CN109796142A - A kind of ardealite calciner - Google Patents
A kind of ardealite calciner Download PDFInfo
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- CN109796142A CN109796142A CN201910248835.1A CN201910248835A CN109796142A CN 109796142 A CN109796142 A CN 109796142A CN 201910248835 A CN201910248835 A CN 201910248835A CN 109796142 A CN109796142 A CN 109796142A
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Abstract
A kind of ardealite calciner belongs to ardealite calcining field, including calcining kiln, preheating kiln, deduster, deduster blast pipe, electric-heating wind-box, reversal valve, calcining kiln discharge pipe, calcining kiln feed inlet, preheating kiln discharge port；The lower section of preheating kiln is arranged in the calcining kiln, and for rotary kiln, the discharge port of feed inlet and preheating kiln is connected, and air outlet is connect with calcining kiln discharge pipe；The top of calcining kiln is arranged in the preheating kiln, is rotary kiln, and feed inlet is connect with quantitative material feeder, the feed inlet connection of discharge port and calcining kiln；The deduster is sack cleaner, is mounted on the upper side of calcining kiln and preheating kiln, air inlet is connect with deduster blast pipe, and air outlet is connect with air-exhausting duct；Having the characteristics that, which can prevent from being discharged gas due to calcining kiln, contains large quantity of moisture to bag filter generation bonding to which bag filter fail.
Description
Technical field
The invention belongs to ardealites to calcine field, in particular to the phosphorus stone that when a kind of resource utilization for ardealite uses
Cream calciner and its application method.
Background technique
Ardealite is the byproduct of phosphorous chemical industry enterprise production, due to moisture content height, containing harmful substance and acid ion, with
And main ingredient causes bulk deposition it is thus impossible to enough be applied directly in construction for dihydrate gypsum, so that causing
Environmental pollution；For this purpose, the present inventor, which has formerly invented ardealite, removes harmful substance and acid ion by calcining, it is allowed to convert
For that can be complex phase semi-hydrated gypsum mixture that construction uses, solves ardealite bulk deposition and cause asking for environmental pollution
Topic, while intensity height, the gypsum building material of water-tolerant are provided to construction again；In ardealite calcination process, phosphorus
Gypsum passes through diminishing, and preheating after calcining, forms the mixture of anhydrous gypsum and semi-hydrated gypsum；It finds in use,
Due to the continuous improvement of environmental protection standard, the gas of calcining kiln discharge needs to be dusted by deduster, and common whirlwind removes
Dirt device, electrostatic precipitator etc. are not able to satisfy emission request, and be best able to meet emission request is sack cleaner；Using bag
It is found during formula deduster, sack cleaner has the following deficiencies: head when being applied to the tails dedusting of ardealite calcining kiln
First, contain a large amount of moisture and ardealite dust in the tail gas of ardealite calcining kiln discharge, these dust enter bag-type dusting
After device, dust is filtered by bag filter, because in normal work, the tail of temperature and calcining kiln discharge inside deduster
The temperature of gas is close, and the moisture contained in the tail gas of calcining kiln discharge is in gaseous state, can remove with the discharge of other gases
Dirt device, still, when calcining kiln has just started starting, the temperature of inside of bag type dust collector is lower at this time, the gas with calcining kiln discharge
Body temperature difference is larger, and after the gas of calcining kiln discharge at this time enters sack cleaner, steam therein encounters the bag type filtering of low temperature
Device can quickly become droplet, in conjunction with the dust on bag filter, viscosity greatly ardealite bonding agent be formed, by pocket type mistake
Filter bonding causes bag filter to fail；Furthermore when calcining kiln stops working, gradually into the gas temperature in deduster
It reduces, when the temperature in deduster is reduced to condensation vapor point temperature, equally has above-mentioned phenomenon and occur, seriously affected and removed
The normal work of dirt device causes frequently to replace bag filter, increases downtime, increase operating cost, increase into
Originally yield is reduced.
