CN1114827A - 熔体固化设备排出的废气之净化方法和装置 - Google Patents
熔体固化设备排出的废气之净化方法和装置 Download PDFInfo
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Abstract
已知的净化废气的方法和装置用排气罩把产品放出的蒸汽和产生的粉尘抽走并清除掉。本发明提出使熔体蒸汽压力和要凝固的熔体连续通过空间时的饱和压力之间的压差保持尽可能小,以使从产品产生的蒸汽量尽可能少。这样就可减少要清除的粉尘量。本发明特别适用于硫的制丸装置。
Description
本发明涉及熔体固化设备中排出的废气之净化的一种方法和装置。熔体被加到冷却面特别是带式冷却机上并在那里凝固。
欧洲专利EP0012192B1曾提出了这种方法和装置。在实际中所使用的这种装置是用来抽走由熔体放出的蒸汽,例如硫蒸汽。整个装置用一个排气罩罩住,排气罩抽走产生的废气并通过附加的通常是相当昂贵的过滤器进行净化。这种净化方法的缺点是,随废气一起抽走的相当可观的粉尘量对生产产品是一种损失。
本发明的任务在于提出上述类型的一种方法和装置,从一开始就只产生较少的粉尘。
本发明方法是这样完成这个任务的:加到冷却面上后的熔体之蒸汽压力和要固化的熔体连续通过的空间内的饱和压力之间的压差以及熔体放出的蒸汽的流速都尽可能地保持很小。
通过这一措施,与蒸汽压差成比例的作为粉尘产生的分离量从一开始就可保持很小。如使蒸汽的流速(分离量与它也成比例关系)也保持很小,则可大大地阻止粉尘产生,这样,在很大程度上就可省去昂贵的和附加的废气净化设备。在改进的本发明方法中,通过对熔体连续通过的空间进行加热,饱和压力就能按简单的方式跟踪要冷却熔体的蒸汽压力。通过这一措施,特别是对易于结晶的材料例如硫,就可以把产品的有效压力尽可能均衡到接近于与温度有关的饱和压力。这样,要结晶的产品量变少,从而粉尘量减少并降低净化费用。
本发明的方法可用一种特别简单的装置实施,这种装置由一个熔体喂给装置和一台在其下方循环运转的带式冷却机组成。在带式冷却机上的熔体向集料箱运送时,熔体凝固。喂给装置和带式冷却机用一个带有加热装置的排气罩罩住,加热装置可以控制,使得排气罩下方沿带式冷却机运行方向的温度是可变化的。排气罩可尽量靠近带式冷却机布置,以便形成的蒸汽室尽可能小并降低上升蒸汽的流速。在带式冷却机和排气罩之间的入口和出口处最好用密封材料进行密封,以使漏气量尽可能小并避免产生粉尘。在一个特别简单的实施例中,排气罩可由基本上与带式冷却机平行布置的装有可控加热元件的双层钢板作成。
下面结合附图所示的实施例来说明本发明。
唯一一幅附图示意表示用一台带式冷却机的熔体制丸装置图,在这个简化表示的装置下方的曲线图表示加在带式冷却机上的熔体的蒸汽压力随冷却距离的变化曲线图。
从图中可以看出,在用钢带构成的绕转向滚筒(1和2)沿箭头(4)方向循环运转的带式冷却机(3)的上方布置了一台转动成型机(5),它由在图中没有详细表示的两根同轴布置的管子组成,其中外管带有许多出孔,而内管则带有一个面向带式冷却机(3)的上段(3a)的槽。产品从正面在加热和熔化状态下输入转动成型机(5)并基于两管的相对运动而成滴状向下流出,成滴的熔体状如丸粒(6)并在带式冷却机(3)的上段(3a)上在一段很远的距离内凝固成固体的丸状颗粒。为此,带式冷却机(3)有一个在图中没有表示出的例如可由喷嘴组成的冷却装置,以便从下对着带式冷却机(3)的上段(3a)进行喷射,从而实现必要的冷却散热而使丸粒(6)冷却。
已凝固的丸粒从带式冷却机的转向滚筒(2)的范围内掉落并用集丸箱(7)收集后进一步处理。整个带式冷却机(3)和转动成型机(5)都用一个排气罩(8)罩住。排气罩(8)有一个废气排出口(9)通向图中没有表示出的净化过滤器。如用图示的装置从熔体例如硫(其蒸汽对环境有害)制造丸粒,则必须抽走废气并进行净化。
为了防止带式冷却机(3)上的产品喂给处即转动成型机(5)的范围内和在进一步冷却时,起初仍是热的产品在较远距离上进一步冷却时产生的蒸汽产生粉尘以及为了避免清除粉尘,在这一实施例中,转动成型机(5)和与它连接的带式冷却机(3)的上段(3a)用一个附加的排气罩(10)罩上。排气罩(10)主要由一块尽可能靠近上段(3a)平行布置的双层钢板组成(除了转动成型机(5)区域之外),并在这个排气罩的整个长度上分布有可逐个控制的加热元件(11)。在排气罩(10)和带式冷却机(3)之间的进口(12)和出口(13)用密封材料密封,以使排气罩(10)下方的内腔(14)向外尽可能好地密封。为此,在出口(13)上设置一个窄槽,此槽的大小正好能使丸粒(6)从排气罩(10)的内腔(14)流出。
图示装置的下方有一个输入转动成型机(5)的熔体例如硫的蒸汽压力(P)变化曲线。从这曲线图中可以看出,在喂给处即熔液温度最高处,蒸汽压力最大并随冷却距离(S)而逐渐减小。
本发明提出通过加热元件(11)的可控加热使排气罩(10)内腔(14)的温度跟踪蒸汽压力曲线(15),亦即内腔(14)的温度在转动成型机(5)的范围内最高,而在出口槽(13)的范围内最低。通过这一措施即可这样影响与温度有关的饱和压力,即饱和压力在很大程度上可跟踪蒸汽压力曲线(15)。这意味着,用蒸汽压力曲线(15)表示的产品(丸粒(6))的蒸汽压力和用排气罩(10)内的加热调控的在图中用虚线表示的饱和压力(16)之间的压差保持很小。所以,在选定的冷却距离上,产品即丸粒(6)几乎不向外排放在冷却后产生粉尘的蒸汽,因而从排气罩(8)的排气口(9)排出的粉尘量也比已知的装置少得多,所以,净化装置的结构亦可相应简单一些。
从图中清楚看出,排气罩(10)下方的内腔(14)很小,所以,在内腔中几乎没有给产品(6)上升的蒸汽提供空间。因此这种蒸汽的流速也很小。由于分离量除了与压差有关外还与流速有关,所以,这一措施产生的结果是,需要排出的产品粉尘很少。
Claims (7)
1.熔体固化设备中排出的废气之净化方法,其中,熔体被加到冷却面特别是带式冷却机上并在那里凝固,其特征是,加到冷却面以后的熔体蒸汽压力(15)和要凝固的熔体连续通过内腔的饱和压力(16)之间的压差保持尽可能的小。
