CN85100817A - The package unit that is used for the drying of high-moisture brown coal - Google Patents
The package unit that is used for the drying of high-moisture brown coal Download PDFInfo
- Publication number
- CN85100817A CN85100817A CN 85100817 CN85100817A CN85100817A CN 85100817 A CN85100817 A CN 85100817A CN 85100817 CN85100817 CN 85100817 CN 85100817 A CN85100817 A CN 85100817A CN 85100817 A CN85100817 A CN 85100817A
- Authority
- CN
- China
- Prior art keywords
- coal
- dry
- autoclave
- package unit
- heating device
- 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.)
- Withdrawn
Links
Landscapes
- Solid Fuels And Fuel-Associated Substances (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The present invention relates to the dry factory of high-moisture brown coal, in this factory, will need dry coal preheating, use vapour cooking and dry down in superatmospheric pressure.The transporting equipment that it mainly comprises transporting equipment, wet screening, pre-heating device, airtight lock, autoclave, back drying equipment and transports moisture-free coal.
Description
The present invention relates to the package unit of high-moisture brown coal drying, in this package unit, will need dry coal preheating, use the dry again of vapour cooking down in superatmospheric pressure.
For the brown coal of dry high-moisture, existing suggestion is handled with saturated vapor needs dry coal with the colloform texture that destroys brown coal with make the brown coal contraction simultaneously, and the moisture in the brown coal capillary structure is displaced in the reduction increase that is accompanied by the viscosity of water.This method is celebrated with so-called Fu Lasina (Flei-Bner) method, realizes that the earliest the device of this method is made up of autoclave, and brown coal are packed into wherein in batches, periodically supplies with saturated vapor.After each is equipped with the autoclave step-down of coal of firm boiling, the coal of substantially dry can be drawn off.
In addition, it is also well known this method of carrying out with discontinuous manner originally to be changed into the suggestion of continuous or semi-continuous operation.Existing for this reason suggestion adopts drum screen in saturated vapour pressure running down, and it can discharge the moisture that initial treatment produced in the stage, has avoided heating only to be the moisture of refuse fully.
The objective of the invention is to propose a complete dry package unit, wherein adopt some ready-made equipment, can not add basically and revise and to be suitable for different production capacity and energy charge extremely low.Under this situation, used raw material is that granularity is 0.1 to 14 millimeter granular brown coal in the scope, wishes to obtain with low specific energy consumption the drying of height.For solving this task, the present invention is with the feature that consists of of following equipment.
A) transporting equipment is preferably a vibra shoot, is equipped with to spray the device of thermal wastewater on coal;
B) wet screening, particularly vibratory sieve are equipped with the equipment of supplying residue vapor;
C) transporting equipment, particularly steep conveyer belt is transported to airtight lock in order to the material that will sieve;
D) pre-heating device is connected with jet chimney and in charging place airtight lock is housed, and pre-heating device and airtight lock are preferably equipped infinite variable speed drive unit;
E) another airtight lock preferably is designed to infinitely variable speeds equally, in order to coal is discharged into autoclave from pre-heating device, with autoclave the steam supply is arranged, saturated vapor preferably, and selectively be connected with waste pipe through several pressure valve;
F) drum screen is housed in the autoclave, comprises preferably infinite variable speed rotating driving device and a delivery unit, particularly spiral conveyer;
G) another infinite variable speed airtight lock is discharged into drying equipment behind the next stage in order to the material with boiling;
H) the back drying equipment is preferably a vibrating drying equipment, be connected with gas such as steam, air or the inert gas of preheating, and;
I) equipment that dry coal is transported.
First transporting equipment directly links to each other with the bunker of feed coal, preferably it is designed to a vibra shoot, provides with plain mode directly to spray from the possibility of thermal wastewater on coal of back drying stage and therefore make the coal preheating.Mode has been utilized the waste heat in the process and has been reduced the load of wastewater collection channel, because carry along closing pipe line from the waste water in the process like this.Wet screening is subsequently removed remaining duff grain and the dust that adheres in an advantageous manner, notes it also being to use residue vapor from waste water further with the coal preheating at this.Transporting equipment then, being preferably designed as the raw material brown coal that steep conveyer belt supplies tentatively preheating in the mode of saving the space does not have any significant temperature loss to preheater, is connected with jet chimney and feed end is equipped with airtight lock according to preheater of the present invention.Thereby the material that can in this pre-heating device, need dewater with the further preheating of steam, have the autoclave of saturated vapor directly to couple together pre-heating device and confession by another the airtight lock that is contained in pre-heating device discharge end and autoclave feed end place, this provides the possibility that coal is transferred to autoclave in the mode of saving energy.Airtight lock between pre-heating device and the autoclave further provides the possibility that is used to want from the direct preheating of the exhaust steam of airtight lock the material of drying.According to waste pipe of the present invention is to be connected to the autoclave that adds saturated vapor through pressure valve, can discharge the moisture of displacing in the processing procedure by pressure valve, does not so need to be heated again.For the moisture in the separating treatment process reliably at utmost, in autoclave, install a drum screen that comprises rotating driving device.Preheater and autoclave can be operated at superatmospheric pressure, so directly send into the autoclave drying stage and carry out dry material owing to use the saturated vapor drying pretreated with optimum way.Connect another airtight lock behind the autoclave in order to the material that draws off boiling and make this material step-down, again with the back drying equipment make the part residual moisture under atmospheric pressure because of latent heat evaporates, introduce hot-air and strengthened desiccation.Back drying equipment is preferably designed as a vibrating drying equipment and the preheated air interface is arranged, and then with a common transporting equipment dry coal is transported.Product is cooled off and/or makes it stable and can additionally realize in the drying equipment of back.
