CN213930868U - Clean utilization system of dirty waste water waste heat of industry - Google Patents
Clean utilization system of dirty waste water waste heat of industry Download PDFInfo
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- CN213930868U CN213930868U CN202022715935.1U CN202022715935U CN213930868U CN 213930868 U CN213930868 U CN 213930868U CN 202022715935 U CN202022715935 U CN 202022715935U CN 213930868 U CN213930868 U CN 213930868U
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Abstract
The utility model discloses a clean utilization system of dirty waste water waste heat of industry, the dirty waste water of the higher industry of temperature produces low pressure steam through the dirty waste water flash vessel of industry, and low pressure steam gets into the heat release side of condensing heat exchanger after the tiny liquid drop that its carried is detached to the steam defroster, and low pressure steam takes place the phase transition condensation in the condensing heat exchanger and releases heat, produces the condensate water to collect retrieval and utilization behind the condensate water collecting box. And the low-temperature medium enters the heat absorption side of the condensing heat exchanger, absorbs heat released by low-pressure steam condensation at the heat release side of the condensing heat exchanger, and is conveyed to a waste heat using system after the temperature is increased. The utility model discloses the low pressure steam that industrial waste water flash vessel that can significantly reduce produced carries the impurity and the chloride ion volume that get into the condensation heat exchanger to effectively prevent the emergence of condensation heat exchanger jam and corrosion phenomena, guarantee the long-term safety and stability operation of condensation heat exchanger, and can improve the condensate quality, thereby enlarge the application range of condensate.
Description
Technical Field
The utility model belongs to the technical field of waste heat utilization, a clean utilization system of dirty waste water waste heat of industry is related to.
Background
With the rapid development of economy in China, the total energy consumption is gradually increased, but the unit GDP energy consumption is far higher than the advanced level in the world. The waste heat is used as secondary energy generated in industrial production, and has huge development and utilization potential under the condition of huge industrial production scale in China. The development of the industrial waste heat recycling technology can effectively save fossil fuels and improve the utilization efficiency of industrial energy in China. Meanwhile, most of industrial waste heat exists in the externally discharged high-temperature industrial sewage, impurities and corrosive chloride ions contained in the industrial sewage easily cause the problems of blockage and corrosion of a heat exchanger, and the problem causes great difficulty in recovering the waste heat contained in the industrial sewage. In order to overcome the difficulties, the mode which is mostly adopted at present is a low-pressure flash evaporation technology, and industrial waste heat is extracted through phase change heat exchange. However, when steam is generated in the flash evaporator, industrial sewage and wastewater droplets with smaller particle sizes are also generated, and the droplets can enter the waste heat utilization heat exchanger along with the steam flow, so that the blockage and corrosion of the heat exchanger can be caused after long-term operation.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the shortcoming of above-mentioned current dirty waste water waste heat utilization technique of industry, provide a clean utilization system of dirty waste water waste heat of industry, can effectively intercept the tiny liquid drop that the dirty waste water of industry carried in the low pressure steam flow that produces in the flash vessel, avoid the long-term accumulation of harmful substance that contains in the tiny liquid drop to jam and the corrosion problem that the waste heat utilization heat exchanger caused, guarantee the long-term high-efficient operation of waste heat utilization heat exchanger.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a system for cleaning and utilizing industrial sewage waste water waste heat comprises an industrial sewage waste water flash evaporator inlet pipeline, an industrial sewage waste water flash evaporator outlet pipeline, a steam demister, a condensing heat exchanger and a condensed water collecting box;
wherein, an inlet pipeline of the industrial sewage and wastewater flash evaporator is communicated with the industrial sewage and wastewater flash evaporator, and the industrial sewage and wastewater flash evaporator is communicated with an outlet pipeline of the industrial sewage and wastewater flash evaporator; the industrial sewage flash evaporator is connected with the heat release side of the condensing heat exchanger through the steam demister, and the heat release side of the condensing heat exchanger is connected with the condensed water collecting tank.
The utility model discloses further improvement lies in, and the steam defroster is one-level or multistage high-efficient defroster.
The utility model discloses a further improvement lies in, and the dirty waste water flash vessel of industry passes through steam conduit and links to each other with the steam defroster, and the steam defroster passes through steam conduit and links to each other with condensation heat exchanger heat release side.
The utility model discloses a further improvement lies in that condensation heat exchanger heat release side links to each other with the condensate collection water tank through condensate pipe.
The utility model has the further improvement that the utility model also comprises a condensed water recycling pump, a condensed water recycling pipeline and a condensed water recycling system; the inlet of the condensed water recycling pump is connected with the bottom of the condensed water collecting box, and the outlet of the condensed water recycling pump is connected with a condensed water recycling system through a condensed water recycling pipeline.
