CN111023559B

CN111023559B - Upper-hanging lower-supporting type combustible material sectional combustion furnace

Info

Publication number: CN111023559B
Application number: CN201911077117.9A
Authority: CN
Inventors: 温锋涛; 温社弟
Original assignee: Xi'an Tianwaitian Boiler Co ltd
Current assignee: Xi'an Tianwaitian Boiler Co ltd
Priority date: 2019-11-06
Filing date: 2019-11-06
Publication date: 2021-10-08
Anticipated expiration: 2039-11-06
Also published as: CN111023559A

Abstract

The invention discloses an up-hanging and down-supporting type combustible material segmented combustion furnace, which comprises a chimney, a furnace cover, a furnace body shell and a furnace base which are sequentially arranged from top to bottom, wherein a discharge port communicated with the chimney is formed in the furnace cover, a plurality of furnace fuel placing cages are hung or held down or hung and held down in the furnace body shell at the same time, the discharge port is close to the central positions of the plurality of furnace fuel placing cages and is bounded by the positions of the chimney, an airless chamber and an air chamber are respectively arranged below the furnace fuel placing cages, a wind baffle is arranged between the airless chamber and the air chamber, an air inlet door is arranged at the position, corresponding to the air chamber, of the bottom of the furnace body shell, and the airless chamber is positioned at the same side of the central positions of the furnace fuel placing cages with the discharge port. The invention respectively burns and settles the smoke dust to be discharged, thereby effectively reducing the discharge of smoke dust, sulfur dioxide and nitrogen oxide after the fuel is burnt.

Description

Upper-hanging lower-supporting type combustible material sectional combustion furnace

Technical Field

The invention belongs to the technical field of combustion equipment, and relates to an upper-hanging lower-supporting type combustible sectional combustion furnace.

Background

At present, in order to reasonably regulate and control the utilization rate of resources and realize the continuous utilization of the resources, the nation advocates vigorously to use biomass renewable resources as fuels, and a plurality of enterprises select biomass briquette boilers. Considering that the combustion of fuel can generate a large amount of smoke dust, the large, medium and small biomass briquette fuel boilers are additionally provided with high-efficiency dust collectors. However, the large, medium and small biomass briquette boilers have high cost and specific limitation on the types of fuels, and small stoves used by individuals or families do not have dust collectors or treat a large amount of smoke dust after combustion, so that the smoke dust is directly discharged into the air, and the environment is polluted.

Disclosure of Invention

The invention aims to provide an up-hanging and down-supporting type combustible segmented combustion furnace, which is used for respectively burning and settling smoke dust to be discharged, and effectively reducing the discharge of smoke dust, sulfur dioxide and nitrogen oxide after fuel combustion.

The invention adopts the technical scheme that the upper-hanging and lower-supporting type combustible material segmented combustion furnace comprises a chimney, a furnace cover, a furnace body shell and a furnace base which are sequentially arranged from top to bottom, wherein a discharge port communicated with the chimney is formed in the furnace cover, a plurality of furnace fuel placing cages are hung or supported in the furnace body shell or hung and supported simultaneously, the discharge port is close to the central positions of the plurality of furnace fuel placing cages and is bounded by the positions of the chimneys, an airless chamber and an air chamber are respectively arranged below the furnace fuel placing cages, a wind shield is arranged between the airless chamber and the air chamber, an air inlet door is arranged at the position, corresponding to the air chamber, of the bottom of the furnace body shell, and the airless chamber is positioned at the same side of the discharge port at the central position of the furnace fuel placing cages.

The present invention is also characterized in that,

the furnace body shell is internally and vertically provided with a hanging rail a or a lower bracket with a rail b or a lower bracket with a hanging rail a or a lower bracket with a rail b along the length direction, the bottom of the furnace fuel placing cage is matched with the rail b in shape, and the upper part of the furnace fuel placing cage is provided with a hanging lug matched with the rail a.

The furnace body shell is movably provided with a furnace cage fork, the furnace cage fork body is positioned in the furnace body shell, the furnace cage fork handle is positioned outside the furnace body shell, and the furnace cage fork can push the fuel in the furnace to move along the track a and the track b.

The air chamber is provided with a fire poking mechanism.

The fire poking mechanism comprises a fire poking fork, a pedal plate is arranged outside the furnace body shell, and the pedal plate and the fire poking fork form a lever structure so that the fire poking fork can be forked into the bottom of the fuel containing cage in the furnace.

