390results about "Steam separation arrangements" patented technology

The invention belongs to the technical field of fused salt energy storage, and particularly relates to a thermal power generating unit deep peak shaving system and method of a fused salt heat storage coupling high-temperature heat pump. In the high-generation time period of renewable energy sources, the load of a thermal power generating unit needs to be reduced, at the moment, a boiler operates at the lowest stable combustion load, a fused salt heat storage system is added, all main steam is extracted to enter the heat storage system to heat fused salt, a high-pressure cylinder of a steam turbine is stopped, and an intermediate-pressure cylinder and a low-pressure cylinder of the steam turbine operate under the low-load working condition; the output load of the unit only meets the plant power, and the load is not output to the power grid; in the load rising time period, heat stored by the fused salt heat storage system is used for generating steam in the unit load rising stage to increase the unit steam turbine load rising rate and peak power generation; the problems of operation safety and low energy grade in the unit peak regulation process are solved. In the peak period of electricity utilization, heat stored in the fused salt heat storage system is released into the unit, and the output load of the unit is rapidly increased. An outlet of the deaerator serves as a water taking point, part of supplied water is extracted to pass through the preheater, the evaporator and the superheater to generate high-temperature and high-pressure steam, the high-temperature and high-pressure steam enters a high-pressure cylinder of the steam turbine to do work, and therefore the output load of the steam turbine is rapidly increased. The invention provides a thermal power generating unit deep peak regulation system and method of a fused salt heat storage coupling high-temperature heat pump, and aims to realize deep peak regulation of a unit and power generation by absorbing renewable energy sources such as wind and light.

The invention provides an integrated vehicle-mounted steam-injection boiler with high maneuvering characteristics and a using method of the integrated vehicle-mounted steam-injection boiler. The integrated vehicle-mounted steam-injection boiler comprises a steam-injection boiler pressed assembly, an auxiliary system and a carrying tool, and the steam-injection boiler pressed assembly and the auxiliary system are arranged on the carrying tool; and the carrying tool is used for driving the steam-injection boiler compression assembly and the auxiliary system to move. The components are integrally arranged, so that the vehicle-mounted steam injection boiler can form a complete independent working unit from water supply to steam production, the dismounting workload in the steam injection transition and movement process is reduced, a carrying tool with a good suspension system is adopted, and the vehicle-mounted steam injection boiler is convenient to use. And the vehicle-mounted steam-injection boiler has good field driving capability and maneuverability.

The invention discloses an evaporation and overheating integrated heat exchanger and a superheated steam generation method.The heat exchanger comprises a horizontal shell and a partition plate arranged in the shell and provided with evaporation holes, the partition plate divides the shell into an evaporation cavity and an overheating cavity, and a first heating assembly is arranged in the evaporation cavity of the shell; the second heating assembly is arranged in the overheating cavity of the shell, and the liquid inlet and the steam outlet are formed in the upper portion and the lower portion of the same end of the shell. During use, water is guided into the evaporation cavity through the liquid inlet; starting the first heating assembly and the second heating assembly; the first heating assembly is used for heating water in the evaporation cavity to generate steam; steam enters the overheating cavity through the evaporation holes and is output through the steam outlet after being heated into superheated steam by the second heating assembly. The device is small in occupied area, compact in structure and small in pressure loss in the steam evaporation process; the partition plate is creatively used as the gas-liquid separator, and an independent gas-liquid separator is not needed. Therefore, the evaporation efficiency is high, and the quality of the generated steam is good.

The invention relates to the technical field of high-efficiency recovery of low-temperature exhaust gas, in particular to a high-temperature cooking waste heat recovery system for white spirit brewing. The white spirit brewing high-temperature cooking waste heat recovery system comprises a cooking barrel, a compressor, an embedded plate heat exchanger, a condensate water tank and a circulating pump, a liquid inlet of the cooking barrel is communicated with one end of a water supplementing pipe, an air inlet of the compressor is communicated with a waste gas outlet of the cooking barrel, and the compressor is used for compressing steam to obtain high-temperature and high-pressure steam. A steam inlet of the embedded plate heat exchanger is communicated with an air outlet of the compressor, and a steam outlet of the embedded plate heat exchanger is communicated with a steam inlet of the cooking barrel through a steam conveying pipe. By adopting the arrangement mode, waste heat steam is utilized twice to recover heat, high-efficiency energy utilization can be realized, energy consumption and carbon emission are reduced, and meanwhile, the cooking efficiency and the grain quality are improved.

