Technical method for preparing antidrag polymer reacted by fractional packs
A polymer, small packaging technology, used in general chemical methods, pipeline systems, and petroleum industry fields, which can solve the problems of complicated operation box, poor sealing, damage and air leakage, etc.
Active Publication Date: 2009-07-15
PIPECHINA SOUTH CHINA CO
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Problems solved by technology
The use of the operation box here is very complicated. First, the air in it is evacuated by a vacuum pump, and then nitrogen is filled therein. In order to meet the strict requirements of the Ziegler-Natta system catalyst for the reaction environment, the above process is often To repeat 3 to 5 times, it is time-consuming and labor-intensive and needs to consume a large amount of nitrogen. Even so, the implementation of the polymerization reaction is often interrupted due to poor sealing or damage to some parts of the operation box. At the same time, the polymerization reaction product Instable performance also happens from time to time
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[0008] Embodiment. Polymerization reaction vessel 4 is made of multi-layer composite polyethylene material. In order to increase the heat release area, the shape of reaction vessel 4 can be designed as a flat type, and there is a prominent air inlet 2 that is convenient to realize good sealing. And feed inlet 1, air inlet 2 connect a slender cylindrical air intake pipe 3 of the same material in the reaction vessel 4, and one end of the cylindrical air intake pipe 3 is close to the bottom of the reaction vessel 4, and the other end can be connected to a glass three connected to the nitrogen cylinder. end of the tube. Place the reaction vessel 4 in a desiccator to dry, connect the air inlet 2 to one end of the glass tee pipe, and connect the other two ends of the glass tee pipe to the outlet of the nitrogen cylinder and the latex pipe respectively, open the nitrogen cylinder, and fill the tee pipe with Nitrogen, use clamps to clamp the latex tube connected to the three-way pipe....
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A method for preparing a drag-reducing polymer in a small package reaction, which is to connect one end of a three-way pipe connected to a nitrogen cylinder and filled with nitrogen with the outer end of the air inlet (2) of the reaction vessel (4) at normal temperature, and the other end Sealed, nitrogen is sent in from the air inlet (2) extending into the bottom of the reaction vessel (4), and is continuously discharged from the feeding port (1) of the reaction container (4); the purified polymerized monomer is fed through the feeding port (1) Put into the reaction vessel (4), keep the nitrogen environment in the feeding port (1); quickly seal the feeding port (1) after adding the catalyst through the feeding port (1) into the reaction container (4), and seal the air inlet of the reaction container at the same time [2], open the sealed end of the three-way pipe, and then place the sealed reaction vessel (4) in a low-temperature reaction environment that meets the requirements. The method can conveniently solve many problems existing in the process of synthesizing the drag-reducing polymer by using an operation box, and the method is simple, safe and efficient.
Description
technical field [0001] The invention relates to a simple and efficient preparation process of a drag-reducing polymer for a drag-reducing agent used in oil exploitation and pipeline transportation, and relates to the technical fields of the petroleum industry, general chemical methods and pipeline systems. Background technique [0002] In the process of oil extraction, it is necessary to overcome the frictional resistance of the oil pipe from the bottom of the well to the ground gathering and transportation pipeline. Sometimes due to the low temperature in the oil pipe and the increase of the viscosity of the crude oil, the hydraulic pressure of the formation cannot provide enough power for the oil in the oil pipe to flow to the ground; In the process of pipeline transportation of petroleum and refined oil, there is also the need to reduce pipeline pressure or increase pipeline displacement. The production and application of drag reducers effectively solve the above productio...
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IPC IPC(8): C08F10/00C09K8/52F17D1/17
Inventor 关中原税碧垣
Owner PIPECHINA SOUTH CHINA CO