CN103146409A - Lignite drying/low-temperature carbonization method with function of conducting heat by steam - Google Patents
Lignite drying/low-temperature carbonization method with function of conducting heat by steam Download PDFInfo
- Publication number
- CN103146409A CN103146409A CN201310079891XA CN201310079891A CN103146409A CN 103146409 A CN103146409 A CN 103146409A CN 201310079891X A CN201310079891X A CN 201310079891XA CN 201310079891 A CN201310079891 A CN 201310079891A CN 103146409 A CN103146409 A CN 103146409A
- Authority
- CN
- China
- Prior art keywords
- steam
- drying shed
- low
- oven dry
- drying
- 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
-
- 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
-
- 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
- C10F5/06—Drying or de-watering peat combined with a carbonisation step for producing turfcoal
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
- F26B3/06—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
- F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers
Abstract
The invention discloses a lignite drying/low-temperature carbonization method with a function of conducting heat by steam. The method comprises the steps of: after putting a material to be dried into more than two drying chambers which are sequentially communicated, and sealing, introducing steam into one drying chamber, stopping feeding the steam until the drying chamber is full of steam and with a required steam pressure, and starting a heating device in the drying chamber; and when the steam temperature raises to exceed the burning point of the material, prolonging the heating time to achieve the low-temperature carbonization of the material. Overpressure steam generated in the drying chamber in the material heating process is discharged into the next sealed drying chamber in which the martial to be heated is put, and so forth, the upstream drying chamber recycles the overpressure steam discharged by the previous drying chamber to preheat and dry as shown in step two; and the generated condensate water is drained from a condensate water drain outlet. The lignite subjected to drying/low-temperature carbonization is obviously reduced in moisture, greatly reduced in size, increased in particle strength, and low in production input cost, and is simultaneously suitable for the drying process of other materials.
Description
Technical field
The present invention relates to oven dry and the low-temperature pyrolysis technology of material, especially relate to the particle of brown coal and oven dry/low-temperature cracking process and the device thereof after the fine coal granulation.This oven dry and low-temperature pyrolysis technology are equally applicable to the drying processing of the materials such as vegetables and fruits, timber.
Background technology
A large amount of research trials have been done for the technical matters of the moisture raising ature of coal that reduces brown coal both at home and abroad for many years, the method that adopts is of a great variety, but there is no the proven technique flow process, there are many drawbacks, be mainly: the 1. coal after the oven dry or have the shortcoming of brown coal fully, easily spontaneous combustion, weathering, easily suction is got damp.Low because of the brown coal burning-point when 2. dry method is dried, dangerous large during hot-air seasoning, the even blast of easily catching fire, it is poor that degree is controlled in environmental pollution; Dry with fluidized-bed during wet method (steam) oven dry, steam consumption is large, and power consumption is large, and production cost is high, and equipment manufacturing cost is expensive.3. drying plant is complicated, is difficult to maximize produce, and cost of investment is high.When 4. drying in material the latent heat of vaporization of moisture be difficult to recycle, energy consumption is high, production cost is high.
Summary of the invention
For problems of the prior art, the object of the invention is to provide a kind of method of brown coal oven dry/low-temperature pyrolysis.Brown coal moisture after the method oven dry/low-temperature pyrolysis reduces significantly, and resorption is minimum, and the unit thermal value increases substantially, and volume significantly dwindles, and granule strength increases, and produces input cost low, is applicable to simultaneously the drying processing of other material.
The present invention solves the technical scheme that its technical problem takes:
A kind of brown coal oven dry/low-temperature cracking process of steam heat conduction, its oven dry/low-temperature pyrolysis step is as follows:
Step 1, material is prepared: material to be dried is put into the drying shed that continues mutually connection more than two also airtight; Be provided with heating unit and condensate drain outlet in each drying shed; Each drying shed passes into steam by inlet pipe, is communicated with the inlet pipe of next drying shed by escape pipe, is communicated with by that analogy follow-up drying shed;
Further, the vapor temperature in step 2 raises and surpasses the burning-point of material, extends heat-up time, to realize that material is carried out low-temperature pyrolysis.
