CN216813788U - Liquid corrosion inhibitor gasification equipment - Google Patents

Abstract

The utility model provides a gasification device for a liquid corrosion inhibitor, which can effectively utilize the effective components of the liquid corrosion inhibitor, improve the anti-corrosion effect, enlarge the anti-corrosion protection range, reduce the cost and have good economy. Comprises a drying filter, a fan, a heater and a gasifier which are connected in sequence; one end of the gasifier is provided with an air inlet, the air inlet is connected with the outlet of the heater through a pipeline, the other end of the gasifier is provided with an air outlet and is connected to a main pipeline to be protected through a pipeline, a liquid corrosion inhibitor heat transfer pipe is arranged in the gasifier, one side of the gasifier is provided with a liquid corrosion inhibitor filling opening, and the liquid corrosion inhibitor filling opening is communicated with the liquid corrosion inhibitor heat transfer pipe through a pipeline.

Description

A liquid corrosion inhibitor gasification device

technical field

The utility model relates to the technical field of deactivation protection of power plant boiler system pipes, in particular to a liquid corrosion inhibitor gasification device.

Background technique

In recent years, with the continuous operation of new energy sources such as nuclear power, thermal power units are required to strictly control the commissioning time and face longer and longer periods of deactivation. During the shutdown period of thermal equipment of the thermal power unit, if effective protection measures are not taken or improper measures are taken, it will lead to strong corrosion on the metal surface of a large area of the water vapor side, and even lead to the deterioration of metal performance, resulting in major safety issues such as pipe burst during re-operation. ACCIDENT. Therefore, more and more attention is paid to the anti-corrosion protection of thermal power unit boilers when they are out of service, and the requirements are becoming more and more strict to prevent a large amount of corrosion during the deactivation of the boilers, to ensure that the coal-fired boilers of the unit can be started safely and reliably at any time, and to avoid corrosion caused by deactivation. Accidents such as tube burst occurred during the operation of the boiler.

Among the existing boiler deactivation protection technologies, adding corrosion inhibitors for deactivation protection is one of the conventional practices. Corrosion inhibitors are divided into solid and liquid. The liquid corrosion inhibitors currently developed have a good anti-corrosion effect in boiler-related system pipes, while liquid corrosion inhibitors cannot directly enter the thermal equipment system with water vapor in large quantities due to their high cost.

Utility model content

In order to solve the problems existing in the prior art, the utility model provides a liquid corrosion inhibitor gasification device, which can effectively utilize the effective components of the liquid corrosion inhibitor, improve the anti-corrosion effect, increase the scope of anti-corrosion protection, and at the same time reduce the cost, Economical.

The utility model is realized through the following technical solutions:

A liquid corrosion inhibitor vaporization device, comprising a drying filter, a fan, a heater and a vaporizer connected in sequence;

One end of the vaporizer is provided with an air inlet, the air inlet is connected with the outlet of the heater through a pipeline, the other end is provided with an air outlet and is connected to the main pipeline to be protected through a pipeline, and a liquid buffer is arranged in the vaporizer. The corrosion inhibitor heat transfer pipe is provided with a liquid corrosion inhibitor injection port on one side of the vaporizer, and the liquid corrosion inhibitor injection port is communicated with the liquid corrosion inhibitor heat transfer pipe through a pipeline.

Preferably, a liquid level gauge is provided on the vaporizer to indicate the height of the liquid corrosion inhibitor in the liquid corrosion inhibitor heat transfer tube.

Preferably, the drying filter has a built-in desiccant and a filter screen.

Preferably, the pipeline connecting the gas outlet of the gasifier with the main pipeline to be protected is sequentially provided with a gas flow meter and a gas outlet valve of the gasifier.

Preferably, a sampling valve is provided between the gas outlet of the gasifier and the gas flow meter.

Preferably, an air-to-air evacuation valve is provided at the gas outlet of the gasifier.

