CN207006545U - The vertical internal-combustion boiler of small-sized low nitrogen powder combustor overhead type - Google Patents

The vertical internal-combustion boiler of small-sized low nitrogen powder combustor overhead type Download PDF

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Publication number
CN207006545U
CN207006545U CN201720709462.XU CN201720709462U CN207006545U CN 207006545 U CN207006545 U CN 207006545U CN 201720709462 U CN201720709462 U CN 201720709462U CN 207006545 U CN207006545 U CN 207006545U
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China
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boiler
smoke
burner
small
low nitrogen
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CN201720709462.XU
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Inventor
马宗瑜
马怡琳
冯铁恒
玄兆臣
岂付春
刘春美
郭利亚
杨栋
杨朋
樊学红
胡丽丽
陈守云
韩玉杰
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Tangshan Jinsha Burning Heat Energy Ltd By Share Ltd
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Tangshan Jinsha Burning Heat Energy Ltd By Share Ltd
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Abstract

A kind of vertical internal-combustion boiler of small-sized low nitrogen powder combustor overhead type, including boiler body, fire trough and burner three parts, the burner and fire trough are arranged on the furnace wall at the top of the boiler body, burner hearth that the boiler is set gradually from the inside to the outside, water interlayer, smoke pipe, external thermal insulation, burner hearth bottom set ash port;Boiler body is vertical boiler, and burner is arranged on the furnace wall at the top of boiler by mounting flange respectively with fire trough;The bottom of boiler furnace is provided with back smoke-box, returns smoke-box bottom installation ash port;Compressed-air atomizer is set at the top of smoke pipe, and the compressed-air atomizer is connected by pipeline with compressed air supply arrangement;Afterburning air port is provided with fire trough;Cooling water is full of in water interlayer outside burner hearth.This vertical internal-combustion boiler, it is simple in construction, operate steadily, improvement cost is low, can effectively improve the combustion rate of powder in boiler.

Description

The vertical internal-combustion boiler of small-sized low nitrogen powder combustor overhead type
Technical field
Vertical internal-combustion boiler combustion technology is the utility model is related to, refers in particular to a kind of small-sized low nitrogen powder combustor overhead The vertical internal-combustion boiler of formula.
Background technology
Carry out in boiler industry with burning coal powder in 12 targets for highlighting environmental protection energy-saving and emission-reduction in the works in China The old-fashioned traveling-grate stoker coal-burning boiler of boiler instead turns into urgent trend.
At present, the miniature boiler used in hotel, teahouse, bathing pool etc. is usually coal-burning boiler, and the thermal efficiency is low, and coal is not Easy to burn out, the energy is wasted, does not pay attention to the distribution in temperature field in stove, the pollutant such as nitrogen oxides is more caused by burning.It is furthermore more Number tea-bath furnaces and small-sized chain furnace do not have fume treatment auxiliary subsequently, one of the main reason for being atmosphere pollution.
Utility model content
The purpose of this utility model is to provide a kind of vertical internal-combustion boiler of small-sized low nitrogen powder combustor overhead type.
In order to reach above-mentioned purpose, solution of the present utility model is:A kind of small-sized low nitrogen powder combustor overhead type Vertical internal-combustion boiler, including boiler body, fire trough and burner three parts, the burner and fire trough be arranged on the pot On furnace wall at the top of furnace body, burner hearth that the boiler is set gradually from the inside to the outside, water interlayer, smoke pipe, external thermal insulation, burner hearth bottom Ash port is set,
Described boiler body is vertical boiler, and burner is arranged at the top of boiler by mounting flange respectively with fire trough Furnace wall on;
The bottom of boiler furnace is provided with back smoke-box, returns smoke-box bottom installation ash port;
Compressed-air atomizer is set at the top of smoke pipe, and the compressed-air atomizer is connected by pipeline and compressed air supply arrangement It is logical;
Afterburning air port is provided with fire trough.
Fire trough is connected by high-strength bolt with boiler.
It is up big and down small cylinder conical structure to return smoke-box.
Return the columnar structured diameter for being connected with burner hearth bottom, having a diameter larger than smoke pipe place circumference of upper part of smoke-box.
The bottom for returning smoke-box lower cone shape structure connects with ash port.
After such scheme, this vertical internal-combustion boiler, simple in construction disclosed in the utility model, operates steadily, changes Cause low, the combustion rate of powder in boiler can be effectively improved.
The technology that is filled by internally fired boiler vertical and coal burner top, the complex optimum structure of vertical boiler and Combustibility.During boiler operatiopn, coal dust is sent into burner by once defeated powder wind, is mixed with secondary combustion-supporting wind rapidly, realizes combustion Burn, but by the secondary combustion-supporting wind deficiency in draught of burner supplying to realize the completely burned of coal dust, by matching somebody with somebody from fire trough The afterburning wind entered realizes the completely burned of coal dust.Classification, accurate air distribution avoid the concentration high-temp combustion of coal dust, reach low nitrogen combustion The purpose of burning.
Brief description of the drawings
Fig. 1 is the main structure diagram of the utility model vertical boiler.
Fig. 2 is the side structure schematic view of the utility model vertical boiler.
Fig. 3 is the overlooking the structure diagram of the utility model vertical boiler.
In figure:Coal burner 1, coal dust firing road 2, compressed-air atomizer 3, burner hearth 4, furnace wall 5, water interlayer 6, smoke pipe 7, external thermal insulation 8, return smoke-box 9, ash port 10, water return outlet base 11, blowdown base 12, hot water outlet base 13, access hole 14, row Cigarette interface base 15, compressed air interface base 16, afterburning air port 17.
Embodiment
In order to which the technical solution of the utility model is explained further, 1-3 below in conjunction with the accompanying drawings, by instantiation come to this Utility model is described in detail.
A kind of vertical internal-combustion boiler of small-sized low nitrogen powder combustor overhead type is the utility model is related to, as Figure 1-3, Main to include boiler body, coal dust firing road 2 and the three parts of coal burner 1, the burner 1 and fire trough 2 are arranged on described On furnace wall at the top of boiler body, burner hearth 4 that the boiler is set gradually from the inside to the outside, water interlayer 6, smoke pipe 7, external thermal insulation 8, stove The bottom of thorax 4 sets ash port 10.
The vertical internal-combustion boiler of this small-sized low nitrogen powder combustor overhead type, its boiler body are vertical boiler, combustion Burner is arranged on the furnace wall at the top of boiler by mounting flange respectively with fire trough.The bottom of boiler furnace is provided with back cigarette Room, return smoke-box bottom installation ash port.
Fire trough is connected by high-strength bolt with boiler.Fire trough 2 and boiler are split-type structural, and two parts pass through spiral shell Bolt is attached, and is advantageous to the maintenance and maintenance of fire trough 2.
It is up big and down small cylinder conical structure to return smoke-box.The upper part for returning smoke-box columnar structured connects with burner hearth bottom It is logical, the diameter of circumference where having a diameter larger than smoke pipe.The bottom for returning smoke-box lower cone shape structure connects with ash port.Burner hearth 4 Bottom set it is big return smoke-box 9 and ash port 10, make to reduce from the flue gas that burner hearth 4 comes out returning flow velocity at smoke-box 9, in flue gas Dust separates with flue gas, is deposited at ash port 10, is discharged by steam generator system setting timing.Such a arrangement, flue gas Flow direction and flow velocity here changes, and is advantageous to the removing of coal ash in flue gas, can reduce the supporting dedusting behind boiler The live load of device, be advantageous to the longtime running of equipment.
Compressed-air atomizer is set at the top of smoke pipe, and the compressed-air atomizer is connected by pipeline and compressed air supply arrangement It is logical.
Afterburning air port 17 is provided with fire trough.
Cooling water is full of in water interlayer outside burner hearth.Vertical internal-combustion boiler water interlayer 6 is larger, therefore quantity of circulating water is big, Flue-gas temperature in the temperature of burner hearth 4 and smoke pipe 7 is all relatively low, and boiler internal structure is not easy coking, and the thermal efficiency is high, stable.
The utility model flue gas shares two backhauls, i.e. burner hearth 4 and smoke pipe 7,2 circle smoke pipes 7 is arranged altogether, in every smoke pipe 7 Top be respectively provided with compressed-air atomizer 3, the online deashing processing for carrying out smoke pipe 7, beneficial to boiler operation steady in a long-term.
During boiler operatiopn in the present embodiment, coal dust is sent into burner 1 by once defeated powder wind, rapidly with secondary combustion-supporting wind Mixing, burning is realized, but the secondary combustion-supporting wind deficiency in draught being incorporated by burner 1 leads to realize the completely burned of coal dust Cross the completely burned that the afterburning wind being incorporated from fire trough 2 realizes coal dust.Classification, accurate air distribution avoid the collection high temperature combustion of coal dust Burn, reach the purpose of low nitrogen burning.
A kind of vertical boiler of small-sized low nitrogen powder combustor overhead type of this implementation case, is exactly based on a series of above-mentioned technologies Realize that high-temperature region oxygen deprivation, combustion air classification afterburning, water circulation amount be big and burner hearth in the technical indicator such as coal ash removal efficiency height, so as to Efficiently solve easy coking in boiler furnace, radiation heat transfer low intensity, the easy dust stratification of convection bank, formation of nitrogen oxides it is big and The various problems such as the sack cleaner life-span is low, thus enable small-sized pulverized-coal fired boiler be widely implemented.

Claims (5)

1. a kind of vertical internal-combustion boiler of small-sized low nitrogen powder combustor overhead type, including boiler body, fire trough and burner Three parts, the burner and fire trough are arranged on the furnace wall at the top of the boiler body, and the boiler is set gradually from the inside to the outside Burner hearth, water interlayer, smoke pipe, external thermal insulation, burner hearth bottom set ash port, it is characterized in that:
Described boiler body is vertical boiler, and burner is arranged on the stove at the top of boiler by mounting flange respectively with fire trough On wall;
The bottom of boiler furnace is provided with back smoke-box, returns smoke-box bottom installation ash port;
Compressed-air atomizer is set at the top of smoke pipe, and the compressed-air atomizer is connected by pipeline with compressed air supply arrangement;
Afterburning air port is provided with fire trough.
2. the vertical internal-combustion boiler of small-sized low nitrogen powder combustor overhead type according to claim 1, it is characterized in that:Burning Road is connected by high-strength bolt with boiler.
3. the vertical internal-combustion boiler of small-sized low nitrogen powder combustor overhead type according to claim 1, it is characterized in that:It is described Return smoke-box be up big and down small cylinder conical structure.
4. the vertical internal-combustion boiler of small-sized low nitrogen powder combustor overhead type according to claim 3, it is characterized in that:It is described Return the columnar structured diameter for being connected with burner hearth bottom, having a diameter larger than smoke pipe place circumference of upper part of smoke-box.
5. the vertical internal-combustion boiler of small-sized low nitrogen powder combustor overhead type according to claim 3, it is characterized in that:It is described The bottom for returning smoke-box lower cone shape structure connects with ash port.
CN201720709462.XU 2017-06-19 2017-06-19 The vertical internal-combustion boiler of small-sized low nitrogen powder combustor overhead type Active CN207006545U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720709462.XU CN207006545U (en) 2017-06-19 2017-06-19 The vertical internal-combustion boiler of small-sized low nitrogen powder combustor overhead type

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720709462.XU CN207006545U (en) 2017-06-19 2017-06-19 The vertical internal-combustion boiler of small-sized low nitrogen powder combustor overhead type

Publications (1)

Publication Number Publication Date
CN207006545U true CN207006545U (en) 2018-02-13

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Application Number Title Priority Date Filing Date
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Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of utility model: Small top mounted vertical internal combustion boiler with low nitrogen powder burner

Effective date of registration: 20210624

Granted publication date: 20180213

Pledgee: Bank of China Limited Qian'an Branch

Pledgor: TANGSHAN JINSHA COMBUSTION HEAT ENERGY Co.,Ltd.

Registration number: Y2021990000552

PE01 Entry into force of the registration of the contract for pledge of patent right