CN105692742B - Horizontal tube falling film evaporation high-salt wastewater depth enrichment facility - Google Patents
Horizontal tube falling film evaporation high-salt wastewater depth enrichment facility Download PDFInfo
- Publication number
- CN105692742B CN105692742B CN201610120012.7A CN201610120012A CN105692742B CN 105692742 B CN105692742 B CN 105692742B CN 201610120012 A CN201610120012 A CN 201610120012A CN 105692742 B CN105692742 B CN 105692742B
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- Prior art keywords
- falling film
- steam
- horizontal tube
- film evaporation
- tube falling
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Classifications
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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
- C02F1/08—Thin film evaporation
-
- 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
- C02F1/041—Treatment of water, waste water, or sewage by heating by distillation or evaporation by means of vapour compression
-
- 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
- C02F1/046—Treatment of water, waste water, or sewage by heating by distillation or evaporation under vacuum produced by a barometric column
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
Abstract
The present invention relates to a kind of horizontal tube falling film evaporation high-salt wastewater depth enrichment facilities, including horizontal tube falling film evaporation inspissator, the horizontal tube falling film evaporation inspissator has horizontally disposed heat exchanger tube, preheater is set on the feeding pipe of horizontal tube falling film evaporation inspissator, discharge nozzle road setting discharging pump, horizontal tube falling film evaporation inspissator concentrates pipeline configured with two sections of cycles, horizontal tube falling film evaporation inspissator is configured on steam-return line and steam-return line and is disposed with steam recycle compressor, steam-return line connect the heat exchanger tube for being switched to evaporation concentrator again with steam steam inlet pipe, horizontal tube falling film evaporation inspissator vacuum pump.The invention belongs to can low cost, efficiently, depth concentrate high-salt wastewater processing unit, using horizontal tube falling film condenser reduce integral device taken up space, convenient for build safeguard, save project initial stage put into and operating cost.
Description
Technical field
The invention belongs to high slat-containing wastewater concentration technical fields, and in particular to a kind of horizontal tube falling film evaporation depth
Enrichment facility.
Background technology
China is with the coal mine energy for main energy form.Coal chemical industry, coking of coal, power plant effluent belong to generally existing salt and contain
The very high industrial wastewater of amount, the direct emission of such waste water or not qualified discharge cause the ecological environment of the mankind irreversible
It destroys.
Currently, domestic mainly have vertical tube to rise film the concentration technology of high slat-containing wastewater, vertical tube falling and pressure follow
Three kinds of process routes of ring, it is low usually to there is heat transfer efficiency in three kinds of process equipments, high energy consumption, big common scarce of equipment initial stage input
Point, and this three classes equipment is both needed to occupy larger solid space, difficult in maintenance, safety is relatively low；There is also concentrations times for first two
Low, the big disadvantage of subsequent processing pressure of number；The energy consumption and input of latter are also all very big.
Invention content
It can be inexpensive, efficient, deep the technical problem to be solved by the present invention is to provide one kind for the above-mentioned prior art
The processing unit of degree concentration high-salt wastewater reduces integral device using horizontal tube falling film condenser and is taken up space, convenient for building
It safeguards, saves project initial stage input and operating cost.
Technical solution is used by the present invention solves the above problems：A kind of horizontal tube falling film evaporation high-salt wastewater depth
Enrichment facility, including horizontal tube falling film evaporation inspissator, the horizontal tube falling film evaporation inspissator have horizontally disposed
Heat exchanger tube, preheater is arranged on the feeding pipe of horizontal tube falling film evaporation inspissator, and setting discharging pump in discharge nozzle road is horizontal
Tube type falling-film evaporation concentrator concentrates pipeline configured with two sections of cycles, and horizontal tube falling film evaporation inspissator is configured with steam-return line
And steam recycle compressor is disposed on steam-return line, steam-return line connect with steam steam inlet pipe and is switched to evaporation concentrator again
Heat exchanger tube, horizontal tube falling film evaporation inspissator vacuum pump.
