CN103644709A - Superheated steam drying device and method - Google Patents
Superheated steam drying device and method Download PDFInfo
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- CN103644709A CN103644709A CN201310725230.XA CN201310725230A CN103644709A CN 103644709 A CN103644709 A CN 103644709A CN 201310725230 A CN201310725230 A CN 201310725230A CN 103644709 A CN103644709 A CN 103644709A
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Abstract
The invention discloses a superheated steam drying device and method and belongs to a drying device and method. The superheated steam drying device comprises an inner heating fluid bed drying machine, a cyclone separator and a circulating fan; the feed opening of the inner heating fluid bed drying machine is connected with a wet material preheater through a sealed feeding screw; one path of the air outlet of the cyclone separator is connected with a washer; the air outlet of the washer is connected with a steam compressor; the steam compressor is connected with an internal heater; the internal heater is connected with the wet material preheater; the washer is provided with a circulating water pump. The drying method is as follows: after dust is removed from waste superheated steam exhausted from the inner heating fluid bed drying machine by the cyclone separator, one path of the steam is pressurized by the circulating fan and then returns to the inner heating fluid bed drying machine, and another path of the steam enters the steam compressor through the washer and then is fed into the internal heater. The invention achieves the characteristic that all the waste superheated steam exhausted from the inner heating fluid bed drying machine is recycled inside a drying system, and heat is not required to be supplied from the outside.
Description
Technical field
The present invention relates to a kind of drying device and method, especially a kind of superheat steam drying device and method.
Background technology
Superheat steam drying system is as a kind of novel dry technology, and the feature such as, environmental protection energy-efficient with it, safety, is obtaining increasingly extensive application.Superheat steam drying system is that a kind of superheated steam that adopts is as the closed loop drying system of drying medium, in dry run, do not have dust and volatile materials to be discharged in atmosphere, because drying medium is superheated steam, there is not oxygen, can get rid of danger and the oxidized problem of material of catching fire, exploding, in addition because drying medium is that solvent evaporates resulting superheated steam, the fixed gas that does not wherein contain or contain minute quantity, the heat that the superheated steam exhaust steam of discharging by recycling drying machine makes to reclaim in dried tail gas becomes easy.
Traditional Vapojet dryer need to adopt the heaters such as hot-blast stove, steam heater from outside for drying system provides heat, a superheated steam exhaust steam part of discharging from drying machine is returned to fluid bed pressurizeing by circulating fan and is recycled the power as goods fluid, and the exhaust steam having more is utilized or discharges by other steam heater after discharging.
The energy-saving effect of superheat steam drying system depends on that can heat entrained in dried tail gas be repeated to utilize.If there is evaporation concentration device in factory, can be by by the superheated steam exhaust steam of extraction, the thermal source as evaporation concentration device is used, realize the recycling of heat, but there is no the steam re-use devices such as evaporation and concentration in many factories, the steam of extracting out is had to discharge, cannot utilize the energy-efficient advantage of superheat steam drying system.As patent ZL200920026493.0 superheated steam brown coal pre-drying device, it is the internal heating fluidized bed drying device of a kind of superheated steam, this device adopts the outside saturated vapor providing sends into fluid bed built-in heat exchanger as thermal source to provide heat for drying system, the superheated steam exhaust steam that the heat that dry materials absorbs is all extracted out from drying system is discharged, for not having evaporation concentration device etc. need to use the production link of steam in the factories such as power plant, colliery, so these steam of discharging from drying system just cannot be recycled.
In sum, mainly there is following shortcoming in current disclosed Superheated Steam Drying Technology:
1, need to adopt the heaters such as hot-blast stove, steam heater from outside for drying system provides heat.
If the superheated steam exhaust steam of 2, discharging can not be recycled by other steam heater, there is no energy saving from drying system.
Summary of the invention
Technical assignment of the present invention is to provide a kind of superheat steam drying device and method for above-mentioned deficiency of the prior art, this a kind of superheat steam drying device and method have by adopting both vapor compression technology, realize superheated steam exhaust steam that internal heating fluidized bed drying machine discharges all in the utilization of drying system inner loop, no longer needed outside that the feature of heat is provided.
