Signing of the general contract for the procurement and construction of 60 million yuan worth of concentrated brine crystallization works for the Yili Xintian coal-to-natural gas project

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Contract for the procurement of concentrated brine crystals and the general construction work for Yili Xintian Coal-to-Natural Gas Project signed, worth 60 million yuan; Author/Source: Date: 2017-08-09; Clicks: 33. Recently, Zhejiang Tiandi Environmental Protection Engineering Co., Ltd. officially signed a contract for the procurement of concentrated brine crystals and the overall construction work for Yili Xintian Coal Chemical Co., Ltd.’s coal-to-natural gas project with an annual production capacity of 2 billion cubic meters. This project is the first wastewater treatment project in the coal chemical industry in which the company has participated in its construction. It is capable of treating 105 cubic meters of wastewater per hour, with a contract value exceeding 60 million yuan. This project has been designated by the **Ministry of Environmental Protection as a model environmental protection project for the treatment of high-salt wastewater and the comprehensive utilization of crystalline salts. Its technical approach is pioneering on a national scale and represents a milestone. Tiandi Company will not only take on the procurement and general construction management tasks for this project, but will also be involved throughout the process in designing optimized technical approaches for it. This project requires, based on the existing facilities, to carry out concentration, salt separation, and crystallization processes on both the reverse osmosis concentrate stream resulting from nanofiltration and the nanofiltration concentrate itself, thereby achieving zero wastewater discharge while simultaneously recovering and reusing salt resources. Project Overview: The project utilizes the Lurgi fixed-bed coal gasification under pressure technology, and adopts gas purification technology from German company Linde; its processing capacity is the largest in the world ； Adopting the methanation technology from the British company David – the world’s best technology for synthesizing high-purity methane at high temperatures ； It adopts the ammonia-based desulfurization environmental protection technology, a process that is unique in China, and is a **\"12th Five-Year Plan\" demonstration project for deep coal processing. Once completed and brought into operation, it will be able to produce 2 billion cubic meters of natural gas per year, which will be transported to the coastal interior via the \"West-to-East Gas Transmission\" pipeline; in addition, it will also generate by-products such as tar, middle oil, naphtha, thiamine, and crude phenol. In June 2013, a strategic partner from Zhejiang Energy was brought on board; the two parties jointly invested in building a coal-to-natural gas project. In May 2017, this coal-to-natural gas project was approved by the **National Development and Reform Commission. In March 2017, Project A of the coal-to-natural gas facility began trial operation, setting a record for the shortest time required, stable operation, and successful completion on the first attempt ； In coordination with this, the Yili No. 4 mine, designed with an annual production capacity of 6 million tons, began trial operations simultaneously, and the first mining face underwent a successful joint trial run. By May, the fourth coal mine in Ili had produced over one million tons of coal in total, while Xintian Coal Chemicals achieved an average daily output of 1.6 to 1.8 million cubic meters of coal, with a cumulative gas production of 100 million cubic meters. On June 16, 2017, the trial production ceremony for the coal-to-natural gas project in Ili, Xinjiang, with an annual production capacity of 2 billion cubic meters, was held at Xintian Coal Chemical Industry. This marked the entry of this coal-to-natural gas project into the trial production phase, after nearly 8 years of intensive construction.