CN212778027U

CN212778027U - Ultralow-temperature waste heat recovery equipment

Info

Publication number: CN212778027U
Application number: CN202021265911.4U
Authority: CN
Inventors: 杨玉奎
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-02
Filing date: 2020-07-02
Publication date: 2021-03-23
Anticipated expiration: 2030-07-02

Abstract

The utility model discloses an ultra-low temperature waste heat recovery equipment constitutes circulative cooling pipeline with H type recoverer, compressor, pre-heater and electronic expansion valve, and H type recoverer contains four interfaces, respectively with fan export, flue, compressor import and electronic expansion valve pipe connection, and fan import department is equipped with a heat exchanger, and the fire is arranged through proportional control valve and natural gas line connection to for the heat exchanger provides heat energy, be equipped with hot water line on the heat exchanger to run through the pre-heater and be connected with external heat source, the compressor export is connected with the pre-heater, and is equipped with electronic expansion valve between pre-heater and H type recoverer. The utility model discloses a circulative cooling pipeline effectively reduces exhaust gas temperature, reaches environment exhaust temperature, and the pipeline is inside to adopt the corrosion resistance pipeline, and increase of service life is as throttle step-down, regulation flow with electronic expansion valve, has improved inside regulation sensitivity, reduces discharging as the cooling with H type recoverer, makes overall structure compacter.

Description

Ultralow-temperature waste heat recovery equipment

Technical Field

The utility model relates to an energy-concerving and environment-protective technical field, more specifically the saying so relates to an ultra-low temperature waste heat recovery equipment.

Background

For years, with the rapid and continuous development of the economy of China, the domestic atmospheric environment is continuously deteriorated. At present, the industry generating a large amount of pollution is accompanied with the emission of ultralow temperature gas containing a large amount of water vapor, acidic substances and other harmful substance particles. Therefore, it is important to recover such low temperature gas.

The traditional flue gas recovery device comprises a pipeline unit, a power unit, a control unit and a cooling area; the initial end of the pipeline unit is connected with a smoke outlet of the reaction device, the tail end of the pipeline unit is connected with the aging device and the cooling device, a cooling area of the reaction device is generally divided into four cooling areas, wherein the temperature of a cold area a is about 300C, the temperature of a cold area b is about 200 ℃, and the temperature of a cold area C is about 100C, hot waste gas with high temperature in the cold area a and the cold area b of the reaction device is mainly recycled, and no equipment is available for effectively recycling the temperature of the part of waste gas due to low temperature in the cold area C, the part of heat is wasted, and meanwhile, high-temperature flue gas discharged by a boiler is directly discharged into the atmosphere through a chimney, the greenhouse effect is intensified, and the environment is affected. In addition, because the vapor-containing gas mostly contains acidic substances and other harmful substances, the vapor-containing gas has great corrosion to pipelines and conventional heat exchangers, influences the service life of equipment and increases the difficulty of pollution discharge treatment.

Therefore, how to provide an ultralow temperature waste heat recovery device which can effectively reduce the exhaust gas temperature to reach the environmental temperature and is corrosion-resistant is a problem that needs to be solved urgently by technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a can effectively reduce the fume emission temperature, reach ambient temperature, moreover corrosion-resistant ultra-low temperature waste heat recovery equipment.

In order to achieve the above object, the present invention provides the following technical solutions, which mainly include: the device comprises a fire grate, a heat exchanger, a fan, a recoverer, a preheater, a compressor and a flue; the H-shaped recoverer comprises four interfaces and is respectively connected with a fan outlet, a flue, a compressor inlet and an electronic expansion valve pipeline, a heat exchanger is arranged at the fan inlet, the fire grate is connected with a natural gas pipeline through a proportional control valve and provides heat energy for the heat exchanger, a hot water pipeline is arranged on the heat exchanger and penetrates through the preheater to be connected with an external heat source, the compressor outlet is connected with the preheater, and the electronic expansion valve is arranged between the preheater and the H-shaped recoverer.

Preferably, in the ultra-low temperature waste heat recovery device, the heat exchanger is a multi-tube type heat exchanger.

Preferably, in the ultralow temperature waste heat recovery equipment, the flue is an internal anti-corrosion flue.

Preferably, in the ultralow temperature waste heat recovery device, a diversion trench is arranged at the joint of the fan, the H-shaped recoverer and the heat exchanger.

Preferably, in the ultralow temperature waste heat recovery device, the induced air of the fan faces one end of the H-shaped recoverer.

Preferably, in the ultralow temperature waste heat recovery equipment, the connecting pipelines between the equipment adopt inner anti-corrosion pipelines.

