CN220056423U - Continuous reduced pressure distillation plant of waste water - Google Patents
Continuous reduced pressure distillation plant of waste water Download PDFInfo
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- CN220056423U CN220056423U CN202321612522.8U CN202321612522U CN220056423U CN 220056423 U CN220056423 U CN 220056423U CN 202321612522 U CN202321612522 U CN 202321612522U CN 220056423 U CN220056423 U CN 220056423U
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- 239000002351 wastewater Substances 0.000 title claims abstract description 59
- 238000004821 distillation Methods 0.000 title abstract description 6
- 239000002994 raw material Substances 0.000 claims abstract description 70
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 60
- 238000010438 heat treatment Methods 0.000 claims abstract description 24
- 238000005292 vacuum distillation Methods 0.000 claims abstract description 9
- 239000010426 asphalt Substances 0.000 claims description 24
- 239000007789 gas Substances 0.000 claims description 9
- 239000002918 waste heat Substances 0.000 claims description 4
- 238000004065 wastewater treatment Methods 0.000 abstract description 2
- 239000011280 coal tar Substances 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000011084 recovery Methods 0.000 description 3
- 239000006229 carbon black Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The utility model relates to the technical field of wastewater treatment, in particular to a continuous reduced pressure distillation device for wastewater. The utility model provides a novel device for treating wastewater, namely a wastewater continuous vacuum distillation device, which comprises a rectifying tower body, a tower top condenser, a tower top condensate water tank, a raw material preheater and a tower bottom heater, wherein a raw material preheating outlet of the raw material preheater is communicated with a feed inlet of the rectifying tower body, a tower top steam outlet of the rectifying tower body is communicated with a condensate steam inlet of the tower top condenser, a condensate gas outlet of the tower top condenser is communicated with a vacuum pump, a condensate water outlet of the tower top condenser is communicated with a condensate water inlet of the tower top condensate water tank, a tower bottom circulation outlet of the rectifying tower body is communicated with a heating circulation inlet of the tower bottom heater, a heating circulation outlet of the tower bottom heater is communicated with a tower bottom circulation inlet of the rectifying tower body, and a tower bottom oil drain port of the rectifying tower body is communicated with a ground tank. The device for treating wastewater saves energy and can continuously operate.
Description
Technical Field
The utility model relates to the technical field of wastewater treatment, in particular to a continuous reduced pressure distillation device for wastewater.
Background
Coal tar is one of important products of coal chemical enterprises, and the processing of the coal tar is quite complex. After the coal tar is subjected to standing separation, coal tar standing separation water, which is called waste water for short herein, is generated. The traditional method for treating the wastewater usually adopts a light oil extraction method, but the method adopts the light oil as an extractant, so that the safety risk exists, the light oil has heavy smell, and the method is not friendly to the surrounding environment during use. In addition, biological treatment methods are also commonly adopted in the prior art, but the biological degradation method has the disadvantages of large dilution water consumption, large scale of treatment facilities, long residence time, high investment cost and incapability of recycling.
Disclosure of Invention
The utility model aims to solve the problems that the prior light oil extraction method is inconvenient to the surrounding environment due to heavy peculiar smell of the light oil and the biological treatment method is large in scale of treatment facilities, long in residence time, high in investment cost and incapable of recycling when the waste water is treated, and provides a novel device for treating the waste water, namely a waste water continuous reduced pressure distillation device.
The utility model is realized by adopting the following technical scheme:
a continuous vacuum distillation device for wastewater comprises a rectifying tower body, a tower top condenser, a tower top condensate water tank, a raw material preheater and a tower bottom heater which utilizes light asphalt waste heat to exchange heat with tower bottom wastewater of the rectifying tower body, wherein the rectifying tower body is provided with a feed inlet, a tower top steam outlet, a tower bottom oil drain port, a tower bottom circulating inlet and a tower bottom circulating outlet, the tower top condenser is provided with a condensate steam inlet, a circulating water outlet, a condensate water outlet and a condensate gas outlet, the tower top condensate water tank is provided with a condensate water inlet and a condensate water outlet, the raw material preheater is provided with a steam inlet, a steam outlet, a raw material preheating inlet and a raw material preheating outlet, the tower bottom heater is provided with a heating circulating inlet, a heating circulating outlet, a light asphalt inlet and a light asphalt outlet, the raw material preheating outlet of the raw material preheater is communicated with the feed inlet of the rectifying tower body, the tower top steam outlet of the rectifying tower top condenser is communicated with the condensate steam inlet of the tower top condenser, the condensate water outlet of the tower top condenser is communicated with a vacuum pump, the condensate water outlet of the tower bottom condenser is communicated with the condensate water inlet of the condensing water tank, and the circulating outlet of the tower bottom heater is communicated with the heating circulating inlet of the rectifying tower bottom heater.
Working principle: the wastewater to be treated is sent to a raw material preheating inlet of a raw material preheater, enters a rectifying tower body through a feeding hole of the rectifying tower body after heat exchange is carried out between the raw material preheater and steam, the part of the wastewater which is converted into steam after preheating of the raw material preheater is discharged to a tower top condenser from a tower top steam outlet of the rectifying tower body, the temperature of the wastewater is reduced by circulating water of the tower top condenser, condensed liquid phase condensed water enters a tower top condensate water tank for recovery and is used for a quenching device of a furnace of a carbon black plant, noncondensable gas in the tower top condenser is pumped to a tail gas system through a vacuum pump for treatment, and meanwhile, the rectifying tower body generates negative pressure through the vacuum pump; the waste water after entering the rectifying tower body enters the tower bottom heater through the tower bottom circulating outlet and the heating circulating inlet of the tower bottom heater (the waste water enters the heating circulating inlet of the tower bottom heater and can be obtained by the conventional means by the technical personnel in the field, if the waste water also flows from top to bottom, the waste water can flow automatically and can be realized through a variable frequency pump if the waste water flows from bottom to top, in addition, the circulation of the waste water at other places can be realized by adopting a self-flowing or variable frequency pump according to the flow direction of the waste water), the light asphalt inlet of the tower bottom heater is communicated with a light asphalt production system, the light asphalt outlet of the tower bottom heater is communicated with a lower system of the light asphalt production system, the light asphalt produced by the light asphalt production system just exchanges heat with the waste water through the tower bottom heater, the waste water after heat exchange returns into the rectifying tower body, a heat source is provided for the rectifying tower body, so that the waste water in the rectifying tower body can be fully evaporated into steam and then discharged from the steam outlet of the rectifying tower body, and simultaneously, the coal tar can be smoothly discharged from the tower top of the rectifying tower body through the steam outlet of the raw material preheater into the steam, the coal tar can be well discharged from the tower top of the rectifying tower body, and the coal tar can be recycled to the residual coal tar can be recycled.
Further, the device also comprises a raw material water tank, wherein a raw material inlet and a raw material outlet are arranged on the raw material water tank, and the raw material outlet on the raw material water tank is communicated with a raw material preheating inlet on the raw material preheater. The structure is normalized and materialized, namely, the wastewater to be treated is firstly sent to a raw material water tank, then the wastewater is sent to a raw material preheater from the raw material water tank for preheating, and then enters a rectifying tower body.
The beneficial effects of the utility model are as follows: the continuous reduced pressure distillation device for wastewater is adopted to treat wastewater, so that the production efficiency is greatly improved, and the wastewater can be recycled, thereby improving the resource utilization rate; in addition, the light asphalt waste heat is utilized for heat exchange, so that the energy is saved, and the continuous operation can be realized.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model.
In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort.
Fig. 1 is a schematic diagram of the overall structure of the present utility model.
In the figure: 1-rectifying tower body, 11-feed inlet, 12-tower top steam outlet, 13-tower bottom oil drain, 14-tower bottom circulation inlet, 15-tower bottom circulation outlet, 2-tower top condenser, 21-condensing steam inlet, 22-circulating water outlet, 23-circulating water inlet, 24-condensate outlet, 25-condensing gas outlet, 3-tower top condensate tank, 31-condensing water outlet, 32-condensing water inlet, 4-raw material preheater, 41-steam inlet, 42-steam outlet, 43-raw material preheating inlet, 44-raw material preheating outlet, 5-tower bottom heater, 51-heating circulation inlet, 52-heating circulation outlet, 53-light asphalt inlet, 54-light asphalt outlet, 6-vacuum pump, 7-raw material water tank, 71-raw material inlet, 72-raw material outlet, 8-variable frequency pump and 9-ground tank.
Detailed Description
In order that the above objects, features and advantages of the utility model will be more clearly understood, a further description of the utility model will be made. It should be noted that, without conflict, the embodiments of the present utility model and features in the embodiments may be combined with each other.
In the description, it should be noted that the terms "first," "second," and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. It should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms described above will be understood by those of ordinary skill in the art as the case may be.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, but the present utility model may be practiced otherwise than as described herein; it will be apparent that the embodiments in the specification are only some, but not all, embodiments of the utility model.
Specific embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.
