CN1160418A - Method and device for reducing water content of water-contg. brown coal - Google Patents
Method and device for reducing water content of water-contg. brown coal Download PDFInfo
- Publication number
- CN1160418A CN1160418A CN95195219A CN95195219A CN1160418A CN 1160418 A CN1160418 A CN 1160418A CN 95195219 A CN95195219 A CN 95195219A CN 95195219 A CN95195219 A CN 95195219A CN 1160418 A CN1160418 A CN 1160418A
- Authority
- CN
- China
- Prior art keywords
- brown coal
- feature
- pressure
- coal
- arbitrary
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
- F26B17/02—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by belts carrying the materials; with movement performed by belts or elements attached to endless belts or chains propelling the materials over stationary surfaces
- F26B17/026—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by belts carrying the materials; with movement performed by belts or elements attached to endless belts or chains propelling the materials over stationary surfaces the material being moved in-between belts which may be perforated
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10F—DRYING OR WORKING-UP OF PEAT
- C10F5/00—Drying or de-watering peat
- C10F5/04—Drying or de-watering peat by using presses, handpresses, rolls, or centrifuges
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B7/00—Drying solid materials or objects by processes using a combination of processes not covered by a single one of groups F26B3/00 and F26B5/00
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The invention concerns a method of reducing the water content of water-containing granular brown coal involving the application of heat energy and pressure to the material spread out in a bed. The brown coal is subjected to mechanically applied initial surface pressure at a level below the maximum surface pressure which occurs in the process, while thermal energy is imparted to the brown coal by steam, which heats the coal and condenses. The surface pressure is then raised without any further steam being supplied to a level (at least 2.0 MPa) at which the water held in the heated brown coal is forced out.
Description
The present invention relates to the material (coal) that heat energy and pressure act on horizontal distribution is gone up method and apparatus with the water-content that reduces aqueous particulate shape brown coal.
Having of disclosing in the past only is used for peaty use mechanical pressure and heat energy reduces fossil oil water-content method.Mud coal is a minimus natural fuel on the geology, and its feature is the moisture that contains up to 85-95%.Different with brown coal, mud coal also contains a certain amount of Mierocrystalline cellulose, so water only depends on faint power to combine with solid matter, thereby, just can remove the overwhelming majority's water with simple squeezing.A kind of these class methods in DE-PS 3 59 440, have been disclosed.The dewatering that this patent has been described mud coal etc. at first carries out precompressed to the material that will dewater, and with the plunger press material is pressed into thin layer, eliminate pressure after, material is placed under the high pressure steam, carry out last pressurization subsequently.The step of this method particularly important is that material is placed steam, is subjected to the chamber of containing material of press plunger boundary, owing to regain plunger, the material in it expands and the chamber of making expansion, thereby can make the cake piece of compression loose by this effect of steam.Because the ship cake piece is loose, the high pressure steam that above-mentioned steps is supplied with is easy to facilitate the path in the ship cake piece and pushes loose material open, can make a large amount of steam by again material there not being the passage of influence thereby form in material.By the precompressed of carrying out in the cold conditions of material, from material, discharge the expressible water of cold conditions, this water exists in a large number as surface water in mud coal.Yet, must be carefully guaranteeing under excess pressure, not carry out precompressed, otherwise the solid compressed cake piece that forms, as no further step, steam is difficult to pass through.
With regard to brown coal dehydrations, must imagine in the brown coal and do not contain free-water.Water can not cold conditions be squeezed out with the molecular conformation bonding in brown coal.
The moisture of brown coal is up to 65 weight %.When at the power plant burning brown coal, must be directly quite a large amount of brown coal of usefulness or with a large amount of heat energy transpiring moistures in the combustion gas.Used energy depends on water-content, can be up to 22%.If before burning, carry out effective dry and dehydration reduces moisture in the raw material brown coal, just can reduce the energy consumption of this respect.In addition, owing to the result of upstream drying step, can reduce the size of the boiler and the downstream unit in power station.For the brown coal with high-moisture change into electric energy, by the total efficiency in the energy favourable upstream measure that the dewaters raising greatly power station.
