The method of producing ammonia

 

(57) Abstract:

The method of producing ammonia from hydrocarbons, water vapor, air, includes compression and purification of raw materials from sulfur compounds, steam and air-steam catalytic conversion of methane, the conversion of carbon monoxide, treatment received nitric mixture of oxygenated compounds, compression, synthesis of ammonia in a closed loop, where the original air, nitrogen fertilizer is added and this mixture is sent to a steam-catalytic conversion of methane, the ratio of added nitrogen and air is 0.001 to 1,121. The technical result is to reduce specific consumption of hydrocarbons.

The invention relates to the production of ammonia and can be used in the chemical industry.

A method of obtaining ammonia from hydrocarbons, water vapor, air, oxygen, including cleaning of the raw material from sulfur compounds, processoriomodule catalytic conversion of methane in the mine Converter, the conversion of carbon monoxide, treatment received nitric mixture of oxygenated compounds, compression, synthesis of ammonia in a closed loop is izkuyu to the technical essence and the achieved result to the described invention is a method of producing ammonia from a hydrocarbon feedstock, water vapor, air, including compression and purification of raw materials from sulfur compounds, steam and air-steam catalytic conversion of methane, the conversion of carbon monoxide, treatment received nitric mixture of oxygenated compounds, compression and synthesis of ammonia in a closed loop [2].

This method is characterized by high specific consumption of hydrocarbons due to the feed vapor conversion of methane by oxygen amount greater than required. Oxygen binds with hydrogen and is then output from the system in the form of water. Less feeding oxygen because the quantity supplied to a steam-methane conversion of oxygen depends on the stoichiometric ratio between the main components of the gas mixture, which should be (N2+CO)/N2=3,0...3.04 from.

The objective of the invention is the reduction of specific consumption of hydrocarbons.

This object is achieved in that in the method of producing ammonia from hydrocarbons, water vapor air, including compression and purification of raw materials from sulfur compounds, steam and air-steam catalytic conversion of methane conversion oxide is ntes ammonia in a closed loop, according to the invention to air, nitrogen fertilizer is added and this mixture is sent to a steam-catalytic conversion of methane.

The amount of added nitrogen is equal to 0.001-1,121 from the amount of air directed to the vapor catalytic conversion of methane.

The invention is illustrated by the following examples.

Example 1.

Power unit 57,95 t/h Ammonia is produced from hydrocarbons, water vapor and air is withdrawn from the atmosphere and cleaned from dust, which komprimiert, clean raw materials from sulfur compounds on the catalyst at a temperature of 400oTo conduct steam at a temperature of 760-825oWith and vapor catalytic conversion of methane at the temperature at the outlet 990-1002oC, treatment received nitric mixture of oxygenated compounds, komprimiert and carry out the synthesis of ammonia in a closed loop. To the air in quantities 50375 nm3/h add 50,37 nm3/h of nitrogen (0,001 from the air) and this mixture is sent to a steam-catalytic conversion of methane. Specific consumption of hydrocarbons is reduced by is 0.0002% (calculated using equation katipamula transition [3]).

Primatesta 20653,75 nm3/h add 23152,8 nm3/h of nitrogen (1,121 from the air) and this mixture is sent to a steam-catalytic conversion of methane. Specific consumption of hydrocarbons is reduced by 5.7% (calculation determined using equation katipamula transition [3]).

When the amount of air 20653,75 nm3/h heat resulting from the exothermic reactions is equal to the amount of heat consumed by the endothermic reactions during the steam-methane conversion, i.e. the increase in the amount of nitrogen above the specified limits is impractical.

The given examples show that when using a mixture of air with nitrogen in the vapor phase catalytic conversion decreases the flow rate of the hydrocarbon by more than 5%, which for large volumes of raw materials provides a significant positive result.

The examples show that outside the designated boundaries of 0.001-1,121 to achieve tangible economic effect cannot. When the value is less than about 0.001, the effect is small due to values approaching zero, but values higher than 1,121, it will be impossible to vapor catalytic conversion of methane, so as not to be missed heat n, S. 95-98, 211, 366.

2. Directory of apothica. - M.: Chemistry, 1986, S. 83-85, 213, 222, 360-364.

3. The Leites, I. L., Sosna, M. H., B. N. Semenov Theory and practice of chemical technologies. - M.: Chemistry, 1988, S. 165 and 166.

The method of producing ammonia from hydrocarbons, water vapor, air, including compression and purification of raw materials from sulfur compounds, steam and air-steam catalytic conversion of methane, the conversion of carbon monoxide, treatment received nitric mixture of oxygenated compounds, compression and synthesis of ammonia in a closed loop, wherein the air nitrogen fertilizer is added in the amount necessary to obtain a mixture with a ratio of nitrogen: air= 0,001-1,121 and this mixture is sent to a steam-catalytic conversion of methane.

 

Same patents:

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 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 the field of chemistry, and in particular to methods of decomposition of hydrogen sulfide, and can be used for the production of hydrogen and sulfur from hydrogen sulfide, and also for purification from hydrogen sulfide industrial gas emissions

The invention relates to a catalytic method implementing the reaction of steam reforming of ethanol in order to obtain a synthesis gas or enriched hydrogen gas mixture, which can be used in various industries, including hydrogen energy, for example, as fuel for fuel cells

The invention relates to the petrochemical industry, in particular to obtain a distillate fractions

The invention relates to methods of producing synthesis gas for ammonia production

The invention relates to a process for the catalytic purification of hydrogen-containing gas mixtures of carbon monoxide and can be used in various fields of chemical industry, for example in the production of ammonia, and hydrogen energy, in particular, as a fuel for fuel cells

The invention relates to chemical technology, namely reactors for processing hydrocarbon gases and can be used in devices for production of synthesis gas for further use in methanol synthesis, Fischer-Tropsch, fuel cells, heating and hot water systems for generating heat

The invention relates to a system and a method for converting hydrocarbon gas in the reformed gas containing hydrogen and carbon monoxide

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

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

Up!