CN107986251B - A kind of yellow phosphorus electric furnace tail gas extract system and yellow phosphoric tail gas air-exhaust method - Google Patents
A kind of yellow phosphorus electric furnace tail gas extract system and yellow phosphoric tail gas air-exhaust method Download PDFInfo
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- CN107986251B CN107986251B CN201711065674.XA CN201711065674A CN107986251B CN 107986251 B CN107986251 B CN 107986251B CN 201711065674 A CN201711065674 A CN 201711065674A CN 107986251 B CN107986251 B CN 107986251B
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- tail gas
- electric furnace
- yellow phosphorus
- frequency conversion
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- OBSZRRSYVTXPNB-UHFFFAOYSA-N tetraphosphorus Chemical compound P12P3P1P32 OBSZRRSYVTXPNB-UHFFFAOYSA-N 0.000 title claims abstract description 76
- 239000000284 extract Substances 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000006243 chemical reaction Methods 0.000 claims abstract description 64
- 230000001105 regulatory effect Effects 0.000 claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- 230000008676 import Effects 0.000 claims description 11
- 238000012544 monitoring process Methods 0.000 claims description 9
- 230000007812 deficiency Effects 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 7
- 238000000605 extraction Methods 0.000 claims description 7
- 238000005259 measurement Methods 0.000 claims description 7
- 238000010992 reflux Methods 0.000 claims description 6
- 230000001276 controlling effect Effects 0.000 claims description 5
- 238000002955 isolation Methods 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 2
- 238000005303 weighing Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 4
- 239000011574 phosphorus Substances 0.000 abstract description 4
- 230000008030 elimination Effects 0.000 abstract 1
- 238000003379 elimination reaction Methods 0.000 abstract 1
- 238000000746 purification Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 145
- 230000003139 buffering effect Effects 0.000 description 3
- 230000002045 lasting effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002367 phosphate rock Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 206010044565 Tremor Diseases 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/02—Preparation of phosphorus
- C01B25/027—Preparation of phosphorus of yellow phosphorus
-
- 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
Abstract
The invention discloses a kind of yellow phosphorus electric furnace tail gas extract system and yellow phosphoric tail gas air-exhaust methods, it is related to phosphorus production field, yellow phosphorus electric furnace tail gas extract system of the invention is connected with the outlet of yellow phosphorus electric furnace gas-guide tube, including sequentially connected pressure transmitter, furnace pressure sensor, purification device, surge tank, frequency conversion fan and gas chamber.Yellow phosphorus electric furnace tail gas extract system of the invention can control the tail gas pumpability of frequency conversion fan by the signal of pressure transmitter, continuous-stable that tail gas is pumped is ensured to regulating valve real-time control by furnace pressure sensor, then it realizes the safe and effective adjusting that tail gas is pumped, and will be collected after taken out tail gas clean-up and be used to produce；Yellow phosphoric tail gas air-exhaust method of the invention, which is able to achieve, pumps the whole of yellow phosphorus electric furnace tail gas, and flare elimination is simultaneously realized to the target of yellow phosphorus electric furnace tail gas full dose safe transport, improves the economic value that yellow phosphoric tail gas utilizes.
Description
Technical field
The present invention relates to yellow phosphoric tail gas process fields, and in particular to a kind of yellow phosphorus electric furnace tail gas extract system and yellow phosphoric tail gas
Air-exhaust method.