The method and apparatus that reduces water-content in the brown coal has been arranged, in the patent of " brown coal 39 (1987), the 3rd volume, 46-57 page or leaf " and " brown coal 39 (1987), Volume Four, 78-87 page or leaf " and citation therein, described these method and apparatus.These methods of mentioning have by the heated drying method of evaporation with to the hot evaporation (Flei β ner) that feeds superheated vapour in precharge to the brown coal in the autoclave of about 3.0MPa.Jia Re brown coal after taking out, move into a moisture-free coal warehouse from autoclave in this way, by the brown coal after the dehydration of secondary ventilation cooling heat, and carry out redrying.
The difficulty that adopts these methods to reduce the moisture in the brown coal in extensive power station is that equipment requirements and/or energy consumption are all very high owing to require high brown coal throughput.In hot dewatering,, fail industrialization so far although compare its specific energy consumption with heated drying lower.The shortcoming of heat dehydration is especially to continuous operation, must the applying pressure lock or rotary valve and high-pressure pump to brown coal reinforced and blowing.And, this hot dewatering, the saturated-steam temperature of the steam that its heating brown coal are required must be corresponding with the required high pressure phase of atmosphere of pressurizeing.
The objective of the invention is to avoid the defective in these methods by reducing the equipment of energy consumption and use.The feature of claim 1 of the present invention is used to reach this purpose.
By this heat/mechanical dehydration method, with less heat energy consumption and mechanical energy consumption, continuous or periodical operation can successfully make the brown coal dehydration.Under initial surface pressure, heating brown coal layer can cause physics and chemical action, makes that the bonded water molecules gets loose in the coal.Water just can flow out with liquid state from the kapillary of coal and space, and is easy to squeezing.Compare with the heated drying method, saved the required energy of vaporize water.
Compare with known hot dewatering, the most basic advantage of method of the present invention is not need pressure lock, valve or high-pressure pump in brown coal and dehydration continuous charging of brown coal and the blowing.Thereby eliminated the factor that may become source of trouble and cause dehydration operate continuously difficulty.According to the design of the inventive method, the saturated-steam temperature of input steam is lower than the saturated-steam temperature under the maximum surface pressure.And, because the filteration of brown coal layer and low saturated-steam temperature, solids content in the squeeze water and COD and BOD
5The ratio of value is lower than the value of currently known methods.
The method according to this invention has satisfied the general requirement of industrialization dewatering, but low as cost of investment, floor space is little, the reliability height of high yield continuous operation, operation and equipment, to meet environmental protection requirement, process cost and energy consumption low.
In the operation before the rising surface pressure, must the even heating material, because the filter cake that material forms under initial surface pressure like this has uniform resistance to the steam that imports, and makes steam pass through material equably.Vapour pressure can have the identical order of magnitude of corresponding mechanical pressure such as 0.4MPa.
In order to make the material under present method adaptation specified conditions easily, when squeezing, can change the surface pressure, particularly pressure boost of brown coal.Confirmed that in this case, it is favourable to select maximum surface pressure to be at least about 2MPa.
Condensation when avoiding steam to enter material, it is overheated that steam needs.At least it is overheated 10 ℃ to want.Because overheated, even steam imports by conduit etc. the time and also condensation can not take place in advance.
In order to make steam high energy be arranged to material, material preferably is ground into the particle of the most about 20 millimeters granularity before its horizontal distribution.By preheated material, carry out the required energy of this method and can also reduce.For this purpose, can utilize the water that from material, squeezes in used heat or this method also to can be used as waste heat source.
For the advantageous conditions to effect that imports steam and the possibility of fully squeezing will be provided, material will distribute with the form of layer, and such center line average makes the pressure layer center line average after exerting pressure be at least about 0.2 meter.If brown coal make in this way, this means pressurization before, the scope of the center line average that distributes with the form of layer is approximately 0.4-1 rice.Confirm that after the pressurization, the pressure layer height of generation is the highest to be about 0.6 meter.
Will carry out this method as far as possible rapidly, preferably the mode that acts on consistently on the material with surface pressure is carried out.
Because the particulate state brown coal at wedge and applying under the initial surface pressure, disperse with the form of layer, finally form evenly filling, it is with the surface of uniform drag effect in the vapour stream exhibition bed of heating.
Add steam with suitable manner, make brown coal be heated to treatment temp at the condensing zone of steam, steam is in the plane that in fact is parallel to laminar surface, and arrives layer with the plane vertical diffusion.The steam input should be arranged in this manner, and when condensing zone reached the outer edge on surface, all material layer was heated.By this way, do not need complicated safety guard, just can avoid the leakage of steam.And can be effectively provide and make the material can outside effusive wall to material layer.
