CN111547923A - Low-temperature distillation treatment equipment for wastewater - Google Patents
Low-temperature distillation treatment equipment for wastewater Download PDFInfo
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- CN111547923A CN111547923A CN202010500324.7A CN202010500324A CN111547923A CN 111547923 A CN111547923 A CN 111547923A CN 202010500324 A CN202010500324 A CN 202010500324A CN 111547923 A CN111547923 A CN 111547923A
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- distillation
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- tank
- dtro
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/26—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof
- C02F2103/28—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof from the paper or cellulose industry
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention relates to a low-temperature distillation treatment device for wastewater, which comprises a waste liquid collecting box, an antifoaming agent box, a distillation device, a distilled water collecting box and a DTRO device, wherein the waste liquid collecting box and the antifoaming agent box are respectively connected with the distillation device, the distillation device is connected with the DTRO device through the distilled water collecting box, the distillation device comprises a distillation tank, a heating coil, a first heat exchanger, a circulating water tank, a second heat exchanger and a condenser, the heating coil, the first heat exchanger, the circulating water tank, the second heat exchanger and the condenser are positioned in the distillation tank, the waste liquid collecting box and the antifoaming agent box are respectively connected with the distillation tank, the distillation tank is connected with the circulating water tank through a first pipeline of the first heat exchanger, the DTRO device comprises a DTRO membrane, and the distilled water collecting. The invention has simple equipment and avoids environmental pollution.
Description
Technical Field
The invention relates to the technical field of wastewater treatment, in particular to a low-temperature wastewater distillation treatment device.
Background
Water is a life source, the worldwide problem of water shortage is more and more serious, water saving is advocated all the time, and as the industrial production industry of water consumers, emission reduction of industrial water should be well done, the cyclic utilization rate of water is improved, and waste of industrial water is avoided. Meanwhile, the environmental pollution problem is becoming more serious, environmental awareness is improved, and the reduction of the emission of pollutants, especially pollutants in industrial production, is one of the important causes of environmental pollution, and how to treat the emission of industrial pollution sources becomes an important measure for reducing the environmental pollution.
The paper-making industry is an industry with serious discharge of polluted water sources, a large amount of water is required in the paper-making process, and a large amount of polluted water sources discharged by a traditional paper mill pollute water quality and soil and generate a large amount of unpleasant odor. The waste water discharged by a paper mill contains papermaking fibers remained in the waste water in the papermaking process, so that the loss and waste of the papermaking fibers are caused; the waste water of paper mill also contains papermaking additive, most of which is non-volatile and can remain in soil or sewage, and the pollution which can not be eliminated for a long time can be caused when the waste water is discharged in the environment. The papermaking industry is also an industry which needs to consume a large amount of heat energy, and the papermaking wastewater contains heat energy and has the problem of heat energy waste when being directly discharged.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the problems of environmental pollution and energy waste in the prior art, thereby providing the low-temperature distillation treatment equipment for the wastewater, which avoids environmental pollution and energy waste.
In order to solve the technical problem, the low-temperature distillation treatment equipment for wastewater comprises a waste liquid collecting box, an antifoaming agent box, distillation equipment, a distilled water collecting box and a DTRO (draw texturing yarn ro) equipment, wherein the waste liquid collecting box and the antifoaming agent box are respectively connected with the distillation equipment, the distillation equipment is connected with the DTRO equipment through the distilled water collecting box, the distillation equipment comprises a distillation tank, a heating coil, a first heat exchanger, a circulating water tank, a second heat exchanger and a condenser, the heating coil, the first heat exchanger, the circulating water tank, the second heat exchanger and the condenser are positioned in the distillation tank, the waste liquid collecting box and the antifoaming agent box are respectively connected with the distillation tank, the distillation tank is connected with the circulating water tank through a first pipeline of the first heat exchanger, the circulating water tank is connected with a first pipeline of the second heat exchanger, and the first pipeline of the second heat exchanger is connected with the circulating, the second pipe of the second heat exchanger is connected with the heating coil, the DTRO equipment comprises a DTRO membrane, and the distilled water collecting tank is connected with the DTRO membrane.
