CN201366421Y - Mechanical cleaning mechanism for internal ring formation of kiln-method phosphoric acid rotary kiln - Google Patents
Mechanical cleaning mechanism for internal ring formation of kiln-method phosphoric acid rotary kiln Download PDFInfo
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- CN201366421Y CN201366421Y CNU2009200357738U CN200920035773U CN201366421Y CN 201366421 Y CN201366421 Y CN 201366421Y CN U2009200357738 U CNU2009200357738 U CN U2009200357738U CN 200920035773 U CN200920035773 U CN 200920035773U CN 201366421 Y CN201366421 Y CN 201366421Y
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- kiln
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- phosphoric acid
- ring formation
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Abstract
A mechanical cleaning mechanism for internal ring formation of a kiln-method phosphoric acid rotary kiln comprises a plurality of cleaning hammers (1) that are arranged in the circumferential direction and axial direction of the kiln body and rotate along with the kiln body, and is characterized in that one end of the hammerhead (2) of the cleaning hammer (1) passes through the kiln body and extends into the kiln chamber; the other end of the hammerhead (2) extends out of the kiln body and corresponds to a waveform guider (3); the hammerhead (2) of the cleaning hammer (1) is provided with a recovery spring which leads one end, arranged in the kiln chamber, of the hammerhead (2), to always push through the internal wall of the kiln chamber; the waveform guider (3) is supported on a synchronous lifting column (4); the synchronous lifting column (4) is arranged on a fixed frame (5); and the fixed frame (5) is arranged at two sides of the kiln body. The mechanical cleaning mechanism solves the ring formation problem of the kiln-method phosphoric acid core equipment in the kiln, the cleaning interval can be prolonged from about 20 days to about 50 days, the requirement that the annual operation time for chemical production is more than 6750 hours is complied with, and the phosphor recovery is improved from 65% to 85%.
Description
Technical field
The utility model relates to a kind of chemical industry equipment, the cleaning plant of the inner residue of chemical reaction kiln especially, the inner ring formation mechanical chipping of specifically a kind of kiln-process phosphoric acid rotary kiln mechanism.
Background technology
As everyone knows, phosphoric acid is one of valuable cargo of national economy, is mainly used in to produce high-concentration phosphate compound fertilizers material, feed grade calcium phosphate and various industrial phosphate, is widely used in industrial departments such as food, metallurgy, electronics, pharmacy, papermaking in addition.Wherein, fertilizer industry accounts for aggregate consumption more than 80%.
Whole world phosphoric acid output (is pressed 100%P at present
2O
5Meter, down together) up to 4,320 ten thousand tons, wherein China's output is about 1,300 ten thousand tons.This shows that phosphoric acid product has great demand.
The production of phosphoric acid has " wet method " and " hot method " two kinds of technologies both at home and abroad at present.But in today that resource dilution, energy shortage are on the rise, above-mentioned two kinds of production technologies all are absorbed in insoluble predicament:
(1) though China's phosphate rock resource is abundanter, the phosphorus ore more than 90% is grade (P
2O
5) low and impurity (MgO, Fe
2O
3, Al
2O
3) phosphorus ore that content is high, meet the rich ore less than 10% of " wet method " technological requirement, and the exploitation of picking up year through number, rich ore is exhausted fully soon.In addition, based on the materialization characteristics of the most of phosphorus ores of China, its selected enrichment is technical difficulty not only, and the cost costliness.
(2) to need sulfuric acid be raw material to " wet method " phosphoric acid production, and China's sulphur resource quite lacks, and most of enterprises rely on imported sulphur.
(3) " hot method " though technology is lower to the requirement of phosphorus ore, P per ton
2O
5The production power consumption of product is up to more than the 6500kWh, thereby price is very expensive.
Compare with existing " wet method " and " hot method " technology, " kiln-process phosphoric acid " new technology has tangible advantage:
(1) new technology has been owing to made full use of the chemical reaction heat in the production process, thereby reduced product energy consumption significantly.With P per ton
2O
5Meter, its energy consumption only is 60% of " hot method " technology.
(2) new technology can directly use in the high impurity content in, low-grade siliceous phosphorus ore.SiO in phosphorus ore
2When content is higher, the P in the phosphorus ore
2O
5Content is low to moderate 12～17%, and enterprise is still lucrative.
(3) new technology is also making moderate progress aspect " three wastes " discharging, adopts the kiln-process phosphoric acid new technology to promoting China's economic development, and building a harmonious society has great significance.
