CN100341792C - Polymer material small-sized humidifying-dehumidifying desalination apparatus and manufacturing method - Google Patents
Polymer material small-sized humidifying-dehumidifying desalination apparatus and manufacturing method Download PDFInfo
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- CN100341792C CN100341792C CNB2006100137264A CN200610013726A CN100341792C CN 100341792 C CN100341792 C CN 100341792C CN B2006100137264 A CNB2006100137264 A CN B2006100137264A CN 200610013726 A CN200610013726 A CN 200610013726A CN 100341792 C CN100341792 C CN 100341792C
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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- Y02A20/124—Water desalination
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Abstract
The present invention discloses a polymer material small-sized humidifying-dehumidifying desalination apparatus and a manufacturing method. The present invention belongs to the technology for desalting sea water or brackish water. The humidifying-dehumidifying apparatus comprises a heat exchanger and a gas-liquid separator, wherein the heat exchanger comprises a shell body, an upper pipe box and a lower pipe box. Pipe plates are connected between the shell body and the pipe boxes. A heat conduction pipe bundle is penetrated between the two pipe plates, and a baffle plate is arranged between the two pipe plates. A communicating pipe and an auxiliary heating port are arranged between the upper pipe box and the shell body. Filling material is filled in the lower pipe box. The lower part of the shell body is provided with an opening connected with the gas-liquid separator. A heat conduction pipe is manufactured in a fusion mode, the inner wall of the heat conduction pipe is provided with textures and a hydrophilic layer, the heat conduction pipe is connected with one pipe plate, the baffle plate is arranged into the shell body, the other pipe plate and the upper and the lower pipe boxes are arranged, the communicating pipe and the gas-liquid separator are arranged, and the apparatus of the present invention is manufactured. The apparatus is made of polymer material. The present invention is suitable for the characteristic of a humidifying-dehumidifying process and has the characteristics of corrosion resistance, low manufacture cost, wide applicability, etc.
Description
Technical field
The present invention relates to a kind of polymer material small-sized humidifying-dehumidifying desalination apparatus and manufacture method, belong to seawater or technique of desalinating saline water.
Background technology
Humidifying-dehumidifying is a kind of technology of being based on small-scale seawater or brackish water desalination, and its device is divided into humidification and two unit that dry, and is coupling in the same adiabatic space with a heat transfer element.The principle of humidifying-dehumidifying is based on the characteristic that carrier gas can be carried large quantity of moisture, salt solution forms falling liquid film in the humidification side, vaporization and wetting carrier gas, then the carrier gas introducing of humidification is dried the unit condensation and made fresh water, condensation latent heat then is delivered to the humidification unit by heat transfer element and is directly used in heating and vaporization salt solution.
Because humidification is the falling film evaporation process, dry to containing the vapor condensation process of high score rate non-condensable gas, so the heat transfer element both sides should be the surface of different hydrophilic/hydrophobic property.And the simplification of existing heat transfer element surface property does not possess the function of enhancing mass and heat transfer, and thermo-efficiency is low, has limited the universality of its application.
Miniaturization even microminiaturization are the developing direction that the humidifying-dehumidifying technology is emphasized all the time.Because specific surface area is very big, small-sized, miniature chemical industry equipment has efficiently, the advantage of highly integrated, easy to control, easy amplification.But existing humidifying-dehumidifying desalting plant mainly adopts the metallic substance manufacturing to form, and perhaps complex structure is difficult to miniaturization, and manufacturing cost is higher.
Summary of the invention
The object of the present invention is to provide a kind of polymer material small-sized humidifying-dehumidifying desalination apparatus and manufacture method, corrosion-resistant, the low cost of manufacture of described polymer material small-sized humidifying-dehumidifying desalination apparatus has characteristics such as widespread use.
The present invention is realized by following technical scheme.