Background technique
The production of yellow phosphorus is mainly electric furnace process, after rock phosphate in powder, silica and coke are mixed with certain particle size by a certain percentage
Electric furnace is added, using thermogenetic 1200 ° of the high temperature of electricity, decomposes rock phosphate in powder fusing and generates P2O5, then with coke occur oxidation-
Reduction reaction obtains elemental phosphorous steam, finally obtains finished product through supercooling, separating technology.In the process, yellow phosphorus electric furnace must
It must keep sealing in electric furnace and producing under slight positive pressure state.During phosphorus production, a large amount of tail gas can be generated, in reality
The yellow phosphoric tail gas that yellow phosphorus electric furnace generates in the production of border is mainly used for heat source or the unstripped gas as one chemical industry of carbon uses, but still has
Residual exhaust fires idle discharge directly in the form of torch to be put, it is difficult to all effective uses.Main reason is that: yellow phosphorus electric furnace from
When smelting, due to the working of a furnace and production in regular slagging-off factor, cause produced tail gas amount in furnace constantly to change fluctuation, furnace
Pressure is very unstable, when pumping yellow phosphoric tail gas with valve manual operations or general air extractor, yellow phosphorus electric furnace negative pressure is easily caused to transport
Row enters extraneous air and generates explosion in furnace, causes serious accident, in order to ensure safety in production, phosphorus production enterprise
When industry is to waste gas utilization, compared with produced tail gas total amount, the extraction amount of tail gas is less, causes tail gas surplus capacity very big, and will
The extra tail gas point fire row direct emission in this part, part phosphorus production enterprise influence due to being evacuated safety problem, or even to tail gas
Directly not utilize, all igniting discharge, this has resulted in wasting for thermal energy, while in tail gas containing a large amount of dust and
Sour gas, burning and exhausting have seriously polluted the environment again.
Chinese patent CN201320027350.8 monitors tail gas pressure by the way that a pressure transmitter is arranged at the total water seal of tail gas
Power and real-time control exhaust fan power, reaching prevents the speed of exhaust and the produced tail gas amount of electric furnace from mismatching, and causes to bear in electric furnace
The effect of pressure.But the device is only primary prospect, is had the following problems in practical applications:
1, the pressure transmitter of the device is set at tail gas water seal, the pressure of measurement and still not accurate enough, feedback
There are the corresponding time difference between numerical value and the suction pressure numerical value that need to be adjusted to, change greatly in the produced tail gas amount of electric furnace such as electric furnace
Tail gas amount die-offs when slagging tap or when electric furnace is shut down suddenly can not be effectively treated, and cannot achieve the continuous work of tail gas extract system
Make, can not meet production requirement, making the scenario, there are corresponding security risks.
2, the device has preset tail gas air pressure standard value, only leans on gas pressure measurement and air pressure mark to the control of suction pressure
Quasi- value relatively realizes that, without dynamic corrections and buffer protection mechanism, the timeliness controlled, accuracy, security and stability are all
It is not able to satisfy actual demand.
3, the device is only pumped part to tail gas and is improved, but cannot achieve at the extraction for all generating tail gas
Reason, the residual exhaust of extraction still needs to emptying discharge or burning is torch, causes thermal energy waste and environmental issue.
Summary of the invention
In view of the deficiencies in the prior art, the purpose of the present invention is to provide a kind of yellow phosphorus electric furnace tail gas extract systems
And yellow phosphoric tail gas air-exhaust method, reach the same of the adjustment yellow phosphorus electric furnace speed of exhaust and the flux matched function of the produced tail gas of electric furnace in real time
When, realize that the full dose of tail gas extracts, the thermal energy of tail gas or the effect of chemical energy are extracted in effective use.
To achieve the above objectives, the technical solution adopted by the present invention is that:
A kind of yellow phosphorus electric furnace tail gas extract system is connected with the outlet of yellow phosphorus electric furnace gas-guide tube, including pressure transmitter, tail
Air purifying apparatus, surge tank, frequency conversion fan and gas chamber, the gas-guide tube outlet of the yellow phosphorus electric furnace, exhaust gas cleaner, buffering
Tank, frequency conversion fan and gas chamber are sequentially connected to using exhaust pipe；
The surge tank is for collecting redundancy gas and the gas that replenishes the supply in pipeline air pressure deficiency, the surge tank
On the exhaust pipe between the frequency conversion fan and the exhaust gas cleaner；
The pressure transmitter is set to the outlet connection of the gas-guide tube of the exhaust pipe and the yellow phosphorus electric furnace, is used for
Measure the air pressure of the gas-guide tube outlet connection of the exhaust pipe and the yellow phosphorus electric furnace；
The frequency conversion fan is connect with the pressure transmitter signal, and the revolving speed of the frequency conversion fan becomes according to the pressure
The pressure value for sending device to measure adjusts in real time.
