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Method of purifying large quantity of exhaust gas containing dilute volatile hydrocarbon

A hydrocarbon, volatile technology used in the purification of large amounts of exhaust gas

Inactive Publication Date: 2008-07-16
SHISUTEMU ENJI SAABISU
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] However, even the "fibrous activated carbon method" and the "honeycomb rotor method", any of them are already known technologies, but they have a problem that the concentration of condensed volatile hydrocarbons is as high as 1000-5000PPM. Concentrations of volatile hydrocarbons cannot be combusted, so there are economics of recovery

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  • Method of purifying large quantity of exhaust gas containing dilute volatile hydrocarbon
  • Method of purifying large quantity of exhaust gas containing dilute volatile hydrocarbon

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Embodiment 1

[0096] (Concrete application example 1 of the present invention)

[0097] Below on the basis of Fig. 1, the "processing of 5000m per hour containing 500PPM ethyl acetate" of the specific application example 1 of the present invention is illustrated by way of example. 3 In addition, Fig. 1 is a flowchart showing an embodiment of the purification method of the present invention. In the figure, 10 is a waste gas supply pipeline, 11 is a honeycomb pipeline, 12 is a regeneration air supply pipeline, and 13 is discharged to The gas pipeline in the atmosphere, 1 is the supply pipeline of concentrated gas, 2a, 2b, 3a, 3b are electromagnetic valves, 4 is a vacuum pump, 5 is a gas-liquid separator, 6 is a return pipeline for non-condensed gas, 7a, 7b are adsorption Towers, 8, 8a, 8b are air (purified gas) supply pipes, 9 is a gas pipe for discharging into the atmosphere, 9a, 9b are solenoid valves.

[0098] As shown above, this example is "treating 5000m per hour containing 500PPM ethy...

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Abstract

A purification method of exhaust gas in which "an adsorption device (adsorption tower 7a, 7b) composed of an adsorbent layer filled with pre-coated mesoporous activated carbon" switching between adsorption and desorption is used, Before being treated with this adsorption device, in order to concentrate the dilute volatile hydrocarbons contained in the exhaust gas in advance, a "pretreatment device (honeycomb rotor 11 or fixed honeycomb)" to increase the concentration. Therefore, there is provided a method of purifying a large amount of exhaust gas containing a dilute concentration of volatile hydrocarbons in which no carbon dioxide is emitted and the contained volatile hydrocarbons can be recovered very easily in liquid form. Still further, a purification method to obtain "zero emissions" with respect to volatile hydrocarbons can be provided.

Description

technical field [0001] The invention relates to a method for purifying waste gas containing volatile hydrocarbons, especially a method for purifying a large amount of waste gas containing dilute volatile hydrocarbons discharged into the atmosphere. In this method, carbon dioxide is not discharged into the atmosphere after burning the waste gas as in the prior art, but according to "the viewpoint of preventing global warming" and "the viewpoint of pollution control", in order to complete the above-mentioned waste gas to achieve the purpose of zero emission purification, from The adsorption method for effectively separating and reusing volatile hydrocarbons in the exhaust gas is a purification method for a large amount of exhaust gas containing dilute volatile hydrocarbons. Background technique [0002] Hitherto, various methods for treating exhaust gas containing volatile hydrocarbons have been proposed. In particular, combustion methods, adsorption methods, absorption metho...

Claims

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Application Information

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IPC IPC(8): B01D53/44B01D53/02B01D53/04B01D53/06B01D53/81
Inventor 田原弘能智博史
Owner SHISUTEMU ENJI SAABISU
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