CN101405064B

CN101405064B - Method of removing ice from ice-containing material with use of liquefied substance

Info

Publication number: CN101405064B
Application number: CN2007800102431A
Authority: CN
Inventors: 神田英辉
Original assignee: Central Research Institute of Electric Power Industry
Current assignee: Central Research Institute of Electric Power Industry
Priority date: 2006-03-24
Filing date: 2007-03-23
Publication date: 2012-04-04
Anticipated expiration: 2027-03-23
Also published as: RU2392029C1; JPWO2007111269A1; CN101405064A; CA2646660C; JP4734406B2; WO2007111269A1; RU2008142111A; CA2646660A1

Abstract

A method of removing ice, and ice removing system, which irrespective of the form of ice contained or the content thereof, are applicable to various ice-containing materials and attain efficient ice removal in high recovery ratio within a short period of time. There is provided a method of removing ice from an ice-containing material with the use of a liquefied substance, characterized by including the step (1) of bringing into contact with an ice-containing material a substance resulting from liquefaction of a substance being a gas under ordinary temperature ordinary pressure conditions so as to cause the liquefied substance to dissolve the ice of the ice-containing material, thereby obtaining a liquefied substance of high water content, and the step (2) of vaporizing the substance being a gas under ordinary temperature ordinary pressure conditions contained in the liquefied substance of high water content to thereby separate the substance in the form of a gas from the water. Further, there is provided a system for removing ice from ice-containing material with the use of the above substance, characterized by including, connected in series, a compressor, condenser, dehydrator, evaporator and separator.

Description

Use the de-icing method of icing material that contains of liquefaction thing

Technical field

The present invention relates to use the de-icing method of icing material that contains of liquefaction thing; More specifically; Relate under the operating temperature close and and can remove deicing efficiently with less required drive with outer atmospheric temperature, no matter and content and the kind of ice, can be used for wide spectrum interior contain the de-icing method and the deicing system of icing material.

Background technology

As the method for removing the ice that contains in the material, blow away except that considering to heat or method such as freeze drying, during for the ice of material surface, can consider the method for physical damage at ice.

The announcement of invention

Yet, in the said method, except that the needs staff, might cause damage to material.In addition; According to the difference of material, the material of the difficulty of heating is also arranged, though can use freeze drying to such material; But make the ice distillation through decompression in the freeze drying; Therefore need more energy, cost high, so only limit to the manufacturing purposes of object of the high added values such as porous body of pharmaceuticals, food, high-voidage, deicing is difficulty very.

The present invention is in view of above-mentioned problem points in the past; Its objective is provides de-icing method and deicing system; No matter the form of the ice that this de-icing method and deicing system contain and content can be used for the various ice materials that contain, and can carry out deicing efficiently at short notice and with high-recovery.

The present inventor has carried out conscientiously research for reaching above-mentioned purpose; The result finds; Through being liquefaction, the gasification phenomenon of the liquefaction thing of the material of gas under the condition of utilizing normal temperature and pressure; Can be under the situation of not damaging wood chip from the wood chip that freezes, only reclaim ice expeditiously, confirm that also it can be applied to variously contain the ice material, thereby accomplished the present invention.

The present invention provides following invention.

(1) use the de-icing method of icing material that contains of liquefaction thing to be characterised in that; Comprise under the condition that makes normal temperature and pressure for the liquefaction thing of the material of gas contacts, makes this to contain ice of icing in the material to be dissolved in this liquefaction thing, to obtain the operation (1) that height contains the liquefaction thing of moisture with containing the ice material, and this height is contained under the condition of the normal temperature and pressure in the liquefaction thing of moisture be the gasification substance of gas, the operation (2) of separating from moisture as gas by this.

(2) de-icing method of record is characterised in that in above-mentioned (1); Also comprise with under the condition of the normal temperature and pressure that is separated by gasification in the above-mentioned operation (2) for the Gas Recovery of the material of gas, make this gas liquefaction, the operation (3) of the thing that obtains liquefying, reuse the liquefaction thing that obtains in this operation (3) in the above-mentioned operation (1).

(3) de-icing method of record is characterised in that in above-mentioned (1) or (2), is under 25 ℃ and 1 atmospheric pressure, to be the material of gas for the material of gas under the condition of normal temperature and pressure.

(4) de-icing method of each record in above-mentioned (1)～(3) is characterised in that, is the mixture more than a kind or 2 kinds that is selected from dimethyl ether, ethyl-methyl ether, formaldehyde, ketenes and acetaldehyde for the material of gas under the condition of normal temperature and pressure.

(5) de-icing method of each record in above-mentioned (1)～(4) is characterised in that, containing the ice material is coal, food, porous body, biology, living beings (biomass) raw material or medicinal compounds.

(6) de-icing method of each record in above-mentioned (1)～(5) is characterised in that, the contact in the above-mentioned operation (1) makes above-mentioned liquefaction thing contain ice material convection current and contact and carry out with above-mentioned.

(7) de-icing method of each record in above-mentioned (1)～(6) is characterised in that, is 0.1L/kg～1000L/kg with the amount that contains the liquefaction thing that contact of ice material with respect to containing the unit moisture conversion amount of icing the ice that contains in the material in the above-mentioned operation (1).

(8) de-icing method of each record in above-mentioned (1)～(7) is characterised in that, in-50 ℃～25 ℃ temperature range, carries out a series of deicing operation.

(9) material of having removed ice that the de-icing method through each record in above-mentioned (1)～(8) obtains.

(10) containing the deicing system of icing material is characterised in that; By with the compressor of gas pressurized that under the condition of normal temperature and pressure is the material of gas; With the pressurization above-mentioned gas condense become liquefaction thing condenser; Make above-mentioned liquefaction thing and contain the ice material and contact, dissolve this and contain the ice iced in the material, become the dehydrator that height contains the liquefaction thing of moisture; Make this height contain under the condition of the normal temperature and pressure in the liquefaction thing of moisture the evaporimeter for the gasification substance of gas, the separator series connection that the gas of the above-mentioned substance of gasification is separated with moisture links and constitutes.

(11) deicing system of above-mentioned (10) record is characterised in that, is connected through heat exchanger with above-mentioned evaporimeter by above-mentioned condenser to constitute.

(12) deicing system of above-mentioned (10) or (11) record is characterised in that; Also constitute the decompressor binding of connecting with above-mentioned compressor; The merit that this decompressor is done to external world is recovered; This merit is used as the structure that the part of the power of above-mentioned compressor drops into, and this decompressor is used to make under the condition of normal temperature and pressure of above-mentioned gasification the gas for the material of gas to expand.