A kind of polymer material small-sized humidifying-dehumidifying desalination apparatus, this device comprises a vertical shell-and-tube heat exchanger and gas-liquid separator, it is characterized in that: interchanger comprises a polypropylene casing 1, polypropylene upper tube box 4 and polypropylene lower tube box 14 are set at the two ends of housing 1, respectively at housing 1 and upper tube box 4, be connected polypropylene tube sheet 2 between housing 1 and the lower tube box 14, the cross-under mean inside diameter is 2～10mm between two tube sheets, average wall thickness is 10～200 μ m, inwall is shaped on texture and has a branch of polypropylene heat-transfer pipe 7 of hydrophilic layer, and the polypropylene segmental baffle 8 of penetrated section heat-transfer pipe is set between two tube sheets; Be provided with polypropylene communicating pipe 5 on upper tube box 4 tops and housing 1 top, have boosting mouth 6 on communicating pipe 5; Lower tube box 14 is filled with polypropylene random packing 11; Housing 1 bottom is provided with residual air and water outlet 9 near terminal position, and is connected with polypropylene gas-liquid separator 10.
The internal diameter of above-mentioned housing 1 is 40mm～1000mm, highly is 500mm～2000mm.
Above-mentioned heat-transfer pipe 7 compositions are the blend of the polyphenylene oxide of 70～95% polypropylene and 5～30%, or the blend of the graphite of 70～95% polypropylene and 5～30%, or 70～95% polypropylene and mass fraction are 5～30% the polyphenylene oxide and the blend of graphite mixture altogether.
Above-mentioned polypropylene random packing 11 is Raschig ring or Pall ring.
The manufacture method of above-mentioned polymer material small-sized humidifying-dehumidifying desalination apparatus is characterized in that comprising following process:
A) prepare burden with the mixing quality ratio of graphite by above-mentioned polypropylene, polyphenylene oxide, raw material is after fusion, employing is made up of two donuts with certain interval and interior ring surface is arranged veined spinning nozzle, and melting charge is extruded, stretched to be formed inwall and be shaped on texture, the slick heat-transfer pipe 7 of outer wall;
B) heat-transfer pipe 7 that step a) is made carries out hydrophilicity-imparting treatment, and described hydrophilicity-imparting treatment is to be that the ozone gas of 3～30mg/L feeds in the heat-transfer pipe 7 with concentration, and the treatment time is 10～120 minutes; Be treatment solution by 99: 1～90: 10 quality than mixed preparing perhaps, this treatment solution fed in heat-transfer pipe 7 that placing temperature is that the treatment time is 10～120 minutes in 40～70 ℃ the thermostat container with 80～98% sulphuric acid soln and potassium bichromate;
C) will offer a tube sheet 2 and the used traverse baffle 8 of pore, it is superimposed to press the mode that pore overlaps, and heat-transfer pipe 7 is penetrated each pore respectively;
D) adopt the sealing of auxiliary tube sealing means, fixedly heat-transfer pipe 7 and tube sheet 2, described auxiliary tube sealing means is at heat-transfer pipe 7 and tube sheet 2 coupling ends, polypropylene auxiliary tube 16 is embedded heat-transfer pipe 7, then auxiliary tube 16, heat-transfer pipe 7 and tube sheet 2 are carried out the heat expansion welding;
E) adopt polypropylene spacing bar 15 to determine the position of each traverse baffle 8, spacing bar 15 adopts hot weld mode and traverse baffle 8 to fix;
F) member of step c), step d) and step e) being made that contains heating surface bank 7, traverse baffle 8 and spacing bar 15 housing 1 of packing into is installed another piece tube sheet 2 at the other end of housing 1, the same step d) of installation process;
G) two tube sheets 2 are fixing with housing 1 welding, adopt the flange mode to be connected then with upper tube box 4 in housing 1 upper end; The lower end of housing 1 after the filled polypropylene random packing 11, adopts the flange mode to be connected with lower tube box 14 housing 1 in lower tube box 14 earlier again;
H) employing hot weld mode is fixedly connected on the communicating pipe 5 between upper tube box 4 tops and housing 1 top;
I) adopt the hot weld mode that residual air is connected with gas-liquid separator 10 with water outlet 9.
The present invention has all adopted the macromolecular material making, the advantage that possesses protection against corrosion, good antiscale property, acid and alkali-resistance, heat-transfer pipe has the thin-walled characteristics, rough inner surface is hydrophilic, help feed brine and form liquid film, smooth outer surface is hydrophobic, can promote water vapour drop-wise condensation and enhancement of heat transfer effectively, intensive tubule is directly restrained the allocation of space that can improve salt solution and carrier gas effectively, makes heat transfer wall can access most effectively and utilizes.Actual performance of the present invention is identical with the performance of metal device, is with a wide range of applications.
