45 results about "Dry gas" patented technology

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.

This invention relates to an online maintenance device and method for leveling guide wheels in a rubber diaphragm-sealed dry gas holder. The online maintenance device for leveling guide wheels includes a vertical lifting device, a horizontal guide rail, a horizontal moving device, a power traction device, and a control system. The vertical lifting device consists of a first lifting device, a second lifting device, and a synchronous drive device. The horizontal moving device is mounted on the horizontal guide rail and consists of a moving trolley and suspended guide wheels. One end of the moving trolley is connected to the power traction device via a traction steel wire rope. This invention enables rapid online maintenance and replacement of leveling guide wheels without shutting down the gas holder; it significantly improves the maintenance efficiency of leveling guide wheels while eliminating energy waste, environmental pollution, and safety risks caused by gas holder shutdowns.

A fuel cell humidifier with purification function includes an interconnected humidification component and a purification component. The humidification component contains first and second partitions and multiple hollow fiber membrane tubes. Dry air exchanges heat and moisture with the humid air inside the fiber membrane tubes and is then discharged through the exhaust port of the detection housing. The purification component consists of a supporting housing, a threaded lifting platform, and a quickly replaceable filter element. A handle drives the lifting platform to slide up and down, achieving sealing, locking, and removal of the filter element. The air inlet pipe is threadedly connected to the filter element, ensuring that the air undergoes oil mist adsorption and ultra-fine filtration before flowing into the element. A sensor built into the detection housing monitors the impurity concentration in real time and prompts for replacement. By adding a secondary purification and sealing device to the external filtration system, a clean and uniformly humidified air source is provided for the fuel cell, simplifying the maintenance process and improving system stability and reliability.

The utility model discloses an energy -conserving type double air bellow drying system relates to drying technical field. The utility model discloses: drying box, built -in has the feeding net belt, air supply box, is located drying box's both sides, and the upper side wall of air supply box is linked with drying box, and the upper cavity of air supply box is provided with the air distribution mechanism that links with the air supply mechanism, and the air distribution mechanism is used to send into the hot air in air supply box, exhaust mechanism, and the bottom side wall of drying box is linked with the air inlet end, and the exhaust end is communicated with outside from air supply box, and constructs and is used for the exhaust fan of dehumidification, circulation mechanism, including being located the axial flow fan of air supply box bottom, and the bottom side wall of drying box is linked with the import part of axial flow fan, and the air outlet end of axial flow fan is vertically set up, and the moisture air path of exhaust mechanism and the fresh air path of air supply mechanism pass through the heat exchange box and heat exchange, just can realize through convenient means, and let the dry gas in drying box circulate, and its realization even drying, the purpose of heat reuse.

The application discloses a residual oil alkali metal treatment-catalytic cracking combined processing method, which comprises the following steps: (1) mixing residual oil raw materials and alkali metals into a reactor to perform reaction; (2) performing solid-liquid separation on the material after the reaction in step (1) to obtain a solid-phase product and generated oil; and (3) feeding the generated oil obtained in step (2) into a catalytic cracking device, and performing fractionation on the material after the reaction to obtain dry gas, liquefied gas, catalytic cracking gasoline, catalytic cracking light diesel oil, catalytic cracking heavy distillate oil and coke. The method can produce high-quality low-sulfur gasoline fraction, has a long running cycle, does not need high-temperature and high-pressure conditions and has low hydrogen consumption, thereby effectively improving fuel quality, reducing device running cost, realizing energy saving and consumption reduction.

The invention relates to a distributed natural gas-methanol composite hydrogen production method, which comprises: S1, allowing a mixed raw material of desulfurized natural gas and desalted water to enter a conversion unit, and carrying out a natural gas reforming reaction to obtain converted gas; s2, enabling the converted gas to enter an isothermal conversion unit for water-gas conversion reaction to obtain converted gas; s3, enabling the overheated methanol to enter a methanol reforming unit, and carrying out methanol reforming reaction to obtain reformed gas; s4, mixed gas of the shift gas and the reformed gas enters a gas-liquid separation unit for gas-liquid separation, and hydrogen-rich dry gas and recycled water are obtained; and S5, the hydrogen-rich dry gas enters a hydrogen purification unit for purification treatment, and the product hydrogen is obtained. According to the method, steam does not need to be supplemented externally, the problem that steam cannot be co-produced in public engineering of the hydrogen refueling station is effectively solved, a steam pocket system does not need to be arranged, the hydrogen production capacity and the heat utilization rate of the device can be effectively improved, and the equipment investment cost of unit hydrogen production capacity is effectively reduced.

The present application relates to the technical field of methane conversion process, in particular to a method and system for preparing synthesis gas from a methane-containing raw gas, the method comprising: (1) sequentially compressing and purifying the methane-containing raw gas to obtain purified raw gas and water mixture, and obtaining the mixed raw material; (2) sequentially performing first heat exchange, first preheating, second preheating and reforming reaction on the mixed raw material in a heat exchange reforming reactor to obtain high-temperature reforming gas; performing second heat exchange on the high-temperature reforming gas and the vaporized raw material after the first heat exchange, and then performing the first heat exchange again to obtain low-temperature reforming gas; (3) sequentially cooling and gas-liquid separating the low-temperature reforming gas to obtain reforming dry gas as synthesis gas; wherein the heat required for the first preheating, the second preheating and the reforming reaction is provided by combustion of the methane-containing raw gas. The method has high methane conversion rate and total carbon atom utilization rate, and also has the characteristics of simple process, easy to be prised and installed, high energy efficiency and the like.

The invention relates to a system for drying gas comprising an inlet (1) for the supply of gas to be dried, an outlet (2) for discharging dried gas, a dryer (3) with plural vessels (4A, B) enclosing a regenerable desiccant (5A, B), a variable bypass conduit (18) configured for splitting off a portion of the gas to be dried, and a controller (23). The bypass conduit is provided with a controllable adjustable valve (19) for adjusting the portion of the to be dried gas split off in the variable bypass conduit. The controllable adjustable valve is connected to the controller configured to regulate the portion of the gas to be dried split off by adjusting the controllable adjustable valve such that a predetermined value of a pressure dew point of the gas to be discharged is obtained.

The present application relates to the technical field of petroleum refining, and discloses a method for treating liquid hydrocarbon sweetening tail gas. The method is carried out in a tail gas treatment system, and comprises the following steps: introducing a sweetening solvent, a back-extraction oil and an oxidation air into a three-phase separator respectively to carry out contact mixing, so as to obtain sweetening tail gas; introducing the sweetening tail gas into a mixer to carry out mixing treatment with column top oil gas in the mixer, so as to obtain mixture I; introducing the mixture I into a crude gasoline tank to carry out gas-liquid separation, so as to obtain rich gas; introducing the rich gas into an absorption tower to carry out separation treatment, so as to obtain sulfur-containing dry gas; and introducing the sulfur-containing dry gas into a dry gas desulfurization tower to carry out desulfurization treatment, so as to obtain purified dry gas. The method provided by the present application has the advantages of less operation, low investment, precise control of the oxidation air flow in the liquid hydrocarbon sweetening process, recovery of hydrocarbons in the sweetening tail gas, and good economic and environmental benefits.

A method for completely or partially separating light gas components from a wet gas compressor suction stream and sending them directly to an untreated fuel gas header using a system in parallel with the existing wet gas compressor, in a fluid catalytic cracking (FCC) unit operating in petrochemical mode where dry gas and LPG production increases and a bottleneck occurs in the product flow, wherein the parallel system includes an auxiliary compressor and a membrane separation system.

This invention provides a system and method for dry gas desulfurization, comprising a cooling device, a buffer device, a first desulfurization tower, and a second desulfurization tower connected in sequence. The cooling device is used to cool the raw material dry gas. The buffer device is connected to the cooling device and receives the cooled raw material dry gas for impurity removal. The first desulfurization tower is connected to the buffer device and receives the impurity-removed raw material dry gas for first desulfurization to obtain first desulfurized dry gas. The second desulfurization tower includes an inverted funnel-shaped gas-lifting structure, dividing the second desulfurization tower into a lower desulfurization section and an upper water washing section. The desulfurization section is connected to the first desulfurization tower and receives the first desulfurized dry gas for second desulfurization to obtain second desulfurized dry gas. The desulfurization section and the water washing section are connected through the gas-lifting structure so that the second desulfurized dry gas enters the water washing section. By implementing dry gas desulfurization through the system of this invention, the H2S content in the dry gas is effectively reduced, the thermal efficiency of the heating furnace is improved, the dew point corrosion problem of the heating furnace flue gas is solved, and impurities such as condensed oil, solid particles, and washing liquid in the desulfurized dry gas are also reduced.

The application discloses a gas pressurizing rotary drum filter, which is characterized in that a distribution head rotor is connected to a rotary drum, a distribution head is arranged outside the distribution head rotor, the rotary drum is divided into a plurality of working zones according to the rotating direction, an annular cavity between the distribution head rotor and the distribution head is divided into independent mother liquor discharge cavities, dry gas discharge cavities and washing liquid discharge cavities according to the working function zones of the rotary drum along the circumferential direction, filtered mother liquor in the filtering zone, washed washing liquid in the washing zone and dried water-containing gas in the drying zone are respectively introduced into corresponding zones of the annular cavity through connecting pipes in the respective zones, and finally discharged through the mother liquor discharge outlets, the washing liquid discharge outlets and the dry gas discharge outlets on the distribution head; unloading back-blowing gas and filter cloth backwashing liquid with certain pressure are respectively introduced into the connecting pipes through back-blowing gas inlets and washing liquid inlets on the distribution head, and then introduced into the rotary drum, so as to realize unloading by blowing gas to the filter cake and backwashing to the filter cloth, and thus high-efficiency separation of the mother liquor and the washing liquid is realized.

This application discloses a dehumidification device and a control method for the dehumidification device. The dehumidification device includes a housing, an exhaust fan, a regeneration mechanism, and an air supply mechanism. The housing is provided with an air duct, and the exhaust fan, regeneration mechanism, and air supply mechanism are disposed within the air duct. The regeneration mechanism removes moisture from the gas entering the air duct and outputs dry gas. The control method includes: starting one of the exhaust fan and the regeneration mechanism; starting the other of the exhaust fan and the regeneration mechanism so that the exhaust fan discharges the humid gas in the regeneration mechanism out of the dehumidification device; and after a first preset time, starting the air supply mechanism to transport the dry gas from the regeneration mechanism to the target space. Through the above method, this application can shorten the time it takes for the dehumidification device to adjust the humidity of the target space to the required humidity, thereby improving the dehumidification efficiency and dehumidification effect of the dehumidification device.

This invention relates to a humidifier for fuel cells. The humidifier for fuel cells includes a humidification unit for generating humidified air, comprising: a first separator forming a dry gas flow path; a second separator forming a water-containing gas flow path; a humidification membrane for generating humidified air by imparting moisture contained in the gas flowing in the water-containing gas flow path to the dry air flowing in the dry gas flow path; a protective film for reinforcing the humidification membrane; and a sealing member disposed along a first outer edge of the humidification membrane and sealing between the dry gas flow path and the water-containing gas flow path, wherein a close-fitting area is formed between the first outer edge of the humidification membrane and the second outer edge of the protective film.

A bunkering vessel according to the present invention is for loading a liquefied gas to and unloading a liquefied gas from a liquefied gas storage tank of a target, and it includes a bunkering tank storing a liquefied gas; a manifold provided at a bunkering station of the bunkering vessel to flow in a liquefied gas to and flow out a liquefied gas from the bunkering vessel; a liquefied gas transfer line connecting the bunkering tank and the manifold to flow a liquefied gas; and a dry gas supply portion producing a dry gas, and the dry gas supply portion supplies a dry gas to the liquefied gas storage tank through the manifold before loading a liquefied gas to the liquefied gas storage tank to remove moisture inside the liquefied gas storage tank.

FIELD: gas production.SUBSTANCE: invention relates to the field of production and preparation of natural gas from Valanginian deposits for long-distance transportation at complex gas treatment units (CGTU) during peak loads for gas production at oil and gas condensate fields (OGCF) in the North of the Russian Federation, implementing automatic load distribution between process lines (PL) for low-temperature gas separation with turbo-expander units (TEU), with simultaneous maintenance of the level of unstable gas condensate (UGC) in three-phase liquid separators (LS), its density and flow control when feeding into the main condensate pipeline (MCP), as well as control of the flow of dried gas at the CGTU. The purpose of the invention is to ensure automatic load distribution between the PL with the TEU during peak loads for gas production at the CGTU, maintaining the filling level of the OGC in the LS within the required limits, controlling its density and flow rate taking into account the state of the equipment involved in the process of preparing natural gas for long-distance transportation, while observing the standards and restrictions stipulated by the process regulations of the installation for various modes of its operation. The claimed method allows, at the CGTU, during peak loads of dry gas consumption by consumers, to ensure automatic load distribution between the PL with the TEU and the preparation of OGC from natural gas at all stages of the OGCF operation.EFFECT: maintaining the filling level of OGC in the LS within the required limits, controlling its density and consumption at the CGTU, taking into account the condition of the equipment involved in the process of preparing natural gas for long-distance transport, while observing the standards and restrictions stipulated by the process regulations of the unit for its various operating modes.4 cl, 2 dwg

The utility model relates to the technical field of gas drying equipment, and discloses a zero-gas-consumption blast cold blowing regeneration compressed gas drying system which realizes adsorption, regeneration and pressure equalization. The water content of gas entering the system is reduced, the quality of product gas is improved, meanwhile, energy consumption and production cost can be reduced, low-dew-point dry gas is prepared, cold-blowing airflow is powered by an air blower, cold-blowing circulating airflow is output from the air blower and enters a second adsorption tower from bottom to top, and cold-blowing cooling is conducted on an adsorbent; after flowing out of the second adsorption tower, the cold blowing gas enters the air blower to be sucked and pressurized and then is output, and is cooled by the regeneration cooler to form the whole cold blowing circulation until the temperature of the second adsorption tower is reduced to the set temperature, so that finished gas is completely not consumed, the cost is reduced, emptying is basically avoided in the whole process, and noise and pollution caused by sudden discharge of compressed gas are eliminated; the switching is stable, the service life of the adsorbent is prolonged, and the equipment basically realizes zero emission and saves energy.

The application discloses a method for increasing high-aromatic potential naphtha by coupling carbon dioxide and straight-run diesel hydrogen conversion, and the method comprises the following steps: mixing straight-run diesel raw material, CO2 and cycle oil, and then entering a CO2 coupling reaction zone to generate a CO2 and alkane coupling reaction; mixing the obtained liquid phase stream after gas-liquid separation with hydrogen, and then entering a hydrogen refining reaction zone and a hydrogen cracking reaction zone in sequence; and separating and fractionating the obtained hydrogen cracking reaction zone effluent to obtain dry gas, liquefied gas, light naphtha, heavy naphtha and diesel, wherein the diesel is cycle oil. The method can effectively utilize the alkane components of the straight-run diesel, and realizes the purpose of effectively increasing high-aromatic potential heavy naphtha.

The application discloses a cold storage defrosting system and method, which comprises a cold storage body and a dehumidifying device. The dehumidifying device has a dehumidifying runner, and the dehumidifying runner has a treatment area and a regeneration area. The dehumidifying device reduces the humidity inside the cold storage body and removes frost inside the cold storage body through the dehumidifying runner. The dehumidifying device has a treatment air inlet and a treatment air outlet. The treatment air inlet can draw treated gas from the inside of the cold storage body, and the treatment air outlet can re-deliver dry gas after being adsorbed and dehumidified by the dehumidifying runner to the cold storage body. The cold storage defrosting system does not produce condensate water during the entire dehumidifying process of the cold storage, and does not need to drain water in the cold storage. The problem of inconvenient drainage of cold water caused by the use of defrosting methods such as electric defrosting and hot fluorine defrosting is solved. The remaining cold water in the cold storage cannot be completely drained, and the cold water will re-condense. The dehumidifying and defrosting effect of the cold storage is not complete. At the same time, there is no obvious temperature fluctuation in the cold storage during the operation of the cold storage defrosting system.

The present application belongs to the field of oil refining and chemical industry, and particularly relates to an energy-saving and consumption-reducing coking system and method. The present application comprises an absorption stabilizing mechanism for separating dry gas components and liquid hydrocarbon components, recovering gasoline components carried in gas, reducing gas content in liquid hydrocarbon components, and separating liquid hydrocarbon and gasoline components, and a heat supply unit for providing heat source for the absorption stabilizing mechanism, which is in communication with the absorption stabilizing mechanism. In the present application, part of condensed oil at the bottom of the absorption tower is changed into stable gasoline as an absorbent to be delivered to the absorption tower, so that the amount of absorbent of the absorption tower is increased, the dry gas index control of the absorption tower is met, the feed amount of the resolving tower and the stabilizing tower is greatly reduced, the heat consumption of the resolving tower is reduced, the reflux ratio of the stabilizing tower is reduced, the heat consumption of the absorption stabilizing mechanism is greatly reduced, and the energy consumption is reduced. When the system is in low load, the heat deficiency of the fractionating tower is solved, and conditions for product control of the fractionating tower are provided.

The utility model provides a kind of maintenance drying equipment, including box and airflow guide part;Partition is provided in box, and box is divided into temperature control cavity and drying cavity by partition;Temperature control part is provided in temperature control cavity, and temperature control part can adjust gas temperature in temperature control cavity, and drying part is provided in drying cavity, and drying part can dry gas in drying cavity;Airflow guide part, and airflow guide part can make gas in temperature control cavity circulate to temperature control cavity after flowing through drying cavity.

The utility model belongs to compressor technology field for dehumidifier, and disclose a kind of compressor unit for dehumidifier of low power consumption, including primary compression cylinder, secondary compression cylinder and switchable cascade pipe, switchable cascade pipe contains two groups of parallel cascade path, and path switching is realized by the opening and closing of electric control pipeline valve, and only one group path is always connected, secondary compression cylinder section area is less than primary compression cylinder, adapt volume change after gas compression, improve efficiency;When summer, primary compression gas directly enters secondary compression by first cascade pipeline, dehumidifier exports low-temperature dry gas, improves comfort level;When winter, primary compression gas is transported by second cascade pipeline, and the cooling pipeline in it exchanges heat with dehumidifier output gas, both reduce primary compression gas temperature to save secondary compression energy consumption, and improve output gas temperature, without additional heating device, the unit can be flexibly adjusted according to season, greatly reduce power consumption, and it is strong in practicality.

The present invention relates to a humidifier for a fuel cell, the humidifier including: a humidification module that humidifies dry gas supplied from the outside by using wet gas discharged from a fuel cell stack; an intermediate housing that includes a first cover combined with one end of the humidification module and a second cover combined with the other end of the humidification module, both ends of the humidification module being open; a first gas inlet and a first gas outlet formed on one side of the intermediate housing; and a hollow fiber membrane bundle accommodated in the intermediate housing in a longitudinal direction, wherein the hollow fiber membrane bundle includes a plurality of first hollow fiber membranes each independently including a first hollow, and centers of the first hollows are each offset toward the other side of the intermediate housing with respect to centers of the first hollow fiber membranes each.

A humidifier that can maintain high sealing performance between a separator and a water exchange membrane without applying an excessive external force to the separator even in the event of temperature change is provided. Humidifying modules each include plate-shaped separators each including a dry gas-side water exchange portion formed on one side and a water-containing gas-side water exchange portion formed on the other side. The humidifying module is structured by stacking a plurality of the separators in a state in which a water exchange membrane is disposed between the dry gas-side water exchange portion and the water-containing gas-side water exchange portion facing each other. A loop-shaped partition member that forms a pressurization space between the adjacent humidifying modules is provided in a state in which the humidifying modules are stacked to guide a fluid into the pressurization space.

The utility model discloses a drying assembly and a drying machine table, the drying assembly is suitable for drying a washed wafer, the drying assembly comprises a spraying rod, the surface of the spraying rod is provided with a plurality of spraying holes, and the spraying holes are suitable for spraying drying gas to the wafer for drying; and the driving motor is suitable for driving the spraying rod to rotate in the axial direction so as to remove obstructions located in the spraying holes. The driving motor is suitable for driving the spraying rod to rotate in the axial direction so as to remove obstructions located in the spraying holes, the obstructions are thrown out of the spraying holes under the action of centrifugal force, the obstructions in the spraying holes are effectively removed, the risk that the spraying holes are blocked is reduced, and the spraying efficiency is improved. Therefore, when the spray holes spray the dry gas to the wafer for drying, each position of the wafer is dried more uniformly, the situation that the wafer has defects due to non-uniform drying of the wafer is avoided, and the yield of the wafer is improved.

The application discloses a kind of vehicle air supply systems, including air compressor assembly and regenerative adsorption dryer.Dryer is equipped with first drying tank, second drying tank, air inlet switch valve, exhaust switch valve, first throttle valve, first check valve and second check valve.Air inlet switch valve is connected with compressed air first output end, and compressed air can be selectively introduced into any drying tank;Exhaust switch valve is used to exhaust regenerative gas to atmosphere;First throttle valve is connected between two drying tanks.When one tank is drying, part of drying gas enters another tank through throttle valve and is discharged, realizing regeneration.Two tanks work alternately to ensure continuous air supply.The application can also use gas storage tank gas to assist regeneration through exhaust valve when overpressure, or add heater to realize micro-heat regeneration.The air supply system has high drying efficiency, strong regeneration capacity, can realize long-term maintenance-free, and is suitable for new energy vehicles air suspension and other occasions requiring dry compressed air.