In one embodiment of the invention, the heating coil is connected to the second tubing of the second heat exchanger through a condenser.
In one embodiment of the invention, the first heat exchanger is connected to the circulation tank by a venturi tube.
In one embodiment of the invention, the circulation water tank is connected to the second heat exchanger by a circulation water pump.
In one embodiment of the invention, the second heat exchanger is connected to the heating coil by a heat pump.
In one embodiment of the invention, the concentrate return port of the DTRO device is connected to the reject collection tank.
In one embodiment of the present invention, the DTRO plant further comprises a safety filter, and the distilled water collection tank is connected to the DTRO membrane through the safety filter.
In one embodiment of the invention, the DTRO plant further comprises a medicine box, the first output end of the DTRO membrane is connected with a one-way valve and a permeate flow meter in sequence, the second output end of the DTRO membrane is connected with the medicine box, and the medicine box is connected with the safety filter.
In one embodiment of the invention, the distilled water collecting tank and the output end of the medicine tank are connected to the safety filter sequentially through the feed water pump and the pressure sensor.
In one embodiment of the invention, the DTRO membrane is connected to the tank via a proportional valve, a concentrate flow meter.
Compared with the prior art, the technical scheme of the invention has the following advantages:
the low-temperature distillation treatment equipment for the wastewater comprises a waste liquid collecting box, an antifoaming agent box, distillation equipment, a distilled water collecting box and DTRO equipment, wherein waste liquid is arranged in the waste liquid collecting box, an antifoaming agent is arranged in the antifoaming agent box, the waste liquid collecting box and the antifoaming agent box are respectively connected with the distillation equipment so as to convey the waste liquid and the antifoaming agent into the distillation equipment, the antifoaming agent can inhibit boiling of the waste liquid, the distillation equipment is connected with the DTRO equipment through the distilled water collecting box after low-temperature distillation of the waste liquid, water vapor is formed in the waste liquid after low-temperature distillation and is condensed to be distilled water to flow into the distilled water collecting box, and the distilled water discharged from the distilled water collecting box can effectively degrade TDS and COD after being treated by the DTRO equipment so as to reach the standard of direct discharge, according to the invention, after low-temperature distillation, if the cod or Tds of the high-concentration wastewater does not reach the standard, the high-concentration wastewater can reach the discharge standard through degradation by the DTRO equipment 50, so that the equipment is simple, the environmental pollution is avoided, the cost is low, and the popularization and the use are facilitated.
Drawings
In order that the present disclosure may be more readily and clearly understood, reference is now made to the following detailed description of the embodiments of the present disclosure taken in conjunction with the accompanying drawings, in which
FIG. 1 is a schematic view of a low-temperature distillation treatment apparatus for wastewater according to the present invention;
FIG. 2 is a schematic view of a distillation apparatus of the present invention;
fig. 3 is a schematic diagram of a DTRO device of the present invention.
The specification reference numbers indicate: 10-a waste liquid collection tank, 11-a first diaphragm pump, 12-a second diaphragm pump, 13-a concentrate tank, 14-a waste liquid valve, 15-a clear water valve, 16-a concentrate valve, 20-an antifoaming agent tank, 30-a distillation apparatus, 31-a distillation tank, 32-a heating coil, 33-a first heat exchanger, 34-a circulation water tank, 35-a second heat exchanger, 36-a condenser, 37-an expansion valve, 38-a circulation water pump, 39-a heat pump, 40-a distilled water collection tank, 50-a DTRO apparatus, 51-a DTRO membrane, 52-a safety filter, 53-a medicine box, 531-an inlet valve, 532-an outlet valve, 54-a feed pump, 55-a high-pressure pump, 56-a safety valve, 57-a single-phase valve, 58-a flow permeate meter, 60-standard water tank, 61-Venturi tube.
Detailed Description
As shown in fig. 1, 2 and 3, the present embodiment provides a low temperature distillation treatment apparatus for wastewater, comprising a waste liquid collection tank 10, an antifoaming agent tank 20, a distillation apparatus 30, a distilled water collection tank 40, and a DTRO apparatus 50, wherein the waste liquid collection tank 10 and the antifoaming agent tank 20 are respectively connected to the distillation apparatus 30, the distillation apparatus 30 is connected to the DTRO apparatus 50 through the distilled water collection tank 40, the distillation apparatus 30 comprises a distillation tank 31 and a heating coil 32, a first heat exchanger 33, a circulation water tank 34, a second heat exchanger 35, and a condenser 36 which are located in the distillation tank 31, the waste liquid collection tank 10 and the antifoaming agent tank 20 are respectively connected to the distillation tank 31, the distillation tank 31 is connected to the circulation water tank 34 through a first pipe of the first heat exchanger 33, the circulation water tank 34 is connected to a first pipe of the second heat exchanger 35, the first pipe of the second heat exchanger 35 is connected to the circulation tank 34 through the second pipe of the first heat exchanger 33, the second pipe of the second heat exchanger 35 is connected to the heating coil 32, the DTRO device 50 includes a DTRO membrane 51, and the distilled water collection tank 40 is connected to the DTRO membrane 51.
The low temperature distillation treatment equipment for wastewater in this embodiment comprises a waste liquid collecting box 10, an antifoaming agent box 20, a distillation equipment 30, a distilled water collecting box 40, and a DTRO equipment 50, wherein the waste liquid collecting box 10 is filled with waste liquid, the antifoaming agent box 20 is filled with antifoaming agent, the waste liquid collecting box 10 and the antifoaming agent box 20 are respectively connected with the distillation equipment 30, so as to be capable of conveying the waste liquid and the antifoaming agent into the distillation equipment 30, wherein the antifoaming agent can inhibit boiling of the waste liquid, the distillation equipment 30 is connected with the DTRO equipment 50 through the distilled water collecting box 40 after low temperature distillation of the waste liquid, the waste liquid after low temperature distillation forms water vapor, the water vapor is condensed and then changed into distilled water to flow into the distilled water collecting box 40, and the distilled water discharged from the distilled water collecting box 40 can effectively degrade TDS (total dissolved solids) and COD (Chemical Oxygen Demand) after being treated by the DTRO equipment 50, therefore, the invention reaches the standard of direct discharge, if the cod or Tds of the high-concentration wastewater does not reach the standard after low-temperature distillation, the high-concentration wastewater can reach the discharge standard through the degradation of the DTRO equipment 50, the equipment is simple, the environmental pollution is avoided, the cost is low, and the invention is favorable for popularization and use.
The working process of the wastewater low-temperature distillation treatment equipment is discussed as follows:
the waste liquid is sucked into the waste liquid collecting box 11 through the first diaphragm pump 11, the liquid level in the box reaches a high limit, the first diaphragm pump 11 is closed, and the distillation equipment 30 is opened; the distillation equipment 30 sucks waste liquid from the waste liquid collecting box 10, the waste liquid enters the distillation equipment 30, and the waste liquid is stopped being sucked when the set liquid level is reached; proportionally sucking the defoaming agent, starting heating when the preset vacuum value is reached, forming water vapor, condensing the water vapor into distilled water, flowing into the distillation equipment 30, and detecting the water quality by using a conductivity sensor; when the liquid is distilled to a preset low liquid level, the waste liquid and the defoaming agent are sucked again, the distillation is repeated for a plurality of times, the concentrated solution is discharged when the proportion reaches a preset standard, and the concentrated solution is conveyed to the concentrated solution tank 13 through the second diaphragm pump 12; performing backwashing on the distillation equipment 30, continuously sucking waste liquid and defoaming agent for distillation, and repeatedly working within a set time; when the distilled water collecting box 40 reaches the upper liquid level, the DTRO equipment 50 is started to treat the distilled water, concentrated water flows back into the waste liquid collecting box 10, and standard-reaching wastewater flows into the standard-reaching water tank 60 to stop and automatically execute the back-cleaning primary equipment.
