DE564870C - Process and device for the uninterrupted generation of water gas from fine-grained, powdery or dusty fuels - Google Patents

Description

Method and device for the uninterrupted production of water gas from fine-grained, powdery or dusty fuels The technical production of water gas is known to be carried out in two successive stages, unless external heating is used. The latter method of working could so far not very efficient due to a lack of sufficiently heat-permeable and stable building materials be formed. Also the already proposed one-time heating of the material to be gasified by blowing up or external heating in an upstream water gas generator Shaft brings only a very small amount of heat into the heat-consuming water gas process, which only accounts for a fraction of the heat requirement. Trying the heat of reaction the superheated steam and also added foreign gases that act as heat transfer media serve, incorporate, has not yet led to practical success and continues also advance large superheater systems. Have the measures of blowing and gassing as a prerequisite: a) mechanical reversal, i.e. wear and tear and operation; b) Generation of a still quite large amount of high-quality bubble gases; c) mixing and Pollution of the gases of one. and the other section. You want a lot Blowing air in order to get to carbon dioxide as much as possible and less to carbon dioxide, so fails the procedure if you don't want to use a tapping generator, what lignite and fine-grain fuels have so far been unsuccessful.

For fine-grain fuels, only the generator came through so far coal moved by the wind for large-scale utilization. He works in two stages, Bubbles and gases and gives an undesirably large amount of high-temperature bubble gases.

These disadvantages are with the subject matter of the present invention non-existent, the continuous processing of fine-grained or powdered Coal permitted.

The essence of the invention is that the hot-blown carbonaceous Fine material in a special gassing container equipped with locking devices is introduced, through which steam constantly flows, so that the latter on the hot-blown Good when passing through the gassing tank acts with formation of water gas and simultaneous cooling of the goods, which are then returned to the hot-blowing room will.

The invention is referred to by the following exemplary embodiment Explained on the attached schematic drawing: In a room a is coke or Coal heated up by blowing; through the closure b the material to be annealed is in one Intermediate container c and further through a closure d into the gas chamber f transferred, which it traverses (falling freely or sliding over internals), where it constantly comes into contact with the steam entering at g. The formed (water) Gas exits at the opposite end of container f at 1a; that treated and Cooled goods are left out (below g) at e and hot-blown again in brought back the room d.

Depending on the type of item to be treated, it can be done in a known manner be blown hot on a grate (Fig. i) or by the wind (Fig. 2) in a. In the former Trap, the discharge opening i for the ashes will be arranged below the grate, in the second case, if the ashes fly together with the flue gases during hot blowing, you get them through the flue gas outlet adjoining the hot-blowing room a on the left pull off. If the ashes have a tendency to lie more solidly, they will become after Weir k blown away. The ash then collects above this weir at the outlet i on -and is burned out here under the influence of the air that is initially slowly blown in and then withdrawn.

Of course, the method that is the subject of the invention forms, also with other facilities than described in the example above, are executed.

The advantages offered by the present process consist of a) uninterrupted work, b) the possibility of generating C02-rich and low-CO blown gases, c) the usability of queasy and dusty fuels, d) the avoidance of contamination of the Water gas by blowing gas, e) in the mobility with respect to the reaction temperature and course of the reaction, which, depending on the temperature of the fuel entering c , delivers CO or CO-rich water gas, f) in the continuous heating of practically all fuel, which is in advantageous contrast to Operation with a stationary fuel bed, in which you have the choice between thorough annealing of the entire bed with CO-rich blown gases or only heating in layers with CO2-rich blown gases, but with a small amount of water gas per period.

Claims (2)

PATENT CLAIMS: i. Process for the continuous generation of water gas from fine-grained, powdery or dusty carbonaceous material, characterized in that the goods previously heated up by blowing are constantly and controllably in and through one special gassing space through which steam flows, from which there is next formation discharged cooled by water gas and reintroduced into the hot-blowing room will. 2. Device for carrying out the method according to claim i, consisting of a blow chamber (a) which can be closed by known means (b), an intermediate container (c) and a gas chamber (f) which is separated from the latter by closure (d) and which is connected to the inlet (g) for steam and with an outlet (1a) for the blowing gas, furthermore with an emptying opening (e) for the treated material.