Method for production of synthesis gas

 

(57) Abstract:

The invention relates to the processing of hydrocarbon raw materials, in particular the production of synthesis gas from a hydrocarbon feedstock and can be used in the oil and gas industries in the oil and gas industry and so on, a Method for production of synthesis gas involves the oxidation of hydrocarbons oxidizing agent in the internal combustion engine of the compression type when the oxidant excess coefficient less than 0.8, the feedrate for the activation process in the working volume of the internal combustion engine of the compression type initiators partial oxidation number of less than 10 vol.% hydrocarbon raw materials. The compression ratio of the internal combustion engine of the compression type select and/or adjust from 13 to 30 and surfaces of the internal combustion engine of the compression type made of a material and/or covered with materials that stimulate the process of partial oxidation. The invention allows to improve the quality of the synthesis gas, to increase productivity. 9 C.p. f-crystals, 1 tab., 1 Il.

The invention relates to the processing of hydrocarbon raw materials, in particular the production of synthesis gas from ogleoodles, in the oil and gas industry, etc.

There is a method of generating synthesis gas in an internal combustion engine of the compression type from a mixture of gaseous hydrocarbon and air (patent RF N 2096313, CL 01 In 03/36).

The closest proposed method is a method for production of synthesis gas by partial oxidation of a mixture of hydrocarbons with air in the ratio of oxygen to the amount of hydrocarbon alpha = 0.5 to 0.8. The mixture is compressed by the piston in the cylinder of the internal combustion engine of the compression type to the occurrence of ignition and obtaining a temperature of 1,300-2,300oC for a period of 10-3-10-2C. the oxidation Process stimulates the flow of products of partial oxidation in the amount of about 10-20. % initial raw material entered in the number 90-80% vol. (RF patent N 2119888, CL 01 In 03/36).

The main disadvantage of the prototype is a large number of products of partial oxidation (10 - 20 rpm. % initial raw material) allocated for the activation process, this leads to a reduction of output of products of partial oxidation and increased unit costs of the products of the process, as as other is also used as oxidant only air.

The invention is proposed to solve the following problems:

1. Improving the quality of the synthesis gas and the expansion of the range of the ratio H2/CO.

2. Increasing the productivity of the process.

3. The reduction in the unit cost of the products of the process.

4. The expansion of the range equipment internal combustion engines.

These tasks are solved in a method of producing synthesis gas comprising partial oxidation of hydrocarbon oxidizing agent in the internal combustion engine of the compression type when the oxidant excess coefficient less than 0.8, the feedrate for the activation process in the working volume of the internal combustion engine of the compression type initiators partial oxidation number of less than 10 vol.% hydrocarbon raw materials. The compression ratio of the internal combustion engine of the compression type select and/or adjust from 13 to 30 and surfaces of the internal combustion engine of the compression type made from materials and/or cover material, activating the process of partial oxidation. The coefficient of excess oxidant is the molar ratio of the actually consumed amount of oxygen to stoichiometric.

In the working volume of the motor is stout raw materials, and/or initiators of partial oxidation and/or water vapor and/or carbon dioxide, and/or the oxidizing agent serves in the working volume in the cycle of compression of the working mixture.

Initiators and/or oxidant, and/or water vapor and/or carbon dioxide, and/or hydrocarbon feedstock is fed to the supply line of the initiators of partial oxidation.

Working a mixture of hydrocarbon fuel to oxidant temperature for conducting the process of partial oxidation.

Proponents of partial oxidation, and/or hydrocarbons and/or water vapor and/or carbon dioxide, and/or the oxidant is fed through a catalytic reactor in the working volume of the internal combustion engine of the compression type.

To initiate the process of partial oxidation of use remaining in the working volume of the internal combustion engine of the compression type, the products of partial oxidation.

Additional use(s) of the ignition.

The process proceeds at different speeds of rotation of the internal combustion engine of the compression type.

Select and/or adjust valve timing of the engine.

