CN207975638U - A kind of device adjusting steam temperature using burner or milling waste steam processed - Google Patents
A kind of device adjusting steam temperature using burner or milling waste steam processed Download PDFInfo
- Publication number
- CN207975638U CN207975638U CN201820250466.0U CN201820250466U CN207975638U CN 207975638 U CN207975638 U CN 207975638U CN 201820250466 U CN201820250466 U CN 201820250466U CN 207975638 U CN207975638 U CN 207975638U
- Authority
- CN
- China
- Prior art keywords
- burner
- lack
- gas
- lower hearth
- steam
- 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.)
- Active
Links
Abstract
The utility model discloses a kind of devices adjusting steam temperature using burner or milling waste steam processed, belong to coal-burning boiler technical field, the lack of gas that burner is separated or pulverized coal preparation system lack of gas are divided into two by main pipe and introduce lower hearth respectively by lack of gas wind pipeline by the utility model, the lack of gas specific location for wherein introducing upper furnace is located at top layer burner top, and the lack of gas specific location for introducing lower hearth is located at top layer's burner and its following；The lack of gas wind pipeline of lower hearth is respectively arranged to close or open the shut-off valve of lack of gas supply, and the regulating valve for adjusting lack of gas air force in introducing.The problem of utility model aims to solve pulverized-coal fired boiler especially W types flame boiler " high load capacity overtemperature, underload steam temperature are insufficient ".
Description
Technical field
The utility model belongs to coal-burning boiler technical field.
Background technology
Currently, station boiler more or less has that steam temperature overtemperature or steam temperature are insufficient, especially pulverized-coal fired boiler,
When high load capacity, reach the standard grade to maintain vapor (steam) temperature to be not higher than, it has to put into a large amount of desuperheating waters, reheated steam when overtemperature is serious sometimes
Input desuperheating water is also had to, safety and the economy of unit are seriously affected；On the other hand, when underrun, steam temperature
Degree is difficult to reach design value, and some unit boiler steam temperatures are relatively low very much, and especially reheat steam temperature is even up to 40-50 DEG C, together
Sample seriously affects the economy of unit.
No matter " high load capacity overtemperature, underload steam temperature are insufficient " this contradiction, design or actual motion be difficult to take into account, mesh
Before can only adjust plate washer by the way that tail flue gas is arranged and adjust, this also only carries out different distribution between crossing reheater, can not
Entirety increased or decreased reheat steam temperature degree.This problem is more prominent in coal varitation：When coal quality is deteriorated, high load capacity overtemperature
It is more obvious, it can only be controlled by putting into a large amount of desuperheating water, drop of having to sometimes for the safe operation of unit is negative
Lotus runs；When the volatile matter of coal is got higher, underload steam temperature is more insufficient, and especially the temperature of reheated steam deviating on the low side is more, does not have but at this time
Any regulating measure improves vapor (steam) temperature, and this contradiction is particularly evident in W flame boiler.
Utility model content
The purpose of this utility model is that：It proposes a kind of device adjusting steam temperature using burner or milling waste steam processed, solves
The problem of pulverized-coal fired boiler especially W types flame boiler " high load capacity overtemperature, underload steam temperature are insufficient ".
The utility model aim is realized by following technical proposals：
A kind of device adjusting steam temperature using burner or milling waste steam processed, the lack of gas that burner is separated or powder system processed
System lack of gas are divided into two by main pipe introduces lower hearth by lack of gas wind pipeline respectively, wherein introducing the specific position of lack of gas of upper furnace
It is located at top layer's burner and its following setting in the lack of gas specific location for above top layer burner, introducing lower hearth；It introduces
The lack of gas wind pipeline of upper lower hearth is respectively arranged to close or open the shut-off valve of lack of gas supply, and for adjusting lack of gas wind
Measure the regulating valve of size.
Alternatively, the lack of gas specific location of upper furnace is introduced between top layer's burner and lower layer's burnout degree.It should
Position be between burner and burnout degree, be reducing atmosphere, at this spray into idle air, using in lack of gas with coal dust again
On the one hand secondary burning increases the thermal discharge (be equivalent to and improve flame central position) at this, improves the temperature of steam；It is another
Aspect can also reduce the discharge of NOx, simultaneously because before the burnout degree, unburned carbon in flue dust is compared also more easily-controllable after burnout degree
System.
