CN101842140A - The dewatering system of hydrous matter and dewatering - Google Patents

Abstract

The dewatering system of hydrous matter of the present invention comprises having the dewatering system well that makes the contact site that dimethyl ether contacts with hydrous matter, respectively with described dewatering system with well be connected, at the dimethyl ether ascending pipe and the hydrous matter ascending pipe of contact site opening, at the dimethyl ether hydrous matter outlet of the dimethyl ether hydrous matter of described dewatering system with the summary upper end opening of the contact site of well, after being used to discharge contact, the dimethyl ether hydrous matter separator that is connected, dimethyl ether is separated with hydrous matter with well by described dimethyl ether hydrous matter outlet and dewatering system.

Description

The dewatering system of hydrous matter and dewatering

Technical field

The present invention relates to dewatering system, that is, be used for the dewatering system of the dehydration of the low-yield hydrous matter that has used dimethyl ether effectively and adopt the dewatering of this system.

Background technology

Known various hydrous matters from its angle consideration that utilizes and improve quality again, have been developed the processing method of various hydrous matters at present.

For example, as the processing method of the sewage sludge that produces from sewer, generally be that burning and landfill burning ash is disposed.But, must the appropriate combination concentration during burning, processed, the dry processing carry out preliminary treatment, difficult treatment to the large quantity of moisture in the sewage sludge.In addition, sewage sludge is discharged in a large number, but there is the limit in setting up of landfill yard, so also wish to be useful on the technology of utilizing again.

On the other hand, as one of dehydration technique, in the modification method in the oil (for example with reference to patent documentation 1), coal is assumed to the solid that contains moisture, is carrying out the water evaporates that heat treated makes the solid that contains moisture more than 150 ℃ by the solid that contains moisture to slurryization in oil.Since by will be under operating temperature hardly can the evaporated liquid shape oil as heat medium, only water optionally evaporates, so steam can be not diluted, the density of the evaporation latent heat that steam had can not descend.Therefore, the modification method is considered to the evaporation latent heat that recycle-water steam is efficiently had in the oil.Especially, about the dehydration of coal, in the existing method, the required energy of modification method is considered to minimum in the oil.Yet, in the oil in the modification method,, need centrifugation or be higher than heating operation under 150 ℃ the temperature for the oil that boiling point is higher than water separates (de-oiling) with coal, so the energy consumption in the de-oiling operation is higher than the energy consumption in the dehydration procedure, the commerce running of still being unrealized real.

Patent documentation 1: the Japan Patent spy opens the 2000-290673 communique

The announcement of invention

The purpose of this invention is to provide and be used for low-yield efficiently with the hydrous matter dehydration method.

The present inventor studies repeatedly in view of above-mentioned purpose, the result is concerned about following phenomenon: also can easily not liquefy to its character setting exacting terms even be the material of gas under the condition of normal temperature and pressure, this liquid absorbs moisture, and gasification and change gas into by liquid (liquefaction thing) easily similarly.In addition, find behind the trial and error,, the various compositions in the hydrous matter can be extracted and separate, thereby finished the present invention by when dimethyl ether contacts with hydrous matter, utilizing the difference of height in the contact tube.

The invention provides following each invention.

[1] dewatering system of hydrous matter, the system is characterized in that, comprise and have the dewatering system well that makes the contact site that the liquid dimethyl ether contacts with hydrous matter, be connected with well with described dewatering system respectively, dimethyl ether ascending pipe and hydrous matter ascending pipe at the entrance side opening of contact site, as described dewatering system summary upper end opening with the outlet side of the contact site of well, be used to discharge the dimethyl ether hydrous matter outlet of the dimethyl ether hydrous matter after the contact, be connected with well with dewatering system by described dimethyl ether hydrous matter outlet, the dimethyl ether hydrous matter separator that dimethyl ether is separated with hydrous matter.

[2] dewatering system of the hydrous matter of [1] record, with embedding on the summary of well, each pipe and dewatering system are with formation double pipe between the well and at described contact site opening from described dewatering system for described dimethyl ether ascending pipe and/or described hydrous matter ascending pipe.

[3] dewatering system of [1] or [2] record, described dewatering system is embedded in underground with at least a portion of well.

[4] dewatering system of each record in [1]～[3], also comprise the compressor that is used for the Compressed Gas dimethyl ether and injects, be used to cool off that compressed dimethyl ether makes its condensation and with the condenser of dimethyl ether liquefaction, connect described compressor, condenser and described separator and make the dimethyl ether carrier pipe of dimethyl ether circulation.

[5] dewatering system of hydrous matter, the system is characterized in that, the dimethyl ether feed unit that comprises the feed fluid dimethyl ether, supply with the hydrous matter feed unit of hydrous matter, will be by the described hydrous matter of described hydrous matter feed unit supply and the contact site that mixes by the described dimethyl ether pressurization that described dimethyl ether feed unit is supplied with, be connected with this contact site, the dehydrator of the moisture absorption in the described hydrous matter being gone into described dimethyl ether and carrying out the dehydration of described hydrous matter, the liquid cyclone separator (cyclone) that the liquid, aqueous dimethyl ether that has absorbed the moisture of discharging from this dehydrator is separated with described hydrous matter, with the described dimethyl ether gasification in the described liquid, aqueous dimethyl ether, the evaporator that described dimethyl ether is separated with moisture in the described dimethyl ether, the dimethyl ether carrier pipe that the gas dimethyl ether of the gasification in the described evaporator is derived, be connected with described dimethyl ether carrier pipe, be used for presser unit to the dimethyl ether pressurization of described gasification, be used for the dimethyl ether condenser pipe of condensation through the dimethyl ether of this presser unit pressurization, be used to preserve the condensation liquid bath of condensed dimethyl ether, condensed dimethyl ether delivered to the liquid dimethyl ether carrier pipe of the groove of preserving the liquid dimethyl ether that is supplied to described contact site.

[6] dewatering system of [5] record, described dewatering system are set on the ground with well or are underground.

[7] dewatering system of each record in [1]～[6], described hydrous matter is a coal.

[8] dewatering of hydrous matter the method is characterized in that, adopts the dewatering system of each record in [1]～[6].

Utilize the present invention can the low-yield dehydration of carrying out hydrous matter effectively.

The simple declaration of accompanying drawing

Fig. 1 is the ideograph of the embodiment 1 of expression dewatering system of the present invention.

Fig. 2 is the ideograph of the embodiment 2 of expression dewatering system of the present invention.

Fig. 3 is the ideograph of the embodiment 3 of expression dewatering system of the present invention.

Fig. 4 is the figure of an example of the separation process of expression separator.

Fig. 5 is the figure of another example of the separation process of expression separator.

Fig. 6 is the figure of the another example of the separation process of expression separator.

Fig. 7 is the figure of an example of the injection mode of expression brown coal injection device.

Fig. 8 is the figure of another example of the injection mode of expression brown coal injection device.

Fig. 9 is the structural representation of formation of the dewatering system of schematic representation embodiments of the invention 4.

Figure 10 is the stereogram of formation of the dewatering system of schematic representation embodiments of the invention 4.

Symbol description: 11,21 dewatering system wells, 11A, 21A, 11A "; 73 contact sites; 12; 22; 32; 71DME ascending pipe, 221A, the pipe inner opening portion of 221BDME ascending pipe, 13,23A, 23B, 33 hydrous matter inlets, 131,231,331,431 hydrous matter ascending pipes, 132,232,332 brown coal injection devices, 133,233,333 hoppers, 234 feeding screws, 14,24,92DME-hydrous matter outlet, 15,25DME-hydrous matter separator, 41 compression condensation devices, 42, the 77DME carrier pipe, 43, the 88DME groove, 51,61 pressurized tank, 52,62,58 discharge pipes, 53,63,55,56,59,65,66 valves, 54,64 ascending pipes, 57,67 lids, 68 nitrogen high-pressure troughs, 69 compressors, 70 dewatering systems, 72 brown coal feed units, 74 dehydrators, the 74a bottom, 74b upper end, 75 liquid cyclone separators, 76 evaporators, 78,109 pressurization blowers (presser unit), 79DME condenser pipe, 80 condensation liquid baths, 81 medial launders, 82 liquid D ME supply pipes, 83,85 conveyer belts, 84 brown coal storagetanks, 86 brown coal inject groove, 87,97,112 feeding screws, 89DME injects arm, 90DME-hydrous matter supply passageway, 91DME-hydrous matter inflow entrance, 93DME-hydrous matter drain passageway, 94 moisture DME separate paths, 95 brown coal derived channels, 96 brown coal take out groove, 98 dehydration brown coal conveyer belts, 99 liquid D ME recovery tubes, 100 steam pressure regulating tanks, 101 separate water circulation path, the 102DME supply pipe, 103,104 cooling waters, 105 fens dried up delivery lines, 106 filters, 107 final gas separating tanks, 108,110,111 gas DME reclaim path, and 100 separate water circulation path, 114 operation boards, 123 buildings.