A cylindrical water jacket with openings at the upper end and the lower end is arranged between the furnace cover and the chimney, the chimney and the furnace cover are respectively connected with the upper end and the lower end of the water jacket, a plurality of convection tube bundles connected with the water jacket are arranged in the water jacket, a water outlet and an air vent are respectively arranged on the water jacket, a water return port is arranged at the bottom of the furnace body shell, a sewage discharge port is arranged at the bottom of the water return port, and the water return port is communicated with the water jacket through a pipeline.

The two ends of the furnace body shell in the length direction are respectively provided with a front furnace door and a rear furnace door.

The chimney is internally provided with a smoke baffle, the area and the shape of the smoke baffle are adapted to the cross section of the chimney, and the smoke baffle rotates to open and close in the chimney by taking a straight line with a diameter as a rotating shaft.

The outer surface of the furnace body shell is provided with a heat preservation layer.

The number of the fuel placing cages in the furnace is seven.

The invention has the beneficial effects that:

1) the invention relates to an up-hanging and down-supporting type combustible segmented combustion furnace which is suitable for various scattered fuels, the scattered fuels are loaded into a furnace fuel placing cage to realize the in-furnace shaped combustion of the fuels, and a plurality of furnace fuel placing cages are sequentially combusted in a hearth;

2) in the process of sequentially burning the fuels in the plurality of furnace fuel containing cages of the upper-hanging lower-supporting type combustible material segmented burning furnace, unburned fuels can be fully dried, dry distilled, oxidized and reduced, when high-temperature flue gas generated by later burning flows into the front, the high-temperature flue gas and combustible gas (namely black smoke) separated out in the drying and dry distillation are inevitably mixed and instantly ignited, so that the environment-friendly and energy-saving effect of smokeless burning of the smoke fuels is realized, and larger-particle dust of the high-temperature flue gas and the combustible gas can be settled in the flowing process of the high-temperature flue gas and the combustible gas in a hearth, thereby reducing the emission of the dust;

3) the invention relates to a furnace fuel placing cage of an upper-hanging and lower-supporting type combustible segmented combustion furnace, which is hung in the air, and overcomes the defects that the traditional grate type combustion only supplies air under the fuel, the combustion is ignited from bottom to top, and the combustion area is limited;

in conclusion, the upper-hanging and lower-supporting type combustible segmented combustion furnace is low in cost and convenient to use; the applicability of the fuel is wide; the smoke dust emission after combustion can be greatly reduced; the environment is protected and safe; has extremely high social value.

Drawings

FIG. 1 is a schematic structural view of a combustible sectional burner with upper and lower supports according to the invention;

FIG. 2 is another angle structure diagram of the combustible sectional burner with upper hanging and lower supporting.

In the figure, 1, a chimney, 2, a furnace cover, 3, a water jacket, 4, a furnace body shell, 5, a front furnace door, 6, a furnace base, 7, a wind shield, 8, a fire poking mechanism, 9, an air chamber, 10, a furnace cage fork, 11, a rear furnace door, 12, a furnace cover, 13, a discharge port, 14, a water outlet, 15, a convection tube bundle, 16, rails a and 17, a furnace fuel placing cage, 18, an air inlet door, 19, a sewage outlet, 20, a water return port, 21, a heat insulation layer, 22, a vent and 23, a hanging lug are arranged.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

The invention relates to an up-hanging and down-supporting type combustible material segmented combustion furnace, as shown in figure 1-2, comprising a chimney 1, a furnace cover 12, a furnace body shell 4 and a furnace base 6 which are sequentially arranged from top to bottom, wherein a smoke baffle 2 is arranged in the chimney 1, the area and the shape of the smoke baffle 2 are adapted to the cross section of the chimney, the smoke baffle 2 rotates by taking a straight line with a diameter as a rotating shaft and is opened and closed in the chimney 1, the furnace cover 12 is a water jacket type panel, the outer surface of the furnace body shell 4 is provided with a heat insulation layer 21, the two ends of the furnace body shell 4 in the length direction are respectively provided with a front furnace door 5 and a rear furnace door 11, the furnace cover 12 is provided with a discharge port 13 communicated with the chimney 1, a plurality of furnace fuel placing cages 17 are hung or held down or hung down simultaneously in the furnace body shell 4, generally seven furnace fuel placing cages 17 are arranged, the discharge port 13 is close to the central positions of the plurality of the furnace fuel placing cages 17, and the position of the chimney 1 is used as a boundary, an airless chamber and an air chamber 9 are respectively arranged below the fuel placing cage 17 in the furnace, a wind shield 7 is arranged between the airless chamber and the air chamber 9, two air inlet doors 18 are arranged at the corresponding positions of the bottom of the furnace body shell 4 and the air chamber 9, a fire poking mechanism 8 is arranged in the air chamber 9, and the airless chamber is positioned at the same side of the central position of the fuel placing cage 17 in the furnace with the discharge port 13.