(13) deicing system of each record in above-mentioned (10)～(12) is characterised in that, above-mentioned compressor, condenser, dehydrator, evaporimeter and decompressor form the loop, makes under the condition of normal temperature and pressure to circulate in this loop for the material of gas.

(14) deicing system of each record in above-mentioned (10)～(13) is characterised in that; Constituting degassing tower and above-mentioned separator links; The Gas Recovery of the degassing is back to the structure in the loop, and this degassing tower is used for the gas for the material of gas under the condition of the normal temperature and pressure that uses above-mentioned separator separates is outgased and recovery.

(15) deicing system of each record in above-mentioned (10)～(14) is characterised in that, above-mentioned dehydrator makes above-mentioned liquefaction thing contain ice material convection current and contact with above-mentioned.

Through the present invention; The deicing system that de-icing method can be provided and be used for implementing efficiently this method; No matter what of the form of the contained ice of this de-icing method, content can be used for the various ice materials that contain, and can remove deicing efficiently; Promotion contains the utilization again of icing material and discards, and helps protection of resources.

In the de-icing method of the present invention; Use under the condition of normal temperature and pressure material as gas; Promptly with the intersolubility of ice high and under atmospheric pressure, be that the liquefaction thing of material of gas is as the medium of deicing under the temperature close with outer atmospheric temperature; So need not too harsh condition when separating with the ice contact and with ice, can deicing under the operating temperature close with outer atmospheric temperature.In addition, when separate ice and liquefaction thing, need not to make the part evaporation of ice, need not reclaim the evaporation latent heat of ice fully, can carry out energy-conservation deicing.

And, from the recovery for the gas of the material of gas is also easy down from the normal temperature and pressure that separates the moisture of ice.The gas that reclaims can be recycled through liquefying once more, so also good on the energy efficiency this point.And, through processing that the draining that separates is outgased, can remove the liquefaction thing simply, also can alleviate load to environment.

And, utilize deicing system of the present invention, can use under the normal temperature and pressure deicing more efficiently as the material of gas.

In addition, through connecting heat exchanger, recyclable and effectively utilize evaporation latent heat.And, through reclaiming the merit of being done by expansion in the decompressor, can reach further energy-conservation.

Therefore, the present invention can be widely used in from material, removing the processing of deicing.For example; Can be applicable to cause by heat drying the means of damaged materials such as food drying under the state that remains in below 0 ℃; Do not heat etc. and take out the means that are encapsulated in the material in the ice cube; The method that the material that is embedded in the permafrost is taken out under the state that remains in below 0 ℃, with not anti-heating, can't heat drying pharmaceutical etc. compound, composition and protein etc. freezing, under the state that remains in below 0 ℃ dewatered means.Special its utilization of expectation as cryodesiccated substitute technology.In addition, through being applied to biomass resource, utilize to become easily, on the other hand, because removed ice, resource is decrement correspondingly again, and discarded becoming easily becomes technology preferable on the protection of resources this point so expect it.In addition, expect it, replace opening that 2004-No. 307294 communiques disclose, the freeze drying in the manufacturing process of porous bodies such as silica gel like Japanese Patent Laid as dewatered means.

Simple declaration to accompanying drawing

Fig. 1 be the expression deicing system of the present invention structure one the example sketch.

Fig. 2 is the sketch of temperature, pressure condition of an example of expression deicing system of the present invention.

Fig. 3 be the expression deicing system of the present invention structure one the example sketch.

Symbol description

1,1 ' compressor

2 condensers

3 dehydrators

4 evaporimeters

4 ' cooler

4 " pressure-reducing valve

5 heat exchangers

6 separators

7 decompressors

8 degassing towers

8 ' pressure retaining valve

The 8a heating tank

9 motor

10 warmers

21 rustless steel containers

22 closed containers

23 dehydrators

24 ethanol grooves

The best mode that carries out an invention

The present invention relates to contain the deicing of icing material, biggest characteristic is, utilizes under the normal temperature and pressure solubility marked change that makes ice for the gas-liquid phase transfer phenomenon of the material of gas.Promptly; Normal temperature and pressure is imposed processing such as pressurization, cooling down for the material of gas; Make it become liquid condition, make this contain the ice of ice in the material and be dissolved in the gained liquefaction thing after, if make the temperature and pressure varied somewhat; Then have only the evaporation of solvent selectivity ground, the gas of water and solvent is easily separated.

As the object of the invention described above contain the ice material, be that the material that contains ice gets final product, do not have restriction especially.

" ice " is meant the water or the aqueous solution that freezes, no matter its composition, origin etc.In addition, its meaning also comprises ice crystals such as snow.

" contain " surface that is meant at certain material, inner perhaps surface and inside and contain above-mentioned ice.The size of certain material, composition all do not have special restriction, but be preferably contain ice material be solid or pulpous state form.

The form that exists to containing the ice of ice in the material does not have special restriction yet, and can be inclusion in the ice of inside or be present in the ice between outer surface, solids, according to circumstances also can be to be arranged in the ice that the inboard pore of solids exists.And, the content ratio that contains the ice in the ice material is not had special restriction yet.

As the above-mentioned ice material that contains, the coal of for example specifically can giving an example, food, porous body, biology, biomass material (wood chip etc.), the compound of pharmaceutical grade, composition and protein.The present invention also can be used in these materials because at high temperature fragility etc. is former thereby be difficult to the material of heat drying.No matter coal is a undressed coal after the digging; Still (for example carried out certain processed after; Upgrading method in the oil (opening communique 2000-No. 290673) with reference to Japanese Patent Laid; The dehydration gimmick (with reference to 10-No. 338653 communiques of japanese patent laid-open) of use dry inert gas) coal all can be used as object of the present invention.As the kind of coal, the ub-bituminous coal of can giving an example, brown coal (brown coal), bavin coal (lignite), mud coal.

Below, describe with regard to de-icing method of the present invention and deicing system.

A. de-icing method of the present invention

The de-icing method of icing material that contains of use liquefaction thing of the present invention is characterised in that; Comprise under the condition that makes normal temperature and pressure for the liquefaction thing of the material of gas with contain the ice material and contact, make this to contain the ice of icing in the material to be dissolved in this liquefaction thing, to obtain the operation (1) that height contains the liquefaction thing of moisture; And this height is contained under the condition of the normal temperature and pressure in the liquefaction thing of moisture be the gasification substance of gas, the operation of separating from moisture as gas by this (2).Below, describe with regard to operation (1) and (2).