Summary of the invention
For the above problem present in existing ardealite calciner, the present invention proposes that a kind of ardealite calcining is set
It is standby, it is characterised in that: including calcining kiln, preheating kiln, deduster, deduster blast pipe, electric-heating wind-box, reversal valve, calcining kiln
Discharge pipe, calcining kiln feed inlet, preheating kiln discharge port；The lower section of preheating kiln is arranged in the calcining kiln, is rotary kiln, into
The connection of the discharge port of material mouth and preheating kiln, air outlet are connect with calcining kiln discharge pipe；The preheating kiln is arranged in calcining kiln
Top, be rotary kiln, feed inlet connect with quantitative material feeder, and the feed inlet of discharge port and calcining kiln connects；It is described
Deduster be sack cleaner, be mounted on the upper side of calcining kiln and preheating kiln, air inlet is connect with deduster blast pipe,
Its air outlet is connect with air-exhausting duct；The deduster blast pipe is mounted between deduster air inlet and reversal valve, both ends point
It is not connect with the air outlet of the air inlet of deduster and reversal valve；The electric-heating wind-box is mounted on the side of reversal valve, leads to
The connection of one air inlet of piping and reversal valve；Electrical heating elements and air supply device are installed in the electric-heating wind-box,
And there is automatic control device, the automatic control device includes the temperature sensor for being mounted on deduster inner wall, and installation
In the controller of reversal valve, and electrical heating elements and air supply device starting are controlled according to the set temperature of temperature sensor and closed
The control relay closed；The reversal valve is mounted between deduster blast pipe and electric-heating wind-box and calcining kiln discharge pipe,
Its outlet is connect with deduster blast pipe, and there are two import, one of import passes through the air outlet of pipeline and electric-heating wind-box
Connection, another import are connect with calcining kiln discharge pipe；There is reversing arrangement inside the reversal valve, can turn on or off
One in two imports, only allow an import and outlet；The reversal valve is solenoid controlled directional control valve, is added with electricity
The control devices of hot bellows connects, can control and drive the reversing arrangement of reversal valve change two imports of two reversal valves with
The mode of communicating of the outlet of reversal valve；The calcining kiln discharge pipe is mounted between reversal valve and calcining kiln, both ends respectively with
One of import of reversal valve is connected with the air outlet of calcining kiln；Air-introduced machine is installed on the calcining kiln discharge pipe；Institute
One end of calcining kiln is arranged in the calcining kiln feed inlet stated, and positioned at the upper side of calcining kiln, connect with the discharge port of preheating kiln；Institute
The preheating kiln discharge port stated is mounted on one end of preheating kiln, positioned at the side-lower of preheating kiln, connect with the feed inlet of calcining kiln.
Beneficial effect
The beneficial effects of the present invention are can guarantee that deduster, in certain temperature environment, is avoided because of temperature before work
The too low gas caused in calcining kiln enters vapor therein after deduster and condenses to the cold, and bag filter is caused to be bonded and lose
Effect reduces the maintenance replacement number and frequency of deduster, reduces downtime, improve work efficiency, realize simultaneously
The automatic control of temperature, easy to operate, safety is good, high reliablity, and structure is simple.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention
1. calcining kiln, 2. preheating kilns, 3. dedusters, 4. deduster blast pipes, 5. electric-heating wind-boxes, 6. reversal valves, 7. calcining kilns
Discharge pipe, 8. calcining kiln feed inlets, 9. preheating kiln discharge ports.
Specific embodiment
Technical solution in order to further illustrate the present invention, now in conjunction with Detailed description of the invention a specific embodiment of the invention, such as
Fig. 1, the preheating kiln for the applicant's earlier application for selecting the industry general in this example or cries preheating device as preheating kiln 2,
Twin-tub rotary calcining furnace is as calcining kiln 1；It selects the general fiber bag precipitator of the industry as deduster 3, is selected in this example
Arrangement form is the arrangement such as attached drawing 1, and calcining kiln 1 is located below, and preheating kiln 2 and deduster 3 are located at calcining kiln 1
Column two sides are simultaneously divided in top, and such advantage is that transfer efficiency is high, and temperature is kept, and the ardealite come out from preheating kiln 2 can
It is directly entered calcining kiln 1, without the conveying by intermediate conveying device, reduces intermediate link and saves equipment, simultaneously
Reduce since the ardealite temperature come out from preheating kiln 2 is higher, moisture content is lower, is easy cooling and can inhale during transportation
Receive the moisture in air；It is compact-sized simultaneously, save plant area；The steel air supply tube conduct for selecting the industry general in this example
The connecting tube of deduster blast pipe 4 and calcining kiln discharge pipe 7 and electric-heating wind-box 5；Select the electric heating air-supply that the industry is general
Device installs the general commercially available temperature sensor of the industry as the electric-heating wind-box 5 in this example inside deduster, and
It is connect with the control device of electric-heating wind-box 5；The two-position three way electric change valve for selecting the industry general in this example is as commutation
Valve 6 can not use common air-operated solenoid valve, therefore select commutation because the caliber of air supply tube is larger (300 millimeters or more)
Valve 6 is butterfly valve, commutation efficiency can be improved, and can be realized the commutation of big orifice pipeline；And the installation driving electricity on reversal valve 6
Machine is connect with valve rod, and driving motor is connect with the control device of electric-heating wind-box 5；By the discharge port of preheating kiln 2 and calcining
The feed inlet of kiln 1 connects, the general air-introduced machine of the industry will be installed in the middle part of calcining kiln discharge pipe 7, and goes out respectively with calcining kiln 1
Air port is connected with one of air inlet of reversal valve 6, electric-heating wind-box 5 by connecting tube and reversal valve 6 another into
Air port connection, by deduster blast pipe 4 be mounted on reversal valve 6 air outlet and deduster 3 air inlet and respectively with reversal valve 6
It is connected with deduster 3, just completes implementation of the invention.