1987, people such as professor Jiang Shanxiang of Nanjing designing institute of group of the China Petrochemical Industry work that conducts a research, and propose to cover the conception that integument comes isolation oxidation-reducing zone at reaction-ure surface, to solve the technical barrier of kiln-process phosphoric acid most critical.1988, people such as professor Hou Yonghe of Changsha Mining ﹠ Metallurgy Inst also carried out the experimental study work of kiln-process phosphoric acid.Changsha mining and metallurgy institute cooperated with Jiangxi phosphate fertilizer plant in 1996, had built the complete kiln-process phosphoric acid pilot-plant test device of a cover 200t/a 85%H3PO4, had carried out 406 hours the test that feeds intake, and had finished running examination continuously in 72 hours.
2005, above-mentioned development was cooperated by Hubei Yao Zhihe chemical industry joint-stock company and Changsha mining and metallurgy institute, was the exemplary industrial installation of 10kt/a 85%H3PO4 phosphoric acid in the hubei baokang scale of having built.Operation through nearly two years has all obtained good achievement.
For a long time, the high-temperature fusion ring formation is the neck bottle that hinders the rotary kiln long-term operation and obtain better percent reduction.And the method that sanitation and hygiene high-temperature fusion ring formation is commonly used at present is the cleaning of stopping, this will inevitably cause a large amount of energy wastes and the cleaning of stopping for a long time, influence is produced normally carries out raising with economic benefit, therefore how to prolong the gap periods of the cleaning of stopping, the cleaning of stopping as few as possible, reduce labor workload and labour intensity in the scale removal process simultaneously, shortening down time is the difficult problem that must solve as early as possible in the kiln-process phosphoric acid production.
Summary of the invention
The purpose of this utility model is at easily producing the problem of normally carrying out that the influence of high-temperature fusion ring formation is produced in the kiln-process phosphoric acid production process, design a kind of inner ring formation mechanical chipping of kiln-process phosphoric acid rotary kiln mechanism of can not stop and carrying out the ring formation cleaning in running.
The technical solution of the utility model is:
The inner ring formation mechanical chipping of a kind of kiln-process phosphoric acid rotary kiln mechanism, comprise and a plurality ofly arranging along kiln body circumferential and axial, hammer 1 into shape with the cleaning that the kiln body rotates, an end that it is characterized in that the tup 2 of described cleaning hammer 1 passes the kiln body and stretches in the kiln chamber, it is external relative with waveform guider 3 that the other end of tup 2 stretches out kiln, the back-moving spring that the end that makes tup 2 be arranged in the kiln chamber offsets with the kiln cavity wall all the time is installed on the tup 2 of cleaning hammer 1, being bearing on the synchronization lifting post 4 of described waveform guider 3, synchronization lifting post 4 is installed on the fixed mount 5, and fixed mount 5 is installed in the both sides of kiln body.
Described synchronization lifting post 4 links to each other with hydraulic cylinder, on the top of synchronization lifting post 4 limit switch 6 is installed.
The every circle circumferential arrangement of described kiln body has 6-8 cleaning hammer 1, and the axial distance of the cleaning hammer of adjacent turn is a 1-1.4 rice, and 1 dislocation of the cleaning of adjacent turn hammer is arranged.
The beneficial effects of the utility model:
The utility model has solved the interior ring formation problem of kiln of kiln-process phosphoric acid nucleus equipment, and then prolonged the device cleaning room interval, cleaning room is every extending to about 50 days from present about 20 days, thereby realized the long-term operation of kiln-process phosphoric acid process units, satisfied Chemical Manufacture year operating time greater than 6750 hours requirement, help significantly improving the phosphorus percent reduction and the rate of recovery, phosphorous recovery can be increased to 85% from 65%, can save a large amount of energy simultaneously.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the arrangement states schematic diagram of cleaning hammer of the present utility model on the kiln body.
Among the figure: arrow A is represented kiln body direction of rotation, the position view the when position view when B represents that the waveform guider is in non-cleaning state, C represent that the waveform guider is in the cleaning state, and D represents the cleaning work district, 8 expression control systems.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further described.
As shown in Figure 1, 2.
