46results about "Water circulation promotion" patented technology

The invention discloses a steam compressor system and a control method. The system comprises a steam compressor, a controller, a heat exchange device, and a steam inlet pressure detection device, a steam exhaust pressure detection device and a steam flow detection device which are respectively connected with the controller, the heat exchange device internally comprises a gas phase area and a liquid phase area, and the gas phase area is communicated with a steam inlet of the steam compressor through a steam inlet pipeline; the steam inlet pressure detection device is arranged on the steam inlet pipeline; a heat exchange coil and a heating device are arranged in the liquid phase area; an inlet of the heat exchange coil is communicated with a steam outlet of the steam compressor through a steam exhaust pipeline; the steam exhaust pressure detection device and the steam flow detection device are arranged on the steam exhaust pipeline; an outlet of the heat exchange coil extends to the outside of the heat exchange device; and the controller is respectively connected with the steam compressor and the heating device. According to the steam compressor system provided by the embodiment of the invention, the steam heat can be recycled, so that the energy consumption of the steam compressor test is reduced, and the test cost is reduced.

The invention discloses a steam compression system and a control method thereof. The steam compression system comprises a flash tank, at least one stage of steam compressor and a first water circulation pipe. The flash tank is used for enabling the steam generation water heated to the specified flash temperature to be subjected to flash evaporation under the negative pressure condition in the tank to become low-pressure steam; the steam compressor is used for compressing the low-pressure steam into superheated steam of which the saturation pressure is target condensing pressure; and the first water circulating pipe is used for guiding water of a target water source to motors of the steam compressors at all levels and exchanging heat with heat dissipation mechanisms of all the motors, and the water subjected to heat exchange returns to the target water source. Compared with the prior art, heat at the motor is recycled through water circulation, so that the enthalpy value of water for steam generation is increased, energy consumption needed by steam generation is reduced, and the comprehensive energy efficiency of the system is improved.

The utility model relates to a steam boiler for a heating system, which belongs to the technical field of steam boilers and comprises a steam boiler body, a wall is arranged on the outer side of the steam boiler body, the steam boiler body is fixedly mounted on the inner wall of the wall, a square clamping groove is formed in the top end of the inner wall of the steam boiler body, and a sealing groove is formed in the clamping groove. The steam boiler has the advantages that waste steam can be prevented from leaking out of a gap between the cover plate and the steam boiler body through matched use of the sealing block and the sealing groove, the sealing performance of the steam boiler body can be improved, the second abutting plate and the first abutting plate can be pushed to slide out through the elastic force of the spring, and the sealing effect is improved. And the first abutting plate and the second abutting plate are made of acrylate rubber materials and have good heat resistance, sealing performance and corrosion resistance, and the sealing performance between the steam boiler body and the cover plate is further improved.

The present application relates to a method for reducing the start-up time of a water-cooled wall standby furnace, which uses equipment including a gasifier water-cooled wall, a steam drum and a water-cooled wall circulating water pump. The present application makes full use of the heat of the continuous blowdown of the operating series steam drum, and realizes the maintenance of the standby series water-cooled wall temperature, and the system is simple and the control is convenient; compared with the prior art, the present application can reduce the start-up time of the standby furnace, reduce the impact of the gasifier trip on the device operation load, and reduce the economic loss caused by shutdown. According to the water baking time of 8 hours, the present application can reduce the economic loss of 8 hours caused by unplanned shutdown, and according to the gasification scale of 100,000 standard cubic meters / hour of effective gas production, the economic loss can be reduced by nearly 500,000 yuan.

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 utility model relates to the technical field of high-temperature steam cyclic utilization, in particular to a high-temperature steam cyclic utilization device which comprises a steam generating box, a steam leading-out component, a filtering component, a first circulating pipe and a high-temperature steam fumigation box, the steam leading-out component comprises a steam leading-out pipe, a steam heating pipe is arranged on the outer side of the steam leading-out pipe, and a second circulating pipe is arranged on the outer side of the steam heating pipe. A first fan is installed at the lower end of the steam eduction pipe, a heat exchange ring is arranged on the outer side of the steam eduction pipe, a second circulation pipe is arranged at the upper end of the steam heating pipe, a second fan is installed at one end of the second circulation pipe, and a steam uniform distribution net is arranged on the lower side of the steam heating pipe. The outer side of the steam leading-out pipe is heated through internal circulating steam of the steam heating pipe, the stability of the steam temperature in the steam leading-out pipe is improved, loss of steam heat in the steam leading-out pipe is reduced, and the use effect of the steam is facilitated.

