CN110793021A

CN110793021A - Biomass combustion furnace

Info

Publication number: CN110793021A
Application number: CN201911268648.6A
Authority: CN
Inventors: 杨西建; 苏国平
Original assignee: Henan Yueer Environmental Protection Technology Co Ltd
Current assignee: Henan Yueer Environmental Protection Technology Co Ltd
Priority date: 2019-12-11
Filing date: 2019-12-11
Publication date: 2020-02-14

Abstract

The invention discloses a biomass combustion furnace, which comprises a furnace body, wherein the left side of the upper surface of the furnace body is connected with a feed hopper, the middle part of the upper surface of the furnace body is provided with a motor B, the lower part of the furnace body is provided with a motor A, output shafts of the motor A and the motor B are respectively connected with a stirring shaft A and a stirring shaft B, the stirring shaft A and the stirring shaft B are both connected with stirring blades, the middle part of the inner side wall of the furnace body is connected with a high-temperature zone, the upper part and the lower part of, the stirring blades and the lower surface of the high-temperature zone are connected with a stirring device, the outer side of the stirring shaft A is connected with a discharging tower through a bearing, the outer side of the lower part of the furnace body is sleeved with a cooling sleeve, the lower part of the right side of the cooling sleeve is connected with a liquid inlet pipe, the upper part of the left side of the cooling sleeve is connected with the inlet end of a steam drum through a liquid outlet pipe, the outlet end of the steam drum is connected with the stirring shaft A through a steam pipe; the invention has the advantages of slowing down the blanking speed, fully burning the fuel, avoiding wall sticking and having high discharging efficiency.

Description

Biomass combustion furnace

Technical Field

The invention belongs to the technical field of combustion equipment, and particularly relates to a biomass combustion furnace.

Background

The biomass combustion furnace burns agricultural wastes to convert the agricultural wastes into biochar, changes waste into valuable, effectively reduces the accumulation of the agricultural wastes and the pollution to the environment, has high blanking speed, uses a long stirring shaft for stirring, needs to be made of special heat-resistant steel, has strict preparation process requirements, high cost, can not fully burn biomass fuel, is easy to cause wall sticking in the combustion process, has low discharging efficiency, directly discharges high-temperature harmful tail gas into the environment, pollutes the environment and can not meet the production requirements; therefore, the biomass combustion furnace which is low in cost, capable of slowing down the blanking speed, capable of fully combusting biomass fuel, capable of avoiding the wall sticking phenomenon, high in discharging efficiency, capable of effectively utilizing the waste heat in tail gas, capable of discharging the tail gas to the environment after being treated, capable of reducing the pollution of the tail gas to the environment, energy-saving and environment-friendly and capable of meeting the production requirements is urgently needed to be designed.

Disclosure of Invention

The biomass combustion furnace has the advantages of low cost, reduced blanking speed, sectional stirring of biomass fuel, full combustion of the biomass fuel, wall sticking prevention, cooling treatment of the furnace body, cyclic utilization of water resources, high discharging efficiency, effective utilization of waste heat in tail gas, emission of the treated tail gas to the environment, reduction of pollution of the tail gas to the environment, energy conservation, environmental protection and capability of meeting production requirements.

