CN1216130C

CN1216130C - Process for preparing electric bamboo charcoal

Info

Publication number: CN1216130C
Application number: CN021292809A
Authority: CN
Inventors: 周娟
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-09-29
Filing date: 2002-09-29
Publication date: 2005-08-24
Anticipated expiration: 2022-09-29
Also published as: CN1485400A

Abstract

The present invention relates to a method for using bamboo to prepare conductive bamboo charcoal. Bamboo is cut and orderly and vertically stacked in a controllable carbide furnace for combustion; during combustion, the temperature is controlled by stages; after being formed, the bamboo charcoal is put in a solution containing acid for being soaked and washed; then, the bamboo charcoal is dried; finally, the bamboo charcoal is processed into various shapes according to different purposes, such as barrel charcoal, sheet charcoal, granule charcoal and powder charcoal. The conductive bamboo charcoal made by using the method has the electric conductivity higher than 80% and has the advantages of high brightness and hardness of bamboo charcoal surface, little possibility of breaking, high rate of finished products, stable quality, good adsorption performance, short production period, high efficiency and low cost.

Description

A kind of method of producing electric bamboo

Technical field

The present invention relates to the destructive distillation production method of carbonaceous material, particularly a kind of method of producing electric bamboo.

Background technology

At present, China's method of firing bamboo charcoal mainly contains destructive distillation pyrolysis method, earth kiln and directly fires two kinds of methods.Destructive distillation pyrolysis method bamboo charcoal yield is higher, but refining temperature is carried not high and is influenced bamboo charcoal density, therefore electric conductivity is difficult to improve: earth kiln is directly fired method, with earth kiln bamboo charcoal base is first processing stand, with the branch bavin is thermal source, heat through loading of kiln, igniting, high temperature carbonization reaches and forms the bamboo charcoal blank about 20 days, detects resistivity more as required and carries out sorting.This method charring process time is long, and temperature is difficult to grasp, and the percentage of A-class goods is lower, wastes raw material and fuel, and the cost height yields poorly, and can not meet the need of market.As number of patent application is that just there are many defectives in the method that 98115886.2 " purpose made technology of a kind of bamboo charcoal and products thereof and use " set forth: one, bamboo primary combustion in stove forms, charing is inhomogeneous, too much by furnace bottom layer raw material, yield rate is low, that have even incinerated and do not become charcoal, and certified products bamboo charcoal surface gloss not; They are two years old, this method is taken out bamboo charcoal in the stove to be embedded in and is cooled to normal temperature in the plant ash, oxidation takes place in not only complex operation, and bamboo charcoal easily, influences the attractive in appearance of bamboo charcoal epidermis, the phenomenon of bamboo charcoal explosion simultaneously is serious, product intensity is little, easy fracture, and loss is big, but also easily be sticky with dust, influence the bamboo charcoal performance; Its three, bamboo charcoal is washed, is dried without bubble, finished product contains dust, impurity, the surface is gloss not, electric conductivity is low, poor stability.

Summary of the invention

The object of the present invention is to provide a kind of energy high-level efficiency, low cost, make the electric bamboo preparation method of made bamboo charcoal electric conductivity height, good stability.

Purpose of the present invention can realize by following technical solution: bamboo is blocked perpendicular successively folding in controllability charring furnace internal combustion, adopt graded temperature-control in combustion processes.When furnace temperature rises to 1500 ℃; closed furnace door and chimney; its disconnected oxygen is ceased fire, and cooling gradually is when temperature in the stove is reduced to 700 ℃; blow-on door and chimney firing up again; when temperature in the stove reached 1500 ℃, banking door, chimney made it progressively be cooled to normal temperature again, took out bamboo charcoal then and put into the solution of acid content 1% and soaked 2 hours; the back is cleaned with clear water, take out at last put into oven dry kiln drying 4 hours the finished product bamboo charcoal.Can be processed into different shapes by different purposes bamboo charcoals, as tube charcoal, sheet charcoal, grain charcoal, burgy.

The electroconductibility of bamboo charcoal is relevant with factors such as the density of bamboo charcoal, degree of refining, water ratio, ash oontent, the present invention is because bamboo charcoal adopts graded temperature-control in the incendiary process, igniting, banking are controlled naturally, logical oxygen, ventilation rationally, so bamboo charcoal produces physical change in the burning carbonate process, thereby precision is strengthened, volume reduces, hardness increases, and specific conductivity improves, and phenomenon of rupture reduces.Bamboo charcoal carbon plate, carbon granule are washed by bubble, but lixiviating, disacidify reduces the carbon granule pH value, but and dedusting, removal of impurities, remove the ash content in the micropore, solve black-envelope and infect problem, surface-brightening, formed product.By drying the water content that can reduce bamboo charcoal, make the specific conductivity of bamboo charcoal keep stable.

The present invention compared with prior art, the bamboo charcoal electric conductivity of being produced improves greatly, reaches 80%, the bamboo charcoal surface-brightening, steady quality, the finished product rate improves more than 20%, the charcoal processing cycle shortens more than 1/3, fuel saving is more than 20%, cost reduces more than 25%.

Embodiment

Bamboo is blocked perpendicular successively folding in the controllability charring furnace, and folded close-up row do not interspace.About 30 minutes of the fuel (coal) of lighting a fire then in the ignition furnace doorway, bamboo begins spontaneous combustion in the stove, temperature raises gradually in the stove, when temperature rises to 1500 ℃ in the about time stove, closed furnace door and chimney, the cease combustion of stove internal cause anoxic, temperature descends gradually, about about 2 days, temperature drops to 700 ℃, open fire door and chimney this moment again, fire fuel, and bamboo begins spontaneous combustion again in about more than the ten minutes stoves, temperature is elevated to 1500 ℃ gradually once more, close fire door and chimney this moment the interior temperature of stove is descended gradually, approximately through 6 day time, temperature is reduced to normal temperature in the stove.Open fire door then, take out bamboo charcoal and put into an acid proof container, pour the acidic solution of acid content 1% in the container into, bamboo charcoal is soaked, soak to take out with clear water again after 2 hours and clean, pull out after the cleaning and put into drying kiln and dry, through 4 hours oven dry, the finished product bamboo charcoal.Can be processed into different shape by different purposes bamboo charcoals, as tube charcoal, sheet charcoal, grain charcoal, burgy.

Claims

1, a kind of method of utilizing bamboo to produce electric bamboo, bamboo blocked put into controllability charring furnace internal combustion, it is characterized in that: in combustion processes, adopt graded temperature-control, earlier stove is warming up to 1500 ℃, banking door, chimney make it be cooled to 700 ℃ gradually then, open fire door, chimney firing up to 1500 ℃ again, and then banking door, chimney are cooled to normal temperature gradually, then bamboo charcoal being taken out the solution of putting into acid content 1% soaked 2 hours, take out again with clear water and clean, put into the oven dry kiln drying at last and got final product in 4 hours.