SU38125A1 - Furnace for producing cyanide compounds - Google Patents

Description

For the purpose of producing cyanic compounds using the synthetic method of fixing nitrogen in the air without using nickel-chromium-nickel steel, ordinary iron or cast-iron pipes are used in the proposed furnace, and the space between them and the walls of the muffles in which they are inserted is filled with coal to protect the pipes oxidation by air entering the muffle.

There is an opening in the chamber, through which the coal that burns in the muffle is refilled.

In FIG. 1 shows a vertical section through a furnace according to EF in FIG. 2, representing the furnace cut-out according to AB in FIG. one; FIG. 3 - horizontal section of the furnace.

The furnace consists of two or more muffles p, 1 made of shaped refractory bricks and tubes installed in them or retorts 2, 2 made of ordinary iron or cast iron. The muffle 1, 1 is heated by burning in the furnace 3 fuel, which can be solid, liquid and gaseous. Combustion products enter the short-circuit furnaces in the fire chamber 4 to completely burn them, heat up the swaps 5 muffles and descend down through channels 6, heating the wall of L5 duffles; of

(47)

Channels 6 gases through the hole 7 enter the space 8, where they heat under 9 muffles and enter through the channels 10 into the chimneys I, and from them go to the chimney.

Iron or cast iron pipes 2, 2 can be oxidized by air oxygen, which is partially present in the combustion products of fuel and inevitably, although in small quantities, sucked through the gaps in the masonry of the furnace, muffles and gas combustion chambers, and therefore to protect the pipes 2, 2 from burning insulated with fine charcoal or coke, which fills the entire empty space between pipes and walls of muffles.

Since or partial air ingress into the muffle will cause charcoal or coke to burn, it has to be replenished from time to time through the charging opening 12.

Upon reaching a temperature of 1000-1050 ° in pipes 2, 2, they are loaded with briquettes or a powdery mixture consisting of 113 mixtures of potash or soda, scale, and charcoal; after loading, pipes 2, 2 are hermetically closed with iron lids, to which are attached pipes 13, 13 and 14, 14 .....

The nitrogen required for fixation is supplied under a certain pressure through iron pipes 13, 13 Pressure

nitrogen is regulated by a manometer.

For removal of water vapor released at the first moment after loading tubes 2, 2, and volatile gaseous substances, iron tubes 14, 14 serve as exits from which everything enters the receiver 15 closed by the door 17, and from the receiver to the atmosphere through the exhaust pipe 16.

At the end of the reaction, the contents of the tubes 2, 2 with iron strokes are discharged into the iron drums 18, which are then hermetically closed and in which the mass remains until complete cooling in a nitrogen atmosphere. The evolved different gases during discharge are discharged to the exhaust pipe 16. The required nitrogen is supplied to the drums through pipe 19.

After cooling, the product goes either directly into use or to the processing of yellow salts in a well-known way.

The subject matter of the invention.

Claims (2)

1. Furnace for producing cyanic compounds, consisting of 4 muffles 1 installed in the fire chamber and the reaction tubes or retorts 2 inserted in them, characterized in that the said pipes or retorts are made of ordinary iron or cast iron and them from rapid oxidation during the reaction by the action of penetrating air into the muffle, covered with a protective layer of charcoal or coke. 2. The use in the furnace of claim 1 of muffles 1, made in the form of closed chambers heated on all sides, characterized in that inside the chambers, between their walls and reaction tubes, there is a free cavity that serves to fill the protective layer of coal, to refill the same the latter, as it is burned, provides a hole 12. , / g Т ШШ ::; ::: :: l1 / - v; :: 4 -j,, || J- A:.: -, .- ,, -...., -, ...--. 1 / 3f J ii.vyJs-: -t -, - T. 7 i --.- tt: -g- ------ P- / (3 h (.-- i. i .j E -zr: v.vj-s.ii, i --- 3; , 3 {,,. .L --ij SHSHT I -, t J4- E |,.,