KR890002833B1 - A process for the producing solid fuel - Google Patents

Abstract

The solid fuel is prepd. by heat-compressive molding. The fuel consisting of (1) an upper ignition layer composed of sawdust 100 wt. parts, barium acetate 20-50 wt. parts, potassium acetate 0-10 wt. parts, and paraffin wax 1-2 wt. parts, and (2) fuel main body:composed of sawdust 100 wt. parts, potassium permanganate 0.005- 5 wt. parts, potassium dichromate 0.005-5 wt. parts, potassium acetate 0.05-5 parts, zeolite 0.02-5 wt. parts and paraffin wax 0.1-5 wt. parts.

Description

Solid Fuel Production Method

The present invention relates to a solid fuel having sawdust as a main raw material, in particular, a solid fuel in the form of a complex coal or a bassek charcoal obtained by solidifying dry sawdust.

Most conventional solid fuels are mixed with anthracite coal, charcoal powder, sawdust charcoal chaff charcoal alone or in an appropriate ratio, and by adding additives such as ignition agent and auxiliaries, it is easy to ignite and increase the heat of solid fuel or burn time. Attempts have been made for a long time, and the conventional ignition coal has been popularized for fire extinguishing. Generally, the raw material is press-molded sawdust charcoal and other charcoal powder using an adhesive binder. What used as a ignition layer what mix | blended a large amount of soda (aka cornerstone) has been used. However, when the conventional solid raw materials and the ignition coal ignited, a large amount of toxic gas is generated, and the coal itself has hygroscopicity, which causes long-term storage problems and quality problems.

The compact fuel or complex coal of the present invention dries the sawdust obtained during wood processing, whereas the conventional complex coal or compact coal is manufactured by using one or a combination of powdered and various peppers, or by mixing a ignition agent. The water content is 3 to 10%, preferably 5 to 7%, and the main material is baririum acetate as a softener, an ignition agent, and paraffin wax as a potassium acetate pill, and the body part is potassium permanganate, Potassium dichromate, potassium acetate, zeolite, paraffin wax are mixed and press-molded using a softener and a lubricant to produce a garage or small fuel. In other words, in the present invention, the sawdust of the composite material is dried by a turn-on drying method (150 ° C maximum temperature in a furnace) or other drying device, and dried until the moisture content is 3 to 15%, preferably about 6%, and solid fuel or ignition coal. The ignition layer is composed of an ignition layer and a tubular portion from the top of 20 to 50 parts by weight, preferably 24 to 30 parts by weight, potassium to 10 parts by weight, and preferably 4 to 5 parts by weight of bariacetic acid per 100 parts by weight of dry sawdust. 1 part by weight and 1 part by weight of paraffin wax are added and mixed, and the body part is 0.005 to 5 parts by weight of potassium permanganate, preferably 0.01 to 0.02 parts by weight, and 0.005 to 5 parts by weight of potassium dichromate, preferably 0.01 to 1 part by weight of dry sawdust. 0.02 parts by weight, potassium acetate 0.05-5 parts by weight preferably 1 part by weight, zeolite 0.2-5 parts by weight preferably 0.5 parts by weight, paraffin wax 0.1-5 parts by weight preferably 0.5 parts by weight By mixing and preheating it to 60 to 150 ° C. to pressurize the molding machine while maintaining the temperature of the molding machine at 140 to 220 ° C., preferably 160 to 180 ° C. (at this time, the temperature of the molding machine is maintained by using heat transfer or heat medium oil). Mold. At this time, a water-repellent coating is formed on the outer shell of the molded article (product) by rosin and paraffin wax eluted from sawdust by heating and pressurization. At the time of molding, the composition ratio of the ignition layer and the body portion is prepared in a ratio of 5 to 20:80 to 95, preferably 10:90.

In addition, if the moisture content of sawdust is high, water vapor is generated during molding, which leads to poor adhesion, and molding is not good. Paraffin wax plays a role of a combustion aid to prevent sawdust from sticking to the machine during molding and plays a role of combustion aid and cleans the appearance. It forms an outer skin with rosin etc. invaded from sawdust itself to block external moisture and forms a moisture proof layer for long term storage.

The solid fuel prepared as described above does not want to ignite during molding because the ignition agent of the ignition layer uses barium acetate (decomposed at 585 ° C.) which is decomposed and flammable at high temperatures, and potassium acetate is used in small amounts. Potassium permanganate in the fuselage decomposes at 240 ° C and generates oxygen to burn actively. Potassium dichromate and potassium acetate are used as a supporting agent. Zeolite is porous and supplies oxygen to the fuselage and has a deodorizing effect.

The solid fuel of the present invention is excellent in the ignition power of the ignition layer, the sawdust of the fuselage of the fuselage of the fuselage is charcoal, the durability is excellent as a ignition coal or solid fuel.

Example 1

The sawdust is heated and dried by means of a turnnel ribbon mixing dryer to achieve a moisture content of about 6%. While maintaining this at about 60 ℃ to form the next composition (Table 1) to maintain a temperature of 160 to 180 ℃ by pressing the ignition layer (upper layer) of about 3mm body part to 27mm.

TABLE 1

The ignition coal of the present invention manufactured as described above was ignited with a match fire, and it was ignited quickly and easily, the combustion to the fuselage in the ignition layer was connected, and active combustion was carried out without generation of odorous harmful gas, and conventional briquettes Ignition connection to was good.

Example 2

As a result of preparing and experimenting with the composition shown in Table 2, the same results as in Example 1 were obtained.

In the conventional ignition coal, when the ignition layer is manufactured by using 30 parts by weight of cakal acetate, graphite, dark red flames, and odor are generated. However, in the present invention, explosive combustion is suppressed by using sawdust and paraffin wax together. While acting as a flame retardant, it could be seen that the combustion without chemical pollution.

TABLE 2

Solid fuel of the present invention as described above can be used for leisure fuel, ignition embers, charcoal bar, solid fuel only manufactured without ignition layer can be used as a substitute for charcoal briquettes and charcoal. If the combustion space is controlled at the start of combustion, severe white smoke is accompanied, and when the candles are turned off, a similar smell can be used as a gas detector to find a place where briquette gas leaks when used for ignition of home briquettes.

Claims (3)

Using the dry sawdust and additives, the upper ignition layer is formed as 20 to 50 parts by weight of barium acetate, 0 to 10 parts by weight of potassium acetate and 1 to 2 parts by weight of paraffin wax per 100 parts by weight of dry sawdust, and the fuel fuselage part is 100 parts by weight of dry sawdust. It is prepared by heating and compression molding the composition mixture by adding 0.005 to 5 parts by weight of potassium permanganate, 0.005 to 5 parts by weight of potassium dichromate, 0.05 to 5 parts by weight of potassium acetate, and 0.1 to 5 parts by weight of zeolite 0.02 to 5 parts by weight of paraffin wax. Method for producing small fuel or ignition coal. According to claim 1, wherein the composition ratio of each layer is composed of 10% of the ignition layer to 90% of the fuselage part, and the composition of the ignition layer is 20 to 40 parts by weight of potassium acetate and 2 to 5 parts by weight of paraffin wax with respect to 100 parts by weight of dried sawdust. And the fuselage part is made of 1 to 5 parts by weight of parapic wax. The method according to claim 1, wherein the moisture content of the dry sawdust is 6% or less and the mold saw mold temperature is 140-220 ° C. while maintaining the sawdust temperature at 150- ° C. in the previous step. Method for producing small fuel or complex coal to form and adhere.