CN104620777A - Method for determining optimum picking time of perennial energy plants special for marsh gas - Google Patents
Method for determining optimum picking time of perennial energy plants special for marsh gas Download PDFInfo
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- CN104620777A CN104620777A CN201510062069.1A CN201510062069A CN104620777A CN 104620777 A CN104620777 A CN 104620777A CN 201510062069 A CN201510062069 A CN 201510062069A CN 104620777 A CN104620777 A CN 104620777A
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Abstract
The invention discloses a method for determining the optimum picking time of perennial energy plants special for marsh gas, and belongs to the field of biomass energy. By means of the method for harvesting perennial energy plants in a segmented mode, through the combination of the measurement of the dry matter yield and the analysis of the independent marsh gas fermentation effect, the optimum picking time of the perennial energy plants special for marsh gas is determined. The method is easy and convenient to operate and credible in result and has quite high actual production and popularization value.
Description
Technical field
The invention belongs to biomass energy source domain, relate to gathering of biogas energy plant, be specifically related to a kind of method determining perennial biogas dedicated energy plant optimal harvest time.
Background technology
Increasingly exhausted along with fossil fuels such as oil, coal, natural gases, the development and utilization of renewable energy resources especially biomass energy obtains the attention of countries in the world day by day.Biogas is a kind of important renewable energy resources, has flexible and changeable application value realistic and good conditions for sports industry, obtains the concern of people gradually.
Utilize energy-source plant producing methane through anaerobic fermentation to have large quantity research, as a kind of with hybrid giant napier be raw material produce biogas method (200910029204.7), a kind of be that fermenting raw materials is prepared the method (200610116145.3) of biogas, planting huge fungous grass and produced the method (200910112261.1) etc. of biogas as biomass energy with spartina alterniflora loisel.But these methods only relate to the technique of energy-source plant fermentation methane production, do not provide the method determining energy-source plant optimal harvest time.
Perennial biogas dedicated energy plant means that a class is specifically designed to the energy-source plant of biogas fermentation, and this kind of plant can gather in more than 10 years continuously, and economic benefit is high.But due to best picking time accurately can not be selected, current people gather in biogas dedicated energy plant and judge simply by virtue of ordinary experience, so just, the maximum production capacity in land area of one unit can not be given full play to, the maximum economic benefit of perennial biogas dedicated energy plant can not be obtained.Therefore for energy crop biogas engineering, determine that the optimal harvest time of perennial biogas dedicated energy plant has important function.
Summary of the invention
The object of the present invention is to provide a kind of method determining perennial biogas dedicated energy plant optimal harvest time, adopt the method that perennial energy-source plant subregion gathers in, and measure and independent biogas fermentation effect analysis in conjunction with dry matter production, determine perennial biogas dedicated energy plant optimal harvest time.The present invention is easy and simple to handle, credible result, has good actual production promotional value.
For achieving the above object, the present invention adopts following technical scheme:
A kind ofly determine that the method for perennial biogas dedicated energy plant optimal harvest time comprises the following steps:
(1) after 1 ~ 3 year, choose 5 ~ 20 of the same area subregions at energy-source plant growing area at perennial biogas dedicated energy planting, under average daily temperature reaches the growth of this energy-source plant in limited time, the energy-source plant of whole growing area is gathered in; Gathered in the energy-source plant of a subregion every set time section from the same day;
(2) first measure whole subregion produce total fresh weight of plant, then take out after a part measures fresh weight and pulverize, then dry and measure its dry weight, calculate the total solids content of plant, then calculate the gross dry weight of whole subregion output energy-source plant; According to the gross dry weight of whole subregion output energy-source plant and vegetation period unit of account growth time in the dry matter production of unit are;
(3) energy-source plant of harvesting being crushed to length is less than 15 centimetres, carries out ensiling process, and the raw material ensiling time of different batches harvesting is identical, is dried to moisture less than 15%, is stored in less than 20 DEG C after ensiling terminates; Or without ensiling, convection drying, to moisture less than 15%, is stored in less than 20 DEG C;
(4) different time to be gathered in and the raw material preserved carries out biogas fermentation, using natural pond liquid or natural pond slag as inoculum, total solid concentration 0.5 ~ 25%, fermentation temperature 30 ~ 60 DEG C, fermentation time 10 ~ 60 days, zymotic fluid pH=6.5 ~ 8.0, record daily output methane quantity and the methane concentration of every day, the methane production that after fermentation ends, unit of account dry matter accumulates in whole yeast phase;
(5) the methane production unit of account growth time unit are accumulated in whole yeast phase according to the dry matter production of unit are in the unit growth time of step (2) and the per dry matter of step (4) produce plant fermentation after the methane production that accumulates;
(6) with the unit growth chronomere area of step (5) produce plant fermentation after growth time corresponding to the methane production peak that accumulates for optimal harvest time.
