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Coal gasification with additional production of useful materials

A technology of gasification materials and compounds, which is applied in chemical instruments and methods, gasification process, fixed bed gasification, etc., can solve the problems of high capital investment and complex equipment of gasification method, so as to improve economic efficiency and improve usable products and energy, the effect of improving utilization

Inactive Publication Date: 2012-02-22
LP AMINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0067] Gasification requires complex equipment and high capital investment

Method used

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  • Coal gasification with additional production of useful materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0111] 65 parts of finely ground quicklime (average particle size of about 10 microns) and 30 parts of finely ground coke (average particle size of about 50 microns) are closely mixed, and 5 parts of tar are used to form agglomerates to form a diameter of about 20mm pellets. 150 kilograms of coal with an average particle size of approximately 20 mm is introduced into the top of the shaft furnace via an annular lock hopper every hour. Through an additional closed hopper arranged in the center, 140 kg / h pellets were introduced in a way of forming a calcium-rich area in the center of the reactor.

[0112] In the lower area of ​​the reactor, 92Nm is introduced in the center 3 And inject another 5 kg / h of steam in the peripheral area through several annular nozzles. The temperature in the center is about 2,100°C, and it decreases to about 1,600°C toward the edges.

[0113] 240Nm 3 / h of synthesis gas is discharged from the top of the reactor. Take out 15 kg / h of dust in the cyclone s...

Embodiment 2

[0116] 80 parts of anhydrous, finely ground sodium carbonate (average particle size of about 10 microns) and 20 parts of ground petroleum coke (average particle size of 100 microns) are intimately mixed.

[0117] The fluidized bed reactor having 3 cyclones and circulating the solids separated in the first cyclone was set to operate with dry lignite. After reaching an operating temperature of about 1,200°C in the reactor and about 900°C in the first cyclone separator and the circulation pipe, the introduction of the starting product is adjusted so that every 100 kg / h of sodium carbonate is introduced into the reactor The mixture with petroleum coke is about 100 kg / h of dry lignite. In the bottom area of ​​the fluidized bed reactor, 100 cubic meters / hour of oxygen is injected, and another 80 cubic meters / hour is injected at one third of the fluidized bed. The pressure in the reactor is 3 bar.

[0118] After the particles are taken out from the gas discharged from the top of the rea...

Embodiment 3

[0121] 62 parts of finely ground quicklime (average particle size of about 10 microns) and 38 parts of finely ground anthracite (average particle size of about 10 microns) are intimately mixed. The 120 kg / hour of the mixture is gasified together with 150 kg / hour of coal and 95 cubic meters / hour of oxygen in a carrier flow gasifier at a flame temperature of about 2400°C. The gas discharged from the reactor is quenched with circulating syngas cooled to 300°C and passed through a cyclone separator.

[0122] 240Nm 3 / h of synthesis gas is discharged from the top of the reactor. Take out 7 kg / h of dust in the cyclone separator. Take out 90 kg / h of melt from the plug at the bottom of the reactor.

[0123] Each kilogram of cooled melt and water produces 220 liters of acetylene, and every kilogram of dust removed from the cyclone separator produces 260 liters of acetylene.

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Abstract

The present invention relates to a process for the gasification of carbon-containing compounds, characterized in that compounds are added which form carbides under the process conditions. These carbides can be used for the synthesis of useful materials such as for example acetylene.

Description

Technical field [0001] The present invention relates to a method for gasifying carbon-containing gasification materials, which is characterized by adding compounds that form carbides under the conditions of the method. These carbides can be used to synthesize useful materials such as acetylene. Background technique [0002] Carbides of alkali metals and alkaline earth metals and their production methods are known in the prior art (see, for example, Ullmann's Encyclopedia of Industrial Chemistry (Ullmann Encyclopedia of Industrial Chemistry), 2005, Wiley VCH Verlag GmbH & Co.KGaA, Weinheim, " Calcium Carbide (Calcium Carbide)”). [0003] Calcium carbide has become particularly important in industry. It can be obtained from calcium oxide and coke in an electric arc furnace at 1,800-2,100°C. This method consumes a lot of energy, especially because a large proportion of the primary energy is lost during the production of electric energy. Obtain carbon monoxide as a by-product: [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/00C01B31/32C01B32/942
CPCC10H21/00C01B32/914C01B32/935C01B32/942C10J3/08C10J3/463C10J3/72C10J2300/093C10J2300/0943C10J2300/0959C10J2300/0973C10J2300/0983C10J2300/0996C10J2300/1634C10J2300/1838
Inventor H·莫亨L·姆莱齐科O·F-K·施吕特V·哈弗坎普F·刘
Owner LP AMINA
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