CN100348937C - Method and apparatus for drying copolymer of methyl methacrylate-styrene-butadiene - Google Patents
Method and apparatus for drying copolymer of methyl methacrylate-styrene-butadiene Download PDFInfo
- Publication number
- CN100348937C CN100348937C CNB2005100171063A CN200510017106A CN100348937C CN 100348937 C CN100348937 C CN 100348937C CN B2005100171063 A CNB2005100171063 A CN B2005100171063A CN 200510017106 A CN200510017106 A CN 200510017106A CN 100348937 C CN100348937 C CN 100348937C
- Authority
- CN
- China
- Prior art keywords
- mbs
- air
- links
- cyclone separator
- flow
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Drying Of Solid Materials (AREA)
Abstract
The present invention relates to a continuous drying method with the combination of air flow and rotational flow for an MBS. A wet MBS and hot air enter a pulse drier to be dried, and after the moisture is lowered to 10 to 15%, the MBS tangentially enters a rotational flow drier in a rotational vortex mode; time delay drying is carried out for the MBS by using hot water as a heat source, the water content of the MBS is 0.5% after drying, and the MBS orderly enters a cyclone separator and a bag dust remover. The present invention has the operating conditions that the temperature of the air is from 125 to 130 DEG C, the temperature of water is from 70 to 80 DEG C, materials stay 15 to 25 minutes on average, the operation is carried out under negative pressure, and the temperature in the rotational flow drier is from 55 to 60 DEG C. The drier is mainly composed of a screw conveyer, a steam radiator for heating air, the pulse drier, the rotational drier connected with the pulse drier, the cyclone separator connected with the drier, the electrostatic prevention bag dust remover connected with the cyclone separator, a hot water tank, a draught fan, etc. The present invention has the advantages of high drying efficiency, safety, reliability, low energy consumption, etc.
Description
Technical field
The present invention relates to a kind of drying means of powder, relate to a kind of drying means and device of methyl methacrylate-butadiene-styrene specifically.
Background technology
MBS (MBS) mainly is used as the anti-impact modifier of polyvinyl chloride (PVC) resin.China is the production and consumption big country of PVC, and along with improving constantly of living standards of the people, the PVC goods increase very fast, have promoted the development of demand of PVC anti-impact modifier.
In the production process of MBS, drying is an extremely important link, and dried MBS powder is the meeting spontaneous combustion when temperature surpasses, and the accident of MBS60 ℃ of powder spontaneous combustion in the super-dry device once took place in the manufacturer of some MBS.
At present, domestic most MBS manufacturer generally all selects air-flow---fluidized drying method for use, and this drying process exists a lot of drawbacks and hidden danger.Mainly contain following some:
1, complicated operation can only Batch Process, and labour intensity is big, and the finished product water content is difficult to reach unified standard.
2, because of the MBS powder is thinner, material recovery rate is low, has not only wasted energy but also contaminated environment.
3, around in fluidizing fluid-bed the dead angle is arranged, and temperature is higher, occurs the solid accumulation phenomenon easily, overlong time can spontaneous combustion.
In recent years, another kind of combined drying device has also appearred, be the combined dryer of pneumatic conveying drying and cyclone drying or air-flow and cyclone drying, as the patent (patent No. 99119714.3) " a kind of energy-saving combined high-elasticity cyclone drier " of Tsing-Hua University's application.
A kind of energy-saving combined high-elasticity cyclone drier, this device comprises blower fan, gas heater, pneumatic conveyer dryer, rotary flow desiccator, the I and II cyclone separator, it is characterized in that also comprising star feeder, described blower fan has two, and one is the pneumatic conveyer dryer blower fan, and this typhoon machine and gas heater link, one is the rotary flow desiccator blower fan, this blower fan and gas heater link, and are provided with cyclone separator between described pneumatic conveyer dryer and the rotary flow desiccator, and described star heater is located between primary cyclone and the rotary flow desiccator; Height/the footpath of pneumatic conveyer dryer is than being 15-30, and the height/footpath of rotary flow desiccator is than being 5-10.
Contain the bottom that the wet stock feeder is positioned at pneumatic conveyer dryer, material flow through successively pneumatic conveyer dryer and rotary flow desiccator, two strands of drying mediums are respectively behind two typhoon machines and two gas heaters, enter drier from two drier bottoms, going into implication speed is 10～25 meter per seconds, one air-flow that enters rotary flow desiccator accounts for 15～5% of total drying medium, carry and enter cyclone separator after material comes out from the top of rotary flow desiccator and carry out gas solid separation, product is emitted from the cyclone separator bottom, gas then enters pneumatic conveyer dryer for 4～12 meters from distance pneumatic conveyer dryer top, the drying of converging and continue to participate in material with another strand air-flow, combined gas streams is come out from pneumatic conveyer dryer, successively enter two cyclone separators afterwards and carry out gas solid separation, solid material is collected by cyclone separator substantially, go out star-like feeder then and send into the rotary flow desiccator inlet, air-flow is emptying then.Rotary flow desiccator, its Dual-Phrase Distribution of Gas olid inlet is the rotary flow desiccator tangential direction, and the bottom is provided with spiral deflector, and the hand of spiral is consistent with the import tangential direction, and in addition, inside is provided with the conical eddy flow plate of multistage certain kinds.But still there is following deficiency in this covering device:
1, adopts two strands of thermal mediums to enter system and carry out drying, therefore cause the waste of heat energy.
2, drying system is in the positive pressure operation state, causes material to leak easily, pollutes working environment.
Summary of the invention
The objective of the invention is to overcome the deficiency that prior art exists, the drying means of a kind of MBS is provided, the unnecessary economic loss that spontaneous combustion causes when avoiding the MBS powder dry, prevent that powder from leaking, contaminated environment etc.
The purpose of invention realizes by the following technical solutions:
The air-flow of a kind of MBS-eddy flow combined continuous type drying means, to be 40% MBS with water content with screw feeder be the rotating vortex mode with hot-air delivers to and carries out drying in the pulsed pneumatic dryer, water content drops to the MBS of 10-15% under the air-flow effect, be provided with the hot water jacket in its outside, be provided with the charge door place of the rotary flow desiccator of ring baffle in it, enter with tangential direction in the bottom compartment of rotary flow desiccator, with the hot water in the chuck is thermal source, the drying of delaying time, under centrifugal force and air-flow effect, the centre bore of MBS particle by ring baffle is successively through each chamber layer by layer, after the chamber, top enters cyclone separator successively from described rotary flow desiccator outlet, sack cleaner carries out gas-solid separation and dedusting; Its operating condition is: the temperature of hot-air is 125-130 ℃, gas speed is 8-10m/s, Gu gas/than=5: 2, the hot water temperature is 70-80 ℃, and pulsed pneumatic dryer height/footpath is than=62: 3: 2, rotary flow desiccator height/footpath was than=3: 1, system is a negative-pressure operation, pressure is-0.15KPa, and MBS mean residence time in rotary flow desiccator is 15-25 minute, and the temperature that MBS enters cyclone separator is 55-60 ℃.
Above-mentioned air-flow-eddy flow combined continuous type drying means, its described 70-80 ℃ of hot water of rotary flow desiccator drying source that is used as is from the steam heater that adds hot-air.
Realize air-flow-needed drying device of eddy flow combined continuous type drying means of above-mentioned MBS, it mainly is by auger conveyor from MBS to pulsed pneumatic dryer that carry, supply with the steam heater that add hot-air of pulsed pneumatic dryer as thermal source, the rotary flow desiccator that pulsed pneumatic dryer and this pulsed pneumatic dryer link to each other with its charge door by pipeline, boiler and hot water circulating pump to the rotary flow desiccator heat supply, the cyclone separator that links to each other with the rotary flow desiccator top exit, and the sack cleaner that links to each other with this cyclone separator top exit, the air-introduced machine that links to each other with this sack cleaner top exit is formed.
Above-mentioned drying device, the filter cloth of its described sack cleaner are the antistatic filter cloth.
Above-mentioned drying device, the bottom of its described cyclone separator is provided with the buildup case; The back star-like discharger link to each other with the buildup lower box part that is positioned at the cyclone separator bottom; The bottom of the sack cleaner that middle star-like discharger links to each other with the cyclone separator top exit links to each other; The bottom of two above-mentioned star-like dischargers all links to each other with the sack cleaner upper lateral part of front by pipeline, and air-introduced machine links to each other with the sack cleaner top exit of front; The star-like discharger of front links to each other with the sack cleaner bottom of front by its top, and links to each other with charging system by its underpart.
The present invention compared with prior art has following obvious improvement and tangible good effect:
(1) whole drying and dust pelletizing system all are to operate under negative pressure state, prevent that material from leaking, and can alleviate the pollution to environment, and material recovery rate can reach more than 99.8%.
(2) as main heating source, this hot water is the condensed water in the steam heater to rotary flow desiccator, reusable edible with the hot water in the chuck; Hot-air is the pulsed pneumatic dryer tail gas discharged.Reasonable energy utilization is saved the energy.
(3) because whole drying equipment does not have the dead angle, can not produce the solid accumulation phenomenon; And the hot blast of drier is with material and flows contact, though hot blast temperature height in the pulsed pneumatic dryer, with the wet stock contact that contains large quantity of moisture, hot blast temperature sharply descends in the drier, and dried material is heated excessively.Thereby can avoid MBS because of the spontaneous combustion of temperature height, MBS uniform drying; Because of establishing ring baffle and bottom compartment, floor chamber and chamber, top in the rotary flow desiccator, can make MBS time of staying average out to 15～30 minutes in drier, drying effect is obvious.
(4) the MBS powder is thinner, and after the cyclone separator dedusting, some thinner powder reclaims through sack cleaner.This device has adopted special antistatic filter cloth, can prevent the generation of static, avoids the generation of accident.
Description of drawings
Fig. 1 is the process chart of MBS air-flow of the present invention-eddy flow combined continuous type drying means
1-steam heater 2-screw feeder 3-coarse fodder feed bin
4-hot water circulating pump 5-pulsed pneumatic dryer 6-rotary flow desiccator
The star-like discharger 9-of 7-boiler 8-buildup case
The star-like discharger 12-of 10-cyclone separator 11-sack cleaner
The star-like discharger 15-of 13-air-introduced machine 14-sack cleaner
16-air-introduced machine 6a-pushes up 6b-floor chamber, chamber
The 6c-bottom compartment
The specific embodiment
Now the present invention is further described as follows with specific embodiment in conjunction with the accompanying drawings:
Embodiment
The air-flow of a kind of MBS-eddy flow combined continuous type drying means, to be 40% MBS with water content with screw feeder 2 be the rotating vortex mode with hot-air delivers to and carries out drying in the pulsed pneumatic dryer 5, water content drops to the MBS of 10-15% under the air-flow effect, be provided with the hot water jacket in its outside, be provided with the charge door place of the rotary flow desiccator 6 of ring baffle in it, enter with tangential direction in the bottom compartment of rotary flow desiccator 6, with the hot water in the hot water jacket is thermal source, the drying of delaying time, under centrifugal force and air-flow effect, the centre bore of MBS particle by ring baffle is successively through each chamber layer by layer, after the chamber, top enters cyclone separator 10 successively from described rotary flow desiccator 6 outlets, sack cleaner 12 carries out gas-solid separation and dedusting; Its operating condition is: the temperature of hot-air is 125-130 ℃, gas speed is 8-10m/s, Gu gas/than=5: 2 hot water temperatures are 70-80 ℃, pulsed pneumatic dryer 5 height/footpaths are than=62: 3: 2, rotary flow desiccator 6 height/footpaths are than=3: 1, and system is a negative-pressure operation, pressure is-0.15Kpa, MBS mean residence time in the dried drier 6 of eddy flow is 15-25 minute, and the temperature that MBS enters cyclone separator 10 is 55-60 ℃.Low amounts of dust is reclaimed by sack cleaner 12.
Above-mentioned air-flow-eddy flow combined continuous type drying means is characterized in that: described as 70-80 ℃ of hot water carries out heat exchange from air and steam steam heater 1 in the chuck of rotary flow desiccator 6 drying sources.Steam condensate (SC) in this steam heater enters boiler 7, and recycling through hot water circulating pump 4; Used vapour is regulated when temperature is lower than 70 ℃.
Realize air-flow-needed drying device of eddy flow combined continuous type drying means of above-mentioned MBS, it mainly is by auger conveyor 2 from MBS to pulsed pneumatic dryer 5 that carry, supply with pulsed pneumatic dryer 5 as thermal source and the steam heater 1 air heat exchange, the rotary flow desiccator 6 that pulsed pneumatic dryer 5 and this impulse drying device 5 link to each other with its charge door by pipeline, boiler 7 and water pump 4 to rotary flow desiccator 6 heat supplies, the cyclone separator 10 that links to each other with rotary flow desiccator 6 outlets, and the sack cleaner 12 that links to each other with these cyclone separator 10 top exits, the air-introduced machine 13 that links to each other with these sack cleaner 12 top exits is formed.Above-mentioned drying device, the filter cloth of its described sack cleaner 12 are the antistatic filter cloth.
At first feed the steam of 0.3MPa in steam heater, when treating that temperature rises to 50 ℃, starting blower fan 13 adjusting intakes is 15000m
3/ h, and the pressure of adjusting drying system be-0.15Kpa about, when temperature is raised to 120～130 ℃, with screw feeder 2 will be after centrifugal dehydration water content be that about 40% MBS is delivered in the pulsed pneumatic dryer 5, start air-introduced machine 13 simultaneously, under the effect of this blower fan 13, enter rotary flow desiccator bottom coarse fodder feed bin 3.MBS is broken up by the high temperature and high speed air-flow, enters in the pulsed pneumatic dryer 5 through inlet with gas speed 8～10m/s, and its gas-solid ratio is controlled to be 5 to 2; Under the effect of high velocity air, after first order pulsed pneumatic dryer 5 was handled, the water content of MBS was reduced in 10～15%.Hot gas and MBS solid particle be in the rotating vortex mode then, the low temperature drying of delaying time in its porch enters rotary flow desiccator 6 bottom compartments with tangential direction in.In the 6c of bottom compartment, the MBS solid particle is because action of centrifugal force is separated from the gas, and annular retaining is pulled and made described particle be trapped in constantly rotation in the 6c of bottom compartment, and air then passes the annular retaining and pulls centre bore and be raised in the last layer floor chamber 6b; Meanwhile, new solid particle constantly enters the 6c of bottom compartment, when reaching a certain height, the centre bore of pulling by annular retaining enters each layer by layer in the 6b of chamber again, and constantly repeats this filling process, is full of each chamber 6b layer by layer, after pushing up chamber 6a at last and being full of, under the air-flow effect, the solid particle of described MBS enters cyclone separator 10 through the outlet of rotary flow desiccator and carries out gas solid separation, and low amounts of dust is reclaimed by sack cleaner 12.Be provided with buildup case 9 in cyclone separator 10 bottoms.The star-like discharger 8 of back links to each other with the bottom of the buildup case 9 that is positioned at cyclone separator 10 bottoms.Sack cleaner 12 bottoms that middle star-like discharger 11 links to each other with cyclone separator 10 top exits link to each other.Aforesaid two star-like dischargers 8,11 all link to each other with sack cleaner 15 upper lateral parts of front by pipeline; Air-introduced machine 16 links to each other with sack cleaner 15 top exits of front; The star-like discharger 14 of front links to each other with sack cleaner 15 bottoms of front by its top, and links to each other with charging system by its underpart.When dried MBS powder is packed, start air-introduced machine 16, dried MBS powder enters in the sack cleaner 15 through star-like discharger 8,11 and pipeline respectively, enters packaging system through star-like discharger 14 again.
Above-described sack cleaner 12,15 all adopts the instrument air on the device to carry out blowback, and the filter cloth of adding the used sack cleaner of the present invention is the antistatic filter cloth of buying from the market, thereby has improved the rate of recovery of product MBS greatly.
Behind drying means and device drying with MBS of the present invention, its product MBS the key technical indexes sees the following form:
MBS company standard Q/CNPC JH141 015-2005
| Project | Index | |
| MBS powder index | Outward appearance | The white flowing powder |
| Apparent density, g/cm 3 | ≥0.28 | |
| Fugitive constituent, % | ≤1.0 | |
| Granularity, (1000 μ m mesh screen excess), % | ≤1.0 | |
| Impurity content ,/200ml | ≤30 | |
| PVC/MBS blend performance indications | Cantilever beam impact strength, KJ/m 2 | ≥7.0 |
| Light transmittance, % | ≥82.5 | |
| Mist degree, % | ≤6.5 |
Claims (5)
1, the air-flow of a kind of MBS-eddy flow combined continuous type drying means, to be 40% MBS with water content with screw feeder be the rotating vortex mode with hot-air delivers to and carries out drying in the pulsed pneumatic dryer, water content drops to the MBS of 10-15% under the air-flow effect, be provided with the hot water jacket in its outside, be provided with the charge door place of the rotary flow desiccator of ring baffle in it, enter with tangential direction in the bottom compartment of rotary flow desiccator, with the hot water in the hot water jacket is thermal source, the drying of delaying time, under centrifugal force and air-flow effect, the centre bore of MBS particle by ring baffle is successively through each chamber layer by layer, after the chamber, top enters cyclone separator successively from described rotary flow desiccator outlet, sack cleaner carries out gas-solid separation and dedusting; Its operating condition is: the temperature of hot-air is 125-130 ℃, gas speed is 8-10m/s, Gu gas/than=5: 2, the hot water temperature is 70-80 ℃, and pulsed pneumatic dryer height/footpath is than=62: 3: 2, rotary flow desiccator height/footpath was than=3: 1, system is a negative-pressure operation, pressure is-0.15Kpa, and MBS mean residence time in rotary flow desiccator is 15-25 minute, and the temperature that MBS enters cyclone separator is 55-60 ℃.
2, air-flow according to claim 1-eddy flow combined continuous type drying means is characterized in that: 70-80 ℃ of hot water of described thermal source as rotary flow desiccator is from the steam heater that adds hot-air.
3, realize air-flow-needed drying device of eddy flow combined continuous type drying means of the described MBS of claim 1, it mainly is by auger conveyor (2) from MBS to the impulse drying device that carry, supply with pulsed pneumatic dryer as thermal source and the steam heater air heat exchange (1), the rotary flow desiccator (6) that pulsed pneumatic dryer (5) and this pulsed pneumatic dryer link to each other with its charge door by pipeline, boiler (7) and hot water circulating pump (4) to the rotary flow desiccator heat supply, cyclone separator (10) that links to each other with the rotary flow desiccator outlet and the sack cleaner (12) that links to each other with this cyclone separator, the air-introduced machine (13) that links to each other with this sack cleaner (12) top exit is formed.
4, drying device according to claim 3, the filter cloth of its described sack cleaner are the antistatic filter cloth.
5, drying device according to claim 3, the bottom of its described cyclone separator (10) is provided with buildup case (9); The star-like discharger (8) of back links to each other with buildup case (9) bottom that is positioned at cyclone separator (10) bottom; The bottom of the sack cleaner (12) that middle star-like discharger (11) links to each other with cyclone separator (10) top exit links to each other; The bottom of aforesaid two star-like dischargers (8), (11) all links to each other with sack cleaner (15) upper lateral part of front by pipeline; Air-introduced machine (16) links to each other with sack cleaner (15) top exit of front; The star-like discharger (14) of front links to each other with sack cleaner (15) bottom of front by its top, and links to each other with charging system by its underpart.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100171063A CN100348937C (en) | 2005-09-05 | 2005-09-05 | Method and apparatus for drying copolymer of methyl methacrylate-styrene-butadiene |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100171063A CN100348937C (en) | 2005-09-05 | 2005-09-05 | Method and apparatus for drying copolymer of methyl methacrylate-styrene-butadiene |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1731057A CN1731057A (en) | 2006-02-08 |
| CN100348937C true CN100348937C (en) | 2007-11-14 |
Family
ID=35963454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100171063A Expired - Fee Related CN100348937C (en) | 2005-09-05 | 2005-09-05 | Method and apparatus for drying copolymer of methyl methacrylate-styrene-butadiene |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100348937C (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100453572C (en) * | 2006-01-24 | 2009-01-21 | 卢晓 | High rubber content MBS emulsion after-treatment technology |
| CN100443509C (en) * | 2006-07-19 | 2008-12-17 | 山东天力干燥设备有限公司 | Chlorinated polyethylene drying process |
| CN100400996C (en) * | 2006-07-19 | 2008-07-09 | 山东天力干燥设备有限公司 | Nitrogen circulating coal powder air flow internal heating fluidized bed drying technology |
| CN102967136A (en) * | 2012-11-30 | 2013-03-13 | 湖北泰盛化工有限公司 | Method for recovering condensed fluid of glyphosate synthesis solution |
| CN104072760B (en) * | 2013-03-28 | 2016-09-14 | 中国石化仪征化纤有限责任公司 | A kind of PPTA powder body is carried out continuously and is dried and the system and method for classification |
| CN103322784B (en) * | 2013-06-20 | 2014-12-17 | 常州力马干燥工程有限公司 | Cyclonic flash drying device |
| CN104215056A (en) * | 2014-08-22 | 2014-12-17 | 合肥四方磷复肥有限责任公司 | Sodium pyrosulfite drying process |
| CN105057099B (en) * | 2015-07-31 | 2017-07-11 | 湖州杨氏塑料助剂有限公司 | Produce MBS exhaust gas processing device |
| US9738845B2 (en) * | 2015-09-17 | 2017-08-22 | Omnis Thermal Technologies, Llc | Combustible pellet drying system |
| CN105413210B (en) * | 2015-12-30 | 2017-05-17 | 江苏丰益化工科技有限公司 | Drying device used for powdery surfactant and drying method |
| CN107957182A (en) * | 2017-11-20 | 2018-04-24 | 李茵茵 | Efficient air flow dryer is used in a kind of charcoal production |
| CN110257089A (en) * | 2019-06-24 | 2019-09-20 | 四川大学 | Vinasse desiccation and recycling processing method and device |
| CN110183070A (en) * | 2019-06-24 | 2019-08-30 | 上海华畅环保设备发展有限公司 | Oily sludge deoiling method and device |
| CN110229707A (en) * | 2019-07-25 | 2019-09-13 | 祖柏实 | A kind of agriculture and forestry organic waste material low temperature pyrogenation high heating value granular fuel production equipment and process |
| CN114993025B (en) * | 2022-06-28 | 2024-06-07 | 浙江迪邦化工有限公司 | Continuous drying device and method for N, N-cyanoethyl benzyl aniline |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5295310A (en) * | 1990-11-20 | 1994-03-22 | Abb Flakt Ab | Method for drying a particulate material |
| CN1129794A (en) * | 1995-02-23 | 1996-08-28 | 唐克权 | Dry air-flow process with direct combustion |
| CN1147621A (en) * | 1996-02-14 | 1997-04-16 | 蒋大洲 | High-efficiency cyclonic-bed combined drying technology |
| CN1250869A (en) * | 1999-09-29 | 2000-04-19 | 清华大学 | Energy-saving combined high-elasticity cyclone drier |
| AU5199501A (en) * | 2000-06-19 | 2001-12-20 | United Fisheries Limited | Drying and milling |
-
2005
- 2005-09-05 CN CNB2005100171063A patent/CN100348937C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5295310A (en) * | 1990-11-20 | 1994-03-22 | Abb Flakt Ab | Method for drying a particulate material |
| CN1129794A (en) * | 1995-02-23 | 1996-08-28 | 唐克权 | Dry air-flow process with direct combustion |
| CN1147621A (en) * | 1996-02-14 | 1997-04-16 | 蒋大洲 | High-efficiency cyclonic-bed combined drying technology |
| CN1250869A (en) * | 1999-09-29 | 2000-04-19 | 清华大学 | Energy-saving combined high-elasticity cyclone drier |
| AU5199501A (en) * | 2000-06-19 | 2001-12-20 | United Fisheries Limited | Drying and milling |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1731057A (en) | 2006-02-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100348937C (en) | Method and apparatus for drying copolymer of methyl methacrylate-styrene-butadiene | |
| CN104110941B (en) | The ciculation fluidized bed drying method of partial tail gas and equipment | |
| CN100443509C (en) | Chlorinated polyethylene drying process | |
| CN205825587U (en) | A kind of Novel drying device | |
| CN205175001U (en) | Air -flowing type for dry system | |
| CN206399103U (en) | A kind of coal slime drying system | |
| CN106369937B (en) | A kind of coal slime drying system and its drying process | |
| CN102997619A (en) | Nitrogen closed cycle drying method and device for drying polyacrylonitrile | |
| CN107976054A (en) | A kind of hydroresorcinol closed cycle two-stage drying means and drying device | |
| CN102603937A (en) | Flash drying and internal heated fluidized bed drying system and process special for chlorinated polyethylene | |
| CN203940692U (en) | A kind of rotary flash distillation formula biomass powder raw material drying machine | |
| CN205279684U (en) | Energy -conserving lees drying device of sorting formula | |
| CN207563059U (en) | A kind of coal dust preparation system | |
| CN203501702U (en) | Compressed wood chip screen drying machine | |
| CN202576313U (en) | Expansion drying and internal heating fluidized bed drying system special for chlorinated polyethylene | |
| CN205042132U (en) | Novel spray drier | |
| CN208983782U (en) | A kind of tricalcium phosphate drying system | |
| CN110411171A (en) | A kind of stagewise roller biomass dryer | |
| CN108800895B (en) | Protein powder drying system and drying method | |
| CN207662110U (en) | Microwave Pneumatic drying device | |
| CN202709675U (en) | Pneumatic drying system | |
| CN202166290U (en) | Airflow type plant drying machine | |
| CN104880031A (en) | Closed-circulation fluidized-bed equipment with continuous discharge function and method for applying closed-circulation fluidized-bed equipment | |
| CN205747844U (en) | One crushed biomass band drier safely and efficiently | |
| CN204853531U (en) | Dusting of dry process fine sizing and equipment that changes coal ash melting characteristic |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Wang Shujuan Document name: Notification of Passing Examination on Formalities |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071114 Termination date: 20150905 |
|
| EXPY | Termination of patent right or utility model |