CN103754968A - Method for manufacturing hot method sea water desalination device from entire aluminum hot-dip coated steel prepared by using two-bath process - Google Patents
Method for manufacturing hot method sea water desalination device from entire aluminum hot-dip coated steel prepared by using two-bath process Download PDFInfo
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- CN103754968A CN103754968A CN201410065034.9A CN201410065034A CN103754968A CN 103754968 A CN103754968 A CN 103754968A CN 201410065034 A CN201410065034 A CN 201410065034A CN 103754968 A CN103754968 A CN 103754968A
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- Y02A20/124—Water desalination
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Abstract
The invention relates to a method for manufacturing a hot method sea water desalination device from entire aluminum hot-dip coated steel prepared by using a two-bath process. The method is characterized in that steel subjected to immersion plating with a molten rare earth aluminum alloy is used for manufacturing the hot method sea water desalination device, particularly a low temperature multiple-effect sea water desalination device. The steel used for manufacturing the hot method sea water desalination device is subjected to hot-dip coating with the rare earth aluminum alloy, the rare earth aluminum alloy is prepared through the intermediate alloy of commercial-purity aluminium and Re-Rl, Re in the intermediate alloy refers to Ce or Ce-LPC contained misch metal, and the proportion of Re in the rare earth aluminum alloy reaches 0.2 wt percent to 0.3 wt percent. The steel subjected to hot-dip coating with rare earth aluminum alloy adopts the two-bath process and entire hot dipping. The method provided by the invention enables the manufacturing cost to be lowered greatly, improves the seawater corrosion resistance greatly, and has the characteristics of high intensity, metal conservation, reduced structural weight, increased heat transfer coefficient of an evaporator, so that the requirement for the heat transfer coefficient of a hot method sea water desalination evaporator can be met.
Description
Technical field
The present invention relates to the technology that the hot method sea water desalinating plant hot dip rare earth aluminium alloy steel such as low-temperature multi-effect are manufactured, a kind of particularly method of manufacturing hot method sea water desalinating plant with two-bath process overall thermal Aluminium Coated Steel.
Background technology
China's water resource of per capita whole world is ranked first 08, is one of 21 poor-water countries in the world.Tellurian water 96.5% is distributed in ocean, the overwhelming majority is the seawater of saliferous, deduction is unserviceable glacier and high mountain ice cap at present, and the water yield in inland salt alkali lake and inland sea, and the water yield in available freshwater lake, land and river is less than 1% of earth total Water.In a sense, seawater is inexhaustible, nexhaustible main water source.Therefore, development desalination technology, to ocean, wanting fresh water is to solve the most effective approach of Freshwater resources imbalance between supply and demand, sea water desaltination work has great economic worth and social value.At present domestic aspect sea water desaltination most widely used technology have two kinds: the one, the hot method take low temperature multiple-effect distillation as representative, the 2nd, reverse osmosis method, i.e. embrane method.These two kinds of methods cut both ways, and embrane method is invested lower than hot method with it, a power consumption, and without other thermal source, the world is keeping growth faster at home.The advantage of low-temperature multiple-effect distillation is, can effectively utilize waste heat on the one hand, comparatively simple to the requirement of sea water preprocessing on the other hand.And that reverse osmosis rule requires to enter in the seawater of reverse osmosis membrane various organic clearances is higher, to reduce the load of reverse osmosis membrane, increase the service life.In addition, the fresh water that the fresh water purity that low-temperature multiple-effect distillation is produced is produced far above embrane method, water quality reaches national bottled purified water for drinking standard.In prior art in equal production-scale situation, hot method investment is bigger than normal, major cause is that all parts and components of hot method equipment all need to adopt high-grade seawater corrosion resistance material to make, the expensive non-ferrous metal alloy materials such as such as titanium, 316L stainless steel, duplex stainless steel, cupronickel, aluminum brass, use hardly common iron, make facility investment far away higher than embrane method.Because investment is bigger than normal, cause depreciation and financial expense proportion excessive, cause the cost of hot method sea water desaltination higher than embrane method.How to find the material that a kind of price is comparatively cheap, this material can meet hot method sea water desaltination to heat conductivility, physical strength, processing characteristics, the particularly requirement of the index such as seawater corrosion resistance ability, substitute above-mentioned these expensive nonferrous materials and stainless steels, thereby effectively reduce the materials cost of the hot method sea water desalinating plants such as low temperature multiple-effect distillation, reduce equipment manufacturing cost, for promoting China's sea water desaltination cause, have great meaning.
