Superheated Steam Dryers - Revision history

PurplePen19 at 02:16, 21 August 2012

2012-08-21T02:16:20Z

← Older revision		Revision as of 20:16, 20 August 2012
Line 18:		Line 18:
	The Superheated dryer is a closed loop pneumatic conveying type. The wet solids are fed into the flow of pressurised superheated transport steam by means of a pressure tight rotary valve, plug screw or similar.		The Superheated dryer is a closed loop pneumatic conveying type. The wet solids are fed into the flow of pressurised superheated transport steam by means of a pressure tight rotary valve, plug screw or similar.

	Indirect heating		===Indirect heating===

	The transport steam is superheated indirectly via a tubular heat exchanger, by a heating media such as medium pressure steam, flue gases or thermal oil. Also, electrical heating can be applied.		The transport steam is superheated indirectly via a tubular heat exchanger, by a heating media such as medium pressure steam, flue gases or thermal oil. Also, electrical heating can be applied.

	Fast drying		===Fast drying===

	In the subsequent drying ducts, moisture is vapourized from the product, forming excess transport steam and lowering its degree of superheat. Normally the residence time in the system is 5-60 seconds only. For some materials a second superheater is necessary to achieve the required dryness.		In the subsequent drying ducts, moisture is vapourized from the product, forming excess transport steam and lowering its degree of superheat. Normally the residence time in the system is 5-60 seconds only. For some materials a second superheater is necessary to achieve the required dryness.

	Energy recovery		===Energy recovery===

	Primary consumption is about 750 kWh/ton evaporated water without any heat recovery. 70-90% of the energy is recoverable by re-using generated steam in another process, for heating purposes, or by using Mechanical Vapour Recompression. With a condensing turbine the generated steam can produce about 200 kWh electricity per ton evaporated water.		Primary consumption is about 750 kWh/ton evaporated water without any heat recovery. 70-90% of the energy is recoverable by re-using generated steam in another process, for heating purposes, or by using Mechanical Vapour Recompression. With a condensing turbine the generated steam can produce about 200 kWh electricity per ton evaporated water.

PurplePen19 at 02:15, 21 August 2012

2012-08-21T02:15:02Z

← Older revision		Revision as of 20:15, 20 August 2012
Line 12:		Line 12:


	===~~Process~~===		==Process==
	Closed loop system
			===Closed loop system===

	The Superheated dryer is a closed loop pneumatic conveying type. The wet solids are fed into the flow of pressurised superheated transport steam by means of a pressure tight rotary valve, plug screw or similar.		The Superheated dryer is a closed loop pneumatic conveying type. The wet solids are fed into the flow of pressurised superheated transport steam by means of a pressure tight rotary valve, plug screw or similar.

PurplePen19: /* Process */

2012-08-20T01:25:25Z

Process

← Older revision		Revision as of 19:25, 19 August 2012
Line 9:		Line 9:

	'''Superheated Steam Drying''' is an environmental and energy saving drying technology.		'''Superheated Steam Drying''' is an environmental and energy saving drying technology.



Line 15:		Line 16:

	The Superheated dryer is a closed loop pneumatic conveying type. The wet solids are fed into the flow of pressurised superheated transport steam by means of a pressure tight rotary valve, plug screw or similar.		The Superheated dryer is a closed loop pneumatic conveying type. The wet solids are fed into the flow of pressurised superheated transport steam by means of a pressure tight rotary valve, plug screw or similar.


	Indirect heating		Indirect heating

	The transport steam is superheated indirectly via a tubular heat exchanger, by a heating media such as medium pressure steam, flue gases or thermal oil. Also, electrical heating can be applied.		The transport steam is superheated indirectly via a tubular heat exchanger, by a heating media such as medium pressure steam, flue gases or thermal oil. Also, electrical heating can be applied.


	Fast drying		Fast drying

	In the subsequent drying ducts, moisture is vapourized from the product, forming excess transport steam and lowering its degree of superheat. Normally the residence time in the system is 5-60 seconds only. For some materials a second superheater is necessary to achieve the required dryness.		In the subsequent drying ducts, moisture is vapourized from the product, forming excess transport steam and lowering its degree of superheat. Normally the residence time in the system is 5-60 seconds only. For some materials a second superheater is necessary to achieve the required dryness.


	Energy recovery		Energy recovery

	Primary consumption is about 750 kWh/ton evaporated water without any heat recovery. 70-90% of the energy is recoverable by re-using generated steam in another process, for heating purposes, or by using Mechanical Vapour Recompression. With a condensing turbine the generated steam can produce about 200 kWh electricity per ton evaporated water.		Primary consumption is about 750 kWh/ton evaporated water without any heat recovery. 70-90% of the energy is recoverable by re-using generated steam in another process, for heating purposes, or by using Mechanical Vapour Recompression. With a condensing turbine the generated steam can produce about 200 kWh electricity per ton evaporated water.

PurplePen19 at 01:17, 20 August 2012

2012-08-20T01:17:38Z

← Older revision		Revision as of 19:17, 19 August 2012
Line 11:		Line 11:


	===~~Superheated steam drying process~~===		===Process===
	Closed loop system		Closed loop system

PurplePen19 at 01:17, 20 August 2012

2012-08-20T01:17:06Z

← Older revision		Revision as of 19:17, 19 August 2012
Line 5:		Line 5:
	* Please start editing this page after the /noinclude		* Please start editing this page after the /noinclude
	* -------------------------------------------------></noinclude>		* -------------------------------------------------></noinclude>

	[[File:Superheated Steam Drying.jpg\|thumb\|200px\|right\|Superheated Steam Drying]]		[[File:Superheated Steam Drying.jpg\|thumb\|200px\|right\|Superheated Steam Drying]]

Line 12:		Line 11:



	===Superheated steam drying process===		===Superheated steam drying process===
	Closed loop system		Closed loop system

PurplePen19 at 01:13, 20 August 2012

2012-08-20T01:13:56Z

← Older revision		Revision as of 19:13, 19 August 2012
Line 9:		Line 9:


	'''Superheated Steam Drying''' is an environmental and energy saving drying technology		'''Superheated Steam Drying''' is an environmental and energy saving drying technology.



	===Superheated steam drying process===		===Superheated steam drying process===

PurplePen19 at 01:13, 20 August 2012

2012-08-20T01:13:33Z

← Older revision		Revision as of 19:13, 19 August 2012
Line 12:		Line 12:

	===Superheated steam drying process===		===Superheated steam drying process===

	Closed loop system		Closed loop system

PurplePen19 at 04:29, 19 August 2012

2012-08-19T04:29:43Z

@@ Line 5: / Line 5: @@
 * Please start editing this page after the /noinclude
 * -------------------------------------------------></noinclude>
-This page is still empty. If you know something about this product, please share your knowledge with others.

Admin: Created page with "Category:Drying{{Knoppen}}