The best mode that carries out an invention

Dewatering system of the present invention is the system that utilizes dimethyl ether (being designated hereinafter simply as DME) that hydrous matter is dewatered.

The boiling point of DME under 1 atmospheric pressure is-24.8 ℃, is gas under-10 ℃～50 ℃ atmospheric pressure.The manufacture method of DME and manufacturing installation are for example at Japanese patent laid-open 11-130714 communique efficiently, Japanese patent laid-open 10-195009 communique, Japanese patent laid-open 10-195008 communique, Japanese patent laid-open 10-182535 number～spy opens each communique of flat 10-182527 number, Japanese patent laid-open 09-309850 number～spy opens each communique of flat 09-309852 number, Japanese patent laid-open 09-286754 communique, Japanese patent laid-open 09-173863 communique, Japanese patent laid-open 09-173848 communique, disclose to some extent in the Japanese patent laid-open 09-173845 communique etc., can obtain at an easy rate according to these revealed technology.

In addition, DME also can use for the combinations of substances of gas down with other normal temperature and pressure conditions.Be the material of gas down as normal temperature and pressure conditions, can exemplify B ether, formaldehyde, ketenes, acetaldehyde, butane, propane etc., they can use a kind also can mix use more than 2 kinds separately.

Processing object of the present invention is a hydrous matter.Hydrous matter is meant the material that contains moisture." moisture " is meant the water or the aqueous solution, is not particularly limited its composition, origin etc.Can exemplify for example water, blood, body fluid, sewage etc." contain " and be meant that described moisture is contained in some material.As some material, all unqualified for its size, composition, but be preferably formed as form into solid or pulpous state as hydrous matter.The form that exists for the moisture in the hydrous matter is not particularly limited, can be by the moisture of inclusion in inside, also can be present between outer surface, solid particulate, according to circumstances at the moisture of the pore of solids inboard.In addition, be not particularly limited, be generally 20～98 weight %, be preferably 35～85 weight % for the moisture content of hydrous matter.These hydrous matters can be the materials that comprises moisture, also can be the materials of having implemented in advance after other the processed.

As this hydrous matter, can exemplify coal, high absorber (paper nappy after the use, physiological articles etc.), biological (weeds, bouquet, jellyfish etc.), biomass material (wood chip, leftovers, garbage, other so-called discarded object), soil, sewage sludge (comprising dewatered cake) etc.Wherein, by application, can obtain high-quality coal effectively to coal.Coal can be the coal after the directly exploitation, also can be (for example to carry out certain processed again, the dewatering (with reference to Japanese patent laid-open 10-338653 communique) of modification method in the oil (opening the 2000-290673 communique with reference to the Japan Patent spy), employing dry inert gas) coal that gets, they can be as object of the present invention.The moisture content of coal is generally 20～80 weight %, better is 35～67 weight %.As the kind of coal, can exemplify ub-bituminous coal, brown coal, bavin coal, mud coal.

This of mine pit is intrasystem is arranged at underground position by utilizing excavator to excavate to have formed with well for dewatering system, that is, DME ascending pipe, hydrous matter ascending pipe and contact site constitute.Contact site is the position that DME is contacted with hydrous matter.By in contact site, making contacting of DME and hydrous matter, make the moisture in the hydrous matter be dissolved in DME, form moisture DME (being dissolved in the liquid of the state of DME from the moisture of hydrous matter).The present invention possesses the dewatering system well of contact site by use, can utilize difference of height the contacting with the low-yield DME of carrying out and hydrous matter effectively in the contact site.

Dewatering system for example is when being similar to U font shape, preferably to be made of following zone (1)～(3) with well.

(1) zone of stretching upward vertical or inside outside curve the time.

(2) level or the slightly zone of inclination.

(3) zone of stretching upward vertical or inside outside curve the time.

Obtain DME and keep aqueous required static pressure (being generally 6 atmospheric pressure～15 atmospheric pressure) in zone (1), if therefore import DME and hydrous matter, then liquid is sent to zone (2).Then, in zone (2), promote the dehydration that contacts of liquid D ME and hydrous matter, adjust time of contact (be 15 minutes～30 minutes time of contact usually), carry out contacting/dewatering of liquid D ME and hydrous matter.Because of pressure descends, the moisture DME gasification of few part produces gas DME in zone (3), and the buoyancy that is produced by this gas DME obtains climbing power, and moisture DME (liquid), a spot of gas DME, dehydration hydrous matter rise, and are discharged from from outlet.The degree of depth that each is regional and size are preferably according to being enough to keep pressure, the temperature conditions of DME liquefaction to set.The size in particularly described zone (2) according to the moisture content that the degree of depth, hydrous matter are set of contact site, pressure, temperature conditions of utilizing its dehydration rate that native system obtains, its injection rate, liquid D ME, liquid, aqueous DME etc. etc. decides.

Dewatering system with the shape of well except be subvertical cylindric, can also be to have skewed (slant well) or the approximate U font shape at inclination angle arbitrarily with respect to vertical direction.Wherein, from being easy to regulate the time of contact of liquid DME and hydrous matter or the angle consideration of dewatering time, be preferably approximate U font shape.

Dewatering system with well can be arranged at underground, on the ground, in the water, but preferably at least its major part be embedded in underground.Suppose when being arranged on the ground, be assembled with the well shape pipe of height 5～70m, but equipment such as the large-scale pillar that must have in order to ensure stability.On the other hand, when being arranged at underground (setting up excavator, steel pipe, equipment etc.), can utilize static pressure to guarantee to keep dewatering system with the pressure in the well, and can utilize the buoyancy that the DME characteristic brings, the miniaturization that climbing power realizes equipment.In addition, except can utilizing the existing technology that digs a well, pipe laying technology, also can realize the be provided with stabilisation of dewatering system when being provided with well.In addition, can expect the free-falling that gravity brings during the injection of DME and hydrous matter, and the climbing power that can utilize when rising the gasification of the moisture DME (liquid) of minute quantity to produce, therefore can low cost implement dehydration.Consider that from equal angles simple to operate dewatering system is with being preferably disposed on the ground with the connecting portion of DME ascending pipe, hydrous matter ascending pipe and the peristome of DME-hydrous matter outlet in the well.Subvertical columned dewatering system is arranged at when underground with well, and is same with being provided with of common peupendicular hole, inserts steel pipe (sleeve pipe) after excavation.On the other hand, the dewatering system of approximate U font shape is arranged at when underground with well, uses tiltable to excavate the device of (directional drilling (directional drilling)) or use pipe laying to excavate with excavator sleeve pipe is set.

Dewatering system has contact site with the inside of well.Contact site is the zone that liquid D ME contacts with hydrous matter, is that peristome from dimethyl ether ascending pipe described later and hydrous matter ascending pipe is to the space between the dimethyl ether hydrous matter outlet.Therefore, dewatering system forms contact site with at least a portion in the whole or downstream of well.

The DME-hydrous matter back of rising arrives outlet described later and is discharged from contact site, but in order to improve the flowability of the material after moisture DME and the dehydration, can insert and stir nozzle in the pipe or ESP (electronic submersible pump), feeding screw are set.In addition, from the water absorption that improves liquid D ME, promote gasification, give climbing power, improve the water imbibition of liquid D ME, the angle that improves the saturated vapour pressure of DME is considered, also can heating apparatus such as steam/hot-water line, thermal source heater, gas DME press-in device (gas lift unit) etc. be set in well at dewatering system.

Described dewatering system is provided with well DME is conducted to the DME ascending pipe in the contact site and hydrous matter is conducted to hydrous matter ascending pipe in the contact site.