The utility model relates to the technical field of constant pressure, in particular to a constant-pressure circulating device for a gas-fired boiler, which comprises a water storage tank and a water inlet pipe. A water inlet pipe is arranged at the top end of the water storage tank, two ends of the water pump are fixedly connected with the water inlet pipe, and a water outlet pipe is arranged on the outer wall of the lower end of the water storage tank; the water storage tank is fixedly connected with the constant-pressure tank through a connecting pipe, containing grooves are formed in the two sides of the constant-pressure tank, and the glass sheets are fixed to the inner walls of the containing grooves in a sealed mode; by improving the constant-pressure circulating device for the gas-fired boiler, the constant-pressure circulating device for the gas-fired boiler has the advantages of being reasonable in structural design and capable of stabilizing instantaneous water pressure and flexibly adjusting water flow, and therefore the problems and defects in the prior art and equipment are effectively solved.

The present application relates to a kind of heat pump steam system control method and device, controller.The heat pump steam system control method described in the present application includes the following steps: obtaining steam demand quantity increases adjustment instruction;Determine whether heat pump steam system is in flash mode or hot water mode;If it is flash mode, steam outlet is opened, hot water outlet is closed, electric heating element is closed, the output power of heat pump system is increased, the frequency of pressurizing pump is increased, the opening of water supply valve is increased, and the opening of steam outlet valve is increased;If the current steam production does not meet the set steam demand, and meet the first preset condition, then control system enters hot water mode, steam outlet is closed, hot water outlet is opened, and electric heating element is started.The heat pump steam system control method described in the present application has the advantages of high efficiency in steam generation and low energy consumption of the system.

The application provides a boiler intermediate mixing header system and a boiler water circulation system, wherein the boiler intermediate mixing header system comprises a header structure, the header structure comprises an inlet box section and an outlet box section in communication with the inlet box section, a first channel is arranged in the inlet box section, a second channel is arranged in the outlet box section, and the cross-sectional area of the first channel is smaller than that of the second channel in the direction perpendicular to the extension direction of the first channel to the second channel; a plurality of inlet portions are arranged on the header structure at intervals and in communication with the inlet box section; and a plurality of outlet portions are arranged on the header structure at intervals and in communication with the outlet box section. Therefore, the technical scheme of the application effectively solves the problem of large outlet steam-water temperature deviation of the boiler spiral pipe ring in the related art, and further causes the uniformity of the steam-water temperature entering the vertical pipe ring water wall to be poor.

A pump uses the steam hammer effect to pump water from a reservoir into a control volume. Steam is injected into a water conduit extending between a liquid water reservoir and the control volume forms a liquid steam interface. Steam within the conduit condenses on the interface creating a region of partial vacuum. Water accelerates into the region of partial vacuum and is vented into the control volume, flow being controlled by a valve.

The utility model provides a liquid-gas separation circulating system, and relates to the field of energy-saving devices. The problem that an existing steam system cannot recycle used steam is solved. The liquid-gas separation circulating system comprises a steam generator, a sterilization tank and a cooling device; wherein a steam outlet of the steam generator is communicated with a steam inlet of the sterilization tank through a first pipeline and a first electromagnetic valve, and a liquid inlet of the steam generator is communicated with an overflow port of the cooling device through a second pipeline and a second electromagnetic valve; and a steam outlet of the sterilization tank is communicated with a steam inlet of the cooling device through a third pipeline and a third electromagnetic valve. According to the scheme, steam is recycled, pollution is reduced, and the utilization rate of resources is increased.

The invention is applicable to the technical field of nuclear power stations, and provides a drainage control method and device, terminal equipment and a storage medium, and the method comprises the following steps: starting a target water pump after loop circulation of a secondary loop system is established; the opening degree of the water outlet valve of the target water pump is adjusted according to the water temperature change condition of the secondary loop system, water of loop circulation of the secondary loop system can be controlled to be drained in advance under the condition that the cooling rate is not affected after loop circulation of the secondary loop system is established, the drainage rate can be adjusted according to the cooling efficiency, and the cooling efficiency of the secondary loop system is improved. Water is drained in advance under the condition that water circulation cooling of the secondary circuit system is guaranteed, so that water of the secondary circuit system can be emptied more quickly, the time required by water drainage of the secondary circuit system of an overhaul unit can be greatly shortened, the influence of water drainage of the secondary circuit system on an overhaul path is reduced, and the overhaul efficiency is improved.

