94results about How to "Lower dew point" patented technology

The invention relates to a device for continuously preparing low-temperature dry air with low dew point, mainly comprising the parts as follows: an initial effect air filter, an induced device, a first-level surface refrigerant cooler, a turning wheel dehumidifier, a first-level cryogenic refrigerant cooler, a second-level cryogenic refrigerant cooler and a box body. An end part of the box body is provided with a gas inlet, a tail part of the box body is provided with a gas outlet, the inside of the box body is orderly provided with the initial effect air filter, the induced device, the first-level surface refrigerant cooler, the turning wheel dehumidifier, the first-level cryogenic refrigerant cooler and the second-level cryogenic refrigerant cooler from the end part to the tail part; and the initial effect air filter, the induced device, the first-level surface refrigerant cooler, the turning wheel dehumidifier, the first-level cryogenic refrigerant cooler and the second-level cryogenic refrigerant cooler are orderly connected in series through an air flue. The turning wheel dehumidifier of the device consists of a turning wheel and an air regeneration device; and the device can continuously prepare dry air with absolute water content 0.0003g / kg and the dew point between 80 and 90 DEG C below zero.

Aiming at overcoming the defects of the traditional absorption drying method and a large adsorption type compressed air dryer, the invention provides a process and device being used for drying an adsorption type compressed gas regenerated by using compression heat, being capable of obtaining a drying gas with lower dew point and recycling a blast-cold gas. According to the invention, an exhaust and pressure-reduction process does not exist, the regenerated and heated blast-cold gas is recycled, the compressed air and the energy are saved, and the energy consumption is lowered.

The invention relates to a high-voltage cabinet dew point detection system and a method thereof. The system comprises a remote computer, a main controller and a temperature and humidity transmitter used for acquiring indoor and outdoor temperature and humidity data changes of a high-voltage cabinet. The temperature and humidity transmitter sensitively detects temperature and humidity value changes in air, converts the changes into electric signals and transmits the electric signals to a system host, namely the main controller, through an RS-485 bus. The system host processes, converts, displays and stores data, compares the data with a set value and controls a warning unit and a dehumidifying corollary device to work. Besides, the main controller transmits the data and state content to the remote computer. Accordingly, temperature, humidity and dew point data in the 35 kV high-voltage cabinet can be directly detected. Prevention is conducted before equipment in the cabinet, especially a busbar, generates condensation. Meanwhile, the dehumidifying corollary device can be controlled to dehumidify the interior of the cabinet in a linkage mode, the dew point in the cabinet is lowered, work efficiency is improved, loads of operators are reduced, and the requirement of power industry development in China is also met.

The invention discloses a drying and water-recovering process of heat conduction coal by venturi injecting circulation of tail gas with low oxygen content. The process flow comprises: 1, a coal drying system; 2, a tail gas dust-removal and condensed dehydration system; 3, a circulation gas pre-heating and heating system; and 4, a circulation gas oxygen-content-controlling system. In the process, all systems can cooperate with one another to fully realize respective functions, so that the problem that the system fails to operate for a long period because the high-dew-point dust-contained tail gas entering a dry-process dust collector (cyclone separator, bag type dust collector and electrostatic precipitator) is susceptible to dewing and blocking the dust collector in the traditional inert gas circulation drying process is solved, and the continuous long period operation of the system is guaranteed. The process has the characteristics of energy conservation, environmental protection andsafety.

This invention relates to a multistage solution dehumidification method characterizing the solution dehumidification is classified into two or more stages, each stage solution circulates independently with different concentration, yet single-way transition exists between stages from high to low density and the most condensed solution stage is supplemented a certain amount of solution from outside and the weak solution stage exhausts a certain amount of solution, then the being processed gas will be dried via stages. This invention utilizes various cooling and gas-liquid contact way flexiblely.