2.根据权利要求1所述的方法,其特征是,由熔体放出的蒸汽的流速也保持尽可能的小。
3.根据权利要求1所述的方法,其特征是,熔体连续通过内腔(14)的饱和压力(16)通过加热可跟踪要冷却熔体的蒸汽压力(15)。
4.实施如权利要求1、2或3所述方法的装置,包括熔体的一个喂给装置(5)和一台在下方不断运转的带式冷却机(3),熔体在带式冷却机(3)上固化并运送到集丸箱(7),其特征是,喂给装置(5)和带式冷却机(3)用一个带有加热装置(11)的排气罩(10)罩住,加热装置(11)可以控制排气罩(10)下方内腔(11)内沿带式冷却机(3)运行方向的温度变化。
5.根据权利要求4所述的装置,其特征是,排气罩(10)尽可能靠近带式冷却机(3)布置。
6.根据权利要求5所述的装置,其特征是,在带式冷却机(3)和排气罩(10)之间的进口(12)和出口(13)上装有密封材料,以便保持尽可能小的漏气率。
7.根据权利要求5所述的装置,其特征是,排气罩(10)主要由与带式冷却机(3)的上段(3a)平行布置的装有可控加热元件(11)的双层钢板作成。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE4332686A DE4332686C1 (de) | 1993-09-25 | 1993-09-25 | Verfahren und Vorrichtung zur Reinigung der Abluft von Anlagen zur Verfestigung von Schmelzen |
DEP4332686.2 | 1993-09-25 |
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CN1114827A true CN1114827A (zh) | 1996-01-10 |
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CN94190718A Pending CN1114827A (zh) | 1993-09-25 | 1994-08-05 | 熔体固化设备排出的废气之净化方法和装置 |
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Country | Link |
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US (1) | US5558821A (zh) |
EP (1) | EP0670754A1 (zh) |
JP (1) | JPH08503889A (zh) |
KR (1) | KR950704038A (zh) |
CN (1) | CN1114827A (zh) |
AU (1) | AU678518B2 (zh) |
CA (1) | CA2148275A1 (zh) |
DE (1) | DE4332686C1 (zh) |
RU (1) | RU2106191C1 (zh) |
WO (1) | WO1995008390A1 (zh) |
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US7147168B1 (en) * | 2003-08-11 | 2006-12-12 | Halton Company | Zone control of space conditioning system with varied uses |
DE102004009709B4 (de) * | 2004-02-27 | 2009-06-25 | Cognis Ip Management Gmbh | Verfahren zum Pastillieren von schmelzbarem Produkt |
US20080274683A1 (en) | 2007-05-04 | 2008-11-06 | Current Energy Controls, Lp | Autonomous Ventilation System |
US20090061752A1 (en) | 2007-08-28 | 2009-03-05 | Current Energy Controls, Lp | Autonomous Ventilation System |
US7638076B2 (en) * | 2007-10-26 | 2009-12-29 | Martin Resource Management Corporation | Method and system for pelletizing sulfur |
BRPI0917043B1 (pt) | 2008-12-03 | 2019-11-26 | Oy Halton Group Ltd | método para controlar o fluxo de ar de exaustão em um sistema de ventilação de exaustão, e sistema de ventilação de exaustão |
DE102010007391A1 (de) * | 2010-02-02 | 2011-08-04 | Sandvik Materials Technology Deutschland GmbH, 40549 | Verfahren zur Bandkonditionierung bei Pastillieranlagen und Vorrichtung zum Herstellen von Pastillen |
US8329072B2 (en) | 2010-11-24 | 2012-12-11 | Brimrock International Inc. | Method and system for generating sulfur seeds and granules |
EP2883526B1 (de) * | 2013-12-11 | 2020-03-18 | Harro Höfliger Verpackungsmaschinen GmbH | Verarbeitungssystem für Pulver und Verfahren zur Verarbeitung von Pulver |
