114 results about "Steam line" patented technology

The invention discloses a steam pipeline pressure control method, which comprises the following steps of: acquiring operation information of each key position of a pipe network in real time by constructing a data acquisition system and deploying an execution unit; a multivariable analysis method is utilized, topological structure characteristics of a steam pipeline are combined, a load change model of a steam consumption unit is constructed, the pressure change process caused by operation of different devices is recognized in advance, and a long-term pressure control strategy is made; meanwhile, an accumulative deviation curve is constructed based on a prediction and actual measurement residual evolution sequence, the potential fault risk of the system is identified in an auxiliary manner, and structured alarm output is formed, so that the safety guarantee capability of pipe network operation is enhanced. The steam pipeline pressure control method is suitable for the application scene that the overall steam use requirement is stable, but the local high-frequency disturbance behavior exists, the tiny pressure fluctuation trend can be accurately predicted under the high-disturbance working conditions such as frequent starting and stopping, and it is guaranteed that the steam pressure is stable.

Described herein is an energy system (1) arranged to generate and use thermal energy, the energy system (1) comprising a mechanical vapor recompression (MVR) unit (3). The thermal energy of the working fluid is obtained during the MVR process performed by the MVR unit (3) and utilized outside the energy system, preferably for heating the process, space or object. The MVR unit comprises a main heat exchanger (5), a compressor (9), a main steam line (11) and a condenser (13). The MVR unit (3) preferably further comprises at least one liquid line (15) arranged to be connected to the condenser (13) and the main heat exchanger (5) for transferring condensed working liquid back to the main heat exchanger (5) for re-evaporation in the main heat exchanger (5). In one embodiment, the energy system (1) comprises at least one secondary heat exchanger (17) arranged for heat exchange between condensed working fluid flowing in the at least one liquid line (15) and external working fluid flowing in the at least one external fluid line (19) to use thermal energy generated by the MVR unit (3).

The utility model relates to the technical field of chute steam pipelines, and discloses an improved chute steam pipeline cut-off structure which comprises a chute pipe, a discharging pipe is fixedly connected to the top of the chute pipe, a limiting block is fixedly connected to the interior of the discharging pipe, a first connecting cylinder is fixedly connected to the interior of the limiting block, and a second connecting cylinder is fixedly connected to the interior of the first connecting cylinder. A sealing assembly for clamping is slidably connected into the first connecting cylinder, a second connecting cylinder is slidably connected to the outer portion of the sealing assembly, connecting rings are fixedly connected to the outer portion of the first connecting cylinder and the outer portion of the second connecting cylinder, and sealing grooves are formed in the outer portions of the connecting rings. And a fastening assembly for limiting is mounted outside the sealing assembly. According to the steam cutting-off device, through a linkage mechanism of the air cylinder, the push rod, the rack plate and the gear, when the air cylinder is started, the rotating pipe can be accurately driven to rotate, an inner channel of the second connecting cylinder is not communicated with a channel of the conveying pipe any more, and steam cutting-off is achieved.

The utility model discloses a high-temperature steam recycling device which comprises a direct heat exchange steam pipeline, an indirect heat exchange steam pipeline, a heat exchange condenser a and a cold medium pipeline, the direct heat exchange steam pipeline is communicated with a fine filter box, and a microporous membrane is arranged in the fine filter box. Steam output by the fine filter box is communicated with the mixing tank through an output pipeline and an indirect heat exchange steam pipeline, and the mixing tank is communicated with the heat exchange condenser a through a condensation pipeline. According to the high-temperature steam recycling device, alumina particles with the particle diameter larger than that of water vapor drop particles or aluminum hydroxide suspended solids which are not completely decomposed in steam are filtered and separated in a microporous filtering mode, the temperature of the alumina particles or the aluminum hydroxide suspended solids is increased in a compression mode, and the alumina particles or the aluminum hydroxide suspended solids are recycled through heat exchange and then enter the next condenser to be released, so that the temperature of the alumina particles or the aluminum hydroxide suspended solids is reduced; therefore, heat energy can be recycled, meanwhile, the recycling efficiency of condensate water can be improved, and waste of water resources and heat energy is avoided.