The invention discloses a production process of home textile velvet. The home textile velvet is formed by subjecting a double cloth comprising an upper base fabric, a lower base fabric and a pile warpto velvet pile and arrangement. The pile warp is connected with the upper base fabric and the lower base fabric, and is W consolidated through the upper base fabric and the lower base fabric. The pile warp is a natural fiber yarn. An upper base fabric weft yarn and a lower base fabric weft yarn are both functional yarns. An upper base fabric warp yarn and a lower base fabric warp yarn use naturalfiber yarns and functional yarns. The fineness of the ground warp is not restricted by the fineness of the pile warp. The fineness of the ground warp can be less than that of the pile warp, or can begreater than the fineness of the pile warp. The home textile velvet is very suitable for mass production. The production process can reduce the fineness of the pile warp to achieve a light and elegant purpose while ensuring the density of pile is not exposed to the ground. The home textile velvet comprises all natural fibers contacted by the human body, and functional yarns that are imparted by modern technology and cannot be contacted by the human body, which satisfies people's needs.

The invention relates to the field of treatment of oil field associated gas. In a method for recovering light hydrocarbon by an oil field associated gas membrane method, gas phase obtained by low-temperature separation is separated by a membrane and the liquid phase is fed into a deethanizing column for treatment; the treated gas phase is separated by the membrane and the liquid phase is fed into a liquefied gas tower for treatment; two paths of gas are formed after membrane separation; one path of gas is dry gas with barely pressure loss; C<3+> component in the gas is reduced to a certain extent compared with the raw gas, the gas is introduced into a cold box after the pressure and the temperature are reduced and delivered out as the dry gas after heat exchange; the other path of gas has pressure which is slightly higher than that of an inlet of a compressor; and the C<3+> component in the gas is richer than that of the raw gas, is returned to the inlet of the compressor and further compressed and condensed to recover the C<3+> component in the gas. The method and the system realize further recovery of the light hydrocarbon in the dry gas by increasing a small amount of investment and operation cost, so that the economy of the process and the quality of the dry gas are improved, black smoke is prevented during combustion, the environmental pollution is reduced, and the service life of a combustion nozzle is prolonged.

The invention discloses a flue gas desulfurization process for comprehensively utilizing hot waste gas of a circulation cooler in a sintering process, which comprises two main steps of washing and dedusting sintering flue gas produced by a sintering machine and performing cyclical absorption and desulphurization by absorption liquid. Sintering ore produced by the sintering machine is cooled by the recirculation cooler, a desulphurization rich solution produced in the step of the cyclical absorption and desulphurization of the absorption liquid is recycled through a regeneration tower, low-temperature hot waste gas produced in a low-temperature region of the recirculation cooler is conveyed to the regeneration tower, and the low-temperature hot waste gas is utilized to heat and decompose the desulphurization rich solution in the regeneration tower. The flue gas desulfurization process fully makes use of the hot waste gas resource of the circulation cooler, has the advantages of less energy consumption, low cost, simple operation and the like, and can effectively reduce the occurrence of phenomenon of flue gas condensation.

The invention discloses a natural gas hydrate preventing and controlling agent. The natural gas hydrate preventing and controlling agent comprises glycerol and / or a glycerol solution. The invention also discloses an application method of the natural gas hydrate preventing and controlling agent. The natural gas hydrate preventing and controlling agent can effectively solve the problem about inhibition or prevention and control of the natural gas hydrate when being applied to production as well as storage and transportation of the natural gas, can be used for exploiting the natural gas from the natural gas hydrate system or mineral resources, and also can be used for reducing the dew point of the natural gas and solving the problem that the natural gas flow channel is frozen and blocked; and the advantages and characteristics of easiness in implementation, wide application, easiness in popularization and the like are achieved.

The invention discloses a crankcase ventilation system of a supercharger front pre-mixing gas engine. The crankcase ventilation system is used in cooperation with an ECU of the engine and comprises anair inlet branch pipe, a crankcase, an air inlet pipe, an air filter, a mixer, a supercharger, an intercooler and a throttle valve. The position between the air filter and the crankcase communicateswith an air inlet device, and the position between the crankcase and the air inlet branch pipe communicates with a small-load exhaust device. The small-load exhaust device is further connected with alarge-load exhaust device, and the large-load exhaust device and the air inlet branch pipe are arranged in parallel. The air outlet end of the large-load exhaust device is in communication with the part, between the mixer and the supercharger, of the air inlet pipe. A ventilation method of the system is further disclosed. Air is guided into the crankcase from a pipeline in front of the mixer, thecontent of moisture in the crankcase is reduced, accordingly, the dew point of the oil-gas mixer in the crankcase is reduced, the condensation phenomenon cannot happen, condensing and gathering of water steam into engine oil in an oil sump are eradicated, and it is ensured that damage of a lubricating component of the engine due to engine oil deterioration is avoided.

