CN206032700U - Limestone flour air conveying system - Google Patents
Limestone flour air conveying system Download PDFInfo
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- CN206032700U CN206032700U CN201621049593.1U CN201621049593U CN206032700U CN 206032700 U CN206032700 U CN 206032700U CN 201621049593 U CN201621049593 U CN 201621049593U CN 206032700 U CN206032700 U CN 206032700U
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- tube cell
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- boiler
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Abstract
The utility model relates to an air conveying technique discloses a limestone flour air conveying system. It is concrete including boiler, tube cell and storehouse pump, the tube cell includes large -scale tube cell of one -level and the small -size tube cell of one -level, the storehouse pump includes big storehouse pump and little storehouse pump, the large -scale tube cell of one -level is connected to big storehouse pump, the large -scale tube cell of one -level passes through the distributor reposition of redundant personnel and is the large -scale tube cell of N root second grade, the small -size tube cell of one -level is connected to little storehouse pump, the small -size tube cell of one -level passes through the distributor reposition of redundant personnel and is the small -size tube cell of N root second grade, N is for being greater than 1 natural number, the boiler left and right sides contains equivalent large -scale powder inlet port and equivalent small -size powder inlet port, large -scale powder inlet port is connected with the large -scale tube cell of second grade, small -size powder inlet port is connected with the small -size tube cell of second grade, and realizing adopting on an equipment not, the tube cell of equidimension carries out lime stone air conveying, saving energy consumption.
Description
Technical field
The present invention relates to Pneumatic Conveying Technology field, particularly a kind of agstone air-transport system.
Background technology
As the environmental protection policy of country and the environmental consciousness of people are strengthened, many power plant adopt Pneumatic Conveying Technology at present
To convey desulfurizing agent.Used as desulfurizing agent, existing powder also has powder compound etc. to agstone, can consume a large amount of in course of conveying
Tolerance, therefore it is particularly important how to be issued to best conveying effect in minimum air consumption situation.
It is when agstone induction system common at present is generally by boiler peak load and worst ature of coal is met, maximum
Agstone amount requires that agstone air-transport system exerts oneself to design by maximum system, the caliber of corresponding pulverized coal feed pipe
Be by now operating point agstone exert oneself requirement calculate and obtain.
But boiler is in During Process of Long-term Operation, the time of this kind of operating mode operation is less, and most of engineering unit is just
Often the operating mode of operating load and underload is more, and agstone demand is less than even much smaller than maximum agstone demand
Amount, once but duff pipe footpath（By maximum agstone amount）Determine, flow velocity of the agstone in pipeline is also determined that.
When agstone conveying capacity becomes hour, air consumption of the conveying air supply still as corresponding to maximum agstone conveying capacity is carried
For because air consumption accordingly can not diminish, otherwise once diminishing, agstone flow velocity being caused to reduce, can so cause to block up
Pipe.Therefore, when agstone air-transport system runs, the waste of more compressed air is often resulted in, is greatly have impact on whole
The energy consumption of individual unit operation.
Utility model content
Goal of the invention of the present utility model is：For above-mentioned problem, there is provided a kind of agstone is air conveying
System.
The technical solution adopted in the utility model is such：A kind of agstone air-transport system, including boiler, powder
Pipe and storehouse pump, the tube cell include the large-scale tube cell of one-level and the small-sized tube cell of one-level, and the storehouse pump includes big storehouse Beng He little storehouses pump, institute
State the large-scale tube cell of big storehouse pump connection one-level, the large-scale tube cell of the one-level splits into two grades of large-scale tube cells of N roots by allotter, described
Little storehouse pump connects the small-sized tube cell of one-level, and the one-level small-size powder Gutron is crossed allotter and splits into two grades of small-sized tube cells of N roots, the N
It is the natural number more than 1, large-scale powder of the boiler left and right sides comprising equivalent adds mouth and the small-sized powder of equivalent to add
Mouthful, the large-scale powder adds mouth to be connected with two grades of large-scale tube cells, and the small-sized powder adds mouth and two grades of small-sized tube cells to connect
Connect.
Further, the large-scale tube cell of 2 one-levels of above-mentioned air-transport system setting is respectively distributed to the boiler left and right sides, left
One-level large-scale tube cell in side is connected to the left side of boiler by 2 two grades of large-scale tube cells that allotter is drawn, and draws another 1 two grades big
Type tube cell is connected to the right side of boiler；The large-scale tube cell of one-level on right side draws the two grades large-scale tube cell connections of 2 by allotter
On the right side of boiler, draw on the left of another 1 two grades large-scale tube cell connection boiler.
