Nanjing Chemical Industry Co., Ltd. made breakthrough progress by using clean technology to produce rubber chemicals. In July, Nanhua's RT production exceeded the dry ton mark, and the anti-aging agent RD output reached more than 1900 tons, both of which were the highest in history.
RT bass is an intermediate used in the production of rubber antioxidants. In the resource optimization project of South Chemicals, the RT bass device is the key device for connecting nitrochlorobenzene and antioxidants. The stable production of the device not only determines the capacity of the rubber antioxidant 4020/4010NA devices, but also affects the entire resources. Key factors for optimizing project effectiveness. There are a variety of processes for producing RT bass using p-nitrochlorobenzene as a raw material.
In the past, Nanhua Chemical Factory used RT to produce the sulfuric acid reduction method. The process is mature and the cost is low. However, the technology is relatively backward, and the environmental pressure is relatively high. In 2002, the new 10,000 tonne/year hydrogen RT RT bass plant with environmentally friendly advantages was tested. Despite overcoming difficulties, the plant was forced to stop production due to high load and high cost. In 2005, the resource optimization project entered the design optimization stage. After repeated studies, the company decided to completely abandon the sulfuric alkali reduction method and use the hydrogen reduction method to reduce "three wastes" from the source.
Nanhua company carefully deployed, on the one hand, the chemical plant pays close attention to the re-production and transformation of the hydrogenation KT bass production equipment and the process conditions, and solves various problems existing in the convergence with the downstream products, and implements effective technologies for driving the new plant. Reserves; On the one hand, with reference to advanced environmental protection technologies, continuous optimization of design, efforts to achieve a new starting point for the reduction of new devices.
In September last year, the newly-built hydrogenation reactor for the core equipment of the 15,000-ton/year RT unit was partially domesticated, and the integrated utilization process of acidified “three wastes†was added, and the equipment used in the heat-conducting oil system was able to make good use of the old equipment. New tower and relocation equipment share a tower system. Although the new installation process opened up and produced the first batch of qualified products, due to the need to further explore the process operation, combined with the serious snow and ice disasters at the beginning of this year, it has brought difficulties to the stable production of the device.
In March of this year , Nanhua Company established the Leading Group for Rubber Auxiliary Production in a timely manner. The deputy general manager of the company was the head of the company and presided over the production coordination meeting every day to focus on the company's superior resources to solve various problems encountered in the production of new devices. The company’s leadership has been deeply involved in the installation of the equipment several times to encourage employees to strengthen their confidence, remove all difficulties, and open and stabilize the device. The Ministry of Rubber Chemicals focused on the specification of process operations, opened up the bottleneck in the distillation section, and promoted stable production of the device. In July, the highest daily production capacity of the device reached 45 tons, laying the foundation for the next standard of equipment.
At the same time, Nanhua Company has its own intellectual property rights and rubber anti-aging agent RD products adopting clean production technology . Through the efforts of the employees in the operation department, the new equipment and new technologies are digested, absorbed and technologically innovative, and the steady production and load increase are achieved rapidly. According to Hong Qingjun, director of the Department of Rubber Chemicals at Nanhua, the device will be fully loaded in the fourth quarter of this year.
Nanhua Chemical Co., Ltd. is the vanguard of the domestic rubber auxiliaries industry. It has made breakthroughs in cleaner production of rubber auxiliaries and has made positive contributions to promoting cleaner production in the industry.
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