Alternatively, boiler is w flame boilers, and the lack of gas specific location for introducing lower hearth is located at top layer's burner and most
Between lower layer's Secondary Air.Lack of gas introduce the position and compare lower hearth other positions, on the one hand can increase the thermal discharge of lower hearth,
To reduce the heat release of upper furnace；On the other hand since entrusting for lowest level Secondary Air is unlikely to cause clinker directly to fall cold ash
Bucket, causes excessive lime-ash to lose.
Alternatively, boiler is tangential boiler, and introducing the lack of gas specific location of lower hearth, to be located at top layer's burner secondary
Between wind and lowest level burner Secondary Air.Lack of gas introduce the position and compare lower hearth other positions, under on the one hand capable of increasing
The thermal discharge of burner hearth, to reduce the heat release of upper furnace；On the other hand since entrusting for Secondary Air is unlikely to cause clinker direct
Fall dry bottom hopper, excessive lime-ash is caused to lose.
Alternatively, boiler is opposed firing boiler, introduce lower hearth lack of gas specific location be located at top layer's burner with most
Between lower layer's burner.Lack of gas introduce the position and compare lower hearth other positions, on the one hand can increase the thermal discharge of lower hearth,
To reduce the heat release of upper furnace；On the other hand due to there is entrusting for lower burner to be unlikely to cause clinker directly to fall cold ash
Bucket, causes excessive lime-ash to lose.
Alternatively, lack of gas wind snout is arranged as the form with surrounding air.In the program, it can prevent from tying around spout
It is burnt.
The aforementioned main scheme of the utility model and its each further selection scheme can be freely combined to form multiple schemes,
The scheme that can be used and be claimed for the utility model；And the utility model, (each non conflicting selection) selection between and and
It can also be freely combined between other selections.Those skilled in the art after understanding the utility model according to the prior art and
Common knowledge can be illustrated there are many combination, be the claimed technical solution of the utility model, do not do exhaustion herein.
The course of work is：The utility model utilizes band in lack of gas using burner or the different incorporation ways of milling waste steam processed
The burning again of some coal dusts (preferably 10% ± 5% weight) increases the thermal discharge (heat release of upper furnace or lower hearth) at this,
To adjust flame central position, by adjusting flame kernel, the heat absorption of heating surface is increased or decreased, to adjust Boiler Steam temperature
Degree (including crossing reheat steam temperature), while the production quantity for firing reduction NOx again of microfine coal in lack of gas can also be passed through.
The beneficial effects of the utility model：The utility model is not through the above technical solutions, the case where increasing and decreasing heating surface
Under, using burner or the different incorporation ways of pulverized coal preparation system lack of gas, coordinates original steam temperature regulating measure, can successfully solve
Pulverized-coal fired boiler especially W types flame boiler " high load capacity overtemperature, underload steam temperature are insufficient " this long-term open question, carries
The safety of high unit and economy；The production quantity for firing reduction NOx again of microfine coal in lack of gas can also be passed through simultaneously.
Description of the drawings
Fig. 1 is the device flow diagram of the utility model embodiment 1；
Fig. 2 is the device flow diagram of the utility model embodiment 2.
Specific implementation mode
Following non-limiting examples are for illustrating the utility model.
Embodiment 1：
Refering to what is shown in Fig. 1, being used for the regulating system of W type flame boilers, serial number 1 is burner position in figure, and serial number 2 is combustion
Wind position to the greatest extent, serial number 3 are that lack of gas wind snout introduces position, and serial number 4 is milling waste steam processed or burner lack of gas pipeline main pipe, serial number 5
To adjust flow regulating valve, serial number 6 is shut-off valve, and serial number 7 is lowest level Secondary Air position, and serial number 8 is upper furnace, serial number 9
For lower hearth.
(1) pulverized coal preparation system or burner lack of gas are divided into two by main pipe 4 introduce respectively upper furnace 8 and lower hearth 9 (with
Horizontal dotted line is boundary in figure, and above is upper furnace 8, is below lower hearth 9, i.e. 1 top of top layer's burner is upper furnace 8, most upper
Layer burner 1 and its below be lower hearth 9)；
(2) regulating valve 5 and shut-off valve 6 is respectively set in the lack of gas wind pipeline of lower hearth 8,9 in introducing, for adjusting and turning off
Lack of gas；
(3) the lack of gas position 3 of upper furnace 8 is introduced：First choice is arranged in top layer's burner (1 cloth of burner position in figure
Set one layer of burner) between lowest level burnout degree (2 arrangements in burnout degree position, one layer of burnout degree in figure), can also be upper stove
8 other positions of thorax；
(4) the lack of gas position 3 of lower hearth 9 is introduced：First choice is arranged in top layer's burner position 1 and lowest level Secondary Air 7
Between, can also be 9 other positions of lower hearth.