The furnace body shell 4 is internally and vertically provided with a hanging rail a or a lower bracket with a rail b or a lower bracket with a hanging rail a or a lower bracket with a rail b along the length direction, the bottom shape of the furnace fuel placing cage 17 is matched with the rail b, and the upper part of the furnace fuel placing cage 17 is provided with a hanging lug 23 matched with the rail a 16.

The furnace body shell 4 is movably provided with a furnace cage fork 10, the fork body of the furnace cage fork 10 is positioned in the furnace body shell 4, a handle of the furnace cage fork 10 is positioned outside the furnace body shell 4, and the furnace cage fork 10 can push the fuel in the furnace to place the cage 17 to move along the track a16 and the track b.

The fire poking mechanism 8 comprises a fire poking fork, a pedal plate is arranged outside the furnace body shell 4, and the pedal plate and the fire poking fork form a lever structure so that the fire poking fork can be forked into the bottom of the fuel containing cage 17 in the furnace.

A cylindrical water jacket 3 with openings at the upper end and the lower end is arranged between the furnace cover 12 and the chimney 1, the chimney 1 and the furnace cover 12 are respectively connected with the upper end and the lower end of the water jacket, a plurality of convection tube bundles 15 connected with the water jacket 3 are arranged in the water jacket 3, a water outlet 14 and a vent 22 are respectively arranged on the water jacket 3, a water return port 20 is arranged on the bottom of the furnace body shell 4, a sewage discharge port 19 is arranged at the bottom of the water return port 20, and the water return port 20 is communicated with the water jacket 3 through a pipeline.

The invention relates to an upper-hanging and lower-supporting type combustible segmented combustion furnace, which mainly comprises the following components:

the in-furnace fuel containing cage 17 is used for containing scattered fuel, so that the scattered fuel can be formed and combusted in the combustion furnace.

The rail a16 and the rail b enable the fuel placing cage 17 in the furnace to be hung in the hearth, the contact area of the fuel and air is increased, the burnout rate is improved, and dust is effectively reduced.

The wind shield 7 divides the bottom space of the hearth into an air chamber 9 and an air-free chamber, fuel in the furnace fuel placing cage 17 above the air-free chamber is not combusted, air supply is not needed, fuel drying, dry distillation and the like are facilitated, most of the fuel in the furnace fuel placing cage 17 above the air chamber 9 is combusted, and air flow is enhanced by the air chamber 9 to help combustion.

The cage forks 10 can push the in-furnace fuel-retaining cages 17 forward one by one, in a sequential order.

The fire poking mechanism 8 is after stepping on the running-board, and the fire poking fork upwards forks into the bottom of the in-furnace fuel placing cage 17, and the ash residue that burns at the bottom of the in-furnace fuel placing cage 17 is dredged and falls down, and the phenomenon that the ash residue blocks up the hole at the bottom of the in-furnace fuel placing cage 17, which leads to the insufficient combustion of the fuel is avoided.

The water jacket 3 and the convection bank 15 are used for heat exchange, the temperature of flue gas discharged from a discharge port in the hearth is reduced, the damage to the chimney 1 caused by overhigh temperature of the flue gas is avoided, and meanwhile, sufficient heat recovery and utilization can be carried out.

The water return port 20 and the water outlet 14 are both connected with a heating system or other circulating heat exchange systems to form water circulation, cold water enters from the water return port 20, the temperature of water flow is increased after the cold water flows through the water jacket 3 and the convection tube bundle 15 and becomes hot water, the hot water is discharged from the water outlet 14, and the sewage discharge port 19 is used for discharging impurities and dirt in the circulating water from the bottom of the water return port 20.

The smoke baffle 2 rotates to open and close in the chimney 1 by taking a straight line with a diameter as a rotating shaft, and the emission of the emissions is controlled by controlling the opening and closing angle.

The heat-insulating layer 21 plays a role in heat insulation for the hearth.

The invention relates to a combustion process of an up-hanging and down-supporting type combustible segmented combustion furnace, which comprises the following steps:

opening a rear furnace door 11, placing a furnace fuel placing cage 17 into a furnace chamber, using a furnace cage fork 10 to move the furnace fuel placing cage 17 forward to the position of the furnace fuel placing cage 17, then placing a second furnace fuel placing cage … … and a third furnace fuel placing cage … … in sequence, igniting the fuel in the two furnace fuel placing cages 17 placed at last, closing the rear furnace door 11, opening an air inlet door 18, and starting the heat exchange cycle of water in the water jacket 3 and the convection bank 15.