The invention discloses a healthy comfortable energy-saving air conditioner which comprises a combined evaporator, a demisting chamber, a water and mist separating net, a water outlet, and a heat-exchange circulating device capable of providing heat exchange medium. A dehumidification heat conduction tube penetrates through lower portions of air inlet channels and air return channels, and the dehumidification heat conduction tube and an air outlet heat conduction tube are respectively connected to a heat-exchange circulation loop of the heat-exchange circulating device. A demisting chamber communicating inside air outlets and returned air inlets is arranged below the combined evaporator, the water and mist separating net for preventing direction communication of the inside air outlets and the returned air inlets is arranged inside the demisting chamber, and the water outlet is communicated with the demisting chamber. The temperature and the humidity of outlet air of the air conditioner can be controlled independently, an air-conditioning mode of 'mainly dehumidification and temperature reduction subsidiary' is realized, healthy and comfortable air with low humidity and suitable temperature is obtained, and environment-friendliness and energy conservation are realized. The invention further discloses an air treating method.

The invention provides a post-processing method for polypropylene powder, which belongs to the petroleum chemical field. In the polypropylene post-processing method of the prior art, the method comprises the following steps: polypropylene powder which departs from a polymerization system and is carried out preliminary gas / solid separation enters into a drier, indirectly heated through steam and nitrogen is introduced, hydrocarbons can be removed in powder and then enters in a steamer, nitrogen and water vapor are introduced for inactivation of a catalyst; or the polypropylene powder which departs from a polymerization system and is carried out preliminary gas / solid separation enters into a degassing chamber, water vapor-containing nitrogen is introduced in the degassing chamber; the present invention modifies the prior art. The post-processing method of the invention comprises the following steps: introducing water vapor, modifying the drier to a steam drier used for recovering hydrocarbons and inactivating the catalyst, introducing a hydrocarbons-removed polymer in the steam drier (or a degassing chamber), adding nitrogen without water vapor in the steam drier, modifying the steam drier to a moisture eliminator used for removing water vapor in powder. The method of the invention is capable of thoroughly recovering hydrocarbons which depart from the polymerization system by an economic method, reducing the unit consumption and energy consumption, and thoroughly solving the problem on environmental protection.

The invention discloses an aid for preventing and controlling a natural gas hydrate. The aid comprises a prevention and control agent and / or aqueous solution of the prevention and control agent, wherein the prevention and control agent is any one or a mixture of two or more of urea, disilicate, thiourea, dehydrogenated acetate and lactate according to any proportion. The aid can be used for the production and transportation of natural gas to solve the restraining or prevention and control problem of the natural gas hydrate effectively, and can be used for exploiting the natural gas from a natural gas hydrate system or mineral resources and lowering the dew point of the natural gas and solve the problems of freezing and blocking of a natural gas flow channel. The aid has the advantages of easy implementation, safety, reliability, low cost, easy popularization and the like.

The invention relates to a sprinkling open type absorption heat pump system capable of recycling the waste heat of the airflow containing moisture. The sprinkling open type absorption heat pump system capable of recycling the waste heat of the airflow containing moisture comprises an absorber, a generator, a condenser, a solution-water heat exchanger, a sprinkling device and a drive heat source. A flue gas inlet and a flue gas outlet are formed in the side surfaces of the absorber respectively. The sprinkling device is arranged above the flue gas inlet and located in the absorber. A dilute solution outlet formed in the bottom of the absorber is connected with a dilute solution inlet formed in the generator. A concentrated solution outlet formed in the generator is connected with a solution channel of the solution-water heat exchanger and the sprinkling device in sequence. One side of the generator is connected with the drive heat source. A steam outlet is formed in the top of the generator. The condenser is connected with the steam outlet of the generator. A water channel of the solution-water heat exchanger and a heat exchange tube of the condenser are communicated with cold water and a heat consumer installation respectively. According to the sprinkling open type absorption heat pump capable of recycling the waste heat of the airflow containing moisture, the high-temperature airflow containing moisture is made to enter the generator to be in direct contact with an atomization working medium sprinkled by the sprinkling device, so that heat and mass transfer is conducted; in this way, the heat exchanger coefficient is high, heat and water steam in the airflow containing moisture can be effectively recycled during heat exchange, the influence of the dew point of the airflow is avoided, the temperature of the airflow containing the humidity is greatly lowered, and the airflow containing the humidity is discharged out of the absorber.

The invention discloses an efficient air filter. According to the air filter, when air containing moisture enters cylindrical inclined holes, electrostatic dust removers are adopted to adsorb suspended particles in air by using the electrostatic adsorption principle, and dust collecting plates are driven by motors to clean dust adsorbed by the electrostatic dust removers; a water tank is arranged to further remove dust; a bent pipeline can prolong the filter time of air in water; by pumping of a pressure pump, water in the water tank is atomized through a mesh-shaped atomizing plate for spraying in the manner of multi-layer water mist so as to further filter and purify air. By adopting the air filter, humidity of air purified by water mist is increased, the dew point of water vapor compressed by a lobed rotor compressor is reduced, and moisture is coagulated and separated in a condensing pipe and flows out along the inclined holes; filtered air is dried, reaches the periphery of a filter paper cylinder, and enters a central cylinder after filtering, so that filter paper is prevented from being damped.

The invention discloses an antifeezing and anti-blocking method of a natural gas runner, which comprises the following steps: periodically adding antifreeze into the natural gas runner so as to reduce the dew point of the natural gas and the freezing point of the water in the natural gas runner, and prevent the water from freezing and blocking the natural gas runner. The invention can effectively solve the problems that the natural gas runner is frozen and blocked, mixed solid content formed by natural gas hydrate and ice block the natural gas runner, also can greatly reduce the dew point of the natural gas, cosmically simplify the productive process of the natural gas, particularly, cosmically simplify the natural gas ground surface gathering process, greatly reduce the cost of the natural gas production, energy consumption, gas self consumption, management working load, and the like, fundamentally eliminate methanol harm and pollution in the natural gas production, realize non alcoholization of the natural gas productive process, and has the advantages of easy implementation, safety and reliability, wide application, easy popularization and the like. The economic benefit, environmental protection benefit and safety benefit are remarkable.

The invention discloses a flue gas desulfurization process for comprehensively utilizing sintering flue gas. In the flue gas desulfurization process, a desulfurizing tower for absorbing sulfur dioxide and a regeneration tower for reclaiming desulphurization rich solution discharged by the desulfurizing tower are arranged; the sintering flue gas discharged by a sintering machine is conveyed to the regeneration tower, the sintering flue gas taken as a heat source indirectly heats the desulphurization rich solution in the regeneration tower to decompose the sulfur dioxide in the desulphurization rich solution, and an absorption liquid obtained after the desulphurization rich solution is regenerated is conveyed to the desulfurizing tower; and the discharged sintering flue gas in the regeneration tower is subjected to washing, dedusting and temperature reduction and then is sent into the desulfurizing tower, the sintering flue gas is subjected to cyclical absorption and desulphurization by the absorption liquid to obtain purified gas, and the purified gas is exhausted into atmosphere. The flue gas desulfurization process fully makes use of abandon resources, has less energy consumption, and low cost and can effectively reduce the occurrence of the phenomenon of flue gas condensation.

The invention relates to a coal gas combined purification tower. A vertical tower body sequentially comprises a coal gas cooling section, a tar removal section, a desulfurization section and a naphthalene removal section from bottom to top, which are connected with in series. The coal gas sequentially passes through the coal gas cooling section, tar removal section, desulfurization section and naphthalene removal section to implement purification. The coal gas section can further lower the coal gas temperature, enhance the adsorption effects of the desulfurizer and activated carbon, lower the dew point of the coal gas, reduce the moisture carried in by the previous section and avoid polluting the desulfurizer and activated carbon. The tar removal section can trap most tar fog carried in the coal gas, greatly lower the possibility of accumulation of the tar in the desulfurizer filler layer, prolong the service life of the desulfurizer filler layer and shorten the filler replacement period. The desulfurization section and naphthalene removal section are arranged in series to reduce the quantity and occupied area of equipment, enhance the production efficiency and lower the production cost.

The invention discloses an integrated system for industrial flue gas desulfurization and dewhitening and a method thereof. The integrated system comprises a desulfurization tower, a de-whitening unitand a flue gas heat exchanger; the desulfurization tower is provided with a first flue gas inlet and a first flue gas outlet, and the de-whitening unit is provided with a second flue gas inlet and a second flue gas outlet; the flue gas heat exchanger is configured for dividing-wall transmission of the heat of the industrial flue gas in an industrial flue gas conveying pipeline to the second flue gas outlet to discharged the dried gas, and then the industrial flue gas is send to the first flue gas inlet; the first flue gas outlet is in communication with the second flue gas inlet; the de-whitening unit is provided with a first circulation loop and a second circulation loop; a regeneration device is arranged at the first circulation loop; and a self-circulating heat exchanger is arranged onthe second circulation loop; wherein the type of self-circulating heat exchanger is a dividing wall heat exchanger and is used for cooling the absorbing liquid flowing therethrough. The integrated system and the method thereof have low heat energy consumption, and can reduce the dew point of the gas at the outlet.

The invention discloses an overhead gas heat preservation and antifreeze pipeline, which relates to electric heat tracing technology, and is used to solve the problem that the existing eddy current thawing technology is suitable for thawing after dew condensation and freezing in pipelines, and the antifreezing effect is not good for pipelines before dew condensation and freezing. Keeping the cable heated will inevitably cause a problem of energy waste. It includes an installation tank, a support structure, a water collection structure, a separation structure, and a delivery pipeline. Support structures are respectively provided on both sides of the upper surface of the installation tank, and a delivery pipeline is erected on the support structure. structure, the water collecting structure communicates with the separation structure and the conveying pipeline respectively, and the separation structure includes a front support frame, a hollow fiber membrane, and a rear support frame. The purpose of separating water vapor from gaseous C2, C3 and C4 is realized by using the difference in permeability and diffusion speed of gas components in the fiber membrane, and the dew point of the gas is lowered. The invention also provides a method for using the overhead gas heat preservation and antifreeze pipeline.

The invention relates to the field of nitrogen generation systems, in particular to a low-dew-point PSA nitrogen generation system. According to the technical scheme, the low-dew-point PSA nitrogen generation system is characterized in that the low-dew-point PSA nitrogen generation system comprises an air compressor, an air buffer tank, a C-level filter, a refrigeration dryer, a T-level filter, anA-level filter, a nitrogen generation device, a nitrogen buffer tank and a nitrogen storage tank which are sequentially connected through pipelines, and further comprises a nitrogen outlet pipeline and a nitrogen discharging pipeline; the nitrogen generation device comprises a first adsorption tower and a second adsorption tower; a three-way pipe is arranged on the A-level filter, and the A-levelfilter is connected with nitrogen inlets of the first adsorption tower and the second adsorption tower through the three-way pipe; the nitrogen inlets of the first adsorption tower and the second adsorption tower are both connected to the nitrogen discharging pipeline; nitrogen outlets of the first adsorption tower and the second adsorption tower are both connected to the nitrogen outlet pipeline; a silencer is arranged on the nitrogen discharging pipeline; and a heat-free adsorption-type dryer is further connected between the nitrogen buffer tank and the nitrogen storage tank through a pipeline. The low-dew-point PSA nitrogen generation system has the advantages that the nitrogen dew point can be decreased, and the nitrogen purity can be improved.

The invention discloses a blast furnace flushing slag flue gas whitening integrated device. The blast furnace flushing slag flue gas whitening integrated device comprises a shell and a hot air pipe, wherein a mixing zone is arranged inside the shell; a flue gas inlet, a flue gas outlet and a hot air inlet are formed in the shell; the flue gas outlet is formed above the mixing zone; the flue gas inlet and the hot air inlet are formed in the bottom of the mixing zone; and the hot air pipe is connected to the hot air inlet and is communicated with the mixing zone. Blast furnace flushing slag fluegas enters the mixing zone through the flue gas inlet, hot air enters the mixing zone through the hot air pipe, and the blast furnace flushing slag flue gas and the hot air are mixed in the mixing zone, so that the dew point of mixed flue gas is lowered, the dry-bulb temperature thereof is raised, no white smoke plume is emitted when the mixed flue gas is discharged, and the effect of eliminatingwhite fog is achieved; and meanwhile, the blast furnace flushing slag flue gas whitening integrated device is simple in structure, flexible in land occupation, low in implementation difficulty, low in investment and low in operating cost and has an important application value.