In application, its application method is, step 1 opens electric-heating wind-box 5；2, the control device instruction of electric-heating wind-box
And the commutation of reversal valve 6 is controlled, it is connected to air outlet and the 3 air inlet channel of deduster of electric-heating wind-box 5, calcining kiln is simultaneously closed off and goes out
Air hose 7 and 3 air inlet channel of deduster；3, electric-heating wind-box 5 is sent by reversal valve 6 and deduster blast pipe 4 into deduster 3
Hot wind；4, when 3 internal temperature of deduster reaches set temperature (generally more than Water vapor condensation temperature), it is arranged in deduster
Temperature sensor signal inside 3 is transferred to the control device of electric-heating wind-box 5, which issues instruction, and driving is changed
It commutates to valve 6, that is, closes the air-supply passage between electric-heating wind-box 5 and deduster 3, while opening calcining kiln discharge pipe 7
With the channel between deduster 3, the flame furnace enabling signal for being simultaneously emitted by calcining kiln 1 closes the electric heating dress of electric-heating wind-box 5
It sets and air supply device；When can guarantee that the wind being discharged in party's calcining kiln 1 enters deduster 3 in this way, vapor contained therein is not
Droplet can be condensed into deduster 3, and is bonded bag filter；5, starting calcining kiln 1 works normally, then starting installation
Air-introduced machine on calcining kiln discharge pipe 7, the outlet air in calcining kiln 1 are admitted to deduster 3, filter heel row by bag filter
It puts；6, when calcining kiln 1 stops working, when the temperature sensor in deduster 3 detects the temperature in deduster 3 lower than setting
When determining temperature, start the electric heater unit and air supply device of electric-heating wind-box 5, while the driving device on reversal valve 6 issues
Instruction, driving reversal valve 6 commutate, that is, air outlet and the 3 air inlet channel of deduster of connection electric-heating wind-box 5, close simultaneously
Calcining kiln discharge pipe 7 and 3 air inlet channel of deduster are closed, hot wind is sent into deduster 3 from electric-heating wind-box 5, keeps deduster 3
Interior temperature avoids being deposited in deduster 3 and contains vapor and phosphorus by what calcining kiln 1 was sent into more than setting minimum temperature
The wind of Gypsum dust generates Water vapor condensation since temperature reduces, and then the phenomenon that bonding bag filter of generation generates, and leads to
Calculating is crossed, after the entrapped gas discharge in deduster 3 finishes, closes the electric heater unit and air supply device of electric-heating wind-box 5,
Whole equipment shuts down；7, it when being switched on again, repeats the above steps；This makes it possible to avoid in dust bonding deduster 3
The phenomenon that bag filter, occurs, and reduces the frequency and quantity of replacement bag filter, because the quantity of bag filter is huge
Greatly, replacement is primary costly and needs to shut down for a long time, so can save a large amount of expense using this method, reduces and shuts down
Time improves production efficiency.
