DE471329C - Gas generator for producing water gas from pulverized coal and water vapor - Google Patents

Description

Gas generator for producing water gas from pulverized coal and water vapor There are devices for the production of water gas from pulverized coal and water vapor suggested in which in highly heated, with the ability of heat absorption and release provided rooms brought together the likewise highly heated gas formers to generate water gas. Provide the heat for this endothermic process the stone masses of the rooms. The proposed facilities now include special, connected to one another by lines and can be shut off from one another by slides Rooms for gas generation and heating of the - steam or combustion air intended. According to another proposal, a heating of water gas should also be used Carriers for the coal dust are made separately.

All of these proposals result in bulky designs with heat radiating Cables.

The invention dispenses with the preheating of the combustion air, since this is superfluous after our own attempts.

It is characterized by the heating of the carrier for the The gas used for coal and the water vapor in one divided by a partition Room, whereby the partition wall extends until the heating of the separately preheated Gasifying agent has reached such a temperature that when they come together at the end of the partition in the hottest, no longer subdivided part of the room, which the continuation of the subdivided forms, ensures a good concentration of the gas phase will.

The exit for the newly formed and that as a carrier for the coal dust water gas used is in the hottest non-partitioned end of the room, the-separate access for the lifting gas and the water vapor in the colder, through the Partition partitioned end of the room.

The system also sees the connection of two or more of these Prevent at its hottest end through a non-closable channel through which part of the gas generated during gas formation from one space to the other is led to the combustion and heating of the same, while the rest of the generated Gas flows with the carrier gas into the utility line, the sensible heat expedient can be exploited.

The connecting channel is expediently designed as a dust separator.

The invention allows the restriction of the rooms and the shut-off devices to a minimum. All shut-off devices work at a low temperature.

When heating up, the one located near the mouth of the canal decreases Part of the room the highest temperature at, so that until the beginning the partition wall a certain cooling of the heating gases takes place and the walls this part of the room are heated accordingly lower. This has the consequence that the gas formation begins after the changeover at a sufficient temperature, but the gas phase does not suffer any cooling until it enters the channel, since the Wall temperature increases from the end of the partition to the duct. This will reached a good concentration by the end of the reaction.

The union of. separately heated gas formers at a sufficiently high The reaction temperature takes place with vigorous mixing. This can go through suitable shape of the walls at the mixing point are reinforced.

Instead of the coal dust, liquid fuels can also be gasified.

The drawing shows an embodiment of the invention in schematic form Depiction. All parts that are irrelevant to the invention are omitted.

i and 2 are chambers, which through openings 3 and 4 and the schematic channel s drawn as a dust separator are connected to one another. Chambers i, 2 are, as shown, in the lower part for the separate heating of steam and coal dust.

For the heat input or output, it is not advisable to use lattice stones, but rather the smooth channels that are usual for pulverized coal firing, which are used in sufficient width of the dust particles carried along by the combustion gases Give the opportunity to deposit. The channels are not particularly shown.

In the position shown, the steam is at 6, furthermore the mixture of water gas and coal dust introduced at 7 into the lower part of chamber i and overheated when ascending. The conversion to water gas takes place as a result of high chemical tension between steam and coal at this temperature. The mixture can be further increased by a suitable shape of the canal mouth. The means for this are from burning dust with air; well known so that their presentation is superfluous. The upper part of the chamber i is heated even higher than the lower divided, so that by the heat transfer of the upper glowing Walls a cooling of the converting gasification agent by endothermic reaction prevented and a good gas composition is guaranteed. The formed water gas including the small amount used to carry the coal dust through the opening 3 in the dust separator 5, in which most of the entrained Ash particles settle in the sack 8. The means for removing the dust are also known and not shown. The dust separation can be done by the known means are pushed as far as desired; the representation and description this means is unnecessary.

In the dust separator or channel s, the water gas divides into two parts. One part is through the line 9 to the outside, making use of it inherent sensible heat derived according to the known method, completely cleaned and led into the utility line. The amount of water gas used to carry the coal dust can be fed back in the circuit to the conveyor fan, but also elsewhere can be taken from the utility line. The lifting gas is used in this cycle because of its small amount not as a heat transfer medium for the water gas reaction. For this come after What has been said essentially only takes into account the glowing walls of the chambers.

The other part of the water gas passes through the opening q. for combustion and heating in the chamber z. With io, the combustion air is added. The upper part of the chamber receives the highest temperature, while the combustion gases cool down on the way down through the divided chamber. Operation is carried out in such a way that there is still a sufficiently high temperature at the upper end of the partition to initiate a violent reaction. Ash bags ii are arranged at the lower end of the chamber. The same applies to the removal of the ashes: what has already been said for the sack 8. The cooled combustion gases escape from openings 12, 12 into a fume cupboard, not shown. In certain periods of time, the gas, steam and air flow is switched over in a known manner. The devices for switching are only partially shown; since they are known, they have been omitted from the drawing for the sake of clarity. The operation of the gas generator after the conversion is an exact mirror image of the drawing and therefore does not need to be described again.

Claims (1)

PATENT CLAIMS: i. Gas generator for producing water gas from pulverized coal and water vapor in internally heated ones with the ability to give off heat Rooms, characterized by the subdivision of the rooms by a partition wall, Which extends from the colder part to the hotter one to about the middle. a. Gas generators according to claim i, characterized in that the upper hottest ends of the spaces connected by a channel through which part of the in one or more of the rooms in the heat emission generated water gas in the or the corresponding Spaces for heating the same by burning the gas and from which the The rest of the water gas is diverted in the rectified stream. 3. Gas generator according to claim i and -a, characterized in that the channel acts as a dust separator is trained.