175results about "Hydrogen separation using liquid contact" patented technology

The present application relates to hydrogen production technology field, especially to a kind of methanol hydrogen production method, comprising the following steps: S10: methanol water is heated and vaporized to obtain methanol water vapor;S20: methanol reforming reaction obtains hydrogen mixture gas;S30: after cooling treatment to hydrogen mixture gas, through water washing tower absorption unreacted methanol water, then, adjust the relative humidity and temperature of hydrogen mixture gas;S40: hydrogen mixture gas is input into carbon dioxide absorption tower to remove carbon dioxide;S50: after removing carbon dioxide, product hydrogen is obtained and input hydrogen tank storage to supply user end.The above-mentioned methanol hydrogen production method, by methanol water vapor reforming hydrogen treatment, obtains hydrogen mixture gas.Again, hydrogen mixture gas is purified to obtain product hydrogen with very low carbon monoxide content, with raw material easy to transport, the hydrogen purity of output is high, equipment construction cost is low, and energy consumption is low and the like advantages, reach the purpose of expanding hydrogen application range.

A hydrocarbon stream is combusted within a reactor to produce soot and syngas. Sub-stoichiometric combustion of the hydrocarbon stream within the reactor converts at least 10% of the carbon in the hydrocarbon stream into soot. The syngas is mixed with a steam stream to produce a hydrogenation feed stream. A shift reactor converts at least a portion of the carbon monoxide and steam to carbon dioxide and hydrogen to produce a shifted gas stream. Water is separated from the shifted gas stream to produce a dehydrated gas stream. The dehydrated gas stream is separated to produce a hydrogen product stream and a recycle stream. The recycle stream is recycled to the reactor.

A process for the production of hydrogen comprises: a first steam reforming step of a feedstock containing hydrocarbons to obtain a first synthesis gas; a first synthesis gas shift and cooling step on the first synthesis gas; a separation step for separating the first synthesis gas into a high concentration hydrogen stream and a tail gas stream; a second low pressure steam reforming step performed on the tail gas to obtain a second synthesis gas; a second synthesis gas shift and cooling step on the second synthesis gas; a CO2 removal step performed on the stream of hydrogen and carbon dioxide exiting the second synthesis gas shift and cooling step in order to separate a CO2 stream from a fuel grade hydrogen stream; a step of feeding at least a part of the fuel grade hydrogen stream to the first steam reforming step.

The present invention relates to a process for treating a stream comprising CO2 and H2, the process comprising (i) preparing a stream comprising CO2 and H2; (ii) treating the stream prepared in (i) with one or more liquid amine-containing streams, obtaining a gaseous H2-containing stream and a liquid CO2-loaded amine-containing stream; (iii) expanding the liquid CO2-loaded amine-containing stream, obtaining one or more gaseous CO2-containing streams and a liquid CO2-reduced amine-containing stream; (iv) optionally dividing the liquid CO2-reduced amine-containing stream into a first liquid CO2-reduced amine-containing stream and a second liquid CO2-reduced amine-containing stream; (v) stripping CO2 from the liquid CO2-reduced amine-containing stream obtained from (iii) or from the first liquid CO2-reduced amine-containing stream obtained from (iv), obtaining a liquid CO2-depleted amine-containing stream and a gaseous CO2-containing stream; (vi) preparing a liquid H2O-containing stream; (vii) transferring heat from the liquid CO2-depleted amine-containing stream to the liquid H2O-containing stream, obtaining a cooled amine-containing stream and a heated H2O-containing stream; (viii) expanding the heated H2O-containing stream, obtaining a gaseous H2O-containing stream and a liquid H2O-containing stream; (ix) recycling at least a part of the liquid H2O-containing stream into the H2O-containing stream prepared in (vi).

A method comprising partially condensing and separating a feed stream comprising helium and hydrogen to produce a first medium-pressure vapor stream and a first medium-pressure liquid stream; reducing the pressure of the first medium-pressure liquid stream or a stream derived from the first medium-pressure liquid stream to produce a low-pressure vapor stream and a low-pressure liquid stream; cooling the first medium-pressure vapor stream by indirect heat exchange against the low-pressure liquid stream to produce a first partially condensed medium-pressure stream; and separating the first partially condensed medium-pressure stream to produce a second medium-pressure vapor stream and a second medium-pressure liquid stream.