Preferably, it is set on the heating tube side connection horizontal tube falling film evaporation inspissator of the preheater and the heating tube side
Be equipped with condensate pump, realize by the indirect steam condensate formed in evaporation concentrator heat exchanger tube be passed through preheater to high-salt wastewater into
Row preheating.The indirect steam condensate generated in evaporation concentrator tube side can be used as high-quality distilled water through condensate pump discharge
Heat source preheats high-salt wastewater, improves energy utilization rate, reduces and is concentrated by evaporation cost.
Preferably, the bypass line with valve is set between the steam-return line and steam steam inlet pipe, is protected by by-passing valve
The steady of steam recycle start/stop of compressor is demonstrate,proved, and is contributed for slightly adjusting.Steam-return line by indirect steam grade increase from
And reused, energy consumption needed for system is reduced, the interior cycle of steam in heat exchanger tube tube side is realized.
It is more reasonably that two sections of cycles concentration tube road is respectively provided with circulating pump.
Horizontal tube falling film evaporation inspissator includes the cylinder of accumbency, and the end socket in cylinder one end is arranged, horizontally disposed
The heat exchanger tube is uniformly arranged up and down, and horizontal cloth liquid disk is provided with above heat exchanger tube, and corresponding various connect is provided on cylinder
Pipe.
Compared with prior art, the invention has the advantages that：
1, heating surface bank is horizontally arranged, reduces the mounting height of device, reduce primary construction cost, and run peace
Full property can also be improved.
2, material is flowed in membranaceous on the outside of the tube wall that conducts heat from up to down, and heating steam walks tube side, under in-tube condensation
And condensation latent heat is discharged, material is flowed from above to below along pipe outer wall, is formed a film naturally.Since flow is short, and through repeatedly redistributing,
Thin film drainage is uniform, and the thickness of film is small convenient for control, and heat transfer coefficient is effectively improved, to make the heat exchange gross area effectively drop
It is low；The reduction of the gross area and the reduction of film thickness can reduce the internal circulating load of brine again, to reduce power consumption.
3, using thin-walled heat exchanger tube, enhancing heat transfer reduces cost；Horizontally disposed tube bank intensity, rigidity requirement are low, to
Thin-walled heat exchanger tube may be used, reduce material consumption, while thin-walled can enhance heat transfer again.
4, optimization cloth liquid mode makes salt content be increased to close to saturation using multi-stage evaporation, and reduces operation and investment
Cost；Circulating brine uses two segment type formulas, the concentrate after one section of evaporation to be evaporated into two sections.Due to the boiling of one section of material
Point increases the elevation of boiling point less than two sections, so that one section of effective temperature difference is improved, to reduce heat exchange area；It is average
The raising of effective temperature difference can reduce the load of steam recycle compressor simultaneously, to reduce equipment power consumption.
Meanwhile gathering the operating feature of horizontal tube bundle so that evenly, mobility is more preferable for cloth liquid, in addition rational control
Flow, so as to the state by brine concentration to close saturation.
5, using steam recompression technology, system energy consumption is reduced, it will be using itself after mechanical compressor improves temperature
The indirect steam generated is evaporated as the main heat source being concentrated by evaporation, and is realized recycling for steam, is effectively reduced system
Overall heat consumption.
Description of the drawings
Fig. 1 is the structural schematic diagram of horizontal tube falling film evaporation high-salt wastewater depth enrichment facility in the embodiment of the present invention；
Fig. 2 is the longitudinally cutting structural schematic diagram of horizontal tube falling film evaporation inspissator in the embodiment of the present invention；
Fig. 3 is the transverse cross sectional structural schematic diagram of horizontal tube falling film evaporation inspissator in the embodiment of the present invention.
