CN107224852A - Ash bucket and measuring method for the measurable material position of circulating fluid bed flue-gas desulfurizing - Google Patents
Ash bucket and measuring method for the measurable material position of circulating fluid bed flue-gas desulfurizing Download PDFInfo
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- CN107224852A CN107224852A CN201710606925.4A CN201710606925A CN107224852A CN 107224852 A CN107224852 A CN 107224852A CN 201710606925 A CN201710606925 A CN 201710606925A CN 107224852 A CN107224852 A CN 107224852A
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- airduct
- material position
- air
- bellows
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- 239000000463 material Substances 0.000 title claims abstract description 46
- 230000003009 desulfurizing effect Effects 0.000 title claims abstract description 45
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 239000003546 flue gas Substances 0.000 title claims abstract description 38
- 239000012530 fluid Substances 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000007789 gas Substances 0.000 claims abstract description 16
- 239000002245 particle Substances 0.000 claims description 22
- 239000002594 sorbent Substances 0.000 claims description 21
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 239000000428 dust Substances 0.000 claims description 9
- 238000005243 fluidization Methods 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 6
- 230000003068 static effect Effects 0.000 claims description 6
- 238000005245 sintering Methods 0.000 claims description 3
- 239000005864 Sulphur Substances 0.000 claims description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims 1
- 238000004064 recycling Methods 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract description 2
- 238000006477 desulfuration reaction Methods 0.000 description 8
- 230000023556 desulfurization Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005987 sulfurization reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/81—Solid phase processes
- B01D53/83—Solid phase processes with moving reactants
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/14—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measurement of pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Biomedical Technology (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The present invention relates to level gauging technical field, the ash bucket and measuring method of a kind of measurable material position for circulating fluid bed flue-gas desulfurizing are disclosed.Ash bucket body of the present invention is enclosed by the ash bucket side plate being obliquely installed and formed, and forms the small bucket shape space of big lower mouth suitable for reading；The longitudinal section of ash bucket body bottom portion is in del；It is additionally provided with steady wind system in ash bucket body, steady wind system includes being arranged on air distribution plate above inclined floor and along the horizontally disposed bellows of ash bucket side plate；Bellows are closed at both ends, hollow tri-prismoid, and a bellows side wall is fitted fixation with ash bucket side plate, and air port mesh sheet is set down；The air outlet of fluidized air blower is connected with the first airduct, gas gauge is in series with first airduct, the air outlet of first airduct is connected with the second airduct and the 3rd airduct respectively, second airduct air outlet is connected with the air inlet on inclined floor, and the 3rd airduct air outlet stretches into ash bucket side plate and connected with the air inlet of bellows.Simple in construction, measurement accuracy of the invention is high, stability is strong.
Description
Technical field
The present invention relates to level gauging technical field, more particularly to a kind of surveying for circulating fluid bed flue-gas desulfurizing
Measure the ash bucket and measuring method of material position.
Background technology
Circulating Fluidized Bed Flue Gas Desulfurization Technology belongs to semi-dry process flue gas desulphurization field.In circulating fluid bed reactor, powder
Shape solid desulfurating agent is vigorously mixed in fluid bed as bed and pending flue gas and occurs desulphurization reaction, and flue gas after desulfurization is taken
Band desulfurizing agent leaves fluid bed and enters dust arrester, and desulfurizing agent is separated from purifying smoke in dust arrester and falls into ash
Bucket, then fluid bed is re-entered from ash bucket, realize the circulation of desulfurizing agent bed material.
The desulfuration efficiency of original Circulating Fluidized Bed Flue Gas Desulfurization Technology is about 93%.It is continuous recently as environmental regulation
Sternly, the requirement of power-plant flue gas deep purifying is improved constantly, and Circulating Fluidized Bed Flue Gas Desulfurization Technology is also continuously available improvement, at present
The desulfuration efficiency of Circulating Fluidized Bed Flue Gas Desulfurization Technology is up to 97%.While desulfuration efficiency is improved, various parts can
Also improved therewith with the requirement in terms of controllability by property.