Summary of the invention
The present invention has overcome the defect of above-mentioned existence, object is to fall low heat method sea water desalinating plant materials cost and fall low heat method sea water desaltination cost for solving, make the hot method sea water desalinating plant take low-temperature multi-effect as representative be able to widespread use, a kind of method of manufacturing hot method sea water desalinating plant with two-bath process overall thermal Aluminium Coated Steel is provided.
The present invention manufactures the method content Description of hot method sea water desalinating plant with two-bath process overall thermal Aluminium Coated Steel:
The present invention manufactures the method for hot method sea water desalinating plant with two-bath process overall thermal Aluminium Coated Steel, it is characterized in that: adopt the steel of immersion plating molten state rare earth aluminium alloy to manufacture particularly low-temperature multi-effect seawater desalination device of hot method sea water desalinating plant.
Manufacture the steel of hot method sea water desalinating plant through hot dip rare earth aluminium alloy, rare earth aluminium alloy adopts commercial-purity aluminium and the configuration of Re-Rl master alloy to form, in master alloy, Re composition is Ce or La or rich Ce-LPC mishmetal, adjust Re-Al master alloy amount, making Re proportion in rare earth aluminium alloy is 0.2wt%～0.3wt%.
Steel hot dip rare earth aluminium alloy adopts two-bath process, and steel, after pre-treatment, are introduced into the method for the molten flux submergence processing identical with molten state aluminum alloy melt temperature before hot dip.
Hot dip is the heat-transfer pipe of evaporator bundle entirety 14 Mo 2 hot dip rare earth aluminum alloy of steel member integrated hot dip process, particularly steel.
Hot method sea water desalinating plant is: the fresh-water generator of distillation desalination process is used in multi-effect distilling, multistage flash evaporation and the distillation of calming the anger.
The hot method sea water desalinating plant that two-bath process overall thermal Aluminium Coated Steel is manufactured, adopts the parts of hot dip rare earth aluminium alloy steel manufacture to be: heat-transfer pipe of evaporator, tube sheet, housing, salt solution and fresh water pipeline, salt water tank, fresh-water tank, condenser and support and dividing plate.
Iron and steel top layer metallographic structure after hot dip rare earth aluminium alloy, aluminized coating thickness ﹥ 140 μ m, plated surface aluminum layer thickness ﹥ 100 μ m.
Heat-transfer pipe of evaporator bundle welding process, heat-transfer pipe 4 is selected the Q235 thin-wall seamless pipe of external diameter φ 18mm, wall thickness 0.5mm, welding fabrication before heating surface bank immersion plating, its welding assembly method: the thick 25mm of tube sheet 5, boring φ 18+0.1mm, heat-transfer pipe 4 pores are equilateral triangle and distribute, and tube sheet 5 outer end of hole leave 45
o groove, heat-transfer pipe 4 mouths of pipe exceed tube sheet 2mm, adopt solid wire automatic welding.
Hot method sea water desalinating plant and method that two-bath process overall thermal Aluminium Coated Steel of the present invention is manufactured, have following beneficial effect:
1, adopting its price of common iron of hot dip rare earth aluminium alloy of the present invention technical finesse is only 5～8% of titanium material; Aluminum bronze, cupronickel material 15～20%, Stainless steel 316 L 25～30%.Use hot dip rare earth aluminium alloy steel to manufacture the hot method sea water desalinating plants such as low-temperature multi-effect, under equal production scale, manufacturing cost significantly declines, and is only 30% left and right that adopts the manufacturing cost of non-ferrous metal alloy material and high-grade stainless steel.
2, adopt the steel seawater corrosion resistance ability of hot dip rare earth aluminium alloy of the present invention to increase substantially, be better than common stainless steel, be not less than aluminum copper alloy material.In resistance to erosion, ant-scaling, antibiont corrosion aspect meet the requirement of hot method sea water desalinating plant to material property completely.
3, the steel of hot dip rare earth aluminium alloy, intensity is higher than aluminum bronze, cupronickel material, and therefore heat-transfer pipe of evaporator can adopt thin-walled tube, and wall thickness is reduced to below 0.5mm by 0.8mm.Not only save metal, alleviate structural weight, improve vaporizer heat transfer coefficient simultaneously, make it to reach the requirement of hot method fresh-water generator vaporizer heat transfer coefficient.
accompanying drawing explanation
Fig. 1 is that hot melt soaks rare earth aluminium alloy steel top layer metallographic structure figure;
Fig. 2 is vaporizer heat transmitter tube bank welding process and structural representation;
In figure: the 1st, the matrix, the 2nd of steel part, the aluminized coating, the 3rd that iron and aluminium alloy form, plated surface aluminium lamination, the 4th, heat-transfer pipe, the 5th, tube sheet.