Described energy-source plant be Pennisetum plant, Sorghum propinquum, sugar grass, giantreed, reed, class reed, sugarcane, spot thatch, Bi Te, Sudan grass, Caulis Miscanthis floriduli, reed, awns, awns beanstalk, Dicranopteris amplachinget Chiu, Arundinella hirta (Thunb.) Tanaka, one or more in switchgrass.
Remarkable advantage of the present invention is: the method that the present invention adopts perennial energy-source plant subregion to gather in, and measures and independent biogas fermentation effect analysis in conjunction with dry matter production, determines perennial biogas dedicated energy plant optimal harvest time.The present invention is easy and simple to handle, credible result, has good actual production promotional value.
Embodiment
Further illustrate specific embodiment of the invention method for the huge bacterium grass of perennial energy-source plant below, the present invention includes but be not limited to following instance.
A kind ofly determine that the method for perennial biogas dedicated energy plant optimal harvest time comprises the following steps:
(1) after 1 year, the present invention is utilized to determine its optimal harvest time at planting huge fungous grass.
(2) subregion of 12 10 square metres is chosen in planting huge fungous grass district, when March by the huge bacterium grass harvesting of whole growing area.Every the energy-source plant of harvesting in a 30 days subregion from the same day.
(3) the huge bacterium that step (2) is gathered in is made a preliminary survey its whole subregion fixed produce total fresh weight of plant, then take out after a part measures fresh weight and pulverize, dry again and measure its dry weight, calculate the total solids content of plant, then calculate the gross dry weight of whole subregion output energy-source plant.According to the gross dry weight of the huge bacterium grass of whole subregion output and vegetation period unit of account growth time unit are dry matter production.
(4) huge bacterium grass meal step (2) gathered in is broken, and the length after pulverizing is less than 15 centimetres.By the temperature preservation below 20 DEG C after moisture less than 15% of the raw material convection drying after pulverizing.
(5) step (4) different time to be gathered in and the raw material preserved carries out biogas fermentation.Using natural pond liquid or natural pond slag as inoculum, total solid concentration 5%, fermentation temperature 37 DEG C, fermentation time 40 days, zymotic fluid pH maintains 6.5 ~ 8.0.Record daily output methane quantity and the methane concentration of every day.The methane production that after fermentation ends, unit of account dry matter accumulates in whole yeast phase.
(6) according to the dry matter production of step (3) unit growth chronomere area and the methane production unit of account growth time unit are of step (5) per dry matter produce plant fermentation after the methane production that accumulates.
(7) with step (6) unit growth chronomere area produce plant fermentation after growth time corresponding to the methane production peak that accumulates be best collecting time.