Further, when the overvoltage steam that the drying shed that is positioned at upstream drying shed on reclaiming it enters carried out preheating and oven dry, that a upper drying shed of completing oven dry can carry out simultaneously was cooling, discharging and charging.
Further, described oven dry/low-temperature cracking process is equally applicable to unclassified stores.
Compared with prior art, the invention has the beneficial effects as follows:
Drying technology of the present invention is take superheated vapour as heating agent, compared with prior art, the invention has the beneficial effects as follows:
1. take superheated vapour as heating agent, make inflammable brown coal material not contact oxygen in drying process, without the danger of burning, blast, safe.
2. the superheated vapour thermal conductivity as heating agent is high, and drying efficiency is high.
3. the brown coal material is in the oven-dried condition of inactive in drying shed, is conducive to the modification of brown coal particle, and the brown coal particle volume is dwindled, and strength increase does not get damp, not spontaneous combustion, not efflorescence, good drying effect.
4. in airtight drying shed, can guarantee effectively that the brown coal particle dries under the temperature and pressure of the best, steam consumption is little.
5. after the brown coal material moisture in the oven dry is condensed into water and discharges, can recycle, the most of recovery of the latent heat of vaporization of steam carried out preheating and the oven dry of next drying shed brown coal material, and production cost is low, environmental protection.
6. adopt the drying shed of continuous connection mutually as the major equipment of oven dry, the drying shed technical parameter is low, and equipment manufacturing cost is low, and is easy to maximize, and the heavy industrialization application program is simple.
7. raising in vapor temperature surpasses the burning-point of brown coal, and extends heat-up time, can realize brown coal are carried out low-temperature pyrolysis.
8. oven dry/low-temperature cracking process of the present invention and equipment thereof, be equally applicable to the drying processing of unclassified stores (as vegetables and fruits, timber etc.).
Description of drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, consists of a part of the present invention, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is that the present invention is dried/structural representation (in figure, arrow is the steam flow direction) of low-temperature pyrolysis equipment.
Embodiment
In order to make technical problem to be solved by this invention, technical scheme and beneficial effect clearer, clear, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
A kind of brown coal oven dry/low-temperature cracking process of steam heat conduction, its oven dry/low-temperature pyrolysis step is as follows:
Step 1, the brown coal material is prepared
Brown coal 5 to be dried are put into continued mutually the drying shed 1 that is communicated with more than two ... N is also airtight.The charging method of brown coal 5 to be dried is beneficial to be heated evenly and is as the criterion, and can be truck, charging basket, hopper or other charging method.
The continuous drying shed 1 that is communicated with mutually more than two as shown in Figure 1 ... be provided with heating unit 3 and condensate drain outlet 4 in each drying shed in N.Device or the outside device to drying shed heat conduction of described heating unit 3 for producing thermal source, as be placed in electric heater unit in drying shed, or the device by pipeline superheated vapour, thermal oil, the heat conduction of cigarette vapour hot blast; Described condensate drain outlet 4 connects a water discharge valve and is arranged on bottom drying shed.As shown in Figure 1, the first drying shed 1 passes into steam by inlet pipe 11, is communicated with the inlet pipe 21 of next drying shed 2 by escape pipe 12, and the escape pipe 22 of drying shed 2 connects the inlet pipe of follow-up drying shed, is communicated with by that analogy follow-up drying shed N.Escape pipe 12 and 21 of inlet pipe in adjacent connection are provided with automatic air valve 6.
pass into steam for one of them drying shed, the drying shed that the present embodiment passes into steam is the first drying shed 1, (vapor pressure is higher until this first drying shed 1 is full of steam and reaches predetermined vapor pressure, its vapour density is larger, thermal conductivity is higher, drying time is shorter, but corresponding drying shed technical parameter requires higher) after, stop feeding steam, and begin to start heating unit 3 in this first drying shed 1 to the steam heating of 1 li of this first drying shed, heated steam is through the condensation heat release, the heat exchange patterns such as convection current, heat is passed to brown coal 5 to be dried dries.
