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CN-224207420-U - Purifying device for removing impurities from methanol of analytical liquid

CN224207420UCN 224207420 UCN224207420 UCN 224207420UCN-224207420-U

Abstract

The utility model discloses an analysis liquid methanol impurity removal and purification device, wherein a rectifying tower is provided with a feed inlet, a gas phase outlet, a tower kettle liquid outlet, a gas phase circulation port lower than the feed inlet and a reflux port lower than the gas phase outlet and higher than the feed inlet, the liquid inlet and the liquid outlet of a reboiler are respectively communicated with the tower kettle liquid outlet and the gas phase circulation port, the liquid inlet of a reflux tank is communicated with the gas phase outlet through a primary condenser, the reflux tank provides a distillation sample, and the distribution port of the reflux tank is respectively communicated with the reflux port and a methanol tank through a first throttle valve and a second throttle valve. Compared with the prior art, the method has the advantages of recycling the analysis liquid, protecting the environment, reducing the enterprise cost, and in addition, the purity of the methanol is better, the methanol is recycled with high quality, and the analysis and the regeneration of the resin adsorption column are effectively ensured.

Inventors

  • HUANG LIXIANG
  • HUANG FENG
  • DONG SHIYU
  • DONG JING
  • LUO ZHONGSHI

Assignees

  • 百色世裕科技股份有限公司

Dates

Publication Date
20260508
Application Date
20250430

Claims (9)

  1. 1. The utility model provides a resolution liquid methyl alcohol edulcoration purification device which characterized in that includes: A rectifying tower (T1) provided with a feed inlet (T1-1), a gas phase outlet (T1-2), a tower kettle liquid outlet (T1-3), a gas phase circulation port (T1-4) lower than the feed inlet (T1-1), and a reflux port (T1-5) lower than the gas phase outlet (T1-2) and higher than the feed inlet (T1-1); The liquid inlet and the liquid outlet of the reboiler (E1) are respectively communicated with the liquid outlet (T1-3) of the tower kettle and the gas-phase circulation port (T1-4), the reboiler (E1) is used for extracting the analysis liquid of the rectifying tower (T1) and heating the analysis liquid, and the reboiler (E1) is used for flowing the gas-phase liquid material into the rectifying tower (T1) through the gas-phase circulation port (T1-4); the liquid inlet of the reflux tank (V1) is communicated with the gas phase outlet (T1-2) through a primary condenser (E31), the reflux tank (V1) is used for providing a distillation sample, and the distribution port of the reflux tank (V1) is used for respectively communicating the reflux port (T1-5) and the methanol tank through a first throttle valve (F1) and a second throttle valve (F2).
  2. 2. The device for purifying and purifying the resolved methanol as claimed in claim 1, wherein the rectifying tower (T1) is provided with a first liquid level sensor (L1), a tower kettle discharge pump (P1) communicated with a tower kettle liquid outlet (T1-3) discharges waste through a third throttle valve (F3), the third throttle valve (F3) is electrically connected with the first liquid level sensor (L1), and the third throttle valve (F3) is used for adjusting the opening degree in an inverse correlation manner because the liquid level of the rectifying tower (T1) is lower than the degree of the gas phase circulation port (T1-4).
  3. 3. The apparatus for purifying and purifying methanol as claimed in claim 1, wherein the methanol tank is buried.
  4. 4. The purification apparatus for removing impurities from a methanol as set forth in claim 1, wherein the two flow paths of the reboiler (E1) are respectively passed with low-pressure saturated steam and the desorption liquid, and the reboiler (E1) heats the desorption liquid by the low-pressure saturated steam.
  5. 5. The analytical liquid methanol impurity removal and purification device according to claim 1, wherein the reflux drum (V1) is provided with a second liquid level sensor (L2), the second throttle valve (F2) is electrically connected to the second liquid level sensor (L2), and the second throttle valve (F2) is used for positively adjusting the opening of the second throttle valve (F2) due to the feedback value of the second liquid level sensor (L2).
  6. 6. The purifying apparatus for removing impurities from the methanol in the analysis liquid according to any one of claims 1 to 5, further comprising a secondary preheater (E22), wherein the outlet (T1-3) of the column bottom is discharged through one flow passage of the secondary preheater (E22), and the other flow passage of the secondary preheater (E22) supplies the analysis liquid to the feed inlet (T1-1).
  7. 7. The purifying apparatus for removing impurities from methanol as set forth in claim 6, wherein the gas phase outlet (T1-2) is configured to feed condensate to the first stage condenser (E31) through one of the flow paths of the first stage preheater (E21), and the other flow path of the first stage preheater (E21) is configured to feed the solution to the second stage preheater (E22).
  8. 8. The device for purifying the analytical liquid methanol according to any one of claims 1 to 5, wherein the rectifying tower (T1) is provided with an air pressure sensor (G1) for detecting an internal top pressure thereof, the reboiler (E1) is communicated with a steam source through a fourth throttle valve (F4), and the fourth throttle valve (F4) is used for inversely adjusting an opening of the fourth throttle valve (F4) due to the pressure detected by the air pressure sensor (G1).
  9. 9. The device for purifying the resolved methanol according to any one of claims 1 to 5, wherein a purge valve (B1) is communicated with the tower bottom liquid outlet (T1-3), the purge valve (B1) is used for evacuating the rectifying tower (T1) and the reboiler (E1), and the primary condenser (E31) and the reflux drum (V1) are used for evacuating the rectifying tower (T1).

