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Rectification equipment and method for iodine-containing hydroiodic acid material liquid

A technology of hydroiodic acid and rectification, applied in the directions of hydrogen iodide, separation method, iodine/hydrogen iodide, etc., can solve problems such as inability to effectively separate, and achieve the effect of improving concentration-extraction efficiency

Active Publication Date: 2019-04-09
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The object of the present invention is to provide a kind of rectification equipment and the method that contain iodine hydroiodic acid feed liquid (HIx), aim at spray technology and traditional rectification coupling, carry out spray and rectification operation to HIx feed liquid simultaneously, and Implement HI and I in HIx 2 The synchronous concentration and extraction overcomes the ineffective separation of I by conventional HIx rectification 2 disadvantages, thereby improving the concentration-extraction efficiency of HIx

Method used

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  • Rectification equipment and method for iodine-containing hydroiodic acid material liquid

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Effect test

Embodiment 1

[0030] Such as figure 1 As shown, in the present embodiment, the rectifying kettle 1 has a volume of 2L, is equipped with a heating jacket with a power of 1kW, and has a high-pressure spray head 4 with a flow-through component of tantalum; the volume of the iodine collection kettle is 3L, including iodine The main tank 2a of the collection kettle, the tank body isolation device 2b and the bottom discharge tank 2c are equipped with a thermal insulation cover; the rectification kettle 1 and the iodine collection kettle are arranged side by side, and the two are connected through a horizontal channel; the spray head 4 accepts the material The head of the liquid delivery pipe is inserted into the rectification kettle 1, the spray direction of the spray head 4 is aligned with the iodine collection kettle, and the centerline of the spray head and the centerline of the horizontal channel are on the same horizontal line. After the tank isolation device 2b isolates the bottom discharge...

Embodiment 2

[0037] Such as figure 1 As shown, in the present embodiment, the rectification kettle 1 has a volume of 3.5L, is equipped with a heating jacket with a power of 3kW, and has a high-pressure spray head 4 with a tantalum flow part; the iodine collection kettle includes the iodine collection kettle main body Tank 2a, tank body isolation device 2b and bottom unloading tank 2c have a volume of 4L and are equipped with a thermal insulation cover; the rectification kettle 1 and the iodine collection kettle are arranged side by side, and the two are connected through a horizontal channel; the spray head 4 undertakes The head of the feed liquid delivery pipe is inserted into the rectification kettle 1, the spray direction of the spray head 4 is aligned with the iodine collection kettle, and the centerline of the spray head and the centerline of the horizontal channel are on the same horizontal line. After the tank isolation device 2b isolates the bottom discharge tank 2c from the iodine...

Embodiment 3

[0044] Such as figure 1 As shown, in the present embodiment, the rectifying kettle 1 has a volume of 18L, is equipped with a heating mantle with a power of 6kW, and has a high-pressure spray nozzle 4 with a flow-through component of tantalum; the volume of the iodine collection kettle is 25L, including iodine The main tank 2a of the collection kettle, the tank body isolation device 2b and the bottom discharge tank 2c are equipped with a thermal insulation cover; the rectification kettle 1 and the iodine collection kettle are arranged side by side, and the two are connected through a horizontal channel; the spray head 4 accepts the material The head of the liquid delivery pipe is inserted into the rectification kettle 1, the spray direction of the spray head 4 is aligned with the iodine collection kettle, and the centerline of the spray head and the centerline of the horizontal channel are on the same horizontal line. After the tank isolation device 2b isolates the bottom disch...

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Abstract

The invention provides rectification equipment and method for iodine-containing hydroiodic acid material liquid and belongs to the technical field of chemical equipment and separation extraction. Theequipment provided by the invention is mainly composed of a rectification kettle, a rectification column, a tower top condensation reflux device, a tower top discharging pipeline, a spraying head andan iodine collection kettle. The iodine collection kettle and the rectification kettle are arranged in parallel and are connected through a horizontal channel; and the head of the spraying head is inserted into the rectification kettle. According to the method provided by the invention, spraying and rectification technologies are coupled and the iodine-containing hydroiodic acid material liquid with the content which is greater than constant boiling concentration is injected into a normal-pressure or decompression rectification tower kettle in a spraying manner, and separation operation is carried out; finally, high-concentration hydroiodic acid or HI gas is obtained from the top of a rectification tower; the hydroiodic acid with the constant boiling concentration is obtained in the rectification kettle and I2 is obtained in an iodine collector, so that synchronous concentration and extraction of the HI and the I2 in the iodine-containing hydroiodic acid material liquid are realized; and the disadvantage that the I2 cannot be effectively separated through a conventional iodine-containing hydroiodic acid material liquid rectification method is effectively overcome, and the concentration-extraction efficiency of the iodine-containing hydroiodic acid material liquid is remarkably improved.

Description

technical field [0001] The present invention relates to a kind of iodine-containing hydroiodic acid material liquid (being hydrogen iodide-iodine-water ternary solution, HI-I 2 -H 2 (2) a rectifying equipment and method, which belong to the technical field of chemical equipment and separation and extraction. Background technique [0002] Iodohydriodic acid feed solution (i.e. hydrogen iodide-iodine-water ternary solution, HI-I 2 -H 2 O (referred to as HIx) rectification is an important operation process in the thermochemical iodine-sulfur cycle splitting water hydrogen production process and the electrochemical production process of hydroiodic acid. Taking the former, the iodine-sulfur cycle as an example, the iodine-sulfur cycle couples the following three chemical reactions from 1) to 3), that is, the corresponding Bunsen reaction section, sulfuric acid decomposition reaction section and HI decomposition reaction section. Form a closed cycle, the net reaction is water ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D3/14B01D3/10B01D3/42C01B7/13C01B7/14
CPCB01D3/10B01D3/14B01D3/143B01D3/42C01B7/135C01B7/14
Inventor 陈崧哲王来军张平徐景明
Owner TSINGHUA UNIV