Preferably, the outlet of the heater is connected to the main pipeline to be protected through a bypass pipeline, and the bypass pipeline is provided with a gasifier bypass door.

Preferably, a drain valve to the ground is arranged between the heater and the bypass door of the gasifier, and a thermometer is arranged at the outlet of the heater.

Preferably, one or more liquid corrosion inhibitor heat transfer tubes are provided, adjacent liquid corrosion inhibitor heat transfer tubes are communicated with each other, and the liquid corrosion inhibitor injection port is connected to one of the liquid corrosion inhibitors through the pipeline. The agent heat transfer pipe is connected.

Preferably, one end of the gas inlet of the gasifier is provided with a hygrometer, and one end of the gas outlet of the gasifier is provided with a pressure gauge.

Compared with other existing technologies, the utility model has the following beneficial technical effects:

A liquid corrosion inhibitor vaporization device provided by the utility model, a drying filter, a fan and a heater are arranged in sequence before the air inlet of the vaporizer, and the liquid corrosion inhibitor can be continuously vaporized by high-temperature dry and clean air. Convert a large amount of the active ingredients in the liquid corrosion inhibitor into gaseous state, and bring the vaporized active ingredients into the pipeline of the thermal equipment system together with the high-temperature air to form anti-corrosion protection on the metal surface and prevent the boiler from being out of use. A large amount of corrosion occurs to ensure that the coal-fired boiler of the unit can be started safely and reliably at any time, and the gasified corrosion inhibitor can be more evenly distributed in the pipeline of the thermal equipment system, which can widely protect the metal surface of the equipment with a large area. The anti-corrosion performance of the liquid corrosion inhibitor can improve the anti-corrosion effect while reducing the input cost of the liquid corrosion inhibitor and improving the economy.

A further improvement of the utility model is that a desiccant and a filter screen can be built in the drying filter to dry the inlet air and remove large particles of impurities.

The further improvement of the utility model is that the liquid level gauge can indicate the height of the liquid corrosion inhibitor in the liquid corrosion inhibitor heat transfer tube.

A further improvement of the utility model lies in that the gasifier bypass door first introduces the hot air from the heater into the system pipeline to be protected for pipe warming, so as to prevent the gaseous corrosion inhibitor from condensing when it is condensed.

Description of drawings

FIG. 1 is a schematic structural diagram of the liquid corrosion inhibitor gasification device of the present invention.

In the picture: 1-filter drier, 2-fan, 3-heater, 4-thermometer, 5-gasifier intake valve, 6-hygrometer, 7-gasifier, 8-liquid corrosion inhibitor heat transfer Pipe, 9- liquid corrosion inhibitor injection port, 10- pressure gauge, 11- emptying valve, 12- liquid level gauge, 13- sampling valve, 14- gas flow meter, 15- vaporizer outlet valve, 16 -Gasifier bypass door, 17-Ground blowdown valve.

Detailed ways

In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. . It is to be understood that the data so used may be interchanged under appropriate circumstances so that the embodiments of the invention described herein can be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having" and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those expressly listed Rather, those steps or units may include other steps or units not expressly listed or inherent to these processes, methods, products or devices.

Below in conjunction with accompanying drawing, the utility model is described in further detail:

As shown in FIG. 1 , a liquid corrosion inhibitor vaporization device provided by the present invention includes a drying filter 1, a fan 2, a heater 3 and a vaporizer 7 connected in sequence;

One end of the gasifier 7 is provided with an air inlet, which is connected with the outlet of the heater 3 through a pipeline, and the other end is provided with an air outlet and is connected to the main pipeline to be protected through a pipeline, and the gasifier 7 is arranged inside There is a liquid corrosion inhibitor heat transfer pipe 8, a liquid corrosion inhibitor injection port 9 is provided on one side of the vaporizer 7, and the liquid corrosion inhibitor injection port 9 is communicated with the liquid corrosion inhibitor heat transfer pipe 8 through a pipeline.

