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Methylbenzene recycling system

A recovery system and toluene technology, applied in the separation of dispersed particles, chemical instruments and methods, separation methods, etc., can solve the problems of harmful operators, reduced adsorption capacity of activated carbon, and operation of hemp tops.

Inactive Publication Date: 2009-10-21
石狮市亿祥染整有限公司
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

The disadvantage of this toluene treatment method is that the adsorption capacity of activated carbon decreases with the prolongation of use time. On the one hand, the decline in adsorption capacity makes the tail gas emission not up to standard. On the other hand, activated carbon often needs to be replaced. It is also harmful to the body of the operator, and the price of activated carbon is high, resulting in an increase in the cost of exhaust gas treatment

Method used

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  • Methylbenzene recycling system

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Embodiment Construction

[0007] refer to figure 1 , the embodiment discloses a toluene recovery system, including an adsorption tank 1, an adsorption tank 2, an adsorption tank 3, a steam generator 4, a cooler 5, a separation box 6 and a fan 7, the adsorption tank 1 is a hollow structure and its The inner side is filled with activated carbon, and the adsorption tank 1 is respectively provided with an adsorption inlet 11, an adsorption exhaust port 12, a desorption steam inlet 13 and a desorption exhaust outlet 14. The structure of the adsorption tank 2 and the adsorption tank 3 Same as adsorption tank 1, the adsorption inlets of each adsorption tank are respectively connected to the air outlet of fan 7 through electromagnetic valve 8, the air inlet of fan 7 is connected to the exhaust gas collection port, and steam generator 4 generates steam by heating fresh water to each The adsorption tank provides high-temperature steam for desorption, and the exhaust port of the steam generator 4 is connected wit...

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Abstract

The invention provides a methylbenzene recycling system with high recycling rate and low operating cost, comprising at least two absorbing tanks, a steam generator, a cooler, a separating box and a fan; the two absorbing tanks are respectively hollow structure and the inner sides thereof are respectively filled with active carbon; the two absorbing tanks are respectively provided with an absorbing air inlet, an absorbing exhaust outlet, a desorbing steam inlet and a desorbing exhaust outlet; the absorbing air inlet of each absorbing tank is connected with an air outlet of the fan by a solenoid valve; an air inlet of the fan is communicated with a tail gas collecting port; an exhaust outlet of the steam generator is connected with the desorbing steam inlet of each absorbing tank by the solenoid valve; the absorbing exhaust outlet is arranged on the top part of each absorbing tank and provided with the solenoid valve with the atmosphere so as to exhaust gas to the atmosphere; the desorbing exhaust outlets of the all absorbing tanks are connected with an air inlet of the cooler by the solenoid valve; and a liquid outlet of the cooler is connected with a liquid inlet of the separating box.

Description

technical field [0001] The invention relates to a toluene recovery system, which is used for recovering toluene gas in industrial production tail gas. Background technique [0002] As an organic solvent, toluene is widely used in industrial production, especially in the textile industry, followed by environmental pollution caused by volatilization of toluene. Among the known methods for treating toluene tail gas, there is a kind of treatment by activated carbon adsorption of toluene, which includes filter, cooler, blower fan and activated carbon adsorber, and the tail gas containing toluene gas passes through the filter to filter out the solids of large particles , and then the exhaust gas is properly cooled by the cooler, and finally the exhaust gas is sent to the activated carbon adsorber by the fan. In the activated carbon adsorber, the toluene gas is adsorbed by the activated carbon, while other gases are discharged to the atmosphere. The disadvantage of this toluene tr...

Claims

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Application Information

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IPC IPC(8): B01D53/18
Inventor 曾国平
Owner 石狮市亿祥染整有限公司
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