CN205957157U - Paper mill boiler of anti -coking - Google Patents
Paper mill boiler of anti -coking Download PDFInfo
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- CN205957157U CN205957157U CN201620997555.2U CN201620997555U CN205957157U CN 205957157 U CN205957157 U CN 205957157U CN 201620997555 U CN201620997555 U CN 201620997555U CN 205957157 U CN205957157 U CN 205957157U
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- vertical shaft
- returning charge
- separator
- coking
- boiler
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Abstract
The utility model provides a paper mill boiler of anti -coking, including preceding shaft, separator and back shaft, preceding shaft is supreme in proper order including the plenum by down, dense region and dilute -phase zone, be provided with the air distribution plate between plenum and the dense region, material inlet and material return opening have been seted up on dense region's the lateral wall, back shaft includes the high temperature over heater, low temperature superheater, economizer and air heater, the lower part of separator is equipped with material returning device and ashes cooler, material returning device includes inlet air channel, the returning charge fan, oxygen bearing concentration through mist in the adjustment inlet air channel, and then control returning charge combustion temperature is in 800 DEG C ~1000 DEG C intervals, make the returning charge can not plug up material return opening, make whole machine move safety, and improve its production efficiency.
Description
Technical field
This utility model is related to pulp technology for making paper, the paper mill boiler of more particularly, to a kind of anti-coking.
Background technology
In separating at high temperature CFBB now uses, in cyclone separator returning charge coal ash returning charge, due to
More than 1000 DEG C, returning charge mouth is blocked in coking to local temperature, therefore often results in the accident of unplanned blowing out, leads to the effect producing
Rate is low, and the cost keeping in repair also greatly increases.
Utility model content
This utility model provides a kind of paper mill boiler of anti-coking, blocks returning charge mouth for solving local overheating coking
Problem.
This utility model is realized in：A kind of paper mill boiler of anti-coking, including before vertical shaft, separator and after erect
Well, is connected by described separator between front vertical shaft and rear vertical shaft；
Described front vertical shaft includes air compartment, emulsion zone and dilute-phase zone from the bottom to top successively, and the side wall of described emulsion zone is opened
It is provided with material inlet and returning charge mouth；
Described rear vertical shaft includes high temperature superheater, low temperature superheater, economizer and air preheater, the entering of air preheater
QI KOU and atmosphere, gas outlet is connected to the inlet end of described air compartment bottom；
The bottom of described separator is provided with material-returning device and ashes cooler, and described material-returning device includes air intake passage and returns
Material blower fan, returning charge blower fan is arranged in air intake passage, and one end of air intake passage is connected with the returning charge mouth of front vertical shaft, air intake passage
The other end is connected to boiler exhaust gas passage.
Further, described returning charge blower fan is adjustable speed fan.
Further, also include nitrogen coking device, described nitrogen coking device includes compressed nitrogen source of the gas and annular
Air outlet, described round wind outlet around being arranged on the medial wall of returning charge mouth of described front vertical shaft, pass through close by round wind outlet
Tube sealing road and proportional solenoid are connected to described compressed nitrogen source of the gas, compressed nitrogen vertical shaft before described round wind outlet spirt,
The anti-burning passage of annular nitrogen of vertical shaft before formation one is pointed at returning charge mouth.
Further, described front vertical shaft and separator interior are provided with abrasionproof liner.
Further, described rear vertical shaft is additionally provided with chimney, and described chimney is connected with discharge flue.
Further, described separator is Adiabatic Cyclone separator, inertia separator or square separator.
This utility model has the advantage that：Be different from existing boiler in returning charge, often due to local overheating and tie
Jiao blocks the problem of returning charge mouth, and the technical program enters the control of trip temperature through returning charge blower fan, by the waste gas in discharge flue
In vertical shaft before returning charge is sent into, so control returning charge mouth at ignition temperature in 800 DEG C～1000 DEG C intervals so that returning charge not
Returning charge mouth can be blocked so that whole machine runs safety, and improve its production efficiency.
Brief description
Fig. 1 is the partial schematic diagram of the paper mill boiler of anti-coking in this utility model embodiment；
Fig. 2 is the schematic diagram of discharge flue in this utility model embodiment；
Fig. 3 is front vertical shaft schematic diagram in this utility model embodiment；
Fig. 4 is the module map of this utility model embodiment；
Fig. 5 is the structural representation of nitrogen coking device in this utility model embodiment；
The anti-burning passage of annular nitrogen that Fig. 6 is formed by nitrogen coking device in this utility model embodiment is illustrated
Figure.