The purpose of the invention is realized as follows: a biomass combustion furnace comprises a furnace body, wherein supporting legs are fixedly connected to the lower surface of the furnace body, a feed hopper is fixedly connected to the left side of the upper surface of the furnace body, a motor B is fixedly mounted in the middle of the upper surface of the furnace body, an output shaft of the motor B is connected with a stirring shaft B, the lower end of the stirring shaft B penetrates through the upper side wall of the furnace body and extends into the upper portion of the furnace body, a motor A is arranged below the furnace body, an output shaft of the motor A is connected with a stirring shaft A, the upper end of the stirring shaft A penetrates through the lower side wall of the furnace body and extends into the lower portion of the furnace body, stirring blades are fixedly connected to the stirring shaft A and the stirring shaft B, a high-temperature belt is fixedly connected to the middle of the inner side wall of the furnace body, guide plates are fixedly connected to the upper portion of the, The stirring blades and the lower surface of the high-temperature zone are both connected with a material stirring device, the outer side of the stirring shaft A is connected with a discharging tower through a bearing, the lower end of the discharging tower is fixedly connected with the inner wall of the lower side of the furnace body, the outer side of the lower part of the furnace body is sleeved with a cooling sleeve, the lower part of the right side of the cooling sleeve is fixedly connected with a liquid inlet pipe, the upper part of the left side of the cooling sleeve is fixedly connected with a liquid outlet pipe, the other end of the liquid outlet pipe is connected with the inlet end of the steam pocket, the outlet end of the steam pocket is connected with a steam pipe, the other end of the steam pipe is connected with the stirring shaft A, the lower parts of the left side and the right side of the furnace body are symmetrically connected with air outlet pipes, the gas outlet pipe is provided with a gas outlet valve, the other end of the gas outlet pipe is connected with a heat exchanger, the heat exchanger is connected with a tail gas processor through a connecting pipe, the tail gas treater upper surface be provided with the gas vent, furnace body lower surface left side and lower surface right side equal fixedly connected with discharging pipe.

The steam pipe is a telescopic hose.

The material guide plate and the stirring blades are of conical structures.

The material shifting device comprises a chain ring, a connecting rod is fixedly connected to the upper end of the chain ring, the upper end of the connecting rod is fixedly connected to the lower surfaces of the material guide plate, the stirring blades and the high-temperature zone, and a material shifting plate is hung in the chain ring.

The stirring shaft A is a hollow sleeve, the stirring shaft A comprises an inner pipe, a middle-layer sleeve is sleeved on the outer side of the inner pipe, an outer-layer sleeve is sleeved on the outer side of the middle-layer sleeve, an opening is formed in the upper surface of the middle-layer sleeve, an air outlet is formed in the upper portion of the side wall of the inner pipe, an air outlet is formed in the side wall of the outer-layer sleeve, the outer-layer sleeve is connected with a discharging tower through a bearing, the lower end of the inner pipe is connected with an output shaft of a motor A, and one side of the inner pipe is connected with a.

The discharging tower is a stepped discharging tower, and the side wall of the discharging tower is provided with an air outlet.

The material guide plate, the stirring blades and the high-temperature belt are all of seamless steel structures.

The heat exchanger is a waste heat boiler.

The invention has the following beneficial effects:

biomass fuel enters into the furnace body through the feeder hopper, the furnace body calcines biomass fuel, open motor A and motor B, motor A drives (mixing) shaft A rotatory, motor B drives (mixing) shaft B rotatory, (mixing) shaft A is located the furnace body lower part, (mixing) shaft B is located furnace body upper portion, stirring vane on (mixing) shaft A and the (mixing) shaft B carries out the segmentation stirring to biomass fuel, stirring effect is good, furnace body inner wall upper portion and lower part all are connected with the stock guide, the stock guide plays the guide effect, stock guide and stirring vane staggered distribution, biomass fuel is the broken line decline between stock guide and stirring vane, slow down unloading speed, be favorable to biomass fuel fully burns.

The middle part of the inner side wall of the furnace body is fixedly connected with a high-temperature zone, the lower surfaces of the material guide plate, the stirring blades and the high-temperature zone are all connected with a material stirring device, the material stirring device comprises a chain ring, the upper end of the chain ring is fixedly connected with a connecting rod, the upper end of the connecting rod is fixedly connected with the lower surfaces of the material guide plate, the stirring blades and the high-temperature zone, a material stirring plate is hung in the chain ring, and the material stirring plate can timely stir off fuel on the upper surfaces of the material guide plate, the stirring blades and the high-temperature zone so as to prevent the; and the guide plate, the stirring blades and the high-temperature belt are all of seamless steel structures, so that the production cost is reduced.