On the basis of above scheme, the surge tank is connected by exhaust pipe with the air inlet of frequency conversion fan, described
Gas chamber be connected with the outlet of frequency conversion fan by exhaust pipe, frequency conversion fan import both ends are connected at least two connections
Pipe, at least two communicating pipe and the tail gas pipeline constitute circulation line channel, are all provided at least two communicating pipe
There is the regulating valve for controlling gas in pipelines flow.
On the basis of above scheme, described communicating pipe one end is connected with the surge tank, the other end and the frequency conversion wind
The exhaust pipe of machine outlet is connected.
It further include a furnace pressure sensor on the basis of above scheme, the furnace pressure sensor is set to the tail gas clean-up
On the exhaust pipe of device entrance, it is connect for exhaust pipe described in real-time monitoring with the exhaust gas cleaner import
The air pressure at place, and real-time control signal is issued to regulating valve by operation, the regulating valve and the furnace pressure on the communicating pipe pass
Sensor signal connection.
On the basis of above scheme, the exhaust gas cleaner includes the Safety water seal, air-washer, vapour being sequentially connected
Water separation device and isolation water seal, the Safety water seal are set between the exhaust pipe and the air-washer, institute
Stating air-washer includes the water washing device and alkaline cleaner being sequentially connected, and the air-washer is set to the Safety water seal and described
On pipeline between steam-water separator, the isolation water seal is set between the water separator and the surge tank.
On the basis of above scheme, a controller is additionally provided on the yellow phosphorus electric furnace, the controller is for monitoring institute
Yellow phosphorus electric furnace operating current signal is stated, and controls the frequency conversion fan in the yellow phosphorus electric furnace operating current signal interruption and stops
Machine.
On the basis of above scheme, be additionally provided with an exhausting pipeline at the exhaust gas cleaner, the exhausting pipeline with
The exhaust gas cleaner gas outlet is connected.
The present invention also provides a kind of yellow phosphoric tail gas air-exhaust method based on yellow phosphorus electric furnace tail gas extract system as described above,
The following steps are included:
S1, exhaust pipe described in the pressure transmitter measurement and the yellow phosphorus electric furnace gas-guide tube outlet connection are used
Air pressure, and air pressure signal is transmitted to the frequency conversion fan；
Air pressure signal adjusts operating power in real time based on the received for S2, the frequency conversion fan, and the yellow phosphorus electric furnace is kept to lead
The air pressure of tracheae outlet connection is to extract under micro-positive pressure to tail gas；
S3, the frequency conversion fan store the yellow phosphoric tail gas of extraction by after exhaust gas cleaner, being passed to the gas chamber,
And each tail gas user is transmitted separately to according to user demand.
On the basis of above scheme, frequency conversion fan import both ends be arranged at least two communicating pipes, it is described at least
Two communicating pipes and the tail gas pipeline constitute circulation line channel, are respectively provided at least two communicating pipe for controlling
The regulating valve of gas in pipelines flow；The import junction of the exhaust pipe and exhaust gas cleaner is provided with furnace pressure sensing
Device for the air pressure of exhaust pipe described in real-time monitoring and exhaust gas cleaner import junction, and is exchanged by operation
It saves valve and issues real-time control signal, signal connection between the regulating valve on the furnace pressure sensor and the communicating pipe；It is described
Regulating valve carries out dynamic opening and closing based on the control signal of the furnace pressure sensor, and the gas of redundancy is led by the communicating pipe
Enter into the surge tank, the surge tank is used to collect redundancy gas, and using the redundancy gas after collection as reflux
Make-up gas be input in frequency conversion fan again, adjustment is balanced to exhaust pipe air pressure change.