Description of drawings
Fig. 1 is apparatus of the present invention structural representations.
Among the figure:
The 1-housing; The 2-tube sheet; 3-salt water inlet; The 4-upper tube box; 5-communicating pipe; 6-boosting mouth; The 7-heat-transfer pipe; The 8-traverse baffle; 9-residual air and water outlet; The 10-gas-liquid separator; The 11-filler; The outlet of 12-strong brine; The 13-carrier gas inlet; The 14-lower tube box; 15-spacing bar.
The structural representation that Fig. 2 adopts auxiliary tube to be tightly connected for tube sheet 2 and heat-transfer pipe 7.
Among the figure:
The 16-auxiliary tube.
Embodiment
In conjunction with the accompanying drawings the present invention is further specified:
With 90% polypropylene, 5% polyphenylene oxide and 5% graphite mix, after fusion, employing is made up of two donuts with gap and interior ring surface is arranged veined spinning nozzle, melting charge extruded, stretches form inwall and be furnished with texture, the slick heat-transfer pipe 7 of outer wall, heat-transfer pipe 7 mean inside diameter 3.5mm, wall thickness 30 μ m.With concentration is that the treatment time is 30 minutes in the ozone gas feeding heat-transfer pipe 7 of 15mg/L.Heat-transfer pipe 7 interior sidewall surface after the processing possess certain wetting ability and roughness, outer side surface then is hydrophobic smooth surface, help promoting salt solution to form liquid film like this, and the steam that contains high score rate non-condensable gas produce drop-wise condensation and enhancement of heat transfer at outer wall at the heat-transfer pipe inwall.
The mode of arranging by equilateral triangle on the polypropylene tube sheet 2 of 2 thick 8mm, external diameter 70mm gets out the pore of 43 internal diameter 4.0mm, pore width between centers is 5.0mm, gets out in tube sheet 2 outer rims to be used for the bolt hole that tube sheet 2 and upper tube box 4 flanges and tube sheet 2 are connected with lower tube box 14 flanges.
The mode of arranging by equilateral triangle on the polypropylene circular slab of 18 thick 1mm, external diameter 39mm gets out the pore of 43 internal diameter 4.0mm, pore width between centers is 5.0mm, and this external circular slab outer rim gets out the pore of 6 internal diameter 2.5mm evenly distributedly as spacing bar hole.It is 25% breach that the polypropylene circular slab is clipped area, as segmental baffle 8.
With a tube sheet 2 and 18 used traverse baffles 8, the mode of pressing the pore coincidence is superimposed, 43 root polypropylene heat-transfer pipes 7 is penetrated the pore of each traverse baffle 8 and tube sheet 2 respectively.
At heat-transfer pipe 7 and tube sheet 2 coupling ends, polypropylene auxiliary tube 16 is embedded heat-transfer pipe 7, then auxiliary tube 16, heat-transfer pipe 7 and tube sheet 2 are carried out the heat expansion welding.The polypropylene spacing bar 15 that is 2mm with 6 external diameters penetrates the pore that is used as spacing bar hole, and the spacing of determining each traverse baffle 8 is 50mm.Adopt the hot weld mode to connect spacing bar 15 and traverse baffle 8.With the above-mentioned member that contains heat-transfer pipe 7 tube bank, traverse baffle 8 and spacing bar 15 housing 1 of packing into, housing 1 for internal diameter 40mm, high 1m, an end have internal diameter be 20mm communicating pipe 5 interface and the other end have the residual air that internal diameter is 20mm and the polypropylene tube of water outlet 9 interfaces.The other end at housing 1 adopts same auxiliary tube mode of connection that another piece tube sheet 2 is installed then.Tube sheet 2 adopts the flange mode to connect the high polypropylene upper tube box 4 of 0.35m that is at housing 1 one ends after fixing with housing 1 welding; The other end of housing 1 after the filled polypropylene Raschig ring random packing 11, is connected housing 1 in height is the lower tube box 14 of 0.35m earlier with bobbin carriage 14 employing flange modes.Employing hot weld mode is fixedly connected on the communicating pipe 5 between upper tube box 4 tops and housing 1 top.Adopt the hot weld mode that residual air is connected with polypropylene gas-liquid separator 10 with water outlet 9.