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US3473740A (en) * | 1967-06-19 | 1969-10-21 | Monsanto Co | Granulation of fine particles |
DE3124200C2 (de) * | 1981-06-19 | 1986-03-27 | Santrade Ltd., Luzern/Lucerne | Verfahren zur Herstellung von Schwefel in Granulatform |
FR2590498B1 (fr) * | 1985-11-22 | 1993-04-09 | Raffineries Soufre Reunies | Procede pour produire en continu du soufre sous forme de particules solides sensiblement spheriques, individuelles et/ou agglomerees |
US5295799A (en) * | 1989-02-13 | 1994-03-22 | Diversey Corporation | Pellet forming apparatus |
DE4013405C2 (de) * | 1990-04-26 | 1995-08-31 | Kaiser Geb | Vorrichtung zur Erzeugung von Granalien oder Pastillen aus fließfähigem Material |
ATE92365T1 (de) * | 1990-09-20 | 1993-08-15 | Berndorf Band Gmbh | Vorrichtung zur portionierten abgabe von fliessfaehigen massen. |
US5286181A (en) * | 1991-04-26 | 1994-02-15 | Berndorf Belt Systems, Inc. | Extrusion apparatus having a nozzle-headed drum |
DE4322628C1 (de) * | 1993-07-07 | 1994-11-03 | Santrade Ltd | Verfahren und Vorrichtung zur Reinigung der Abluft aus Anlagen zur Verfestigung von Schmelzen |
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1993
- 1993-09-25 DE DE4332686A patent/DE4332686C1/de not_active Expired - Fee Related
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1994
- 1994-08-05 KR KR1019950701979A patent/KR950704038A/ko not_active Application Discontinuation
- 1994-08-05 CA CA002148275A patent/CA2148275A1/en not_active Abandoned
- 1994-08-05 JP JP7509518A patent/JPH08503889A/ja active Pending
- 1994-08-05 RU RU95112838A patent/RU2106191C1/ru active
- 1994-08-05 WO PCT/EP1994/002610 patent/WO1995008390A1/de not_active Application Discontinuation
- 1994-08-05 AU AU74982/94A patent/AU678518B2/en not_active Expired - Fee Related
- 1994-08-05 CN CN94190718A patent/CN1114827A/zh active Pending
- 1994-08-05 US US08/436,461 patent/US5558821A/en not_active Expired - Lifetime
- 1994-08-05 EP EP94924851A patent/EP0670754A1/de not_active Withdrawn
Also Published As
Publication number | Publication date |
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WO1995008390A1 (de) | 1995-03-30 |
US5558821A (en) | 1996-09-24 |
DE4332686C1 (de) | 1995-02-09 |
AU678518B2 (en) | 1997-05-29 |
KR950704038A (ko) | 1995-11-17 |
EP0670754A1 (de) | 1995-09-13 |
RU2106191C1 (ru) | 1998-03-10 |
CA2148275A1 (en) | 1995-03-30 |
RU95112838A (ru) | 1996-12-27 |
AU7498294A (en) | 1995-04-10 |
JPH08503889A (ja) | 1996-04-30 |
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