Utilization has the flowing property of layer of specified particle size layer and the advantage that produces for the precompression of carrying out this method by it, can successfully carry out the relevant brown coal of optimizing different collieries the dewater required treatment temp and the modification of rate of heating.This point can be by having the coal seam that low granularity coal forms, or when carrying out this method according to claim 20 with board-like press, by the coal seam that corresponding precompression layer changes, the resistance to flow that changes its tectum and/or bottom obtains.
Available continuous press carries out this method continuously with the pressurization that depends on the position, or intermittently carries out this method with board-like press with the pressurization that depends on the time.
Conveying belt is provided at the suitable equipment that continuous press on carry out continuous processing with the material of horizontal distribution and at it by double belt press that the material layer area surrounded increases the input field of compression and a plurality of steam input nozzles with accepting by having up and down.Having up and down, the double belt press of conveying belt can be used for as the continuous production chipboard.As in DE-A 40 10308, having disclosed this class double belt press.
In order to emit the water of squeezing with the suitable way of output, the conveying belt of lower floor of so at least double belt press has the through hole of the water that can draw squeezing.The upper strata conveying belt should be able to be regulated height, and the pressure transmission element that can regulate pressure is arranged.Like this, this double belt press just can be applicable to various operational conditions.
Also in order to add hot conveyer belt by further providing heat energy to solid matter.
In order to carry out this method with interval type, preferably use board-like press, board-like press has the wedge of the material that a pressure head and acceptable level distribute, and wedge should have the aperture that can import steam and the outlet of squeeze water at least.
When using flat press,, preferably also add thermal head and wedge for the material of giving this mode provides heat energy.
Method of the present invention and above-mentioned equipment also are applicable to the dehydration of mud coal and sewage mud.
With following reference and explanation embodiment the present invention is described.In the accompanying drawing
Fig. 1 provides the double belt press as continuous flow press,
Fig. 2 provides the flat press that is used to squeeze the operation of anterior diastema formula,
Fig. 3 provides the flat press in the press operation identical with Fig. 2.
Fig. 1 points out brown coal warehouse 1, and the brown coal of precomminution to decide granularity are wherein arranged.The steam of hot coal or the surface of hot water input tube or heat exchanger can be connected to coal warehouse 1 in advance.The brown coal of precomminution are distributed to the conveying belt of lower floor 2 that is illustrated by the broken lines by layer from coal bunker, and conveying belt of lower floor 2 is carried coal with direction shown in the arrow.The top of the conveying belt of lower floor 2 of double belt press as shown in the figure is a upper strata conveying belt 3, and it also dots (press belt) advances by the direction shown in the arrow, its speed and conveying belt 2 couplings.8 direction diminishes distance between the conveying belt 2 and 3 along the input field, and the pressure in coal seam 4 is raise.According to input and its water-content of brown coal,, can regulate the height of conveying belt 3 in its whole transmission process by the power that applies by pressure transmission element 5.A plurality of steam feed nozzles 6 in the emperipolesis coal seam 4 shown in the figure orbicular spot are housed between conveying belt 2 and 3, and the outlet aperture of steam feed nozzle is positioned at input field 8, and the pressure in coal seam is lower than the maximum surface pressure on conveying belt 2 and 3 herein.The steam that discharges from steam feed nozzle 6 gives coal with its heat, its condensation then.Owing to the steam distributing nozzle of many different lengthss and height has been installed, can have been guaranteed the suitable uniform heating in coal seam 4.
8 cause following chemistry and physical process with the heat effect simultaneously of rising pressure in the input field, and during this period, the colloidal structure of brown coal and the character of water change:
Physical process:
-even heating coal particle,
Breaking of-capillary pipe structure is accompanied by:
-plastifying brown coal volumetric shrinkage,
-texture of coal fixed,
-from the capillary pressure liquid water of squeezing out, by:
-with the expansion of water in the reduction coal of viscosity,
-because the result of front chemical process changes surface properties (wetting ability-hydrophobicity),
-remove and to deash, an alkali metal salt and become favourable particularly.
Chemical process:
Carbonic acid gas is emitted in the degraded of-oxygen-containing functional group,
-cause the thermolysis of brown coal, emit methane and higher molecular weight hydrocarbon.