Traditionally, the level gauging of desulfurizing agent uses weight dropper charge level indicator or radio frequency level-sensing device in ash bucket.Yet with ash bucket
Bottom condition of work is severe, and use time is longer, and reliability and the measurement accuracy of these level gauges occur larger
Deviation, and maintenance difficulty is larger, cost is higher.
The content of the invention
The present invention provides that a kind of simple in construction, measurement accuracy is high, stability by force be used for circulating fluid bed flue-gas desulfurizing
The ash bucket and measuring method of measurable material position.
The technical problem of solution is：The level-sensing device used in existing circulating sulfuration bed flue gas desulphurization is disliked because of working environment
Bad, with the extension of use time, the accuracy and stability of measurement can not be protected, and the maintenance difficulty in later stage is big, into
This height.
In order to solve the above technical problems, the present invention is adopted the following technical scheme that：
Ash bucket of the present invention for the measurable material position of circulating fluid bed flue-gas desulfurizing, including ash bucket body, the ash bucket
Its top feed mouthful of body is connected with the discharging opening of dust arrester, and the discharging opening in bottom plate center is returned by returning charge pipeline and desulfurizing tower
Material mouth is connected；Also include steady wind system, supply air system and control system；The ash bucket body is enclosed by the ash bucket side plate being obliquely installed
Conjunction is formed, and forms the small bucket shape space of big lower mouth suitable for reading；The longitudinal section of the ash bucket body bottom portion is in del, including two pairs
Claim uniformly to offer air inlet on the inclined floor set, inclined floor；Steady wind system is additionally provided with ash bucket body, it is described steady
Wind system includes being arranged on air distribution plate above inclined floor and along the horizontally disposed bellows of ash bucket side plate；The bellows are two ends
Closing, hollow tri-prismoid, are enclosed with an air port mesh sheet by two bellows side walls and formed, and two bellows side wall junctions are along wind
Case bearing of trend offers one group of air inlet, and a bellows side wall is fitted fixation with ash bucket side plate, and air port mesh sheet is set down；Institute
Stating supply air system includes fluidized air blower, magnetic valve and gas gauge, and the air outlet of fluidized air blower is connected with the first airduct, and first
Magnetic valve and gas gauge are sequentially connected in series on airduct, the air outlet of the first airduct connects with the second airduct and the 3rd airduct respectively
Connect, the second airduct air outlet is connected with the air inlet on inclined floor, the 3rd airduct air outlet stretches into ash bucket side plate and bellows
Air inlet is connected；The signal output part of the gas gauge is electrically connected with the signal input part of control system, the magnetic valve
Signal input part electrically connected with the signal output part of control system, the signal output part of magnetic valve and the signal of control system are defeated
Enter end electrical connection.
Ash bucket of the present invention for the measurable material position of circulating fluid bed flue-gas desulfurizing, further, the ash bucket side plate
Including a pair of long slabs and a pair of short slabs, it is symmetrical arranged.
Ash bucket of the present invention for the measurable material position of circulating fluid bed flue-gas desulfurizing, further, the ash bucket side plate
In long slab and short slab and the angle of horizontal direction be for 50-70 °
Ash bucket of the present invention for the measurable material position of circulating fluid bed flue-gas desulfurizing, further, the inclined floor
Angle with horizontal direction is 5-10 °.
Ash bucket of the present invention for the measurable material position of circulating fluid bed flue-gas desulfurizing, further, the air port mesh sheet
It is made of sintering silk screen.
Ash bucket of the present invention for the measurable material position of circulating fluid bed flue-gas desulfurizing, further, the two bellows side
The width of wall is consistent, and the angle between biside plate is 25-35 °.
Ash bucket of the present invention for the measurable material position of circulating fluid bed flue-gas desulfurizing, further, second airduct
Consistent with the caliber of the 3rd airduct, the ratio between caliber of the first airduct and the second airduct is 1.5-2：1.
