CN101774572A - Method for improving yield of ecological carbon - Google Patents
Method for improving yield of ecological carbon Download PDFInfo
- Publication number
- CN101774572A CN101774572A CN201010110120A CN201010110120A CN101774572A CN 101774572 A CN101774572 A CN 101774572A CN 201010110120 A CN201010110120 A CN 201010110120A CN 201010110120 A CN201010110120 A CN 201010110120A CN 101774572 A CN101774572 A CN 101774572A
- Authority
- CN
- China
- Prior art keywords
- biomass
- sample
- sulfuric acid
- ecological
- charing
- 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
Landscapes
- Carbon And Carbon Compounds (AREA)
Abstract
The invention provides a method for improving the yield of ecological carbon, belonging to the category of novel material synthesis and processing engineering technology and the cross technical field of nanometer material, carbon material, cellulose science and renewable energy source. The method is characterized in that before the carbonization process, the biomass substance is processed through sulfuric acid, that is, the biomass substance is immersed in sulfuric acid at certain concentration so as to improve the yield of the ecological carbon. The invention has the effects and benefits that the materials are cheap in price, the production process is simple and is suitable for all biomass substances, and the ecological carbon prepared through the method is high in yield, low in ash content and wide in application range.
Description
Technical field
The present invention relates to a kind of method that improves yield of ecological carbon, belong to nano material, carbon material, Mierocrystalline cellulose science, renewable energy source crossed technical.Relating generally to biomass is raw material, adopts the method for sulfuric acid immersion, prepares the technological method of the ecological charcoal of high yield.
Background technology
Biomass are clean renewable resourcess, and annual biomass total amount of producing is about 1400～1,800 hundred million tons on the earth, are equivalent to 10 times of present whole world year total energy consumption.China is as a large agricultural country, and biomass and waste material thereof are very abundant.For a long time, biomass waste mainly is used as family's fuel, animal-feed or is buried as fertilizer sources in the ground, even is directly incinerated, and utilization rate of heat value is low and polluted environment.Recently relevant for utilizing preparation solid fuel such as stalk and be used for the report of combustion power generation, but, restricted it and further developed owing to its combustion heat value is lower.Therefore efficient and high value added utilization how to realize biomass and waste thereof is key subjects that are worth research.
Compare with mineral fuel, biomass volatile content height, carbon content higher (usually more than 45%), sulphur, nitrogen content are low, and ash content is few, and environmental pollution is few during burning, is one of high quality raw material of the ecological charcoal of preparation.Both at home and abroad some scientists be that raw material has been prepared ecological charcoals such as gac, carbon molecular sieve, but the gained yield of ecological carbon is low, seriously restricts its heavy industrialization application.In certain temperature range, the biomass material after pulverizing is carried out the machinery pressurization, can improve the yield of ecological charcoal, therefore but this method is inapplicable to being difficult to pulverize scleroid biomass, researchs and develops a kind of yield that all biomass all are suitable for and develops skill and be necessary very much.
Summary of the invention
Purpose of the present invention just provides a kind of method of effective raising yield of ecological carbon, and this method is all effective to all biomass.Preparation process is to be carbon source with biomass, adopts the sulfuric acid immersion treatment before the charing, has the cheap ecological charcoal prospect of good scale operation.Its major technology characteristics are carried out in preparation process as follows:
(1) scleroid biomass (abbreviating hard biomass as) such as the coconut husk that will be difficult to pulverize, bamboo are made strip and block, obtain all raw materials below 5mm of three dimension scale; The biomass (abbreviating soft biomass as) that quality such as the bagasse that is easy to pulverize, wood chip is soft are pulverized, screening, obtain less than 10 purpose raw materials.
(2) above-mentioned raw materials is immersed in the certain density sulphuric acid soln.The concentration of sulphuric acid soln is 5～50%, and soak time is 0.5～10h.
(3) drying of immersion sample.Place 120 ℃ loft drier with soaking sample, behind the oven dry 6h raw material is taken out, be put in the plastics bag after cooling and place in the encloses container and preserve, in order to using.
(4) charing of immersion sample.Carbonization temperature is 600～900 ℃, and carbonization time is 10～120min.