There are provided systems and methods for using fuel rich partial oxidation to produce an end product from waste gases, such as flare gas. Lambda sensor modifications and other control parameters that provide closed-loop mixture control at extremely fuel-rich operating conditions utilizing feed-forward and feedback approaches, physics-based engine models, novel use of a lambda sensor (02-based sensor), sensors with intermittent contact with the gas stream. In an embodiment the system and method use air-breathing engines having control systems, control parameters, sensors and input / output (I / O) for the fuel rich (ER of 1.2 and greater), partial oxidation of the flare gas to form syngas. In embodiments the syngas is further converted into an end product. In an embodiment the end product is methanol.

The present application relates to a process for producing synthetic ammonia by using hydrogen-containing tail gas, comprising the following steps: S1: sodium cyanide tail gas is pressurized, then heated and water-cooled. S2: the impurity-removed tail gas is desulfurized. S3: the desulfurized tail gas is mixed with chlor-alkali tail gas, the mixed gas is heated and deoxidized. S4: the deoxidized tail gas is pressurized and enters a PSA (pressure swing adsorption) device for pressure swing adsorption treatment, obtaining high-purity hydrogen. In the PSA device, dehydrating, carbon dioxide, methane, carbon monoxide and nitrogen adsorbents are sequentially arranged. The carbon dioxide adsorbent is activated carbon modified by carbonate and strong alkali, and the nitrogen adsorbent is 13X zeolite molecular sieve modified by Na + and Ba 2+ and Ca 2+ ion exchange. S5: nitrogen reacts with the high-purity hydrogen obtained in step S4 to generate ammonia. The present application can improve the adsorption capacity of the adsorbent for impurity gas, thereby reducing the replacement frequency of the adsorbent, prolonging the service period and service life of the adsorbent, and improving the production efficiency.

A method and apparatus is provided for producing hydrogen in an steam methane reformer (SMR) via ammonia cracking, wherein the SMR can include a furnace (50), a pressure swing adsorption (PSA) unit, waste heat recovery sections (10, 90), and a water scrubber, wherein the furnace (50) has a plurality of SMR tubes and a plurality7 of burners. The method can include the steps of: withdrawing ammonia from an ammonia storage vessel; preheating the ammonia to form a warm ammonia stream; introducing the warm ammonia stream into the SMR tubes of the furnace (50) under conditions effective for catalytically cracking the ammonia, thereby forming a crude stream (53) comprising hydrogen, nitrogen, and unreacted ammonia; treating the crude stream (53) with a water wash in order to remove the unreacted ammonia from the crude stream (53), thereby resulting in an aqueous ammonia stream and a washed crude stream (103); and introducing the washed crude stream (103) into the PSA unit to produce a hydrogen product stream and a PSA off-gas.

The utility model provides a water electrolysis product gas cleaning device and a water electrolysis system, and relates to the field of hydrogen production through water electrolysis. The water electrolysis product gas cleaning device comprises a separation tank and a mixing assembly, the mixing assembly is used for receiving to-be-cleaned product gas and fresh make-up water, the mixing assembly is used for mixing the to-be-cleaned product gas and the fresh make-up water to form a mixture, the mixing assembly communicates with the separation tank through a first channel, and the first channel is used for guiding the mixture into the separation tank; and the separation tank is used for separating clean product gas from the mixture. The mixing assembly is used for replacing filler in a traditional separation tank, the requirement for the large operation range of coupling of an electrolytic bath and renewable energy sources can be met, meanwhile, the mixing assembly is arranged outside the separation tank, filler does not need to be arranged in the separation tank, and therefore the overall height of the cleaning device for the water electrolysis product gas is reduced, and the cleaning device adapts to the low height limit requirement; and the application range is wider.