Adopt the desalination of said apparatus realization salt solution humidifying-dehumidifying to produce the process of fresh water: heat-transfer pipe is as heat transfer element, and the tube side of device is as the humidification unit, and shell side is as drying the unit.The salt solution of preheating is entered by salt water inlet 3, flows down along heat-transfer pipe 7 inwalls, and the not disconnecting tube wall opposite side that conducted heat passes the condensation latent heat come and vaporizes, and strong brine is flowed out by strong brine outlet 12 at last.Simultaneously with air as carrier gas, enter by carrier gas inlet 13, flow from bottom to top and by humidification at tube side.Beyond replenishing in right amount, boosting mouth 6 places of carrier gas behind the humidification on communicating pipe 5 add steam to improve the temperature of wet carrier gas, entering the shell side condensation again dries, last residual air and fresh water enter gas-liquid separator 10 by residual air and water outlet 9, carry out gas-liquid separation, obtain fresh water, residual air is introduced carrier gas inlet 13 recycles.Filler 11 is used for pre-humidification was carried out in carrier gas before entering heat-transfer pipe 7.
This polymer material small-sized humidifying-dehumidifying desalination apparatus is 0.0025kg m at salt solution falling liquid film load (unit length wetted perimeter, the brine quality that flows through in the unit time)
-1s
-1, 77 ℃ of salt solution inlet temperatures, carrier gas mass rate (on the unit actual internal area in tube side, pass through in the unit time dry carrier gas quality) be 0.57kg m
-2s
-1, the ratio that adds steam mass flow and carrier gas mass rate that uses is 0.016 o'clock, the fresh water yield on the unit heat transfer area is 0.32kgm
-2h
-1, identical with the water-yielding capacity of the humidifying-dehumidifying desalination apparatus of red copper heat-transfer pipe under the same terms.
Claims (5)
1. polymer material small-sized humidifying-dehumidifying desalination apparatus, this device comprises a vertical shell-and-tube heat exchanger and gas-liquid separator, it is characterized in that: interchanger comprises a polypropylene casing (1), polypropylene upper tube box (4) and polypropylene lower tube box (14) are set at the two ends of housing (1), respectively at housing (1) and upper tube box (4), be connected polypropylene tube sheet (2) between housing (1) and the lower tube box (14), the cross-under mean inside diameter is 2～10mm between two tube sheets, average wall thickness is 10～200 μ m, inwall is shaped on texture and has a branch of polypropylene heat-transfer pipe (7) of hydrophilic layer, and polypropylene segmental baffle (8) is set between two tube sheets; Be provided with polypropylene communicating pipe (5) on upper tube box (4) top and housing (1) top, have boosting mouth (6) on communicating pipe (5); Lower tube box (14) is filled with polypropylene random packing (11); Housing (1) bottom is provided with residual air and water outlet (9) near terminal position, and is connected with polypropylene gas-liquid separator (10).
2. polymer material small-sized humidifying-dehumidifying desalination apparatus according to claim 1 is characterized in that: the internal diameter of housing (1) is 40mm～1000mm, highly is 500mm～2000mm.
3. polymer material small-sized humidifying-dehumidifying desalination apparatus according to claim 1, it is characterized in that: heat-transfer pipe (7) composition is the blend of the polyphenylene oxide of 70～95% polypropylene and 5～30%, or the blend of the graphite of 70～95% polypropylene and 5～30%, or 70～95% polypropylene and mass fraction are 5～30% the polyphenylene oxide and the blend of graphite mixture altogether.
4. polymer material small-sized humidifying-dehumidifying desalination apparatus according to claim 1 is characterized in that: polypropylene random packing (11) is Raschig ring or Pall ring.