The DME ascending pipe can be at dewatering system summary upper end (being generally topmost) opening with well.On the other hand, also can be to embed with aboveground end from dewatering system, be that outer tube forms double pipe and at described dewatering system well inner opening with the dewatering system well.Under the latter event, can import DME and hydrous matter respectively.The DME that is injected into from the DME ascending pipe can be that gaseous state (gas) also can be a liquid condition, but can be liquid condition at the peristome of DME ascending pipe at least.

The hydrous matter ascending pipe can be at dewatering system summary upper end (being generally topmost) opening with well.

On the other hand, the hydrous matter ascending pipe also can embed from the summary upper end of well, is outer tube formation double pipe and the inside opening of using well at described dewatering system with the dewatering system well.In this case, better be that the DME ascending pipe also is inserted into dewatering system with in the well as mentioned above, each pipe forms double pipe with respect to dewatering system with well.By this, the hydrous matter ascending pipe forms double pipe, thereby can import DME and hydrous matter respectively.The position of the peristome of hydrous matter ascending pipe can be as illustrated embodiment described later, at dewatering system with near the bottommost of well or its, also can be the mid portion of no show bottom, suitably decisions such as the shape of the pressure in the time of can injecting according to hydrous matter, temperature conditions, dewatering system usefulness well or size.Dewatering system is subvertical when cylindric with being shaped as of well, hydrous matter ascending pipe and DME ascending pipe are inserted into dewatering system with in the well, each pipe forms under the situation of double pipe with well with respect to dewatering system, and the peristome of hydrous matter ascending pipe preferably is positioned at the position higher than the peristome of DME ascending pipe (difference of height that has 5～10m usually).Consider that from promoting the angle in the hydrous matter ascending pipe opening that is preferably in the hydrous matter ascending pipe is provided with feeding screw.

The injection of hydrous matter can be finished by being pressed into (normal pressure is pressed into, and is pressed into).That is, the pressure of the injection mode of hydrous matter when injecting the hydrous matter injection device is divided into that normal pressure is pressed into and pressurization is pressed into, and the present invention can adopt any mode.In addition, hydrous matter also can directly be imported into from the hydrous matter ascending pipe, but also can implement preliminary treatment.Preliminary treatment can and be pressed into decision such as condition by the kind of hydrous matter, can suitably select to be easy to be dissolved in the processing that DME is a purpose, for example, can exemplify pulverizing, utilize the slurryization of DME etc.During injection, can implement normal pressure be pressed into, pressurize in being pressed into any, can suitably select for use 1 or several can implement pretreated hydrous matter injection device as required.

In the dewatering system of the present invention, in dewatering, DME-hydrous matter outlet is set in addition also except described DME ascending pipe and hydrous matter ascending pipe with well.DME-hydrous matter discharge pipe at described dewatering system with well (contact site) slightly upper end open, the peristome of DME-hydrous matter discharge after will contact.The DME-hydrous matter is meant the DME and handled thing after hydrous matter contacts in the contact site among the present invention, is that the hydrous matter that separated wholly or in part of DME (DME gas and liquid D ME), moisture DME (being dissolved in the liquid of the state of DME from the moisture of hydrous matter), moisture, the moisture that separates from moisture DME (divide dried up.Dissolve in the water of DME because of the variation of saturation solubility, the free moisture of gasification of DME) aggregate.The position of the composition of DME-hydrous matter in contact site changes, but is principal component with moisture DME with the hydrous matter that moisture is partly separated usually when arriving outlet, comprises the DME gas and the moisture of denier.DME-hydrous matter outlet and dewatering system are positioned at dewatering system with near the upper end of well with the link position of well.When the dewatering system well is subvertical columned shape, can make this link position be positioned at the part that be not connected with hydrous matter inlet and DME ascending pipe of dewatering system with the upper end of well.During for the shape of approximate U font, 2 upper ends that can make this link position be arranged in the U word do not have a side's of hydrous matter inlet and DME ascending pipe upper end.DME-hydrous matter outlet can be at the direct opening of separator.

The optimum position relation of tube connector portion and hydrous matter ascending pipe, DME ascending pipe and DME-hydrous matter outlet is different, as described below with the shape of well because of dewatering system.

The dewatering system well is when being similar to U font shape, to make the DME ascending pipe and the hydrous matter ascending pipe that form so-called inlet be connected in a upper end near side (ns), forms the DME-hydrous matter outlet of so-called outlet in other end setting.The peristome of hydrous matter ascending pipe at dewatering system with the summary of well upper end (being generally topmost) or dewatering system with well inside opening (the hydrous matter ascending pipe forms double pipe at dewatering system in well).When the hydrous matter ascending pipe was used the summary upper end open of well at dewatering system, dewatering system was whole well with the contact site in the well.In addition, the hydrous matter ascending pipe forms and when the well inside opening, contact site is the downstream part of dewatering system with the peristome of well.The hydrous matter ascending pipe forms in the zone (that is, the upstream region of contact site) of double pipe, and the interior pipe of double pipe and the part between outer tube are formed for the stream that DME injects.

On the other hand, the dewatering system well is subvertical when cylindric, the DME ascending pipe is connected in the summary upper end of described dewatering system with well, hydrous matter ascending pipe and DME ascending pipe enter with the summary upper end of well and form double pipe with dewatering system with well from dewatering system, and hydrous matter inlet and DME ascending pipe are at the contact site inside opening.Usually the hydrous matter ascending pipe is at the upper opening of the peristome of DME ascending pipe.On the other hand, though described DME-hydrous matter outlet is positioned at the upper end equally, the regional opening beyond the connecting portion of each ascending pipe.The part of dewatering system is meant the hydrous matter ascending pipe with the contact site in the well peristome till the DME-hydrous matter outlet, that is, dewatering system is with the zone beyond hydrous matter ascending pipe in the well and the DME ascending pipe.

The state (gas or liquid) that flows into the DME in the DME ascending pipe is different because of temperature and pressure in managing, is liquid D ME in the peristome of DME ascending pipe usually.

DME-hydrous matter separator is connected with well with dewatering system at described DME-hydrous matter outlet, to DME, separate from the moisture of hydrous matter and the hydrous matter that seized moisture.Separate object is the DME-hydrous matter that obtains from DME-hydrous matter outlet, comprises the DME gas and the moisture of moisture DME, dehydration hydrous matter and denier usually.Separation can be carried out also can carrying out near the normal pressure or under the decompression under pressurized conditions.Be meant the above pressure condition of saturated vapour pressure of the liquid condition that can keep DME under the pressurized conditions, (about 18 ℃ of temperature) is generally 5.5～12 atmospheric pressure, preferred 6～10 atmospheric pressure under the normal temperature.In addition, be meant the following pressure condition of saturated vapour pressure of DME gasification near the normal pressure, represent about 1 atmospheric pressure preferred 0.8～3 atmospheric pressure.In addition, the influence that not only is under pressure of the gasification-liquefaction of DME, temperature is also very big to its influence, therefore is difficult to the number range of regulation air pressure.

With the separator is example, comprises net, cyclone separator, centrifugal separator, the decompressor that is used for hurried decompression, heater, gas separator etc., can use the combination more than a kind or 2 kinds in these concrete examples.Cyclone separator, decompressor, heater, gas separator are mainly used in the gas-liquid separation of DME and in addition material, and net, centrifugal separator are useful for the Separation of Solid and Liquid of hydrous matter and water.

In addition, can be provided for flowing to the flow control valve of Flow-rate adjustment of the DME-hydrous matter of DME-hydrous matter separator.In the time of a little less than the pressure of DME-hydrous matter when separator flows into, the withstand voltage pump of non-tight etc. can be set.As the withstand voltage pump of non-tight, be preferably no leakage structure.As the withstand voltage pump of this non-tight, but illustration is for example with Japan's day machine dress (Ri Machine dress) Co., Ltd.'s system " HN21A type " (trade name: discharge-amount 10m ³/ hour, about lift (Japanese: Yang journey) 20m) be the various products of representative.In addition, when implementing to maximize, also can use and can tackle discharge-amount is 7～800m ³/ hour, lift is the withstand voltage pump of non-tight of the condition of 5～600m.

