Shandong Lianmeng Chemical 40·60 Project Clean Production Technology Upgrade and Transformation Project

Thread Content

Project for the Upgrading of Clean Production Technologies in Shandong Lianmeng Chemical’s 40·60 Project / Author/Source: Shandong Lianmeng Chemical Group Co., Ltd. Date: 11-18-2020 Clicks: 1 1 Company Overview and Background of the Project Shandong Lianmeng Chemical Co., Ltd. (hereinafter referred to as “Lianmeng Chemical”) is located in the Houzhen Chemical Industry Park in Shouguang. It is a coal-based chemical enterprise that specializes in the production and sales of ammonia, urea, and methanol. The registered address is the Houzhen Project Area in Shouguang City (east of Fengdong Road, south of Fengnan Road). Lianmeng Chemical was originally founded as Shouguang County Fertilizer Factory in 1970 ； In 2002, it completed the transformation from a state-owned enterprise to a private one, becoming a private joint-stock company ； In 2005, a joint venture was established with Shanxi Jincheng Coal Industry Group, and after becoming a subsidiary of Jincheng Coal Group, this arrangement provided strong support for the healthy, sustainable, and rapid development of Lianmeng Chemical. In December 2011, Lianmeng Chemical implemented a strategy of moving from urban areas to industrial parks, relocating from No. 199 Jianxin Street in Shouguang to the Shouguang Houzhen Chemical Industrial Park on an equal scale. In November 2011, the former Weifang Environmental Protection Bureau approved the relocation project for Lianmeng Chemical, which involved constructing facilities for 400,000 tons per year of synthetic ammonia and 600,000 tons per year of urea, under approval document No. “Weihuan Shenzi 259”. The environmental impact assessment authorized the construction of 2 sets of plants capable of producing 200,000 tons per year of synthetic ammonia, 2 sets of plants capable of producing 100,000 tons per year of methanol, and 2 sets of plants capable of producing 300,000 tons per year of urea. The utility systems included 3 circulating fluidized bed boilers with a capacity of 130 t/h each (two in use and one as backup), water treatment facilities, and circulating water systems for various processes. The environmental protection measures entailed a sewage treatment plant, boiler flue gas treatment facilities, and 3 incinerators capable of burning mixed waste at a rate of 40 t/h each. The storage and transportation facilities included coal storage areas and tank farms. Gas is produced using an automatic continuous coal feeding and oxygen-enriched oxidation process, with a designed production capacity of 400,000 tons per year of ammonia, 200,000 tons per year of methanol, and 600,000 tons per year of urea. The equivalent-scale relocation project was completed and put into operation in December 2012. During actual operation, since the oxygen-enriched continuous gas production process had little effect on reducing the carbon residue in the gas generation furnace slag, Lianmeng Chemical adjusted its gas production process to use a fixed-bed batch gas production process, with an increase in the blowing air used for gas generation. To handle this portion of the purge gas, Union Chemical constructed a 40t/h waste mixed-fuel furnace. To further improve the efficiency of thermal resource utilization, Lianmeng Chemical integrates the reuse of waste heat and pressure, and has installed one 8MW and one 20MW backpressure turbine unit. One 40t/h waste-coal mixed-firing furnace, one 8MW unit, and one 20MW back-pressure unit were put into operation in January 2014; all of them were constructed without prior approval. As a result, Lianmeng Chemical carried out an environmental impact assessment of the current status of the waste heat and pressure utilization projects in order to complete the necessary environmental assessment procedures. On December 7, 2016, the relevant documentation was filed with the former Weifang Environmental Protection Bureau, under reference number Wei Huan Ping Han Zi No. 119. In September 2017, the former Shouguang Environmental Protection Bureau approved the \"Environmental Protection Acceptance Monitoring (Survey) Report for the Completion of the Project Involving the Relocation of a facility with an annual production capacity of 400,000 tons of synthetic ammonia and 600,000 tons of urea\", under approval document No. Shouhuan Yan 165. In 2018, the People’s Government of Shandong Province issued the \"Notice on the Implementation Plan to Accelerate the High-Quality Development of Seven High-Energy-Consuming Industries\" (Lu Zheng Zi No. 248). The goals for the transformation and upgrading of the fertilizer industry were as follows: by 2022, the production capacity of synthetic ammonia was to be reduced by 2 million tons, so that the total production capacity of synthetic ammonia in the province would remain around 6.5 million tons; the production capacity of urea was also to be kept at around 6.5 million tons. The elimination rate for fixed-bed gasifiers was set at over 90%, with all fixed-bed gasifiers used in urea production facilities to be phased out. The existing \"40·60 Equal-Volume Relocation Project\" at Lianmeng Chemical uses gasification technology for fixed-bed batch gas production; this process is relatively outdated, resulting in low coal utilization efficiency. In order to meet the requirements for high-quality development in the energy-intensive industries in Shandong Province, in line with the principles of clean and efficient utilization of coal as well as industrial upgrading and transformation in that province, and to improve corporate economic efficiency, enhance the market competitiveness of products, reduce pollution emissions, and increase resource utilization efficiency, the enterprise has decided to upgrade its existing production facilities.