KR101143373B1

KR101143373B1 - Composition for solid fuel using waste activated carbon and process for preparing the same

Info

Publication number: KR101143373B1
Application number: KR20100071673A
Authority: KR
Inventors: 서용교
Original assignee: 주식회사 대원지에스아이
Priority date: 2010-07-23
Filing date: 2010-07-23
Publication date: 2012-05-18
Also published as: KR20120009368A

Abstract

PURPOSE: A composition for a solid fuel using waste activated carbon and a method for manufacturing the same are provided to prevent the generation of smoke in case of combustion and to expand combustion time. CONSTITUTION: A composition for a solid fuel includes 35-45 weight% of waste activated carbon, 45-55 weight% of rice hull charcoal, and 5-15 weight% of sawdust. The waste activated carbon is absorbed with rice hull vinegar liquid and crude tar. A method for manufacturing the composition includes the following: the waste activated carbon, the rice hull charcoal, and the sawdust are mixed; the mixture is extruded under a temperature between 100 and 120 degrees Celsius; and the extruded material is cut into pellets.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composition for a solid fuel using waste activated carbon,

The present invention relates to a composition for a solid fuel using waste activated carbon and a method of manufacturing the same.

It is generally known that oak charcoal is the best charcoal used as fuel. However, since oak charcoal has very limited raw material supply and low profitability, it is currently used in charcoal, which is made from sawdust and wood waste materials. The carbonized charcoal is produced by injecting a raw material through an injection machine and then carbonizing it. Since it is pre-dried, volatile matter and point economy are removed, and there is an advantage that no odor or smoke is generated. However, There are disadvantages.

As a conventional solid fuel, activated carbon has been used as its main material. For example, in Korean Patent Registration No. 10-0153137, wood powder of 13 to 17% (w / w), activated carbon of 35 to 40% (w / w) as a fuel material, coal powder or charcoal powder alone To 22% (w / w) of a solid fuel composition comprising 10 to 15% (w / w) of a solids and 6 to 8% (w / w) Discloses a method for producing fuel. However, since the activated carbon is relatively expensive, the production cost is increased, and the raw material itself is burned, and the use time is relatively short.

In addition, the waste activated carbon remaining after using activated carbon is not used but is being abandoned. Therefore, recently, the problem of disposal of industrial wastes in the processing process of agriculture, forestry, and minerals has reached a serious state in the nation, and therefore, there is a need to improve the utilization of waste resources by using such wastes as heating and cooking fuel Research is steadily progressing. However, research and development of solid fuel using waste activated carbon have not been conducted yet.

Therefore, there is a need for research and development of solid fuel using waste activated carbon.

The present inventors have studied a solid fuel using waste activated carbon. A solid fuel composition containing a specific amount of waste activated carbon, rice husk charcoal and sawdust adsorbed with rice husk liquid and natural tar was prepared. The inventors have confirmed that the smoke is not generated during combustion and the combustion time is comparatively long, so that the applicability to fuel is excellent, and the present invention has been completed.

The present invention provides a composition for a solid fuel using waste activated carbon and a method for producing the same.

The present invention provides a solid fuel composition comprising 35 to 45% by weight of waste activated carbon adsorbed on a chaff base liquid and natural tar, 45 to 55% by weight of chaff charcoal, and 5 to 15% by weight of sawdust.

In addition,

(a) mixing 35 to 45% by weight of activated charcoal with activated charcoal powder and natural tar, 45 to 55% by weight of chaff charcoal, and 5 to 15% by weight of sawdust, and extruding at 100 to 120 ° C; And

and (b) cutting the extrudate into pellets.

Hereinafter, the present invention will be described in detail.

The composition for solid fuel according to the present invention is characterized by containing 35 to 45 wt% of waste activated carbon in which chaff extract and natural tar are adsorbed, 45 to 55 wt% of chaff charcoal, and 5 to 15 wt% of sawdust.

The activated carbon of the present invention can produce a high calorific value with a small amount of fuel due to the adsorption of the chaff extract and the natural tar, It removes the smell of fish and breaks down the fats of the meat to give a unique flavor and flavor to the meat. The content of the waste activated carbon is preferably 35 to 45% by weight based on the total weight of the composition. If the content of the waste activated carbon exceeds 45% by weight, the amount of smoke increases. If the amount of the waste activated carbon is less than 35% by weight, the combustion time is shortened.

