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Tetrachloroethylene deoxidization and dehydration equipment

A dehydration equipment, tetrachloroethylene technology, applied in the preparation of halogenated hydrocarbons, ion exchange, organic chemistry, etc., can solve problems such as poor performance of tetrachloroethylene, and achieve the effect of good color and simple operation

Active Publication Date: 2014-02-05
李通
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The problem to be solved by the present invention is to provide a kind of perchlorethylene deoxygenation and dehydration equipment for the above deficiencies, which overcomes the defect of poor performance of tetrachlorethylene produced in the prior art, and after adopting the technical scheme of the present invention, can reduce four The moisture in the chloroethylene and the increase of the pH value of the tetrachlorethylene, the moisture is reduced by 60-80ppm, and the pH value is increased by about 4, which fully meets the quality requirements for configuring high-end tetrachlorethylene cleaning agents

Method used

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  • Tetrachloroethylene deoxidization and dehydration equipment
  • Tetrachloroethylene deoxidization and dehydration equipment
  • Tetrachloroethylene deoxidization and dehydration equipment

Examples

Experimental program
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Effect test

Embodiment 1

[0044] A perchlorethylene deoxygenation and dehydration process comprises the following steps:

[0045] (1) Send the perchlorethylene to be prepared into the raw material tank V101, and the detection and laboratory indicators include chromaticity, purity, moisture, and pH value;

[0046](2) According to the test results, use 5A molecular sieve when the moisture is 70-80 ppm, use 4A molecular sieve when the moisture is 60-70ppm, and use 3A molecular sieve when the moisture is 50-60ppm; when the pH value is 2-3, use about 3mm alkaline carbon to deoxidize When the pH value is 3-4, use about 4mm alkaline carbon oxygen scavenger, and when the pH value is 4-5, use about 5mm alkaline carbon oxygen scavenger; if the moisture is 70-80ppm, when the pH is 2-3, The mass ratio of oxygen scavenger to molecular sieve is 1: 9.5; in other cases, the mass ratio of oxygen scavenger to molecular sieve is 1: 10;

[0047] (3) Start the feed pump P101A, send tetrachlorethylene into the deoxygenatio...

Embodiment 2

[0056] Such as figure 1 and 2 Shown, a kind of equipment that is used for the perchlorethylene deoxygenation drying process of above-mentioned embodiment 1, comprises the feed pump 101 that communicates successively, deoxygenation drying tower 102, filter 103 and finished product tank 104;

[0057] Described deoxygenation drying tower comprises tower body 13, and the upper and lower ends of described tower body 13 are respectively provided with upper head 4 and lower head 16; Described tower body 13 is divided into upper, middle and lower three sections, each Sections were filled with basic filler basic carbon and molecular sieve Al 2 o 3 , layered in a ratio of 4:3; the bottom and middle of the tower body 13 are respectively provided with filler support grids, and the upper tower body 6 is provided with an alkaline filler baffle 7 and a molecular sieve filler baffle 8, and the upper layer Fill the basic packing, and the molecular sieve packing in the lower layer; the packi...

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Abstract

The invention discloses tetrachloroethylene deoxidization and dehydration equipment. The equipment comprises a feed pump, a deoxidization drying tower, filters and a finished product tank, which are sequentially communicated, wherein the deoxidization drying tower comprises a tower body, and an end enclosure is arranged at each of the upper and lower ends of the tower body; the tower body is divided into an upper section, a middle section and a lower section, each of which is filled with an alkali filler and a molecular sieve; filler support grid plates are arranged on the lower and middle parts of the tower body respectively; stainless steel meshes are laid on the filler support grid plates; filler pressing plates are arranged on the upper parts of the fillers in the tower body; a feed port is formed in the central position of the upper end enclosure, and a discharge port is formed in the central position of the lower end enclosure; the filters I are arranged at the feed port and the discharge port, and a buffer plate is arranged at the feed port; a detachable distribution plate is arranged below the buffer plate; flow baffle plates are arranged below the filler support grid plates. According to the equipment, water in tetrachloroethylene is reduced, the PH value of tetrachloroethylene is increased, influence on the purity of tetrachloroethylene is avoided, and high chromaticity is ensured; a closed circulation mode is adopted for a system, waste residues and wastewater are avoided, and the equipment is easy to operate, safe and reliable.

Description

[0001] This application is a divisional application with application number 2012100067182, application date January 11, 2012, and invention name "a process and equipment for oxygen removal and dehydration of tetrachlorethylene". technical field [0002] The invention relates to a deoxygenation and dehydration equipment, in particular to a perchlorethylene deoxygenation and dehydration equipment, which belongs to the field of perchlorethylene treatment. Background technique [0003] In the production process of tetrachlorethylene cleaning agent, deoxygenation and dehydration treatment is a problem that plagues the tetrachlorethylene cleaning agent industry. The volume fractions of the main components in the raw materials for tetrachlorethylene production are, respectively, dichloroethane 0.00001%, trichloro Ethylene 0.00114%, trichloroethane 0.00003%, tetrachloroethane 0.00005%, pentachloroethane 0.00002, tetrachloroethylene 99.99%, moisture 0.0045%, acidity 0.0005%, PH=4.5, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C21/12C07C17/38C07C17/389B01D15/08
Inventor 李通杨秀玲苗乃芬常炳恩
Owner 李通
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