CS252005B1 - Equipment for carbonaceous pressed pieces carbonization in combustible gases medium - Google Patents

Description

SUMMARY OF THE INVENTION The present invention relates to an apparatus for carbonization of carbonaceous compacts in a combustion gas environment which addresses the non-oxidizing environment of a carbonization furnace and the economics of the process.

A known apparatus for carbonizing carbonaceous molds is known, which consists of a carbonization furnace which is heated indirectly by a mixture of flue gases, the space of the carbonization furnace being exposed to air. The outlet of the carbonization furnace is provided with an outlet of carbonization gases into the atmosphere.

It is also known to directly heat the carbonization furnace with a mixture of combustion gases coming from the furnace and the addition of cooling air to achieve the desired gas temperature. The carbonization gases are discharged into the atmosphere without combustion.

A disadvantage of the known apparatus is that the carbonization process takes place under air or restricted air access, which reduces the inertia of the carbonization process and does not utilize the heat of the carbonization gas, which in addition creates undesirable emissions to the environment. The carbonization gas contains a large proportion of flammable organic vapors, mainly tars.

The above-mentioned disadvantages are eliminated by the apparatus for carbonization of carbonaceous products in a combustion gas environment, which consists in that it consists of a rotary carbonization furnace provided on the inlet part with a raw material dispenser and on the outlet part connected to the heating gas mixer for the carbonization furnace. The inlet of the carbonization furnace is connected through a combustion chamber of the carbonization gases to a carbon dioxide gas cooler and through a fan with a cool gas outlet to the mixer, cooler and atmosphere.

The attached figure schematically illustrates an apparatus according to the invention, wherein the rotary carbonization furnace 10 is provided at the inlet with a gas-tight dispenser 11 of fresh moldings and at the outlet with an inert heating gas from the mixer 20. The heating gas consists of a mixture of combustion gases obtained from standard fuel 21 and of the furnace 23, as well as the flue gas removed from the shower cooler 50.

The carbonization furnace 10 is secured against leakage of heating gas at the discharge 12 of the carbonized product. The carbonization gas from the carbonization furnace 10 at the inlet portion is discharged to the combustion chamber 40 via a flame of a stabilizer burner for standard fuel 41. The flue gas after use of heat in the boiler 43 is discharged to the shower cooler 50.

The flue gas from the cooler 50 is discharged for circulation through the three-way cock to the gas mixer 20 and also through the carbonized product cooler 30 to the gas mixer 20. The remainder of the cooled and cleaned flue gases from the cooler 50 is discharged to the atmosphere.

The carbonized product from the carbonized product cooler 30 is discharged through the airtight seal 31 as a carbonization product.

An advantage of the device according to the invention is that the carbonization process takes place in a non-oxidizing gas environment. It ensures good utilization of heat by direct heating of the treated carbonaceous moldings, as well as the utilization of heat in the outgoing carbonization gas, thereby effectively removing pollutants from the gas discharged into the atmosphere. Thus, it benefits in the quality of the process, its economy and the creation of the environment.

Example

The carbonization process of fresh carbonaceous moldings takes place in the absence of air. Their heating is countercurrent to the heating gas. The heating gas temperature (500-700 ° C) is controlled by the amount of waste gas from the process itself.

The amount of heating gas can be used to control the total volume of gases in the carbonization furnace so that, at their minimum volume, no volatile tars are condensed at the inlet of the carbonization furnace.

The movement of the heating gas and the carbonizing gas is ensured by the vacuum generated by the fan downstream of the boiler.

Combustion of the carbonization gas in the flame of a standard fuel at a temperature above 1000 ° C ensures efficient volatilization of volatile organic compounds (even tarry) even with a minimum excess of air oxygen (max. 2%).

The flue gas of the carbonization gas after steam production is cooled and cleaned at the same time, thereby ensuring the purity of the waste gas and also enabling the regulation of the heating gas temperature.

Carbonised product falling out of a carbonization furnace at 500-700 ° C to avoid ignition in the air, is cooled indirectly with water or directly with cold flue gases.

Claims (1)

The apparatus for carbonizing carbonaceous products in a combustion gas environment is characterized in that it consists of a rotary carbonization furnace (10) provided on the inlet part with a green press feeder (11) and on the outlet part connected to the heating gas mixer (20) for the carbonization furnace. (10), such as (a) by draining (12), the carbonized product into the condenser (30), OF THE INVENTION at the outlet of a gas-capped product (31), wherein the inlet of the carbonization furnace (10) is connected via a carbonization gas combustion chamber (40) to a carbonization gas flue gas spray cooler (50) and via a fan (51). 20), cooler (30) and atmosphere.