CN203731392U - U-shaped flame boiler with overhead straight-through pulverized coal burner - Google Patents

U-shaped flame boiler with overhead straight-through pulverized coal burner Download PDF

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Publication number
CN203731392U
CN203731392U CN201320815499.2U CN201320815499U CN203731392U CN 203731392 U CN203731392 U CN 203731392U CN 201320815499 U CN201320815499 U CN 201320815499U CN 203731392 U CN203731392 U CN 203731392U
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CN
China
Prior art keywords
chamber
pulverized coal
straight
coal burner
partition
Prior art date
Application number
CN201320815499.2U
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Chinese (zh)
Inventor
王民发
王欢
郎鹏德
郎凤娥
吴少华
叶克亚
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山西蓝天环保设备有限公司
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Priority to CN201320815499.2U priority Critical patent/CN203731392U/en
Application granted granted Critical
Publication of CN203731392U publication Critical patent/CN203731392U/en

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Abstract

The utility model discloses a U-shaped flame boiler with an overhead straight-through pulverized coal burner, and belongs to the technical field of boilers. The utility model aims to provide the U-shaped flame boiler which is equipped with the straight-through pulverized coal burner on the top of the boiler and is high in combustion efficiency. A technical scheme adopted to solve the technical problem is as follows: the U-shaped flame boiler with the overhead straight-through pulverized coal burner comprises a furnace body and an ash falling pit, wherein the ash falling pit is arranged on the bottom of the furnace body; a membrane type water-cooling wall is arranged on the inner wall of the furnace body; a first partition wall is arranged on the top in the furnace body; the first partition wall is used for partitioning the furnace body into a combustion chamber and a waste gas chamber; the lower parts of the combustion chamber and the waste gas chamber are communicated to form a smoke convection channel; the straight-through pulverized coal burner is arranged on the top of the combustion chamber; a second partition wall is arranged on the bottom of the waste gas chamber and used for partitioning the waste gas chamber into a left chamber and a right chamber; the upper parts of the left chamber and the right chamber are communicated; a smoke discharge channel is arranged on the bottom of the side wall of the right chamber. The U-shaped flame boiler with the overhead straight-through pulverized coal burner disclosed by the utility model is high in heat utilization rate and little in waste gas emission.

Description

The U-shaped flame boiler of straight-through pulverized coal burner overhead

Technical field

The U-shaped flame boiler of the utility model straight-through pulverized coal burner overhead, belongs to boiler technology field.

Background technology

Boiler industry is the consumption coal rich and influential family of China, and the energy-saving and emission-reduction of boiler industry have very important impact to the realization of national Energy Intensity Reduction target.The trend of boiler technology development is the increase of capacity and the raising of parameter, and wherein the development of combustion technology is an importance.Coal burner is the critical component of boiler combustion equipment, and its Main Function is to transfer the fuel and air in burner hearth, realizes and reasonably mixing and burning.Along with the pressure of current environmental pollution increases, the emission control of burner has become the important investigation index of burner performance.

Current coal burner is mainly divided into straight-through pulverized coal burner and the large class of vortex burner two, and vortex burner adopts the mode of front wall collocation or front and back wall cross collocation, and wall formula is arranged; Four jiaos of arrangements of the many employings of straight-through pulverized coal burner, burner arrangement, on four angles of burner hearth, forms tangential firing.

DC burner corner tangential firing causes furnace outlet gas temperature poor bigger than normal, and DC burner tangential firing requires burner hearth to approach square, and along with the increasing of capacity, the size of burner hearth strengthens thereupon.If ensure, a Secondary Air is good mixes and the rigidity of jet, and the blower fan that this just needs high pressure has restricted the large scale development of tangential firing boiler.

Utility model content

The utility model overcomes the deficiency that prior art exists, and technical problem to be solved is: provide a kind of straight-through pulverized coal burner is placed in to boiler top, U-shaped flame boiler that efficiency of combustion is high.

In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is:

The U-shaped flame boiler of straight-through pulverized coal burner overhead, comprise body of heater and the ashcan that falls, described fall ashcan be arranged on the bottom of body of heater, the inwall of body of heater is provided with fin panel casing, top in described body of heater is provided with the first partition wall, body of heater is divided into combustion chamber and exhaust air chamber by described the first partition wall, the bottom of described combustion chamber and exhaust air chamber is connected, form first pair of cigarette channel, the top of described combustion chamber is provided with straight-through pulverized coal burner, the discharging opening of described straight-through pulverized coal burner is connected with the feeding mouth of combustion chamber, the bottom of described exhaust air chamber is provided with the second partition wall, exhaust air chamber is divided into left chamber and right ventricle by the second partition wall, the top of described left chamber and right ventricle is connected, form second pair of cigarette channel, the sidewall bottom of described right ventricle is provided with discharge flue.

Described discharge flue is arranged on the side away from left chamber.

Indoor economizer and the air preheater of being disposed with from top to bottom in a described left side.

In described right ventricle, be disposed with from top to bottom economizer and air preheater.

The utility model compared with prior art has following beneficial effect.

One, the utility model is by straight-through pulverized coal burner overhead, top in body of heater is fixedly installed the first partition wall, body of heater is divided into combustion chamber and exhaust air chamber by the first partition wall, the bottom of combustion chamber and exhaust air chamber communicates, form cigarette channel, it is U-shaped that flame is in combustion process, and, exhaust air chamber is divided into left chamber and right ventricle by the second partition wall, the top of left chamber and right ventricle is connected, form second pair of eye passage, when being moved in body of heater, flue gas becomes " S " type, when flue gas and flame move in body of heater, speed slows down, the heat energy of flue gas and flame and the heat exchange of fin panel casing are thorough, realize low energy consumption, low emission, realize the clean burning of coal, solve the problem that existing combustion of industrial boiler efficiency is low and Air Pollutants Emissions is large, and this structure to have solved the cost of front-back wall in arranging higher, the layout of burner is affected and the problem such as pipe deforming is inhomogeneous by coal pulverizer number of units.

Two, the direct jet of straight-through pulverized coal burner exit flow is similar to free jet, turbulent burner relatively, a little less than little, the early stage mixing of its angle of flare, but jet rigidity is strong, far firing range, different from turbulent burner, DC burner is not to fight and surely fire by high-temperature flue gas point in the recirculating zone of single burner outlet, and it is flexible that the Secondary Air of parallel flow burner is sent into mode, due to overfiren air port and primary air nozzle relatively independent, arrange freely each other, can have multiple arrangement.In the time using bituminous coal that volatile matter is high or brown coal, can adopt the arrangement of impartial air distribution, make Secondary Air to supply with combustion chamber in time, fully, be conducive to making full use of of fuel, in addition, in the time using meager coal that volatile matter is low and anthracite, can adopt the mode of a wind centralized arrangement, a wind centralized arrangement, makes the burning of breeze airflow relatively concentrated, can improve local heat load and the temperature of combustion zone, improve ignition condition.

Three, in left chamber of the present utility model and right ventricle, be provided with economizer and air preheater, multiple economizer and air preheater system are so just formed, utilize the slow feature of flue gas flow rate in the utility model, preheating in flue gas fully can be absorbed, improve the utilization rate of fuel, saved resource.

Brief description of the drawings

Below in conjunction with accompanying drawing, the utility model is described in more detail.

Fig. 1 is structural representation of the present utility model.

In figure: 1 is body of heater, 11 is combustion chamber, and 12 is exhaust air chamber, 13 is the ashcan that falls, and 14 is the first partition wall, and 15 is fin panel casing, 111 is straight-through pulverized coal burner, and 112 is first pair of cigarette channel, and 121 is discharge flue, 122 is air preheater, 123 is economizer, and 124 is the second partition wall, and 125 is second pair of cigarette channel, 126 is left chamber, and 127 is right ventricle.

Detailed description of the invention

By reference to the accompanying drawings the utility model is described in further detail now, accompanying drawing is the schematic diagram of simplifying, and basic structure of the present utility model is only described in a schematic way, and therefore it only shows the formation relevant with the utility model.

The U-shaped flame boiler of straight-through pulverized coal burner overhead, comprise body of heater 1 and the ashcan 13 that falls, described fall ashcan 13 be arranged on the bottom of body of heater 1, the inwall of body of heater 1 is provided with fin panel casing 15, top in described body of heater 1 is provided with the first partition wall 14, body of heater 1 is divided into combustion chamber 11 and exhaust air chamber 12 by described the first partition wall 14, the bottom of described combustion chamber 11 and exhaust air chamber 12 is connected, form first pair of cigarette channel 112, the top of described combustion chamber 11 is provided with straight-through pulverized coal burner 111, the discharging opening of described straight-through pulverized coal burner 111 is connected with the feeding mouth of combustion chamber 11, the bottom of described exhaust air chamber 12 is provided with the second partition wall 124, exhaust air chamber 12 is divided into left chamber 126 and right ventricle 127 by the second partition wall 124, the top of described left chamber 126 and right ventricle 127 is connected, form second pair of cigarette channel 125, the sidewall bottom of described right ventricle 127 is provided with discharge flue 121.

Described discharge flue 121 is arranged on the side away from left chamber 126.

In described left chamber 126, be disposed with from top to bottom economizer 123 and air preheater 122.

In described right ventricle 127, be disposed with from top to bottom economizer 123 and air preheater 122.

The present invention is placed in straight-through pulverized coal burner 111 at the top of U-shaped boiler, after air and fuel spray into from top to down, in the interior burning in combustion chamber 11, flame and flue gas be motion from top to bottom in combustion chamber 11, the high-temperature flue gas of 11 inside, combustion chamber and flame and fin panel casing 15 complete after heat exchange, enter first pair of cigarette channel 112, turnover and on wash away successively air preheater 122 and the economizer 123 in left chamber 126, then flue gas enters second pair of cigarette channel 125, to the flowing velocity of the further reducing smoke of cigarette channel, flue gas enters behind right ventricle 127, turnover and under wash away successively economizer 123 and air preheater 122, after economizer 123 and air preheater 122 further absorb the heat in waste gas, waste gas is finally discharged by the discharge flue 121 that is arranged on 127 bottoms, right ventricle, in this process, the flow trace of flame and flue gas is U-shaped, lime-ash sedimentation in motion process that coal dust firing produces, enter ashcan 13.

Claims (4)

1. the U-shaped flame boiler of straight-through pulverized coal burner overhead, comprise body of heater (1) and the ashcan that falls (13), described fall ashcan (13) be arranged on the bottom of body of heater (1), the inwall of body of heater (1) is provided with fin panel casing (15), it is characterized in that, top in described body of heater (1) is provided with the first partition wall (14), body of heater (1) is divided into combustion chamber (11) and exhaust air chamber (12) by described the first partition wall (14), the bottom of described combustion chamber (11) and exhaust air chamber (12) is connected, form first pair of cigarette channel (112), the top of described combustion chamber (11) is provided with straight-through pulverized coal burner (111), the discharging opening of described straight-through pulverized coal burner (111) is connected with the feeding mouth of combustion chamber (11), the bottom of described exhaust air chamber (12) is provided with the second partition wall (124), exhaust air chamber (12) is divided into left chamber (126) and right ventricle (127) by the second partition wall (124), the top of described left chamber (126) and right ventricle (127) is connected, form second pair of cigarette channel (125), the sidewall bottom of described right ventricle (127) is provided with discharge flue (121).
2. the U-shaped flame boiler of straight-through pulverized coal burner overhead according to claim 1, is characterized in that, described discharge flue (121) is arranged on the side away from left chamber (126).
3. the U-shaped flame boiler of straight-through pulverized coal burner overhead according to claim 1 and 2, is characterized in that, is disposed with from top to bottom economizer (123) and air preheater (122) in described left chamber (126).
4. the U-shaped flame boiler of straight-through pulverized coal burner overhead according to claim 1 and 2, is characterized in that, is disposed with from top to bottom economizer (123) and air preheater (122) in described right ventricle (127).
CN201320815499.2U 2013-12-13 2013-12-13 U-shaped flame boiler with overhead straight-through pulverized coal burner CN203731392U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320815499.2U CN203731392U (en) 2013-12-13 2013-12-13 U-shaped flame boiler with overhead straight-through pulverized coal burner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320815499.2U CN203731392U (en) 2013-12-13 2013-12-13 U-shaped flame boiler with overhead straight-through pulverized coal burner

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CN203731392U true CN203731392U (en) 2014-07-23

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104121579A (en) * 2014-08-06 2014-10-29 北京大邦实创节能技术服务有限公司 Boiler provided with dual-register pulverized coal burner on top
CN104296129A (en) * 2014-10-15 2015-01-21 中国计量学院 Symmetrical-combustion W-Type flame boiler
CN105650625A (en) * 2016-02-01 2016-06-08 哈尔滨红光锅炉总厂有限责任公司 Efficient pulverized coal-fired industrial boiler
CN107559821A (en) * 2017-09-21 2018-01-09 哈尔滨工业大学 The multiple-pass industrial coal powder boiler of flue gas recirculation and vortex burner overhead

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104121579A (en) * 2014-08-06 2014-10-29 北京大邦实创节能技术服务有限公司 Boiler provided with dual-register pulverized coal burner on top
CN104296129A (en) * 2014-10-15 2015-01-21 中国计量学院 Symmetrical-combustion W-Type flame boiler
CN104296129B (en) * 2014-10-15 2016-08-24 宁波大学 A kind of W type flame boiler of symmetrical combustion
CN105650625A (en) * 2016-02-01 2016-06-08 哈尔滨红光锅炉总厂有限责任公司 Efficient pulverized coal-fired industrial boiler
CN107559821A (en) * 2017-09-21 2018-01-09 哈尔滨工业大学 The multiple-pass industrial coal powder boiler of flue gas recirculation and vortex burner overhead

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GR01 Patent grant
EXPY Termination of patent right or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140723

Termination date: 20151213