Claims (3)
1. a kind of ardealite calciner, it is characterised in that: including calcining kiln, preheating kiln, deduster, deduster blast pipe, electricity
Heating air box, reversal valve, calcining kiln discharge pipe, calcining kiln feed inlet, preheating kiln discharge port；The calcining kiln setting is preheating
The lower section of kiln, for rotary kiln, the discharge port of feed inlet and preheating kiln is connected, and air outlet is connect with calcining kiln discharge pipe；Institute
The top of calcining kiln is arranged in the preheating kiln stated, and is rotary kiln, and feed inlet connect with quantitative material feeder, discharge port with forge
The feed inlet of firing connects；The deduster is sack cleaner, is mounted on the upper side of calcining kiln and preheating kiln, is entered the wind
Mouth is connect with deduster blast pipe, and air outlet is connect with air-exhausting duct；The deduster blast pipe is mounted on deduster air inlet
Between mouth and reversal valve, both ends are connect with the air outlet of the air inlet of deduster and reversal valve respectively；The electric-heating wind-box
It is mounted on the side of reversal valve, is connected by an air inlet of pipeline and reversal valve；The reversal valve is mounted on deduster
Between blast pipe and electric-heating wind-box and calcining kiln discharge pipe, outlet is connect with deduster blast pipe, and there are two imports, wherein
One import is connected by the air outlet of pipeline and electric-heating wind-box, another import is connect with calcining kiln discharge pipe；Described
There is reversing arrangement inside reversal valve, one in two imports can be turned on or off, an import and outlet is only allowed to connect
It is logical；The reversal valve is solenoid controlled directional control valve, connect with the control device of electric-heating wind-box, can control and drive commutation
The reversing arrangement of valve changes the mode of communicating of two imports and the outlet of reversal valve of two reversal valves；The calcining kiln outlet air
Pipe is mounted between reversal valve and calcining kiln, and both ends connect with the air outlet of one of import of reversal valve and calcining kiln respectively
It connects；Air-introduced machine is installed on the calcining kiln discharge pipe；One end of calcining kiln is arranged in the calcining kiln feed inlet, is located at
The upper side of calcining kiln is connect with the discharge port of preheating kiln；The preheating kiln discharge port is mounted on one end of preheating kiln, is located at
The side-lower of preheating kiln is connect with the feed inlet of calcining kiln.
Electrical heating elements and air supply device are installed in electric-heating wind-box described in 2..
Automatic control device is installed, the automatic control device includes being mounted on deduster in the electric-heating wind-box described in 3.
The temperature sensor of inner wall, and it is mounted on the controller of reversal valve, and add according to the set temperature of temperature sensor control electricity
The control relay of thermal element and air supply device starting and closing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910248835.1A CN109796142B (en) | 2019-03-29 | 2019-03-29 | Phosphogypsum calcining equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910248835.1A CN109796142B (en) | 2019-03-29 | 2019-03-29 | Phosphogypsum calcining equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109796142A true CN109796142A (en) | 2019-05-24 |
| CN109796142B CN109796142B (en) | 2021-06-29 |
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ID=66564411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910248835.1A Active CN109796142B (en) | 2019-03-29 | 2019-03-29 | Phosphogypsum calcining equipment |
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| Country | Link |
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| CN (1) | CN109796142B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5066474A (en) * | 1988-05-10 | 1991-11-19 | Science Ventures, Inc. | Method for sulfur dioxide production from calcium sulfate by entrained high-temperature slagging reduction |
| CN202626043U (en) * | 2012-06-29 | 2012-12-26 | 漳州正霸建材科技有限公司 | Calcination production line of industrial by-product gypsum |
| CN205607117U (en) * | 2016-05-18 | 2016-09-28 | 山东省临沂科威机械有限公司 | Hot -blast tail gas dust remover of drying system |
| CN106431033A (en) * | 2016-09-27 | 2017-02-22 | 贵州省息烽县红海建材有限公司 | Production process of phosphogypsum powder |
| CN107337362A (en) * | 2017-08-18 | 2017-11-10 | 江苏夫科技股份有限公司 | A kind of industry by-product gypsum calcinatory |
| CN107902932A (en) * | 2017-11-21 | 2018-04-13 | 郑州三迪建筑科技有限公司 | A kind of ardealite calciner plant |
-
2019
- 2019-03-29 CN CN201910248835.1A patent/CN109796142B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5066474A (en) * | 1988-05-10 | 1991-11-19 | Science Ventures, Inc. | Method for sulfur dioxide production from calcium sulfate by entrained high-temperature slagging reduction |
| CN202626043U (en) * | 2012-06-29 | 2012-12-26 | 漳州正霸建材科技有限公司 | Calcination production line of industrial by-product gypsum |
| CN205607117U (en) * | 2016-05-18 | 2016-09-28 | 山东省临沂科威机械有限公司 | Hot -blast tail gas dust remover of drying system |
| CN106431033A (en) * | 2016-09-27 | 2017-02-22 | 贵州省息烽县红海建材有限公司 | Production process of phosphogypsum powder |
| CN107337362A (en) * | 2017-08-18 | 2017-11-10 | 江苏夫科技股份有限公司 | A kind of industry by-product gypsum calcinatory |
| CN107902932A (en) * | 2017-11-21 | 2018-04-13 | 郑州三迪建筑科技有限公司 | A kind of ardealite calciner plant |
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| CN109796142B (en) | 2021-06-29 |
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