The method that steam temperature is adjusted using the aforementioned device for adjusting steam temperature using burner or milling waste steam processed, vapor (steam) temperature overtemperature
Or spray water flux it is big when, be decreased or turned off input upper furnace weary tolerance, the weary tolerance for lower hearth of increasing input；Vapor (steam) temperature is not
When sufficient, the weary tolerance for upper furnace of increasing input is decreased or turned off the weary tolerance of input lower hearth.In the program, vapor (steam) temperature is super
When temperature or spray water flux are big, it is decreased or turned off the weary tolerance of input upper furnace, the weary tolerance for lower hearth of increasing input reduces flame
Center, to reduce vapor (steam) temperature and spray water flux；When vapor (steam) temperature deficiency, the weary tolerance for upper furnace of increasing input, reduce or
The weary tolerance of input lower hearth is closed, flame kernel is improved, to improve vapor (steam) temperature.Alternatively, 10% is carried in lack of gas
The coal dust of ± 5 weight.The program utilizes the burning again of the part coal dust, increases the thermal discharge at this, to adjust in flame
Heart position.
Embodiment 2：
Refering to what is shown in Fig. 2, being used for the regulating system of tangential boiler and opposed firing boiler, serial number 1 is burner position, sequence in figure
Numbers 2 be burnout degree position, and serial number 3 is that lack of gas wind snout introduces position, and serial number 4 is that milling waste steam processed or burner lack of gas pipeline are female
Pipe, serial number 5 are to adjust flow regulating valve, and serial number 6 is shut-off valve, and serial number 8 is upper furnace, and serial number 9 is lower hearth.
(1) pulverized coal preparation system or burner lack of gas are divided into two by main pipe 4 introduce respectively upper furnace 8 and lower hearth 9 (with
Horizontal dotted line is boundary in figure, and above is upper furnace 8, is below lower hearth 9, i.e. 1 top of top layer's burner is upper furnace 8, most upper
Layer burner 1 and its below be lower hearth 9)；
(2) regulating valve 5 and shut-off valve 6 is respectively set in the lack of gas wind pipeline of lower hearth 8,9 in introducing, for adjusting and turning off
Lack of gas；
(3) the lack of gas position 3 of upper furnace 8 is introduced：First choice is arranged in top layer's burner, and (burner position 1 is arranged in figure
4 layers of burner) between lowest level burnout degree (2 arrangements in burnout degree position, one layer of burnout degree in figure), can also be upper stove
8 other positions of thorax；
(4) the lack of gas position 3 of lower hearth 9 is introduced：First choice is arranged among top layer's burner and lowest level burner,
Can be 9 other positions of lower hearth.
The method that steam temperature is adjusted using the aforementioned device for adjusting steam temperature using burner or milling waste steam processed, vapor (steam) temperature overtemperature
Or spray water flux it is big when, be decreased or turned off input upper furnace weary tolerance, the weary tolerance for lower hearth of increasing input；Vapor (steam) temperature is not
When sufficient, the weary tolerance for upper furnace of increasing input is decreased or turned off the weary tolerance of input lower hearth.In the program, vapor (steam) temperature is super
When temperature or spray water flux are big, it is decreased or turned off the weary tolerance of input upper furnace, the weary tolerance for lower hearth of increasing input reduces flame
Center, to reduce vapor (steam) temperature and spray water flux；When vapor (steam) temperature deficiency, the weary tolerance for upper furnace of increasing input, reduce or
The weary tolerance of input lower hearth is closed, flame kernel is improved, to improve vapor (steam) temperature.Alternatively, 10% is carried in lack of gas
The coal dust of ± 5 weight.The program utilizes the burning again of the part coal dust, increases the thermal discharge at this, to adjust in flame
Heart position.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
All any modification, equivalent and improvement etc., should be included in the utility model made by within the spirit and principle of utility model
Protection domain within.
Claims (6)
1. a kind of device adjusting steam temperature using burner or milling waste steam processed, it is characterised in that：Burner is separated weary
Gas or pulverized coal preparation system lack of gas are divided into two by main pipe introduces lower hearth by lack of gas wind pipeline respectively, wherein introducing upper furnace
Lack of gas specific location is located above top layer burner, introduce lower hearth lack of gas specific location be located at top layer's burner and its
Below；The lack of gas wind pipeline of lower hearth is respectively arranged to close or open the shut-off valve of lack of gas supply in introducing, and is used for
Adjust the regulating valve of lack of gas air force.
2. the device of steam temperature is adjusted using burner or milling waste steam processed as described in claim 1, it is characterised in that：Stove in introducing
The lack of gas specific location of thorax is between top layer's burner and lower layer's burnout degree.
3. the device of steam temperature is adjusted using burner or milling waste steam processed as described in claim 1, it is characterised in that：Boiler is w
Flame boiler introduces the lack of gas specific location of lower hearth between top layer's burner and lowest level Secondary Air.
4. the device of steam temperature is adjusted using burner or milling waste steam processed as described in claim 1, it is characterised in that：Boiler is to cut
Circle boiler, introduce lower hearth lack of gas specific location be located at top layer's burner Secondary Air and lowest level burner Secondary Air it
Between.
5. the device of steam temperature is adjusted using burner or milling waste steam processed as described in claim 1, it is characterised in that：Boiler is pair
Boiler is rushed, introduces the lack of gas specific location of lower hearth between top layer's burner and lowest level burner.
6. the device of steam temperature is adjusted using burner or milling waste steam processed as described in claim 1, it is characterised in that：Lack of gas wind sprays
Mouth is arranged as the form with surrounding air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820250466.0U CN207975638U (en) | 2018-02-12 | 2018-02-12 | A kind of device adjusting steam temperature using burner or milling waste steam processed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820250466.0U CN207975638U (en) | 2018-02-12 | 2018-02-12 | A kind of device adjusting steam temperature using burner or milling waste steam processed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207975638U true CN207975638U (en) | 2018-10-16 |
Family
ID=63767549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820250466.0U Active CN207975638U (en) | 2018-02-12 | 2018-02-12 | A kind of device adjusting steam temperature using burner or milling waste steam processed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207975638U (en) |
-
2018
- 2018-02-12 CN CN201820250466.0U patent/CN207975638U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103363516B (en) | A kind of CFBB with double reheat | |
| CN107559821B (en) | The multiple-pass industrial coal powder boiler of flue gas recirculation and vortex burner overhead | |
| CN203869022U (en) | Boiler system and temperature adjusting device thereof | |
| CN202884901U (en) | Boiler capable of realizing reignition of exhaust gas coal powder by using high-temperature flue gas and reducing NOx | |
| CN103363517B (en) | A kind of high bed temperature CFBB of 700 DEG C and above steam parameter | |
| CN106871110B (en) | Low ignition heat ultra-low load steady for thermal power plant's unit pulverized-coal system fires system | |
| CN103206716B (en) | The low NO of many coals ecad xcombustion system | |
| CN103486563A (en) | Supercritical once-through boiler capable of firing eastern Junggar coal | |
| CN203771439U (en) | High-moisture lignite medium speed mill coal pulverizing system using pulverized coal combustion heating primary air | |
| CN103206699A (en) | Pulverized coal boiler capable of subcritically combusting lean coal | |
| CN207975638U (en) | A kind of device adjusting steam temperature using burner or milling waste steam processed | |
| CN108180469A (en) | A kind of method and apparatus for adjusting steam temperature using burner or milling waste steam processed | |
| CN207035089U (en) | A kind of side wall burnout degree structure with adjustable guide vane | |
| CN202101217U (en) | Biomass steam boiler with horizontal water and fire tubes | |
| CN103836636B (en) | A kind of device reducing heat primary air cold wind incorporation efficiency | |
| CN203223896U (en) | Subcritical lean coal-burning coal powder boiler | |
| CN203431837U (en) | Circulating fluidized bed boiler with secondary reheat function | |
| CN208124615U (en) | A kind of big reserves environmental protection numerical control heating stove | |
| CN209540869U (en) | A kind of accurate blowing system of pulverized-coal fired boiler | |
| CN210241551U (en) | Four corners circle of contact subassembly of variable circle of contact | |
| CN203963976U (en) | Be suitable for the coal-fired plant boiler system of underrun | |
| CN211011334U (en) | W flame boiler NOx ultralow emission cooperative control system | |
| CN203431838U (en) | High-bed-temperature circulating fluidized bed boiler with 700 DEG C and above steam parameter | |
| CN208418705U (en) | A kind of pyrolysis installation | |
| CN203744282U (en) | Device for decreasing cold air incorporation rate of hot primary air |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |