Light benzol producing process in four serially connected towers
A production process and technology of light benzene, which is applied in the purification/separation of hydrocarbons, hydrocarbons, chemical instruments and methods, etc., can solve the problems of failing to achieve energy saving and consumption reduction, complex process routes, and various equipment, and achieve product quality. Stable, less investment, quick effect
Inactive Publication Date: 2005-11-09
COKING PLANT OF INNER MONGOLIA BAOTOU STEEL UNIONCO
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Problems solved by technology
[0002] At present, the rectification process for recovering light benzene in domestic large-scale coking plants generally adopts the traditional pickling rectification production process, that is, the production process of benzene tower-toluene tower-dimethyl tower-three towers with hot oil, and the blowing before the benzene tower The benzene tower and the benzene tower are operated independently. This traditional production process has the following shortcomings. First, the process route is complicated and the equipment is numerous; second, it fails to meet the requirements of energy saving and consumption reduction, and the energy consumption is high
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[0010] Lead the top steam from the top of the benzene blowing tower to the 16th, 17th or 18th floor tray manhole on the benzene tower or the manhole closest to the 17th floor tray, the pipe diameter remains the original benzene blowing tower top The diameter of the outlet gas pipe and the benzene blowing tower are based on the original preheater, and a new preheater of the same type is newly installed, and the two are connected in parallel. The other one is used, the process parameters of the four towers keep the original process parameter values unchanged, especially the reflux ratio of the benzene tower (about 1.5) does not need to be increased, and the liquid level is not lower than the bottom liquid when the benzene blowing tower discharges residual oil 3 / 4 of the surface.
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The present invention belongs to the field of refining hydrocarbon mixture, and is especially light benzol producing process producing process in four serially connected towers. Four towers including benzol blowing tower, benzol tower, toluene tower and xylene tower are connected without storage tank in tetween. The production process has reduced benzol tower heater load, stable production process, stable product quality, low power consumption and simplified apparatus. The production process is one ideal production process in large coke plant.
Description
1. Technical field: [0001] The invention belongs to the refining field of mixtures mainly containing hydrocarbons, and in particular relates to a production process for processing light benzene with four towers in series. 2. Background technology: [0002] At present, the rectification process for recovering light benzene in domestic large-scale coking plants generally adopts the traditional pickling rectification production process, that is, the production process of benzene tower-toluene tower-dimethyl tower-three towers with hot oil, and the blowing before the benzene tower The benzene tower and the benzene tower are operated independently. This traditional production process has the following shortcomings. First, the process route is complicated and the equipment is various; 3. Contents of the invention: [0003] The object of the invention is to adopt a kind of production technology of four towers in series processing light benzene that do not have storage tank in the...
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IPC IPC(8): C07C7/00C07C15/02
Inventor 王永贵程福生金蝶翔王永红张景婷王柏春程红夏添虹
Owner COKING PLANT OF INNER MONGOLIA BAOTOU STEEL UNIONCO