CN217978862U

CN217978862U - Energy-saving and environment-friendly device of gas furnace and energy-saving gas furnace thereof

Info

Publication number: CN217978862U
Application number: CN202220252568.2U
Authority: CN
Inventors: 曾洪骏; 闫永勤
Original assignee: Beijing Shidai Keyi New Energy Technology Co ltd
Current assignee: Beijing Shidai Keyi New Energy Technology Co ltd
Priority date: 2022-02-07
Filing date: 2022-02-07
Publication date: 2022-12-06
Anticipated expiration: 2032-02-07

Abstract

The utility model relates to an energy-concerving and environment-protective device of gas furnace and energy-saving gas furnace thereof, utilize the unit including fan, combustion furnace, dehumidification unit and heat, the heat utilize the unit include the box and set gradually cooling unit, one-level heat utilization unit and the second grade heat utilization unit in the box, this cooling unit, one-level heat utilization unit and second grade heat utilization unit set gradually along the flow direction of flue gas cooling unit and one-level heat utilize the unit between install the dehumidification unit. The utility model has the advantages that: through the setting of heat utilization unit, set up the integrated configuration that heat utilization unit set up to cooling unit, one-level heat utilization unit and second grade heat utilization unit, at first cool down, then preheat, the process of reheating to the flue gas, realize that flue gas temperature drops, the air inlet preheats, takes off white and produce hydrothermal effect. The consumption of natural gas in subsequent combustion can be reduced, and the purpose of energy conservation is realized.

Description

Energy-saving and environment-friendly device of gas furnace and energy-saving gas furnace thereof

Technical Field

The utility model relates to an energy-concerving and environment-protective device of gas furnace and energy-saving gas furnace thereof relates to the environmental protection equipment field.

Background

Realizing carbon peak reaching and carbon neutralization is an important strategic decision for building and manufacturing strong countries and promoting high-quality development. In order to promote important industrial and commercial energy-saving and carbon-reducing and green transformation, an effective energy-saving and low-carbon technology must be popularized in important fields. Meanwhile, policy measures such as atmosphere environmental protection need to be taken into consideration, emission of pollutants such as nitric oxides and wet flue gas (white steam) is reduced, haze is reduced, and finally energy conservation and environmental protection are achieved.

Natural gas is one of the main energy substances, and the dosage and the proportion of the natural gas are increased year by year. The gas furnace of general adoption in worker, business often appears exhaust gas temperature height, calorific loss serious, nitrogen oxide content scheduling problem on the high side, the utility model aims at solving above-mentioned problem, improves gas energy utilization rate, reduces nitrogen oxide content.

Natural gas is a relatively low carbon fuel and its usage is escalating as coal-to-gas conversion is common. However, the common gas furnace adopts a mode of directly discharging flue gas, and the flue gas discharge has the following disadvantages:

1. the flue gas temperature is higher: because of insufficient waste heat utilization degree, the temperature of the flue gas can generally reach over 160 ℃, even about 300 ℃, a large amount of heat is taken away by the hot flue gas, the consumption of natural gas is increased, and the energy conservation and consumption reduction are not facilitated.

2. The content of nitrogen oxides is high: because the temperature of the flue gas is higher, the residual oxygen in the flue gas continues to react, the concentration of nitrogen oxides is easily increased, and the best mode is to reduce the emission temperature of the flue gas.

3. Moisture discharges more: because the natural gas burning produces certain water yield, vapor forms a large amount of white steam lumps along with the cooling of flue gas along with the flue gas is discharged, causes the haze easily and aggravates winter.

In conclusion, the common natural gas furnace has the defects of high flue gas temperature, high nitrogen oxide content and high moisture emission. Through the utility model discloses can realize that flue gas temperature reduces, nitrogen oxide reduces, the efficiency that the moisture was eliminated basically.

SUMMERY OF THE UTILITY MODEL

For overcoming prior art's defect, the utility model provides an energy-concerving and environment-protective device of gas furnace and energy-saving gas furnace thereof realizes that flue gas temperature descends, the air inlet preheats, takes off white, produces hydrothermal effect in step, the technical scheme of the utility model is:

an energy-saving and environment-friendly device of a gas furnace comprises a fan, a combustion furnace, a dehumidification unit and a heat utilization unit, wherein the heat utilization unit comprises a box body, and a cooling unit, a primary heat utilization unit and a secondary heat utilization unit which are sequentially arranged in the box body; the second-level heat utilization unit is provided with an atmosphere inlet communicated with the outside, the gas outlet of the second-level heat utilization unit is communicated with the air inlet of the fan, the air outlet of the fan is communicated with the air inlet of the gas furnace, and the gas outlet of the gas furnace is connected to the gas inlet of the cooling unit.

