Combined method of electric power and a liquid synthetic fuel production by gas turbine and steam-gas installations
FIELD: electric power and chemical industries; methods of production of the electric power and liquid synthetic fuel.
SUBSTANCE: the invention presents a combined method of production of the electric power and liquid synthetic fuel with use of the gas turbine and steam-gaseous installations and is dealt with the field of electric power and chemical industries. The method provides for the partial oxidation of hydrocarbon fuel in a stream of the compressed air taken from the high-pressure compressor of the gas turbine installation with its consequent additional compression, production of a synthesis gas, its cooling and ecological purification, feeding of the produced synthesis gas in a single-pass reactor of a synthesis of a liquid synthetic fuel with the partial transformation of the synthesis gas into a liquid fuel. The power gas left in the reactor of synthesis of liquid synthetic fuel is removed into the combustion chamber of the gas-turbine installation. At that the degree of conversion of the synthesis gas is chosen from the condition of maintenance of the working medium temperature at the inlet of the gas turbine depending on the type of the gas-turbine installation used for production of the electric power, and the consequent additional compression of the air taken from the high-pressure compressor of the gas-turbine installation is realized with the help of the gas-expansion machine powered by a power gas heated at the expense of the synthesis gas cooling before the reactor of synthesis. The invention allows simultaneously produce electric power and synthetic liquid fuels.
EFFECT: the invention ensures simultaneous production of electric power and synthetic liquid fuels.
2 cl, 2 dwg
The present invention relates to energy, in particular to a method of generating electricity in gas-turbine and combined-cycle plants using synthesis gas as fuel for these plants, as well as for production of liquid synthetic fuels.
The basis of modern energy are thermal power plants using fossil fuel and internal combustion engines with liquid fuel.
Their promising development is associated with three main problems.
1. Improving the efficiency of fuel use in connection with the growth of its value. This problem is solved mainly through the creation of highly efficient combined-cycle plants with high temperature gas turbines.
2. Production of liquid motor fuel from crude oil, and natural gas and coal resources as the latter is considerably higher than oil resources.
The basic technological processes of production of synthetic liquid fuels based on their synthesis from synthesis gas produced primarily by steam-oxygen conversion of the original hydrocarbon fuel.
Currently, however, these processes can not compete with the production of motor fuels from oil for economic reasons, although in some regions, particularly in South Africa there are industrial the basic installation.
3. Environmental problems associated with the release into the environment of carbon dioxide, toxic sulfur oxides, nitrogen oxides, and fly ash.
Existing methods of preventing harmful emissions into the environment lead to a significant increase in the cost of energy generated.
The present invention aims to provide maximum efficiency at the same time these three problems in one energy chemical complex due to the rational Association of technology.
This effect is achieved through cross-weave technology, in which one process operation is solved multiple targets.
The known method for production of synthesis gas from solid or liquid hydrocarbon fuel by steam-oxygen gasification and use of the produced synthesis gas to produce methanol as a fuel for combined-cycle plants (Drow D.P. et.al. "Fuel and Power running time - The Liquid Phase Method (LPMEH TM) Process Demonstration at Kingsport", Fifth Annual DOE Clean Coal Technology Conference (Tampa FL), January 1997).
The disadvantage of this process is that the generation of synthesis gas is carried out in an independent setting with your system produce oxygen and system for compression of the synthesis gas to high pressure.
There is practically no mutual influence of the United energy technologies and SinTe the practical liquid fuel each other, resulting in significantly reduced economic effect.
Closest to the proposed technical solution is the way to generate electricity in thermal power plants, including oxidative gasification of fuel with air under pressure and subsequent purification of the products of gasification, the fuel is subjected to gasification in the reactor under a maximum pressure in the energy cycle with subsequent cooling of the products of the gasification part of the working fluid of the power plant and afterburning of clean gas in the combustion chambers of power plant (Autospid. The USSR № 263064, IPC 10, Int.Cl. F 23, England No. 1104075, France No. 1427256, Japan No. 916736, prototype)
The disadvantage of this method is that the resulting synthesis gas is used only for power generation in combined-cycle power plant and solve environmental problems without passing the production of synthetic liquid fuel, which could significantly increase the economic performance of the process.
The present invention allows to solve more complex technical task, than those, which are solved by the aforementioned methods, due to the fact that the proposed method allows you to organize comprehensive and environmentally friendly process using natural organic fuels to produce electrical energy is energy and the production of synthetic liquid fuels, and thereby greatly increase its efficiency.
This technical problem is solved by the fact that in the combined production of electricity and synthetic fuels using gas-turbine and combined-cycle plants, including partial oxidation of hydrocarbon fuel into the compressed air stream, chosen for the high-pressure compressor of a gas turbine installation with subsequent doumanian, synthesis-gas pre-treatment, including cooling and environmental clean-up, the resulting synthesis gas is fed forward in the synthesis reactor with partial conversion of synthesis gas into synthetic fuel remaining in the reactor power gas is directed into the combustion chamber of a gas turbine, the degree of conversion of synthesis gas selected from conditions for maintaining the temperature of the working fluid at the inlet to the gas turbine is determined by the type of gas turbine used for power generation.
The technical problem is also solved by the fact that in the proposed method, the subsequent digimania air, chosen for the high-pressure compressor of the gas turbine installation is carried out using an expander driven energy gas, heated by cooling the synthesis gas to the reactor the synthesis.
1 shows a diagram explaining the essence of the invention.
