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Energy-saving and clean production method for distilling rosin and process equipment

A clean production and turpentine technology, which is applied in the field of rosin processing, can solve the problems of unrealized industrial production and achieve the effects of saving phase change heat, enhancing heat transfer and mass transfer, and saving cooling water

Inactive Publication Date: 2016-08-03
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Before entering the distiller, the circulating active gas is preheated to 200-400°C by indirect heating with a heating furnace, and it is only the result of a small test in the laboratory, and industrial production has not yet been realized.

Method used

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  • Energy-saving and clean production method for distilling rosin and process equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Pass the circulating active gas into the circulating active gas preheater 1 for preheating. 2 Proceed to preheat to 100°C. Then the turpentine liquid obtained after rosin melting, filtering and clarification is sent into distiller 2 for distillation, and 6000kg of the rosin liquid is dropped into. The indirect heating medium of the distiller is heat conduction oil, and the temperature of the medium is 360°C. circulating gas N 2 The volume flow into the still is 280m 3 / h, the temperature is 100°C, and the pressure is 0.06MPa. The net turpentine liquid is distilled under reduced pressure in the distiller to steam the turpentine, the distillation temperature is 180° C., the vacuum degree is 93.33 kPa, and the distillation time is 30 min; the mixture of turpentine steam and non-condensable gas comes out from the top of the distiller 2 and enters the condenser A. After the turpentine is condensed, it enters the solvent storage tank 4 for gas-liquid separation, and the t...

Embodiment 2

[0032] Pass the circulating active gas into the circulating active gas preheater 1 for preheating. 2 Preheat to 150°C. Then the turpentine liquid obtained after rosin melting, filtering and clarification is sent into distiller 2 for distillation, and 6000kg of the rosin liquid is dropped into. The indirect heating medium of the distiller is water vapor, and the temperature of the medium is 360°C. circulating gas N 2 The volume flow into the still is 150m 3 / h, the temperature is 150°C, and the pressure is 0.06MPa. The net turpentine liquid is distilled under reduced pressure in the distiller to steam the turpentine, the distillation temperature is 190°C, the vacuum is 53.33kPa, and the distillation time is 45min; the mixture of turpentine steam and non-condensable gas comes out from the top of the distiller 2 and enters the condenser A. After the turpentine is condensed, it enters the solvent storage tank 4 for gas-liquid separation, and the turpentine condensate and non-c...

Embodiment 3

[0034] Pass the circulating active gas into the circulating active gas preheater 1 for preheating. 2 Proceed to preheat to 200°C. Then the turpentine liquid obtained after rosin melting, filtering and clarification is sent into distiller 2 for distillation, and 6000kg of the rosin liquid is dropped into. The indirect heating medium of the distiller is water vapor, and the temperature of the medium is 360°C. circulating gas N 2 The volume flow into the still is 280m 3 / h, the temperature is 200°C, and the pressure is 0.04MPa. The net turpentine liquid is distilled under reduced pressure in the distiller to steam the turpentine, the distillation temperature is 200° C., the vacuum degree is 73.33 kPa, and the distillation time is 35 min; the mixture of turpentine steam and non-condensable gas comes out from the top of the distiller 2 and enters the condenser A. After the turpentine is condensed, it enters the solvent storage tank 4 for gas-liquid separation, and the turpentin...

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Abstract

The invention discloses an energy-saving and clean production method for distilling rosin. The energy-saving and clean production method is a technique for distilling the rosin employing CO2 and / or N2 as a circulating activated gas. In the production process of separating the rosin and turpentine by rosin distillation, CO2 and / or N2 are introduced as the activated gases, so that partial pressure of the component in the turpentine of the distillation system is reduced; desorption of the turpentine is promoted to easily distill the rosin; meanwhile, the activated gas also plays a rosin stirring role; interphase heat transfer an mass transfer of the distillation system are intensified; the distillation speed and the product quality are improved. The energy-saving and clean production method has the advantages that the circulating activated gas does not generate a phase change in the rosin distillation process; phase change heat when super-heated steam is used as the activated gas is saved; the energy consumption is reduced, so that the investment cost on equipment is reduced; the obtained product does not contain moisture; the rosin is free of a crystallization phenomenon; the technique is transparent and not turbid. The CO2 and / or the N2 are used in cycle, so that the distillation process is fully sealed operation, is free of three wastes, and is the energy-saving and clean production method.

Description

technical field [0001] The invention relates to the technical field of forestry product processing, in particular to a method for processing rosin. Background technique [0002] Rosin and turpentine can be obtained by melting, filtering, clarifying and distilling rosin. Rosin distillation is a key process in the entire rosin turpentine production process, which determines the energy consumption of rosin processing and the important indicators of rosin product quality - color, softening point and crystallization. The traditional production method of rosin distillation is the steam distillation process, which uses superheated steam with a pressure above 0.8MPa and a temperature above 320°C to distill rosin. In the distillation process, the water vapor used for indirect heating is called closed steam; the superheated steam that directly enters the distiller after decompression and directly contacts with rosin is called active gas, and the production of each ton of rosin consum...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09F1/02C09F3/00
CPCC09F1/02C09F3/00Y02P20/10
Inventor 陈小鹏王琳琳梁杰珍韦小杰周龙昌
Owner GUANGXI UNIV
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