The arrangement of each unit of factory of this initiative makes waste water and steam, and the two all follows loop and becomes possibility, the very big heat energy of part in the also recyclable dry run.For this purpose, preferably be connected to the container of setting up from the waste pipe of autoclave, it is connected with discharges CO
2, waste water and the pipeline of mud and the pipeline that passes to the step-down container.The container of setting up removes the CO that produces in order to separate with the saturated vapor moisture-free coal
2,, can deliver to the heat exchanger of preheated air immediately setting up waste water that container collects outward, also can isolate residue vapor simultaneously in order to be sprayed on the material of wanting dry also in order to the solid matter in the initial gross separation waste water.The steam that produces during step-down in the step-down container can be used for being provided with the preheating of the pre-heating device of airtight lock, notes in that pre-heating device-it comprises the feeder that the drum screen-isolated hot water that rotating driving device is housed can be sent into residue vapor through pressure valve.
Can supply with wet screening by the residue vapor of the waste water of residue vapor feeder gained and utilize the purpose of doing preheating once more.
One cleaner can be connected to the dry coal discharge pit of back drying equipment, makes it not have dust as far as possible.
Because recycle along loop by waste water and the steam that step-down equipment obtains according to the present invention, only waste water discharged from process in the single position of wet screening bottom.Have only herein the waste water of discharging need do wastewater treatment, and every other part of package unit or operation or get in touch with setting up on every side by cleaner under the complete closed condition.
Invention will be further ex-plained with reference to the appended drawings in following.
The raw material brown coal are discharged into first transporter 2 that is designed to vibra shoot by bunker 1, send into hot water spray thereon through pipe 3.So coal can be preheated to temperature and be about 40 ℃ to 60 ℃.Subsequently the coal of preheating is delivered on the wet screening, be provided with residue vapor and optionally be provided with waste water or vapoury air through managing 5.The material that adds is by further preheating.
The overflow of sieve has the granularity of 3-40mm and adds on the steep conveyer belt 6, arrives pre-heating device 8 through rotating airtight lock 7.In pre-heating device 8 inside drum screen 9 is arranged, its drive unit is with 10 expressions.Steam pipe 11 and waste pipe 12 are connected to pre-heating device 8.Pre-heating device 8 is designed to revolving airtight lock 13 and is connected with autoclave 14 through another.In autoclave 14, install a drum screen 15 that links to each other with rotating driving device 16 again.Saturated vapor pipeline 17 and waste pipe 18 are connected to autoclave 14.
In pre-heating device, under the pressure of 15 crust, coal can be preheated to 200 ℃ of the highest temperatures, preferably remain on the temperature range between 120 ℃ and 150 ℃.In autoclave 14, according to the kind of coal with need dry degree, under the pressure of height to 45 crust respectively with saturated vapor and can select for use vapours or superheated steam suitably with the coal drying.Discharging is to carry out through an airtight lock 19 that is designed to take turns lattice shape again.The airtight lock 19 of lattice shape is so far taken turns in back drying equipment 20 connections makes coal be subjected to the work of preheated air in order to realize last evaporation.Back drying equipment 20 is vibrating drying equipments and is connected with cleaner through pipe 21.Hot-air is to supply with through managing 22.With transporter 23 dry coal is transported.
Use superheated steam to carry out drying at autoclave, the degree of superheat of selection steam reaches capacity next step water evaporates of displacing from coal condition, this is particularly advantageous.When operating in this way, can save the fresh water and the energy that produce steam, thereby the condensation water quantity minimizing has also reduced wastewater flow rate to be processed thereafter.Under pressure, earlier the coal preheating can be simplified the utilization of superheated steam with steam, as long as consider the water content of the coal of preheating this moment.