(5) charing sample activation.Activation temperature is 700～900 ℃, and soak time is 10～120min, and the consumption of activator water vapour is 0.1～0.5mL/min, promptly obtains ecological charcoal.
Embodiment
Below in conjunction with specific embodiment in detail technical characterstic of the present invention is described in detail:
Embodiment 1:
Being raw material (carbon 45.52wt% less than 10 purpose corn stalk (genus soft biomass), hydrogen 6.23wt%, nitrogen 0.88wt%, oxygen 47.37wt%), be 6g at raw material, sulfuric acid concentration is 10%, the sulfuric acid consumption is under the situation of 90mL, dipping 10h will soak the loft drier that sample places 120 ℃ then, take out behind the oven dry 6h.800 ℃ of carbonization temperatures, carry out charing under the carbonization time 30min, 18.15% before carbonization yield is soaked by sulfuric acid rises to 30.19% after the immersion.800 ℃ of activation temperatures, activator water vapour flow is 0.25mL/min, N
2Activate under the flow 50mL/min, if the activation yield is in 50%, then the total recovery of ecological charcoal reaches 15.10%, when soaking without sulfuric acid 9.08%.
Embodiment 2:
Being raw material (carbon 49.23wt% less than 20 purpose wheat straws (genus soft biomass), hydrogen 6.87wt%, nitrogen 1.24wt%, oxygen 42.66wt%), be 6g at raw material, sulfuric acid concentration is 20%, the sulfuric acid consumption is under the situation of 90mL, dipping time is 5h, will soak the loft drier that sample places 120 ℃ then, takes out behind the oven dry 6h.800 ℃ of carbonization temperatures, carry out charing under the carbonization time 30min, 30.54% before carbonization yield is soaked by sulfuric acid rises to 34.88% after the immersion.800 ℃ of activation temperatures, activator water vapour flow is 0.25mL/min, N
2Activate under the flow 50mL/min, if the activation yield is in 50%, then the total recovery of ecological charcoal reaches 17.44%, is higher than 15.27% when soaking without sulfuric acid.
Embodiment 3:
Being raw material (carbon 46.90wt% less than 20 purpose corn cobs (genus soft biomass), hydrogen 6.41wt%, nitrogen 0.91wt%, oxygen 45.78wt%), be 6g at raw material, sulfuric acid concentration is 20%, the sulfuric acid consumption is under the situation of 90mL, dipping 5h will soak the loft drier that sample places 120 ℃ then, take out behind the oven dry 6h.800 ℃ of carbonization temperatures, carry out charing under the carbonization time 30min, 18.52% before carbonization yield is soaked by sulfuric acid rises to 32.64% after the immersion.800 ℃ of activation temperatures, activator water vapour flow is 0.25mL/min, N
2Activate under the flow 50mL/min, if the activation yield is in 50%, then the total recovery of ecological charcoal reaches 16.32%, when soaking without sulfuric acid 9.26%.
Embodiment 4:
With cut growth strip and three dimension scale all the bamboo below 5mm (genus hard biomass) be raw material (carbon 48.40wt%, hydrogen 6.32wt%, nitrogen 0.41wt%, oxygen 44.87wt%), be 6g at raw material, sulfuric acid concentration is 20%, the sulfuric acid consumption is under the situation of 90mL, dipping time is 5h, will soak the loft drier that sample places 120 ℃ then, takes out behind the oven dry 6h.800 ℃ of carbonization temperatures, carry out charing under the carbonization time 30min, 19.49% before carbonization yield is soaked by sulfuric acid rises to 29.76% after the immersion.800 ℃ of activation temperatures, activator water vapour flow is 0.25mL/min, N
2Activate under the flow 50mL/min, if the activation yield is in 50%, then the total recovery of ecological charcoal reaches 14.88%, when soaking without sulfuric acid 9.75%.
