Device and method for reducing oxidation degree of adsorbed solvent

A technology of degree of oxidation and adsorption of solvents, applied in chemical instruments and methods, separation methods, separation of dispersed particles, etc., can solve problems such as damage, accelerated oxidation and decomposition reactions, poor thermal conductivity, etc.

Inactive Publication Date: 2011-10-19
JG ENVIRONMENTAL TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, because traditional industries and some high-tech related peripheral industries use a large amount of ketones, such as acetone, MEK and cyclohexanone, etc. as solvents, there is often a potential danger of carbon bed fire, and most of the carbon bed fire accidents are caused by activated carbon. Adsorption heat or heat generated by solvent oxidation reaction accumulates in the carbon bed, resulting in abnormal temperature rise and spontaneous combustion; at the same time, due to the porous structure of activated carbon, poor thermal conductivity can easily cause local heat storage. Under normal operating conditions, the adsorption capacity The heat generated and the heat released to the adsorbed gas are in balance, but when the adsorbed solvent undergoes oxidative decomposition, the balance is destroyed and the oxidative decomposition reaction is further accelerated, eventually leading to an abnormal rise in temperature

Method used

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  • Device and method for reducing oxidation degree of adsorbed solvent
  • Device and method for reducing oxidation degree of adsorbed solvent
  • Device and method for reducing oxidation degree of adsorbed solvent

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Effect test

Embodiment 1

[0047] See figure 2 , which is a specific embodiment of a device for reducing the degree of oxidation of the adsorbed solvent in the present invention, which includes a fan 5 , a steam generating unit 10 , an inert gas generating unit and an activated carbon adsorption and desorption unit 20 .

[0048]The operation of the present invention to purify the organic waste gas to be treated is as follows. The plurality of valves 31, 33, 35, 37 and 39 in the device are opened or closed as required. First, the organic waste gas is pumped from the air inlet A through the fan 5, and then The valve 31 enters the activated carbon adsorption-desorption unit 20, and the adsorption procedure is carried out in the activated carbon adsorption-desorption unit 20, that is, the organic matter (comprising ketone solvent) in the organic waste gas is the The activated carbon is absorbed, and the clean air after purification flows out through the air outlet B through the valve 37; when the adsorptio...

Embodiment 2

[0051] See image 3 , which is another specific embodiment of a device for reducing the degree of oxidation of the adsorbed solvent in the present invention, which includes a fan 5, a steam generating unit 10, an inert gas generating unit and two activated carbon adsorption and desorption units 20, 22 (And these activated carbon adsorption and desorption units are connected in series).

[0052] The operation of the present invention to purify the organic waste gas to be treated is as follows. The plurality of valves 31, 33, 35, 37 and 39 in the device are opened or closed as required. First, the organic waste gas is pumped from the air inlet A through the fan 5, and then The valve 31 enters these activated carbon adsorption and desorption units 20, 22, and the adsorption procedure is carried out in these activated carbon adsorption and desorption units 20, 22, that is, the organic substances (comprising ketone solvents) in the organic waste gas are absorbed and desorbed by the...

Embodiment 3

[0055] See Figure 4 , which is another specific embodiment of a device for reducing the degree of oxidation of the adsorbed solvent in the present invention, which includes a fan 5, a steam generating unit 10, an inert gas generating unit and two activated carbon adsorption and desorption units 20, 22 (And these activated carbon adsorption and desorption units are connected in parallel).

[0056] The operation of the present invention to purify the organic waste gas to be treated is as follows. The plurality of valves 31, 32, 33, 34, 35, 36, 37, 38, 39 and 40 in the device are opened or closed as required. First, the organic waste gas is removed from the The air inlet A is pumped through the fan 5, and enters the activated carbon adsorption-desorption units 20, 22 through the valves 31, 32, and the adsorption process is carried out in these activated carbon adsorption-desorption units 20, 22, that is, the organic matter in the organic waste gas (comprising ketone solvents) i...

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Abstract

The invention provides a device for reducing oxidation degree of an adsorbed solvent, and the device comprises: at least one activated carbon adsorbing and desorbing unit which can be disposed in parallel and/or in series; a fan which is disposed at the upstream end of the activated carbon adsorbing unit, and is used to pumping air to be treated to the adsorbing unit; a steam generating unit which provides steam to perform an activated carbon desorbing program; an inert gas unit which provides inert gas to perform a blowin-off program so as to reduce the oxygen content of the system. The invention also provides a method for reducing oxidation degree of an adsorbed solvent.

Description

technical field [0001] The invention relates to a device and a method capable of effectively reducing the oxidation degree of an adsorbed solvent, in particular to a recovery device and a method for the adsorbed solvent containing ketone organic solvents. Background technique [0002] Greenhouse gas (CO 2 ) reduction and resource reuse are issues that the world must face together. Due to the rapid development of the industry in the past and the environmental protection policy that focused on the reduction rate, the industry did not pay attention to resources when dealing with volatile organic waste gases (VOCs). Recycling and reuse, while the main treatment method is burning. [0003] However, at present, due to the continuous increase in international raw materials, it is more and more common to use activated carbon adsorption and desorption systems as solvent recovery in organic waste gas; but because ketone solvent gases in organic waste gas can easily cause carbon bed f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/02
Inventor 张丰堂
Owner JG ENVIRONMENTAL TECH
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