Spiral ethanol condensing and recycling device for vacuum pump venting pipeline

Abstract

A kind of spiral ethanol condensation recovery device for vacuum pump vent pipeline, including: chilled water device, condenser, first vent pipeline, second vent pipeline, ethanol recovery pipeline, elbow, diaphragm pump, ethanol to be recycled tank and centrifugal pump, chilled water device is connected with condenser, the upper end of condenser is connected with transfer tank by first vent pipeline, the lower end of condenser is connected with second vent pipeline and elbow, elbow is connected with diaphragm pump by ethanol recovery pipeline, diaphragm pump is connected with ethanol to be recycled tank, ethanol to be recycled tank is connected with centrifugal pump.The utility model discloses compared with prior art, improve condenser, improve condensation recovery;By increasing elbow, improve gas-liquid separation and recovery.

Description

Technical Field

[0001] This utility model relates to the field of recycling equipment, specifically to a spiral ethanol condensation and recovery device for a vacuum pump venting pipeline. Background Technology

[0002] In vacuum pump venting pipeline systems, traditional processes still retain a significant amount of ethanol carried by residual heat at the end of the venting pipeline. Direct discharge of this ethanol not only wastes resources and increases production costs but also burdens the plant's exhaust gas treatment. Existing technologies typically employ only simple single-stage condensation, resulting in low condensation efficiency and an inability to effectively recover ethanol vapor from the pipeline. Furthermore, the lack of a dedicated integrated system design for ethanol recovery leads to inconsistencies between the recovery process and the production process, hindering efficient ethanol recovery and reuse. In addition, existing recovery devices often fail to address the interference between venting and recovery channels, lacking reasonable pipeline design and fluid control schemes, thus affecting the stability and recovery efficiency of the entire system. Therefore, there is an urgent need for a condensation recovery device that can improve ethanol recovery efficiency, reduce production costs, and lessen environmental impact.

[0003] To address the aforementioned issues, we have made a series of improvements. Utility Model Content

[0004] The purpose of this invention is to provide a spiral ethanol condensation and recovery device for vacuum pump venting pipes, so as to overcome the above-mentioned shortcomings and deficiencies of the prior art.

[0005] A spiral ethanol condensation and recovery device for a vacuum pump venting pipeline includes: a chilled water device, a condenser, a first venting pipeline, a second venting pipeline, an ethanol recovery pipeline, a bend, a diaphragm pump, an ethanol recovery tank, and a centrifugal pump. The chilled water device is connected to the condenser. The upper end of the condenser is connected to a transfer tank via the first venting pipeline. The lower end of the condenser is connected to the second venting pipeline and the bend. The bend is connected to the diaphragm pump via the ethanol recovery pipeline. The diaphragm pump is connected to the ethanol recovery tank, and the ethanol recovery tank is connected to the centrifugal pump.

[0006] The condenser includes: condenser tubes, the upper and lower ends of which are straight tubes, the middle section of which is a spiral winding structure, and the condenser tubes are arranged in a coaxial multi-spiral tube array.

[0007] Furthermore, the bent pipe is provided with a bending structure.

[0008] The beneficial effects of this utility model are:

[0009] Compared with traditional technology, this invention improves the condenser and enhances condensation recovery; by adding a bend in the tube, it improves gas-liquid separation and recovery. Attached image description:

[0010] Figure 1 This is a schematic diagram of the structure of this utility model.

[0011] Figure label:

[0012] The chilled water unit 100, condenser 200, condenser tube 210, first vent pipe 300, second vent pipe 400 and ethanol recovery pipe 500.

[0013] 600 bends, 610 bending structures, 700 diaphragm pumps, and 800 ethanol recovery tanks.

[0014] Centrifugal pump 900 and transfer tank 1. Detailed Implementation

[0015] The present invention will be further described below with reference to specific embodiments. It should be understood that the following embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0016] Example 1

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] like Figure 1 As shown, a spiral ethanol condensation and recovery device for a vacuum pump venting pipeline includes: a chilled water device 100, a condenser 200, a first venting pipeline 300, a second venting pipeline 400, an ethanol recovery pipeline 500, a bend 600, a diaphragm pump 700, an ethanol recovery tank 800, and a centrifugal pump 900. The chilled water device 100 is connected to the condenser 200. The upper end of the condenser 200 is connected to a transfer tank 1 through the first venting pipeline 300. The lower end of the condenser 200 is connected to the second venting pipeline 400 and the bend 600. The bend 600 is connected to the diaphragm pump 700 through the ethanol recovery pipeline 500. The diaphragm pump 700 is connected to the ethanol recovery tank 800, and the ethanol recovery tank 800 is connected to the centrifugal pump 900.

[0019] The condenser 200 includes: condenser tubes 210, the upper and lower ends of which are straight tubes, the middle section of which is a spiral winding structure, and the condenser tubes 210 are arranged in a coaxial multi-spiral array.

[0020] The bend 600 is provided with a bending structure 610.

[0021] The working principle of this invention is as follows: Ethanol-containing exhaust gas generated during vacuum pump operation first undergoes initial condensation by the unit, then enters the system through the first vent pipe 300. The exhaust gas then enters a specially designed condenser 200 at the second vent pipe 400, where it undergoes secondary condensation under the action of the chilled water device 100. The condensed gas is discharged through the main vent pipe, while the recovered liquid ethanol flows into the unit's recovery tank through the ethanol recovery pipe 500 and a specially treated bend 600. This design ensures that the venting and recovery channels do not interfere with each other. Subsequently, the recovered ethanol is transported by a diaphragm pump 700 to an ethanol recovery tank 800 for temporary storage. Finally, the ethanol in the recovery tank is transported by a centrifugal pump 900 to a recovery tower for processing. The processed ethanol can be directly used in production, achieving resource recycling while reducing the pressure on exhaust gas treatment and achieving energy conservation and emission reduction.

[0022] The innovation of this invention lies in the condenser tubes 210 within the condenser 200. The upper and lower ends of the condenser tubes 210 are straight tubes for stable connection with other structures. The middle section of the condenser tubes 210 has a spiral winding structure, and the condenser tubes 210 are arranged in a coaxial multi-spiral array, forming a spring-like spiral structure. The design aims to extend the residence time of the exhaust gas within the condenser through the structure of the condenser tubes 210, while simultaneously increasing the heat exchange area and significantly improving condensation efficiency. The parallel connection of multiple condenser tubes reduces the flow resistance of a single tube, increasing the total flow rate. The spiral structure ensures uniform fluid distribution within the cylindrical space, creating a convection effect and enhancing heat exchange efficiency, ultimately significantly increasing the amount of ethanol recovered.

[0023] This invention separates the first vent pipe 300 and the second vent pipe 400 from the ethanol recovery pipe 500. This avoids the low recovery efficiency caused by gas-liquid mixing in traditional equipment, ensuring that condensate and exhaust gas can be efficiently transported through different channels.

[0024] This invention adds a bend 600 structure, characterized by a bend 610 on the transverse connecting structure. The principle is as follows: the mixture after secondary condensation enters the bend 600, where the bend 610 forms a liquid accumulation zone. Liquid ethanol accumulates under gravity and flows to the ethanol recovery pipe 500, while the gaseous components remain in the second vent pipe 400 in the upper space of the pipe, thus ensuring that the two flows do not interfere with each other.

[0025] This invention adds a dedicated secondary condensation stage to the primary condensation process. Through the cooperation of the chilled water device 100 and the condenser 200, the residual ethanol after the primary condensation is further recovered, which greatly improves the overall recovery rate.

[0026] This invention also realizes a complete closed-loop design from tail gas capture to ethanol recovery and reuse. Through the coordinated operation of diaphragm pump 700, ethanol recovery tank 800 and centrifugal pump 900, efficient recovery and reuse of ethanol is achieved.

[0027] The recovered ethanol is then pumped back into the recovery tower via a centrifugal pump (900), allowing it to be directly reused in production. Calculations show that, after deducting the steam costs and ethanol losses during recovery in the tower, significant costs are saved annually. This recovery unit not only reduces ethanol waste and saves costs but also reduces the pressure on exhaust gas treatment, achieving true energy conservation and emission reduction.

[0028] Compared with traditional technology, this invention improves the condenser and enhances condensation recovery; by adding a bend in the tube, it improves gas-liquid separation and recovery.

[0029] The specific embodiments of this utility model have been described above, but this utility model is not limited thereto. Various changes can be made to this utility model as long as they do not depart from its spirit.

Claims

1. A spiral ethanol condensation and recovery device for a vacuum pump venting pipeline, characterized in that, include: The system comprises a chilled water unit (100), a condenser (200), a first vent pipe (300), a second vent pipe (400), an ethanol recovery pipe (500), a bend (600), a diaphragm pump (700), an ethanol recovery tank (800), and a centrifugal pump (900). The chilled water unit (100) is connected to the condenser (200). The upper end of the condenser (200) is connected to the transfer tank (1) via the first vent pipe (300). The lower end of the condenser (200) is connected to the second vent pipe (400) and the bend (600). The bend (600) is connected to the diaphragm pump (700) via the ethanol recovery pipe (500). The diaphragm pump (700) is connected to the ethanol recovery tank (800). The ethanol recovery tank (800) is connected to the centrifugal pump (900). The condenser (200) includes: a condenser tube (210), the upper and lower ends of the condenser tube (210) are straight tubes, the middle section of the condenser tube (210) is a spiral winding structure, and the condenser tubes (210) are arranged in a coaxial multi-spiral tube array.

2. The spiral ethanol condensation and recovery device for a vacuum pump venting pipeline according to claim 1, characterized in that: The bend (600) is provided with a bending structure (610).

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