On the basis of above scheme, the specific steps of flow in the regulating valve control pipeline are as follows: furnace pressure sensor is surveyed
Furnace pressure signal p is measured, and is calculated and preset value p in real time0Between furnace pressure signal variation delta p (Δ p=p-p0)；The connection
Regulating valve on pipe receives the control signal p of the furnace pressure sensor, as Δ p < 0, frequency conversion fan inlet and outlet both ends
Regulating valve on communicating pipe is opened；As Δ p >=Δ p0When, regulating valve is closed.
Compared with the prior art, the advantages of the present invention are as follows:
(1) yellow phosphorus electric furnace tail gas extract system of the invention is using variable-frequency motor instead of the pressure inverting in existing equipment
Device-frequency converter-electric system realizes the more accurate adjustment of the yellow phosphorus electric furnace speed of exhaust and tail gas formation speed matching feature,
Correlation setting difference eliminates fed back values and the suction pressure number that need to be adjusted to during the adjustment of the yellow phosphorus electric furnace speed of exhaust
The influence of corresponding time difference between value improves blower to the real time response speed of pumping control.
(2) yellow phosphorus electric furnace tail gas extract system of the invention is real by the way that furnace pressure sensor is arranged on exhaust pipe road
When monitor the variation of tail gas pressure, to there are phases between the pipeline pressure numerical value and the suction pressure numerical value that is adjusted to of monitoring feedback
It answers exhaust pipe air pressure change caused by the time difference to carry out real-time operation, provides control signal, regulating valve is based on furnace pressure sensor
Control signal carry out in real time dynamic opening and closing adjustment, and by communicating pipe will from frequency conversion fan out redundancy gas imported into
In surge tank, reflux is formed, tail gas residual quantity when for making up because of pipeline air pressure deficiency reaches the mesh that balance tail gas pumps pressure
, realize the continuity of tail gas extract system, it is ensured that when air pressure shakiness, tail gas amount die-off caused by fluctuating because of the working of a furnace
The steady and continuous of system is run, and meets production requirement, then realizes the safe and effective adjusting that tail gas is pumped.
(3) yellow phosphorus electric furnace tail gas extract system of the invention on yellow phosphorus electric furnace by being additionally provided with a controller, controller
Frequency conversion fan is controlled for monitoring the yellow phosphorus electric furnace operating current signal, and in yellow phosphorus electric furnace operating current signal interruption
It shuts down.
(4) yellow phosphorus electric furnace tail gas extract system of the invention can to extract tail gas be recycled, not only by water seal,
Alkali cleaning and etc., it is ensured that while safe transport, tail gas pollution is reduced, simultaneously because ensure that the full dose of tail gas from electric furnace connects safely
Continuous stabilization is pumped, and has been eliminated flare discharge present in existing yellow phosphorus electric furnace waste gas utilization system, has been realized the collection of yellow phosphoric tail gas
The thermal energy or chemical energy of tail gas are extracted in middle recycling and heat energy utilization, effective use.
(5) yellow phosphorus electric furnace tail gas air-exhaust method of the invention passes through setting surge tank, inner circulating tube line structure, exhausting pipeline
And a variety of fortuitous events monitoring adjustment, can occur electric furnace power-off, fan parking, gas chamber collect expire etc. a variety of accidents
When, extract system will not interrupt, and ensure tail gas extract system continuous production and safe operation.
Detailed description of the invention
Fig. 1 is the device connection signal block diagram of yellow phosphorus electric furnace tail gas extract system in the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of exhaust gas cleaner in the embodiment of the present invention；
Specific embodiment
Invention is further described in detail with reference to the accompanying drawings and embodiments.