A kind of superheat steam drying device: comprise internal heating fluidized bed drying machine, cyclone separator and circulating fan, in described internal heating fluidized bed drying machine, be at least provided with one group of internal heater, the air outlet of described internal heating fluidized bed drying machine is connected with the air inlet of cyclone separator, the air outlet of cyclone separator is connected with circulating fan, the other end of circulating fan is connected with the inlet air plenum of internal heating fluidized bed drying machine, the charging aperture top of described internal heating fluidized bed drying machine is provided with sealing screw feeder, described sealing screw feeder is connected with wet stock preheater, the discharging opening place of described internal heating fluidized bed drying machine is provided with the first rotary discharge valve, the discharging opening of described cyclone separator is provided with the second rotary discharge valve, another road of the air outlet of cyclone separator is connected with washer, the air outlet of described washer is connected with vapour compression machine, described vapour compression machine is connected with the internal heater in internal heating fluidized bed drying machine, described internal heater is connected with wet stock preheater, described washer is provided with water circulating pump, the delivery port of described water circulating pump is connected with the water inlet of washer, water inlet one tunnel of water circulating pump is connected with the delivery port of washer, one tunnel is connected with washings moisturizing pipeline.
Described internal heater is pipe heat exchanger or plate type heat exchanger.
A kind of superheat steam drying method: wet stock is after the preheating of wet stock preheater, through sealing screw feeder, join in internal heating fluidized bed drying machine, material in internal heating fluidized bed drying machine under the effect of circulating fan in fluidized state, internal heater is submerged in the fluidisation bed of material completely, dry materials institute calorific requirement is all provided by internal heater, material is discharged from the first rotary discharge valve as dry finished product after completing in internal heating fluidized bed drying machine and being dried;
The tail gas of discharging from internal heating fluidized bed drying machine is superheated steam, first enter cyclone separator, most of fine granular materials of carrying secretly in tail gas is collected by cyclone separator, as dry finished product, through the second rotary discharge valve of cyclone separator discharging opening, discharges; The tail gas of discharging from cyclone separator, sends into internal heating fluidized bed drying machine after the circulating fan of leading up to pressurization, for the goods fluid in internal heating fluidized bed drying machine provides power; An other road enters washer, in washer, be washed and purify and from washer, discharged and enter vapour compression machine after humidification, by vapour compression machine, added and press to high pressure-temperature saturated vapor, then send into internal heater and be dried needed heat for internal heating fluidized bed drying machine provides wet stock; The saturated vapor of sending into internal heater in internal heater with internal heating fluidized bed drying machine in material be transformed into high pressure-temperature condensed water after completing heat exchange, the condensed water access wet stock preheater of discharging from internal heater, utilize the waste heat of condensed water to carry out preheating to entering internal heating fluidized bed drying machine wet stock before, the cryogenic condensation water of discharging from wet stock preheater is recycled.
A kind of superheat steam drying device of the present invention and method are compared to the prior art, there is following outstanding beneficial effect: the superheated steam exhaust steam that internal heating fluidized bed drying machine is discharged adds through vapour compression machine the saturated vapor that presses to high pressure-temperature, then send into internal heater and provide heat for internal heating fluidized bed dry wet material, realized the entrained heat of dried tail gas all the recycling of drying system inside, energy-efficient; Do not need outside that heat is provided, be particularly suitable for using under the condition that there is no external steam heat supply and can not use hot-blast stove to heat; Adopt washer to carry out purification and washing to entering vapour compression machine superheated steam before, by purification and washing, remove the solid content in tail gas on the one hand, prevent that these solid contents from entering the dynamic balancing that destroys compressor after vapour compression machine, increasing equipment attrition, in addition on the one hand, to enter the superheated steam humidification of washer, be conducive to improve the operating efficiency of vapour compression machine; The present invention is closed-loop system, without any exhaust emissions, and environmentally safe.
Accompanying drawing explanation
Accompanying drawing 1 is a kind of fundamental diagram of superheat steam drying device;
Description of reference numerals: 1, wet stock preheater, 2, sealing screw feeder, 3, internal heating fluidized bed drying machine, 4, internal heater, the 5, first rotary discharge valve, 6, cyclone separator, 7, circulating fan, 8, washer, 9, vapour compression machine, 10, water circulating pump, the 11, second rotary discharge valve.
