CN201255404Y - Boiler feed back apparatus using pure refinery coke as fuel - Google Patents
Boiler feed back apparatus using pure refinery coke as fuel Download PDFInfo
- Publication number
- CN201255404Y CN201255404Y CNU2008200644437U CN200820064443U CN201255404Y CN 201255404 Y CN201255404 Y CN 201255404Y CN U2008200644437 U CNU2008200644437 U CN U2008200644437U CN 200820064443 U CN200820064443 U CN 200820064443U CN 201255404 Y CN201255404 Y CN 201255404Y
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- valve body
- gas tube
- fuel
- boiler
- bed
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Abstract
The utility model discloses a boiler return device which takes refinery coke as fuel. The boiler return device comprises a riser, a U-shaped valve and a return tube with an expansion joint which are connected orderly, as well as a loosing bed central charge tube and a return bed central charge tube which are arranged on the valve; a wind box which is arranged under the valve; a wind resistant cap and a blower which are arranged at the base plate of the valve. The boiler return device is characterized in that the valve under the loosing bed central charge tube and the return bed central charge tube is also provided with a loosing bed root charge tube and a return bed root charge tube which are both connected with the blower. The boiler return device has the advantages of good liquidity of material flow, no slagbonding and blocking, low power consumption and no damage of expansion joint.
Description
Technical field
The utility model relates to a kind of feeding back device of boiler.
Background technology
Electric power is the major impetus support of economic development, and current electric power is still based on thermoelectricity, and thermoelectricity mainly is fuel with the coal.The price of coal has increased to 1000 yuan/ton level, and utilizing new fuel has been the effective means that solves the coal resource anxiety as replenishing of coal resource.Petroleum coke is the final waste material of modern oil refinery industry, and its calorific value height can be used as the postcombustion of electric coal, and its market price is 650～950 yuan/ton level at present.Because petroleum coke has phosphorus content height, fugitive constituent is low, difficulty is caught fire smooth combustion characteristic, and extremely difficulty burns, at present only with petroleum coke as joining fuel burning on a small quantity with other fuel multifuel combustions such as coals.Also not having the boiler manufacturer production at home is the boiler of fuel with pure petroleum coke, reason is that petroleum coke is a kind of low-ash fuel, its not flammable matter mainly is made of other metals of vanadium, nickel and trace, and the lime-ash after the burning almost is 100% lime stone derivative; When petroleum coke burnt, part vanadium wherein finally was converted into V
2O
5, its fusing point is 675 ℃, and this temperature is far below the normal combustion temperature in the stove, and other compositions in vanadium and the petroleum coke and the reaction of the calcium in the lime stone can generate the alloy of eutectic point.And the feeding back device of existing boiler, as depicted in figs. 1 and 2, comprise successively standpipe 21, the U-shaped valve body 22 that connects and have the refeed line 23 of expansion joint 24 and be arranged at loosening bed center gas tube 25 and returning charge bed center gas tube 26 on the valve body 22, be arranged in valve body 22 belows bellows 27, be arranged at blast cap 29, blower fan (not shown) on the valve body base plate 28, wherein refeed line 23 is inclined to set, for wide-angle turns to, the base plate 28 that blast cap 29 is set is circular arc, and loosening bed center gas tube 25, returning charge bed center gas tube 26 all link to each other with blower fan with bellows 27; During use, standpipe 21 is connected with the separator that is positioned at furnace outlet smokestack rear portion, and the combustion chamber that the isolated combustible material of separator is sent back in the stove through standpipe 21, valve body 22, refeed line 23 burns away; When the content of vanadium in the petroleum coke was higher, the alloy of these eutectic points was mobile poor near valve body base plate 28 time in the lime-ash, easily causes heat accumulation, causes material slagging scorification obstruction; Because valve body base plate 28 is an arc-shaped structure, under the identical situation of refeed line 23 diameters, the quantity of blast cap 29 significantly reduces, and in the middle part of blast cap 29 mainly concentrated on, it is uneven that around causing and edge lacks distinguished and admirableization, also easily causes the slagging scorification obstruction; Refeed line 23 adopts wide-angle to turn, flow resistance is big, it is not smooth to flow, and in order to overcome resistance, needs to use the big blower fan of power, power consumption is big, and the expansion joint on the refeed line 23 24 is expanded to whole water-cooling wall top-down expansion from the horizontal by being in tilted layout and lead, and there are certain included angle in axial and the main expansion direction of expansion joint 24, and swell increment is bigger, so be easy to expand a series of problems such as joint 24 drawing cracks, distortion, leakage when operation.
The utility model content
The purpose of this utility model is the above-mentioned deficiency at prior art, and providing a kind of is the feeding back device of the boiler of fuel with pure petroleum coke, it have material fluidity good, be difficult for causing slagging scorification obstruction, little, the non-damageable advantage of expansion joint of power consumption.
For achieving the above object, the utility model: a kind of is the feeding back device of the boiler of fuel with pure petroleum coke, comprise successively standpipe, the U-shaped valve body that connects and have the refeed line of expansion joint and be arranged at loosening bed center gas tube and returning charge bed center gas tube on the valve body, be arranged in bellows, the blast cap that is arranged at the valve body base plate, the blower fan of valve body below, it is characterized in that also being respectively equipped with loosening bed root gas tube and returning charge bed root gas tube on the valve body below loosening bed center gas tube and the returning charge bed center gas tube, they all link to each other with blower fan;
By setting up loosening bed root gas tube and returning charge bed root gas tube, increased the quantity of airflow layer and the air distribution share of material returning device, improved the flowability of material in the valve body bottom, prevent the adherent heat accumulation of material and the slagging scorification that causes is stopped up;
As further improvement of the utility model, the valve body base plate of described installation blast cap is the plane; Under the identical situation of refeed line diameter, blast cap arranges that quantity increases greatly and arranges that evenly be difficult for the formation dead angle, goods fluid is good, do not cause heat accumulation and causes slagging scorification;
As further improvement of the utility model, refeed line links to each other by arc-shaped transition with valve body, and has a section of expansion joint and be vertical layout; Make the flow resistance of material littler, returning charge is smooth and easy, power consumption is little, the expansion direction of expansion joint is consistent with main expansion direction, and is not fragile;
As further improvement of the utility model, on refeed line, be provided with inert material and add mouth; By in feeding back device, adding certain inert material, as sand, help guaranteeing the material balance in the pure scoria oil coke CFBB, make total, system advantages of simple more;
In sum, the utlity model has material fluidity good, be difficult for causing slagging scorification obstruction, little, the non-damageable advantage of expansion joint of power consumption.
Description of drawings
Fig. 1 is the structural representation of existing boiler feeding back device.
Fig. 2 is the A-A cutaway view of Fig. 1.
Fig. 3 is the structural representation of the utility model embodiment.
Fig. 4 is the B-B cutaway view of Fig. 3.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further described.
By Fig. 3 and shown in Figure 4, should be the feeding back device of the boiler of fuel with pure petroleum coke, comprise successively standpipe 1, the U-shaped valve body 2 that connects and have the refeed line 3 of expansion joint 4 and be arranged at loosening bed center gas tube 5 and returning charge bed center gas tube 6 on the valve body 2, be arranged in valve body 2 belows bellows 7, be arranged at blast cap 9, blower fan (not shown) on the plane base plate 8 of valve body, wherein refeed line 3 links to each other by arc tube 10 with valve body 2, and the one section refeed line 3 that has expansion joint 4 is vertical layout, is provided with inert material and adds mouth 11 on refeed line 3; Also be respectively equipped with loosening bed root gas tube 12 and returning charge bed root gas tube 13 on the valve body 2 below loosening bed center gas tube 5 and the returning charge bed center gas tube 6, loosening bed center gas tube 5, returning charge bed center gas tube 6, loosening bed root gas tube 12 all link to each other with the blower fan (not shown) with returning charge bed root gas tube 13;
By setting up loosening bed root gas tube 12 and returning charge bed root gas tube 13, increased the quantity of airflow layer and the air distribution share of material returning device, improved the flowability of material in valve body 2 bottoms, prevent the adherent heat accumulation of material and the slagging scorification that causes is stopped up.
Claims (4)
1. one kind is the feeding back device of the boiler of fuel with pure petroleum coke, comprise successively standpipe, the U-shaped valve body that connects and have the refeed line of expansion joint and be arranged at loosening bed center gas tube and returning charge bed center gas tube on the valve body, be arranged in bellows, the blast cap that is arranged at the valve body base plate, the blower fan of valve body below, it is characterized in that also being respectively equipped with loosening bed root gas tube and returning charge bed root gas tube on the valve body below loosening bed center gas tube and the returning charge bed center gas tube, they all link to each other with blower fan.
2. according to claim 1 a kind of be the feeding back device of the boiler of fuel with pure petroleum coke, the valve body base plate that it is characterized in that installing blast cap is the plane.
3. according to claim 1 and 2 a kind of be the feeding back device of the boiler of fuel with pure petroleum coke, it is characterized in that refeed line links to each other by arc tube with valve body, and have a section of expansion joint and be vertical setting.
4. according to claim 1 and 2 a kind of be the feeding back device of the boiler of fuel with pure petroleum coke, it is characterized in that on refeed line, being provided with inert material and add mouthful.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200644437U CN201255404Y (en) | 2008-07-23 | 2008-07-23 | Boiler feed back apparatus using pure refinery coke as fuel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200644437U CN201255404Y (en) | 2008-07-23 | 2008-07-23 | Boiler feed back apparatus using pure refinery coke as fuel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201255404Y true CN201255404Y (en) | 2009-06-10 |
Family
ID=40738724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200644437U Expired - Lifetime CN201255404Y (en) | 2008-07-23 | 2008-07-23 | Boiler feed back apparatus using pure refinery coke as fuel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201255404Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011069332A1 (en) * | 2009-12-09 | 2011-06-16 | 上海锅炉厂有限公司 | Supporting structure allowing of free expansion of material returning device and material returning leg |
| CN103216825A (en) * | 2012-01-20 | 2013-07-24 | 中国科学院工程热物理研究所 | Circular-arc-shaped U valve material returning device for high-density circulating fluidized bed utilizing B-class particle |
| CN115234900A (en) * | 2022-06-24 | 2022-10-25 | 哈尔滨红光锅炉总厂有限责任公司 | Circulating fluidized bed hot water boiler for burning coal powder particles and burning method thereof |
-
2008
- 2008-07-23 CN CNU2008200644437U patent/CN201255404Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011069332A1 (en) * | 2009-12-09 | 2011-06-16 | 上海锅炉厂有限公司 | Supporting structure allowing of free expansion of material returning device and material returning leg |
| CN103216825A (en) * | 2012-01-20 | 2013-07-24 | 中国科学院工程热物理研究所 | Circular-arc-shaped U valve material returning device for high-density circulating fluidized bed utilizing B-class particle |
| CN115234900A (en) * | 2022-06-24 | 2022-10-25 | 哈尔滨红光锅炉总厂有限责任公司 | Circulating fluidized bed hot water boiler for burning coal powder particles and burning method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090610 |