments in which additional features may be formed between the first and second features, such that the first and second features may not be in direct contact.
Moreover, for convenience of description, descriptions related to "first", "second", etc. in the present invention are provided for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between the various embodiments can be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not be within the protection scope of the present invention.
At present, the main method for industrially producing hydrogen peroxide at home and abroad is an anthraquinone method, but has the problems of large device investment, high production cost, complex production process, large amount of byproducts, great environmental pollution and the like.
Based on this, please refer to fig. 1, the present invention provides an online evaluation device for a catalyst for directly synthesizing hydrogen peroxide from hydrogen and oxygen, which comprises a feeding device, a reaction kettle 200 and a product analysis and treatment device;
the feeding device comprises a gas feeding device 100 and a solution feeding port 140;
the gas feed apparatus 100 comprises a first gas control conduit 120 and a second gas control conduit 130;
the first gas control pipeline 120 comprises a first gas storage tank 121, a first ball valve 122, a first gas filter 123, a pressure gauge A124, a first pressure reducing valve 125, a pressure gauge B126 and a first one-way valve 127 which are connected in sequence, and the first one-way valve 127 is communicated with the reaction kettle 200 through a pipeline; it is understood that the first gas storage tank 121 can be used for storing hydrogen or a mixture of hydrogen and nitrogen;
the second gas control pipeline 130 comprises a second gas storage tank 131, a second ball valve 132, a second gas filter 133, a pressure gauge C134, a second pressure reducing valve 135, a pressure gauge D136 and a second one-way valve 137 which are connected in sequence, and the second one-way valve 137 is communicated with the reaction kettle 200 through a pipeline; it is understood that the second gas storage tank 131 can be used for storing oxygen or a mixture of oxygen and nitrogen;
the product analysis processing apparatus includes a gas phase analysis processing apparatus 300 and a liquid phase analysis processing apparatus 400;
the gas phase analysis processing 300 device comprises a third ball valve 301, a third filter 302, a first needle valve 303, a metering valve 304, a six-position valve 305, a quantitative ring 306 and a gas chromatograph 307; the reaction kettle 200 is sequentially connected and communicated with a third ball valve 301, a third filter 302, a first needle valve 303, a metering valve 304, a six-position valve 305, a quantitative ring 306 and a gas chromatograph 307 through pipelines;
the liquid phase analysis processing device 400 comprises a ceramic filtering membrane resistance piece 401, a third ball valve 402, a second needle valve 403, a calibration tank 408, a waste liquid tank 404, a small diaphragm pump 405, a deionized water tank 406 and an automatic potentiometric titrator 407; the ceramic filtering membrane resistance piece 401 is arranged in the reaction kettle and is sequentially communicated with a third ball valve 402, a second needle valve 403, a calibration tank 408, a waste liquid tank 404 and a small diaphragm pump 405 through pipelines; the deionized water tank 406 is communicated with the calibration tank 408 through a pipeline; the automatic potentiometric titrator 407 is communicated with the calibration tank 408 through a pipeline;
the pipeline between the first one-way valve 127 and the reaction kettle 200 is connected with the pipeline between the ceramic filtering membrane resistance piece 401 and the third ball valve 402 through a nitrogen back flushing pipeline 500; the nitrogen back-blowing pipeline 500 can prevent the ceramic filtering membrane resistance piece 401 from being blocked and play a role in emptying.
In certain preferred embodiments, a mechanical stirring device or a magnetic stirring device is disposed in the reaction vessel 200 to enhance mass transfer and to achieve thorough mixing of the materials in the reaction vessel.
On the other hand, the online evaluation method of the catalyst for directly synthesizing hydrogen peroxide by hydrogen and oxygen by using the online evaluation device of the utility model comprises the following steps:
1) filling a catalyst and a reaction medium solution into a reaction kettle;
2) introducing raw material gas: opening two gas pipelines, and adjusting the pressure and flow of the feed gas by using a valve;
3) reacting the raw material gas with a catalyst under a reaction condition;
4) gas phase analysis: part of gas phase after reaction enters a gas chromatograph 307 through a third ball valve 301, a third filter 302, a first needle valve 303, a metering valve 304, a six-position valve 305 and a quantitative ring 306 for direct analysis;
5) liquid phase analysis: after the reaction, part of the liquid phase passes through a third ball valve 402, a second needle valve 403 and a calibration tank 403 and then enters an automatic potentiometric titrator 407 for titration;
6) through gas chromatographic analysis and titration results of the liquid phase, the conversion rate of the raw materials and the selectivity of the hydrogen peroxide can be accurately calculated, and the performance of the catalyst can be further evaluated.