This invention discloses a photovoltaic and fuel-based drying steam generation system, relating to the field of drying equipment. The system includes a photovoltaic water heater, an insulated water tank, a steam generator, and a heat exchanger. The outlet of the photovoltaic water heater is connected to the inlet of the insulated water tank via a first pipe. The outlet of the insulated water tank is connected to the inlet of the steam generator via a second pipe. The steam inlet of the steam generator is connected to the heat exchanger via a third pipe. The drain outlet of the heat exchanger is connected to the inlet of the insulated water tank via a fourth pipe. The photovoltaic water heater converts solar energy into heat energy to heat water. The heated water is stored in the insulated water tank and supplied to the steam generator. The steam generator heats the water to its boiling point to generate steam. The steam heats air through the heat exchanger, and the hot air is delivered to the drying equipment to dry agricultural products. Because the hot water is directly heated, steam is generated quickly, reducing energy consumption and lowering costs.

The present invention relates to a steam generating system for a solar thermal power station and an operating method thereof. The steam generating system provides water as a working medium through a water supply unit. The steam generating system includes a preheater, a venturi nozzle, an evaporator, a steam drum and a starting unit. The present invention utilizes the kinetic energy of the feed water and combines the principle of the venturi nozzle. On the one hand, the accelerated mixing function of the venturi nozzle is used to promote the circulation of the steam-water medium between the evaporator and the steam drum. It is a structure between natural circulation and forced circulation. On the other hand, when the feed water temperature is lower than the freezing point of the molten salt, the feed water can also be mixed with the steam and water in the steam drum downcomer through the venturi nozzle, and finally the feed water temperature entering the evaporator is increased. The present invention saves the investment in the forced circulation pump, improves the reliability of the system operation, and saves factory electricity.

The invention relates to a method (200) of controlling a steam generation system (10) which includes one or more liquid reservoirs (12), a steam generator (14) and a steam output (28). During a present steam cycle, an injection time in which a steam generator (14) injects steam is determined. The injection time is multiplied by a predetermined steam flow rate of the steam generator (14). Based on the predetermined steam flow rate and on the injection time, a quantity of liquid remaining in the liquid reservoirs (12) is determined. Based on the predetermined steam flow rate and on the quantity of liquid remaining in the liquid reservoirs (12), a remaining time is determined.

The application relates to a heat pump steam system control method and device, and a controller. The heat pump steam system control method comprises the following steps: obtaining a steam quality increasing adjustment instruction; judging whether the heat pump steam system is in a flash mode or a hot water mode; if the heat pump steam system is in the flash mode, opening a steam outlet, closing a hot water outlet, and closing an electric heating element to increase the output power of the heat pump system; if the current steam quality does not meet a set steam quality and a first preset condition is met, the system is controlled to enter the hot water mode, the steam outlet is closed, the hot water outlet is opened, and the electric heating element is started. The heat pump steam system control method has the advantages of high efficiency in generating required steam and low energy consumption of the system.

To provide a steam generator which can prevent a temperature of a heat transfer surface of an evaporator from increasing excessively during start of circulation of a liquid material.SOLUTION: A steam generator includes: a gas-liquid separator 10 having a first storage part 11a forming a space for storing a liquid material La, a liquid material supply part 12 configured to supply the liquid material La to the first storage part 11a, and a gas discharge part 13 serving as a discharge path of a gas in the first storage part 11a; an evaporator 20 having a second storage part 21a forming a space for storing the liquid material La, and heating means 23 configured to heat the liquid material La in the second storage part 21a; a lower pipe 30 serving as a passage that allows a lower part of the first storage part 11a and a lower part of the second storage part 21a to communicate with each other; an upper pipe 40 serving as a passage which allows an upper part of the second storage part 21a and an upper part of the first storage part 11a to communicate with each other; and a noncondensable gas supply part 50 which supplies a noncondensable gas Gb to the second storage part 21a or the lower pipe 30.SELECTED DRAWING: Figure 2

