90 results about "Water gas" patented technology

A process is described for synthesising hydrocarbons comprising the steps of: (a) feeding a gas mixture comprising hydrogen and carbon dioxide to a reverse water-gas shift unit to form a crude synthesis gas comprising hydrogen, carbon monoxide carbon dioxide and steam, (b) cooling the crude synthesis gas to condense water and removing water, and optionally carbon dioxide, from the crude synthesis gas to produce a feed stream comprising hydrogen and carbon monoxide, (c) passing the feed stream though a hydrocarbon synthesis unit comprising a reactor containing a Fischer-Tropsch catalyst to form a product stream comprising a mixture of liquid hydrocarbons, a co-produced water stream, and a tail gas stream containing hydrogen, carbon monoxide and gaseous hydrocarbons, and (d) upgrading the product stream in an upgrading unit to produce an upgraded product stream, wherein a naphtha stream is separated from the product stream or the upgraded product stream, at least a portion of the tail gas stream is fed with steam to a first derichment vessel containing a derichment catalyst to form a first gas mixture containing methane, at least a portion of the naphtha stream is fed with hydrogen and steam to a second derichment vessel containing a derichment catalyst to form a second gas mixture containing methane, and the first and second gas mixtures containing methane are fed to the reverse water gas shift unit. A system for performing the process is also provided.

The present application relates to the technical field of reverse water gas shift reaction, and discloses a preparation method of a catalyst for reverse water gas shift reaction, comprising the following steps: weighing magnesium nitrate and zinc acetate, so that the molar ratio of Mg atoms to Zn atoms is 1:1 to 1:10 or 3:1 to 10:1; dissolving the weighed magnesium nitrate and zinc acetate in water, adding urea, stirring and uniformly mixing at room temperature, and then increasing the temperature and stirring to promote the co-precipitation of metal ions; and obtaining the MgO-ZnO composite oxide catalyst by centrifugation, washing, drying and calcination of the obtained precipitate. The MgO-ZnO composite oxide catalyst is prepared by adopting the urea uniform precipitation method, using magnesium nitrate and zinc acetate as raw materials, and precisely controlling the molar ratio of Mg to Zn.

The utility model discloses an integrated heat exchanger suitable for frozen drying machine, including the casing, the casing is equipped with the outlet of drying gas, the inlet of water gas, the coolant outlet and the coolant inlet from top to bottom, the upper portion is equipped with the heat exchanger in the casing, still be equipped with the evaporimeter in the casing, still be equipped with the gas liquid separation chamber of gas in the bottom of casing, the evaporimeter is located heat exchanger below and communicates with the heat medium outlet of heat exchanger, the backflow channel of gas is established between evaporimeter and heat exchanger and the inside of casing, and the gas outlet of evaporimeter and the cold medium inlet of heat exchanger communicate with backflow channel. The utility model divides and sets up the upper and lower end in the casing with heat exchange and evaporation function, can simplify the structure setting in the casing, and the production cost is simplified, after setting evaporimeter below heat exchanger, can realize the step -by -step cooling of airflow from top to bottom, is favorable to the gathering of condensate in the bottom of casing and gas -water separation in the cooling process, thereby guaranteeing the drying effect of gas.

The utility model relates to humidifying jar technical field discloses a kind of anti-water multi-stage protection device of humidifying jar, including anti-water gas storage tank body, the upper portion of anti-water gas storage tank body is fixedly provided with air inlet component, the inboard of anti-water gas storage tank body is fixedly provided with pressure gauge, liquid level sensor is fixedly provided on anti-water gas storage tank body, the lower portion of anti-water gas storage tank body is fixedly provided with drainage component, the right side of anti-water gas storage tank body is fixedly provided with air guide component, the other side of air guide component is fixedly provided with humidifying jar body. The anti-water multi-stage protection device of humidifying jar can effectively prevent the liquid in the humidifying jar from flowing back to the upstream gas pipeline during abnormal conditions, damaging the instruments in the upstream equipment, causing other equipment failures, and automatically discharging the backflow water during abnormal conditions. The backflow water in the pipelines and equipment does not need to be manually removed, improving the safety and reliability of the humidification process production line and the degree of automation.

