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TFT-LCD organic solvent waste liquid countercurrent regulation and control absorption system and method

An organic solvent and absorption system technology, which is applied in the field of TFT-LCD organic solvent waste liquid countercurrent regulation and absorption system, can solve problems such as low production efficiency and human injury.

Active Publication Date: 2021-09-21
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, after activated carbon adsorption is saturated or nearly saturated, the production efficiency of the saturated or nearly saturated activated carbon replacement and organic separation process is low, and there is still human intervention, and some toxic and harmful organic waste liquid may also cause damage to the human body

Method used

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  • TFT-LCD organic solvent waste liquid countercurrent regulation and control absorption system and method
  • TFT-LCD organic solvent waste liquid countercurrent regulation and control absorption system and method
  • TFT-LCD organic solvent waste liquid countercurrent regulation and control absorption system and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] In the countercurrent control absorption system of the present invention:

[0042] The lower part of the absorption pipe 1 is provided with a lower filter plate 101, and the lower part of the lower filter plate 101 is a lower water inlet chamber 102;

[0043] The absorption pipe 1 is provided with a longitudinal detour tube 105, the longitudinal detour tube 105 is located between the lower filter plate 101 and the upper filter plate 103, and the bottom positions of several longitudinal detour tubes 105 are connected to the sinking recovery tube 9, and the sinking recovery tube 9 is equipped with a pressurized deflector 10 .

[0044] The charcoal suction branch pipe 901 is connected at the bottom of the longitudinal detour pipe 105, and the downstream end of the charcoal suction branch pipe 901 is connected with the sinking recovery pipe 9, and the charcoal suction branch pipe 901 is equipped with a branch solenoid valve 902.

[0045] The liquid inlet pipe 2 is connecte...

Embodiment 2

[0047] Based on the first embodiment, the countercurrent regulating absorption system of the present invention involves a solid-liquid separation device 11 .

[0048] The solid-liquid separation device 11 is located at the downstream end of the sinking recovery pipe 9. The lower side of the solid-liquid separation device 11 is provided with a liquid discharge pipe 12, and the liquid discharge pipe 12 leads out the liquid. The downstream of the liquid discharge pipe 12 is provided with a second discharge pipe 14 and the second return pipe 15 , the downstream end of the second return pipe 15 is connected with the liquid inlet pipe 2 .

[0049] The solid-liquid separation device 11 is connected to the heating separation device 18 through the wet activated carbon conduction mechanism 17, and the downstream end of the heating separation device 18 is connected to the condensation recovery device 19, and the heating separation device 18 is connected to the activated carbon supply devi...

Embodiment 3

[0052] Based on Embodiment 1 and Embodiment 2, in the countercurrent control absorption system of the present invention:

[0053] Longitudinal detour pipe 105, the bottom area is equipped with a photoelectric detection module 106 for detecting the sinking accumulation of activated carbon;

[0054] Longitudinal detour pipe 105, the upper area is connected with the supply branch pipe 8 that is used to pressurize the supply of activated carbon particles, and several supply branch pipes 8 are jointly connected with an activated carbon supply pipe 7, and the upstream end of the activated carbon supply pipe 7 is equipped with an activated carbon supply device 6.

[0055] The pressurized deflector device 10 is arranged on the liquid inlet pipe 2, the sinking recovery pipe 9 and related pipeline positions that require diversion drive.

[0056] The concentration detecting device 13 is arranged on the liquid inlet pipe 2 , the liquid outlet pipe 3 and the second return pipe 15 . The co...

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Abstract

The invention discloses a TFT-LCD organic solvent waste liquid countercurrent regulation and control absorption system and method, and relates to the technical field of TFT-LCD organic solvent treatment. The system comprises longitudinal circuitous pipes located between a lower filter plate and an upper filter plate, and the bottom positions of the longitudinal circuitous pipes of a plurality of absorption pipes are jointly connected with a sinking recovery pipe; a photoelectric detection module is arranged in the bottom area of the longitudinal circuitous pipes; the upstream end of an activated carbon supply pipe is provided with an activated carbon supply device; the downstream end of the sinking recovery pipe is connected with a solid-liquid separation device; and the solid-liquid separation device comprises a wet activated carbon conduction mechanism, and a heating separation device is arranged at the downstream end of the wet activated carbon conduction mechanism. By means of a non-disassembly replacement mode, activated carbon particles reaching a certain saturation amount in the absorption pipes are guided out, activated carbon subjected to adsorption saturation is subjected to solid-liquid and heating degassing step by step, an organic solvent subjected to saturated adsorption is separated and recycled, and the activated carbon particles are also recycled.

Description

technical field [0001] The invention belongs to the technical field of TFT-LCD organic solvent treatment, in particular to a TFT-LCD organic solvent waste liquid countercurrent regulation and absorption system and method. Background technique [0002] As the mainstream technology of flat panel display, TFT-LCD has achieved high economic benefits in production, but at the same time, a large amount of high-concentration high-molecular organic waste liquid is produced in the production process, so while obtaining good economic benefits, it also needs Considering the issue of environmental protection, this part of the production wastewater must also be treated in consideration of its water quality characteristics. [0003] In the organic waste liquid of TFT-LCD, there are many organic solvents that can be recycled, such as NMF, BDG, MEA, DMSO, PGMEA, TMAH, etc., all of which have high economic recovery value. [0004] In the TFT-LCD organic waste liquid treatment technology, th...

Claims

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Application Information

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IPC IPC(8): B01D15/10B01D15/18B01D15/20B01D5/00
CPCB01D15/10B01D15/1807B01D15/203B01D5/0057B01D5/009B01J20/20B01D29/56B01D29/52B01D29/01C02F2101/32C02F2103/34C02F1/283C02F2303/16C02F2209/005C02F2209/11B01D36/00B01D37/00C02F1/008C02F2101/30C02F2201/005
Inventor 倪进娟崔康平陈奕涵郭志张鸿志杨永杰
Owner HEFEI UNIV OF TECH
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