As shown in fig. 2 and 3, the operation of the distillation apparatus 30 is explained in detail as follows:
the distillation apparatus 30 comprises a distillation tank 31, and a heating coil 32, a first heat exchanger 33, a circulating water tank 34, a second heat exchanger 35 and a condenser 36 which are arranged in the distillation tank 31, wherein the waste liquid collection tank 10 and the defoaming agent tank 20 are respectively connected with the distillation tank 31, so that a mixture of distilled water, waste liquid and distilled gas can be formed by conveying the waste liquid and the defoaming agent into the distillation tank 31, the distillation tank 31 is connected with the circulating water tank 34 through a first pipeline of the first heat exchanger 33, so that the mixture of the distilled water, the waste liquid and the distilled gas can be cooled to form the mixture of the distilled water and the waste liquid, the circulating water tank 34 is connected with a first pipeline of the second heat exchanger 35, the first pipeline of the second heat exchanger 35 is connected with the circulating water tank 34 through a second pipeline of the first heat exchanger 33, so that energy recovery is facilitated, the utilization ratio of the energy is provided, the second pipeline of the second heat exchanger 35 with the heating coil 32 is connected, thereby be favorable to right distilled water and waste liquid heat, the effectual energy saving simultaneously, DTRO equipment 50 includes DTRO membrane 51, distilled water collecting box 40 with DTRO membrane 51 links to each other, the distilled water passes through behind the DTRO membrane 51, can effectively degrade TDS and COD, thereby reach the standard of direct emission.
In this embodiment, the waste liquid is sucked into the waste liquid collecting box 11 through the first diaphragm pump 11. In addition, it is necessary to perform PH detection for the liquids in the waste liquid collecting tank 10 and the distilled water collecting tank 40, respectively. The concentrated solution output port of the distillation apparatus 30 is connected to the concentrated solution tank 13 through the second diaphragm pump 12.
The heating coil 32 is connected to the second pipe of the second heat exchanger 35 through the condenser 36, so that the distilled water discharged through the heating coil 32 is reused, and energy is saved effectively. Specifically, the condenser 36 is connected to the second pipe of the second heat exchanger 35 through an expansion valve 37, and the expansion valve 37 functions to throttle pressure reduction and regulate flow rate.
The first heat exchanger 33 is connected with the circulating water tank 34 through a venturi tube 61, negative pressure can be formed in the distillation tank 31 through the venturi tube 61, so that waste liquid in the waste liquid collecting tank 10 can be sucked into the distillation equipment 30, and after defoaming agent is sucked in proportion, heating is started when a preset vacuum value is reached, which is beneficial to forming water vapor.
The circulation tank 34 is connected to the second heat exchanger 35 by a circulation water pump 38, thereby facilitating the transfer of the distilled water in the circulation tank 34 to the second heat exchanger 35. Further, the mixture of the distilled water and the waste liquid discharged from the circulation tank 34 is heated by the second heat exchanger 35, and then, is returned to the first heat exchanger 33, and after being cooled, is returned to the circulation tank 34 through the venturi tube 61.
The second heat exchanger 35 is connected to the heating coil 32 by means of a heat pump 39, so as to facilitate the transport of the mixture of distilled water and waste liquid exiting the second heat exchanger 35 into the heating coil 32. The cold end pipeline of the heat pump 39 cools the circulating water in the second heat exchanger 35, the hot end pipeline of the heat pump 39 heats the waste liquid through the heating coil 32, and the redundant heat is discharged after being cooled by the condenser 36.
