Black liquid bamboo charcoal and manufacturing method thereof

Abstract

The invention provides black liquid bamboo charcoal. The two components of bamboo processing residues and alkali lignin are mixed, and then compression molding is conducted through a pressing machine, and carbonization is conducted so that the black liquid bamboo charcoal is made. Bamboo processing residues such as bamboo branches of truncated bamboo shoots are hard to be utilized by machine-made charcoal manufacturing and are usually burned off, the alkali lignin is also a problem in black liquid recycling management, the alkali lignin is produced by soda pulping or sulfate pulping through acidification, the alkali lignin has the characteristics of high-viscosity and high-calorific value, the two components of the bamboo processing residues and the alkali lignin are mixed and then the compression molding is conducted through the pressing machine, and carbonization is conducted so that the black liquid bamboo charcoal is made. A manner that materials are carbonized in a mold is adopted by the carbonization process, the perfect combination of thermal conditions and anaerobic conditions of the carbonization process is achieved, the produced black liquid bamboo charcoal is high in caloric value, not prone to crushing, regular in products, high in capacity of compression molding, short in production cycle of carbonization in the mold, and capable of being produced in large scale.

Description

【Technical field】 [0001] The present invention relates to a kind of bamboo charcoal and its preparation method. 【Background technique】 [0002] Bamboo charcoal is the main product obtained from bamboo pyrolysis. The burning of bamboo charcoal mainly contains two kinds of methods in the prior art, earthen kiln direct firing and external heating type carbonization kettle dry distillation pyrolysis. Earth kiln direct firing generally uses fresh moso bamboo as the raw material, which is first placed outdoors for about a week and then put into the kiln for smoke pre-drying, drying, pre-carbonization, carbonization, calcination, natural cooling and other procedures to obtain charcoal. This method can obtain bamboo charcoal with high fixed charcoal content, but its production cycle is long and takes more than 20 days; due to air leakage or excessive air volume, the charcoal yield is low, only about 20%; energy consumption is high and environmental burden Heavy, because it needs t...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to overcome the problem of environmental pollution and a large amount of waste of lignin resources caused by pulping and papermaking in the above prior art, the problem that bamboo charcoal production has low output and cannot be scaled up, and the two aspects of bamboo charcoal fixed carbon content and charcoal yield. Insufficient technical indicators, inconvenient packaging and storage and other defects, as well as overcoming the high crushing energy consumption and labor cost of the machine-made charcoal firing method, large drying loss, and more bamboo processing residues such as truncated bamboo shoots and bamboo branches cannot be used problems and deficiencies; provide a kind of bamboo charcoal, that is, black liquid bamboo charcoal, which fully utilizes the by-product lignin resource of pulping and papermaking, changes the manufacturing process in the existing bamboo charcoal production technology, and has a high fixed carbon content in the product, regular shape and heat Value is higher; Another object of the present invention is to provide a kind of manufacture method of described black liquor bamboo charcoal, can realize large-scale production