A process for producing ammonia comprises a first operation mode and a second operation mode; the first operation mode comprises the steps of: producing a gaseous CO stream by electrolysis in electrolytic cells supplied with energy and a CO2 stream; liquefying the gaseous CO stream obtaining a liquid CO stream that is stored in a CO storage unit (5); sending a high pressure CO stream, taken from the CO storage unit (5), to a CO conversion unit (13) together with a liquid water stream to conduct a water-gas shift reaction and produce H2 to use in the ammonia synthesis reaction; the second operation mode comprises the steps of: operating at least a part of the electrolytic cells in reverse mode, i.e., as fuel cells, where CO and O2 are fed and CO2 is produced with generation of electricity; the cells operating as fuel cells being supplied with CO taken and pumped from the CO storage unit (5) and stored in the first operation mode, and with O2 produced in an air distillation step.

The present application provides a kind of biomass gasification coupling SOEC co-electrolysis system and process of green fuel, the present application is coupled with biomass gasification and solid oxide electrolytic cell (SOEC) co-electrolysis synthesis gas path, with forestry waste biomass as raw material, adopt oxygen-carrying-CO2 adsorption functional material, construct gasification-adsorption integrated and SOEC co-electrolysis deep coupling system;System includes gasification unit, first heat exchange unit, gas purification unit, regeneration oxidation unit, SOEC electrolysis unit and fuel synthesis unit;With wind power, photovoltaic and other green electricity as SOEC electrolysis unit driving energy, integration biomass directional conversion, CO2 in situ capture-function material regeneration cycle, SOEC high temperature co-electrolysis is integrated, rely on heat cascade utilization, achieve system material closed loop reuse;By adjusting the amount of water vapor in the system, obtain specific hydrogen carbon ratio synthesis gas, so as to realize the production of green fuel, whole process saves traditional water gas shift process, improve system energy efficiency, avoid carbon loss, reduce high temperature energy consumption.

The utility model discloses a water gas integrated leak detection device, include: support frame, sealing tool, sealing tool liftable assembly in support frame, sealing tool is connected with the first drive component for driving sealing tool lift movement, sealing tool lift movement is used for closing or bare of the through -hole of speed reducer box body, air tightness detection subassembly, air tightness detection subassembly is used for detecting pressure change value when filling compressed air after sealing tool closes the through -hole of speed reducer box body, leak point detection device, leak point detection device liftable assembly in support frame can solve the leak detection of speed reducer box body needs to immerse and bring a series of troubles such as after immersion need to blow dry or dry, and through the compressed air filling sealed speed reducer box body observes whether the internal air pressure drops can judge whether there is leak point but also can not find the leak point position of the deficiency conveniently quickly.

A process for producing synthesis gas (syngas), to be used in particular for the synthesis of methanol or GTL hydrocarbons, comprises a first operation mode and a second operation mode; the first operation mode comprises the steps of: producing H2 by a reaction of splitting H2O into H2 and O2; producing CO by a reaction of splitting CO2 into CO and O2; using a first part of the CO obtained from the splitting of CO2 to form, together with H2 produced by water splitting, syngas; using a second part of the CO obtained from the splitting of CO2 in a CO conversion step together with H20, in which a water-gas shift reaction is conducted to convert CO into CO2 and produce H2, resulting in syngas; storing a third part of the CO in a storage; in the second operation mode, conducted alternatively to the first operation mode, CO stored in the first operation mode is taken from the storage and used, together with H2O, in a CO conversion step, in which the water-gas shift reaction is conducted to convert CO to CO2 and produce H2, resulting in syngas.

The application discloses a green electricity consumption system and method for synthesizing methanol by CO2 hydrogenation through plasma catalysis. H2 obtained by electrolysis of water and CO2 captured in an industrial process are first subjected to a reverse water gas shift reaction under efficient driving of normal pressure jet plasma to obtain a CO / CO2 / H2 mixed product, the mixed product is subjected to multi-stage pressurization after passing through a buffer storage tank, and green methanol is further synthesized in a hot catalytic bed. The application adopts a two-stage methanol synthesis system of plasma CO2 pre-conversion and CO / CO2 catalytic hydrogenation, solves the problems of catalyst deactivation and excessively high reaction temperature in a traditional hot catalytic reverse water gas shift reaction, and overcomes a thermodynamic bottleneck of a CO2 direct catalytic hydrogenation reaction. The plasma reaction device has high energy efficiency and is quick to start and stop, can be directly driven by fluctuating power, and the system maintains the stability of the catalytic system through intermediate product storage and multi-stage pressurization.

