CN1973987A - Device for preventing and eliminating scale in inside wall of fluidized bed - Google Patents
Device for preventing and eliminating scale in inside wall of fluidized bed Download PDFInfo
- Publication number
- CN1973987A CN1973987A CN 200610022245 CN200610022245A CN1973987A CN 1973987 A CN1973987 A CN 1973987A CN 200610022245 CN200610022245 CN 200610022245 CN 200610022245 A CN200610022245 A CN 200610022245A CN 1973987 A CN1973987 A CN 1973987A
- Authority
- CN
- China
- Prior art keywords
- fluid bed
- prevents
- inwall
- liner plate
- knot wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000012530 fluid Substances 0.000 claims description 68
- 239000000463 material Substances 0.000 claims description 33
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 10
- 239000004202 carbamide Substances 0.000 claims description 10
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 10
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 10
- 239000004094 surface-active agent Substances 0.000 claims description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 239000004411 aluminium Substances 0.000 claims description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- -1 polytetrafluoroethylene Polymers 0.000 claims description 5
- 239000005864 Sulphur Substances 0.000 claims description 4
- 230000008602 contraction Effects 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 claims description 3
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical group [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 3
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000001035 drying Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000005469 granulation Methods 0.000 description 2
- 230000003179 granulation Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000000935 solvent evaporation Methods 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
Landscapes
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
The present invention discloses one kind of device for preventing and eliminating scale in the inside wall of fluidized bed, and features that the device includes a lining plate and a fixing mechanism. The lining plate in the shape fitting the inner wall is fixed through the fixing mechanism to the easy-to-scale inner wall region of fluidized bed. The device can prevent and eliminate scale in the inside wall of fluidized bed to realize long production period of the plant.
Description
Technical field
The present invention relates to a kind of device of material that prevent or eliminate at fluid bed inwall knot wall.
Background technology
Because the many advantage of fluid bed aspect heat transfer, mass transfer, the application of fluid bed in granulation, drying more and more widely, in processes such as fluidized bed prilling, drying, material enters in the fluid bed in the mode of solution, fused solution, suspension, emulsion, carry out drying, granulation through processes such as cooling or solvent evaporations, in this process, material is easy in fluid bed to tie wall by crystallization, mode such as condense in bed.The common practice of handling for material knot wall in the fluid bed is after fluid bed moves a period of time at present, parking is handled, drop and smash dispersion plate, feed liquid atomizer to avoid tying the wall material, this has become the biggest obstacle that influences the operation of fluid bed long period.For example, produce in the granular urea technology at fluidized bed prilling at present, no matter be the fluid bed of Norway's Hydro, the spouted fluidized bed of Japanese TEC, French K-T's is rotary drum fluid-bed, all exists because urea tie wall in bed to jeopardize the situation generation of producing and must stop and clean.
Summary of the invention
The technical problem to be solved in the present invention is how a kind of device that prevents or eliminate fluid bed inwall knot wall is provided, and this device can prevent or eliminate material in fluid bed inwall knot wall phenomenon, the long period production of implement device in that equipment is in service.
The technical problem that proposes of the present invention is to solve like this: a kind of device that prevents or eliminate fluid bed inwall knot wall is provided, it is characterized in that, comprise liner plate and fixed mechanism, described liner plate is arranged on the zone that the fluid bed inwall easily produces material knot wall by described fixed mechanism, and the shape of described liner plate and fluid bed inwall is suitable.
According to the device that prevents or eliminate fluid bed inwall knot wall provided by the present invention, it is characterized in that, described fixed mechanism mainly is made of some nuts, bolt, wherein bolt is fixed on the described fluid bed inwall by nut, the other end is provided with nut, described liner plate be installed on the bolt and with fluid bed inwall matched in clearance, and can shake up and down along bolt.
According to the device that prevents or eliminate fluid bed inwall knot wall provided by the present invention, it is characterized in that described liner material quality can be a kind of in aluminium, stainless steel, polytetrafluoroethylene (PTFE), polyester, the rubber.
