CN214276159U

CN214276159U - Condensation integrated boiler capable of effectively utilizing heat of flue gas

Info

Publication number: CN214276159U
Application number: CN202120029217.0U
Authority: CN
Inventors: 孙以松; 周海军; 杨康
Original assignee: Jiangsu Shuangyang Boiler Pressure Vessel Co ltd
Current assignee: Jiangsu Shuangyang Boiler Pressure Vessel Co ltd
Priority date: 2021-01-07
Filing date: 2021-01-07
Publication date: 2021-09-24
Anticipated expiration: 2031-01-07

Abstract

The utility model relates to the field of boiler equipment, in particular to a condensation integrated boiler capable of effectively utilizing the heat of flue gas, which comprises a boiler body and a biomass burner, wherein one end inside the boiler body is provided with a front fire-resistant wall, and the other end opposite to the front fire-resistant wall is provided with a rear fire-resistant wall; an inner coil pipe and a ceiling pipe communicated with the inner coil pipe are arranged between the front fire-resistant wall and the rear fire-resistant wall; and an outer coil is arranged on the outer ring of the inner coil. The utility model discloses the heat that carries in can the make full use of flue gas for the whole thermal efficiency of boiler is higher.

Description

Condensation integrated boiler capable of effectively utilizing heat of flue gas

Technical Field

The utility model relates to a boiler equipment field, concretely relates to can effectively utilize thermal condensation integral type boiler of flue gas.

Background

Due to the characteristics of high temperature of the organic heat carrier, the exhaust gas temperature of most of the existing organic heat carrier boilers is higher and reaches more than 300 ℃ individually. The efficiency is calculated by the low-order calorific value, the efficiency is usually about 82%, the physical sensible heat is wasted greatly, and the latent heat of vaporization with the difference of the high-order calorific values is wasted completely, so that a large amount of energy is consumed, and the operation cost of the boiler is increased.

Taking biomass as an example, the biomass mainly comprises C, H, O, and because the biomass contains a considerable amount of H element, the amount of steam generated by combustion is large, and a large amount of heat is absorbed, so that the high calorific value of the biomass is about 10% higher than the low calorific value, and about 10% of the heat is taken away by the steam. If the temperature of the exhaust gas of the boiler is reduced to a sufficiently low level. The superheated water vapor in the flue gas can be condensed into water to release latent heat of vaporization, so that the latent heat of vaporization in the flue gas can be recycled.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a can effectively utilize thermal condensation integral type boiler of flue gas.

In order to achieve the above purpose, the utility model provides a following technical scheme: including boiler body and biomass burner, its characterized in that: a front fire-resistant wall is arranged at one end in the boiler body, and a rear fire-resistant wall is arranged at the other end opposite to the front fire-resistant wall;

an inner coil pipe and a ceiling pipe communicated with the inner coil pipe are arranged between the front fire-resistant wall and the rear fire-resistant wall;

an outer coil pipe is arranged on the outer ring of the inner coil pipe;

one end of the inner coil pipe is connected with the biomass burner, a first flue gas channel is arranged between the inner coil pipe and the outer coil pipe, and a second flue gas channel is arranged between the outer coil pipe and the inner wall of the boiler body; and the flue gas combusted by the biomass burner enters the inner part of the inner coil pipe, passes through the first flue gas channel and then passes through the second flue gas channel and then is discharged through a flue gas outlet of the boiler body.

Furthermore, the inner side of the inner coil pipe, the first smoke channel and the second smoke channel form an S-shaped channel.

Further, the outlet end of the flue gas outlet is connected with a normal-pressure energy saver.

Further, the normal-pressure energy saver comprises an energy saver and a normal-pressure water tank which are communicated with each other; the energy saver is provided with a water inlet and a water outlet and is communicated with the normal-pressure water tank.

Furthermore, a plurality of energy-saving tube bundles are arranged in the energy saver.

Furthermore, the energy-saving tube bundle consists of a plurality of energy-saving tubes.

Furthermore, the water inlet and the water outlet are both communicated with a normal-pressure water tank.

Contrast prior art not enough, the utility model provides a beneficial effect that technical scheme brought: when the biomass burner is used, fuel is mixed with air in the biomass burner and then is ignited by the electronic ignition rod, the mixture is sprayed into the furnace pipe to be burnt, high-temperature flue gas passes through the inner coil pipe from the furnace pipe, passes through the first flue gas channel and the second flue gas channel and then enters the normal-pressure water tank through the flue gas outlet, and finally the flue gas is treated by equipment such as dust removal equipment and then is discharged into the atmosphere; simultaneously because the water in the water tank passes through the continuous circulation of circulating pump, the continuous replacement of the hot water in the energy-saving appliance comes out, consequently the temperature in the ordinary pressure energy-saving appliance continuously keeps at low water temperature, make the water in the ordinary pressure energy-saving appliance can continuously cool off the flue gas, thereby the heat that carries in the make full use of flue gas, the hot water in the ordinary pressure water tank can be used for other usefulness simultaneously, thereby reduce the exhaust gas temperature of organic heat carrier boiler body, improve the thermal efficiency of boiler, the heat utilization effect to carrying in the flue gas is better.

Drawings

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

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for purposes of illustration and explanation only and are not intended to limit the invention.

