KR101595502B1 - Dispose of used mushroom medium and a method of manufacturing the pellets - Google Patents

Abstract

The present invention relates to a method for producing a fermented mushroom comprising: pulverizing pellet and waste mushroom medium and coal tar pitch using a waste mushroom culture medium containing 85 to 95 wt% of waste mushroom culture medium, 3 to 10 wt% of coal tar pitch, 2 to 5 wt% of an additive; Drying the pulverized waste mushroom medium and the coal tar pitch to a moisture content of 5 to 10%; Adding an additive to the dried waste mushroom medium and powder of a coal tar pitch to mix; Compressing the mixed mixture at a compression force of 200 to 500 kg / cm < 2 > to produce pellets; And drying the pellet at 60 to 80 ° C. for 1 to 3 hours. The present invention provides a method for producing pellets using the waste mushroom culture medium, which comprises recycling the waste mushroom culture medium to produce pellets It has the effect of creating economic profit. Particularly, the present invention has an effect of improving the combustion efficiency by increasing the amount of heat generated by the pellets. Further, the present invention has the effect of improving the use efficiency by increasing the moldability and density of the pellets.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pellet of a waste mushroom culture medium,

The present invention relates to a pellet using a waste mushroom culture medium and a method for producing the same, and more particularly, to a pellet using a waste mushroom culture medium and a method for producing the same, which can provide pellets having improved calorific value by recycling waste mushroom culture medium as a main raw material .

Generally, pellets are used as boiler fuel by compression molding of wood alone.

These wood pellets are manufactured by crushing the woody part from which the bark of wood imported from Russia, Canada, and Malaysia has been removed into sawdust and molding it, and the wood pellet boiler is installed as a main use for home use. It has become limited.

On the other hand, since the wood pellet is a fuel produced by molding only one kind of wood, the calorie amount may vary from 4,000 to 4,300 kcal / kg or less depending on the type of wood (coniferous tree, And the price is comparable to that of other countries.

In addition, since most of the molded fuels are compressed at high pressures (over 2000 kg / ㎠) and heat, they have a high power ratio. Waste materials with different physical properties, such as RDF and RPF, And the strength of the fuel itself is low, so that dust is generated due to breakage during storage and transportation, and it is not easy to handle, resulting in a problem that the fuel is not used as a solid fuel.

Particularly, there is a molded fuel in which a large amount of a combustion promoter is added to wood pellets. In the case of such a molded fuel, the ignition and efficiency of combustion are increased due to simple effects such as increasing the heat amount. However, , The use of a large amount of chemical additives causes air pollutants to be generated and the economical efficiency is lowered.

In addition, the molded fuel produced by using charcoal obtained by carbonizing wood in the above-mentioned molded fuel and anthracite with an average of more than 4,000 kcal / kg or the like can be expected to have a high calorific value because of its relatively high carbon content, Carbonized charcoal and anthracite coal are still used for domestic fuels and industrial purposes, so they are limited in terms of recycling waste resources.

Korean Patent Publication No. 10-2011-0121485 (2011.11.07) Korean Patent No. 10-1138424 (2012.04.26) Korean Patent No. 10-1188454 (Oct. 9, 2012)

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art,

It is an object of the present invention to provide a pellet using a waste mushroom culture medium which can utilize a waste mushroom culture medium as a raw material and can recycle waste resources including coal tar pitch and additives, and improve combustion efficiency, and a manufacturing method thereof.

Another object of the present invention is to provide a pellet using a waste mushroom culture medium which can be molded at a low pressure and has high fuel strength and high density, and a method for producing the same.

To achieve the above object, the present invention provides a pellet using a waste mushroom culture medium,

85 to 95% by weight of a waste mushroom medium, 3 to 10% by weight of a coal tar pitch, and 2 to 5% by weight of an additive.

Wherein the additive is any one selected from starch, PVA and molasses.

In addition, the present invention provides a method for producing pellets using a waste mushroom culture medium,

Pulverizing the waste mushroom medium and the coal tar pitch;

Drying the pulverized waste mushroom medium and the coal tar pitch to a moisture content of 5 to 10%;

Adding an additive to the dried waste mushroom medium and powder of a coal tar pitch to mix;

Compressing the mixed mixture at a compression force of 200 to 500 kg / cm < 2 > to produce pellets;

And drying the pellets at 60 to 80 캜 for 1 to 3 hours.

Particularly, in the pulverizing step, the waste mushroom culture medium is pulverized to a size of 3 to 10 mesh, and the coal tar pitch is pulverized to a size of 30 to 50 mesh.

The present invention has the effect of producing economical benefits by manufacturing the pellets by recycling the discarded waste mushroom culture medium.

Particularly, the present invention has an effect of improving the combustion efficiency by increasing the amount of heat generated by the pellets.

Further, the present invention has the effect of improving the use efficiency by increasing the moldability and density of the pellets.

