CN101085677B

CN101085677B - Bamboo charcoal activation producing process

Info

Publication number: CN101085677B
Application number: CN2007100041459A
Authority: CN
Inventors: 陈文照
Original assignee: SUICHANG WENZHAO BAMBOO CHARCOAL CO Ltd
Current assignee: SUICHANG WENZHAO BAMBOO CHARCOAL CO Ltd
Priority date: 2007-01-01
Filing date: 2007-01-01
Publication date: 2011-03-16
Anticipated expiration: 2027-01-01
Also published as: CN101085677A

Abstract

The invention relates to a process of producing bamboo activated carbon. It comprises following steps: selecting raw material, placing raw material in furnace, smoking and dehydrating, dry distilling and charring, refining, spraying steam and sealing furnace. The processes of smoking and carbonizing clear bamboo charcoal micro-pore, increase absorption and conductivity for bamboo charcoal. The invention is characterized by simple process, low cost, easy got raw material, high recovery rate, no pollution during producing process and natural product.

Description

Bamboo charcoal activation producing process

Technical field

The present invention relates to a kind of technology of making charcoal, relate in particular to a kind of production technique of firing bamboo matter carbon activityization.

Background technology

Touching gac in the actual life, is raw material with the charcoal mainly, by secondary combustion, utilizes the stack gas activation, from timber to the black wood charcoal, utilization ratio has only 28%, and in second time reactivation process, a large amount of charcoal molecules are run away, and per three tons of charcoals can only reclaim one ton of gac, and the resource consumption is too big.Have kind of a chemical method to produce gac, the rate of recovery is slightly high, but the contaminated wastewater of producing is serious, influences environment protection.The application for a patent for invention of application number 98115886.2 by retrieval, a kind of production technique of bamboo charcoal is disclosed, but it lacks special sensitization production technique, so every performance index of this bamboo charcoal such as wettability power, deodorizing capability, screening ability and barbecue performance are all good not as the bamboo charcoal after the sensitization.

Summary of the invention

The present invention is directed to the above deficiency of prior art, and provide a kind of production technique simple, pollution-free, the bamboo matter carbon activity production technique that every performance index energy and wood activated charcoal match in excellence or beauty.

Purpose of the present invention, adopt following method to realize:

A kind of process for preparing activated carbon from bamboo is to comprise following production process:

1, material choice operation: mao bamboon is sawn into thick bamboo tube, and the back of drying in the shade is stand-by;

2, raw material loading of kiln operation: bamboo mao bamboon tube is loaded in the kiln according to certain rules, and the sealing wicket stays a burning osculum;

3, smoke the cigarette dehydration procedure:, kiln temperature is controlled at 25 ℃ in the igniting of burning osculum--105 ℃, steam cigarette dehydration 6--10 days with flue gas: '

4, dry distillation charring operation: be warming up to 150 ℃ in the kiln--about 300 ℃, bamboo charcoal is dry distillation charring under the state of partial vacuum, keeps 4 days:

5, refining procedure: slightly open wicket, increase oxygen supply, make to be warmed up to 700 ℃ in the kiln--1000 ℃,, kept 1 hour;

6, sensitization operation: establish gas orifice in the wicket middle and lower part, toward the interior water spray of kiln steam, seal wicket and chimney again with special steam generator;

7, envelope firer preface: with the bamboo charcoal after jet at kiln inner sealing kiln discharge after 4 days.

The present invention compared with prior art, smoke the activated carbon from bamboo that cigarette method and partial vacuum sensitization technology are fired owing to adopted, make bamboo charcoal physically activated thoroughly, mediation has also enlarged the bamboo charcoal micropore, increased the specific surface area of bamboo charcoal significantly, bringing up to 700-900 square centimeter/gram by original 192--360 square centimeter/gram, is 2--3 times of prior art.The activated technology of bamboo charcoal has strengthened the energy of charcoal molecule, has fundamentally improved moisture absorption, the deodorizing capability of bamboo charcoal, and every performance index energy and wood activated charcoal match in excellence or beauty, and technology is simple, and is with low cost, draws materials easily, rate of recovery height, production process is pollution-free, is the pure natural environment protection product.

Specific implementation method

Production technique of the present invention comprises following several process

One, material choice operation: adopt the 5-8 bamboo mao bamboon in age, be sawn into 2-2.5 rice Long Circle thick bamboo tube, the loading of kiln in 4 days of drying in the shade:

Two, raw material loading of kiln operation: according to diameter, from the inside to surface, interior thick outer thin, standing upside down is loaded in the kiln with circular thick bamboo tube, and the sealing wicket stays a little burning to steam mouth;

Three, smoke the cigarette dehydration procedure: advancing the quirk fuel combustion, temperature is at 25 ℃ in the control--105 ℃ (about), smoke the cigarette 8 day time of dehydration with stack gas;

Four, dry distillation charring operation: the former bamboo after last operation, its moisture content are all discharged, and continue to be warmed up to 150 ℃ this moment--and 300 ℃, bamboo charcoal carries out dry distillation charring under the state of partial vacuum, kept 4 days, this moment, kiln top smoke outlet was discharged clear cigarette, the complete charing of mao bamboon in the expression kiln;

Five, refining procedure: the manual labour wicket rises to 700--800 ℃ with kiln temperature, and the charcoal molecular aggregates in the bamboo charcoal is tightened, and increases oxygen supply from top to bottom, and the kiln temperature sharply rises to about 900 ℃, and visual inspection has the blue flame wriggling to rise, and keeps 30 minutes;

Six, sensitization operation: after treating that the charcoal molecule is assembled deflation fully, open the gas orifice of wicket middle and lower part, gas orifice is the 500-550 millimeter at the bottom of kiln, spray a small amount of water vapor to gas orifice earlier with electric heating steam generator, blue flame on the bamboo charcoal is progressively desalinated until cannot see, strengthen jet amount afterwards gradually, vapor pressure＜the 0.11Mpa of vapour generator, steam production is at 8-10kg, and sprays into the quantity of steam control of the 1kg left and right sides by every cubic metre of bamboo charcoal, steam from the rapid ascension of kiln side to the top, become high-temperature steam again under main header casing, kiln words spoken by an actor from offstage mist is filled the air, and bamboo charcoal is among the complete anaerobic vacuum, seals wicket and chimney this moment immediately;

Seven: envelope firer preface: the bamboo charcoal that will spray behind the steam goes out charcoal at the kiln inner sealing about 4 days.

Claims

1. bamboo charcoal activation producing process is characterized in that comprising following production process:

(1) material choice operation: mao bamboon is sawn into thick bamboo tube, and the back of drying in the shade is stand-by;

(2) raw material loading of kiln operation: the mao bamboon tube is loaded in the kiln according to certain rules, and the sealing wicket stays a burning osculum;

(3) smoke the cigarette dehydration procedure:, kiln temperature is controlled at 25 ℃ in the igniting of burning osculum--about 105 ℃, steam cigarette dehydration 6--10 days with flue gas;

(4) dry distillation charring operation: be warming up to 150 ℃ in the kiln--about 300 ℃, bamboo charcoal is dry distillation charring under the state of partial vacuum, keeps 4 days:

(5) refining procedure: open wicket, be warmed up to 700 ℃ in the kiln--1000 ℃, increase oxygen supply, kept 1 hour:

(6) sensitization operation: open the wicket gas orifice, toward the interior water spray of kiln steam, gas orifice is the 500-550 millimeter at the bottom of kiln, spray a small amount of water vapor to gas orifice earlier with electric heating steam generator, blue flame on the bamboo charcoal is progressively desalinated until cannot see, strengthen jet amount afterwards gradually, vapor pressure＜the 0.11Mpa of vapour generator, steam production is at 8-10kg, and spraying into the control of 1kg left and right sides quantity of steam by every cubic metre of bamboo charcoal, steam to the top, becomes high-temperature steam from the rapid ascension of kiln side again under main header casing, bamboo charcoal is among the complete anaerobic vacuum, seals wicket and chimney this moment again;

(7) envelope firer preface: with the bamboo charcoal after jet at kiln inner sealing kiln discharge after 4 days.