A hydrogen feed stream comprising one or more impurities selected from the group consisting of nitrogen, argon, methane, carbon monoxide, carbon dioxide, oxygen, and water, is purified using a cryogenic temperature swing adsorption (CTSA) process with high overall recovery of hydrogen. The waste gas from regenerating the CTSA may be used to improve the performance of upstream hydrogen processing steps.

The invention provides an apparatus and method for producing a hydrogen rich gas, the method comprising the steps of reforming a hydrocarbon feed in an autothermal reformer to obtain a synthesis gas; shifting the synthesis gas in a shift configuration comprising a high temperature shift step; removing CO2 in a CO2 removal section by amine washing to form a hydrogen rich stream, wherein a portion is used as a low carbon hydrogen fuel; and forming a CO2 rich gas stream and a high pressure flash gas stream. The high pressure flash gas stream is advantageously integrated into the apparatus and method to further improve carbon capture.

The present invention relates to a process for removing carbon dioxide from a synthesis gas having at least hydrogen and carbon dioxide in which the synthesis gas is at least partially freed of carbon dioxide in an absorption apparatus by physical absorption at elevated absorption pressure. The carbon dioxide is subsequently desorbed by pressure reduction relative to the absorption pressure in a plurality of serially arranged flash stages and an at least partially regenerated absorption medium is withdrawn from the last of the plurality of serially arranged flash stages, recompressed to absorption pressure and recycled into the absorption apparatus for use as absorption medium. It is also provided according to the invention that a partially regenerated absorption medium from a flash stage upstream of the last of the plurality of serially arranged flash stages is recompressed to absorption pressure and recycled into the absorption apparatus for use as absorption medium.

The subject of this invention is the system for generation and use of hydrogen in which a subsystem for hydrogen generation (U1) contains a reaction chamber (1) with aluminium (2) and sodium hydroxide (3), to which a water nozzle (4) is attached, connected through a duct (5) to a water pump (6). The upper part of the reaction chamber (1) contains an outlet connection (7) connected to a subsystem for hydrogen purification (U2), which is connected to the subsystem for hydrogen oxidation (U3), to which an inlet (27) through oxygen is supplied, is connected. This system is characterised in that the subsystem for hydrogen purification (U2) contains at least one water tank (9) connected to the subsystem for hydrogen oxidation (U3), which outlet (21) is connected through a non-return valve (22) with the condensing tank (23).

A method of separating and reusing unconverted ammonia from cracked ammonia gas provided by an ammonia cracking unit is provided. The method includes introducing a cracked ammonia gas stream into a water wash column, thereby producing a clean gas stream and a water-containing effluent stream and introducing the water-containing effluent stream into a stripping column, thereby producing a cleaned wash water stream and a recovered ammonia stream. Wherein the cracked ammonia gas stream has an ammonia concentration of between 0.003 mol % and 10 mol %. Wherein the clean gas stream has an ammonia concentration of between 1 ppm and 2500 ppm. And wherein at least a portion of the recovered ammonia stream is used as fuel within the ammonia cracking unit.

The invention discloses a high-efficiency low-energy-consumption solvent for removing organic sulfur in gas as well as a preparation method and application of the high-efficiency low-energy-consumption solvent, and belongs to the technical field of gas purification. The solvent is formed by compounding a physical absorption organic solvent, a chemical absorption alcohol amine solution and a nitrogen-doped activated carbon catalyst nanofluid. The nitrogen-doped activated carbon catalyst is prepared by taking coconut shell or shell activated carbon as a raw material, mixing the coconut shell or shell activated carbon with a high-content nitrogen compound, pickling, drying, grinding and calcining by a specific procedure, and the surface of the nitrogen-doped activated carbon catalyst is rich in nitrogen-containing functional groups. When the catalyst is dispersed in an alcohol amine-organic solvent mixed system, a stable carbon nanofluid can be formed, and the heat transfer and mass transfer performance of the system can be remarkably improved. The solvent integrates the advantages of physical absorption and chemical absorption, and shows high absorption capacity and rate in the desulfurization process by virtue of the synergistic effect of the nanofluid; in the regeneration process, the heat and mass transfer efficiency is improved, so that the energy consumption is obviously reduced, and the method is particularly suitable for treating industrial gas containing organic sulfur.