Embodiment
The present invention is achieved in that and replaces or part replaces the materials such as titanium, non-ferrous metal alloy, stainless steel and manufactures particularly low-temperature multi-effect seawater desalination device of hot method with the steel of immersion plating molten state rare earth aluminium alloy by the method that two-bath process overall thermal Aluminium Coated Steel is manufactured hot method sea water desalinating plant.
Manufacture the steel of hot method sea water desalinating plant through hot dip rare earth aluminium alloy, rare earth aluminium alloy adopts commercial-purity aluminium and the configuration of Re-Rl master alloy to form, in master alloy, Re composition is Ce or La or rich Ce-LPC mishmetal, adjust Re-Al master alloy amount, make Re proportion in rare earth aluminium alloy reach 0.2wt%～0.3wt%.
Steel hot dip rare earth aluminium alloy adopt two-bath process, at steel after pre-treatment, before hot dip, be introduced into the method for the molten flux submergence processing identical with molten state aluminum alloy melt temperature.
Hot dip is the heat-transfer pipe of evaporator bundle entirety 14 Mo 2 hot dip rare earth aluminum alloy of steel member integrated hot dip process, particularly steel.
Hot method sea water desalinating plant is: the fresh-water generator of distillation desalination process is used in multi-effect distilling, multistage flash evaporation and the distillation of calming the anger.
In order to solve the problems of the technologies described above, the technical scheme that the hot method sea water desalinating plant of two-bath process overall thermal Aluminium Coated Steel of the present invention manufacture and method are achieved is: with the steel of hot dip rare earth aluminium alloy, replace or partly replace titanium, 316L stainless steel, duplex stainless steel, cupronickel, the non-ferrous metal alloy materials such as aluminum brass, manufacture the major parts of the hot method sea water desalinating plants such as low-temperature multi-effect, these parts comprise: heat-transfer pipe of evaporator, tube sheet, housing, salt solution and fresh water pipeline, salt water tank, fresh-water tank, condenser and support, dividing plate etc., do not comprise: mist eliminator, spray thrower, and various pumps, the parts such as valve.
The steel of hot dip rare earth aluminium alloy refer to and in molten state aluminium liquid, add appropriate rare earths material and other alloy raw material, carry out the steel of hot dip surface working.Plain carbon stool has kept the intensity of steel after hot dip rare earth aluminium alloy, has had the performance of the seawater corrosion resistance that surmounts simple hot dip (oozing) aluminium.After its reason is that certain rare earth adds, make aluminium film and alloy layer homogeneous microstructure, grain refining, plated film more continuous, complete.
Further improvement of the present invention is: hot dip rare earth aluminium alloy steel adopt " two-bath process " technique.Be steel after pre-treatment, enter and soak before aluminum pot, be introduced into the technique of submergence processing in the molten flux pot identical with melt temperature of aluminum liquid.The aluminium coated pin hole of steel of processing through " two-bath process " is eliminated completely, organizes finer and closely, significantly improves the anti-seawater corrosion ability of hot dip rare earth aluminium alloy steel.
Further improvement of the present invention is: by the assembled steel member of steel, as long as contour dimension allows entirety to pack into, soak aluminum pot, just can carry out overall hot dip.Particularly the tube bank of the heat transmitter in low-temperature multi-effect vaporizer is more suitable for overall hot dip.The superiority that heat transmitter is restrained overall hot dip is: the shortcoming that welding brings by rare earth aluminium alloy soldering, is thoroughly eliminated in tube sheet and heat-transfer pipe gap in hot dip process.Secondly, eliminated the shortcoming that distortion that heat-transfer pipe hot dip brings and processing characteristics decline.Again, because tube bank is welded into an integrated member, eliminate the vibration abrasion that may occur in using, be conducive to the Seawater durability of the core component-heat-transfer pipe of evaporator bundle that improves hot method sea water desalinating plant.
Below in conjunction with embodiment and accompanying drawing, the present invention is described in detail by the method that two-bath process overall thermal Aluminium Coated Steel is manufactured hot method sea water desalinating plant.
The present invention is not subject to the restriction of following embodiment, can determine concrete embodiment according to technical scheme of the present invention and practical situation.
Embodiment is 100t/d quadruple effect low-temperature multi-effect seawater desalination device, its heat-transfer pipe of evaporator, tube sheet, housing, salt solution and fresh water pipeline, salt water tank, fresh-water tank, condenser and support, dividing plate etc. all adopt Q235 and the machine-shaping of 20# steel, after rust cleaning waits pretreatment process to process, all carry out two-bath process hot dip rare earth aluminium alloy.Alloying constituent is: rich Ce-LPC mishmetal 0.3wt%, Mn1.1wt%, the rest is commercial-purity aluminium.Due to the effect of rare earth, the aluminized coating thickness that ferroaluminium forms is increased, improve the anti-oxidant and anti-seawater corrosion ability of coating.
See Fig. 1, iron and steel top layer metallographic structure after hot dip rare earth aluminium alloy, the 1st, the matrix of steel part, the 2nd, the aluminized coating that ferro-aluminium forms, the 3rd, plated surface aluminium lamination.The present embodiment aluminized coating thickness ﹥ 140 μ m, plated surface aluminum layer thickness ﹥ 100 μ m.Coupon test shows: the steel part seawater corrosion resistance ability that adopts the steel part of two-bath process hot dip rare earth aluminium alloy to aluminize than ordinary hot improves 2-3 doubly.
See Fig. 2, the core component of the present embodiment 100t/d quadruple effect low-temperature multi-effect seawater desalination device is heat-transfer pipe of evaporator bundle, and heat-transfer pipe 4 is selected the Q235 thin-wall seamless pipe of external diameter φ 18mm, wall thickness 0.5mm.Welding fabrication before heating surface bank immersion plating.Its welding assembly method: the thick 25mm of tube sheet 5, boring φ 18+0.1mm, heat-transfer pipe 4 pores are equilateral triangle and distribute, and tube sheet 5 outer end of hole leave 45
o groove, heat-transfer pipe 4 mouths of pipe exceed tube sheet 2mm, adopt solid wire automatic welding.After heat-transfer pipe of evaporator bundle welding fabrication, carry out overall two-bath process hot dip rare earth aluminium alloy processing.Due to immersion plating after the first moulding of tube bank, the whole solderings of weld seam, have improved resistance to air loss; Weld bond also soaks rare earth aluminium alloy simultaneously, makes weld bond also reach same anticorrosive intensity, thereby has guaranteed heating surface bank entirety anti-seawater corrosion ability.Entirety hot dip also has effect to control the deformation of heat-transfer pipe in hot dip process, has guaranteed the overall manufacturing accuracy of vaporizer.Experiment shows that the steel heating surface bank seawater corrosion resistance ability of overall hot dip rare earth aluminium alloy is not less than the heating surface bank by aluminium-copper tube or copper nickel pipe manufacturer.
The members such as the housing of 100t/d quadruple effect low-temperature evaporation method sea water desalinating plant, water tank soak aluminum pot diameter because contour dimension is greater than, cannot overall thermal immersion plating, can only adopt the way of segmentation hot dip aftershaping.The structural part such as housing, water tank adopts TIG or MIG welding, and welding wire is selected 1Cr18Ni9, and weld bond intensity and resistance to corrosion seawater reach requirement.
Claims (8)
1. a method of manufacturing hot method sea water desalinating plant with two-bath process overall thermal Aluminium Coated Steel, is characterized in that: adopt the steel of immersion plating molten state rare earth aluminium alloy to manufacture particularly low-temperature multi-effect seawater desalination device of hot method sea water desalinating plant.
2. the method for manufacturing hot method sea water desalinating plant with two-bath process overall thermal Aluminium Coated Steel according to claim 1, it is characterized in that: manufacture the steel of hot method sea water desalinating plant through hot dip rare earth aluminium alloy, rare earth aluminium alloy adopts commercial-purity aluminium and the configuration of Re-Rl master alloy to form, in master alloy, Re composition is Ce or La or rich Ce-LPC mishmetal, adjust Re-Al master alloy amount, making Re proportion in rare earth aluminium alloy is 0.2wt%～0.3wt%.
3. the method for manufacturing hot method sea water desalinating plant with two-bath process overall thermal Aluminium Coated Steel according to claim 1, it is characterized in that: steel hot dip rare earth aluminium alloy adopts two-bath process, be steel after pre-treatment, before hot dip, be introduced into the method for the molten flux submergence processing identical with molten state aluminum alloy melt temperature.