The application provides an air-cooled steam pipeline drainage system, which effectively solves the problems of noise emission, high temperature radiation and white steam diffusion in the drainage process, and has a significant role in environmental protection and urban beautification. The system comprises a drainage device connecting and installing pipeline, a steam-water connecting pipe, a steam-water guide pipe, an air-cooled sleeve pipe and a heat dissipation sleeve pipe. The output end of the second pipeline is located at the lower end cavity of the air-cooled sleeve pipe, the upper part of the steam-water connecting pipe is fixedly provided with the steam-water guide pipe, the lower segment of the steam-water connecting pipe and the steam-water guide pipe is located in the upper cavity of the air-cooled sleeve pipe, the upper segment of the steam-water guide pipe is inserted into the lower cavity of the heat dissipation sleeve pipe, the upper end of the steam-water guide pipe is annularly provided with a plurality of height-directional arranged openings, and the inner wall of the upper cavity of the heat dissipation sleeve pipe is provided with a plurality of layers of fins.

The invention relates to a device for generating steam, comprising a heat source (17) for heating water, a first flash device (1) in which water heated by transferring heat from the heat source (17) is partly evaporated, and at least one compressor (23) having at least one compression stage (25.1,25.2) for compressing steam, the compressor being connected to a steam chamber in the first flash device (1) via a first steam line (21). A second flash device (9) is included which is connected to the first flash device (1) via a first connecting line (7) and a second connecting line (13) in such a way that non-evaporated water is conducted from the first flash device (1) into the second flash device (9) through the first connecting line (7) and non-evaporated water is conducted from the second flash device (9) into the first flash device (1) via the second connecting line (13), the second connecting line (13) being equipped with the heat source (17) and a pump (15) by means of which the pressure of the water can be increased. A second steam line (27) branches off from the second flash device (9) and opens into the first steam line (21) upstream of the at least one compressor (23), and at least one compensation compressor (29) is provided in the second steam line (27). The invention also relates to a method for generating steam in such a device.

The invention provides a high-temperature steam pipeline running state detection method and system based on failure mode recognition. The method comprises the steps that real-time state data of a steam pipeline are acquired; performing feature extraction on the real-time state data to obtain real-time state features of the steam pipeline; inputting the real-time state characteristics into a preset failure mode recognition model, so that the failure mode recognition model recognizes a dominant failure mode of the steam pipeline according to the real-time state characteristics; extracting corresponding target features from a plurality of historical state data of the steam pipeline according to the type of the dominant failure mode; and inputting stress distribution characteristics in the real-time state characteristics and the target characteristics into a preset operation state detection model, so that the operation state detection model generates the current operation state and the residual life of the steam pipeline according to input data, and the accuracy of detecting the operation state of the high-temperature steam pipeline is improved.

The utility model belongs to the technical field of noodle processing equipment, and particularly relates to an automatic noodle cooking line which comprises a rack, a driving mechanism, a carrier, a cooking mechanism, a water cooling mechanism and a material receiving mechanism, the driving mechanism comprises a driving motor, a driving wheel, a driven wheel, a driving chain, a transmission shaft, a transmission wheel and a transmission chain. The cooking mechanism comprises a steam generator, a water inlet pipe and a steam pipe. The material receiving mechanism comprises a material receiving frame, a material receiving hopper and a material receiving pipe. The water-cooling mechanism comprises a water-cooling pump, a water pumping pipe, a water inlet main pipe and water-cooling branch pipes. According to the automatic noodle cooking line, the carrier is driven to the material receiving mechanism through the driving mechanism, the carrier moves downwards along the chain until the carrier faces downwards when passing through the position above the material receiving hopper, noodles in the carrier are discharged to the material receiving hopper due to the gravity effect and discharged to the next procedure through the material receiving pipe, the noodle discharging procedure is automatically completed, and the production efficiency is improved. And the working continuity of the noodle cooking line and the noodle cooking efficiency are improved.

