A detachable rectification tower side line gas phase extraction device
A technology for gas phase extraction and rectification tower, which is applied in the field of detachable rectification tower side-line gas phase extraction devices, can solve the problems of difficult installation, high investment cost, complex structure and the like, and achieves convenient disassembly and assembly and easy manufacturing. , good effect
Inactive Publication Date: 2016-06-29
GUANGXI FANGCHENGGANG MINGLIANG CHANGFU PETROCHEM TECH CO LTD +1
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Problems solved by technology
The opening for gas phase extraction is generally opened in the gas phase area between the upper and lower trays. If there are no other components in the tower, the leakage and wall flow of the upper tray will also be extracted from the opening, and the accuracy of gas phase extraction cannot be guaranteed.
For the method of rectifying column side line extraction, many studies have been carried out in China, CN200720043425.6 discloses a side line discharge collector suitable for liquid extraction; CN200820034292.0 discloses the combination of side line discharge and partial reflux distribution Device; 201110007603.0 announced a controllable side line discharge combination device. This method is reliable for gas phase recovery, but the structure is complex, requires professional design, and installation is difficult. It affects the operation in the tower during maintenance, and the investment cost is high.
Method used
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Embodiment 1
[0020] Example 1: The MTBE desulfurization process of a factory, the MTBE product is extracted from the side line of the catalytic distillation tower, and the total sulfur content is above 20ppm, which cannot meet the national V gasoline standard. Below 10ppm, meeting the National V gasoline standard.
Embodiment 2
[0021] Example 2: In a certain acetate factory, the acid content of acetate in the product refining tower is above 0.005%, which cannot meet the requirements. After the modification of the side line gas phase extraction outlet, the acid content in the product is less than 0.005%, which meets the quality requirements.
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The invention relates to a detachable type side gas-phase extraction device for a rectifying column. The detachable type side gas-phase extraction device comprises a side opening and an inner container tube, wherein the side opening is a gas-phase region between two adjacent tower plates of the rectifying column; the opening direction of the side opening is perpendicular to tower plate runners; the side opening is formed by welding a steel tube and a flange; the inner container tube is formed by welding the steel tube and the flange; the steel tube is 700 mm to 1000 mm long, and a 45-degree cutting groove is formed in one end of the steel tube; the inner container tube is inserted into the side opening; the 45-degree groove is downwards assembled; and the side opening, the inner container tube and the outer tube are connected and sealed through the flange. The device is simple to manufacture and convenient to dismount, and has the functions of allowing gas-phase extraction and blocking liquid-phase extraction under a working state.
Description
technical field [0001] The invention relates to a detachable side line gas phase extraction device of a rectification tower, in particular a detachable inner bile pipe is installed on the tower wall of the side line extraction outlet. Background technique [0002] Distillation tower is the main equipment for material separation in oil refining and chemical industry. It separates and purifies different components by using the difference in boiling point of the material. When only two components need to be separated and purified, the general rectification column can achieve the purpose of separation without the need for side line openings. When there are multiple boiling point components that need to be separated, multiple rectification towers are generally used for multi-stage separation and purification. This method has good reliability, but the equipment investment and operating costs are high. In order to reduce investment and operating costs, multi-tower separation is us...
Claims
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IPC IPC(8): B01D3/32
Inventor 肖长根石海信谭良谋肖远财
Owner GUANGXI FANGCHENGGANG MINGLIANG CHANGFU PETROCHEM TECH CO LTD