Integrated utilization method of banana stalk

A technology of banana stalks and materials, applied in organic fertilizers, fiber mechanical separation, waste fuel, etc., can solve the problems of pumps being entangled in fibers, sludge loss, and difficulties in the further use of fibers, so as to avoid hidden dangers of pollution and improve feasibility , to achieve the effect of repeated use

Inactive Publication Date: 2013-08-28
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When entering the anaerobic fermentation tank, it is easy to attach gas and sludge, resulting in sludge loss; at the same time, when the pump is used for transportation, the pump may be entangled by fibers, which will affect the normal operation of biogas fermentation
On the other hand, only a small part of the fiber will be decomposed and converted into biogas during the biogas fermentation process, usually less than 20%, and most of it cannot be utilized
However, after biogas fermentation, the fibers will be mixed with fine sludge, which will cause difficulties in the further utilization of fibers, and the maximum utilization of fibers cannot be realized.

Method used

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  • Integrated utilization method of banana stalk

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A kind of method of comprehensively utilizing banana bar of the present invention adopts the following steps:

[0033] (1) Raw material pretreatment: Take 1 ton of fresh banana stems and crush them with a beater;

[0034] (2) Dispersion: Transport the material obtained in (1) to the regulating tank through a bucket elevator, and add 1 ton of anaerobic effluent obtained in step (4) for dispersion;

[0035] (3) Fiber acquisition: the material obtained in (2) is separated by a grid to obtain 0.6 tons of fiber components and 1.4 tons of liquid;

[0036] (4) Biogas fermentation: transport the materials obtained in (3) to an anaerobic fermentation system for biogas fermentation, and obtain 10 cubic meters of methane and 1.4 tons of anaerobic effluent.

[0037] For the first fermentation, replace the dispersant with fresh water.

Embodiment 2

[0039] A kind of method of comprehensively utilizing banana bar of the present invention adopts the following steps:

[0040] (1) Raw material pretreatment: Take 1 ton of fresh banana stems and grind them through a grinder;

[0041] (2) Dispersion: transport the material obtained in (1) to the adjustment tank through a bucket elevator, and add 5 tons of dispersant obtained in step (4) for dispersion;

[0042] (3) Fiber acquisition: the material obtained in (2) is separated by a grid to obtain 0.2 tons of fiber components and 5.8 tons of liquid;

[0043] (4) Miscellaneous cell acquisition: Obtain 0.8 tons of miscellaneous cells and 5 tons of dispersant from the liquid obtained in (3) through the grid;

[0044] (5) Miscellaneous cell dispersion: Take 1.2 tons of anaerobic effluent obtained in step (6) and mix with the miscellaneous cells obtained in (4), and obtain 2 tons of materials with a dry matter content of 60 kg (dry matter content 6%);

[0045] (6) Biogas fermentation:...

Embodiment 3

[0048] A kind of method of comprehensively utilizing banana bar of the present invention adopts the following steps:

[0049] (1) Raw material pretreatment: Take 1 ton of fresh banana stems and grind them through a grinder;

[0050] (2) Dispersion: Transport the material obtained in (1) to the regulating tank through a bucket elevator, add 1.6 tons of dispersant for dispersion, and the dispersant includes 0.6 tons of dispersant obtained in step (4) and 1 ton of anaerobic effluent ;

[0051] (3) Fiber acquisition: the material obtained in (2) is separated by a grid to obtain 0.4 tons of fiber components and 2.2 tons of liquid;

[0052] (4) Miscellaneous cell acquisition: 0.6 tons of miscellaneous cell components and 1.6 tons of dispersant are obtained from the liquid obtained in (3) through the grid;

[0053] (5) Miscellaneous cell dispersion: Mix 0.4 tons of dispersant with the miscellaneous cells obtained in (4) to obtain 1 ton of material with a dry matter content of 6%; ...

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Abstract

The invention relates to an integrated utilization method of banana stalk, wherein banana stalks are crushed up or slurried to separate fibers and the hybrid cells therein; the hybrid cells are transferred into an anaerobic fermentation system for biogas fermentation so as to obtain biogas and anaerobic effluent; fibers are used as raw material for paper-making or textile. Anaerobic effluent could be reused in preview process, and it could be used as the liquid fertilizer after handling as well. An integrated utilization method of the banana stalk provided by the invention realizes a high-value utilization of the banana stalk through the classified utilization of banana stalk, which avoids the serious banana epidemic situation brought by banana stalk when being stacked naturally or returned to field directly, therefore, significant benefits of environment and economy can be obtained.

Description

technical field [0001] The invention relates to a method for comprehensively utilizing banana stalks, which belongs to the field of biomass energy. Background technique [0002] Banana stems are the main by-products of banana production, and the annual output of banana stems in the country is as high as 27 million tons. Under normal circumstances, except for a small part of the by-products after banana harvesting is used as fertilizer, most of them are discarded on the field and left to rot naturally. The discarding of a large number of banana stems not only causes waste of resources, but also brings about environmental pollution and the breeding of banana diseases and other problems. Among the banana diseases, such diseases as fusarium wilt and yellow leaf disease are the representatives. In banana orchards, the incidence rate is usually 20% to 50%, and it can reach more than 90% in seriously ill areas. The outbreak of banana blight will lead to a reduction in banana pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P5/02C05F11/00D21B1/04D01B1/10
CPCY02E50/30Y02W30/40
Inventor 李十中张成明仉磊李纪红
Owner TSINGHUA UNIV
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