A butane recovery cycle system

Abstract

The utility model relates to the technical field of chemical industry, concretely relates to a kind of butane recycling circulating system;Through the combined use of condenser body, heat exchanger body, evaporator body and plate heat exchanger body, the efficient recovery and secondary recycling of butane waste liquid are realized, the recovery efficiency is significantly improved, at the same time, pry block type design simplifies system structure, it is convenient to install and disassemble, reduces operation difficulty and maintenance cost, it helps to realize continuous production, in addition, system controls process through switch valve, without repeatedly disassembling device, reduce energy consumption, and reduce waste liquid discharge, thereby reduce environmental pollution, the system not only improves butane recycling rate, also reduces production cost, realizes the dual goal of environmental protection and high efficiency, has wide application prospect in chemical industry.

Description

Technical Field

[0001] This utility model relates to the field of chemical technology, and in particular to a butane recovery and recycling system. Background Technology

[0002] Butane is an important raw material in chemical production and is widely used in synthetic rubber, plastics and other fields. However, the butane waste liquid generated in the reaction tower is usually treated as waste liquid or sold directly, resulting in resource waste. Some chemical plants have tried to recycle butane waste liquid through simple equipment in order to achieve resource reuse. Although these attempts reflect the original intention of resource conservation to a certain extent, the recycling effect is not ideal due to the limitations of technical means.

[0003] However, the existing butane waste liquid recycling efficiency is low, and a large amount of butane cannot be effectively recovered, resulting in resource waste. Secondly, traditional waste storage methods are prone to environmental pollution, and the energy consumption during the recycling process is high, increasing production costs. In addition, the existing recycling system has a complex structure, is inconvenient to disassemble and install, and is difficult to achieve continuous production, which further restricts the promotion and application of butane recycling. Utility Model Content

[0004] The purpose of this invention is to provide a butane recovery and recycling system, which aims to solve the problems of low recovery efficiency of existing butane waste liquid, large amounts of butane not being effectively recovered, resulting in resource waste, and traditional waste storage methods that easily lead to environmental pollution and high energy consumption during the recovery process, increasing production costs. In addition, the existing recovery system has a complex structure, is inconvenient to disassemble and install, and is difficult to achieve continuous production, further limiting the technical problems of the promotion and application of butane recovery.

[0005] To achieve the above objectives, this utility model employs a butane recovery and circulation system, comprising a condenser body, a heat exchanger body, a plate heat exchanger body, and an evaporator body. The condenser body is equipped with a butane inlet valve and a butane outlet valve. The heat exchanger body is equipped with a first heat exchanger valve, a second heat exchanger valve, and a third heat exchanger valve. The plate heat exchanger body is equipped with a first plate heat exchanger valve and a second plate heat exchanger valve. The evaporator body is equipped with a first evaporator valve, a second evaporator valve, a third evaporator valve, and an evaporator safety valve. The butane outlet valve is connected to the heat exchanger body, and a heat exchanger temperature sensor is installed between the butane outlet valve and the heat exchanger body. The third heat exchanger valve is connected to the evaporator body, the plate heat exchanger body is connected to the evaporator body, and the third evaporator valve is connected to the heat exchanger body.

[0006] The condenser body is also equipped with a first condenser valve, a second condenser valve, and a condenser safety valve. One end of the first condenser valve is the circulating cooling water supply end, and the second condenser valve is connected to the plate heat exchanger body.

[0007] Wherein, one end of the first heat exchanger valve is a butane outlet, and one end of the second heat exchanger valve and the second evaporator valve is a drain outlet.

[0008] Wherein, one end of the valve of the first plate heat exchanger is the cooling ethylene glycol outlet end, and one end of the valve of the second plate heat exchanger is the ethylene glycol inlet end.

[0009] The first evaporator valve has one end as the return end of the circulating cooling water, and an evaporator temperature sensor is installed between the third evaporator valve and the evaporator body.

