CN103449552A - Energy-saving new scheme for producing fresh water by precooling seawater by virtue of sea tide pressure - Google Patents

Abstract

The invention provides an energy-saving new scheme for producing fresh water by precooling seawater by virtue of sea tide pressure. The energy-saving new scheme mainly comprises the following steps of drying a prefabricated large floating platform on the sea surface by virtue of the rising tide and the falling tide of the sea so as to press seawater into a circular tube coil type heat exchanger which is pre-mounted 300-500 m under the sea for precooling; next, conveying the precooled seawater to a heat exchange tube in a deicing tank through a heat retaining water reservoir along a heat retaining water delivery pipe for further precooling and then feeding the precooled seawater to the ice-making freezing tank of a seawater desalting plant for freezing; and furthermore, feeding the formed ice blocks to the deicing tank for melting to obtain fresh water. All the steps are repeated sequentially; as the seawater is precooled and then frozen and desalted continuously by virtue of the deep sea and the melting of the ice blocks, more than 60% of refrigeration energy consumption can be saved in contrast with direct freezing of the normal-temperature seawater of the seawater desalting plant; therefore, the purposes of continuously realizing continuous mass production of fresh water and refined salt, greatly saving lots of valuable energy sources and improving the economic benefit of the seawater desalting plant to a large extent can be completely achieved.

Description

Tide is pressed the energy-conservation new departure of seawater precooling preparing fresh water

Technical field: the present invention is to provide a kind of utilize ocean tidal power to drive water pump that seawater is sent to place, deep-sea that temperature is lower and cools to 5-8 degree centigrade after, then insulation is sent to novel energy-saving method and the device thereof that desalimtor carries out freezing manufacture fresh water.Press the energy-conservation new departure of seawater precooling preparing fresh water referred to as tide.

Technical background: desalination technology has very large progress at home and abroad, especially sun power evaporation desalination techniques has obtained very large development, the inventor has also in succession invented and has utilized wave to press seawater to get after cold the energy-saving technical scheme that send desalimtor's preparing fresh water, yet sun power and sea wave energy all exist and cut in and out, the time little unsettled shortcoming when large, thereby reduced utilization ratio, economic benefit and the output of sea water desaltination plant.Addressing these problems is exactly purpose of the present invention.

Technical scheme: in order to solve the problems that exist in desalting process, realize efficiently utilizing equipment, stably improve fresh water yield and save energy and improve the economic benefit of desalimtor, specific embodiment of the present invention is: select one there is no the island of Freshwater resources and place a large-scale buoyancy aid platform on certain a slice sea of its periphery, in the pre-opened hole of buoyancy aid platform also vertically is fixed in seabed through some circle posts, then on the circle capital vertically fixed at these, set up supporting frame, and on supporting frame the fixed installation some slowly-releasing energy single-direction and dual-direction all drivable speedup take out water pump, when morning and evening tides occurs in ocean, be fixed on the speedup that the single-direction and dual-direction movable rack on large-scale buoyancy aid just can utilize the lifting energy drives of large-scale buoyancy aid to be fixedly mounted on some slowly-releasing energy on supporting frame and take out water pump, a large amount of seawater just can be taken out water pump by speedup and be sent to the heat exchanger that is contained in advance 300-500 rice depths, seabed, then after having been absorbed heat by the low temperature seawater in seabed, be cooled to 5-8 degree centigrade, being sent to desalimtor by insulating pipe again, to be located at the insulation tank of seashore eminence standby, then the Mare Frigoris water be incubated in tank is sent to again the freezing tank of desalimtor by the heat exchanger tube in the change ice groove that is embedded in desalimtor, and the seawater that utilizes original refrigeration equipment that these temperature have been pre-chilled to lesser temps in the freezing tank ice making of further lowering the temperature, obtain after ice cube and again ice cube is delivered to the change ice groove that is embedded with heat exchanger tube and be fused into fresh water, and utilize ice cube to be fused into the seawater in the heat exchanger tube force feed past of the further precooling of process from being embedded in ice groove of fresh water, finally the fresh water of these fusings is extracted into to the normal temperature water storage tower is stand-by to be got final product, in addition, fresh water freezes, and to separate out rear remaining seawater be exactly concentrated salt solution, and these, concentrated salt solution is extracted into and gets salt by evaporation of sea-water, boil the salt off the water or salt field can become or shine and make edible salt or industrial salt with the shorter time boiling.Constantly repeat aforesaid process, just can realize saving the purpose of mass energy in scale operation fresh water, salt or industrial salt.