The invention discloses a process and system for separating and purifying hydrogen in sulfur-iodine circulating hydrogen production, and relates to the technical field of sulfur-iodine circulating hydrogen production, and the process comprises hydrogen iodide gas preheating, hydrogen iodide gas decomposition, gas heat recovery and cooling, pressurized separation, cryogenic separation, spraying absorption, and completion of hydrogen separation and purification. Multi-stage heat energy recovery is adopted, and the total energy consumption of the system is greatly reduced; complete recovery of the materials is achieved; hydrogen iodide liquefaction is assisted in a pressurization and copious cooling combined mode, energy consumption is greatly reduced, pressurization is generally needed when hydrogen is applied downstream, the hydrogen is pressurized in advance during separation and purification, and energy consumption needed by follow-up pressurization is reduced; materials except water are not added, so that impurities are avoided; and the undecomposed hydrogen iodide is circularly limited in the hydrogen separation process, so that the circulating energy consumption of other units of the system is reduced.

To provide systems and methods for processing gases.SOLUTION: The present invention provides a system for transforming a hydrocarbon-containing inflow gas into outflow gas products, where the system includes specified components.SELECTED DRAWING: None

Processes are disclosed for the gasification of carbonaceous feeds and preferably biomass, which can implement one or more strategies for removing contaminants, particularly chlorides and ammonia, with reduced negative impacts on overall processing objectives. These objectives can include obtaining a syngas product, with sufficient purity and hydrogen content or H2:CO molar ratio, that favor downstream conversion and / or separation operations as needed to generate value-added products (e.g., hydrocarbons, alcohols such as methanol, RNG, or renewable, purified hydrogen). According to certain aspects, heat and / or material integration of (i) contaminant removal with (ii) other operations of the gasification process can lead to further efficiencies. Metallurgical requirements over conventional processes may be reduced.

The application discloses a recycling method of condensate of ammonia shift stripping tower, comprising the following steps: S1 condensate cooling: hot condensate with a temperature of 80-100 DEG C is led out from the lower part of the ammonia shift stripping tower; S2 split delivery: the cooled condensate is divided into two routes by a condensate pump: the first route is sent to a synthetic gas washing tower to replace fresh desalted water for cooling and demisting of the synthetic gas, and fresh water consumption is reduced; the second route is sent to a carbonization mother liquor tank; S3 ammonia absorption concentration: the ammonia absorption pump is used to deliver the ammonia absorption mother liquor in the carbonization mother liquor tank to a high ammonia absorber; S4 concentrated ammonia water cooling: the concentrated ammonia water after concentration is sent into an air-cooled heat exchanger; S5 carbonization reaction product: ammonia in the concentrated ammonia water reacts with carbon dioxide to generate ammonium bicarbonate crystals, and ammonium bicarbonate products are obtained after separation and drying. The whole recycling process can be directly connected with the existing ammonia production system, the existing equipment does not need large-scale modification, the investment cost is low, and the industrialization popularization is easy.

The invention provides a solid steel slag hydrogen production method and hydrogen production equipment based on a water-rock reaction principle, and relates to the technical field of hydrogen energy, and the method comprises the following steps: screening and pretreating a steel slag raw material: selecting smelting furnace steel slag as a reaction raw material, and screening out a component rich in Fe < 2 + > by adopting a magnetic separation mode; crushing the screened steel slag, and then putting the crushed steel slag into a reaction furnace; controlling the reaction process and generating hydrogen: enabling argon to carry the water vapor treated by the gas washing device to form an Ar-H2O mixed gas, enabling the Ar-H2O mixed gas to enter a reaction furnace, raising the temperature in the reaction furnace to 700 DEG C through a heating device, and performing hydrothermal reaction on the steel slag and the water vapor under the condition to generate hydrogen; and collecting hydrogen. The method not only has certain environmental protection benefits, but also has better economic and technical feasibility, and is an important technology for realizing low-carbon transformation and energy structure optimization in the iron and steel industry.