Material level measuring method of the present invention for the ash bucket of the measurable material position of circulating fluid bed flue-gas desulfurizing, including it is following
Step：
Part I, material position demarcation：
Step 1: sorbent particle is fallen into ash bucket body by dust arrester, fluidized wind is sent into first by fluidized air blower
Airduct, sends into ash bucket body from inclined floor and ash bucket side plate respectively by the second airduct and the 3rd airduct；Bottom in ash bucket
Pressure be more than pressure inside desulfurizing tower, sorbent particle enters desulfurizing tower with fluidized wind, realizes the circulation of sorbent particle
Utilize；
Step 2: electromagnetic valve for adjusting, makes the intrinsic fluidized wind flow velocity of ash bucket be more than the critical fluidisation speed of sorbent particle
Degree, sorbent particle is in fluidization, keeps fluidized wind air quantity stable, demarcates air quantity；
Step 3: change ash bucket body in desulfurizing agent amount, obtain sorbent particle material position and blast relation it is as follows：
W=PSAA+C (1)
In formula：W is the gross weight of sorbent particle in ash bucket, N；
PSAThe static pressure in the first airduct shown for gas gauge, Pa；
A is the area of ash bucket bed cross section, m2；
C is constant, and span is 10-1-106；
Part II, level gauging：
The fluidized wind of demarcation air quantity is passed through into ash bucket body, pressure signal, control system are gathered using gas gauge
Pressure signal is converted into level signals, material position in out ash bucket is shown on control system display.
Material level measuring method of the present invention for the ash bucket of the measurable material position of circulating fluid bed flue-gas desulfurizing, further
, the constant C in step 3 in formula (1) is determined using formula (2)：
C=(PDA-PSC-PDC-δPAB)A (2)
In formula：PDAFor the dynamic pressure in the first airduct, kPa；
PSCFor the static pressure at ash bucket top inlet, kPa；
PDCFor the dynamic pressure at ash bucket top inlet, kPa；
δPABTo arrive the pressure loss of hopper bottom discharge outlet, kPa in the first airduct.
The present invention is used for the ash bucket of the measurable material position of circulating fluid bed flue-gas desulfurizing compared with prior art, with as follows
Beneficial effect：
The present invention enters for the ash bucket of the measurable material position of circulating fluid bed flue-gas desulfurizing to the fluidisation wind system in ash bucket
Go improvement so that the fluidized wind in ash bucket can be uniformly distributed, not only reduce the phenomenon that ash bucket is blocked, and ash can be caused
Sorbent particle in bucket is uniformly fluidized wind picking-up, is in metastable fluidization in ash bucket, is measured using in airduct
Obtained blast represents the material position in ash bucket；This measuring method result accuracy rate is high, and error rate is small, and stability is good, maximum limit
That spends reduces the influence that severe use environment is caused to equipment.
The present invention is respectively provided with air outlet device in the week side of boss wall of ash bucket four and bottom, coordinates the stream of the fluidized wind of all directions
Dynamic angle, makes its cooperation, and stable, controllable blast environment relatively can be formed in ash bucket, ash bucket material position is substantially increased
The Stability and veracity of measurement.
Ash bucket to the measurable material position for circulating fluid bed flue-gas desulfurizing of the invention and measurement below in conjunction with the accompanying drawings
Method is described further.
Brief description of the drawings
Front views of the Fig. 1 for the present invention for the ash bucket of the measurable material position of circulating fluid bed flue-gas desulfurizing；
Fig. 2 is application system schematic diagram of the invention；
Fig. 3 is the side view of ash bucket；
Fig. 4 is the top view of ash bucket；
Fig. 5 is the Longitudinal cross section schematic of bellows.
Reference：
1- ash bucket bodies；11- inclined floors；12- ash bucket side plates；2- air distribution plates；3- bellows；31- air ports mesh sheet；32- wind
Case side wall；4- fluidized air blowers；The airducts of 51- first；The airducts of 52- second；The airducts of 53- the 3rd；61- gas gauges；62- electromagnetism
Valve；7- dust arresters；8- desulfurizing towers；9- returning charge pipelines.