[0010] Flanges are provided at one end of the first evaporator valve, one end of the first plate heat exchanger valve, one end of the second plate heat exchanger valve, one end of the butane inlet valve, one end of the first condenser valve, the first heat exchanger valve, and the drain end.

[0011] This utility model discloses a butane recovery and recycling system. Through the combined use of the condenser body, the heat exchanger body, the evaporator body, and the plate heat exchanger body, it achieves efficient recovery and secondary recycling of butane waste liquid, significantly improving recovery efficiency. Simultaneously, the skid-mounted design simplifies the system structure, facilitates installation and disassembly, reduces operational difficulty and maintenance costs, and contributes to continuous production. Furthermore, the system controls the process through valve switching, eliminating the need for repeated disassembly of the equipment, reducing energy consumption and waste liquid discharge, thereby mitigating environmental pollution. This system not only improves the butane recovery and utilization rate but also reduces production costs, achieving the dual goals of environmental protection and high efficiency, and has broad application prospects in the chemical industry. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the butane recovery and recycling system of this utility model.

[0014] 1-Condenser body, 2-Heat exchanger body, 3-Plate heat exchanger body, 4-Evaporator body, 5-Butane inlet valve, 6-Butane outlet valve, 7-First heat exchanger valve, 8-Second heat exchanger valve, 9-Third heat exchanger valve, 10-First plate heat exchanger valve, 11-Second plate heat exchanger valve, 12-First evaporator valve, 13-Second evaporator valve, 14-Third evaporator valve, 15-Evaporator safety valve, 16-Heat exchanger temperature sensor, 17-First condenser valve, 18-Second condenser valve, 19-Condenser safety valve, 20-Evaporator temperature sensor, 21-Flange connection plate. Detailed Implementation

[0015] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0016] Please see Figure 1 This utility model provides a butane recovery and circulation system, including a condenser body 1, a heat exchanger body 2, a plate heat exchanger body 3, and an evaporator body 4. The condenser body 1 is equipped with a butane inlet valve 5 and a butane outlet valve 6. The heat exchanger body 2 is equipped with a first heat exchanger valve 7, a second heat exchanger valve 8, and a third heat exchanger valve 9. The plate heat exchanger body 3 is equipped with a first plate heat exchanger valve 10 and a second plate heat exchanger valve 11. The evaporator body 4 is equipped with a first evaporator valve 12, a second evaporator valve 13, a third evaporator valve 14, and an evaporator safety valve 15. The butane outlet valve 6 is connected to the heat exchanger body 2, and a heat exchanger temperature sensor 16 is installed between the butane outlet valve 6 and the heat exchanger body 2. The third heat exchanger valve 9 is connected to the evaporator body 4. The plate heat exchanger body 3 is connected to the evaporator body 4, and the third evaporator valve 14 is connected to the heat exchanger body 2.

[0017] In this embodiment, by recycling the butane solution, the butane is passed through auxiliary equipment including the condenser body 1, the heat exchanger body 2, the evaporator body 4, and the plate heat exchanger body 3. The useful butane in the waste butane is then evaporated again and recycled for secondary use through temperature adjustments. This method is more widely applicable to butane waste recovery systems in chemical plants. With a single equipment investment, butane can be sustainably regenerated annually, improving butane recovery and utilization rates, increasing production capacity, and solving the problems of butane waste and production costs in the original process. This addresses the butane recovery and recycling issues in most chemical plants.

[0018] Furthermore, the condenser body 1 is also provided with a first condenser valve 17, a second condenser valve 18 and a condenser safety valve 19. One end of the first condenser valve 17 is the circulating cooling water supply end, and the second condenser valve 18 is connected to the plate heat exchanger body.

[0019] In this embodiment, by adding the first condenser valve 17, the second condenser valve 18, and the condenser safety valve 19 to the condenser body 1, not only is a stable supply and recovery of circulating cooling water achieved, but the safety valve design also ensures the safe operation of the condenser under high pressure. This design not only improves the safety of the system, but also enables the system to flexibly adjust the flow rate of cooling water according to production needs, further optimizing the butane recovery efficiency.

[0020] Furthermore, one end of the first heat exchanger valve 7 is a butane discharge port, and one end of the second heat exchanger valve 8 and the second evaporator valve 13 is a drain port.

[0021] In this embodiment, by using the first heat exchanger valve 7 on the heat exchanger body 2 as the butane discharge port, and the second heat exchanger valve 8 and the second evaporator valve 13 as the drain outlet, the waste liquid and qualified butane are effectively separated during the butane recovery process. This design simplifies the recovery process, reduces the workload of subsequent processing, avoids the pollution of the recovered butane by the waste liquid, and improves the purity of the recovered butane.

[0022] Furthermore, one end of the first plate heat exchanger valve 10 is the cooling glycol outlet end, and one end of the second plate heat exchanger valve 11 is the glycol inlet end.

[0023] In this embodiment, by using the first plate heat exchanger valve 10 and the second plate heat exchanger valve 11, which are respectively provided on the plate heat exchanger body 3 as the outlet and inlet of cooling ethylene glycol, the recycling of ethylene glycol in the system is realized. This design not only improves the heat exchange efficiency but also reduces the consumption of ethylene glycol and lowers the production cost. At the same time, ethylene glycol, as a cooling medium, helps to maintain the temperature stability inside the system and further optimizes the recovery effect of butane.

[0024] Furthermore, one end of the first evaporator valve 12 is the return end of the circulating cooling water, and an evaporator temperature sensor 20 is provided between the third evaporator valve 14 and the evaporator body 4.

[0025] In this embodiment, this design not only improves the evaporation efficiency of the evaporator but also ensures the stability of the quality of the recovered butane. At the same time, the real-time monitoring function of the temperature sensor enables the system to automatically adjust the operating parameters according to the actual situation, further improving the system's intelligence level.

[0026] Furthermore, flange connection plates 21 are provided at one end of the first evaporator valve 12, one end of the first plate heat exchanger valve 10, one end of the second plate heat exchanger valve 11, one end of the butane inlet valve 5, one end of the first condenser valve 17, the first heat exchanger valve 7, and the drain end.

[0027] In this embodiment, this design not only reduces the system's maintenance costs but also improves the system's flexibility and scalability. When the system configuration needs to be adjusted or maintenance is required, workers can quickly disassemble and install the relevant components, thereby shortening downtime and improving production efficiency.

[0028] In this invention, the first condenser valve 17 and the second condenser valve 18 on the condenser body 1 are first opened, and the first plate heat exchanger valve 10 and the second plate heat exchanger valve 11 on the plate heat exchanger body 3 are opened simultaneously, so that the ethylene glycol enters the next process after heat exchange. At this time, the circulating cooling water in the plate heat exchanger body 3 is introduced into the evaporator body 4, and the circulating cooling water returning from the evaporator body 4 opens the first evaporator valve 12 to enter the cooling water return system.

[0029] In this invention, when the first condenser valve 17 and the second condenser valve 18 are opened, the butane inlet valve 5 is simultaneously opened to allow butane to enter the condenser body 1, and the butane outlet valve 6 is opened. The temperature of the butane is observed through the heat exchanger temperature sensor 16. When the temperature reaches the set value, the third heat exchanger valve 9 is opened, and the butane enters the evaporator body 4. At this time, the temperature of the evaporator temperature sensor 20 is observed. When the temperature reaches the set value, the third evaporator valve 14 is opened, and the butane enters the heat exchanger body 2. At the same time, the first heat exchanger valve 7 is opened to allow the butane to be recovered and used in the next process. The butane solution is first cooled down by the condenser body 1, and then the butane is used as both a refrigerant and a heat medium by the heat exchanger body 2. The butane solution is evaporated by the evaporator body 4 to obtain high-purity butane, which is then used as a heat medium to enter the heat exchanger body 2. The qualified butane is output to the next process through the first heat exchanger valve 7.