The manufacturing composition and the manufacturing steps for achieving the object of the present invention as described above will be described in more detail as follows.

In the pellet of the present invention using the waste mushroom culture medium,

85 to 95% by weight of a waste mushroom medium, 3 to 10% by weight of a coal tar pitch, and 2 to 5% by weight of an additive.

First, the content of ternary powder, the element composition, and the calorific value of the raw fungus mushroom medium and the coal tar pitch used in the present invention were analyzed.

As can be seen from the above Table 1, in the case of the waste mushroom culture medium, the low calorific value was 3,800 kcal / kg or more, and the ash content was small, and the low calorific value was slightly decreased during the production of the pellets, .

In addition, in the case of coal tar pitch, the ash content is higher than that of the waste mushroom culture medium, the convenience of post treatment by burning during pellet production can be improved, and the compression density and durability of the fuel can be maintained.

In the present invention, when the waste mushroom culture medium is 95 wt% or more, unnecessary weight is added to lower the compression density of the waste mushroom culture medium. When the waste mushroom culture medium is 85 wt% or less, the amount of calorific value of the waste mushroom culture medium is low, It is preferably 85 to 95% by weight in order to solve this problem.

On the other hand, since the carbon content ratio of the coal tar pitch is high, it is possible to increase the heating efficiency and to improve the combustion efficiency.

When the pitch of the coal tar is 10 wt% or more, the amount of heat can be secured, but the production cost is large. When the pitch is 3 wt% or less, the calorific value is decreased. Therefore, the coal tar pitch is preferably 3 to 10 wt%.

In the present invention, the additive increases the binding force between the waste mushroom medium and the coal tar pitch during the production of the pellets, thereby contributing to the improvement of the density and improving the durability.

At this time, any one of starch, PVA or molasses may be selected as an additive.

If the amount of the additive is 5 wt% or more, the pellet raw material can not be efficiently used due to excessive use, the amount of heat generated is reduced, the incombustibility is not easy and the incombustible material is added, There is a problem in that durability such as tensile strength is lowered due to failure to impart the bonding force of the materials during the production of the pellets, so 2 to 5% by weight is preferable.

In addition, the method for producing pellets using the waste mushroom medium having the composition and composition ratio as described above,

Pulverizing the waste mushroom medium and the coal tar pitch;

Drying the pulverized waste mushroom medium and the coal tar pitch to a moisture content of 5 to 10%;

Adding an additive to the dried waste mushroom medium and powder of a coal tar pitch to mix;

Compressing the mixed mixture at a compression force of 200 to 500 kg / cm < 2 > to produce pellets;

And drying the prepared pellets at 60 to 80 캜 for 1 to 3 hours.

First, in the pulverizing step, the waste mushroom culture medium is pulverized to a size of 3 to 10 mesh to increase combustion efficiency, and the coal tar pitch can be pulverized to a size of 30 to 50 mesh to increase the complexing efficiency.

Next, the pulverized waste mushroom medium and the coal tar pitch can be dried until the water content reaches 5 to 10% by using a drier to improve the workability in manufacturing the pellets and increase the combustion efficiency.

At this time, since the waste mushroom culture medium contains moisture during mushroom cultivation, a drying step is performed to remove the moisture content.

The mixing step may include adding additives to the waste mushroom culture medium and the coal tar pitch powder to improve the bonding strength and the tensile strength to increase the durability in manufacturing the pellet.

In addition, when the pellet is molded at a compressive force of 200 kg / cm 2 or less, the compressive density for maintaining the shape of the pellet is lowered. When molding is performed at a compression force of 500 kg / cm 2 or more, unnecessary power is generated, It is preferable to perform compression molding at a compression force of 200 to 500 kg / cm 2.

Here, the apparatus for forming and manufacturing the pellet is commonly used in the art, so a detailed description of the operation principle and structure will be omitted.

Finally, the drying step is performed at 60 to 80 ° C for 1 to 3 hours, which can improve the efficiency of combustion by drying the moisture remaining in the produced pellets.

Accordingly, the present invention can provide an environmentally friendly pellet having improved heating value and excellent fuel quality by mixing the waste mushroom culture medium with the coal tar pitch and mixing the additives.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, Of course.

Claims (4)

delete delete Pulverizing 85 to 95% by weight of the waste mushroom medium to a size of 3 to 10 mesh and pulverizing 3 to 10% by weight of the coal tar pitch to a size of 30 to 50 mesh;
Drying the pulverized waste mushroom medium and the coal tar pitch to a moisture content of 5 to 10%;
Adding 2 to 5% by weight of an additive using any one selected from the group consisting of starch, PVA and molasses to the dried waste mushroom medium and the powder of coal tar pitch;
Compressing the mixed mixture at a compression force of 200 to 500 kg / cm < 2 > to produce pellets;
And drying the pellet at 60 to 80 ° C for 1 to 3 hours. delete