WO2012088927A1 - 煤粉炉 - Google Patents

煤粉炉 Download PDF

Info

Publication number
WO2012088927A1
WO2012088927A1 PCT/CN2011/079594 CN2011079594W WO2012088927A1 WO 2012088927 A1 WO2012088927 A1 WO 2012088927A1 CN 2011079594 W CN2011079594 W CN 2011079594W WO 2012088927 A1 WO2012088927 A1 WO 2012088927A1
Authority
WO
WIPO (PCT)
Prior art keywords
furnace body
pulverized coal
chamber
high temperature
secondary air
Prior art date
Application number
PCT/CN2011/079594
Other languages
English (en)
French (fr)
Inventor
张友晶
Original Assignee
Zhang Youjing
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 Zhang Youjing filed Critical Zhang Youjing
Publication of WO2012088927A1 publication Critical patent/WO2012088927A1/zh

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C6/00—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion
    • F23C6/04—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion in series connection
    • F23C6/045—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion in series connection with staged combustion in a single enclosure
    • F23C6/047—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion in series connection with staged combustion in a single enclosure with fuel supply in stages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C7/00—Combustion apparatus characterised by arrangements for air supply
    • F23C7/02—Disposition of air supply not passing through burner
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D1/00—Burners for combustion of pulverulent fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M2900/00—Special features of, or arrangements for combustion chambers
    • F23M2900/05004—Special materials for walls or lining
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M2900/00—Special features of, or arrangements for combustion chambers
    • F23M2900/05021—Wall blocks adapted for burner openings

