SU915939A1 - High-temperature heater - Google Patents

Description

The invention relates to heating devices and can be used in the laboratory practice of the fuel industry to determine the ash content of mined, especially peat, as well as coal, shale, CHP to monitor the quality of incoming to the burning of peat, coal, in agriculture in the production of peat-mineral ammonia fertilizers , heat-insulating plates and in the briquette production.

Electric heaters are used that are used in muffle furnaces in which the solid fuels under study, such as peat, are burned to determine their ash, which is one of the most important quality indicators for fuel in O.T.

However, such heaters develop a temperature of not more than 1000 * C, require a large amount of electricity ·

2

gey (ashing is 4-5 hours) and not applicable in the field.

Also known is a high-temperature heater containing a vertical ¹ cylindrical body, a chill mold, and

⁵ placed in the body of the crucibles [2].

The disadvantages of the known heater are impossibility of simultaneous ashing several peat test portions, and therefore, small pro ¹⁰ voditelnost definitions small time calcination ash because of the high heat of the crucible, because it its upper part is on the air, not the complete NEO * ⁵ peat Leniye due insufficient amount of oxygen in the zone of maximum heat.

The purpose of the invention is to increase productivity and improve the process.

²⁰ ashing.

This goal is achieved by the fact that the heater is equipped with a thermite shell, installed on the case,

915939

four

θ which is placed in the chill, and in the case around the circumference are made chambers, c. which are located crucibles.

Moreover, additional chambers for the oxidizer were made in crucibles.

FIG. 1 shows the proposed heater, general view, longitudinal section; in fig. 2 - section aa on »fi 1.

The high-temperature heater contains a vertical cylindrical body 1, a cover 2, a metal mold 3 with a base 4. In the recesses of the body 1 around the circumference are placed crucibles 5 with hinges of peat 6. At the bottom of the crucible 5 there are holes covered with plates 7 on top of it chambers 8, in which crucibles 5 are located, to the lower part of which additional chambers 9 are mounted. In which solid oxidizer 10 is placed, for example, on the basis of potassium chlorate.

The heater is placed in a special chamber 11.

The heater works as follows.

Crucibles 5 with oxidant 10 and peat 6 weights are placed in case 1, which is closed from above by base 4, chill 3 and thermite lid 2 In this assembled state, the heater is placed in chamber 11 and ignited with a thermite match. During the burning of thermite, a thermal shock of high thermal power develops, as a result of which peat 6 weights burn. At the same time, under the influence of high temperature, the oxidizer 10 decomposes with oxygen, which through the holes in the bottom of the crucible 5, squeezing the plate 7 "into the burning zone of peat 6 and greatly intensifies the process of its burning and deep calcination. Flue gases through the hole in the chill 3 are released into the atmosphere. After the burning of termite, the cover 2 is removed from the body 1, then the crucibles 5 are removed and the desired ash content of the peat is calculated by a known technique. At the same time chill mold 3. base 4 and crucibles 5 isto

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thirty

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used repeatedly and made of temperature resistant materials.

The use of the proposed heater by 2.5 “3> 0 times improves the performance of ash content determinations compared to the known one, due to the fact that several batches of fuel are analyzed simultaneously. In addition, the reliability of the determinations increases significantly, since in the proposed heater, the process of burning and calcining organic matter is intensified by oxygen entering the combustion zone as a result of decomposition of the oxidizer under high temperature.

Compared with the existing method of determining the ash content of peat in peat-based research practice by burning in a muffle furnace (GOST-11306-65), the proposed heater simplifies and reduces the peat analysis for ash by 15 ~ 20 times, makes it possible to perform it in the field, provides significant savings electricity.

Claims (2)

Claim 1. A high-temperature heater for ashing solid fuel, containing a vertical cylindrical body, a chill mold and crucibles housed in a case, characterized in that, in order to increase productivity and improve the ashing process, it is equipped with a thermite lid mounted on the case in which the chill mold is placed, and in the housing around the circumference there are chambers in which the crucibles are located. 2. The heater according to claim. ^ Characterized in that additional chambers for the oxidizer are made in the crucibles.