In addition, a waste liquid valve is arranged between the waste liquid collecting box 10 and the distillation equipment 30, waste liquid enters the distillation tank 31 through the waste liquid valve, a defoaming agent valve is arranged between the defoaming agent box 20 and the distillation equipment 30, and defoaming agent enters the distillation tank 31 through the defoaming agent valve.
The distilled water flowing out of the first heat exchanger 33 can overflow from the circulating water tank 34, so that the distilled water can be recycled and used for cleaning equipment after passing through a cleaning valve. The concentrate formed in the distillation tank 31 is discharged through a concentrate valve. The distillation tank 31 is also provided with a pressure relief pipeline, and the negative pressure in the distillation tank 31 is discharged through a pressure relief valve.
As shown in fig. 3, the operation principle of the DTRO device 50 is described in detail as follows:
the concentrate return port of the DTRO device 50 is connected to the waste liquid collection tank 10, thereby facilitating collection of waste liquid.
The DTRO apparatus further comprises a safety filter 52, and the distilled water collection tank 40 is connected to the DTRO membrane 51 through the safety filter 52, thereby facilitating separation of distilled water from the waste liquid and preventing the discharged waste liquid from polluting the environment.
The DTRO plant 50 further comprises a tank 53, a first output of the DTRO membrane 51 being connected in series to a one-way valve 57, a permeate flow meter 58, and thus available for use in cleaning the plant; a second output of the DTRO membrane 51 is connected to the medicine box 53, and the medicine box 53 is connected to the security filter 52.
The output ends of the distilled water collecting box 40 and the medicine box 53 are connected with the safety filter 52 sequentially through the feeding pump 54 and the pressure sensor, so that the distilled water in the distilled water collecting box 40 and the medicines in the medicine box 53 can be conveyed into the safety filter 52, the equipment is effectively cleaned, and the effect of separating the distilled water from the waste liquid is ensured.
The DTRO membrane 51 is connected to the medicine tank 53 through a proportional valve and a rich water flow meter. Wherein the proportional valve comprises an electric proportional valve and a manual proportional valve.
During normal operation, waste liquid passes through the waste liquid valve 14, then passes through the feeding pump 54, the safety filter 52, the high-pressure pump 55, the safety valve 56, the DTRO membrane 51, the electric proportional valve, the manual proportional valve and the flow meter, and then passes through the concentrated water valve to return concentrated water, the flow of the electric proportional valve is automatically adjusted, and standard waste water flows out of the DTRO membrane 51, is discharged through the single-phase valve 57 and the penetrating fluid flow meter 58, and completely meets the discharge requirement.
When the equipment is shut down or abnormal: when the preset shutdown time value is reached, the clean water valve 15 is opened, and the clean water is discharged through the concentrated water valve 16 after the equipment is cleaned.
If the safety filter 52 is clogged: and if the first pressure sensor is larger than the preset value, the safety filter cotton core is replaced. If the DTRO membrane 51 is clogged: when the second pressure sensor is larger than the preset value, the medicine box 53 is filled with cleaning medicine, and the inlet valve 531 and the outlet valve 532 of the medicine box 53 are opened to use medicine cleaning equipment. Protection of the DTRO membrane 51: the equipment is not used for a long time, the medicine chest is added with protective solution (the temperature is lower than 0 ℃ and the antifreeze solution is added), and the inlet valve and the outlet valve are opened for circulation.
In this embodiment, the low temperature is in the range of 28 ° to 37 °.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. The utility model provides a waste water cryogenic distillation treatment facility which characterized in that: the distillation device comprises a waste liquid collecting box, an antifoaming agent box, a distillation device, a distilled water collecting box and a DTRO device, wherein the waste liquid collecting box and the antifoaming agent box are respectively connected with the distillation device, the distillation device is connected with the DTRO device through the distilled water collecting box, the distillation device comprises a distillation tank, a heating coil, a first heat exchanger, a circulating water tank, a second heat exchanger and a condenser, the heating coil, the first heat exchanger, the circulating water tank, the second heat exchanger and the condenser are positioned in the distillation tank, the waste liquid collecting box and the antifoaming agent box are respectively connected with the distillation tank, the distillation tank is connected with the circulating water tank through a first pipeline of the first heat exchanger, the circulating water tank is connected with a first pipeline of the second heat exchanger, the first pipeline of the second heat exchanger is connected with the circulating water tank through a second pipeline of the first heat exchanger, and the second pipeline of the, the DTRO equipment comprises a DTRO membrane, and the distilled water collecting box is connected with the DTRO membrane.