Definitions

  • the invention relates to a pulverized coal fired furnace.
  • the existing pulverized coal furnace has the following defects: First, the pulverized coal is ignited by burning oil, and the running cost is too high. Moreover, the air supply pulverized by the pulverized coal pulverized coal is too high for the combustion air of the pulverized coal. If the air supply volume is small, the pulverized coal cannot be fully burned. If the air supply volume is large, the fire in the furnace will be extinguished. Therefore, the operation is difficult; secondly, the structure is complicated and large, and the production cost is high. The above defects directly affect the promotion and application of the pulverized coal furnace.
  • the object of the present invention is to provide a pulverized coal furnace which is small in size, simple in structure, low in production cost, and which does not require oil to ignite pulverized coal, which can greatly reduce operating costs and solve the problems existing in the prior art.
  • a pulverized coal furnace comprising an outer furnace body, an intermediate furnace body being installed in the outer furnace body, a cooling air chamber being formed between the intermediate furnace body and the outer furnace body; and an inner furnace is installed in the intermediate furnace body Body, the inner furnace body is located at the rear part of the intermediate furnace body, that is, the inner furnace body and the intermediate furnace body partially overlap, and a plurality of pulverized coal pipes are installed between the intermediate furnace body and the inner furnace body, and any two adjacent pulverized coal pipes are formed.
  • a secondary air duct a refractory brick layer in a high temperature zone is arranged on the inner wall of the inner furnace; a flammable special layer of the combustion chamber is arranged on the inner wall of the non-overlapping part of the middle furnace body and the inner furnace body, and the refractory special layer of the combustion chamber or the refractory brick layer of the high temperature area
  • a secondary air outlet is provided, and the secondary air outlet is connected with the secondary air duct;
  • a wind air supply port is arranged on the inner furnace body, a high temperature area coal powder pipe is installed on the inner furnace body, and the high temperature area coal powder tube is worn out.
  • an igniter is installed in the pulverized coal pipe in the high temperature zone; the refractory brick layer in the high temperature zone is surrounded by a high temperature cavity, and the refractory layer of the combustion cavity encloses a combustion cavity; the discharge port of the pulverized coal pipe is bent inward and is located in the high temperature cavity;
  • the secondary air outlet is connected to the high temperature chamber or the combustion chamber, Secondary air supply outlet in communication with the high-temperature chamber; chamber cooling air, primary air and secondary air damper Road air outlet are in communication with the source of air, the pulverized coal pulverized coal pipe and the high-temperature region are in communication with the coal pipe source.
  • a plurality of support rods are installed between the intermediate furnace body and the outer furnace body, and the intermediate furnace body and the outer furnace body are connected by a support rod.
  • a third annular baffle is installed on the outer circumference of the outer furnace body, and the third annular baffle, the outer furnace body and the intermediate furnace body are connected to form a cooling air chamber, and a cooling air inlet port is opened on the side wall of the outer furnace body, and the cooling air inlet and cooling are provided.
  • the wind chambers are connected.
  • One end of the inner furnace body is located in the middle furnace body, and the other end of the inner furnace body is located outside the intermediate furnace body, and a second annular partition plate is installed on the outer circumference of the inner furnace body, and the second annular partition plate is located outside the intermediate furnace body, and the second annular partition plate.
  • the three annular baffles, the outer furnace body and the inner furnace body are connected to form a secondary air chamber, and the secondary air chamber is connected with the secondary air duct; the secondary air inlet is opened on the side wall of the outer furnace body, and the secondary air inlet is opened. Connected to the secondary air chamber.
  • the first annular baffle is installed on the outer circumference of the inner furnace body, the first annular baffle is located outside the intermediate furnace body, and the first annular baffle, the second annular baffle and the outer furnace body are connected to form a pulverized coal chamber, the pulverized coal chamber and the pulverized coal
  • the feeding end of the pipe is connected; the side wall of the outer furnace body is provided with a coal powder mouth for communicating with the coal powder cavity.
  • the first annular baffle, the inner furnace body and the outer furnace body constitute a primary air chamber, the primary air chamber is connected with the primary air supply port; the wind inlet of the outer furnace body is provided with a wind inlet, the primary air inlet and the primary air.
  • the wind chambers are connected.
  • the present invention has the advantage that it has a constant temperature high temperature zone at the rear of the furnace body, and the high temperature zone maintains its constant temperature by continuous injection of pulverized coal.
  • the temperature in the high temperature zone is kept above the ignition point of the pulverized coal, which ensures that the pulverized coal injected into the furnace body is fully burned, and the requirements for air supply control are lower, and the operation is simpler.
  • its structure is simple, and the air supply and coal feeding powders do not overlap each other, and the layers are distinct, which can greatly reduce the volume of the pulverized coal furnace and reduce the production difficulty and cost.
  • FIG. 1 is a schematic structural view of the present invention
  • FIG. 2 is a cross-sectional structural view taken along line A-A of FIG.
  • the pulverized coal furnace according to the present invention comprises an outer furnace body 3, an intermediate furnace body 5 is installed in the outer furnace body 3, a cooling air chamber 4 is formed between the intermediate furnace body 5 and the outer furnace body 3, and the intermediate furnace body 5 is installed inside.
  • the furnace body 22, the inner furnace body 22 is located at the rear part of the intermediate furnace body 5, that is, the inner furnace body 22 partially overlaps the intermediate furnace body 5.
  • the rear part of the pulverized coal furnace is composed of the outer furnace body 3 and the intermediate furnace.
  • the body 5 and the inner furnace body 22 are composed of a three-layer furnace body, and the front portion thereof is composed only of the outer furnace body 3 and the intermediate furnace body 5.
  • a plurality of pulverized coal pipes 6 are installed between the intermediate furnace body 5 and the inner furnace body 22, and two adjacent pulverized coal pipes 6 constitute a secondary air duct 21, and the pulverized coal pipes 6 are disposed in the inner furnace body 22 and the intermediate furnace.
  • the body 5 plays a supporting role; as shown in FIG. 1 , a high temperature zone refractory brick layer 7 is disposed on the inner wall of the inner furnace body 22, and a combustion chamber refractory layer 2 is disposed on the inner wall of the non-overlapping portion of the intermediate furnace body 5 and the inner furnace body 22.
  • a secondary air outlet 25 is formed on the refractory layer 2 of the combustion chamber or the refractory brick layer 7 in the high temperature region, and the secondary air outlet 25 communicates with the secondary air duct 21;
  • a wind air supply port 24 is provided on the inner furnace body 22, In order to facilitate the supply of air to the primary air supply port 24, as shown in FIG.
  • the primary air supply port 24 is generally opened at the rear of the inner furnace body 22; the inner furnace body 22 is provided with a high temperature area pulverized coal pipe 13, and the high temperature area pulverized coal pipe 13 outside the outer furnace body 3, the igniter 14 is installed in the pulverized coal pipe 13 in the high temperature zone; the refractory brick layer 7 in the high temperature zone is surrounded by the high temperature chamber 19, and the combustion chamber refractory layer 2 encloses the combustion chamber 1, the combustion chamber 1 and the high temperature The chamber 19 is in communication; as shown in FIG.
  • the discharge port of the pulverized coal tube 6 is bent inward and located in the high temperature chamber 19;
  • the tuyere 25 communicates with the high temperature chamber 19 or the combustion chamber 1, and the primary air supply port 24 communicates with the high temperature chamber 19;
  • the cooling air chamber 4, the secondary air duct 21 and the primary air supply port 24 are all connected to the wind source, and the pulverized coal tube 6
  • the pulverized coal pipe 13 in the high temperature zone is connected to the pulverized coal source.
  • the combustion chamber refractory layer 2 and the high temperature region refractory brick layer 7 can be connected together.
  • the secondary air duct 21 and the primary air supply port 24, and the wind in the cooling air chamber 4 acts to cool the furnace body, and the secondary air duct 21 is made of pulverized coal.
  • the coal powder sprayed into the furnace body of the tube 6 serves as a combustion aid, and the wind in the primary air supply port 24 contributes to the combustion of the coal powder injected from the high temperature pulverized coal pipe 13.
  • the mixture of pulverized coal and air injected from the pulverized coal pipe 13 in the high temperature zone is burned by the igniter 14 and then fully burned in the high temperature chamber 19 to ensure that the temperature in the high temperature chamber 19 is always above the ignition point of the pulverized coal.
