SU1188192A1 - Melt for obtaining reducing gas - Google Patents

Abstract

A melt to produce a reducing gas by gasification with carbon vapor, including alkali metal chlorides, and with the fact that, in order to increase the yield of the target products, it contains XCg, NaC, CaCe, MgCfj FeCfj, MnCfj in the following ratio of components, May. %: KSg. 30-80 NaCr2-8 CaCIj 2-10 MgCI, 5-35 FeCB 1-10 MnCf, 1-10 (rt

Description

Icho () (| eteiie dtiosits: to receive 1); (1% gas from solid carbon-containing caves by gasification of solid fuels, namely, the composition of the melt for gasification with carbon vapor.

The need to replace oil and gas raw materials, which are lacking in many countries around the world, with solid fuels led to the development of new ways of processing solid fuels. to produce energy and carbon dioxide gases containing carbon monoxide and hydrogen, used to synthesize ammonia, methanol, and also as reducing gases in metallurgy and as a source of hydrogen.

The purpose of the invention is to increase the yield of the target gasification gas components.

The proposed melt composition is used as follows.

The salt mixture is loaded into a nickel-chromium alloy reactor heated by an electric furnace. Coal is fed to the reactor with a stream of inert argon gas. To carry out the gasification process and to stir the reaction mixture into the reactor through a tube that does not reach the bottom of the reactor, a steam-argon mixture is fed. Dp water supply using a piston pump. Water entrained by the flow of argon passes

measure; Generator is a steam and steam cleaner where the temperature is maintained: pa. The gasification process is conducted at 700-800 ° C under pressure close to atmospheric. The height of the melt bed in the reactor is 100 m. Unreacted water is collected in a condensate collector, and the resulting gas after drying is collected and analyzed by chromatography.

Example. 30 g of brown coal (fraction, 0.8-1.4 mm) are loaded with a stream of argon into a reactor containing a mixture of salts in the molten state. The temperature in the reactor 800 ° C. Water vapor is then introduced into the reactor at a rate of 1 ml / min. Argon flow rate 2 l / min. The pressure in the reactor is 1: 2 atm.abs. The ratio of water vapor to carbon is 2.3.

These experiments are presented in the table.

As can be seen from the table, an increase in the yield of the target products is observed when using a melt with the proposed ratio of components. As a melt can also be used waste production of selected electrolyte magnesium baths may. %: KSE 75-80; NaC 4-8, - CaCEj 810, MgCEj 5-7; FeCFj and MPS 1-3, which is partially used for the production of titanium tetrachloride.

The composition of the melt, May.%

KCE NaCe CaC 2 MgCE, FeCE,

Mnce

100 NaCf-35 NaOH-25

LiCF-65 NajC03-75 Gas composition, vol. % 80.0 80.7 73.0 0.5 0.5 1.2 12.5 13.1 13.4 7.0 5.7 12.4 Content CO + H ,. 92.5 94.3 86.4 84.8 83.2 vol. %

CO + Hj output of carbon fuel 30.2 34.0 39.5 69.470.8 1.41.0 13.912.4 15.415.8

20.0 32.3 30.4

42.6 36.2 23.6

Claims (1)

MELT FOR PREPARING A BOC-STATION GAS by coal gasification of water with steam, including alkali metal chlorides, with the exception that, in order to increase the yield of target products, it contains KSE, NaCE, CaS? ₂ , MgCf ₂ FeCf ₂ , MnSE ₂ in the following relation prostrate components, may. %: KSE 30-80 NaCP 2-8 CaCl _{1 2} 2-10 MgCi ₂ 5-35 Fece ₂ 1-10 s <o £