Address：No.118, fangshui road, chemical industrial park, liuhe district, nanjing city, jiangsu province
Methanol synthesis unit
Coal storage and transportation unit
The dual-line coal transportation mode is used for the unit, specifically, coals are mainly transported by train (vehicle transportation as the auxiliary mode), and are then transferred by belts to six silos, each of which has a designed storage capacity of 9,000 t, and they are conveyed to each user through belts.
Circulating water unit
It consists of 4 sets of cooling towers, all of which are the open type. The cooling water is pressurized by the circulating water pump and is then sent to the heat exchanger at each production device for heat exchange. After that, the circulating water is sent to the top of the cooling tower through the residual pressure; through the heat exchange between the water and the gas pumped by the fan at the top of the tower, the cooled water flows into the pool and is then pressurized and sent out by the circulating water pump for cyclic use.
Power generation unit
Steam is generated during the operation of the power generation device, in addition to the part consumed by the system, there is a relatively large amount of residual steam, with a relatively low grade (saturation). Through the analysis and demonstration, the last two 12MW steam-supplementing and condensing turbines are used to fully utilize the waste heat of the residual steam, as a result, about 10 KV power (1.2 KWH/set) is generated per hour and is supplied to the 10 KV power grid of the unit, thus greatly reducing the external electricity, condensing all the steam into water and recycling it, and also reducing the noise pollution to the environment.
Water-coal slurry gasification unit
The unit, for which the GE technology is adopted, was put into operation in April 2007 and September 2009, supplying materials to 7 gasification furnaces, 5 for operation and 2 for standby, and consuming tons of coal per year, and the gas produced is sent to the low-temperature methanol washing unit after the conversion; the ash water is washed and recycled by the slag water treatment system, and the coarse slag is transported out by the contractor for treatment.
The methanol-to-olefin (MTO process for short) technology, developed by UOP, is adopted, and the supporting MTO-100 catalyst (SAPO-34) is used; Wison Engineering (China) Co., Ltd. is responsible for the detailed design and contract. The methanol is used as raw material for the unit, with a design treatment capacity of 750,000 t/year. The unit is mainly composed of the feed and product separation, reaction and regeneration, catalyst recovery systems, product compression and product concentration plants. featuring large scale, less personnel required, advanced technology, high integration degree and localization degree.
The olefin separation technology, an advanced technology independently developed by Wison with independent intellectual property rights, is adopted, and the pre-cutting - oil absorption and separation technology, with simple process, less equipment investment and low energy consumption, is used to replace the conventional cryogenic demethanization system, and to produce 286,000 t/year of polymer-grade ethylene and polymer-grade propylene.
The olefin cracking process (OCP process) and selective hydrogenation process (SHP process), jointly developed by Total Petrochemicals and UOP Company, are adopted, and the supporting OCP cracking catalyst and SHP hydrogenation catalyst are used. Wison Engineering (China ) Co., Ltd. is responsible for the detailed design and contract construction of the project. The C4-C8 heavy olefin products from MTO and OPU units are used as raw materials for the unit, to produce light olefin products with ethylene and propylene as target components. The unit is mainly composed of the selective hydrogenation, olefin cracking, regeneration gas compression cycle, cracking gas compressor and regeneration gas compressor, and other sections, and it has various noticeable features, such as many units, large scale, few personnel required, advanced technology, high integration degree and localization degree.
The second-generation low-pressure oxo synthesis through propylene rhodium, the liquid-phase circulation process, jointly developed by DAVY/DOW, is adopted, with an annual output of 250,000 t butyl octanol. The main products are octanol, isobutyraldehyde and normal isobutanol, all of which are important chemical raw materials for the production of plastics and rubber plasticizers.
The company has a special tank field for chemical products, with an area totaling 35,000 m3 and containing the octanol, butanol, isobutyraldehyde, propylene, ethylene, etc.
Low-temperature methanol washing unit