CN202482228U - Novel high-efficiency vertical preheater - Google Patents
Novel high-efficiency vertical preheater Download PDFInfo
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- CN202482228U CN202482228U CN2012200875669U CN201220087566U CN202482228U CN 202482228 U CN202482228 U CN 202482228U CN 2012200875669 U CN2012200875669 U CN 2012200875669U CN 201220087566 U CN201220087566 U CN 201220087566U CN 202482228 U CN202482228 U CN 202482228U
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- preheating chamber
- pipe
- preheating
- chamber
- feed
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Abstract
A novel high-efficiency vertical preheater comprises preheating chambers (3), branch air ducts (7), a main exhaust duct (9), a feeding pipe (1), an inclined board (11), a discharge hopper (5), ejector pads (4) and the like. A plurality of the preheating chambers (3) are arranged in sequence to form a ring-form body, wherein a hung ceiling (10) is installed on an inner side of the ring-like body and a hot wind distribution chamber (6) is arranged between the hung ceiling (10) and the discharge hopper (5). An intermediate beam (13) is installed in each preheating chamber (3), the branch air ducts (7) and no less than two feeding pipes (1) are arranged on the top of the preheating chambers (3), and the branch air ducts (7) are communicated with the main exhaust duct (9). The lower end of the feeding pipe (1) is provided with a material layer regulating pipe (2), and a lower portion of the preheating chamber (3) is the inclined board (11) which is connected with the outlet hopper (5). The ejector pads (4) is mounted on the inclined board (11) which is connected with a power plant (12), and the power plant (12) controls the simultaneous reciprocating motion of no less than two ejector pads (4). Accordingly, bed thickness in the preheating chamber in even and adjustable, heat transfer is uniform, heat efficiency is high, and recovery of waste gas and heat is complete.
Description
Technical field
The utility model relates to makes granular quickened lime equipment technical field, a kind of shaft preheater of novel high heat transfer efficient.
Background technology
Up to now, the thermo-efficiency that improves the calcined by rotary kiln system is pursuing one's goal of insider all the time, and the way of general character is the different in kind of material, sets up various forms of preheating units at the rotary kiln tail.In granular quickened lime production system, the form of preheating unit mainly contains following several kinds: one of which, comb formula preheating machine.It is to be installed in one section level comb formula preheating unit of rotary kiln tail; It is made up of comb plate, chain and transmission mechanism, and material places on the comb plate, under the effect of transmission mechanism; Chain drives the motion of comb plate along continuous straight runs, and the high-temp waste gas that goes out rotary kiln passes the bed of material and carries out heat exchange; This device hear rate decreases, and system throughput also increases to some extent, but equipment is huge, complex structure, and running gear is many, and use and maintenance cost is too high.Its two, ring storehouse formula shaft preheater is made up of body, push rod device etc.Its this body profile is a cylinder annular feed bin; Material is by the annular stock column of feed bin top adding formation, and kiln tail high-temp waste gas gets into feed bin through the material-pulling device top, passes stock column then material is carried out preheating; Discharge through feed bin top afterwards, release by push rod through the material of preheating; This device hear rate is lower, but complex structure, failure rate is high.They are three years old; Divide the storehouse shaft preheater, be made up of last feed compartment, preheater, hydraulic push rod device, the material of feed compartment gets in the preheating storehouse of preheater through the tremie pipe with an excellent valve; High-temp waste gas preheater bottom from the kiln tail gets into preheating storehouse preheating material; Airduct is discharged from top then, then, starts the material of each suspension type hydraulic push rod device after with preheating successively and pushes in the rotary kiln.The energy consumption of this preheater is low, the part Wingdale can also decompose in preheating.Deficiency is: (1) preheater sodalime stone skewness weighing apparatus, conduct heat inhomogeneous, thermo-efficiency is lower.Various forms of shaft preheater material receiving areas are all in the inboard in preheater transverse section; Outer space Wingdale in the inner part tumbles the back accumulation along the slope of repose, receive the influence of Wingdale slope of repose and segregation effect, and the discrepancy in elevation of the outside bed of material is very big in the preheater; The maldistribution of limestone granularity; The resistance difference that runs into when passing the bed of material from the high-temp waste gas of kiln tail is big, the hot blast skewness, and Wingdale is heated unbalanced.(2) predecomposition rate is low.Various forms of shaft preheater dischargings all are provided with a plurality of material-pulling devices, but can only successively Wingdale be pushed in the rotary kiln, and during certain material-pulling device pusher, other material-pulling device is in waiting status, and material-pulling device is many more, and the waiting time is long more; When material-pulling device is in waiting status; The Wingdale on its top then remains static; Along with the carrying out of exchange, the temperature head of material and hot gas flow is more and more littler, even trend " zero "; Thereby slowed down heat by limestone surfaces heat passage to inside, also reduced the predecomposition rate of preheater.In addition, high more to the requirement of output, the feed compartment diameter is big more, and the difficulty of bringing many structure treatment for corresponding supporting structure has influenced the more development of large industrialized production.