2. The apparatus for low-temperature distillation treatment of wastewater according to claim 1, characterized in that: the heating coil is connected with the second pipeline of the second heat exchanger through a condenser.
3. The apparatus for low-temperature distillation treatment of wastewater according to claim 1, characterized in that: the first heat exchanger is connected with the circulating water tank through a venturi tube.
4. The apparatus for low-temperature distillation treatment of wastewater according to claim 1, characterized in that: the circulating water tank is connected with the second heat exchanger through a circulating water pump.
5. The wastewater cryogenic distillation treatment apparatus according to claim 1 or 4, characterized in that: the second heat exchanger is connected with the heating coil through a heat pump.
6. The apparatus for low-temperature distillation treatment of wastewater according to claim 1, characterized in that: and a concentrated water return port of the DTRO equipment is connected with the waste liquid collecting box.
7. The wastewater cryogenic distillation treatment apparatus according to claim 1 or 6, characterized in that: the DTRO equipment also comprises a safety filter, and the distilled water collecting box is connected with the DTRO membrane through the safety filter.
8. The apparatus for low-temperature distillation treatment of wastewater according to claim 7, characterized in that: the DTRO equipment further comprises a medicine box, wherein the first output end of the DTRO membrane is sequentially connected with the one-way valve and the penetrating fluid flow meter, the second output end of the DTRO membrane is connected with the medicine box, and the medicine box is connected with the safety filter.
9. The apparatus for low-temperature distillation treatment of wastewater according to claim 8, characterized in that: and the distilled water collecting box and the output end of the medicine box are connected with the safety filter sequentially through the feed water pump and the pressure sensor.
10. The apparatus for low-temperature distillation treatment of wastewater according to claim 8, characterized in that: and the DTRO membrane is connected with the medicine chest through a proportional valve and a concentrated water flowmeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010500324.7A CN111547923A (en) | 2020-06-04 | 2020-06-04 | Low-temperature distillation treatment equipment for wastewater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010500324.7A CN111547923A (en) | 2020-06-04 | 2020-06-04 | Low-temperature distillation treatment equipment for wastewater |
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| CN111547923A true CN111547923A (en) | 2020-08-18 |
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| CN202010500324.7A Pending CN111547923A (en) | 2020-06-04 | 2020-06-04 | Low-temperature distillation treatment equipment for wastewater |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112028745A (en) * | 2020-09-28 | 2020-12-04 | 锡矿山闪星锑业有限责任公司 | Method for recovering ethylene glycol from water generated by reaction of ethylene glycol antimony |
| CN112093836A (en) * | 2020-10-13 | 2020-12-18 | 昆山市博事杰机械科技有限公司 | Waste water heat pump type low-temperature evaporator |
| CN114425169A (en) * | 2020-09-09 | 2022-05-03 | 中国石油化工股份有限公司 | Method and system for evaporation concentration |
-
2020
- 2020-06-04 CN CN202010500324.7A patent/CN111547923A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114425169A (en) * | 2020-09-09 | 2022-05-03 | 中国石油化工股份有限公司 | Method and system for evaporation concentration |
| CN112028745A (en) * | 2020-09-28 | 2020-12-04 | 锡矿山闪星锑业有限责任公司 | Method for recovering ethylene glycol from water generated by reaction of ethylene glycol antimony |
| CN112093836A (en) * | 2020-10-13 | 2020-12-18 | 昆山市博事杰机械科技有限公司 | Waste water heat pump type low-temperature evaporator |
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