Following factor has determined the dehydration of brown coal substantially:
-throughput or bed height,
-brown coal granularity,
-brown coal water-content,
-pressure,
-temperature,
-the residence time.
By the pressure or the temperature of the conveying belt 3 of regulating height and the superheated vapour of importing, but the setup parameter pressure and temperature is as the function of brown coal throughput, granularity and moisture.In first treatment zone (input field 8), pressurizeed in coal seam 4 by on conveying belt 3, applying the mechanical force that increases continuously.After reaching maximum surface pressure (it must be stipulated), fixed coal seam 4 enters following treatment zone, at there, is kept constant or is only slightly changed by upper strata conveying belt 3 applied pressures.The effect of the temperature of pressure and rising makes free and the water that discharges can 4 squeezings from the coal seam, and by conveying belt 2, also has the through hole 7 (through-holes) on the conveying belt 3 sometimes, discharges in one or more stages.The hot water of discharging by through hole 7 or the shunting of this water can be used for the preheating of brown coal.
Reach decide coal after the dehydration of water-content, arrive biobelt press terminal and discharge, be divided into the piece of pre-sizing by an equipment, and send it to pulverizer by the particular approach on the continuous conveyor, be crushed to the burning or the required granularity of vaporizing.
The flat press that Fig. 2 points out has wedge 9 and pressure head 10.Wedge 9 only is placed on the bearing 11 and 12 with the sketch signal.Pressure head 10 be suspended on by the pressure assembly that do not provide among the figure raise or the plunger 13 that reduces on.The design of this press basically with former field in identical.
Wedge 9 is bathtub constructions, so solid material 14 can be therein with horizontal distribution.Wedge 9 and pressure head 10 have water outlet 15 and 16, steam inlet hole 21 and 22, and like this, in the flat press of sealing as shown in Figure 3, steam can enter solid material 14, and the water of discharge can be derived.By groove 17 and 18,23 and 24, with water outlet 15 and 16, steam inlet hole 21 and 22 is connected to the bottom of wedge 9 and the end of pressure head 10, thereby the water of squeezing can flow out, and steam can enter solid material 14.
All placed a very thin sieve 19 and 20 in the bottom of wedge 9 and the end of pressure head 10, sieve can allow water or steam pass through, but can prevent that solid material from entering groove 17 and 18,23 and 24, so wedge and pressure head can not stop up.
Fig. 3 be flat press among Fig. 2 at the figure of off-position, pressure head 10 descends compression solid material 14 to wedge 9.When initial pressure on solid material 14 was lower than peak pressure, steam led into by steam that hole 21 and 22 enters solid material 14, heat solid material 14.By pressure head 10 on solid material 14 effectively applied pressure be increased to peak pressure subsequently, squeeze out in the solid material 14 water that exists, and discharge by outlet 15 and 16.Can be with reference to the method for 1 pair of front of figure and result's explanation.
Because quite low installation cost, aforesaid method is suitable for the power station of particularly large-scale burning brown coal.And, using this method in the factory that uses brown coal, can increase as the density calorific value of moisture-free coal with the function of raw material brown coal water-content ratio, therefore can more effectively transport brown coal.
Claims (21)
1. the material (coal) that heat energy and pressure are acted on horizontal distribution is gone up the method with the water-content that reduces aqueous particulate shape brown coal, it is characterized in that it is
A) machinery applies the initial surface pressure that is lower than in the treating processes the maximum surface pressure that can produce on brown coal, at this moment, provides heat energy with steam to brown coal, itself condensation behind the steam heating brown coal.
B) subsequently, no longer import steam, surface pressure is increased to 2.0MPa at least, make the moisture content in the brown coal after the heating be squeezed out.
2. the method for claim 1, its feature is that also this concrete mechanical pressure load is and the same order of magnitude of corresponding vapor pressure.
3. as the described method of arbitrary claim in claim 1 or 2, its feature also is can change the surface pressure, particularly pressure boost on the brown coal (4,14) in treating processes.
4. as the described method of arbitrary claim among the claim 1-3, its feature is that also steam is superheated vapour.
5. method as claimed in claim 4, its feature also are to want overheated 10 ℃ at least.
6. as the described method of arbitrary claim among the claim 1-5, its feature is that also brown coal (4,14) before its horizontal distribution, are crushed to the most about 20 millimeters granularity earlier.
