P-benzoquinone stripping tower without tower tray and packing
A technology of para-benzoquinone and stripper, which is applied in steam distillation, quinone separation/purification, organic chemistry, etc., can solve the problems of high mud content in the stripper, affecting production efficiency, complicated impurity removal process, etc. The effect of operating cost, simple structure and less dead space of stripping
Inactive Publication Date: 2014-01-01
XIANTAO CITY KANGHUA TECH
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Problems solved by technology
[0004] The object of the present invention is to provide a desilting device at the top of a p-benzoquinone stripper to improve technical problems such as high mud content in the stripper, complicated impurity removal process, high cost of impurity removal, and impact on production efficiency when the existing equipment is in use.
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[0013] The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. figure 1 It is a structural schematic diagram of the present invention, figure 2 yes figure 1 top view of image 3 is a schematic diagram of a hollow cone nozzle, Figure 4 is a schematic diagram of a dual-material nozzle, Figure 5 is a schematic diagram of a solid cone nozzle.
[0014] As can be seen from the figure, the p-benzoquinone stripping tower without trays and fillers has a top feed pipe 11, a middle feed pipe 12 and a bottom feed pipe 13 respectively at the top, middle and bottom of the tower body 1. , all feed pipes extend into the tower. Each feeding pipe is provided with a plurality of distribution branch pipes 3, and the bottoms of the feeding pipes 11, 12, 13 and distribution branch pipes 3 are provided with evenly distributed nozzles. The nozzle on the top feed pipe 11 is a hollow cone...
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The invention relates to a p-benzoquinone stripping tower without a tower tray and packing. The p-benzoquinone stripping tower comprises a tower body, wherein a top feed pipe, a middle feed pipe and a bottom feed pipe are respectively arranged at the upper part, middle part and lower part of the tower body, all the feed pipes extend into the tower body, a plurality of distribution branch pipes are arranged on the feed pipes positioned in the tower body, and spray nozzles which are uniformly distributed are arranged at the bottom parts of the feed pipes and the distribution branch pipes. The spray nozzles of the top feed pipe can enable mother liquor to form a spray mist, strike and intercept manganese mineral powder and other impurities rising along with steam, and wash attachments on the tower wall from top to bottom; the spray nozzles of the middle feed pipe can rapidly mix a reaction solution with the steam, form the solid conical spray mist under the drive of steam pressure, and realize the functions of heat transfer and stripping; the spray nozzles of the bottom feed pipe can perform stripping on the reaction solution in a declining process, so that the stripping effect is good, the washing frequency of parts in the tower can be greatly reduced, the production efficiency is improved, the operation cost is saved, and the economic benefits are great.
Description
technical field [0001] The invention relates to chemical equipment, in particular to a p-benzoquinone stripping tower without trays and fillers. Background technique [0002] Benzoquinone is a kind of quinone. Molecular formula C6H4O2, there are two kinds of o-benzoquinone and p-benzoquinone. P-benzoquinone is more important and can be used as dye and pharmaceutical intermediate, rubber anti-aging agent, polymerization inhibitor, antioxidant, developer, etc. [0003] The traditional production method of p-benzoquinone is the oxidation method, and the finished product of p-benzoquinone is prepared by stripping aniline oxidation solution with atmospheric pressure steam. When p-benzoquinone is prepared, a floating valve tower is usually used, and the number of trays is 10-15. Each layer has a dead corner with poor fluidity, and a large amount of manganese ore is mixed in the p-phenol reaction liquid sent to the stripping tower. These impurities will settle and accumulate in ...
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IPC IPC(8): B01D3/38C07C46/10C07C50/04
Inventor 潘德华
Owner XIANTAO CITY KANGHUA TECH