Label declaration：
10th, front vertical shaft；
11st, fin panel casing；
12nd, air compartment；
13rd, emulsion zone；
14th, dilute-phase zone；
15th, air distribution plate；
16th, bell-type windshield；
17th, material inlet；
18th, returning charge mouth；
19th, boiler；
20th, separator；
21st, material-returning device；
22nd, ashes cooler；
30th, rear vertical shaft；
31st, high temperature superheater；
32nd, low temperature superheater；
33rd, economizer；
36th, chimney；
34th, air preheater；
35th, discharge flue；
41st, round wind outlet；
42nd, proportional solenoid；
43rd, compressed nitrogen source of the gas；
101st, the side wall of front vertical shaft；
102nd, abrasionproof liner；
191st, waste discharge slag passage；
192nd, boiler bottom；
120th, the inlet end of air compartment bottom；
211st, air intake passage；
213rd, returning charge blower fan；
351st, electric cleaner；
352nd, air-introduced machine；
401st, temperature sensor；
402nd, gas sensor；
403rd, controller；
411st, the annular anti-burning passage of nitrogen；
Specific embodiment
By describing technology contents of the present utility model, structural features in detail, being realized purpose and effect, below in conjunction with enforcement
Mode simultaneously coordinates accompanying drawing to be explained in detail.
Refer to Fig. 1 to Fig. 6, a kind of paper mill boiler of anti-coking of this utility model, including before vertical shaft 10, separator 20
With rear vertical shaft 30, it is connected by described separator between front vertical shaft and rear vertical shaft；
Described front vertical shaft is always to hang structure, and the side wall 101 of front vertical shaft is provided with fin panel casing 11, and front vertical shaft is from the bottom to top
Include air compartment 12, emulsion zone 13 and dilute-phase zone 14 successively, be provided with transition region, air compartment between emulsion zone 13 and dilute-phase zone 14
It is provided with air distribution plate 15 and emulsion zone between, air distribution plate has been evenly arranged bell-type windshield 16, the side wall of emulsion zone opens up
There are material inlet 17 and returning charge mouth 18；
Described rear vertical shaft is supporting construction, and described rear vertical shaft 30 includes high temperature superheater 31, low temperature superheater 32, economizer
33 and air preheater 34, the air inlet of air preheater and atmosphere, gas outlet is connected to the air inlet of described air compartment bottom
End 120, the bottom of rear vertical shaft is provided with discharge flue 35；
The bottom of described separator is provided with material-returning device 21 and ashes cooler 22, and described material-returning device 21 includes air intake and leads to
Road 211 and returning charge blower fan 213, one end of air intake passage is connected with the returning charge mouth of front vertical shaft, and the other end of air intake passage 211 connects
In described discharge flue 35, described returning charge blower fan is arranged on air intake passage 211, and described material-returning device passes through returning charge blower fan 213
Air and hypoxic boiler smoke are caused returning charge mouth, controls the temperature of returning charge burning.
The front vertical shaft of the technical program generally always hangs structure, has pattern water-cooling wall on the side wall of vertical shaft, to front vertical shaft
Interior temperature is controlled, and before protection, the temperature of the borehole wall of vertical shaft will not be too high, is to provide for boiler in the charging aperture of emulsion zone
Coal fuel, and then fuel is decomposed, provides wind-force for front vertical shaft so that gas and light in the air compartment of the bottom of front vertical shaft
Amount solid particle blow to separate well, may also operate as certain cooling effect simultaneously, therefore front vertical shaft formed its divide into close
Phase region and dilute-phase zone, the air distribution plate between air compartment and emulsion zone are evenly arranged bell-type windshield so that cloth wind structure is
360 degree of cloth wind, so effectively avoid the convection current between blast cap and the blast cap abrasion caused by jet deflection, simultaneously can be effective
Solution material entrance air compartment, is not in card slag phenomenon and burnout phenomenon crossed by blast cap, and because bell-type windshield cloth wind structure is produced
Raw wind flow is big, and cloth wind is uniformly, and then makes fluidisation stably produce rational wind resistance, thus preventing the heavy of bulk granule
Form sediment.In rear vertical shaft generally supporting construction, steam is further heated to overtemperature from saturation temperature by high temperature superheater, and then
Improve the utilization ratio of its thermal cycle, high temperature superheater is arranged in the passage between front vertical shaft and rear vertical shaft, low temperature superheater
The low-pressure steam making work(is heated and reached uniform temperature, thus further improving the utilization ratio of thermal cycle.