A gas turbine engine including a core air passage, a combustor, and a steam line. The combustor is located in the core air passage and combusts hydrogen fuel producing combustion gases. The steam line is fluidly coupled to the core air passage at a position downstream of the combustor to receive a portion of the combustion gases. A conduit thermally coupled to an external surface of an aircraft may be fluidly coupled to the steam line to receive the combustion gases and to heat the external surface. The gas turbine engine may also include a water vapor condenser fluidly connected to the steam line to receive the combustion gases and to condense the water vapor of the combustion gases. At least one nozzle may be fluidly coupled to the water vapor condenser to inject the condensed water into the core air passage.

The utility model discloses a waste heat recovery system for an instant noodle factory. The waste heat recovery system comprises a first ejector, a frying line, a first flash tank, a second ejector, a second flash tank, a noodle steaming line and a heat exchanger, a branch pipeline is arranged at the high-pressure front end of the main pipeline and is connected with a first flash tank; a steam outlet of the first flash tank is connected with an ejection opening of a first ejector; one pipeline outlet of the main pipeline is connected with a high-pressure inlet of the first ejector, and an outlet of the first ejector is connected with the frying line; another pipeline outlet of the main pipeline is connected with a high-pressure inlet of the second ejector, an outlet of the second ejector is connected with the noodle steaming line, and an outlet of the noodle steaming line is connected with the heat exchanger. The waste heat recovery device has the advantages that waste heat of high-temperature condensate water of 0.8 Mpa is fully utilized, direct discharge is avoided, and a large amount of energy is recovered; waste heat of 1.2 Mpa high-temperature and high-pressure hot water is fully utilized, and low-pressure steam is generated; the pressure energy of high-pressure steam is fully utilized, and pressure reduction is not needed.

The present application relates to the technical fields of synthetic ammonia waste heat recovery, in particular to a multi-stage waste heat boiler heat recovery device and a switching method, wherein the heat recovery device is connected with a 1.3MPa waste heat boiler, the 1.3MPa waste heat boiler is connected with a first water separator, the first water separator is connected with a first 0.5MPa waste heat boiler and a second 0.5MPa waste heat boiler, the first 0.5MPa waste heat boiler and the second 0.5MPa waste heat boiler are connected with a second water separator, the 1.3MPa waste heat boiler is connected with a 1.3MPa steam pipe network, the 1.3MPa steam pipe network is connected with a high-temperature heater, a low-methane separation tower reboiler and a 1.3MPa-0.5MPa steam pipeline, and the 1.3MPa-0.5MPa steam pipeline is connected with a 0.5MPa steam pipe network. The heat recovery device can convert part of low-quality steam into high-quality steam, fully utilize the waste heat of the shift gas, and realize the online switching of the 1.3MPa waste heat boiler through the control of the temporary temperature and pressure increasing pipeline and the guide valve.

A steam assisted gravity drainage (SAGD) system having a hub module operatively coupled to a pipe rack module. The pipe rack module having a first side and a second side. An injection module operatively coupled to the pipe rack module. The injection module providing a high pressure steam via at least one high pressure steam line to an injection well. A production module operatively coupled to the pipe rack module. The production module receiving an emulsion into a produced emulsion line from at least one production well. The hub module permits the injection module to be located on either the first side or the second side of the pipe rack module and the production module to be located on either the first side or the second side of the pipe rack module.

The utility model provides an energy -conserving rectifying device, including raw material conveying pipeline, raw material conveying pipeline connects high pressure tower, low pressure tower respectively, high pressure tower connects high pressure tower reboiler, high pressure tower reboiler connects steam generator, steam generator still connects low pressure tower reboiler, low pressure tower reboiler connects low pressure tower, the top of high pressure tower is connected high pressure tower overhead cooler through cooling pipeline, high pressure tower overhead cooler connects tower top re -cooler, tower top re -cooler connects high pressure tower tank pump, high pressure tower tank pump connects tower top product output pipeline. High pressure tower overhead cooler is connected low pressure tower through steam pipeline. The utility model sets up low pressure tower, uses in combination with high pressure tower, carries out the secondary full use to the heat of rectification product of high pressure tower tower top output, saves the energy.

