SU96191A1 - Burning stove - Google Patents

Description

The burning furnace is known. According to the co-operation, the cygle shaft furnaces are constructed either as a single vertical shaft without separate devices for the combustion of fuel, or as a shaft with a pristine shaft, so-called front burners. Pec Be :; special fireboxes are built in the VOL, case “. firing in They are designed for short, variable fuel. (; anthracite, coke, and; etc.); a-second) is built in if it is planned; for use, long-flame toniso: (firewood, peat, heat and shale, long coals, and coals, etc.). In case of: korlamennye fuels firing products in. the shaft furnace is not small - inold; in this way: the name of the peresyshumu chu is special, and sometimes by the method of black briquette — the first method is usually applied: during firing izvesBI, with, -. zagru.ak. mine goes interspersed with limestone and limestone fuel. The method of "black briquette is usually applied when firing in cement kilns in cement kilns, semi-h.a. from briquettes, formed from a moistened fine mixture of raw material and fuel.

In furnaces with single remote furnaces, the mine is loaded with only one raw material, and the fuel is burned — in separate furnaces I, fused day-time gases with the required temperature are supplied to the mine.

Significantly less often, pr-also called shaft furnaces with gas; 7, heating, and burning either natural gas, or ga.e, obtained in specially constructed gas generators.

For firing in shaft furnaces, as a rule, they are used: syr: graze: e, materiali-davolno large pieces. For example; during firing from pc-stew consumed; Limestone pieces are sized from 80 mm to 200 mm in. across. Pieces, however, smaller than 80 mm, in order to avoid difficulties with traction and p., A drastic decrease in furnace productivity, are not used and go to the dump. This “trifle has to be thrown away, a waste in the amount of up to 30% IDT of the entire mining of minerals.

AO 96191 2 -

The furnaces mentioned above have the following main disadvantages;

1. Shaft furnaces in which fuel burns inside the mine itself can only work on expensive defi cial; short short-fuel types of fuel, and in these furnaces it is impossible to obtain frequent products without admixture of ash from the fuel;

2. Furnaces with external fireboxes can run on long-bladed fuel with fuel for fuel, and clean products are obtained at the same time (ash is produced from the ash mixture, but these road furnaces have a low coef: 1) due to large heat losses in amh TciiKa: thus: -: s: Rgzan so tnitsl;: ü; mi expenses, when you require special service personnel who worked as a slave ;; thrash; t:; :) 1x us.chpi x;

3- received fuel waste, sometimes very chained, only: a significant amount of heat is carried away with its own fuel, and it loses its prices; n-ie properties after removing them from the t-bag.

For example, when burning combustible shale in fireboxes, the resulting ash is discharged from ToniOK, usually still a burning torch. It is not possible to store ashes in such a warehouse in any warehouse and always place it under the open sky. When ash is stored in the dumps, the upper layers under the influence of atmospheric precipitates:, it forms a hardened crust, under the cover of which the rest of the ash remains in a hot or very hot state for many years. Thus, the remote combustion furnaces not only lose a lot of heat with the ash, but the ash itself deteriorates and remains in a highly heated state and processing it without any special equipment; the artificial cooling oro makes it difficult. The proposed kiln is made in the form of two plates connected by a gas duct into one calcining thermal unit.

The method of producing non-ment and lime in this kiln consists of (that lump raw material and fuel are loaded into the first shaft, and one raw material into the second shaft, and in the first shaft, as a result of fuel combustion, from a mixture of burnt lime and ash Cement and a mixture of high temperature gas gases are obtained, which are discharged through the gas outlet and escape windows to the second shaft, where it burns at a temperature and the limestone, marl, and other material necessary for roasting.

FIG. 1 schematically shows a vertical section of the furnace; in fig. 2nd cross-section.

The proposed kiln is composed of a shaft 2, connected by a vertical flue 5, a dispensing ring 6 and flying out of windows 7 with a shaft 4.

Mine 2 is loaded through a charging device} with briquettes or lumpy raw material and fuel, and mine 4 is loaded with one raw material through opening 9. Unloading of the calcined product from the mines takes place through openings 8, p. Located on both sides of the furnace. The furnace is monitored through the chapters 3. Air is supplied to the furnace by a fan through ducts 10.

During the construction of an industrial kiln, the latter should be equipped with automatic loading and unloading mechanisms. Mechanisms can be taken dry (which are equipped with modern, known automatic shaft furnaces.

 As an example, the following is a description of the proposed kiln in relation to the burning of a single type of raw material (izestnka) and one type of fuel (combustible slate). The shaft 2 is loaded alternately with layers of limestone and slate, and the shaft 4 is loaded only with limestone. In the first shaft, as a result of shale combustion, a mixture of burnt ash and shale ash and high temperature gases is obtained. Gases consist of iiS volatile 110grubber to l; products of incomplete and complete combustion are discharged through vertical flue 5 and exhaust windows to the mine 4- In this mine, volcanic gas is burned; the temperature in uiaxTe 4 rises to t &temperature,; 1 is required for lime calcining.

By zones, the roasting process from the furnace proceeds as follows.

In mine 2, at the top, there is a zone in which a hologrezis of loading of materials occurs and the removal of a significant part of volatile combustible materials from shale. In the middle of the mine, kzedium is sbig due to the heat obtained from the burning of the remaining combustible part 1 of slate. In the same zone, depending on the heat mode) Hebot's side, the combustion of the combustible part of the fuel can proceed with L1block1 with the desired full combustion, as a result of which it is possible to obtain a gas mixture of one or another calorific value; lime and slain; , its ash and in a heated state enters the burning zone.

In mine 4, three zones are also formed, but the nature of the operation of the vertical and middle zones of frost. In the upper zone, preparation takes place known. How to cool waste fumes. In medium ash, limestone is ignited due to heat from hot gas c: ecll and combustion of combustible gases in mine 4, where the gas mixture comes from mine 2- Air for the next: the play of combustible gases enters through the lower zone, where it cools the burned the lime is heated by itself before entering the burning zone.

Thus, in the proposed furnace, as much as possible, not only is the heat from the combustion of the combustible part of the fuel, but also the heat of exhaust gases and the heat of cooling in the furnace of shale ash and lime. In addition, the cooled ash can be immediately combined with the lime into the warehouse, and then for grinding without any additional artificial cooling and without deterioration of its binding properties.

The kiln can work on limestone in large pieces and on small things (from 80 to 20 mm) In the proposed kiln, other products can be obtained, depending on the type of raw material used (gypsum, chamotte, etc.), method of burning (silicate cement according to the method of black briquette), etc.

The kiln can operate on a wide variety of fuels, while ensuring full and effective use of both the organic and mineral parts of it; in the furnace, it is possible to burn the most p-azpe-like types of raw materials in large and small forms, to simultaneously obtain different types of products, to reach, if desired, different temperatures in the mines, and so on.

Subject invention

Claims (2)

1. A burning furnace, characterized in that it is made in the form of two mines connected by a gas duct into one calcining thermal unit. 3№ 96191 2. The method of producing cement and izdeve-tn: in the Iech of claim 1, characterized in that I load the first shaft, the raw material and the fuel, and in the second part the raw material, the irish in the first mine, As a result of burning fuel, cement and cement gases are produced from a mixture of burnt lime and ash, which is drained at a high temperature through the flue duct and out of the openings to the second mine, where it burns at the temperature required for residential, limestone, marl m-a-teriala-.