According to the technical scheme, compare with prior art, the utility model discloses an ultra-low temperature waste heat recovery equipment, the utility model discloses an adopt H type recoverer, compressor, pre-heater and electronic expansion valve to constitute the circulative cooling pipeline, effectively reduce exhaust temperature, the pipeline is inside to adopt the corrosion resistance pipeline, increase of service life, with electronic expansion valve as throttle step-down, regulation flow, improved inside regulation sensitivity, regard H type recoverer as cooling and emission reduction, energy-concerving and environment-protective, make overall structure compacter, the operation is more stable, makes the utility model has the characteristics of can effectively reduce exhaust temperature, energy saving and emission reduction, moreover corrosion-resistant.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Please refer to fig. 1, which is a super low temperature waste heat recycling device disclosed in the present invention.

The utility model discloses, mainly include: the device comprises a fire row 2, a heat exchanger 3, a fan 4, a recoverer 5, a preheater 8, a compressor 7 and a flue 6; the H-shaped recoverer 5 comprises four interfaces, the four interfaces are respectively connected with an outlet of a fan 4, a flue 6, an inlet of the compressor 7 and an inner balance type expansion valve 9 through pipelines, a heat exchanger 3 is arranged at the inlet of the fan 4, the fire grate 2 is connected with a natural gas pipeline through a proportional control valve 1 and provides heat energy for the heat exchanger 3, a hot water pipeline is arranged on the heat exchanger 3 and penetrates through the preheater 8 to be connected with an external heat source, an outlet of the compressor 7 is connected with the preheater 8, and the electronic expansion valve 9 is arranged between the preheater 8 and the H-shaped recoverer 5.

In order to further optimize the above technical solution, the heat exchanger 3 is a multi-tube heat exchanger 3.

In order to further optimize the technical scheme, the flue 6 is an internal anti-corrosion flue 6.

In order to further optimize the technical scheme, a diversion trench is arranged at the joint of the fan 4, the H-shaped recoverer 5 and the heat exchanger 3.

In order to further optimize the technical scheme, the induced air of the fan 4 faces one end of the H-shaped recoverer 5.

In order to further optimize the technical scheme, the connecting pipelines among the devices are all internal anti-corrosion pipelines.

In order to further optimize the technical scheme, the working efficiency of the fire grate 2 is controlled by adjusting the proportional control valve 1, the fire grate 2 provides heat energy for the heat exchanger 3, the fluid is heated to the necessary temperature by the heat exchanger 3, the preheater 8 preheats the fluid to provide standard technological parameters for the working procedure operation, the fan 4 transmits the high-temperature flue gas generated by the heat exchanger 3 to the H-shaped recoverer 5, at the moment, the compressor 7 raises the suction pressure state to the exhaust pressure state, the heat of the high-temperature flue gas in the H-shaped recoverer 5 enters the preheater 8 through the compressor 7 and returns to the H-shaped recoverer 5 through the electronic expansion valve 9, because the heat of the high-temperature flue gas is in a high-temperature state in the H-shaped recoverer 5, the high-temperature flue gas is driven by the compressor 7 to flow through the preheater and the electronic expansion valve 9, so that the temperature of the high-temperature flue gas is reduced and the high-temperature flue gas returns to the H-shaped recoverer 5 again, and the low-temperature flue gas flows out of the flue 6.

In order to further optimize the above technical solution, how the electronic expansion valve 9 and the H-type recoverer 5 achieve the refrigeration effect belongs to the prior art, and therefore, the details are not repeated.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides an ultra-low temperature waste heat recovery equipment which characterized in that mainly includes: the device comprises a fire grate, a heat exchanger, a fan, a waste heat device, a compressor and a flue; wherein, H type expansion valve, compressor, waste heat ware and interior balanced expansion valve constitute the circulative cooling pipeline, H type expansion valve contains four interfaces, respectively with fan export, flue, compressor import and interior balanced expansion valve pipe connection, fan import department is equipped with a heat exchanger, the fire is arranged and is connected with natural gas line through the proportional control valve to for the heat exchanger provides heat energy, be equipped with the hot water pipeline on the heat exchanger to run through the waste heat ware and be connected with external heat source, the compressor export is connected with the waste heat ware to be equipped with interior balanced expansion valve between waste heat ware and H type expansion valve.

2. An ultra-low temperature waste heat recovery device as claimed in claim 1, wherein the heat exchanger is a double-tube plate type heat exchanger.

3. The ultra-low temperature waste heat recovery device as claimed in claim 1, wherein the flue is an inner corrosion-proof flue.

4. The ultra-low temperature waste heat recovery device as claimed in claim 1, wherein a sealing plug is arranged at the connection of the fan, the H-shaped expansion valve and the heat exchanger.

5. An ultra-low temperature waste heat recovery device as claimed in claim 4, wherein the induced air of the fan is directed towards one end of the H-shaped expansion valve.

6. An ultra-low temperature waste heat recovery device as claimed in claim 1, wherein the connecting pipeline between each device is an inner anti-corrosion pipeline.