In the proposed method, to act to the original raw materials. As the initiators are used, the products of partial oxidation as produced in internal combustion engines and from an external source, hydrogen, hydrocarbons, nitrogen compounds, ORGANOMETALLIC compounds, oxygenates, and mixtures thereof, esters, waste chemical processes and plants, which contain the initiating components, etc., and/or hydrocarbons (and/or steam and/or liquid and/or gaseous phase(s)), and/or water vapor and/or carbon dioxide, and/or initiators are served in the supply line of the initiators of partial oxidation and/or in the working volume of the engine, in a cycle of compression of the working mixture.

In the working volume of the internal combustion engine serves and/or water vapor and/or carbon dioxide, for these(CSOs) processes(a) partial oxidation mixture is heated to a temperature capable of performing process, heating of the working mixture is performed in the other processing steps. Heating of the mixture is carried out until 350oC depending on the composition of the working mixture of hydrocarbons and other components) and the quality requirements of the products of partial oxidation, in particular the ratio of H2/CO.

In the supply line of the initiators served and/or initiators, and/or oxidant, and/or water vapor and/s reactor, and then in the working volume of the engine.

The technological process is carried out in internal combustion engines of various types (piston, Wankel, and so on). Working surfaces of the engine are made of a catalytically active material and/or working surfaces apply a catalytically active composition and/or the elements that contribute to the process of partial oxidation, in particular, by reducing heat loss, increasing the temperature of the wall displacement (cylinder, housing, etc), working body (piston, rotor and so on and so on

Technological process occurs at different engine speeds in the range from 100 to 10,000 Rev / min, the compression rate of from 13 to 30. Ventilation of the working volume(s) of ice necessary to remove the products of combustion air. During the process of partial oxidation in a combustion engine (CHR) serves the working mixture containing hydrocarbons and other valuable components that are ventilated through the working volume. In this regard, for each CHR and/or select and/or adjust valve timing.

The method is as follows (drawing).

In the mixer 1 serves the oxidant and the hydrocarbon with the oxidant excess coefficient penmetsa working body 3, in particular the piston, until the ignition and implementation of the reactions of partial oxidation, with subsequent expansion, cooling and output products of partial oxidation, in particular the synthesis gas from the working volume. To activate the process in the working volume of the internal combustion engine serves the initiators of partial oxidation to 10 vol.% for starting materials. As the initiators of partial oxidation are the products of partial oxidation as produced in internal combustion engines and from an external source, as well as hydrogen, hydrocarbons, nitrogen compounds, ORGANOMETALLIC compounds, oxygenates, and mixtures thereof, esters, waste chemical processes and plants that contains the initiator components, and the like.

The process then repeats.

As oxidant use air and/or air enriched with oxygen and/or oxygen.

To change the qualitative composition of the synthesis gas in the internal combustion engine serves water vapor (H2O) and/or carbon dioxide, as a result, for example, for methane receive the ratio of H2/CO in the synthesis gas in the range from one to three. In this case, the working mixture of hydrocarbons, such as methane, oxidizer, water vapor and/or carbon dioxide) is heated to temperata process operations. The qualitative composition of the products of partial oxidation may vary when using different types of hydrocarbons and other components of the mixture. So, for example, ethane molar ratio and the composition of the synthesis gas varies depending on the feed components (water vapor or carbon dioxide).

C2H6+ O2= 2CO + 3H2< / BR>
the molar ratio of H2/CO = 1,5

C2H6+ 2H2O = 2SD + 5H2< / BR>
the molar ratio of H2/CO = 2,5

C2H6+ 2CO2= 4CO + 3H2< / BR>
the molar ratio of H2/CO = 0,75

For other compositions of hydrocarbon raw materials and components working mixture also change the quantity, quality and composition of the products of partial oxidation. Hydrocarbons are served in the gaseous and/or liquid and/or vapour phase(e).