Shown in Figure 1, the embodiment of the present invention provides a kind of yellow phosphorus electric furnace tail gas extract system, with yellow phosphorus electric furnace air guide
Pipe outlet is connected, including pressure transmitter, exhaust gas cleaner, surge tank, frequency conversion fan and gas chamber, the yellow phosphorus electric furnace
Gas-guide tube outlet, exhaust gas cleaner, surge tank, frequency conversion fan are sequentially connected to using exhaust pipe with gas chamber；
The surge tank is for collecting redundancy gas and the gas that replenishes the supply in pipeline air pressure deficiency, the surge tank
On the exhaust pipe between the frequency conversion fan and the exhaust gas cleaner；
The pressure transmitter is set to the outlet connection of the gas-guide tube of the exhaust pipe and the yellow phosphorus electric furnace, is used for
Measure the air pressure of the gas-guide tube outlet connection of the exhaust pipe and the yellow phosphorus electric furnace；
The frequency conversion fan is connect with the pressure transmitter signal, and the revolving speed of the frequency conversion fan becomes according to the pressure
The pressure value for sending device to measure adjusts in real time.
May also include the furnace pressure sensor at the gas-guide tube set on the yellow phosphorus electric furnace, the regulating valve on communicating pipe with it is described
The connection of furnace pressure sensor signal.Furnace pressure sensor is set on the exhaust pipe of exhaust gas cleaner entrance, for real-time
The air pressure of the exhaust pipe Yu exhaust gas cleaner import junction is monitored, and regulating valve is issued in real time by operation
Signal is controlled, signal connects between furnace pressure sensor and regulating valve on communicating pipe.Pipeline of the furnace pressure sensor to monitoring feedback
There are exhaust pipe air pressure changes caused by the corresponding time difference to carry out in fact between pressure value and the suction pressure numerical value being adjusted to
When operation, provide control signal, regulating valve carries out the adjustment of dynamic opening and closing in real time based on the control signal of furnace pressure sensor, and leads to
It crosses and communicating pipe the redundancy gas come out from frequency conversion fan is imported into surge tank, reflux is formed, for making up because of pipeline air pressure
Tail gas residual quantity when insufficient, to ensure that the lasting gas in extract system pipeline is supplied；Due to eliminating the yellow phosphorus electric furnace speed of exhaust
During adjustment between fed back values and the suction pressure numerical value that need to be adjusted to the corresponding time difference influence, realize tail gas pumping
The continuity of system, it is ensured that stablizing for extract system is transported when air pressure is unstable caused by fluctuating because of the working of a furnace, tail gas amount die-offs
Row.
Surge tank is connected by exhaust pipe with the air inlet of frequency conversion fan, and gas chamber passes through exhaust pipe and frequency conversion fan
Outlet be connected, frequency conversion fan import both ends are connected with the first communicating pipe and the second communicating pipe, the two communicating pipes and offgas duct
Road constitutes circulation line channel, and the regulating valve for controlling gas in pipelines flow is equipped on all communicating pipes.Adjust valve base
In furnace pressure sensor control signal carry out in real time dynamic opening and closing adjustment, and by communicating pipe will from frequency conversion fan come out it is superfluous
Residual air body is imported into surge tank, forms reflux, tail gas residual quantity when for making up because of pipeline air pressure deficiency, to ensure extract system
Lasting gas supply in pipeline.
Further, communicating pipe one end can be connected with surge tank, the exhaust pipe phase that the other end is exported with frequency conversion fan
Even.By being directly connected to for communicating pipe and surge tank, surge tank is become to a part in aforementioned circulation line channel, surge tank is used
In collecting redundancy gas and the gas that replenishes the supply in pipeline air pressure deficiency, surge tank is set to frequency conversion fan and tail gas clean-up fills
On exhaust pipe between setting；It ensures when electric furnace power-off, fan parking, gas chamber collect full etc. a variety of unexpected, passes through buffering
Tank provides the without interruption of gas, ensures that tail gas extract system stablizes safe operation and the stable and continuous of yellow phosphorus electric furnace produces.
It may also include to be set to and be additionally provided with a controller on the yellow phosphorus electric furnace, the controller is for monitoring the yellow phosphorus
Electric furnace operating current signal, and control the frequency conversion fan in the yellow phosphorus electric furnace operating current signal interruption and shut down.
These setting make regulating valve open and close, frequency conversion fan working condition adjustment etc. emergency measures response more and
When it is accurate, it is ensured that timely responding to for bursty state occurs.
Exhaust gas cleaner includes the Safety water seal being sequentially connected, air-washer, water separator and choke water seal, institute
Stating air-washer includes the water washing device and alkaline cleaner being sequentially connected, and the air-washer is set to the Safety water seal and described
On pipeline between steam-water separator, the choke water seal be set to the water separator and the surge tank it
Between.
An also settable exhausting pipeline at exhaust gas cleaner, and make exhausting pipeline and exhaust gas cleaner gas outlet phase
Even.Exhausting pipeline can be opened when aforementioned unexpected state occurs, and excessive gas is handled by the exhausting pipeline emptying, it is ensured that
System safety operation.
The working principle of yellow phosphorus electric furnace tail gas extract system of the present invention is as follows:
In the discharge of yellow phosphorus electric furnace tail gas normal table, yellow phosphorus electric furnace tail gas extract system of the present invention uses pressure transmitter
The air pressure of exhaust pipe and yellow phosphorus electric furnace gas-guide tube outlet connection is measured, and air pressure signal is transmitted to frequency conversion fan；Frequency conversion
Air pressure signal adjusts operating power to blower in real time based on the received, keeps the air pressure of the yellow phosphorus electric furnace gas-guide tube outlet connection
For micro-positive pressure；Frequency conversion fan stores the yellow phosphoric tail gas of extraction by after exhaust gas cleaner, being passed to gas chamber, and according to user
Demand is transmitted separately to each tail gas user.
Unstable in yellow phosphorus electric furnace tail gas gas output, when changing in controlled range, pressure transmitter passes air pressure signal
Frequency conversion fan is transported to, air pressure signal adjusts operating power to frequency conversion fan in real time based on the received, frequency conversion fan when keeping extracting gas
Power be adapted with electric furnace gas output, simultaneous buffering tank is by the control signal of furnace pressure sensor, to fed back values and adjustment
To suction pressure numerical value between there are exhaust pipe air pressure changes caused by the corresponding time difference to be balanced adjustment, in pipeline gas
When pressing through low, by opening regulating valve, the redundancy gas come out from frequency conversion fan is imported into surge tank using communicating pipe, is delayed
Tank is rushed for collecting redundancy gas, the redundancy gas entered the buffer tank is input to frequency conversion fan as the make-up gas of reflux again
In, replenish the supply gas when for making up pipeline air pressure deficiency, to ensure that the lasting gas in extract system pipeline is supplied, completes
Dynamic equilibrium adjustment is carried out to exhaust pipe air pressure change, realizes the continuous-stable conveying of tail gas.
The embodiment of the present invention also provides a kind of yellow phosphoric tail gas of the use based on yellow phosphorus electric furnace tail gas extract system as described above
Air-exhaust method, comprising the following steps:
S1, exhaust pipe described in the pressure transmitter measurement and the yellow phosphorus electric furnace gas-guide tube outlet connection are used
Air pressure, and air pressure signal is transmitted to the frequency conversion fan；
Air pressure signal adjusts operating power in real time based on the received for S2, the frequency conversion fan, and the yellow phosphorus electric furnace is kept to lead
The air pressure of tracheae outlet connection is micro-positive pressure；
S3, the frequency conversion fan store the yellow phosphoric tail gas of extraction by after exhaust gas cleaner, being passed to the gas chamber,
And each tail gas user is transmitted separately to according to user demand.
Further, furnace pressure sensor, the communicating pipe for constituting circulation line channel and furnace pressure sensor are being provided with, is being adjusted
It saves in the yellow phosphorus electric furnace tail gas extract systems of components such as valve, control signal of the regulating valve based on the furnace pressure sensor, realizes dynamic
State is opened, and will be imported in surge tank from the gas that frequency conversion fan comes out by communicating pipe, forms redundancy gas, surge tank passes through
The gas progress frequency conversion fan that replenishes the supply is re-used as to the recycling of redundancy gas, completion is balanced exhaust pipe air pressure change
Adjustment.