The invention relates to the technical field of industrial gas purification, and discloses a four-in-one integrated post-treatment device suitable for water electrolysis hydrogen production, the four-in-one integrated post-treatment device comprises a device shell, an inner cavity of the device shell is divided into a left cavity and a right cavity, an upper partition plate is installed on the upper side of the left cavity, a cyclone separator is installed on the lower portion of the upper partition plate, and a water inlet is formed in the lower portion of the upper partition plate; a center exhaust pipe and a gravity settling exhaust pipe are installed on the upper partition plate in a penetrating mode, the upper end of the center exhaust pipe and the upper end of the gravity settling exhaust pipe are jointly connected with a main pipe, the other end of the main pipe extends into the right cavity and is connected with a cooling coil, and the cooling coil is completely arranged in the cooling water cavity. And the lower end of the cooling coil extends to the bottom of the cooling water cavity and is opened to form a bubble release port. According to the invention, a gas-liquid separator, a washer, a cooler and a final gas-water separator which are mutually independent in the traditional process flow are organically integrated in one device through structural innovation and process reconstruction by utilizing the similarity of working principles of the gas-liquid separator, the washer, the cooler and the final gas-water separator, so that a plurality of treatment steps are continuously and efficiently carried out.

The application discloses a kind of high flash gas multi-element recycling device and method, belong to synthetic ammonia acid gas processing technical field, including hydrogen extraction system, high flash gas sulfur recovery system and high flash gas recovery ammonia system, high flash gas recovery ammonia system is communicated with high flash gas sulfur recovery system, hydrogen extraction system is connected with high flash gas recovery ammonia system.The application uses the above-mentioned one kind of high flash gas multi-element recycling device and method, by the desorption gas compressor of PSA hydrogen extraction device, gasification high flash gas is recovered to shift system, greatly improve the utilization value of high flash gas;By sending part of high flash gas into sulfur recovery device, the natural gas consumption of incinerator can be reduced, and the sulfuric acid production and byproduct steam production are increased;By setting raw material gas heat exchanger, part of purified gas is led to PSA hydrogen extraction device to prepare high-purity hydrogen.

A method comprising generating a first process gas stream in a first plant; generating a process heat utility in a second plant; contacting the first process gas stream with a first solvent to produce a first CO2-depleted process gas stream and a first CO2-enriched solvent; regenerating the first CO2-enriched solvent in a regeneration system to produce a CO2-depleted solvent; wherein the process heat utility provides at least a portion of the heating duty for the regeneration system; wherein the first solvent comprises at least a portion of the CO2-depleted solvent.

Processes for recovering hydrogen and hydrocarbons from a process stream are described. The processes incorporate a membrane separation unit to reject hydrogen preferentially from the net gas and recover the C3+ hydrocarbons from the hydrogen depleted retentate stream from the membrane unit using a retentate absorber. The invention eliminates the need for a large tail gas compressor package, while still achieving the target C3+ recovery of 85-90% or more with a smaller refrigeration package in the net gas section and membrane and retentate absorber equipment. It does not require any additional compressors, resulting in a significant reduction in plot space and power consumption.

The application discloses a system and method for extracting ammonia from solvent regenerator overhead reflux to a deamination tower, and belongs to the technical field of solvent regeneration. The system comprises a solvent regenerator, a deamination tower, a reboiler, a water cooler, a first circulating pump, a second circulating pump and a static mixer. The pipeline connecting the first circulating pump and the water cooler is connected with the pipeline connecting the second circulating pump and the static mixer through an ammonia extraction pipeline. The ammonia collected at the top of the regenerator affects the desulfurization effect of the solvent. In the application, the ammonia water collected at the top of the regenerator is sent to the deamination tower for treatment, so that the ammonia nitrogen and hydrogen sulfide contents in the amine solution after regeneration are reduced, and the amine regeneration effect is ensured. The application of the solvent regenerator overhead reflux ammonia extraction to the deamination tower to a hydrogenation device for removing hydrogen sulfide in circulating hydrogen can solve the common problem of poor desulfurization effect, and can also be applied to other naphthenic base distillate hydrogenation devices of various tonnages.

