CN210645164U - Vacuum low-temperature spray evaporation condensation system - Google Patents
Vacuum low-temperature spray evaporation condensation system Download PDFInfo
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- CN210645164U CN210645164U CN201921588869.7U CN201921588869U CN210645164U CN 210645164 U CN210645164 U CN 210645164U CN 201921588869 U CN201921588869 U CN 201921588869U CN 210645164 U CN210645164 U CN 210645164U
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Abstract
The utility model relates to a vacuum low-temperature spray evaporation condensing system, which comprises a spray tank, a cyclone separator, a demisting tank, an oil-gas separator, a condensation compression tank and a circulating water cooling machine; a circulating sewage spraying device is arranged at the top of the spraying tank; an air outlet is formed in the side part of the spray can; the exhaust port of the spray tank is communicated with the air suction port of the vacuum pump; the gas outlet of the vacuum pump is communicated with the dust-containing gas inlet of the cyclone separator; the filtered gas outlet of the cyclone separator is communicated with the gas inlet of the demisting tank; an exhaust port of the demisting tank is communicated with an oil-gas inlet of the oil-gas separator; an exhaust port of the oil-gas separator is communicated with an air inlet of the condensation compression tank; the condensation compression tank is provided with an overflow pipe. The utility model discloses the maintenance cost is low, need not to add the medicament, can realize the maximize concentration, and it is good to go out water quality.
Description
Technical Field
The utility model relates to an industrial sewage minimizing treatment technical field, concretely relates to vacuum low temperature spraying evaporation condensation system.
Background
Energy and environmental issues have become increasingly prominent in industrial production, which puts higher demands on energy saving technology. The discharge of industrial wastewater causes serious environmental pollution, in order to protect the environment, the sewage discharge needs to be strictly controlled, each enterprise producing industrial wastewater needs to discharge sewage after treating the sewage in a special sewage treatment plant, and the sewage treatment plant generally charges according to the treatment capacity, for example, one ton and several thousand yuan, so the cost of the enterprise on sewage treatment is greatly increased.
The heat pump technology is an efficient and environment-friendly energy-saving technology, and can be widely applied to the industrial production fields of emulsion wastewater, cleaning agent wastewater, release agent wastewater, rolling fluid wastewater, heat treatment wastewater, degreasing wastewater, electroplating wastewater, printing ink wastewater, passivation wastewater, phosphating wastewater, garbage penetrating fluid, seawater desalination and the like. After the heat pump evaporation concentration, the distilled water meeting the discharge standard can be extracted from the sewage, the distilled water can be directly discharged or recycled, the rest concentrate is discharged to a sewage treatment plant for treatment, and the sewage treatment cost of an enterprise can be greatly reduced, for example, 10 tons of sewage can be decomposed into 9 tons of distilled water and 1 ton of concentrate after the evaporation concentration, and the enterprise only needs to spend the cost of 1 ton of treatment capacity, so that the sewage treatment cost is greatly reduced.
However, most of the existing triple-effect evaporators or MVR concentration equipment have the advantages that the evaporation temperature is 90-100 ℃, the scale generation speed is high, the maintenance cost is high, the service life of the equipment is short, the quality of the discharged water does not reach the standard, in order to solve the problem that the quality of the discharged water does not reach the standard in the prior art, the subsequent treatment cost and treatment procedures are greatly increased, a large amount of solid wastes are generated, and the environmental protection is influenced. Therefore, the development of the heat pump evaporation and concentration system with low cost, low maintenance cost, long service life and good effluent quality is significant.
SUMMERY OF THE UTILITY MODEL
To the not enough of prior art, the utility model discloses a vacuum low temperature spraying evaporation condensing system.