7. as the described method of arbitrary claim among the claim 1-8, its feature also is brown coal (4,14) before it distributes with laminar, by the used heat preheating.
8. method as claimed in claim 7, its feature are that also employed waste heat source is the water that squeezes out from brown coal (4,14) in the treating processes.
9. as the described method of arbitrary claim among the claim 1-8, its feature is that also brown coal (4,14) are that stratification distributes, and the pressure layer center line average that pressurization back, coal seam produces is at least about 0.2 meter.
10. the height maximum after method as claimed in claim 9, its feature also are to pressurize is about 0.6 meter.
11. as the described method of arbitrary claim among the claim 1-10, its feature also is to apply continuously surface pressure on brown coal.
12. as the described method of arbitrary claim among the claim 1-11, its feature is that also the initial surface pressure of selecting is at least 0.2MPa, brown coal is formed fill, so that the steam that flows through bed face is had uniform resistance.
13. as the described method of arbitrary claim among the claim 1-12, its feature also is the plane condensing zone that the steam of importing should be able to make the heating of brown coal occur in to be parallel to bed face, this condensing zone advances to the coal seam with the direction perpendicular to bed face.
14. as the described method of arbitrary claim among the claim 1-13, its feature also is in order to obtain condensing zone propulsive optimum velocity in the coal seam, the maximum particle size of the coal in about 1/10th thickness of coal seam is limited in about 2 millimeters, so that resistance to flow increases apart from the bed face distance with bed.
15. as the described method of arbitrary claim among the claim 1-14, its feature also is to obtain the resistance to flow along with the variable in distance of distance bed face, applies the surface pressure of about 1MPa in advance at the cold volume that is equivalent to about 1/10th maximum bed heights.
16. as the described method of arbitrary claim among the claim 1-15, its feature also is
A) a kind of have a up and down double belt press of conveying belt (2,3) and input field (8), is used to accept the brown coal (4) of horizontal distribution and the compression of increase thereof,
B) (Fig. 1) by the many steam feed nozzles (6) in the input field (8) of bed (4) encirclement.
17. according to the equipment of claim 16, it is characterized in that on conveying belt of lower floor (2), having at least through hole (7), be used to discharge the water of squeezing.
18., it is characterized in that upper strata conveying belt (3) can regulate height, and the pressure transmission element (5) of adjustable pressure arranged according to the equipment of arbitrary claim in claim 15 or 16.
19., it is characterized in that to add hot conveyer belt (2,3) according to the equipment of arbitrary claim among the claim 16-18.
20. carry out equipment according to the described method of arbitrary claim among the claim 1-15, it is characterized in that flat press has pressure head (10) and wedge (9), wedge (9) is accepted the brown coal (14) of horizontal distribution, air inlet port (21 for input steam is arranged on the pressure head (10) at least, 22), at least be useful on the outlet (15,16) (Fig. 2,3) of the water that discharge squeezes out from brown coal (14) on the wedge (9).
21. equipment as claimed in claim 20, its feature also are to add thermal head (10) and/or wedge (9).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP4434447.3 | 1994-09-27 | ||
DE4434447A DE4434447A1 (en) | 1994-09-27 | 1994-09-27 | Method and device for reducing the water content of carbon-containing solid materials |
Publications (1)
Publication Number | Publication Date |
---|---|
CN1160418A true CN1160418A (en) | 1997-09-24 |
Family
ID=6529280
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN95195219A Pending CN1160418A (en) | 1994-09-27 | 1995-09-26 | Method and device for reducing water content of water-contg. brown coal |