The utility model relates to the technical field of cracking gas separation, in particular to a cracking gas condenser heat exchange system. The cracking reactor is connected to the cracking gas condenser; the reaction liquid intermediate tank is connected with the cracking gas condenser; the component separation tower is connected with the reaction liquid intermediate tank; the hot water pipe network is connected to the cracking gas condenser; a steam pipeline is connected with the cracking gas condenser, the steam pipeline is connected to a hot water pipe network, and an adjusting valve group is arranged on the steam pipeline; the steam condensate flash tank is connected with the steam pipeline through a steam inlet pipeline, and the steam inlet pipeline is provided with a first valve; the steam pipe network is connected with the steam condensate flash tank; and the steam condensate delivery pipeline is connected with the steam condensate flash tank. According to the utility model, the water attack phenomenon caused by two-phase flow mixing is avoided, and the process operation stability is improved.

The invention discloses an electric heating assisted high-voltage energy storage system and a control method thereof, and belongs to the technical field of energy storage. The system comprises an energy storage tank filled with an aqueous solution, an electric heater and a steam pipeline, the energy storage tank is connected with the output end of the steam pipeline, and the output end of the steam pipeline is connected with the bubbler and arranged in the energy storage tank. The bubbler is positioned below the liquid level of the aqueous solution; steam enters the energy storage tank through a bubbler at the output end of the steam pipeline to pressurize and heat the water solution; an electric heater is arranged in the energy storage tank and used for pressurizing and heating the water solution in the energy storage tank. The electric heater is arranged in the energy storage tank, the generated steam pressure can be increased, a large amount of steam is provided when the unit load is large, and the situation that the unit steam is insufficient or parameters cannot meet the requirements is avoided.

The invention discloses a pressurized water reactor nuclear power unit power adjusting system and method, and belongs to the technical field of pressurized water reactor nuclear reactors, the system comprises a pressurized water reactor nuclear steam supply system and a bypass system arranged on a steam generator secondary side steam pipeline of the pressurized water reactor nuclear steam supply system; wherein the bypass system comprises a steam bypass subsystem, a composite material heat storage subsystem and an air power generation subsystem; the steam bypass subsystem is used for introducing excess steam in the pressurized water nuclear reactor nuclear steam supply system into the composite material heat storage subsystem for heat energy storage, and the air power generation subsystem absorbs the heat energy stored in the composite material heat storage subsystem through compressed air to drive a turbine to generate power. Under the condition that the operation power of the nuclear reactor is not changed, the steam heat energy of the bypass steam turbine is stored in a mode of sensible heat energy of the composite material, the problem of mismatching between power supply and power demand is solved, and power adjustment of the pressurized water reactor nuclear power unit is achieved.

The invention relates to the technical field of high-temperature and high-pressure medium discharge noise reduction, and particularly discloses a high-temperature and high-pressure steam-water discharge noise reduction system for a reactor voltage stabilizer. The noise reduction system comprises a pressure stabilizer and a steam-water separator, an outlet of the pressure stabilizer is connected with an inlet of the steam-water separator through a steam-water pipeline, the upper portion of the steam-water separator is connected with the pressure container through a steam pipeline, and the lower portion of the steam-water separator is connected with the open water tank through a first liquid pipeline. The multi-stage depressurization silencing device is composed of a first-stage depressurization silencer, a second-stage vortex type silencing cabin and a third-stage microplate silencer which are connected in series, a generator is arranged between the second-stage vortex type silencing cabin and the third-stage microplate silencer, a porous discharge pipe is arranged in the pressure container, and an inlet of the porous discharge pipe is connected with an outlet of the third-stage microplate silencer. By means of the system, safe noise reduction discharging of high-temperature and high-pressure liquid water in the pressure stabilizer can be achieved, and meanwhile energy of high-temperature and high-pressure steam can be efficiently and reliably recycled.