The operating pressure of the reaction kettle is as follows: 4MPa, operating temperature: 2 ℃.
Of course, only some of the specific numbers and configurations of the embodiments are shown here, and those skilled in the art will understand that the selection of the specific numbers and configurations will not have a substantial effect, and those skilled in the art can select other numbers and configurations without creative efforts without affecting the main concept of the present invention, and will not be further described herein.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments can be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, as for the embodiments of the double-sided tooth shoveling device and the material clamping method thereof, since the embodiments are basically similar to the embodiments of the material clamping device, the description is simple, and the relevant points can be referred to the partial description of the embodiments of the material clamping device.
In the description of the present specification, reference to the description of the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present specification. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
Furthermore, the various embodiments or examples and features of the various embodiments or examples described in this specification can be combined and combined by those skilled in the art without contradiction. The above description is only an embodiment of the present disclosure, and is not intended to limit the present disclosure. Various modifications and changes may occur to those skilled in the art to which the embodiments of the present disclosure pertain. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiments of the present specification should be included in the scope of the claims of the embodiments of the present specification.
Claims (5)
1. The utility model provides a catalyst on-line evaluation device of hydrogen peroxide is directly synthesized to oxyhydrogen which characterized in that: comprises a feeding device, a reaction kettle and a product analysis and treatment device;
the feeding device comprises a gas feeding device and a solution feeding port;
the gas feed device comprises a first gas control conduit and a second gas control conduit;
the first gas control pipeline comprises a first gas storage tank, a first ball valve, a first gas filter, a pressure gauge A, a first pressure reducing valve, a pressure gauge B and a first one-way valve which are connected in sequence, and the first one-way valve is communicated with the reaction kettle through a pipeline;
the second gas control pipeline comprises a second gas storage tank, a second ball valve, a second gas filter, a pressure gauge C, a second pressure reducing valve, a pressure gauge D and a second one-way valve which are connected in sequence, and the second one-way valve is communicated with the reaction kettle through a pipeline;
the product analysis and treatment device comprises a gas phase analysis and treatment device and a liquid phase analysis and treatment device.
2. The catalyst online evaluation device according to claim 1, characterized in that: the gas analysis processing device comprises a third ball valve, a third filter, a first needle valve, a metering valve, a six-position valve, a quantitative ring and a gas chromatograph; the reaction kettle is sequentially connected and communicated with a third ball valve, a third filter, a first needle valve, a metering valve, a six-position valve, a quantitative ring and a gas chromatograph through pipelines.
3. The catalyst online evaluation device according to claim 1, characterized in that: the liquid phase analysis processing device comprises a ceramic filtering membrane resistance piece, a third ball valve, a second needle valve, a calibration tank, a waste liquid tank, a small diaphragm pump, a deionized water tank and an automatic potentiometric titrator; the ceramic filtering membrane resistance piece is arranged in the reaction kettle and is sequentially communicated with a third ball valve, a second needle valve, a calibration tank, a waste liquid tank and a small diaphragm pump through pipelines; the deionized water tank is communicated with the calibration tank through a pipeline; the automatic potentiometric titrator is communicated with the calibration tank through a pipeline.
4. The on-line catalyst evaluation device according to claim 3, characterized in that: and the pipeline between the first one-way valve and the reaction kettle is connected with the pipeline between the ceramic filtering membrane blocking piece and the third ball valve through a nitrogen back-flushing pipeline.
5. The catalyst online evaluation device according to claim 1, characterized in that: and a mechanical stirring device or a magnetic stirring device is arranged in the reaction kettle.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120075813.2U CN215312295U (en) | 2021-01-11 | 2021-01-11 | Catalyst on-line evaluation device for directly synthesizing hydrogen peroxide by using hydrogen and oxygen |
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| CN202120075813.2U CN215312295U (en) | 2021-01-11 | 2021-01-11 | Catalyst on-line evaluation device for directly synthesizing hydrogen peroxide by using hydrogen and oxygen |
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| CN215312295U true CN215312295U (en) | 2021-12-28 |
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| CN202120075813.2U Active CN215312295U (en) | 2021-01-11 | 2021-01-11 | Catalyst on-line evaluation device for directly synthesizing hydrogen peroxide by using hydrogen and oxygen |
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