Further, the small-sized tube cell of 2 one-levels of above-mentioned air-transport system setting is respectively distributed to the boiler left and right sides, left
Side one-level small-size powder Gutron is crossed allotter 3 two grades of small-sized tube cells of extraction and is all connected on the left of boiler, right side one-level small-size powder
Gutron is crossed allotter 3 two grades of small-sized tube cells of extraction and is all connected on the right side of boiler.
Further, the large-scale tube cell of above-mentioned one-level provides 25 ~ 37.5t/h of agstone, controls actual stone by big storehouse pump
Limestone flour intake, the small-sized tube cell of above-mentioned one-level provide 5.5 ~ 25t/h of agstone, control actual limestone by little storehouse pump
Powder intake, the large-scale tube cell of one-level and the small-sized tube cell of one-level are climbed 23m relative to ground, including 4,45 ° of elbows, 90 ° of elbows
7.
In sum, as a result of above-mentioned technical proposal, the beneficial effects of the utility model are：Agstone pneumatic transporting
Send and used using the collocation of big tubule, greatly simplify tubing, reduce the reducing point of conveying tube cell caliber and tube cell, while
When agstone conveying capacity is reduced, by conveying using small-sized tube cell, air conveying air consumption can be greatlyd save；Using this
Agstone air-transport system, in the case where operation tube cell breaks down, can be met by being substituted using standby tube cell
On the premise of each operating mode of system is exerted oneself, it is ensured that 2 kerbstone limestone flour of boiler enters powder amount and keeps equal.
Description of the drawings
Fig. 1 is the air conveying tube cell arrangement schematic diagram of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawings, this utility model is described in detail.
In order that the purpose of this utility model, technical scheme and advantage become more apparent, below in conjunction with accompanying drawing and enforcement
Example, is further elaborated to this utility model.It should be appreciated that specific embodiment described herein is only to explain
This utility model, is not used to limit this utility model.
As shown in figure 1, the invention discloses a kind of agstone air-transport system, including boiler L, tube cell and storehouse pump
（Storehouse pump is not shown in the accompanying drawings）, the tube cell includes the large-scale tube cell of one-level and the small-sized tube cell of one-level, and the storehouse pump includes big storehouse
Pump and little storehouse pump, the large-scale tube cell of the big storehouse pump connection one-level, the large-scale tube cell of the one-level split into two grades of N roots by allotter
Large-scale tube cell, the small-sized tube cell of the little storehouse pump connection one-level, the one-level small-size powder Gutron crosses allotter, and to split into two grades of N roots little
Type tube cell, the N are the natural number more than 1, and large-scale powder of the boiler L left and right sides comprising equivalent adds mouth and equivalent
Small-sized powder adds mouth, the large-scale powder to add mouth to be connected with two grades of large-scale tube cells, and the small-sized powder adds mouth and two
The small-sized tube cell connection of level.
The air-transport system the large-scale tube cell of one-level 1 is set and the large-scale tube cell of one-level 3 to be respectively distributed to boiler L left
Right both sides, No. 1 No. 1-2 and two grades large-scale tube cell 1-3 of two grades of large-scale tube cells drawn by allotter of the large-scale tube cell of left side one-level
The left side of boiler L number is connected to, another No. 1-1 right side for being connected to boiler L of 1 two grades of large-scale tube cell is drawn；The one-level on right side is big
Type tube cell 3 is drawn two grades of No. 3-2 and two grades of large-scale tube cell large-scale tube cells 3-3 by allotter and is connected on the right side of boiler L, draws
Go out on the left of another 1 two grades large-scale tube cell 3-1 connection boiler L.
The air-transport system the small-sized tube cell of one-level 2 is set and the small-sized tube cell of one-level 4 to be respectively distributed to boiler L left
Right both sides, the small-sized tube cell of left side one-level 2 are drawn 3 two grades of small-sized tube cells by allotter and are all connected on the left of boiler L, right
The small-sized tube cell of side one-level 4 is drawn 3 two grades of small-sized tube cells by allotter and is all connected on the right side of boiler L.
The large-scale tube cell of the one-level provides 25 ~ 37.5t/h of agstone, controls actual agstone by big storehouse pump and is passed through
Amount, the small-sized tube cell of the one-level provide 5.5 ~ 25t/h of agstone, control actual agstone intake by little storehouse pump, and one
The large-scale tube cell of level and the small-sized tube cell of one-level are climbed 23m relative to ground, including 4,45 ° of elbows, 7,90 ° of elbows（In figure not
Illustrate）.
Determine that the desulfuration efficiency needed for operating mode is 70%, 80% and 90%, under boiler BMCR operating modes（100% load）Agstone
Consumption is：
（1）When desulfuration in furnace efficiency is 90%：Design coal agstone consumption：56.81t/h checks coal Calx per stove
Stone powder consumption：65.11 t/h is per stove；
（2）When desulfuration in furnace efficiency is 70%：Design coal agstone consumption：36.27t/h checks coal Calx per stove
Stone powder
Consumption：41.57 t/h is per stove；
（3）When desulfuration in furnace efficiency is 80%：Design coal agstone consumption：~ 46.54t/h checks coal stone per stove
Lime stone
Powder consumption：~ 53.34 t/h are per stove.
Every boiler L adds mouth with 12 powders, and per side, each 6 powders add mouth.Limestone under boiler different load
Powder amount demand is as follows：
When in boiler, desulfuration efficiency is 90%：（1）During 90% load of boiler：Design coal agstone consumption： 51.13t/h
Per stove, coal agstone consumption is checked：58.59t/h per stove；（2）During 80% load of boiler：Design coal agstone consumes
Amount：45.45t/h checks coal agstone consumption per stove：52.09t/h per stove；（3）During boiler≤70% load：Design coal
Plant agstone consumption：≤ 39.77t/h checks coal agstone consumption per stove：≤ 45.58t/h is per stove.
When in boiler, desulfuration efficiency is 80%：（1）During boiler≤90% load：Design coal agstone consumption： ≤
41.88t/h checks coal agstone consumption per stove：≤ 48.01t/h is per stove.
When in boiler, desulfuration efficiency is 70%, under different load, agstone amount is equal：Design coal agstone consumption：
≤ 36.27t/h checks coal agstone consumption per stove：≤ 41.57 t/h are per stove.
Preferably, the desulfuration efficiency of boiler is 90%, during boiler load >=70%, the now agstone delivery system of boiler L
Demand of exerting oneself of uniting is >=50t/h, carries out air conveying, one-level using the large-scale tube cell of one-level 1 and No. 3 operations of the large-scale tube cell of one-level
Small-sized tube cell 2 and the small-sized tube cell of one-level 4 are standby, and the air consumption in course of conveying is 244.9Nm3/min；The desulfurization of boiler
Efficiency is 90%, and during boiler load≤70%, now the agstone induction system of boiler L exerts oneself demand for≤50t/h, adopts one
No. 4 operations of the small-sized tube cell of level 2 and the small-sized tube cell of one-level carry out air conveying, the large-scale tube cell of one-level 1 and the large-scale tube cell of one-level 3
Number standby, the air consumption in course of conveying is 172Nm3/ min, than being saved using the air consumption of the large-scale tube cell of two one-levels
72.9Nm3/min。
Preferably, when the desulfuration efficiency of the boiler is 80%, during boiler load >=90%, the now agstone of boiler L
Induction system exerts oneself demand for >=50t/h, carries out pneumatic transporting using the large-scale tube cell of one-level 1 and No. 3 operations of the large-scale tube cell of one-level
Send, the small-sized tube cell of one-level 2 and the small-sized tube cell of one-level 4 are standby, the air consumption in course of conveying is 244.9Nm3/min；It is described
The desulfuration efficiency of boiler be 80% when, during boiler load≤90%, now the agstone induction system of boiler L exert oneself demand for≤
50t/h, carried out using No. 4 operations of the small-sized tube cell of one-level 2 and the small-sized tube cell of one-level it is air conveying, the large-scale tube cell of one-level 1 and
The large-scale tube cell of one-level 3 is standby, and the air consumption in course of conveying is 172Nm3/ min, than the consumption using the large-scale tube cell of two one-levels
Tolerance saves 72.9Nm3/min。
Preferably, when the boiler desulfurization efficiency is 70%, under any loading condiction of boiler, the now limestone of boiler L
Powder induction system exerts oneself demand for≤50t/h, carries out strength using the small-sized tube cell of one-level 2 and No. 4 operations of the small-sized tube cell of one-level
Conveying, the large-scale tube cell of one-level 1 are standby with the large-scale tube cell of one-level 3, and the air consumption in course of conveying is 172Nm3/ min, than adopting
72.9Nm is saved with the air consumption of the large-scale tube cell of two one-levels3/min。
Boiler operatiopn is required：In the case of different operating mode powder amounts requirements are met, when induction system is normally run, boiler 2
Powder total amount is entered in side should be equal, and charging should be uniform；When induction system produces failure, need to be run using backup line, should at least protect
It is equal that powder total amount is entered in 2 side of card boiler.
Standby regulative mode is as follows：
（1）When one-level No. 1 failure of large-scale tube cell, the small-sized tube cell of standby one-level 2 is enabled, and surge bunker pumps out power, makes pipe 2
The tube cell 1-2 large-scale with two grades in pipe 1 and two grades large-scale tube cell 1-3 that exert oneself summations of exerting oneself are equal；Enable standby one-level small-size powder
Pipe 4, and No. 3-2 and two grades large-scale tube cell 3-3 inlet valve of two grades of large-scale tube cells is closed, under the premise of satisfaction is exerted oneself, it is ensured that
It is equal that powder amount is entered in 2 side of boiler.
（2）When one-level No. 2 failures of small-sized tube cell, the large-scale tube cell of standby one-level 1 is enabled, and closes two grades large-scale tube cell 1-
No. 1 inlet valve, make two grades large-scale tube cell 1-2 and two grades large-scale tube cell 1-3 exert oneself exert oneself with the small-sized tube cell of one-level 2 it is equal.
（3）When small-sized No. 4 failures of tube cell of the large-scale tube cell of one-level 3, one-level, respectively with the large-scale tube cell of one-level 1 and with
And standby pipe regulative mode is identical during small-sized No. 2 failures of tube cell.
Preferred embodiment of the present utility model is the foregoing is only, it is not to limit this utility model, all at this
Any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in this utility model
Protection domain within.
Claims (5)
1. a kind of agstone air-transport system, it is characterised in that：Including boiler, tube cell and storehouse pump, the tube cell includes one
The large-scale tube cell of level and the small-sized tube cell of one-level, the storehouse pump include big storehouse Beng He little storehouses pump, and the big storehouse pump connects the large-scale powder of one-level
Pipe, the large-scale tube cell of the one-level split into two grades of large-scale tube cells of N roots by allotter, and the little storehouse pump connects one-level small-size powder
Pipe, the one-level small-size powder Gutron are crossed allotter and split into two grades of small-sized tube cells of N roots, and the N is the natural number more than 1, described
Large-scale powder of the boiler left and right sides comprising equivalent adds mouth and the small-sized powder of equivalent to add mouth, the large-scale powder to add mouth
It is connected with two grades of large-scale tube cells, the small-sized powder adds mouth to be connected with two grades of small-sized tube cells.
2. agstone air-transport system as claimed in claim 1, it is characterised in that：The air-transport system arranges 2
The large-scale tube cell of root one-level is respectively distributed to the boiler left and right sides, drawn by allotter 2 two grades of the large-scale tube cell of left side one-level
Large-scale tube cell is connected to the left side of boiler, draws the right side that another 1 two grades of large-scale tube cell are connected to boiler；The one-level on right side is large-scale
Tube cell is connected on the right side of boiler by two grades of large-scale tube cells that allotter draws 2, is drawn another 1 two grades large-scale tube cell and is connected pot
On the left of stove.
3. agstone air-transport system as claimed in claim 2, it is characterised in that：The air-transport system arranges 2
The small-sized tube cell of root one-level is respectively distributed to the boiler left and right sides, and left side one-level small-size powder Gutron is crossed allotter and draws 3 two grades little
Type tube cell is all connected on the left of boiler, and right side one-level small-size powder Gutron is crossed allotter 3 two grades of small-sized tube cells of extraction and all connected
It is connected on the right side of boiler.
4. agstone air-transport system as claimed in claim 3, it is characterised in that：The large-scale tube cell of the one-level provides stone
25 ~ 37.5t/h of limestone flour, controls actual agstone intake by big storehouse pump, the small-sized tube cell offer limestone of the one-level
5.5 ~ 25t/h of powder, controls actual agstone intake by little storehouse pump.
5. agstone air-transport system as claimed in claim 4, it is characterised in that：The large-scale tube cell of the one-level and one-level
Small-sized tube cell is climbed 23m relative to ground, including 4,45 ° of elbows, 7,90 ° of elbows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621049593.1U CN206032700U (en) | 2016-09-12 | 2016-09-12 | Limestone flour air conveying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621049593.1U CN206032700U (en) | 2016-09-12 | 2016-09-12 | Limestone flour air conveying system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206032700U true CN206032700U (en) | 2017-03-22 |
Family
ID=58299840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621049593.1U Withdrawn - After Issue CN206032700U (en) | 2016-09-12 | 2016-09-12 | Limestone flour air conveying system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206032700U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106241384A (en) * | 2016-09-12 | 2016-12-21 | 中国电力工程顾问集团西南电力设计院有限公司 | A kind of agstone air-transport system and control method |
-
2016
- 2016-09-12 CN CN201621049593.1U patent/CN206032700U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106241384A (en) * | 2016-09-12 | 2016-12-21 | 中国电力工程顾问集团西南电力设计院有限公司 | A kind of agstone air-transport system and control method |
| CN106241384B (en) * | 2016-09-12 | 2019-03-19 | 中国电力工程顾问集团西南电力设计院有限公司 | A kind of agstone air-transport system and control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170322 Effective date of abandoning: 20190319 |
|
| AV01 | Patent right actively abandoned |