According to the device that prevents or eliminate fluid bed inwall knot wall provided by the present invention, it is characterized in that the one side of described liner plate contact material is set to zigzag structure, is convenient to breaking and coming off of sticking wall material.
According to the device that prevents or eliminate fluid bed inwall knot wall provided by the present invention, it is characterized in that the one side of described liner plate contact material scribbles surfactant, described surfactant is dodecyl sodium sulfate or tertiary sodium phosphate.
According to the device that prevents or eliminate fluid bed inwall knot wall provided by the present invention, it is characterized in that described gap can be set to 0.5～30cm.
According to the device that prevents or eliminate fluid bed inwall knot wall provided by the present invention, it is characterized in that described gap can be set to 1～20cm.
According to the device that prevents or eliminate fluid bed inwall knot wall provided by the present invention, it is characterized in that the thickness of described liner plate can be set to 0.05～2cm.
According to the device that prevents or eliminate fluid bed inwall knot wall provided by the present invention, it is characterized in that described fluid bed can be a kind of in fluid bed, spouted bed, spouted fluidized bed, rotary drum fluid-bed, the vibrated fluidized bed.
According to the device that prevents or eliminate fluid bed inwall knot wall provided by the present invention, it is characterized in that the zone of easily luming is meant zones such as fluid bed hydrojet district, fluid bed top contraction section, top gas outlet; Described material is urea liquid or sulphur fused solution or ammonium nitrate solution before condensing.
According to the device that prevents or eliminate fluid bed inwall knot wall provided by the present invention, it is characterized in that described fixed mechanism can also be set to flexible connection mode, liner plate can be hung in the fluid bed inwall by rope.
The present invention utilizes the frequent fluctuation of fluid bed internal pressure; the liner plate that drives the fluid bed inwall produces vibration deformation repeatedly; thereby make the material distortion that condenses on the liner plate, break and come off naturally; make material can't form thick and big caking; thereby avoided big agllutination wall material to fall down internals such as smashing comminutor distributed pole, feed liquid shower nozzle, eliminated the parking accident that causes thus.
Description of drawings
Fig. 1 is the generalized section that prevents or eliminate the device of fluid bed inwall knot wall provided by the present invention.
Wherein, 1, bolt, 2, liner plate, 3, the fluid bed top cover, 4, nut, 5, packing ring, 6, the gap, 7, the fluid bed inwall, 8, nut.
The specific embodiment
The present invention is described in detail below in conjunction with accompanying drawing.
As shown in Figure 1, the device that prevents or eliminate fluid bed inwall knot wall provided by the present invention, (mainly demonstrating fluid bed top cover 3 and fluidized bed gas exit region), comprise liner plate 2 and fixed mechanism, liner plate 2 is arranged on the zone that fluid bed inwall 7 easily produces material knot wall by fixed mechanism, liner plate 2 is suitable with the shape of fluid bed inwall 7, the thickness of this liner plate can be set to 0.04～1cm, optimum is 0.05cm or 0.8cm, wherein fixed mechanism can be realized by several modes, generally by some nuts, bolt constitutes, wherein bolt 1 is fixed on the described fluid bed inwall 7 by nut 2, the other end is provided with nut 8, liner plate 2 be installed on the bolt 1 and with fluid bed inwall matched in clearance, this gap can be set to 0.5～30cm, optimum is 1～20cm, liner plate 2 can be shaken up and down along bolt 1, and described in addition fixed mechanism can also be set to flexible connection mode, and liner plate 2 can be hung in fluid bed inwall 7 by rope.Liner plate 2 materials can be a kind of in aluminium, stainless steel, polytetrafluoroethylene (PTFE), polyester, the rubber, adopt materials such as aluminium and stainless steel usually.The one side of liner plate 2 contact materials is set to zigzag structure, is convenient to breaking and coming off of sticking wall material, also has the one side of liner plate contact material also can coat surfactant, and surfactant is dodecyl sodium sulfate or tertiary sodium phosphate.