The utility model discloses the technical scheme who adopts as follows:
a vacuum low-temperature spray evaporation condensation system comprises a spray tank, a cyclone separator, a demisting tank, an oil-gas separator, a condensation compression tank and a circulating water cooling machine; the top of the spraying tank is provided with a spraying device; an air outlet is formed in the side part of the spray can; the exhaust port of the spray tank is communicated with the air suction port of the vacuum pump; the gas outlet of the vacuum pump is communicated with the dust-containing gas inlet of the cyclone separator; the filtered gas outlet of the cyclone separator is communicated with the gas inlet of the demisting tank; an exhaust port of the demisting tank is communicated with an oil-gas inlet of the oil-gas separator; an exhaust port of the oil-gas separator is communicated with an air inlet of the condensation compression tank; the liquid outlet of the condensation compression tank is communicated with the liquid inlet of the circulating water cooling machine; and the liquid outlet of the circulating water cooling machine is communicated with the liquid recovery port of the condensation compression tank.
The further technical scheme is as follows: and a concentrated solution discharge pipeline is arranged at the lower part of the spraying tank.
The further technical scheme is as follows: a valve is arranged at the water inlet of the spray can; the liquid outlet of the spraying device is arranged in the water inlet of the spraying tank.
The further technical scheme is as follows: and the motor of the vacuum pump is controlled by a frequency converter and is used for adjusting the vacuum degree in the spray can.
The further technical scheme is as follows: and concentrated solution discharge pipelines are arranged at the bottoms of the cyclone separator, the demisting tank and the oil-gas separator.
The further technical scheme is as follows: and a circulating water pump is arranged in the circulating water cooling machine.
The utility model has the advantages as follows:
low maintenance cost, no need of adding medicament, realization of maximum concentration and good effluent quality. In particular, the method comprises the following steps of,
1) the method comprises the steps of realizing physical distillation separation by utilizing different evaporation temperatures of water and pollutants in sewage under the same pressure, forming vacuum in a spray tank through a vacuum pump, enabling the amount of water vapor contained in the space in the spray tank to reach the maximum value when the vacuum degree in the spray tank reaches the saturated water vapor pressure minus the standard atmospheric pressure under the temperature, namely, enabling saturated humid air to become gaseous state, not needing to be vaporized until the temperature reaches 100 ℃, and still keeping the liquid state of the pollutants under the condition to be collected in the form of concentrated solution;
2) the circulating water-cooling unit is connected with the condensation compression tank, cooling water in the condensation compression tank is continuously circulated through a circulating water pump of the circulating water-cooling unit, when the cooling water flows into the condensation compression tank, a vacuum generating device of the condensation compression tank condenses vaporized saturated water vapor into liquid while generating vacuum, and the clean condensed water is discharged through a liquid discharge port of the condensation compression tank, so that the quality of discharged water is ensured;
3) the reverse Carnot cycle principle of the water cooling machine during refrigeration is utilized, the high energy efficiency ratio of the water cooling machine during refrigeration power conversion is achieved by fully utilizing the power consumption, and the requirement for external energy is saved compared with the traditional electric heating.
4) Through the circulation sewage atomizer that sets up in the spraying tank, produce the biggest evaporation area in order to evaporate with higher speed, improve sewage treatment ability, indirectly reduced the energy consumption.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. a spray can; 2. a spraying device; 3. a vacuum pump; 4. a cyclone separator; 5. a demisting tank; 6. an oil-gas separator; 7. a condensing and compressing tank; 8. a circulating water cooling machine.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
Fig. 1 is a schematic structural diagram of the present invention. As shown in figure 1, the vacuum low-temperature spray evaporation condensation system comprises a spray tank 1, a cyclone separator 4, a demisting tank 5, an oil-gas separator 6, a condensation compression tank 7 and a circulating water cooling machine 8.
A circulating sewage spraying device 2 is arranged at a water inlet at the top of the spraying tank 1. The side of the spray can 1 is provided with an air outlet. The lower part of the spray can 1 is provided with a concentrated solution discharge pipe B. A valve is arranged at the water inlet of the spray can 1. The bottom of the inner wall of the spraying tank 1 is provided with a liquid level detection device.