The specific embodiment
With reference to 1 pair of a kind of superheat steam drying device of the present invention of Figure of description and method, be described in detail below.
A kind of superheat steam drying device of the present invention: comprise internal heating fluidized bed drying machine 3, cyclone separator 6 and circulating fan 7, in described internal heating fluidized bed drying machine 3, be at least provided with one group of internal heater 4, the air outlet of described internal heating fluidized bed drying machine 3 is connected with the air inlet of cyclone separator 6, the air outlet of cyclone separator 6 is connected with circulating fan 7, the other end of circulating fan 7 is connected with the inlet air plenum of internal heating fluidized bed drying machine 3, the charging aperture top of described internal heating fluidized bed drying machine 3 is provided with sealing screw feeder 2, described sealing screw feeder 2 is connected with wet stock preheater 1, the discharging opening place of described internal heating fluidized bed drying machine 3 is provided with the first rotary discharge valve 5, the discharging opening of described cyclone separator 6 is provided with the second rotary discharge valve 11, another road of the air outlet of cyclone separator 6 is connected with washer 8, the air outlet of described washer 8 is connected with vapour compression machine 9, described vapour compression machine 9 is connected with the internal heater 4 in internal heating fluidized bed drying machine 3, described internal heater 4 is connected with wet stock preheater 1, described washer 8 is provided with water circulating pump 7, the delivery port of described water circulating pump 7 is connected with the water inlet of washer 8, water inlet one tunnel of water circulating pump 7 is connected with the delivery port of washer 8, one tunnel is connected with washings moisturizing pipeline.
Described internal heater 4 is pipe heat exchanger or plate type heat exchanger.
The superheated steam exhaust steam of discharging from described internal heating fluidized bed drying machine 3 is after cyclone separator 6 dedustings, lead up to after circulating fan 7 pressurizes and return to internal heating fluidized bed drying machine 3, for the fluidization of internal heating fluidized bed drying machine 3 interior materials provides power, the washer 8 of leading up to is washed and purifies and from washer 8, discharged and enter vapour compression machine 9 after humidification, through vapour compression machine 9, add and press to high pressure-temperature saturated vapor again, then send into internal heater 4 and be dried needed heat for internal heating fluidized bed drying machine 3 provides wet stock.
A kind of superheat steam drying method of the present invention: wet stock is after 1 preheating of wet stock preheater, through sealing screw feeder 2, join in internal heating fluidized bed drying machine 3, material in internal heating fluidized bed drying machine 3 under the effect of circulating fan 7 in fluidized state, internal heater 4 is submerged in the fluidisation bed of material completely, dry materials institute calorific requirement is all provided by internal heater 4, after material completes and is dried in internal heating fluidized bed drying machine 3, as dry finished product, from the first rotary discharge valve 5, discharge;
The tail gas of discharging from internal heating fluidized bed drying machine 3 is superheated steam, first enter cyclone separator 6, most of fine granular materials of carrying secretly in tail gas is collected by cyclone separator 6, as dry finished product, through the second rotary discharge valve 11 of cyclone separator 6 discharging openings, discharges; The tail gas of discharging from cyclone separator 6, leads up to after circulating fan 7 pressurizes and sends into internal heating fluidized bed drying machine 3, for the goods fluid in internal heating fluidized bed drying machine 3 provides power; An other road enters washer 8, in washer 8, be washed purify and by humidification after from washer, discharge and enter vapour compression machine 9, by vapour compression machine 9, added and press to high pressure-temperature saturated vapor, then send into internal heater 4 and be dried needed heat for internal heating fluidized bed drying machine 3 provides wet stock; The saturated vapor of sending into internal heater 4 in internal heater with internal heating fluidized bed drying machine 3 in material be transformed into high pressure-temperature condensed water after completing heat exchange, the condensed water access wet stock preheater 1 of discharging from internal heater 4, utilize the waste heat of condensed water to carry out preheating to entering internal heating fluidized bed drying machine 3 wet stock before, the cryogenic condensation water of discharging from wet stock preheater 1 is recycled.
The present invention is applicable to the large-scale continuous industrial production of the various granular solid materials of applicable fluidized bed drying.
Except the technical characterictic described in description, be the known technology of those skilled in the art.
