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Method for preparing charcoal by applying rice straw

A technology using rice and biochar, which is applied in the direction of biofuel, carbon preparation/purification, pyroligneous acid production, etc., can solve the problems of expensive production raw materials and complicated process flow, and achieve low price, simple process flow, and reduced The effect of production costs

Inactive Publication Date: 2019-05-21
天津市实验林场
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing biochar by using rice straw, which has the advantages of simple process flow and low production raw materials, and solves the problems of complicated process flow and expensive production raw materials in the existing biochar preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Cut the selected straw with cutting equipment to make the straw into segments or blocks of about 2 cm, and then dry the cut straw with drying equipment until the water content of the straw is equal to or less than 35%. Remove the straw out of the drying equipment, then put the dried straw on the conveying device, then turn on the ignition device of the carbonization furnace, when the temperature of the carbonization bin reaches 600 degrees, turn on the material conveying device to remove the pretreated straw Send it into the bin, and adjust the straw conveying speed and air extraction according to the amount of smoke generated during straw burning, so that the temperature in the carbonization bin is controlled at 600 degrees, and the straw burning time is 30 minutes. Wood vinegar is produced during the straw burning process liquid, and recycle it. When the raw biochar flows out of the discharge port, the cooling device is turned on immediately to cool down the raw carbon...

Embodiment 2

[0031] In embodiment one, add following operation:

[0032] Change the incineration temperature of the carbonization furnace in the step (4) to 500 degrees.

[0033] Cut the selected straw with cutting equipment to make the straw into segments or blocks of about 2 cm, and then dry the cut straw with drying equipment until the water content of the straw is equal to or less than 35%. Remove the straw out of the drying equipment, then put the dried straw on the conveying device, then turn on the ignition device of the carbonization furnace, when the temperature of the carbonization bin reaches 500 degrees, turn on the material conveying device to remove the pretreated straw Send it into the bin, and adjust the straw conveying speed and air extraction according to the amount of smoke generated during straw burning, so that the temperature in the carbonization bin is controlled at 500 degrees, and the straw burning time is 30 minutes. Wood vinegar is produced during the straw burni...

Embodiment 3

[0035] In embodiment one, add following operation:

[0036] Change the incineration temperature of the carbonization furnace in the step (4) to 700 degrees.

[0037] Cut the selected straw with cutting equipment to make the straw into segments or blocks of about 2 cm, and then dry the cut straw with drying equipment until the water content of the straw is equal to or less than 35%. Remove the straw out of the drying equipment, then put the dried straw on the conveying device, then turn on the ignition device of the carbonization furnace, when the temperature of the carbonization bin reaches 700 degrees, turn on the material conveying device to remove the pretreated straw Send it into the bin, and adjust the straw conveying speed and air extraction according to the amount of smoke generated during straw burning, so that the temperature in the carbonization bin is controlled at 700 degrees, and the straw burning time is 30 minutes. Wood vinegar is produced during the straw burni...

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PUM

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Abstract

The invention discloses a method for preparing charcoal by applying rice straw. The method comprises the following steps of selecting straw, wherein harvested straw is selected, and stacked airing isperformed. The straw with the low cost is adopted as raw materials of charcoal, the straw is smashed and dried in advance, then, the straw is incinerated through a dry distillation type carbonizing furnace, a conveying device and a cooling device are matched with the carbonizing furnace so that the straw can be incinerated and cooled, assembly line operation can be formed, then, pyrolygneous and pure water generated by incineration straw are diluted proportionally, a modified solution is formed, the charcoal modification cost is greatly lowered, finally, charcoal is screened, the charcoal reaches the specified grain size, the method is simple in technological process, the price of the production raw materials and a modified solution is low, the production cost of charcoal is greatly lowered, the method is worthy of being used and popularized, and meanwhile the problems that an existing charcoal preparation method is complex in technological process and the production raw materials areexpensive are solved.

Description

technical field [0001] The invention relates to the technical field of biochar, in particular to a method for preparing biochar by using rice straw. Background technique [0002] Biochar is a solid product produced by high-temperature pyrolysis of bio-organic materials in an anoxic or anaerobic environment. It can be used not only as a high-quality energy source, a soil improver, but also as a reducing agent, a slow-release carrier for fertilizers, and a carbon dioxide sequestration agent. etc., have been widely used in carbon sequestration and emission reduction, water purification, heavy metal adsorption and soil improvement, and can provide solutions to hot issues of global concern such as climate change, environmental pollution and soil function degradation to a certain extent. [0003] Biochar is not ordinary charcoal, but a kind of charcoal with extremely rich carbon content. It carbonizes wood, grass, jade biochar, rice stalks or other crop wastes through pyrolysis in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/05C10B53/02C10C5/00
CPCY02E50/10
Inventor 刘文政赖立松顾红艳郑育锁韩建华王春海于澎湃李志强孙宇哲叶少锋王一帆金聪颖侯海鹏张滈
Owner 天津市实验林场
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