The outer side of the lower part of the furnace body is sleeved with a cooling sleeve, cooling water enters the cooling sleeve through a liquid inlet pipe, the cooling water cools the lower part of the furnace body, a steam-water mixture after heat exchange with the furnace body enters a steam drum through a liquid outlet pipe, the stirring shaft A is a hollow sleeve, the stirring shaft A comprises an inner pipe, a middle sleeve is sleeved on the outer side of the inner pipe, an outer sleeve is sleeved on the outer side of the middle sleeve, one side of the inner pipe is connected with a steam pipe, steam separated from the steam drum enters the inner pipe of the stirring shaft A through the steam pipe, the steam cools the inner pipe, the upper part of the side wall of the inner pipe is provided with a gas outlet hole, the steam enters the middle sleeve through the gas outlet hole on the upper part of the side wall of the inner pipe, the steam cools the middle sleeve, the upper surface of the middle sleeve is provided with, in vapor entered into furnace body and discharging tower through the venthole on the outer sleeve pipe lateral wall, be provided with the venthole on the lateral wall of discharging tower, vapor entered into the furnace body through the venthole on the discharging tower lateral wall, vapor played the effect of catalyst, was favorable to biomass fuel's abundant burning, and water resource cyclic utilization, reduction in production cost.

The steam pipe is a telescopic hose, the water vapor entering the inner pipe is not influenced when the stirring shaft A rotates, the motor A adjusts the stirring shaft A to rotate in the forward direction and the reverse direction, the water vapor can smoothly enter the inner pipe of the stirring shaft A, the rotating direction of fuel in the furnace body can be changed, the stirring effect is improved, and the fuel can be fully combusted; after the fuel is fully combusted, the fuel is discharged through the discharge pipe under the action of the discharging tower, and the discharging tower is stepped, so that discharging is facilitated, and discharging efficiency is improved.

Tail gas generated in the fuel combustion process is discharged through gas outlet pipes at the lower parts of the left side and the right side of a furnace body, the other ends of the gas outlet pipes are connected with heat exchangers, the heat exchangers are waste heat boilers, waste heat in the tail gas is effectively utilized by the heat exchangers, the heat exchangers are connected with tail gas processors through connecting pipes, the tail gas processors are existing industrial kiln tail gas processing equipment, the tail gas is purified, clean gas after purification is discharged into the environment through gas outlets, pollution of the tail gas to the environment is reduced, and the energy-saving and environment-friendly effects are; the gas outlet pipe, the heat exchanger and the tail gas processor form a set of tail gas utilization and treatment device, the two sets of tail gas utilization and treatment devices are symmetrically arranged on the left side and the right side of the furnace body, the gas outlet pipe is provided with the gas outlet valve, the two sets of tail gas utilization and treatment devices can be used by adopting a stop-and-stop method, the device can be maintained by alternative use without stopping for maintenance, and the production requirement can be met.

In summary, the invention has the advantages of low cost, slow down blanking speed, segmented stirring of biomass fuel, full combustion of biomass fuel, avoidance of wall sticking, cooling treatment of furnace body, cyclic utilization of water resource, high discharging efficiency, effective utilization of waste heat in tail gas, emission of treated tail gas to environment, reduction of pollution of tail gas to environment, energy saving, environmental protection and capability of meeting production requirements.

Drawings

FIG. 1 is a schematic structural view of a biomass combustion furnace according to the present invention.

Fig. 2 is an enlarged view of a point a in fig. 1.

FIG. 3 is a schematic structural view of a stirring shaft A in the biomass combustion furnace of the present invention.

In the figure: 1. the device comprises a discharge pipe 2, a stirring shaft A3, a motor A4, a discharge tower 5, support legs 6, an air outlet pipe 7, a heat exchanger 8, a liquid outlet pipe 9, a steam pipe 10, a steam drum 11, a tail gas processor 12, an exhaust port 13, a material guide plate 14, a feed hopper 15, a stirring shaft B16, a motor B17, a furnace body 18, stirring blades 19, a high-temperature belt 20, a connecting pipe 21, an air outlet valve 22, a liquid inlet pipe 23, a cooling sleeve 24, a material stirring plate 25, a chain ring 26, a connecting rod 27, an inner pipe 28, an opening 29, an outer sleeve 30 and a middle sleeve.