Regulating valve control pipeline in flow specific steps are as follows: furnace pressure sensor measurement furnace pressure signal p, and in real time calculate with
Preset value p0Between furnace pressure signal variation delta p (Δ p=p-p0)；Regulating valve on the communicating pipe receives the furnace pressure
Sensor furnace pressure signal p, as Δ p < 0, the regulating valve on the communicating pipe at frequency conversion fan inlet and outlet both ends is opened；As Δ p
≥Δp0When, regulating valve is closed.
The present invention is not limited to the above-described embodiments, for those skilled in the art, is not departing from
Under the premise of the principle of the invention, several improvements and modifications can also be made, these improvements and modifications are also considered as protection of the invention
Within the scope of.The content being not described in detail in this specification belongs to the prior art well known to professional and technical personnel in the field.
Claims (9)
1. a kind of yellow phosphorus electric furnace tail gas extract system is connected, it is characterised in that: including pressure with the outlet of yellow phosphorus electric furnace gas-guide tube
Transmitter, exhaust gas cleaner, surge tank, frequency conversion fan and gas chamber, the gas-guide tube outlet of the yellow phosphorus electric furnace, tail gas clean-up
Device, surge tank, frequency conversion fan and gas chamber are sequentially connected to using exhaust pipe；
The surge tank is used to collect redundancy gas and the gas that replenishes the supply in pipeline air pressure deficiency, the surge tank are set to
On the exhaust pipe between the frequency conversion fan and the exhaust gas cleaner；
The pressure transmitter is set to the outlet connection of the gas-guide tube of the exhaust pipe and the yellow phosphorus electric furnace, for measuring
The air pressure of the gas-guide tube outlet connection of the exhaust pipe and the yellow phosphorus electric furnace；
The frequency conversion fan is connect with the pressure transmitter signal, and the revolving speed of the frequency conversion fan is according to the pressure transmitter
The pressure value of measurement adjusts in real time.
2. yellow phosphorus electric furnace tail gas extract system as described in claim 1, it is characterised in that: the surge tank passes through exhaust pipe
It is connected with the air inlet of frequency conversion fan, the gas chamber is connected by exhaust pipe with the outlet of frequency conversion fan, frequency conversion fan
Import both ends were connected at least two communicating pipes, and it is logical that at least two communicating pipe and the tail gas pipeline constitute circulation line
Road is equipped with the regulating valve for controlling gas in pipelines flow at least two communicating pipe.
3. yellow phosphorus electric furnace tail gas extract system as claimed in claim 2, it is characterised in that: delay with described described communicating pipe one end
It rushes tank to be connected, the other end is connected with the exhaust pipe that the frequency conversion fan exports.
4. yellow phosphorus electric furnace tail gas extract system as described in claim 1, it is characterised in that: the exhaust gas cleaner includes suitable
Secondary connected Safety water seal, air-washer, water separator and isolation water seal, the Safety water seal are set to the tail gas
Between pipeline and the air-washer, the air-washer includes the water washing device and alkaline cleaner being sequentially connected, described to wash
Device of air is set on the pipeline between the Safety water seal and the steam-water separator, and the isolation water seal is set to the vapour
Between water separation device and the surge tank.
5. yellow phosphorus electric furnace tail gas extract system as described in claim 1, it is characterised in that: be additionally provided with one on the yellow phosphorus electric furnace
Controller, the controller are used to monitor the yellow phosphorus electric furnace operating current signal, and in the yellow phosphorus electric furnace operating current
The frequency conversion fan is controlled when signal interruption to shut down.
6. yellow phosphorus electric furnace tail gas extract system as described in claim 1, it is characterised in that: also set at the exhaust gas cleaner
There is an exhausting pipeline, the exhausting pipeline is connected with the exhaust gas cleaner gas outlet.