The utility model relates to the technical field of wine brewing equipment, and provides a rice husk steaming device which comprises a rack main body, a rice husk bin, a steam conveying pipeline, an exhaust pipeline and a pneumatic hammer pipeline, the chaff bin is arranged on the rack main body, a feed port is formed in the top of the chaff bin, a discharge port and a steam inlet are formed in the bottom of the chaff bin, and the steam conveying pipeline is connected with the steam inlet; the exhaust pipeline is communicated with the rice husk bin and is used for exhausting gas in the rice husk bin; the pneumatic hammer pipeline is arranged on the rack, and an air outlet of the pneumatic hammer pipeline is formed in the rice husk bin and is close to the discharging port. According to the utility model, the steam pipeline is arranged at the bottom of the rice husk bin, so that steam is used for steaming from bottom to top, the contact time of materials and the steam is prolonged, the whole rice husk bin is a closed environment, and the utilization rate of the steam is improved; and therefore, auxiliary scattering operation is realized by outputting pulse high-pressure gas during discharging, and the material is prevented from blocking a discharge port.

The utility model provides an automatic drainage device of a steam pipeline, which comprises a DN800 steam pipeline, the DN800 steam pipeline is communicated with a water inlet of a water collecting tank through a first condensate water drainage pipe, a temperature measuring point A and a temperature measuring point B are arranged in the water collecting tank, and the temperature measuring point A and the temperature measuring point B are communicated with a temperature controller; the temperature controller is used for controlling the electric switch valve, the function requirement for automatic drainage of the steam pipeline is met, economy and reliability are achieved, and leakage of pipeline steam during drainage can be reduced. The water collecting tank is installed on the horizontal drainage pipeline, the action frequency of the switch valve is reduced, steam leakage is reduced, the net-shaped grating is arranged in the water collecting tank, the blow-down valve is installed at the bottom of the water collecting tank, dirt in the water collecting tank can be cleaned regularly, and the influence of the dirt in the steam pipeline on the switch valve is reduced.

A reaction system for the synthesis of methanol from a make-up gas comprising hydrogen and carbon dioxide, comprising a catalytic converter and a steam system wherein the converter comprises at least one internal heat exchanger connected to the steam system and arranged to generate steam using heat of a methanol synthesis reaction, wherein the steam system comprises a steam drum separate from the converter, the steam drum is connected to the heat exchanger via a water inlet line to supply water to the heat exchanger and collects steam formed in the heat exchanger via a steam line, and wherein the steam system comprises an electric heater mounted inside the steam drum, and the electric heater is arranged to heat the feed water sent to the converter.

The utility model discloses a kind of anti-drop devices for steam pipeline, steam pipeline bottom is fixed with pipe support, pipe support is configured with the pipe support beam that it supports, anti-drop device includes: supporting component, it is arranged along the length reverse extension of steam pipeline, for supporting pipe support, the length of supporting component in the length direction of steam pipeline is greater than the length of pipe support;Limiting portion is formed on supporting component, for limiting pipe support;Fixed component is fixedly connected on supporting component, and the clamping portion with bottom opening is formed on fixed component, and clamping portion is used for clamping pipe support beam;Locking assembly is assembled on fixed component, is blocked in opening, for connecting fixed component and pipe support beam.The anti-drop device for steam pipeline proposed in the utility model can effectively support pipe support, and pipe support is hardly dropped when steam pipeline moves in small distance, greatly reduces the probability of pipe support due to moving drop, improves the security of use.