Detailed Description

Example 1

As shown in fig. 1-3, a biomass combustion furnace comprises a furnace body 17, a support leg 5 is fixedly connected to the lower surface of the furnace body 17, a feed hopper 14 is fixedly connected to the left side of the upper surface of the furnace body 17, a motor B16 is fixedly installed in the middle of the upper surface of the furnace body 17, a stirring shaft B15 is connected to an output shaft of the motor B16, the lower end of the stirring shaft B15 penetrates through the upper side wall of the furnace body 17 and extends into the upper portion of the inside of the furnace body 17, a motor A3 is arranged below the furnace body 17, a stirring shaft a 35 2 is connected to an output shaft of the motor A3, the upper end of the stirring shaft a2 penetrates through the lower side wall of the furnace body 17 and extends into the lower portion of the inside of the furnace body 17, stirring blades 18 are fixedly connected to the stirring shaft a2 and the stirring shaft B15, a high temperature belt 19 is fixedly connected to the, the material guide plate 13 and the stirring blades 18 are distributed in a staggered manner, the lower surfaces of the material guide plate 13, the stirring blades 18 and the high-temperature zone 19 are all connected with a material stirring device, the outer side of the stirring shaft A2 is connected with a discharging tower 4 through a bearing, the lower end of the discharging tower 4 is fixedly connected with the inner wall of the lower side of the furnace body 17, the outer side of the lower part of the furnace body 17 is sleeved with a cooling sleeve 23, the lower part of the right side of the cooling sleeve 23 is fixedly connected with a liquid inlet pipe 22, the upper part of the left side of the cooling sleeve 23 is fixedly connected with a liquid outlet pipe 8, the other end of the liquid outlet pipe 8 is connected with the inlet end of a steam pocket 10, the outlet end of the steam pocket 10 is connected with a steam pipe 9, the other end of the steam pipe 9 is connected with the stirring shaft A2, the lower parts of the, the heat exchanger 7 be connected with tail gas treater 11 through connecting pipe 20, tail gas treater 11 upper surface be provided with gas vent 12, furnace body 17 lower surface left side and lower surface right side equal fixedly connected with discharging pipe 1.

The steam pipe 9 is a telescopic hose.

The material guide plate 13 and the stirring blades 18 are both in a conical structure.

The material stirring device comprises a chain ring 25, the upper end of the chain ring 25 is fixedly connected with a connecting rod 26, the upper end of the connecting rod 26 is fixedly connected with the lower surfaces of the material guide plate 13, the stirring blades 18 and the high-temperature belt 19, and a material stirring plate 24 is hung in the chain ring 25.

(mixing) shaft A2 be the cavity sleeve pipe, (mixing) shaft A2 include inner tube 27, the inner tube 27 outside cup jointed middle level sleeve pipe 30, middle level sleeve pipe 30 outside cup jointed outer sleeve pipe 29, middle level sleeve pipe 30 upper surface be provided with opening 28, the lateral wall upper portion of inner tube 27 be provided with the venthole, be provided with the venthole on outer sleeve pipe 29's the lateral wall, outer sleeve pipe 29 outside link to each other with discharge tower 4 through the bearing, inner tube 27 lower extreme link to each other with motor A3's output shaft, inner tube 27 one side link to each other with steam pipe 9.

The discharging tower 4 is a stepped discharging tower, and the side wall of the discharging tower 4 is provided with an air outlet.

The material guide plate 13, the stirring blades 18 and the high-temperature belt 19 are all of seamless steel structures.

The heat exchanger 7 is a waste heat boiler.

The working principle of the embodiment is as follows: biomass fuel enters into the furnace body through the feeder hopper, the furnace body calcines biomass fuel, open motor A and motor B, motor A drives (mixing) shaft A rotatory, motor B drives (mixing) shaft B rotatory, (mixing) shaft A is located the furnace body lower part, (mixing) shaft B is located furnace body upper portion, stirring vane on (mixing) shaft A and the (mixing) shaft B carries out the segmentation stirring to biomass fuel, stirring effect is good, furnace body inner wall upper portion and lower part all are connected with the stock guide, the stock guide plays the guide effect, stock guide and stirring vane staggered distribution, biomass fuel is the broken line decline between stock guide and stirring vane, slow down unloading speed, be favorable to biomass fuel fully burns.

