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Method for preparing charcoal from wood leftovers

A technology of leftovers and charcoal, which is applied in the fields of biofuel, special dry distillation, petroleum industry, etc. It can solve the problems of difficult recycling, poor utilization effect, and low utilization rate, and achieves difficult flying, fast hydrolysis speed, and good effect Effect

Inactive Publication Date: 2019-03-01
NANJING WUSONG FORESTRY CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] At present, wood waste is mainly used for direct composting, with low utilization rate and poor utilization effect. At the same time, it is difficult to effectively recycle the by-products methanol and tar when preparing charcoal in the prior art.

Method used

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Examples

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Effect test

Embodiment 1

[0031] A preparation method for preparing charcoal from leftover wood, comprising the following steps:

[0032] The first step is to remove water, recycle the wood scraps, and dry them in the sun. The moisture content of the wood is less than 10%;

[0033] In the second step, carbonization, the wood scraps are put into the dry distillation reactor, and the internal heat heating method is used to heat and carbonize the wood scraps. The body is ring-shaped connected to the outer wall of the combustion furnace, and the combustion gas in the gas combustion furnace provides heat energy for carbonization. Spray inorganic salts into the wood scraps in the kettle, so that the inorganic salts and wood scraps are combined and carbonized; charcoal and liquid products are obtained after carbonization is completed;

[0034] The third step is stratification. Liquid products such as coal tar and wood vinegar produced in the carbonization process flow out of the reactor; sedimentation and st...

Embodiment 2

[0046] A method for preparing charcoal from wood waste, comprising the following steps: reclaiming pine wood waste, then drying until the water content of the wood waste is lower than 10%; then putting the waste into a dry distillation kettle for carbonization, Put the wood scraps into the carbonization reaction kettle, and adopt the internal heating method to heat and carbonize the wood scraps. The combustion furnace of the carbonization reaction kettle is a gas combustion furnace, and the combustion furnace is connected to the heat storage body, and the heat storage body is connected to the ring of the combustion furnace. The outer wall, the combustion gas in the gas combustion furnace provides heat energy for carbonization. At the same time, the heat energy is recovered by the heat storage body, which keeps the outer wall of the carbonization reactor warm, and the heat is transferred to the leftovers to achieve carbonization. Spray inorganic salts in the middle, so that inor...

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PUM

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Abstract

The invention discloses a method for preparing charcoal from wood leftovers. The method comprises the following steps: water removal: recycling the wood leftovers and drying in the sun; charring: putting the wood leftovers into a dry distillation reaction kettle, and spraying inorganic salt to the wood leftovers in the dry distillation reaction kettle, wherein a liquid product in the charring process is subjected to settling layering treatment; purifying the liquid product to obtain coal tar; charcoal activation: with an incombustible gas as an activation gas, introducing the activation gas into the dry distillation reaction kettle; charcoal shaping: performing extrusion moulding on the charcoal to make the charcoal into spheres and blocks; cooling the moulded charcoal to room temperature.According to the method for preparing the charcoal from the wood leftovers disclosed by the invention, by firing in the dry distillation kettle, the pyrolysis is fast and has a good effect, the coaltar obtained by the pyrolysis has high purity, and the heat in the dry distillation process can be repeatedly utilized to save energy consumption.

Description

technical field [0001] The invention relates to the technical field of forest product chemicals, in particular to a method for preparing charcoal from wood waste. Background technique [0002] Generally speaking, the industry that uses forest resources as raw materials to produce products needed by human life and production through chemical or biochemical processing methods is called forest chemical industry (referred to as forest chemical industry, forest chemical industry). Products produced in the forest chemical industry are called forest chemicals. Forestry chemical industry is an important basic industry of the national economy, shouldering the dual mission of meeting various needs of daily life and promoting economic development. my country's forestry chemical industry has been developed since the 1960s, and the domestic forestry chemical industry belongs to the secondary industry of the tree industry. Industries based on forest resources include mining and transpor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B53/02C10B57/00
CPCC10B53/02C10B57/00C10B57/005Y02E50/10
Inventor 周金超
Owner NANJING WUSONG FORESTRY CHEM
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