A heat exchange tube is arranged in the box body, the heat exchange tube is arranged along the vertical direction, two sets of separating mechanisms are arranged on the periphery of the heat exchange tube, a primary heat utilization unit is formed in the box body between the two sets of separating mechanisms, a cooling unit is formed in the box body at the lower part of the primary heat utilization unit, and a secondary heat utilization unit is formed in the box body at the upper part; one end of the heat exchange tube is communicated with the cooling unit, and the other end of the heat exchange tube extends to the secondary heat utilization unit and is communicated with the secondary heat utilization unit.

Each separating mechanism comprises a partition plate and a sealing ring, the sealing ring is sleeved on the periphery of the heat exchange tube, and the partition plate is installed between the inner wall of the box body and the sealing ring.

And radiating fins are arranged on the periphery of the heat exchange tube.

The sealing ring is arranged in a conical shape.

An energy-saving gas furnace comprises the gas furnace energy-saving and environment-friendly device.

The utility model has the advantages that: through the setting of heat utilization unit, set up the integrated configuration that heat utilization unit set up to cooling unit, one-level heat utilization unit and second grade heat utilization unit, at first cool down, then preheat, the process of reheating to the flue gas, realize that flue gas temperature drops, the air inlet preheats, takes off white and produce hydrothermal effect. The consumption of natural gas in subsequent combustion can be reduced, and the purpose of energy conservation is realized.

Drawings

Fig. 1 is a schematic view of the main structure of the present invention.

Fig. 2 is a schematic view of the structure of the partition mechanism in fig. 1.

Detailed Description

The present invention will be further described with reference to specific embodiments, and advantages and features of the present invention will become more apparent as the description proceeds. These examples are merely illustrative and do not limit the scope of the invention in any way. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention, and that such changes and modifications are intended to be included within the scope of the invention.

Referring to fig. 1 and 2, the utility model relates to an energy-saving and environment-friendly device of a gas furnace, which comprises a fan 1, a combustion furnace 2, a dehumidification unit 4 and a heat utilization unit 3, wherein the heat utilization unit 3 comprises a box body 5, and a cooling unit 31, a first-level heat utilization unit 32 and a second-level heat utilization unit 33 which are sequentially arranged in the box body 5, the cooling unit 31, the first-level heat utilization unit 32 and the second-level heat utilization unit 33 are sequentially arranged along the flow direction of flue gas, the dehumidification unit 4 is arranged between the cooling unit 31 and the first-level heat utilization unit 32, the dehumidification unit 4 is arranged outside the box body 5, and a flue gas outlet 7 is arranged at the first-level heat utilization unit 32; an atmosphere inlet 8 communicated with the outside is arranged at the secondary heat utilization unit 33, an air outlet 12 of the secondary heat utilization unit 33 is communicated with an air inlet of the fan 1, an air outlet of the fan 1 is communicated with an air inlet of the gas furnace 2, and an air outlet of the gas furnace 2 is connected to an air inlet 6 of the cooling unit 31.

A heat exchange tube 11 is arranged in the box body 5, the heat exchange tube 11 is arranged along the vertical direction, two sets of separating mechanisms are arranged on the periphery of the heat exchange tube 11, a primary heat utilization unit 32 is formed in the box body 5 between the two sets of separating mechanisms, a cooling unit 31 is formed in the box body 5 at the lower part of the primary heat utilization unit 32, and a secondary heat utilization unit 33 is formed in the box body 5 at the upper part; one end of the heat exchange tube 11 is communicated with the cooling unit 31, and the other end extends to the secondary heat utilization unit 33 and is communicated with the secondary heat utilization unit 33.

The heat exchange tube is in order to incline in high temperature heat transfer to the low temperature, the utility model discloses a cooling unit, one-level heat utilize unit and second grade heat to utilize the unit integration in the box, through fall into the three-section with the heat exchange tube and realize, its advantage lies in showing the complexity that reduces whole equipment, realizes exquisite structure.