At first, in the operation (1), the liquefaction thing for the material of gas is contacted with containing the ice material, make this contain ice of icing in the material and be dissolved in this liquefaction thing, obtain the liquefaction thing that height contains moisture.

Be the material of gas under the condition of normal temperature and pressure, be meant the material that exists with gaseous state under the arbitrary temp in the scope that is contained in normal temperature and normal pressure and pressure condition at least.Promptly; If demonstrate the material of gaseous state under the condition of temperature A in the scope that is contained in normal temperature and normal pressure and pressure B, then it can not demonstrate gaseous state under the condition of temperature beyond the temperature A in the scope that is contained in normal temperature and normal pressure and the pressure beyond the pressure B.

The normal temperature here is meant the temperature close with the outer atmospheric temperature of cold district, generally is meant-50 ℃～25 ℃ scope, refers in particular to-25 ℃～10 ℃ scope.In addition, normal pressure is meant the pressure close with ambient pressure, generally is meant 1 scope about atmospheric pressure.

As being the material of gas under the condition of normal temperature and pressure; Specifically; Be preferably under 25 ℃ and 1 atmospheric condition to the material of gas, under 0 ℃ and 1 atmospheric condition, be the material of gas; Especially, best is under 25 ℃ and 1 atmospheric condition, also to be the material of gas for gaseous state and under 0 ℃ and 1 atmospheric condition.

From the angle that can carry out deicing with less required drive, to be preferably boiling point be near the normal temperature or material below it for the material of gas under the condition of normal temperature and pressure.Special good be that boiling point is, wherein better is, further better is the material below-5 ℃ below 25 ℃ below 10 ℃.If boiling point surpasses the material of normal temperature, then can predict, after state in the operation (2), need the energy of high temperature for making this gasification substance, the required energy of deicing increases, and is therefore not good.In addition, for the material of gas is preferably the material that does not contain sulphur in the molecular structure, sulphur is the carrying capacity of environment material that becomes the reason of acid rain under the condition of normal temperature and pressure.

As being the material of gas under the condition of normal temperature and pressure, the dimethyl ether of specifically can giving an example, ethyl-methyl ether, formaldehyde, ketenes, acetaldehyde, butane, propane etc.They can use a kind, or mix more than 2 kinds and use.Wherein be preferably independent dimethyl ether, and the mixture of dimethyl ether and above-mentioned other material as a specific example.

The boiling point of dimethyl ether under 1 atmospheric pressure is-24.8 ℃, under-10 ℃～50 ℃ atmospheric pressure, is gas.For example by announcements such as 09-No. 286754 communiques of each communique, japanese patent laid-open of No. 09-309852,09-No. 309850～japanese patent laid-open of each communique, japanese patent laid-open of No. 10-182535,11-No. 130714 communiques of japanese patent laid-open, 10-No. 195009 communiques of japanese patent laid-open, 10-No. 195008 communiques of japanese patent laid-open, 10-No. 182527～japanese patent laid-open of japanese patent laid-open, 09-No. 173863 communiques of japanese patent laid-open, 09-No. 173848 communiques of japanese patent laid-open, 09-No. 173845 communiques of japanese patent laid-open, the technology that discloses according to their can easily obtain dimethyl ether for the manufacturing approach of high efficiency dimethyl ether and manufacturing installation.

On the other hand, among the present invention, the liquefaction thing be meant through after the liquid that obtains from gas of the liquefaction stated.That is, among the present invention, utilizing under the condition of above-mentioned normal temperature and pressure with liquid condition is the material of gas.

In this operation (1), the liquefaction thing for the material of gas is contacted with containing the ice material, make this contain ice of icing in the material and be dissolved in this liquefaction thing, obtain the liquefaction thing that height contains moisture.

Promptly; Make under the condition of normal temperature and pressure for the liquefaction thing of the material of gas with contain the ice material in contain ice, promptly be present in and contain the outer surface of icing material or the ice of inside contacts; The ice that contains in the ice material is dissolved in the liquefaction thing as liquid, becomes the liquefaction thing that contains ice with high concentration.

Here, for the liquefaction thing for the material of gas under the condition that makes normal temperature and pressure contacts with containing the ice material, needs maintain liquid condition with this material.The method that maintains liquid condition does not have special restriction, but it is desirable to keep the liquefaction thing with saturated vapour pressure.It is desirable to especially temperature conditions with operation (1) suitably be set in-50 ℃～25 ℃, wherein better in-25 ℃～10 ℃ the scope.

Under the condition of normal temperature and pressure for the liquefaction thing of the material of gas to the contact amount that contains the way of contact of ice material, liquefaction thing, time of contact equitemperature and the condition beyond the pressure can suitably set, make to contain the ice of icing in the material and be dissolved in this liquefaction thing.

The way of contact can be to impregnated in the liquefaction thing containing the ice material, any means that liquefaction stream is crossed contain ice material etc. in common deicing method, to adopt, but it is desirable to the convection current contact.That is, be preferably under the condition that makes normal temperature and pressure liquefaction thing for the material of gas with respect to containing ice material convection current ground contact.In addition, also can enforcement be suitably made up in convection current contact and other way of contact, for example convection current contact back, will contain the ice material and impregnated in the liquefaction thing and then carry out convection current contact etc.

In addition, can suitably determine with the amount that contains the liquefaction thing that contacts of ice material.Among the present invention; With respect to the amount that contains the ice that contains in the ice material; The contact amount of liquefaction thing is a small amount of; The above amount of the theoretical amount of for example following liquefaction thing, particularly more than the theoretical amount and in amount below the amount of 2 times of theoretical amount, wherein be more preferably more than the theoretical amount and in 1.5 times of amounts below the amount of theoretical amount, can achieve the goal.But in actual treatment; The amount that the ice that contains in it is desirable to be set at the liquefaction thing and containing the ice material contacts fully, the unit quantity (amount of the water when ice is dissolved as water) that can be made as with respect to contain the ice that contains in the ice material usually be 0.1L/kg～1000L/kg, be preferably 0.5L/kg～900L/kg, better be the scope of 1.0L/kg～800L/kg.

The theoretical amount of the liquefaction thing here is meant to making to contain the ice dissolving of ice in the material, obtain liquefaction thing that height the contains moisture theoretical amount of needs at least.That is, be under the temperature of instigating when containing the ice material and contacting with the thing that liquefies, for dissolving is equivalent to the amount of the required MIN liquefaction thing of the ice of 1g moisture, the inverse of the saturated vapour pressure of the liquefaction thing under the available said temperature is represented.For example; Use dimethyl ether as being under the situation that 1g water is freezed to form as the material of gas, ice under the condition of normal temperature and pressure; Because the saturated vapour pressure of-10 ℃ of following dimethyl ether is 0.18MPa; Water saturation solubility to liquefaction DME under-10 ℃ is 5.1wt%, so this liquefied dimethyl ether that is equivalent to the required theoretical amount of the dissolving of ice of the water that 1g freezes is 19.6g.