Embodiment
As Figure 1-Figure 4, the present invention includes ash bucket for the ash bucket of the measurable material position of circulating fluid bed flue-gas desulfurizing
Body 1, steady wind system, supply air system and control system；As shown in Fig. 2 its top feed mouthful and dust arrester 7 of ash bucket body 1
Discharging opening connection, bottom plate center discharging opening connected by returning charge pipeline 9 with the returning charge mouth of desulfurizing tower 8；Ash bucket body 1 is by tilting
The ash bucket side plate 12 of setting, which is enclosed, to be formed, and ash bucket side plate 12 includes a pair of long slabs and a pair of short slabs, is symmetrical arranged, and forms suitable for reading big
The small bucket shape space of lower mouth, long slab and short slab and the angle of horizontal direction are for 50-70 °；The longitudinal section of the bottom of ash bucket body 1
In del, including two symmetrically arranged inclined floors 11, uniformly air inlet, inclined floor 11 are offered on inclined floor 11
Angle with horizontal direction is 5-10 °；Steady wind system is provided with ash bucket body 1, steady wind system includes being arranged on inclined floor
The air distribution plate 2 of 11 tops and along the horizontally disposed bellows 3 of ash bucket side plate 12；Air distribution plate 2 is adapted with the bottom of ash bucket body 1；Such as
Shown in Fig. 5, bellows 3 are closed at both ends, hollow tri-prismoid, enclosed by two bellows side walls 32 and an air port mesh sheet 31 and
Into the junction of two bellows side wall 32 offers one group of air inlet along the bearing of trend of bellows 3, and air port mesh sheet 31 is using sintering silk screen system
A bellows side wall 32 into, bellows 3 is fitted fixation with ash bucket side plate 12, and air port mesh sheet 31 is set down, two bellows side walls 32
Width it is consistent, the angle between two bellows side walls 32 is 25-35 °；Supply air system includes fluidized air blower 4 and gas gauge
61, the air outlet of fluidized air blower 4 is connected with the first airduct 51, and magnetic valve 62 and gas pressure have been sequentially connected in series on the first airduct 51
Meter 61, the air outlet of the first airduct 51 is connected with the second airduct 52 and the 3rd airduct 53 respectively, and the air outlet of the second airduct 52 is with inclining
Air inlet connection on inclined bottom plate 11, the air outlet of the 3rd airduct 53 stretches into ash bucket side plate 12 and connected with the air inlet of bellows 3；Gas
The signal output part of pressure gauge 61 is electrically connected with the signal input part of control system, the caliber of the second airduct 52 and the 3rd airduct 53
Unanimously, the ratio between caliber of the first airduct 51 and the second airduct 52 is 1.5-2：1；The signal input part and control system of magnetic valve 62
Signal output part electrical connection, the signal output part of magnetic valve 62 electrically connects with the signal input part of control system.
Material level measuring method of the present invention for the ash bucket of the measurable material position of circulating fluid bed flue-gas desulfurizing, is specifically included
Following steps：Comprise the following steps：
Part I, material position demarcation：
Step 1: sorbent particle is fallen into ash bucket body 1 by dust arrester 7, fluidized air blower 4 is by fluidized wind feeding the
One airduct 51, ash bucket body 1 is sent into by the second airduct 52 and the 3rd airduct 53 from inclined floor 11 and ash bucket side plate 12 respectively
It is interior；The pressure of bottom is more than the pressure inside desulfurizing tower 8 in ash bucket, and sorbent particle enters desulfurizing tower 8 with fluidized wind, realizes de-
Sulphur agent particle is recycled；
Step 2: electromagnetic valve for adjusting 62, makes the fluidized wind flow velocity in ash bucket body 1 be more than the critical fluidisation of sorbent particle
Speed, sorbent particle is in fluidization, keeps fluidized wind air quantity stable, demarcates air quantity；
Step 3: change ash bucket body in desulfurizing agent amount, obtain sorbent particle material position and blast relation it is as follows：
W=PSAA+C (1)
In formula：W is the gross weight of sorbent particle in ash bucket, N；
PSAThe static pressure in the first airduct shown for gas gauge, Pa；
A is the area of ash bucket bed cross section, m2；
C is constant, and span is 10-1-106；
Part II, level gauging：
The fluidized wind of demarcation air quantity is passed through into ash bucket body, pressure signal, control system are gathered using gas gauge
Pressure signal is converted into level signals, material position in out ash bucket is shown on control system display.
