Integrated energy-technological processing of hydrocarbon fuel gases

 

The invention relates to the technology of complex processing of hydrocarbon fuel gases, such as methane and other natural gases, to obtain a synthesized substances. The method includes processing of hydrocarbon gases in the energy-technological complex, which integrates the use of fuel gases to produce electricity and thermal energy, accompanied by the formation of carbon dioxide and the production of urea and deuterium, thus resulting in energy-technological complex of hydrogen aims at the extraction of deuterium and carbon dioxide is directed to the synthesis of urea with the exception of emissions of carbon dioxide into the atmosphere. The invention allows to achieve the technical result consists in the creation of energy-technological complex, which combines the technological processes of production of hydrocarbon gases not only energy, but also urea and deuterium with the exception of emissions of carbon dioxide. 2 C.p. f-crystals, 1 Il.

The invention relates to the technology of complex processing of hydrocarbon fuel gases, such as methane and other natural gases to obtain a synthesized vegetarienne oxide catalysts. Urea receive in the gas-vapor phase in the atmosphere of nitrogen. As heterogeneous oxide catalyst using a highly porous Nickel metal or shavings from chromium-Nickel steel 12X18H10T or HIT or catalysts based on alumina composition, wt.%: NiO 8-20; CaO 10-40; Al2O3the rest is up to 100% or Cao 1-10; NGO312 - 20; Al2O3the rest is up to 100%. The process is carried out at 100-400oWith the pressure 1-70 kg/cm2and duration of contact of 0.2-1.0 /see RF patent 2078762, C 07 C 273/04, 1997/.

As the closest analogue adopted by the installation of combined cycle for production of synthetic gas, which includes the following techniques: a hydrocarbon fuel, oxygen and water vapor is partially burned in a combustion chamber to produce high temperature and ensure conditions for the reaction of the rest of the mixture. The products of combustion and reactions after passage through the turbine and then through the heat exchanger, where they are provided with water vapor, is passed through a condenser to remove the liquid components. The remaining gases are passed through a compressor and a refrigerator to produce hydrogen and carbon monoxide, which reacts in the process reactor and result in a useful angle which is the inability of complex processing of hydrocarbon fuel gas and receiving urea and deuterium with the exception of emissions of carbon dioxide.

The essence of the invention.

Integrated energy-technological processing of hydrocarbon fuel gas is that hydrocarbon fuel gas is subjected to adiabatic expansion in the expanders unit 2 and serves in the process unit 5 conversion with getting heated carbon monoxide and hydrogen and feeding them into the waste-heat boiler 6 heat generation therein of high-pressure steam, which is then applied to the block 41 turboelectric and cooled gases szhizhajut and share in block 9 with their separate collection in stores 10 liquefied carbon dioxide, 11 liquefied hydrogen and 14 sizenew helium and other gases, then of liquefied hydrogen in the processing block 12 produce deuterium and placed in vault 13, at the same time carry out the liquefaction of air and split it in block 16 on liquefied components that focus in storage 17 liquefied argon, liquefied 18 nitrogen and 19 of liquefied oxygen, while the portion of the liquid oxygen from the storage 19 serves in the process unit 5 conversion of hydrocarbon fuel gas, and liquid hydrogen is supplied from the storage 11 under pressure through the recuperative heat exchanger 23 in block 24 synthesis of ammonia, which p in block 29 of the synthesis of urea, where you direct carbon dioxide, which is produced in a liquefied state in the boiler steam generator 33 as a result of chemical interaction in it between the carbon monoxide coming from the storage 10, and the oxygen storage 19, with carbon monoxide and oxygen is supplied to the boiler-steam under pressure, providing liquefaction get it of carbon dioxide produced in the boiler steam generator 33 high pressure water vapor is sent to the unit 41 for generating electric and thermal energy, and the resulting urea from the intermediate store 38 is sent to the process unit 39.

As a hydrocarbon fuel gas using methane.

Deuterium is placed in a vault in the form of heavy water.

The invention allows to achieve the technical result consists in the following: the creation of energy-technological complex, which combines the technological processes of production of hydrocarbon gases not only energy, but also urea and deuterium with the exception of emissions of carbon dioxide can significantly improve the economic efficiency of use of natural gas; improve environmental safety by eliminating semati energy-technological complex within residential areas of cities.

The invention is illustrated in the drawing, which shows a process diagram illustrating the proposed method.

Shown in the drawing, the circuit technology of complex energy-technological processing of hydrocarbon fuel gases contains the following main parts: 1 - the pipe feeding the hydrocarbon fuel gas (such as methane and/or associated gas during oil production and others) under arterial pressure; 2 - block adiabatic expansion of hydrocarbon fuel gas turbo-expanders with electricity generation and "cold"; 3 - line output gas from low pressure up to ~1-2 ATM; 4 - line circulation of coolant; 5 - unit high-temperature conversion of methane to form carbon monoxide and hydrogen; 6 - boiler-heat exchanger; 7 - line steam supply to the turbine; 8 - line output of the cooled gases; 9 - block liquefaction and separation of gases; 10 storage of liquefied carbon dioxide; 11 storage of liquefied hydrogen; 12 - block allocation of liquefied hydrogen deuterium; 13 - store deuterium, for example, in the form of heavy water; 14 storage of liquefied helium and other gases evolved from the original; 15 - air supply; 16 - block liquefaction and separation of air into components; 17 store the spent oxygen; 20 - pump liquid oxygen to the conversion unit 5 source gas; 21 - regenerative heat exchanger; 22 - thermo-mechanical compressor; 23 - regenerative heat exchanger; 24 - block for the synthesis of ammonia; 25 - thermo-mechanical compressor for liquid nitrogen; 26 - regenerative heat exchanger; 27 storage of liquefied ammonia; 28 - thermocompressor of liquefied ammonia; 29 - block synthesis of urea; 30 - pump liquefied carbon dioxide in boiler-steam generator; 31 - regenerative heat exchanger; a 32 - line filing of carbon monoxide in the boiler-steam generator; 33 - boiler-steam generator; 34 - thermocompressor of liquefied carbon dioxide in the block 29 synthesis of urea; 35 - pump liquefied oxygen; 36 - regenerative heat exchanger; a 37 - line oxygen in boiler-steam generator 33; 38 - preliminary storage of urea; 39 - unit commercial preparation of urea on the technical conditions of its particular consumers; 40 - line steam output from the boiler of the steam generator 33; 41 - unit turboelectrogenerator; 42 distribution the distribution of electricity and thermal energy, and 43 is a conventional dispensing line commodity urea consumers.

Boiler steam generator 33 is characterized by the complete removal of products of combustion toomany panel of the boiler of the steam generator is performed with capillary channels for gas fuel and oxidant, as well as water and output pair. When this heat exchange panel and between them a zone of burning gaseous fuel is placed in the hermetically sealed casing of the boiler of the steam generator under pressure, ensuring the liquefaction products of combustion of fuel and is equipped with nozzles for output of liquefied products of combustion. Such heat exchange panel may be used in the recovery boiler 6.

Technical result achieved by using the specified boiler of the steam generator is to improve technical and economic performance by reducing by several orders of magnitude, the overall dimensions of the boiler-a steam generator with a corresponding increase its power density, as well as in obtaining liquefied carbon dioxide as a commercial product, excluding its release into the atmosphere as a factor in the greenhouse effect.

The work of energy-technological complex processing of hydrocarbon fuel gases is as follows.

The source of hydrocarbon fuel gas (methane and associated gases at oil and others) are in block 2 adiabatic expansion expanders (implying a certain amount of electricity, as well as "cold" that is passed by line 4). Gas from positioned carbon coming into the boiler 6 heat. The resulting high-pressure steam (above 100 ATM) in line 7 is sent to the block turboelectric 41. The cooled gases through line 8 is sent to the block 9, which performs the liquefaction and separation of the composition. In the liquefied carbon dioxide is sent to the storage 10, liquefied hydrogen in the storage 11, and other gases, in particular helium, in the storage 14. Liquefied hydrogen from unit 9 serves to block 12 for isotope selection of deuterium with its subsequent placement in the storage 13, for example, in the form of heavy water.