Contained time of contact (deicing time) ice material and liquefaction thing kind and conditions such as amount, the way of contact about, be difficult to unified regulation, be dissolved in the time in the thing that liquefies fully but can suitably set the ice that contains in the ice material.

If the general condition in expression convection current when contact, then can be made as the flow velocity of liquefaction thing more than 10L/ hour, be preferably more than 30L/ hour, better for more than 50L/ hour, the upper limit generally can be made as below 400L/ hour, be preferably below 100L/ hour.In addition, can be made as time of contact more than 5 minutes, be preferably more than 8 minutes, better be 10 minutes～5 hours.

In addition, if the general condition when contacting is flooded in expression, then can make the liquefaction thing of 10L contact 1～3 hour with the ice material that contains of 85g.

As stated, in the operation (1), can make under the condition of normal temperature and pressure to the liquefaction thing of the material of gas and ice material and contact with containing; This ice that contains in the ice material is dissolved in this liquefaction thing; Obtain the liquefaction thing that height contains moisture, simultaneously, contain the ice that contains in the ice material and be removed.

Then, in the operation (2), the height that obtains in above-mentioned (1) is contained under the condition of the normal temperature and pressure in the liquefaction thing of moisture be the gasification substance of gas, separate from moisture as gas by this from ice.Promptly; The liquefaction thing that the height that obtains in the operation (1) contains moisture is under the condition of normal temperature and pressure the state that the liquefaction thing for the material of gas mixes with the moisture of self-contained ice material; Can only make under the condition of normal temperature and pressure liquefaction thing for the material of gas from wherein optionally gasification, separate in the moisture of always self-contained ice material by this.

Gasification is to instigate liquid (liquefaction thing) to be changed to gas.The gasification that height contains under the condition of the normal temperature and pressure in the liquefaction thing of moisture for the material of gas can carry out its each condition that is higher than in the operation (1) through promoting temperature conditions and/or pressure condition.

When improving temperature conditions; Be preferably and be promoted to above being the temperature of the boiling point of the material of gas under the condition of normal temperature and pressure; But among the present invention, be the material of gas, so usually can be near normal temperature, i.e. the temperature conditions gasified close with outside air temperature because utilize under the condition of normal temperature and pressure.That is to say, can not pass through heating, and only need its state of cooling from operation (1) is returned to the normal temperature state, promptly gasifiable.As the temperature conditions of gasification, by liquefaction thing that uses and pressure condition decision, but be preferably the normal temperature state that is made as ,-50 ℃～25 ℃, spy good be to be made as-25 ℃～10 ℃.When pressure condition was reduced, this condition can suitably determine according to temperature conditions less than saturated vapour pressure.

As stated; In the operation (2), need not to make under the condition of normal temperature and pressure and can easily gasify, make it be transformed to gas from liquid (liquefaction thing) for the material of gas stands too harsh condition; Simultaneously, can be easily with separating in the ice of the always self-contained ice material of this gas or the water.

As described above said; In the de-icing method of the present invention; Through above-mentioned operation (1) and (2); Can from contain the ice material, remove deicing, but also can comprise with under the condition of the normal temperature and pressure that is separated by gasification in the above-mentioned operation (2) for the Gas Recovery of the material of gas, make this gas liquefaction, the operation (3) of the thing that obtains liquefying.

Liquefaction is meant that with the gas conversion that under the condition of normal temperature and pressure is the material of gas be liquid.The liquefaction that under the condition of normal temperature and pressure is the material of gas can be through pressurization and/or cooling, i.e. pressurization or cooling, or pressurization with cooling and be used for carrying out, the normal boiling point of the material that concrete implementation condition can be considered to use etc. is suitably selected advantageous conditions.When particularly adopting cooling; Be preferably chilling temperature is controlled at normal boiling point, in addition, from carrying out the angle of deicing easily; Be preferably and be set in normal temperature, be in the scope of outer atmospheric temperature, for example-50 ℃～25 ℃, special good scope for-25 ℃～10 ℃.

In addition, when using boiling point under 1 atmospheric pressure to surpass 0 ℃ material, be preferably through the cooling more than boiling point and liquefy.This be because, the saturated vapour pressure of material is 1 atmospheric pressure of less than when normal boiling point is following, owing to the internal pressure of this reason device is 1 atmospheric pressure of less than, therefore the manufacturing cost of device increases, becoming difficulty of operation.

Condition to pressurization is difficult to vague generalization, but add the boiling point of depressing be preferably be set in normal temperature, be in the scope of outer atmospheric temperature, for example-50 ℃～25 ℃, special good scope for-25 ℃～10 ℃.With cooling and time spent, can determine according to chilling temperature.

Through in above-mentioned operation (1), reusing the liquefaction thing that obtains in the above-mentioned operation (3), in the amount of the DME that in reducing de-icing method of the present invention, should append, can reduce discarded amount, so preferable on the protection of resources this point.

In addition; May cause materials such as damaged food, compound etc. need maintain under the situation of carrying out deicing under the frozen state by heat drying, above-mentioned operation (1) and (2) or the operation (3) that comprises as required be preferably at temperature conditions be below 0 ℃, the special good enforcement in-25～0 ℃ the scope that is.Through in the said temperature scope, handling, the draining from ice of gained is separated out as ice.

In the de-icing method of the present invention, use the medium of liquid, so the difference of the ice concentration in saturation solubility of icing in the liquefaction thing and the liquefaction thing becomes the driving force (driving force) of deicing as deicing.And the weight of the saturation solubility of the theoretical maximum of soluble ice amount and ice, liquefaction thing is proportional in the liquefaction thing.If with its with the deicing of coal in the past in the dry inert gas that uses the theoretical maximum of transpirable ice amount compare; Then the saturation solubility of ice is about 5.1% near-10 ℃, and is high in the extreme with respect to the saturated vapour pressure dividing potential drop (about 0.26%) of the airborne steam under synthermal.Above-mentioned high blending ratio is impossible under gaseous state, simultaneously, uses liquid also to be this as the characteristic of removing ice medium.In addition, the density of water is big in the extreme with respect to the density of steam, so the deicing of available a spot of liquefaction thing.