As shown in fig. 2, each of the separating mechanisms includes a partition plate 9 and a sealing ring 10, the sealing ring 10 is sleeved on the periphery of the heat exchange tube 11, and the partition plate 9 is installed between the inner wall of the box 5 and the sealing ring 10.

In order to improve the heat dissipation efficiency, a heat dissipation fin is disposed at the periphery of the heat exchange tube 11.

The sealing ring 10 is arranged in a conical shape.

The utility model discloses still relate to an energy-saving gas furnace, include the energy-concerving and environment-protective device of gas furnace.

The utility model discloses a theory of operation is:

1. the combustion process comprises the following steps: air is sent into the gas furnace by the fan, meanwhile, gas is introduced by the burner to burn, and hot flue gas (taking hot flue gas at 200 ℃ as an example) is discharged after most of heat is utilized, and carries residual heat and contains water vapor.

2. Cooling flue gas: the hot flue gas enters a cooling link, part of heat carried in the hot flue gas is given out, and the temperature of the hot flue gas is reduced to about 60 ℃. The heat given out by the flue gas is used for heating the flue gas at the rear section and preheating the air.

3. Flue gas dehumidification: liquid water can be condensed out from the flue gas at the temperature of below 60 ℃, and a dehumidification unit is adopted for condensation and dehumidification. The dehumidification unit adopts water cooling, tap water is introduced, and hot water generated by the dehumidification unit is about 45 ℃ and can be used for bathing, heating and the like. After the flue gas passes through the dehumidification section, the temperature is reduced to be below 40 ℃, and the moisture content is reduced by more than 75%.

4. And (3) reheating the flue gas: after the flue gas is dehumidified, the water vapor in the flue gas is in a saturated state, the flue gas is heated by the heat carried by the flue gas initially through the primary heat utilization unit, the temperature is raised to be above 80 ℃, and the flue gas enters a dry state. White smoke can not appear after the smoke is discharged to the atmosphere, and white removal can be realized.

5. Air preheating: the air which directly enters the combustion furnace to support combustion originally is heated by the secondary heat utilization unit, and the temperature can be raised to about 100 ℃. Because the air temperature rises, the consumption of natural gas in subsequent combustion can be reduced, and the energy-saving effect is realized.

Through the process, the processes of reducing the temperature of the flue gas, preheating the inlet air, removing the white water and generating the hot water are synchronously completed.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. An energy-saving and environment-friendly device of a gas furnace is characterized by comprising a fan, a combustion furnace, a dehumidification unit and a heat utilization unit, wherein the heat utilization unit comprises a box body, and a cooling unit, a primary heat utilization unit and a secondary heat utilization unit which are sequentially arranged in the box body; the second-level heat utilization unit is provided with an atmosphere inlet communicated with the outside, the gas outlet of the second-level heat utilization unit is communicated with the air inlet of the fan, the air outlet of the fan is communicated with the air inlet of the gas furnace, and the gas outlet of the gas furnace is connected to the gas inlet of the cooling unit.

2. The energy-saving and environment-friendly device for the gas furnace as claimed in claim 1, wherein a heat exchange tube is arranged in the box body, the heat exchange tube is arranged along the vertical direction, two sets of separating mechanisms are arranged at the periphery of the heat exchange tube, the first-stage heat utilization unit is formed in the box body between the two sets of separating mechanisms, a cooling unit is formed in the box body at the lower part of the first-stage heat utilization unit, and a second-stage heat utilization unit is formed in the box body at the upper part of the first-stage heat utilization unit; one end of the heat exchange tube is communicated with the cooling unit, and the other end of the heat exchange tube extends to the second-stage heat utilization unit and is communicated with the second-stage heat utilization unit.

3. An energy-saving and environment-friendly device for a gas furnace as claimed in claim 2, wherein each separating mechanism comprises a partition plate and a sealing ring, the sealing ring is sleeved on the periphery of the heat exchange tube, and the partition plate is arranged between the inner wall of the box body and the sealing ring.

4. An energy-saving and environment-friendly device for a gas furnace as claimed in claim 2 or 3, wherein the heat exchange tube is provided with radiating fins at its periphery.

5. An energy saving and environmental protection device for gas furnace according to claim 3 wherein said sealing ring is tapered.

6. An energy saving gas burner characterized in that it comprises an energy saving and environmental protection device of the gas burner of any one of claims 1 to 5.