CN106675598A - Dry distillation method - Google Patents
Dry distillation method Download PDFInfo
- Publication number
- CN106675598A CN106675598A CN201611116000.3A CN201611116000A CN106675598A CN 106675598 A CN106675598 A CN 106675598A CN 201611116000 A CN201611116000 A CN 201611116000A CN 106675598 A CN106675598 A CN 106675598A
- Authority
- CN
- China
- Prior art keywords
- biomass
- heating
- dry distillation
- pyrolysis
- temperature
- 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.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/02—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of cellulose-containing material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/08—Non-mechanical pretreatment of the charge, e.g. desulfurization
- C10B57/10—Drying
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
Abstract
The invention discloses a dry distillation method. The method comprises the following steps: (1) carrying out drying: heating biomass at the temperature of 270 DEG C to 280 DEG C, and exhausting water vapor; (2) carrying out pyrolysis: heating the temperature of the dried biomass to 275 DEG C to 400 DEG C, carrying out maintaining for 20 to 40 minutes; heating the temperature of the dried biomass to 500 DEG C to 580 DEG C continuously, and carrying out maintaining for 1 to 3 hours. According to the dry distillation method, gas generated from a pyrolysis process is directly used as a fuel, so that the whole dry distillation process does not consume other fuels and does not pollute environment.
Description
Technical field
The present invention relates to charring process field, especially a kind of charing method.
Background technology
Charing, also known as destructive distillation (dry distillation), is that solid fuel is carried out into heat chemistry processing method, by coal, wood
Material, oil shale etc. are decomposed into gas (coal gas), liquid (tar) and solid (coke) product in isolation heated under air, and tar steams
Gas is escaped with coal gas from coke oven, can be recycled, and coke is then released by coke oven.Organic compound heat point in the case where air is completely cut off
It is carbon and other products to solve, and compound (such as carbohydrate) dehydration of carbon containing, hydrogen, oxygen is formed into charcoal with strong water absorbent (concentrated sulfuric acid)
Effect be also referred to as charing.
The content of the invention
The present invention in view of the shortcomings of the prior art, proposes a kind of charing method, and easy to operate, charred effect is good.
In order to realize foregoing invention purpose, the present invention provides following technical scheme：A kind of charing method, including following step
Suddenly：
(1), dry：Biomass discharge vapor in 270~280 DEG C of heating；
(2), it is pyrolyzed：Biomass after drying, are warming up to 275~400 DEG C, maintain 20~40min；500~580 DEG C are continuously heating to,
Maintain 1~3h.
Further, oxygen-supplying amount is increased in 500~580 DEG C of pyrolytic process, stopping is outer to supply fuel.
Further, it is 600~1000 DEG C that biomass continue to heat up after pyrolysis, collects gaseous product.
What is discharged in the past at 275 DEG C Celsius is all vapor, and this process is exactly the drying process of pyrolysis, and water content is more
Material, this process is more long, and the gasification furnace gas making time is more long, because only that moisture content has been evaporated could start pyrolysis；When
After moisture content in raw material is evaporated, with the rising of temperature, the pre- carbonization stage of second stage of carbonization is entered, in raw material
The labile element such as hemicellulose start to decompose, at this moment start to produce cigarette, open recovered flue gas valve, at this moment the gas calorific value of output is very
It is low, mainly CO2, CO and a small amount of acetic acid is with gasification furnace gas, it is necessary to be used in mixed way, that is to say, that there is still a need for constantly additional
Heat is.When temperature continues to rise, during more than 500 DEG C Celsius, raw material starts to accelerate to decompose, as temperature is improved, decomposition rate
Biomass through pyrolysis process and product are accelerated, and generate a large amount of analytes, such as methane, ethane, ethene, acetic acid, methyl alcohol, propyl alcohol, wood
Tar etc., at this moment completely opens getter valve, allows flue gas to fully enter cleaning system, continues to heat retort after treatment, can
To say that this stage can just make reaction go on without external heat, gasification furnace is closed, and gas making work stops.This stage claims
It is the pyrolysis charring stage.The carbonization primary product of biomass was formed in this stage.Particularly pyrolkigneous liquid, wood are burnt
Oil is virtually all formed at this stage.At this moment the product for obtaining has charcoal, combustible gas, wood tar, pyrolkigneous liquid, wherein
The yield highest of charcoal, combustible gas yield energy ample supply itself charing, tar wood vinegar is separated with special in gas cleaning way
Device is collected.Raw material per ton can produce charcoal 330~400kg Celsius.
