CN1667085A

CN1667085A - Process for producing bamboo charcoal

Info

Publication number: CN1667085A
Application number: CNA2004100083458A
Authority: CN
Inventors: 林文炳
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-03-08
Filing date: 2004-03-08
Publication date: 2005-09-14

Abstract

This invention is producing method of bamboo carbon, it relates to the producing method of bamboo carbon. It includes pyrolytic carbonify, fire refining, cool down and back stove three procedures. Burning yield ratio can be improved efficiently, resource consumption is reasonable and the bamboo burned is good of capability. The bamboo carbon yield is more than 15%, bamboo carbon of specific gravity more than 1 can exceed 70%, resistivity is between 0-1000 omega cm. the bamboo carbon has capability of adsorbing acidic and alkaline materials, it can meet existing market needs of using bamboo carbon as health care appliance.

Description

A kind of production method of bamboo charcoal

Technical field

The invention belongs to processing of bamboo wood and destructive distillation field, relate in particular to the production method of bamboo charcoal.

Background technology

For a long time, people mainly rest on the stage of the light a fire heating or the meal of cooking a meal substantially to the utilization of bamboo charcoal.Along with economy and development of science and technology, existing researchist finds that bamboo charcoal has higher utility value: one, can utilize the absorption function of bamboo charcoal, and carry out the absorption of environmental pollutant and remove; Its two, bamboo charcoal has semiconductor property, can utilize its semi-conductor function to carry out the decomposition of environmental pollutant; Its three, bamboo charcoal has the hertzian wave function, can utilize its hertzian wave function to carry out the improvement of electromagnetic wave shielding and magnetic field function.In fact, the nourishing function to human body of bamboo charcoal just progressively comes into one's own.Removing that it had is warm, deodorizing, and sterilization absorbs hertzian wave, and radioprotective produces functions such as far infrared rays, has obtained people's approval, and also continuous release effectively utilizes the product of bamboo charcoal on the market.Therefore, the market requirement of bamboo charcoal also just progressively increases.But in the production process of bamboo charcoal, because of the temperature condition of firing, the influence of factors such as atmosphere, the function of the bamboo charcoal that burns out has great difference.The existing way of firing is the continuity that tradition is fired way mostly, and it is low to exist productive rate, expends fuel, and the bamboo charcoal of firing does not possess defectives such as superperformance.How effectively improving the productive rate that bamboo charcoal is fired, how to produce the bamboo charcoal with superperformance, is the target that many in recent years manufacturers seek assiduously.

Summary of the invention

The object of the present invention is to provide a kind of production technique of bamboo charcoal, effectively improve burning yield, energy consumption bamboo charcoal reasonable and that burn out possesses good performance.

Among the present invention, the production technique of bamboo charcoal comprises pyrolysis charring, the high temperature refining, and three steps of kiln are moved back in cooling.The mao bamboon raw material of selecting for use is the mao bamboon of growth 5-8, and is sawn into the moderate circular thick bamboo tube of length.

In the pyrolysis charring process, earlier the vertical face of bamboo is put into kiln, require the tight dress of dress real, in pyrolytic process, topple over avoiding, after charging finishes, fuel assembly is gone into heating bath, light and heat.Fuel also can be filled the bamboo wood tankage and the wood chip weeds act as a fuel in kiln except adopting coal, and, for reaching temperature required, can also adopt thermoelectric lotus root to heat.In the burning, heating process, adopt 1300 ℃ electronic thermometer to monitor the smoke outlet temperature at any time, monitored once in per 60 minutes, and adjust the size of inlet mouth in good time, control kiln temperature.Pyrolytic process continues 13-14 days, and concrete temperature control scope during this period is: 1-4 days, and 90-150 ℃; 5-7 days, 125-190 ℃; 8-10 days, 170-260 ℃; 10-14 days, 390-560 ℃.

Through behind the pyrolysis charring, enter the high temperature refining stage.With air inlet open, abundant air feed makes bamboo charcoal perfect combustion in the kiln in kiln earlier.Conscientiously observe heat color in the kiln, after through burning in about 30 hours, heat color changes blue look into by redness gradually in the kiln, when the smoke outlet temperature reaches 800-1300 ℃, close inlet mouth and smoke outlet, make the burning kiln be in air-tight state, stop air admission, to reach the purpose of flame-out cooling.

Closed behind inlet mouth and the smoke outlet about 7 days, the temperature variation of observing the smoke outlet outside surface when rate of temperature fall is 45 ℃/h, can be opened wicket, gets charcoal and moves back kiln.

The kiln that this sintering technology adopted is the controlled kiln of heating, and kiln body material inwall is vitrified brick and refractory brick, and outside surface is covered with soil layer.Except that being provided with the combustion chamber, also adopt thermoelectric lotus root heating in kiln body inside, fire the required temperature that reaches in the bamboo charcoal process to reach.Kiln used in the present invention more to appear in the newspapers, and is the industry current techique.

Adopt technology provided by the invention, the productive rate of firing bamboo charcoal is greater than 15%, and proportion surpasses 70% greater than 1 bamboo charcoal ratio, and resistivity is between 0-10 ³Ω .cm.In addition,, therefore burn the functions that the bamboo charcoal of getting has absorption acidity and alkaline matter two aspects, can satisfy well in the market with the demand of bamboo charcoal as health-care product owing to the firing temperature height.

Embodiment

The vertical face of bamboo is put into kiln, require the tight dress of dress real, after charging finishes, in kiln, fill bamboo wood tankage and wood chip weeds and coal and act as a fuel; Fuel assembly is gone into heating bath, light and heat, after temperature surpasses 800 ℃, adopt electric heating warming.In the burning, heating process, adopt 1300 ℃ electronic thermometer to monitor the smoke outlet temperature at any time, monitored once in per 60 minutes, and adjust the size of inlet mouth in good time, control kiln temperature.Pyrolytic process continues 13-14 days, and concrete temperature control scope during this period is: 1-4 days, and about 120 ℃; 5-7 days, about 150 ℃; 8-10 days, about 240 ℃; 10-14 days, 450 ℃.

Through behind the pyrolysis charring, with air inlet open, abundant air feed makes bamboo charcoal perfect combustion in the kiln in kiln.Conscientiously observe heat color in the kiln, after burning in about 30 hours, heat color changes blue look into by redness gradually in the kiln, when the smoke outlet temperature reaches 950 ℃, closes inlet mouth and smoke outlet, makes the burning kiln be in air-tight state, stops air admission.

Closed behind inlet mouth and the smoke outlet 7 days, the temperature variation of observing the smoke outlet outside surface when rate of temperature fall is 45 ℃/h, is opened wicket, gets charcoal and moves back kiln.

The bamboo charcoal productive rate of firing gained at last is 25%, and proportion is greater than 1 bamboo charcoal ratio 80%, and resistivity is between 0-10 ³Ω .cm has the good adsorption performance.

Claims

1, a kind of production method of bamboo charcoal comprises pyrolysis charring, the high temperature refining, and three steps of kiln are moved back in cooling, it is characterized in that:

(1) the pyrolysis charring process continues 13-14 days, and concrete temperature control scope during this period is: 1-4 days, and 90-150 ℃; 5-7 days, 125-190 ℃; 8-10 days, 170-260 ℃; 10-14 days, 390-560 ℃;

(2) high temperature refining stage, earlier with air inlet open, abundant air feed makes bamboo charcoal perfect combustion in the kiln in kiln, when the smoke outlet temperature reaches 800-1300 ℃, closes inlet mouth and smoke outlet, makes the burning kiln be in air-tight state, stops air admission;

(3) close the temperature variation of observing the smoke outlet outside surface behind inlet mouth and the smoke outlet, when rate of temperature fall is 45 ℃/h, open wicket, get charcoal and move back kiln.