Waste pipe 18 with set up container 24 and be connected.The water of from coal, displacing and be collected in these by the condensed water that the saturated vapor of supplying with produces and set up in the container.The CO that generates
2By managing 25 dischargings.Any solid matter is discharged through mud tube 26.Thermal wastewater is transferred to step-down container 28 through managing 27, makes steam regeneration thereby reduced pressure in this step-down container 28.Thermal wastewater is supplied with pre-heating device 29 with the required hot-air of heat drying equipment 20 and in arriving residue vapor feeders 31 after manage 30.The residue vapor of collecting in this feeder 31 is delivered to wet screening 4 through managing 5, and the thermal wastewater of remaining part is recycled to transporting equipment 2 through managing 3.Unnecessary waste water is delivered to wastewater treatment working section through managing 32.
Steam from step-down container 28 is supplied with pre-heating device 8 through managing 33.Thus pre-heating device 8 obtain and manage certainly 12 condensed waters of discharging can with merge through managing 30 waste water that are sent to residue vapor feeder 31.
It is favourable from blowing in the outside of drum screen screen cloth that the saturated vapor of sending into autoclave 14 forms flat jet with a row nozzle, can guarantee simultaneously that like this screen cloth of drum screen can not get clogged.Used drum screen mainly is out the screen cylinder of strip hole.When handling the coal of granularity from 3 to 40mm, but the drying equipment degree of filling of being made up of drum screen is operated under 60% the situation of its volume capacity and illustrated package unit in the production capacity of each drum screen drier can easily reach per hour 60 tonnes.The time that coal stops in autoclave 14 is selected according to granular size, selects the short time for the comparable larger particles of granule.The exemplary value of the established time of staying is as follows: for being 5 minutes by 5 to 20mm particle, 10 to 30mm particle is that 10 minutes and 20 to 40mm particle are 20 minutes.
Claims (6)
1, the package unit factory that is used for the high-moisture brown coal drying will need dry coal preheating in this package unit, down with vapour cooking and dry again, consist of its feature by following each several part in superatmospheric pressure:
A) transporting equipment (2) is preferably a vibra shoot, is equipped with to spray the device (3) of thermal wastewater on coal;
B) wet screening (4) is preferably a vibratory sieve, is installed on the device (5) of supply residue vapor;
C) transporting equipment (6) is actually the steep conveyer belt of platform, in order to carry the material that had sieved to airtight lock (7);
D) pre-heating device (8) is equipped with airtight lock (7) at feed end, also is connected pre-heating device and the infinite variable speed drive unit of the best fit on of airtight lock with steam pipe (11);
E) another airtight lock (13), preferably be designed to infinitely variable speeds equally, in order to coal is discharged into autoclave (14) from pre-heating device (8), the predetermined steam that is provided with of this autoclave, saturated vapor preferably, and selectively be connected with waste pipe (12) through several pressure valve;
F) drum screen (15) and comprising-preferably infinite variable speed drive unit (16) and delivery unit is housed in the autoclave (14), is actually spiral conveyer;
G) another, preferably infinite variable speed airtight lock (19) in order to the material with boiling be discharged into the back drying equipment (20);
H) back drying equipment (20) is preferably a vibrating drying equipment, and the gas of a preheating such as the interface of steam, air or inert gas are arranged, and
I) equipment (23) is in order to transport dry coal.
2, according to the dry package unit in the claim 1, it is characterized by waste pipe (18) from autoclave (14) and be connected to and set up container (24), this container is connected with CO
2With mud emission pipe (25,26) and the thermal wastewater pipe (27) that passes to step-down container (28).
3,, it is characterized by the step-down steam that forms at step-down container (28) and be connected to the pre-heating device (8) that airtight lock (7,13) are housed through pipe (33) according to the dry package unit in the claim 2.
4,, it is characterized by the thermal wastewater of step-down container (28) is supplied with the heat exchanger (29) of preheating and drying air and will be delivered to wet screening (4) in the residue vapor in the residue vapor feeder (31) that links to each other with heat exchanger according to the dry package unit in claim 2 or 3.
5,, it is characterized by a thermal wastewater of residue vapor feeder (31) and be used to be sprayed at the raw material brown coal according to the dry package unit in the claim 4.
