Is there anyone who produces methanol from natural gas?

400,000 cubic meters per day, approximately 420 tons per day; assuming 7,000 operating hours per year, the annual methanol production capacity would be 125,000 tons, and the total investment would not exceed 1 billion RMB.

It’s too general – could you give a specific figure? The investment can’t be that large, right?

CNOOC Jiantao Hainan’s 600,000 tons per year natural gas-to-methanol plant produces 2,000 tons of pure methanol per day. Its process technology involves a sequence of steps including evaporation and conversion for natural gas purification, compression using centrifuges, medium-pressure synthesis, hydrogen recovery from off-gases, and distillation.

Our plant is a methanol production facility using natural gas, with an annual capacity of 300,000 tons; it employs steam conversion with pre-carbonation of natural gas, and the waste heat from this conversion process generates high-pressure steam at 10.2 MPa； The methanol synthesis process using the low-pressure method (8.0 MPa) and three-column distillation (with structured packing); all the main process equipment in this unit is of single-series design. Both the carbon dioxide compressor and the syngas compressor are of the centrifugal type, driven by steam turbines ； The methanol synthesis tower uses a horizontal synthesis tower from Swiss Casale ； The induced draft fan and the high-pressure boiler feed water pump are driven by steam turbines; a standby electric high-pressure boiler feed water pump is available, while all the other pumps in the installation are driven electrically. Based on our factory’s consumption standards, the scale of your design should be around 400 tons of pure alcohol per day, or about 120,000 tons per year; the facility would require more than 200 mu of land, with an investment of around 500 million yuan.

16.3 thousand cubic meters per hour is similar to the capacity of our existing units; with full load and steady operation over the long term, an output of 160,000 tons per year should be achievable. Our process involves iron-manganese desulfurization followed by zinc oxide desulfurization, with two stages of conversion (box-type conversion coupled with parallel heat exchange conversion), followed by a second stage of conversion. Reciprocating compressors are used for compression, two Ruwisch towers operate in parallel for synthesis, and two distillation towers are used for distillation. The off-gases are processed using PSA to recover hydrogen and carbon-rich gases. Carbon dioxide from fuel flue gases is recovered through absorption and regeneration using EMA solution. The steam produced can basically meet our own needs. In 2003, the technical upgrade was designed by Chengdu General Design, which became the current manufacturing process. (Yutianhua Unit 2): My suggestion is that desulfurization should be determined based on the sulfur content; if the sulfur content is high, an EMA absorption and regeneration system can be used first, while if the sulfur content is low, iron-manganese desulfurization followed by zinc oxide desulfurization can be employed ； Two-stage heat-exchange conversion series two-stage conversion for transformation ； Three-stage compressor driven by a compression steam turbine ； For synthesis, horizontal water-cooled reactors from Hangzhou Linda are used; they are slightly larger in size and can be designed to handle a capacity of 180,000–200,000 tons. Domestic catalysts are employed as catalysts ； Distillation is carried out using a three-column distillation system, with the heat source for the pressure column coming primarily from the system after conversion ； Hydrogen recovery can be achieved using membrane recovery or pressure swing adsorption ； There is no need to design a carbon dioxide recovery device anymore. This design is more compact, results in lower gas consumption and overall energy use. Compared to the process used in our factory, while the investment in conversion and distillation increases, all other aspects see reductions, leading to a significant drop in overall consumption. Fewer operators are required – around 10 people per shift are sufficient. The downside is that there are too many tail pipes, which makes frequent start-up and shutdown operations difficult. The design can be done by Chengda, Donghua, or Chengdu General; generally speaking, Chengdu General has produced quite a number of designs, though they tend to be rather rough. Mainly, the mechanical orders for equipment must be approved.

The process for producing methanol from natural gas is now quite mature. For a turnkey project, the investment cost is approximately as follows: an annual production capacity of 100,000 tons per year requires a total investment of 800 million RMB. The more promising process at present is the synthesis of methanol from carbon dioxide; it is estimated that by around 2012, this will become the dominant method in China.

Based on the assumption that 1,200 cubic meters of natural gas are consumed per ton of methanol produced, and considering an annual production volume of 120,000 tons of methanol (with carbon dioxide recovered from exhaust gases being reintroduced into the conversion system), the total investment cost should be around 600 million yuan. ] Currently, there are many companies engaged in the production of methanol from natural gas. Chongqing Ideal Technology has taken charge of the construction of projects with a capacity of 180,000 tons in the Sulihe area of Inner Mongolia Autonomous Region, as well as a project with a capacity of 150,000 tons in Chongqing Wanlailai; both projects are already in operation. The designed consumption level for these projects is well below 1,200 cubic meters. For more details, please contact QQ: 147685065

In terms of natural gas consumption, we can achieve around 865 cubic meters per ton, with a slight increase in winter. It can operate stably for about 700 days; for details, please visit Yutianhua for an inspection.

The cost of building a new plant is likely to be around 700–1 billion yuan. With available space, utility facilities, and boiler steam, the cost for just the methanol production unit and the air separation unit can probably be kept under 450 million yuan. (The conversion process is assumed to involve 176 conversion tubes; there is one compressor, and one synthesis tower is considered.)

9# liujianguo1116, does this person not know how to communicate properly? ? My QQ is 419191145; I’m very interested in Yutianhua. .