The spraying device 2 sprays liquid in the form of extremely fine water particles through a high-pressure system. The sewage to be treated flows in through the liquid inlet A of the spraying device 2 and is sprayed into the spraying tank 1 through the spraying device 2. The exhaust port of the spray can 1 is communicated with the suction port of the vacuum pump 3. The motor of the vacuum pump 3 is controlled by a frequency converter and is used for adjusting the vacuum degree in the spray can 1. The vacuum pump 3 makes the spraying tank 1 form vacuum, when the vacuum degree in the spraying tank 1 reaches the saturated water vapor pressure minus the standard atmospheric pressure at the temperature, the amount of the water vapor contained in the inner space of the tank reaches the maximum value, namely the saturated humid air is changed into gas state, the vaporization does not need to be carried out until the temperature reaches 100 ℃, and the pollutants still keep liquid state and are collected from the lower part of the spraying tank 1 in the form of concentrated liquid through a concentrated liquid discharge pipeline B.
The air outlet of the vacuum pump 3 is communicated with the dust-containing gas inlet of the cyclone separator 4. After the sewage is atomized by the atomizing device 2 at the top of the atomizing tank 1 and then sprayed into the atomizing tank 1, the sewage is rapidly evaporated under the vacuum condition provided by the vacuum pump 3, water is converted into water vapor to form mixed gas containing small pollutant droplets, part of the small pollutant droplets are converged at the bottom of the atomizing tank 1 under the action of gravity and centrifugal force to form concentrated solution, and the other part of the small pollutant droplets are pumped into the cyclone separator 4 along with the water vapor by the vacuum pump 3.
The filtered gas outlet of the cyclone separator 4 is communicated with the gas inlet of the demisting tank 5. The cyclone 4 is a device for separating a gas-liquid system, and the working principle is that the outer wall surface of liquid particles with larger inertial centrifugal force is separated by the rotating motion caused by the tangential introduction of gas flow. Contaminant droplets are removed in the cyclone 4 and then passed to a demisting tank 5. The bottom of the cyclone 4 is provided with a concentrate discharge conduit C to remove the removed droplets.
The demister is arranged in the demisting tank 5 and mainly comprises a wire mesh, a wire mesh grid, a wire mesh block and a supporting device for fixing the wire mesh block, the wire mesh is used as a gas-liquid filter screen, and when gas with mist rises at a certain speed and passes through the wire mesh, the mist collides with the fine wires of the wire mesh due to the inertia effect of the rising mist, so that the mist is attached to the surfaces of the fine wires. Are gathered into liquid drops and fall separately. After passing through the mist eliminator, the gas is substantially free of mist. The mist elimination tank 5 is used for removing liquid mist entrained by gas. The bottom of the demister tank 5 is provided with a concentrate discharge pipe (not shown in the figure) for discharging the liquid mist.
An exhaust port of the demisting tank 5 is communicated with an oil-gas inlet of the oil-gas separator 6. The oil-gas separator 6 adopts a centrifugal separation structure to separate oil mist drops from gas, concentrated solution discharge pipelines are arranged at the bottom of the oil-gas separator 6, and separated oil flows out of the concentrated solution discharge pipeline at the bottom of the oil-gas separator 6 to be recovered.
An exhaust port of the oil-gas separator 6 is communicated with an air inlet of the condensation compression tank 7. The condensing and compressing tank 7 comprises a negative pressure system and a spray cooling system. The vacuum generating device in the negative pressure system pumps in the gas, and then the pumped gas is cooled by spraying through the spraying cooling system and then dissolved in the liquid filled in the tank of the condensing and compressing tank 7.
Typically, the demister tank 5 and the gas-oil separator 6 have completely removed the contaminant droplets and the water vapor enters the condensing and compressing tank 7.
The circulating water cooling machine 8 is a device which generates steam by utilizing heat exchange after water is in flow contact with gas, and the steam volatilizes to take away heat so as to reduce the temperature of circulating water. The liquid outlet of the condensation compression tank 7 is communicated with the liquid inlet of the circulating water cooling machine 8. The liquid outlet of the circulating water cooling machine 8 is communicated with the liquid recovery port of the condensation compression tank 7. The liquid discharged from the liquid outlet of the circulating water cooling machine 8 is used as the spray cooling water of the condensation compression tank 7.