The air supply is carried out by the line 15 in block 16, where it szhizhajut and shared by components, while argon and other rare gases are directed to the storage 17, the liquefied nitrogen in the storage 18, and liquid oxygen in the storage 19. From the vault 11 liquid hydrogen using thermocompressor 22 under high pressure (over 100 ATM) through a recuperative heat exchanger 23 serves to block 24 synthesis of ammonia. Simultaneously, in block 24 serves nitrogen from the storage 18 with thermocompressor 25 through the recuperative heat exchanger 26. The formed ammonia is collected in the storage 27 and thermocompression 28 it is served under the high pressure block 29 synthesis of urea. in which the use of the method for the synthesis of urea carbon dioxide under high pressure (over 100 ATM) using thermocompressor 34 serves in block 29 of the boiler of the steam generator 33. The boiler is a steam generator 33 is provided by feeding it under pressure of carbon monoxide on line 32, and a supply line 37 of oxygen under pressure from the storage 19 by a pump 35 through a recuperative heat exchanger 36. High-pressure steam from the boiler of the steam generator 33 through line 40 serves to block 41 turboelectrogenerator with further issuance of electrical and/or thermal energy to consumers.

From the preliminary storage 38 urea is sent to the block 39 for the preparation of technical conditions of specific consumers.

Claims

1. Integrated energy-technological processing of hydrocarbon fuel gas, wherein the hydrocarbon fuel gas is subjected to adiabatic expansion in the expanders unit 2 and serves in the process unit 5 conversion with getting heated carbon monoxide and hydrogen and feeding them into the waste-heat boiler 6 heat generation therein of high-pressure steam, which is then applied to the block 41 turboelectric and cooled gases szhizhajut and share in block 9 with their separate collection in stores 10 liquefied carbon dioxide, 11 liquefied hydrogen and 14 liquefied helium and other gasoline carry out the liquefaction of air and split it in block 16 on liquefied components, which focus in storage 17 liquefied argon, liquefied 18 nitrogen and 19 of liquefied oxygen, while the portion of the liquid oxygen from the storage 19 serves in the process unit 5 conversion of hydrocarbon fuel gas, and liquid hydrogen is supplied from the storage 11 under pressure through the recuperative heat exchanger 23 in block 24 synthesis of ammonia, which simultaneously serves nitrogen from the storage 18, the resulting ammonia is placed in the storage 27, from which the ammonia serves under pressure block 29 synthesis of urea, which direct carbon dioxide, which is produced in a liquefied state in the boiler steam generator 33 as a result of chemical interaction in it between the carbon monoxide coming from the storage 10, and the oxygen storage 19, with carbon monoxide and oxygen is supplied to the boiler-steam under pressure, providing liquefaction get it of carbon dioxide produced in the boiler steam generator 33 high pressure water vapor is sent to the unit 41 for generating electric and thermal energy, and the resulting urea from the intermediate store 38 is sent to the process unit 39.

2. The method according to p. 1, characterized in that the hydrocarbon fuel gas used

 

Same patents:

The invention relates to a method for joint production of ammonia and urea on the plant includes a reactor for the synthesis of ammonia synthesis reactor urea and the regeneration section of the urea

The invention relates to a method for producing urea by the interaction of ammonia with carbon dioxide in two reaction zones operating in parallel

The invention relates to equipment carrying out processes in gas-liquid environments and can be used for the synthesis of urea from ammonia and carbon dioxide at elevated temperatures and pressures

The invention relates to the synthesis of urea from ammonia and carbon dioxide

The invention relates to improvements in the technology of production of urea from ammonia and carbon dioxide

The invention relates to a reactor for two-phase reactions, in particular for the synthesis of urea at high pressure and temperature, as well as ways of its modernization

The invention relates to a method for producing urea

The invention relates to the production of ammonia by the catalytic conversion of ammonia synthesis gas

The invention relates to a catalyst for the synthesis of ammonia from hydrogen and nitrogen

The invention relates to a method for joint production of ammonia and urea on the plant includes a reactor for the synthesis of ammonia synthesis reactor urea and the regeneration section of the urea
The invention relates to processes of chemical technology, and in particular to methods of production of ammonia

The invention relates to a method and installation for the combined production of ammonia and methanol, as well as to upgrade the installation of the ammonia synthesis to ensure such co-production

The invention relates to a method for production of ammonia from synthesis gas and Converter for its implementation
The invention relates to the production of ammonia by the catalytic conversion of synthesis gas
The invention relates to the production of ammonia and can be used in the chemical industry

The invention relates to a process for the preparation of natural gas for ammonia production

The invention relates to methods of co-production of ammonia and methanol

The invention relates to the field of technology of hydrogen and its isotopes from waste gases continuously operating plants, for example, installations of low-temperature fusion, or cells, and can be used for regeneration of gaseous mixtures contaminated with hydrogen and, in some cases, the oxygen present in concentrations that may education as oxygen mixture, and with atmospheric oxygen explosive mixtures
Up!