This application discloses a steam regulating valve assembly for a polycrystalline silicon differential pressure coupled distillation column. The steam regulating valve assembly is installed on the steam pipeline to regulate the amount of steam entering the reboiler. The steam regulating valve assembly includes: a main regulating valve unit, which is installed on the steam pipeline and has a first through-hole, and is used to regulate the flow rate of the main steam during the stable operation phase of the distillation column; and an auxiliary regulating valve unit, which is also installed on the steam pipeline and has a second through-hole, which is smaller than the first through-hole, and is used to perform micro-flow control of steam during the start-up phase of the distillation column.

The utility model discloses a catalytic cracking slurry oil processing system which comprises a catalytic cracking device, a gasification unit, a conversion unit and an acid removal unit, an outlet of the catalytic cracking device comprises a gas conveying pipeline and a catalytic slurry oil conveying pipeline, and the catalytic slurry oil conveying pipeline is connected with a slurry oil storage tank through a pipeline. The gasification unit, the conversion unit and the acid removal unit are sequentially connected through pipelines with stop valves, a feed port of the gasification unit is connected with a second pipeline for conveying oil residues, a third pipeline for conveying oxygen and a steam pipeline for conveying steam, and an oil slurry storage tank is connected to the second pipeline through a first pipeline with a catalytic oil slurry conveying pump; an outlet of the acid removal unit is provided with a fifth pipeline used for outputting flash steam and a sixth pipeline connected with an adsorption separation unit, the sixth pipeline is connected with a stop valve used for conveying high-quality hydrogen, and the oil residue catalytic cracking device has the technical characteristics that the high-quality hydrogen can be produced after the oil residue catalytic cracking device is used for processing, the economic benefit is remarkable, and the like.

The utility model discloses a composite two-stage core flat plate type loop heat pipe evaporator and a loop heat pipe system, and relates to the technical field of heat dissipation, the composite two-stage core flat plate type loop heat pipe evaporator comprises an evaporation mechanism and a loop pipeline mechanism, the evaporation mechanism comprises an evaporator upper shell, an evaporator lower shell, a first-stage liquid absorption core and a second-stage liquid absorption core, the evaporator upper shell is of a flat plate type cavity structure, and the loop pipeline mechanism comprises a first steam pipeline, a second steam pipeline, a third steam pipeline, a stainless steel ferrule type elbow, a liquid pipeline and jacket type condensing equipment. Efficient heat dissipation of a high-heat-flux and complex heat source environment is achieved, the heat transfer performance and stability of the loop heat pipe system are remarkably improved, and the loop heat pipe system can be widely applied to the fields of electronic equipment heat dissipation, spacecraft thermal control, industrial thermal management and the like.

The utility model discloses a multi-type combined crystallization system. Comprising a steam line, a plurality of heaters and a plurality of separators, the steam line comprises a plurality of steam branches, each steam branch is provided with a first control valve, a second control valve is connected between each steam branch and a steam loop, and a third control valve is arranged on the steam loop between the adjacent heaters or separators. The first control valve can independently control opening and closing of each steam branch, and after the first control valve controls opening and closing of a certain heater and separator, the second control valve and the third control valve are matched with the first control valve to enable steam to flow out of the steam loop, so that an operator can control the steam branch to flow out according to specific process requirements. And the heater or the separator or the combination of the heaters or the separators is selected to carry out crystallization work, so that the device can be suitable for various different crystallization processes and production scenes.

To provide a method of pre-operational cleaning of water and steam systems in combined cycle power plants.SOLUTION: Provided is a method comprising: performing a pre-operational initial flushing and chemical cleaning operation on a water and steam system of a combined cycle power plant (1); starting a gas turbine engine (2) and test-driving it; and performing a validation steam blow procedure including a steam blow operation during test-driving of the gas turbine engine, wherein steam is generated in an HRSG (3), the steam is flowed to a part of a closed flow circuit, and steam-carrying components of the HRSG and steam lines (39-51) connecting the HRSG to a steam turbine system (4) are cleaned, wherein the steam is routed to bypass the steam turbine system via operational bypass lines (52-54), without using any temporary piping, and is discharged to a condenser (6); and monitoring and validating cleanliness of selected steam-blown steam lines (39-54).SELECTED DRAWING: Figure 1

The present invention discloses a secondary side residual heat removal system for a small pressurized water reactor, which includes a first loop and a second loop that are independent of each other. The first loop and the second loop respectively include a steam generator, a main steam pipeline, redundantly provided main steam isolation valves, a condenser, a drain tank, redundantly provided condensate suction pumps and check valves, redundantly provided main feed water isolation valves, main feed water check valves and main feed water pipelines that are connected in sequence; and three independent power supply sequences A, B, and C. Among them, the power supply sequences A and B respectively supply power to the redundantly provided main steam isolation valves, the redundantly provided condensate suction pumps and check valves, and the redundantly provided main feed water isolation valves in the first loop and the second loop, and the power supply sequence C is a redundant power supply sequence shared by the power supply series A and B.

The invention belongs to the technical field of reactor thermal hydraulic tests, and particularly relates to a test system for simulating the passive safety injection process of a full-pressure water replenishing tank under a water loss accident. The system comprises a pressure vessel simulation body, a full-pressure water replenishing tank simulation body and steam generation equipment, the top and the bottom of the full-pressure water replenishing tank simulation body are respectively connected with the pressure vessel simulation body through a balance pipeline and a safety injection pipeline; the height difference between the full-pressure water replenishing tank simulation body and the pressure vessel simulation body is consistent with that of the prototype; the top of the full-pressure water replenishing tank simulation body is also connected with steam generation equipment through a steam pipeline, and measurable steam flow is provided through the steam generation equipment; a steam pipeline adjusting valve is connected to the steam pipeline in series. According to the embodiment of the invention, the transient process boundary conditions of the full-pressure water replenishing tank are constructed, the water-water circulation mode and the steam water circulation mode of the full-pressure water replenishing tank are simulated, and the fluid flow characteristics in the safety injection process of the full-pressure water replenishing tank and the safety injection characteristics under different conditions can be inspected.

The utility model belongs to the technical field of steam pipeline equipment, and relates to an anti-freezing energy-saving superheated steam pipeline which comprises a steam main pipe, a direct discharge pipe is led out of the steam main pipe and connected to a heat preservation pool, a root valve and a direct discharge valve are respectively arranged on the direct discharge pipe, a drain pipe is led out of the direct discharge pipe, a steam trap is arranged on the drain pipe, and the root valve and the direct discharge valve are connected to the heat preservation pool. A stirring fan and an electric heating wire are arranged in the heat preservation pool; and outlet pipes are arranged on two sides of the heat preservation pool. According to the utility model, the problem of freezing of the steam pipeline in a low-temperature environment is effectively prevented, meanwhile, the energy-saving effect is realized through the matching of the electric heating wire and the stirring fan, and the operation efficiency and the safety of the steam pipeline are improved.

The utility model relates to the technical field of chemical engineering, in particular to a fluidized bed residual oil hydrocracking device fractionating tower coking treatment system which comprises a fractionating tower, an atmospheric tower hot feeding line, a fractionating tower outlet line, an atmospheric wax oil circulation line, a circulation branch line, a diesel oil extraction line and an inlet steam line which are connected to the atmospheric wax oil circulation line, a normal-pressure wax oil collecting tank is arranged in the fractionating tower; a hot feeding line of the atmospheric tower is connected to an inlet of the fractionating tower; one end of the fractionating tower outlet line is connected with an outlet of the fractionating tower, the other end of the fractionating tower outlet line is connected with an inlet of the normal-pressure wax oil stripping tower, a tower inlet valve is arranged on the fractionating tower outlet line, a first bypass pipeline is arranged on the tower inlet valve, and a valve group is arranged on the first bypass pipeline. A normal-pressure wax oil collecting tank of a fractionating tower is forwards or reversely cleaned by introducing a diesel oil extraction line, and the normal-pressure wax oil collecting tank of the fractionating tower can be reversely cleaned by introducing an inlet steam line, so that the problem of coking and blockage of the normal-pressure wax oil collecting tank is solved.