The invention discloses a steam-water separator, which belongs to the technical field of steam-water separation and comprises a separator main body, an upper end socket is arranged at the upper end of the separator main body, and a lower end socket is arranged at the lower end of the separator main body. A spiral separation guide plate is used for primary separation of steam and water, an inclined partition plate is matched with an auxiliary separation structure for further separation of the steam and water, the steam and water separation effect is improved, and the steam quality is improved, a cooling guide assembly and a centrifugal assembly are arranged in the auxiliary separation structure, and steam and water blown out of a separation inner sleeve form acting force on steam turbine blades; the steam turbine blades rotate to apply centrifugal force, so that part of steam and water are diffused all around, part of steam and water penetrate through the steam turbine blades to make contact with the condensation guide assembly, the steam and water separation efficiency can be improved, meanwhile, water drops on the condensation guide assembly are blocked, the water drops are prevented from falling off from the separation inner sleeve, and normal conveying of steam and water cannot be affected; and the separation efficiency is further guaranteed.

The utility model discloses a steam-water separation device for a steam boiler, which comprises a barrel body, an upper cover is arranged at the top of the barrel body, an inserting barrel is welded on the outer wall of the bottom of the upper cover, an inclined plane is arranged at the bottom of the inserting barrel, a vertical pipe is welded on the outer wall of the bottom of the inclined plane, a spiral plate is welded on the outer wall of the vertical pipe, and an air outlet is arranged on the outer wall of one side of the inserting barrel. And a fixing mechanism is arranged between the upper cover and the cylinder body. According to the steam-water separation device, the inserting barrel is inserted into the barrel body, the spiral plate is fixed with the vertical pipe at the bottom of the inserting barrel, and when the interior of the steam-water separation device needs to be cleaned, the inserting barrel can be taken out of the interior of the barrel body, and the spiral plate is moved out of the barrel body, so that the interior of the steam-water separation device can be conveniently cleaned and maintained.

The invention discloses a drainage flash heat supply system of a once-through boiler under low load and an operation method of the drainage flash heat supply system. The drainage flash heat supply system comprises a drainage flash control valve, a drainage flash tank, a heat supply steam throttle valve, an electric heater and a condensation drainage recirculation pump which are sequentially arranged behind a water storage tank. When a unit undertakes a peak regulation task and a boiler enters a wet state operation mode under an ultra-low load working condition, drain water generated by a steam-water separator is introduced into a flash evaporation heat supply system, generated high-pressure steam is used for industrial heat supply, the steam meets the requirements of pressure and superheat degree of industrial steam through a throttling valve and an electric heater, and the heat supply efficiency is improved. The drain water produced in the flash tank is re-introduced into the feed line through a condensed drain water recirculation pump. According to the system, power supply and heat supply can be decoupled during low-load operation of a unit, meanwhile, the stable combustion requirement of boiler operation is met, and the hydrodynamic safety of each water cooling wall is protected.

The invention discloses a rapid peak and frequency regulation system and method for a coal-fired unit with a regenerative system coupled with high-temperature working medium for heat storage, and relates to the technical field of conventional heating power and electricity technologies and energy storage, and the rapid peak and frequency regulation system comprises a coal-fired unit thermodynamic cycle system and a high-temperature working medium heat storage system, the high-temperature working medium heat storage system is deeply coupled with a thermodynamic cycle heat regeneration system of the coal-fired unit, and rapid combined peak regulation and frequency modulation of the unit are achieved by reducing the steam extraction amount of each stage of a steam turbine and cooperating with energy supply of the high-temperature working medium heat storage system. Firstly, when the unit needs to rapidly increase the load, rapid increase of the power generation output of the unit is achieved by reducing the steam extraction amount of each stage of a steam turbine, and meanwhile, high-temperature and high-pressure saturated water stored in a high-temperature working medium heat storage tank generates a certain amount of saturated steam through pressure reduction to replace steam extraction of each stage of the steam turbine to heat boiler feed water in a regenerative system; therefore, the water supply temperature of the boiler is kept unchanged or increased, and the variable load response capability of the coal-fired unit is quickly improved.