The continuous heating steam of heating unit 3 in this first drying shed 1, steam is constantly dried again brown coal 5 to be dried, moisture in brown coal constantly evaporates effusion, the vapor pressure that this first drying shed is 1 li constantly raises, when meeting or exceeding predetermined vapor pressure, automatic air valve 6 on adjacent connection escape pipe 12 and inlet pipe 21 is opened automatically, and steam is entered to another airtight drying shed 2 of having filled brown coal 5 to be dried.The rest may be inferred, is positioned at the recyclable steam that surpasses predetermined vapor pressure that drying shed enters on it of the drying shed in downstream and carries out preheating as described in step 2 and oven dry, environmental protection and be easy to control.Simultaneously, adding a large amount of water of condensation that in the thermal material process, drying shed produces discharges from the condensate drain outlet 4 bottom drying shed.
Vapor temperature in step 2 raises and surpasses the burning-point of brown coal, extends heat-up time, to realize that brown coal are carried out low-temperature pyrolysis.
When the overvoltage steam that the drying shed that the present invention is positioned at upstream drying shed on reclaiming it enters carries out preheating and oven dry, that a upper drying shed of completing oven dry can carry out simultaneously is cooling, discharging and charging, it is same that the rest may be inferred, to bring into play the usefulness of each drying shed maximum.
Above-mentioned explanation illustrates and has described the preferred embodiments of the present invention, as previously mentioned, be to be understood that the present invention is not limited to the disclosed form of this paper, should not regard the eliminating to other embodiment as, and can be used for various other combinations, modification and environment, and can in invention contemplated scope described herein, change by technology or the knowledge of above-mentioned instruction or association area.And the change that those skilled in the art carry out and variation do not break away from the spirit and scope of the present invention, all should be in the protection domain of claims of the present invention.
Claims (5)
1. the brown coal oven dry/low-temperature cracking process of a steam heat conduction, it is characterized in that: oven dry/low-temperature pyrolysis step is as follows:
Step 1, material is prepared: material to be dried is put into the drying shed that continues mutually connection more than two also airtight; Be provided with heating unit and condensate drain outlet in each drying shed; Each drying shed passes into steam by inlet pipe, is communicated with the inlet pipe of next drying shed by escape pipe, is communicated with by that analogy follow-up drying shed;
Step 2, preheating and oven dry: pass into steam for one of them drying shed, until after drying shed is full of steam and reaches required vapor pressure, stop feeding steam, and begin to start heating unit in this drying shed to the steam heating in drying shed;
Step 3, steam cycle is utilized: add the overvoltage steam that in the thermal material process, drying shed produces and enter the next airtight drying shed of having put into material to be dried, the rest may be inferred, and the drying shed that is positioned at the upstream reclaims on it overvoltage steam that drying shed enters and carries out preheating as described in step 2 and oven dry; Simultaneously, adding the water of condensation that in the thermal material process, drying shed produces discharges from condensate drain outlet.
2. the brown coal oven dry/low-temperature cracking process of a kind of steam heat conduction as claimed in claim 1 is characterized in that: the vapor temperature in step 2 raises and surpasses the burning-point of material, extends heat-up time, to realize that material is carried out low-temperature pyrolysis.
3. the brown coal oven dry/low-temperature cracking process of a kind of steam heat conduction as claimed in claim 1 or 2, it is characterized in that: when the overvoltage steam that the drying shed that is positioned at upstream drying shed on reclaiming it enters carried out preheating and oven dry, that a upper drying shed of completing oven dry can carry out simultaneously was cooling, discharging and charging.
4. the brown coal oven dry/low-temperature cracking process of a kind of steam heat conduction as claimed in claim 1 or 2, it is characterized in that: described oven dry/low-temperature cracking process is equally applicable to unclassified stores.