The inner ring formation mechanical chipping of a kind of kiln-process phosphoric acid rotary kiln mechanism, comprise and a plurality ofly arranging along kiln body circumferential and axial, hammer 1 into shape with the cleaning that kiln body 7 rotates, the every circle circumferential arrangement of kiln body has 6-8 cleaning hammer 1, the axial distance of the cleaning hammer of adjacent turn is a 1-1.4 rice, and 1 dislocation of the cleaning of adjacent turn hammer is arranged, as shown in Figure 2, one end of the tup 2 of described each cleaning hammer 1 passes kiln body 7 and stretches in the kiln chamber, it is external relative with waveform guider 3 that the other end of tup 2 stretches out kiln, the back-moving spring that the end that makes tup 2 be arranged in the kiln chamber offsets with the kiln cavity wall all the time is installed on the tup 2 of cleaning hammer 1, being bearing on the synchronization lifting post 4 of described waveform guider 3, synchronization lifting post 4 is installed on the fixed mount 5, fixed mount 5 is installed in the both sides of kiln body, as shown in Figure 1.Synchronization lifting post 4 can adopt hydraulic control during concrete enforcement, and synchronization lifting post 4 links to each other with hydraulic cylinder, on the top of synchronization lifting post 4 limit switch 6 is installed.The electric control system of present embodiment is comparatively simple, can adopt prior art to be realized.
The design of mechanical type cleaning plant of the present utility model imagination is not heat ring formation district temperature at feed under the kiln body normal running conditions or not to reduce under the condition about 300 ℃, makes the metaphosphoric acid ring formation that concentrates at kiln body inboard obtain clearing up automatically fast.The cleaning system only just opens operation to a certain degree the time at ring formation.Under the ordinary production operating mode, the cleaning hammer that is distributed on the kiln body is ready, and only rotates naturally with the kiln body; When needs are cleared up, control system starts outside elevating mechanism and enters the cleaning work state, cleaning hammer contacts with the waveform guider being threaded to the clear position hour hammer head part of setting above the kiln body with the kiln body, under the effect of waveform guider, the tup part moves up and down to kiln body inboard, thereby the hammering ring formation bed of material comes off bed of material fragmentation, realizes the purpose of ring formation cleaning.
Some cleaning hammers are fixed on the kiln body and rotate with the kiln body, the hammering axle of installation tup 2 passes kiln body steel body by some apertures of opening on the kiln body and fire brick layer stretches in the kiln body, tup is installed in the inserting end termination of hammering axle, and tup and associated components all adopt the refractory metal material manufacturing.Under the non-cleaning work state, cleaning hammer 1 rotates freely with the kiln body.The waveform guider is away from cleaning hammer, and the cleaning hammer is not subjected to the external force effect can not do motion to clear up.Control system of the present utility model can adopt hydraulic control, form by hydraulic control circuit and operation bench, send the cleaning signal according to ring formation situation in the kiln, and drive the wave mode guider and enter the cleaning work state, drive guider after ring formation cleans out again and enter the off-line state cleaning.
The material of each vitals of the present utility model must satisfy heatproof and require: rotary kiln temperature is higher than 800 ℃, the rotary kiln material is the carbon steel inner lining refractory block, the cleaning hammer is installed on the rotary kiln, regularly ring formation thing in the kiln is pushed away, push away mechanism's part and contact with high-temperature gas, therefore should take reasonable measure guarantees that the strength of materials meets the demands.
The track design of cleaning hammer will be rationally to prevent kiln height warm deformation, and rotary kiln can not stop operating, and under the ordinary production operating mode, the cleaning hammer that is distributed on the kiln body is ready, and only rotates naturally with the kiln body; When needs are cleared up, control system starts outside waveform guider and contacts with the cleaning hammer near the kiln body, thereby enter the cleaning work state, cleaning is hammered into shape when being threaded to the clear position of setting above the kiln body with the kiln body to the inboard hammering ring formation of the kiln body bed of material, bed of material fragmentation is come off, thereby realize the purpose of ring formation cleaning.The design of cleaning structure track is wanted rationally, guarantees that cleaning mechanism in time enters duty by control system and guarantees from regulation zone (quadrant) hammering when needs use.
Because kiln hood has elephant trunk to link to each other with the kiln tail and not stall of equipment is moving, air bubble and electronic execution cleaning structure is installed on the kiln can't implements ring formation thing cleaning in the kiln, can only select mechanical actuating mechanism, so appropriate design control system startup external orientation mechanism is very important.
The utility model does not relate to the part prior art that maybe can adopt all same as the prior art to be realized.
Claims (3)
1, the inner ring formation mechanical chipping of a kind of kiln-process phosphoric acid rotary kiln mechanism, comprise and a plurality ofly arranging along kiln body circumferential and axial, hammer (1) into shape with the cleaning that the kiln body rotates, an end that it is characterized in that the tup (2) of described cleaning hammer (1) passes the kiln body and stretches in the kiln chamber, it is external relative with waveform guider (3) that the other end of tup (2) stretches out kiln, the back-moving spring that the end that makes tup (2) be arranged in the kiln chamber offsets with the kiln cavity wall all the time is installed on the tup (2) of cleaning hammer (1), being bearing on the synchronization lifting post (4) of described waveform guider (3), synchronization lifting post (4) is installed on the fixed mount (5), and fixed mount (5) is installed in the both sides of kiln body.
