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After the successful application of the PTA dryer developed by the National Technology Drying Center on the 325,000 tons/year PTA plant of Sinopec Luoyang Branch, they continued to explore the CTA/PTA (crude terephthalic acid/fine terephthalic acid) drying theory. Industrial tests, verifying the perfect CTA/PTA drying mathematical model, and mastering the key technologies of CTA/PTA drying process and equipment design. In 2007, they took over the production of 600,000 tons/year PTA unit CTA/PTA dryer from Jialong Chemical Fiber Co., Ltd.
In February 2008, the center also signed a contract for the development and development of a CTA/PTA dryer for the 1 million tons/year PTA project of Sinopec Yizheng Chemical Fiber. Yizheng Chemical Fiber 1 million tons/year PTA project adopts the technology of independent intellectual property rights in China. The supporting CTA/PTA dryer is also the largest steam tube rotary dryer independently developed in China. The dryer will be in March 2009. Delivery installation.
Coking coal conditioning is a upgrading and consumption reduction technology. The heat of the furnace is dried by heat exchange, and the moisture of the coal is reduced from 10% to 6%, thereby reducing the coke heat loss and coke quality. Purpose, this technology guarantees the continuous stability of coke oven production. The steam tube rotary drying method of coal conditioning technology developed by the National Drying Center uses low-pressure steam generated by dry quenching steam as a heat source, and performs indirect heat exchange with the wet coal through a high-efficiency steam tube rotary dryer to support the dust recovery and treatment system. This technology has been promoted and applied in the coke oven coal humidity control equipment of Baoshan Iron and Steel Co., Ltd., Shanxi Huijin Stainless Steel Co., Ltd. and Panzhihua Iron and Steel Co., Ltd. with its remarkable energy saving, environmental protection and economic benefits.
In January 2008, Baoshan Iron and Steel Group Co., Ltd. 330 tons / hour coal humidity control system project was put into the field installation and construction stage, the main equipment dryer is expected to be put into operation in August 2008, after the production will reduce the coke oven fuel consumption by about 2 ~ 3 Kg / ton. Shanxi Huijin Stainless Steel Co., Ltd. coke oven 400 tons / hour coal humidity control device has entered the equipment assembly stage, is expected to be put into the field installation and commissioning in March 2008. After the coal moisture control device constructed by Taiyuan Iron and Steel Co., Ltd. is put into operation, it is expected to save 30% of coke oven fuel and 30% to 40% of coking wastewater. The 350 ton/hour humidity control unit of the Coke Oven Reconstruction Project of Panzhihua Iron and Steel Co., Ltd. is also under design. The main equipment dryer is expected to be delivered in October 2008.
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Relying on the National Drying Technology and Equipment Engineering Technology Research Center established by Tianhua Chemical Machinery and Automation Research and Design Institute, since the official approval of the Ministry of Science and Technology in November last year, the engineering technology development task has been fully carried out, relying on large-scale projects based on national key projects. The development of drying technology and equipment localization has achieved gratifying results: the coke oven coal humidity control device in the steel industry and the million tons of PTA (fine terephthalic acid) drying technology and equipment in the petrochemical industry have reached the advanced level of the current international similar technology.