What below introduce is concrete construction, the installation connection scheme of realizing apparatus of the present invention.Concrete installation connects: at first; in the selected suitable region of island periphery; utilize stainless steel to make bed die or do the end at smooth ground paving last layer film; surrounding frame top plate; form a large-scale bed die, and at center and the periphery of bed die, some suitable pre-opened hole formpistons are set, put reinforcing mat and the load-bearing girder steel frame rolled; then by the high standard deposit concrete and maintain certain date, can be made into a large-scale boat form buoyancy aid platform handling to standby on predetermined sea.Then in the seabed of island periphery predetermined maritime area, the position by buoyancy aid platform pre-opened hole vertically fixedly erects the right cylinder of corresponding radical, and allow it pass from the pre-opened hole of large-scale buoyancy aid platform, then at the solid supporting frame of the right cylinder top of predetermined height button, fix two tooth bars that all can drive up and down speed-up gears at the RC the right and left of large-scale buoyancy aid platform afterwards, and engage on the heel teeth be inserted in the speed-up gears that the speedup be mounted on circle capital end bearing frame takes out water pump, and respectively speedup is taken out to the inhalent siphon of water pump, the insulation rising pipe is communicated with through large-scale buoyancy aid platform pre-opened hole straight-through seawater depths and with abyssal disk tubular heater exchhanger, then be incubated the inlet valve that rising pipe is communicated with the insulation tank of seashore eminence, the flowing water Valve of the insulation tank of seashore eminence connects after rise thermal insulation delivery pipe the penstock that enters of the heat exchanger tube that is communicated with in being embedded in ice groove, the flowing water Valve of heat exchanger tube connect desalimtor the ice making freezing tank enter penstock, the flowing water Valve of ice making freezing tank is communicated with gets salt by evaporation of sea-water, boil the salt off the water or salt field gets final product.Arrive this, device of the present invention is built assembly and connection and is completed.

Principle of work: method for application of the present invention and principle of work are: utilize the flood tide rising of ocean and ebb decline to drive prefabricated large-scale buoyancy aid platform on sea, driving is fixed in speedup on circle capital end bearing frame and is taken out water pump seawater is sent to and is pre-installed in seabed 300---and carry out precooling in the disk tubular heater exchhanger of 500 meters degree of depth and be cooled to 5-8 degree centigrade, be delivered to the island insulation tank of eminence on the bank along rise thermal insulation delivery pipe again, then from the insulation tank automatically along rise thermal insulation delivery pipe be delivered to heat exchanger tube being embedded in ice groove accept after further precooling cooling to send to again in the ice making freezing tank of desalimtor, go freezing icing, then again delivering to of the ice cube ice groove fusing after freezing the seawater that further the heat exchanger tube force feed of precooling from being embedded in ice groove come ... thus and thus, go round and begin again, because the melting process of constantly utilizing deep-sea and ice cube has carried out after the precooling carrying out freezing desalination to the seawater that is sent to desalimtor again, therefore, can save energy consumption for cooling more than 60% with respect to desalimtor by direct freezing normal temperature seawater, can realize producing in large quantities continuously fresh water and refined salt fully, saved in large quantities the valency energy, improved significantly the purpose of the economic benefit of desalimtor.Ultimate principle of the present invention that Here it is.

Social benefit: the present invention have round-the-clock stable, not climate condition variable effect, can on the sea of surrounding sea areas, any island, build use etc. advantage, if the maritime nation, particularly on the vast coastal island that there is no Freshwater resources and salt product resource of China, promote the present invention program, there is the very important meaning of promoting economic development and beautifying the environment.

Claims (2)

1. tide is pressed the energy-conservation new departure of seawater precooling preparing fresh water, comprise and select one there is no the island of Freshwater resources and place a large-scale buoyancy aid platform on certain a slice sea of its periphery, in the pre-opened hole of buoyancy aid platform also vertically is fixed in seabed through some circle posts, then on the circle capital vertically fixed at these, set up supporting frame, and on supporting frame the fixed installation some slowly-releasing energy single-direction and dual-direction all drivable speedup take out water pump, when morning and evening tides occurs in ocean, be fixed on the speedup that the single-direction and dual-direction movable rack on large-scale buoyancy aid just can utilize the lifting energy drives of large-scale buoyancy aid to be fixedly mounted on some slowly-releasing energy on supporting frame and take out water pump, a large amount of seawater just can be taken out water pump by speedup and be sent to the heat exchanger that is contained in advance 300-500 rice depths, seabed, then after having been absorbed heat by the low temperature seawater in seabed, be cooled to 5-8 degree centigrade, being sent to desalimtor by insulating pipe again, to be located at the insulation tank of seashore eminence standby, then the Mare Frigoris water be incubated in tank is sent to again the freezing tank of desalimtor by the heat exchanger tube in the change ice groove that is embedded in desalimtor, and the seawater that utilizes original refrigeration equipment that these temperature have been pre-chilled to lesser temps in the freezing tank ice making of further lowering the temperature, obtain after ice cube and again ice cube is delivered to the change ice groove that is embedded with heat exchanger tube and be fused into fresh water, and utilize ice cube to be fused into the seawater in the heat exchanger tube force feed past of the further precooling of process from being embedded in ice groove of fresh water, finally the fresh water of these fusings is extracted into to the normal temperature water storage tower is stand-by to be got final product, in addition, fresh water freezes, and to separate out rear remaining seawater be exactly concentrated salt solution, these, concentrated salt solution is extracted into and gets salt by evaporation of sea-water, boil the salt off the water or salt field can become or shine and make edible salt or industrial salt with the shorter time boiling, constantly repeat aforesaid process, just can realize saving the purpose of mass energy in scale operation fresh water, salt or industrial salt.

2. concrete installation connection is: at first, in the selected suitable region of island periphery, utilize stainless steel to make bed die or do the end at smooth ground paving last layer film, surrounding frame top plate, form a large-scale bed die, and at center and the periphery of bed die, some suitable pre-opened hole formpistons are set, put reinforcing mat and the load-bearing girder steel frame rolled, then by the high standard deposit concrete and maintain certain date, can be made into a large-scale boat form buoyancy aid platform handling to standby on predetermined sea, then in the seabed of island periphery predetermined maritime area, the position by buoyancy aid platform pre-opened hole vertically fixedly erects the right cylinder of corresponding radical, and allow it pass from the pre-opened hole of large-scale buoyancy aid platform, then at the solid supporting frame of the right cylinder top of predetermined height button, fix two tooth bars that all can drive up and down speed-up gears at the RC the right and left of large-scale buoyancy aid platform afterwards, and engage on the heel teeth be inserted in the speed-up gears that the speedup be mounted on circle capital end bearing frame takes out water pump, and respectively speedup is taken out to the inhalent siphon of water pump, the insulation rising pipe is communicated with through large-scale buoyancy aid platform pre-opened hole straight-through seawater depths and with abyssal disk tubular heater exchhanger, then be incubated the inlet valve that rising pipe is communicated with the insulation tank of seashore eminence, the flowing water Valve of the insulation tank of seashore eminence connects after rise thermal insulation delivery pipe the penstock that enters of the heat exchanger tube that is communicated with in being embedded in ice groove, the flowing water Valve of heat exchanger tube connect desalimtor the ice making freezing tank enter penstock, the flowing water Valve of ice making freezing tank is communicated with gets salt by evaporation of sea-water, boil the salt off the water or salt field gets final product.