Summary of the invention
The utility model purpose is to address the above problem, and for the production of granular lime provides a kind of novel efficient shaft preheater, makes it balanced preheating material, has high thermo-efficiency, and is more abundant to the recovery of high-temp waste gas heat.
Be the technical scheme that realizes that above-mentioned purpose is taked: the utility model includes: preheating chamber, branch wind pipe, variable valve, total exhaust duct, feed-pipe, bed of material adjustable pipe, hot blast distribution chamber, tilted plate, discharge bucket, pushing block and PWR PLT etc.Preheating chamber has several, several, the separate preheating chamber body circlewise that is combined, the inboard appropriate location of ring bodies is provided with furred ceiling, the space between furred ceiling and the discharge bucket is the hot blast distribution chamber; The appropriate location is provided with intermediate beam in each preheating chamber, and the top of each preheating chamber is provided with branch wind pipe and is no less than 2 feed-pipe; Variable valve is housed on the branch wind pipe, and each branch wind pipe is communicated with total exhaust duct; Be provided with bed of material adjustable pipe in the lower end of feed-pipe; The bottom of each preheating chamber is a tilted plate, and tilted plate is connected with discharge bucket, and the corresponding tilted plate in preheating chamber bottom is provided with pushing block, and pushing block can be along the to-and-fro movement of tilted plate upper surface, and pushing block is connected with PWR PLT; It is simultaneously reciprocating that PWR PLT control is no less than 2 pushing blocks.PWR PLT can be hydraulicefficiency plant, can be mechanism, pneumatics etc. also, generally adopt hydraulicefficiency plant better.
Raw material limestone gets into preheating chamber by feed-pipe, under the effect of bed of material adjustable pipe, makes the thickness of Wingdale in preheating chamber even basically; Under the effect of PWR PLT, pushing block promotes Wingdale and is unloaded to rotary kiln by discharge bucket along the tilted plate to-and-fro movement of preheating chamber bottom; Pushing block promotes Wingdale and causes the volumetric expansion of stockpile to be alleviated by intermediate beam; Because PWR PLT control is no less than 2 pushing blocks pusher simultaneously; Wingdale in a plurality of preheating chambers is wriggled from top to bottom simultaneously; Material and hot gas flow have the more time to keep bigger temperature head, have improved heat exchanger effectiveness, and the heat recuperation that waste gas is taken out of is abundant; And the high-temp waste gas that rotary kiln comes gets into the hot blast distribution chamber by discharge bucket, gets into each preheating chamber then equably, and Wingdale is carried out preheating, and the waste heat of high-temp waste gas is further utilized; High-temp waste gas is after carrying out preheating to Wingdale, and the branch wind pipe by the preheating chamber top drains into cleaning apparatus, emptying after the dedusting through total exhaust duct again.Because the utility model is provided with at the top of each preheating chamber and is no less than 2 feed-pipe; Be provided with bed of material adjustable pipe in the lower end of feed-pipe; Make the thickness of Wingdale in preheating chamber even basically; The resistance that high-temp waste gas receives through Wingdale the time is basic identical, also just makes the preheating of Wingdale comparatively even.
Because the utility model has adopted said structure, make the bed thickness in the preheating chamber even, adjustable, heat transfer is even, thermo-efficiency is high, and is more abundant to the recovery of high-temp waste gas heat, reclaimed the dust that the part high-temp waste gas is taken away simultaneously, purified air.
Description of drawings
Accompanying drawing 1 is the utility model synoptic diagram.
The solid line of band arrow is represented the streams route among the figure, and the dotted line of band arrow is represented airflow route.
Embodiment
Accompanying drawing is the embodiment of the utility model.It includes: preheating chamber 3, branch wind pipe 7, variable valve 8, total exhaust duct 9, feed-pipe 1, bed of material adjustable pipe 2, tilted plate 11, hot blast distribution chamber 6, discharge bucket 5, pushing block 4 and PWR PLT 12 etc.Preheating chamber 3 has several, several, separate preheating chamber 3 body circlewise that is combined; The inboard appropriate location of ring bodies is provided with furred ceiling 10, and the space between furred ceiling 10 and the discharge bucket 5 is a hot blast distribution chamber 6; The top of each preheating chamber 3 is provided with branch wind pipe 7 and is no less than 2 feed-pipe 1; Variable valve 8 is housed on the branch wind pipe 7, and each branch wind pipe 7 is communicated with total exhaust duct 9; Be provided with bed of material adjustable pipe 2 in the lower end of feed-pipe 1; Preheating chamber 3 bottoms are tilted plate 11, and tilted plate 11 is communicated with discharge bucket 5, form hot blast distribution chamber 6 between the upper space of discharge bucket 5 and the furred ceiling 10; Preheating chamber 3 corresponding tilted plates 11 are provided with pushing block 4, and pushing block 4 is connected with PWR PLT 12, and it is simultaneously reciprocating that PWR PLT 12 controls are no less than 2 pushing blocks 4.PWR PLT 12 can be hydraulicefficiency plant, also can be mechanism, pneumatics etc., and present embodiment adopts hydraulic power station.
Raw material limestone gets into preheating chamber 3 by feed-pipe 1, and the thickness of Wingdale in preheating chamber 3 is even basically making under the effect of bed of material adjustable pipe 2; Under the effect of PWR PLT 12, pushing block 4 promotes Wingdale and is unloaded to rotary kiln by discharge bucket 5 along tilted plate 11 to-and-fro movements of preheating chamber 3 bottoms; Because PWR PLT 12 controls are no less than 2 pushing blocks 4 pusher simultaneously; Wingdale in a plurality of preheating chambers 3 is wriggled from top to bottom simultaneously; Material and hot gas flow have the more time to keep bigger temperature head, have improved heat exchanger effectiveness, and the heat recuperation that waste gas is taken out of is abundant; And the high-temp waste gas that rotary kiln comes gets into hot blast distribution chamber 6 by discharge bucket 5, gets into each preheating chamber 3 then equably, and Wingdale is carried out preheating, and the waste heat of high-temp waste gas is further utilized; High-temp waste gas is after carrying out preheating to Wingdale, and the branch wind pipe 7 by preheating chamber 3 tops drains into cleaning apparatus, emptying after the dedusting through total exhaust duct 9 again.
Because the utility model has adopted said structure, make the bed thickness in the preheating chamber 3 even, adjustable, heat transfer is even, thermo-efficiency is high, and is more abundant to the recovery of high-temp waste gas heat, reclaimed the dust that the part high-temp waste gas is taken away simultaneously, purified air.
Claims (2)
1. new and effective shaft preheater; Include preheating chamber (3), feed-pipe (1), pushing block (4) and PWR PLT (12); It is characterized in that also including branch wind pipe (7), variable valve (8), total exhaust duct (9), bed of material adjustable pipe (2), tilted plate (11), discharge bucket (5); Preheating chamber (3) has several, several, separate preheating chamber (3) body circlewise that is combined; The inboard appropriate location of ring bodies is provided with furred ceiling (10), and the space between furred ceiling (10) and the discharge bucket is hot blast distribution chamber (6); The top of preheating chamber (3) is provided with branch wind pipe (7) and is no less than 2 feed-pipe (1); Variable valve (8) is housed on the branch wind pipe (7), and each branch wind pipe (7) is communicated with total exhaust duct (9); Be provided with bed of material adjustable pipe (2) in the lower end of feed-pipe (1); Preheating chamber (3) bottom is tilted plate (11); Tilted plate (11) is connected with discharge bucket (5); The tilted plate (11) that preheating chamber (3) is corresponding is provided with pushing block (4); Pushing block (4) is connected with PWR PLT (12), and it is simultaneously reciprocating that PWR PLT (12) are controlled the pushing block (4) that is no less than 2.
2. new and effective shaft preheater according to claim 1 is characterized in that the appropriate location is provided with intermediate beam (13) in each preheating chamber (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200875669U CN202482228U (en) | 2012-03-10 | 2012-03-10 | Novel high-efficiency vertical preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200875669U CN202482228U (en) | 2012-03-10 | 2012-03-10 | Novel high-efficiency vertical preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202482228U true CN202482228U (en) | 2012-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200875669U Expired - Lifetime CN202482228U (en) | 2012-03-10 | 2012-03-10 | Novel high-efficiency vertical preheater |
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| CN (1) | CN202482228U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110937827A (en) * | 2019-12-27 | 2020-03-31 | 中冶焦耐(大连)工程技术有限公司 | Middle air guide device and method of rotary lime kiln preheater |
-
2012
- 2012-03-10 CN CN2012200875669U patent/CN202482228U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110937827A (en) * | 2019-12-27 | 2020-03-31 | 中冶焦耐(大连)工程技术有限公司 | Middle air guide device and method of rotary lime kiln preheater |
| CN110937827B (en) * | 2019-12-27 | 2023-09-19 | 中冶焦耐(大连)工程技术有限公司 | Middle air guide device and method of limestone rotary kiln preheater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: TAIAN ZHONGYI HEAVY INDUSTRY EQUIPMENT CO., LTD. Free format text: FORMER OWNER: TAIAN ZHONGYI POWDER THERMOTECHNICAL INST. Effective date: 20141224 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20141224 Address after: 271000 Tai'an high tech Zone, North Gate Street, No. 2907, No. Patentee after: TAIAN ZHONGYI HEAVY TYPE INDUSTRIAL EQUIPMENT CO., LTD. Address before: 271000 Tai'an high tech Zone, North Gate Street, No. 2907, No. Patentee before: Taian Zhongyi Powder Heat Engineering Institute |
|
| CX01 | Expiry of patent term |
Granted publication date: 20121010 |
|
| CX01 | Expiry of patent term |