The average diameter of net is preferably less than the average diameter of hydrous matter.The condition of cyclone separator can suitably be regulated, and is difficult to stipulate with number range.The pressure condition of decompressor as previously mentioned.In addition, when using heater,, so long as get final product, be generally 0～50 ℃, particularly preferably about 10～40 ℃ near the temperature of normal temperature though temperature is different because of pressure.

Centrifugal separator can be used for separating of Separation of Solid and Liquid (hydrous matter and water).The mode of centrifugation can adopt any in continous way and the batch (-type), but considers from the angle of separative efficiency, preferred batch (-type).Condition when adopting batch (-type) can suitably be determined by the weight of service machine and processing object, when for example using neat rattan (Hitoshi rattan) centrifuge Industrial Co., Ltd system " HB-55 " (trade name), can carry out 1 hour 5 times (intermittently), 1 time 10 minutes 400kg/ Separation of Solid and Liquid intermittently.

The example of the separation circuit when hydrous matter is brown coal is as described below.

(example 1: normal pressure separates (solid-liquid-gas separation-Separation of Solid and Liquid)) [Fig. 4]

The DME-hydrous matter that makes adding more than the saturated vapour pressure depress (about 6 atmospheric pressure under the normal temperature) by hurried decompression returns to normal pressure (1 atmospheric pressure), separate DME gas (gas separation).Then, dehydration brown coal and water are carried out centrifugation (Separation of Solid and Liquid).

(example 2: pressurization separates) [Fig. 5]

When keeping pressurized conditions, depressed that () the DME-hydrous matter liquid cyclone separator of packing into for example, about 6 atmospheric pressure under the normal temperature is separated into moisture DME and remaining dehydration brown coal and is attached with the dehydration brown coal of water adding more than the saturated vapour pressure.With pump the withstand voltage pump of non-tight etc. is set as spraying fully the time at the DME-hydrous matter inadequately to the injection pressure of liquid cyclone separator, adjusts the discharge-amount and the lift of pump, keep pressurized conditions.Separation rate when adopting the liquid cyclone separator is about 90%.Moisture DME and remaining dehydration brown coal are separated into DME gas and water through to a certain degree reducing pressure below saturated vapour pressure (for example, about 5 atmospheric pressure under the normal temperature) by gas separator.Water is refining by separation and the precipitate and separate of utilizing net, picks up remaining dehydration brown coal.The dehydration brown coal that are attached with water are decompressed to about 1 atmospheric pressure by hurried decompression, have separated behind the DME gas to be separated into water and dehydration brown coal by centrifugation.The DME gas that reclaims boosts and is connected with the DME carrier pipe, mixes with the DME gas that separates recovery by the decompression of liquid cyclone separator, can be used for the dehydration of dewatering system with well once more.

In addition, the destilling tower as reclaiming DME also can use inside to have the destilling tower of heat exchange condenser.

(example 3: normal pressure separates) [Fig. 6]

The DME-hydrous matter that makes adding more than the saturated vapour pressure depress (about 6 atmospheric pressure under the normal temperature) by hurried decompression returns to normal pressure (1 atmospheric pressure), isolates DME gas (gas separation) from brown coal and water.Net separation then, be separated into dehydration brown coal and water.Carry out centrifugation for the dehydration brown coal, be separated into dehydration brown coal and water.On the other hand, utilize gas separator that water and DME gas are carried out gas-liquid separation.

Also can be equipped with compressor, condenser in the system of the present invention.In this case, utilize the DME carrier pipe to connect compressor, condenser, separator.By equipping these equipment, the gasification DME liquefaction that utilizes separator to separate can be used further to the dehydration of dewatering system with well.

The DME carrier pipe is to connect compressor, condenser and separator, makes the pipe of DME circulation in system.

Compressor is the position that is used to compress DME.Condenser is to be used for that DME after the cooled compressed makes its condensation and with the position of DME liquefaction.Described DME ascending pipe is connected in condenser.By this, the DME by condenser liquefaction can be imported the dewatering system well.

If with dewatering system of the present invention for example brown coal as hydrous matter are dewatered, then in dewatering system is used the contact site of well, in variant position (degree of depth) following reaction (with reference to Fig. 1～3) takes place." degree of depth " is meant that from the degree of depth of dewatering system till with the upper end of well to deep be 100m, and the degree of depth of hydrous matter ascending pipe peristome is 80m during for the vertical-type of Fig. 1, and the degree of depth is 100m during for the approximate U font of Fig. 2.In addition, DME saturated vapour pressure and saturation solubility Yin Wendu and other environmental condition and different.Therefore, even the water saturation solubility of DME is 7～8%, the DME temperature is that 20～40 ℃, DME proportion are that following territorial classification also all is conventional classification, can not limit the present invention under 0.661 the situation.

(I) liquid D ME zone (degree of depth 0～100m and the degree of depth 80～100m (Fig. 2) when being vertical-type, the degree of depth 0～100m (Fig. 1) during for the U font do not exist during for the U font of Fig. 3)

The liquid D ME that is imported by the DME ascending pipe is in the zone of underground DME individualism with till brown coal mix.DME exists as liquid usually.Liquid D ME is utilizing gravity to utilize continuous flow to be moved upward when the bottom direction moves.

(II) the liquid D ME layer retention areas (degree of depth 5～100m) of brown coal

The zone that brown coal and DME mix and dewater.The part of liquid D ME becomes moisture DME (liquid, aqueous DME).DME utilizes continuous flow to be pushed to the top.

(III) zone (degree of depth 5～50m) that finishes of the dehydrationization of brown coal

The reach capacity zone of state of the moisture absorption amount of DME.Moisture DME accounts for major part, has little or no the state of liquid D ME.DME utilizes continuous flow to be pushed to the top.

(IV) the gasification zone (degree of depth 0～5m) of DME

Descend because of the rising of moisture DME causes pressure, utilize the DME gasification of this pressure decline minute quantity and the zone of further giving buoyancy.Exist because moisture DME and DME gas mix, therefore the pressure at the peristome of the pressure ratio DME of hydrous matter outlet ascending pipe is low.DME utilizes buoyancy to be pushed to the top.Once being dissolved in the water of DME separates by the variation of DME saturation solubility, the gasification of DME.DME saturation solubility, saturated vapour pressure are for responsive to temperature, and therefore great changes have taken place with temperature, pressure condition for the degree of depth in the above territorial classification.

Among the present invention, can with well and other each position the temperature measuring sensor be set at dewatering system.By this, but on-line monitoring adjust operation and regulate.

Embodiment 1

With reference to accompanying drawing the dewatering system of the hydrous matter of embodiments of the invention 1 and the hydrous matter dewatering of use dewatering system are described.

Fig. 1 is the structural representation of structure of the dewatering system of schematic representation embodiments of the invention 1.

As shown in Figure 1, the dewatering system of embodiment 1 is to have the dewatering system of U font dewatering system with well.

That is, dewatering system is the U word shape with well 11.Observe with the side of well 11 from U font dewatering system, DME ascending pipe 12 is connected in dewatering system well 11 from right upper portion.In addition, similarly from upper right side, hydrous matter ascending pipe 131 enters from the upper end of dewatering system with well 11, has peristome 13 in the bottom.Use the zone (the interior pipe of double pipe and the part between the outer tube) beyond the shared zone of hydrous matter ascending pipe in the well 11 at dewatering system, that is, the zone till the part 121 of turning back of U word shape is formed for the stream that DME injects.Brown coal injection device 132 and hopper 133 are connected with hydrous matter ascending pipe 131.On the other hand, DME-hydrous matter outlet 14 is at the left upper end opening of dewatering system with well 11, at DME-hydrous matter separator 15 place's openings.Zone till dewatering system is with the DME-hydrous matter outlet 14 in the peristome downstream of the DME ascending pipe of well 11 forms contact site 11A.

In the dewatering system of present embodiment, U font dewatering system is embedded in underground with the major part of well 11, but U word shape front end and coupling part separator 15, is positioned on the ground with the coupling part of brown coal injection device 132 and with the coupling part of DME ascending pipe 12.In addition, also be provided with compression condensation device 41 on the ground, be connected with separator 15 by DME carrier pipe 42.Compression condensation device 41 is connected with DME ascending pipe 12.The DME groove 88 that stores liquid D ME is situated between and is connected with DME ascending pipe 12 with valve.Therefore, being admitted to dewatering system from DME ascending pipe 12 is through the liquid D ME of circulation or fill up the new liquid D ME that replenishes from DME groove 88 of loss in dehydration compression condensation device 41 with the DME of well 11.

