Organic solvent purification device and method

Abstract

The invention relates to the technical field of environmental protection, and in particular relates to an organic solvent purification device and method. The organic solvent purification device comprises a low-boiling-point solvent separator under a vacuum condition, a first cooler, a first relay tank, a high-boiling-point substance and residue separator, a second cooler, and a second relay tank;the upper and lower sections of the low-boiling-point solvent separator communicate with the first cooler and the high-boiling-point substance and residue separator, respectively; the lower section ofthe first cooler communicates with the first relay tank; the upper section of the high-boiling-point substance and residue separator communicates with the second cooler; and the lower section of thesecond cooler communicates with the second relay tank. The organic solvent purification device and method disclosed by the invention can separate different kinds of organic solvents from an original waste liquid, and the method is simple, effective, energy-saving and friendly to environment.

Description

technical field

[0001] The invention relates to the technical field of environmental protection, in particular to an organic solvent purification device and method. Background technique

[0002] In recent years, with the rapid development of the semiconductor industry and new energy sources, the amount of raw materials used in production has also increased significantly, especially organic solvents such as IPA (isopropanol) and Thinner-1 (propylene glycol methyl ether ethyl alcohol) used in semiconductors. ester + isopropanol methyl ether), NMP (N-methylpyrrolidone), EKC270T (developer), Thinner-2 (propylene glycol methyl ether acetate + isopropanol methyl ether), Develop-2 (cyclopentanone ) and NMP, an organic solvent used in lithium-ion batteries, are not only used in large quantities but also require high quality. Because IPA, Thinner-1, NMP, EKC270T, Thinner-2 and Develop-2 are organic solvents containing N, especially NMP, which have a great impact on the eutrophicatio...

Examples

Embodiment 1

[0030] Such as figure 1 As shown, this embodiment discloses a purification device for organic solvents, including a low boiling point solvent separator 21 under vacuum conditions, a first cooler 22, a first relay tank 23, a high boiling point and residue separator 24 , the second cooler 25, the second relay tank 26;

[0031] The upper section and the lower section of the low boiling point solvent separator 21 are respectively communicated with the first cooler 22 and the high boiler and residue separator 24;

[0032] The lower section of the first cooler 22 communicates with the first relay tank 23;

[0033] The upper section of the high boiling point and residue separator 24 communicates with the second cooler 25 , and the lower section of the second cooler 25 communicates with the second relay tank 26 .

[0034] The discharge port at the lower end of the second relay tank 26 communicates with the finished product tank 12 .

[0035] The purification device also includes a ...

Embodiment 2

[0045] This embodiment discloses a method for separating an organic solvent using the organic solvent purification device described in Embodiment 1, comprising the following steps:

[0046] S1: remove the substances with lower boiling point in the organic solution through the low boiling point solvent separator and the first cooler to obtain the intermediate liquid;

[0047] S2: Remove substances with higher boiling points and metal ions in the intermediate liquid through the high boiling point and residue separator and the second cooler.

[0048]S0 is also included before S1: the raw waste liquid to be separated first enters the filter to obtain the filtered liquid, and the filtered liquid enters the preheater for preheating treatment.

[0049] S1 specifically includes the following steps: the low boiling point substance is heated and evaporated, enters the first cooler through the pipe in the form of steam, the ice water cooled by the first cooler becomes liquid, and the con...

technical field

[0001] The invention relates to the technical field of environmental protection, in particular to an organic solvent purification device and method. Background technique

[0002] In recent years, with the rapid development of the semiconductor industry and new energy sources, the amount of raw materials used in production has also increased significantly, especially organic solvents such as IPA (isopropanol) and Thinner-1 (propylene glycol methyl ether ethyl alcohol) used in semiconductors. ester + isopropanol methyl ether), NMP (N-methylpyrrolidone), EKC270T (developer), Thinner-2 (propylene glycol methyl ether acetate + isopropanol methyl ether), Develop-2 (cyclopentanone ) and NMP, an organic solvent used in lithium-ion batteries, are not only used in large quantities but also require high quality. Because IPA, Thinner-1, NMP, EKC270T, Thinner-2 and Develop-2 are organic solvents containing N, especially NMP, which have a great impact on the eutrophicatio...

Examples

Embodiment 1

[0030] Such as figure 1 As shown, this embodiment discloses a purification device for organic solvents, including a low boiling point solvent separator 21 under vacuum conditions, a first cooler 22, a first relay tank 23, a high boiling point and residue separator 24 , the second cooler 25, the second relay tank 26;

[0031] The upper section and the lower section of the low boiling point solvent separator 21 are respectively communicated with the first cooler 22 and the high boiler and residue separator 24;

[0032] The lower section of the first cooler 22 communicates with the first relay tank 23;

[0033] The upper section of the high boiling point and residue separator 24 communicates with the second cooler 25 , and the lower section of the second cooler 25 communicates with the second relay tank 26 .

[0034] The discharge port at the lower end of the second relay tank 26 communicates with the finished product tank 12 .

[0035] The purification device also includes a ...

Embodiment 2

[0045] This embodiment discloses a method for separating an organic solvent using the organic solvent purification device described in Embodiment 1, comprising the following steps:

[0046] S1: remove the substances with lower boiling point in the organic solution through the low boiling point solvent separator and the first cooler to obtain the intermediate liquid;

[0047] S2: Remove substances with higher boiling points and metal ions in the intermediate liquid through the high boiling point and residue separator and the second cooler.

[0048]S0 is also included before S1: the raw waste liquid to be separated first enters the filter to obtain the filtered liquid, and the filtered liquid enters the preheater for preheating treatment.

[0049] S1 specifically includes the following steps: the low boiling point substance is heated and evaporated, enters the first cooler through the pipe in the form of steam, the ice water cooled by the first cooler becomes liquid, and the con...

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