The utility model has the further improvement that the utility model also comprises a low temperature medium pipeline, a high temperature medium pipeline and a waste heat using system; the low-temperature medium pipeline is connected with the heat absorption side inlet of the condensing heat exchanger, and the heat absorption side outlet of the condensing heat exchanger is connected with the waste heat using system through the high-temperature medium pipeline.
The utility model discloses further improvement lies in, when the dirty waste water flash vessel of industry is multistage, the liquid outlet of the dirty waste water flash vessel of every grade industry links to each other with the liquid inlet of the dirty waste water flash vessel of adjacent industry.
The utility model discloses a further improvement lies in, is provided with a steam defroster between the steam outlet of every grade industry dirty waste water flash vessel and the heat side that the condensation heat exchanger gives off heat.
The industrial sewage waste water waste heat clean utilization method based on the system comprises the steps that industrial sewage waste water enters an industrial sewage flash evaporator through an inlet pipeline of the industrial sewage flash evaporator, and the industrial sewage waste water with reduced temperature and reduced and concentrated is discharged through an outlet pipeline of the industrial sewage flash evaporator; steam generated in the industrial sewage and wastewater flash evaporator enters a heat-releasing side of a condensing heat exchanger for condensation phase change heat release after fine liquid drops carried by the steam are removed under the action of inertial separation of a steam demister, and condensed water generated by steam condensation enters a condensed water collecting box for collection through a condensed water pipeline.
The utility model discloses further improvement lies in, the condensate water of collecting in the condensate water collection box, through condensate water retrieval and utilization pump, via condensate water retrieval and utilization pipe-line transportation to condensate water recycling system.
The utility model discloses further improvement lies in, low temperature medium water gets into the heat absorption side of condensation heat exchanger through low temperature medium pipeline, absorbs the heat that the steam of the heat release side of condensation heat exchanger condenses the heat that releases, and the temperature risees the back and carries to waste heat use system through high temperature medium pipeline.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses a set up the steam defroster, can detach the tiny liquid drop that the low pressure steam that the dirty waste water of industry produced in the dirty waste water flash vessel of industry carried to the low pressure steam that can significantly reduce carries the impurity and the chloride ion volume that get into the condensation heat exchanger, thereby effectively prevents that the condensation heat exchanger from blockking up and corroding, and the low pressure steam takes place the phase transition condensation in the condensation heat exchanger and releases heat, but the condensate water retrieval and utilization of production.
Dirty waste water waste heat clean utilization system of industry at the during operation, carry the dirty waste water of higher industry of temperature earlier to the dirty waste water flash vessel of industry and produce low pressure steam, low pressure steam removes its tiny liquid drop of carrying through the steam defroster, can the greatly reduced it carries the impurity and the chloride ion volume that get into the condensation heat exchanger to effectively prevent the emergence of condensation heat exchanger jam and corrosion phenomena, guarantee the long-term safe and stable operation of condensation heat exchanger. The reduction of the amount of impurities and chloride ions entering the condensing heat exchanger can also improve the quality of condensed water, thereby enlarging the application range of the condensed water. Simultaneously the utility model discloses make the dirty waste water of industry obtain decrement and concentration, can reduce the dirty waste water subsequent processing cost of industry, the waste heat of recovery can be used to uses such as heat supply, reduces energy use cost, increases economic benefits.
Drawings
FIG. 1 is a schematic structural diagram of a primary industrial sewage and wastewater flash evaporator;
fig. 2 is a schematic structural diagram of the multistage industrial sewage and wastewater flash evaporator.
The system comprises an industrial sewage flash evaporator inlet pipeline, an industrial sewage flash evaporator, a condensate collecting box, a condensate recycling pump, a condensate recycling pipeline, a low-temperature medium pipeline, a high-temperature medium pipeline, a first steam demister, a second steam demister, a nth steam demister, a first steam pipeline, a second steam pipeline, a nth steam demister, a first steam pipeline, a second steam pipeline and a nth steam pipeline, wherein 1 is the industrial sewage flash evaporator inlet pipeline, 2 is the industrial sewage flash evaporator, 3 is the industrial sewage flash evaporator outlet pipeline, 4 is the steam demister, 5 is the steam pipeline, 6 is the condensing heat exchanger, 7 is the condensate collecting box, 8 is the condensate recycling pump, 10 is the condensate recycling pipeline, 11 is the low-temperature medium pipeline, 12 is the high-temperature medium pipeline, 4-1 is the first steam demister, 4-2 is the second steam demister, 4-n is the nth steam demister, 5-1 is the first steam pipeline, 5-2 is the nth steam pipeline.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example 1A primary industrial sewage and wastewater flash evaporator is arranged
Referring to fig. 1, dirty waste water waste heat clean utilization system of industry, including dirty waste water flash vessel inlet pipeline 1 of industry, dirty waste water flash vessel 2 of industry, dirty waste water flash vessel outlet pipeline 3 of industry, steam defroster 4, steam conduit 5, condensation heat exchanger 6, condensate pipe 7, condensate collecting box 8.
The industrial sewage flash evaporator inlet pipeline 1 is communicated with the industrial sewage flash evaporator 2, the industrial sewage flash evaporator 2 is communicated with the industrial sewage flash evaporator outlet pipeline 3, the industrial sewage flash evaporator 2 is connected with the steam demister 4 through the steam pipeline 5, and the steam demister 4 can be set as one-level or multi-level high-efficiency demister as required. Steam defroster 4 links to each other with the heat side that gives off of condensing heat exchanger 6 through steam conduit 5, and the heat side that gives off of condensing heat exchanger 6 is continuous with condensate collection water tank 8 through condensate pipeline 7.
The utility model discloses still include condensate water retrieval and utilization pump 9, condensate water retrieval and utilization pipeline 10 and condensate water retrieval and utilization system. The inlet of the condensed water recycling pump 9 is connected with the bottom of the condensed water collecting box 8, and the outlet of the condensed water recycling pump 9 is connected with a condensed water recycling system through a condensed water recycling pipeline 10.
The utility model discloses still include low temperature medium pipeline 11, high temperature medium pipeline 12 and waste heat use system. The low-temperature medium pipeline 11 is connected with the heat absorption side inlet of the condensing heat exchanger 6, and the heat absorption side outlet of the condensing heat exchanger 6 is connected with the waste heat using system through the high-temperature medium pipeline 12.
Example 2 setting up a multistage industrial wastewater flash evaporator
Referring to fig. 2, the present embodiment is different from embodiment 1 in that: when the industrial sewage and wastewater flash evaporator 2 is a multi-stage flash evaporator, steam generated by each stage of flash evaporator is respectively connected with the corresponding first steam demister 4-1, the second steam demister 4-2 and the n-th steam demister 4-n through the first steam pipeline 5-1, the second steam pipeline 5-2 and the n-th steam pipeline 5-n, then enters the heat release side of the condensing heat exchanger 6 in a subsection manner to be condensed and released, and condensed water generated by each section of condensation enters the condensed water collecting box 8 after converging into the condensed water pipeline 7. The liquid outlet of each stage of industrial sewage flash evaporator 2 is connected with the liquid inlet of the adjacent industrial sewage flash evaporator 2, and the steam outlet of each stage of industrial sewage flash evaporator 2 is connected with the heat release side of the condensing heat exchanger 6 through the steam demister 4. Namely, a steam demister 4 is arranged between the steam outlet of each stage of industrial sewage and wastewater flash evaporator 2 and the heat release side of the condensing heat exchanger 6. The significance of the implementation of the embodiment is that the steam demister 4, the steam pipeline 5 and the steam unit system configuration generated by each stage of the multi-stage industrial wastewater flash evaporator 2 ensure that each stage of steam with different temperatures can remove carried fine liquid drops without mixing.
The method for cleaning and utilizing the waste heat of the industrial sewage and the waste water comprises the following steps: industrial sewage with higher temperature enters an industrial sewage flash evaporator 2 through an industrial sewage flash evaporator inlet pipeline 1, and as the pressure in the industrial sewage flash evaporator 2 is smaller than the saturated vapor pressure corresponding to the industrial sewage with higher temperature, a part of industrial sewage is rapidly gasified, so that the temperature of the industrial sewage is reduced. The industrial sewage after temperature reduction and decrement concentration is discharged through an outlet pipeline 3 of the industrial sewage flash evaporator.
Steam that produces in the dirty waste water flash vessel of industry 2 reachs steam defroster 4 through steam pipeline 5, and steam defroster 4 gets rid of the tiny liquid drop that steam carried through inertial separation effect, and then steam gets into 6 exothermic sides of condensing heat exchanger and carries out the condensation phase transition and release heat, and steam condensation can produce the negative pressure, for steam is by the dirty waste water flash vessel of industry 2 to the flowing power that provides of condensing heat exchanger 6, and the condensate that steam condensation produced gets into condensate collecting box 8 through condensate pipeline 7 and collects. The condensed water collected in the condensed water collecting tank 8 is transported to the condensed water recycling system through a condensed water recycling pipe 10 by a condensed water recycling pump 9.