The chaff charcoal stabilizes the flame at the time of combustion to an appropriate size and generates far-infrared rays, so that the object to be cooked is constantly heated continuously. The content of the chaff char is preferably 45 to 55% by weight based on the total weight of the composition. If the content of the chaff char is more than 55% by weight, the effect of the remaining ingredients hardly appears, and if the content of the chaff char is less than 45% by weight, flame does not occur.

Said sawdust minimizes smoke in combustion, promotes ignition, and prolongs combustion time. The sawdust content is preferably 5 to 15% by weight based on the total weight of the composition. If the content of the sawdust exceeds 15% by weight, the effect of the remaining ingredients hardly appears, and if the content of the sawdust is less than 5% by weight, smoke is increased.

The solid fuel composition of the present invention is characterized by drying and finely pulverizing 35 to 45% by weight of waste activated charcoal adsorbed with rice husk liquor and natural tar, 45 to 55% by weight of chaff charcoal and 5 to 15% by weight of sawdust, Mixing and extruding at 100 to 120 ° C to cut into pellets. The size of the cut pellets is preferably 5 to 6 mm in thickness and 10 to 20 mm in length, but is not limited thereto. At this time, harmful components of the natural tar are burned out.

The waste activated carbon is prepared by adding activated charcoal to the rice husk liquor and stirring at 70 to 80 ° C, followed by compression and filtration with a pressure filter, and drying the activated charcoal remaining in the pressure filter at 35 to 45 ° C. The crude rice husk liquor is firstly purified by supplying crude rice husk to a raw material charcoal furnace and performing ultra-liquid condensation, and then separating the tar to prepare crude rice husk liquor. The crude rice liquor liquor is firstly purified by distillation under reduced pressure, After the tea is purified, it is purified by tertiary purification to produce activated carbon.

The composition for a solid fuel according to the present invention uses waste activated carbon and does not generate smoke during combustion and has a comparatively long combustion time. In addition, when the meat is cooked using the composition for solid fuel of the present invention, the natural smoke smell unique to the rice husk liquid adsorbed on the activated carbon adsorbs to the meat, and the flavor and the preference are excellent. Therefore, the composition for solid fuel of the present invention can be usefully used as a frying meat for grilling meat.

Hereinafter, the present invention will be described in detail with reference to examples. However, the following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

Example 1: Preparation of composition for solid fuel

The rice flour (rice by-product) was fed to the flame-type carbonization furnace as a raw material at a rate of 4 ton / day to perform ultra-liquid condensation. The tar was then separated to prepare a crude rice husk sol. The crude rice husk liquor was subjected to a primary purification by distillation under reduced pressure in a super-liquid crystal plant, followed by a secondary purification by filtration with a betonite, followed by a third purification with a pressure filter, and the activated carbon was filtered to prepare a rice husk liquor. 2 wt% of activated carbon was added to the prepared rice husk solution, stirred for more than 12 hours at 80 ° C, and then compressed and filtered with a pressure filter. The activated carbon remaining in the pressure filter was dried at 40 ° C for 12 hours to produce waste activated carbon having adsorbed chaff extract and natural tar.

40 wt% of the activated charcoal powder and natural tar-adsorbed waste charcoal, 50 wt% of chaff charcoal, and 10 wt% of sawdust were evaporated in a drier until the water content became 2% or less. Then, activated charcoal, rice husk charcoal and sawdust adsorbed with chaff extract and natural tar were finely pulverized to a size of about 250 mesh. The pulverized powders were thoroughly mixed using a mixer, and the mixed powders were continuously introduced into a high-pressure extruder maintained at 100 to 120 ° C to push out the extrudates with high-pressure molding. At this time, a method in which a mechanical device is added in place of the continuous introduction method, and the composition is forcibly added to the extruder. Then, the extrudate extruded from the extruder was quenched to prevent rapid water evaporation, and then cut into pellets having a thickness of 5 to 6 mm and a length of 10 to 20 mm to prepare a solid fuel composition.

Comparative Example 1 to 11: Preparation of composition for solid fuel

A composition for a solid fuel was prepared in the same manner as in Example 1, except that the composition ratio of the activated carbon, the chaff charcoal and the sawdust was changed in Example 1.

The composition ratios of the solid fuel compositions of Comparative Examples 1 to 11 are shown in Table 1 below.