6, according to the dry package unit in any claim 1 to 5, it is characterized by airtight lock (7 is housed, 13) pre-heating device (8) includes the drum screen (9) that has assembled rotating driving device (10), and the hot water of wherein telling can be supplied with residue vapor feeder (31) through pressure valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85100817A CN85100817B (en) | 1985-04-01 | 1985-04-01 | The package unit that is used for the high-moisture brown coal drying |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85100817A CN85100817B (en) | 1985-04-01 | 1985-04-01 | The package unit that is used for the high-moisture brown coal drying |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85100817A true CN85100817A (en) | 1987-01-10 |
| CN85100817B CN85100817B (en) | 1988-10-19 |
Family
ID=4791442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN85100817A Expired CN85100817B (en) | 1985-04-01 | 1985-04-01 | The package unit that is used for the high-moisture brown coal drying |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85100817B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101445739B (en) * | 2008-12-26 | 2012-07-25 | 清华大学 | Method for drying lignite through horizontal moving bed |
| CN103206839A (en) * | 2013-04-26 | 2013-07-17 | 上海第二工业大学 | Continuous operation system for carrying out hot pressing, drying and dehydrating on high-moisture sticky or non-sticky wet stocks |
| CN101724480B (en) * | 2004-05-03 | 2013-07-24 | 长青能源公司 | Method for thermally upgrading carbonaceous materials |
| CN103411412A (en) * | 2013-07-13 | 2013-11-27 | 苏州市自力化工设备有限公司 | Brown coal drying machine |
| WO2014107916A1 (en) * | 2013-01-11 | 2014-07-17 | Cai Jingpeng | Drying apparatus for lignite particles and pulverized coal after granulation |
| CN104081143A (en) * | 2011-12-15 | 2014-10-01 | 韩国技术有限公司 | System for drying coal by using superheated steam |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101285587B (en) * | 2008-03-28 | 2010-10-13 | 中国神华能源股份有限公司 | Low metamorphic grade coal drying and dewatering process |
-
1985
- 1985-04-01 CN CN85100817A patent/CN85100817B/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101724480B (en) * | 2004-05-03 | 2013-07-24 | 长青能源公司 | Method for thermally upgrading carbonaceous materials |
| CN101445739B (en) * | 2008-12-26 | 2012-07-25 | 清华大学 | Method for drying lignite through horizontal moving bed |
| CN104081143A (en) * | 2011-12-15 | 2014-10-01 | 韩国技术有限公司 | System for drying coal by using superheated steam |
| WO2014107916A1 (en) * | 2013-01-11 | 2014-07-17 | Cai Jingpeng | Drying apparatus for lignite particles and pulverized coal after granulation |
| CN103206839A (en) * | 2013-04-26 | 2013-07-17 | 上海第二工业大学 | Continuous operation system for carrying out hot pressing, drying and dehydrating on high-moisture sticky or non-sticky wet stocks |
| CN103411412A (en) * | 2013-07-13 | 2013-11-27 | 苏州市自力化工设备有限公司 | Brown coal drying machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN85100817B (en) | 1988-10-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4628619A (en) | Drying plant for brown coals of high water content | |
| CA2006507C (en) | Method for drying sludge | |
| US5290523A (en) | Method and apparatus for upgrading carbonaceous fuel | |
| US20080006519A1 (en) | Method and system for accomplishing flash or fast pyrolysis with carbonaceous materials | |
| CA1261618A (en) | Method of drying material by indirect heating | |
| JP2002543268A (en) | Method for producing activated carbon by carbonizing wood residue | |
| CA2658228A1 (en) | Counter flow cooling drier with integrated heat recovery | |
| CN101560405A (en) | Method for preparing liquid fuels by self-heating self-circulating thermal cracking of biomass and device thereof | |
| SE464260B (en) | SET AND APPLIANCE FOR DRYING OF LOW COALS | |
| CN110108106B (en) | Continuous automatic drying device and method | |
| US4444129A (en) | Method of drying fine coal particles | |
| CN85100817A (en) | The package unit that is used for the drying of high-moisture brown coal | |
| GB2074299A (en) | Method and Apparatus for Heating Particulate Material | |
| CN209383705U (en) | Pyrolysis of coal device | |
| CN101312924B (en) | Method and apparatus for treating lime mud | |
| US5137545A (en) | Vapor clarification system and method | |
| US4240877A (en) | Method for preheating coal for coking | |
| CA1046010A (en) | Converter system | |
| US4523906A (en) | Device for drying gypsum | |
| CN109731667A (en) | A kind of coal becomes amplitude vibrating fluidized bed dried, classified system and method for separating | |
| CN210399853U (en) | Multilayer mesh belt dryer | |
| CN101864334B (en) | Integrated implementation technique for preparing clean coal from lignite and comprehensively utilizing lignite | |
| US4568425A (en) | Pyrolysis machine and process | |
| WO1997034679A1 (en) | Sludge drying apparatus and process | |
| CN102604660B (en) | Moisture control grading system and moisture control grading method for materials |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |