CN2903707Y - Moving grate layered burning furnace - Google Patents

Moving grate layered burning furnace Download PDF

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Publication number
CN2903707Y
CN2903707Y CN 200620103810 CN200620103810U CN2903707Y CN 2903707 Y CN2903707 Y CN 2903707Y CN 200620103810 CN200620103810 CN 200620103810 CN 200620103810 U CN200620103810 U CN 200620103810U CN 2903707 Y CN2903707 Y CN 2903707Y
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CN
China
Prior art keywords
coal
rear arch
arch
grate
ash
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 200620103810
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Chinese (zh)
Inventor
申若飞
王卫红
Original Assignee
申若飞
王卫红
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 申若飞, 王卫红 filed Critical 申若飞
Priority to CN 200620103810 priority Critical patent/CN2903707Y/en
Application granted granted Critical
Publication of CN2903707Y publication Critical patent/CN2903707Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

A mobile fire hearth furnace includes a fire box with a residue extraction port and a coal feeding bucket, wherein the fire box is provided with a face arch, a rear arch and a movable fire grate, the fire grate is located under the face arch and the rear arch, a plenum is provided on the fire box, and the front of the rear arch is provided with an ash hole connected with the upper and the lower space of the rear arch. The utility model has the beneficial effects in that ash does not cumulate with large amount on the rear arch, and not cover the heat surface, thereby ensuring power of the boiler, the utility model improves coal adaptability of a moving fire bed burning furnace, the temperature of a firebox is decreased, and the coking of the boiler is reduced, thereby ensuring thorough combustion of the coal layer and reducing carbon content of clinker.

Description

A kind of mobile grate grate furnace
(1) technical field
The utility model relates to a kind of mobile grate grate furnace.
(2) background technology
Existing mobile grate grate furnace (mainly being the coal-burning boiler of traveling-grate stoker, reciprocating furnace fire grate, rolling fire grate etc.), its basic structure is: comprise burner hearth with slag-drip opening, be communicated with burner hearth add coal bunker, be provided with face arch, rear arch in the burner hearth, be positioned at the movably fire grate of face arch and rear arch below, fire grate is provided with air compartment.In application process, also there are two main problems:
The one, the collection ash problem on rear arch arch top.For addressing this problem, some boiler factories offer 1~2 ash-removing hole at the rear portion of rear arch, and the ash-removing valve door is set on ash-removing hole, but the operating temperature in the stove is very high, easily cause the ash-removing valve badge extremely to put not ash discharge, sometimes the ash-removing valve door damages from the serious cold draining wind of ash-removing hole, makes the boiler exhaust gas oxygen content raise, waste coal.Therefore the existing this way of offering ash-removing hole at the rear arch rear portion not can solve the collection ash problem on rear arch arch top, but also can cause other negative effect.
The 2nd, coal adaptability difference problem.The used fire coal of coal furnace can not have only a kind, divides according to quality to be divided into fat coal and colm, and in order to use different coals, the length of rear arch often is difficult to determine.If rear arch is shorter, then coal catches fire slowly, can cause the cinder phosphorus content to raise when burning inferior coal, and boiler efficiency descends, and causes energy waste; If rear arch is longer, then coal catches fire soon, often causes easy coking and rear arch collection ash in the stove when burning fat coal.Though the rear arch of adjustable length is arranged, under furnace high-temperature, very easily damages.
To sum up, existing mobile grate grate firing coal furnace can not solve the collection ash problem and the coal adaptability difference problem of rear arch well.
(3) summary of the invention
Mobile grate grate furnace can not solve the collection ash problem of rear arch and the deficiency of coal adaptability difference problem well in the prior art in order to overcome, the utility model provides a kind of mobile grate grate furnace with novel rear arch, can solve the collection ash problem and the coal adaptability difference problem of rear arch satisfactorily.
The technical scheme in the invention for solving the technical problem is: a kind of mobile grate grate furnace, comprise burner hearth with slag-drip opening, be communicated with described burner hearth add coal bunker, be provided with face arch, rear arch and fire grate movably in the described burner hearth, described fire grate is positioned at the below of described face arch and rear arch, the furnace wall of grate furnace is provided with air compartment, described air compartment is positioned at the below of described fire grate, and the front portion of described rear arch offers and is communicated with the described rear arch ash-removing hole in space up and down.
Further, described ash-removing hole has a plurality of.
The utility model adds coal in use from adding in the coal bunker, coal-fired entering under the face arch in the burner hearth by fire grate ignited, and then burns on fire grate.Oarse-grained flue dust drops on the rear arch front portion in flame during boiler operatiopn (high-temperature flue gas), drop on the ash on the rear arch or directly drop on the fire grate by ash-removing hole and to discharge, or be stacked into to a certain degree nature and drop on the fire grate by ash-removing hole and discharge, therefore cigarette ash can be on rear arch bulk deposition, can not cover heating surface, guarantee boiler output.Because the anterior perforate of rear arch, fire grate grate hyperthermia radiation heat energy is radiated the chimney arch upper space by ash-removing hole, and because the anterior perforate of rear arch has also reduced the coverage rate of rear arch to fire grate relatively, thereby reduce temperature in the stove, can effectively alleviate boiler coke.
Big owing to the fat coal caloric value when burning fat coal, coal easily catches fire, easily cause fire box temperature too high, therefore to fat coal, at the middle part of fire grate air compartment, the air compartment polygamy wind corresponding with the rear arch ash-removing hole, wind becomes flue gas after by coal combustion, and partial fume is by rear arch guiding face arch direction, ignite and just go into the coal of stove, alleviate coking thereby part flows to rear arch top reduction fire box temperature by ash-removing hole; Calorific value of coal is little when burning inferior coal, the coal difficulty is caught fire, there is not the corresponding air compartment polygamy wind of ash-removing hole at fire grate with the rear arch rear portion, wind becomes flue gas after by coal combustion, to the face arch direction, because the flue gas that flue gas jet action ash-removing hole flows through is few, so fire box temperature improves flue gas by the rear arch pilot flow, the coal of just going into stove is ignited easily, help the after-flame of coal.The ash-removing hole of rear arch front portion can be sealed or hidden with refractory material as required, to strengthen the adaptability of mobile grate grate firing coal furnace coal.
The beneficial effects of the utility model are: 1. cigarette ash can be on rear arch bulk deposition, can not cover heating surface, guarantee boiler output.2. strengthened the adaptability of mobile grate grate furnace to coal.3, reduce fire box temperature, reduce boiler coke.4, coal combustion is abundant, reduces the cinder phosphorus content.
(4) description of drawings
Fig. 1 is a structural representation of the present utility model.
(5) specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
With reference to Fig. 1, a kind of mobile grate grate furnace, comprise burner hearth 2 with slag-drip opening 1, be communicated with described burner hearth 2 add coal bunker 3, be provided with face arch 4, rear arch 5 and fire grate 6 movably in the described burner hearth 2, described fire grate 6 is positioned at the below of described face arch 4 and rear arch 5, described fire grate 6 is provided with air compartment 7, and the front portion of described rear arch 5 offers circular ash-removing hole 8, and ash-removing hole 8 is communicated with the upper and lower space of rear arch.Circular ash-removing hole the easiest realization on technology, ash-removing hole also can be the hole of other shapes certainly, as regular polygon, triangle etc.
The utility model adds coal in use from adding in the coal bunker 3, the coal-fired face arch that enters in the burner hearth 2 by fire grate 6 ignites for 4 times, burning on fire grate 6 then.It is combustion-supporting that wind enters the coal seam by air compartment 7, blowing afloat coal grain tiny on the coal seam, cinder simultaneously forms flue dust and flies to burner hearth with flue gas, oarse-grained flue dust is deposited on the rear arch 5, drop on the ash on the rear arch 5 or directly drop on the fire grate 6 by ash-removing hole 8 and to discharge, or be stacked into to a certain degree nature and drop on the fire grate 6 by ash-removing hole 8 and discharge, therefore cigarette ash can be on rear arch 5 bulk deposition, can not cover heating surface, guarantee boiler output.
Big owing to the fat coal caloric value when burning fat coal, coal easily catches fire, easily cause fire box temperature too high, therefore to fat coal, to the anterior air compartment polygamy wind corresponding with ash-removing hole 8 of the middle part air compartment of fire grate 6 and fire grate, wind becomes flue gas after by coal combustion, and partial fume is by rear arch 5 guiding face arch 4 directions, ignite and just go into the coal of stove, alleviate coking thereby partial fume flows to rear arch 5 tops reduction fire box temperature by ash-removing hole 8; Calorific value of coal is little when burning inferior coal, the coal difficulty is caught fire, fire grate there is not the corresponding rear portion air compartment polygamy wind in ash-removing hole place with the rear arch rear portion, wind becomes flue gas after by coal combustion, to face arch 4 directions, because the flue gas that flue gas jet action ash-removing hole flows through is few, so fire box temperature improves flue gas by rear arch 5 pilot flow, the coal of just going into stove is ignited easily, help the after-flame of coal.Ash-removing hole 8 usefulness refractory materials can be sealed or hidden as required, to strengthen the adaptability of mobile grate grate furnace coal.The collection ash at rear arch rear portion is by artificial removing.

