Method and device for gasification of solid combustible materials under pressure in stationary layer

FIELD: technological processes.

SUBSTANCE: invention relates to a method and a device for gasification of solid combustible materials under pressure in a stationary layer. Method for gasification of solid combustible materials by gasifying agents containing oxygen and water vapour is implemented in a stationary layer in a gas generator of high pressure. Through the head part of the gas generator it is supplied with coarse-grained solid combustible materials and the obtained gas is discharged from it. By means of located on the bottom of the gas generator rotating grate, above which there is a stationary layer bed, performed is a controlled supply of first gasifying agents for non-slugging gasification and through the bottom of the gas generator ash is extracted. In addition to the first gasifying agents supplied with the help of the rotary grate and independently from them through at least one nozzle reaching the upper area of the stationary layer filling second gasifying agents for slugging gasification are blown in, herewith the second gasifying agents are blown in with the vapour-to-oxygen ratio of 0.5–4 kg/m3 and the speeds of gas outlet from 20 to 120 m/sec.

EFFECT: higher efficiency, wider range of application of solid combustible materials.

16 cl, 2 dwg

 



 

Same patents:

FIELD: oil and gas industry.

SUBSTANCE: invention is related to equipment for gasification of granulated solid fuel and it can be used in power generation, gas production and chemistry industries for the purpose of synthetic gas and crude gas production. Gas generator (1) represents a closed reaction vessel containing fluidised bed (4) formed by fuel; feed gate (3) installed in the upper part for continuous fuel delivery under; top gate (17) installed under bell-shaped narrowing of the bottom (14) for ash unloading to ash disposal gate (16); revolving grate (11) built-in over bell-shaped narrowing of the bottom (14) with possibility of gasifying agent delivery from below to fluidised bed unloading of ash through bell-shaped narrowing and adjoining tubular section (15) to ash disposal gate. In the tubular section (15) there is a built-in slide gate (19).

EFFECT: invention allows continuous ash unloading without interruption of the process and negative impact on the process pressure and temperature and continuous running of the revolving grate.

3 cl, 1 dwg

FIELD: oil and gas industry.

SUBSTANCE: invention is related to equipment for gasification of granulated solid fuel and it can be used in power generation, gas production and chemistry industries for the purpose of synthetic gas and crude gas production. Gas generator (1) represents a closed reaction vessel containing fluidised bed (4) formed by fuel; feed gate (3) installed in the upper part for continuous fuel delivery under; top gate (17) installed under bell-shaped narrowing of the bottom (14) for ash unloading to ash disposal gate (16); revolving grate (11) built-in over bell-shaped narrowing of the bottom (14) with possibility of gasifying agent delivery from below to fluidised bed unloading of ash through bell-shaped narrowing and adjoining tubular section (15) to ash disposal gate. In the tubular section (15) there is a built-in slide gate (19).

EFFECT: invention allows continuous ash unloading without interruption of the process and negative impact on the process pressure and temperature and continuous running of the revolving grate.

3 cl, 1 dwg

FIELD: technological processes.

SUBSTANCE: invention relates to a method and a device for gasification of solid combustible materials under pressure in a stationary layer. Method for gasification of solid combustible materials by gasifying agents containing oxygen and water vapour is implemented in a stationary layer in a gas generator of high pressure. Through the head part of the gas generator it is supplied with coarse-grained solid combustible materials and the obtained gas is discharged from it. By means of located on the bottom of the gas generator rotating grate, above which there is a stationary layer bed, performed is a controlled supply of first gasifying agents for non-slugging gasification and through the bottom of the gas generator ash is extracted. In addition to the first gasifying agents supplied with the help of the rotary grate and independently from them through at least one nozzle reaching the upper area of the stationary layer filling second gasifying agents for slugging gasification are blown in, herewith the second gasifying agents are blown in with the vapour-to-oxygen ratio of 0.5–4 kg/m3 and the speeds of gas outlet from 20 to 120 m/sec.

EFFECT: higher efficiency, wider range of application of solid combustible materials.

16 cl, 2 dwg

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