14 steam recycle compressor of horizontal tube falling film evaporation inspissator 2 material water pump, 3 preheater, 5 condensate pump
67 one sections of discharging pump, 8 two sections of water circulating pump, 9 vacuum pumps of water circulating pump
The circulation fluid outlet 1.7 of 1.6 1 sections of 1.1 cylinder, 1.2 end socket, 1.3 1.4 tube sheet of cloth liquid disk, 1.5 steam inlet
Two sections of circulation fluids export 1.8 condensates and export 1.9 1 sections of A, 1.10 2 sections of circulation fluid entrance, 1.11 condensates of circulation fluid entrance
Export 1.12 heat-transfer pipes of B.
Specific implementation mode
In order to make technical scheme of the present invention and advantage be more clear, the present embodiment combination condensate heat reclamation device and steam
Recycle compressor realizes the recycling of haline water concentration and high-quality brine.Compared with traditional evaporation concentration equipment, reduce
The height of system and device, maintenance easy to operation, cost of investment reduce by 50% or more, and energy consumption reduces 60% or more, system operation
It is controllable and more stable.
High-salt wastewater main component is sodium chloride, sodium sulphate etc., using saturation or superheated steam as heat source in embodiment.With
Under will the present invention is described in further detail in conjunction with attached drawing.High-salt wastewater depth enrichment facility includes that horizontal tube falling liquid film steams
Inspissator 1 is sent out, preheater 3, the feed pipe before preheater 3 are set on the feeding pipe of horizontal tube falling film evaporation inspissator 1
Road is provided with material water pump 2 for high-salt wastewater to be pumped into preheater 3, and discharge nozzle road setting discharging pump 6 is close for discharging
The cycle concentration tube that independent loops pump 7,8 is respectively configured configured with two sections in the brine of saturation, horizontal tube falling film evaporation inspissator 1
Road, horizontal tube falling film evaporation inspissator 1 are configured on steam-return line and steam-return line and are disposed with steam recycle compressor 4,
Bypass line with valve is set between steam-return line and steam steam inlet pipe, steam recycle compressor 4 is ensured by by-passing valve
Start and stop it is steady, and for slightly adjust contribute.Steam-return line connect the pipe for being switched to evaporation concentrator 1 again with steam steam inlet pipe
Journey, horizontal tube falling film evaporation inspissator 1 also configure vacuum pump 9 for will be arranged outside fixed gas.
The heating tube side of above-mentioned preheater 3 is connected with horizontal tube falling film evaporation inspissator 1, evaporation concentrator tube side
The high-quality indirect steam condensate of interior generation is passed through preheater by condensate pump 5, the preheating heating source as material.
Specifically, horizontal tube falling film evaporation inspissator includes the cylinder 1.1 of accumbency, and 1.1 one end of cylinder is provided with end socket
1.2, it is provided with one section of circulation fluid on cylinder 1.1 exports 1.6, two sections of circulation fluids and export 1.7, one sections of 1.9, two sections of circulation fluid entrances
Circulation fluid entrance 1.10, steam inlet 1.5, condensate outlet A1.8, condensate export B1.11, and 1.1 inside of cylinder is provided with tube sheet
1.4, about 1.12 horizontally disposed heat exchanger tube is uniformly arranged, and the top of heat exchanger tube 1.12 is provided with horizontal cloth liquid disk 1.3, material
After cloth liquid disk cloth liquid from top to bottom uniformly under ooze, into the shell side of inspissator.
Material is squeezed by material water pump 2 in one section of vaporization chamber, and the indirect steam condensate of material preheater 3 and high temperature is passed through
Heat exchange, preliminary preheating material is up to 50 DEG C or more.Brine material after preheating enters in horizontal tube falling film evaporation inspissator 1, and
Enter after being mixed with the material of one section of cycle concentration pipeline under the 1.3 uniform cloth liquid of horizontal cloth liquid disk on cylinder top and ooze, into water
Flat 1 shell side of tube type falling-film evaporation concentrator, material drips under forming relatively thin liquid film in heat exchange pipe outer wall, during which and in tube side
Saturated vapor heat exchange evaporation.Material overflow after concentration enters in dual circulation room, and the material of pipeline is concentrated with two sections of cycles
Dual circulation concentration is carried out after mixing.One section of water circulating pump 7 carries out initial concentration cycle to dilute material, and two sections of water circulating pumps 8 exist
To having improved brine recycling or the discharging of concentration under stable conditions.It is preferred that needing addition flow monitoring on circulating pump 7,8 pipelines
Device monitors circular flow and adjusts.Material concentration is related to evaporation capacity in system, adjusts feed rate, discharging flow or steam
The frequency of recycle compressor 4 can be realized to material concentration stability contorting.Indirect steam condensate is as high-quality distilled water through solidifying
Bear water heat source of 5 discharge of pump as preheater 3.Material after final concentration gets system by strong brine discharging pump 6, so far
Matter Transfer in completion system and evaporation and concentration.
