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A method for preparing wood vinegar with crop stalks

A technology for wood vinegar and crops, applied in the field of wood vinegar, can solve the problems of air pollution, unsuccessful, low output, etc., and achieve the effects of avoiding pollution, increasing added value, and reducing waste.

Inactive Publication Date: 2015-12-30
韩蕾
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, wood vinegar is mainly formed after carbonization of wood, and the collected gas phase is condensed into liquid. Due to the limitation of wood raw materials, the production of wood vinegar is limited, and it is difficult to meet the demand of the market.
For this reason, those skilled in the art use apricot shells and seabuckthorn branches as raw materials to prepare wood acetic acid, but these raw materials still belong to the varieties with little yield, and contain cellulose, hemicellulose and lignin in a large amount of crop straws, these crop straws Most of the rods are discarded in the form of incineration, causing pollution to the atmosphere
Those skilled in the art once attempted to make wood vinegar raw material with crop stalks, but, because the crop stalks are loose and bulky, the tests for producing raw materials for wood vinegar were all unsuccessful

Method used

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  • A method for preparing wood vinegar with crop stalks
  • A method for preparing wood vinegar with crop stalks
  • A method for preparing wood vinegar with crop stalks

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Embodiment 1, a kind of method for preparing wood vinegar with crop stalks, concrete steps are as follows:

[0037] ① Take dried red bean stalks, ginger stalks and cotton stalks and pulverize them to 1.5 cm for later use;

[0038] 2. Get pulverized red bean stalks, ginger stalks and cotton stalks and mix in a ratio of 1:1.5:2 by weight to obtain mixed stalks;

[0039] 3. the surface of the mixed stalk is sprayed into clean water, so that the water content of the mixed stalk is 15%;

[0040] 4. the hydrated stalk in the step 3. is inserted in the stalk granulator, and the stalk cylinder particles are made by rolling and extruding;

[0041] ⑤ Place the column particles at 10°C for 12 hours; put the column particles in step ④ into a biomass retort for pyrolysis, the pyrolysis time is 2 hours, the pyrolysis temperature is 560°C-660°C, and the charcoal is collected and gas phase product, the gas phase product becomes crude wood vinegar after condensation;

[0042] ⑥ Take ...

Embodiment 2

[0045] Embodiment 2, a kind of method for preparing wood vinegar with crop stalks, concrete steps are as follows:

[0046] ① Take dried red bean stalks, ginger stalks and cotton stalks and pulverize them to 2 cm for later use;

[0047] 2. get pulverized red bean stalks, ginger stalks and cotton stalks and mix in a ratio of 1:1.5:1.5 by weight to obtain mixed stalks;

[0048] 3. the surface of the mixed stalk is sprayed into clean water, so that the water content of the mixed stalk is 25%;

[0049] 4. the hydrated stalk in the step 3. is inserted in the stalk granulator, and the stalk cylinder particles are made by rolling and extruding;

[0050] ⑤ Place the column particles at 35°C for 36 hours; put the column particles in step ④ into a biomass retort for pyrolysis, the pyrolysis time is 5 hours, the pyrolysis temperature is 560°C-660°C, and the charcoal is collected and gas phase product, the gas phase product becomes crude wood vinegar after condensation;

[0051] ⑥ Take ...

Embodiment 3

[0054] Embodiment 3, a kind of method for preparing wood vinegar with crop stalks, concrete steps are as follows:

[0055] ① Take dried red bean stalks, ginger stalks and cotton stalks and pulverize them to 1.8 cm for later use;

[0056] 2. Get pulverized red bean stalks, ginger stalks and cotton stalks and mix in a ratio of 1:1.8:1.5 by weight to obtain mixed stalks;

[0057] 3. the surface of the mixed stalk is sprayed into clean water, so that the water content of the mixed stalk is 20%;

[0058] 4. the hydrated stalk in the step 3. is inserted in the stalk granulator, and the stalk cylinder particles are made by rolling and extruding;

[0059] ⑤ Place the column particles at 25°C for 26 hours; put the column particles in step ④ into a biomass retort for pyrolysis, the pyrolysis time is 4 hours, the pyrolysis temperature is 560°C-660°C, and the charcoal is collected and gas phase product, the gas phase product becomes crude wood vinegar after condensation;

[0060] ⑥ Tak...

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Abstract

The invention provides a method for preparing wood vinegar from crop straws. The method comprises the following steps of 1, crushing dry red bean straws, ginger straws and cotton straws for later use respectively; 2, mixing the crushed red bean straws, ginger straws and cotton straws to obtain a straw mixture; 3, spraying clean water onto the surface of the straw mixture; 4, placing the water-containing straw mixture obtained in the step 3 in a straw granulator, and rolling and extruding the water-containing straw mixture to obtain columnar straw granules; 5, performing pyrolysis on the columnar granules for 2 to 5 hours at 560 to 660 DEG C, collecting charcoal and a gaseous product, and condensing the gaseous product to obtain crude wood vinegar; 6, distilling the crude wood vinegar under reduced pressure at 100 DEG C, and standing distillate to demix the distillate into three layers; 7, distilling the middle layer of the distillate for 3 to 5 hours under normal pressure at 100 DEG C, and collecting condensate which is refined wood vinegar. According to the method, a wood vinegar water-soluble fertilizer prepared from the crop straws is used for growing agricultural crops.

Description

technical field [0001] The invention relates to wood vinegar, which is a method for preparing wood vinegar with crop straws. Background technique [0002] Because wood vinegar is a kind of pure natural substance, it has more nutrients, and is widely used in fields such as agriculture, medicine, food and cosmetics. In particular, the functions of disinfection, sterilization, and insect repellent in agriculture are widely used in green production in agriculture, such as: solid fertilizer for soil, compound fertilizer for greenhouse vegetable cultivation, plant growth promoter, etc. Along with the attention degree of food safety is put on the first place of people's life gradually, so the demand of wood vinegar increases year by year. Yet wood vinegar mainly adopts after wood charring, collects gaseous matter to condense into liquid and forms, is subjected to the restriction of wood raw material, and the production capacity of wood vinegar is restricted, and is more difficult ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10C5/00
CPCY02E50/10
Inventor 韩蕾
Owner 韩蕾