5. the brown coal oven dry/low-temperature cracking process of a kind of steam heat conduction as claimed in claim 3, it is characterized in that: described oven dry/low-temperature cracking process is equally applicable to unclassified stores.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310079891XA CN103146409A (en) | 2013-03-13 | 2013-03-13 | Lignite drying/low-temperature carbonization method with function of conducting heat by steam |
| PCT/CN2013/072661 WO2014139136A1 (en) | 2013-03-13 | 2013-03-15 | Method for drying and low-temperature carbonization of lignite by steam heat conduction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310079891XA CN103146409A (en) | 2013-03-13 | 2013-03-13 | Lignite drying/low-temperature carbonization method with function of conducting heat by steam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103146409A true CN103146409A (en) | 2013-06-12 |
Family
ID=48544738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310079891XA Pending CN103146409A (en) | 2013-03-13 | 2013-03-13 | Lignite drying/low-temperature carbonization method with function of conducting heat by steam |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103146409A (en) |
| WO (1) | WO2014139136A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103333703A (en) * | 2013-06-22 | 2013-10-02 | 蔡京鹏 | Drying or low-temperature destructive distillation method and device of brown coal or low-deterioration long flame coal |
| WO2014139136A1 (en) * | 2013-03-13 | 2014-09-18 | Cai Jingpeng | Method for drying and low-temperature carbonization of lignite by steam heat conduction |
| WO2015013990A1 (en) * | 2013-07-29 | 2015-02-05 | Cai Jingpeng | Method and apparatus for drying and dry distillation or pyrolysis, in which the majority of the heat of vaporization can be recycled |
| CN104890084A (en) * | 2015-06-10 | 2015-09-09 | 南京林业大学 | Energy-saving type wood heat treatment kiln and wood heat treatment method thereof |
| CN106047441A (en) * | 2016-07-13 | 2016-10-26 | 青岛松灵电力环保设备有限公司 | Brown coal drying and upgrading system |
| CN107826354A (en) * | 2017-11-23 | 2018-03-23 | 湖北酷我乳业股份有限公司 | A kind of film drier unit |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109135787A (en) * | 2018-10-26 | 2019-01-04 | 郑州鼎力新能源技术有限公司 | Coal drying, destructive distillation method for upgrading and equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101581532A (en) * | 2009-06-04 | 2009-11-18 | 山东天力干燥设备有限公司 | Multi-effect system and process for pre-drying lignite through overheated steam |
| CN101769669A (en) * | 2009-01-05 | 2010-07-07 | 黄龙 | Reusable supercharging superheat steam drying method and device |
| CN102144137A (en) * | 2008-07-09 | 2011-08-03 | 斯凯能源控股有限公司 | Upgrading carbonaceous materials |
| CN102417823A (en) * | 2011-10-21 | 2012-04-18 | 山东天力干燥股份有限公司 | Drying and dry distillation combined quality improving process and system for low rank coal |
| CN102564095A (en) * | 2012-02-14 | 2012-07-11 | 李树田 | Lignite drying device by aid of low-pressure superheated steam and method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102504881A (en) * | 2011-08-23 | 2012-06-20 | 余式正 | Novel garbage carbonization-gasification furnace for garbage disposal |
| KR101216814B1 (en) * | 2011-12-15 | 2012-12-28 | 한국서부발전 주식회사 | System for drying coal using super-heated steam of multiple heated high temperature |
| CN102766475B (en) * | 2012-07-05 | 2014-08-20 | 北京神雾环境能源科技集团股份有限公司 | Method and system for performing drying and dry distillation on fluidized bed pulverized coal based on overheating steam medium |
| CN203174037U (en) * | 2013-03-13 | 2013-09-04 | 蔡京鹏 | Steam heat conduction lignite drying/low-temperature dry distillation equipment |
| CN103146409A (en) * | 2013-03-13 | 2013-06-12 | 蔡京鹏 | Lignite drying/low-temperature carbonization method with function of conducting heat by steam |
-
2013
- 2013-03-13 CN CN201310079891XA patent/CN103146409A/en active Pending
- 2013-03-15 WO PCT/CN2013/072661 patent/WO2014139136A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102144137A (en) * | 2008-07-09 | 2011-08-03 | 斯凯能源控股有限公司 | Upgrading carbonaceous materials |