On the other hand, when removing deicing, be decompressed to saturated vapour pressure, the ice distillation less than ice with freeze drying.Because the saturated vapour pressure of ice is extremely low,, be difficult to reclaim evaporation latent heat so the density of the evaporation latent heat of steam reduces.

Relative therewith, if as de-icing method of the present invention, use the medium of liquid, then need not to make the ice evaporation can remove deicing as deicing, the recovery of evaporation latent heat does not need fully self.In addition; Because use normal temperature and pressure, be under the ambient atmosphere condition as the liquefaction thing of the material of gas as liquid; So pass through in extraneous atmospheric conditions; Promptly, in the temperature range about-50 ℃～25 ℃, about 1 atmospheric pressure, adjust as required, can carry out a series of deicing operation, can carry out energy-conservation deicing.

The material that utilizes de-icing method of the present invention to remove ice can be used as material and utilizes, expects its utilization as cryodesiccated substitute technology especially.For example; Can be applicable to cause by heat drying the means of damaged materials such as food drying under the state that remains in below 0 ℃; Do not heat etc. and take out the means that are encapsulated in the material in the ice cube; The method that the material that is embedded in the permafrost is taken out under the state that remains in below 0 ℃, with not anti-heating, can't heat drying pharmaceutical etc. compound, composition and protein etc. freezing, under the state that remains in below 0 ℃ dewatered means.

In addition, through being applied to biomass resource, utilize to become easily, on the other hand, because removed ice, resource is decrement correspondingly again, and discarded becoming easily becomes technology preferable on the protection of resources this point so expect it.Special its utilization of expectation as cryodesiccated substitute technology.

B. deicing system of the present invention

The present invention provides the deicing system of using the liquefaction thing.

Deicing system of the present invention is characterised in that; By with the compressor of gas pressurized that under the condition of normal temperature and pressure is the material of gas; With the pressurization above-mentioned gas condense become liquefaction thing condenser; Make above-mentioned liquefaction thing and contain the ice material and contact, dissolve this and contain the ice iced in the material, become the dehydrator that height contains the liquefaction thing of moisture; Make this height contain under the condition of the normal temperature and pressure in the liquefaction thing of moisture the evaporimeter for the gasification substance of gas, the separator series connection that the gas of the above-mentioned substance of gasification is separated with moisture links and constitutes.

The deicing system of the invention described above is applicable to the de-icing method of the present invention of putting into practice explanation in above-mentioned (A), through utilizing native system, can carry out the de-icing method of the invention described above efficiently.

The summary of one example of the structure of deicing system of the present invention is as shown in Figure 1.

In this example, supposed and used dimethyl ether as being the situation of the material of gas under the condition of normal temperature and pressure, but system of the present invention is not limited to this.Like what explain in above-mentioned (A), the boiling point of dimethyl ether under 1 atmospheric pressure is gas for-25 ℃ approximately under-25 ℃～10 ℃ atmospheric pressure, so, be the dimethyl ether (the liquefaction thing of dimethyl ether) that obtains liquid condition at normal temperatures, need add the operation of depressing.

Deicing system shown in Figure 1 is by the compressor 1,1 ' that is used for the pressurization of dimethyl ether steam; Be used for condenser 2 with the steam liquefaction of pressurization; The dimethyl ether (liquefied dimethyl ether) that makes liquefaction contact, dissolve ice, becomes liquefaction thing (containing the liquefied dimethyl ether from the water of ice) that height contains moisture, carries out the dehydrator 3 of deicing by this with containing the ice material, and makes dimethyl ether the containing to connect through pipe arrangement successively from the evaporimeter 4 that optionally gasifies the liquefied dimethyl ether of the water of icing and link of gained after deicing.Wherein, condenser 2 is connected through heat exchanger 5 with evaporimeter 4.

In the system shown in Figure 1; Also has the separator (gas-liquid separator or gas-solid separator) 6 that the dimethyl ether steam that gasifies in the evaporimeter 4 and get is separated with water or ice; And the decompressor 7 that uses the dimethyl ether steam adiabatic expansion that separator 6 separates successively with evaporimeter 4 adjacency, link through the pipe arrangement series connection.Decompressor 7 also links with compressor 1, forms closed-loop path (closed circuit) as whole system.Dimethyl ether carries out the state variation of gas-liquid on one side, in this loop circulate on one side, carry out repeatedly and the separating and contact of ice.

In addition, cooler 4 ' and pressure-reducing valve 4 " and dehydrator 3 adjacency, series connection links.They are to adjust the temperature when making the liquefied dimethyl ether gasification, the parts of pressure, can be considered to the part of evaporimeter 4.

In the system shown in Figure 1, also have degassing tower 8 and separator 6 to link.Degassing tower 8 is the parts that are used for dissolving the dimethyl ether degassing of depositing ice that separates from dimethyl ether with separator 6 or the water, specifically, reduces the degassing tower pressure inside with pressure retaining valve 8 ', dimethyl ether is gasified and reclaims.When separator 6 pressure inside being become be higher than atmospheric high pressure, molten in the water (ice) that separates with separator 6 have a gas of dimethyl ether.So if this water (ice) is directly discharged, then the load to environment is big, further increases the loss amount of dimethyl ether.Therefore, in the degassing tower 8, recovery is dissolved and is stored in the dimethyl ether in the water (ice), will be controlled at Min. to the load of environment and the loss amount of dimethyl ether.

Degassing tower 8 links with above-mentioned loop, the degassing in tower and the dimethyl ether that is recovered is back in the loop through not shown pipe arrangement once more.

In addition, be provided for heating the heating tank 8a of ice in the bottom of degassing tower 8, can promote dimethyl ether from ice, to separate by this, the rate of recovery of dimethyl ether is improved.

In the decompressor 7, its merit of doing to external world is recovered, and this merit is used as the part input of the power of the compressor 1 of dimethyl ether pressurization is utilized.In addition, compressor 1 is divided into 1 ' two sections on the 1st compressor 1 and the 2nd compressor, and the 1st compressor and decompressor 7 link, and reclaim the merit that decompressor 7 is done, as the power utilization of the 1st compressor 1.The merit that decompressor 7 is done to external world is meant mainly that gas of dimethyl ether is followed volumetric expansion and the merit done.In addition, in the overheated gas of the dimethyl ether that from evaporimeter 4, flows out, possibly have by the mobile spittle that is involved in of overheated gas and sneak into, so in the decompressor 7, may obtain the merit done by the gasification of the spittle of sneaking into, this merit is also contained in the merit of doing to external world.

In addition, condenser 2 is connected through heat exchanger 5 with evaporimeter 4, is effectively utilized so the evaporation latent heat of liquefied dimethyl ether is recovered.

On the other hand, the 2nd compressor 1 ' is supplied with power by motor 9, only the 2nd compressor 1 ' is carried out from the input of the merit of outside.

In addition, be provided with warmer 10 in the system of Fig. 1.Warmer 10 is parts of the optimum temperature of the inlet that is adjusted to compressor 1 of the temperature with effluent air from decompressor 7, is the parts that the difference of utilizing condition etc. according to liquefied dimethyl ether is provided with as required.

In the system of Fig. 1, it is relevant to contain ice and the liquefied dimethyl ether three contained in ice material, this material.Be conceived to each material, the flow process of native system is described.

At first, contain the ice material shown in the dotted line among Fig. 1, be filled in the dehydrator 3, after the deicing, take out end process from container through contacting with liquefied dimethyl ether.

Then, with regard in the system of Fig. 1 containing ice that ice contains in the material mobilely carry out following explanation.Among Fig. 1, contain the flowing of containing in the ice material of ice and represent with two-wire.

Ice is supplied to the system from dehydrator 3 as containing the ice that contains in the ice material.At first, through dehydrator 3, ice from contain the ice material stripping to liquefied dimethyl ether, afterwards to arrive evaporimeter 4 as the water-soluble form that is stored in the liquefied dimethyl ether.Utilize evaporimeter 4, most liquefied dimethyl ether gasification, it is separated to dissolve the water that is stored in the liquefied dimethyl ether, arrives separator 6.In the separator 6, the dimethyl ether evaporation is further separated with water.

Then, ice is imported in the degassing tower 8.If import ice in the degassing tower 8; Then through the pressure retaining valve 8 ' of inlet, the pressure inside of degassing tower 8 descends, and dimethyl ether is recovered; Can with to the damage control of the load of environment and dimethyl ether in Min., this load to environment is directly discharged the ice that separates with separator 6 and is caused.In addition, add hot water, the rate of recovery of dimethyl ether is improved through heating tank 8a with the bottom that is arranged at degassing tower 8.

Ice after the degassing flows out liquid as jar discharges, but the dimethyl ether steam that in separator 6, from this draining, separates can be back in the loop once more and uses.

Then, describe with regard to the mobile of dimethyl ether in the system of Fig. 1.Among Fig. 1, flowing of dimethyl ether represented with solid line.

Gas of dimethyl ether with compressor 1,1 ' add press to overheated gas after, in condenser 2, become supercooling liquid.The supercooling liquid of liquefied dimethyl ether is supplied to dehydrator 3, contacts with containing the ice material, should ice as water-soluble and separate, and flows to evaporimeter 4.Utilize evaporimeter 4, liquefied dimethyl ether and separated form water become overheated gas once more.At this moment, because condenser 2 links through heat exchanger 5 with evaporimeter 4,, the evaporation latent heat of liquefied dimethyl ether effectively utilized so being recovered.The part that overheated gas work done in decompressor 7 of the dimethyl ether that from evaporimeter 4, flows out, this merit are used as compressor power reclaims.The gas of dimethyl ether that from decompressor 7, flows out is sent to compressor 1 once more, in system, circulates.

In addition, possibly caused materials such as damaged food, compound etc. need maintain under the situation of carrying out deicing under the freezing state by heat drying, system of the present invention is preferably at temperature conditions and is below 0 ℃, is preferably enforcement in-25～0 ℃ the scope.Through in above-mentioned scope, handling, the draining from ice that obtains is separated out as ice.

Fig. 2 representes in 1 example of system of the present invention, the setting example of the phase state when using dimethyl ether, pressure, temperature, saturation temperature.For making the design easy of pressure and temperature, omit the degassing tower 8 that from water, the gas of dimethyl ether degassing is reclaimed, suppose and utilize separator 6 water can fully separate with dimethyl ether.In addition, suppose that the containing ice material after handling with dehydrator 3 does not contain dimethyl ether.Also supposition contains the ice material and does not contain impurity as ice.

At first, with the temperature of the inlet of the 1st compressor 1 as starting point, design temperature, pressure condition.The temperature of the 1st compressor 1 inlet (1) is-15 ℃, during than overheated 10 ℃ of saturation temperature, pressure is 0.10MPa.The degree of superheat is more little, and the pressure in the 1st compressor 1 is high more, therefore, though the power of compressor 1 reduce, opposite, the stage before in the suction port of compressor, the danger increase that causes the gas of dimethyl ether cooling to be condensed by ambient atmosphere.In addition, the ratio of heat capacities of dimethyl ether is 1.11, and is less, so temperature is difficult to raise during adiabatic compression.Therefore, the degree of superheat of the compressor outlet separately (2) of the 1st compressor 1 and the 2nd compressor 1 ', (3) is less than the degree of superheat of suction port of compressor.In the native system, during the degree of superheat of decision suction port of compressor, must also note the degree of superheat of compressor outlet.

The pressure of the outlet of the 2nd compressor 1 ' (3) is determined by the temperature of the cooling water that the cooler before the evaporimeter 44 ' uses.Here, outside air temperature is made as-15 ℃, the temperature of cooling water is made as with outside air temperature equates.If the temperature difference (approach temperature) of cooler 4 ' is made as 5 ℃, then the temperature of the liquefied dimethyl ether of the outlet of cooler 4 ' (evaporator inlet) (6) is-10 ℃.If also the temperature difference with condenser 2 and evaporimeter 4 is made as 5 ℃, then the temperature of the outlet of condenser 2 (4) is-5 ℃.If dimethyl ether is as the liquid existence of saturation temperature in dehydrator 3 in supposition, then the operating pressure of condenser 2 (pressure of compressor outlet) is confirmed.At this moment, saturation temperature is-5 ℃, so the pressure of the outlet of outlet of condenser 2 (4) and compressor 1 ' (condenser inlet) (3) is 0.22MPa.In addition, if be assumed to adiabatic compression, then the temperature of the outlet of the 2nd compressor 1 ' (3) is 6 ℃, surpasses its saturation temperature in the temperature of compressor outlet dimethyl ether, becomes overheated gas.

The saturation temperature of evaporimeter 4 is-10 ℃, so need be decompressed to the saturation pressure under-10 ℃ at the inlet (6) of evaporimeter 4.The saturation pressure here is the saturation pressure of the mixed liquor of moisture and the liquefied dimethyl ether of ice after dissolving in, but is approximately 0.18MPa with the saturation pressure of the big dimethyl ether of vapour pressure here.In addition, condenser 2 is 5 ℃ with the temperature difference of evaporimeter 4, so the temperature of the outlet of evaporimeter 4 (decompressor inlet) (7) is 1 ℃.The degree of superheat here is 11 ℃, so the heat loss in the scope to the inlet of decompressor 7 after the outlet of tolerable the 2nd compressor 1 ', this heat loss is that gas of dimethyl ether is heated to the heat loss in the scope of 11 ℃ of required energy.

After with separator 6 gas of dimethyl ether being separated from water, with decompressor 7 adiabatic expansions.The pressure of the outlet of decompressor 7 (8) equates with the pressure of the 1st compressor 1 inlet.Through adiabatic expansion, gas of dimethyl ether is cooled to-16 ℃.Owing to compare low 1 ℃ of temperature with the inlet of the 1st compressor 1, therefore need heating.Utilize decompressor 7, energy is recovered, as the power use of the 1st compressor 1.If the adiabatic efficiency of supposition decompressor 7 and the 1st compressor 1 is 80%, confirm that then the temperature of the 1st compressor outlet is-5 ℃, pressure is 0.15MPa.

Further, set, suppose that

decompressor

7 and 2 compressors 1,1 ' mechanical efficiency are 0.8, calculate the required drive of the 2nd compressor 1 ' according to determined temperature, pressure.

At first, the adding up to of the required merit of 2 compressors 1,1 ' (2 compressors 1,1 ' required theoretical merit) ÷ 0.8.On the other hand, decompressor 7 merit that reclaims, drop into as the power of the 1st compressor 1 is (the theoretical merit that expands and done) * 0.8.Therefore, the required merit of the 2nd compressor 1 ' is ((2 compressors 1,1 ' required theoretical merit) the theoretical merit that ÷ 0.8-expansion is done) * 0.8.Also have, because need import this merit, so if its conversion efficiency is made as 0.35, then (merit that the 2nd compressor 1 ' is required) ÷ 0.35 is the required gross energy of the 2nd compressor 1 ' with the form of power.In addition, this interconversion rate be with oil in the power of upgrading method calculate in the identical value of conversion efficiency of the compression power that reclaims of latent heat that use, that be used for steam.

Here, dimethyl ether is approximately perfect gas, is assumed to adiabatic compression, and-5 ℃ of saturation solubilities of icing in liquefied dimethyl ether down are assumed to 5.4wt%, then for removing deicing, the required drive of native system is 1383kJ/kg-water.

The result can confirm by this reckoning, utilizes deicing system of the present invention, can accomplish deicing with less institute's energy requirement.

Embodiment

Below, describe in more detail with regard to the present invention based on embodiment.In addition, the present invention is not limited to following embodiment.

Embodiment 1 (dehydration test of the wood chip that freezes)

The dry wood chip of the coarse crushing about rugosity 1～3mm, length 1cm is immersed (dry weight 0.9345g in the water; Moistening weight 3.0006g); Put into the glass post of the about 14cc of internal volume, cooling 1 makes it freeze round the clock in freezer afterwards, and it is used for test as 1 batch.

Utilize device shown in Figure 3 with liquefied dimethyl ether (DME) dehydration of purity more than 99% wood chip of the frozen state that makes as stated.

That is,, the liquefaction DME of saturated vapour pressure is filled in the rustless steel container 21 of Fig. 3, extrudes, make it flow through dehydrator 23 with nitrogen to the wood chip of the frozen state in the glass post that is filled in the dehydrator 3 that is equivalent to Fig. 1.Closed container 22 with the sky that accumulates the DME that liquefies reclaims liquefaction DME then.In addition, these devices are all dropped in the ethanol groove 24 that remains in-23 ℃, under the situation that makes wood chip keep freezing under-23 ℃ the temperature, carry out dehydration test.

In addition, the flow of liquefaction DME is per minute 10cc, flows through 10 minutes.In addition, with respect to the dehydration object contain moisture 0.0020661kg, the ratio of the flow 0.01L of liquefaction DME is per minute 4.84L/kg.Water saturation solubility to liquefaction DME under-19.45 ℃ is 4.3wt%, and required DME is 23.3g with saturated concentration dissolving 1g water.

After processed finishes, closed container 22 is taken out from device, open the valve of closed container 22 at normal temperatures, make the DME evaporation, by this with DME and separated form water.After the DME evaporation, with the moisture draining of the bottom that residues in closed container 22.

After processed finishes, the weight (decrement) that reduce weight and dehydration back weight, processed front and back before the dehydration of mensuration wood chip and the weight of draining.The result is as shown in table 1.

Table 1

Weight (g) before the dehydration	3.0006
		Dehydration back weight (g)	1.8932
Decrement (g)	1.1074
		Displaced weight (g)	1.0334

Can know by table 1, the weight of the wood chip after the processing with handle before compare remarkable minimizing.In addition, the wood chip after the processing is the center dehydration with the post left side as the inflow entrance of liquefaction DME, and on the other hand, is in the state that keeps moisture on the post right side as the outlet of liquefaction DME.This be because; DME flows through in the process of wood chip in liquefaction; The moisture stripping of the wood chip that will freeze needs the time, and at the initial stage of handling, and the liquefaction DME that has lost water separation capability by water saturation, in the post left side flows into the post right side; Carried out after the dehydration in post left side, the dehydration on post right side just begins.

Can confirm thus, utilize the present invention, can be at short notice, under temperature below freezing, easily from moisture (containing ice) wood chip of frozen state, remove a large amount of moisture that freezes.

Embodiment 2 (dehydration test of the coal that freezes)

Stalk charcoal (Indonesia produce ub-bituminous coal) is accumulated in the bottom under the state of fresh water, humidity 100% and left standstill 1 year; Obtain coal (moistening weight 2.397g); After this stalk charcoal is coarse crushing, particle diameter is concentrated on the stalk charcoal of 4～8mm with the sieve of the sieve of 4mm sieve aperture and 8mm sieve aperture.This coal is filled in the part of glass post of internal diameter 11mm, length 42mm (the about 4ml of volume).Fill the silica wool of inertia in the remaining gap of glass post.Cooling 1 makes it freeze round the clock in freezer, and it is used for test as 1 batch.

The device that the coal utilization of the frozen state that makes as stated is shown in Figure 3 is with liquefied dimethyl ether (DME) dehydration of purity more than 99%.

That is,, the liquefaction DME of saturated vapour pressure is filled in the rustless steel container that is equivalent to compressor 21 of Fig. 3, extrudes, make it flow through dehydrator 23 with nitrogen to the coal of the frozen state in the glass post that is filled in the dehydrator 3 that is equivalent to Fig. 1.Closed container 22 with the sky that accumulates the DME that liquefies reclaims liquefaction DME then.In addition, these devices are all dropped in the ethanol groove 24 that remains in-10 ℃, under the situation that makes coal keep freezing under-10 ℃ the temperature, carry out dehydration test.

In addition, the flow of liquefaction DME is per minute 5cc, flows through 13 minutes.In addition, the water saturation solubility to liquefaction DME under-9.5 ℃ is 5.1 weight %, and required DME is 19.6g with saturated concentration dissolving 1g water.

After processed finishes, the weight (decrement) of minimizing and the weight of draining before and after preceding weight of the dehydration of mensuration coal and dehydration back weight, the processed.The result is as shown in table 2.

Table 2

Coal weight (g) before the dehydration	2.397
		Coal weight (g) after the dehydration	1.955
The weight (g) that reduce the dehydration back	0.442
		The weight of draining (g)	0.460

Can know by table 2, the weight of the coal after the processing with handle before compare remarkable minimizing.

Embodiment 3

Among the embodiment 2, except that with the coal before and after the processed respectively 107 ℃ of heating 3 hours down, make the water evaporates, carry out same processed, measure the amount of the moisture of the coal before and after the dehydration test.The result is as shown in table 3.

Table 3

Coal weight (g) before the dehydration	1.921
		Coal weight (g) before the dehydration after 107 ℃ are heated 3 hours down	1.106
The weight (g) that reduce the dehydration back	0.815
		Coal after the dehydration (g)	1.922
Coal weight (g) before the dehydration after 107 ℃ are heated 3 hours down	1.329
		The weight (g) that reduces before and after the heating	0.593

Can be known that by table 3 moisture of coal is (0.815 ÷ 1.921=) 42.4 weight % before the dehydration, and is relative therewith, the moisture of dehydration back coal is (0.593 ÷ 1.922=) 30.9 weight %.In other words, with respect to the combustible component weight 1 (that is, the coal weight after the heating being made as 1 o'clock) of coal, the coal before the dehydration contains the moisture of 0.736 weight, and relative therewith, the coal after the dehydration only contains the moisture of 0.447 weight.Can confirm as stated, utilize the present invention, can be at short notice, under temperature below freezing, easily from the moisture coal of frozen state, remove a large amount of moisture that freezes.

The possibility of utilizing on the industry

As stated, this de-icing method of the present invention can be used for multiplely containing the ice material, no matter be which kind of contains the ice material, can both remove deicing at short notice easily with low power.

Therefore, the present invention is through removing deicing the ice material and make its lightweight from various containing, and make the processing of discarded object, utilize, the utilization of resources of living beings etc. becomes easy.

Claims

1. use the de-icing method of icing material that contains of liquefaction thing; It is characterized in that; Comprise under the condition that makes normal temperature and pressure for the liquefaction thing of the material of gas contacts, makes this to contain ice of icing in the material to be dissolved in this liquefaction thing, to obtain the operation (1) that height contains the liquefaction thing of moisture with containing the ice material, and this height is contained under the condition of the normal temperature and pressure in the liquefaction thing of moisture be the gasification substance of gas, the operation (2) of separating from moisture as gas by this.

2. de-icing method as claimed in claim 1; It is characterized in that; Also comprise with under the condition of the normal temperature and pressure that is separated by gasification in the said operation (2) for the Gas Recovery of the material of gas, make this gas liquefaction, the operation (3) of the thing that obtains liquefying, reuse the liquefaction thing that obtains in this operation (3) in the said operation (1).

3. de-icing method as claimed in claim 1 is characterized in that, is under 25 ℃ and 1 atmospheric pressure, to be the material of gas for the material of gas under the condition of normal temperature and pressure.

4. de-icing method as claimed in claim 1 is characterized in that, is the mixture more than a kind or 2 kinds that is selected from dimethyl ether, ethyl-methyl ether, formaldehyde, ketenes and acetaldehyde for the material of gas under the condition of normal temperature and pressure.

5. de-icing method as claimed in claim 1 is characterized in that, containing the ice material is coal, food, porous body, biology, biomass material or medicinal compounds.

6. de-icing method as claimed in claim 1 is characterized in that, the contact in the said operation (1) makes said liquefaction thing contain ice material convection current and contact and carry out with said.

7. de-icing method as claimed in claim 1 is characterized in that, is 0.1L/kg～1000L/kg with the amount that contains the liquefaction thing that contact of ice material with respect to containing the unit moisture conversion amount of icing the ice that contains in the material in the said operation (1).

8. de-icing method as claimed in claim 1 is characterized in that, in-50 ℃～25 ℃ temperature range, carries out a series of deicing operation.

9. the material of having removed ice that obtains through each described de-icing method in the claim 1～8.

10. contain the deicing system of icing material; It is characterized in that; By with the compressor of gas pressurized that under the condition of normal temperature and pressure is the material of gas; With the pressurization said gas condense become liquefaction thing condenser; Make said liquefaction thing contact, dissolve this and contain the ice of ice in the material, become the dehydrator that height contains the liquefaction thing of moisture, make this height contain under the condition of the normal temperature and pressure in the liquefaction thing of moisture evaporimeter, the separator series connection binding that the gas of the said material of gasification is separated with moisture and constituting for the gasification substance of gas with containing the ice material.

11. deicing system as claimed in claim 10 is characterized in that, is connected through heat exchanger with said evaporimeter by said condenser to constitute.

12. deicing system as claimed in claim 10; It is characterized in that; Also constitute by the decompressor binding of connecting with said compressor; The merit that this decompressor is done to external world is recovered, and this merit is used as the structure that the part of the power of said compressor drops into, and this decompressor is used to make under the condition of normal temperature and pressure of said gasification the gas for the material of gas to expand.

13. deicing system as claimed in claim 10 is characterized in that, said compressor, condenser, dehydrator, evaporimeter and decompressor form the loop, make under the condition of normal temperature and pressure to circulate in this loop for the material of gas.

14. deicing system as claimed in claim 10; It is characterized in that; Constituting degassing tower and said separator links; The Gas Recovery of the degassing is back to the structure in the loop, and this degassing tower is used for the gas for the material of gas under the condition of the normal temperature and pressure that uses said separator separates is outgased and recovery.

15. deicing system as claimed in claim 10 is characterized in that, said dehydrator makes said liquefaction thing contain ice material convection current and contact with said.