Wherein constant C is determined using formula (2)：
C=(PDA-PSC-PDC-δPAB)A (2)
In formula：PDAFor the dynamic pressure in the first airduct 51, Pa；
PSCFor the static pressure at ash bucket top inlet, Pa；
PDCFor the dynamic pressure at ash bucket top inlet, Pa；
δPABTo arrive the pressure loss of hopper bottom discharge outlet, Pa in the first airduct 51.
Embodiment described above is only that the preferred embodiment of the present invention is described, not to the model of the present invention
Enclose and be defined, on the premise of design spirit of the present invention is not departed from, technical side of the those of ordinary skill in the art to the present invention
In various modifications and improvement that case is made, the protection domain that claims of the present invention determination all should be fallen into.
Claims (9)
1. the ash bucket of the measurable material position for circulating fluid bed flue-gas desulfurizing, including ash bucket body (1), the ash bucket body
(1) its top feed mouthful is connected with the discharging opening of dust arrester (7), and the central discharging opening of bottom plate is by returning charge pipeline (9) with taking off
Sulphur tower (8) returning charge mouth is connected；It is characterized in that：Also include steady wind system, supply air system and control system；The ash bucket body
(1) enclosed and formed by the ash bucket side plate (12) being obliquely installed, form the small bucket shape space of big lower mouth suitable for reading；The ash bucket body
(1) longitudinal section of bottom is in del, including two symmetrically arranged inclined floors (11), and inclined floor is uniformly opened up on (11)
There is air inlet；Steady wind system is additionally provided with ash bucket body (1), the steady wind system includes being arranged on above inclined floor (11)
Air distribution plate (2) and along ash bucket side plate (12) horizontally disposed bellows (3)；The bellows (3) are closed at both ends, hollow Rhizoma Sparganii
Cylinder, is enclosed with an air port mesh sheet (31) by two bellows side walls (32) and formed, and two bellows side walls (32) junction is along bellows
(3) bearing of trend offers one group of air inlet, and a bellows side wall (32) of bellows (3) is fitted fixation with ash bucket side plate (12),
Air port mesh sheet (31) is set down；The supply air system includes fluidized air blower (4), magnetic valve (62) and gas gauge (61),
The air outlet of fluidized air blower (4) is connected with the first airduct (51), magnetic valve (62) has been sequentially connected in series on the first airduct (51) gentle
Body pressure gauge (61), the air outlet of the first airduct (51) is connected with the second airduct (52) and the 3rd airduct (53) respectively, the second wind
Pipe (52) air outlet connected with the air inlet on inclined floor (11), the 3rd airduct (53) air outlet stretch into ash bucket side plate (12) and
The air inlet connection of bellows (3)；The signal output part of the gas gauge (61) and the signal input part of control system are electrically connected
Connect, the signal input part of the magnetic valve (62) is electrically connected with the signal output part of control system, and the signal of magnetic valve (62) is defeated
Go out end to electrically connect with the signal input part of control system.
2. the ash bucket of the measurable material position according to claim 1 for circulating fluid bed flue-gas desulfurizing, it is characterised in that：
The ash bucket side plate (12) includes a pair of long slabs and a pair of short slabs, is symmetrical arranged.
3. the ash bucket of the measurable material position according to claim 2 for circulating fluid bed flue-gas desulfurizing, it is characterised in that：
Long slab and short slab and the angle of horizontal direction in the ash bucket side plate (12) are for 50-70 °.
4. the ash bucket of the measurable material position according to claim 1 for circulating fluid bed flue-gas desulfurizing, it is characterised in that：
The angle of the inclined floor (11) and horizontal direction is 5-10 °.
5. the ash bucket of the measurable material position according to claim 1 for circulating fluid bed flue-gas desulfurizing, it is characterised in that：
The air port mesh sheet (31) is made of sintering silk screen.
6. the ash bucket of the measurable material position according to claim 1 for circulating fluid bed flue-gas desulfurizing, it is characterised in that：
The width of two bellows side wall (32) is consistent, and the angle between two bellows side walls (32) is 25-35 °.
