CN102635939A

CN102635939A - Vertical coal hot air furnace with double-layer heat conduction

Info

Publication number: CN102635939A
Application number: CN2012101319617A
Authority: CN
Inventors: 张华�
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-04-28
Filing date: 2012-04-28
Publication date: 2012-08-15

Abstract

The invention relates to a drying device, in particular to a vertical coal hot air furnace with double-layer heat conduction, which has the advantages of high thermal efficiency, good energy saving effect and high hot-air cleanliness and combines combustion and heat exchange into a whole. The vertical coal hot air furnace with double-layer heat conduction comprises a furnace body (1), a coal chamber (3), a smoke chamber (4), a heating chamber (5), a hot air outlet (6), a smoke collector (7), a smoke outlet pipe (8) and a smoke and dust separator (9), wherein a blower (2) communicated with the inside of the furnace body (1) is installed out of the top of the furnace body (1); the coal chamber (3) is formed in the space at the bottom of the furnace body; the smoke chamber (4) communicated with the coal chamber (3) is formed in middle space of the furnace body; the heating chamber (5) is formed in the space between the furnace body (1) inner wall and the smoke chamber (4); the side wall of the heating chamber (5) is communicated and provided with the hot air outlet (6); the smoke collector (7) is arranged in the smoke chamber (4) and is connected with the smoke outlet pipe (8) through a pipeline extending into the furnace body (1); and the smoke outlet pipe (8) is provided with the smoke and dust separator (9).

Description

The vertical fire coal hot-blast stove of double-deck heat conduction

Technical field

The present invention relates to a kind of drying equipment, be specially the vertical fire coal hot-blast stove of double-deck heat conduction.

Background technology

Drying is a key production unit of chemical industry, processing of farm products and many industrial departments; It is a multidisciplinary inter-trade process technology; Relate to departments such as chemical industry, food, forestry, medicine, aquatic products, agricultural, weaving and light industry because of it, so extremely people's concern in the world in recent years.Hot-blast stove is the important component part of drying equipment; It is the indispensable thermal source of heating power drying equipment; It receives people's attention equally as the important auxiliary equipment of drying equipment, and it mainly is used for reclaiming the stove fume afterheat, plays fuel savings and the effect of quickening the drying chamber gas heating.For example in large-sized solar oven dry matrimony vine device, the effect of hot-blast stove is exactly the temperature that is heated to air blast requirement, is transported to drying chamber and is used for drying of Chinese wolfberry, improves the matrimony vine rate of drying, guarantees the matrimony vine dry mass.

Along with the development of society, the kind of hot-blast stove is also more and more, and the kind of its thermal source is also more and more; Usually the high temperature heat source that adopts mainly contains two types: one type is that thermal source is directly made in fuel oil, combustion gas; Counter investment is low, but fuel is expensive, and operating cost is high; Increase drying cost, simultaneously there has been pollution in various degree in material; Another kind of is to make thermal source with fire coal, adopts the indirect mode, but also ubiquity significantly not enough.For China, owing to oil lacks, but the coal resources rich, hot-blast stove therefore widely-used and that make is main with fire coal basically; Simultaneously along with the nonmetal mining industry of China develop rapidly and to the deep exploitation of chemical products; Need the material kind of dry processing more and more; In a lot of industries, all need heat or dry with hot-air; All will use hot-air dry or heat with hot gas in the painting process like food industry, chemical industry, grain industry, medicinal material industry and mechanical industry, be that the use of main hot-blast stove is just more extensive with the fire coal.

At present, in the novel dried equipment that continues to bring out, all need hot blast to do thermal source; And raising along with production-scale expansion, quality; To drying source require increasingly high, and because target and working quantity different, also can be different to the requirement of hot-blast stove.Normally used hot-blast stove mainly contains two kinds: a kind of is the gas after the cold air mixing use of combustion gas in the burner hearth and introducing to be reached certain temperature use; The major defect of this equipment is a sanitary condition of having destroyed original cold air; In working medium, sneaked into the combustion gas composition, in some cases owing to possibly can not use to the pollution of the object that is heated or dries; Another kind of hot-blast stove is that the high-temperature fuel gas that produces in the burner hearth is arrived predetermined temperature to air heat in heat exchanger; The air that has been heated uses as medium, and this facilities air can be not contaminated, and the scope of application is very wide; But this hot-blast stove that uses at present exists efficient low; Problems such as service life is short, and the hot blast of generation is unholiness, and the higher and discharging of equipment operation and maintenance cost is not up to standard.

Summary of the invention

The object of the present invention is to provide a kind of compact conformation, heating load is big, and the thermal efficiency is high, good energy-conserving effect, and burning is complete, and the hot blast cleanliness factor is high, and easy to operate, labour intensity is low, and the collection burning is the vertical fire coal hot-blast stove of the double-deck heat conduction of one with heat exchange.