Wherein fluid bed 3 can be a kind of in fluid bed, spouted bed, spouted fluidized bed, rotary drum fluid-bed, the vibrated fluidized bed, easily the caking zone is meant zones such as fluid bed hydrojet district, fluid bed top contraction section, top gas outlet, material can be solution, fused solution, suspension before condensing, as solution such as urea molten (melting) liquid, sulphur fused solution or ammonium nitrate.
Device provided by the present invention can be according to the bed top dimension, adopt the liner plate of different-thickness, unlike material to be installed on a top and gas vent zone, in order to strengthen the Oscillation Amplitude of liner plate, liner plate is installed and has been adopted flexible support, be that liner plate is reciprocating at the effect lower edge carrying bolt of fluid bed fluctuation air-flow, thereby drive the liner plate vibration deformation.For the ease of tying breaking and coming off of wall material, can be processed into the sawtooth pattern structure in interior lining panel contact material one side; Simultaneously, inner lining material contact material one side is handled with surfactant, and used surfactant can be anion, cation or negative and positive particle surface activating agent etc.
Below be several embodiments of the present invention:
Embodiment 1: at large urea granule fluidized bed top and tail gas outlet, adopt thickness be the polyfluortetraethylene plate of 0.8mm as liner plate, according to the bed type, plate is processed into the plate of 600mm * 800mm, opens 4 holes that are used to wear bolt apart from panel edges 100mm place onboard.At the bed inwall perpendicular to wall direction welding set bolt, the distribution of bolt according to the tetrafluoro plate perforate carry out.Fix with movable bolt.Plate and distance between plates are 8mm, and plate is 15mm with bed inwall spacing.Following table is for installing polytetrafluoroethylene (PTFE) liner plate front and back fluidized bed pelletizer operation inwall urea knot wall situation contrast after 30 days additional:
Embodiment 2: at sulfur-coated urea fluid bed top contraction section, adopt thickness be the aluminium sheet of 0.5mm as liner plate, according to the bed type, plate is processed into the plate of 600mm * 400mm, opens 4 holes that are used to wear bolt apart from panel edges 80mm place onboard.Be used for fixing liner plate at the bed inwall perpendicular to wall direction welding set bolt, fixed form is seen accompanying drawing.Spacing is 8mm. between plate and plate, and plate is 20mm with bed inwall spacing.Following table is for installing aluminium sheet front and back fluidized bed pelletizer operation inwall sulphur knot wall situation contrast after 30 days additional:
Embodiment 3: at large urea granule fluidized bed top and tail gas outlet, adopt thickness be the polyfluortetraethylene plate of 0.8mm as liner plate, according to the bed type, plate is processed into the plate of 600mm * 800mm, opens 4 holes that are used to wear bolt apart from panel edges 100mm place onboard.At the bed inwall perpendicular to wall direction welding set bolt, the distribution of bolt according to the tetrafluoro plate perforate carry out.Fix with movable bolt.Plate and distance between plates are 8mm., and plate is 15mm with bed inwall spacing.Simultaneously, with surfactant the tetrafluoro plate is handled.Following table is in the fluidized bed pelletizer operation inwall urea knot wall situation contrast after 30 days before and after surfactant is handled of polytetrafluoroethylene (PTFE) liner plate:
Claims (10)
1, a kind of device that prevents or eliminate fluid bed inwall knot wall, it is characterized in that, comprise liner plate and fixed mechanism, described liner plate is arranged on the zone that the fluid bed inwall easily produces material knot wall by described fixed mechanism, and the shape of described liner plate and fluid bed inwall is suitable.
2, the device that prevents or eliminate fluid bed inwall knot wall according to claim 1, it is characterized in that, described fixed mechanism mainly is made of some nuts, bolt, wherein bolt is fixed on the described fluid bed inwall by nut, the other end is provided with nut, described liner plate be installed on the bolt and with fluid bed inwall matched in clearance, and can shake up and down along bolt.
3, the device that prevents or eliminate fluid bed inwall knot wall according to claim 1 and 2 is characterized in that, described liner material quality can be a kind of in aluminium, stainless steel, polytetrafluoroethylene (PTFE), polyester, the rubber.
4, the device that prevents or eliminate fluid bed inwall knot wall according to claim 1 and 2 is characterized in that, the one side of described liner plate contact material is set to zigzag structure, is convenient to breaking and coming off of sticking wall material.
5, the device that prevents or eliminate fluid bed inwall knot wall according to claim 1 and 2 is characterized in that, the one side of described liner plate contact material scribbles surfactant, and described surfactant is dodecyl sodium sulfate or tertiary sodium phosphate.
6, the device that prevents or eliminate fluid bed inwall knot wall according to claim 2 is characterized in that described gap can be set to 0.5～30cm.
7, the device that prevents or eliminate fluid bed inwall knot wall according to claim 2 is characterized in that described gap can be set to 1～20cm.
8, the device that prevents or eliminate fluid bed inwall knot wall according to claim 1 and 2 is characterized in that the thickness of described liner plate can be set to 0.05～2cm.
9, the device that prevents or eliminate fluid bed inwall knot wall according to claim 1 and 2 is characterized in that, described fluid bed can be a kind of in fluid bed, spouted bed, spouted fluidized bed, rotary drum fluid-bed, the vibrated fluidized bed.
10, the device that prevents or eliminate fluid bed inwall knot wall according to claim 1 is characterized in that the zone of easily luming is meant zones such as fluid bed hydrojet district, fluid bed top contraction section, top gas outlet; Described material is urea liquid or sulphur fused solution or ammonium nitrate solution before condensing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610022245 CN1973987A (en) | 2006-11-10 | 2006-11-10 | Device for preventing and eliminating scale in inside wall of fluidized bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610022245 CN1973987A (en) | 2006-11-10 | 2006-11-10 | Device for preventing and eliminating scale in inside wall of fluidized bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1973987A true CN1973987A (en) | 2007-06-06 |
Family
ID=38124506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610022245 Pending CN1973987A (en) | 2006-11-10 | 2006-11-10 | Device for preventing and eliminating scale in inside wall of fluidized bed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1973987A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101219356B (en) * | 2007-10-09 | 2010-05-19 | 褚开维 | S-type fluid bed |
| CN102549172A (en) * | 2009-10-08 | 2012-07-04 | 株式会社神户制钢所 | Molten metal producing device |
| CN102584499A (en) * | 2012-01-09 | 2012-07-18 | 莱州市精诚橡胶有限公司 | Inner lining for granulator |
| CN105727831A (en) * | 2016-04-18 | 2016-07-06 | 曹兰 | Material attachment prevention pelletizer for fertilizer production |
| CN109070034A (en) * | 2016-07-07 | 2018-12-21 | 卡萨勒有限公司 | Granulators for liquid substances, especially urea |
| CN115927777A (en) * | 2023-01-05 | 2023-04-07 | 唐山精研实业有限责任公司 | Hydrogen-rich reduction large-speed-difference stirring spouted fluidized bed reactor |
-
2006
- 2006-11-10 CN CN 200610022245 patent/CN1973987A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101219356B (en) * | 2007-10-09 | 2010-05-19 | 褚开维 | S-type fluid bed |
| CN102549172A (en) * | 2009-10-08 | 2012-07-04 | 株式会社神户制钢所 | Molten metal producing device |
| CN102549172B (en) * | 2009-10-08 | 2014-01-29 | 株式会社神户制钢所 | Molten metal producing device |
| US9557109B2 (en) | 2009-10-08 | 2017-01-31 | Kobe Steel, Ltd. | Apparatus for manufacturing molten metal |
| CN102584499A (en) * | 2012-01-09 | 2012-07-18 | 莱州市精诚橡胶有限公司 | Inner lining for granulator |
| CN105727831A (en) * | 2016-04-18 | 2016-07-06 | 曹兰 | Material attachment prevention pelletizer for fertilizer production |
| CN109070034A (en) * | 2016-07-07 | 2018-12-21 | 卡萨勒有限公司 | Granulators for liquid substances, especially urea |
| CN115927777A (en) * | 2023-01-05 | 2023-04-07 | 唐山精研实业有限责任公司 | Hydrogen-rich reduction large-speed-difference stirring spouted fluidized bed reactor |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |