CN2661653Y - Concentrated phase pulverized coal distributor - Google Patents
Concentrated phase pulverized coal distributor Download PDFInfo
- Publication number
- CN2661653Y CN2661653Y CN 200320111261 CN200320111261U CN2661653Y CN 2661653 Y CN2661653 Y CN 2661653Y CN 200320111261 CN200320111261 CN 200320111261 CN 200320111261 U CN200320111261 U CN 200320111261U CN 2661653 Y CN2661653 Y CN 2661653Y
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- CN
- China
- Prior art keywords
- distributing box
- coal
- distributor
- water conservancy
- pulverized coal
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Abstract
The utility model relates to a special distributor for enrich coal powder conveying, which is characterized in that the inlet of the distributor is connected with a general coal conduit. A guide silo with bottom hopper can convey the coal powder to the inlet of each branch of the main distributor. Through the inter-connecting access of the main body of the distributor, coal powder is introduced to each air inlet of the furnace. In the process of enrich coal powder flow distribution, the flow direction discontinuity and backswing resistance are not occurred. The utility model is a special equipment for the enrich coal powder conveying and distribution.
Description
Technical field
The utility model is to the improvement of blast-furnace coal powder delivery system isolated plant pulverized coal distributor structure, is particularly suitable for the transmission system for dense phase pulverized coal.
Background technology
Blast furnace fuel is taked fine coal strength transmission technology, substitutes traditional coke with part, is reasonable energy utilization, and effective measures that reduce production costs are strategic technical measures of taking in China's steel and iron industry.Come into one's own day by day at present and development very fast.The blast furnace PCI technology technology of being taked at present is divided into two kinds.A kind of for draw the multichannel arm from the winding-up jar, every road links to each other with an air port of blast furnace; Another kind of for the pulverized coal distributor of drawing a paramount stokehold of coal dust house steward from the winding-up jar links to each other, draw a plurality of coal dust arms from distributing box again and link to each other with each air port of blast furnace.The process program that adds distributing box with house steward under the restriction of present operating mode and various conditions is the prioritization scheme of generally acknowledging.
Angle from the transmission of coal dust gas phase.The index of its coal dust pneumatic conveying of transmission system that does not have fluidizer is about 10kg coal dust/kg gas.Generally be referred to as dilute phase transport.The dilute phase transport ability, air consumption is big, the cost height.Require under the certain situation of injecting coal quantity that flow velocity is fast, pressure is big, serious wear.Take fluidized bed plant later on the solid-gas ratio of transmission can reach 30kg coal dust/more than the kg gas, thereby can overcome the harm and the shortcoming of dilute phase transport greatly.Yet improved breeze airflow concentration its flowing power variation later on.Existing pulverized coal distributor only can be adapted to dilute phase, such as the distributing box of bottle formula, disc type, bevel-type, in its main distributor structure, enter the mouth with coal dust house steward bonded assembly, cause the air flow line angle mostly to be the right angle with each the branch road exit position on the main body, and do not have transition region.The variable gradient at transmission direction angle is excessive, even with the eddy flow that reverse impact forms, makes that the transport resistance of dense phase pulverized coal is excessive, even cause obstruction.Existing pulverized coal distributor incompatibility concentrated phase fully transmits and anxious treating in improvement.
Summary of the invention
The purpose of this utility model provides a kind of structure design of new dense phase pulverized coal distributing box, makes it that dense phase pulverized coal stream is reduced to minimum level at the resistance that is produced in the process of each branch road shunting.
Design key of the present utility model has a transient process when being to make the transmission direction angle of dense phase pulverized coal stream in the shunting process to change.Make in the process of its shunting and more effectively utilize aerodynamic force, and can not produce structural drag.
According to above imagination, the utility model spy takes following design plan.The outlet that links to each other with each by path of blast furnace on the main distributor between the inlet that enters main distributor that defeated coal house steward links to each other, adds a water conservancy diversion storehouse.Make the dense phase pulverized coal that enters the water conservancy diversion storehouse under the guiding of the deflection cone that is provided with on the axle center, water conservancy diversion storehouse, it flows to beginning and forms deflection gradually, arrive then above the water conservancy diversion storehouse, and each way outlet extends downwards by being arranged on main distributor in-to-in path, and shrinks and to come together between inlet and main body above the water conservancy diversion storehouse.The dense phase pulverized coal that arrives like this above the water conservancy diversion storehouse flows to each way outlet by the distribution of inner gateway guiding once more, flows to each air port of blast furnace by each by path that links to each other with a way outlet again.In fact through the dense phase pulverized coal process buffer-type guiding drainage of distributing box, can fundamentally change fluid and turn to the too fast choking phenomenon that causes of the excessive rotating speed of variation, give full play of the advantage of concentrated phase transmission.
How further specify the purpose of this utility model below in conjunction with accompanying drawing realizes.
Description of drawings
Fig. 1 is a structural representation of the present utility model
Fig. 2 is that the A-A of Fig. 1 is to view
Wherein 1 is main distributor, and 1A is the branch road internal path, and 1B is the frustum cone side that be processed into the main body upper end.2 are a way outlet, and 2A is a by path, and 3 are the dense phase pulverized coal inlet, and 3A is a flange, and 4 is the water conservancy diversion storehouse, and 5 is deflection cone.
The specific embodiment
What be that the main body of dilute phase pulverized coal distributor adopts with one of the difference of dilute phase pulverized coal distributor design is cavity structure.And the utility model is taked is entity structure.In solid type main body 1, process shunting forehearth limb 1A.Main body 1 adopts cylinder or upper surface to be processed into the cylinder of frustum cone side 1B.The reason that is processed as frustum cone side 1B is technologic needs when considering processing inner gateway 1A.At this moment the outlet 2 of each diverter branch just is evenly distributed on the frustum cone side 1B, and each interior bypass passage 1A then even (being symmetrical in main body 1 axis) is distributed in main body 1 inside.
Water conservancy diversion storehouse 4 is one of characteristic Design of this distributing box.It is round table-like that it is cavity, is arranged between main body 1 and the dense phase pulverized coal inlet 3.Captiveing joint with main body 1 in its upper surface, captives joint with inlet 3 in its lower surface.Cavity is communicated with inlet 3 and enters the mouth with the diverter branch that the internal channel 1A of branch comes together in main body 1 lower end (being 3 upper ends, water conservancy diversion storehouse).And in cavity, be provided with the turbination deflection cone 5 of a coaxial line.The bottom surface of this deflection cone 5 is fixedly connected on the lower surface of main body 1, forms in the cavity in conical bottom and water conservancy diversion storehouse 3 diverter branch that rectangular distribution between the circle is contracted in the branch road inner passage 1A in this zone and enters the mouth.
Make things convenient for dense phase pulverized coal inlet 3 to be provided with a flange 3A in order to use, inlet 3 upper surfaces of pipe shape are communicated with location, the lower end in water conservancy diversion storehouse 4.Dense phase pulverized coal 3 enters back, water conservancy diversion storehouse 4 flows to each the branch road internal path 1A that comes together in the main body lower surface respectively under the shuntings guiding of deflection cone 5 inlets from entering the mouth like this, outlet 2 from the main body upper surface enters bypass line 2A then, the all processes dense phase pulverized coal flows to and does not produce sudden change, because oppositely the turbulence effect of impulse force formation can be eliminated at all, thereby prevented obstruction, aerodynamic force is reduced greatly, and the effective transmission rating of coal dust obviously increases, bring into play fluid bed the back system advantage has been set, helped the decline of operation of blast furnace cost.
By path 2A with the outlet on take the cut welding manner to be connected.The connection mode that each structure member adopts can take to shape the back welding, also can utilize added thread to connect, or the captive joint mode of interference fit.Path 1A in the main body 1 can be one section straight line pipeline that a brill processes, the pipeline that also can take correct taper hole processes to become two sections broken lines to form, but the angle of cut of two sections straight lines should be less than 160 °, to reduce resistance.
The distributing box of more than making for the transmission of the dense phase pulverized coal more than the per kilogram gas 30kg, shunt unobstructedly through in-place test proof, and aerodynamic force consumption is few, and can replace existing distributing box fully becomes the special-purpose assorted equipment that dense phase pulverized coal is transmitted.
Claims (8)
1, dense phase pulverized coal distributing box, main distributor (1) is provided with inlet (3) that links to each other with defeated coal house steward and the outlet (2) that links to each other with each defeated coal by path of blast furnace, it is characterized in that each by path outlet (2) by being arranged at downward the contraction above the water conservancy diversion storehouse (4) that comes together between inlet (3) and the main body (1) of path (A) in the main distributor (1), is provided with deflection cone (5) on the diad position of water conservancy diversion storehouse (4).
2, according to the said distributing box of claim 1, it is characterized in that main distributor (1) is processed as the cylinder of frustum cone side (1B) for cylinder or upper surface, each branch line outlet (2) be evenly distributed on the upper surface or the frustum cone side (1B) that processes on, be symmetrical in main body (1) axis rectangular distribution with cooresponding each inner gateway of each way outlet (2) (1A).
3, according to the said distributing box of claim 1, it is characterized in that water conservancy diversion storehouse (4) is that cavity is round table-like, captive joint below main distributor (1) in its upper surface, and captive joint with distributing box coal powder entrance (3) in its lower surface.
4, according to the said distributing box of claim 1, it is characterized in that deflection cone (5) is turbination, its bottom surface was fixedly connected on main distributor (1) following.
5, according to the said distributing box of claim 1, it is characterized in that dense phase pulverized coal inlet (3) is the round tube shape structure of a flanged dish (3A), the lower surface counterpart of its upper port and water conservancy diversion storehouse (4) is located by connecting.
6,, it is characterized in that the forehearth limb (1 A) in the main distributor (1) is one section straight line pipeline, or two sections pipelines become polyline shaped according to the said distributing box of claim 1.
7,, it is characterized in that the set coal dust of distributing box props up in way outlet (2) and the main body cooresponding inner gateway (1A) more than 2 according to the said distributing box of claim 1.
8,, it is characterized in that the connection mode that fine coal props up way outlet (2) and outer by path (2A) is that cut welds according to the said distributing box of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320111261 CN2661653Y (en) | 2003-11-21 | 2003-11-21 | Concentrated phase pulverized coal distributor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320111261 CN2661653Y (en) | 2003-11-21 | 2003-11-21 | Concentrated phase pulverized coal distributor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2661653Y true CN2661653Y (en) | 2004-12-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320111261 Expired - Fee Related CN2661653Y (en) | 2003-11-21 | 2003-11-21 | Concentrated phase pulverized coal distributor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2661653Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101254861B (en) * | 2008-03-07 | 2011-06-01 | 王向明 | Fine coal dense phase conveying system of fusion reducing furnace |
| CN102602691A (en) * | 2012-03-09 | 2012-07-25 | 上海艾能电力工程有限公司 | Y-shaped coal dropping pipe in power plant coal conveying system |
| CN104315510A (en) * | 2014-11-12 | 2015-01-28 | 宁夏嘉翔自控技术有限公司 | Tube bundle of pulverized coal burner of metal magnesium reduction furnace |
| CN104390212A (en) * | 2014-11-12 | 2015-03-04 | 宁夏嘉翔自控技术有限公司 | Connecting pipe for pulverized coal burner of magnesium metal reduction furnace |
| CN104870342A (en) * | 2012-12-20 | 2015-08-26 | 汉高股份有限及两合公司 | Switch for a fuel |
| CN105570885A (en) * | 2016-03-03 | 2016-05-11 | 高飞 | Burner flame nozzle of power station boiler |
| CN106907710A (en) * | 2017-03-02 | 2017-06-30 | 中国科学院工程热物理研究所 | Dual fuel nozzle, nozzle array and burner with fractal structure cartridge |
-
2003
- 2003-11-21 CN CN 200320111261 patent/CN2661653Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101254861B (en) * | 2008-03-07 | 2011-06-01 | 王向明 | Fine coal dense phase conveying system of fusion reducing furnace |
| CN102602691A (en) * | 2012-03-09 | 2012-07-25 | 上海艾能电力工程有限公司 | Y-shaped coal dropping pipe in power plant coal conveying system |
| CN104870342A (en) * | 2012-12-20 | 2015-08-26 | 汉高股份有限及两合公司 | Switch for a fuel |
| CN104315510A (en) * | 2014-11-12 | 2015-01-28 | 宁夏嘉翔自控技术有限公司 | Tube bundle of pulverized coal burner of metal magnesium reduction furnace |
| CN104390212A (en) * | 2014-11-12 | 2015-03-04 | 宁夏嘉翔自控技术有限公司 | Connecting pipe for pulverized coal burner of magnesium metal reduction furnace |
| CN105570885A (en) * | 2016-03-03 | 2016-05-11 | 高飞 | Burner flame nozzle of power station boiler |
| CN106907710A (en) * | 2017-03-02 | 2017-06-30 | 中国科学院工程热物理研究所 | Dual fuel nozzle, nozzle array and burner with fractal structure cartridge |
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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: 20041208 Termination date: 20111121 |