| CN101769669A (en) * | 2009-01-05 | 2010-07-07 | 黄龙 | Reusable supercharging superheat steam drying method and device |
| CN101581532A (en) * | 2009-06-04 | 2009-11-18 | 山东天力干燥设备有限公司 | Multi-effect system and process for pre-drying lignite through overheated steam |
| CN102417823A (en) * | 2011-10-21 | 2012-04-18 | 山东天力干燥股份有限公司 | Drying and dry distillation combined quality improving process and system for low rank coal |
| CN102564095A (en) * | 2012-02-14 | 2012-07-11 | 李树田 | Lignite drying device by aid of low-pressure superheated steam and method |
Non-Patent Citations (1)
| Title |
|---|
| 史勇春等: "过热蒸汽干燥技术的研究进展", 《干燥技术与设备》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014139136A1 (en) * | 2013-03-13 | 2014-09-18 | Cai Jingpeng | Method for drying and low-temperature carbonization of lignite by steam heat conduction |
| CN103333703A (en) * | 2013-06-22 | 2013-10-02 | 蔡京鹏 | Drying or low-temperature destructive distillation method and device of brown coal or low-deterioration long flame coal |
| CN103333703B (en) * | 2013-06-22 | 2015-06-10 | 蔡京鹏 | Drying or low-temperature destructive distillation method and device of brown coal or low-deterioration long flame coal |
| WO2015013990A1 (en) * | 2013-07-29 | 2015-02-05 | Cai Jingpeng | Method and apparatus for drying and dry distillation or pyrolysis, in which the majority of the heat of vaporization can be recycled |
| CN104890084A (en) * | 2015-06-10 | 2015-09-09 | 南京林业大学 | Energy-saving type wood heat treatment kiln and wood heat treatment method thereof |
| CN106047441A (en) * | 2016-07-13 | 2016-10-26 | 青岛松灵电力环保设备有限公司 | Brown coal drying and upgrading system |
| CN107826354A (en) * | 2017-11-23 | 2018-03-23 | 湖北酷我乳业股份有限公司 | A kind of film drier unit |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014139136A1 (en) | 2014-09-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103146409A (en) | Lignite drying/low-temperature carbonization method with function of conducting heat by steam | |
| CN106179285B (en) | A kind of method of high-temperature thermal regeneration activated carbon | |
| CN101776371B (en) | Superheated steam rotary drying and steam tail gas indirect rotary drying method for lignite | |
| CN103771680B (en) | Sequencing batch waste heat recovery vacuum drying device | |
| CN103060048A (en) | Method and equipment for drying lignite particles and pulverized coal granules | |
| CN103242876A (en) | Drying or low-temperature dry distillation method and device of brown coal or low-metamorphic candle coal | |
| CN202135654U (en) | Tea leaf drier | |
| CN203174037U (en) | Steam heat conduction lignite drying/low-temperature dry distillation equipment | |
| CN101532769B (en) | New dry heat reutilization method | |
| CN102759257A (en) | Biomass drying system applied to biomass power generation system | |
| CN204693985U (en) | A kind of drying baker | |
| CN102748923B (en) | Method for drying coal slime | |
| CN103333703B (en) | Drying or low-temperature destructive distillation method and device of brown coal or low-deterioration long flame coal | |
| CN103017501A (en) | Wet object drying method and wet object drying device | |
| CN103409153B (en) | Biomass flash continuous carbonization technique | |
| KR101530909B1 (en) | System for Reducing Quantity of Low Level Radioactive Waste using Superheated Vapor | |
| CN101372625A (en) | Method for controlling coking coal dampness | |
| CN103983088A (en) | System and method for predrying lignite and recycling water by using waste heat of power station | |
| CN204154060U (en) | A kind of apparatus for baking of lithium ion battery | |
| CN206276399U (en) | A kind of preparation system of giantreed biomass carbon adsorbent | |
| CN203229489U (en) | Drying or smouldering device for lignite or low metamorphic long-flame coal | |
| CN105387689B (en) | Vacuum lignite drying device and using method thereof | |
| CN103175186A (en) | Atmospheric steam domestic boiler | |
| CN202361773U (en) | Energy saving device for solar drying of grease blanks | |
| CN206724636U (en) | A kind of device drying oven of compact household electrical appliances two |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130612 |