'We will start from improving the production and quality of new products this year, and fully promote the upgrade and innovation of polyolefin products and innovation and innovation.' The person in charge of the Zhenhai Refining and Chemical Industry Department said. Statistics show that the Ministry from January to July A total of 8 special materials and 16 new product grades were produced. The production quantity and quality were the highest in the calendar year, achieving the double improvement of the quality and output of new polyolefin products.
Eliminate the quality of special materials瑕疵
M2320, a high-melting index injection molding material produced by Zhenhai Refining & Polyethylene Plant, is mainly used for cable jackets. It has very high requirements on insulation performance. 'In the first half of this year, there was feedback from manufacturers that M2320 particles contained fine powder, which caused certain defects in the next step. Impact. 'Zhenhai Refining and Chemicals Polyethylene Plant Process Technology Organizer Zhong Shixiao told reporters.
For this quality, the technicians collected multiple sets of operating temperature data, and invited domestic pipeline transportation experts to the site for analysis and discussion. The reason for the lockout was due to the long distance of the conveyor belt of the device, and the long-term high-load transportation of the pipeline. The inner wall is flattened. The solution is to replace the elbow of the transfer line and add a technical safeguard at the end.
After the replacement of some elbows, the fine powder condition of the product was effectively improved. Zhenhai Refining and Chemical Co., Ltd. added electrostatic precipitator facilities in front of the packaging machine during the revision of the equipment inspection in June.
'From the current trial operation situation, the electrostatically dust-removed polyethylene product has a smooth appearance, no fine powder appears, and the product quality is improved. ' On August 5, Zhong Shixiao and his colleagues went to the packaging line to check the product packaging. Grab a handful of high-melting injection molding material M2320 granules that have just been opened for inspection. There is no case where the hands are covered with fine powder.
Depolymerization reactor long-distance problem
The high-crystalline polypropylene series M30RHC, M50RH and M60RHC produced by Zhenhai Refining and Chemical Co., Ltd. have been widely used in automotive modified materials. 'In the production of such copolymer products, the heat exchanger is always facing due to the blockage of the tube bundle and the decrease in production efficiency. The problem is that the traditional washing method has not been effective, resulting in unstable production load, which in turn affects the long-term operation of the copolymer reactor. 'When the second set of polypropylene plant technology in Zhenhai Refinery, Weng Xianhua said.
The Zhenhai Refining and Chemical Industry Department used the company's polyolefin research platform to carry out repeated trials and demonstrations on the above problems. Finally, the 360-degree rotating water gun was used to solve the heat exchanger cleaning problem, and the long-term operation record of the copolymerization unit was broken through 30 days. Time to make further breakthroughs is not a problem. ' Weng Xianhua said with confidence.
In addition, Zhenhai Refining and Chemical Industry Department also specializes in the special requirements of working conditions for special products, through copolymerization to produce anti-viscosity research, co-polyethylene content measurement and solidification, extruder high-melting index stable operation and other measures to continuously improve the quality of polypropylene products. Extending the operation cycle of the copolymer reactor, a complete set of production technology suitable for the device has been formed.
Upgrade non-woven special materials
'H30S, a non-woven special material for Zhenhai Refining and Chemical Production, has a very high recognition level in the East China market, and it has been exported to Southeast Asia several times last year. 'Zhanghai Refining & Chemical Business Planning Department's chemical product sales plan sponsored Zhang Ling said, 'but with the downstream The production equipment of the factory is updated. The production speed of H30S 350 meters per minute can no longer meet the requirements of new equipment. We must develop high-speed non-woven products.
On the basis of preliminary research and development, Zhenhai Refining & Chemical Department replaced the original catalyst with HR high-efficiency catalyst independently developed by Sinopec, and successfully upgraded H30S to N40V, a high-speed non-woven fabric. To ensure that the production process of new products is controllable, they The production process of the new product needs to change the catalyst system, and directly in the characteristics of the conversion of the raw fiber material, the organization and technical personnel have compiled a detailed production plan, successfully realized the non-transition product, and the undisturbed grade switch.
The new product N40V has a production speed of about 500 meters per minute. It has high production spinning rate, continuous silk and other performance advantages, and softness. It can be used to produce baby products, medical and health materials, etc.
The analysis results of Beijing Research Institute of Chemical Industry show that the key performance indicators of high-speed non-woven new product N40V have reached the expected target. Recently, the trial production of this product has been successful, and nearly 800 tons of new products will be put on the market one after another.