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Method for producing environment-friendly coal from straws

A production method and straw technology, applied in the direction of biofuels, waste fuels, etc., can solve the problems of uneven carbonization, low carbon density, excessive carbonization, etc., achieve the effect of smooth surface, increase carbon density, and prevent excessive carbonization

Inactive Publication Date: 2012-06-20
TONGREN HUIMIN GASIFIER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, many companies are trying to use straw to make environmentally friendly carbon, and the main process of using straw to make environmentally friendly carbon is the process of crushing, forming, carbonization, and activation. The shortcomings of the environmentally friendly carbon produced in this way are mainly reflected in: high temperature carbonization During the process, excessive carbonization often occurs due to excessive burning of straw, or the temperature is insufficient. After carbonization, the surface is rough, easy to break, easy to carbonize unevenly, etc., with low carbon density, low calorific value, and high defective rate, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The production method of straw environmental protection carbon comprises the following steps:

[0025] (1) Carry out batching according to the implementation component of following weight ratio, coal 3, straw 97, flame retardant 0.5;

[0026] (2) the stalks, coal and flame retardant of the above weight ratio are pulverized respectively;

[0027] (3) putting the straw powder obtained by pulverizing into a dryer for drying to ensure that the moisture content of the straw is 10%;

[0028] (4) Take out the stalk obtained by drying, add coal powder and mix evenly to obtain mixed powder;

[0029] (5) Put the above-mentioned mixed powder into a compression molding machine and carry out compression molding to make particles with a diameter of 6 mm and a length of 20 mm;

[0030] (6) Heating the obtained particles for the first time, the heating temperature is 150°C, and the heating time is 60min;

[0031] (7) cooling the above-mentioned granules, and then pulverizing the gra...

Embodiment 2

[0039] The production method of straw environmental protection carbon comprises the following steps:

[0040] (1) carry out batching according to the implementation component of following weight ratio, coal 5, straw 95, flame retardant 0.1;

[0041] (2) the stalks, coal and flame retardant of the above weight ratio are pulverized respectively;

[0042] (3) putting the straw powder obtained by pulverizing into a dryer for drying to ensure that the moisture content of the straw is 20%;

[0043] (4) Take out the stalk obtained by drying, add coal powder and mix evenly to obtain mixed powder;

[0044] (5) Put the above-mentioned mixed powder into a compression molding machine and carry out compression molding to make particles with a diameter of 15mm and a length of 50mm;

[0045] (6) Heating the obtained particles for the first time, the heating temperature is 200°C, and the heating time is 20 minutes;

[0046] (7) cooling the above-mentioned granules, and then pulverizing the...

Embodiment 3

[0054] The production method of straw environmental protection carbon comprises the following steps:

[0055] (1) carry out batching according to the implementation component of following weight ratio, coal 4, straw 95, flame retardant 0.2;

[0056] (2) the stalks, coal and flame retardant of the above weight ratio are pulverized respectively;

[0057] (3) putting the straw powder obtained by pulverizing into a dryer for drying to ensure that the moisture content of the straw is 16%;

[0058] (4) Take out the stalk obtained by drying, add coal powder and mix evenly to obtain mixed powder;

[0059] (5) Put the above-mentioned mixed powder into a compression molding machine and carry out compression molding to make particles with a diameter of 10mm and a length of 40mm;

[0060] (6) Heating the obtained particles for the first time, the heating temperature is 160°C, and the heating time is 50min;

[0061] (7) cooling the above-mentioned granules, and then pulverizing the gran...

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Abstract

The invention discloses a method for producing environment-friendly coal from straws. The method comprises the following steps of: preparing raw materials, grinding, primarily forming, pre-heating, grinding again, heating, activating, cooling, sieving and packaging. The invention has the benefits that the method effectively prevents excessive carbonization, increases carbon density and reduces defective rate; and the coal product is characterized in having a smooth surface and being not liable to fracture and uniformly carbonized. The method utilizes waste straws in rural areas to produce straw-derived coal, so as to achieve the purpose of turning waste into treasure, prevent environmental pollution and save resources.

Description

technical field [0001] The invention relates to a production method of straw environmental protection carbon. Background technique [0002] With the rapid development of the economy, energy is becoming more and more scarce in the market, and the contradiction between supply and demand is intensifying. As a new type of energy, environmentally friendly carbon not only effectively alleviates the contradiction between supply and demand, but also reduces environmental pollution to a large extent. Therefore, all countries are trying to use artificial methods to quickly turn straw into environmentally friendly carbon in a short period of time. [0003] Relevant research by the International Energy Agency shows that straw is a good clean and renewable energy source, and its average sulfur content is only 3.8‰, while the average sulfur content of coal is above 10%. It has been determined that the calorific value of straw is about 15000kj / kg, which is equivalent to 50% of standard co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L5/44
CPCY02E50/30Y02E50/10
Inventor 龚泽
Owner TONGREN HUIMIN GASIFIER
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