In the fuel combustion process, the burning fuel produces the high temperature flue gas, the burning fuel toasts unburned fuel and produces black cigarette, black cigarette is the combustible gas that dry distillation separated out, high temperature flue gas and black cigarette all flow to discharge port 13, when high temperature flue gas and black cigarette contact mix, black cigarette is ignited in the twinkling of an eye, the direct emission of black cigarette has been avoided, obtain the mixed flue gas of burning, the mixed flue gas of burning is discharged by chimney 1 through hindering cigarette board 2 after the cooling of water jacket 3 and convection bank 15, substance concentration such as particulate matter, sulfur dioxide, nitrogen oxide in the flue gas that discharges all accords with and is far below discharge standard.

Claims

1. An upper-hanging and lower-supporting combustible material sectional combustion furnace comprises a chimney (1), a furnace cover (12), a furnace body shell (4) and a furnace base (6) which are arranged from top to bottom in sequence, the furnace cover (12) is provided with a discharge port (13) communicated with the chimney (1), it is characterized in that a plurality of in-furnace fuel placing cages (17) are hung or supported in the furnace body shell (4) or hung and supported at the same time, the discharge port (13) is close to the central position of a plurality of furnace fuel placing cages (17), and the position of the chimney (1) is used as a boundary, an airless chamber and an air chamber (9) are respectively arranged below the fuel placing cage (17) in the furnace, a wind shield (7) is arranged between the airless chamber and the air chamber (9), an air inlet door (18) is arranged at the corresponding position of the bottom of the furnace body shell (4) and the air chamber (9), the non-air chamber is positioned on the same side of the discharge port (13) at the central position of the fuel placing cage (17) in the furnace;

a cylindrical water jacket (3) with openings at the upper end and the lower end is arranged between the furnace cover (12) and the chimney (1), the chimney (1) and the furnace cover (12) are respectively connected with the upper end and the lower end of the water jacket, a plurality of convection tube bundles (15) connected with the water jacket are arranged in the water jacket (3), a water outlet (14) and a vent (22) are respectively arranged on the water jacket (3), a water return port (20) is formed in the bottom of the furnace body shell (4), a sewage discharge port (19) is formed in the bottom of the water return port (20), the water return port (20) is communicated with the water jacket (3) through a pipeline, and a front furnace door (5) and a rear furnace door (11) are respectively arranged at two ends of the furnace body shell (4) in the length direction;

the chimney is characterized in that a smoke blocking plate (2) is arranged in the chimney (1), the area and the shape of the smoke blocking plate (2) are matched with the cross section of the chimney (1), and the smoke blocking plate (1) rotates to open and close in the chimney (1) by taking a straight line where a diameter is located as a rotating shaft.

2. The upper-hanging and lower-supporting type combustible material subsection combustion furnace as claimed in claim 1, wherein a hanging rail a (16) or a lower bracket with a rail b or both are correspondingly arranged in the furnace body shell (4) along the length direction thereof from top to bottom, the shape of the bottom of the furnace fuel placing cage (17) is matched with that of the rail b, and a hanging lug (23) matched with the rail a (16) is arranged at the upper part of the furnace fuel placing cage (17).

3. The upper-hanging and lower-supporting type combustible material subsection combustion furnace as claimed in claim 2, wherein the furnace body shell (4) is movably provided with a furnace cage fork (10), the fork body of the furnace cage fork (10) is positioned in the furnace body shell (4), the handle of the furnace cage fork (10) is positioned outside the furnace body shell (4), and the furnace fuel placing cage (17) can be pushed to move along the track a (16) and the track b by drawing the furnace cage fork (10).

4. A furnace as claimed in claim 1, wherein the plenum (9) is provided with a fire striking mechanism (8).

5. A top-hung and bottom-hung type combustible material staged combustion furnace as claimed in claim 4, wherein the fire poking mechanism (8) comprises a fire poking fork, a foot pedal is arranged outside the furnace body shell (4), and the foot pedal and the fire poking fork form a lever structure so that the fire poking fork can be forked into the bottom of the fuel placing cage (17) in the furnace.

6. A top-hung and bottom-hung sectional combustible burner as claimed in claim 1, wherein the outer surface of the burner body housing (4) is provided with an insulating layer (21).

7. A furnace as claimed in claim 1 wherein the number of fuel receiving cages (17) is seven.