This invention discloses a method for preparing a cerium dioxide catalyst for ultra-high temperature catalytic water-gas conversion reaction. The method involves first synthesizing cerium dioxide nanoparticles via a hydrothermal method, and then subjecting the nanoparticles to multi-step heat treatment in a gaseous environment to achieve surface modification, resulting in a cerium dioxide catalyst with a large number of exposed coordination unsaturated sites. The catalyst prepared by this method exhibits excellent catalytic performance for water-gas conversion reaction in the ultra-high temperature range above 600℃. Traditional industrial Fe-based catalysts deactivate above 600℃, while the cerium dioxide catalyst prepared by this invention maintains high performance at temperatures above 600℃ and is not easily deactivated. Furthermore, cerium dioxide catalysts are environmentally friendly materials with advantages such as low cost and minimal environmental pollution, showing broad application prospects in industrial water-gas conversion reaction for hydrogen production.

A composition of an indium oxide catalyst including an alkali metal dopant and a method for producing an indium oxide catalyst including an alkali metal dopant. The alkali metal dopant can include Li + , Na + , K + , Rb + , Cs + , and Fr + cations. The method for producing an indium oxide catalyst including an alkali metal dopant includes mixing a solution of an indium salt with a base to form precipitated indium hydroxide (100), contacting the precipitated indium hydroxide with a solution including an alkali metal salt to produce an indium hydroxide solution (102), and calcining the indium hydroxide solution to form indium oxide; thereby forming an indium oxide catalyst including an alkali metal dopant (104).

The application discloses a method for predicting the activity degree of water in a heterogeneous edge water gas reservoir, and utilizes the percolation theory of the oil and gas reservoir, establishes the percolation mathematical model and equation of the heterogeneous edge water gas reservoir according to the invasion mode of the peripheral water body, and carries out numerical solution, so that the recovery degree of the gas reservoir under different permeability difference and peripheral water body size conditions can be predicted and analyzed, and the influence of the reservoir heterogeneity on the water activity of the water-bearing gas reservoir can be quickly and conveniently predicted.

The utility model discloses a kind of cleaning devices for heat exchange station, belong to heat exchange station technical field, including plate heat exchanger and box, the bottom of the box is provided with cleaning mechanism, water supply mechanism is provided on the box, hot fluid inlet pipe is provided on the plate heat exchanger, cold fluid outlet pipe is provided on the plate heat exchanger, hot fluid outlet pipe is provided on the plate heat exchanger. In the utility model, when the inside of plate heat exchanger is cleaned, the first water pump is used to make the water suction pipe draw out the cleaning agent in the inner cavity of the box, and the high-pressure gas is filled into the inner cavity of the tee joint by using the high-pressure fan, so that the gas and the cleaning agent are in contact, the high-speed water gas enters the plate heat exchanger, the kinetic energy and impact force of high-speed water gas flow are used to clean the inner wall of the plate heat exchanger completely, to ensure the cleaning effect of the plate heat exchanger.

The application discloses an industrial production method of a coal-based hard carbon precursor, adopts an external heating type carbonization and activation integrated converter, and gradually heats the formed coal-based raw material under the condition of air isolation, realizes the ordered pyrolysis of the coal-based raw material by regulating and controlling the temperature rising rate in the integrated converter, the large side chain of the macromolecular hydrocarbon in the raw material is first disconnected, and the ordered pyrolysis is continuously carried out as the temperature slowly rises, the small molecule volatile components generated by pyrolysis are directionally overflowed, the uniform micropore structure is formed in the internal hard carbon, and the effective pore suitable for the sodium battery is met; when the coal-based raw material is heated to above 650 DEG C, the carbon base occurs polycondensation reaction, part of components are coked to form the carbon structure, and the carbon base layer spacing is simultaneously regulated and controlled to the range suitable for the sodium battery; at this time, the coal-based raw material occurs a mild water gas reaction in the activation agent atmosphere, accurate pore opening and structure regulation are carried out on the basis of the original micropore, the carbon structure integrity is not damaged, and a core structure foundation is laid for subsequent preparation of the high-performance sodium coal-based hard carbon.

The present disclosure relates generally to supported CO2 conversion catalyst comprising: a support that is a cerium oxide support, a titanium oxide support, an aluminum oxide support, a zirconium oxide support, a zinc oxide support, a silicon oxide support, or a mixed oxide support comprising a mixture of two or more of cerium oxide, titanium oxide, aluminum oxide, zirconium oxide, zinc oxide, and silicon oxide; at least one of copper, iron, platinum palladium, zinc, and manganese, present in an amount in the range of 0.05 to 15 wt% of the catalyst, based on the total weight of the catalyst; and at least one of tellurium, bismuth, tin, antimony, germanium, selenium, arsenic, boron, indium, and silicon present in an amount in the range of 0.05 to 15 wt% of the catalyst, based on the total weight of the catalyst.

This utility model relates to the field of coal chemical technology, and more particularly to a highly stable dual isothermal converter system. The system comprises a mixed gas pipeline of water gas and steam connected to the mixed gas inlet of a medium-temperature heat exchanger. The mixed gas outlet of the medium-temperature heat exchanger is connected to the upper inlets of primary isothermal converter A and primary isothermal converter B, respectively. The lower outlets of primary isothermal converter A and primary isothermal converter B are connected to the converter gas inlet of the medium-temperature heat exchanger. The converter gas outlet of the medium-temperature heat exchanger is connected to the converter gas inlet of a quencher. The converter gas outlet of the quencher is connected to the converter gas inlet at the upper end of a secondary isothermal converter. The converter gas outlet at the lower end of the secondary isothermal converter is connected to the converter gas output pipeline. This utility model ensures stable shutdown and maintenance of the isothermal converters by setting up two primary isothermal converters, adding double shut-off valves and blind flanges.

The present application relates to the technical field of solid oxide electrolysis cell, and particularly relates to a mixed ionic conductor solid oxide electrolysis cell, a preparation method thereof and application thereof in synergic electrolysis of CO2-H2O. The present application uses mixed proton conductor electrolyte and oxygen ion conductor electrolyte as electrolyte material, so that the system has oxygen ion and proton conduction capacity. CO2 and H2O are introduced as co-reactants on the two sides of the electrode in the same electrolysis device, so as to realize the coupling reaction of CO2 reduction at the fuel electrode and H2O electrolysis at the air electrode, directly generate synthesis gas (CO+H2) with adjustable proportion, and at the same time, the fuel electrode realizes reverse water gas shift reaction (RWGS), thereby improving CO2 conversion efficiency and regulating synthesis gas composition, realizing synchronous improvement of CO2 resource utilization and energy conversion efficiency.

The present application belongs to the field of clean combustion of coal and collaborative disposal of industrial solid waste, and discloses a coal and red mud collaborative denitration and desulfurization clean combustion method and a boiler system, aiming to solve the technical problems of high cost of denitration and desulfurization of traditional coal-fired boiler and difficulty in utilization of red mud. Through a double-furnace series structure and a staged air distribution system, a partitioned atmosphere is constructed in the furnace, realizing in-situ integration of denitration in the reduction zone and desulfurization in the oxidation zone. The strength of the reduction atmosphere is enhanced by relying on atomized water to strengthen the water gas reaction, and the material residence time and the catalyst life are prolonged by cooperating with the countercurrent contact of the porous particles of red mud and the two-stage circulation. Meanwhile, the iron oxides in the red mud are in-situ reduced and magnetized in the furnace, and a high-purity ferroferric oxide product is obtained through crushing and magnetic separation at the furnace bottom. The present application realizes multiple goals of in-situ low-cost clean combustion of coal, large-scale consumption of red mud and high-value resource utilization, and brings environmental and economic benefits.