Embodiment 5:
With cut into bulk and three dimension scale all the Exocarpium cocois (Cocos nucifera L) below 5mm (genus hard biomass) be raw material (carbon 48.15wt%, hydrogen 6.62wt%, nitrogen 0.66wt%, oxygen 44.57wt%), be 6g at raw material, sulfuric acid concentration is 20%, the sulfuric acid consumption is under the situation of 90mL, dipping time is 5h, will soak the loft drier that sample places 120 ℃ then, takes out behind the oven dry 6h.800 ℃ of carbonization temperatures, carry out charing under the carbonization time 30min, 20.03% before carbonization yield is soaked by sulfuric acid rises to 26.75% after the immersion.800 ℃ of activation temperatures, activator water vapour flow is 0.25mL/min, N
2Activate under the flow 50mL/min, if the activation yield is in 50%, then the total recovery of ecological charcoal reaches 13.38%, is higher than 10.02% when soaking without sulfuric acid.
Embodiment 6:
With cut into bulk and three dimension scale all the cotton bar below 5mm (genus hard biomass) be raw material (carbon 47.78wt%, hydrogen 6.34wt%, nitrogen 0.86wt%, oxygen 45.02wt%), be 6g at raw material, sulfuric acid concentration is 20%, the sulfuric acid consumption is under the situation of 90mL, dipping time is 5h, will soak the loft drier that sample places 120 ℃ then, takes out behind the oven dry 6h.800 ℃ of carbonization temperatures, carry out charing under the carbonization time 30min, 21.61% before carbonization yield is soaked by sulfuric acid rises to 32.20% after the immersion.800 ℃ of activation temperatures, activator water vapour flow is 0.25mL/min, N
2Activate under the flow 50mL/min, if the activation yield is in 50%, then the total recovery of ecological charcoal reaches 16.10%, when soaking without sulfuric acid 10.81%.
Claims (4)
1. method that improves yield of ecological carbon, this method is a carbon source with biomass, it is characterized in that biomass are adopted the sulfuric acid immersion treatment before charing, its preparation process and processing condition thereof are as follows:
(1), raw-material choosing:
The scleroid biomass (abbreviating hard biomass as) that will be difficult to pulverize are made bulk or strip, obtain three dimension scale all less than the raw material of 5mm;
Perhaps the biomass that the quality that will be easy to pulverize is soft (abbreviating soft biomass as) are pulverized, are sieved, and obtain less than 10 purpose raw materials;
(2), above-mentioned raw materials is immersed in the certain density sulphuric acid soln, the concentration of sulphuric acid soln is 5～50%, and soak time is 0.5～10h;
(3), soak the drying of sample:
Soak sample and place 120 ℃ loft drier, behind the oven dry 6h raw material is taken out, be put in the plastics bag after cooling and place in the encloses container and preserve, in order to using;
(4), soak the charing of sample:
Dried sample is carried out charing, and carbonization temperature is 600～900 ℃, and carbonization time is 10～120min;
(5), charing sample activation:
Sample after the charing is activated, and activation temperature is 700～900 ℃, and soak time is 10～120min, and the consumption of activator water vapour is 0.1～0.5mL/min, promptly obtains ecological charcoal.
2. a kind of method that improves yield of ecological carbon according to claim 1 is characterized in that raw material is 6g, and the sulfuric acid consumption is 90mL.
3. a kind of method that improves yield of ecological carbon according to claim 1 is characterized in that described hard biomass is coconut husk or bamboo.
