The method of converting thermal energy and hydrocarbon gaseous fuel and the products of conversion

 

(57) Abstract:

Usage: in heat, gas and chemical industries. The inventive carry out heating of the purified gaseous hydrocarbon fuel, cleansing it of impurities, mixing with water vapor in the system, heating the mixture formed in the Converter by the products of combustion of part of the hydrocarbon fuel in the system to obtain an intermediate product in the conversion of hydrocarbon fuel. Purified gaseous hydrocarbon fuel are also expanding into additional turbine and a gas turbine expands the intermediate product of hydrocarbon fuel conversion. 3 Il.

The invention relates to a power system, and can also be used in gas and chemical industries.

There is a method of converting thermal energy and hydrocarbon gaseous fuel and the products of conversion [1] it is warm catalytic conversion process is used for generating steam and power a steam turbine to drive technological syngas compressor. Drive other process compressors and pumps by using steam turbines, working eduit include a significant expenditure of thermal energy, chemically cleaned and recycled water, increased toxicity and negative thermal impact on the environment.

As a prototype of the selected method [1] which consists in the successive heating of the gaseous hydrocarbon fuel, cleaning from impurities, offset with steam in the mixer, heating the mixture formed in the Converter, the products of combustion of part of the hydrocarbon fuel oxidizing agent to obtain an intermediate product of hydrocarbon fuel conversion, expansion in a gas turbine of the gas mixture and the flow of the exhaust mixture in the boiler to produce steam for the steam turbine.

The prototype of the inherent low efficiency, increased toxicity and negative thermal impact on the environment.

For corrective optionally after purification from impurities gaseous hydrocarbon fuel to expand into additional turbine and reduce the compressor as the working environment, expanding in a gas turbine, using the intermediate product of hydrocarbon fuel conversion, part of the steam turbine selected for supply to the mixer and advanced Converter, the resulting product is ktore combustion products lead by their offsets, and heating a hydrocarbon fuel by heat exchange with the exhaust steam turbine steam.

The proposed method can be implemented processes and high-temperature catalytic conversion. Depending on the composition of the final product conversion as oxidant use oxygen or air.

Increase efficiency, reduce toxicity and reducing the negative thermal impact on the environment is achieved efficient conversion of thermal energy of the reaction conversion in the work, the lack of flue gases and reducing the consumption of chemically treated water.

In Fig. 1 and 2 shows the schematic of the power and process plants, respectively, with high temperature and catalytic conversion processes using as the oxidant oxygen. In Fig.3 is a diagram of the installation, as the oxidant is air.

The invention is carried out as follows. Gaseous hydrocarbon fuel is heated in the condenser 1, is cleaned in the cleaning unit 2 from impurities, expand into additional turbine 3, is compressed in the compressor 4 and is mixed in the mixer (in General) with water vapor and carbon dioxide. the product conversion, which then expands in a gas turbine 6 and is cooled in the exhaust-heat boiler 7. Additional convector 8 after submission there water vapor perform the conversion of the intermediate product in the final product conversion, after which it is cooled in the gas-heater 9 with condensation and return to the installation of the water. In the cleaning unit 10 is the end product of the conversion purified from carbon dioxide and part of it is sent to the mixer. Water vapor obtained in the HRSG 7 expands in the steam turbine 11 with extraction steam in the mixer of the heater 5 and the additional Converter 8. The required amount of water supply by the supply of the chemical water treatment unit 12. With the help of the pump 13 to increase the pressure of the water in the steam circuit to the required level. When carrying out catalytic conversion process (see Fig. 2) part of the hydrocarbon fuel is burned in the combustion chamber 5A, the mixture of combustion products from the hydrocarbon fuel is mixed in the mixer 5B with water vapor and carbon dioxide, the mixture is passed through the reaction tube 5B and sent to the second stage of the Converter g

When used as an oxidant air (see Fig.3) it is compressed in the compressor 14 and returnin the conversion process, contains the condenser 1, the cleaning unit 2 from impurities, additional turbine 3, a compressor 4, the Converter 5, the gas turbine 6, boiler 7, the additional Converter 8, the gas heater 9, the cleaning unit 10 from carbon dioxide, steam turbine 11, the chemical water treatment unit 12 and the pump 13.

In the installation, carrying out the method with a catalytic conversion process (see Fig.2),the Converter comprises a combustion chamber 5A, the mixer 5B, the reaction tube 5B and the second level Converter g

Energy technology installation, using as oxidant air (see Fig. 3) additionally includes a compressor 14.

The method of converting thermal energy and hydrocarbon gaseous fuel and the products of conversion, which consists in the successive heating of the gaseous hydrocarbon fuel, cleaning from impurities, mixed with steam in the mixer, heating the mixture formed in the Converter by the products of combustion of part of the hydrocarbon fuel oxidizing agent to obtain an intermediate product of hydrocarbon fuel conversion, expansion in a gas turbine of the gas mixture and the flow of the exhaust mixture in the boiler to produce steam for provoo expand into additional turbine and compressed in the compressor, as a working environment, expanding in a gas turbine, using an intermediate product in the conversion of hydrocarbon fuel, a portion of the steam from the steam turbine selected for supply to the mixer and advanced Converter, the final conversion product purified from carbon dioxide and part of it is sent to the mixer, and heating the mixture formed in the Converter, the combustion products produced by mixing and heating a hydrocarbon fuel by heat exchange with the exhaust steam turbine steam.

 

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