CN211261252U

CN211261252U - Novel biomass boiler

Info

Publication number: CN211261252U
Application number: CN201921272006.9U
Authority: CN
Inventors: 杨国忠; 苏国旗; 张平; 张翠晶; 张衣
Original assignee: Harbin Dongtai Environmental Protection Boiler Co ltd
Current assignee: Harbin Dongtai Environmental Protection Boiler Co ltd
Priority date: 2019-08-07
Filing date: 2019-08-07
Publication date: 2020-08-14
Anticipated expiration: 2029-08-07

Abstract

The utility model provides a novel biomass boiler, including pot shell, grate, furnace, combustion chamber, both ends are equipped with preceding smoke box and back smoke box respectively about the pot shell, have seted up the delivery port on the pot shell top, the inside screw thread tobacco pipe that is equipped with of pot shell, the left lower extreme of pot shell is equipped with the front arch, the utility model discloses simple structure, convenient to use sets up the heat accumulation wall at the rear portion of combustion chamber, and it can make the carbon ion that does not obtain the burn up in furnace and contain the tar of the living beings in the flue gas when passing through the heat accumulation wall, obtains the burn up under the high temperature effect.

Description

Novel biomass boiler

Technical Field

The utility model relates to a boiler equipment technical field especially relates to a novel biomass boiler.

Background

In recent years, the phenomenon of air pollution is more and more emphasized by governments at all levels and environmental protection organizations, and the index of PM2.5 is difficult to embody the air quality, so that the national governments and local governments issue policies to control the use of high-pollution fuels and advocate the use of clean and renewable energy sources such as natural gas, solar energy, wind energy and the like. The biomass briquette fuel is accepted as clean energy in the world, is more and more favored by heat utilization units, not only can solve the problem of environmental pollution, but also belongs to renewable energy, has the advantages of low sulfur content, low nitrogen oxide emission during combustion and zero carbon dioxide emission, and is one of effective ways for replacing petrochemical energy and optimizing an energy structure, so that the development and popularization of the biomass briquette fuel can generate remarkable energy-saving, environmental-friendly and social benefits.

However, the existing biomass fuel boiler in the current market has simple structure, the operation is complex, the safety of the boiler cannot be guaranteed, carbon ions which are not burnt out in a hearth and tar of biomass contained in smoke cannot be burnt out under the action of high temperature, the combustion efficiency is low, and the fuel consumption is high.

The utility model aims at providing a novel biomass boiler is in order to solve the problem of mentioning among the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a realize through following technical scheme: a novel biomass boiler comprises a boiler shell, a fire grate, a hearth and a combustion chamber, wherein a front smoke box and a rear smoke box are respectively arranged at the left end and the right end of the boiler shell, a water outlet is formed in the top end of the boiler shell, a threaded smoke pipe is arranged in the boiler shell, a front arch is arranged at the left lower end of the boiler shell, a secondary air pipe is arranged at the upper end of the front arch, a coal hopper is arranged at the left end of the front arch, a fire grate is arranged at the lower end of the coal hopper, a lateral lower collecting box is arranged at the upper end of the fire grate, a rear arch and the hearth are arranged at the upper end of the lateral lower collecting box, a left water cooling pipe and a right water cooling pipe are arranged on the hearth, the combustion chamber right end is provided with the combustion chamber, a down pipe is arranged at the right end of the combustion chamber, a return water communicating device is arranged at the right end of the down pipe, a front seal head cooling, the boiler shell is internally communicated with a threaded smoke pipe, the top end of the outside of the boiler shell is communicated with a water outlet, the bottom end of the outside of the boiler shell is respectively communicated with a hearth and a combustion chamber, the combustion chamber is communicated with a backwater communicating device through a descending pipe, and the backwater communicating device is communicated with a front end enclosure cooling device through a water inlet.

And a heat storage wall is arranged at the rear part of the combustion chamber.

The circulating water quantity is increased by utilizing the injection effect of the return water, the wall temperature of the water-cooled wall is ensured to be within an allowable range, and meanwhile, part of water quantity in the return water is used for cooling the high-temperature front tube plate.

The front arch adopts a 45-degree angle.

Has the advantages that: the utility model discloses simple structure, convenient to use sets up the heat accumulation wall at the rear portion of combustion chamber, and it can make the carbon ion that does not obtain the burn-out in furnace and the tar that contains the living beings in the flue gas obtain the burn-out under the high temperature effect when passing through the heat accumulation wall. The combustion efficiency is improved, the fuel consumption is further reduced, the circulating water quantity is increased by utilizing the injection effect of the return water, the wall temperature of the water-cooled wall is ensured to be within an allowable range, meanwhile, part of water quantity in the return water is used for cooling the front tube plate at high temperature, the tube plate is not cracked due to high temperature, and the safety and reliability of the boiler are fully ensured.

Drawings

Fig. 1 is a schematic view of the overall structure of the novel biomass boiler of the present invention.

Fig. 2 is a schematic structural diagram of the combustion chamber of the novel biomass boiler of the utility model.