It should be noted that these drawings are simplified schematic views, and the basic structure of the present invention is described only in a schematic manner, and therefore, only the configuration related to the present invention is shown.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present invention is further described with reference to fig. 1.

A condensation integrated boiler capable of effectively utilizing heat of flue gas comprises a boiler body 1 and a biomass burner 2, wherein a front fire-resistant wall 3 is arranged at one end in the boiler body, and a rear fire-resistant wall 4 is arranged at the other end opposite to the front fire-resistant wall 3;

an inner coil pipe 5 and a ceiling pipe 7 communicated with the inner coil pipe 5 are arranged between the front fire-resistant wall 3 and the rear fire-resistant wall 4, the end part of the ceiling pipe 7 is abutted against the rear fire-resistant wall, and the end part of the inner coil pipe 5 is connected with the front fire-resistant wall 3, so that the fixing and the installation are convenient.

The outer ring of the inner coil 3 is provided with an outer coil 8; one end of the inner coil 3 is connected with the biomass burner 2, a first flue gas channel 9 is arranged between the inner coil 3 and the outer coil 8, and a second flue gas channel 10 is arranged between the outer coil 8 and the inner wall of the boiler body 1; the flue gas after the combustion of the biomass burner 2 enters the inner part of the inner coil 3, passes through the first flue gas channel 9 and then passes through the second flue gas channel 10 and then is discharged through the flue gas outlet 12 of the boiler body 1.

Furthermore, the inner side of the inner coil 3, the first flue gas channel 9 and the second flue gas channel 10 form an S-shaped channel, the total path of the flue gas channels is increased, and the utilization rate of high-temperature flue gas is improved.

Further, the outlet end of the flue gas outlet 12 is connected with a normal pressure economizer 13. The normal pressure economizer 13 comprises an economizer 131 and a normal pressure water tank 132 which are communicated with each other; the economizer 131 is provided with a water inlet 1311 and a water outlet 1312, the economizer 131 is communicated with the normal-pressure water tank 132, and the water inlet 1311 and the water outlet 1312 are both communicated with the normal-pressure water tank 132.

When the biomass burner is used, fuel is mixed with air in the biomass burner 2 and then is ignited by the electronic ignition rod, the mixture is sprayed into the inner coil pipe 13 to be burnt, high-temperature flue gas passes through the inner coil pipe 13, the ceiling pipe 14 and the rear fire-resistant wall 15, then enters the first flue gas channel 9, then enters the second flue gas channel 10, and enters the normal-pressure energy saver 13 through the flue gas outlet 12, and finally the flue gas is discharged into the atmosphere after passing through equipment such as dust removal equipment; meanwhile, the water inlet 1311 and the water outlet 1312 are arranged on the energy saver 131, the energy saver 131 is communicated with the normal-pressure water tank 132, the water temperature in the energy saver 131 is kept at a low water temperature continuously, therefore, water in the normal-pressure water tank 132 can cool flue gas passing through the energy saver 131 continuously, heat carried in the flue gas is fully utilized, heated water in the normal-pressure water tank 132 can be pumped into the boiler through a boiler water pump, the water temperature in the boiler rises faster, the heat efficiency is higher, and the heat carried in the flue gas is better in utilization effect.

Further, an energy-saving tube bundle is arranged in the energy saver 131; energy-conserving tube bank comprises a plurality of economizer, and equipment such as the dust removal of energy-saving appliance 131 and afterbody are connected through connecting the chimney, and simultaneously when using, energy-conserving tube bank makes the area of contact with water bigger, and is consequently better to the cooling effect of flue gas, can make full use of the heat in the flue gas for it is better to thermal utilization effect.

Further, the normal pressure water tank 132 is communicated with the inner cavity of the boiler body 1; therefore, the temperature of the water in the boiler body 1 rises faster, and the working efficiency is higher.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and the skilled in the art can carry out the common changes and replacements within the technical solution of the present invention.

Claims

1. The utility model provides a can effectively utilize thermal condensation integral type boiler of flue gas, includes boiler body and biomass burner, its characterized in that: a front fire-resistant wall is arranged at one end in the boiler body, and a rear fire-resistant wall is arranged at the other end opposite to the front fire-resistant wall;

an outer coil pipe is arranged on the outer ring of the inner coil pipe;

2. The condensation integrated boiler capable of effectively utilizing heat of flue gas according to claim 1, wherein:

the inner side of the inner coil pipe, the first smoke channel and the second smoke channel form an S-shaped channel.

3. The condensation integrated boiler capable of effectively utilizing heat of flue gas according to claim 1, wherein:

and the outlet end of the flue gas outlet is connected with a normal-pressure energy saver.

4. A condensing integrated boiler capable of effectively utilizing heat of flue gas according to claim 3, wherein: the normal-pressure energy saver comprises an energy saver and a normal-pressure water tank which are communicated; the energy saver is provided with a water inlet and a water outlet and is communicated with the normal-pressure water tank.

5. The condensation integrated boiler capable of effectively utilizing heat of flue gas according to claim 4, wherein: the energy saver is internally provided with a plurality of energy-saving tube bundles.

6. The condensation integrated boiler capable of effectively utilizing heat of flue gas according to claim 5, wherein: the energy-saving tube bundle consists of a plurality of energy-saving tubes.

7. The condensation integrated boiler capable of effectively utilizing heat of flue gas according to claim 4, wherein: the water inlet and the water outlet are both communicated with a normal-pressure water tank.