The utility model relates to the technical field of waste heat recovery, in particular to a waste heat boiler steam condensate recovery device which comprises a tank body, a discharge pipeline arranged at the top of the tank body, a steam pipeline communicated with the tank body and a backflow pipeline communicated with the bottom of the tank body. The periphery of the condensation plate is in contact with the inner wall of the tank body, and air holes are formed in the condensation partition plate; the connection position of the steam pipeline and the tank body is lower than the condensation partition plate. According to the utility model, the problem that secondary steam discharged by the blowdown expander can be directly discharged into the atmosphere to form loss is solved.

The utility model relates to a device for preventing a low-pressure evaporator of a waste heat boiler from being damaged due to fluid acceleration, which comprises an upper header, a finned tube and an ascending tube which are arranged in a steam-water separation area of the low-pressure evaporator of the waste heat boiler, and is characterized in that a fixed hanging lug plate is arranged in the steam-water separation area of the low-pressure evaporator of the waste heat boiler; the upper collecting box, the finned tube and the ascending tube are welded into a whole through the fixed hanging lug plate, so that a first rigid bending-resistant, deformation-resistant and displacement-resistant structure is formed; and the fixed hanging lug plate is fixedly connected to the boiler wall of the waste heat boiler to form a second rigid bending-resistant, deformation-resistant and displacement-resistant structure, namely, a dual-rigid bending-resistant, deformation-resistant and displacement-resistant structure. The device can solve the problem of leakage caused by damage of the waste heat boiler arranged on the 9F combined cycle unit, and has the substantive characteristics and technical progress that the vibration resistance, deformation prevention and leakage prevention capabilities of the high-pressure evaporator and the low-pressure evaporator of the waste heat boiler arranged on the combined cycle unit are improved, and pipe explosion and leakage caused by fluid acceleration damage of the low-pressure evaporator of the waste heat boiler are prevented.

The invention discloses a tubular energy-saving boiler which solves the problem that steam generated by an existing boiler is high in humidity. A gas burner is mounted in the hearth; a water collecting tank is arranged at the bottom of the hearth and is externally connected with a make-up pump; a space occupying rod is arranged in the heat exchange pipe, the evaporation box is located in the hearth, the water surface in the evaporation box is a steam-liquid interface, and saturated steam continuously enters the steam-water separation pipe. A bent pipe part is arranged in the steam-water separation pipe, a hole is formed in the low point of the bent pipe part, and the bent pipe part is connected back to the evaporation box through a return pipe for primary steam-water separation; a flow guide pipe is installed at the upper end opening of at least half of the steam-water separation pipe, steam is sprayed out at a high speed in the tangent and horizontal direction, vortex type steam is formed under guiding of the flow guide pipe, and secondary steam-water separation of the steam is achieved. When low-quality steam passing through the steam-water separation pipe passes through the structure, thermal movement of steam molecules enables the steam molecules to collide with one another, collide with the pipe wall, condense and the like to form mist-shaped micro water drops and flow back, and the steam quality of the boiler is improved.

The invention discloses a water-vapor separation high-temperature steam boiler, which relates to the technical field of steam boilers, and comprises a water-vapor play prevention mechanism, an evaporation chamber, a condensing device, a driving device and a combustion device, the condensing device exchanges heat with high-temperature flue gas, preheats water entering the evaporation chamber, reduces thermal stress, and improves the combustion efficiency. The water vapor moving prevention mechanism controls a water vapor flowing path in the evaporation chamber, so that more sufficient wall-attached flowing or disturbance flowing of water is formed in the evaporation chamber, the heat exchange area of water and the inner wall of the evaporation chamber is increased, the water is promoted to rapidly absorb heat and evaporate, meanwhile, an ascending path of water vapor in the boiler is prolonged, and the heat exchange efficiency is improved. And the retention time and evaporation time of water are prolonged in a limited boiler space, so that the water in the steam can be heated and evaporated more sufficiently, the content of the water carried in the steam is reduced, the dryness and output temperature of the steam are improved, and the energy-saving and water-saving effects in the boiler operation process are achieved.