  • the pulverized coal furnace relies on the constant high temperature of the high temperature chamber 19 to ensure that the pulverized coal injected into the furnace body by the pulverized coal pipe 6 spontaneously ignites and fully sustains combustion, and has operating cost compared with the pulverized coal furnace which uses oil to ignite the pulverized coal. Low and stable combustion advantages.
  • the air in the pulverized coal pipe 13 in the high temperature zone is a carrier for transporting pulverized coal.
  • a plurality of support rods 20 are installed between the intermediate furnace body 5 and the outer furnace body 3.
  • the intermediate furnace body 5 and the outer furnace body 3 are connected by a support rod 20, and the support rod 20 is opposed to the intermediate furnace body 5 and the outer furnace.
  • the body 3 serves as a support to ensure that the cooling air chamber 4 is unobstructed.
  • a third annular partition 18 is attached to the outer periphery of the outer furnace body 3.
  • the third annular partition 18, the outer furnace body 3 and the intermediate furnace body 5 are connected to form a cooling air chamber 4, and the side wall of the outer furnace body 3
  • a cooling air inlet 8 is opened, and the cooling air inlet 8 communicates with the cooling air chamber 4.
  • the outer furnace body 3, the intermediate furnace body 5 and the third annular partition plate 18 may also be integrally formed, that is, the side wall is provided with a double-layer furnace body for cooling the air chamber 4.
  • the cooling air inlet 8 is connected to the air blowing device, and is blown into the cooling air chamber 4 from the cooling air inlet 8 .
  • one end of the inner furnace body 22 is located in the intermediate furnace body 5, the other end of the inner furnace body 22 is located outside the intermediate furnace body 5, and the outer circumference of the inner furnace body 22 is provided with a second annular partition plate 17, a second ring
  • the partition plate 17 is located outside the intermediate furnace body 5, and the second annular partition plate 17, the third annular partition plate 18, the outer furnace body 3 and the inner furnace body 22 are connected to form a secondary air chamber 26, and the secondary air chamber 26 and the second
  • the secondary air duct 21 communicates; the secondary air inlet 9 is formed on the side wall of the outer furnace body 3, and the secondary air inlet 9 communicates with the secondary air chamber 26.
  • the secondary air inlet 9 is connected to the air supply device, and the wind is sent from the secondary air inlet 9 into the secondary air chamber 26, and then the secondary air chamber 26 is divided into the secondary air ducts 21, and finally Each of the secondary air outlets 25 uniformly supplies air into the combustion chamber 1, so that the wind and the coal powder are sufficiently mixed, thereby improving the air blowing effect and making the pulverized coal combustion more fully.
  • a first annular partition 15 is installed on the outer circumference of the inner furnace body 22.
  • the first annular partition 15 is located outside the intermediate furnace body 5, and the first annular partition 15, the second annular partition 17 and the outer furnace body. 3 is connected to form a pulverized coal chamber 16, and the pulverized coal chamber 16 is connected to the feeding end of the pulverized coal tube 6; the pulverized coal port 10 is opened on the side wall of the outer furnace body 3, and the pulverized coal port 10 is communicated with the pulverized coal chamber 16.
  • the pulverized coal can enter the pulverized coal chamber 16 through the pulverized coal port 10, and the pulverized coal chamber 16 divides the pulverized coal evenly into the pulverized coal tubes 6, and then the pulverized coal tubes 6 are sprayed into the furnace body.
  • the above method of spraying coal powder can uniformly disperse the pulverized coal furnace body, and ensure that the coal powder and the air are effectively mixed and fully burned.
  • the pulverized coal entering the high temperature chamber 19 from the high temperature pulverized coal pipe 13 is sufficiently burned to keep the high temperature in the high temperature chamber 19 constant, as shown in Fig. 1, the first annular partition 15.
  • the inner furnace body 22 and the outer furnace body 3 constitute a primary air chamber 12, and the primary air chamber 12 communicates with the primary air supply port 24; the outer side of the outer furnace body 3 has a primary air inlet 11 and a primary air inlet. 11 communicates with the primary air chamber 12.
  • the paths connecting the internal cooling air chamber 4, the secondary air chamber 26, the pulverized coal chamber 16 and the primary air chamber 12 to the external air blowing device and the coal feeding device are not intersected with each other.
  • the structure of the air supply and the coal feeding powder is clearly defined and concise, and the volume of the pulverized coal furnace can be greatly reduced, thereby reducing the manufacturing difficulty and the production cost.
  • the primary air, the secondary air and the cooling air according to the present invention are the winds generated by the air blower by the air blower, and are respectively named and distinguished for convenience of description.