Heat steam（105 DEG C of saturated vapor, corresponding saturation pressure are about 120kpa）, into horizontal tube falling film evaporation
1 tube side of inspissator, exchanges heat with the material of shell side, the indirect steam that shell side evaporation generates（About 90 DEG C, 91kpa）Return to steam
The saturated vapor that 4 repressurization of recycle compressor is warming up to 105 DEG C continues to use as heating steam circulation.Between steam-return line
Bypass line is set, the steady of 4 start and stop of steam recycle compressor is ensured by by-passing valve, and contribute for slightly adjusting.It should
System makes indirect steam grade be promoted to be reused by compressor, reduces energy consumption needed for system.So far it completes
The interior cycle of steam.
The final Waste water concentrating of the present embodiment is to sodium chloride-containing 25.5%, and in the case where internal circulating load controls and stablizes, cloth liquid is equal
Even, liquid film is in the form of a column or the distribution of continuous drop-wise, and flowing is uniformly and flow velocity is normal, and no viscosity obviously increases situation, in operational process
Tube wall always show metallic luster, has no the appearance of dirty spot or salting stain, shows that horizontal pipe falling film evaporation device disclosure satisfy that brine
The demand of high power concentration.
In this embodiment, brine recycling multiplying power is only three times of inlet amount, is far below the cycle of tens times of vertical tube falling
Multiplying power, and since mounting height is lower, the lift of circulating pump is lower, circulating pump power consumption is only 1/10th of vertical tube falling, comprehensive
Close the total energy consumption of other electrical equipments, 60% or more horizontal tube falling film system using electricity wisely.Show horizontal tube falling film system for salt
Water has significant energy-saving effect when concentrating.
In this embodiment, actual measurement overall heat-transfer coefficient is more than 3200w/m2DEG C, and in vertical tube falling device, this numerical value
Only 2000 or so, along with using thin-wall tube, tube bank total weight to be substantially reduced, horizontal tube falling film device can save on material
Save 50% or more cost.
Claims (3)
1. a kind of horizontal tube falling film evaporation high-salt wastewater depth enrichment facility, it is characterised in that：It is steamed including horizontal tube falling liquid film
Inspissator is sent out, the horizontal tube falling film evaporation inspissator has horizontally disposed heat exchanger tube, horizontal tube falling film evaporation concentration
Preheater, discharge nozzle road setting discharging pump are set on the feeding pipe of device, and horizontal tube falling film evaporation inspissator is configured with two
Duan Xunhuan concentrates pipeline, and two sections of cycles concentration tube road is respectively provided with circulating pump；Horizontal tube falling film evaporation inspissator is matched
It is equipped on steam-return line and steam-return line and is disposed with steam recycle compressor, steam-return line connect with steam steam inlet pipe and connects again
To the heat exchanger tube of evaporation concentrator, horizontal tube falling film evaporation inspissator vacuum pump, the horizontal tube falling film evaporation is dense
Contracting device includes the cylinder of accumbency, and cylinder one end is provided with end socket, and one section of circulation fluid outlet, two sections of circulation fluids are provided on cylinder and are gone out
Mouth, one section of circulation fluid entrance, two sections of circulation fluid entrances, steam inlet, condensate outlet A, condensate export B, are provided on the inside of cylinder
Tube sheet, horizontally disposed heat exchanger tube are uniformly arranged up and down, horizontal cloth liquid disk are provided with above heat exchanger tube, material is through cloth liquid disk cloth
After liquid from top to bottom uniformly under ooze, into the shell side of inspissator.