2, the inner ring formation mechanical chipping of kiln-process phosphoric acid rotary kiln according to claim 1 mechanism is characterized in that described synchronization lifting post (4) links to each other with hydraulic cylinder, is equipped with limit switch (6) on the top of synchronization lifting post (4).
3, the inner ring formation mechanical chipping of kiln-process phosphoric acid rotary kiln according to claim 1 mechanism, it is characterized in that the every circle circumferential arrangement of described kiln body has 6-8 cleaning hammer (1), the axial distance of the cleaning hammer of adjacent turn is a 1-1.4 rice, and the cleaning of adjacent turn hammer (1) dislocation is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200357738U CN201366421Y (en) | 2009-03-20 | 2009-03-20 | Mechanical cleaning mechanism for internal ring formation of kiln-method phosphoric acid rotary kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200357738U CN201366421Y (en) | 2009-03-20 | 2009-03-20 | Mechanical cleaning mechanism for internal ring formation of kiln-method phosphoric acid rotary kiln |
Publications (1)
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|---|---|
| CN201366421Y true CN201366421Y (en) | 2009-12-23 |
Family
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|---|---|---|---|
| CNU2009200357738U Expired - Lifetime CN201366421Y (en) | 2009-03-20 | 2009-03-20 | Mechanical cleaning mechanism for internal ring formation of kiln-method phosphoric acid rotary kiln |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101846448A (en) * | 2010-06-10 | 2010-09-29 | 湖北声荣环保节能科技有限公司 | Horizontal rotary heating furnace capable of eliminating clinker rings |
| WO2014194567A1 (en) * | 2013-06-04 | 2014-12-11 | 四川玖长科技有限公司 | Rotary kiln for reducing phosphate ore in kiln process for production of phosphoric acid and method for solving ring forming in kiln tail in kiln process for production of phosphoric acid |
| US9982947B2 (en) | 2013-06-04 | 2018-05-29 | Sichuan Ko Chang Technology Co., Ltd. | Rotary kiln for reducing phosphate ore in kiln phosphoric acid process and method for solving ring forming in kiln tail in kiln phosphoric acid process |
| CN112964078A (en) * | 2021-02-07 | 2021-06-15 | 安徽工业大学 | Breaking-in robot for concretion on surface of rotary kiln lining and using method |
-
2009
- 2009-03-20 CN CNU2009200357738U patent/CN201366421Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101846448A (en) * | 2010-06-10 | 2010-09-29 | 湖北声荣环保节能科技有限公司 | Horizontal rotary heating furnace capable of eliminating clinker rings |
| WO2014194567A1 (en) * | 2013-06-04 | 2014-12-11 | 四川玖长科技有限公司 | Rotary kiln for reducing phosphate ore in kiln process for production of phosphoric acid and method for solving ring forming in kiln tail in kiln process for production of phosphoric acid |
| US9982947B2 (en) | 2013-06-04 | 2018-05-29 | Sichuan Ko Chang Technology Co., Ltd. | Rotary kiln for reducing phosphate ore in kiln phosphoric acid process and method for solving ring forming in kiln tail in kiln phosphoric acid process |
| CN112964078A (en) * | 2021-02-07 | 2021-06-15 | 安徽工业大学 | Breaking-in robot for concretion on surface of rotary kiln lining and using method |
| CN112964078B (en) * | 2021-02-07 | 2022-06-14 | 安徽工业大学 | Breaking-in robot for concretion on surface of rotary kiln lining and using method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SINOPEC NANJING ENGINEERING + CONSTRUCTION INC. Free format text: FORMER NAME: NANJING INST. OF DESIGN, SINOPEC |
|
| CP03 | Change of name, title or address |
Address after: 211100, No. 1189, Jian Jian Road, Dongshan Town, Jiangning District, Jiangsu, Nanjing Patentee after: Sinopec Nanjing Engineering & Construction Inc. Address before: 210048 Jiangsu Province, Nanjing city Liuhe District Dachang geguan Road No. 268 Patentee before: Nanjing Inst. of Design, SINOPEC |
|
| CX01 | Expiry of patent term |
Granted publication date: 20091223 |
|
| CX01 | Expiry of patent term |