The high-temperature water vapor is drawn into the condensation compression tank 7 by the negative pressure system, cooled by the cooling water in the condensation compression tank 7, dissolved in the liquid in the condensation compression tank 7, and then discharged from the liquid discharge port of the condensation compression tank 7. The circulating water-cooling machine 8 can be internally provided with a circulating water pump for pumping out the cooled water in a circulating manner, further cooling is carried out through heat exchange in the circulating process, and then the cooled water flows into the condensation and compression tank 7 again through a liquid outlet of the circulating water-cooling machine 8 and is used as spraying cooling water of the condensation and compression tank 7. The excess cooling water flowing into the circulating water cooler 8 can be discharged through a pipe alone.
The spraying device 2, the vacuum pump 3, the cyclone separator 4, the demisting tank 5, the oil-gas separator 6, the condensation compression tank 7, the circulating water cooling machine 8 and the like which are involved in the invention are all common treatment devices in the field, and technicians in the field can easily purchase and obtain the spraying device through open channels on the market, and the involved principles are also basic principles which can be well known by technicians in the field.
The above description is for the purpose of explanation and not limitation of the invention, which is defined in the claims, and any modifications may be made without departing from the basic structure of the invention.
Claims (6)
1. The utility model provides a vacuum low temperature spraying evaporation condensing system which characterized in that: comprises a spray tank (1), a cyclone separator (4), a demisting tank (5), an oil-gas separator (6), a condensation compression tank (7) and a circulating water cooling machine (8); the top of the spraying tank (1) is provided with a spraying device (2); an air outlet is formed in the side part of the spraying tank (1); an exhaust port of the spray tank (1) is communicated with an air suction port of the vacuum pump (3); the gas outlet of the vacuum pump (3) is communicated with the dust-containing gas inlet of the cyclone separator (4); a filtered gas outlet of the cyclone separator (4) is communicated with a gas inlet of the demisting tank (5); an exhaust port of the demisting tank (5) is communicated with an oil-gas inlet of the oil-gas separator (6); an exhaust port of the oil-gas separator (6) is communicated with an air inlet of the condensation compression tank (7); the liquid outlet of the condensation compression tank (7) is communicated with the liquid inlet of the circulating water cooling machine (8); and the liquid outlet of the circulating water cooling machine (8) is communicated with the liquid recovery port of the condensation compression tank (7).
2. The vacuum cryogenic spray evaporative condensation system of claim 1, wherein: and a concentrated solution discharge pipeline is arranged at the lower part of the spraying tank (1).
3. The vacuum cryogenic spray evaporative condensation system of claim 1, wherein: a valve is arranged at the water inlet of the spray tank (1); the liquid outlet of the spraying device (2) is arranged in the water inlet of the spraying tank (1).
4. The vacuum cryogenic spray evaporative condensation system of claim 1, wherein: the motor of the vacuum pump (3) is controlled by a frequency converter and is used for adjusting the vacuum degree in the spray can (1).
5. The vacuum cryogenic spray evaporative condensation system of claim 1, wherein: and concentrated solution discharge pipelines are arranged at the bottoms of the cyclone separator (4), the demisting tank (5) and the oil-gas separator (6).
6. The vacuum cryogenic spray evaporative condensation system of claim 1, wherein: and a circulating water pump is arranged in the circulating water cooling machine (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921588869.7U CN210645164U (en) | 2019-09-23 | 2019-09-23 | Vacuum low-temperature spray evaporation condensation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921588869.7U CN210645164U (en) | 2019-09-23 | 2019-09-23 | Vacuum low-temperature spray evaporation condensation system |
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| Publication Number | Publication Date |
|---|---|
| CN210645164U true CN210645164U (en) | 2020-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921588869.7U Active CN210645164U (en) | 2019-09-23 | 2019-09-23 | Vacuum low-temperature spray evaporation condensation system |
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| CN (1) | CN210645164U (en) |
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2019
- 2019-09-23 CN CN201921588869.7U patent/CN210645164U/en active Active
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Effective date of registration: 20201119 Address after: 214000 No. 152 Pier Road, Wuxi, Jiangsu 3496 Patentee after: WUXI APT EQUIPMENT TECHNOLOGY Co.,Ltd. Address before: 214000 No. 35 Changjiang Road, new Wu District, Wuxi, Jiangsu Patentee before: Wuxi Lombardy Technology Co.,Ltd. |