Hydrocarbons, and/or initiators, and/or water vapor and/or carbon dioxide, and/or the oxidant may be fed into the supply line of the initiators, the mixture is then served in a working volume of 3 and/or the mixture is fed to the working volume through the catalytic unit 5 (reactor).

And/or hydrocarbons and/or initiators, and/or water vapor and/or carbon dioxide is served in rabois materials, and/or covered with materials that stimulate the process of partial oxidation. To activate the process of partial oxidation of use remaining in the working volume of the products of partial oxidation.

In the process could be further used in the ignition system of the internal combustion engine 4.

In the course of the technological process in the internal combustion engine generates mechanical energy that can be used to produce electricity in the generator mounted on the shaft of the internal combustion engine or to drive other mechanisms, in particular compressor, etc.

The proposed method was implemented on a single-cylinder internal combustion engine (type KAMAZ-740). Examples of the method are shown in the table.

1. Method for production of synthesis gas, comprising partial oxidation of hydrocarbon oxidizing agent in the internal combustion engine of the compression type when the oxidant excess coefficient less than 0.8, the feedrate for the activation process in the working volume of the internal combustion engine of the compression type initiators of partial oxidation, characterized in that the initiators are served in less than 10 vol.% hydrocarbon raw materials, the compression ratio of the engine vnutrennego combustion compression-type is made from materials and/or cover materials, which stimulates the process of partial oxidation.

2. The method according to p. 1, characterized in that the working volume of the internal combustion engine of the compression type serves water vapor and/or carbon dioxide.

3. The method according to p. 1 or 2, characterized in that the hydrocarbon feedstock, and/or initiators of partial oxidation and/or water vapor and/or carbon dioxide, and/or the oxidizing agent serves in the working volume in the cycle of compression of the working mixture.

4. The method according to any of paragraphs. 1 to 3, characterized in that the initiators and/or oxidant, and/or water vapor and/or carbon dioxide, and/or hydrocarbon feedstock is fed to the supply line of the initiators of partial oxidation.

5. The method according to any of paragraphs. 1 to 4, characterized in that the mixture of hydrocarbon and oxidant is heated to a temperature capable of performing a process of partial oxidation.

6. The method according to any of paragraphs. 1 to 5, characterized in that the initiators of partial oxidation, and/or hydrocarbons and/or water vapor and/or carbon dioxide, and/or the oxidant is fed through a catalytic reactor in the working volume of the internal combustion engine of the compression type.

7. The method according to any of paragraphs. 1 - 6,heme internal combustion engine of the compression type, the products of partial oxidation.

8. The method according to any of paragraphs. 1 to 7, characterized in that the additional use(s) of the ignition.

9. The method according to any of paragraphs. 1 to 8, characterized in that the process proceeds at different speeds of rotation of the internal combustion engine of the compression type.

10. The method according to any of paragraphs. 1 to 9, characterized in that select and/or adjust valve timing of the engine.

 

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FIELD: hydrocarbon conversion catalysts.

SUBSTANCE: catalyst for generation of synthesis gas via catalytic conversion of hydrocarbons is a complex composite composed of ceramic matrix and, dispersed throughout the matrix, coarse particles of a material and their aggregates in amounts from 0.5 to 70% by weight. Catalyst comprises system of parallel and/or crossing channels. Dispersed material is selected from rare-earth and transition metal oxides, and mixtures thereof, metals and alloys thereof, period 4 metal carbides, and mixtures thereof, which differ from the matrix in what concerns both composition and structure. Preparation procedure comprises providing homogenous mass containing caking-able ceramic matrix material and material to be dispersed, appropriately shaping the mass, and heat treatment. Material to be dispersed are powders containing metallic aluminum. Homogenous mass is used for impregnation of fibrous and/or woven materials forming on caking system of parallel and/or perpendicularly crossing channels. Before heat treatment, shaped mass is preliminarily treated under hydrothermal conditions.

EFFECT: increased resistance of catalyst to thermal impacts with sufficiently high specific surface and activity retained.

4 cl, 1 tbl, 8 ex

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