4. a kind of method that improves yield of ecological carbon according to claim 1 is characterized in that described soft biomass is bagasse, wood chip or corn stalk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010110120A CN101774572A (en) | 2010-02-20 | 2010-02-20 | Method for improving yield of ecological carbon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010110120A CN101774572A (en) | 2010-02-20 | 2010-02-20 | Method for improving yield of ecological carbon |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101774572A true CN101774572A (en) | 2010-07-14 |
Family
ID=42511198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010110120A Pending CN101774572A (en) | 2010-02-20 | 2010-02-20 | Method for improving yield of ecological carbon |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101774572A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2394954A1 (en) * | 2010-06-08 | 2011-12-14 | Honda Motor Co., Ltd. | Carbon manufacturing method |
| CN103011129A (en) * | 2012-12-13 | 2013-04-03 | 黑龙江大学 | Method for preparing high-specific-surface-area porous graphitic nanocarbon plate with coconut shells serving as raw materials |
| CN106219510A (en) * | 2016-07-07 | 2016-12-14 | 陕西科技大学 | The method that a kind of highly basic activation pomelo peel prepares three-dimensional carbon nano material |
| CN110028066A (en) * | 2019-05-09 | 2019-07-19 | 中国科学院山西煤炭化学研究所 | The preparation method of porous carbon micron tube and porous carbon micron tube |
| CN113481023A (en) * | 2021-07-14 | 2021-10-08 | 大连理工大学 | Method for preparing low-ash biomass semi-coke |
-
2010
- 2010-02-20 CN CN201010110120A patent/CN101774572A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2394954A1 (en) * | 2010-06-08 | 2011-12-14 | Honda Motor Co., Ltd. | Carbon manufacturing method |
| US8192712B2 (en) | 2010-06-08 | 2012-06-05 | Honda Motor Co., Ltd. | Carbon manufacturing method |
| CN103011129A (en) * | 2012-12-13 | 2013-04-03 | 黑龙江大学 | Method for preparing high-specific-surface-area porous graphitic nanocarbon plate with coconut shells serving as raw materials |
| CN103011129B (en) * | 2012-12-13 | 2014-12-10 | 黑龙江大学 | Method for preparing high-specific-surface-area porous graphitic nanocarbon plate with coconut shells serving as raw materials |
| CN106219510A (en) * | 2016-07-07 | 2016-12-14 | 陕西科技大学 | The method that a kind of highly basic activation pomelo peel prepares three-dimensional carbon nano material |
| CN110028066A (en) * | 2019-05-09 | 2019-07-19 | 中国科学院山西煤炭化学研究所 | The preparation method of porous carbon micron tube and porous carbon micron tube |
| CN113481023A (en) * | 2021-07-14 | 2021-10-08 | 大连理工大学 | Method for preparing low-ash biomass semi-coke |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Sri Shalini et al. | Biochar from biomass waste as a renewable carbon material for climate change mitigation in reducing greenhouse gas emissions—a review | |
| CN109534636B (en) | Production system for comprehensively treating and utilizing waste straw and livestock and poultry manure | |
| Kong et al. | Biochar from oil palm biomass: A review of its potential and challenges | |
| CN103865552B (en) | A kind of method and charcoal preparing charcoal based on agriculture and forestry organic waste material | |
| CN103627418A (en) | Method for preparing charcoal by using straw | |
| CN104087323B (en) | A kind of utilize waste material of edible mushroom to prepare charcoal method and application | |
| WO2016015640A1 (en) | Sandy and degraded soil modifier and preparation method and device therefor | |
| CN106904589A (en) | A kind of hydro-thermal method prepares method and the application of bagasse Carbon Materials | |
| CN104003822A (en) | Method for preparing biological organic fertilizer by utilizing garden plant waste | |
| CN103588519A (en) | MS preparation organic bio-fertilizer and preparation method thereof | |
| CN104030862A (en) | Method for preparing cow dung charcoal for inhibiting nitrogenous fertilizer leaching loss | |
| CN103771410A (en) | Preparation method for crop straw active carbon | |
| CN101774572A (en) | Method for improving yield of ecological carbon | |
| CN104789239A (en) | Preparation method of charcoal and charcoal | |
| CN105601430A (en) | Method for manufacturing carbon and carbon fertilizers by aid of straw | |
| Lin et al. | Repurposing Washingtonia filifera petiole and Sterculia foetida follicle waste biomass for renewable energy through torrefaction | |
| CN106512945A (en) | Preparation method of biochar capable of efficiently removing cadmium in solution | |
| CN101850958A (en) | Method for improving yield of biomass porous carbon | |
| CN104974812A (en) | Method for producing clean coal (carbon) spheres by using municipal sludge and agricultural wastes | |
| CN112745154A (en) | Method for reducing methane gas emission in cow dung composting process | |
| CN106007943A (en) | Efficient Chinese herb residue extracting solution fertilizer additive and preparation method thereof | |
| CN103497774A (en) | Method for producing environment-friendly mechanism charcoal and coproducing wood tar oil and biogas by using anredera cordifolia | |
| CN105989564B (en) | Atmospheric carbon resource and CO2Method for comprehensively developing and utilizing equivalent substances | |
| Kataki et al. | Weeds as a renewable bioresource: prospects for bioconversion to biofuels and biomaterials through a cascade of approaches | |
| CN103898029A (en) | Waste garden branch and leaf fermenting bacterial preparation as well as preparation method and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20100714 |