Described economizer is installed on boiler back end ductwork bottom for a kind of device of recovery waste heat, and boiler feedwater is heated into drum pressure
The heating surface of the saturation water under power, because it absorbs the heat of low-temperature flue gas, reduces the exhaust gas temperature of flue gas, saves energy
Source, improves whole utilization efficiency.Described air preheater is that flue gas in rear vertical shaft passes through before internal fin will enter
The air preheat of vertical shaft is to the heating surface of uniform temperature.So that the gas temperature of the boiler of vertical shaft reaches required temperature value before entering,
And then the heat exchange performance of raising boiler, also reduce energy expenditure, remaining flue gas then enters discharge flue simultaneously.In front vertical shaft
And rear vertical shaft between, there is separator, separated by separator and gas is separated with light weight solid particle, so that gas is erected after entering
Well, and light weight solid particle enters ashes cooler, by, after the cooling of ashes cooler, light weight solid particle enters and returns
Material device, blows into hypoxic boiler smoke by returning charge blower fan in air intake passage, therefore controls the temperature of mixed gas, make
Obtain returning charge returning charge mouth will not be blocked, it is to avoid the generation of fault.
The technical program, described returning charge blower fan is adjustable speed fan, and returning charge mouth 18 is provided with use with the junction of emulsion zone 13
In the temperature sensor 401 of detection returning charge ignition temperature, in air intake passage, it is provided with the gas sensing for detecting oxygen concentration
Device 402, described returning charge blower fan 212, returning charge blower fan 213, temperature sensor and gas sensor are connected to controller 403, returning charge
Temperature according to detected by temperature sensor for the combustion controller adjusts the rotating speed of returning charge blower fan and returning charge blower fan, thus adjust into
The oxygen concentration of mixed gas in wind passage, controls returning charge ignition temperature in 800 DEG C～1000 DEG C intervals.In air intake passage
Oxygen concentration is detected, the temperature simultaneously in the junction of returning charge mouth and emulsion zone, returning charge burnt detects, and then
By controller control returning charge blower fan and returning charge blower fan intake so that oxygen content in air intake passage and temperature reach predetermined
Value in the range of, thus having reached the problem avoiding charging aperture to be plugged.Wherein, due to the hardware requirement of described controller not
Height, described controller is preferably 51 singlechip chips.
Refer to Fig. 5 and Fig. 6, the paper mill boiler of described anti-coking, also include nitrogen coking device, described nitrogen is prevented
Coking device includes compressed nitrogen source of the gas 43 and round wind outlet 41, and described round wind outlet 41 is around being arranged at described front vertical shaft
On the medial wall of returning charge mouth, that is, on the medial wall of returning charge air intake passage 211 of front vertical shaft, round wind outlet 41 is passed through to seal pipeline
It is connected to described compressed nitrogen source of the gas 43 with proportional solenoid 42.Compressed nitrogen in compressed nitrogen source of the gas 43 is from described round wind outlet
Vertical shaft before spirt, forms the anti-burning passage of annular nitrogen 411 of vertical shaft before a sensing at returning charge mouth.Described proportional solenoid 42
It is connected to controller noted above, control whether that opening proportional solenoid forms the anti-burning passage of nitrogen 411 by controller, or ratio electricity
The opening angle of magnet valve.Preferably, described controller first pass through adjustment returning charge blower fan, rotating speed, control returning charge mouth at temperature；
When temperature at returning charge mouth is more than 1000 °, opens described proportional solenoid and form the anti-burning passage of nitrogen 411, returned with completely cutting off
Material is combined with the oxygen in vertical shaft, suppresses its burning further with slagging prevention.
The technical program, is provided with abrasionproof liner 102 inside described front vertical shaft 10 and separator 20, and then passes through abrasionproof liner
To protect the metal structure of front vertical shaft and separator, to increased the service life of front vertical shaft and separator.
Be provided with electric cleaner 351 and air-introduced machine 352 in discharge flue described in the technical program, by electric cleaner so that
Dust degree in discharge flue is reduced to the depth not polluted the environment, logical gas being guided out smoke evacuation by air-introduced machine
Road, reaches the purpose of exclusion flue dust.
After described in the technical program, vertical shaft 30 is additionally provided with chimney 36, and described chimney is connected with discharge flue so that passing through
The flue dust of dedusting is discharged in air.
Described in the technical program, front vertical shaft 10 also includes boiler 19, and described boiler is all connected with charging aperture and returning charge mouth, makes
Must feeding and all fall in boiler with returning charge, thus carry out burning separating, reaching the purpose making full use of raw material.
Boiler 19 described in the technical program is additionally provided with waste discharge slag passage 191, and described waste discharge slag passage is arranged at boiler bottom
Portion 192, and then it is burned remaining useless waste residue by the discharge of waste discharge slag passage, thus keeping succinct in boiler.
Separator 20 described in the technical program is Adiabatic Cyclone separator, inertia separator or square separator, Jin Ershi
Answer different boilers.
The foregoing is only embodiment of the present utility model, not thereby limit the scope of the claims of the present utility model, every
The equivalent structure made using this utility model description and accompanying drawing content or equivalent flow conversion, or be directly or indirectly used in
Other related technical fields, are all included in the same manner in scope of patent protection of the present utility model.
Claims (6)
1. a kind of paper mill boiler of anti-coking is it is characterised in that include front vertical shaft, separator and rear vertical shaft, front vertical shaft with after
It is connected by described separator between vertical shaft；
Described front vertical shaft includes air compartment, emulsion zone and dilute-phase zone from the bottom to top successively, and the side wall of described emulsion zone offers
Material inlet and returning charge mouth；
Described rear vertical shaft includes high temperature superheater, low temperature superheater, economizer and air preheater, the air inlet of air preheater
With atmosphere, gas outlet is connected to the inlet end of described air compartment bottom；
The bottom of described separator is provided with material-returning device and ashes cooler, and described material-returning device includes air intake passage and returning charge wind
Machine, returning charge blower fan is arranged in air intake passage, and one end of air intake passage is connected with the returning charge mouth of front vertical shaft, air intake passage another
End is connected to boiler exhaust gas passage.
2. the paper mill boiler of anti-coking according to claim 1 is it is characterised in that described returning charge blower fan is speed-regulating wind
Machine.
3. the paper mill boiler of anti-coking according to claim 2 is it is characterised in that also include nitrogen coking device,
Described nitrogen coking device includes compressed nitrogen source of the gas and round wind outlet, and described round wind outlet is described front perpendicular around being arranged at
On the medial wall of the returning charge mouth of well, round wind outlet is connected to described compressed nitrogen source of the gas by sealing pipeline and proportional solenoid,
Compressed nitrogen vertical shaft before described round wind outlet spirt, before at returning charge mouth, formation one is pointed to, the annular nitrogen of vertical shaft is anti-burning
Passage.
4. the paper mill boiler of anti-coking according to claim 1 is it is characterised in that described front vertical shaft and separator interior
It is provided with abrasionproof liner.
5. the paper mill boiler of anti-coking according to claim 1 is it is characterised in that described rear vertical shaft is additionally provided with cigarette
Chimney, described chimney is connected with discharge flue.
6. the paper mill boiler of anti-coking according to claim 1 is it is characterised in that described separator divides for Adiabatic Cyclone
From device, inertia separator or square separator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620997555.2U CN205957157U (en) | 2016-08-30 | 2016-08-30 | Paper mill boiler of anti -coking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620997555.2U CN205957157U (en) | 2016-08-30 | 2016-08-30 | Paper mill boiler of anti -coking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205957157U true CN205957157U (en) | 2017-02-15 |
Family
ID=57979360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620997555.2U Active CN205957157U (en) | 2016-08-30 | 2016-08-30 | Paper mill boiler of anti -coking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205957157U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107166373A (en) * | 2017-05-20 | 2017-09-15 | 杭州江东富丽达热电有限公司 | A kind of steam waste-heat recovery device for boiler combustion system |
| CN107238074A (en) * | 2017-05-20 | 2017-10-10 | 杭州江东富丽达热电有限公司 | A kind of boiler combustion system |
-
2016
- 2016-08-30 CN CN201620997555.2U patent/CN205957157U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107166373A (en) * | 2017-05-20 | 2017-09-15 | 杭州江东富丽达热电有限公司 | A kind of steam waste-heat recovery device for boiler combustion system |
| CN107238074A (en) * | 2017-05-20 | 2017-10-10 | 杭州江东富丽达热电有限公司 | A kind of boiler combustion system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 363900 official Hill Industrial Park, Wuan Town, Changtai County, Zhangzhou, Fujian Patentee after: Shanying South China Paper Co., Ltd Address before: 363900 official Hill Industrial Park, Wuan Town, Changtai County, Zhangzhou, Fujian Patentee before: FUJIAN LIANSHENG PAPER INDUSTRY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |