Vacuum pipeline for improving recovery rate of ethanol

Abstract

The utility model discloses a vacuum pipeline for improving the recovery rate of ethanol, and relates to the technical field of recovery. The device comprises a plate heat exchanger, one side of the plate heat exchanger is fixedly connected with an outlet pipe, the outlet pipe is communicated with an ethanol recovery tank, a cooling mechanism is arranged in the ethanol recovery tank, the cooling mechanism comprises a spiral cooling pipe, the top of the cooling pipe is fixedly connected with a guide plate, and the guide plate is fixedly connected with the plate heat exchanger. The plate heat exchanger, the outlet pipe, the ethanol recovery tank and the cooling mechanism are arranged, the cooling pipe is connected with external cooling equipment, cold energy can be continuously absorbed from the outside and transmitted to ethanol in the ethanol recovery tank, the falling height of the ethanol is reduced by the guide plate, splashing water is prevented from being generated when the ethanol falls into the recovery tank, and the ethanol recovery efficiency is improved. Therefore, volatilization of ethanol is avoided; meanwhile, through the spiral shape, the cooling area can be increased, the cooling effect is improved, the temperature of ethanol is reduced, and volatilization loss is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of recovery, specifically is a kind of vacuum pipeline of improving ethanol recovery rate. BACKGROUND

[0002] Ethanol volatile gas recovery is an important environmental protection and energy saving process, there are various methods for recovery, in the treatment of ethanol waste gas, first, the ethanol waste gas is treated by adsorption tower adsorption, when the adsorbent reaches a certain saturation, switch to standby adsorption tower for desorption regeneration, the high concentration ethanol gas desorbed into condensing device for condensation recovery.

[0003] After searching, the patent with Chinese patent number CN210645726 U discloses a vacuum pipeline ethanol recovery system, which is composed of a vacuum pipeline, a vacuum pipe branch one, a vacuum pipe branch two, a cooling pipeline, a plate heat exchanger, an ethanol recovery tank, a discharge valve, a vent valve, a communication valve, a vacuum inlet valve and a vacuum return valve. The plate heat exchanger is installed on the vacuum pipeline and communicates with the cooling pipeline. The communication valve is installed on the vacuum pipeline, and the vacuum pipe branch one and the vacuum pipe branch two are connected to the communication valve. The vacuum inlet valve is installed on the vacuum pipe branch one, and the vacuum return valve is installed on the vacuum pipe branch two. The vacuum pipe branch one and the vacuum pipe branch two are connected to the ethanol recovery tank. The tank body of the ethanol recovery tank is connected to a discharge pipe, and the discharge valve is installed on the discharge pipe. The tank of the ethanol recovery tank is connected to a vent pipe, and the vent valve is installed on the vent pipe.

[0004] The existing ethanol enters the inside of the recovery tank, and due to the lack of cooling device, a part of ethanol will still volatilize into the vacuum pipe during the waiting recovery process, which will affect the work of the vacuum pump. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model aims to provide a vacuum pipeline for improving ethanol recovery rate to solve the technical problem that a part of ethanol will still volatilize into the vacuum pipe during the waiting recovery process due to the lack of cooling device after entering the inside of the recovery tank.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a vacuum pipeline for improving ethanol recovery rate, which comprises a plate heat exchanger, one side of the plate heat exchanger is fixedly connected with an outlet pipe, the outlet pipe is connected with an ethanol recovery tank, the inside of the ethanol recovery tank is provided with a cooling mechanism, the cooling mechanism comprises a spiral cooling pipe, and the top of the cooling pipe is fixedly connected with a guide plate.

[0007] By adopting the technical scheme, the plate heat exchanger can effectively exchange heat with ethanol, reduce the temperature of the ethanol, and facilitate the subsequent recovery process.

[0008] Further, the guide plate is provided with a groove.

[0009] By adopting the technical scheme, the groove in the guide plate has a good flow guiding effect.

[0010] Further, the two ends of the cooling pipe penetrate the tank body of the ethanol recovery tank and are connected with external cooling equipment.

[0011] By adopting the technical scheme, the two ends of the cooling pipe penetrate the tank body of the ethanol recovery tank and are connected with external cooling equipment, so that the cooling pipe can continuously absorb cold from the outside and transfer it to the ethanol in the ethanol recovery tank.

[0012] Further, the first branch pipe and the second branch pipe are arranged between the outlet pipe and the ethanol recovery tank.

[0013] By adopting the technical scheme, the first branch pipe and the second branch pipe arranged between the outlet pipe and the ethanol recovery tank provide a path for the ethanol to enter and exit the recovery tank, forming a complete circulation loop.

[0014] Further, the first branch pipe is arranged opposite to one side of the guide plate.

[0015] By adopting the technical scheme, the first branch pipe is arranged opposite to one side of the guide plate, so that the ethanol can drop onto the guide plate at a lower drop distance, thereby more effectively utilizing the flow guiding effect of the guide plate.

[0016] Further, the bottom of the guide plate is fixedly connected with an elongated plate, and the elongated plate is provided with two groups.

[0017] By adopting the technical scheme, the elongated plate fixedly connected to the bottom of the guide plate further expands the contact area of the ethanol with the cooling pipe and the tank wall, so that more ethanol can be simultaneously subjected to cooling effect, improving the cooling efficiency.

[0018] In summary, the utility model mainly has the following beneficial effects:

[0019] 1. The utility model discloses a plate heat exchanger, outlet pipe, ethanol recovery tank and cooling mechanism are set up, and cooling pipe is connected with external cooling equipment, can continuously absorb the cold quantity from the outside, and passes to the ethanol in the ethanol recovery tank, and the guide plate reduces the height of ethanol falling, prevents the splash of ethanol when falling into the recovery tank, thereby avoiding the volatilization of ethanol, and through the spiral shape, can improve the area of cooling, improve the cooling effect, not only reduce the temperature of ethanol, but also reduce the volatilization loss, further improve the recovery rate.

[0020] 2. The utility model discloses a symmetric elongated plate is set up, and the contact area of ethanol and cooling mechanism and ethanol recovery tank jar wall is increased, more ethanol can be cooled simultaneously, thereby improving the cooling efficiency of whole, through increasing the contact area, ethanol can reach low temperature faster and more evenly, reduces the volatilization loss, further improves the recovery rate of ethanol. DRAWINGS

[0021] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0022] Figure 2 It is the cutaway structure schematic diagram of ethanol recovery tank of the utility model;

[0023] Figure 3 It is the elevation structure schematic diagram of cooling pipe of the utility model;

[0024] Figure 4 It is the three-dimensional structure schematic diagram of elongated plate of the utility model.

[0025] In the drawing: 1, plate heat exchanger;2, outlet pipe;3, ethanol recovery tank;4, cooling mechanism;401, cooling pipe;402, guide plate;403, recess;5, first branch pipe;6, second branch pipe;7, elongated plate. DETAILED DESCRIPTION

[0026] The technical scheme in the embodiment of the utility model will be described clearly and completely in the embodiment of the utility model in combination with the drawings. The embodiment described below is exemplary, and is used for explaining the utility model only, and can not be understood as the limitation of the utility model.

[0027] Embodiment one:

[0028] A kind of vacuum pipeline for improving ethanol recovery rate, such as Figures 1-4As shown, including plate heat exchanger 1, one side of plate heat exchanger 1 is fixedly connected with outlet pipe 2, outlet pipe 2 is communicated with ethanol recovery tank 3, cooling mechanism 4 is arranged in ethanol recovery tank 3, cooling mechanism 4 comprises spiral cooling pipe 401, the top of cooling pipe 401 is fixedly connected with guide plate 402, so that the ethanol after heat exchange can smoothly flow out and enter ethanol recovery tank 3, the cooling mechanism 4 arranged in ethanol recovery tank 3 further ensures the low temperature state of ethanol in the recycling process, reduces the volatilization loss, and improves the recovery rate.

[0029] Referring to Figure 2 、 Figure 4 , the recess 403 is used for flow guiding, and the flow guiding is also helpful for cooling the ethanol flowing through the cooling pipe 401, and the cooling effect is improved.

[0030] Referring to Figure 2 、 Figure 3 , the both ends of the cooling pipe 401 penetrate the tank body of the ethanol recovery tank 3 and are connected with external cooling equipment, since the cooling pipe is spiral, the contact area with the ethanol is increased, the heat exchange efficiency is improved, and therefore the temperature of the ethanol is more effectively reduced, and the volatilization is reduced.

[0031] Referring to Figure 1 、 Figure 2 , the first branch pipe 5 and the second branch pipe 6 are arranged between the outlet pipe 2 and the ethanol recovery tank 3, by controlling the opening degree of the valves on the first branch pipe 5 and the second branch pipe 6, the ethanol flow into and out of the ethanol recovery tank 3 can be controlled, and then the ethanol flow and distribution can be flexibly adjusted according to actual conditions, so as to adapt to different recovery requirements, and the stability and reliability of the whole system are improved.

[0032] Referring to Figure 2 , the first branch pipe 5 and the side of the guide plate 402 are oppositely arranged, so that when the ethanol flows into the recovery tank, it can accurately flow into the recess 403 on the guide plate 402, and the kinetic energy of the ethanol when flowing into the recovery tank is also reduced, so that the ethanol more stably enters the cooling area, and the cooling effect is improved.

[0033] The implementation principle of the utility model is as follows: firstly, the ethanol flows out from the outlet pipe 2 of the plate heat exchanger 1, the valves of the first branch pipe 5 and the second branch pipe 6 are opened, so that a complete passage can be formed, and then the cooled ethanol enters the inside of the ethanol recovery tank 3 through the first branch pipe 5, and the recycling process starts;

[0034] After the ethanol drops, it will first contact the spiral guide plate 402, and then the ethanol will flow along the guide plate 402 to the bottom of the ethanol recovery tank 3, while exchanging heat with the cooling pipe 401, both ends of the cooling pipe 401 penetrate the tank body of the ethanol recovery tank 3 and are connected with external cooling equipment, so that the ethanol inside the recovery tank can be continuously cooled, and the cooling effect not only reduces the temperature of the ethanol on the guide plate 402, but also reduces the temperature of the ethanol inside the entire tank body, thereby effectively reducing the volatilization of ethanol;

[0035] The cooled and guided ethanol is collected at the bottom of the ethanol recovery tank 3, waiting for further recovery and processing, and since the temperature of the ethanol is effectively controlled throughout the process, the amount of ethanol volatilized into the interior of the vacuum pipe is greatly reduced, thereby reducing the influence on the operation of the vacuum pump;

[0036] When the ethanol inside the tank body is collected, the valve is opened to allow the ethanol to flow out of the second branch pipe 6 and then into the subsequent recovery tank.

[0037] Embodiment two:

[0038] Referring to Figure 4 The bottom of the guide plate 402 is fixedly connected with an elongated plate 7, and the elongated plate 7 is provided with two groups, and the two groups of elongated plates 7 are symmetrically arranged, and the symmetric arrangement of the elongated plate 7 also ensures the uniform distribution of ethanol in the recovery tank, avoiding the occurrence of local overheating or insufficient cooling, and the elongated plate 7 also plays a role in supporting and guiding the flow of ethanol, enhancing the stability and reliability of the entire system.

[0039] The implementation principle of the utility model is: first, the two elongated plates 7 can further expand the contact area of the ethanol and improve the cooling effect.

[0040] Although the embodiments of the utility model have been shown and described, the specific embodiments are only an explanation of the utility model, and are not a limitation of the utility model, and the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner, and those skilled in the art can make modifications, replacements and variations of the embodiments without creative contribution after reading the specification without departing from the principles and purposes of the utility model, but as long as it is within the scope of the claims of the utility model, it is protected by the patent law.

Claims

1. A vacuum line for improving the recovery of ethanol, characterized by: Including plate heat exchanger (1), one side of plate heat exchanger (1) is fixedly connected with outlet pipe (2), outlet pipe (2) is communicated with ethanol recovery tank (3), cooling mechanism (4) is arranged in ethanol recovery tank (3), cooling mechanism (4) includes spiral cooling pipe (401), the top of cooling pipe (401) is fixedly connected with guide plate (402).

2. The vacuum line for improving the recovery of ethanol according to claim 1, characterized in that: Groove (403) is formed in the guide plate (402), and the groove (403) is used for guiding flow.

3. The vacuum line for improving the recovery of ethanol according to claim 1, characterized in that: Both ends of the cooling pipe (401) penetrate the tank body of the ethanol recovery tank (3) and are connected with external cooling equipment.

4. The vacuum line for improving the recovery of ethanol according to claim 1, characterized by: The first branch pipe (5) and the second branch pipe (6) are arranged between the outlet pipe (2) and the ethanol recovery tank (3).

5. The vacuum line for improved ethanol recovery of claim 4, wherein: The first branch pipe (5) and one side of the guide plate (402) are oppositely arranged.

6. The vacuum line for improved ethanol recovery of claim 1, wherein: The bottom of the guide plate (402) is fixedly connected with the elongated plate (7), the elongated plate (7) is provided with two groups, and the two groups of the elongated plate (7) are symmetrically arranged.

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