As shown in FIG. 1, the continuous vacuum distillation device for wastewater comprises a rectifying tower body 1, a tower top condenser 2, a tower top condensate tank 3, a raw material preheater 4, a tower bottom heater 5 for performing heat exchange with the wastewater at the tower bottom of the rectifying tower body 1 by utilizing light asphalt waste heat, wherein a feed inlet 11, a tower top steam outlet 12, a tower bottom oil drain 13, a tower bottom circulating inlet 14 and a tower bottom circulating outlet 15 are arranged on the rectifying tower body 1, a condensate steam inlet 21, a circulating water inlet 23, a circulating water outlet 22, a condensate water outlet 24 and a condensate gas outlet 25 are arranged on the tower top condenser 2, a condensate water inlet 32 and a condensate water outlet 31 are arranged on the tower top condensate tank 3, a steam inlet 41, a steam outlet 42, a raw material preheating inlet 43 and a raw material preheating outlet 44 are arranged on the tower bottom heater 5, a heating circulating inlet 51, a heating circulating outlet 52, a light asphalt inlet 53 and a light asphalt outlet 54 are arranged on the tower bottom heater 5, the raw material preheating outlet 44 of the raw material preheater 4 is communicated with the feed inlet 11 of the rectifying tower body 1, the steam outlet 12 of the rectifying tower top condenser 2 is communicated with the condensate steam inlet 21 of the tower top condenser 2, the condensate water outlet 25 of the tower top condenser 2 is communicated with the condensate water outlet 6 of the tower bottom 1, the condensate water outlet 6 is communicated with the tower bottom outlet of the vacuum circulating inlet 14 of the tower bottom condenser 1, and the tower bottom outlet 5 is communicated with the heating outlet 3 of the tower bottom circulating outlet 5 is communicated with the tower bottom outlet 1, and the condensate water outlet 52 is heated with the tower bottom outlet 1 is communicated with the circulating outlet 5.
Working principle: the wastewater to be treated is sent to a raw material preheating inlet 43 of a raw material preheater 4, enters the rectifying tower 1 through a feed inlet 11 of the rectifying tower 1 after heat exchange is carried out between the raw material preheater 4 and steam, the wastewater is discharged to a tower top condenser 2 from a tower top steam outlet 12 of the rectifying tower 1 after the preheating of the raw material preheater 4, the circulating water of the tower top condenser 2 is used for cooling the wastewater, the condensed liquid phase condensed water enters a tower top condensate water tank 3 for recovery and is used for a furnace quenching device of a carbon black plant, the noncondensable gas in the tower top condenser 2 is pumped to a tail gas system for treatment through a vacuum pump 6, and meanwhile, the rectifying tower 1 generates negative pressure through the vacuum pump 6; the waste water after entering the rectifying tower 1 enters the bottom heater 5 through the bottom circulation outlet 14 of the rectifying tower and the heating circulation inlet 51 of the bottom heater 5 (how the waste water enters the heating circulation inlet 51 of the bottom heater 5 can be obtained by the conventional means by the skilled man, if the waste water flows from top to bottom, the waste water can flow automatically and directly, if the waste water flows from bottom to top, the waste water can flow automatically or through the variable frequency pump 8, in addition, the circulation of the waste water can be realized by adopting the variable frequency pump 8 according to the flow direction of the waste water, the light asphalt inlet 53 of the bottom heater 5 is communicated with a light asphalt production system, the light asphalt outlet 54 of the bottom heater 5 is communicated with a lower system of the light asphalt production system, and because the light asphalt produced by the light asphalt production system is hot, the waste water just passes through the bottom heater 5 to exchange heat with the waste water, and the waste water returns to the rectifying tower 1 to provide a heat source for the rectifying tower 1, so that the waste water in the rectifying tower 1 can be fully evaporated into steam and then discharged from the top steam outlet 12 of the rectifying tower 1, and the coal tar can be discharged from the top steam outlet 12 through the waste water is well, and the coal tar can be discharged from the rectifying tower 1 to the bottom through the waste water recovery zone 9.
In specific implementation, the device further comprises a raw material water tank 7, wherein a raw material inlet 71 and a raw material outlet 72 are arranged on the raw material water tank 7, and the raw material outlet 72 on the raw material water tank 7 is communicated with the raw material preheating inlet 43 on the raw material preheater 4. The structure is normalized and materialized, namely the wastewater to be treated is firstly sent to the raw material water tank 7, then the wastewater is sent to the raw material preheater 4 from the raw material water tank 7 for preheating, and then enters the rectifying tower body 1.
In the specific implementation, the raw material preheater 4 is a double raw material preheater 4 which is formed by arranging two raw material preheater 4 bodies side by side up and down and communicating with the preheating tube side communicating pipe through the preheating shell side communicating pipe, and the structure is specific, so that the heat exchange effect of the double raw material preheater is improved.
In the concrete implementation, the tower bottom heater 5 is a double tower bottom heater 5 which is formed by arranging two tower bottom heater 5 bodies side by side up and down and communicating with the heating tube side communicating pipe through the heating shell side communicating pipe, and the structure is concrete, so that the heat exchange effect of the double tower bottom heater is improved.
The foregoing is only a specific embodiment of the utility model to enable those skilled in the art to understand or practice the utility model. Although described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the embodiments, and they should be construed as covering the scope of the appended claims.
Claims (5)
1. The utility model provides a continuous vacuum distillation device for wastewater, which is characterized in that the continuous vacuum distillation device comprises a rectifying tower body (1), a tower top condenser (2), a tower top condensate water tank (3), a raw material preheater (4), a tower bottom heater (5) which utilizes light asphalt waste heat to exchange heat with the tower bottom wastewater of the rectifying tower body (1), a feed inlet (11), a tower top steam outlet (12), a tower bottom oil drain port (13), a tower bottom circulating inlet (14) and a tower bottom circulating outlet (15) are arranged on the rectifying tower body (1), a condensing steam inlet (21), a circulating water inlet (23), a circulating water outlet (22), a condensing water outlet (24) and a condensing gas outlet (25) are arranged on the tower top condenser water tank (3), a condensing water inlet (32) and a condensing water outlet (31) are arranged on the tower top condensate water tank (3), a steam inlet (41), a steam outlet (42), a raw material preheating inlet (43) and a raw material preheating outlet (44) are arranged on the tower bottom heater (5), a heating circulating inlet (51), a heating circulating outlet (52), a light asphalt inlet (53) and a light asphalt outlet (54) are arranged on the tower bottom heater (5), the raw material preheating outlet (44) is communicated with the feed inlet (11) of the rectifying tower body (1), the tower top steam outlet (12) of the rectifying tower body (1) is communicated with the condensing steam inlet (21) of the tower top condenser (2), the condensing gas outlet (25) of the tower top condenser (2) is communicated with the vacuum pump (6), the tower top condensing water outlet (24) of the tower top condenser (2) is communicated with the condensing water inlet (32) of the tower top condensing water tank (3), the tower bottom circulating outlet (15) of the rectifying tower body (1) is communicated with the heating circulating inlet (51) of the tower bottom heater (5), the heating circulating outlet (52) of the tower bottom heater (5) is communicated with the tower bottom circulating inlet (14) of the rectifying tower body (1), and the tower bottom oil draining port (13) of the rectifying tower body (1) is communicated with the ground tank (9).
2. The continuous vacuum distillation apparatus for wastewater according to claim 1, further comprising a raw material water tank (7), wherein a raw material inlet (71) and a raw material outlet (72) are provided on the raw material water tank (7), and the raw material outlet (72) on the raw material water tank (7) is communicated with the raw material preheating inlet (43) on the raw material preheater (4).
3. A continuous vacuum distillation apparatus for wastewater according to claim 1 or 2, wherein the raw material preheaters (4) are double raw material preheaters (4) which are arranged side by side from top to bottom by two raw material preheaters (4) bodies and are communicated with each other through a preheating shell side communicating pipe and a preheating tube side communicating pipe.
4. A continuous vacuum distillation apparatus for wastewater according to claim 1 or 2 wherein the bottom heaters (5) are double bottom heaters (5) which are arranged side by side from top to bottom by two bottom heater (5) bodies and are connected by a heating shell side connection pipe and a heating tube side connection pipe.
5. A continuous vacuum distillation apparatus for wastewater as claimed in claim 3, wherein the bottom heaters (5) are double bottom heaters (5) which are arranged side by side from top to bottom by two bottom heater (5) bodies and are connected through a heating shell side connection pipe and a heating tube side connection pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321612522.8U CN220056423U (en) | 2023-06-25 | 2023-06-25 | Continuous reduced pressure distillation plant of waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321612522.8U CN220056423U (en) | 2023-06-25 | 2023-06-25 | Continuous reduced pressure distillation plant of waste water |
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| Publication Number | Publication Date |
|---|---|
| CN220056423U true CN220056423U (en) | 2023-11-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321612522.8U Active CN220056423U (en) | 2023-06-25 | 2023-06-25 | Continuous reduced pressure distillation plant of waste water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220056423U (en) |
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- 2023-06-25 CN CN202321612522.8U patent/CN220056423U/en active Active
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