Disclosed are a device and a method for producing high-pressure or super high-pressure steam as a byproduct from a maleic anhydride producing device. The 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. The molten salt pump, the oxidation reactor, the regulating valve and the molten salt coolers are connected. 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 provides a steam, heat and power cogeneration system under a deep peak regulation working condition and an operation method. The system comprises a coal-fired unit, a first transformer, a second transformer, an electric boiler, an electric superheater and a desalting water tank. The first transformer is connected with the electric boiler; the second transformer is connected with the electric superheater; an inlet of the electric boiler is connected with an outlet of the demineralized water tank through a water supply pipeline, an outlet of the electric boiler is connected with an inlet of the electric superheater through a first hot water pipeline, and an outlet of the electric superheater is communicated with a steam supply main pipe of the coal-fired unit through a steam supply pipeline. When the coal-fired unit operates at low load, steam generated by the electric superheater in the steam supply pipeline and steam in the steam supply mother pipe are supplied to industrial steam users together. According to the system, the peak regulation depth of the coal power unit is further improved, the new energy consumption capability is improved, and the overall income of a coal power enterprise is improved; the system has good adaptability, high return on investment and operation reliability, and lays a solid foundation for large-scale popularization and application of the system.

The utility model belongs to the technical field of boiler energy conservation, and discloses a boiler circulating water system which comprises a boiler water pump, a circulating water system and a sealing water system, the sealing water system comprises a sealing water tank, and the sealing water tank is connected with a first sealing water pipeline; the sealing water cooler is communicated with the sealing water tank through a first sealing water pipeline, and the sealing water cooler is communicated with the mechanical sealing structure of the boiler water pump through the first sealing water pipeline; the flow adjusting assembly is arranged on the first sealing water pipeline; the second sealing water pipeline is used for conveying boiler water, and the second sealing water pipeline is communicated with the sealing water cooler; according to the scheme, through the first sealing water pipeline, high-pressure boiler water conveyed by the second sealing water pipeline is used as mechanical seal sealing water, and it is ensured that even if the pump does not operate, the sealing water can still keep flowing. The boiler circulating pump solves the problem that sealing water of a boiler circulating pump in the prior art does not flow.

The invention discloses a thermoelectric unit boiler surface pollution discharge waste heat recovery method and device. Steam discharged by a boiler drum is heated by a superheater and then sequentially enters a high-pressure air cylinder, a medium-pressure air cylinder and a low-pressure air cylinder to push a steam turbine to generate electricity, and superheated steam obtained after step-by-step cooling and pressure reduction serves as heat supply steam to be output; boiler water obtained after regular surface pollution discharge or continuous surface pollution discharge of a boiler drum is fed into a vaporizer and sprayed downwards, meanwhile, part of superheated steam discharged by a low-pressure air cylinder is introduced into the vaporizer and flows upwards, the boiler water makes reverse contact with the superheated steam in the vaporizer, and the boiler water is vaporized to generate continuously-discharged steam; continuously-discharged steam is collected into heat supply steam after being filtered, and concentrated water collected at the bottom of the vaporizer is returned through a reflux pump to be circularly evaporated and vaporized. The superheated steam is introduced to vaporize the high-temperature and high-pressure wastewater discharged from the surface of the boiler, so that 100% utilization of waste heat discharged from the surface of the boiler and zero discharge of the wastewater can be realized.

The utility model discloses a vertical energy-saving environment-friendly gas steam generator, which relates to the field of gas steam generators and comprises a box body and a combustion chamber arranged at the lower end of the box body, a water storage barrel is arranged in the box body, and a water inlet pipe and an exhaust pipe are respectively arranged at the top of the box body. The water inlet pipe and the exhaust pipe are both connected with a water storage barrel in the box body in a penetrating mode, and a stirring assembly is arranged in the box body. By arranging the stirring assembly, a water source can be uniformly heated during heating, a motor is started to drive a stirring frame and a driving shaft to rotate, the water source in a water storage barrel is driven to be preliminarily mixed, the driving shaft drives a connecting plate to rotate, and two groups of stirring shafts are driven to rotate under the cooperation of an inner gear and a straight gear; the water source can be fully mixed when being heated, so that the water source is uniformly heated, through mutual cooperation among the combustion chamber, the air inlet hole and the cavity, the heat source can heat the side face of the water storage barrel while heating the bottom of the water storage barrel, and the heat energy utilization rate is increased.