A unit for removing CO2 from a syngas comprises means to remove acid gas from a syngas containing CO, H2S and carbonyl sulphide (COS) to eliminate at least most of H2S, means for heating purified syngas, a saturator for moisturizing the heated syngas to produce heated and moisturized syngas, means for injecting steam into the heated and moisturized syngas to form a mixture of steam and syngas, at least one shift reactor for subjecting the mixture to water gas shift reaction means for cooling the shifted syngas to form cooled shifted syngas, an adsorption unit for removing H2O and H2S from the cooled shifted syngas by adsorption in any order to produce dehydrated syngas, means for separating the dehydrated syngas by partial condensation and / or distillation to form a H2 rich gaseous stream and CO2 rich liquid stream and means for sending the H2 rich gaseous stream as fuel to a gas turbine.

The application discloses a control method and device of a heating device, the heating device and a storage medium, relates to the technical field of the heating device, and the control method of the heating device comprises the following steps: in the case that the heating device has a heating demand, determining a current control strategy according to a zero-cold-water demand period and a current time node; and controlling a heating gas valve of the heating device and / or a zero-cold-water gas valve of the heating device according to the current control strategy. In the above manner, when there is a heating demand, the heating gas valve and the zero-cold-water gas valve are controlled according to the control strategy corresponding to the zero-cold-water demand period and the current time node, the problems of insufficient gas supply or high-temperature risk of the combustion chamber when the heating and the bathroom are shared are avoided, the stability of the functions when the heating and the bathroom are shared is ensured, and the user experience is improved.

The application discloses an intelligent dynamic shunt control method for an adsorption enhanced water-gas shift system, and relates to the technical field of control of the adsorption enhanced water-gas shift system. The method comprises the following steps: S1, parameter acquisition and preprocessing; S2, construction and training of a prediction model; S3, real-time prediction and demand analysis; S4, intelligent shunt ratio decision; and S5, dynamic adjustment and model updating. The method adopts a multi-model fusion and an intelligent optimization algorithm to solve an optimal shunt ratio, combines time series prediction, performance degradation evaluation and system output response simulation, and has higher control precision compared with existing static threshold adjustment or single PID control.

Embodiments of this disclosure relate to a method and system for preparing a gaseous feedstock. The method and system for preparing a gaseous feedstock for a reactor section of a cracker includes: preheating a hydrocarbon blend in a feed preheating exchanger (FPH) located in a convection section of the cracker to form a preheated hydrocarbon blend, the cracker having a convection section connected to the reactor section, wherein the hydrocarbon blend comprises fossil-based hydrocarbon feedstock and recycled feedstock oil. The method and system further include mixing the preheated hydrocarbon blend with dilution steam to form a hydrocarbon-water gas-liquid feed mixture, separating the hydrocarbon-water gas-liquid feed mixture into liquid and gaseous feedstocks, and supplying the gaseous feedstock to a high-temperature coil exchanger (HTC) of the cracker.

The specification describes a gas heated reformer apparatus comprising: one or more tubes containing a steam reforming catalyst; and a shell surrounding said tube(s) and together with the tube(s) defining a shell side; wherein the shell comprises an inlet and outlet for a heat exchange medium; wherein the shell side is provided with a water gas shift catalyst located at one or more areas of the shell side where during use the heat exchange medium in contact with the shell side has a temperature of 500-750° C. Also described is a plant for producing hydrogen, ammonia or methanol comprising the gas heated reformer. A water gas shift catalyst can be retrofitted to an existing gas heater reformer.

This invention provides a method for preparing hydrocarbons, the method comprising the following steps: S1) pyrolyzing mixed waste to generate a first mixed gas; S2) reforming the first mixed gas (after removing impurities) in a first fluidized bed reactor with steam to prepare a second mixed gas; S3) separating the second mixed gas into a first stream containing carbon dioxide and a second stream containing hydrogen and carbon monoxide; S4) feeding the first stream separated in step S3) into a second fluidized bed reactor and converting it into carbon monoxide via a reverse Boudouar reaction; S5) mixing the second stream and the carbon monoxide converted in step S4) to generate a third mixed gas, and preparing syngas from the third mixed gas via a water-gas shift reaction; and S6) generating hydrocarbons from the syngas via a catalytic reaction.