The foregoing is only preferred embodiment of the present invention, all equalizations done according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (2)
1. determine a method for perennial biogas dedicated energy plant optimal harvest time, it is characterized in that: comprise the following steps:
(1) after 1 ~ 3 year, choose 5 ~ 20 of the same area subregions at energy-source plant growing area at perennial biogas dedicated energy planting, under average daily temperature reaches the growth of this energy-source plant in limited time, the energy-source plant of whole growing area is gathered in; Gathered in the energy-source plant of a subregion every set time section from the same day;
(2) first measure whole subregion produce total fresh weight of plant, then take out after a part measures fresh weight and pulverize, then dry and measure its dry weight, calculate the total solids content of plant, then calculate the gross dry weight of whole subregion output energy-source plant; According to the gross dry weight of whole subregion output energy-source plant and vegetation period unit of account growth time in the dry matter production of unit are;
(3) energy-source plant of harvesting being crushed to length is less than 15 centimetres, carry out ensiling process, the raw material ensiling time of different batches harvesting is identical, moisture less than 15% is dried to after ensiling terminates, be stored in less than 20 DEG C, or the energy-source plant after pulverizing is without ensiling, convection drying, to moisture less than 15%, is stored in less than 20 DEG C;
(4) different time to be gathered in and the raw material preserved carries out biogas fermentation, using natural pond liquid or natural pond slag as inoculum, total solid concentration 0.5 ~ 25%, fermentation temperature 30 ~ 60 DEG C, fermentation time 10 ~ 60 days, zymotic fluid pH=6.5 ~ 8.0, record daily output methane quantity and the methane concentration of every day, the methane production that after fermentation ends, unit of account dry matter accumulates in whole yeast phase;
(5) the methane production unit of account growth time unit are accumulated in whole yeast phase according to the dry matter production of unit are in the unit growth time of step (2) and the per dry matter of step (4) produce plant fermentation after the methane production that accumulates;
(6) with the unit growth chronomere area of step (5) produce plant fermentation after growth time corresponding to the methane production peak that accumulates for optimal harvest time.
2. the method determining perennial biogas dedicated energy plant optimal harvest time according to claim 1, is characterized in that: described energy-source plant is one or more in Pennisetum plant, Sorghum propinquum, sugar grass, giantreed, reed, class reed, sugarcane, spot thatch, Sudan grass, Caulis Miscanthis floriduli, reed, awns, awns beanstalk, Dicranopteris amplachinget Chiu, Arundinella hirta (Thunb.) Tanaka, switchgrass.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104605153A (en) * | 2015-02-06 | 2015-05-13 | 福建农林大学 | Method for comprehensive utilization of energy grass in fields of feeds, biogas and paper pulp |
| CN105993604A (en) * | 2016-06-15 | 2016-10-12 | 福建农林大学 | Method for culturing straw rotting edible fungi by utilizing energy straw biogas residues |
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| CA2317314C (en) * | 1998-01-07 | 2003-12-30 | Metabolix, Inc. | Animal nutrition compositions |
| NZ529758A (en) * | 2001-05-31 | 2006-09-29 | Syngenta Participations Ag | A method comprising selecting corn hybrids of specific endosperm type and NDF content for use as a silage and/or a grain supplement |
| CN1923732A (en) * | 2006-09-18 | 2007-03-07 | 同济大学 | Method of preparing marsh gas from spartina alterniflora |
| CN101519669A (en) * | 2009-04-03 | 2009-09-02 | 南京大学 | Method for producing marsh gas by using pennisetum hydridum as raw material |
| CN101617599A (en) * | 2009-07-28 | 2010-01-06 | 童金阜 | Method for planting puelia and producing biogas by puelia as biomass energy |
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2015
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2317314C (en) * | 1998-01-07 | 2003-12-30 | Metabolix, Inc. | Animal nutrition compositions |
| NZ529758A (en) * | 2001-05-31 | 2006-09-29 | Syngenta Participations Ag | A method comprising selecting corn hybrids of specific endosperm type and NDF content for use as a silage and/or a grain supplement |
| CN1923732A (en) * | 2006-09-18 | 2007-03-07 | 同济大学 | Method of preparing marsh gas from spartina alterniflora |
| CN101519669A (en) * | 2009-04-03 | 2009-09-02 | 南京大学 | Method for producing marsh gas by using pennisetum hydridum as raw material |
| CN101617599A (en) * | 2009-07-28 | 2010-01-06 | 童金阜 | Method for planting puelia and producing biogas by puelia as biomass energy |
Non-Patent Citations (1)
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| 冯春罡等: "《绿色能源植物橡胶草的最佳收获期研究》", 《安徽农业科学》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104605153A (en) * | 2015-02-06 | 2015-05-13 | 福建农林大学 | Method for comprehensive utilization of energy grass in fields of feeds, biogas and paper pulp |
| CN105993604A (en) * | 2016-06-15 | 2016-10-12 | 福建农林大学 | Method for culturing straw rotting edible fungi by utilizing energy straw biogas residues |
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| CN104620777B (en) | 2016-08-10 |
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