The utility model discloses a cooling water circulation system for a biomass steam boiler, which belongs to the technical field of cooling water circulation, and comprises a support table, the left side of the top of the support table is fixedly connected with a steam boiler body, and the inner wall of the steam boiler body is fixedly connected with a circulation mechanism. A pre-cooling mechanism is fixedly connected to the rear side of the top of the supporting table, a circulating mechanism can effectively absorb heat in the boiler, cooling of key parts of the boiler is guaranteed, cooling pipes are arranged on the inner wall of the boiler and can make contact with the area needing to be cooled in a large area, heat is transferred to water in the pipes, local overheating of the boiler is prevented, and the service life of the boiler is prolonged. Normal operation and safety of the boiler are guaranteed, the pre-cooling mechanism receives hot water discharged from the steam boiler, and the hot water is prevented from directly entering the cooling tower, so that the load of the cooling tower is reduced, the hot water is changed into small liquid drops, the contact area of the hot water and a cooling medium is increased, heat dissipation is accelerated, and the pre-cooling efficiency is improved.

The invention discloses a double-water-inlet double-cavity independent temperature control type steam boiler which comprises a main body, an upper vaporizing cavity and a lower vaporizing cavity which are arranged up and down and isolated from each other are formed in the main body, and a first heating body used for controlling the vaporizing temperature in the upper vaporizing cavity and a second heating body used for controlling the vaporizing temperature in the lower vaporizing cavity are arranged in the main body; moreover, a first liquid inlet communicated with the upper vaporizing cavity and a second liquid inlet communicated with the lower vaporizing cavity are further formed in the main body and are used for injecting liquid flow into the upper vaporizing cavity and the lower vaporizing cavity respectively; at least one first steam outlet communicated with the upper vaporizing cavity and at least one second steam outlet communicated with the lower vaporizing cavity are further formed in the outer wall of the main body and used for allowing steam in the upper vaporizing cavity and the lower vaporizing cavity to flow out respectively. According to the technical scheme, the purposes of double-water-inlet double-cavity and independent temperature control can be achieved, and the vaporization degree in the vaporization cavity is effectively improved.

The invention discloses a boiler water system, superheater and reheater collaborative chemical cleaning system and cleaning method.The boiler water system, superheater and reheater collaborative chemical cleaning system comprises a boiler water system, a superheater system, a reheater system, a cleaning assembly, a flushing assembly, a control pipeline assembly and a discharge pipeline assembly; the cleaning assembly comprises a cleaning box, a cleaning pump and a cleaning pipeline, the flushing assembly comprises a large flushing tank, a flushing pump and a flushing pipeline, the cleaning pipeline is used for cleaning the boiler water system, the superheater system and the reheater system, and the flushing pipeline is used for flushing the boiler water system, the superheater system and the reheater system. The discharging pipeline assembly is used for discharging waste liquid generated by cleaning or flushing. According to the collaborative chemical cleaning system for the boiler water system, the superheater system and the reheater, the overall cleaning time of the boiler water system, the superheater system and the reheater system can be effectively shortened, and the overall cleaning efficiency of the boiler water system, the superheater system and the reheater system is improved.

The invention discloses a waste heat boiler header convenient to assemble, and relates to the field of boilers, the waste heat boiler header convenient to assemble comprises a box body and a plurality of inlet and outlet pipes arranged on the box body, a communicating opening is formed in the inner side face of the box body, a butt joint groove communicated with the communicating opening is formed in the side face of the box body, and a connecting plate is embedded in the inner wall of the butt joint groove; the inlet and outlet pipes are installed on the connecting plate at equal intervals in the length direction of the connecting plate. And locking mechanisms located on the two sides of the butt joint groove are arranged on the surface of the box body and comprise cover plates installed at the two ends of the butt joint groove, and sliding grooves are formed in the cover plates. According to the waste heat boiler header convenient to assemble, the inlet and outlet pipe and the connecting plate are integrally arranged, so that under the cooperation effect of the locking mechanism, the waste heat boiler header can be conveniently and rapidly assembled, meanwhile, when the inlet and outlet pipe is damaged subsequently, the inlet and outlet pipe can be conveniently disassembled for maintenance, and the waste heat boiler header is more convenient to use.

