Carbon powder preparation method

A production method and carbon powder technology, which are used in special forms of dry distillation, petroleum industry, biofuels, etc., can solve the problems of non-continuous operation, uneven carbonization, and low carbon powder yield, so as to improve product quality, uniform carbonization, The effect of improving the rate of carbon powder

Active Publication Date: 2014-12-10
吉林省金福一农业科技有限公司
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Problems solved by technology

[0005] The existing charcoal powder is produced by the intermittent smoldering carbonization process, specifically from raw materials to drying, accumulation, smoldering, crushing, and finally packaging; this process is similar to the current method of burning charcoal, that is, the carbonization raw materials are piled up on the bricks for carbonization In the furnace, it burns to a certain extent and is isolated from the air to form anoxic smoldering. The advantage of this method is that it is easy to operate and requires less investment. The disadvantage is that the carbonization is uneven. It has not been carbonized yet, so the rate of charcoal powder output is low, and one furnace is fired and one furnace is cleaned. Continuous operation is not possible, and work efficiency is low.

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Effect test

Embodiment 1

[0036] Embodiment 1, flax stalk carbonization experiment

[0037] From Table 2 of the flax stalk carbonization experiment, it can be concluded that among the 12 experimental treatment combinations, the charcoal output rate of the smoldering experiment is between 26.66-32.55%, with a difference of 5.89 percentage points, and the rotary type is between 33.83-40.80%, with a difference of 6.97 percentage points percentage points, the rotary type is 7.17-8.25 percentage points higher than the smoldering type. Both carbonization methods show that the carbon powder output rate decreases gradually with the increase of carbonization temperature and carbonization time; the carbon content of carbon powder is stuffy The burning type is between 76.12-80.50%, and the rotary type is between 76.12-80.87%. There is little difference between the 12 experimental treatment combinations, and there is little difference between the two carbonization methods. As the carbonization temperature increase...

Embodiment 2

[0042] Embodiment 2, Chinese fir sawdust carbonization experiment

[0043] It can be seen from Table 3 of the fir sawdust carbonization experiment that among the 12 experimental treatment combinations, the charcoal output rate of the smoldering experiment is between 36.86-39.90%, with a difference of 3.04 percentage points, and the rotary type is between 43.15-45.26%, with a difference of 1.76%. percentage points, the carbon powder output rate of the rotary type and the smoldering type is 5.12-6.14 percentage points higher than that of the same period last year. Both carbonization methods show that as the carbonization temperature increases and the carbonization time increases, the carbon powder output rate is "high in the middle and low at both ends." "; the carbon content of carbon powder is between 79.81-81.77% for the smoldering type and 79.49-81.92% for the rotary type. There is little difference between the 12 experimental treatment combinations, and the comparison betwee...

Embodiment 3

[0047] Embodiment 3, kenaf stalk carbonization experiment

[0048] From Table 4 of the kenaf stalk carbonization experiment, it can be seen that among the 12 experimental treatment combinations, the charcoal output rate of the smoldering experiment is between 24.16-29.10%, with a difference of 4.94 percentage points, and the rotary type is between 33.48-38.60%, with a difference of 4.94%. 5.12 percentage points, the carbon powder output rate of the rotary type and the smoldering type is 9.32-9.50 percentage points higher than that of the same period last year. Both carbonization methods show that as the carbonization temperature increases and the carbonization time increases, the carbon powder output rate shows "middle high at both ends" "Low" change; the carbon content of carbon powder is between 81.36-85.50% for the smoldering type, with a difference of 4.14 percentage points. The carbonization time of 20 minutes is the highest, followed by 10 minutes, 30 minutes, and 40 minu...

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Abstract

The invention discloses a carbon powder preparation method which specifically comprises the following steps: drying raw materials, crushing, carbonizing, crushing and packaging, wherein the step of carbonizing adopts a sectional carbonizing mode which comprises three carbonization sections, the temperature of the first section is 200-250 DEG C, the temperature of the second section is 250-300 DEG C, the temperature of the third section is 300-400 DEG C, and the carbonization time is 10-30 minutes. According to the method, the carbonization temperature and the carbonization time of each period are set according to different raw materials, the carbonization uniformity is improved, and the purposes of high carbon powder rate and high quality are achieved at appropriate temperature and time for different raw materials.

Description

technical field [0001] The invention relates to the field of carbon powder production, in particular to a carbon powder production method capable of effectively improving the carbon powder yield and the quality of the carbon powder. Background technique [0002] my country is a large agricultural country with abundant straw resources. The total amount of crop straw produced every year exceeds 600 million tons, of which more than 300 million tons can be used as energy. In recent years, with the development of the rural economy and the improvement of farmers' living standards, conventional energy sources such as coal and liquefied petroleum gas have been used as the first choice for cooking and heating in most rural areas. And pollute the environment. According to the comprehensive utilization of biomass proposed by the National High-tech Agricultural Circular Industry Development Center ("CHCF") and the requirements of the United Nations Food and Agriculture Organization for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B53/02C01B31/02
CPCY02E50/10
Inventor 张森
Owner 吉林省金福一农业科技有限公司
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