Tail gas generated in the fuel combustion process is discharged through gas outlet pipes at the lower parts of the left side and the right side of the furnace body, the other ends of the gas outlet pipes are connected with heat exchangers, the heat exchangers are waste heat boilers, waste heat in the tail gas is effectively utilized by the heat exchangers, the heat exchangers are connected with a tail gas processor through connecting pipes, the tail gas processor processes the tail gas, the processed clean gas is discharged into the environment through a gas outlet, pollution of the tail gas to the environment is reduced, and the energy-saving and environment-; the gas outlet pipe, the heat exchanger and the tail gas processor form a set of tail gas utilization and treatment device, the two sets of tail gas utilization and treatment devices are symmetrically arranged on the left side and the right side of the furnace body, the gas outlet pipe is provided with the gas outlet valve, the two sets of tail gas utilization and treatment devices can be used by adopting a stop-and-stop method, the device can be maintained by alternative use without stopping for maintenance, and the production requirement can be met.

Claims

1. The utility model provides a biomass combustion furnace, it includes the furnace body, furnace body lower surface fixedly connected with supporting leg, its characterized in that: the left side of the upper surface of the furnace body is fixedly connected with a feed hopper, the middle part of the upper surface of the furnace body is fixedly provided with a motor B, an output shaft of the motor B is connected with a stirring shaft B, the lower end of the stirring shaft B penetrates through the upper side wall of the furnace body and extends into the upper part in the furnace body, the motor A is arranged below the furnace body, the output shaft of the motor A is connected with a stirring shaft A, the upper end of the stirring shaft A penetrates through the lower side wall of the furnace body and extends into the lower part in the furnace body, stirring blades are fixedly connected on the stirring shaft A and the stirring shaft B, the middle part of the inner side wall of the furnace body is fixedly connected with a high-temperature zone, the upper part of the inner side wall of the furnace body and the lower part of the inner side wall of the furnace body are fixedly connected with guide plates, the guide plates and the stirring blades are distributed in a, discharge tower lower extreme and furnace body downside inner wall fixed connection, the furnace body lower part outside cup jointed cooling jacket, cooling jacket right side lower part fixedly connected with feed liquor pipe, cooling jacket left side upper portion fixedly connected with drain pipe, the drain pipe other end link to each other with the steam pocket entrance point, the steam pocket exit end be connected with the steam pipe, the steam pipe other end link to each other with (mixing) shaft A, furnace body left and right sides sub-symmetry connect with the outlet duct, the outlet duct on install the air outlet valve, the outlet duct other end be connected with the heat exchanger, the heat exchanger be connected with the tail gas treater through the connecting pipe, tail gas treater upper surface be provided with the gas vent, furnace body lower surface left side and the equal fixedly connected with discharging pipe in lower surface right side.

2. The biomass burning furnace as set forth in claim 1, wherein: the steam pipe is a telescopic hose.

3. The biomass burning furnace as set forth in claim 1, wherein: the material guide plate and the stirring blades are of conical structures.

4. The biomass burning furnace as set forth in claim 1, wherein: the material shifting device comprises a chain ring, a connecting rod is fixedly connected to the upper end of the chain ring, the upper end of the connecting rod is fixedly connected to the lower surfaces of the material guide plate, the stirring blades and the high-temperature zone, and a material shifting plate is hung in the chain ring.

5. The biomass burning furnace as set forth in claim 1, wherein: the stirring shaft A is a hollow sleeve, the stirring shaft A comprises an inner pipe, a middle-layer sleeve is sleeved on the outer side of the inner pipe, an outer-layer sleeve is sleeved on the outer side of the middle-layer sleeve, an opening is formed in the upper surface of the middle-layer sleeve, an air outlet is formed in the upper portion of the side wall of the inner pipe, an air outlet is formed in the side wall of the outer-layer sleeve, the outer-layer sleeve is connected with a discharging tower through a bearing, the lower end of the inner pipe is connected with an output shaft of a motor A, and one side of the inner pipe is connected with a.

6. The biomass burning furnace as set forth in claim 1, wherein: the discharging tower is a stepped discharging tower, and the side wall of the discharging tower is provided with an air outlet.

7. The biomass burning furnace as set forth in claim 1, wherein: the material guide plate, the stirring blades and the high-temperature belt are all of seamless steel structures.