The boiler comprises a boiler shell 1, a grate 2, a coal hopper 3, a combustion chamber 4, a front arch 5, a rear arch 6, a hearth 7, a left water-cooling pipe, a right water-cooling pipe 8, a front smoke box 9, a rear smoke box 10, a threaded smoke pipe 11, a water outlet 12, a side lower collection box 13, a downcomer 14, a front end enclosure cooling device 15, a water inlet 16, a backwater communicating device 17, a secondary air pipe 19 and a heat storage wall 20.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

Referring to fig. 1, a novel biomass boiler comprises a boiler shell 1, a fire grate 2, a hearth 7 and a combustion chamber 4, wherein a front smoke box 9 and a rear smoke box 10 are respectively arranged at the left end and the right end of the boiler shell 1, a water outlet 12 is arranged at the top end of the boiler shell 1, a threaded smoke pipe 11 is arranged inside the boiler shell 1, a front arch 5 is arranged at the left lower end of the boiler shell 1, a secondary air pipe 19 is arranged at the upper end of the front arch 5, a coal hopper 3 is arranged at the left end of the front arch 5, a fire grate 2 is arranged at the lower end of the coal hopper 3, a side lower header 13 is arranged at the upper end of the fire grate 2, a rear arch 6 and the hearth 7 are arranged at the upper end of the side lower header 13, a left water cooling pipe 8 and a right water cooling pipe 8 are arranged on the hearth 7, the combustion chamber 4 is arranged at the right end of the combustion chamber 4, a water return pipe communication device 17 is arranged at the right, the boiler comprises a hearth 7, a front arch 5, a rear arch 6, a left water-cooling pipe 8, a right water-cooling pipe 8, a front smoke box 9, a rear smoke box 10, a threaded smoke pipe 11, a water outlet 12, a hearth 7 and a combustion chamber 4, wherein the front smoke box is communicated with the rear smoke box 10 through a boiler shell 1, the interior of the boiler shell 1 is communicated with the threaded smoke pipe 11, the top end of the exterior of the boiler shell 1 is communicated with the water outlet 12, the bottom end of the exterior of the boiler shell 1 is communicated with the hearth 7 and the combustion chamber 4, the combustion chamber 4 is communicated with a.

The rear part of the combustion chamber 4 is provided with a heat storage wall 20 which can enable carbon ions which are not burnt out in the hearth and tar of biomass contained in the smoke to be burnt out under the action of high temperature when passing through the heat storage wall. The combustion efficiency is improved, and the fuel consumption is further reduced.

The circulating water quantity is increased by utilizing the injection effect of the return water, the wall temperature of the water-cooled wall is ensured to be within an allowable range, meanwhile, part of water quantity in the return water is used for cooling the front tube plate at high temperature, so that the tube plate is not cracked due to high temperature, and the safety and reliability of the boiler are fully ensured.

The furnace can be used for burning coal or burning the coal and the biomass fuel in a mixed manner when the biomass fuel is not supplied enough, so that the furnace is designed to be compatible with the front arch and the rear arch. The height of the raised rear arch is used for adapting to the biomass fuel; the rear arch 6 is extended forwards to adapt to the coal burning consideration, and the front arch 5 adopts a 45-degree angle to adapt to the coal requirement.

The working principle is as follows:

biomass particles enter from a coal hopper 3 and are combusted on a fire grate 2, the heat of flue gas obtained by combustion is firstly absorbed by a hearth 7 through a front arch 5, a rear arch 6, a left water-cooling pipe and a right water-cooling pipe 8, the flue gas sequentially passes through a transverse channel, the heat is sequentially absorbed by the left water-cooling pipe and the right water-cooling pipe 8, the temperature of the flue gas is reduced to about 160 ℃ through a front smoke box 9, a threaded smoke pipe 11 and a rear smoke box 10, and then the flue gas is discharged out of the furnace.

The water circulation flow of the boiler is as follows:

the feed water is fed into the lower side header 13 through the return water communication device 17, then fed into the boiler shell 1 through the left and right water-cooling pipes 8, exchanges heat with the threaded smoke pipe 11, and then hot water with qualified parameters is fed out through the water outlet 12. The unqualified water enters the side lower header 13 through the downcomer 14 and then continues to participate in water circulation.

Claims

1. A novel biomass boiler is characterized by comprising a boiler shell, a fire grate, a hearth and a combustion chamber, wherein a front smoke box and a rear smoke box are respectively arranged at the left end and the right end of the boiler shell, a water outlet is formed in the top end of the boiler shell, a threaded smoke pipe is arranged inside the boiler shell, a front arch is arranged at the left end and the right end of the boiler shell, a secondary air pipe is arranged at the upper end of the front arch, a coal hopper is arranged at the left end, a fire grate is arranged at the lower end of the coal hopper, a lateral lower collecting box is arranged at the upper end of the fire grate, a rear arch and a hearth are arranged at the upper end of the lateral lower collecting box, a left water cooling pipe and a right water cooling pipe are arranged on the hearth, the right end of the combustion chamber is provided with a down pipe, a return water communicating device is arranged at the right end of the down pipe, a front seal head cooling device is arranged on the return water communicating device, the coal, the boiler shell is internally communicated with a threaded smoke pipe, the top end of the outside of the boiler shell is communicated with a water outlet, the bottom end of the outside of the boiler shell is respectively communicated with a hearth and a combustion chamber, the combustion chamber is communicated with a backwater communicating device through a descending pipe, and the backwater communicating device is communicated with a front end enclosure cooling device through a water inlet.

2. The novel biomass boiler according to claim 1, characterized in that: and a heat storage wall is arranged at the rear part of the combustion chamber.

3. The novel biomass boiler according to claim 1, characterized in that: the circulating water quantity is increased by utilizing the injection effect of the return water, the wall temperature of the water-cooled wall is ensured to be within an allowable range, and meanwhile, part of water quantity in the return water is used for cooling the high-temperature front tube plate.

4. The novel biomass boiler according to claim 1, characterized in that: the front arch adopts a 45-degree angle.