Material heating device of ultralow-temperature reaction kettle
By adding a circulation pipeline with heat exchange function in the ultra-low temperature reactor, the problems of low and uncontrollable heating efficiency of reactants are solved, rapid heating and temperature control are achieved, and liquid nitrogen use and process costs are reduced.
Patent Information
- Application Number
- CN202421358970.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-14
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-06-14
AI Technical Summary
In the ultra-low temperature reactor, the material heating process after the reaction is inefficient and uncontrollable, resulting in low production efficiency and increased process costs.
A circulation pipeline with heat exchange function is added between the discharge pipeline and the feed pipeline of the ultra-low temperature reactor, so that the reactants can be heated quickly during the circulation and transport, and the high-temperature reactants are cooled through the cold medium of the circulation pipeline to meet the process temperature requirements.
The rapid heating of ultra-low temperature reactants is achieved, reducing the use of liquid nitrogen, reducing process costs, and effectively controlling the temperature of reactants.
Smart Images
Figure CN222624575U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to a material heating device, and in particular to a material heating device for an ultra-low temperature reactor. Background Art
[0002] Ultra-low temperature reactors are frequently used in the chemical industry, especially in the pharmaceutical and chemical industry. This type of reactor generally uses a jacketed liquid nitrogen cooling system to perform ultra-low temperature reactions on raw materials. After the reaction is completed, the ultra-low temperature material obtained by the above reaction needs to be heated up. However, once liquid nitrogen-like cold media is introduced into the jacket of the reactor and becomes a flow channel for the cold media, hot water-like hot media often cannot be introduced.
[0003] Therefore, workers often spend hours waiting for ultra-low temperature reactants to heat up, resulting in low production efficiency. Some workers will also take the reactants out of the reactor and transfer them to a heating device for heating, but they often face the problem of uncontrollable heating rate of the reactants. When the temperature rises too fast, it is easy for the temperature of the reactants to soar and exceed the temperature required by the process. At this time, if a liquid nitrogen system is used to cool the high-temperature reactants, it will undoubtedly increase the process cost. Utility Model Content
[0004] The purpose of the utility model is to provide a material heating device for an ultra-low temperature reactor to solve the problems raised in the above background technology.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] A material heating device for an ultra-low temperature reactor, comprising:
[0007] The reactor has a cold medium channel and a liquid nitrogen channel on its side wall; a feed pipe is provided at one end of the reactor and a discharge pipe is provided at the other end; the discharge pipe is provided with a regulating valve;
[0008] A circulation pipeline, a heat medium channel is provided on its side wall; heat medium flows into the heat medium channel, and the output end of the heat medium channel is connected to the cold medium channel; one end of the circulation pipeline is connected to the feed pipeline, and the other end is connected to the discharge pipeline; the circulation pipeline is connected in series with a pump.
[0009] Further, the reactor comprises a reactor body and a first jacket;
[0010] The kettle body has a liquid nitrogen channel on its inner wall; one end of the kettle body is provided with the feeding pipe; the other end of the kettle body is provided with the discharging pipe;
[0011] The first jacket is sleeved on the outer wall of the kettle body, and the channel formed by sealing and enclosing the kettle body is the cold medium channel; the discharge pipe passes through and is sealed and connected to the first jacket.
[0012] Furthermore, the feed pipe is provided at the top end of the kettle body, and the discharge pipe is provided at the bottom end; the top end of the circulation pipe is connected to the feed pipe, and the bottom end is connected to the discharge pipe.
[0013] Further, the circulation pipeline includes a pipe body and a second jacket;
[0014] The tube body is used for conveying reactants, one end of which is connected to the feed pipe, and the other end is connected to the discharge pipe; the tube body is connected in series with a pump;
[0015] The second jacket is sleeved on the outer wall of the tube body, and the channel formed by sealing and enclosing the tube body is the heat medium channel; heat medium flows into the second jacket, and the output end of the second jacket is connected to the first jacket.
[0016] Furthermore, a medium input pipe is connected to the bottom of the second jacket for the heat medium to flow into the second jacket; a medium output pipe is connected to the top of the second jacket, and the medium output pipe is connected to the first jacket for the heat medium after heat exchange to flow into the first jacket.
[0017] Furthermore, a first control valve is provided on the medium input pipeline; and a second control valve is provided on the medium output pipeline.
[0018] Further, the pump may be a diaphragm pump.
[0019] Furthermore, the top end of the feed pipe is used for inputting raw materials; and the side wall of the feed pipe is connected to the circulation pipe.
[0020] Compared with the prior art, the beneficial effects of the utility model are:
[0021] By adding a circulation pipeline with a heat exchange function between the discharge pipeline and the feed pipeline of the material heating device of the ultra-low temperature reactor, the reactants flowing out of the reactor are circulated to the reactor while being rapidly heated. Even if the ultra-low temperature reactants are inevitably overheated due to rapid heating, the present application can also use the cold medium after heat exchange in the circulation pipeline to flow to the first jacket to cool the circulating high-temperature reactants in the kettle to meet the process temperature requirements. As a result, the material heating device of the ultra-low temperature reactor not only achieves rapid heating of ultra-low temperature reactants, but also greatly reduces the use of liquid nitrogen and reduces process costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0023] Figure 1 This is a schematic structural diagram of a rapid heating device for material circulation in an ultra-low temperature reactor according to an embodiment of the present application.
[0024] Reference numerals:
[0025] 10. kettle body; 11. discharge pipe; 110. regulating valve; 12. feed pipe; 13. first jacket;
[0026] 2. Pump; 3. Circulation pipeline; 30. Pipe body; 4. Medium input pipeline; 40. First control valve;
[0027] 5. Medium output pipeline; 50. Second control valve. DETAILED DESCRIPTION
[0028] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.
[0029] In the description of the present invention, it should be understood that the terms "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships conventionally placed when the product of the present invention is used, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.
[0031] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0032] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention may repeat reference numerals in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments discussed.
[0033] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.
[0034] The present invention provides a material heating device for a super low temperature reactor. Figure 1 The circulating material heat exchange device of the ultra-low temperature reactor comprises a reactor and a circulating pipeline 3.
[0035] The side wall of the reactor is provided with a cold medium channel and a liquid nitrogen channel. A feed pipe 12 is provided at one end of the reactor, and a discharge pipe 11 is provided at the other end. The discharge pipe 11 is provided with a regulating valve 110. A heat medium channel is provided on the side wall of the circulation pipe 3. Heat medium flows into the heat medium channel, and the output end of the heat medium channel is connected to the cold medium channel. One end of the circulation pipe 3 is connected to the feed pipe 12, and the other end is connected to the discharge pipe 11. The circulation pipe 3 is connected in series with a pump 2.
[0036] By adding a circulation pipe 3 with a heat exchange function between the discharge pipe 11 and the feed pipe 12 of the reactor, the reactants flowing out of the reactor are quickly heated while being circulated to the reactor. The cold medium after heat exchange in the circulation pipe 3 flows to the cold medium channel, and the circulating high-temperature reactants in the reactor can be cooled to meet the process temperature requirements.
[0037] Specifically,
[0038] The reaction kettle comprises a kettle body 10 and a first jacket 13. The first jacket 13 is arranged on the outer wall of the kettle body 10.
[0039] The kettle body 10 has a feeding pipe 12 at its top. The feeding pipe 12 is used for feeding materials. The top of the feeding pipe 12 is used for feeding raw materials. A discharge pipe 11 is installed at the bottom of the kettle body 10. The discharge pipe 11 is used for discharging reactants. A regulating valve 110 is connected to the discharge pipe 11. The discharge flow rate of the reactor is adjusted by the regulating valve 110. A liquid nitrogen channel is provided on the inner wall of the kettle body 10. Liquid nitrogen is introduced into the liquid nitrogen channel to maintain the ultra-low temperature reaction conditions of the material in the kettle body 10.
[0040] The first jacket 13 is arranged on the outer wall of the kettle body 10. A cooling medium can be passed into the first jacket 13. The bottom end of the first jacket 13 is penetrated by the discharge pipe 11, and the discharge pipe 11 and the first jacket 13 are sealed and connected.
[0041] When the raw materials are introduced into the kettle body 10 from the top of the feed pipe 12 , liquid nitrogen is introduced into the liquid nitrogen channel, so that the raw materials react in the reactor under ultra-low temperature conditions, and the reactants thus obtained are discharged from the discharge pipe 11 .
[0042] The circulation pipeline 3 includes a pipe body 30 and a second jacket. The second jacket is sleeved on the outer wall of the pipe body 30.
[0043] The pipe body 30 has one end connected to the discharge pipe 11 and the other end connected to the side wall of the feed pipe 12. A diaphragm pump is connected in series to the pipe body 30. The diaphragm pump drives the ultra-low temperature reactants flowing out of the discharge pipe 11 to flow to the feed pipe 12 through the pipe body 30 and enter the reactor.
[0044] The second jacket is sleeved on the outer wall of the tube body 30. A medium input pipeline 4 is connected near the bottom of the second jacket. Hot water can flow into the second jacket through the medium input pipeline 4. A first control valve 40 is provided on the medium input pipeline 4 to adjust the inflow of hot water. When the ultra-low temperature reactant flows through the tube body 30, the hot water flowing into the second jacket causes the reactant in the tube body 30 to heat up quickly. As a result, the reactant in the tube body 30 will inevitably overheat. A medium output pipeline 5 is connected near the top of the second jacket. The medium output pipeline 5 is also connected to the first jacket 13. As the hot water in the second jacket becomes cold water after heat exchange with the reactant in the tube body 30, the cold water can flow to the second jacket through the medium output pipeline 5. A second control valve 50 is provided on the medium output pipeline 5 to adjust the flow of cold water in the second jacket. When cold water flows to the first jacket 13 through the medium output pipe 5, the high-temperature reactants circulating into the reactor can be cooled to meet the process temperature requirements, without the need for cooling with liquid nitrogen, thereby reducing process costs.
[0045] The specific working method of the embodiment of the present application is as follows:
[0046] The raw materials are fed into the reactor through the feed pipe 12 , and liquid nitrogen is introduced into the liquid nitrogen channel, so that the raw materials undergo ultra-low temperature reaction in the reactor body 10 .
[0047] After the ultra-low temperature reaction is completed, the regulating valve 110 is opened, and the first control valve 40 and the second control valve 50 are adjusted. When the discharge of the reactor at the discharge pipe 11 is pumped back to the reactor by the diaphragm pump, it will flow through the circulation pipe 3. The hot water passed into the second jacket through the medium input pipe 4 causes the reactants in the pipe body 30 to heat up rapidly. At the same time, the hot water in the second jacket is converted into cold water through heat exchange, and then flows to the first jacket 13 to cool the circulating high-temperature reactants in the reactor to meet the process temperature requirements.
[0048] Based on the above embodiments, the present application has the following advantages:
[0049] The material heating device of the ultra-low temperature reactor is provided with a circulation pipeline 3 with a heat exchange function between the discharge pipeline 11 and the feed pipeline 12, so that the reactants flowing out of the reactor are quickly heated while being circulated to the reactor. Even if the temperature of the reactants is inevitably too high due to rapid heating, the cold medium after heat exchange in the circulation pipeline 3 can be used to flow to the first jacket 13 to cool the circulating high-temperature reactants in the kettle body 10 to meet the process temperature requirements. Therefore, the material heating device of the ultra-low temperature reactor not only achieves the rapid heating of ultra-low temperature reactants, but also greatly reduces the use of liquid nitrogen and reduces the process cost.
Claims
1. A material heating device for an ultra-low temperature reactor, characterized in that: The material heating device of the ultra-low temperature reactor comprises: The reactor has a cold medium channel and a liquid nitrogen channel on its side wall; a feed pipe is provided at one end of the reactor and a discharge pipe is provided at the other end; the discharge pipe is provided with a regulating valve; A circulation pipeline, a heat medium channel is provided on its side wall; heat medium flows into the heat medium channel, and the output end of the heat medium channel is connected to the cold medium channel; one end of the circulation pipeline is connected to the feed pipeline, and the other end is connected to the discharge pipeline; the circulation pipeline is connected in series with a pump.
2. The material heating device for the ultra-low temperature reactor according to claim 1, characterized in that: The reactor comprises a reactor body and a first jacket; The kettle body has a liquid nitrogen channel on its inner wall; one end of the kettle body is provided with the feeding pipe; the other end of the kettle body is provided with the discharging pipe; The first jacket is sleeved on the outer wall of the kettle body, and the channel formed by sealing and enclosing the kettle body is the cold medium channel; the discharge pipe passes through and is sealed and connected to the first jacket.
3. The material heating device for the ultra-low temperature reactor according to claim 2, characterized in that: The top of the kettle body is provided with the feeding pipe, and the bottom is provided with the discharging pipe; the top of the circulation pipe is connected to the feeding pipe, and the bottom is connected to the discharging pipe.
4. The material heating device for the ultra-low temperature reactor according to claim 2, characterized in that: The circulation pipeline includes a pipe body and a second jacket; The tube body is used for conveying reactants, one end of which is connected to the feed pipe, and the other end is connected to the discharge pipe; the tube body is connected in series with a pump; The second jacket is sleeved on the outer wall of the tube body, and the channel formed by sealing and enclosing the tube body is the heat medium channel; heat medium flows into the second jacket, and the output end of the second jacket is connected to the first jacket.
5. The material heating device for the ultra-low temperature reactor according to claim 4, characterized in that: A medium input pipe is connected to the bottom of the second jacket for the heat medium to flow into the second jacket; a medium output pipe is connected to the top of the second jacket, and the medium output pipe is connected to the first jacket for the heat medium to flow into the first jacket after heat exchange.
6. The material heating device for the ultra-low temperature reactor according to claim 5, characterized in that: The medium input pipeline is provided with a first control valve; the medium output pipeline is provided with a second control valve.
7. The material heating device for the ultra-low temperature reactor according to claim 4, characterized in that: The pump may be a diaphragm pump.
8. The material heating device for the ultra-low temperature reactor according to claim 2, characterized in that: The top end of the feed pipe is used for inputting raw materials; the side wall of the feed pipe is connected to the circulation pipe.