SU1052164A3 - Method for continuous gasification of coal - Google Patents

Abstract

Process for the continuous gasification of solids or liquids, contg. carbon and/or hydrocarbons, in a reactor contg. a bath of molten iron, the novelty being that the reactants, (a) the carbonaceous solids or liqs., and (b) oxygen or media contg. oxygen, are blown into the bath by one or more tuyeres located in the reactor below the free surface of the bath in a refractory lining and which therefore wear way at the same rate. Materials (a) are pref. coal and/or heavy oil, whereas material (b) is pref. oxygen, surrounded by a protective medium of, or contg., gaseous or liq. hydrocarbonds. The reactants are pref. fed simultaneously together with any finely-powdered slag-making materials via the tuyere(s), or they may be added separately. Used for prodn. of redn. gas fed to a blast furnace for mfg. crude iron from iron ore, where the use of the redn. gas results in a substantial saving of the amt. of coke required.

Description

The invention relates to methods for processing carbon-containing gas, in particular, to a method for continuous gasification of coal. The known method of continuous gasification of coal in a lined peakor with a molten metal, BKJTO, which feeds coal and acidic gas of a second gas into the reactor below the level of the molten metal through pipes introduced into the molten metal and the subsequent gasification f 1 J A known method is partly broken. for the replacement of pipes and the poor quality of the gas produced, which adversely affects: the productivity of the process: The purpose of the invention is to increase the productivity of the process. This goal is achieved by the fact that according to the method of continuous gasification of coal in a lined reactor with molten metal, including the supply of coal and oxygen-containing gas to the reactor, is lower than the level of the molten Metal and subsequent gasification, coal and oxygen-containing gas will be poured into molten metal. centrally installed pipes, the output nozzles of which are located at the level of Lining C to reduce wear of the pipe for. oxygen-containing taa-a is supplied. 7-7 straight or liquid hydrocarbons through a pipe located close to the pipe to supply oxygen to the carrier gas, or gaseous or liquid hydrocarbons are introduced into the pipe to feed carbon. Before serving in the molten metal, the coal is mixed. , with oxygen-containing gases in the pipe for iodine oxygen-containing gas flow. coal is reported to rotate. PRIMER 1 The process of continuous gasification is carried out in a 20-meter futher-reactor with four nozzles in the bottom, each of which is made up of three concentrically installed pipes whose outlets are located at the lining level. The central tube of each nozzle with a diameter of 10 mm in light is used to supply coal dust. An annular gap between the inner and second pipes 3 mm wide serves to supply oxygen, and propane is fed through the outer annular gap between the second and third pipes 1 mm wide. The reactor contains 30 tons of molten iron, which contains 1.5-2.5% carbon. . The temperature of the melt is 137 ° C-1450 ° C. 12,000 kg / h of coal, 10,800 tons of ice, 216 nm3 / H of propane are introduced into the molten 4-melts. At the same time, 25,000 are obtained. gas containing,%: CO 65.5 G Yy 34.2 and CO 0.3. For one month (720 h), the nozzles evenly heat 200 mm in diameter without disrupting the gasification process. When the specified period expires, the process is stopped. To replace the nozzles. A and M 2. Example 1 is repeated with the difference. That the reagents are fed to the nozzles located in the side wall of the reactor below the metal level. At the same time, 25,000 gases are obtained containing,%: CO 65.51 T | H 34.3 and CO, 0.2. The process is carried out without; any violations within 740 hours. Rome, p. 3. Example 1 is repeated, with the difference that the reagents are supplied by yo soplam, each: of which the issue is 6-1-1 yen. From two district-located pipes. At the same time, coal is supplied along the inner pipe: PROPANO, and YO gives oxygen to the annular gap between the inner and outer pipes. 25000 nm3 / h of gas of the following composition are obtained:% 5 CO 65.5 / Bg 34.2 and CO 0.3. The process is carried out without any kind. For: bobo.ch.-;: -.: .-,::: .... In Me p 4, Example 3 is developed with the difference that rotational motion is absorbed by the flow of coal. In this case, g -s 25,000 dm3 / h times the composition,% CO 65.5j H2 and COg are obtained during the course of h. With Me p 5 Example 1 is repeated. with TOH pasHHitei - - that the process was carried out in a 20-meter lined reactor with a syringe: by using four nozzles in the reactor, each of which was made of co-centrically installed pipes. RO The inner tube is fed, and through the annular gap between the inner and outer pipes 1 | ;,; - ;,:,, - /. Yari etom.y 400 h receive 25,000 gas respectively,% $ CO 65, SG N. 34, E and CO 0.4. When the specified period expires. Process j is stopped to replace the nozzles. Example 6. Example 1 is repeated. On that occasion, in order to place a yropaya yo yar, a yellow gas is fed to its annular gap. With this s. Leaks 720 j receive 25,000 gas containing. It with 65.5 N, 34.2 and CPg 0.2. , Ir and 7; comparative, according to the prototype) Repeat example 1 with the difference that the gasification process is carried out in a 20-meter-lined reactor equipped with separate pipes for supplying coal and oxygen installed in the side wall in opposite places. Outlets of a pipe with a diameter of 100 mm for supplying coal and pipe di / -. E: 10521644

3 mm meter for the supply of acid LOROLCO 60.5; H2 32 and COj. After they are located in the expanded Metal.;

; At the same time, within 12 hours half a year, the Crustavdt for the zeadena of the pipe for feeding

; 2500 Pm nm gas of composition%: oxygen.

Claims (5)

1. THE METHOD OF CONTINUOUS GASIFICATION OF COAL in a lined reactor with molten metal, including. supplying coal and oxygen-containing gas to the reactor below the level of the molten metal And subsequent gasification, with the exception that, in order to increase the Productivity, coal and oxygen-containing gas are supplied to the molten metal by means of concentric .. . / installed pipes, the outlet nozzles of which are located at the lining level. 2. The method according to π. 1, the fact is that, in order to reduce the wear of the pipe for supplying oxygen-containing gas, gaseous or liquid hydrocarbons are supplied through a pipe located concentrically with respect to the pipe for supplying oxygen-containing gas. 3. The method according to π. 1, starting with the fact that, in order to reduce wear of the pipe for supplying oxygen-containing gas, gaseous or liquid hydrocarbons are introduced into the pipe for supplying coal. 4. The method according to π. 1, with the fact that before feeding the th molten metal, coal is mixed with an oxygen-containing gas in a pipe for supplying an oxygen-containing gas. 5. The method according to me. 1, with the fact that rotational motion is reported to the coal stream. . „SU. 1052164. "*