Claims (2)

1. mobile grate grate furnace, comprise burner hearth with slag-drip opening, be communicated with described burner hearth add coal bunker, be provided with face arch, rear arch and fire grate movably in the described burner hearth, described fire grate is positioned at the below of described face arch and rear arch, described fire grate is provided with air compartment, it is characterized in that: the front portion of described rear arch offers and is communicated with the described rear arch ash-removing hole in space up and down.
2. mobile grate grate furnace as claimed in claim 1, it is characterized in that: described ash-removing hole has a plurality of.
CN 200620103810 2006-05-19 2006-05-19 Moving grate layered burning furnace Expired - Fee Related CN2903707Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200620103810 CN2903707Y (en) 2006-05-19 2006-05-19 Moving grate layered burning furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200620103810 CN2903707Y (en) 2006-05-19 2006-05-19 Moving grate layered burning furnace

Publications (1)

Publication Number Publication Date
CN2903707Y true CN2903707Y (en) 2007-05-23

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200620103810 Expired - Fee Related CN2903707Y (en) 2006-05-19 2006-05-19 Moving grate layered burning furnace

Country Status (1)

Country Link
CN (1) CN2903707Y (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101936538A (en) * 2010-07-28 2011-01-05 蒋钧 Grate firing equipment
CN101949534A (en) * 2010-09-30 2011-01-19 清华大学 Biomass grate firing boiler
CN106594710A (en) * 2016-12-19 2017-04-26 哈尔滨工业大学 Independent partitioned grate firing flue gas circulation combustion system and use method thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101936538A (en) * 2010-07-28 2011-01-05 蒋钧 Grate firing equipment
CN101936538B (en) * 2010-07-28 2015-05-20 蒋钧 Grate firing equipment
CN101949534A (en) * 2010-09-30 2011-01-19 清华大学 Biomass grate firing boiler
CN101949534B (en) * 2010-09-30 2012-05-02 清华大学 Biomass grate firing boiler
CN106594710A (en) * 2016-12-19 2017-04-26 哈尔滨工业大学 Independent partitioned grate firing flue gas circulation combustion system and use method thereof

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20070523

Termination date: 20120519