Purification rectifying tower and purification method for 3-methyl-3-butene-1-alcohol

A rectification tower and butene technology, which is applied in the field of purification methods and devices, can solve problems such as equipment blockage, yield drop, and solvent pyrolysis, and achieve the effects of inhibiting self-polymerization, simple structure, and reducing decomposition loss

Inactive Publication Date: 2018-08-10
SHANDONG CHENGTAI CHEM IND
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Since olefins enter the bottom of the rectification tower with the solvent, and the temperature at the bottom of the tower is often high, it is easy to cause problems such as yield drop and equipmen

Method used

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  • Purification rectifying tower and purification method for 3-methyl-3-butene-1-alcohol

Examples

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Example Embodiment

[0024] Examples, such as figure 1 As shown, a purification and rectification tower for 3-methyl-3-buten-1-ol includes a rectification tower body 16, the middle of the rectification tower body 16 has a raw material inlet 5, and the rectification tower A solvent inlet 3 is provided on the tower body 16 near the top of the tower, and a solvent heater 2 is connected to the solvent inlet 3 through a pipe. The bottom of the rectification tower body 16 is provided with a bottom pipe, and the bottom pipe is connected with a kettle. The liquid pump 14, the bottom of the rectification tower body 16 is provided with a gas phase inlet 13, and the bottom pipe of the rectification tower body 16 is also connected to a bottom heater 12, and one end of the bottom heater 12 is connected to the bottom pipe , The other end of the bottom heater 12 is connected to the gas phase inlet 13, the top of the rectification tower body 16 has a reflux liquid inlet 9, and the top of the rectification tower bo...

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Abstract

The invention discloses a purification rectifying tower and purification method for 3-methyl-3-butene-1-alcohol. The purification rectifying tower comprises a rectifying tower body, wherein a raw material inlet is formed in the middle part of the rectifying tower body; a solvent inlet is formed in a position, near the tower top, on the rectifying tower body; a solvent heater is connected onto thesolvent inlet through a pipeline; a tower bottom pipeline is arranged at the tower bottom of the rectifying tower body; a kettle liquid pump is connected onto the tower bottom pipeline; a gas phase inlet is formed in the bottom of the rectifying tower body; a tower bottom heater is also connected onto the tower bottom pipeline of the rectifying tower body; one end of the tower bottom heater is connected with the tower bottom pipeline; the other end of the tower bottom heater is connected with the gas phase inlet. The purification tower adopting the scheme is simple in structure. The purification method has the advantages that the inhibition on the self aggregation of the 3-methyl-3-butene-1-alcohol is facilitated; the decomposition loss of solvent is favorably reduced during the long-period production; the mutual solubility of a separation system and the solvent is favorably enhanced; the separation efficiency of gradual operation is improved; the yield of the 3-methyl-3-butene-1-alcohol can reach 99.99 percent.

Description

technical field [0001] The invention relates to a purification method and device, in particular to a purification and rectification tower for 3-methyl-3-buten-1-ol and a purification method. Background technique [0002] 3-Methyl-3-buten-1-ol is a water reducer intermediate, which can further synthesize isopentenol (3-methyl-2-butene-1- alcohol). During hydroisomerization, in addition to mainly obtaining prenol, part of 3-methyl-3-buten-1-ol will be converted into isoamyl alcohol. In order to obtain a higher yield of isopentenol, it is necessary to separate 3-methyl-3-buten-1-ol from isopentenol in production. Since the boiling points of 3-methyl-3-buten-1-ol and isoamyl alcohol are very close, it is difficult to achieve the ideal separation effect by conventional separation means, and an effective separation method needs to be developed. [0003] The traditional method for separating alkanes and olefins mixtures can be extractive distillation, usually using strong polar ...

Claims

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Application Information

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IPC IPC(8): C07C33/025C07C29/84B01D3/14
CPCC07C29/84B01D3/14C07C33/025
Inventor 韩海滨肖溪修张国华王杰兴
Owner SHANDONG CHENGTAI CHEM IND
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