4. the method for manufacturing hot method sea water desalinating plant with two-bath process overall thermal Aluminium Coated Steel according to claim 1, is characterized in that: hot dip is the heat-transfer pipe of evaporator bundle entirety 14 Mo 2 hot dip rare earth aluminum alloy of steel member integrated hot dip process, particularly steel.
5. the method for manufacturing hot method sea water desalinating plant with two-bath process overall thermal Aluminium Coated Steel according to claim 1, is characterized in that: hot method sea water desalinating plant is: the fresh-water generator of distillation desalination process is used in multi-effect distilling, multistage flash evaporation and the distillation of calming the anger.
6. the method for manufacturing hot method sea water desalinating plant with two-bath process overall thermal Aluminium Coated Steel according to claim 1, it is characterized in that: the hot method sea water desalinating plant that two-bath process overall thermal Aluminium Coated Steel is manufactured, adopts the parts of hot dip rare earth aluminium alloy steel manufacture to be: heat-transfer pipe of evaporator, tube sheet, housing, salt solution and fresh water pipeline, salt water tank, fresh-water tank, condenser and support and dividing plate.
7. the method for manufacturing hot method sea water desalinating plant with two-bath process overall thermal Aluminium Coated Steel according to claim 1, is characterized in that: iron and steel top layer metallographic structure after hot dip rare earth aluminium alloy, aluminized coating thickness ﹥ 140 μ m, plated surface aluminum layer thickness ﹥ 100 μ m.
8. the method for manufacturing hot method sea water desalinating plant with two-bath process overall thermal Aluminium Coated Steel according to claim 1, it is characterized in that: heat-transfer pipe of evaporator bundle welding process, heat-transfer pipe (4) is selected the Q235 thin-wall seamless pipe of external diameter φ 18mm, wall thickness 0.5mm, welding fabrication before heating surface bank immersion plating, its welding assembly method: the thick 25mm of tube sheet (5), boring φ 18+0.1mm, heat-transfer pipe (4) pore is equilateral triangle and distributes, and tube sheet (5) outer end of hole leaves 45
o groove, heat-transfer pipe (4) mouth of pipe exceeds tube sheet 2mm, adopts solid wire automatic welding.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111979390A (en) * | 2020-07-02 | 2020-11-24 | 中国船舶重工集团公司第七二五研究所 | Method for removing residual carbon on inner surface of small-caliber seawater copper-nickel pipe |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60204875A (en) * | 1984-03-29 | 1985-10-16 | Nisshin Steel Co Ltd | Manufacture of alumin hot dip aluminum coated steel sheet |
| JPS61243162A (en) * | 1985-04-19 | 1986-10-29 | Nippon Steel Corp | Production of al series hot dipped steel plate excellent in heat resistance |
| CN85100317A (en) * | 1985-04-01 | 1987-01-17 | 东北工学院 | Hot-dip plating with aluminium rare earth alloy |
| CN1301879A (en) * | 1999-12-28 | 2001-07-04 | 中国科学院力学研究所 | Method for thermal dip plating with rear earth aluminium alloy |
-
2014
- 2014-02-26 CN CN201410065034.9A patent/CN103754968A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60204875A (en) * | 1984-03-29 | 1985-10-16 | Nisshin Steel Co Ltd | Manufacture of alumin hot dip aluminum coated steel sheet |
| CN85100317A (en) * | 1985-04-01 | 1987-01-17 | 东北工学院 | Hot-dip plating with aluminium rare earth alloy |
| JPS61243162A (en) * | 1985-04-19 | 1986-10-29 | Nippon Steel Corp | Production of al series hot dipped steel plate excellent in heat resistance |
| CN1301879A (en) * | 1999-12-28 | 2001-07-04 | 中国科学院力学研究所 | Method for thermal dip plating with rear earth aluminium alloy |
Non-Patent Citations (1)
| Title |
|---|
| 张金民: "钢表面热浸渗铝层微观组织及稀土（La）影响的研究", 《河南科技大学-硕士学位论文》, 31 December 2006 (2006-12-31) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111979390A (en) * | 2020-07-02 | 2020-11-24 | 中国船舶重工集团公司第七二五研究所 | Method for removing residual carbon on inner surface of small-caliber seawater copper-nickel pipe |
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Application publication date: 20140430 |