Description

Purifying device for removing impurities from methanol of analytical liquid Technical Field The utility model relates to recycling of methanol wastewater, in particular to a purifying device for removing impurities from analytic liquid methanol. Background In the production process of 2-ethyl anthraquinone, fuming sulfuric acid is used as a catalyst, 15 tons of waste sulfuric acid can be produced per 1 ton of 2-ethyl anthraquinone, and the waste sulfuric acid contains more tar and other colored organic impurities, and most of the colored organic impurities comprise anthraquinone derivatives, polycyclic aromatic hydrocarbon and resin. In order to protect the environment and improve the efficiency and reduce the cost, resin adsorption (decoloration treatment) is needed to be carried out on the waste sulfuric acid, the waste sulfuric acid which is precipitated and filtered by the resin adsorption column is absorbed organically, the colored organic impurities are attached in the resin adsorption column, and the resin adsorption column discharges qualified sulfuric acid. Therefore, there are cases where a large amount of methanol is required for the analysis and regeneration of the resin adsorption column, and then a large amount of analysis liquid (which is methanol wastewater) is derived. The thin resolving liquid is used for resolving and regenerating the resin adsorption column to a certain degree, however, the decolorization of the resin adsorption column is still not ideal, and the production quality of the elbow is improved. The analysis liquid is discharged, so that the environment is greatly influenced. Disclosure of utility model The utility model aims to at least solve one of the technical problems, and provides a purifying device for removing impurities from the methanol of the analysis liquid, which improves the quality of the recovered liquid of the methanol and realizes recycling. In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: The utility model provides an analytic liquid methyl alcohol edulcoration purification device, includes rectifying column, reboiler and reflux drum, the rectifying column is provided with feed inlet, gaseous phase export, tower cauldron liquid outlet, be less than the gaseous phase circulation mouth of feed inlet, be less than gaseous phase export and be higher than the return port of feed inlet, the feed inlet and the liquid outlet of reboiler communicate respectively the tower cauldron liquid outlet with gaseous phase circulation mouth, the reboiler is used for extracting the analytic liquid of rectifying column and heats it, the reboiler is used for passing through gaseous phase circulation mouth is gone towards the rectifying column gushes out the liquid material of steam, the feed inlet of reflux drum communicates through the one-level condenser the gaseous phase export, the reflux drum is used for providing the distilled sample, the distribution mouth of reflux drum is used for communicating respectively through first choke and second choke, intercommunication respectively return port and methanol drum. Compared with the prior art, the method has the beneficial effects that the analysis liquid is recycled, the environment is protected, compared with the total elimination cost of the analysis liquid and the cost of a large amount of analysis materials, the method mainly only has the heat supply cost when the analysis liquid is reused, the enterprise cost is reduced, in addition, the methanol purity is better, the methanol is recycled with high quality, and the analysis and the regeneration of the resin adsorption column are effectively ensured. As the improvement of the technical scheme, the rectifying tower is provided with a first liquid level sensor, a tower kettle discharge pump communicated with a tower kettle liquid outlet is used for discharging waste through a third throttle valve, the third throttle valve is electrically connected with the first liquid level sensor, and the third throttle valve is used for adjusting the opening degree in an opposite-correlation mode because the liquid level of the rectifying tower is lower than the degree of a gas phase circulation port. As an improvement of the technical scheme, the methanol tank is buried. As an improvement of the technical scheme, the two flow channels of the reboiler respectively circulate low-pressure saturated steam and desorption liquid, and the reboiler heats the desorption liquid through the low-pressure saturated steam. As an improvement of the technical scheme, the reflux tank is provided with a second liquid level sensor, the second throttle valve is electrically connected with the second liquid level sensor, and the second throttle valve is used for adjusting the opening degree of the second throttle valve in a positive correlation mode because of the feedback value of the second liquid level sensor. As an improvement of the technical scheme,