Gasification processes utilizing carbonaceous feeds and preferably biomass are disclosed, which can implement one or more strategies for valuable integration with process streams generated when converting the syngas product of gasification to more valuable end products, such as biomethanol. For example, these waste stream generally referred to as fusel oil may be recycled to where it can be utilized in the gasification process, such as for the upstream conversion of biomass or other carbonaceous material, providing the syngas that is reacted to form the biomethanol. A particular use of fusel oil is in a tar conversion or tar destruction area that may operate with a partial oxidation (POX) burner as an integral or key part of the overall gasification.

The embodiment of the invention provides a method and a device for synthesizing cellulosic ethanol and co-producing methanol from biomass. The method comprises the following steps: carrying out cellulosic ethanol production treatment on biomass to obtain cellulosic ethanol fermentation residues and refined cellulosic ethanol; carrying out gasification treatment on the cellulosic ethanol fermentation residues to obtain crude synthesis gas; carrying out purification treatment on the crude synthesis gas to obtain purified synthesis gas; performing component modulation treatment on the purified synthesis gas to obtain component-modulated synthesis gas; and carrying out a methanation reaction on the component-modulated synthesis gas to obtain methanol. Through the method, high-purity methanol is directionally prepared while high-value cellulosic ethanol is prepared from biomass.

1. A method for producing liquid hydrocarbons from a synthesis gas, comprising: providing a hydrogen cyanide-containing synthesis gas; splitting the hydrogen cyanide-containing synthesis gas into a first synthesis gas portion and a second synthesis gas portion; passing a mixture of the first synthesis gas portion and steam through a water-gas shift reaction chamber to provide a hydrogen-rich first synthesis gas portion; mixing the hydrogen-rich first synthesis gas portion with the second synthesis gas portion to provide a mixed synthesis gas; passing the mixed synthesis gas through a first hydrolysis reaction chamber to convert at least a portion of the hydrogen cyanide in the mixed synthesis gas to ammonia to provide a first ammonia-rich hydrogen cyanide-depleted synthesis gas; passing the first ammonia-rich hydrogen cyanide-depleted synthesis gas through a first scrubber and contacting the first ammonia-rich hydrogen cyanide-depleted synthesis gas with a first scrubber liquor, whereby at least a portion of the ammonia contained in the first ammonia-rich hydrogen cyanide-depleted synthesis gas is retained in the first scrubber liquor to provide a first ammonia-depleted synthesis gas. forming a hydrogen cyanide-depleted syngas; passing the first ammonia-depleted hydrogen cyanide-depleted syngas through a carbon dioxide removal unit to form a carbon dioxide-depleted syngas; passing the carbon dioxide-depleted syngas through a second hydrolysis reaction chamber to convert at least a portion of the hydrogen cyanide in the carbon dioxide-depleted syngas to ammonia to provide a second ammonia-rich hydrogen cyanide-depleted syngas; passing the second ammonia-rich hydrogen cyanide-depleted syngas through a second scrubber to contact the second ammonia-rich hydrogen cyanide-depleted syngas with a second scrubber liquor, whereby at least a portion of the ammonia contained in the second ammonia-rich hydrogen cyanide-depleted syngas is retained in the second scrubber liquor to form a second ammonia-depleted hydrogen cyanide-depleted syngas; and passing the second ammonia-depleted hydrogen cyanide-depleted syngas through a Fischer-Tropsch reaction chamber to produce a liquid hydrocarbon product.

A petroleum coke processing apparatus, processing method and processing system, the processing apparatus including an activation unit which is a ring furnace reactor, the processing system including a first reactor, the processing apparatus used as a second reactor, a washing and separation unit, a cooling unit, a melting and separation unit, a washing and drying unit, optionally a regeneration unit, optionally a drying and roasting unit, and optionally an evaporative crystallization unit. Also provided is a method for producing carbon materials using the processing system for processing petroleum coke.