[0030] In this utility model, when the liquid accumulation at the bottom of the evaporator body 4 and the heat exchanger body 2 reaches a certain value, the second evaporator valve 13 and the second heat exchanger valve 8 are opened, and the waste liquid is discharged through the sewage pipe to the designated waste liquid collection pool in the factory area for further treatment.

[0031] In this utility model, when the pressure inside the condenser body 1 reaches a set value, the condenser safety valve 19 will automatically discharge to ensure the safety of the condenser body 1; when the pressure inside the evaporator body 4 reaches a set value, the evaporator safety valve 15 will automatically discharge to ensure the safety of the evaporator body 4.

[0032] In this invention, after the butane recovery process is completed, butane can be recovered intermittently or continuously depending on the production schedule of different factories. This depends on the production time of the previous process. The butane is recovered in a cyclical manner according to the above steps.

[0033] In this invention, the system is designed as a skid, with the equipment, valves, and pipes all mounted on it. The overall design is compact and small. The skid-mounted piping system is connected to external pipes using the flange connection plate 21, facilitating installation and disassembly. This design is convenient for workers to install.

[0034] This utility model has the following four beneficial effects:

[0035] 1. This design can be used simply by connecting it to the cooling water system, ethylene glycol system and butane system pipelines. The skid-mounted assembly system is easy to connect to and disassemble from the butane system.

[0036] 2. The entire butane recovery system can be controlled simply by switching valves on and off, saving time on equipment installation and eliminating the need for repeated assembly time and manpower.

[0037] 3. This process is applicable to butane recovery systems with different pressures and flow rates.

[0038] 4. The butane recovery system achieves the goal of recycling butane, extracting butane from the butane solution for reuse. The equipment is environmentally friendly for refining butane, saving workers the work of on-site preparation and dismantling of equipment, improving the recovery efficiency of butane for intermittent use, saving the economic and time costs of treating butane waste liquid in the factory, and turning waste into treasure.

[0039] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. A butane recovery and recycling system, characterized in that, The system includes a condenser body, a heat exchanger body, a plate heat exchanger body, and an evaporator body. The condenser body is equipped with a butane inlet valve and a butane outlet valve. The heat exchanger body is equipped with a first heat exchanger valve, a second heat exchanger valve, and a third heat exchanger valve. The plate heat exchanger body is equipped with a first plate heat exchanger valve and a second plate heat exchanger valve. The evaporator body is equipped with a first evaporator valve, a second evaporator valve, a third evaporator valve, and an evaporator safety valve. The butane outlet valve is connected to the heat exchanger body, and a heat exchanger temperature sensor is installed between the butane outlet valve and the heat exchanger body. The third heat exchanger valve is connected to the evaporator body, and the plate heat exchanger body is connected to the evaporator body. The third evaporator valve is also connected to the heat exchanger body.

2. The butane recovery and recycling system as described in claim 1, characterized in that, The condenser body is also provided with a first condenser valve, a second condenser valve and a condenser safety valve. One end of the first condenser valve is the circulating cooling water supply end, and the second condenser valve is connected to the plate heat exchanger body.

3. The butane recovery and recycling system as described in claim 2, characterized in that, One end of the first heat exchanger valve is a butane outlet, and one end of the second heat exchanger valve and the second evaporator valve is a drain outlet.

4. The butane recovery and recycling system as described in claim 3, characterized in that, One end of the valve in the first plate heat exchanger is the outlet end for cooling ethylene glycol, and one end of the valve in the second plate heat exchanger is the inlet end for ethylene glycol.

5. The butane recovery and recycling system as described in claim 4, characterized in that, One end of the first evaporator valve is the return end of the circulating cooling water, and an evaporator temperature sensor is provided between the third evaporator valve and the evaporator body.

6. The butane recovery and recycling system as described in claim 5, characterized in that, Flanges are provided at one end of the first evaporator valve, one end of the first plate heat exchanger valve, one end of the second plate heat exchanger valve, one end of the butane inlet valve, one end of the first condenser valve, the first heat exchanger valve, and the drain end.

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