Three World Records for Datang Toronto Coal Chemical Industry
Thread Content
Datang Dolun Coal Chemical Plant produces methanol – Author/Source: Date: 2011-06-27, Clicks: 33. On June 21, the methanol production unit at Inner Mongolia Datang International Dolun Coal Chemical Company began to produce methanol, marking the completion of the entire process flow from gasification to methanol production in this plant. On June 20, the No. 2 gasifier at the coal gasification plant was successfully ignited as scheduled. At 17:13 on that day, the coal gasification unit began to supply syngas to the purification plant; this marked the first time that the world’s largest gasifier has delivered syngas on a continuous basis. At 15:58 on June 21, the methanol synthesis unit was brought online safely to produce methanol product; laboratory analysis showed that the alcohol content reached 93%. It is understood that the gasification unit of Dolun Coal Chemical Company to the methanol unit spans four major processes: gasification, shift reaction, low-temperature methanol washing, and methanol compression synthesis, and includes three world records. The world’s largest Shell brown coal gasification unit, featuring six burners and being the first of its kind in the world capable of processing 2,870 tons of dry raw coal per day, generates 157,000 standard cubic meters of syngas per hour. It is the world’s largest low-temperature methanol washing unit for single-series gas processing, capable of handling 470,000 standard cubic meters of syngas per hour. It is the world’s largest methanol synthesis plant with a single train, capable of producing 5,000 tons of methanol per day. It’s really huge, ah! !
Hehe, the driving time might also set a world record
The construction period is also the longest in the world, and the twists and turns it has gone through are unheard of! The key is to figure out how to ensure stable and high production levels in the next steps. It is hoped that Datang Dolun Coal Chemical Industry will reach full production capacity as soon as possible, with its facilities passing the performance assessments.
Could you please explain the process configuration of Datang Dalun? Where is the methanol synthesis carried out there? It is said that its production capacity is now 7,600 MTPD. Kassita in Iran is said to have a capacity of 6,700 MTPD, while those in Trinidad and Tobago have a capacity of 7,600 MTPD. All of these are said to be single-unit facilities, but which one is accurate? Datang’s figure is definitely true
I also want to know which company’s technology is used in the methanol synthesis plant How many sets of equipment are there in total, and how much methanol is produced per series?
1. The coal drying unit utilizes technology independently developed by Datang International, which is the first of its kind in China. It provides indirect heating through a shell-and-tube heat exchanger, reducing the moisture content of the raw coal from 34% to 6%； Nissan has dried lignite in quantities of nearly 10,000 tons. 2. The gasification unit utilizes Shell’s Dutch pressurized coal gasification technology; it features three series and six symmetrically adjustable burners, as well as liquid slag discharge. Each unit is capable of processing 2,800 tons of dried lignite per day, producing 157,000 Nm3/h of effective syngas. It has the world’s highest processing capacity in Shell’s coal gasification technology. 3. The CO conversion unit utilizes the mature technology of Wuhuan Technology Co., Ltd. available in China; it comes in three series and converts excess CO into the hydrocarbon ratio required for methanol synthesis through certain conversion reactions. 4. Low-temperature methanol washing: This process utilizes German Lurgi technology; by taking advantage of the high solubility of H2S and COS in methanol at low temperatures, it achieves sulfur and carbon removal, with sulfur being produced as a by-product. The processing capacity per series is the largest in the world. 5. The super-large methanol plant utilizes Germany’s Lurgi low-pressure methanol synthesis technology; it employs one gas-cooled reactor along with two water-cooled reactors to produce methanol, with waste heat being recovered. The plant has a daily methanol production capacity of 5,000 tons, ranking first in the world in terms of output. 6. The MTP unit utilizes German Lurgi technology, representing the world’s first industrial application of coal-based olefins. Dimethyl ether is produced through the methanol dehydration reaction, and further dehydration yields products mainly consisting of low-molecular-weight olefins, with crude gasoline and LPG as by-products. 7. The polypropylene plant utilizes the gas-phase fluidized bed synthesis technology for polypropylene developed by Dow Chemical in the United States; the process package is provided by Dow Chemical, while the basic engineering design is carried out by Toyoe Engineering Corporation of Japan. First application in the country; two series, with an annual production capacity of 460,000 tons of polypropylene. 8. The air separation unit utilizes domestic technology and is supplied as a complete set by Hangyang Oxygen Co., Ltd.; it consists of three units, each with an oxygen production capacity of 58,000 Nm3/h. It primarily supplies oxygen to the coal gasification unit, while the nitrogen produced as a by-product is used by the coal gasification unit, the methanol production unit, the purification units, the MTP unit, and the PP unit, among others.
Only air separation and conversion are domestic technologies; it seems they are only there to make money for foreign countries. Let’s wait and see the benefits after 10 years of operation
The more critical technologies are all imported; I truly hope that all technologies can be made domestically!
Question: Is methanol distillation also a Luzzi technology? How many columns are used in the process?