The low-temperature medium water enters the heat absorption side of the condensing heat exchanger 6 through the low-temperature medium pipeline 11, absorbs heat released by steam condensation at the heat release side of the condensing heat exchanger 6, and is conveyed to a waste heat using system through the high-temperature medium pipeline 12 after the temperature is increased.
The utility model discloses can effectively intercept tiny liquid drop that carries in the low pressure steam flow that produces in the dirty waste water flash vessel of industry 2, block up and the corrosion problem that long-term accumulations such as impurity and chloride ion that contain in the tiny liquid drop caused condensing heat exchanger 6, have important meaning to guaranteeing the long-term safety and stability operation of condensing heat exchanger 6.
Claims (8)
1. The system for cleaning and utilizing the waste heat of the industrial sewage and the waste water is characterized by comprising an inlet pipeline (1) of an industrial sewage and waste water flash evaporator, an industrial sewage and waste water flash evaporator (2), an outlet pipeline (3) of the industrial sewage and waste water flash evaporator, a steam demister (4), a condensing heat exchanger (6) and a condensed water collecting box (8);
wherein, the industrial sewage flash evaporator inlet pipeline (1) is communicated with the industrial sewage flash evaporator (2), and the industrial sewage flash evaporator (2) is communicated with the industrial sewage flash evaporator outlet pipeline (3); the industrial sewage and wastewater flash evaporator (2) is connected with the heat release side of the condensing heat exchanger (6) through the steam demister (4), and the heat release side of the condensing heat exchanger (6) is connected with the condensed water collecting box (8).
2. The system for cleaning and utilizing the waste heat of the industrial sewage and wastewater as claimed in claim 1, wherein the steam demister (4) is a one-stage or multi-stage high-efficiency demister.
3. The system for cleaning and utilizing the waste heat of the industrial sewage and wastewater as claimed in claim 1, wherein the industrial sewage and wastewater flash evaporator (2) is connected with the steam demister (4) through a steam pipeline (5), and the steam demister (4) is connected with the heat releasing side of the condensing heat exchanger (6) through the steam pipeline (5).
4. The system for cleanly utilizing the waste heat of the industrial sewage and the waste water is characterized in that the heat release side of the condensing heat exchanger (6) is connected with a condensed water collecting box (8) through a condensed water pipeline (7).
5. The system for cleaning and utilizing the waste heat of the industrial sewage and wastewater as claimed in claim 1, further comprising a condensed water recycling pump (9), a condensed water recycling pipeline (10) and a condensed water recycling system; the inlet of the condensed water recycling pump (9) is connected with the bottom of the condensed water collecting box (8), and the outlet of the condensed water recycling pump (9) is connected with a condensed water recycling system through a condensed water recycling pipeline (10).
6. The system for cleaning and utilizing the waste heat of the industrial sewage and wastewater as claimed in claim 1, further comprising a low-temperature medium pipeline (11), a high-temperature medium pipeline (12) and a waste heat utilization system; the low-temperature medium pipeline (11) is connected with the heat absorption side inlet of the condensing heat exchanger (6), and the heat absorption side outlet of the condensing heat exchanger (6) is connected with the waste heat using system through the high-temperature medium pipeline (12).
7. The industrial sewage waste water waste heat cleaning and utilizing system according to claim 1, wherein when the industrial sewage waste water flash evaporator (2) is in multiple stages, the liquid outlet of each stage of industrial sewage waste water flash evaporator (2) is connected with the liquid inlet of the adjacent industrial sewage waste water flash evaporator (2).
8. The system for cleaning and utilizing the waste heat of the industrial sewage and wastewater as claimed in claim 7, wherein a steam demister is arranged between the steam outlet of each stage of industrial sewage and wastewater flash evaporator (2) and the heat release side of the condensing heat exchanger (6).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022715935.1U CN213930868U (en) | 2020-11-21 | 2020-11-21 | Clean utilization system of dirty waste water waste heat of industry |
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| CN202022715935.1U CN213930868U (en) | 2020-11-21 | 2020-11-21 | Clean utilization system of dirty waste water waste heat of industry |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115520935A (en) * | 2022-09-29 | 2022-12-27 | 中冶焦耐(大连)工程技术有限公司 | Method and system for recovering high-temperature condensed water of coking plant |
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2020
- 2020-11-21 CN CN202022715935.1U patent/CN213930868U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115520935A (en) * | 2022-09-29 | 2022-12-27 | 中冶焦耐(大连)工程技术有限公司 | Method and system for recovering high-temperature condensed water of coking plant |
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