Claims (3)
1. a superheat steam drying device, comprise internal heating fluidized bed drying machine, cyclone separator and circulating fan, in described internal heating fluidized bed drying machine, be at least provided with one group of internal heater, the air outlet of described internal heating fluidized bed drying machine is connected with the air inlet of cyclone separator, the air outlet of cyclone separator is connected with circulating fan, the other end of circulating fan is connected with the inlet air plenum of internal heating fluidized bed drying machine, it is characterized in that: the charging aperture top of described internal heating fluidized bed drying machine is provided with sealing screw feeder, described sealing screw feeder is connected with wet stock preheater, the discharging opening place of described internal heating fluidized bed drying machine is provided with the first rotary discharge valve, the discharging opening of described cyclone separator is provided with the second rotary discharge valve, another road of the air outlet of cyclone separator is connected with washer, the air outlet of described washer is connected with vapour compression machine, described vapour compression machine is connected with the internal heater in internal heating fluidized bed drying machine, described internal heater is connected with wet stock preheater, described washer is provided with water circulating pump, the delivery port of described water circulating pump is connected with the water inlet of washer, water inlet one tunnel of water circulating pump is connected with the delivery port of washer, one tunnel is connected with washings moisturizing pipeline.
2. a kind of superheat steam drying device according to claim 1, is characterized in that: described internal heater is pipe heat exchanger or plate type heat exchanger.
3. a superheat steam drying method, it is characterized in that: wet stock is after the preheating of wet stock preheater, through sealing screw feeder, join in internal heating fluidized bed drying machine, material in internal heating fluidized bed drying machine under the effect of circulating fan in fluidized state, internal heater is submerged in the fluidisation bed of material completely, dry materials institute calorific requirement is all provided by internal heater, material is discharged from the first rotary discharge valve as dry finished product after completing in internal heating fluidized bed drying machine and being dried;
The tail gas of discharging from internal heating fluidized bed drying machine is superheated steam, first enter cyclone separator, most of fine granular materials of carrying secretly in tail gas is collected by cyclone separator, as dry finished product, through the second rotary discharge valve of cyclone separator discharging opening, discharges; The tail gas of discharging from cyclone separator, sends into internal heating fluidized bed drying machine after the circulating fan of leading up to pressurization, for the goods fluid in internal heating fluidized bed drying machine provides power; An other road enters washer, in washer, be washed and purify and from washer, discharged and enter vapour compression machine after humidification, by vapour compression machine, added and press to high pressure-temperature saturated vapor, then send into internal heater and be dried needed heat for internal heating fluidized bed drying machine provides wet stock; The saturated vapor of sending into internal heater in internal heater with internal heating fluidized bed drying machine in material be transformed into high pressure-temperature condensed water after completing heat exchange, the condensed water access wet stock preheater of discharging from internal heater, utilize the waste heat of condensed water to carry out preheating to entering internal heating fluidized bed drying machine wet stock before, the cryogenic condensation water of discharging from wet stock preheater is recycled.
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104034126A (en) * | 2014-06-20 | 2014-09-10 | 吴宏 | Superheated-steam drying system and process |
| CN104069518A (en) * | 2014-07-16 | 2014-10-01 | 江苏省范群干燥设备厂有限公司 | Technology and system of powder body superheated steam sterilization |
| CN104215038A (en) * | 2014-08-26 | 2014-12-17 | 嘉兴石化有限公司 | Fluidized drying method for PTA (purified terephthalic acid) wet material |
| CN105779071A (en) * | 2016-03-22 | 2016-07-20 | 王定坤 | Dewatering upgrading system and method of high-moisture lignite |
| CN107702378A (en) * | 2017-10-12 | 2018-02-16 | 陈则韶 | The two kinds of application modes and its system of steam heat pump |
| CN108826271A (en) * | 2018-07-05 | 2018-11-16 | 伊婕 | A kind of superheat steam drying device |
| CN109650695A (en) * | 2018-12-25 | 2019-04-19 | 广东闻扬环境科技有限公司 | Sludge drying mechanism and drying method for sludge |
| CN110352327A (en) * | 2017-02-09 | 2019-10-18 | 株式会社爱发科 | Minton dryer and method |
| CN111397346A (en) * | 2020-03-30 | 2020-07-10 | 巨石集团有限公司 | Energy-saving tunnel oven |
| CN111504007A (en) * | 2020-04-29 | 2020-08-07 | 山东德曦环境科技有限公司 | Steam closed-loop pulsating movement combined drying system |
| CN112856933A (en) * | 2019-11-28 | 2021-05-28 | 天华化工机械及自动化研究设计院有限公司 | Horizontal multi-chamber fluidized bed, high-density polyethylene drying system and method |
| CN113332058A (en) * | 2021-06-01 | 2021-09-03 | 广州市利捷医疗设备科技有限公司 | Multifunctional electric sickbed |
| CN114909881A (en) * | 2022-06-16 | 2022-08-16 | 广东韶钢松山股份有限公司 | Ammonium sulfate drying system |
| CN116182541A (en) * | 2023-04-28 | 2023-05-30 | 山东奥诺能源科技股份有限公司 | Heat energy cascade utilization and waste heat recovery device of superheated steam heat source drying system |
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Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104034126A (en) * | 2014-06-20 | 2014-09-10 | 吴宏 | Superheated-steam drying system and process |
| CN104034126B (en) * | 2014-06-20 | 2019-08-02 | 吴宏 | A kind of superheat steam drying system and technique |
| CN104069518A (en) * | 2014-07-16 | 2014-10-01 | 江苏省范群干燥设备厂有限公司 | Technology and system of powder body superheated steam sterilization |
| CN104069518B (en) * | 2014-07-16 | 2017-03-01 | 江苏省范群干燥设备厂有限公司 | A kind of bulk material superheated steam process for sterilizing and system |
| CN104215038A (en) * | 2014-08-26 | 2014-12-17 | 嘉兴石化有限公司 | Fluidized drying method for PTA (purified terephthalic acid) wet material |
| CN105779071A (en) * | 2016-03-22 | 2016-07-20 | 王定坤 | Dewatering upgrading system and method of high-moisture lignite |
| CN110352327B (en) * | 2017-02-09 | 2020-07-14 | 株式会社爱发科 | Vacuum drying apparatus and method |
| CN110352327A (en) * | 2017-02-09 | 2019-10-18 | 株式会社爱发科 | Minton dryer and method |
| CN107702378A (en) * | 2017-10-12 | 2018-02-16 | 陈则韶 | The two kinds of application modes and its system of steam heat pump |
| CN107702378B (en) * | 2017-10-12 | 2020-02-11 | 陈则韶 | Two application modes and system of steam heat pump |
| CN108826271B (en) * | 2018-07-05 | 2019-11-19 | 郭木琴 | A kind of superheat steam drying device |
| CN108826271A (en) * | 2018-07-05 | 2018-11-16 | 伊婕 | A kind of superheat steam drying device |
| CN109650695A (en) * | 2018-12-25 | 2019-04-19 | 广东闻扬环境科技有限公司 | Sludge drying mechanism and drying method for sludge |
| CN112856933A (en) * | 2019-11-28 | 2021-05-28 | 天华化工机械及自动化研究设计院有限公司 | Horizontal multi-chamber fluidized bed, high-density polyethylene drying system and method |
| CN111397346A (en) * | 2020-03-30 | 2020-07-10 | 巨石集团有限公司 | Energy-saving tunnel oven |
| CN111504007A (en) * | 2020-04-29 | 2020-08-07 | 山东德曦环境科技有限公司 | Steam closed-loop pulsating movement combined drying system |
| CN111504007B (en) * | 2020-04-29 | 2021-10-12 | 山东德曦环境科技有限公司 | Steam closed-loop pulsating movement combined drying system |
| CN113332058A (en) * | 2021-06-01 | 2021-09-03 | 广州市利捷医疗设备科技有限公司 | Multifunctional electric sickbed |
| CN114909881A (en) * | 2022-06-16 | 2022-08-16 | 广东韶钢松山股份有限公司 | Ammonium sulfate drying system |
| CN116182541A (en) * | 2023-04-28 | 2023-05-30 | 山东奥诺能源科技股份有限公司 | Heat energy cascade utilization and waste heat recovery device of superheated steam heat source drying system |
| CN116182541B (en) * | 2023-04-28 | 2023-06-27 | 山东奥诺能源科技股份有限公司 | Heat energy cascade utilization and waste heat recovery device of superheated steam heat source drying system |
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Application publication date: 20140319 |