Cleaning method for sticky wall of high pressure polyethylene tubular reactor
A tubular reactor, high-pressure polyethylene technology, applied in cleaning methods and utensils, chemical instruments and methods, cleaning hollow objects, etc., can solve the problems of difficult cleaning of high molecular polymers, and achieve the effect of solving difficult cleaning.
Active Publication Date: 2016-04-27
CHNA ENERGY INVESTMENT CORP LTD +1
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Problems solved by technology
[0007] The present invention aims to provide a method for cleaning the sticky wall of a high-pressure polyethylene tubular reactor to solve the problem that the high-molecular polymer adhered to the high-pressure polyethylene tubular reactor in the prior art is difficult to clean
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[0018] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims.
[0019] The invention provides a method for cleaning the sticky wall of a high-pressure polyethylene tubular reactor, please refer to figure 1 The method comprises: feeding solvent oil into a reaction tube of a high-pressure polyethylene tubular reactor; heating the solvent oil in the reaction tube to a predetermined dissolution temperature and maintaining it for a predetermined time; discharging the solvent oil in the reaction tube.
[0020] In the present invention, the solvent oil is passed into the reaction tube of the high-pressure polyethylene tubular reactor, the solvent oil is heated to a predetermined temperature and maintained for a predetermined time, so that the high molecular polymer adhered to the inner wall of the reaction tube can be d...
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The invention provides a method for cleaning a sticky wall of a high pressure polyethylene tubular reactor. The method comprises the steps that solvent oil is added into a reaction pipe of the high pressure polyethylene tubular reactor; the solvent oil in the reaction pipe is heated to be at a preset solution temperature and maintained for a preset time period; the solvent oil in the reaction pipe is drained out. According to the method, the solvent oil is added into the reaction pipe of the high pressure polyethylene tubular reactor, the solvent oil in the reaction pipe is heated to be at the preset solution temperature and maintained for the preset time period, so that high-molecular polymers bonded on the inner wall of the reaction pipe are dissolved in the solvent oil, and finally the high-molecular polymers are drained out along with the solvent oil. The method conveniently solves the problem that the sticky wall of the high pressure polyethylene tubular reactor is difficult to clean.
Description
technical field [0001] The invention relates to a high-pressure polyethylene tubular reactor, and more particularly, to a method for cleaning the sticky wall of a high-pressure polyethylene tubular reactor. Background technique [0002] Polymers with relatively high molecular weight will be produced during the polymerization reaction. Because these polymers have high molecular weight and poor fluidity, they are easy to stick to the inner wall of the reaction tube of the high-pressure polyethylene tubular reactor. If the wall sticking is serious, it will not only reduce the production efficiency of the high-pressure polyethylene tubular reactor, but also cause the heat exchange efficiency of the reaction tube to drop sharply, so that the reaction heat cannot be removed in time, and the reaction temperature will rise sharply. Thereby increasing the probability of thermal decomposition. [0003] In addition, the sticky wall material is essentially a high-molecular-weight polye...
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IPC IPC(8): B08B9/08
CPCB08B9/027
Inventor 王会伦邓方文
Owner CHNA ENERGY INVESTMENT CORP LTD