DE31C - Combustion system - Google Patents

Description

1877.

Class 24.

G. AUG. FRIEDR. LIEGEL in STRALSUND. Combustion system.

I'iUontirt in the German Empire on July 6, 1877 al).

This firing system is particularly suitable for commercial firing with continuous (Day and night) operation. It can be used for all types of glow fires (gas stoves, Melting ovens, tail ovens, etc.), as well as for evaporation purposes (steam kettles, boiling pans etc.) Hard coal, coke or tar are used as fuel. The former two substances must be slagging.

The drawings represent gas stoves with coke and those with tar heating, as well as steam boiler heaters represent.

1. Gas stoves in general (sheet 1).
Gas ovens from 1 up to and including 11 retorts, with

ι Retort increasing in number, under one Vault and over a fire, which lies in the middle of the stove.

2. Gas ovens with coke heating (sheets 2 and 3 and the arrangement of the retorts, sheet 1).

An oven with 8 retorts was chosen for the special construction. The retorts are in 3 vertical rows one above the other. They extend right through the furnace up to the length of a brick. Under the retorts there is the combustion chamber α b, the lower half α of which is the space for receiving the coke (generator), the upper half b of which is the space for the combustion of the carbon dioxide formed to form carbonic acid (regenerator). The firebox, consistently form of steps built from small stones, expands gradually from top to bottom to approximately _^3/4 of its entire height; in the last quarter, however, it contracts quickly and ends in a long, narrow horizontal slit c. The (primary) air required to burn the coke to carbon dioxide is drawn in through this firing slot c. The carbon dioxide formed is burned to carbonic acid by fresh (secondary) air flowing in above the burning layer, which is drawn in through the inlet holes d , along the channels e and discharges through the holes / into the regeneration chamber. This air is regulated by the adjusting slide g. The heating gases leave the furnace through the front and rear passages and move into the smoke duct //. The fire is fed from the corridor of the retort house. The cup frame / with water inlet and lid is used for this. The coke and slag falling through the slit, as well as the ashes, reach the auxiliary grate k, where the former burn themselves, the latter are torn into the ash pan with a poker, and the latter falls through the cracks in the grate into this box. Left and right of the grate are two fixtures m, which are firmly connected to the side walls and leave a space η open between them and these walls, through which air draws laterally upwards and into the slot. The middle retort, initially exposed to the fire, rests on a closed base "o, consisting of plates which are carried by the arches /.

3. Gas ovens with tar heating (sheets 4, 5 and 6).

A box α made of wood or sheet metal, standing on an underframe b , is held full of tar. In the box there is a steam coil c for preheating the tar. In one corner, a triangular space is separated by a sieve d. In this room there is a smaller steam coil e with a lot of turns to heat the tar more intensely.

The tar is drained through a wide pipe /, which is attached to the latter just above the bottom of the box, bends upwards and ends at the top in a drainage channel. A stopcock g allows the pipe to be removed. The tar flows out of the tube / into the funnel // to which the tube i leading to the furnace is attached.

The confluence of this latter pipe is protected by the hydraulic closure k against foreign bodies falling into it by chance. The tar flows through the hole e into the combustion chamber m and hits the bottom n, where it forms a foamy, coke-like mass (the coke) in its further combustion. From this Theerkoks the bank i> is fully drawn from time to time by means of a hook. The air used for combustion pulls through a long and narrow opening in the door ρ over the coke on the bench, burns it and, in a highly heated state, got into the actual combustion chamber.

Here she meets the down-falling, evaporated by the radiant heat of the surrounding walls Theerstrahl, mixes with the Theerdämpfen and burns the same in space m completely; so that no smoke escapes from the chimney, the combustion is really a completely smoke-free. The regulation of the incoming air is done by a slider q, tightly machined on its seat, which is to be set by screws and is located on the door p .

Patent Claims: i. the grouping of 9, 10 and 11 retorts in an oven and above a fire.

2. The shape of the generator, which consists of a funnel, is stepped, with the exclusion of the straight walls and ends roughly in a long narrow slit, which is the place of the Represents rust, thereby eliminating the rust and causing the incoming air to go where it is also likes to turn, only comes into contact with the fuel, but not on smooth walls can pull up.

-3, The auxiliary grate, = on which ^ those falling through burning small pieces of fuel, as well as the slag flowing out, fall. The small auxiliary fire formed in this way serves to remove the slag, if it is not very fluid, to prevent solidification in the slot and to cause it to flow away automatically.

4. The lateral drafts, which are to the left and right of the grate. Pull through this cooling air currents up the sides of the slotted stones, into the slot and prevent the said stones from melting off.

5. The tar-firing in the arrangement described, in which the great distance a perfect combustion between the hearth and the object to be heated which enables tar vapors before the heat is used; the long bench between the entrance opening the air and the hearth. This bank is burned with the residues of the Theers kept filled and enables a strong preheating of the incoming combustion air.

In addition 7 sheets of drawings.