The methanol-to-olefins project of the second phase of Zhongtian Hechuang has been approved

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The last edit to this post was made by liaifeng on 2018-9-10 at 20:27. The methanol-to-olefins project as part of the second phase of the Zhongtian Hechuang project has been approved. Author/Source: Date: 2017-03-07. Views: 30. Recently, it was reported by the Development and Reform Commission of Inner Mongolia Autonomous Region that the methanol-to-olefins project, which is part of the second phase of the coal deep-processing demonstration project carried out by Zhongtian Hechuang Energy Co., Ltd., has been officially approved. The project is located in the Tuk Industrial Park, Wushen Banner, Ordos City, with a total investment of 14.77 billion yuan; its production capacity is 1.33 million tons of polyolefins per year. The project was jointly developed by four shareholders (China National Coal Energy Group Co., Ltd. holds 38.75% of the shares, Sinopec Corporation holds 38.75% of the shares, Shanghai Shenneng Power Generation Co., Ltd. holds 12.5% of the shares, and Inner Mongolia Manshi Coal Group Co., Ltd. holds 10% of the shares). The project will be constructed in two phases. Phase 1 mainly involves the construction of two coal mines and a methanol plant with an annual capacity of 3.6 million tons ； Phase 2 mainly involves the construction of 2×1.8 million tons per year of methanol-to-olefins capacity, 670,000 tons per year of polyethylene production capacity, and 700,000 tons per year of polypropylene production capacity; it is currently the largest coal-to-olefins project in the world. On September 24, 2016, the 3.6 million tons per year methanol plant produced qualified methanol products ； On October 17, the 1.8 million tons per year methanol-to-olefins plant was successfully commissioned, producing qualified ethylene and propylene ； On October 26, the entire production process was operationalized, resulting in the production of qualified polyethylene and polypropylene. The construction scope includes: 2×1.8 million tons/year methanol-to-olefins units. These units use methanol as a raw material to produce polymeric-grade ethylene and propylene, as well as other by-products such as C4 and C5. It mainly consists of a methanol conversion section and a light olefins recovery section. The methanol conversion section includes units such as reaction-regeneration, energy recovery, waste heat boilers, feed gas vaporization and superheating, product gas quenching, product water stripping, and oxide recovery. The light olefins recovery section includes units such as product gas compression and alkaline washing, cold separation, thermal separation, and propylene refrigeration. The facility utilizes Sinopec’s own S-MTO technology. Products: Ethylene, propylene; LDPE (tubular process) plant with an annual production capacity of 250,000 tons. The plant utilizes EXXON MOBIL’s high-pressure tubular process technology, and its capacity is 250,000 tons per year. Compared with other processes, it features pulse discharging, multi-point feeding, multi-point initiator injection, a reactor with variable diameter, and discharge from an ethylene quenching reactor. This process features a high average conversion rate of around 40%, and the LDPE products produced using it have little gelation and excellent optical properties. The device can produce specialty materials in various grades, which are mainly used in applications such as highly transparent materials, heavy-duty packaging films, and cable materials. Product: Commonly known as low-density polyethylene (LDPE). A LDPE plant with an annual production capacity of 120,000 tons; this plant uses EXXON MOBILL’s high-pressure batch process technology, and its capacity is 120,000 tons per year. This process uses ethylene as the raw material and a mixture of organic peroxides as an initiator; under high temperature and pressure, synthetic resin is produced through the free-radical polymerization of ethylene. The low-density polyethylene products manufactured by this device have a low density, good flexibility, as well as excellent low-temperature resistance and chemical stability. These products are primarily suitable for thermoplastic processing applications such as coating, injection molding, extrusion, blow molding, and thermoforming. Product: Commonly known as low-density polyethylene (LDPE); 300,000 tons per year LLDPE plant. The plant utilizes the SGPE gas-phase polyethylene technology provided by Sinopec Technology & Development Corporation (referred to as SGPE technology). Using ethylene as the raw material and butene-1 or hexene-1 as comonomers, full-density polyethylene resin products with a density of 916–965 kg/m3 are produced, with an annual production capacity of 300,000 tons. This device can produce products of multiple grades according to market demands. Product: Linear low-density polyethylene (LLDPE). The PP ring-type reactor plant has an annual production capacity of 350,000 tons. It utilizes Sinopec’s ST-Ⅱ ring-type polymerization technology for producing polypropylene; this technology is advanced, features a high degree of localization, low investment costs, excellent product performance, and strong competitiveness. It also boasts mature and reliable operational experience, with an annual production capacity of 350,000 tons. This device can produce products of various grades, including homopolymers and random copolymers. Product: Polypropylene (PP) – 350,000 tons per year. The PP gas-phase plant utilizes Ineos’ Innovene gas-phase polypropylene process technology. This technology features a short process flow, low energy consumption, high safety levels, ease of start-up and shutdown as well as grade switching. It produces few by-products, offers a wide range of applications for the product, and enables the production of high-quality copolymer grades. This facility can produce multiple grades of products, including homopolymers, random copolymers, and impact-resistant copolymers, using just one production line, with a designed capacity of 350,000 tons per year. Product: Polypropylene (PP). The 10,000 tons/year MTBE/butene-1 plant uses mixed C4 produced by S-MTO units as raw material. First, selective hydrogenation is employed to remove the diene and alkyne components from the raw material; then, through a combination of etherification reaction and catalytic distillation, isobutylene in the C4 is reacted with methanol to produce MTBE, thereby removing the isobutylene component. Finally, butene-1 is isolated from the unreacted C4 components via precise distillation. The designed production capacity of the plant is 11,700 tons per year for MTBE and 31,200 tons per year for butene-1. Product: Methyl tert-butyl ether (MTBE); Olefin Catalytic Cracking (OCC) unit. This unit utilizes Sinopec’s olefin cracking technology (OCC) to catalytically crack the olefins present in the feedstock – which consists of residual C4 materials produced by MTBE/1-butenes units and C5 materials produced by S-MTO units – in the presence of fixed-bed molecular sieve catalysts, thereby increasing the yields of ethylene and propylene. Industrial-scale plants for this technology already exist; it is a mature and reliable technology, and the relevant equipment from MTO’s light olefin recovery processes can be utilized to achieve deep integration with MTO plants. Products: N-Butane, Heavy Olefins. The first Thermoplastic Elastomer Technology and Market Seminar, organized by Yaxia Consulting, will be held in Beijing on March 31, 2017. The meeting will discuss the international and domestic market demand for TPE, as well as the drivers and potential for growth in the TPE market ； Selection of product areas and technical approaches for TPE investment ； Competition and substitution among different TPE products ； Progress and Trends in Downstream Applications of TPE ； Advances in bio-based TPE technology, etc.