Ethanol distillation waste liquid heat exchange device

Abstract

The utility model relates to the technical field of ethanol distillation, in particular to an ethanol distillation waste liquid heat exchange device which comprises a bottom plate, a distillation retort, a heat exchange box, a self-flowing pipe, a first water outlet pipe, a water inlet pipe and a second water outlet pipe, the distillation retort is fixed on the bottom plate, the heat exchange box is fixed on the bottom plate through a supporting frame, and the distillation retort is connected with the heat exchange box through the self-flowing pipe. The first water outlet pipe connected to the heat exchange box is used for guiding out ethanol distillation waste liquid, and a coil pipe is arranged between the water inlet pipe and the second water outlet pipe and located in the heat exchange box. The waste distillation liquid is guided into the heat exchange box through the self-flowing pipe, the temperature of recycled condensate water is efficiently increased, meanwhile, the temperature of the waste liquid is reduced, the heat exchange effect is achieved, impact on a sewage treatment system is reduced, and normal operation of sewage treatment is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of ethanol distillation, in particular to a heat exchange device for ethanol distillation waste liquid. Background Art

[0002] Ethanol distillation waste liquid refers to the wastewater generated in the ethanol distillation process. For every 1 L of ethanol produced, 8 - 15 L of distillation wastewater is generated. This kind of waste liquid usually has the characteristics of high temperature, deep color, and acidity, with high organic matter and solid content, causing relatively large environmental pollution.

[0003] In existing medium - and large - scale ethanol distillation equipment, the waste liquid generated after distillation is directly discharged into the sewage tank. The high - temperature waste liquid discharged into the sewage tank is likely to damage the growth of activated sludge, affecting the sewage treatment effect. Summary of the Utility Model

[0004] In order to overcome the defect that the existing ethanol distillation waste liquid is directly discharged into the sewage tank, and the high - temperature waste liquid reduces the sewage treatment effect, the utility model provides a heat exchange device for ethanol distillation waste liquid.

[0005] A heat exchange device for ethanol distillation waste liquid includes a bottom plate, a distillation tank, a heat exchange tank, a gravity flow pipe, a first water outlet pipe, a water inlet pipe, and a second water outlet pipe. The distillation tank is fixed on the bottom plate, the heat exchange tank is fixed on the bottom plate through a support frame, the distillation tank is connected to the heat exchange tank through the gravity flow pipe, the first water outlet pipe connected to the heat exchange tank is used to discharge the ethanol distillation waste liquid, and a coil is arranged between the water inlet pipe and the second water outlet pipe, and the coil is located inside the heat exchange tank.

[0006] Optionally, it further includes a scraper, a pressing rod, and a return spring. The pressing rod is slidably inserted through the top of the heat exchange tank, a return spring is connected between the pressing rod and the heat exchange tank, the bottom end of the pressing rod is fixedly connected with the scraper, and the scraper is slidably attached to the inner wall of the heat exchange tank.

[0007] Optionally, it further includes an anti - slip pad, and the anti - slip pad is sleeved on the handle of the pressing rod.

[0008] Optionally, it further includes a heat - insulating layer, and the heat - insulating layer is arranged outside the heat exchange tank.

[0009] Optionally, an observation window is opened on the side of the heat exchange tank.

[0010] Optionally, it further includes a protective sleeve, and the protective sleeve is arranged between the pressing rod and the heat exchange tank, specifically located outside the return spring.

[0011] The beneficial effects of the utility model are as follows: 1. The distillation waste liquid introduced into the heat exchange tank through the gravity flow pipe efficiently heats up the recovered condensed water, and at the same time reduces the temperature of the waste liquid, realizing the heat exchange effect, reducing the impact on the sewage treatment system, and ensuring the normal operation of sewage treatment.

[0012] 2. A scraper is provided to clean the inner wall of the heat exchange box. Brief Description of the Drawings

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the present utility model.

[0014] Figure 2 It is a three-dimensional structural schematic diagram of the gravity flow pipe and the coil pipe of the present utility model.

[0015] Figure 3 It is a three-dimensional structural schematic diagram of the extrusion rod, the return spring and the scraper of the present utility model.

[0016] Description of the reference numerals: 1: bottom plate, 2: distillation tank, 3: support frame, 4: heat exchange box, 5: gravity flow pipe, 6: water inlet pipe, 7: coil pipe, 8: first water outlet pipe, 9: second water outlet pipe, 10: scraper, 11: extrusion rod, 12: return spring, 13: anti-slip pad, 14: heat insulation layer, 15: observation window, 16: protective sleeve. Detailed Embodiment

[0017] The embodiments of the present utility model will be described below with reference to the drawings.

[0018] Embodiment: An ethanol distillation waste liquid heat exchange device, as Figure 1 and Figure 2 shown, includes a bottom plate 1, a distillation tank 2, a heat exchange box 4, a gravity flow pipe 5, a first water outlet pipe 8, a water inlet pipe 6 and a second water outlet pipe 9. The distillation tank 2 is fixed on the bottom plate 1, the heat exchange box 4 is fixed on the bottom plate 1 through a support frame 3. An observation window 15 is provided on the side of the heat exchange box 4, and the internal situation of the heat exchange box 4 can be observed through the observation window 15. The distillation tank 2 is connected to the heat exchange box 4 through the gravity flow pipe 5. Ethanol distillation is carried out in the distillation tank 2, and the waste liquid after ethanol distillation enters the heat exchange box 4 through the gravity flow pipe 5. The first water outlet pipe 8 connected to the bottom of the heat exchange box 4 is used to discharge the ethanol distillation waste liquid. A pipe valve is provided on the first water outlet pipe 8, and the pipe valve can adjust the discharge amount of the ethanol distillation waste liquid. A coil pipe 7 is arranged between the water inlet pipe 6 and the second water outlet pipe 9, and the coil pipe 7 is located in the heat exchange box 4.

[0019] As Figure 3 shown, it further includes a scraper 10, an extrusion rod 11 and a return spring 12. The extrusion rod 11 is slidably inserted through the top of the heat exchange box 4. A return spring 12 is connected between the extrusion rod 11 and the heat exchange box 4. The bottom end of the extrusion rod 11 is fixedly connected with a scraper 10, and the scraper 10 is slidably attached to the inner wall of the heat exchange box 4.

[0020] As Figure 1 shown, it further includes an anti-slip pad 13. The anti-slip pad 13 is sleeved on the handle of the extrusion rod 11 to facilitate the staff to push the extrusion rod 11.

[0021] As Figure 1As shown in the figure, it further includes a heat insulation layer 14 which is arranged outside the heat exchange box 4, and the heat insulation layer 14 can effectively prevent the heat in the heat exchange box 4 from leaking out.

[0022] As Figure 1 shown in the figure, it further includes a protective sleeve 16 which can be telescopic. The protective sleeve 16 is arranged between the extrusion rod 11 and the heat exchange box 4, specifically located outside the return spring 12. The protective sleeve 16 can protect the extrusion rod 11 and the return spring 12, not only preventing the return spring 12 from being physically impacted, but also reducing the intrusion of dust.

[0023] Working principle: Ethanol is distilled in the distillation tank 2. After ethanol distillation, the waste liquid enters the heat exchange box 4 through the gravity flow pipe 5. The water inlet pipe 6 is externally connected to condensed water. The condensed water is introduced through the water inlet pipe 6 and exchanges heat through the coil pipe 7. Finally, the condensed water is led out to the sewage treatment tank through the second water outlet pipe 9. The coil pipe 7 is provided to increase the contact area and improve the heat exchange efficiency. The first water outlet pipe 8 is provided with a pipe valve. By controlling the pipe valve, the export efficiency of the ethanol distillation waste liquid can be adjusted, and thus the heat exchange time between the high-temperature distillation waste liquid and the condensed water can be adjusted, efficiently utilizing the waste heat energy of the waste liquid. The ethanol distillation waste liquid continuously impacts the heat exchange box 4, which is likely to generate waste protein gel on the inner wall of the heat exchange box 4. It presses down the extrusion rod 11 and scrapes the inner wall of the heat exchange box 4 through the scraper 10, which can scrape off the attached waste protein gel and prevent blockage.

[0024] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An ethanol distillation waste liquid heat exchange device, characterized in that: The invention comprises a base plate (1), a distillation tank (2), a heat exchange box (4), a gravity pipe (5), a first water outlet pipe (8), a water inlet pipe (6) and a second water outlet pipe (9); the distillation tank (2) is fixed on the base plate (1); the heat exchange box (4) is fixed on the base plate (1) via a support frame (3); the distillation tank (2) is connected to the heat exchange box (4) via the gravity pipe (5); the first water outlet pipe (8) connected to the heat exchange box (4) is used to discharge ethanol distillation waste liquid; a coil (7) is arranged between the water inlet pipe (6) and the second water outlet pipe (9); the coil (7) is located in the heat exchange box (4); and the water inlet pipe (6) is externally connected to condensed water.

2. The ethanol distillation waste liquid heat exchange device according to claim 1, characterized in that: The invention also comprises a scraper (10), an extrusion rod (11) and a return spring (12); the extrusion rod (11) is slidably connected to the top of the heat exchange box (4); a return spring (12) is connected between the extrusion rod (11) and the heat exchange box (4); the scraper (10) is fixedly connected to the bottom end of the extrusion rod (11); and the scraper (10) cleans the inner wall of the heat exchange box (4).

3. The ethanol distillation waste liquid heat exchange device according to claim 2, characterized in that: It also includes an anti-skid pad (13), which is sleeved on the handle of the extrusion rod (11).

4. The ethanol distillation waste liquid heat exchange device according to claim 3, characterized in that: It also includes a heat-insulating layer (14), which is arranged outside the heat exchange box (4).

5. The ethanol distillation waste liquid heat exchange device according to claim 4, characterized in that: An observation window (15) is provided on the side of the heat exchange box (4).

6. The ethanol distillation waste liquid heat exchange device according to claim 5, characterized in that: It also includes a protective sleeve (16), which is arranged between the extrusion rod (11) and the heat exchange box (4).

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