2. horizontal tube falling film evaporation high-salt wastewater depth enrichment facility according to claim 1, it is characterised in that：It is described
The heating tube side of preheater is connected on horizontal tube falling film evaporation inspissator and the heating tube side and is provided with condensate pump, realizes
The indirect steam condensate formed in evaporation concentrator heat exchanger tube is passed through preheater as the heat source preheated to high-salt wastewater.
3. horizontal tube falling film evaporation high-salt wastewater depth enrichment facility according to claim 1, it is characterised in that：It is described
Bypass line with valve is set between steam-return line and steam steam inlet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610120012.7A CN105692742B (en) | 2016-03-03 | 2016-03-03 | Horizontal tube falling film evaporation high-salt wastewater depth enrichment facility |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610120012.7A CN105692742B (en) | 2016-03-03 | 2016-03-03 | Horizontal tube falling film evaporation high-salt wastewater depth enrichment facility |
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| CN105692742A CN105692742A (en) | 2016-06-22 |
| CN105692742B true CN105692742B (en) | 2018-10-26 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108635900A (en) * | 2018-05-26 | 2018-10-12 | 江苏源拓环境科技有限公司 | A kind of compact micro-pressure-difference push in circulating and evaporating concentration and crystallization apparatus |
| CN110590040B (en) * | 2019-09-30 | 2023-08-25 | 江苏源拓环境科技有限公司 | Wastewater treatment method and wastewater treatment system |
| CN114392576A (en) * | 2021-12-25 | 2022-04-26 | 江苏源拓环境科技有限公司 | Horizontal pipe falling film type rectifying device |
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| CN101497465A (en) * | 2008-02-02 | 2009-08-05 | 上海达源环境科技工程有限公司 | Process for evaporating high-concentration sewage |
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| CN204173941U (en) * | 2014-10-29 | 2015-02-25 | 宝鸡忠诚制药机械有限责任公司 | Horizontal tube falling film thermocompression distiller |
| CN104529743A (en) * | 2014-12-09 | 2015-04-22 | 双良节能系统股份有限公司 | Continuous sodium acetate evaporation crystallization system and continuous sodium acetate evaporation crystallization method |
| CN204607621U (en) * | 2015-03-13 | 2015-09-02 | 沈阳航空航天大学 | Tidal energy sun power and mechanical steam recompression sea water desaltination system ensemble structure |
| CN205398149U (en) * | 2016-03-03 | 2016-07-27 | 双良节能系统股份有限公司 | High salt waste water degree of depth enrichment facility of horizontal tubular falling film evaporation |
-
2016
- 2016-03-03 CN CN201610120012.7A patent/CN105692742B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101497465A (en) * | 2008-02-02 | 2009-08-05 | 上海达源环境科技工程有限公司 | Process for evaporating high-concentration sewage |
| CN203959862U (en) * | 2014-06-16 | 2014-11-26 | 溧阳德维透平机械有限公司 | A kind of MVR evaporation concentration equipment for high-salt wastewater treatment industry |
| CN204173941U (en) * | 2014-10-29 | 2015-02-25 | 宝鸡忠诚制药机械有限责任公司 | Horizontal tube falling film thermocompression distiller |
| CN104529743A (en) * | 2014-12-09 | 2015-04-22 | 双良节能系统股份有限公司 | Continuous sodium acetate evaporation crystallization system and continuous sodium acetate evaporation crystallization method |
| CN204607621U (en) * | 2015-03-13 | 2015-09-02 | 沈阳航空航天大学 | Tidal energy sun power and mechanical steam recompression sea water desaltination system ensemble structure |
| CN205398149U (en) * | 2016-03-03 | 2016-07-27 | 双良节能系统股份有限公司 | High salt waste water degree of depth enrichment facility of horizontal tubular falling film evaporation |
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