The boiler drain and sootblower drain recycling system and recycling method of the present invention belong to the field of power plant thermal system technology optimization. The system includes an atmospheric expansion tank, a steam-water separator, and a steam mixer. The present invention respectively leads the sootblower drain and the boiler heating surface drain to the steam-water separator and the atmospheric expansion tank. The drain generated by the steam-water separator is connected to the atmospheric expansion tank, and the flash steam generated by the steam-water separator is connected to the steam mixer. The steam mixer mixes the flash steam generated by the steam-water separator with the plant steam, and finally merges them into the heating main pipe for heating. The present invention can achieve effective utilization of the sootblower drain and the boiler heating surface drain. In addition, the unit that generates steam using the sootblower drain and the unit that generates steam using the boiler heating surface drain operate in parallel and can be switched at any time, thereby ensuring the reliable and stable operation of the boiler side drain to the greatest extent.

The utility model relates to the technical field of boilers, in particular to a boiler tube panel and condensed water heat energy recycling device which comprises a water storage disc, a tube panel is arranged at the top of the water storage disc, a collecting structure is arranged at the top of the water storage disc, and the collecting structure comprises a fixed sleeve, a hinge and a movable sleeve. A fixed sleeve is fixedly connected to the top of the water storage disc, a hinge is fixedly connected to one side of the top of the fixed sleeve, a movable sleeve is rotationally connected to the top end of the hinge, conduction structures are arranged on the two sides of the tube panel, each conduction structure comprises a conduction ring and a conduction frame, and multiple groups of conduction rings are fixedly connected to the inner walls of the fixed sleeve and the movable sleeve; the bottom of the conduction ring is fixedly connected with a conduction frame, the conduction frame is arranged at the bottom of the water storage disc, and the boiler tube panel and condensed water heat energy recycling device has the advantage that residual heat generated by the tube panel can be conducted to the outer side through the arranged conduction structure.

Central circulation tube climbing film type ultra-clean pure steam generator, comprising a sampling condenser, a heater, a non-condensable gas separator, an evaporator and a superheater; the outlet end of the sampling condenser is connected to the working steam condensate heat recovery device through a second pipeline, the working steam condensate heat recovery device is communicated with the heater, the heater is connected to the non-condensable gas separator through a water delivery pipeline, and a breather is arranged at the upper end of the non-condensable gas separator; the lower end of the non-condensable gas separator is connected to a preheater through a fourth pipeline, and the upper end of the preheater is communicated with the inner cavity of the non-condensable gas separator through a gas pipeline; the preheater is communicated with the evaporator through a fifth pipeline, a steam-water separator is installed in the inner cavity of the evaporator, the evaporator is communicated with the superheater through a sixth pipeline, and a pure steam outlet pipeline is arranged at the upper end of the superheater. The present invention overcomes the deficiencies of the prior art, and the pure steam produced by it also has an extremely low non-condensable gas content, an extremely high dryness, and can perform pasteurization on its own feed water pipeline.

The invention discloses a device for improving by-product low-pressure steam optimization of a natural gas-to-ethylene glycol rectification device, which comprises a dealcoholization tower A / B, a dealcoholization tower waste heat boiler A / B, a methanol recovery tower, a waste heat reboiler A / B, a side condenser, a steam compressor and a gas-liquid separation tank, and the tower top process material of the dealcoholization tower A / B is connected with the tube pass of the dealcoholization tower waste heat boiler A / B through a pipeline; shell side by-product low-pressure steam of a waste heat boiler A / B of the dealcoholization tower is gathered and then divided into three paths to be respectively connected with a shell side of a waste heat reboiler A / B, a shell side of a bypass condenser and a gas-liquid separation tank at an inlet of a steam compressor, and the top of the gas-liquid separation tank at the inlet is further connected with the steam compressor through a pipeline. And by-product steam is pressurized by a steam compressor and merged into a steam pipe network for recycling. According to the invention, the originally wasted byproduct steam of the waste boiler at the top of the dealcoholization tower can be recovered, the quality of the steam is improved by using the compressor, and the efficient reutilization of the steam is realized, so that the energy consumption in the ethylene glycol production process is reduced, and the economic benefits and environmental benefits of enterprises are improved.