Pyrolytic process continues, and tolerance and calorific value continue to increase, and into calcination stage, calcination stage temperature may be up to taking the photograph
600 DEG C of family name, 700 DEG C, or even more than 1000 DEG C Celsius.Calcination stage no longer produces pyrolkigneous liquid and tar with the rising of temperature,
And wood gas is merely creating, wherein mainly CH4And H2, can greatly improve the calorific value of wood gas.For example at 1000 DEG C Celsius
Pyrolysis, the calorific value of wood gas is up to 6000 kilocalories Celsius/m3, and the yield of charcoal only has 220~230kg Celsius（Original per ton
Material）.Of particular note is that：Calcination stage is the endothermic reaction, that is to say, that need external heat.So from energy balance angle
See, be not that the higher the better for pyrolysis temperature.Which type of pyrolysis temperature selected actually in actual production, because when, because ground, because
Product structure, because production purpose depending on, the control of pyrolysis temperature can be adjusted by switch board.
Compared with prior art, the present invention has advantages below：Directly by the use of pyrolytic process produce gas as fuel,
So that whole carbonization process does not consume other fuel, it is free from environmental pollution.
Specific embodiment
With reference to embodiment, the present invention will be described in detail, the description of this part be only it is exemplary and explanatory, no
Reply protection scope of the present invention has any restriction effect.
Embodiment 1
A kind of charing method, comprises the following steps：
(1), dry：Biomass discharge vapor in 270 DEG C of heating；
(2), it is pyrolyzed：Biomass after drying, are warming up to 400 DEG C, maintain 20min；580 DEG C are continuously heating to, 1h is maintained.
Embodiment 2
A kind of charing method, comprises the following steps：
(1), dry：Biomass discharge vapor in 280 DEG C of heating；
(2), it is pyrolyzed：Biomass after drying, are warming up to 275 DEG C, maintain 40min；500 DEG C are continuously heating to, 3h is maintained.
Wherein, oxygen-supplying amount is increased in 500 DEG C of pyrolytic process, stopping is outer to supply fuel.
Embodiment 3
A kind of charing method, comprises the following steps：
(1), dry：Biomass discharge vapor in 275 DEG C of heating；
(2), it is pyrolyzed：Biomass after drying, are warming up to 350 DEG C, maintain 30min；540 DEG C are continuously heating to, 2h is maintained.
It is 600~1000 DEG C that biomass continue to heat up after pyrolysis, collects gaseous product.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (3)
1. a kind of charing method, it is characterised in that：Comprise the following steps：
(1), dry：Biomass discharge vapor in 270~280 DEG C of heating；
(2), it is pyrolyzed：Biomass after drying, are warming up to 275~400 DEG C, maintain 20~40min；500~580 DEG C are continuously heating to,
Maintain 1~3h.
2. charing method as claimed in claim 1, it is characterised in that：Increase oxygen-supplying amount in 500~580 DEG C of pyrolytic process, stop
It is only outer to supply fuel.
3. charing method as claimed in claim 1 or 2, it is characterised in that：It is 600~1000 that biomass continue to heat up after pyrolysis
DEG C, collect gaseous product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611116000.3A CN106675598A (en) | 2016-12-07 | 2016-12-07 | Dry distillation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611116000.3A CN106675598A (en) | 2016-12-07 | 2016-12-07 | Dry distillation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106675598A true CN106675598A (en) | 2017-05-17 |
Family
ID=58869565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611116000.3A Pending CN106675598A (en) | 2016-12-07 | 2016-12-07 | Dry distillation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106675598A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101028926A (en) * | 2006-03-03 | 2007-09-05 | 郭梦雄 | Process for producing super-fine high-purity white carbon from rice hull and burning heat |
| CN101077979A (en) * | 2007-03-15 | 2007-11-28 | 王永森 | Method for preparing machine-made charcoal |
| CN101921604A (en) * | 2010-08-30 | 2010-12-22 | 浙江建中竹业科技有限公司 | Dry distillation charring method for bamboos |
| CN105600790A (en) * | 2014-09-16 | 2016-05-25 | 王开辉 | Method for co-producing ultra-pure nano-silica and biological oil by using rice husk |
| CN105623686A (en) * | 2016-01-13 | 2016-06-01 | 山东联星能源集团有限公司 | Preparation method of machine-made wood charcoal |
-
2016
- 2016-12-07 CN CN201611116000.3A patent/CN106675598A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101028926A (en) * | 2006-03-03 | 2007-09-05 | 郭梦雄 | Process for producing super-fine high-purity white carbon from rice hull and burning heat |
| CN101077979A (en) * | 2007-03-15 | 2007-11-28 | 王永森 | Method for preparing machine-made charcoal |
| CN101921604A (en) * | 2010-08-30 | 2010-12-22 | 浙江建中竹业科技有限公司 | Dry distillation charring method for bamboos |
| CN105600790A (en) * | 2014-09-16 | 2016-05-25 | 王开辉 | Method for co-producing ultra-pure nano-silica and biological oil by using rice husk |
| CN105623686A (en) * | 2016-01-13 | 2016-06-01 | 山东联星能源集团有限公司 | Preparation method of machine-made wood charcoal |
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Application publication date: 20170517 |