SU999961A3 - Method for producing gas containing hydrogen and carbon oxide - Google Patents

Abstract

1393033 Combustible gas SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ NV 12 June 1972 [14 June 1971] 27270/72 Heading C5E A gas containing H 2 and CO is made by partially combusting a hydrocarbon-based fuel, removing soot particles from the gaseous product by washing with water, agglomerating the soot in the wash water with added binder oil and removing the agglomerates from the water, combining the agglomerates with fuel oil at a pressure above 1 kg./cm.<SP>2</SP> and at a temperature above 100‹ C. and supplying the resultant mixture, as fuel, to the partial combustion step above.

Description

45) METHOD FOR OBTAINING GAS CONTAINING HYDROGEN AND CARBON OXIDE

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The invention relates to processes for the production of gases containing hydrogen and carbon monoxide by decomposing fuel oil and can be used in the gas and chemical industries in the 5 liter industry.

A method of producing a gas containing hydrogen and carbon monoxide is known by decomposing hydrocarbon fuels, followed by removing sulfur from gaseous decomposition products of the fuel by washing with water.

The main disadvantage of this method is the need to build an additional unit for the separation and utilization of a carbon black slurry, which complicates and increases the cost of the process.

The closest to the invention 20 to the technical essence and the achieved result is a method for producing a gas containing hydrogen and carbon monoxide, including gasification of fuel oil, removal

soot from gaseous gasification products by washing them with water, agglomerating soot in the resulting water-soot suspension with a binding additive with mineral oil, after which this suspension is crushed in the presence of oxygen in the reactor С2 3.

The main disadvantage of this method is the increased fuel consumption due to the attraction of an additional amount of fuel to the soot agglomeration, which is then irretrievably lost.

The purpose of the invention is to reduce fuel consumption.

The goal is achieved according to a method for producing a gas containing hydrogen and carbon monoxide, including gasification of fuel oil, removing soot from gaseous gasification products by washing them with water, agglomerating soot in the resulting water-soot suspension with a binder additive, and removing agglomerates. in which the agglomerates are connected to the oil fuel at a pressure of bar and a temperature of 100ЗЗ C, and the resulting mixture of soot and fuel is returned to the gasification stage. This method allows to reduce fuel consumption by 2.5 compared to the known one by eliminating the gratuitous loss of fuel at the regeneration stage. The selected numerical values of the temperature and pressure ranges are due to the fact that the lower temperature and pressure intervals depend on the viscosity of the resulting suspension and the possibility of pumping it by pumping equipment, and the upper intervals are due to the conditions for further processing the suspension and outside their implementation method is not economically feasible. EXAMPLE 1: In the reactor 8, an incomplete combustion of heavy oil fuel with a viscosity of 130 cSt occurs, with, in a stream of oxygen in the ratio of 70.3 m-oxygen, taken under normal conditions, at 1QO kg of fuel. You inject into the reactor a jet of steam in the ratio of 5 kg of steam per 100 kg of fuel. The hot, humid gas is directed to a heat exchanger, at the outlet of which a cooled gas stream is formed. Water is fed to the heat exchanger, which, evaporating under high pressure, is drained from the process. . . The cooled gas is rinsed with water in the cooler, and then immediately mixed more thoroughly with water in the wash tank. The water from the rinsing tank is again used to rinse the cooled gas. From the flush tank, the gas stream exits soot-free. Water but carbon black is freed from soot in the agglomerator by means of oil. The soot-free water is partially re-included in the wash cycle. Out of the excess water is drained. The resulting carbon black is 3% of the weight of the feed fuel. An agglomerator forms an agglomerator. By means of an injection pump, the flow of agglomerates is compressed to a pressure of 10 bar in the mixing chamber, where it is mixed with fuel, which is also supplied under pressure and has a temperature. The flow pressure is 60 bar and is provided to the pumps. In the agglomeration chamber, agglomerates are mixed with fuel. Foaming mixture does not occur. The mixture from this chamber is again directed to the entrance to the gasification reactor, as a result of which soot is recycled in the process described. Mixing the agglomerates with the fuel at a pressure of 10 bar and a temperature of 104 ° C gives a positive effect - the fuel consumption is reduced by 2.35 i in comparison with the method in which the agglomerates do not return to the gasification stage. Example2. In the reactor, incomplete combustion of pentane-type bitumen, which has a viscosity of 150 cSt, at 330 ° C, occurs in a stream of oxygen in the ratio of 66.3 m of oxygen, taken under normal conditions, per 100 kg of fuel. A steam jet is injected into the reactor at a ratio of 60 kg of steam per 100 kg of fuel. The hot, humid gas is directed to a heat exchanger, at the outlet of which a gas stream is cooled to about 300 ° C. Water is fed to the heat exchanger, which, by evaporation under high pressure, is removed from the process. The cooled gas is rinsed with water in the cooler, and then immediately mixed more thoroughly with water in the wash tank. The water from the rinsing tank is again used to rinse the cooled gas. From the flush tank, the gas stream exits soot-free. The soot slurry is freed from soot in the agglomerator with bitumen. The soot-free water is partially re-included in the wash cycle. Excess water is drained. The resulting soot forms the Ui weight of the feed fuel. Agglomerates are formed in the agglomerate. By means of an injection pump, the flow of agglomerates is compressed to a pressure of 150 bar in the mixing chamber, where it is mixed with fuel, which is also supplied under pressure and has a temperature of 330 ° C. The flow pressure is 60 bar and is provided by the pump.

In the agglomeration chamber, agglomerates are mixed with. fuel. Foaming mixture does not occur. The mixture from the chamber again brought up the inlet to the gasification reactor entrance, as a result of which soot was recycled in the process described.

Mixing agglomerates with fuel, at an ISO pressure of bar and at a temperature of 330 ° C, the weight consumption of fuel is positively reduced by 2, t)% compared to a method in which the agglomerates are not returned to the gasification stage.

Using the proposed method allows to reduce fuel consumption by 2.5, which will increase the technical and economic indicators of the gasification process.

Claims (2)

1. US patent No. 3559377, CL. 55-B5, published. 1971. 2. Patent of Germany No. 1-8997. cl. 12019/01, publ. 1970 (prototype).