The pressure of brown coal injection device 132 when injecting brown coal to injection device adopts normal pressure to be pressed into the device that mode or pressurization are pressed into mode.When adopting normal pressure to be pressed into, can will inject after the brown coal slurryization.Can use screw pump pump, compressor, feed appliances etc. such as (モ-ノ Port Application プ) under the situations such as the power that is pressed into is more weak as required.As pump, cooperate the checking scale of device of the present invention, can utilize screw pump (Hyoao Equipment Co., Ltd.'s system " 2NE30 type " (trade name: discharge-amount 0.43～3m ³/ hour, pressure 8 atmospheric pressure spue), " 2NE150 type " (trade name: discharge-amount 18.5～139m ³/ hour) etc.).In addition, also more large-scale pump can be set as required.On the other hand, adopt when being pressed into mode, can exemplify the situation (Fig. 7) of a) utilizing liquid D ME, b) utilize the situation (Fig. 8) of gases such as nitrogen.

When a) utilizing the pressurization of liquid D ME to be pressed into (Fig. 7), the lid 57 that (1) opens pressurized tank injects pressurized tank 51 with brown coal.Then, (2) close the lid 57 of pressurized tank, and opening installation discharges the air in the pressurized tank 51 in valve 53a, 53b and the 53c of discharge pipe 52, is reduced pressure in groove inside.(3) shut off valve 53a, 53b and 53c open valve 55a and 55b between pressurized tank 51 and the ascending pipe 54, utilize ascending pipe 54 that liquid D ME is injected in the pressurized tank 51.In pressurized tank 51, realize slurryization by these operation brown coal.(4) shut off valve 55a and 55b open pressurized tank 51 and dewatering system with the valve between the well 11 56 (being closed) in (1)～(3), make the brown coal of slurryization fall into hydrous matter ascending pipe 13 (dewatering system well 11).Because liquid D ME is received in dewatering system with in the well 11, so brown coal utilize gravity and proportion to fall into the hydrous matter ascending pipe, and fall into the dewatering system well at this point.Here, when the power that is pressed into is more weak, can use feeding screw.(5) inject end back shut off valve 56 at once, open valve 59a, 59b, the liquid D ME in the pressurized tank 51 are discharged from discharge pipe 58.(6) then, open valve 53a, 53b and 53d pressurized tank 51 inside are vacuumized, the gas DME that remains in the groove is sent and discharges from discharge pipe 52.Begin to repeat this operation from (1) as required.

When b) utilizing gases such as nitrogen to be pressed into (Fig. 8), the lid 67 that (1) opens pressurized tank injects pressurized tank 61 with brown coal.Then, (2) close the lid 67 of pressurized tank, and opening installation discharges the air in the pressurized tank 61 in the valve 63a and the 63b of discharge pipe 62, is reduced pressure in groove inside.(3) shut off valve 63a and 63b open valve 65a, 65b and 65c between pressurized tank 61 and the ascending pipe 64a, utilize ascending pipe 64 that nitrogen is injected in the pressurized tank 61 from nitrogen high-pressure trough 68.(4) shut off valve 65, open pressurized tank 61 and dewatering system with the valve between the well 11 66 (being closed in (1)～(3)), make brown coal fall into hydrous matter ascending pipe 13 (dewatering system well 11).By this operation, brown coal fall into the hydrous matter ascending pipe, and the liquid D ME in infiltrating this pipe slurryization takes place or from the water that a part of brown coal are extracted slurryization takes place with the weight of utilizing brown coal.For the brown coal that will fall into the hydrous matter ascending pipe drain in the contact site, the pressure in hydrous matter ascending pipe and the pressurized tank is adjusted.Here, when more weak, also can use feeding screw to the power that is pressed into of contact site.(5) inject end back shut off valve 66 at once, open valve 65a, 65b and 65d, will vacuumize in the pressurized tank 61, send to compressor 69 from the nitrogen that pipe 64b will remain in the groove.The nitrogen that is reclaimed by compressor 69 can be sent to nitrogen high-pressure trough 68 by pipe 64c as required and utilize.Begin to repeat this operation from (1) as required.

These devices can be provided with one or more respectively.A plurality of by being provided with, implement push operation when circulating staggering in each device, can realize being pressed into continuously like this from each device.

Dewatering system when being provided with this pump, can make the content in the pipe rise with in the well 11 electronic submersible pump (not shown) being set as required, delivers to DME-hydrous matter outlet 14 sides.By this, the suction of going up of the DME-hydrous matter in the pipe 11 becomes easily, promotes its conveying to separator 15.In addition, can near the position arbitrarily the DME-hydrous matter outlet 14 hot-water line or gas DME press-in device be set in bottom from contact site 11A.

Separator 15 is the devices that are used for the separation of the mode shown in above-mentioned example 1～3 arbitrary example of implementing.

In the dewatering system of present embodiment, can pressure, temperature measuring be set with sensor (not shown) with well, carry out on-line monitoring from the outside at dewatering system.

The DME in the present embodiment and the mobility status of hydrous matter are described as follows described.

From the DME inlet 121 of DME ascending pipe 12 liquid D ME is conducted to dewatering system with in the well 11, being situated between from brown coal injection device 132 is conducted to the contact site 11A of dewatering system with well 11 with hydrous matter inlet 13 with the brown coal slurry.Liquid D ME only is the DME that is liquefied in compression condensation device 41, or this DME that is liquefied and the liquid D ME that newly replenishes from the DME groove.In contact site 11A, liquid D ME and brown coal are by contacting, and dissolving is contained in the moisture of brown coal, and a part gasifies DME-hydrous matter outlet 14 near and forms gas DME.The DME-hydrous matter that the is discharged from left end of the arrival U word shape in these DME-hydrous matters, that promptly arrive DME-hydrous matter outlet 14 in separator 15, make up adopt hurried decompression, centrifugation, liquid separator etc. adding to depress or normal pressure under separated (with reference to above-mentioned example 1～3).Dehydration brown coal and moisture are discharged from from separator 15, and gas DME is sent to compression condensation device 41 by DME carrier pipe 42, become liquid D ME again and are admitted to dewatering system and circulate with well 11.

Embodiment 2

With reference to Fig. 2 the dewatering system of the hydrous matter of embodiments of the invention 2 and the hydrous matter dewatering of use dewatering system are described.

The formation of the dewatering system of the dewatering system of present embodiment and above-mentioned embodiment 1 shown in Figure 1 is roughly the same, therefore to the identical identical symbol of structure mark of dewatering system of described embodiment 1 shown in Figure 1, and omit repeat specification.

Fig. 2 is the structural representation of structure of the dewatering system of schematic representation embodiments of the invention 2.

As shown in Figure 2, the dewatering system of embodiment 2 is to have the dewatering system of vertical cylindrical dewatering system with well.

That is, dewatering system is a vertical cylindrical with well 21, and the DME of portion ascending pipe 22 enters from dewatering system the top with well 21 from it, has peristome 221A and 221B at dewatering system with the bottom of well.In addition, the hydrous matter ascending pipe 231 that extends from brown coal injection device 232 enters from the top of dewatering system with well 21.This hydrous matter ascending pipe 231 is at dewatering system the peristome 221A of well and the summary upper opening ( peristome 23A and 23B) of 221B.Near peristome 23A and 23B, feeding screw is set.DME-hydrous matter separator 25 and dewatering system are situated between with well 21 and are communicated with DME-hydrous matter outlet 24.Compare with hydrous matter ascending pipe 231, DME ascending pipe 22 extends to and more leans on dewatering system with near the bottom of well 21.

In the dewatering system of present embodiment, the dewatering system of vertical cylindrical is embedded in underground with the major part of well 21, but the vertical cylindrical dewatering system is with the upper end and coupling part separator 25 of well, be positioned on the ground with the coupling part of brown coal injection device 232 and with the coupling part of DME ascending pipe 22.In addition, also be provided with compression condensation device 41 on the ground, be connected with separator 25 by DME carrier pipe 42.Compression condensation device 41 is connected with DME ascending pipe 22.DME groove 88 is situated between and is connected with DME ascending pipe 22 with valve.Therefore, being admitted to dewatering system from DME ascending pipe 22 is the new liquid D ME that replenish from DME groove 88 with the DME of well 21, or in compression condensation device 41 through the liquid D ME of circulation.