The invention provides a supercritical circulating fluidized bed unit dry and wet state automatic conversion and whole-course water supply control system and method, and belongs to the technical field of automatic control. The problems of low automatic input rate, complex and difficult wet state control strategy, large dry and wet state conversion disturbance, load control breakpoints and the like in once-through boiler feed water control in the deep peak regulation coordinated variable load process of the unit are solved; the main steam flow is corrected by introducing the enthalpy value of the last-stage superheater and the enthalpy value of the outlet of the separator on the basis of a self-balancing water supply control strategy, the heat released / absorbed by the boiler is dynamically reflected, the balance of the heat load and the evaporation capacity of the boiler is guaranteed, and meanwhile the boiler bed temperature and the wall temperature of a certain area of the boiler are corrected in real time; according to the method, the same set of control strategy is adopted for water supply control in the dry state and the wet state of the boiler, and switching and transformation of water supply control modes are not needed. Meanwhile, power control and dry-wet state conversion control are combined, and continuous power control in the dry-wet state conversion process is achieved.

To stabilize the water quality of boiler water in a boiler, thereby preventing the generation of carry-over in which a large amount of boiler water is mixed into generated stream, corrosion of each part of a can body, and an overheat state of a heat transfer surface due to the adhesion of scale to a can wall surface.SOLUTION: A method of stabilizing the water quality of boiler water in a boiler is provided. A water supply pump for supplying the boiler water to the boiler is intermittently operated. Whenever the water supply pump is intermittently operated, blow operation for discharging the boiler water to the outside of a can is performed.SELECTED DRAWING: Figure 2

The invention relates to the field of oil field steam injection boiler equipment, in particular to a high-capacity subcritical coal-fired CFB type oil field steam injection boiler, the highest pressure of the boiler can reach subcritical pressure, the boiler comprises a steel frame, and a boiler barrel, a hearth water cooling wall and a flue are arranged on the steel frame. A superheater, an upper-level economizer, SCR equipment, a lower-level economizer and an air preheater are sequentially arranged on the flue, a softened water pipeline used for conveying oilfield sewage is arranged on the steel frame, the softened water pipeline is sequentially communicated with the lower-level economizer, the upper-level economizer and a bottom coil pipe of a hearth water cooling wall, and the middle and a top coil pipe of the hearth water cooling wall are communicated with a boiler barrel. A separating assembly used for separating saline water and steam is arranged in the boiler barrel, a steam pipeline is communicated between the top of the boiler barrel and the superheater, the bottom of the boiler barrel is communicated with a salt discharging pipe, and a pressure measuring piece used for monitoring pressure changes in a coil pipe is arranged on the coil pipe of the hearth water cooling wall. The method has the effect of reducing the equipment investment cost.

A biomass steam boiler comprises a combustion chamber and a cylindrical body arranged above the combustion chamber, an upper cavity and a lower cavity are communicated through a plurality of heat exchange pipes, a water pressing strip with the width smaller than the inner diameter of each heat exchange pipe is fixed to the top in each heat exchange pipe, and semicircular water pressing pieces arranged up and down are arranged on the sides of the water pressing strips respectively. The semicircular water pressing piece is formed by stamping, cutting and bending a water pressing strip body, a notch structure corresponding to the water pressing piece in shape is formed in the cutting portion of the water pressing strip, a smoke exhaust pipe is arranged on one side of the top of the outer portion of the body, a steam outlet is formed in the top of the upper cavity, and a water adding opening is formed in one side of the lower cavity. The water pressing strip and the water pressing piece form a good water blocking structure, water in the heat exchange pipe, particularly heated boiling water, can be greatly reduced, water resources can be effectively utilized, heat discharged along with the water is reduced, and liquid water can be effectively prevented from entering external equipment to corrode the external equipment for a long time.

The disclosure discloses a device and method for producing high-pressure or super high-pressure steam as a byproduct from a maleic anhydride producing device, includes a super high-pressure steam drum, a molten salt pump, an oxidation reactor, a regulating valve, molten salt coolers, a switching cooler and a gas cooler, wherein the molten salt pump, the oxidation reactor, the regulating valve and the molten salt coolers are connected; and a boiler water buffer device and a boiler water booster pump are arranged between the switching cooler and the gas cooler. The unique design of the boiler water intermediate pressure boosting and the gas cooler in the disclosure makes the gas cooler and the switching cooler very easy to manufacture. Heat can be effectively recovered from process gas to produce high-pressure or super high-pressure steam while accumulation of dust in the process gas is avoided and tar adhesion is easy to clean.

The invention relates to the technical field of gas-fired boiler steam drums, and discloses a gas-fired boiler low-pressure steam drum deaerator emptying control device which comprises two oxygen content monitoring devices, namely a first oxygen content monitoring device and a second oxygen content monitoring device, the first oxygen content monitoring device is installed at an outlet of a deaerator emptying pipeline, and the second oxygen content monitoring device is installed at an outlet of a deaerator emptying pipeline. The second oxygen content monitoring device is mounted at an inlet of an emptying pipeline of the deaerator; the control device further comprises a flow monitoring device installed in the emptying pipeline of the deaerator, an emptying door opening adjusting device installed on the emptying door and a controller. The controller receives numerical values measured by the first oxygen content monitoring device, the second oxygen content monitoring device and the flow monitoring device, calculates the numerical values and then controls the emptying door opening degree adjusting device to adjust the opening degree of the emptying door in real time; according to the method, the opening degree of the emptying door is adjusted in real time by combining actual parameter conditions in the emptying pipeline, and the method has the advantages that the emptying amount is set more accurately and reasonably, unnecessary emission is reduced, and resources are saved.

The invention belongs to the technical field of nuclear power station water chemical working conditions, and relates to an anti-corrosion system and method for a nuclear power station secondary circuit MSR drainage system. A heat exchange pipe is arranged on a steam-water separation reheater, an inlet of the heat exchange pipe is connected with a high-pressure cylinder steam extraction pipeline, an outlet of the heat exchange pipe is connected with an MSR reheater drain tank, and the shell side of the steam-water separation reheater is connected with a high-pressure cylinder steam exhaust pipeline and an MSR separator drain tank. The hydrogen peroxide solution tank is connected with the high-pressure cylinder steam extraction pipeline through a first dosing pump, a second hydrogen peroxide meter and a first iron meter are arranged at an outlet of the MSR reheater drain tank, and the hydrogen peroxide solution tank is connected with the high-pressure cylinder steam exhaust pipeline through a second dosing pump; the 3-methoxypropylamine solution tank is connected with the high-pressure cylinder steam exhaust pipeline through a third dosing pump, and a third hydrogen peroxide meter, a conductivity meter and a second iron meter are arranged at an outlet of the MSR separator drain tank.

The application discloses a high-voltage heating single molten salt tank steam outlet device, a molten salt pump is arranged outside the molten salt tank, the molten salt pump is connected with a high-temperature molten salt distributor, a steam drum is provided with a steam drum high-temperature molten salt inlet, a low-temperature molten salt outlet, an oxygenated water inlet and a steam outlet, the steam drum high-temperature molten salt inlet and the low-temperature molten salt outlet are communicated through a heat exchange molten salt pipe, the steam drum high-temperature molten salt inlet is communicated with a mixed liquid outlet through a pipeline one, the low-temperature molten salt outlet is communicated with a low-temperature molten salt distributor through a pipeline three, the pipeline three is provided with a proportional valve, the proportional valve is communicated with the low-temperature molten salt inlet through a pipeline four, and the molten salt pump is communicated with the mixed device high-temperature molten salt inlet through a pipeline two.The application has the following characteristics: a single tank design is adopted, a hot tank and a cold tank are not needed, an external circulation structure is reduced, and thus the investment of a molten salt heating furnace is reduced, cost is saved, molten salt in a gravity recovery pipeline can be recovered, a high-pressure sleeve type electric heater is adopted to reduce the investment of a transformer and a secondary cable, and molten salt does not need to be discharged when the heater is replaced.

An air inlet device and an exhaust mechanism are connected to the two sides of the recuperative boiler body respectively, and the recuperative boiler body comprises a water inlet bin, a combustion layer and a steam storage bin which are sequentially arranged from bottom to top. The combustion layer comprises a combustion bin communicated with the air inlet device and the exhaust mechanism, and an isolation bin for isolating the combustion bin from the outer wall; a plurality of steam guide pipes which vertically communicate with the water inlet bin and the steam storage bin and are arranged at intervals are arranged in the combustion bin; two membrane walls for separating the isolation bin from the combustion bin are arranged in the combustion layer; the membrane wall guides high-temperature airflow to flow to the exhaust mechanism; and the combustion bin is provided with a convex inner cavity which is gradually expanded close to the exhaust mechanism. According to the utility model, the structural design is reasonable, the convex space is arranged in the combustion bin, the narrower air duct is arranged at the ignition port to guide high-temperature air flow to quickly pass through, and the larger space is arranged at the position far away from the ignition port, so that the retention time of the high-temperature air flow is prolonged, and the balance of the heating efficiency of the front space and the rear space in the combustion bin is realized; and equipment loss caused by local high temperature is reduced.

Even if water accumulates in the guide discharge section that sends the steam generated in the steam generating container to the destination, the steam will not be sent to the destination if condensation occurs inside the section. [Solution] The steam generator 30 comprises a steam generating container 31 having a nozzle 31a for ejecting steam generated from water stored inside, a heating means 36 for heating the water inside the steam generating container 31, and a guided discharge unit 40 for guiding the steam generated inside the steam generating container 31 from the nozzle 31a to an adjacent discharge destination in the horizontal direction. The steam discharge port 44a for discharging the steam guided by the guided discharge unit 40 to the discharge destination 20 is provided with a shielding unit 46b that covers at least the lower part in a manner that allows steam to pass through, preventing water inside the guided discharge unit 40 from flowing out of the discharge port 44a.

The present application relates to heat exchange system technical field, provide a kind of heat exchange system of reducing structural vibration noise, including heat exchange component and communication pipeline, heat exchange component includes heat exchange body and heating element, heat exchange body has heating cavity, and heat exchange body is equipped with water inlet and steam outlet with heating cavity communication;Heating element is located in heating cavity;Heating element includes telescopic part, telescopic part can move back and forth along the extension direction of itself, to remove the bubble on the surface of telescopic part;Communication pipeline includes steam pipeline and water inlet pipeline, steam pipeline is communicated with steam outlet, and water inlet pipeline is communicated with water inlet.The present application is by being provided on heating element telescopic part, bubble on the surface of telescopic part can be removed in the process of moving back and forth along the extension direction of itself, prevent bubble from growing, reduce the number of large bubble in heating cavity, to reduce the vibration noise of heat exchange system.

The utility model provides a system configuration for a coal power unit to adapt to deep peak regulation flexible operation, which is characterized in that a newly-added external steam cooler is arranged at an existing final-stage high-pressure water supply outlet of a water supply pipeline, and a steam side inlet of the newly-added external steam cooler is connected with a pressurization module; steam lower than the target steam extraction pressure grade is introduced into an inlet of the pressurization module, and a steam side outlet of the newly-added external steam cooler communicates with a steam inlet of an existing final-stage high-pressure heater; the steam lower than the target steam extraction pressure grade is pressurized by the pressurization module, firstly enters the newly-added external steam cooler to heat the feed water, and then enters the existing final-stage high-pressure heater to heat the feed water, so that the temperature of the feed water entering the furnace of the unit is increased; and meanwhile, a certain feed water pressure is maintained, so that feed water at an outlet of the economizer is kept at a certain supercooling degree, dry-state operation of the boiler is maintained under the deep peak regulation working condition, the hydrodynamic stability is maintained, and the denitration system is continuously and stably put into operation.

The invention relates to the technical field of boilers, and provides a steam optimization production method and equipment for a steam injection boiler of a thickened oil recovery coal-fired fluidized bed, and the production method comprises the steps: 1, constructing a coupling model of a water supply quantity feedback controller and a steam dryness feedforward predictor, 2, training and optimizing the coupling model in a data driving mode, wherein the coupling model is used for predicting the dryness of steam produced under the data conditions of specific water supply quantity, fuel characteristics and fluidization air quantity; 3, inputting current water supply quantity, fuel characteristics and fluidization air quantity data, and predicting the dryness of steam produced under the current production condition by utilizing the trained model; 4, based on the predicted steam dryness, on the basis of steam dryness prediction, under the current water supply condition, on the basis of mean square errors of the predicted steam dryness and rated steam dryness, fuel characteristics and fluidization air volume data are optimized and adjusted, and steam optimized production is achieved; a feedforward predictor is constructed through a time-varying long-short-term memory network, and accurate capture is achieved.

The present invention discloses a supercritical coal-fired boiler startup system and operation method coupled with molten salt heat storage. The present invention connects a molten salt heat exchange system in parallel between the steam-water separator and the low-temperature superheater outlet of the supercritical coal-fired boiler, thereby establishing a supercritical coal-fired boiler rapid startup system. The system comprises a low-temperature molten salt storage tank, a high-temperature molten salt storage tank, a molten salt pump, a molten salt-steam-water heat exchanger, a molten salt-flue gas heat exchanger, and the like. During the startup process of the unit, the working fluid in the startup steam-water separator is heated by high-temperature molten salt through the molten salt-steam-water heat exchanger, thereby reducing the boiler recirculating water flow rate during the startup process and improving the startup speed. During the load reduction process, the flue gas in the flue gas at the rear of the boiler heats the molten salt through the flue gas-molten salt heat exchanger to store thermal energy. The present invention greatly improves the startup rate of the coal-fired unit, reduces the additional energy consumption during the startup process through the molten salt heat storage device, and realizes the flexible and efficient coordinated improvement of the coal-fired power generation unit.

The utility model relates to the technical field of steam generators, and discloses a novel high-quality pure steam generator which comprises a pure steam generator body, the pure steam generator body is provided with a purified water input end and a steam output end, purified water enters the pure steam generator body through the purified water input end, and the steam output end is communicated with the pure steam generator body. Steam generated by the pure steam generator body is discharged through the steam output end, the steam generated by the pure steam generator body can enter a buffer tank through a first steam outlet and a connecting pipe through the arranged buffer tank, and the steam is guided to rotate at a high speed along the tank wall of the buffer tank through a cyclone liquid removing device in the buffer tank; liquid drops in the pure steam fall to the bottom along the inner wall of the buffer tank under the action of centrifugal force and gravity, so that the purpose of separation is achieved, moisture in the pure steam is further removed, the proportion of dry steam in the steam is increased, and the problem that the processing capacity of the dryness of the pure steam is insufficient in the prior art is solved.

This invention provides a waste heat utilization device and process for the production of long-chain nylon resin. The waste heat utilization device includes a polymerization reactor, an evaporator, a steam manifold, and a hot water circulation system. The hot water circulation system includes a hot water storage tank and a hot water circulation pump. The polymerization reactor is connected to the inlet of the hot water storage tank via an exhaust pipe to the hot water storage tank and to the inlet of the evaporator via an exhaust pipe to the evaporator. The outlet of the evaporator is connected to the steam manifold via an inlet pipe. The steam manifold is connected to the steam user end via a steam pipeline to the steam network. The outlet of the hot water storage tank is connected to the hot water user end via the hot water circulation pump and a hot water pipeline. This invention uses the steam discharged during the polymerization process as a heat medium to heat deionized water to obtain saturated steam and hot water, which are then supplied to the factory's steam and hot water users. This fully utilizes the waste heat from the polymerization process, reduces the factory's steam consumption, and lowers production energy consumption.

The application provides a heat exchange device with vibration noise suppression function, which comprises a heat exchange body, a heating cavity in the heat exchange body, a water inlet and a steam outlet on the heat exchange body and in communication with the heating cavity, a heating element in the heating cavity, and a flow dividing element in the heating cavity, wherein the flow dividing element comprises a plurality of water injection holes, each of which is in communication with the water inlet and is used for injecting water to remove steam bubbles on the surface of the heating element. The heat exchange device with vibration noise suppression function aims to solve the problem of large operation noise of the heat exchange device in the prior art.