7. the ash bucket of the measurable material position according to claim 1 for circulating fluid bed flue-gas desulfurizing, it is characterised in that：
Second airduct (52) is consistent with the caliber of the 3rd airduct (53), the ratio between caliber of the first airduct (51) and the second airduct (52)
For 1.5-2：1.
8. the material position of the ash bucket of the measurable material position for circulating fluid bed flue-gas desulfurizing described in claim 1-7 any one
Measuring method, it is characterised in that：Comprise the following steps：
Part I, material position demarcation：
Step 1: sorbent particle is fallen into ash bucket body (1) by dust arrester (7), fluidized air blower (4) sends into fluidized wind
First airduct (51), send from inclined floor (11) and ash bucket side plate (12) respectively by the second airduct (52) and the 3rd airduct (53)
Enter in ash bucket body (1)；The pressure of bottom is more than the internal pressure of desulfurizing tower (8) in ash bucket, and sorbent particle enters with fluidized wind
Enter desulfurizing tower (8), realize recycling for sorbent particle；
Step 2: electromagnetic valve for adjusting (62), makes the fluidized wind flow velocity in ash bucket body (1) be more than the critical fluidisation of sorbent particle
Speed, sorbent particle is in fluidization, keeps fluidized wind air quantity stable, demarcates air quantity；
Step 3: change ash bucket body (1) interior desulfurizing agent amount, obtain sorbent particle material position and blast relation it is as follows：
W=PSAA+C (1)
In formula：W is the gross weight of sorbent particle in ash bucket, N；
PSAThe static pressure in the first airduct shown for gas gauge, Pa；
A is the area of ash bucket bed cross section, m2；
C is constant, and span is 10-1-106；
Part II, level gauging：
The fluidized wind of demarcation air quantity is passed through into ash bucket body (1), pressure signal is gathered using gas gauge, control system will
Pressure signal is converted into level signals, and material position in out ash bucket is shown on control system display.
9. the level gauging side of the ash bucket of the measurable material position according to claim 8 for circulating fluid bed flue-gas desulfurizing
Method, it is characterised in that：Constant C in step 3 in formula (1) is determined using formula (2)：
C=(PDA-PSC-PDC-δPAB)A (2)
In formula：PDAFor the dynamic pressure in the first airduct, Pa；
PSCFor the static pressure at ash bucket top inlet, Pa；
PDCFor the dynamic pressure at ash bucket top inlet, Pa；
δPABTo arrive the pressure loss of hopper bottom discharge outlet, Pa in the first airduct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710606925.4A CN107224852A (en) | 2017-07-24 | 2017-07-24 | Ash bucket and measuring method for the measurable material position of circulating fluid bed flue-gas desulfurizing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710606925.4A CN107224852A (en) | 2017-07-24 | 2017-07-24 | Ash bucket and measuring method for the measurable material position of circulating fluid bed flue-gas desulfurizing |
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| CN107224852A true CN107224852A (en) | 2017-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710606925.4A Pending CN107224852A (en) | 2017-07-24 | 2017-07-24 | Ash bucket and measuring method for the measurable material position of circulating fluid bed flue-gas desulfurizing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107720297A (en) * | 2017-10-20 | 2018-02-23 | 福建龙净脱硫脱硝工程有限公司 | A kind of material position balance system and control method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204723938U (en) * | 2015-06-30 | 2015-10-28 | 重庆赛迪热工环保工程技术有限公司 | A kind of ash bucket for recirculating fluidized bed flue gas purifying technique |
| CN207056290U (en) * | 2017-07-24 | 2018-03-02 | 南京龙源环保有限公司 | Ash bucket for the measurable material position of circulating fluid bed flue-gas desulfurizing |
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2017
- 2017-07-24 CN CN201710606925.4A patent/CN107224852A/en active Pending
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| CN107720297A (en) * | 2017-10-20 | 2018-02-23 | 福建龙净脱硫脱硝工程有限公司 | A kind of material position balance system and control method |
| CN107720297B (en) * | 2017-10-20 | 2019-05-31 | 福建龙净脱硫脱硝工程有限公司 | A kind of material position balance system and control method |
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