Description

煤粉炉 技术领域
本发明涉及一种煤粉炉。
背景技术
目前，现有的煤粉炉都需要引燃。
 技术问题
现有的煤粉炉存在以下缺陷：第一、以燃烧油的方式引燃煤粉，运行成本过高，而且，以油引燃煤粉对煤粉的助燃风的送风要求过高，若送风量小则会使煤粉无法充分燃烧，若送风量大，则会将炉内的炉火熄灭，因此，操控难度较大；第二、结构复杂体积较大，生产成本较高。上述的缺陷直接影响煤粉炉的推广应用。
技术解决方案
本发明的目的是提供一种煤粉炉，它体积小、结构简洁，生产成本较低，而且，它无须用油引燃煤粉，可大幅降低运行成本，解决现有技术存在的问题。
本发明为实现上述目的，通过以下技术方案实现：煤粉炉，包括外炉体，外炉体内安装中间炉体，中间炉体与外炉体之间构成冷却风腔；中间炉体内安装内炉体，内炉体位于中间炉体的后部，即内炉体与中间炉体部分重叠，中间炉体与内炉体之间安装数根煤粉管，任两根相邻煤粉管间构成一条二次风风道；内炉体内壁上设置高温区耐火砖层，中间炉体与内炉体非重叠部分的内壁上设置燃烧腔耐火专层，燃烧腔耐火专层或高温区耐火砖层上开设二次风出风口，二次风出风口与二次风风道相通；内炉体上开设一次风送风口，内炉体上安装高温区煤粉管，高温区煤粉管穿出外炉体外，高温区煤粉管内安装点火器；高温区耐火砖层围成高温腔，燃烧腔耐火专层围成燃烧腔；煤粉管的出料口向内弯折，且位于高温腔内；二次风出风口与高温腔或燃烧腔相通，一次风送风口与高温腔相通；冷却风腔、二次风风道和一次风送风口均与风源相通，煤粉管和高温区煤粉管均与煤粉源相通。
为了进一步实现本发明的目的，还可以采用以下技术方案：中间炉体与外炉体之间安装数根支撑杆，中间炉体与外炉体通过支撑杆连接。外炉体的外周安装第三环形隔板，第三环形隔板、外炉体和中间炉体连接构成冷却风腔，外炉体的侧壁上开设冷却风进风口，冷却风进风口与冷却风腔相通。内炉体的一端位于中间炉体内，内炉体的另一端位于中间炉体外，内炉体的外周安装第二环形隔板，第二环形隔板位于中间炉体外，第二环形隔板、第三环形隔板、外炉体和内炉体连接构成二次风风腔，二次风风腔与二次风风道相通；外炉体的侧壁上开设二次风进口，二次风进口与二次风风腔相通。内炉体的外周安装第一环形隔板，第一环形隔板位于中间炉体外侧，第一环形隔板、第二环形隔板和外炉体连接构成煤粉腔，煤粉腔与煤粉管的进料端联通；外炉体的侧壁上开设供煤粉口，供煤粉口与煤粉腔相通。第一环形隔板、内炉体和外炉体构成一次风风腔，一次风风腔与一次风送风口相通；外炉体的侧壁上开设一次风进风口，一次风进风口与一次风风腔相通。
 有益效果
本发明的优点在于：它炉体后部有一个温度恒定的高温区，高温区由不断喷入的煤粉燃烧维持其恒定的温度。高温区的温度始保持在煤粉的燃点以上，可确保喷入炉体内的煤粉充分燃烧，且对送风操控要求较低，操作更简便。另外，它的结构简洁，各送风和送煤粉环节互不重叠，层次分明，可大幅缩小煤粉炉的体积，降低生产难度和成本。
 附图说明
图1是本发明的结构示意图；图2是沿图1中A-A线的剖视结构示意图。
附图标记：1燃烧腔　2燃烧腔耐火砖层　3外炉体　4冷却风腔　5中间炉体　6煤粉管　7高温区耐火砖层　8冷却风进风口　9二次风进口　10供煤粉口　11一次风进风口　12一次风风腔　13高温区煤粉管　14点火器　15第一环形隔板　16煤粉腔　17第二环形隔板　18第三环形隔板　19高温腔　20支撑杆　21二次风风道　22内炉体　24一次风送风口　25二次风出风口　26二次风风腔。
 本发明的最佳实施方式
本发明所述的煤粉炉，包括外炉体3，外炉体3内安装中间炉体5，中间炉体5与外炉体3之间构成冷却风腔4；中间炉体5内安装内炉体22，内炉体22位于中间炉体5的后部，即内炉体22与中间炉体5部分重叠，从横断面上看，煤粉炉的后部由外炉体3、中间炉体5和内炉体22三层炉体构成，而其前部仅由外炉体3和中间炉体5构成。中间炉体5与内炉体22之间安装数根煤粉管6，任两根相邻煤粉管6间构成一条二次风风道21，煤粉管6在内炉体22和中间炉体5之间起支撑作用；如图1所示，内炉体22内壁上设置高温区耐火砖层7，中间炉体5与内炉体22非重叠部分的内壁上设置燃烧腔耐火专层2，燃烧腔耐火专层2或高温区耐火砖层7上开设二次风出风口25，二次风出风口25与二次风风道21相通；内炉体22上开设一次风送风口24，为方便向一次风送风口24送风，如图1所示，一次风送风口24通常开设于内炉体22后部；内炉体22上安装高温区煤粉管13，高温区煤粉管13穿出外炉体3外，高温区煤粉管13内安装点火器14；高温区耐火砖层7围成高温腔19，燃烧腔耐火专层2围成燃烧腔1，燃烧腔1与高温腔19相通；如图1所示，为便于煤粉喷至高温腔19处充分引燃，煤粉管6的出料口向内弯折，且位于高温腔19内；二次风出风口25与高温腔19或燃烧腔1相通，一次风送风口24与高温腔19相通；冷却风腔4、二次风风道21和一次风送风口24均与风源相通，煤粉管6和高温区煤粉管13均与煤粉源相通。为方便加工制造，燃烧腔耐火专层2与高温区耐火砖层7可连接于一体。
使用时，向冷却风腔4、二次风风道21和一次风送风口24内送风，冷却风腔4内的风对炉体起降温保护作用，二次风风道21对由煤粉管6喷入炉体内的煤粉起助燃作用，一次风送风口24内的风对由高温区煤粉管13喷入的煤粉起助燃作用。由高温区煤粉管13喷入的煤粉和空气的混合物经点火器14点烧后，会在高温腔19内充分燃烧，以确保高温腔19内的温度始终在煤粉的燃点以上，从而可保证由煤粉管6内喷入的煤粉可在高温腔19的高温作用下充分燃烧。所述的煤粉炉是依靠高温腔19的恒定高温确保由煤粉管6喷入炉体内的煤粉自燃并充分持续燃烧，与用油引燃煤粉的煤粉炉相比，具有运行成本低和燃烧稳定的优点。高温区煤粉管13内空气是运送煤粉的载体。
本发明的实施方式
如图2所示，中间炉体5与外炉体3之间安装数根支撑杆20，中间炉体5与外炉体3通过支撑杆20连接，支撑杆20对中间炉体5和外炉体3起支撑作用，确保冷却风腔4畅通。
如图1所示，外炉体3的外周安装第三环形隔板18，第三环形隔板18、外炉体3和中间炉体5连接构成冷却风腔4，外炉体3的侧壁上开设冷却风进风口8，冷却风进风口8与冷却风腔4相通。外炉体3、中间炉体5和第三环形隔板18也可制成一体，即侧壁设有冷却风腔4的双层炉体。冷却风进风口8与送风装置连接，由冷却风进风口8处向冷却风腔4内送风。
如图1所示，内炉体22的一端位于中间炉体5内，内炉体22的另一端位于中间炉体5外，内炉体22的外周安装第二环形隔板17，第二环形隔板17位于中间炉体5外，第二环形隔板17、第三环形隔板18、外炉体3和内炉体22连接构成二次风风腔26，二次风风腔26与二次风风道21相通；外炉体3的侧壁上开设二次风进口9，二次风进口9与二次风风腔26相通。二次风进口9与送风装置连接，风由二次风进口9送入二次风风腔26内，再由二次风风腔26分至各根二次风风道21内，最后由各二次风出风口25向燃烧腔1内均匀送风，使风与煤粉充分混合，可提高送风效果，使煤粉燃烧更加充分。
如图1所示，内炉体22的外周安装第一环形隔板15，第一环形隔板15位于中间炉体5外侧，第一环形隔板15、第二环形隔板17和外炉体3连接构成煤粉腔16，煤粉腔16与煤粉管6的进料端联通；外炉体3的侧壁上开设供煤粉口10，供煤粉口10与煤粉腔16相通。煤粉可经供煤粉口10进入煤粉腔16，煤粉腔16将煤粉均匀分至各煤粉管6内，再由煤粉管6喷入炉体内。上述喷煤粉的方式可使煤粉炉体内分散均匀，确保煤粉与空气有效混合充分燃烧。
为了便于向高温腔19内送风，使由高温区煤粉管13内进入高温腔19的煤粉充分燃烧，以便保持高温腔19内的高温恒定，如图1所示，第一环形隔板15、内炉体22和外炉体3构成一次风风腔12，一次风风腔12与一次风送风口24相通；外炉体3的侧壁上开设一次风进风口11，一次风进风口11与一次风风腔12相通。
本发明所述的煤粉炉，其内部冷却风腔4、二次风风腔26、煤粉腔16和一次风风腔12与外界送风装置和送煤粉装置连接的路径相互间无交叉重叠部分，送风、送煤粉的结构层次清楚分明、简洁，可大幅缩小煤粉炉的体积，从而降低加工制造难度和生产成本。
本发明所述的一次风、二次风、冷却风均是由鼓风机使空气流动产生的风，是为方便描述而分别命名加以区分。
本发明未详尽描述的部分均为公知技术。

Claims (6)

1、煤粉炉，其特征在于：包括外炉体（3），外炉体（3）内安装中间炉体（5），中间炉体（5）与外炉体（3）之间构成冷却风腔（4）；中间炉体（5）内安装内炉体（22），内炉体（22）位于中间炉体（5）的后部，即内炉体（22）与中间炉体（5）部分重叠，中间炉体（5）与内炉体（22）之间安装数根煤粉管（6），任两根相邻煤粉管（6）间构成一条二次风风道（21）；内炉体（22）内壁上设置高温区耐火砖层（7），中间炉体（5）与内炉体（22）非重叠部分的内壁上设置燃烧腔耐火专层（2），燃烧腔耐火专层（2）或高温区耐火砖层（7）上开设二次风出风口（25），二次风出风口（25）与二次风风道（21）相通；内炉体（22）上开设一次风送风口（24），内炉体（22）上安装高温区煤粉管（13），高温区煤粉管（13）穿出外炉体（3）外，高温区煤粉管（13）内安装点火器（14）；高温区耐火砖层（7）围成高温腔（19），燃烧腔耐火专层（2）围成燃烧腔（1）；煤粉管（6）的出料口向内弯折，且位于高温腔（19）内；二次风出风口（25）与高温腔（19）或燃烧腔（1）相通，一次风送风口（24）与高温腔（19）相通；冷却风腔（4）、二次风风道（21）和一次风送风口（24）均与风源相通，煤粉管（6）和高温区煤粉管（13）均与煤粉源相通。
2、根据权利要求1所述的煤粉炉，其特征在于：中间炉体（5）与外炉体（3）之间安装数根支撑杆（20），中间炉体（5）与外炉体（3）通过支撑杆（20）连接。
3、根据权利要求1所述的煤粉炉，其特征在于：外炉体（3）的外周安装第三环形隔板（18），第三环形隔板（18）、外炉体（3）和中间炉体（5）连接构成冷却风腔（4），外炉体（3）的侧壁上开设冷却风进风口（8），冷却风进风口（8）与冷却风腔（4）相通。
4、根据权利要求3所述的煤粉炉，其特征在于： 内炉体（22）的一端位于中间炉体（5）内，内炉体（22）的另一端位于中间炉体（5）外，内炉体（22）的外周安装第二环形隔板（17），第二环形隔板（17）位于中间炉体（5）外，第二环形隔板（17）、第三环形隔板（18）、外炉体（3）和内炉体（22）连接构成二次风风腔（26），二次风风腔（26）与二次风风道（21）相通；外炉体（3）的侧壁上开设二次风进口（9），二次风进口（9）与二次风风腔（26）相通。
5、根据权利要求4所述的煤粉炉，其特征在于：内炉体（22）的外周安装第一环形隔板（15），第一环形隔板（15）位于中间炉体（5）外侧，第一环形隔板（15）、第二环形隔板（17）和外炉体（3）连接构成煤粉腔（16），煤粉腔（16）与煤粉管（6）的进料端联通；外炉体（3）的侧壁上开设供煤粉口（10），供煤粉口（10）与煤粉腔（16）相通。
6、根据权利要求5所述的煤粉炉，其特征在于：第一环形隔板（15）、内炉体（22）和外炉体（3）构成一次风风腔（12），一次风风腔（12）与一次风送风口（24）相通；外炉体（3）的侧壁上开设一次风进风口（11），一次风进风口（11）与一次风风腔（12）相通。
PCT/CN2011/079594 2010-12-28 2011-09-14 煤粉炉 WO2012088927A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201020684551.1 2010-12-28
CN2010206845511U CN201964396U (zh) 2010-12-28 2010-12-28 煤粉炉

Publications (1)

Publication Number Publication Date
WO2012088927A1 true WO2012088927A1 (zh) 2012-07-05

Family

ID=44526937

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2011/079594 WO2012088927A1 (zh) 2010-12-28 2011-09-14 煤粉炉

Country Status (2)

Country Link
CN (1) CN201964396U (zh)
WO (1) WO2012088927A1 (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201964396U (zh) * 2010-12-28 2011-09-07 张友晶 煤粉炉
CN104019645A (zh) * 2013-03-01 2014-09-03 郎溪县恒云工程机械有限公司 煤粉炉
CN103322556B (zh) * 2013-05-20 2015-11-18 河南陆德筑机股份有限公司 一种粉煤燃烧器

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4630554A (en) * 1982-05-14 1986-12-23 T.A.S., Inc. Pulverized solid fuel burner and method of firing pulverized fuel
CN1008473B (zh) * 1986-06-05 1990-06-20 上海市第二工业大学 螺锥状旋风式燃烧器
JP2007309607A (ja) * 2006-05-19 2007-11-29 Ihi Corp 微粉炭燃焼用バーナ装置
CN201190993Y (zh) * 2008-02-22 2009-02-04 沈阳大学 一种中小型锅炉煤粉燃烧装置
CN201293314Y (zh) * 2008-07-28 2009-08-19 上海题桥纺织染纱有限公司 低NOx液态排渣双旋流煤粉燃烧器
CN201964396U (zh) * 2010-12-28 2011-09-07 张友晶 煤粉炉

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4630554A (en) * 1982-05-14 1986-12-23 T.A.S., Inc. Pulverized solid fuel burner and method of firing pulverized fuel
CN1008473B (zh) * 1986-06-05 1990-06-20 上海市第二工业大学 螺锥状旋风式燃烧器
JP2007309607A (ja) * 2006-05-19 2007-11-29 Ihi Corp 微粉炭燃焼用バーナ装置
CN201190993Y (zh) * 2008-02-22 2009-02-04 沈阳大学 一种中小型锅炉煤粉燃烧装置
CN201293314Y (zh) * 2008-07-28 2009-08-19 上海题桥纺织染纱有限公司 低NOx液态排渣双旋流煤粉燃烧器
CN201964396U (zh) * 2010-12-28 2011-09-07 张友晶 煤粉炉

Also Published As

Publication number Publication date
CN201964396U (zh) 2011-09-07

Similar Documents

Publication Publication Date Title
CN201575462U (zh) 回转窑用煤粉和气体燃料混烧燃烧器
CN102230726B (zh) 套筒式连续煅烧竖窑
WO2012088927A1 (zh) 煤粉炉
CN202204270U (zh) 一种套筒式连续煅烧竖窑
CN109175339B (zh) 一种双助燃通道烟气内循环式钢包烘烤器
CN108916865A (zh) 一种低氮燃气燃烧器
CN104990256B (zh) 一种环保锅炉
CN207112818U (zh) 多燃料低NOx燃烧器
CN203501758U (zh) 一种内置生物质成型燃料燃烧室的坩埚炉
CN206112907U (zh) 一种燃气工业锅炉燃烧装置
CN108061299A (zh) 一种L型高效换热低Nox燃烧器
CN208859595U (zh) 一种低氮燃气燃烧器
CN206001454U (zh) 一种煤粉燃烧器
CN208475327U (zh) 一种余热锅炉用燃烧器
CN201062792Y (zh) 一种应用于水泥窑炉的节油煤粉燃烧器
CN208431759U (zh) 一种多通道组合式烧嘴
CN102944014A (zh) 工业锅炉燃烧器及具有其的工业锅炉
ITBO20120436A1 (it) Apparecchiatura di combustione a recupero di calore in particolare per forni ceramici
CN105953225A (zh) 一种煤粉燃烧器
CN202836174U (zh) 多功能可伸缩窑炉燃烧器
CN208431760U (zh) 一种具有防护功能的烧嘴
CN202149683U (zh) 一种套筒式气烧竖窑
CN210150727U (zh) 一种焚硫系统
CN205313405U (zh) 外置燃烧蓄热式石灰竖窑的煅烧设备
CN203162953U (zh) 液压调节预混式二次燃气烧嘴

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11853157

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 03/09/2013)

122 Ep: pct application non-entry in european phase

Ref document number: 11853157

Country of ref document: EP

Kind code of ref document: A1