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Nitrogen closed cycle drying and solvent recovery system

A closed-circuit circulation and recovery system technology, applied in the direction of drying solid materials, drying gas arrangement, heating to dry solid materials, etc., can solve the problem of limited solvent collection, etc., and achieve environmental protection, stable air pressure, and good fluidized drying effect Effect

Inactive Publication Date: 2010-07-14
CHANGZHOU XINGGAN DRYING EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Coupled with the need for vacuum treatment, the collection of solvents is extremely limited, so there is still the problem of waste gas treatment

Method used

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  • Nitrogen closed cycle drying and solvent recovery system
  • Nitrogen closed cycle drying and solvent recovery system
  • Nitrogen closed cycle drying and solvent recovery system

Examples

Experimental program
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Effect test

Embodiment 1

[0040] figure 1 As shown, this embodiment has a fluidized bed dryer 1, a condensing device 2, a solid-gas separator 3, a circulating fan 4, a nitrogen heater 5, a solvent recovery tank 6, a material-sealed screw feeder 7, and a nitrogen supply pipe 8 , coolant supply pipe 9, steam supply pipe 10.

[0041] The air outlet of the fluidized bed dryer 1 is connected to the air inlet of the condensing device 2 through a pipeline, the air outlet of the condensing device 2 is connected to the solid-gas separator 3 through a pipeline, and the outlet of the solid-gas separator 3 The tuyere is connected with the circulation fan 4 through the circulation pipe 11, the wind output by the circulation fan 4 is sent to the nitrogen heater 5 for heating through the pipe, and the heated nitrogen is sent into the dryer 1 through the pipe. The circulation pipeline 11 connecting the solid-gas separator 3 and the circulation fan 4 is provided with a manual butterfly valve 13 and a vent port, and a ...

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Abstract

The invention relates to a nitrogen closed cycle drying and solvent recovery system comprising a dryer, a condensing device, a solid-gas separator, a circulating fan, a nitrogen heater, a solvent recovery tank and a nitrogen supply pipe, wherein the dryer is a fluidized bed dryer; an exhaust outlet of the fluidized bed dryer is connected with an air inlet of the condensing device through a pipeline; an air outlet of the condensing device is connected with the solid-gas separator; an air outlet of the solid-gas separator is connected with the circulating fan; air output by the circulating fan is delivered to the nitrogen heater for heating, and heated nitrogen is delivered to the dryer; a solvent collection opening of the condensing device is connected with the solvent recovery tank; cooling mediums of the condensing device and the solvent recovery tank are provided by cooling liquid supply pipes; and a feed port of the fluidized bed dryer is provided with a material seal type screw feeder. The invention realizes the production of a fluidized drying industry with continuous feeding and discharging and the recovery of an organic solvent without waste gas and water discharge and is beneficial to environmental protection.

Description

technical field [0001] The invention relates to a closed-circuit circulation drying and solvent recovery system. Background technique [0002] For the drying of materials with easy oxidation, low melting heat sensitivity and organic solvents, if the traditional vacuum dryer is used, the emission of waste gas will cause environmental pollution during the vacuum batch drying production process. Chinese patent authorization announcement number is CN2816709Y utility model patent specification discloses a kind of closed circuit centrifugal spray dryer, including gas heater, centrifugal spray drying tower and cyclone separation device connected in sequence, and airtight dehumidifier, spray The shower tower, condenser, solid-gas separator, airtight blower; the air inlet of the gas heater is also connected with the external inert gas supply pipe. China Authorized Notice No. is CN 2876648Y utility model patent specification discloses a circulating drying device, including drying tow...

Claims

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Application Information

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IPC IPC(8): F26B3/08F26B21/00F26B25/00B01D46/02F28D1/04F28F19/01
Inventor 臧德耿查奇星张俊
Owner CHANGZHOU XINGGAN DRYING EQUIP
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