The vertical fire coal hot-blast stove of the double-deck heat conduction of the present invention comprises body of heater 1, coal-fired chamber 3, smoke chamber 4; Heating clamber 5, hot-blast outlet 6, flue gas gatherer 7, pipe 8; Flue-dust separator 9 is characterized in that, the pressure fan 2 with body of heater 1 internal communication is installed outside described body of heater 1 top; Space in the bottom forms coal-fired chamber 3, and central space forms the smoke chamber 4 that is communicated with coal-fired chamber 3, and the space between body of heater 1 inwall and the smoke chamber 4 forms heating clamber 5; The connection of heating clamber 5 sidewalls is provided with hot-blast outlet 6; Described flue gas gatherer 7 is arranged in the smoke chamber 4, is connected with pipe 8 through the pipeline that stretches out in the body of heater 1; Flue-dust separator 9 is installed on the pipe 8.

Further, two-layer spirality warm-air pipe 10 inside and outside described heating clamber 5 set inside have, warm-air pipe 10 is communicated with heating clamber 5 respectively.

Further, be provided with the spirality fin 11 that is communicated with smoke chamber 4 between the described warm-air pipe 10.

Further, 3 inside, described coal-fired chamber are equipped with fire bars 12 and following fire bars 13, and last fire bars 12 is separated into upper and lower two combustion chambers with following fire bars 13 with coal-fired chamber 3, and correspondence is provided with a coal filling hole 14 in the upper combustion chamber.

Further, the connection of the bottom of described flue-dust separator 9 is provided with dust collection chamber 15, on the pipeline between flue-dust separator 9 and the flue gas gatherer 7 waste-heat recovery device 16 is installed.

Further, the smoke port of described pipe 8 is equipped with boiler fan 17.

The vertical fire coal hot-blast stove of the double-deck heat conduction of the present invention has following beneficial effect:

(1) through two-layer spirality warm-air pipe 10 inside and outside adopting be arranged on the spirality fin 11 between the two-layer warm-air pipe 10, can increase the stay cycle of air in hot-blast stove, prolong relatively prime heat exchange stroke, further improved heat exchange efficiency; The design of two-layer warm-air pipe 10 simultaneously can be so that the heat that body of heater 1 distributes to the outside reduces as far as possible, has also practiced thrift the energy simultaneously improving heat exchange efficiency again.

(2) through flue gas gatherer 7 and flue-dust separator 9 are set; Effectively let flue gas and air respectively walk its road, and guaranteed that the hot-air that produces is a pure air, can effectively avoid simultaneously polluting; Utilize the flue gas of 9 pairs of discharges of flue-dust separator to carry out purified treatment, play the effect of protection environment.

(3) through the position that goes out body of heater 1 at flue gas waste-heat recovery device 16 is set, can further reclaims, thereby further improve utilization rate of waste heat the heat of being taken away in the flue gas, energy savings, usage range is wide.

(4) through fire bars 12 and following fire bars 13 are set in combustion chamber 3; Effectively utilizing upward, fire bars 12 is separated into two combustion chambers up and down with following fire bars 13 with combustion chamber 3; Thereby making does not have clean-burning coal to drop to carry out second-time burning in the lower combustion chamber in the upper combustion chamber; Energy-saving effect is better, has improved coal utilizaton rate.

Description of drawings

Figure is a structural representation of the present invention

Among the figure: body of heater 1, pressure fan 2, coal-fired chamber 3, smoke chamber 4, heating clamber 5, hot-blast outlet 6, flue gas gatherer 7, pipe 8, flue-dust separator 9, warm-air pipe 10, fin 11, last fire bars 12, following fire bars 13, coal filling hole 14, dust collection chamber 15, waste-heat recovery device 16, boiler fan 17

The specific embodiment

Instance 1

The vertical fire coal hot-blast stove of the double-deck heat conduction of the present invention; Comprise body of heater 1, be installed in outside body of heater 1 top and with the pressure fan 2 of body of heater 1 internal communication, the coal-fired chamber 3 that utilizes the space in body of heater 1 bottom to form; The smoke chamber 4 that is communicated with coal-fired chamber 3 that utilizes body of heater 1 central space to form; The heating clamber 5 that utilizes the space between body of heater 1 inwall and the smoke chamber 4 to form, connection is arranged on the hot-blast outlet 6 on heating clamber 5 sidewalls, is arranged on the flue gas gatherer 7 in the smoke chamber 4; Connect the pipe 8 of flue gas gatherer 7, be installed in the flue-dust separator 9 on the pipe 8.