The invention discloses a device and a method of low temperature separation dehydration of a gas field well mouth. Three processes including depressurization, gas-liquid separation and dehydration are integrated, steam in natural gas is condensed into water mist or aquo-complex condensation nucleus by utilizing low temperature cold quantity produced by throttling; high speed gas flow after throttling is sent to a whirlcone of a low temperature separation device; and small water drops and the aquo-complex condensation nucleus in the water mist rotate in the whirlcone at a high speed and are thrown to an inner wall of a casing of the whirlcone under effect of centrifugal force to achieve gas-liquid separation. Compared with a method that the natural gas is overall heated before throttling by using a heating method or an inhibitor is added to block generation of the aquo-complex, the device of low temperature separation dehydration of the gas field well mouth has three functions of throttling, separation and dehydration; and with the adoption of the device, a dehydration device is removed and investment and administration expenses are greatly reduced.

The invention discloses a device and a method for treating carbon black tail gas and an application of the tail gas. The device comprises a carbon black tail gas pressurizing fan, a dehydration tower and a dehydrated tail gas fan, which are connected in sequence, wherein the upper part of the dehydration tower is further connected with a spraying water pump; the lower part of the dehydration tower is further connected with a circulating cooling water system; the circulating cooling water system is further connected with the spraying water pump; and the dehydration tower sequentially comprises a de-foaming device, a liquid distributor, a gas-liquid distributor and a gas initial distributor from top to bottom. According to the device disclosed by the invention, a lot of water in the carbon black tail gas can be effectively removed, the calorific value of the carbon black tail gas is improved, the dew point of the tail gas is reduced, the corrosion to equipment is relieved, harmful substances including carbon black dust are removed, the quality of the carbon black tail gas is improved, national energy conservation and emission reduction are met, and an industrial policy of the circular economy is developed; the device has obvious economic benefits and social benefits; and the treated carbon black tail gas replaces melted-down coal gas of a coke furnace and the replaced melted-down coal gas with the high calorific value is supplied for cities, so that effective and recycled utilization of resources is achieved.

Device for cool drying comprising a heat exchanger (2) whose primary part is the vaporizer (3) of a cooling circuit (4) which also comprises a compressor (6) driven by a motor (5), a control device (16) for this motor (5) and measuring means (17) for the lowest air temperature (LAT) , measuring means (18) for the ambient temperature (Tamb) and a flow meter (19), whereby this control device (16) can be at least switched in a first user mode in which the cooling circuit (4) is only activated when the gas flow exceeds a preset value and a second user mode in which the lowest air temperature (LAT) is maintained within a certain range by controlling the cooling circuit (4) .

A liquid ejection apparatus includes: a gas chamber surrounding a piezoelectric element in an inkjet head; and a dry gas supply device configured to start supply of dry gas to the gas chamber before supply of electric power to the inkjet head is started, to continue the supply of the dry gas while the supply of the electric power to the inkjet head is continued, and to halt the supply of the dry gas after the supply of the electric power to the inkjet head is halted. While the dry gas supply device halts the supply of the dry gas to the gas chamber, a dry gas supply flow channel opening and closing device is closed to disconnect the dry gas supply device and the gas chamber, and a gas return flow channel opening and closing device is closed to disconnect the gas chamber and the external air.

The invention discloses a deep dehydrating system device for natural gas. The device is characterized by comprising a filter separator, a first super-gravity machine, a condenser, a poor / rich liquor heat exchanger, a pressurizing pump, a buffer tank, a reboiler, a second super-gravity machine, a flash tank, a conveying pump, a first stop valve, a second stop valve, a third stop valve, a fourth stop valve, a fifth stop valve, a reducing valve, a flowmeter, a vacuum pump, a gas-liquid separator and a three-way valve. The invention discloses a dehydrating method. According to the device, the purity of regenerated triethylene glycol poor liquor can be improved to 99.99wt%. By using the triethylene glycol poor liquor as an absorbent, the water dew-point at the natural gas outlet after water absorption in an absorption system is reduced to be below 35 DEG C below zero, preferably 45 DEG C below zero. The problem that the dehydrating depth of natural gas in the absorption system is low as triethylene glycol is not high in purity is solved, and the dehydrating treatment demand on low water dew point natural gas is met.