5. the manufacture method of a polymer material small-sized humidifying-dehumidifying desalination apparatus according to claim 1 is characterized in that comprising following process:
A) with 70～95% polypropylene and 5～30% polyphenylene oxide, or the graphite of 70～95% polypropylene and 5～30%, or 70～95% polypropylene and mass fraction are that 5～30% the polyphenylene oxide and the mixture of graphite carry out the blend batching altogether, after fusion, employing is made up of two donuts with certain interval and interior ring surface is arranged veined spinning nozzle, and melting charge is extruded, stretched to be formed inwall and be shaped on texture, the slick heat-transfer pipe of outer wall (7);
B) heat-transfer pipe (7) that step a) is made carries out hydrophilicity-imparting treatment, and described hydrophilicity-imparting treatment is to be that the ozone gas of 3～30mg/L feeds in the heat-transfer pipe (7) with concentration, and the treatment time is 10～120 minutes; Be treatment solution by 99: 1～90: 10 quality than mixed preparing perhaps, this treatment solution fed in heat-transfer pipe (7) that placing temperature is that the treatment time is 10～120 minutes in 40～70 ℃ the thermostat container with 80～98% sulphuric acid soln and potassium bichromate;
C) will offer a tube sheet (2) of pore and used traverse baffle (8), the mode of pressing the pore coincidence is superimposed, and heat-transfer pipe (7) is penetrated each pore respectively;
D) adopt the sealing of auxiliary tube sealing means, fixedly heat-transfer pipe (7) and tube sheet (2), described auxiliary tube sealing means is at heat-transfer pipe (7) and tube sheet (2) coupling end, polypropylene auxiliary tube (16) is embedded heat-transfer pipe (7), then auxiliary tube (16), heat-transfer pipe (7) and tube sheet (2) are carried out the heat expansion welding;
E) adopt polypropylene spacing bar (15) to determine the position of each traverse baffle (8), spacing bar (15) adopts hot weld mode and traverse baffle (8) to fix;
F) member of step c), step d) and step e) being made that contains heating surface bank (7), traverse baffle (8) and spacing bar (15) housing (1) of packing into is installed another piece tube sheet (2), the same step d) of installation process at the other end of housing (1);
G) two tube sheets (2) are fixing with housing (1) welding, adopt the flange mode to be connected in housing (1) upper end then with upper tube box (4); The lower end of housing (1) after the filled polypropylene random packing (11), adopts the flange mode to be connected housing (1) and lower tube box (14) in lower tube box (14) earlier again;
H) employing hot weld mode is fixedly connected on the communicating pipe (5) between upper tube box (4) top and housing (1) top;
I) adopt the hot weld mode that residual air is connected with gas-liquid separator (10) with water outlet (9).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100137264A CN100341792C (en) | 2006-05-17 | 2006-05-17 | Polymer material small-sized humidifying-dehumidifying desalination apparatus and manufacturing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2006100137264A CN100341792C (en) | 2006-05-17 | 2006-05-17 | Polymer material small-sized humidifying-dehumidifying desalination apparatus and manufacturing method |
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| CN1850634A CN1850634A (en) | 2006-10-25 |
| CN100341792C true CN100341792C (en) | 2007-10-10 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102410673A (en) * | 2012-01-04 | 2012-04-11 | 天津商业大学 | High-pressure working medium condenser/evaporator |
| CN116589008B (en) * | 2023-06-16 | 2024-04-26 | 上海海事大学 | Zero-brine solar seawater desalination device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2194903Y (en) * | 1994-07-02 | 1995-04-19 | 王燕华 | Cryogenic sea water desalting plant |
| CN2602061Y (en) * | 2003-03-04 | 2004-02-04 | 季静秋 | Apparatus for collecting fresh water from air |
| CN1583582A (en) * | 2004-05-28 | 2005-02-23 | 天津大学 | Desalting apparatus and process for seawater or brackish water by moistening-drying |
-
2006
- 2006-05-17 CN CNB2006100137264A patent/CN100341792C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2194903Y (en) * | 1994-07-02 | 1995-04-19 | 王燕华 | Cryogenic sea water desalting plant |
| CN2602061Y (en) * | 2003-03-04 | 2004-02-04 | 季静秋 | Apparatus for collecting fresh water from air |
| CN1583582A (en) * | 2004-05-28 | 2005-02-23 | 天津大学 | Desalting apparatus and process for seawater or brackish water by moistening-drying |
Non-Patent Citations (1)
| Title |
|---|
| 露点蒸发淡化技术 熊日华，王志，王世昌，水处理技术，第30卷第4期 2004 * |
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