Brown coal injection device 232 is that normal pressure is pressed into the device that mode or pressurization are pressed into mode as the explanation that the device 132 to embodiment 1 carries out.

Dewatering system when being provided with this pump, can make the content in the pipe 21A rise with in the well 21 electronic submersible pump (not shown) being set as required, delivers to DME-hydrous matter outlet 24 sides.By this, the suction of going up of the DME-hydrous matter in the pipe 21A becomes easily, promotes its conveying to separator 25.

Separator 25 is the devices that are used for the separation of the mode shown in above-mentioned example 1～3 arbitrary example of implementing.

The DME in the present embodiment and the mobility status of hydrous matter are described as follows described.

From the DME inlet 221 of DME ascending pipe 22 liquid D ME is conducted to dewatering system with in the well 21, the brown coal that are admitted to brown coal injection device 232 are conducted to the contact site 21A of dewatering system with well 21 from installing 232 Jie with hydrous matter inlet 23.Liquid D ME only is the liquid D ME that is liquefied in compression condensation device 41, or this liquid D ME that is liquefied and the liquid D ME that newly replenishes from the DME groove.In contact site 21A, liquid D ME and brown coal are by contacting, and dissolving is contained in the moisture of brown coal, and a part gasifies DME-hydrous matter outlet 24 near and forms gas DME.The DME-hydrous matter that the is discharged from left end of the arrival U word shape in these DME-hydrous matters, that promptly arrive DME-hydrous matter outlet 24 in separator, make up adopt hurried decompression, centrifugation etc. add depress or normal pressure under separated (with reference to above-mentioned example 1～3).Dehydration brown coal and moisture are discharged from from separator 25, and gas DME is sent to compression condensation device 41 by DME carrier pipe 42, become liquid D ME again and are admitted to dewatering system and circulate with well 21.

Embodiment 3

With reference to Fig. 3 the dewatering system of the hydrous matter of embodiments of the invention 3 and the hydrous matter dewatering of use dewatering system are described.

The formation of the dewatering system of the dewatering system of present embodiment and above-mentioned embodiment 1 shown in Figure 1 is roughly the same, therefore to the identical identical symbol of structure mark of dewatering system of described embodiment 1 shown in Figure 1, and omit repeat specification.

Fig. 3 is the structural representation of structure of the dewatering system of schematic representation embodiments of the invention 3.

As shown in Figure 3, the dewatering system of embodiment 3 is to have the dewatering system of U font dewatering system with well.

In the dewatering system of present embodiment, observe with the side of well 11 from U font dewatering system, DME ascending pipe 32 is connected the upper end, right side, has peristome 321.In addition, similarly be connected with hydrous matter ascending pipe 33 and have peristome 331 at upper right side.Therefore, in the system of present embodiment 3, whole dewatering system forms contact site 11A with well 11 ".Brown coal injection device 132 and hopper 133 are connected with hydrous matter ascending pipe 13.Brown coal injection device 132 and DME carrier pipe 42 are connected by pipe 43, the DME gas that the slurryization when brown coal inject is used and is discharged from can by manage 43 and the DME carrier pipe send into compressor 41, liquefy again, be used for the dehydration of dewatering system usefulness well 11.

Embodiment 4

With reference to the dewatering system of the hydrous matter of Fig. 9,10 pairs of embodiments of the invention 4 and use the hydrous matter dewatering of dewatering system to describe.

In addition, the kind as coal adopts brown coal to describe in the present embodiment.

Fig. 9 is the structural representation of structure of the dewatering system of schematic representation embodiments of the invention 4.

As shown in Figure 9, the dewatering system of embodiment 4 is that the dewatering system of the dewatering system of embodiment shown in Figure 11 is located at dewatering system on the ground with well.

Promptly, the dewatering system 70 of embodiment 4 comprises the DME ascending pipe (DME feed unit) 71 of feed fluid DME, supply with the brown coal feed unit 72 of brown coal, will be by the brown coal of these brown coal feed unit 72 supplies and the contact site 73 that mixes by the DME pressurization that DME ascending pipe 71 is supplied with, be connected with this contact site 73, the dehydrator 74 that moisture in brown coal suction DME is carried out the dehydration of brown coal, the liquid cyclone separator 75 that the liquid, aqueous DME that has absorbed the moisture of discharging from this dehydrator 74 is separated with brown coal, DME among the liquid, aqueous DME is gasified, the evaporator 76 that DME is separated with moisture among the DME, the DME carrier pipe 77 that the gas DME that will gasify in this evaporator 76 derives, be connected with this DME carrier pipe 77, be used for pressurization blower (presser unit) 78 that gas DME is pressurizeed, be used for DME condenser pipe 79 that the gas DME through pressurization blower 78 pressurization is carried out condensation, be used to preserve the condensation liquid bath 80 of condensed liquid D ME, condensed liquid D ME be conducted to the liquid D ME carrier pipe 82 of the medial launder 81 of preserving the liquid D ME that supplies with contact site 73.

Make DME ascending pipe 71 and hydrous matter ascending pipe 431 be connected in the contact site 73 that is connected with the bottom 74a of the lower end side of dehydrator 74, DME-hydrous matter outlet 34 is set at another distolateral upper end 74b.

Brown coal feed unit 72 by the conveyer belt 83 that transports the brown coal after the pulverizing, store brown coal storagetank 84 through the brown coal that conveyer belt 83 transports, transport the brown coal of brown coal storagetank 84 conveyer belt 85, accept the brown coal of brown coal storagetank 84 hopper 333, inject groove 86 and constitute entering the pressurize brown coal preserved of brown coal in the hopper 333.

In the present embodiment, adopt the brown coal through pulverizing in advance, but also the pulverizing unit can be set, be conducted to brown coal storagetank 84 again in the front of brown coal storagetank 84.

For example the brown coal of unloading down are stored in brown coal storagetank 84 by conveyer belt 83, utilize conveyer belt 85 to be sent to be conducted to brown coal behind the hopper 333 and inject groove 86.In addition, control by the switch of valve V1 to the brown coal supply that brown coal inject groove 86 from hopper 333.Adopt the brown coal through pulverizing in advance in the present embodiment.

The hydrous matter ascending pipe 431 that is connected with brown coal injection groove 86 is connected the top of contact site 73, and brown coal inject groove 86 from brown coal and utilize feeding screw 87 to be conducted in the contact site 73 by the tops from contact site 73 in the hydrous matter ascending pipe 431.In addition, control by the switch of valve V2 to the brown coal supply of contact site 73 from hydrous matter ascending pipe 431.

In addition, DME ascending pipe 71 is connected with contact site 73, and liquid D ME is situated between and is conducted to contact site 73 with DME ascending pipe 71.Liquid D ME is liquefied and is stored in the DME of medial launder 81 at evaporator 76, or this DME that is liquefied with from the DME groove 88 new liquid D ME that are stored in medial launder 81 that replenish.In addition, control by the switch of valve V3 to the quantity delivered of the liquid D ME of contact site 73 from DME ascending pipe 71.

Contact site 73 has not shown presser unit, brown coal and the pressurized mixing of liquid D ME in contact site 73.Then, brown coal that mix through pressurization and liquid D ME supply with from the bottom 74a as the lower end side of dehydrator 74.In addition, in contact site 73 or the 74a of bottom, brown coal and liquid D ME are for example mixed under the condition about about 35 ℃, 8～13 atmospheric pressure.

Can be situated between with DME inject arm 89 from the bottom 74a of dehydrator 74 to brown coal pressurization mixing material DME.At this moment, injecting arm 89 from DME controls by the switch of valve V4 to the supply of the liquid D ME of bottom 74a.

In contact site 73, liquid D ME and brown coal mix back Jie is conducted to dehydrator 74 from DME-hydrous matter inflow entrance 91 with DME-hydrous matter supply passageway 90 bottom 74a.At this moment, control by the switch of valve V5 to the supply of the liquid D ME of bottom 74a from contact site 73.

Here, the mixture with brown coal and liquid D ME is conducted to dehydrator 74 employing intermittent mode or the semi-batch mode that are full of liquid D ME.Thereafter continuation mode is adopted in dehydration separation etc.Therefore, being attached to the valve V5 that dehydration separates etc. is the flow control valve that prevents adverse current.