-At least one reformer (30) for converting a flow containing hydrocarbon feedstock (1) into a reformed gas flow (32) containing hydrogen, carbon monoxide, carbon dioxide and at least one hydrocarbon as an impurity via conversion with oxygen (O2)-rich vapor, wherein the reformer (30) includes an exothermic oxygen-based autothermal reforming (ATR) or partial oxidation (POX) reforming and a heat recovery section (40), and -At least one reformer ( Before entering 30), a heating furnace (90) configured to preheat a flow containing hydrocarbon feedstock (1), at least one water-gas shift (WGS) reactor (50) for converting carbon monoxide in the reformed gas flow (32) into a shifted gas flow (51) containing additional carbon dioxide and hydrogen, and a first product flow (61) located downstream of the WGS reactor (50) and which removes carbon dioxide and hydrogen from the shifted gas flow (51) and enriches carbon dioxide and hydrogen - A hydrogen and carbon dioxide recovery unit (60) configured to generate a second generation flow (62), a waste flow (63) in which both hydrogen and carbon dioxide have been depleted, - a compressor (70) for compressing a portion (65) of the waste gas flow (63) from the hydrogen and carbon dioxide recovery unit (60) into a compressed gas flow (71), and - a membrane separation system selective for hydrogen permeation, to which the compressed gas flow (71) is supplied and which generates a hydrogen-enriched permeate (82) flow and a hydrocarbon-enriched concentrate (81) flow. A hydrogen production plant comprising: a stem (80); a passage for supplying at least a portion of the hydrogen-enriched permeate (82) to the furnace (90) so that it can be used as a low-carbon fuel by the furnace (90); and a passage for recycling the hydrocarbon-enriched concentrate (81) to a hydrocarbon feed (1) via a pipeline (83), and / or to a reformer (30) via a pipeline (85), and / or to the inlet of a water-gas shift reactor (50) via a pipeline (87).

The application relates to the field of clean energy and chemical industry cogeneration technology in the coal chemical industry, in particular to a dry pulverized coal gasification coupled green hydrogen cogeneration methanol-sulfur system, which comprises a coal gasification unit, a purification unit, a methanol synthesis unit connected in sequence through pipelines, a hydrogen preparation unit for preparing green hydrogen by electrolyzing water by using renewable energy, and a sulfur recovery cogeneration sulfur unit connected with the purification unit and used for recovering regenerated sulfur-containing waste gas in the purification unit. The application constructs a closed-loop production system of 'dry pulverized coal gasification-green hydrogen coupling-sulfur hydrogen cogeneration', compared with traditional coal water slurry gasification, the dry pulverized coal gasification furnace is combined with green hydrogen coupling, oxygen consumption and coal consumption are significantly reduced, and the high-carbon emission water gas shift process is eliminated from the source; and through the set waste heat recovery device, the sensible heat of high-temperature crude synthesis gas is converted into electric energy to provide power supplement for subsequent driving equipment in the system, realizing internal circulation and cascade utilization of energy.

The power generation system comprises a fuel cell unit adapted to generate electric power using a hydrocarbon-containing gas. A water-gas shift reactor is adapted to receive flue gas from the fuel cell unit and convert carbon monoxide contained in the flue gas into carbon dioxide and hydrogen. A cryogenic carbon dioxide capture unit is adapted to receive flue gas from the water-gas shift reactor and remove carbon dioxide therefrom. A recycle line recycles carbon dioxide-depleted flue gas to the fuel cell unit.

A looping reaction hydrogen production system includes a reduction reaction device, a primary separation device, a hydrogen production reaction device, a secondary separation device, a primary heat transfer device and a cooling purification device. Based on looping combustion reaction mechanism, the system makes MeO / Me circularly flow between the hydrogen production reaction device and the reduction reaction device to respectively generate a reduction / oxidation chemical reaction, and to convert the conventional carbon-based solid fuel into the high-purity clean hydrogen energy. Compared with the conventional hydrogen production technology from water-gas shift reaction of syngas, the system reduces water consumption, energy consumption and environmental pollution of the hydrogen production process; converts conventional carbon-based fuel into clean hydrogen energy by use of renewable energy sources, such as solar energy; and achieves efficient capture and storage of gaseous CO2.