CN221505283U - LNG gasification device with low energy consumption for natural gas power station - Google Patents

Abstract

The utility model discloses an LNG gasification device with low energy consumption for a natural gas power station, which belongs to the field of LNG gasification devices and comprises a device main body, wherein a combustion inner cylinder is arranged in the device main body, a smoke exhaust pipe is arranged at the upper end of the combustion inner cylinder, a material feeding pipe is arranged on the device main body, a material discharging pipe is arranged on the device main body, and a waste heat recovery structure is arranged on the smoke exhaust pipe. Through the waste heat recovery structure that sets up, can carry out waste heat recovery to the flue gas heat of discharging in the tobacco pipe, the heat after the recovery is conducted in the material inlet pipe through preheating the subassembly, can preheat liquid LNG for follow-up required heat to the gasification of LNG is lower, has reduced the energy consumption of whole gasification process, and the return bend setting in the preheating subassembly is in heat exchange cover upper end, guarantees that the preheating process is longer, guarantees preheating effect, sets up the drain pipe that has the shutoff end cover on the heat exchange cover, is convenient for empty the water in the heat exchange cover completely, simple structure, excellent in use effect.

Description

LNG gasification device with low energy consumption for natural gas power station

Technical Field

The utility model relates to the field of LNG gasification devices, in particular to a low-energy-consumption LNG gasification device of a natural gas power station.

Background

Liquefied Natural Gas (LNG) is a clean and efficient energy source and is widely applied to the fields of power generation, urban fuel gas and the like. In natural gas power plants, LNG needs to be converted to a gaseous state by a gasification device and then used for combustion power generation. The conventional LNG gasification device generally adopts an air-to-gas gasification mode, and the gasification efficiency is low and the use cost is high.

The prior patent number is: CN208155113U discloses a direct-fired LNG gasification device, in which, by setting a combustion chamber, the gasification device is used in combination with a gasification coil, and adopts a direct heating mode, not only can the gasification efficiency be improved, but also the occupied area can be reduced; easy maintenance, reduced cost and maintenance degree of difficulty. However, in the above patent, the flue gas generated by combustion is directly discharged, and the heat in the flue gas cannot be recycled, so that the heat in the flue gas is directly lost, more heat is required for the gasification of LNG in unit volume, the energy consumption in the gasification process is high, and the use cost of gasification is increased.

Disclosure of utility model

The utility model mainly aims to provide an LNG gasification device with low energy consumption for a natural gas power station, which can effectively solve the problems in the background technology.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

The utility model provides a LNG gasification equipment of natural gas power station low energy consumption, includes the device main part, the inside of device main part is provided with the burning inner tube, and the upper end of burning inner tube is installed and is discharged the tobacco pipe, be equipped with the material inlet pipe in the device main part, and install the material discharging pipe in the device main part, it installs waste heat recovery structure on the tobacco pipe to discharge the tobacco, and waste heat recovery structure is connected with the material inlet pipe, waste heat recovery structure includes spiral recovery pipe, inlet tube, water pipe and preheat the subassembly, spiral recovery pipe sets up on discharging the tobacco pipe, inlet tube and water pipe connection are on spiral recovery pipe, preheat the subassembly setting at the end of water pipe.

Preferably, the device main body is provided with a burner connecting frame, and the burner connecting frame is fixedly connected with the combustion inner cylinder.

Preferably, the device main body is provided with a water injection pipe, and the device main body is fixedly connected with a water outlet pipe.

Preferably, the spiral recovery pipe winding sets up on discharging fume the tub, inlet tube, aqueduct and spiral recovery pipe intercommunication, preheat the subassembly cover and establish on the material inlet pipe, through the waste heat recovery structure that sets up, can carry out waste heat recovery to the flue gas heat of discharging in the tub of discharging fume, in the heat after retrieving is conducted the material inlet pipe through preheating the subassembly, can preheat liquid LNG for follow-up required heat to the gasification of LNG is lower, has reduced the energy consumption of whole gasification process.

Preferably, the preheating component includes heat exchange sleeve, connector, return bend, drain pipe and shutoff end cover, the heat exchange sleeve cover is established on the material inlet pipe, and the inside of heat exchange sleeve is equipped with the heat transfer chamber, connector and return bend are fixed in the upper end of heat exchange sleeve, the drain pipe sets up the lower extreme at the heat exchange sleeve, the tip at the drain pipe is connected to the shutoff end cover, and the return bend setting in the preheating component is in heat exchange sleeve upper end, guarantees that the preheating process is longer, guarantees preheating effect, sets up the drain pipe that has the shutoff end cover on the heat exchange sleeve, is convenient for empty the water in the heat exchange sleeve completely, simple structure, excellent in use effect.

Compared with the prior art, the utility model has the following beneficial effects: this LNG gasification equipment of natural gas power station low energy consumption, through the waste heat recovery structure of setting, can carry out waste heat recovery to the flue gas heat of discharging in the fume tube, heat after the recovery is conducted in the material inlet pipe through preheating the subassembly, can preheat liquid LNG for follow-up required heat to the gasification of LNG is lower, the energy consumption of whole gasification process has been reduced, the return bend setting in the preheating the subassembly is in the heat exchange sleeve upper end, guarantee to preheat the process longer, guarantee to preheat the effect, set up the drain pipe that has the shutoff end cover on the heat exchange sleeve, the water in the complete evacuation heat exchange sleeve of being convenient for, the steam generator is simple in structure, excellent in use effect.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of the waste heat recovery structure of the present utility model;

FIG. 3 is a schematic diagram of a preheating assembly according to the present utility model.

In the figure: 1. a device body; 2. a combustion inner barrel; 3. a smoke exhaust pipe; 4. a material feed pipe; 5. a material discharging pipe; 6. a waste heat recovery structure; 601. a spiral recovery tube; 602. a water inlet pipe; 603. a water conduit; 604. a preheating assembly; 6041. a heat exchange sleeve; 6042. a connector; 6043. bending the pipe; 6044. a drain pipe; 6045. plugging the end cover; 7. a burner connection rack; 8. a water injection pipe; 9. and a water outlet pipe.

Detailed Description

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

As shown in fig. 1-3, an LNG gasification device with low energy consumption for a natural gas power station comprises a device main body 1, wherein a combustion inner cylinder 2 is arranged in the device main body 1, a smoke exhaust pipe 3 is arranged at the upper end of the combustion inner cylinder 2, a material feeding pipe 4 is arranged on the device main body 1, a material discharging pipe 5 is arranged on the device main body 1, a waste heat recovery structure 6 is arranged on the smoke exhaust pipe 3, the waste heat recovery structure 6 is connected with the material feeding pipe 4, a combustor connecting frame 7 is arranged on the device main body 1, the combustor connecting frame 7 is fixedly connected with the combustion inner cylinder 2, a water injection pipe 8 is arranged on the device main body 1, and a water outlet pipe 9 is fixedly connected on the device main body 1.

When using LNG gasification equipment, device main part 1 stable place, be equipped with the gasification coil that is connected with material inlet pipe 4 and material discharging pipe 5 in the inside of device main part 1, inject water to the inside of device main part 1 through water injection pipe 8, be connected with combustor link 7, after igniting the combustor, the inside burning of burning inner tube 2 produces heat, the heat is about the inside water heating of device main part 1, simultaneously liquid LNG enters into in the gasification coil through material inlet pipe 4, heated water heats LNG through gasification coil, thereby realize the gasification, LNG after the gasification can use and burn the electricity generation from material discharging pipe 5 discharge, the flue gas that burns in the burning inner tube 2 is discharged through exhaust pipe 3, water injection in waste heat recovery structure 6, carry out waste heat recovery to the flue gas in the exhaust pipe 3 through waste heat recovery structure 6, heat after the recovery acts on material inlet pipe 4 departments, can preheat the liquid LNG that passes through in the material inlet pipe 4, make the required energy of follow-up gasification lower, the simple structure, the effect of using is good.

Through the above embodiment, the waste heat recovery structure 6 comprises a spiral recovery pipe 601, a water inlet pipe 602, a water guide pipe 603 and a preheating component 604, wherein the spiral recovery pipe 601 is arranged on the smoke exhaust pipe 3, the water inlet pipe 602 and the water guide pipe 603 are connected to the spiral recovery pipe 601, the preheating component 604 is arranged at the tail end of the water guide pipe 603, the spiral recovery pipe 601 is wound on the smoke exhaust pipe 3, the water inlet pipe 602 and the water guide pipe 603 are communicated with the spiral recovery pipe 601, the preheating component 604 is sleeved on the material feeding pipe 4, the preheating component 604 comprises a heat exchange sleeve 6041, a connector 6042, a bent pipe 6043, a water discharge pipe 6044 and a plugging end cover 6045, the heat exchange sleeve 6041 is sleeved on the material feeding pipe 4, a heat exchange cavity is arranged in the heat exchange sleeve 6041, the connector 6042 and the bent pipe 6043 are fixed at the upper end of the heat exchange sleeve 6041, drain pipe 6044 sets up the lower extreme at heat exchange sleeve 6041, shutoff end cover 6045 connects the tip at drain pipe 6044, through waste heat recovery structure 6 that sets up, can carry out waste heat recovery to the flue gas heat of discharging in the tobacco pipe 3, heat after the recovery is conducted in material inlet pipe 4 through preheating component 604, can preheat liquid LNG, make follow-up required heat for the gasification of LNG lower, the energy consumption of whole gasification process has been reduced, elbow 6043 in preheating component 604 sets up in heat exchange sleeve 6041 upper end, guarantee to preheat the process longer, guarantee to preheat the effect, set up drain pipe 6044 that has shutoff end cover 6045 on heat exchange sleeve 6041, be convenient for empty the water in the heat exchange sleeve 6041 completely, and a structure is simple, and the effect of use is excellent.

In the gasification process of LNG, the flue gas is discharged through the smoke exhaust pipe 3, water is injected into the spiral recovery pipe 601 through the water inlet pipe 602, water rises to the highest position in the spiral recovery pipe 601 in a spiral mode, in the process, the water absorbs heat of the flue gas inside the smoke exhaust pipe 3 and rises in temperature, then the water enters a heat exchange cavity on the heat exchange sleeve 6041 through the water guide pipe 603, the heated water preheats LNG passing through the material feeding pipe 4 through the heat exchange sleeve 6041, the purpose of reducing energy consumption is achieved, the water after heat exchange is discharged through the bent pipe 6043, when the device is not used, the water inside the heat exchange sleeve 6041 needs to be completely discharged, the plugging end cover 6045 at the end part of the water discharge pipe 6044 can be detached at the moment, the water in the heat exchange sleeve 6041 is discharged, the structure is simple, and the use effect is excellent.

The foregoing has described the principles, features and advantages of the present utility model. It will be apparent to those skilled in the art from this disclosure that the foregoing is not a limitation of the utility model, and that the foregoing embodiments and descriptions illustrate the basic principles and features of the utility model, but that various modifications can be made therein without departing from the spirit of the utility model, and that such modifications are intended to be within the scope of the utility model as claimed.

Claims (5)

1. The utility model provides a LNG gasification equipment of natural gas power station low energy consumption, includes the device main part, the inside of device main part is provided with the burning inner tube, and the upper end of burning inner tube is installed and is discharged the tobacco pipe, be equipped with the material inlet pipe in the device main part, and install the material discharging pipe in the device main part, its characterized in that: the waste heat recovery structure is arranged on the smoke exhaust pipe and connected with the material feeding pipe, and comprises a spiral recovery pipe, a water inlet pipe, a water guide pipe and a preheating component.

2. The low energy LNG gasification plant of claim 1, wherein: the device body is provided with a burner connecting frame which is fixedly connected with the combustion inner cylinder.

3. The low energy LNG gasification plant of claim 2, wherein: the device body is provided with a water injection pipe, and the device body is fixedly connected with a water outlet pipe.

4. A low energy LNG gasification plant according to claim 3 wherein: the spiral recovery pipe is arranged on the smoke exhaust pipe, the water inlet pipe and the water guide pipe are connected to the spiral recovery pipe, the preheating component is arranged at the tail end of the water guide pipe, the spiral recovery pipe is wound on the smoke exhaust pipe, the water inlet pipe, the water guide pipe and the spiral recovery pipe are communicated, and the preheating component is sleeved on the material feeding pipe.

5. The low energy LNG gasification plant of claim 4, wherein: the preheating component comprises a heat exchange sleeve, a connector, an elbow pipe, a drain pipe and a plugging end cover, wherein the heat exchange sleeve is sleeved on a material feeding pipe, a heat exchange cavity is formed in the heat exchange sleeve, the connector and the elbow pipe are fixed at the upper end of the heat exchange sleeve, the drain pipe is arranged at the lower end of the heat exchange sleeve, and the plugging end cover is connected with the end part of the drain pipe.