Method and apparatus for circulating, desorbing, shunting, recovering, and reclaiming hot gas by using adsorption bed

A technology of hot gas circulation and regeneration device, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of difficulty in amplification, affecting the control of the temperature of the adsorption bed, etc., to reduce equipment investment and energy consumption, facilitate refining and recovery, Conducive to the effect of condensation separation

Inactive Publication Date: 2011-10-05
羌宁
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  • Summary
  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

However, when heated directly, hot spots will appear on the contact surface of granular activated carbon, which will affect the control of the temperature

Method used

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  • Method and apparatus for circulating, desorbing, shunting, recovering, and reclaiming hot gas by using adsorption bed
  • Method and apparatus for circulating, desorbing, shunting, recovering, and reclaiming hot gas by using adsorption bed

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Embodiment 1

[0034] Press the following parts to figure 1 Those skilled in the art can successfully implement the connection in the manner shown. The device of the present invention consists of a gas filter adopting AF5-N type, a flame arrester adopting mesh type HGS07, two adsorbers filled with adsorbent adopting CAU5-G type, a main fan adopting BF9-26NO5A type, and a thermal The exchanger adopts AAE-2-B type, a circulating air heater adopts GL-5 type, a gas condenser adopts TLS-10-12-400 type, and a circulating fan adopts BF9-264A type, etc. The gas source 31 is nitrogen gas, the oxygen content measuring probe 3 is a TB2A zirconia oxygen probe, the automatic control system is a PLC program controller, and the program-controlled valve is a KVD pneumatic disc valve.

[0035] When the system is running, the toluene-containing exhaust gas is removed by the filter 1, and then enters the subsequent recovery and regeneration system through the flame arrester 2. The following uses the adsorber ...

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Abstract

The invention belongs to the field of chemical separation and environment protection, and specifically relates to a method for circulating, desorbing, shunting, recovering, and reclaiming hot gas by using an adsorption bed. According to the present invention, a combined technology is adopted, that hot gas is circulated and desorbed by an adsorption bed, part of the desorbed gas is processed through bypass heat exchange, and the desorbed gas is condensed and recovered. With the method and the apparatus provided by the present invention, hot gas reclaiming procedures are carried out economically and effectively with the absorption bed. In prior arts, the energy consumption during hot gas desorbing is high, and the cost of hot exchange equipment is high. With the techniques of the present invention, the limitations are solved, and an advantage of hot gas desorbing technology is maintained, that organic matters recovered with a hot gas desorbing technology have relatively pure quality. The method and the apparatus provided by the present invention can be applied in the occasions of chemical adsorption separation, polluted gas purification, and organic solvents recovery. The method and the apparatus are especially suitable for the recovery of continuously discharged organic tail gas with a large total discharge amount. The recovery rate is higher than 90%.

Description

technical field [0001] The invention belongs to the technical fields of chemical separation and environmental protection, and in particular relates to a method and a device for recycling, desorbing, splitting, recovering and regenerating an adsorption bed. Background technique [0002] Adsorption is a traditional separation technology widely used in chemical industry, environmental protection and other fields. The desorption recovery in the adsorption process is one of the cores of the whole process. Traditional desorption methods include water vapor, hot gas desorption, pressure swing desorption, and solvent replacement. In recent years, new desorption methods such as electrothermal method, oxidation regeneration method, and ultrasonic regeneration method have emerged. [1，2] . The water vapor and hot gas desorption method is suitable for the desorption of low-molecular hydrocarbons with low boiling points and saturated carbon of aromatic organic substances. The enthalpy o...

Claims

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Application Information

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IPC IPC(8): B01J20/30B01D53/02
Inventor 羌宁
Owner 羌宁
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