Country Status (11)
Country | Link |
---|---|
EP (1) | EP0784660B1 (en) |
JP (1) | JPH10506145A (en) |
CN (1) | CN1160418A (en) |
AU (1) | AU695187B2 (en) |
CZ (1) | CZ79597A3 (en) |
DE (2) | DE4434447A1 (en) |
FI (1) | FI971271A (en) |
HU (1) | HUT77187A (en) |
PL (1) | PL319381A1 (en) |
TR (1) | TR199501177A2 (en) |
WO (1) | WO1996010064A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102061211A (en) * | 2011-01-04 | 2011-05-18 | 内蒙古工业大学 | Integral purified integration system and process of lignite in cement production through catalytic mild pyrolysis |
CN103087796A (en) * | 2013-02-07 | 2013-05-08 | 中国矿业大学 | Process and system for vibration hot-pressing dehydration quality improvement of brown coal |
CN106393777A (en) * | 2015-08-01 | 2017-02-15 | 辛北尔康普机器及成套设备有限责任公司 | Apparatus and method for dewatering a material containing water |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19537286B4 (en) * | 1995-09-22 | 2006-03-23 | Dieffenbacher Gmbh + Co. Kg | Press for reducing the water content of sludge |
DE19535315B4 (en) * | 1995-09-22 | 2006-02-02 | Dieffenbacher Gmbh + Co. Kg | Dewatering e.g. raw brown coal - comprises preheating feed material, sealing in steam-tight pressure chamber, subjecting to steam injection and applying mechanical pressure |
DE19710708B4 (en) * | 1995-09-22 | 2009-01-29 | Dieffenbacher Gmbh + Co. Kg | Plant and press for reducing the water content of solid materials such as sludges and / or lignite coal and a control or regulating device therefor |
DE19710711A1 (en) * | 1995-09-22 | 1998-09-17 | Dieffenbacher Gmbh Maschf | Lignite dewatering under mechanical pressure, aided by superheated steam |
DE19606238A1 (en) * | 1996-02-20 | 1997-08-21 | Dieffenbacher Gmbh Maschf | Device for reducing the water content of hydrated brown coal |
DE19606152A1 (en) * | 1996-02-20 | 1997-08-21 | Karl Prof Dr Strauss | Process for reducing the water content of hydrated brown coal |
DE19606153C2 (en) * | 1996-02-20 | 2003-04-03 | Karl Strauss | Process for generating superheated steam for operating a steam power plant |
AU725794B2 (en) * | 1997-03-14 | 2000-10-19 | Maschinenfabrik J. Dieffenbacher Gmbh & Co. | Method, filter press as well as control and regulating device to reduce the water content of solid materials and/or sludges |
DE19742610A1 (en) | 1997-09-26 | 1999-04-01 | Karl Prof Dr Ing Straus | Fuel and air handling process for fossil fuel combustion plant, e.g. brown coal power plant |
DE19752653B4 (en) * | 1997-11-27 | 2007-08-16 | Dieffenbacher Gmbh + Co. Kg | Plant and filter press for dehumidifying pasty solids |
DE19914098C2 (en) * | 1999-03-27 | 2002-09-19 | Rwe Energie Ag | Process for dewatering raw lignite by centrifugation |
DE10346234A1 (en) * | 2003-10-06 | 2005-05-04 | Rag Ag | Cleaning conveyor for installation in discharge region of belt conveyor has conveyor belt consisting of water permeable material, and water collecting sump extending between reversing points of conveyor belt |
DE102004038235B4 (en) * | 2004-08-05 | 2013-01-31 | Rwe Power Ag | Process for the demineralization of lignite |
CN113091443B (en) | 2021-04-27 | 2022-05-24 | 中国矿业大学 | Transient dehydration upgrading and warm-pressing instant device system for lignite |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE359440C (en) * | 1920-04-24 | 1922-09-22 | Theodor Otto Franke | Process for dewatering peat u. like |
DE1080970B (en) * | 1954-01-05 | 1960-05-05 | Buckau Wolf Maschf R | Process for the pressure dewatering of raw peat pretreated with peat dust |
AU430626B2 (en) * | 1968-01-26 | 1972-11-26 | Universityof Melbourne | Separation of water from solid organic materials |
DE2436290A1 (en) * | 1974-07-27 | 1976-02-05 | Woldemar Oelkers | Continuous coking process - passing material through tapered gap between endless belts at high temperature |
DE4009883A1 (en) * | 1990-03-28 | 1991-10-02 | Siempelkamp Gmbh & Co | Press installation for mfr. of particle-boards - introduces steam in spacing gap between press belts |
-
1994
- 1994-09-27 DE DE4434447A patent/DE4434447A1/en not_active Withdrawn