A liquid corrosion inhibitor gasification device provided by the utility model, a drying filter 1, a fan 2 and a heater 3 are arranged in sequence before the air inlet of the gasifier 7, which can continuously use high temperature dry and clean air to inhibit the liquid corrosion. gasification, and the effective components of the gasification are brought into the pipeline of the thermal equipment system together with the high-temperature air, forming anti-corrosion protection on the metal surface, preventing a large amount of corrosion of the boiler during the shutdown period, and ensuring that the coal-fired boiler of the unit can be used at any time. Safe and reliable start-up, the vaporized corrosion inhibitor can be more evenly distributed in the pipeline of the thermal equipment system, effectively utilize the anti-corrosion performance of the liquid corrosion inhibitor, improve the anti-corrosion effect, reduce the input cost of the liquid corrosion inhibitor, improve the economical.

Among them, the drying filter 1 described in the utility model can have a built-in desiccant and a filter screen, which can be used to dry the air at the inlet, remove large particles of impurities, and prevent the moisture in the air from having an anti-corrosion effect on the liquid corrosion inhibitor. Causes a negative impact, while the filter screen filters out the impurities in the air, preventing the blockage of the system pipes during shutdown protection.

Among them, the utility model is provided with a fan 2, and a gas flow meter 14 and a gasifier outlet valve 15 are sequentially provided on the pipeline connecting the gas outlet of the gasifier 7 with the main pipeline to be protected. The fan 2 can suck the air passing through the filter drier 1 into the heater 3 for heating, and then enter the vaporizer 7 to heat along the air duct from the liquid corrosion inhibitor injection port 9 to the liquid corrosion inhibitor heat transfer pipe. 8 liquid corrosion inhibitor, it is heated from liquid to gas, and enters the system pipeline to be protected through the gas flow meter 14 and the gas outlet valve 15 of the vaporizer.

Among them, in the present invention, the vaporizer 7 is provided with a liquid level gauge 12, and the liquid level gauge 12 can indicate the height of the liquid corrosion inhibitor in the liquid corrosion inhibitor heat transfer tube 8, and is used for monitoring the liquid corrosion inhibitor amount and degree of vaporization.

Among them, the air outlet of the gasifier 7 in the present invention is provided with an air-discharging valve 11, and the outlet of the heater 3 is connected to the main pipe to be protected through a bypass pipe, and the bypass pipe is provided with a gas A gasifier bypass door 16 is provided, between the heater 3 and the gasifier bypass door 16 , a drain valve 17 to the ground is provided, and a thermometer 4 is provided at the outlet of the heater 3 . The emptying valve 11 to the air and the drain valve 17 to the ground can discharge the impure gas and liquid, so as to avoid affecting the effect of subsequent anti-corrosion; The hot air is first introduced into the system pipeline to be protected to warm the pipe, so as to prevent the gaseous corrosion inhibitor from condensing and condensing to affect the gasification effect, so as to ensure that the corrosion inhibitor entering the main pipeline to be protected can be uniformly distributed in the system pipeline in gaseous form in large quantities and stably. In the process, the system pipelines are protected against rust and shutdown.

Among them, the sampling valve 13 described in the present utility model is located in front of the gas flow meter 14, and can be used to detect the concentration of the gaseous corrosion inhibitor from the gasifier 7, and input the corresponding amount and concentration of the gaseous corrosion inhibitor according to the actual working conditions. , which is helpful to further optimize the effect of subsequent shutdown protection against rust and corrosion.

Wherein, one or more of the liquid corrosion inhibitor heat transfer tubes 8 are provided, which can be set according to the required amount of liquid corrosion inhibitor for gasification and the size of the vaporizer 7. The adjacent liquid corrosion inhibitor heat transfer tubes 8 They are communicated with each other, and the liquid corrosion inhibitor injection port 9 is communicated with one of the liquid corrosion inhibitor heat transfer pipes 8 through a pipeline.

