Rectified light component and heavy component liquid-liquid separator and separation method

A liquid separator and light component technology, applied in separation methods, chemical instruments and methods, immiscible liquid separation, etc., can solve problems that weaken market competitiveness, affect production operation and product quality, and save valuable space , Conducive to management and maintenance, low investment effect

Pending Publication Date: 2020-01-21
恒力石化(大连)炼化有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in the production reaction device of low-pressure carbonylated acetic acid, methyl iodide additive, water, and methyl acetate enter the rectification system and are separated through an empty cylinder liquid-liquid separator, and return to the former system to participate in the reaction. With the increase of methanol feeding , the separation effect gradually declines, affecting production operation and product quality, thereby weakening market competitiveness

Method used

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  • Rectified light component and heavy component liquid-liquid separator and separation method

Examples

Experimental program
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Effect test

Embodiment 1

[0019] A kind of acetic acid rectification light component and heavy component liquid-liquid separator, such as figure 1 As shown, the liquid-liquid separator includes a heavy component and light component mixed liquid inlet 1, a liquid distribution plate 6, a wire mesh corrugated packing 7, an exhaust port 4, a water-in-water cylinder 10, a heavy component outlet 2, an overflow Flow baffle 9, light component outlet 3, pressure gauge 5, thermometer 8;

[0020] The liquid distribution plate 6, the wire mesh corrugated packing 7 and the overflow baffle 9 are arranged in the liquid-liquid separator;

[0021] 268 holes are evenly distributed on the liquid distribution plate 6;

[0022] The heavy component and light component mixed liquid inlet 1 of the liquid-liquid separator and the liquid distribution plate 6 are arranged on one side of the wire mesh corrugated packing 7, and the liquid distribution plate 6 is located in the heavy component and light component mixed liquid Bet...

Embodiment 2

[0028] A liquid-liquid separation method of acetic acid rectification light components and heavy components using the liquid-liquid separator described in Example 1, the method is: the material enters the liquid-liquid through the heavy component and light component mixed liquid inlet 1 The separator uses the liquid distribution plate 6 to break the turbulent state of the mixed liquid, making the flow state of the mixed liquid more stable. At this time, the mixed liquid enters the wire mesh corrugated packing 7 for liquid-gas collision separation. The mesh corrugated packing 7 undergoes rebound separation, so that a small amount of gas contained in the liquid gradually moves up and is discharged from the exhaust port 4. At the same time, the light components and heavy components are further separated in the wire mesh corrugated packing 7 to meet the separation requirements. The component enters the water-in-water cylinder 10 and returns to the system from the heavy component ou...

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Abstract

The invention relates to a rectified light component and heavy component liquid-liquid separator and a separation method, and belongs to the field of acetic acid production devices. The liquid-liquidseparator comprises a liquid distribution disc, a wire mesh corrugated filler and a water drum barrel, wherein a liquid distribution disc, a wire mesh corrugated packing and an overflow baffle are arranged in the liquid-liquid separator; a heavy component and light component mixed liquid inlet and a liquid distribution disc are arranged on one side of the wire mesh corrugated packing, and a liquiddistribution disc is located between the heavy component and light component mixed liquid inlet and the wire mesh corrugated packing; an exhaust port, the water drum barrel, the overflow baffle and the light component outlet are formed in the other side of the wire mesh corrugated packing; the exhaust port is formed in the top of the liquid-liquid separator, the water drum barrel and the light component outlet are formed in the bottom of the liquid-liquid separator, the overflow baffle is located between the water drum barrel and the light component outlet, and the water drum barrel is located between the overflow baffle and the silk screen corrugated packing; a heavy component outlet is formed in the bottom of the water drum barrel.

Description

technical field [0001] The invention relates to a rectification light component and heavy component liquid-liquid separator and a separation method, belonging to the field of acetic acid production equipment. Background technique [0002] As an important organic chemical raw material, acetic acid is mainly used in the production of vinyl acetate, acetates, cellulose acetate, polyvinyl alcohol, etc.; at the same time, as a solvent for the production of PTA in the polyester industry, the annual consumption is very large. According to the different synthetic raw materials and catalyst types, there are many kinds of acetic acid synthesis processes. Methanol carbonylation to acetic acid is a relatively advanced method in the world today. This method was first successfully developed by the German BASF company. In 1968, based on the research of BASF, Mosanto Company of the United States successfully developed the methanol low-pressure carbonylation technology with relatively mild ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D17/02B01D19/00C07C51/44C07C53/08
CPCB01D17/02B01D19/0073C07C51/44C07C53/08
Inventor 刘伟李志龙王冲穆树林王争光郑国权
Owner 恒力石化(大连)炼化有限公司
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