-
1995
- 1995-09-26 CZ CZ97795A patent/CZ79597A3/en unknown
- 1995-09-26 DE DE59504443T patent/DE59504443D1/en not_active Expired - Lifetime
- 1995-09-26 WO PCT/EP1995/003814 patent/WO1996010064A1/en not_active Application Discontinuation
- 1995-09-26 JP JP8511376A patent/JPH10506145A/en not_active Ceased
- 1995-09-26 PL PL95319381A patent/PL319381A1/en unknown
- 1995-09-26 CN CN95195219A patent/CN1160418A/en active Pending
- 1995-09-26 AU AU36096/95A patent/AU695187B2/en not_active Ceased
- 1995-09-26 EP EP95933431A patent/EP0784660B1/en not_active Expired - Lifetime
- 1995-09-26 HU HU9702024A patent/HUT77187A/en unknown
- 1995-09-27 TR TR95/01177A patent/TR199501177A2/en unknown
-
1997
- 1997-03-26 FI FI971271A patent/FI971271A/en unknown
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102061211A (en) * | 2011-01-04 | 2011-05-18 | 内蒙古工业大学 | Integral purified integration system and process of lignite in cement production through catalytic mild pyrolysis |
CN103087796A (en) * | 2013-02-07 | 2013-05-08 | 中国矿业大学 | Process and system for vibration hot-pressing dehydration quality improvement of brown coal |
CN103087796B (en) * | 2013-02-07 | 2014-04-16 | 中国矿业大学 | Lignite vibration hot-pressing dehydration upgrading process and system |
CN106393777A (en) * | 2015-08-01 | 2017-02-15 | 辛北尔康普机器及成套设备有限责任公司 | Apparatus and method for dewatering a material containing water |
Also Published As
Publication number | Publication date |
---|---|
DE59504443D1 (en) | 1999-01-14 |
FI971271A0 (en) | 1997-03-26 |
EP0784660A1 (en) | 1997-07-23 |
DE4434447A1 (en) | 1996-03-28 |
PL319381A1 (en) | 1997-08-04 |
EP0784660B1 (en) | 1998-12-02 |
FI971271A (en) | 1997-03-26 |
CZ79597A3 (en) | 1997-07-16 |
AU3609695A (en) | 1996-04-19 |
WO1996010064A1 (en) | 1996-04-04 |
JPH10506145A (en) | 1998-06-16 |
HUT77187A (en) | 1998-03-02 |
AU695187B2 (en) | 1998-08-06 |
TR199501177A2 (en) | 1996-11-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN1160418A (en) | Method and device for reducing water content of water-contg. brown coal | |
FI69313C (en) | PROCEDURE FOR THE PRODUCTION OF ORGANIC FOLLOWING AGRICULTURAL COLUMN AEMNEN | |
AU717851B2 (en) | Process, plant and press for reducing the water content in raw lignite | |
CN103373801A (en) | Continuous dehydrating method and device for explosive production wastewater and sludge | |
CN1089344A (en) | Be convenient to fuel is added method and device in the pressurizing vessel | |
SE543500C2 (en) | Recovery of energy and chemicals from a steam explosion process | |
CN111646670A (en) | Multistage dehydration method and device | |
CN202643520U (en) | Wastewater sludge dewatering equipment | |
CN1268903A (en) | Heating with steam | |
GB2499970A (en) | System for removing moisture from coal | |
CN102531314B (en) | Sludge water heat drying treatment device and flashing reactor thereof | |
KR100483468B1 (en) | Hot Filter Press System | |
CN213141451U (en) | High-efficient dewatering system of coal gasification fine slag black water of many energy field step distributions | |
CN207342271U (en) | A kind of new and effective membrane filter-pressing device | |
CN101372625A (en) | Method for controlling coking coal humidity | |
CN1662138A (en) | Preservation of sugar cane and other plant materials | |
AU2013100196A4 (en) | Mechanical dewatering of brown coal | |
CN206188620U (en) | High -pressure dehydrator | |
RU2667868C1 (en) | Method for preliminary processing of lignocellulose biomass raw material | |
CN205635318U (en) | Mud decomposes drying device | |
KR20140042541A (en) | Apparatus for drying peat | |
AU617074B2 (en) | Process and system for low-temperature carbonization of oil shale, oil sands or similar oil-bearing solids | |
CN106746446A (en) | A kind of pressing dehydrator high | |
CN201581031U (en) | Sludge deep dehydration system | |
US5636451A (en) | Process for feeding sludge into a reactor for thermal disposal |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C01 | Deemed withdrawal of patent application (patent law 1993) | ||
WD01 | Invention patent application deemed withdrawn after publication |