Wherein, one end of the air inlet of the vaporizer 7 is provided with a hygrometer 6, and one end of the air outlet of the vaporizer 7 is provided with a pressure gauge 10. It is used to detect the pressure inside the vaporizer 7, and cooperate with the liquid level gauge 12 to feedback the vaporization degree of the liquid corrosion inhibitor in the vaporizer 7.

In the utility model, the drying filter 1, the vaporizer 7, the liquid corrosion inhibitor heat transfer tube 8, the liquid corrosion inhibitor injection port 9 and the liquid level gauge 12 are the core of the device, and the drying filter 1 is passed through the drying filter 1 in the device. Through the installation and setting of the gasifier 7, the liquid corrosion inhibitor heat transfer tube 8, the liquid corrosion inhibitor injection port 9 and the liquid level gauge 12, the liquid corrosion inhibition is realized. The heat exchange between the agent and the high-temperature air, and the effective components of the vaporized liquid corrosion inhibitor can enter the pipeline of the thermal equipment system together with the high-temperature air to prevent rust. In practical application, the filter drier 1, the fan 2, the heater 3, the ground drain valve 17, the gasifier bypass door 16 and the gasifier outlet valve 15 are first put into waste heat to the pipes of the thermal equipment system to be protected. Prevent the effective components of the vaporized liquid corrosion inhibitor from condensing with condensation. After the liquid level gauge 12 shows that the vaporization of the liquid corrosion inhibitor decreases, the liquid corrosion inhibitor should be injected from the liquid corrosion inhibitor injection port 9 at any time in time to realize the continuous gasification of the liquid corrosion inhibitor.

The utility model provides a liquid corrosion inhibitor gasification device, taking the gasification of a liquid corrosion inhibitor for supplying the power plant boiler system outage protection as an example, to illustrate the liquid corrosion inhibitor gasification device of the present utility model .

As shown in Figure 1, firstly open the ground drain valve 17, close the gasifier intake valve 5 and gasifier bypass door 16, start the fan 2, put the heater 3 into operation, and the dry and clean air passing through the drying filter 1 passes through The fan 2 enters the heater 3 for heating, and the air temperature is controlled at 50°C by the thermometer 4. First, the sewage is discharged through the ground blowdown valve 17, and then the gasifier bypass door 16 and the gasifier outlet valve 15 are opened, and the blowdown valve 17 is closed. High temperature, dry and clean air is sent into the thermal equipment that needs to be protected to warm the pipes.

Next, when the warm pipe temperature reaches 50°C, open the air intake valve 5 and the air vent valve 11 of the vaporizer to discharge dirty air, and then close the air vent valve 11 and the vaporizer bypass door 16 . The liquid corrosion inhibitor is injected into the liquid corrosion inhibitor heat transfer tube 8 through the liquid corrosion inhibitor injection port 9, and the injection amount is controlled by a liquid level gauge. A large amount of high-temperature dry and clean air transfers heat to the liquid corrosion inhibitor through the liquid corrosion inhibitor heat transfer tube 8 in the vaporizer 7 to raise the temperature. By adjusting the heater 3 and the gas flow meter 14, the temperature of the thermometer 4 is controlled to reach between 90 °C and 100 °C, and the liquid corrosion inhibitor in the liquid corrosion inhibitor heat transfer tube 8 is continuously vaporized at this high temperature. The effective components of the corrosive agent continuously enter the pipeline of the thermal equipment system through the gas outlet valve 15 of the gasifier to prevent rust.

Finally, when the effective component concentration of the gasification corrosion inhibitor in the pipeline of the thermal equipment system meets the requirements, continue to run until the level of the liquid level gauge 12 reaches about "0", stop the heater 3, and open the emptying valve 11, To the ground blowdown valve 17, close the vaporizer outlet valve 15 and vaporizer bypass door 16, when the thermometer 4 drops to about 30°C, stop the fan 2, close the air blowdown valve 11, and the ground blowdown valve 17 . The gasification unit is out of service.

The core components included in the utility model are a drying filter 1, a vaporizer 7, a liquid corrosion inhibitor heat transfer tube 8, a liquid corrosion inhibitor injection port 9 and a liquid level gauge 12, which are effective for the production of large quantities of gasified liquid corrosion inhibitors. The provision of corrosion inhibitor components can greatly reduce the amount and cost of liquid corrosion inhibitors, and also greatly improve the anti-corrosion effect of thermal equipment, providing a reliable guarantee for the normal operation of thermal equipment.

Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the disclosure of the specification and practice. This application is intended to cover any modifications, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or common knowledge in the technical field not disclosed by the present invention. conventional technical means. The embodiments in the specification are to be regarded as exemplary only, and the true scope of the application is to be determined by the claims.

It should be understood that the present invention is not limited to the precise structures described above and shown in the accompanying drawings and that various modifications and changes may be made without departing from the scope thereof. The protection scope of the present invention is defined by the claims.

Claims (10)

1. a liquid corrosion inhibitor gasification device, is characterized in that, comprises filter drier (1), blower (2), heater (3) and gasifier (7) connected successively; One end of the gasifier (7) is provided with an air inlet, the air inlet is connected with the outlet of the heater (3) through a pipeline, and the other end is provided with an air outlet and is connected to the main pipeline to be protected through a pipeline, and the gasification A liquid corrosion inhibitor heat transfer pipe (8) is arranged in the vaporizer (7), a liquid corrosion inhibitor injection port (9) is arranged on one side of the vaporizer (7), and the liquid corrosion inhibitor injection port (9) passes through the pipeline It is communicated with the liquid corrosion inhibitor heat transfer pipe (8). 2. A liquid corrosion inhibitor gasification device according to claim 1, wherein a liquid level gauge (12) is provided on the gasifier (7) for indicating the heat transfer of the liquid corrosion inhibitor The height of the liquid corrosion inhibitor in the tube (8). 3 . A liquid corrosion inhibitor gasification device according to claim 1 , wherein the drying filter ( 1 ) has a built-in desiccant and a filter screen. 4 . 4. A liquid corrosion inhibitor gasification device according to claim 1, characterized in that, a gas flow meter (14) is sequentially provided on the pipeline connecting the gas outlet of the gasifier (7) with the main pipeline to be protected ) and the carburetor outlet valve (15). 5 . The liquid corrosion inhibitor gasification device according to claim 4 , wherein a sampling valve ( 13 ) is arranged between the gas outlet of the gasifier ( 7 ) and the gas flow meter ( 14 ). 6 . 6. A liquid corrosion inhibitor gasification device according to claim 1, characterized in that, an air outlet valve (11) is provided at the gas outlet of the gasifier (7). 7. A liquid corrosion inhibitor gasification device according to claim 1, wherein the outlet of the heater (3) is connected to the main pipeline to be protected through a bypass pipeline, and the bypass pipeline is provided with a gas carburetor bypass door (16). 8. A liquid corrosion inhibitor gasification device according to claim 7, characterized in that, a ground drain valve (17) is provided between the heater (3) and the gasifier bypass door (16). ), a thermometer (4) is provided at the outlet of the heater (3). 9. A liquid corrosion inhibitor gasification device according to claim 1, characterized in that, one or more of the liquid corrosion inhibitor heat transfer tubes (8) are provided, and adjacent liquid corrosion inhibitor heat transfer tubes (8) are provided. The heat pipes (8) are communicated with each other, and the liquid corrosion inhibitor injection port (9) is communicated with one of the liquid corrosion inhibitor heat transfer pipes (8) through a pipeline. 10. A liquid corrosion inhibitor gasification device according to claim 1, characterized in that, one end of the gas inlet of the gasifier (7) is provided with a hygrometer (6), and the gasifier (7) One end of the air outlet is provided with a pressure gauge (10).

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