Purification device applied to butanol solution

Abstract

The utility model relates to the technical field of butanol solution purification, and discloses a purification device applied to a butanol solution. The heat exchange circular ring is additionally arranged between the distillation tower and the condensation assembly, on one hand, the condensation speed of steam can be increased, on the other hand, the heat exchange circular ring can absorb heat of steam at an outlet in the top end of the distillation tower, and the heat can be used for heating a butanol solution in the buffer storage tank under the cooperation of the heating jacket and the circulating pipe; the initial temperature of the butanol solution is increased, energy consumed by heating in the reboiler in the later period is reduced, in the process, heat in the heating buffer storage tank does not need to be additionally introduced, and therefore the purposes of energy conservation and environment protection are achieved. And on the other hand, in the feeding process of the reboiler, feeding can be conducted through the first feeding opening through the feeding pipe, the buffering storage tank can be used for injecting materials into the reboiler through the second discharging opening, and therefore the efficiency of injecting the materials into the reboiler is greatly improved, and the production efficiency is further improved.

Description

Technical Field

[0001] This application relates to the technical field of butanol solution purification, and particularly relates to a purification device applied to butanol solution. Background Art

[0002] Butanol is a saturated alcohol containing four carbon atoms, with the molecular formula C4H9OH. Butanol is toxic and is mainly used as a chemical solvent or fuel. Therefore, when purifying butanol, it needs to be purified multiple times to obtain purer butanol.

[0003] In the prior art, when purifying butanol, a reboiler is usually used for heating. After the solution is heated by the reboiler, the gas phase enters the distillation column for distillation, and then butanol and water are separated after condensation and reflux, so as to achieve the purpose of purification. However, in the prior art, a large amount of heat is consumed to heat the butanol solution in the reboiler during butanol purification. The heat loss is serious, which does not meet the requirements of energy conservation and environmental protection. Utility Model Content

[0004] In view of the above problems, the embodiments of this application provide a purification device applied to butanol solution, which can reduce the heat loss during the purification process of butanol solution, thereby saving energy consumption, meeting the requirements of energy conservation and environmental protection, and at the same time can accelerate the liquid injection speed into the reboiler and improve the overall working efficiency.

[0005] According to one aspect of the embodiments of this application, a purification device applied to butanol solution is provided. The purification device applied to butanol solution includes a reboiler, a distillation column, a condensation component, and a reflux device that are connected in sequence and communicated with each other. A heating component is arranged in the reboiler. A first feeding port is arranged on the reboiler, and a feeding pipe is communicated at the first feeding port. A steam pipe is arranged on the reboiler, and the other end of the steam pipe is communicated with the distillation column. The top of the distillation column is communicated with the condensation component through a heat exchange ring. The tail end of the condensation component is communicated with the reflux device. The reflux device and the distillation column are connected and communicated through a reflux pipe. A buffer storage tank is supported by a bracket at the top of the reboiler. A second feeding port is arranged at the top of the buffer storage tank, and a second discharging port is arranged at the bottom of the buffer storage tank. The second discharging port is communicated with the reboiler through a valve body. A heating jacket is arranged upward on the outer periphery of the buffer storage tank. The heat exchange ring includes a gas flow channel and a liquid flow channel. The gas flow channel is respectively communicated with the distillation column and the condensation component. Both ends of the gas flow channel are respectively communicated with the top end and the bottom end of the heating jacket through a circulation pipe. A circulation pump is arranged on the circulation pipe.

[0006] In some embodiments, the heating jacket includes a sleeve externally sleeved on the buffer storage tank. A plurality of first heat exchange tubes are horizontally arranged in the buffer storage tank. Both ends of the first heat exchange tube are open and communicated with the jacket, and the first heat exchange tube is hermetically connected to the buffer storage tank.

[0007] In some embodiments, the heat exchange ring includes a flow guide cylinder. Openings are provided at both ends of the flow guide cylinder and are respectively communicated with the distillation column and the condensation assembly. A spiral second heat exchange tube is arranged in the flow guide cylinder. Both ends of the second heat exchange tube penetrate and extend to the outside of the flow guide cylinder and are communicated with the circulation pipe.

[0008] In some embodiments, a feeding pump is arranged at the feeding pipe. The outlet end of the feeding pump is communicated with a first material distribution pipe and a second material distribution pipe through a three-way valve. The first material distribution pipe is communicated with the first feeding port, and the second material distribution pipe is communicated with the second feeding port.

[0009] In some embodiments, a liquid level gauge is arranged at the reboiler.

[0010] In some embodiments, at least two thermometers are arranged on the circulation pipe.

[0011] The beneficial effects in this application are as follows: In the embodiments of this application, by adding a heat exchange ring between the distillation column and the condensation assembly, on the one hand, the condensation speed of the steam can be accelerated, and on the other hand, the heat exchange ring can absorb the heat of the steam at the top outlet of the distillation column. In cooperation with the heating jacket and the circulation pipe, this heat can be used to heat the butanol solution in the buffer storage tank, thereby increasing the initial temperature of the butanol solution in the heat exchange storage tank. Furthermore, when the butanol solution in the heated buffer storage tank enters the reboiler, it has a certain initial temperature, reducing the energy loss during the later heating in the reboiler. And since the heat in the heated buffer storage tank does not need to be introduced additionally during this process, the purpose of energy conservation and environmental protection is achieved. On the other hand, during the feeding process of the reboiler, feeding can be carried out through the feeding pipe via the first feeding port, and the buffer storage tank can also be used to inject materials into the reboiler through the second discharging port, thus greatly increasing the feeding efficiency into the reboiler and further improving the production efficiency.

[0012] The above description is only an overview of the technical solution of this application. In order to be able to understand the technical means of this application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of this application more obvious and understandable, the specific embodiments of this application are specifically given below. Brief Description of the Drawings

[0013] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the following detailed description of the preferred embodiments. The drawings are only for the purpose of illustrating the preferred embodiments and are not considered to be a limitation of the present application. Moreover, throughout the drawings, the same reference numerals are used to denote the same components. In the drawings:

[0014] Figure 1 FIG. is a schematic diagram of the overall structure of a purification device for butanol solution provided by an embodiment of the present application;

[0015] Figure 2 FIG.

[0014] is a schematic diagram of the vertical cross-sectional structure at the buffer storage tank provided by an embodiment of the present application;

[0016] Figure 3 FIG. Figure 1 is a schematic diagram of the horizontal cross-sectional structure at the buffer storage tank provided by an embodiment of the present application;

[0017] Figure 4 FIG. is a schematic diagram of the cross-sectional structure at the heat exchange ring provided by an embodiment of the present application.

[0018] The reference numerals in the specific embodiments are as follows:

[0019] Purification device 100 for butanol solution, reboiler 110, first charging port 111, steam pipe 112, liquid level gauge 113, distillation column 120, condensation group 130, reflux device 140, reflux pipe 141, charging pipe 150, charging pump 151, first distribution pipe 152, second distribution pipe 153, heat exchange ring 160, circulation pipe 161, circulation pump 161a, thermometer 161b, draft tube 162, second heat exchange tube 163, buffer storage tank 170, second charging port 171, second discharging port 172, heating jacket 173, sleeve 173a, first heat exchange tube 173b. Specific Embodiments

[0020] Hereinafter, embodiments of the technical solutions of the present application will be described in detail with reference to the drawings. The following embodiments are only used to illustrate the technical solutions of the present application more clearly, and thus are only examples and cannot be used to limit the protection scope of the present application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "including" and "having" and any variations thereof in the specification and claims of the present application and the above drawings are intended to cover non-exclusive inclusion.

[0021] Specifically, please refer to Figures 1 to 4 , Figure 1 which is a schematic diagram of the overall structure of a purification device for butanol solution provided by an embodiment of the present application,Figure 2 Schematic vertical cross-sectional structure diagram at the buffer storage tank provided by the embodiment of the present application, Figure 3 Schematic horizontal cross-sectional structure diagram at the buffer storage tank provided by the embodiment of the present application, Figure 4Schematic cross-sectional structure diagram of the heat exchange ring provided by the embodiment of the present application. The purification device 100 for butanol solution includes a reboiler 110, a distillation column 120, a condenser group 130, and a reflux device 140 that are connected in sequence. The specific working principle is that after the butanol solution is heated by the heating component in the reboiler 110, its vapor enters the distillation column 120, is distilled in the distillation column 120, condensed by the condenser group 130, and introduced into the reflux device 140. Subsequently, liquid water is separated in the reflux device 140 and the butanol solution is refluxed, so as to continuously circulate and separate the water in the butanol solution. Since the reflux principle of the butanol solution using the reboiler 110 and the reflux device 140 is not the main inventive point of the present application and has been fully disclosed in the prior art, no further elaboration will be made here. A heating component (not shown in the figure) is provided in the reboiler 110, and the heating component is used to heat the solution in the reboiler 110. A first feeding port 111 is provided on the reboiler 110, and a feeding pipe 150 is connected to the first feeding port 111. The feeding pipe 150 feeds the reboiler 110 through the first feeding port 111. A steam pipe 112 is provided on the reboiler 110, and the other end of the steam pipe 112 is connected to the distillation column 120. The steam pipe 112 introduces the steam generated in the reboiler 110 into the distillation column 120 for distillation. The top of the distillation column 120 is connected to the condenser group 130 through a heat exchange ring 160, and the tail end of the condenser group 130 is connected to the reflux device 140. The steam at the top of the distillation column 120 enters the reflux device 140 after passing through the heat exchange ring 160 and the condenser group 130 in sequence. The reflux device 140 is connected to the distillation column 120 through a reflux pipe 141. After the water is separated by the reflux device 140, the remaining butanol solution is refluxed to the distillation column 120 through the reflux pipe 141. A buffer storage tank 170 is supported by a bracket at the top of the reboiler 110. The buffer storage tank 170 is used to store the butanol stock solution and preheat it, so as to reduce the heating time after the butanol stock solution enters the reboiler 110. A second feeding port 171 is provided at the top of the buffer storage tank 170, and the butanol stock solution enters the buffer storage tank 170 through the second feeding port 171. A second discharging port 172 is provided at the bottom of the buffer storage tank 170, and the second discharging port 172 is connected to the reboiler 110 through a valve body. The butanol solution in the buffer storage tank 170 can be directly injected into the reboiler 110 through the second discharging port 172. A heating jacket 173 is provided upward on the outer periphery of the buffer storage tank 170, and the heating jacket 173 is used to heat the butanol stock solution in the buffer storage tank 170. The heat exchange ring 160 includes a gas flow channel and a liquid flow channel. The gas flow channel is respectively connected to the distillation column 120 and the condenser group 130. The gas in the distillation column 120 flows into the condenser group 130 through the gas flow channel.Both ends of the gas flow channel are respectively connected to the top and bottom of the heating jacket 173 through the circulation pipe 161. A circulation pump 161a is arranged on the circulation pipe 161. During the working process, the circulation pump 161a drives the heat-conducting medium in the circulation pipe 161 to circulate. The circulation direction of the heat-conducting medium is successively: gas flow channel, circulation pipe 161, heating jacket 173, circulation pipe 161, gas flow channel. During the circulation process, the heat-conducting medium absorbs the heat in the heat exchange ring 160 and heats the butanol stock solution in the buffer storage tank 170.

[0022] As can be seen from the above, in the embodiment of the present application, by adding a heat exchange ring 160 between the distillation column 120 and the condenser 130, on the one hand, the condensation speed of the steam can be accelerated, and on the other hand, the heat exchange ring 160 can absorb the heat of the steam at the top outlet of the distillation column 120. In cooperation with the heating jacket 173 and the circulation pipe 161, this heat can be used to heat the butanol solution in the buffer storage tank 170, thereby increasing the initial temperature of the butanol solution in the heat exchange storage tank, and further enabling the butanol solution in the heating buffer storage tank 170 to have a certain initial temperature when it enters the reboiler 110, reducing the energy loss during the later heating in the reboiler 110. And because in this process, the heat in the heating buffer storage tank 170 does not need to be introduced additionally, it achieves the purpose of energy conservation and environmental protection. On the other hand, during the feeding process of the reboiler 110, it can be fed through the feeding pipe 150 via the first feeding port 111, and the buffer storage tank 170 can also be used to inject materials into the reboiler 110 through the second discharging port 172, thereby greatly increasing the feeding efficiency into the reboiler 110. Further, the production efficiency is improved.

[0023] In some embodiments, the heating jacket 173 includes a sleeve 173a externally sleeved on the buffer storage tank 170. A plurality of first heat exchange tubes 173b are horizontally arranged in the buffer storage tank 170. Both ends of the first heat exchange tube 173b are open and communicated to the jacket. The first heat exchange tube 173b is hermetically connected to the buffer storage tank 170, that is, the inner cavity of the first heat exchange tube 173b is not communicated with the inner cavity of the buffer storage tank 170.

[0024] In the embodiment of the present application, through the above settings, after the heat-conducting medium enters the sleeve 173a, it can increase its contact area with the butanol solution in the buffer storage tank 170 through the first heat exchange tube 173b, further improving the heat exchange efficiency.

[0025] In some embodiments, the heat exchange ring 160 includes a flow guide cylinder 162. Both ends of the flow guide cylinder 162 are provided with openings and are respectively connected to the distillation column 120 and the condensation assembly 130. A spiral second heat exchange tube 163 is arranged inside the flow guide cylinder 162. Both ends of the second heat exchange tube 163 penetrate and extend to the outside of the flow guide cylinder 162 and are connected to the circulation pipe 161. In the embodiments of the present application, the flow guide cylinder 162 serves as a gas flow channel, and the second heat exchange tube 163 serves as a liquid flow channel. Through the above arrangement, the spiral arrangement of the second heat exchange tube 163 can improve the heat exchange efficiency inside the flow guide cylinder 162, and thus more quickly complete the heat exchange process of the steam inside the flow guide cylinder 162.

[0026] In some embodiments, a feeding pump 151 is arranged at the feeding pipe 150. The outlet end of the feeding pump 151 is connected to a first distribution pipe 152 and a second distribution pipe 153 through a three-way valve. The first distribution pipe 152 is connected to the first feeding port 111, and the second distribution pipe 153 is connected to the second feeding port 171. In the embodiments of the present application, through the above arrangement, the three-way valve can be used to control the feeding of the feeding pump 151 to the reboiler 110 or to the buffer storage tank 170. When the reboiler 110 needs to be fed, the three-way valve is controlled to connect the feeding pipe 150 to the first feeding port 111. After the reboiler 110 is fed, the three-way valve can be adjusted to pump the raw material in the feeding pipe 150 into the buffer storage tank 170 by the feeding pump 151.

[0027] In some embodiments, a liquid level gauge 113 is arranged at the reboiler 110. In the embodiments of the present application, through the above arrangement, it is convenient to detect the liquid volume inside the reboiler 110.

[0028] In some embodiments, at least two thermometers 161b are arranged on the circulation pipe 161. In the embodiments of the present application, through the above arrangement, the two thermometers 161b can be respectively arranged on the circulation pipe 161 on both sides of the heating jacket 173, which is convenient for the operator to grasp the inlet temperature and the outlet temperature of the heating jacket 173 in real time.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be covered within the scope of the claims and the specification of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A purification device for butanol solution, characterized in that: It includes a reboiler, a distillation tower, a condensation assembly and a reflux device which are connected in sequence; The reboiler is provided with a heating component, the reboiler is provided with a first feeding port, the first feeding port is connected to a feeding pipe, the reboiler is provided with a steam pipe, the other end of the steam pipe is connected to the distillation tower, the top of the distillation tower is connected to the condensation component through a heat exchange ring, the tail end of the condensation component is connected to the reflux device, and the reflux device and the distillation tower are connected through a reflux pipe; A buffer storage tank is supported on the top of the reboiler by a bracket, a second loading port is provided on the top of the buffer storage tank, a second unloading port is provided on the bottom of the buffer storage tank and the second unloading port is connected to the reboiler through a valve body, and a heating jacket is provided on the outer circumference of the buffer storage tank; The heat exchange ring includes a gas flow channel and a liquid flow channel. The gas flow channel is connected to the distillation tower and the condensation component respectively. The two ends of the gas flow channel are connected to the top and bottom ends of the heating jacket respectively through a circulation pipe. A circulation pump is provided on the circulation pipe.

2. The purification device for butanol solution according to claim 1, characterized in that: The heating jacket comprises a sleeve outerly connected to the buffer storage tank, a plurality of first heat exchange tubes are horizontally arranged in the buffer storage tank, both ends of the first heat exchange tubes are respectively open and connected to the jacket, and the first heat exchange tubes are closed and connected to the buffer storage tank.

3. The purification device for butanol solution according to claim 1, characterized in that: The heat exchange ring includes a guide tube, both ends of which are provided with openings and are respectively connected to the distillation tower and the condensation component, a spiral second heat exchange tube is provided in the guide tube, both ends of the second heat exchange tube pass through and extend to the outside of the guide tube and are connected to the circulation pipe.

4. The purification device for butanol solution according to claim 1, characterized in that: A feeding pump is provided at the feeding pipe, and an outlet end of the feeding pump is connected to a first feeding pipe and a second feeding pipe through a three-way valve. The first feeding pipe is connected to the first feeding port, and the second feeding pipe is connected to the second feeding port.

5. The purification device for butanol solution according to claim 1, characterized in that: The reboiler is provided with a liquid level gauge.

6. The purification device for butanol solution according to claim 1, characterized in that: At least two thermometers are arranged on the circulation pipe.

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