The method of operation of gas-steam power technology installation

 

(57) Abstract:

The method of operation of gas-steam power technology is based on the compression of hydrocarbon gas in the compressor, oxidative thermochemical turning it into an intermediate product of conversion in the form of partial oxidation or steam and / or carbon dioxide conversion, expansion in the gas turbine intermediate conversion. When compressed hydrocarbon gas in the compressor part of it is withdrawn from an intermediate compression stage. The remaining part of the raw material after compression is subjected to oxidative thermochemical transformation in the form of partial oxidation with heat release. Selected portion of the hydrocarbons are subjected together with the product of partial oxidation or without oxidative thermochemical transformation in the form of steam and / or carbon dioxide conversion with absorption of heat, and use part of the heat of the partial oxidation of hydrocarbons. In gas turbine first expand the product of partial oxidation of hydrocarbons, and after the intermediate stage of expansion - total intermediate product of partial oxidation and steam is anouki. 2 C.p. f-crystals, 1 Il.

The invention relates to a power system, can be used in gas, oil, chemical and coal industries, as well as in solving environmental problems.

The known method of operation of the electrotechnological installations designed for the conversion of gaseous hydrocarbon raw materials [1]. It gaseous hydrocarbon raw material is successively heated, cleaned from impurities and is mixed with steam in the mixer. The resulting mixture is subjected to oxidative thermochemical transformation in the form of steam reforming in the intermediate conversion product with absorption of heat burned hydrocarbon fuel gas mixture high pressure. The obtained gas mixture is expanded in a gas turbine and fed into the recovery boiler to produce steam for the steam turbine.

The disadvantages of this method include low efficiency, increased toxicity and significant thermal impact on the environment.

As a prototype of the selected method [2], which consists in compressing gaseous hydrocarbon raw materials in the compressor, oxidative thermochemical turning it into an intermediate product conaway turbine intermediate product of the conversion.

The prototype of the inherent low efficiency and power obtained by converting heat into mechanical energy.

To correct any deficiencies noted during compression of hydrocarbon gas in the compressor part of it is withdrawn from an intermediate compression stage, and the remaining part of the raw material after compression is subjected to oxidative thermochemical transformation in the form of partial oxidation with heat selected portion of the hydrocarbons are subjected together with the product of partial oxidation or without oxidative thermochemical transformation in the form of steam and / or carbon dioxide conversion with absorption of heat, and use part of the heat of the partial oxidation of hydrocarbons, gas turbine, first expand the product of partial oxidation of hydrocarbons, and after the intermediate stage of expansion - total intermediate product of partial oxidation and steam and / or carbon dioxide conversion of hydrocarbons.

To further increase efficiency, the power and extend the functionality of oxidative thermochemical transformation in the form parciales to further increase the efficiency and capacity of part of the hydrocarbon, intended for oxidative thermochemical transformations in the form of partial oxidation, fully oxidize.

Increase efficiency and capacity is achieved by thermal energy saving, reducing consumption of expensive oxidant, increasing consumption, expanding the working fluid and its intermediate heating. Functionality is expanded through the use of liquid and solid hydrocarbons. Further enhancing the efficiency and power is provided by a stronger heating of the working fluid.

The drawing shows one variant of thermal scheme of gas-steam power technology installation.

The invention is carried out as follows. The pre-purified gaseous hydrocarbon raw material is compressed in the compressor 1. Part of the raw materials are selected, and the remaining compressed in the compressor 2. After further heated in the heat exchanger 3 it is subjected to partial oxidation in the reactor 4, in the General case consists of several steps. The product of partial oxidation expand in gas turbine 5 high pressure, cooled in heat exchanger 6 and is mixed with a selected part of the hydrocarbons in the MCA is rsii in a catalytic reactor 9. The resulting total intermediate product expands in the gas turbine 10 low pressure, and then passed into the facility design, paired with a steam circuit 11. If heat is a product of partial oxidation is passed into a catalytic reactor 9 by heat without mixing with the hydrocarbon feedstock, the cleaning unit 8 can be installed after the steam generator steam circuit 11 (not shown). In this case, the reactor 4 is supplied to only a part of water vapor and / or carbon dioxide. The remainder is fed to the catalytic reactor. The mixture of products of partial oxidation and steam and / or carbon dioxide conversion is performed before the gas turbine 10 low pressure.

In one of the steps of the reactor 4 may be filed liquid or powdered solid hydrocarbon feedstock 12. As the gaseous raw material, it is subjected to partial oxidation. In this case, the cleaning unit 8 must be removed, in addition to carbon black, other harmful impurities.

Part of hydrocarbons (the cheapest) in one of the stages of the reactor 4 can be completely oxidized. Due to a stronger heating of the working fluid will increase the power and efficiency of gas-steam installation.

Sources of information

1. Arsenyev L. C., Tyryshkin Century, Combined plant with gas turbines. - L.: engineering, 1982, 195-196 C., Fig. VI-8.

2. RF patent 2090769. The method of converting thermal energy and hydrocarbon gaseous fuel and the products of conversion. /Grishin, A. N., F 02 3/28, F 01 23/04, bull. 26, 20.09.1997.

1. The method of operation of gas-steam power technological plants, which consists in compressing gaseous hydrocarbon raw materials in the compressor, oxidative thermochemical turning it into an intermediate product of conversion in the form of either partial oxidation or steam and / or carbon dioxide conversion, expansion in the gas turbine intermediate conversion, characterized in that the compression of hydrocarbon gas in the compressor part of it is withdrawn from an intermediate compression stage, the remaining portion sirlene warmth, selected portion of the hydrocarbons are subjected together with the product of partial oxidation or without oxidative thermochemical transformation in the form of steam and / or carbon dioxide conversion with absorption of heat, and use part of the heat of the partial oxidation of hydrocarbons, gas turbine, first expand the product of partial oxidation of hydrocarbons, and after the intermediate stage of expansion - total intermediate product of partial oxidation and steam and / or carbon dioxide conversion of hydrocarbons.

2. The method according to p. 1, characterized in that the oxidative thermochemical transformation in the form of partial oxidation is additionally subjected to a liquid or powdered solid hydrocarbons.

3. The method according to PP. 1 and 2, characterized in that the portion of hydrocarbon raw materials intended for the oxidative thermochemical transformations in the form of partial oxidation, fully oxidize.

 

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