Selenium absorption tower

A technology of absorption tower and selenium element, applied in gas treatment, membrane technology, separation of dispersed particles, etc., can solve the problems of lower dissolution rate, lower absorption efficiency, higher cost, etc., and achieve the effect of improving recovery efficiency and improving utilization rate
CN106310885AInactive Publication Date: 2017-01-11NANJING YONGLIANG FURNACE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NANJING YONGLIANG FURNACE
Publication Date
2017-01-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a selenium absorption tower which comprises a tower body and a tower cover fixedly connected with the upper end of the tower body, wherein a feeding hole and an exhaust hole are formed in the tower cover; an in-tower insert pipe is inserted into the exhaust hole; at least one air hole communicated with an inner chamber of the in-tower insert pipe is formed in the lower end of the in-tower insert pipe; the highest point of the air hole is located on a liquid level line of the absorbing liquid in the absorption tower; a cooling jacket for circulating the cooling liquid is arranged on an outer wall of the tower body; and the liquid level line means the contour line of the liquid level when the absorbing liquid in the absorption tower reaches a specified containing volume. In the selenium absorption tower, the air hole is formed at the lower end of the in-tower insert pipe, and the highest point of the air hole is lower than the liquid level line of the absorbing liquid in the absorption tower; when the absorbing liquid in the absorption tower reaches the specified containing volume, the air hole is completely soaked into the absorbing liquid; and when the selenium absorption tower runs, the raw gas containing selenium dioxide is processed with the absorbing liquid and then is discharged from the absorption tower through the in-tower insert pipe, so that the recovery efficiency of selenium dioxide can be increased.
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Description

technical field

[0001] The invention relates to the field of selenium element recovery, in particular to a selenium element absorption tower. Background technique

[0002] At present, in the recovery process of selenium element, the material containing selenium element is firstly boiled at high temperature to vaporize the selenium element, then the selenium element gas is absorbed with lye, and finally the pasty substance formed by absorbing the selenium element is Separation is carried out to obtain selenium element.

[0003] The absorption efficiency of selenium gas in the absorption tower affects the recovery efficiency of alkene. In order to improve the absorption rate of selenium gas, the patent application number 201420757400.2 discloses a device for absorbing selenium dioxide gas. In this device, A partition plate is arranged in the middle of the absorption tank, and a plurality of separation holes are arranged on the partition plate. When the device is in operation,...

Claims

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