7. a kind of yellow phosphoric tail gas air-exhaust method based on yellow phosphorus electric furnace tail gas extract system as described in claim 1, feature
It is, comprising the following steps:
S1, the gas of exhaust pipe described in the pressure transmitter measurement and the yellow phosphorus electric furnace gas-guide tube outlet connection is used
Pressure, and air pressure signal is transmitted to the frequency conversion fan；
Air pressure signal adjusts operating power in real time based on the received for S2, the frequency conversion fan, keeps the yellow phosphorus electric furnace gas-guide tube
The air pressure of outlet connection is to extract under micro-positive pressure to tail gas；
S3, the frequency conversion fan are by the yellow phosphoric tail gas of extraction by after exhaust gas cleaner, being passed to the gas chamber storage, and root
Each tail gas user is transmitted separately to according to user demand.
8. yellow phosphoric tail gas air-exhaust method as claimed in claim 7, it is characterised in that: be arranged at frequency conversion fan import both ends
At least two communicating pipes, at least two communicating pipe and the tail gas pipeline constitute circulation line channel, described at least two
The regulating valve for controlling gas in pipelines flow is respectively provided on a communicating pipe；In the exhaust pipe and exhaust gas cleaner
Import junction is provided with furnace pressure sensor, connect for exhaust pipe described in real-time monitoring with the exhaust gas cleaner import
The air pressure at place, and real-time control signal is issued to regulating valve by operation, on the furnace pressure sensor and the communicating pipe
Signal connects between regulating valve；The regulating valve carries out dynamic opening and closing based on the control signal of the furnace pressure sensor, by redundancy
Gas by importeding into the communicating pipe in the surge tank, the surge tank, and will for collecting redundancy gas
Redundancy gas after collection is input in frequency conversion fan again as the make-up gas of reflux, is carried out to exhaust pipe air pressure change flat
Weighing apparatus adjustment.
9. yellow phosphoric tail gas air-exhaust method as claimed in claim 8, it is characterised in that: flow in the regulating valve control pipeline
Specific steps are as follows: furnace pressure sensor measurement furnace pressure signal p, and calculate and preset value p in real time0Between furnace pressure signal variable quantity
Δ p (Δ p=p-p0)；Regulating valve on the communicating pipe receives the control signal p of the furnace pressure sensor, as Δ p < 0, institute
The regulating valve stated on the communicating pipe at frequency conversion fan inlet and outlet both ends is opened；As Δ p >=Δ p0When, regulating valve is closed.
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| CN109708483A (en) * | 2018-12-29 | 2019-05-03 | 中信锦州金属股份有限公司 | A kind of frequency conversion automatically controls the device and method of manganese silicon electric furnace gas pressure |
| CN109731880A (en) * | 2019-01-18 | 2019-05-10 | 力同环保机械（上海）有限公司 | Automatic control device and method for aluminium paint line air draft to RTO |
| CN111023853A (en) * | 2019-12-26 | 2020-04-17 | 四川蓝海化工（集团）有限公司 | Conveying device for yellow phosphorus tail gas purification system |
| CN110986609A (en) * | 2019-12-26 | 2020-04-10 | 四川蓝海化工（集团）有限公司 | Tail gas pressurization system for lime kiln |
| CN112524962B (en) * | 2020-08-20 | 2022-08-02 | 云南江磷集团股份有限公司 | Yellow phosphorus electric furnace tail gas recovery and purification process |
| CN113457433A (en) * | 2021-05-31 | 2021-10-01 | 石横特钢集团有限公司 | Flue gas desulfurization and denitrification treatment device for tubular furnace |
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Effective date of registration: 20231219 Address after: Room 3026-2, Nanhu Entrepreneurship Park, No. 53 Nanhu Avenue, Hongshan District, Wuhan City, Hubei Province, 430070 Patentee after: WUHAN JIENENGCC TECHNOLOGY Co.,Ltd. Address before: 3026, Nanhu Entrepreneurship Center, Hongshan Entrepreneurship Park, No. 53 Nanlu Avenue, Hongshan District, Wuhan City, Hubei Province, 430072 Patentee before: WUHAN DONGSHENG JIENENG TECHNOLOGY Co.,Ltd. |