Figure 2 shows the results of the feasibility analysis of the relative cost of electricity generated by the steam turbine coal-fired power plants with flue gas from the SO2(PTU), in power plants with gas turbines gas (PTU) and in the proposed energohimmash complex gas (AHC).
The proposed method using the scheme shown in figure 1, is as follows.
In the partial oxidation reactor 1 serves all used in complex natural gas and compressed with a compressor 2 of a gas turbine and compressor 3 expander air.
In the reactor 1 at a temperature of about 1100°there is a partial oxidation of natural gas to synthesis gas, deballasting nitrogen of the air. The resulting synthesis gas is cooled in the gas cooler 4, if necessary, cleaned of soot formed and sent to the synthesis reactor, a liquid synthetic fuel 5.
The conversion of the synthesis gas is set so that the calorific value leaving the reactor 5 energy gas was sufficient for efficient combustion in the combustion chamber 6 of the gas turbine installation, ensuring that the temperature of the working fluid before the gas turbine 7.
Energy gas leaving the synthesis reactor 5, is heated in the gas cooler to a temperature of 500-540°by cooling the hot synthesis gas and fed into the gas turbine 8 expander leading booster compressor 3.
Energy low calorie gas after expansion in the expander is directed into the combustion chamber 6 of the gas turbine installation.
The heat of the combustion products after the gas turbine 7 is disposed in the exhaust-heat boiler 9 to generate high-pressure steam. For this purpose, using the heat of the hot synthesis gas. The resulting steam after the drum separator 10 overheat in the gas cooler 4 and is sent to a steam turbine for generation of electric power.
If necessary, the heat of condensation of steam Q1after the steam turbine 11 is used to produce heat for heating and industrial purposes.
The positive effect of technical solution is achieved by the following methods.
To produce synthesis gas is a compressed air downstream of the compressor of the gas turbine installation. Thus, there is no need to create your own economy to produce oxygen, and it is compressed to high pressure.
- Use single-pass reactor for the synthesis of synthetic liquid fuels with a low degree of conversion without C is kuleli synthesis gas, since leaving the synthesis reactor of synthetic liquid fuels energy gas is still used as fuel for the power plant.
Effectively recuperated energy is compressed to high pressure energy of the gas due to its expansion in the expander and in a gas turbine.
- Due to the fact that in the combustion chamber of a gas turbine low-calorie burned gas containing mainly hydrogen and carbon monoxide, no formation of toxic nitrogen oxides. Therefore, the products of combustion emitted into the atmosphere, do not contain harmful impurities and thereby the energy complex is environmentally friendly.
- Due to high fuel utilization ratio (>85%) reduced emissions of carbon dioxide compared with separate production of electricity and synthetic liquid fuels.
1. A combined method for the production of electricity and synthetic fuels using gas-turbine and combined-cycle plants, including partial oxidation of hydrocarbon fuel into the compressed air stream, chosen for the high-pressure compressor of a gas turbine installation with subsequent doumanian, obtaining synthesis gas, cooling and environmental clean-up, characterized in that the synthesis gas is fed in a single-pass reactor is of NASA with partial conversion of synthesis gas into synthetic fuel, remaining in the reactor power gas output in the combustion chamber of a gas turbine, the degree of conversion of the synthesis gas is chosen from the condition of maintaining the set temperature of the working fluid at the inlet to the gas turbine is determined by the type of gas turbine used for power generation.
2. The method according to claim 1, characterized in that subsequent digimania air, chosen for the high-pressure compressor of the gas turbine installation is carried out using an expander driven energy gas, heated by cooling the synthesis gas before the synthesis reactor.
FIELD: alternate fuel manufacture catalysts.
SUBSTANCE: invention relates to generation of synthesis gas employed in large-scale chemical processes such as synthesis of ammonia, methanol, higher alcohols and aldehydes, in Fischer-Tropsch process, and the like, as reducing gas in ferrous and nonferrous metallurgy, metalworking, and on gas emission detoxification plants. Synthesis gas is obtained via catalytic conversion of mixture containing hydrocarbon or hydrocarbon mixture and oxygen-containing component. Catalyst is a complex composite containing mixed oxide, simple oxide, transition and/or precious element. Catalyst comprises metal-based carrier representing either layered ceramics-metal material containing nonporous or low-porosity oxide coating, ratio of thickness of metallic base to that of above-mentioned oxide coating ranging from 10:1 to 1:5, or ceramics-metal material containing nonporous or low-porosity oxide coating and high-porosity oxide layer, ratio of thickness of metallic base to that of nonporous or low-porosity oxide coating ranging from 10:1 to 1:5 and ratio of metallic base thickness to that of high-porosity oxide layer from 1:10 to 1:5. Catalyst is prepared by applying active components onto carrier followed by drying and calcination.
EFFECT: increased heat resistance and efficiency of catalyst at short contact thereof with reaction mixture.
13 cl, 2 tbl, 17 ex
FIELD: autothermal catalytic reforming of hydrocarbon feed stream.
SUBSTANCE: method relates to method for reforming of hydrocarbon feed stream with water steam at elevated temperature to produce gas enriched with hydrogen and/or carbon oxide. Hydrocarbon stream is passed through water steam reforming catalyst bed wherein oxygen is fed through oxygen-permeable membrane followed by removing of finished product from this bed. Said catalyst bed contains in input region catalyst with reduced or without water steam reforming activity, but having hydrocarbon feed oxidation activity.
EFFECT: process with improved characteristics due to temperature controlling in reactor.
3 cl, 1 dwg