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槳葉干燥機/處理器是高效機械攪拌,間接傳熱設(shè)備,添加或刪除熱量的過程質(zhì)量。他們用于干燥,加熱,冷卻,巴氏滅菌法,結(jié)晶,和糊劑,蛋糕,粉劑,和粒劑的反應(yīng)...
Komline-Sanderson槳葉干燥機/處理器是高效機械攪拌,間接傳熱設(shè)備,添加或刪除熱量的過程質(zhì)量。他們用于干燥,加熱,冷卻,巴氏滅菌法,結(jié)晶,和糊劑,蛋糕,粉劑,和粒劑的反應(yīng)。
具有獨特的嚙合楔形狀槳雙反旋轉(zhuǎn)軸產(chǎn)生均勻混合,優(yōu)化傳熱。使用空心槳葉傳熱結(jié)果,在一個緊湊的機器。的傳熱介質(zhì):蒸汽,油,熱流體,水,或乙二醇中分離從過程的質(zhì)量。
Komline-Sanderson提供蒸氣緊的揮發(fā)性有機化合物(VOCs)或其它有害物質(zhì)的應(yīng)用程序的設(shè)計。溫度敏感的材料,可以在低的溫度下在真空下干燥。
應(yīng)用
烘干
KS槳葉干燥機間接加熱用蒸汽或熱流體(熱油)。這提供了高能源效率和低廢氣量。^多到750°F的傳熱介質(zhì)都可以使用。可以采用熱吹掃氣,以防止冷凝的蒸氣空間或干燥機的下游。
干燥到低含水量或10ppm或更低的殘留溶劑水平,需要均勻地加熱和停留時間。 KS槳葉干燥機可讓您達到這些目標的一個持續(xù)的過程。
KS槳葉干燥機干燥漿料提供了一個可靠和有效的方法,濾餅和離心濃縮。真空的設(shè)計可以在減壓下除去水或有機溶劑。
暖氣
加熱熔化,烹飪,殺菌,烘焙或反應(yīng)過程質(zhì)量。加熱介質(zhì)可以是蒸汽,熱油或熱水。兩區(qū)的設(shè)計允許兩個不同的溫度區(qū)。
冷卻
移除熱量從用冷水或熱流體(丙二醇,下降至-40°F)的處理質(zhì)量。冷卻,可以在受控的不含水分的環(huán)境。兩區(qū)的設(shè)計允許兩個不同的溫度區(qū)。
煅燒
熱油可用于煅燒在溫度高達700°F。高溫煅燒前的水蒸發(fā),將增加的高溫設(shè)備的能力,以及該過程的熱效率。
反應(yīng)
^的溫度和停留時間的控制允許對KS槳葉處理器被用于催化和控制反應(yīng)。它可用于放熱和吸熱反應(yīng)。高程度的混合,允許多個成分充分混合作為反應(yīng)過程的一部分。
結(jié)晶
選擇性聚合物結(jié)晶或結(jié)晶在控制的速率和溫度,可以實現(xiàn)使用的KS槳葉處理器。
加工的材料包括:
化學(xué)方法:鹽,催化劑,溴化有機物,纖維素,淀粉
石油化工:固體devolatization
聚合物和塑料:聚丙烯,聚碳酸酯,聚苯硫醚,PET,PTA
面粉食品,飲料粉,糖果配料,肉類產(chǎn)品
礦物和金屬:金屬粉末,金屬碳酸鹽,硫酸鹽和氫氧化物
優(yōu)點
熱效率高。
傳熱介質(zhì)不接觸的產(chǎn)品。
氣體不被用于傳達產(chǎn)品。截斷氣體流量是^小的。
^的溫度控制
統(tǒng)一的產(chǎn)品質(zhì)量,通過混合和運動的產(chǎn)品
一次通過的基礎(chǔ)上持續(xù)的過程
高傳熱面積,處理體積比 - 建筑面積減少
預(yù)調(diào)節(jié)與循環(huán)的通常不是必需的。
操作簡單,需要很少的注意
安全比直接干燥處理易燃材料時,
簡單耐用的設(shè)計簡單,維護成本低
封閉過程中包含的氣味和有害物質(zhì)
設(shè)計
傳熱面積從20到超過3300平方米英尺(5.6到305平方米)的每機
加熱用蒸汽或熱流體(熱油)
冷卻水或水 - 乙二醇混合物
用于雙溫區(qū)設(shè)計獨特的應(yīng)用
設(shè)計,建造,并加蓋按照ASME規(guī)范或PED
可調(diào)工作水平的提高過程的靈活性(回合)
碳鋼,不銹鋼或合金的過程中的接觸面
表面光潔度滿足工藝要求(從磨電拋光)
耐磨涂料在選定的地區(qū)
在操作過程中的惰性過程
堅固耐用的設(shè)計,專為高扭矩,低運行速度
軸,帶座軸承,傳動部件,壽命長,是專為在惡劣的條件下,確保長期的機械完整性
Komline-Sanderson槳葉干燥機/處理器是一種高效,機械攪拌,間接傳熱設(shè)備熱添加或刪除一個過程質(zhì)量。雙計數(shù)器具有獨特的相互嚙合的楔形槳葉的旋轉(zhuǎn)軸產(chǎn)生緊密的混合,均勻傳熱,高傳熱率,和一個自清潔效果。無定子線棒(斷路器條)是必要的。
一個大的傳熱面積與體積之比來實現(xiàn)所使用的空心槳葉和一個帶夾套的容器中,通過該加熱介質(zhì)的流動。其結(jié)果是一個緊湊的機器,用更少的空間要求和降低了安裝成本。
的金屬壁分離的過程的質(zhì)量,從傳熱介質(zhì)。得到的,因為是通過傳導(dǎo)傳熱,熱效率高。失去的熱量很少用絕緣機。
KS槳干燥器輸送材料,無論其處理特性。粘性,膏狀物料運輸。預(yù)調(diào)節(jié)的飼料混合,與回收的干燥產(chǎn)物,以使它能傳輸,不是必需的。這將導(dǎo)致較低的資本,運營和維護成本。
材料是通過KS槳葉干燥機輸送排量(“活塞流”)。作為材料被添加到進料端,它被同化進入床層,通過攪拌器的混合作用。水頭壓力,結(jié)合的楔形槳葉與行動,推壓材料的周圍,并通過槳葉。由于該產(chǎn)品通過位移移動,停留時間被控制的進給速率和溢流堰的高度。
KS槳葉干燥機的設(shè)計與高扭矩能力,以增加其過程的靈活性。額外的扭矩讓你上線,在異常條件下的發(fā)展。
由于KS槳烘干機是間接加熱的排出氣體的量是^小的。通常情況下,沒有外部的吹掃氣體是必需的。對于某些應(yīng)用吹掃氣體被用于增加的干燥速率,或以防止冷凝的冷卻器或蒸汽出口的干燥器。伴熱蓋也可以做,以避免結(jié)露現(xiàn)象發(fā)生。
系統(tǒng)
KS過程和項目工程師在項目的所有階段提供援助。 KS可以根據(jù)您的具體要求,為您提供一個機/處理器,或一個完整的系統(tǒng)。
一個成功的工廠取決于選擇合適的輔助設(shè)備和合適的設(shè)備設(shè)計與整合的關(guān)鍵工序單位。可靠性,操作方便,堅固的結(jié)構(gòu),性能和卓越的客戶服務(wù)的KS安裝所有的商標。
一個典型的系統(tǒng)包括一個進料計量裝置,如一個可變速度的輸送機或泵。進料計量是過程控制的重要組成部分。
在大多數(shù)應(yīng)用中的截斷氣體的量是非常低的,在低的溫度下。當(dāng)使用吹掃氣體,堪薩斯掃描空調(diào)可以集成到系統(tǒng)中。
安全功能必須是系統(tǒng)設(shè)計的一部分。 KS槳烘干機用一種惰性的低溫度環(huán)境操作。空氣不被用于傳達一種在干燥機中的熱產(chǎn)物。截斷氣體被冷凝揮發(fā)物后,可以回收。
必要時,爆炸抑制系統(tǒng)或爆燃通風(fēng)板納入干燥器的蓋。惰用氮氣的過程,也可以完成與一個^小吹掃速率。
蒸氣緊縮的設(shè)計允許的處理的材料含有有機溶劑和安全的方式在一個封閉的有害材料。熱敏感的材料也可以用在低的溫度下在真空下使用熱水作為加熱介質(zhì)。
常見問題
K-S槳葉干燥機的效率如何?
一種間接加熱,以及絕緣,槳機/處理器具有一個約98%的熱效率。
干燥需要多少能量?
為KS槳烘干機所需的能量的量是依賴于初始水分和的^終濕度以及飼料和放電的溫度。
例如:本機需要1155 BTU每磅水去除干燥的材料從20%90%DS DS。這是在干燥器“熱負荷”。要計算燃油成本,失去了在鍋爐或熱流體加熱器,線失去了你需要的因素。例如,蒸汽鍋爐一般是80%的效率,而熱流體加熱器的效率范圍為83%?87%取決于設(shè)計。
機/處理器大小如何?
每小時的進給速率被建立,和從該總熱負荷(Q)被確定。的加熱/冷卻介質(zhì)的溫度建立對數(shù)平均溫度差(驅(qū)動力,LMTD)。的傳熱系數(shù)(U)是依賴于被加工的材料。這是通過使用從以前的經(jīng)驗和測試數(shù)據(jù)的數(shù)據(jù)建立。在這些價值觀的建立了傳熱面積(A)的計算方法是:
A = Q /(U X LMTD)
什么樣的蒸汽壓力是必需的?熱流體溫度,該怎么辦?
對于大多數(shù)材料的干燥,加熱介質(zhì)的溫度為380?400°F的使用。對于熱敏感材料,使用低得多的溫度下。對于干燥的惰性材料高得多的可用于加熱介質(zhì)的溫度(高達750°F)。
K-S提供實驗室和中試嗎?
是的,KS可以在我們的技術(shù)中心或在您的工廠提供試驗性測試。在我們的測試計劃是在“參考文獻”提供的信息。
The Komline-Sanderson Paddle Dryer / Processor are highly efficient, mechanically agitated, indirect heat transfer devices that add or remove heat from a process mass. They are used for drying, heating, cooling, pasteurization, crystallizing, and reacting of pastes, cakes, powders, and granules.
Dual counter-rotating shafts with unique intermeshing wedge shape paddles produce intimate mixing and optimize heat transfer. The use of hollow paddles for heat transfer results in a compact machine. The heat transfer medium: steam, oil, thermal fluid, water, or glycol is isolated from the process mass.
Komline-Sanderson offers vapor tight designs for applications with volatile organic compounds (VOCs) or hazardous materials. Temperature sensitive materials can be dried at low temperatures under vacuum.
Applications
Drying
The K-S Paddle Dryer is indirectly heated with steam or thermal fluid (hot oil). This provides for high energy efficiencies and low off-gas volumes. Heat transfer mediums of up to 750 °F can be used. Hot sweep gas can be employed to prevent condensation in the vapor space or downstream of the dryer.
Drying to low moistures or residual solvents levels of 10 ppm or lower requires uniform heating and residence time. The K-S Paddle Dryer allows you to reach these objectives with a continuous process.
The K-S Paddle Dryer provides a reliable and efficient method for drying slurry, filter cakes and centrifuge concentrates. Vacuum designs can remove water or organic solvents at reduced temperatures.
Heating
Heating a process mass for melting, cooking, pasteurization, roasting or reacting. The heating medium can be steam, hot oil, or hot water. Two- zone design allows for two distinct temperature zones.
Cooling
Remove heat from a process mass with cold water or thermal fluid (glycol, down to -40 °F). Cooling can be done in a controlled moisture-free environment. Two- zone design allows for two distinct temperature zones.
Calcining
Hot oil can be used for calcining at temperatures up to 700 °F. Evaporation of water prior to high temperature calcining will increase the capacity of the high temperature equipment, and the thermal efficiency of the process.
Reacting
Precise temperature and residence time control allows the K-S Paddle Processor to be used for catalyzing and controlling reactions. It can be used for both exothermic and endothermic reactions. A high degree of mixing allows multiple ingredients to be thoroughly mixed as part of the reacting process.
Crystallizing
Selective polymer crystallization or crystallizing at controlled rates and temperature can be achieved by using the K-S Paddle Processor.
Materials processed include:
Chemical: salts, catalyst, brominated organics, cellulose, starch
Petrochemical: solids devolatization
Polymer and plastic: polypropylene, polycarbonate, polyphenylsulfide, PET, PTA
Food: flour, beverage powders, confectionary ingredients, meat products
Mineral and metal: metal powders, metal carbonates, sulfates and hydroxides
Benefits
High thermal efficiency
Heat transfer medium does not contact the product.
Gas is not used to convey the product. Off-gas flow is minimal.
Precise control of temperature
Uniform product quality, through mixing and movement of the product
Continuous process on a once-through basis
High heat transfer area to process volume ratio - reduced floor space
Pre-conditioning with recycle is typically not required.
Easy to operate, requires minimal attention
Safer than direct drying when processing combustible material
Simple durable design for easy and low maintenance
Enclosed process contains odors and hazardous materials
Design
Heat transfer areas from 20 to over 3300 square feet (5.6 to over 305 square metres) per dryer
Heated with steam or thermal fluid (hot oil)
Cooled with water or water-glycol mixtures
Two temperature-zone design used for unique applications
Designed, constructed, and stamped per ASME Code or PED
Adjustable operating level increases process flexibility (turn-down)
Process contact surfaces of carbon steel, stainless steel or alloy
Surface finishes to meet process requirements (from mill to electro-polished)
Available with abrasion-resistant coatings on selected areas
Inert process during operation
Robust design, designed for high torque and low operating speed
Shafts, pillow block bearings, and drive components are designed for long life under adverse conditions, insuring long-term mechanical integrity
The Komline-Sanderson Paddle Dryer / Processor are a highly efficient, mechanically agitated, indirect heat transfer devices for adding or removing heat from a process mass. Dual counter-rotating shafts with unique intermeshing wedge-shaped paddles produce intimate mixing, uniform heat transfer, a high heat transfer rate, and a self-cleaning effect. No stator bars (breaker bars) are needed.
A large heat transfer area to volume ratio is achieved by the use of hollow paddles and a jacketed vessel, through which the heating medium flows. The result is a compact machine with less space requirements and lower installation cost.
A metal wall separates the process mass from the heat transfer medium. High thermal efficiency is obtained because the heat transfer is by conduction. Very little heat is lost with an insulated dryer.
The K-S Paddle Dryer transports material, regardless of its handling characteristics. Sticky, pasty materials can be transported. Pre-conditioning the feed by mixing with recycled dried product, to make it conveyable, is not required. This results in lower capital, operating, and maintenance cost.
Material is conveyed through the K-S Paddle Dryer by displacement (“piston flow”). As material is added to the feed end, it is assimilated into the bed by the mixing action of the agitators. Hydraulic head pressure, combined with the action of the wedge-shaped paddles, pushes material around and through the paddles. Since the product moves by displacement, residence time is controlled by the feed rate and the overflow weir height.
The K-S Paddle Dryer is designed with high torque capabilities to increase its process flexibility. Extra torque keeps you on-line, when upset conditions develop.
Because the K-S Paddle Dryer is indirectly heated the amount of off-gas is minimal. Typically no external sweep gas is required. For certain applications sweep gas is used to increase the drying rate or to prevent condensation in a cooler or the vapor outlet of a dryer. Heat tracing the cover can also be done to prevent condensation from occurring.
System
K-S process and project engineers provide assistance at all phases of the project. Depending on your specific requirements, K-S can provide you with a dryer/processor, or a complete system.
A successful plant depends on the integration of the key process units with properly selected ancillary equipment and the right facility design. Reliability, ease of operation, rugged construction, performance, and the superior customer service are all trademarks of a K-S installation.
A typical system includes a feed metering device such as a variable speed conveyor or pump. Feed metering is an important part of process control.
In most applications the off-gas volume is very low and at a low temperature. When sweep gas is used, K-S can integrate sweep air conditioning into the system.
Safety features must be part of the system design. The K-S Paddle Dryer operates with an inert low temperature environment. Air is not used to convey a hot product in the dryer. Off-gas can be recycled after volatiles are condensed.
When necessary, explosion suppression systems or deflagration vent panels are incorporated into the dryer’s cover. Inerting of the process with nitrogen can also be accomplished with a minimal purge rate.
Our vapor tight design allows for the processing of material containing organic solvents and hazardous materials in an enclosed safe manner. Heat sensitive materials can also be dried at low temperatures under vacuum using hot water as the heating medium.
FAQs
How efficient is the K-S Paddle Dryer?
An indirectly heated, well insulated, Paddle Dryer / Processor has a thermal efficiency of approximately 98%.
How much energy is needed for drying?
The amount of energy required for the K-S Paddle Dryer is dependent on the initial moisture and the final moisture as well as the feed and discharge temperatures.
Example: Our dryer needs 1155 BTU per pound of water removed to dry material from 20% ds to 90% ds. This is the “heat load” at the dryer. To calculate the fuel cost, you need to factor in loses at the boiler or thermal fluid heater and line loses. For example, a steam boiler is typically 80% efficient while a thermal fluid heater’s efficiency ranges from 83% to 87% depending on design.
How is the dryer/processor sized?
The hourly feed rate is established and from this the total heat load (Q) is determined. The heating/cooling medium temperature establishes the log mean temperature differential (driving force, LMTD). The heat transfer coefficient (U) is dependent on the material being processed. This is established by using data from prior experience and test data. With these values established the heat transfer area (A) is calculated by:
A = Q/(U x LMTD)
What steam pressure is required? What thermal fluid temperature is used?
For drying of most materials, a heating medium temperature of 380 to 400 °F is used. For heat sensitive materials, much lower temperatures are used. For drying of inert materials much higher heating medium temperatures can be used (up to 750 °F).
Does K-S offer lab and pilot test?
Yes, K-S can provide pilot testing at our Technical Center or at your plant. Information on our test programs is provided in “References”.
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