When using the present invention to carry out drying, earlier coal fuel is put into coal-fired chamber 3 and take fire, through pressure fan 2 outside cleaned air is sent into heating in the heating clamber 5 in the body of heater 1 simultaneously; In the coal fuel combustion, can produce great amount of heat, it carries out heat exchange through heating clamber 5 and heating clamber 5 inner cleaned airs, exchanges to behind the certain hour hot-air and discharges from hot-blast outlet 6 and get into next step drying processes; In heat exchange, flue gas gatherer 7 can be collected the back with the flue gas that produces and send into flue-dust separator 9 through pipe 8, thereby can begin further udst separation to flue gas, discharges afterwards outside the body of heater 1.

Instance 2

The vertical fire coal hot-blast stove of the double-deck heat conduction of the present invention, as shown in the figure, two-layer spirality warm-air pipe 10 inside and outside its heating clamber 5 set inside have, warm-air pipe 10 is communicated with heating clamber 5 respectively; Be provided with the spirality fin 11 that is communicated with smoke chamber 4 between the warm-air pipe 10.After sending in the heating clamber 5 through pressure fan 2 through outside cleaned air, can be along spirality warm-air pipe 10 in body of heater 1 inner loop, spiral warm-air pipe 10 can prolong relatively prime heat exchange stroke, thereby carries out sufficient heat exchange; Simultaneously, be spiral fin 11 equally owing between warm-air pipe 10, be provided with, can further improve heat exchange efficiency, strengthen the heat exchange effect.

Wherein, 3 inside, coal-fired chamber are equipped with the last fire bars 12 and following fire bars 13 that coal-fired chamber 3 is separated into upper and lower two combustion chambers; Thereby making does not have clean-burning coal to drop to carry out second-time burning in the lower combustion chamber in the upper combustion chamber; Make burning more abundant, energy-saving effect is better, has fundamentally improved coal utilizaton rate; Owing to correspondence in the upper combustion chamber is provided with a coal filling hole 14, can in body of heater 1, add fuel easily simultaneously, play the effect of observing body of heater 1 internal combustion situation simultaneously, easy to operate, labour intensity is low.

Wherein, the connection of the bottom of flue-dust separator 9 is provided with dust collection chamber 15, can very easily the cigarette ash that from flue gas, reclaims be collected, and conveniently dust is handled, and has reduced working strength in the time of the protection environment; On the pipeline between flue-dust separator 9 and the flue gas gatherer 7 waste-heat recovery device 16 is installed, can further reclaims, thereby further improve utilization rate of waste heat, play the effect of energy savings the heat of being taken away in the flue gas.

Wherein, the smoke port of pipe 8 is equipped with boiler fan 17, makes things convenient for flue gas in body of heater 1, to discharge, and has reduced labour intensity and maintenance frequency, has also improved the operating efficiency of whole hot-blast stove.

All the other structures and occupation mode are as described in the instance 1.

Claims

1. the vertical fire coal hot-blast stove of double-deck heat conduction comprises body of heater (1), coal-fired chamber (3), smoke chamber (4); Heating clamber (5), hot-blast outlet (6), flue gas gatherer (7), pipe (8); Flue-dust separator (9) is characterized in that, the pressure fan (2) with body of heater (1) internal communication is installed outside described body of heater (1) top; Space in the bottom forms coal-fired chamber (3), and central space forms the smoke chamber (4) that is communicated with coal-fired chamber (3), and the space between body of heater (1) inwall and the smoke chamber (4) forms heating clamber (5); The connection of heating clamber (5) sidewall is provided with hot-blast outlet (6); Described flue gas gatherer (7) is arranged in the smoke chamber (4), is connected with pipe (8) through the pipeline that stretches out in the body of heater (1); Flue-dust separator (9) is installed on the pipe (8).

2. the vertical fire coal hot-blast stove of double-deck heat conduction according to claim 1, it is characterized in that: two-layer spirality warm-air pipe (10) inside and outside described heating clamber (5) set inside has, warm-air pipe (10) are communicated with heating clamber (5) respectively.

3. the vertical fire coal hot-blast stove of double-deck heat conduction according to claim 2 is characterized in that: be provided with the spirality fin (11) that is communicated with smoke chamber (4) between the described warm-air pipe (10).

4. the vertical fire coal hot-blast stove of double-deck heat conduction according to claim 1; It is characterized in that: inside, described coal-fired chamber (3) is equipped with fire bars (12) and following fire bars (13); Last fire bars (12) and following fire bars (13) are separated into upper and lower two combustion chambers with coal-fired chamber (3), and correspondence is provided with a coal filling hole (14) in the upper combustion chamber.

5. the vertical fire coal hot-blast stove of double-deck heat conduction according to claim 1; It is characterized in that: the bottom connection of described flue-dust separator (9) is provided with dust collection chamber (15), on the pipeline between flue-dust separator (9) and the flue gas gatherer (7) waste-heat recovery device (16) is installed.

6. the vertical fire coal hot-blast stove of double-deck heat conduction according to claim 1, it is characterized in that: the smoke port of described pipe (8) is equipped with boiler fan (1 7).