In the process that liquid D ME and brown coal rise in dehydrator 74, by contacting of liquid D ME and brown coal, the moisture that comprises in the brown coal is inhaled into liquid D ME and dewaters.

That is, by contacting of liquid D ME and brown coal, the moisture dissolving that comprises in the brown coal is inhaled into liquid D ME.By this, the part of liquid D ME becomes the liquid D ME (liquid, aqueous DME) that contains moisture.This liquid, aqueous DME utilizes continuous flow to be pushed to the top of dehydrator 74.

Along with the rising in dehydrator 74, the moisture absorption amount of the liquid D ME state that reaches capacity, moisture liquid D ME account for major part in the dehydrator 74, are in the state that has little or no liquid D ME.Liquid, aqueous DME utilizes continuous flow to be pushed to the top of dehydrator 74.

In the dehydrator 74,, the rising of liquid, aqueous DME descends the liquid D ME gasification of denier and produce DME gas (gas DME) because of causing pressure.By this, the pressure of the bottom 74a of the pressure ratio dehydrator 74 DME-hydrous matter outlet 92 near is low.Therefore, further give liquid, aqueous DME, gas DME in the dehydrator 74 with buoyancy, liquid, aqueous DME, gas DME rise dehydrator 74 in, and the outlet of arrival dehydrator 74 is from 92 discharges of DME-hydrous matter outlet.Can be provided for regulating the heating apparatus of the temperature in the dehydrator 74, the moisture absorption amount of increase liquid D ME, the gasification buoyancy of promotion DME etc. at dehydrator 74.

In addition, near the pressure the DME-hydrous matter outlet 92 only reduces that part of pressure that liquid D ME becomes gas DME.

Here, near the temperature the DME-hydrous matter outlet 92 is about 45 ℃, and pressure is about 10 atmospheric pressure.

Once being dissolved in the moisture of liquid D ME separates by the variation of DME saturation solubility, the gasification of DME.The saturation solubility of liquid D ME, saturated vapour pressure be for responsive to temperature, so the reach capacity position of state, position of liquid D ME gasification etc. of the moisture absorption amount of the liquid D ME in the dehydrator 74 change according to temperature, the pressure condition of the liquid D ME in the dehydrator 74.

Dehydrator 74 and liquid cyclone separator 75 are connected the DME-hydrous matter drain passageway 93 that is set at DME-hydrous matter outlet 92.Liquid, aqueous DME, the gas DME, moisture, the dehydration brown coal Jie that are discharged from from DME-hydrous matter outlet 92 are sent to liquid cyclone separator 75 with DME-hydrous matter drain passageway 93.In addition, control flow to the supply of liquid, aqueous DME, the gas DME of liquid cyclone separator 75, moisture, dehydration brown coal by valve V6 from dehydrator 74.

In the liquid cyclone separator 75, the dehydration brown coal are separated with liquid, aqueous DME, gas DME and the moisture that is transferred with DME-hydrous matter drain passageway 93 that is discharged from from DME-hydrous matter outlet 92, is situated between.This liquid, aqueous DME, gas DME and moisture are sent to evaporator 76 by moisture DME separate paths 94.In addition, control flow to liquid, aqueous DME, the gas DME of evaporator 76 and the supply of moisture by valve V7 from moisture DME separate paths 94.

Here, liquid cyclone separator 75 can adopt known product, and general structure such as Japan Patent spy open 2007-90165 communique, spy and open 2007-54776 communique and spy and open the 2007-38200 communique and disclose.

In addition, after the dehydration brown coal that liquid separator 75 is separated are derived by brown coal derived channel 95, deliver to brown coal and take out groove 96.Brown coal take out groove 96 and almost are depressurized to normal pressure.The dehydration brown coal that are stored in brown coal taking-up groove 96 are transported to dehydration brown coal conveyer belt 98 by feeding screw 97.Regulate by the switch of valve V8 to the supply that brown coal take out the dehydration brown coal of groove 96 from liquid cyclone separator 75, take out groove 96 from brown coal and regulate by the switch of valve V9 to the supply of the dehydration brown coal of dehydration brown coal conveyer belt 98.

Liquid, aqueous DME, the gas DME and the moisture that are sent to evaporator 76 are separated into gas DME and moisture in evaporator 76.Temperature in the evaporator for example is about 25 ℃, and pressure for example is about 5 atmospheric pressure.Gas DME derives from DME transfer pot 77 from the top of evaporator 76, utilizes pressurization blower 78 to carry out pressurized treatments and makes temperature for example reach about 39 ℃, and pressure for example reaches about 8 atmospheric pressure.

Here, evaporator 76 formation are as the so-called Ke ﹠amp of dual structure; Tubular construction, thinner DME condenser pipe 79 spreads all over its inside.

Be sent to steam pressure regulating tank 100 and recovery through the gas DME of pressurization Jie with gas DME recovery tube 99.Then, gas DME is sent to the DME condenser pipe 79 that spreads all over evaporator 76 inside from the upper side of evaporator 76, and the heat of gasification that produces with the gasification of following the liquid, aqueous DME that flows down from the top of evaporator 76 carries out heat exchange and condensation.In addition, control flow to the supply of the gas DME of steam pressure regulating tank 100 by valve V10, control flow to the supply of the gas DME of evaporator 76 by valve V11 from steam pressure regulating tank 100 from pressurization blower 78.

Liquid D ME flows to bottom direction by DME condenser pipe 79 from top, is discharged from from the bottom side of evaporator 76, is stored in condensation liquid bath 80.

This liquid D ME through condensation is situated between from condensation liquid bath 80 and utilizes pump P1 to be sent to medial launder 81 with liquid D ME supply pipe 82.In addition, control by the switch of valve V13 to the supply of the liquid D ME of medial launder 81 from condensation liquid bath 80.

For example from oil truck to DME groove 88 new feed fluid DME.Then, the liquid D ME that newly is conducted to DME groove 88 utilizes pump P2 to be sent to medial launder 81 by DME supply pipe 102.Then, liquid D ME Jie who is stored in this medial launder 81 utilizes pump P3 to be conducted to contact site 73 with DME ascending pipe 71.

Therefore, utilize the structure of present embodiment, in dehydrator 74, can effectively moisture be sucked liquid DME and finish dehydration from brown coal with low-yield.In addition, in evaporator 76, can from the liquid, aqueous DME that is discharged from by dehydrator 74, remove moisture and regenerate, and gas DME liquefaction can be regenerated as liquid D ME.By this, the liquid D ME of regeneration can be delivered to dehydrator 74 once more and be circulated, and therefore, liquid D ME can be used further to the dehydration of brown coal effectively in dehydrator 74.

In addition, the liquid D ME in DME groove 88, the medial launder 81 for example cools off with refrigerants such as cooling waters 103,104.

The liquid D ME that is conducted to DME groove 88 controls by the switch of valve V14, controls by the switch of valve V15 to the supply of the liquid D ME of medial launder 81 from DME groove 88.In addition, control by valve V16, V17 to the quantity delivered of the liquid D ME of contact site 73 or dehydrator 74 from medial launder 81.

The liquid D ME that is stored in medial launder 81 can be back to medial launder 81 once more.At this moment, shut off valve V17 opens valve V16,18.

Being stranded in brown coal, to take out the branch of bottom of groove 96 dried up from dividing dried up delivery line 105 to derive, and after filtering with filter 106, utilizes pump P4 to deliver to final gas separating tank 107.In this final gas separating tank 107,, be situated between and after pressurizeing, deliver to steam pressure regulating tank 100 with pressurization blower 109 with gas DME recovery path 108 to dividing the dried up gas DME that comprises to separate.In addition, control from the dried up switch by valve V19 of branch that brown coal taking-up groove 96 is discharged from, the gas DME that flows in gas DME reclaims path 108 controls by the switch of valve V20.On the other hand, in final gas separating tank 107, finally be removed the dried up rhone that is discharged to of branch of gas DME.

In addition, the gas DME that produces in contact site 73, derives from hydrous matter ascending pipe 431 and similarly be situated between from the gas DME that brown coal take out groove 96 and derive and reclaim path 110,111 with gas DME and reclaim path 108 with gas DME and collaborate is sent to pressurization blower 109.In addition, the gas DME that derives from hydrous matter ascending pipe 431 controls by the switch of valve V21, and the gas DME that takes out groove 96 derivation from brown coal controls by the switch of valve V22.

The dried up part of branch that is stranded in the bottom of evaporator 76 is situated between and utilizes pump P5 to be conducted to the top of evaporator 76 once more to separate water circulation path 101.In order to promote liquid, aqueous DME in the evaporator 76 and the heat exchange of the gas DME in the DME condenser pipe 79, liquid, aqueous DME is contacted fully with the DME condenser pipe, and not separated and take out the remaining dehydration brown coal be conducted in the evaporator 76 and do not stop up in order to make in liquid cyclone separator 75, keep fluid floies such as liquid, aqueous DME, moisture.When resupplying dried up a part of of this branch, regulate by the switch of valve V23 to the dried up liquid measure of branch of separating water circulation path 101 and deriving from evaporator 76.

In addition, the remaining dehydration brown coal that do not separated at liquid cyclone separator 75 are sent to evaporator 76 with liquid, aqueous DME, therefore with the dried up bottom that is accumulated in evaporator 76 of branch that produces in the liquid, aqueous DME gasification of evaporator 76 internal causes.So the brown coal that are accumulated in evaporator 76 bottoms are recovered to brown coal by feeding screw 112 from the bottom of evaporator 76 and take out groove 96.At this moment, open valve V24, the brown coal of evaporator 76 bottoms are recycled to brown coal and take out groove 96.

Figure 10 is the stereogram of structure of the dewatering system of schematic representation embodiments of the invention 4.As shown in figure 10, the dewatering system 70 of present embodiment is set at building 123, operates by operation board 114.Brown coal feed unit 72, contact site 73 etc. are provided with a plurality of series (being 2 series among the embodiment shown in Figure 10), and continuity from brown coal to dehydrator 74 that supply with improves.

Dehydrator 74 extends to the top from ground side with helical form along the inwall of the sidewall of building 123, make DME ascending pipe 71 and hydrous matter ascending pipe 431 be connected in the contact site 73 that is connected with the bottom 74a of the lower end side of dehydrator 74, DME-hydrous matter outlet 92 is set at another distolateral upper end 74b.

Here, the height of dewatering system 70 shown in Figure 10 is 20m.As previously mentioned, be arranged at that the degree of depth is 100m when underground.This is in order to keep enough pressure.The degree of depth of the height of these ground mo(u)ld top half dewatering systems or ground mo(u)ld bottom half dewatering system can dewater according to brown coal the speed etc. of liquid such as required time, liquid D ME suitably set just when.

Part or all of the dewatering system of Fig. 9 and ground mo(u)ld top half hydrous matter shown in Figure 10 also can directly be arranged at underground.

DME-hydrous matter outlet 92 is situated between and is connected with liquid cyclone separator 75 with DME-hydrous matter drain passageway 93, is derived by brown coal derived channel 95 at liquid cyclone separator 75 separated dehydration brown coal and is stored in brown coal taking-up groove 96.Then, the brown coal utilizations dehydration brown coal conveyer belts 98 that are stored in the brown coal taking-up groove 96 are transported to outside the building 123.

75 separated liquid, aqueous DME, gas DME and moisture Jie are sent to evaporator 76 with moisture DME separate paths 94 at the liquid cyclone separator.Then, moisture liquid D ME gasification in evaporator 76, gas DME separates with moisture, reclaim gas DME from evaporator top, be pressed into the DME condenser pipe 79 that is arranged in the evaporator 76 after adjusting pressure, gas DME liquefaction be regenerated as liquid D ME by heat exchange with the heat of gasification of liquid, aqueous DME.

The contact site 73 of present embodiment is equivalent to contact site 11A, 21A, the 11A of above embodiment 1～embodiment 3 "; the dehydrator 74 of present embodiment is equivalent to the dewatering system well 11,21 of above embodiment 1～embodiment 3; the liquid cyclone separator 75 of present embodiment and evaporator 76 are equivalent to the DME- hydrous matter separator 15,25 of above embodiment 1～embodiment 3, and the dehydrator 74 of present embodiment, pressurization blower 78, DME condenser pipe 79 and condensation liquid bath 80 are equivalent to the compression condensation device 41 of above embodiment 1～embodiment 3.

Therefore, the dewatering system of present embodiment is included in the contact site 73 mixings of pressurizeing to brown coal and liquid D ME, moisture dissolving that will comprise in the brown coal by contacting of liquid D ME and brown coal and the dehydrator 74 of suction liquid DME; The liquid cyclone separator 75 that separates moisture DME and brown coal; Evaporation of water jar 76 among separate DME and the DME; Its heat of gasification is carried out heat exchange, to the liquefy DME condenser pipe of condensation of gas DME.Therefore, in dehydrator 74, can finish dehydration with low-yield effectively moisture the absorption to liquid D ME from brown coal.

Remove moisture and regeneration from the liquid, aqueous DME that discharges from dehydrator 74, and gas DME liquefaction is regenerated as liquid D ME, deliver to medial launder 81 from evaporator 76, by this, the liquid D ME of regeneration can be used in the dehydration of brown coal effectively again in dehydrator 74.

Claims (8)

1. the dewatering system of hydrous matter, it is characterized in that, comprise and have the dewatering system well that makes the contact site that the liquid dimethyl ether contacts with hydrous matter, be connected with well with described dewatering system respectively, dimethyl ether ascending pipe and hydrous matter ascending pipe at the entrance side opening of contact site, as described dewatering system summary upper end opening with the outlet side of the contact site of well, be used to discharge the dimethyl ether hydrous matter outlet of the dimethyl ether hydrous matter after the contact, be connected with well with dewatering system by described dimethyl ether hydrous matter outlet, the dimethyl ether hydrous matter separator that dimethyl ether is separated with hydrous matter.

2. the dewatering system of hydrous matter as claimed in claim 1, it is characterized in that, with embedding on the summary of well, each pipe and dewatering system are with formation double pipe between the well and at described contact site opening from described dewatering system for described dimethyl ether ascending pipe and/or described hydrous matter ascending pipe.

3. dewatering system as claimed in claim 1 or 2 is characterized in that, described dewatering system is embedded in underground with at least a portion of well.

4. as each described dewatering system in the claim 1～3, it is characterized in that, also comprise the compressor that is used for the Compressed Gas dimethyl ether and injects, be used to cool off that compressed dimethyl ether makes its condensation and with the condenser of dimethyl ether liquefaction, connect described compressor, condenser and described separator and make the dimethyl ether carrier pipe of dimethyl ether circulation.

5. the dewatering system of hydrous matter, it is characterized in that, the dimethyl ether feed unit that comprises the feed fluid dimethyl ether, supply with the hydrous matter feed unit of hydrous matter, will be by the described hydrous matter of described hydrous matter feed unit supply and the contact site that mixes by the described dimethyl ether pressurization that described dimethyl ether feed unit is supplied with, be connected with this contact site, the dehydrator of the moisture absorption in the described hydrous matter being gone into described dimethyl ether and carrying out the dehydration of described hydrous matter, the liquid cyclone separator that the liquid, aqueous dimethyl ether that has absorbed the moisture of discharging from this dehydrator is separated with described hydrous matter, with the described dimethyl ether gasification in the described liquid, aqueous dimethyl ether, the evaporator that described dimethyl ether is separated with moisture in the described dimethyl ether, the dimethyl ether carrier pipe that the gas dimethyl ether of the gasification in the described evaporator is derived, be connected with described dimethyl ether carrier pipe, be used for presser unit to the dimethyl ether pressurization of described gasification, be used for the dimethyl ether condenser pipe of condensation through the dimethyl ether of this presser unit pressurization, be used to preserve the condensation liquid bath of condensed dimethyl ether, condensed dimethyl ether delivered to the liquid dimethyl ether carrier pipe of the groove of preserving the liquid dimethyl ether that is supplied to described contact site.

6. dewatering system as claimed in claim 5 is characterized in that, described dewatering system is set on the ground with well or is underground.

7. as each described dewatering system in the claim 1～6, it is characterized in that described hydrous matter is a coal.

8. the dewatering of hydrous matter is characterized in that, adopts each described dewatering system in the claim 1～6.

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