Components (% by weight) Activated carbon Chaff charcoal sawdust Comparative Example 1 80 10 10 Comparative Example 2 70 20 10 Comparative Example 3 60 30 10 Comparative Example 4 50 40 10 Comparative Example 5 50 30 20 Comparative Example 6 50 20 30 Comparative Example 7 40 40 20 Comparative Example 8 30 60 10 Comparative Example 9 30 50 20 Comparative Example 10 20 70 10 Comparative Example 11 20 60 20

Experimental Example 1: Combustion experiment of composition for solid fuel

Combustion experiments were conducted using the composition for solid fuel prepared in Example 1 and Comparative Examples 1 to 11. That is, the composition for solid fuel of Example 1 and Comparative Examples 1 to 11 was placed in an oven and ignited, and the state of burning was visually observed.

The results of observation of the combustion state of the composition for a solid fuel are shown in Table 2 below.

Observation state Example 1 Smoke is not emitted and combustion time is comparatively steady Comparative Example 1 A lot of smoke and no flames Comparative Example 2 A lot of smoke and no flames Comparative Example 3 A lot of smoke and no flames Comparative Example 4 Flame does not occur but combustion time is steady Comparative Example 5 A lot of smoke and no flames Comparative Example 6 Large amount of smoke and short burning time Comparative Example 7 Flame does not occur but combustion time is steady Comparative Example 8 No smoke but short combustion period Comparative Example 9 No smoke but short combustion period Comparative Example 10 No smoke but short combustion period Comparative Example 11 No smoke but short combustion period

As shown in Table 2, in the case of the composition for solid fuel of the present invention (40 wt% of waste activated carbon, 50 wt% of chaff charcoal and 10 wt% of sawdust), no smoke was generated and combustion time was relatively long. On the other hand, the compositions for solid fuel of Comparative Examples 1, 2, 3, 5 and 6 contained too much waste activated carbon components, resulting in a large amount of smoke during combustion, and the composition for solid fuel of Comparative Examples 1 to 5 and 7, The flame was not generated, and the combustion time of the compositions for solid fuel of Comparative Examples 6 and 8 to 11 was short.

Experimental Example 2: Flavor and preference experiment of composition for solid fuel

In order to examine the flavor and preference of the composition for solid fuel according to the present invention, a sensory test was performed on a total of 20 subjects, 20 subjects each of which was male and 20 female.

Specifically, the solid fuel composition prepared in Example 1 was placed in an oven and ignited. Then, a grill was placed on the solid fuel composition, and a meat having a thickness of about 1 cm was placed on the grill and baked. Then, subjects were asked to evaluate the flavors and preferences after having tasted the grilled meat.

The flavor score was evaluated using the 5-point scale method (5 points: very good, 4 points: good, 3 points: normal, 2 points: poor, 1 point: very poor). In the preference test, commercial activated carbon solid fuel (product of HOSAN INDUSTRIAL CO., LTD.) Was used as a comparative fuel.

As a result of the flavor evaluation, 3 of the 20 subjects were rated as excellent (5 points), 9 were good (4 points), and 8 were evaluated as normal (3 points). In addition, as a result of the preference test, 17 of 20 subjects, when meat was cooked using the composition for solid fuel of the present invention, the natural smoke flavor specific to the rice husk liquid was sold on the market, The meat taste was much better than when the meat was cooked.

The composition for a solid fuel according to the present invention does not generate smoke during combustion and has a long combustion time. When the meat is cooked using the solid fuel composition of the present invention, the natural smoke smell unique to the rice husk The scent of the bare glows lightly in the mouth and is excellent in flavor and preference. In addition, since the composition for solid fuel of the present invention is mainly composed of waste activated carbon, it is not only economical because it is low in manufacturing cost, but also has an environmental friendly advantage in terms of waste treatment. It is worthy of industrial use because it exerts excellent combustion performance.

Claims

35 to 45% by weight of waste activated carbon in which chaff husk liquid and natural tar are adsorbed, 45 to 55% by weight of chaff charcoal, and 5 to 15% by weight of sawdust.

(a) mixing 35 to 45% by weight of activated charcoal with activated charcoal powder and natural tar, 45 to 55% by weight of chaff charcoal, and 5 to 15% by weight of sawdust, and extruding at 100 to 120 ° C; And
(b) cutting the extrudate with pellets. The method of producing a solid fuel composition according to claim 1,

The method as claimed in claim 2, wherein the activated carbon in step (a) is activated by adding activated carbon to the rice husk liquor, stirring the mixture at 70 to 80 ° C, compressing and filtering the mixture with a pressure filter, By weight based on the total weight of the solid fuel composition.